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mDNSResponder: Update to v878.200.35

Browse Source 
The sources can be obtained via:

https://opensource.apple.com/tarballs/mDNSResponder/mDNSResponder-878.200.35.tar.gz

Update #4010.
This commit is contained in:
Sebastian Huber 2020-06-18 13:07:18 +02:00
parent 0a1f82a346
commit c6d65faa42
42 changed files with 6786 additions and 1008 deletions
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101
mDNSResponder/Clients/dns-sd.c
View File

@ -174,10 +174,6 @@ static const char kFilePathSep = '/';
#include "../mDNSShared/dnssd_clientstub.c" #include "../mDNSShared/dnssd_clientstub.c"
#endif #endif
#if _DNS_SD_LIBDISPATCH
#include <dispatch/private.h>
#endif
//************************************************************************************************************* //*************************************************************************************************************
// Globals // Globals
@ -416,46 +412,36 @@ static unsigned int keytag(unsigned char *key, unsigned int keysize)
return ac & 0xFFFF; return ac & 0xFFFF;
} }
static void base64Encode(char *buffer, int buflen, void *rdata, unsigned int rdlen) // Base 64 encoding according to <https://tools.ietf.org/html/rfc4648#section-4>.
#define kBase64EncodingTable "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
static void base64Encode(char *buffer, size_t buflen, void *rdata, size_t rdlen)
{ {
#if _DNS_SD_LIBDISPATCH const uint8_t *src = (const uint8_t *)rdata;
const void *result = NULL; const uint8_t *const end = &src[rdlen];
size_t size; char *dst = buffer;
dispatch_data_t src_data = NULL, dest_data = NULL, null_str = NULL, data = NULL, map = NULL; const char *lim;
src_data = dispatch_data_create(rdata, rdlen, dispatch_get_global_queue(0, 0), ^{}); if (buflen == 0) return;
if (!src_data) lim = &buffer[buflen - 1];
goto done; while ((src < end) && (dst < lim))
{
uint32_t i;
const size_t rem = (size_t)(end - src);
dest_data = dispatch_data_create_with_transform(src_data, DISPATCH_DATA_FORMAT_TYPE_NONE, DISPATCH_DATA_FORMAT_TYPE_BASE64); // Form a 24-bit input group. If less than 24 bits remain, pad with zero bits.
if (!dest_data) if ( rem >= 3) i = (src[0] << 16) | (src[1] << 8) | src[2]; // 24 bits are equal to 4 6-bit groups.
goto done; else if (rem == 2) i = (src[0] << 16) | (src[1] << 8); // 16 bits are treated as 3 6-bit groups + 1 pad
else i = src[0] << 16; // 8 bits are treated as 2 6-bit groups + 2 pads
null_str = dispatch_data_create("", 1, dispatch_get_global_queue(0, 0), ^{}); // Encode each 6-bit group.
if (!null_str) *dst++ = kBase64EncodingTable[(i >> 18) & 0x3F];
goto done; if (dst < lim) *dst++ = kBase64EncodingTable[(i >> 12) & 0x3F];
if (dst < lim) *dst++ = (rem >= 2) ? kBase64EncodingTable[(i >> 6) & 0x3F] : '=';
data = dispatch_data_create_concat(dest_data, null_str); if (dst < lim) *dst++ = (rem >= 3) ? kBase64EncodingTable[ i & 0x3F] : '=';
if (!data) src += (rem > 3) ? 3 : rem;
goto done; }
*dst = '\0';
map = dispatch_data_create_map(data, &result, &size);
if (!map)
goto done;
snprintf(buffer, buflen, " %s", (char *)result);
done:
if (src_data) dispatch_release(src_data);
if (dest_data) dispatch_release(dest_data);
if (data) dispatch_release(data);
if (null_str) dispatch_release(null_str);
if (map) dispatch_release(map);
return;
#else //_DNS_SD_LIBDISPATCH
snprintf(buffer, buflen, " %s", ".");
return;
#endif //_DNS_SD_LIBDISPATCH
} }
static DNSServiceProtocol GetProtocol(const char *s) static DNSServiceProtocol GetProtocol(const char *s)
@ -924,9 +910,9 @@ static int snprintd(char *p, int max, const unsigned char **rd)
return(p-buf); return(p-buf);
} }
static void ParseDNSSECRecords(uint16_t rrtype, char *rdb, char *p, unsigned const char *rd, uint16_t rdlen) static void ParseDNSSECRecords(uint16_t rrtype, char *rdb, size_t rdb_size, unsigned const char *rd, uint16_t rdlen)
{ {
int rdb_size = 1000; char *p = rdb;
switch (rrtype) switch (rrtype)
{ {
case kDNSServiceType_DS: case kDNSServiceType_DS:
@ -945,7 +931,7 @@ static void ParseDNSSECRecords(uint16_t rrtype, char *rdb, char *p, unsigned con
case kDNSServiceType_DNSKEY: case kDNSServiceType_DNSKEY:
{ {
rdataDNSKey *rrkey = (rdataDNSKey *)rd; rdataDNSKey *rrkey = (rdataDNSKey *)rd;
p += snprintf(p, rdb + rdb_size - p, "%d %d %d %u", swap16(rrkey->flags), rrkey->proto, p += snprintf(p, rdb + rdb_size - p, "%d %d %d %u ", swap16(rrkey->flags), rrkey->proto,
rrkey->alg, (unsigned int)keytag((unsigned char *)rrkey, rdlen)); rrkey->alg, (unsigned int)keytag((unsigned char *)rrkey, rdlen));
base64Encode(p, rdb + rdb_size - p, (unsigned char *)(rd + DNSKEY_FIXED_SIZE), rdlen - DNSKEY_FIXED_SIZE); base64Encode(p, rdb + rdb_size - p, (unsigned char *)(rd + DNSKEY_FIXED_SIZE), rdlen - DNSKEY_FIXED_SIZE);
break; break;
@ -1027,6 +1013,11 @@ static void ParseDNSSECRecords(uint16_t rrtype, char *rdb, char *p, unsigned con
p += snprintd(p, rdb + rdb_size - p, &q); p += snprintd(p, rdb + rdb_size - p, &q);
len = p - k + 1; len = p - k + 1;
if ((&rdb[rdb_size] - p) >= 2)
{
*p++ = ' ';
*p = '\0';
}
base64Encode(p, rdb + rdb_size - p, (unsigned char *)(rd + len + RRSIG_FIXED_SIZE), rdlen - (len + RRSIG_FIXED_SIZE)); base64Encode(p, rdb + rdb_size - p, (unsigned char *)(rd + len + RRSIG_FIXED_SIZE), rdlen - (len + RRSIG_FIXED_SIZE));
break; break;
} }
@ -1058,7 +1049,7 @@ static void DNSSD_API qr_reply(DNSServiceRef sdref, const DNSServiceFlags flags,
if (operation == 'D') if (operation == 'D')
printf("Timestamp A/R if %-30s%-6s%-7s%-18s Rdata\n", "Name", "Type", "Class", "DNSSECStatus"); printf("Timestamp A/R if %-30s%-6s%-7s%-18s Rdata\n", "Name", "Type", "Class", "DNSSECStatus");
else else
printf("Timestamp A/R Flags if %-30s%-6s%-7s Rdata\n", "Name", "Type", "Class"); printf("Timestamp A/R Flags if %-30s%-6s%-7s Rdata\n", "Name", "Type", "Class");
} }
printtimestamp(); printtimestamp();
@ -1115,7 +1106,7 @@ static void DNSSD_API qr_reply(DNSServiceRef sdref, const DNSServiceFlags flags,
case kDNSServiceType_DNSKEY: case kDNSServiceType_DNSKEY:
case kDNSServiceType_NSEC: case kDNSServiceType_NSEC:
case kDNSServiceType_RRSIG: case kDNSServiceType_RRSIG:
ParseDNSSECRecords(rrtype, rdb, p, rd, rdlen); ParseDNSSECRecords(rrtype, rdb, sizeof(rdb), rd, rdlen);
break; break;
default: default:
@ -1143,7 +1134,7 @@ static void DNSSD_API qr_reply(DNSServiceRef sdref, const DNSServiceFlags flags,
if (operation == 'D') if (operation == 'D')
printf("%s%3d %-30s%-6s%-7s%-18s %s", op, ifIndex, fullname, rr_type, rr_class, dnssec_status, rdb); printf("%s%3d %-30s%-6s%-7s%-18s %s", op, ifIndex, fullname, rr_type, rr_class, dnssec_status, rdb);
else else
printf("%s%6X%3d %-30s%-7s%-6s %s", op, flags, ifIndex, fullname, rr_type, rr_class, rdb); printf("%s%9X%3d %-30s%-7s%-6s %s", op, flags, ifIndex, fullname, rr_type, rr_class, rdb);
if (unknowntype) if (unknowntype)
{ {
while (rd < end) while (rd < end)
@ -1208,7 +1199,7 @@ static void DNSSD_API addrinfo_reply(DNSServiceRef sdref, const DNSServiceFlags
if (operation == 'g') if (operation == 'g')
printf("Timestamp A/R if %-25s %-44s %-18s\n", "Hostname", "Address", "DNSSECStatus"); printf("Timestamp A/R if %-25s %-44s %-18s\n", "Hostname", "Address", "DNSSECStatus");
else else
printf("Timestamp A/R Flags if %-38s %-44s %s\n", "Hostname", "Address", "TTL"); printf("Timestamp A/R Flags if %-38s %-44s %s\n", "Hostname", "Address", "TTL");
} }
printtimestamp(); printtimestamp();
@ -1248,7 +1239,7 @@ static void DNSSD_API addrinfo_reply(DNSServiceRef sdref, const DNSServiceFlags
if (operation == 'g') if (operation == 'g')
printf("%s%3d %-25s %-44s %-18s", op, interfaceIndex, hostname, addr, dnssec_status); printf("%s%3d %-25s %-44s %-18s", op, interfaceIndex, hostname, addr, dnssec_status);
else else
printf("%s%6X%3d %-38s %-44s %d", op, flags, interfaceIndex, hostname, addr, ttl); printf("%s%9X%3d %-38s %-44s %d", op, flags, interfaceIndex, hostname, addr, ttl);
if (errorCode) if (errorCode)
{ {
if (errorCode == kDNSServiceErr_NoSuchRecord) if (errorCode == kDNSServiceErr_NoSuchRecord)
@ -1513,12 +1504,6 @@ static int API_string_limit_test()
return 0; return 0;
} }
// local prototypes for routines that don't have prototypes in dns_sd.h
#if APPLE_OSX_mDNSResponder
DNSServiceErrorType DNSSD_API DNSServiceSetDefaultDomainForUser(DNSServiceFlags flags, const char *domain);
DNSServiceErrorType DNSSD_API DNSServiceCreateDelegateConnection(DNSServiceRef *sdRef, int32_t pid, uuid_t uuid);
#endif
static int API_NULL_input_test() static int API_NULL_input_test()
{ {
printf("Running basic API input range tests with various pointer parameters set to NULL:\n"); printf("Running basic API input range tests with various pointer parameters set to NULL:\n");
@ -1916,6 +1901,14 @@ int main(int argc, char **argv)
opinterface = kDNSServiceInterfaceIndexBLE; opinterface = kDNSServiceInterfaceIndexBLE;
} }
if (argc > 1 && !strcasecmp(argv[1], "-allowexpired"))
{
argc--;
argv++;
flags |= kDNSServiceFlagsAllowExpiredAnswers;
printf("Setting kDNSServiceFlagsAllowExpiredAnswers\n");
}
if (argc > 1 && !strcasecmp(argv[1], "-includep2p")) if (argc > 1 && !strcasecmp(argv[1], "-includep2p"))
{ {
argc--; argc--;

5567
mDNSResponder/Clients/dnssdutil.c
View File

File diff suppressed because it is too large Load Diff

6
mDNSResponder/Makefile
View File

@ -11,12 +11,13 @@
# install: # install:
# installsrc: # installsrc:
# installhdrs: # installhdrs:
# installapi:
# clean: # clean:
# #
include $(MAKEFILEPATH)/pb_makefiles/platform.make include $(MAKEFILEPATH)/pb_makefiles/platform.make
MVERS = "mDNSResponder-878.70.2" MVERS = "mDNSResponder-878.200.35"
VER = VER =
ifneq ($(strip $(GCC_VERSION)),) ifneq ($(strip $(GCC_VERSION)),)
@ -44,6 +45,9 @@ installhdrs::
cd "$(SRCROOT)/mDNSMacOSX"; xcodebuild installhdrs OBJROOT=$(OBJROOT) SYMROOT=$(SYMROOT) DSTROOT=$(DSTROOT) MVERS=$(MVERS) SDKROOT=$(SDKROOT) -target SystemLibraries $(VER) cd "$(SRCROOT)/mDNSMacOSX"; xcodebuild installhdrs OBJROOT=$(OBJROOT) SYMROOT=$(SYMROOT) DSTROOT=$(DSTROOT) MVERS=$(MVERS) SDKROOT=$(SDKROOT) -target SystemLibraries $(VER)
cd "$(SRCROOT)/mDNSMacOSX"; xcodebuild installhdrs OBJROOT=$(OBJROOT) SYMROOT=$(SYMROOT) DSTROOT=$(DSTROOT) MVERS=$(MVERS) SDKROOT=$(SDKROOT) -target dns_services $(VER) cd "$(SRCROOT)/mDNSMacOSX"; xcodebuild installhdrs OBJROOT=$(OBJROOT) SYMROOT=$(SYMROOT) DSTROOT=$(DSTROOT) MVERS=$(MVERS) SDKROOT=$(SDKROOT) -target dns_services $(VER)
installapi:
cd "$(SRCROOT)/mDNSMacOSX"; xcodebuild installapi OBJROOT=$(OBJROOT) SYMROOT=$(SYMROOT) DSTROOT=$(DSTROOT) MVERS=$(MVERS) SDKROOT=$(SDKROOT) -target SystemLibrariesDynamic $(VER)
java: java:
cd "$(SRCROOT)/mDNSMacOSX"; xcodebuild install OBJROOT=$(OBJROOT) SYMROOT=$(SYMROOT) DSTROOT=$(DSTROOT) MVERS=$(MVERS) SDKROOT=$(SDKROOT) -target libjdns_sd.jnilib $(VER) cd "$(SRCROOT)/mDNSMacOSX"; xcodebuild install OBJROOT=$(OBJROOT) SYMROOT=$(SYMROOT) DSTROOT=$(DSTROOT) MVERS=$(MVERS) SDKROOT=$(SDKROOT) -target libjdns_sd.jnilib $(VER)

355
mDNSResponder/mDNSCore/DNSCommon.c
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2002-2015 Apple Inc. All rights reserved. * Copyright (c) 2002-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -3450,7 +3450,6 @@ mDNSexport const mDNSu8 *GetLargeResourceRecord(mDNS *const m, const DNSMessage
rr->TimeRcvd = m ? m->timenow : 0; rr->TimeRcvd = m ? m->timenow : 0;
rr->DelayDelivery = 0; rr->DelayDelivery = 0;
rr->NextRequiredQuery = m ? m->timenow : 0; // Will be updated to the real value when we call SetNextCacheCheckTimeForRecord() rr->NextRequiredQuery = m ? m->timenow : 0; // Will be updated to the real value when we call SetNextCacheCheckTimeForRecord()
rr->LastUsed = m ? m->timenow : 0;
rr->CRActiveQuestion = mDNSNULL; rr->CRActiveQuestion = mDNSNULL;
rr->UnansweredQueries = 0; rr->UnansweredQueries = 0;
rr->LastUnansweredTime= 0; rr->LastUnansweredTime= 0;
@ -3630,25 +3629,6 @@ mDNSexport mDNSBool GetPktLease(mDNS *const m, const DNSMessage *const msg, cons
return mDNSfalse; return mDNSfalse;
} }
mDNSlocal const mDNSu8 *DumpRecords(mDNS *const m, const DNSMessage *const msg, const mDNSu8 *ptr, const mDNSu8 *const end, int count, char *label)
{
int i;
LogInfo("%2d %s", count, label);
for (i = 0; i < count && ptr; i++)
{
// This puts a LargeCacheRecord on the stack instead of using the shared m->rec storage,
// but since it's only used for debugging (and probably only on OS X, not on
// embedded systems) putting a 9kB object on the stack isn't a big problem.
LargeCacheRecord largecr;
ptr = GetLargeResourceRecord(m, msg, ptr, end, mDNSInterface_Any, kDNSRecordTypePacketAns, &largecr);
if (ptr)
LogInfo("%2d TTL%8d %s", i, largecr.r.resrec.rroriginalttl, CRDisplayString(m, &largecr.r));
}
if (!ptr)
LogInfo("DumpRecords: ERROR: Premature end of packet data");
return(ptr);
}
#define DNS_OP_Name(X) ( \ #define DNS_OP_Name(X) ( \
(X) == kDNSFlag0_OP_StdQuery ? "" : \ (X) == kDNSFlag0_OP_StdQuery ? "" : \
(X) == kDNSFlag0_OP_Iquery ? "Iquery " : \ (X) == kDNSFlag0_OP_Iquery ? "Iquery " : \
@ -3672,52 +3652,198 @@ mDNSlocal const mDNSu8 *DumpRecords(mDNS *const m, const DNSMessage *const msg,
(X) == kDNSFlag1_RC_NotAuth ? "NotAuth" : \ (X) == kDNSFlag1_RC_NotAuth ? "NotAuth" : \
(X) == kDNSFlag1_RC_NotZone ? "NotZone" : "??" ) (X) == kDNSFlag1_RC_NotZone ? "NotZone" : "??" )
// Note: DumpPacket expects the packet header fields in host byte order, not network byte order mDNSlocal void mDNS_snprintf_add(char **ptr, const char *lim, const char *fmt, ...)
mDNSexport void DumpPacket(mDNS *const m, mStatus status, mDNSBool sent, char *transport,
const mDNSAddr *srcaddr, mDNSIPPort srcport,
const mDNSAddr *dstaddr, mDNSIPPort dstport, const DNSMessage *const msg, const mDNSu8 *const end)
{ {
mDNSBool IsUpdate = ((msg->h.flags.b[0] & kDNSFlag0_OP_Mask) == kDNSFlag0_OP_Update); va_list args;
const mDNSu8 *ptr = msg->data; mDNSu32 buflen, n;
int i; char *const dst = *ptr;
DNSQuestion q;
char tbuffer[64], sbuffer[64], dbuffer[64] = "";
if (!status) tbuffer[mDNS_snprintf(tbuffer, sizeof(tbuffer), sent ? "Sent" : "Received" )] = 0;
else tbuffer[mDNS_snprintf(tbuffer, sizeof(tbuffer), "ERROR %d %sing", status, sent ? "Send" : "Receive")] = 0;
if (sent) sbuffer[mDNS_snprintf(sbuffer, sizeof(sbuffer), "port " )] = 0;
else sbuffer[mDNS_snprintf(sbuffer, sizeof(sbuffer), "%#a:", srcaddr)] = 0;
if (dstaddr || !mDNSIPPortIsZero(dstport))
dbuffer[mDNS_snprintf(dbuffer, sizeof(dbuffer), " to %#a:%d", dstaddr, mDNSVal16(dstport))] = 0;
LogInfo("-- %s %s DNS %s%s (flags %02X%02X) RCODE: %s (%d) %s%s%s%s%s%sID: %d %d bytes from %s%d%s%s --", buflen = (mDNSu32)(lim - dst);
tbuffer, transport, if (buflen > 0)
{
va_start(args, fmt);
n = mDNS_vsnprintf(dst, buflen, fmt, args);
va_end(args);
*ptr = dst + n;
}
}
#define DNSTypeString(X) (((X) == kDNSType_A) ? "A" : DNSTypeName(X))
#define ReadField16(PTR) ((mDNSu16)((((mDNSu16)((mDNSu8 *)(PTR))[0]) << 8) | ((mDNSu16)((mDNSu8 *)(PTR))[1])))
#define ReadField32(PTR) \
((mDNSu32)( \
(((mDNSu32)((mDNSu8 *)(PTR))[0]) << 24) | \
(((mDNSu32)((mDNSu8 *)(PTR))[1]) << 16) | \
(((mDNSu32)((mDNSu8 *)(PTR))[2]) << 8) | \
((mDNSu32)((mDNSu8 *)(PTR))[3])))
mDNSlocal void DNSMessageDump(const DNSMessage *const msg, const mDNSu8 *const end, char *buffer, mDNSu32 buflen)
{
domainname *name;
const mDNSu8 *ptr;
domainname nameStorage[2];
char *dst = buffer;
const char *const lim = &buffer[buflen];
mDNSu32 i;
const mDNSu32 rrcount = msg->h.numAnswers + msg->h.numAuthorities + msg->h.numAdditionals;
mDNS_snprintf_add(&dst, lim, "DNS %s%s (%lu) (flags %02X%02X) RCODE: %s (%d)%s%s%s%s%s%s ID: %u:",
DNS_OP_Name(msg->h.flags.b[0] & kDNSFlag0_OP_Mask), DNS_OP_Name(msg->h.flags.b[0] & kDNSFlag0_OP_Mask),
msg->h.flags.b[0] & kDNSFlag0_QR_Response ? "Response" : "Query", (msg->h.flags.b[0] & kDNSFlag0_QR_Response) ? "Response" : "Query",
(unsigned long)(end - (const mDNSu8 *)msg),
msg->h.flags.b[0], msg->h.flags.b[1], msg->h.flags.b[0], msg->h.flags.b[1],
DNS_RC_Name(msg->h.flags.b[1] & kDNSFlag1_RC_Mask), DNS_RC_Name(msg->h.flags.b[1] & kDNSFlag1_RC_Mask),
msg->h.flags.b[1] & kDNSFlag1_RC_Mask, msg->h.flags.b[1] & kDNSFlag1_RC_Mask,
msg->h.flags.b[0] & kDNSFlag0_AA ? "AA " : "", (msg->h.flags.b[0] & kDNSFlag0_AA) ? " AA" : "",
msg->h.flags.b[0] & kDNSFlag0_TC ? "TC " : "", (msg->h.flags.b[0] & kDNSFlag0_TC) ? " TC" : "",
msg->h.flags.b[0] & kDNSFlag0_RD ? "RD " : "", (msg->h.flags.b[0] & kDNSFlag0_RD) ? " RD" : "",
msg->h.flags.b[1] & kDNSFlag1_RA ? "RA " : "", (msg->h.flags.b[1] & kDNSFlag1_RA) ? " RA" : "",
msg->h.flags.b[1] & kDNSFlag1_AD ? "AD " : "", (msg->h.flags.b[1] & kDNSFlag1_AD) ? " AD" : "",
msg->h.flags.b[1] & kDNSFlag1_CD ? "CD " : "", (msg->h.flags.b[1] & kDNSFlag1_CD) ? " CD" : "",
mDNSVal16(msg->h.id), mDNSVal16(msg->h.id));
end - msg->data,
sbuffer, mDNSVal16(srcport), dbuffer,
(msg->h.flags.b[0] & kDNSFlag0_TC) ? " (truncated)" : ""
);
LogInfo("%2d %s", msg->h.numQuestions, IsUpdate ? "Zone" : "Questions"); name = mDNSNULL;
for (i = 0; i < msg->h.numQuestions && ptr; i++) ptr = msg->data;
for (i = 0; i < msg->h.numQuestions; i++)
{ {
ptr = getQuestion(msg, ptr, end, mDNSInterface_Any, &q); mDNSu16 qtype, qclass;
if (ptr) LogInfo("%2d %##s %s", i, q.qname.c, DNSTypeName(q.qtype));
name = &nameStorage[0];
ptr = getDomainName(msg, ptr, end, name);
if (!ptr) goto exit;
if ((end - ptr) < 4) goto exit;
qtype = ReadField16(&ptr[0]);
qclass = ReadField16(&ptr[2]);
ptr += 4;
mDNS_snprintf_add(&dst, lim, " %##s %s", name->c, DNSTypeString(qtype));
if (qclass != kDNSClass_IN) mDNS_snprintf_add(&dst, lim, "/%u", qclass);
mDNS_snprintf_add(&dst, lim, "?");
} }
ptr = DumpRecords(m, msg, ptr, end, msg->h.numAnswers, IsUpdate ? "Prerequisites" : "Answers");
ptr = DumpRecords(m, msg, ptr, end, msg->h.numAuthorities, IsUpdate ? "Updates" : "Authorities"); mDNS_snprintf_add(&dst, lim, " %u/%u/%u", msg->h.numAnswers, msg->h.numAuthorities, msg->h.numAdditionals);
DumpRecords(m, msg, ptr, end, msg->h.numAdditionals, "Additionals"); for (i = 0; i < rrcount; i++)
LogInfo("--------------"); {
mDNSu16 rrtype, rrclass, rdlength;
mDNSu32 ttl;
int handled;
const mDNSu8 *rdata;
const domainname *const previousName = name;
name = &nameStorage[(name == &nameStorage[0]) ? 1 : 0];
ptr = getDomainName(msg, ptr, end, name);
if (!ptr) goto exit;
if ((end - ptr) < 10) goto exit;
rrtype = ReadField16(&ptr[0]);
rrclass = ReadField16(&ptr[2]);
ttl = ReadField32(&ptr[4]);
rdlength = ReadField16(&ptr[8]);
ptr += 10;
if ((end - ptr) < rdlength) goto exit;
rdata = ptr;
if (i > 0) mDNS_snprintf_add(&dst, lim, ",");
if (!previousName || !SameDomainName(name, previousName)) mDNS_snprintf_add(&dst, lim, " %##s", name);
mDNS_snprintf_add(&dst, lim, " %s", DNSTypeString(rrtype));
if (rrclass != kDNSClass_IN) mDNS_snprintf_add(&dst, lim, "/%u", rrclass);
mDNS_snprintf_add(&dst, lim, " ");
handled = mDNSfalse;
switch (rrtype)
{
case kDNSType_A:
if (rdlength == 4)
{
mDNS_snprintf_add(&dst, lim, "%.4a", rdata);
handled = mDNStrue;
}
break;
case kDNSType_AAAA:
if (rdlength == 16)
{
mDNS_snprintf_add(&dst, lim, "%.16a", rdata);
handled = mDNStrue;
}
break;
case kDNSType_CNAME:
ptr = getDomainName(msg, rdata, end, name);
if (!ptr) goto exit;
mDNS_snprintf_add(&dst, lim, "%##s", name);
handled = mDNStrue;
break;
case kDNSType_SOA:
{
mDNSu32 serial, refresh, retry, expire, minimum;
domainname *const mname = &nameStorage[0];
domainname *const rname = &nameStorage[1];
name = mDNSNULL;
ptr = getDomainName(msg, rdata, end, mname);
if (!ptr) goto exit;
ptr = getDomainName(msg, ptr, end, rname);
if (!ptr) goto exit;
if ((end - ptr) < 20) goto exit;
serial = ReadField32(&ptr[0]);
refresh = ReadField32(&ptr[4]);
retry = ReadField32(&ptr[8]);
expire = ReadField32(&ptr[12]);
minimum = ReadField32(&ptr[16]);
mDNS_snprintf_add(&dst, lim, "%##s %##s %lu %lu %lu %lu %lu", mname, rname, (unsigned long)serial,
(unsigned long)refresh, (unsigned long)retry, (unsigned long)expire, (unsigned long)minimum);
handled = mDNStrue;
break;
}
default:
break;
}
if (!handled) mDNS_snprintf_add(&dst, lim, "RDATA[%u]: %.*H", rdlength, rdlength, rdata);
mDNS_snprintf_add(&dst, lim, " (%lu)", (unsigned long)ttl);
ptr = rdata + rdlength;
}
exit:
return;
}
// Note: DumpPacket expects the packet header fields in host byte order, not network byte order
mDNSexport void DumpPacket(mStatus status, mDNSBool sent, char *transport,
const mDNSAddr *srcaddr, mDNSIPPort srcport,
const mDNSAddr *dstaddr, mDNSIPPort dstport, const DNSMessage *const msg, const mDNSu8 *const end)
{
char buffer[512];
char *dst = buffer;
const char *const lim = &buffer[512];
buffer[0] = '\0';
if (!status) mDNS_snprintf_add(&dst, lim, sent ? "Sent" : "Received");
else mDNS_snprintf_add(&dst, lim, "ERROR %d %sing", status, sent ? "Send" : "Receiv");
mDNS_snprintf_add(&dst, lim, " %s DNS Message %u bytes from ", transport, (unsigned long)(end - (const mDNSu8 *)msg));
if (sent) mDNS_snprintf_add(&dst, lim, "port %d", mDNSVal16(srcport));
else mDNS_snprintf_add(&dst, lim, "%#a:%d", srcaddr, mDNSVal16(srcport));
if (dstaddr || !mDNSIPPortIsZero(dstport)) mDNS_snprintf_add(&dst, lim, " to %#a:%d", dstaddr, mDNSVal16(dstport));
LogInfo("%s", buffer);
buffer[0] = '\0';
DNSMessageDump(msg, end, buffer, (mDNSu32)sizeof(buffer));
LogInfo("%s", buffer);
} }
// *************************************************************************** // ***************************************************************************
@ -3824,7 +3950,7 @@ mDNSexport mStatus mDNSSendDNSMessage(mDNS *const m, DNSMessage *const msg, mDNS
// Dump the packet with the HINFO and TSIG // Dump the packet with the HINFO and TSIG
if (mDNS_PacketLoggingEnabled && !mDNSOpaque16IsZero(msg->h.id)) if (mDNS_PacketLoggingEnabled && !mDNSOpaque16IsZero(msg->h.id))
DumpPacket(m, status, mDNStrue, sock && (sock->flags & kTCPSocketFlags_UseTLS) ? "TLS" : sock ? "TCP" : "UDP", mDNSNULL, src ? src->port : MulticastDNSPort, dst, dstport, msg, end); DumpPacket(status, mDNStrue, sock && (sock->flags & kTCPSocketFlags_UseTLS) ? "TLS" : sock ? "TCP" : "UDP", mDNSNULL, src ? src->port : MulticastDNSPort, dst, dstport, msg, end);
// put the number of additionals back the way it was // put the number of additionals back the way it was
msg->h.numAdditionals = numAdditionals; msg->h.numAdditionals = numAdditionals;
@ -4053,6 +4179,9 @@ static const struct mDNSprintf_format
unsigned int precision; unsigned int precision;
} mDNSprintf_format_default = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; } mDNSprintf_format_default = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
#define kHexDigitsLowercase "0123456789abcdef"
#define kHexDigitsUppercase "0123456789ABCDEF";
mDNSexport mDNSu32 mDNS_vsnprintf(char *sbuffer, mDNSu32 buflen, const char *fmt, va_list arg) mDNSexport mDNSu32 mDNS_vsnprintf(char *sbuffer, mDNSu32 buflen, const char *fmt, va_list arg)
{ {
mDNSu32 nwritten = 0; mDNSu32 nwritten = 0;
@ -4064,6 +4193,7 @@ mDNSexport mDNSu32 mDNS_vsnprintf(char *sbuffer, mDNSu32 buflen, const char *fmt
for (c = *fmt; c != 0; c = *++fmt) for (c = *fmt; c != 0; c = *++fmt)
{ {
unsigned long n; unsigned long n;
int hexdump = mDNSfalse;
if (c != '%') if (c != '%')
{ {
*sbuffer++ = (char)c; *sbuffer++ = (char)c;
@ -4190,10 +4320,63 @@ decimal: if (!F.havePrecision)
a[0], a[1], a[2], a[3]); break; a[0], a[1], a[2], a[3]); break;
case 6: i = mDNS_snprintf(mDNS_VACB, sizeof(mDNS_VACB), "%02X:%02X:%02X:%02X:%02X:%02X", case 6: i = mDNS_snprintf(mDNS_VACB, sizeof(mDNS_VACB), "%02X:%02X:%02X:%02X:%02X:%02X",
a[0], a[1], a[2], a[3], a[4], a[5]); break; a[0], a[1], a[2], a[3], a[4], a[5]); break;
case 16: i = mDNS_snprintf(mDNS_VACB, sizeof(mDNS_VACB), case 16: {
"%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X", // Print IPv6 addresses according to RFC 5952, A Recommendation for IPv6 Address Text
a[0x0], a[0x1], a[0x2], a[0x3], a[0x4], a[0x5], a[0x6], a[0x7], // Representation. See <https://tools.ietf.org/html/rfc5952>.
a[0x8], a[0x9], a[0xA], a[0xB], a[0xC], a[0xD], a[0xE], a[0xF]); break;
int idx, runLen = 0, runStart = 0, maxRunLen = 0, maxRunStart = 0, maxRunEnd;
// Find the leftmost longest run of consecutive zero hextets.
for (idx = 0; idx < 8; ++idx)
{
const unsigned int hextet = (a[idx * 2] << 8) | a[(idx * 2) + 1];
if (hextet == 0)
{
if (runLen++ == 0) runStart = idx;
if (runLen > maxRunLen)
{
maxRunStart = runStart;
maxRunLen = runLen;
}
}
else
{
// If the number of remaining hextets is less than or equal to the length of the longest
// run so far, then we've found the leftmost longest run.
if ((8 - (idx + 1)) <= maxRunLen) break;
runLen = 0;
}
}
// Compress the leftmost longest run of two or more consecutive zero hextets as "::".
// For each reminaing hextet, suppress zeros leading up to the least-significant nibble, which
// is always written, even if it's zero. Because of this requirement, it's easier to write the
// IPv6 address in reverse. Also, write a colon separator before each hextet except for the
// first one.
s = mDNS_VACB_Lim;
maxRunEnd = (maxRunLen >= 2) ? (maxRunStart + maxRunLen - 1) : -1;
for (idx = 7; idx >= 0; --idx)
{
if (idx == maxRunEnd)
{
if (idx == 7) *--s = ':';
idx = maxRunStart;
*--s = ':';
}
else
{
unsigned int hextet = (a[idx * 2] << 8) | a[(idx * 2) + 1];
do {
*--s = kHexDigitsLowercase[hextet % 16];
hextet /= 16;
} while (hextet);
if (idx > 0) *--s = ':';
}
}
i = (unsigned int)(mDNS_VACB_Lim - s);
}
break;
default: i = mDNS_snprintf(mDNS_VACB, sizeof(mDNS_VACB), "%s", "<< ERROR: Must specify" default: i = mDNS_snprintf(mDNS_VACB, sizeof(mDNS_VACB), "%s", "<< ERROR: Must specify"
" address size (i.e. %.4a=IPv4, %.6a=Ethernet, %.16a=IPv6) >>"); break; " address size (i.e. %.4a=IPv4, %.6a=Ethernet, %.16a=IPv6) >>"); break;
} }
@ -4203,9 +4386,9 @@ decimal: if (!F.havePrecision)
case 'p': F.havePrecision = F.lSize = 1; case 'p': F.havePrecision = F.lSize = 1;
F.precision = sizeof(void*) * 2; // 8 characters on 32-bit; 16 characters on 64-bit F.precision = sizeof(void*) * 2; // 8 characters on 32-bit; 16 characters on 64-bit
case 'X': digits = "0123456789ABCDEF"; case 'X': digits = kHexDigitsUppercase;
goto hexadecimal; goto hexadecimal;
case 'x': digits = "0123456789abcdef"; case 'x': digits = kHexDigitsLowercase;
hexadecimal: if (F.lSize) n = va_arg(arg, unsigned long); hexadecimal: if (F.lSize) n = va_arg(arg, unsigned long);
else n = va_arg(arg, unsigned int); else n = va_arg(arg, unsigned int);
if (F.hSize) n = (unsigned short) n; if (F.hSize) n = (unsigned short) n;
@ -4288,6 +4471,12 @@ hexadecimal: if (F.lSize) n = va_arg(arg, unsigned long);
{ i = F.precision; while (i>0 && (s[i] & 0xC0) == 0x80) i--;} { i = F.precision; while (i>0 && (s[i] & 0xC0) == 0x80) i--;}
break; break;
case 'H': {
s = va_arg(arg, char *);
hexdump = mDNStrue;
}
break;
case 'n': s = va_arg(arg, char *); case 'n': s = va_arg(arg, char *);
if (F.hSize) *(short *) s = (short)nwritten; if (F.hSize) *(short *) s = (short)nwritten;
else if (F.lSize) *(long *) s = (long)nwritten; else if (F.lSize) *(long *) s = (long)nwritten;
@ -4308,14 +4497,34 @@ hexadecimal: if (F.lSize) n = va_arg(arg, unsigned long);
if (++nwritten >= buflen) goto exit; if (++nwritten >= buflen) goto exit;
} while (i < --F.fieldWidth); } while (i < --F.fieldWidth);
// Make sure we don't truncate in the middle of a UTF-8 character. if (hexdump)
// Note: s[i] is the first eliminated character; i.e. the next character *after* the last character of the {
// allowed output. If s[i] is a UTF-8 continuation character, then we've cut a unicode character in half, char *dst = sbuffer;
// so back up 'i' until s[i] is no longer a UTF-8 continuation character. (if the input was proprly const char *const lim = &sbuffer[buflen - nwritten];
// formed, s[i] will now be the UTF-8 start character of the multi-byte character we just eliminated). if (F.havePrecision)
if (i > buflen - nwritten) {
{ i = buflen - nwritten; while (i>0 && (s[i] & 0xC0) == 0x80) i--;} for (i = 0; (i < F.precision) && (dst < lim); i++)
for (j=0; j<i; j++) *sbuffer++ = *s++; // Write the converted result {
const unsigned int b = (unsigned int) *s++;
if (i > 0) *dst++ = ' ';
if (dst < lim) *dst++ = kHexDigitsLowercase[(b >> 4) & 0xF];
if (dst < lim) *dst++ = kHexDigitsLowercase[ b & 0xF];
}
}
i = (unsigned int)(dst - sbuffer);
sbuffer = dst;
}
else
{
// Make sure we don't truncate in the middle of a UTF-8 character.
// Note: s[i] is the first eliminated character; i.e. the next character *after* the last character of the
// allowed output. If s[i] is a UTF-8 continuation character, then we've cut a unicode character in half,
// so back up 'i' until s[i] is no longer a UTF-8 continuation character. (if the input was proprly
// formed, s[i] will now be the UTF-8 start character of the multi-byte character we just eliminated).
if (i > buflen - nwritten)
{ i = buflen - nwritten; while (i>0 && (s[i] & 0xC0) == 0x80) i--;}
for (j=0; j<i; j++) *sbuffer++ = *s++; // Write the converted result
}
nwritten += i; nwritten += i;
if (nwritten >= buflen) goto exit; if (nwritten >= buflen) goto exit;

4
mDNSResponder/mDNSCore/DNSCommon.h
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2002-2003 Apple Computer, Inc. All rights reserved. * Copyright (c) 2002-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -260,7 +260,7 @@ extern const mDNSu8 *LocateAdditionals(const DNSMessage *const msg, const mDNSu8
extern const mDNSu8 *LocateOptRR(const DNSMessage *const msg, const mDNSu8 *const end, int minsize); extern const mDNSu8 *LocateOptRR(const DNSMessage *const msg, const mDNSu8 *const end, int minsize);
extern const rdataOPT *GetLLQOptData(mDNS *const m, const DNSMessage *const msg, const mDNSu8 *const end); extern const rdataOPT *GetLLQOptData(mDNS *const m, const DNSMessage *const msg, const mDNSu8 *const end);
extern mDNSBool GetPktLease(mDNS *const m, const DNSMessage *const msg, const mDNSu8 *const end, mDNSu32 *const lease); extern mDNSBool GetPktLease(mDNS *const m, const DNSMessage *const msg, const mDNSu8 *const end, mDNSu32 *const lease);
extern void DumpPacket(mDNS *const m, mStatus status, mDNSBool sent, char *transport, extern void DumpPacket(mStatus status, mDNSBool sent, char *transport,
const mDNSAddr *srcaddr, mDNSIPPort srcport, const mDNSAddr *srcaddr, mDNSIPPort srcport,
const mDNSAddr *dstaddr, mDNSIPPort dstport, const DNSMessage *const msg, const mDNSu8 *const end); const mDNSAddr *dstaddr, mDNSIPPort dstport, const DNSMessage *const msg, const mDNSu8 *const end);
extern mDNSBool RRAssertsNonexistence(const ResourceRecord *const rr, mDNSu16 type); extern mDNSBool RRAssertsNonexistence(const ResourceRecord *const rr, mDNSu16 type);

261
mDNSResponder/mDNSCore/mDNS.c
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2002-2017 Apple Inc. All rights reserved. * Copyright (c) 2002-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -548,6 +548,7 @@ mDNSexport void AnswerQuestionByFollowingCNAME(mDNS *const m, DNSQuestion *q, Re
// because mDNS_StartQuery_internal re-initializes CNAMEReferrals to zero // because mDNS_StartQuery_internal re-initializes CNAMEReferrals to zero
q->CNAMEReferrals = c; q->CNAMEReferrals = c;
#if AWD_METRICS #if AWD_METRICS
metrics.expiredAnswerState = q->metrics.expiredAnswerState; // We want the newly initialized state for this value
q->metrics = metrics; q->metrics = metrics;
#endif #endif
if (sock) if (sock)
@ -785,6 +786,7 @@ mDNSlocal void AnswerAllLocalQuestionsWithLocalAuthRecord(mDNS *const m, AuthRec
#define GoodbyeCount ((mDNSu8)3) #define GoodbyeCount ((mDNSu8)3)
#define WakeupCount ((mDNSu8)18) #define WakeupCount ((mDNSu8)18)
#define MAX_PROBE_RESTARTS ((mDNSu8)20) #define MAX_PROBE_RESTARTS ((mDNSu8)20)
#define MAX_GHOST_TIME ((mDNSs32)((60*60*24*7)*mDNSPlatformOneSecond)) // One week
// Number of wakeups we send if WakeOnResolve is set in the question // Number of wakeups we send if WakeOnResolve is set in the question
#define InitialWakeOnResolveCount ((mDNSu8)3) #define InitialWakeOnResolveCount ((mDNSu8)3)
@ -3220,21 +3222,25 @@ mDNSlocal mDNSBool BuildQuestion(mDNS *const m, const NetworkInterfaceInfo *intf
// Depth 3: PTR "_services._dns-sd._udp.local." refers to "_example._tcp.local."; may be stale // Depth 3: PTR "_services._dns-sd._udp.local." refers to "_example._tcp.local."; may be stale
// Currently depths 4 and 5 are not expected to occur; if we did get to depth 5 we'd reconfim any records we // Currently depths 4 and 5 are not expected to occur; if we did get to depth 5 we'd reconfim any records we
// found referring to the given name, but not recursively descend any further reconfirm *their* antecedents. // found referring to the given name, but not recursively descend any further reconfirm *their* antecedents.
mDNSlocal void ReconfirmAntecedents(mDNS *const m, const domainname *const name, const mDNSu32 namehash, const int depth) mDNSlocal void ReconfirmAntecedents(mDNS *const m, const domainname *const name, const mDNSu32 namehash, const mDNSInterfaceID InterfaceID, const int depth)
{ {
mDNSu32 slot; mDNSu32 slot;
CacheGroup *cg; const CacheGroup *cg;
CacheRecord *cr; CacheRecord *cr;
debugf("ReconfirmAntecedents (depth=%d) for %##s", depth, name->c); debugf("ReconfirmAntecedents (depth=%d) for %##s", depth, name->c);
if (!InterfaceID) return; // mDNS records have a non-zero InterfaceID. If InterfaceID is 0, then there's nothing to do.
FORALL_CACHERECORDS(slot, cg, cr) FORALL_CACHERECORDS(slot, cg, cr)
{ {
domainname *crtarget = GetRRDomainNameTarget(&cr->resrec); const domainname *crtarget;
if (crtarget && cr->resrec.rdatahash == namehash && SameDomainName(crtarget, name)) if (cr->resrec.InterfaceID != InterfaceID) continue; // Skip non-mDNS records and mDNS records from other interfaces.
if (cr->resrec.rdatahash != namehash) continue; // Skip records whose rdata hash doesn't match the name hash.
crtarget = GetRRDomainNameTarget(&cr->resrec);
if (crtarget && SameDomainName(crtarget, name))
{ {
LogInfo("ReconfirmAntecedents: Reconfirming (depth=%d) %s", depth, CRDisplayString(m, cr)); LogInfo("ReconfirmAntecedents: Reconfirming (depth=%d, InterfaceID=%p) %s", depth, InterfaceID, CRDisplayString(m, cr));
mDNS_Reconfirm_internal(m, cr, kDefaultReconfirmTimeForNoAnswer); mDNS_Reconfirm_internal(m, cr, kDefaultReconfirmTimeForNoAnswer);
if (depth < 5) if (depth < 5)
ReconfirmAntecedents(m, cr->resrec.name, cr->resrec.namehash, depth+1); ReconfirmAntecedents(m, cr->resrec.name, cr->resrec.namehash, InterfaceID, depth+1);
} }
} }
} }
@ -3612,7 +3618,8 @@ mDNSlocal void SendQueries(mDNS *const m)
{ {
q->ThisQInterval = MaxQuestionInterval; q->ThisQInterval = MaxQuestionInterval;
} }
else if (q->CurrentAnswers == 0 && q->ThisQInterval == InitialQuestionInterval * QuestionIntervalStep3 && !q->RequestUnicast && else if (mDNSOpaque16IsZero(q->TargetQID) && q->InterfaceID &&
q->CurrentAnswers == 0 && q->ThisQInterval == InitialQuestionInterval * QuestionIntervalStep3 && !q->RequestUnicast &&
!(RRTypeIsAddressType(q->qtype) && CacheHasAddressTypeForName(m, &q->qname, q->qnamehash))) !(RRTypeIsAddressType(q->qtype) && CacheHasAddressTypeForName(m, &q->qname, q->qnamehash)))
{ {
// Generally don't need to log this. // Generally don't need to log this.
@ -3623,7 +3630,7 @@ mDNSlocal void SendQueries(mDNS *const m)
debugf("SendQueries: Zero current answers for %##s (%s); will reconfirm antecedents", debugf("SendQueries: Zero current answers for %##s (%s); will reconfirm antecedents",
q->qname.c, DNSTypeName(q->qtype)); q->qname.c, DNSTypeName(q->qtype));
// Sending third query, and no answers yet; time to begin doubting the source // Sending third query, and no answers yet; time to begin doubting the source
ReconfirmAntecedents(m, &q->qname, q->qnamehash, 0); ReconfirmAntecedents(m, &q->qname, q->qnamehash, q->InterfaceID, 0);
} }
} }
@ -4107,8 +4114,9 @@ mDNSexport void AnswerCurrentQuestionWithResourceRecord(mDNS *const m, CacheReco
DNSQuestion *const q = m->CurrentQuestion; DNSQuestion *const q = m->CurrentQuestion;
const mDNSBool followcname = FollowCNAME(q, &rr->resrec, AddRecord); const mDNSBool followcname = FollowCNAME(q, &rr->resrec, AddRecord);
verbosedebugf("AnswerCurrentQuestionWithResourceRecord:%4lu %s TTL %d %s", verbosedebugf("AnswerCurrentQuestionWithResourceRecord:%4lu %s (%s) TTL %d %s",
q->CurrentAnswers, AddRecord ? "Add" : "Rmv", rr->resrec.rroriginalttl, CRDisplayString(m, rr)); q->CurrentAnswers, AddRecord ? "Add" : "Rmv", MortalityDisplayString(rr->resrec.mortality),
rr->resrec.rroriginalttl, CRDisplayString(m, rr));
// When the response for the question was validated, the entire rrset was validated. If we deliver // When the response for the question was validated, the entire rrset was validated. If we deliver
// a RMV for a single record in the rrset, we invalidate the response. If we deliver another add // a RMV for a single record in the rrset, we invalidate the response. If we deliver another add
@ -4150,6 +4158,10 @@ mDNSexport void AnswerCurrentQuestionWithResourceRecord(mDNS *const m, CacheReco
return; return;
} }
// Set the record to immortal if appropriate
if (AddRecord == QC_add && Question_uDNS(q) && rr->resrec.RecordType != kDNSRecordTypePacketNegative &&
q->allowExpired != AllowExpired_None && rr->resrec.mortality == Mortality_Mortal ) rr->resrec.mortality = Mortality_Immortal; // Update a non-expired cache record to immortal if appropriate
#if AWD_METRICS #if AWD_METRICS
if ((AddRecord == QC_add) && Question_uDNS(q) && !followcname) if ((AddRecord == QC_add) && Question_uDNS(q) && !followcname)
{ {
@ -4170,7 +4182,7 @@ mDNSexport void AnswerCurrentQuestionWithResourceRecord(mDNS *const m, CacheReco
responseLatencyMs = 0; responseLatencyMs = 0;
} }
MetricsUpdateDNSQueryStats(queryName, q->qtype, &rr->resrec, q->metrics.querySendCount, responseLatencyMs, isForCellular); MetricsUpdateDNSQueryStats(queryName, q->qtype, &rr->resrec, q->metrics.querySendCount, q->metrics.expiredAnswerState, responseLatencyMs, isForCellular);
q->metrics.answered = mDNStrue; q->metrics.answered = mDNStrue;
} }
if (q->metrics.querySendCount > 0) if (q->metrics.querySendCount > 0)
@ -4183,8 +4195,7 @@ mDNSexport void AnswerCurrentQuestionWithResourceRecord(mDNS *const m, CacheReco
// may be called twice, once when the record is received, and again when it's time to notify local clients. // may be called twice, once when the record is received, and again when it's time to notify local clients.
// If any counters or similar are added here, care must be taken to ensure that they are not double-incremented by this. // If any counters or similar are added here, care must be taken to ensure that they are not double-incremented by this.
rr->LastUsed = m->timenow; if (AddRecord == QC_add && !q->DuplicateOf && rr->CRActiveQuestion != q && rr->resrec.mortality != Mortality_Ghost)
if (AddRecord == QC_add && !q->DuplicateOf && rr->CRActiveQuestion != q)
{ {
if (!rr->CRActiveQuestion) m->rrcache_active++; // If not previously active, increment rrcache_active count if (!rr->CRActiveQuestion) m->rrcache_active++; // If not previously active, increment rrcache_active count
debugf("AnswerCurrentQuestionWithResourceRecord: Updating CRActiveQuestion from %p to %p for cache record %s, CurrentAnswer %d", debugf("AnswerCurrentQuestionWithResourceRecord: Updating CRActiveQuestion from %p to %p for cache record %s, CurrentAnswer %d",
@ -4293,14 +4304,21 @@ mDNSexport void AnswerCurrentQuestionWithResourceRecord(mDNS *const m, CacheReco
return; return;
} }
// Note: Proceed with caution here because client callback function is allowed to do anything, if ((m->CurrentQuestion == q) && !ValidatingQuestion(q))
// including starting/stopping queries, registering/deregistering records, etc. {
// // If we get a CNAME back while we are validating the response (i.e., CNAME for DS, DNSKEY, RRSIG),
// If we get a CNAME back while we are validating the response (i.e., CNAME for DS, DNSKEY, RRSIG), // don't follow them. If it is a ValidationRequired question, wait for the CNAME to be validated
// don't follow them. If it is a ValidationRequired question, wait for the CNAME to be validated // first before following it
// first before following it if (followcname) AnswerQuestionByFollowingCNAME(m, q, &rr->resrec);
if ((m->CurrentQuestion == q) && followcname && !ValidatingQuestion(q))
AnswerQuestionByFollowingCNAME(m, q, &rr->resrec); // If we are returning expired RRs, then remember the first expired qname we we can start the query again
if (rr->resrec.mortality == Mortality_Ghost && !q->firstExpiredQname.c[0] && (q->allowExpired == AllowExpired_AllowExpiredAnswers) && rr->resrec.RecordType != kDNSRecordTypePacketNegative)
{
debugf("AnswerCurrentQuestionWithResourceRecord: Keeping track of domain for expired RR %s for question %p", CRDisplayString(m,rr), q);
// Note: question->qname is already changed at this point if following a CNAME
AssignDomainName(&q->firstExpiredQname, rr->resrec.name); // Update firstExpiredQname
}
}
} }
mDNSlocal void CacheRecordDeferredAdd(mDNS *const m, CacheRecord *rr) mDNSlocal void CacheRecordDeferredAdd(mDNS *const m, CacheRecord *rr)
@ -4474,7 +4492,8 @@ mDNSlocal void CacheRecordRmv(mDNS *const m, CacheRecord *rr)
// response. A cache may be present that answers this question e.g., cache entry generated // response. A cache may be present that answers this question e.g., cache entry generated
// before the question became suppressed. We need to skip the suppressed questions here as // before the question became suppressed. We need to skip the suppressed questions here as
// the RMV event has already been generated. // the RMV event has already been generated.
if (!QuerySuppressed(q) && ResourceRecordAnswersQuestion(&rr->resrec, q)) if (!QuerySuppressed(q) && ResourceRecordAnswersQuestion(&rr->resrec, q) &&
(q->allowExpired == AllowExpired_None || rr->resrec.mortality == Mortality_Mortal))
{ {
verbosedebugf("CacheRecordRmv %p %s", rr, CRDisplayString(m, rr)); verbosedebugf("CacheRecordRmv %p %s", rr, CRDisplayString(m, rr));
q->FlappingInterface1 = mDNSNULL; q->FlappingInterface1 = mDNSNULL;
@ -4503,11 +4522,11 @@ mDNSlocal void CacheRecordRmv(mDNS *const m, CacheRecord *rr)
} }
if (rr->resrec.rdata->MaxRDLength) // Never generate "remove" events for negative results if (rr->resrec.rdata->MaxRDLength) // Never generate "remove" events for negative results
{ {
if (q->CurrentAnswers == 0) if ((q->CurrentAnswers == 0) && mDNSOpaque16IsZero(q->TargetQID))
{ {
LogInfo("CacheRecordRmv: Last answer for %##s (%s) expired from cache; will reconfirm antecedents", LogInfo("CacheRecordRmv: Last answer for %##s (%s) expired from cache; will reconfirm antecedents",
q->qname.c, DNSTypeName(q->qtype)); q->qname.c, DNSTypeName(q->qtype));
ReconfirmAntecedents(m, &q->qname, q->qnamehash, 0); ReconfirmAntecedents(m, &q->qname, q->qnamehash, rr->resrec.InterfaceID, 0);
} }
AnswerCurrentQuestionWithResourceRecord(m, rr, QC_rmv); AnswerCurrentQuestionWithResourceRecord(m, rr, QC_rmv);
} }
@ -4631,16 +4650,15 @@ mDNSlocal void CheckCacheExpiration(mDNS *const m, const mDNSu32 slot, CacheGrou
while (*rp) while (*rp)
{ {
CacheRecord *const rr = *rp; CacheRecord *const rr = *rp;
mDNSBool recordReleased = mDNSfalse;
mDNSs32 event = RRExpireTime(rr); mDNSs32 event = RRExpireTime(rr);
if (m->timenow - event >= 0) // If expired, delete it if (m->timenow - event >= 0) // If expired, delete it
{ {
*rp = rr->next; // Cut it from the list
verbosedebugf("CheckCacheExpiration: Deleting%7d %7d %p %s",
m->timenow - rr->TimeRcvd, rr->resrec.rroriginalttl, rr->CRActiveQuestion, CRDisplayString(m, rr));
if (rr->CRActiveQuestion) // If this record has one or more active questions, tell them it's going away if (rr->CRActiveQuestion) // If this record has one or more active questions, tell them it's going away
{ {
DNSQuestion *q = rr->CRActiveQuestion; DNSQuestion *q = rr->CRActiveQuestion;
verbosedebugf("CheckCacheExpiration: Removing%7d %7d %p %s",
m->timenow - rr->TimeRcvd, rr->resrec.rroriginalttl, rr->CRActiveQuestion, CRDisplayString(m, rr));
// When a cache record is about to expire, we expect to do four queries at 80-82%, 85-87%, 90-92% and // When a cache record is about to expire, we expect to do four queries at 80-82%, 85-87%, 90-92% and
// then 95-97% of the TTL. If the DNS server does not respond, then we will remove the cache entry // then 95-97% of the TTL. If the DNS server does not respond, then we will remove the cache entry
// before we pick a new DNS server. As the question interval is set to MaxQuestionInterval, we may // before we pick a new DNS server. As the question interval is set to MaxQuestionInterval, we may
@ -4657,9 +4675,30 @@ mDNSlocal void CheckCacheExpiration(mDNS *const m, const mDNSu32 slot, CacheGrou
CacheRecordRmv(m, rr); CacheRecordRmv(m, rr);
m->rrcache_active--; m->rrcache_active--;
} }
ReleaseCacheRecord(m, rr);
event += MAX_GHOST_TIME; // Adjust so we can check for a ghost expiration
if (rr->resrec.mortality == Mortality_Mortal || // Normal expired mortal record that needs released
(rr->resrec.mortality == Mortality_Ghost && m->timenow - event >= 0)) // A ghost record that expired more than MAX_GHOST_TIME ago
{ // Release as normal
*rp = rr->next; // Cut it from the list before ReleaseCacheRecord
verbosedebugf("CheckCacheExpiration: Deleting (%s)%7d %7d %p %s",
MortalityDisplayString(rr->resrec.mortality),
m->timenow - rr->TimeRcvd, rr->resrec.rroriginalttl, rr->CRActiveQuestion, CRDisplayString(m, rr));
ReleaseCacheRecord(m, rr);
recordReleased = mDNStrue;
}
else // An immortal record needs to become a ghost when it expires
{ // Don't release this entry
if (rr->resrec.mortality == Mortality_Immortal)
{
rr->resrec.mortality = Mortality_Ghost; // Expired immortal records become ghosts
verbosedebugf("CheckCacheExpiration: NOT Deleting (%s)%7d %7d %p %s",
MortalityDisplayString(rr->resrec.mortality),
m->timenow - rr->TimeRcvd, rr->resrec.rroriginalttl, rr->CRActiveQuestion, CRDisplayString(m, rr));
}
}
} }
else // else, not expired; see if we need to query else // else, not expired; see if we need to query
{ {
// If waiting to delay delivery, do nothing until then // If waiting to delay delivery, do nothing until then
if (rr->DelayDelivery && rr->DelayDelivery - m->timenow > 0) if (rr->DelayDelivery && rr->DelayDelivery - m->timenow > 0)
@ -4682,6 +4721,10 @@ mDNSlocal void CheckCacheExpiration(mDNS *const m, const mDNSu32 slot, CacheGrou
} }
} }
} }
}
if (!recordReleased) // Schedule if we did not release the record
{
verbosedebugf("CheckCacheExpiration:%6d %5d %s", verbosedebugf("CheckCacheExpiration:%6d %5d %s",
(event - m->timenow) / mDNSPlatformOneSecond, CacheCheckGracePeriod(rr), CRDisplayString(m, rr)); (event - m->timenow) / mDNSPlatformOneSecond, CacheCheckGracePeriod(rr), CRDisplayString(m, rr));
if (m->rrcache_nextcheck[slot] - event > 0) if (m->rrcache_nextcheck[slot] - event > 0)
@ -4893,12 +4936,7 @@ mDNSlocal void AnswerNewQuestion(mDNS *const m)
{ {
// SecsSinceRcvd is whole number of elapsed seconds, rounded down // SecsSinceRcvd is whole number of elapsed seconds, rounded down
mDNSu32 SecsSinceRcvd = ((mDNSu32)(m->timenow - rr->TimeRcvd)) / mDNSPlatformOneSecond; mDNSu32 SecsSinceRcvd = ((mDNSu32)(m->timenow - rr->TimeRcvd)) / mDNSPlatformOneSecond;
if (rr->resrec.rroriginalttl <= SecsSinceRcvd) if (rr->resrec.rroriginalttl <= SecsSinceRcvd && q->allowExpired != AllowExpired_AllowExpiredAnswers) continue; // Go to next one in loop
{
LogMsg("AnswerNewQuestion: How is rr->resrec.rroriginalttl %lu <= SecsSinceRcvd %lu for %s %d %d",
rr->resrec.rroriginalttl, SecsSinceRcvd, CRDisplayString(m, rr), m->timenow, rr->TimeRcvd);
continue; // Go to next one in loop
}
// If this record set is marked unique, then that means we can reasonably assume we have the whole set // If this record set is marked unique, then that means we can reasonably assume we have the whole set
// -- we don't need to rush out on the network and query immediately to see if there are more answers out there // -- we don't need to rush out on the network and query immediately to see if there are more answers out there
@ -4908,6 +4946,9 @@ mDNSlocal void AnswerNewQuestion(mDNS *const m)
if (rr->resrec.rdlength > SmallRecordLimit) q->LargeAnswers++; if (rr->resrec.rdlength > SmallRecordLimit) q->LargeAnswers++;
if (rr->resrec.RecordType & kDNSRecordTypePacketUniqueMask) q->UniqueAnswers++; if (rr->resrec.RecordType & kDNSRecordTypePacketUniqueMask) q->UniqueAnswers++;
AnsweredFromCache = mDNStrue; AnsweredFromCache = mDNStrue;
#if AWD_METRICS
if (q->metrics.expiredAnswerState == ExpiredAnswer_Allowed) q->metrics.expiredAnswerState = ExpiredAnswer_AnsweredWithExpired;
#endif
AnswerCurrentQuestionWithResourceRecord(m, rr, QC_add); AnswerCurrentQuestionWithResourceRecord(m, rr, QC_add);
if (m->CurrentQuestion != q) break; // If callback deleted q, then we're finished here if (m->CurrentQuestion != q) break; // If callback deleted q, then we're finished here
} }
@ -4930,6 +4971,21 @@ mDNSlocal void AnswerNewQuestion(mDNS *const m)
if (m->CurrentQuestion != q) { debugf("AnswerNewQuestion: Question deleted while giving negative answer"); goto exit; } if (m->CurrentQuestion != q) { debugf("AnswerNewQuestion: Question deleted while giving negative answer"); goto exit; }
if (q->allowExpired == AllowExpired_AllowExpiredAnswers)
{
q->allowExpired = AllowExpired_MakeAnswersImmortal; // After looking through the cache for an answer, demote to make immortal
if (q->firstExpiredQname.c[0]) // If an original query name was saved on an expired answer, start it over in case it is updated
{
LogMsg("AnswerNewQuestion: Restarting original question %p firstExpiredQname %##s for allowExpiredAnswers question", q, &q->firstExpiredQname.c);
mDNS_StopQuery_internal(m, q); // Stop old query
AssignDomainName(&q->qname, &q->firstExpiredQname); // Update qname
q->qnamehash = DomainNameHashValue(&q->qname); // and namehash
mDNS_StartQuery_internal(m, q); // start new query
q->CNAMEReferrals = 0; // Reset referral count
q->firstExpiredQname.c[0] = 0; // Erase the domain name
}
}
// Note: When a query gets suppressed or retried with search domains, we de-activate the question. // Note: When a query gets suppressed or retried with search domains, we de-activate the question.
// Hence we don't execute the following block of code for those cases. // Hence we don't execute the following block of code for those cases.
if (ShouldQueryImmediately && ActiveQuestion(q)) if (ShouldQueryImmediately && ActiveQuestion(q))
@ -7467,6 +7523,7 @@ mDNSlocal mDNSu8 *ProcessQuery(mDNS *const m, const DNSMessage *const query, con
AuthRecord **nrp = &ResponseRecords; AuthRecord **nrp = &ResponseRecords;
#if POOF_ENABLED #if POOF_ENABLED
mDNSBool notD2D = !mDNSPlatformInterfaceIsD2D(InterfaceID); // We don't run the POOF algorithm on D2D interfaces.
CacheRecord *ExpectedAnswers = mDNSNULL; // Records in our cache we expect to see updated CacheRecord *ExpectedAnswers = mDNSNULL; // Records in our cache we expect to see updated
CacheRecord **eap = &ExpectedAnswers; CacheRecord **eap = &ExpectedAnswers;
#endif // POOF_ENABLED #endif // POOF_ENABLED
@ -7626,18 +7683,21 @@ mDNSlocal mDNSu8 *ProcessQuery(mDNS *const m, const DNSMessage *const query, con
if (QuestionNeedsMulticastResponse && !(query->h.flags.b[0] & kDNSFlag0_TC)) if (QuestionNeedsMulticastResponse && !(query->h.flags.b[0] & kDNSFlag0_TC))
{ {
#if POOF_ENABLED #if POOF_ENABLED
CacheGroup *cg = CacheGroupForName(m, pktq.qnamehash, &pktq.qname); if (notD2D)
CacheRecord *cr; {
CacheGroup *cg = CacheGroupForName(m, pktq.qnamehash, &pktq.qname);
CacheRecord *cr;
// Make a list indicating which of our own cache records we expect to see updated as a result of this query // Make a list indicating which of our own cache records we expect to see updated as a result of this query
// Note: Records larger than 1K are not habitually multicast, so don't expect those to be updated // Note: Records larger than 1K are not habitually multicast, so don't expect those to be updated
for (cr = cg ? cg->members : mDNSNULL; cr; cr=cr->next) for (cr = cg ? cg->members : mDNSNULL; cr; cr=cr->next)
if (SameNameRecordAnswersQuestion(&cr->resrec, &pktq) && cr->resrec.rdlength <= SmallRecordLimit) if (SameNameRecordAnswersQuestion(&cr->resrec, &pktq) && cr->resrec.rdlength <= SmallRecordLimit)
if (!cr->NextInKAList && eap != &cr->NextInKAList) if (!cr->NextInKAList && eap != &cr->NextInKAList)
{ {
*eap = cr; *eap = cr;
eap = &cr->NextInKAList; eap = &cr->NextInKAList;
} }
}
#endif // POOF_ENABLED #endif // POOF_ENABLED
// Check if this question is the same as any of mine. // Check if this question is the same as any of mine.
@ -7728,15 +7788,18 @@ mDNSlocal mDNSu8 *ProcessQuery(mDNS *const m, const DNSMessage *const query, con
ourcacherr = FindIdenticalRecordInCache(m, &m->rec.r.resrec); ourcacherr = FindIdenticalRecordInCache(m, &m->rec.r.resrec);
#if POOF_ENABLED #if POOF_ENABLED
// Having built our ExpectedAnswers list from the questions in this packet, we then remove if (notD2D)
// any records that are suppressed by the Known Answer list in this packet.
eap = &ExpectedAnswers;
while (*eap)
{ {
CacheRecord *cr = *eap; // Having built our ExpectedAnswers list from the questions in this packet, we then remove
if (cr->resrec.InterfaceID == InterfaceID && IdenticalResourceRecord(&m->rec.r.resrec, &cr->resrec)) // any records that are suppressed by the Known Answer list in this packet.
{ *eap = cr->NextInKAList; cr->NextInKAList = mDNSNULL; } eap = &ExpectedAnswers;
else eap = &cr->NextInKAList; while (*eap)
{
CacheRecord *cr = *eap;
if (cr->resrec.InterfaceID == InterfaceID && IdenticalResourceRecord(&m->rec.r.resrec, &cr->resrec))
{ *eap = cr->NextInKAList; cr->NextInKAList = mDNSNULL; }
else eap = &cr->NextInKAList;
}
} }
#endif // POOF_ENABLED #endif // POOF_ENABLED
@ -7900,7 +7963,7 @@ exit:
} }
#if POOF_ENABLED #if POOF_ENABLED
while (ExpectedAnswers) while (ExpectedAnswers && notD2D)
{ {
CacheRecord *cr = ExpectedAnswers; CacheRecord *cr = ExpectedAnswers;
ExpectedAnswers = cr->NextInKAList; ExpectedAnswers = cr->NextInKAList;
@ -8106,10 +8169,11 @@ mDNSexport CacheRecord *CreateNewCacheEntry(mDNS *const m, const mDNSu32 slot, C
if (!rr) NoCacheAnswer(m, &m->rec.r); if (!rr) NoCacheAnswer(m, &m->rec.r);
else else
{ {
RData *saveptr = rr->resrec.rdata; // Save the rr->resrec.rdata pointer RData *saveptr = rr->resrec.rdata; // Save the rr->resrec.rdata pointer
*rr = m->rec.r; // Block copy the CacheRecord object *rr = m->rec.r; // Block copy the CacheRecord object
rr->resrec.rdata = saveptr; // Restore rr->resrec.rdata after the structure assignment rr->resrec.rdata = saveptr; // Restore rr->resrec.rdata after the structure assignment
rr->resrec.name = cg->name; // And set rr->resrec.name to point into our CacheGroup header rr->resrec.name = cg->name; // And set rr->resrec.name to point into our CacheGroup header
rr->resrec.mortality = Mortality_Mortal;
// We need to add the anonymous info before we call CacheRecordAdd so that // We need to add the anonymous info before we call CacheRecordAdd so that
// if it finds a matching question with this record, it bumps up the counters like // if it finds a matching question with this record, it bumps up the counters like
@ -8176,6 +8240,7 @@ mDNSlocal void RefreshCacheRecord(mDNS *const m, CacheRecord *rr, mDNSu32 ttl)
rr->TimeRcvd = m->timenow; rr->TimeRcvd = m->timenow;
rr->resrec.rroriginalttl = ttl; rr->resrec.rroriginalttl = ttl;
rr->UnansweredQueries = 0; rr->UnansweredQueries = 0;
if (rr->resrec.mortality != Mortality_Mortal) rr->resrec.mortality = Mortality_Immortal;
SetNextCacheCheckTimeForRecord(m, rr); SetNextCacheCheckTimeForRecord(m, rr);
} }
@ -8246,7 +8311,7 @@ mDNSlocal mDNSBool IsResponseAcceptable(mDNS *const m, const CacheRecord *crlist
if (target && cr->resrec.rdatahash == rr->namehash && SameDomainName(target, rr->name)) if (target && cr->resrec.rdatahash == rr->namehash && SameDomainName(target, rr->name))
{ {
LogInfo("IsResponseAcceptable: Found a matching entry for %##s in the CacheFlushRecords %s", rr->name->c, CRDisplayString(m, cr)); LogDebug("IsResponseAcceptable: Found a matching entry for %##s in the CacheFlushRecords %s", rr->name->c, CRDisplayString(m, cr));
return (mDNStrue); return (mDNStrue);
} }
} }
@ -8745,6 +8810,12 @@ mDNSlocal CacheRecord* mDNSCoreReceiveCacheCheck(mDNS *const m, const DNSMessage
m->mDNSStats.CacheRefreshed++; m->mDNSStats.CacheRefreshed++;
if (rr->resrec.mortality == Mortality_Ghost && unicastQuestion && (unicastQuestion->allowExpired != AllowExpired_AllowExpiredAnswers) && !rr->DelayDelivery)
{
rr->DelayDelivery = NonZeroTime(m->timenow);
debugf("mDNSCoreReceiveCacheCheck: Reset DelayDelivery for mortalityExpired EXP:%d RR %s", m->timenow - RRExpireTime(rr), CRDisplayString(m, rr));
}
if (rr->resrec.rroriginalttl == 0) debugf("uDNS rescuing %s", CRDisplayString(m, rr)); if (rr->resrec.rroriginalttl == 0) debugf("uDNS rescuing %s", CRDisplayString(m, rr));
RefreshCacheRecord(m, rr, m->rec.r.resrec.rroriginalttl); RefreshCacheRecord(m, rr, m->rec.r.resrec.rroriginalttl);
rr->responseFlags = response->h.flags; rr->responseFlags = response->h.flags;
@ -9513,6 +9584,12 @@ exit:
r1->resrec.rrtype == r2->resrec.rrtype && r1->resrec.rrtype == r2->resrec.rrtype &&
r1->resrec.rrclass == r2->resrec.rrclass) r1->resrec.rrclass == r2->resrec.rrclass)
{ {
if (r1->resrec.mortality == Mortality_Mortal && r2->resrec.mortality != Mortality_Mortal)
{
verbosedebugf("mDNSCoreReceiveResponse: R1(%p) is being immortalized by R2(%p)", r1, r2);
r1->resrec.mortality = Mortality_Immortal; // Immortalize the replacement record
}
// If record is recent, just ensure the whole RRSet has the same TTL (as required by DNS semantics) // If record is recent, just ensure the whole RRSet has the same TTL (as required by DNS semantics)
// else, if record is old, mark it to be flushed // else, if record is old, mark it to be flushed
if (m->timenow - r2->TimeRcvd < mDNSPlatformOneSecond && RRExpireTime(r2) - m->timenow > mDNSPlatformOneSecond) if (m->timenow - r2->TimeRcvd < mDNSPlatformOneSecond && RRExpireTime(r2) - m->timenow > mDNSPlatformOneSecond)
@ -9588,7 +9665,23 @@ exit:
} }
else else
{ {
#if AWD_METRICS
if (r2->resrec.mortality == Mortality_Ghost)
{
DNSQuestion * q;
for (q = m->Questions; q; q=q->next)
{
if (!q->LongLived && ActiveQuestion(q) &&
ResourceRecordAnswersQuestion(&r2->resrec, q) &&
q->metrics.expiredAnswerState == ExpiredAnswer_AnsweredWithExpired)
{
q->metrics.expiredAnswerState = ExpiredAnswer_ExpiredAnswerChanged;
}
}
}
#endif
// Old uDNS records are scheduled to be purged instead of given at most one second to live. // Old uDNS records are scheduled to be purged instead of given at most one second to live.
r2->resrec.mortality = Mortality_Mortal; // We want it purged, so remove any immortality
mDNS_PurgeCacheResourceRecord(m, r2); mDNS_PurgeCacheResourceRecord(m, r2);
purgedRecords = mDNStrue; purgedRecords = mDNStrue;
} }
@ -10207,7 +10300,7 @@ mDNSlocal void mDNSCoreReceiveUpdate(mDNS *const m,
if (!InterfaceID || !m->SPSSocket || !mDNSSameIPPort(dstport, m->SPSSocket->port)) return; if (!InterfaceID || !m->SPSSocket || !mDNSSameIPPort(dstport, m->SPSSocket->port)) return;
if (mDNS_PacketLoggingEnabled) if (mDNS_PacketLoggingEnabled)
DumpPacket(m, mStatus_NoError, mDNSfalse, "UDP", srcaddr, srcport, dstaddr, dstport, msg, end); DumpPacket(mStatus_NoError, mDNSfalse, "UDP", srcaddr, srcport, dstaddr, dstport, msg, end);
ptr = LocateOptRR(msg, end, DNSOpt_LeaseData_Space + DNSOpt_OwnerData_ID_Space); ptr = LocateOptRR(msg, end, DNSOpt_LeaseData_Space + DNSOpt_OwnerData_ID_Space);
if (ptr) if (ptr)
@ -10466,7 +10559,6 @@ mDNSexport void MakeNegativeCacheRecord(mDNS *const m, CacheRecord *const cr,
cr->TimeRcvd = m->timenow; cr->TimeRcvd = m->timenow;
cr->DelayDelivery = 0; cr->DelayDelivery = 0;
cr->NextRequiredQuery = m->timenow; cr->NextRequiredQuery = m->timenow;
cr->LastUsed = m->timenow;
cr->CRActiveQuestion = mDNSNULL; cr->CRActiveQuestion = mDNSNULL;
cr->UnansweredQueries = 0; cr->UnansweredQueries = 0;
cr->LastUnansweredTime = 0; cr->LastUnansweredTime = 0;
@ -10561,7 +10653,7 @@ mDNSexport void mDNSCoreReceive(mDNS *const m, DNSMessage *const msg, const mDNS
{ {
ifid = mDNSInterface_Any; ifid = mDNSInterface_Any;
if (mDNS_PacketLoggingEnabled) if (mDNS_PacketLoggingEnabled)
DumpPacket(m, mStatus_NoError, mDNSfalse, TLS ? "TLS" : !dstaddr ? "TCP" : "UDP", srcaddr, srcport, dstaddr, dstport, msg, end); DumpPacket(mStatus_NoError, mDNSfalse, TLS ? "TLS" : !dstaddr ? "TCP" : "UDP", srcaddr, srcport, dstaddr, dstport, msg, end);
uDNS_ReceiveMsg(m, msg, end, srcaddr, srcport); uDNS_ReceiveMsg(m, msg, end, srcaddr, srcport);
// Note: mDNSCore also needs to get access to received unicast responses // Note: mDNSCore also needs to get access to received unicast responses
} }
@ -11126,11 +11218,11 @@ mDNSlocal DNSServer *GetServerForName(mDNS *m, const domainname *name, mDNSInter
curmatch = GetBestServer(m, name, InterfaceID, ServiceID, allValid, mDNSNULL, mDNStrue); curmatch = GetBestServer(m, name, InterfaceID, ServiceID, allValid, mDNSNULL, mDNStrue);
if (curmatch != mDNSNULL) if (curmatch != mDNSNULL)
LogInfo("GetServerForName: DNS server %#a:%d (Penalty Time Left %d) (Scope %s:%p) found for name %##s", &curmatch->addr, LogInfo("GetServerForName: DNS server %#a:%d (Penalty Time Left %d) (Scope %s:%p) for %##s", &curmatch->addr,
mDNSVal16(curmatch->port), (curmatch->penaltyTime ? (curmatch->penaltyTime - m->timenow) : 0), ifname ? ifname : "None", mDNSVal16(curmatch->port), (curmatch->penaltyTime ? (curmatch->penaltyTime - m->timenow) : 0), ifname ? ifname : "None",
InterfaceID, name); InterfaceID, name);
else else
LogInfo("GetServerForName: no DNS server (Scope %s:%p) found for name %##s", ifname ? ifname : "None", InterfaceID, name); LogInfo("GetServerForName: no DNS server (Scope %s:%p) for %##s", ifname ? ifname : "None", InterfaceID, name);
return(curmatch); return(curmatch);
} }
@ -11159,14 +11251,14 @@ mDNSexport DNSServer *GetServerForQuestion(mDNS *m, DNSQuestion *question)
if (curmatch != mDNSNULL) if (curmatch != mDNSNULL)
{ {
LogInfo("GetServerForQuestion: %p DNS server (%p) %#a:%d (Penalty Time Left %d) (Scope %s:%p:%d) found for name %##s (%s)", LogInfo("GetServerForQuestion: %p DNS server (%p) %#a:%d (Penalty Time Left %d) (Scope %s:%p:%d) for %##s (%s)",
question, curmatch, &curmatch->addr, mDNSVal16(curmatch->port), question, curmatch, &curmatch->addr, mDNSVal16(curmatch->port),
(curmatch->penaltyTime ? (curmatch->penaltyTime - m->timenow) : 0), ifname ? ifname : "None", (curmatch->penaltyTime ? (curmatch->penaltyTime - m->timenow) : 0), ifname ? ifname : "None",
InterfaceID, question->ServiceID, name, DNSTypeName(question->qtype)); InterfaceID, question->ServiceID, name, DNSTypeName(question->qtype));
} }
else else
{ {
LogInfo("GetServerForQuestion: %p no DNS server (Scope %s:%p:%d) found for name %##s (%s)", LogInfo("GetServerForQuestion: %p no DNS server (Scope %s:%p:%d) for %##s (%s)",
question, ifname ? ifname : "None", InterfaceID, question->ServiceID, name, DNSTypeName(question->qtype)); question, ifname ? ifname : "None", InterfaceID, question->ServiceID, name, DNSTypeName(question->qtype));
} }
@ -11218,14 +11310,14 @@ mDNSlocal mDNSBool ShouldSuppressUnicastQuery(mDNS *const m, DNSQuestion *q, DNS
// Some callers don't check for the qtype // Some callers don't check for the qtype
if (q->qtype != kDNSType_A && q->qtype != kDNSType_AAAA) if (q->qtype != kDNSType_A && q->qtype != kDNSType_AAAA)
{ {
LogInfo("ShouldSuppressUnicastQuery: Query not suppressed for %##s, qtype %s, not A/AAAA type", q->qname.c, DNSTypeName(q->qtype)); LogDebug("ShouldSuppressUnicastQuery: Query not suppressed for %##s, qtype %s, not A/AAAA type", q->qname.c, DNSTypeName(q->qtype));
return mDNSfalse; return mDNSfalse;
} }
// Private domains are exempted irrespective of what the DNSServer says // Private domains are exempted irrespective of what the DNSServer says
if (IsPrivateDomain(m, q)) if (IsPrivateDomain(m, q))
{ {
LogInfo("ShouldSuppressUnicastQuery: Query not suppressed for %##s, qtype %s, Private Domain", q->qname.c, DNSTypeName(q->qtype)); LogDebug("ShouldSuppressUnicastQuery: Query not suppressed for %##s, qtype %s, Private Domain", q->qname.c, DNSTypeName(q->qtype));
return mDNSfalse; return mDNSfalse;
} }
@ -11238,20 +11330,20 @@ mDNSlocal mDNSBool ShouldSuppressUnicastQuery(mDNS *const m, DNSQuestion *q, DNS
// Check if the DNS Configuration allows A/AAAA queries to be sent // Check if the DNS Configuration allows A/AAAA queries to be sent
if ((q->qtype == kDNSType_A) && (d->req_A)) if ((q->qtype == kDNSType_A) && (d->req_A))
{ {
LogInfo("ShouldSuppressUnicastQuery: Query not suppressed for %##s, qtype %s, DNSServer %##s %#a:%d allows A queries", q->qname.c, LogDebug("ShouldSuppressUnicastQuery: Query not suppressed for %##s, qtype %s, DNSServer %##s %#a:%d allows A queries", q->qname.c,
DNSTypeName(q->qtype), d->domain.c, &d->addr, mDNSVal16(d->port)); DNSTypeName(q->qtype), d->domain.c, &d->addr, mDNSVal16(d->port));
return mDNSfalse; return mDNSfalse;
} }
if ((q->qtype == kDNSType_AAAA) && (d->req_AAAA)) if ((q->qtype == kDNSType_AAAA) && (d->req_AAAA))
{ {
LogInfo("ShouldSuppressUnicastQuery: Query not suppressed for %##s, qtype %s, DNSServer %##s %#a:%d allows AAAA queries", q->qname.c, LogDebug("ShouldSuppressUnicastQuery: Query not suppressed for %##s, qtype %s, DNSServer %##s %#a:%d allows AAAA queries", q->qname.c,
DNSTypeName(q->qtype), d->domain.c, &d->addr, mDNSVal16(d->port)); DNSTypeName(q->qtype), d->domain.c, &d->addr, mDNSVal16(d->port));
return mDNSfalse; return mDNSfalse;
} }
#if USE_DNS64 #if USE_DNS64
if (DNS64IsQueryingARecord(q->dns64.state)) if (DNS64IsQueryingARecord(q->dns64.state))
{ {
LogInfo("ShouldSuppressUnicastQuery: DNS64 query not suppressed for %##s, qtype %s", q->qname.c, DNSTypeName(q->qtype)); LogDebug("ShouldSuppressUnicastQuery: DNS64 query not suppressed for %##s, qtype %s", q->qname.c, DNSTypeName(q->qtype));
return mDNSfalse; return mDNSfalse;
} }
#endif #endif
@ -11652,6 +11744,7 @@ mDNSlocal void InitDNSConfig(mDNS *const m, DNSQuestion *const question)
question->StopTime = (question->TimeoutQuestion) ? question->StopTime : 0; question->StopTime = (question->TimeoutQuestion) ? question->StopTime : 0;
#if AWD_METRICS #if AWD_METRICS
mDNSPlatformMemZero(&question->metrics, sizeof(question->metrics)); mDNSPlatformMemZero(&question->metrics, sizeof(question->metrics));
question->metrics.expiredAnswerState = (question->allowExpired != AllowExpired_None) ? ExpiredAnswer_Allowed : ExpiredAnswer_None;
#endif #endif
// Need not initialize the DNS Configuration for Local Only OR P2P Questions when timeout not specified // Need not initialize the DNS Configuration for Local Only OR P2P Questions when timeout not specified
@ -11672,7 +11765,7 @@ mDNSlocal void InitDNSConfig(mDNS *const m, DNSQuestion *const question)
} }
question->qDNSServer = GetServerForQuestion(m, question); question->qDNSServer = GetServerForQuestion(m, question);
LogInfo("InitDNSConfig: question %p %##s (%s) Timeout %d, DNS Server %#a:%d", LogDebug("InitDNSConfig: question %p %##s (%s) Timeout %d, DNS Server %#a:%d",
question, question->qname.c, DNSTypeName(question->qtype), timeout, question, question->qname.c, DNSTypeName(question->qtype), timeout,
question->qDNSServer ? &question->qDNSServer->addr : mDNSNULL, question->qDNSServer ? &question->qDNSServer->addr : mDNSNULL,
mDNSVal16(question->qDNSServer ? question->qDNSServer->port : zeroIPPort)); mDNSVal16(question->qDNSServer ? question->qDNSServer->port : zeroIPPort));
@ -12113,7 +12206,7 @@ mDNSexport mStatus mDNS_StopQuery_internal(mDNS *const m, DNSQuestion *const que
queryName = question->metrics.originalQName ? question->metrics.originalQName : &question->qname; queryName = question->metrics.originalQName ? question->metrics.originalQName : &question->qname;
isForCell = (question->qDNSServer && question->qDNSServer->cellIntf); isForCell = (question->qDNSServer && question->qDNSServer->cellIntf);
durationMs = ((m->timenow - question->metrics.firstQueryTime) * 1000) / mDNSPlatformOneSecond; durationMs = ((m->timenow - question->metrics.firstQueryTime) * 1000) / mDNSPlatformOneSecond;
MetricsUpdateDNSQueryStats(queryName, question->qtype, mDNSNULL, question->metrics.querySendCount, durationMs, isForCell); MetricsUpdateDNSQueryStats(queryName, question->qtype, mDNSNULL, question->metrics.querySendCount, question->metrics.expiredAnswerState, durationMs, isForCell);
} }
#endif #endif
// Take care to cut question from list *before* calling UpdateQuestionDuplicates // Take care to cut question from list *before* calling UpdateQuestionDuplicates
@ -12333,7 +12426,7 @@ mDNSexport mStatus mDNS_Reconfirm(mDNS *const m, CacheRecord *const cr)
mStatus status; mStatus status;
mDNS_Lock(m); mDNS_Lock(m);
status = mDNS_Reconfirm_internal(m, cr, kDefaultReconfirmTimeForNoAnswer); status = mDNS_Reconfirm_internal(m, cr, kDefaultReconfirmTimeForNoAnswer);
if (status == mStatus_NoError) ReconfirmAntecedents(m, cr->resrec.name, cr->resrec.namehash, 0); if (status == mStatus_NoError) ReconfirmAntecedents(m, cr->resrec.name, cr->resrec.namehash, cr->resrec.InterfaceID, 0);
mDNS_Unlock(m); mDNS_Unlock(m);
return(status); return(status);
} }
@ -12346,7 +12439,7 @@ mDNSexport mStatus mDNS_ReconfirmByValue(mDNS *const m, ResourceRecord *const rr
cr = FindIdenticalRecordInCache(m, rr); cr = FindIdenticalRecordInCache(m, rr);
debugf("mDNS_ReconfirmByValue: %p %s", cr, RRDisplayString(m, rr)); debugf("mDNS_ReconfirmByValue: %p %s", cr, RRDisplayString(m, rr));
if (cr) status = mDNS_Reconfirm_internal(m, cr, kDefaultReconfirmTimeForNoAnswer); if (cr) status = mDNS_Reconfirm_internal(m, cr, kDefaultReconfirmTimeForNoAnswer);
if (status == mStatus_NoError) ReconfirmAntecedents(m, cr->resrec.name, cr->resrec.namehash, 0); if (status == mStatus_NoError) ReconfirmAntecedents(m, cr->resrec.name, cr->resrec.namehash, cr->resrec.InterfaceID, 0);
mDNS_Unlock(m); mDNS_Unlock(m);
return(status); return(status);
} }
@ -13152,6 +13245,7 @@ mDNSexport void mDNS_DeregisterInterface(mDNS *const m, NetworkInterfaceInfo *se
} }
else else
{ {
rr->resrec.mortality = Mortality_Mortal;
mDNS_PurgeCacheResourceRecord(m, rr); mDNS_PurgeCacheResourceRecord(m, rr);
} }
} }
@ -13349,7 +13443,7 @@ mDNSexport mDNSu32 deriveD2DFlagsFromAuthRecType(AuthRecType authRecType)
// If the optional target host parameter is set, then the storage it points to must remain valid for the lifetime of the service registration // If the optional target host parameter is set, then the storage it points to must remain valid for the lifetime of the service registration
mDNSexport mStatus mDNS_RegisterService(mDNS *const m, ServiceRecordSet *sr, mDNSexport mStatus mDNS_RegisterService(mDNS *const m, ServiceRecordSet *sr,
const domainlabel *const name, const domainname *const type, const domainname *const domain, const domainlabel *const name, const domainname *const type, const domainname *const domain,
const domainname *const host, mDNSIPPort port, const mDNSu8 txtinfo[], mDNSu16 txtlen, const domainname *const host, mDNSIPPort port, RData *const txtrdata, const mDNSu8 txtinfo[], mDNSu16 txtlen,
AuthRecord *SubTypes, mDNSu32 NumSubTypes, AuthRecord *SubTypes, mDNSu32 NumSubTypes,
mDNSInterfaceID InterfaceID, mDNSServiceCallback Callback, void *Context, mDNSu32 flags) mDNSInterfaceID InterfaceID, mDNSServiceCallback Callback, void *Context, mDNSu32 flags)
{ {
@ -13386,7 +13480,7 @@ mDNSexport mStatus mDNS_RegisterService(mDNS *const m, ServiceRecordSet *sr,
hostTTL = kHostNameTTL; hostTTL = kHostNameTTL;
mDNS_SetupResourceRecord(&sr->RR_SRV, mDNSNULL, InterfaceID, kDNSType_SRV, hostTTL, recordType, artype, ServiceCallback, sr); mDNS_SetupResourceRecord(&sr->RR_SRV, mDNSNULL, InterfaceID, kDNSType_SRV, hostTTL, recordType, artype, ServiceCallback, sr);
mDNS_SetupResourceRecord(&sr->RR_TXT, mDNSNULL, InterfaceID, kDNSType_TXT, kStandardTTL, recordType, artype, ServiceCallback, sr); mDNS_SetupResourceRecord(&sr->RR_TXT, txtrdata, InterfaceID, kDNSType_TXT, kStandardTTL, recordType, artype, ServiceCallback, sr);
// If port number is zero, that means the client is really trying to do a RegisterNoSuchService // If port number is zero, that means the client is really trying to do a RegisterNoSuchService
if (mDNSIPPortIsZero(port)) if (mDNSIPPortIsZero(port))
@ -13596,7 +13690,9 @@ mDNSexport mStatus mDNS_RenameAndReregisterService(mDNS *const m, ServiceRecordS
else debugf("%##s service (domain %##s) renamed from \"%#s\" to \"%#s\"",type.c, domain.c, name1.c, newname->c); else debugf("%##s service (domain %##s) renamed from \"%#s\" to \"%#s\"",type.c, domain.c, name1.c, newname->c);
err = mDNS_RegisterService(m, sr, newname, &type, &domain, err = mDNS_RegisterService(m, sr, newname, &type, &domain,
host, sr->RR_SRV.resrec.rdata->u.srv.port, sr->RR_TXT.resrec.rdata->u.txt.c, sr->RR_TXT.resrec.rdlength, host, sr->RR_SRV.resrec.rdata->u.srv.port,
(sr->RR_TXT.resrec.rdata != &sr->RR_TXT.rdatastorage) ? sr->RR_TXT.resrec.rdata : mDNSNULL,
sr->RR_TXT.resrec.rdata->u.txt.c, sr->RR_TXT.resrec.rdlength,
sr->SubTypes, sr->NumSubTypes, sr->SubTypes, sr->NumSubTypes,
sr->RR_PTR.resrec.InterfaceID, sr->ServiceCallback, sr->ServiceContext, sr->flags); sr->RR_PTR.resrec.InterfaceID, sr->ServiceCallback, sr->ServiceContext, sr->flags);
@ -14235,6 +14331,7 @@ mDNSlocal void SleepProxyServerCallback(mDNS *const m, ServiceRecordSet *const s
mDNS_RegisterService(m, srs, mDNS_RegisterService(m, srs,
&name, &SleepProxyServiceType, &localdomain, &name, &SleepProxyServiceType, &localdomain,
mDNSNULL, m->SPSSocket->port, // Host, port mDNSNULL, m->SPSSocket->port, // Host, port
mDNSNULL,
(mDNSu8 *)"", 1, // TXT data, length (mDNSu8 *)"", 1, // TXT data, length
mDNSNULL, 0, // Subtypes (none) mDNSNULL, 0, // Subtypes (none)
mDNSInterface_Any, // Interface ID mDNSInterface_Any, // Interface ID
@ -14953,6 +15050,7 @@ mDNSexport mStatus uDNS_SetupDNSConfig(mDNS *const m)
{ {
LogInfo("uDNS_SetupDNSConfig: Purging Resourcerecord %s, New DNS server %#a , Old DNS server %#a", CRDisplayString(m, cr), LogInfo("uDNS_SetupDNSConfig: Purging Resourcerecord %s, New DNS server %#a , Old DNS server %#a", CRDisplayString(m, cr),
&ptr->addr, (cr->resrec.rDNSServer != mDNSNULL ? &cr->resrec.rDNSServer->addr : mDNSNULL)); &ptr->addr, (cr->resrec.rDNSServer != mDNSNULL ? &cr->resrec.rDNSServer->addr : mDNSNULL));
cr->resrec.mortality = Mortality_Mortal;
mDNS_PurgeCacheResourceRecord(m, cr); mDNS_PurgeCacheResourceRecord(m, cr);
} }
else else
@ -15021,6 +15119,7 @@ mDNSexport mStatus uDNS_SetupDNSConfig(mDNS *const m)
cr->resrec.rDNSServer = mDNSNULL; cr->resrec.rDNSServer = mDNSNULL;
} }
cr->resrec.mortality = Mortality_Mortal;
PurgeOrReconfirmCacheRecord(m, cr, ptr, mDNStrue); PurgeOrReconfirmCacheRecord(m, cr, ptr, mDNStrue);
} }
} }

6
mDNSResponder/mDNSCore/mDNSDebug.h
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2002-2015 Apple Inc. All rights reserved. * Copyright (c) 2002-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -99,12 +99,14 @@ extern "C" {
#define LogOperation(... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_OPERATION, __VA_ARGS__);} while (0) #define LogOperation(... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_OPERATION, __VA_ARGS__);} while (0)
#define LogSPS(... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_SPS, __VA_ARGS__);} while (0) #define LogSPS(... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_SPS, __VA_ARGS__);} while (0)
#define LogInfo(... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_INFO, __VA_ARGS__);} while (0) #define LogInfo(... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_INFO, __VA_ARGS__);} while (0)
#define LogDebug(... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_DEBUG, __VA_ARGS__);} while (0)
#elif (MDNS_GNU_VA_ARGS) #elif (MDNS_GNU_VA_ARGS)
#define debug_noop( ARGS... ) ((void)0) #define debug_noop( ARGS... ) ((void)0)
#define LogMsg( ARGS... ) LogMsgWithLevel(MDNS_LOG_MSG, ARGS) #define LogMsg( ARGS... ) LogMsgWithLevel(MDNS_LOG_MSG, ARGS)
#define LogOperation( ARGS... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_OPERATION, ARGS);} while (0) #define LogOperation( ARGS... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_OPERATION, ARGS);} while (0)
#define LogSPS( ARGS... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_SPS, ARGS);} while (0) #define LogSPS( ARGS... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_SPS, ARGS);} while (0)
#define LogInfo( ARGS... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_INFO, ARGS);} while (0) #define LogInfo( ARGS... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_INFO, ARGS);} while (0)
#define LogDebug( ARGS... ) do { if (mDNS_LoggingEnabled) LogMsgWithLevel(MDNS_LOG_DEBUG, ARGS);} while (0)
#else #else
#error Unknown variadic macros #error Unknown variadic macros
#endif #endif
@ -116,10 +118,12 @@ extern "C" {
#define LogOperation (mDNS_LoggingEnabled == 0) ? ((void)0) : LogOperation_ #define LogOperation (mDNS_LoggingEnabled == 0) ? ((void)0) : LogOperation_
#define LogSPS (mDNS_LoggingEnabled == 0) ? ((void)0) : LogSPS_ #define LogSPS (mDNS_LoggingEnabled == 0) ? ((void)0) : LogSPS_
#define LogInfo (mDNS_LoggingEnabled == 0) ? ((void)0) : LogInfo_ #define LogInfo (mDNS_LoggingEnabled == 0) ? ((void)0) : LogInfo_
#define LogDebug (mDNS_LoggingEnabled == 0) ? ((void)0) : LogDebug_
extern void LogMsg_(const char *format, ...) IS_A_PRINTF_STYLE_FUNCTION(1,2); extern void LogMsg_(const char *format, ...) IS_A_PRINTF_STYLE_FUNCTION(1,2);
extern void LogOperation_(const char *format, ...) IS_A_PRINTF_STYLE_FUNCTION(1,2); extern void LogOperation_(const char *format, ...) IS_A_PRINTF_STYLE_FUNCTION(1,2);
extern void LogSPS_(const char *format, ...) IS_A_PRINTF_STYLE_FUNCTION(1,2); extern void LogSPS_(const char *format, ...) IS_A_PRINTF_STYLE_FUNCTION(1,2);
extern void LogInfo_(const char *format, ...) IS_A_PRINTF_STYLE_FUNCTION(1,2); extern void LogInfo_(const char *format, ...) IS_A_PRINTF_STYLE_FUNCTION(1,2);
extern void LogDebug_(const char *format, ...) IS_A_PRINTF_STYLE_FUNCTION(1,2);
#endif #endif
#if MDNS_DEBUGMSGS #if MDNS_DEBUGMSGS

58
mDNSResponder/mDNSCore/mDNSEmbeddedAPI.h
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2002-2017 Apple Inc. All rights reserved. * Copyright (c) 2002-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -101,6 +101,10 @@ extern "C" {
#define MaximumRDSize 264 #define MaximumRDSize 264
#endif #endif
#if !defined(MDNSRESPONDER_BTMM_SUPPORT)
#define MDNSRESPONDER_BTMM_SUPPORT 0
#endif
// *************************************************************************** // ***************************************************************************
// Function scope indicators // Function scope indicators
@ -1335,6 +1339,13 @@ typedef struct McastResolver
mDNSu32 timeout; // timeout value for questions mDNSu32 timeout; // timeout value for questions
} McastResolver; } McastResolver;
enum {
Mortality_Mortal = 0, // This cache record can expire and get purged
Mortality_Immortal = 1, // Allow this record to remain in the cache indefinitely
Mortality_Ghost = 2 // An immortal record that has expired and can linger in the cache
};
typedef mDNSu8 MortalityState;
// scoped values for DNSServer matching // scoped values for DNSServer matching
enum enum
{ {
@ -1386,6 +1397,7 @@ typedef struct
struct ResourceRecord_struct struct ResourceRecord_struct
{ {
mDNSu8 RecordType; // See kDNSRecordTypes enum. mDNSu8 RecordType; // See kDNSRecordTypes enum.
MortalityState mortality; // Mortality of this resource record (See MortalityState enum)
mDNSu16 rrtype; // See DNS_TypeValues enum. mDNSu16 rrtype; // See DNS_TypeValues enum.
mDNSu16 rrclass; // See DNS_ClassValues enum. mDNSu16 rrclass; // See DNS_ClassValues enum.
mDNSu32 rroriginalttl; // In seconds mDNSu32 rroriginalttl; // In seconds
@ -1399,7 +1411,6 @@ struct ResourceRecord_struct
// ReconfirmAntecedents(), etc., use rdatahash as a pre-flight check to see // ReconfirmAntecedents(), etc., use rdatahash as a pre-flight check to see
// whether it's worth doing a full SameDomainName() call. If the rdatahash // whether it's worth doing a full SameDomainName() call. If the rdatahash
// is not a correct case-insensitive name hash, they'll get false negatives. // is not a correct case-insensitive name hash, they'll get false negatives.
// Grouping pointers together at the end of the structure improves the memory layout efficiency // Grouping pointers together at the end of the structure improves the memory layout efficiency
mDNSInterfaceID InterfaceID; // Set if this RR is specific to one interface mDNSInterfaceID InterfaceID; // Set if this RR is specific to one interface
// For records received off the wire, InterfaceID is *always* set to the receiving interface // For records received off the wire, InterfaceID is *always* set to the receiving interface
@ -1638,7 +1649,7 @@ struct CacheRecord_struct
mDNSs32 TimeRcvd; // In platform time units mDNSs32 TimeRcvd; // In platform time units
mDNSs32 DelayDelivery; // Set if we want to defer delivery of this answer to local clients mDNSs32 DelayDelivery; // Set if we want to defer delivery of this answer to local clients
mDNSs32 NextRequiredQuery; // In platform time units mDNSs32 NextRequiredQuery; // In platform time units
mDNSs32 LastUsed; // In platform time units // Extra four bytes here (on 64bit)
DNSQuestion *CRActiveQuestion; // Points to an active question referencing this answer. Can never point to a NewQuestion. DNSQuestion *CRActiveQuestion; // Points to an active question referencing this answer. Can never point to a NewQuestion.
mDNSs32 LastUnansweredTime; // In platform time units; last time we incremented UnansweredQueries mDNSs32 LastUnansweredTime; // In platform time units; last time we incremented UnansweredQueries
mDNSu8 UnansweredQueries; // Number of times we've issued a query for this record without getting an answer mDNSu8 UnansweredQueries; // Number of times we've issued a query for this record without getting an answer
@ -1812,7 +1823,12 @@ typedef enum {
DNSPUSH_ESTABLISHED = 4 DNSPUSH_ESTABLISHED = 4
} DNSPush_State; } DNSPush_State;
enum {
AllowExpired_None = 0, // Don't allow expired answers or mark answers immortal (behave normally)
AllowExpired_MakeAnswersImmortal = 1, // Any answers to this question get marked as immortal
AllowExpired_AllowExpiredAnswers = 2 // Allow already expired answers from the cache
};
typedef mDNSu8 AllowExpiredState;
#define HMAC_LEN 64 #define HMAC_LEN 64
#define HMAC_IPAD 0x36 #define HMAC_IPAD 0x36
@ -1899,12 +1915,25 @@ typedef enum { DNSSECValNotRequired = 0, DNSSECValRequired, DNSSECValInProgress,
#define AWD_METRICS (USE_AWD && TARGET_OS_IOS) #define AWD_METRICS (USE_AWD && TARGET_OS_IOS)
#if AWD_METRICS #if AWD_METRICS
enum
{
ExpiredAnswer_None = 0, // No expired answers used
ExpiredAnswer_Allowed = 1, // An expired answer is allowed by this request
ExpiredAnswer_AnsweredWithExpired = 2, // Question was answered with an expired answer
ExpiredAnswer_ExpiredAnswerChanged = 3, // Expired answer changed on refresh
ExpiredAnswer_EnumCount
};
typedef mDNSu8 ExpiredAnswerMetric;
typedef struct typedef struct
{ {
domainname * originalQName; // Name of original A/AAAA record if this question is for a CNAME record. domainname * originalQName; // Name of original A/AAAA record if this question is for a CNAME record.
mDNSu32 querySendCount; // Number of queries that have been sent to DNS servers so far. mDNSu32 querySendCount; // Number of queries that have been sent to DNS servers so far.
mDNSs32 firstQueryTime; // The time when the first query was sent to a DNS server. mDNSs32 firstQueryTime; // The time when the first query was sent to a DNS server.
mDNSBool answered; // Has this question been answered? mDNSBool answered; // Has this question been answered?
ExpiredAnswerMetric expiredAnswerState; // Expired answer state (see ExpiredAnswerMetric above)
} uDNSMetrics; } uDNSMetrics;
#endif #endif
@ -1977,6 +2006,7 @@ struct DNSQuestion_struct
mDNSu16 noServerResponse; // At least one server did not respond. mDNSu16 noServerResponse; // At least one server did not respond.
mDNSu16 triedAllServersOnce; // Tried all DNS servers once mDNSu16 triedAllServersOnce; // Tried all DNS servers once
mDNSu8 unansweredQueries; // The number of unanswered queries to this server mDNSu8 unansweredQueries; // The number of unanswered queries to this server
AllowExpiredState allowExpired; // Allow expired answers state (see enum AllowExpired_None, etc. above)
ZoneData *nta; // Used for getting zone data for private or LLQ query ZoneData *nta; // Used for getting zone data for private or LLQ query
mDNSAddr servAddr; // Address and port learned from _dns-llq, _dns-llq-tls or _dns-query-tls SRV query mDNSAddr servAddr; // Address and port learned from _dns-llq, _dns-llq-tls or _dns-query-tls SRV query
@ -2016,6 +2046,7 @@ struct DNSQuestion_struct
mDNSIPPort TargetPort; // Must be set if Target is set mDNSIPPort TargetPort; // Must be set if Target is set
mDNSOpaque16 TargetQID; // Must be set if Target is set mDNSOpaque16 TargetQID; // Must be set if Target is set
domainname qname; domainname qname;
domainname firstExpiredQname; // first expired qname in request chain
mDNSu16 qtype; mDNSu16 qtype;
mDNSu16 qclass; mDNSu16 qclass;
mDNSBool LongLived; // Set by client for calls to mDNS_StartQuery to indicate LLQs to unicast layer. mDNSBool LongLived; // Set by client for calls to mDNS_StartQuery to indicate LLQs to unicast layer.
@ -2778,7 +2809,7 @@ extern void mDNS_SetupResourceRecord(AuthRecord *rr, RData *RDataStorage, mDN
extern mDNSu32 deriveD2DFlagsFromAuthRecType(AuthRecType authRecType); extern mDNSu32 deriveD2DFlagsFromAuthRecType(AuthRecType authRecType);
extern mStatus mDNS_RegisterService (mDNS *const m, ServiceRecordSet *sr, extern mStatus mDNS_RegisterService (mDNS *const m, ServiceRecordSet *sr,
const domainlabel *const name, const domainname *const type, const domainname *const domain, const domainlabel *const name, const domainname *const type, const domainname *const domain,
const domainname *const host, mDNSIPPort port, const mDNSu8 txtinfo[], mDNSu16 txtlen, const domainname *const host, mDNSIPPort port, RData *txtrdata, const mDNSu8 txtinfo[], mDNSu16 txtlen,
AuthRecord *SubTypes, mDNSu32 NumSubTypes, AuthRecord *SubTypes, mDNSu32 NumSubTypes,
mDNSInterfaceID InterfaceID, mDNSServiceCallback Callback, void *Context, mDNSu32 flags); mDNSInterfaceID InterfaceID, mDNSServiceCallback Callback, void *Context, mDNSu32 flags);
extern mStatus mDNS_AddRecordToService(mDNS *const m, ServiceRecordSet *sr, ExtraResourceRecord *extra, RData *rdata, mDNSu32 ttl, mDNSu32 flags); extern mStatus mDNS_AddRecordToService(mDNS *const m, ServiceRecordSet *sr, ExtraResourceRecord *extra, RData *rdata, mDNSu32 ttl, mDNSu32 flags);
@ -2939,6 +2970,7 @@ extern char *GetRRDisplayString_rdb(const ResourceRecord *const rr, const RDataB
#define RRDisplayString(m, rr) GetRRDisplayString_rdb(rr, &(rr)->rdata->u, (m)->MsgBuffer) #define RRDisplayString(m, rr) GetRRDisplayString_rdb(rr, &(rr)->rdata->u, (m)->MsgBuffer)
#define ARDisplayString(m, rr) GetRRDisplayString_rdb(&(rr)->resrec, &(rr)->resrec.rdata->u, (m)->MsgBuffer) #define ARDisplayString(m, rr) GetRRDisplayString_rdb(&(rr)->resrec, &(rr)->resrec.rdata->u, (m)->MsgBuffer)
#define CRDisplayString(m, rr) GetRRDisplayString_rdb(&(rr)->resrec, &(rr)->resrec.rdata->u, (m)->MsgBuffer) #define CRDisplayString(m, rr) GetRRDisplayString_rdb(&(rr)->resrec, &(rr)->resrec.rdata->u, (m)->MsgBuffer)
#define MortalityDisplayString(M) (M == Mortality_Mortal ? "mortal" : (M == Mortality_Immortal ? "immortal" : "ghost"))
extern mDNSBool mDNSSameAddress(const mDNSAddr *ip1, const mDNSAddr *ip2); extern mDNSBool mDNSSameAddress(const mDNSAddr *ip1, const mDNSAddr *ip2);
extern void IncrementLabelSuffix(domainlabel *name, mDNSBool RichText); extern void IncrementLabelSuffix(domainlabel *name, mDNSBool RichText);
extern mDNSBool mDNSv4AddrIsRFC1918(const mDNSv4Addr * const addr); // returns true for RFC1918 private addresses extern mDNSBool mDNSv4AddrIsRFC1918(const mDNSv4Addr * const addr); // returns true for RFC1918 private addresses
@ -3601,17 +3633,17 @@ struct CompileTimeAssertionChecks_mDNS
char sizecheck_AuthRecord [(sizeof(AuthRecord) <= 1208) ? 1 : -1]; char sizecheck_AuthRecord [(sizeof(AuthRecord) <= 1208) ? 1 : -1];
char sizecheck_CacheRecord [(sizeof(CacheRecord) <= 232) ? 1 : -1]; char sizecheck_CacheRecord [(sizeof(CacheRecord) <= 232) ? 1 : -1];
char sizecheck_CacheGroup [(sizeof(CacheGroup) <= 232) ? 1 : -1]; char sizecheck_CacheGroup [(sizeof(CacheGroup) <= 232) ? 1 : -1];
char sizecheck_DNSQuestion [(sizeof(DNSQuestion) <= 912) ? 1 : -1]; char sizecheck_DNSQuestion [(sizeof(DNSQuestion) <= 1168) ? 1 : -1];
char sizecheck_ZoneData [(sizeof(ZoneData) <= 1744) ? 1 : -1]; char sizecheck_ZoneData [(sizeof(ZoneData) <= 2000) ? 1 : -1];
char sizecheck_NATTraversalInfo [(sizeof(NATTraversalInfo) <= 200) ? 1 : -1]; char sizecheck_NATTraversalInfo [(sizeof(NATTraversalInfo) <= 200) ? 1 : -1];
char sizecheck_HostnameInfo [(sizeof(HostnameInfo) <= 3050) ? 1 : -1]; char sizecheck_HostnameInfo [(sizeof(HostnameInfo) <= 3050) ? 1 : -1];
char sizecheck_DNSServer [(sizeof(DNSServer) <= 330) ? 1 : -1]; char sizecheck_DNSServer [(sizeof(DNSServer) <= 330) ? 1 : -1];
char sizecheck_NetworkInterfaceInfo[(sizeof(NetworkInterfaceInfo) <= 7376) ? 1 : -1]; char sizecheck_NetworkInterfaceInfo[(sizeof(NetworkInterfaceInfo) <= 8400) ? 1 : -1];
char sizecheck_ServiceRecordSet [(sizeof(ServiceRecordSet) <= 5540) ? 1 : -1]; char sizecheck_ServiceRecordSet [(sizeof(ServiceRecordSet) <= 5540) ? 1 : -1];
char sizecheck_DomainAuthInfo [(sizeof(DomainAuthInfo) <= 7888) ? 1 : -1]; char sizecheck_DomainAuthInfo [(sizeof(DomainAuthInfo) <= 7888) ? 1 : -1];
#if APPLE_OSX_mDNSResponder #if APPLE_OSX_mDNSResponder
char sizecheck_ClientTunnel [(sizeof(ClientTunnel) <= 1256) ? 1 : -1]; char sizecheck_ClientTunnel [(sizeof(ClientTunnel) <= 1512) ? 1 : -1];
#endif #endif
}; };

2
mDNSResponder/mDNSCore/uDNS.c
View File

@ -5807,7 +5807,7 @@ struct CompileTimeAssertionChecks_uDNS
// other overly-large structures instead of having a pointer to them, can inadvertently // other overly-large structures instead of having a pointer to them, can inadvertently
// cause structure sizes (and therefore memory usage) to balloon unreasonably. // cause structure sizes (and therefore memory usage) to balloon unreasonably.
char sizecheck_tcpInfo_t [(sizeof(tcpInfo_t) <= 9056) ? 1 : -1]; char sizecheck_tcpInfo_t [(sizeof(tcpInfo_t) <= 9056) ? 1 : -1];
char sizecheck_SearchListElem[(sizeof(SearchListElem) <= 5000) ? 1 : -1]; char sizecheck_SearchListElem[(sizeof(SearchListElem) <= 6136) ? 1 : -1];
}; };
#if COMPILER_LIKES_PRAGMA_MARK #if COMPILER_LIKES_PRAGMA_MARK

51
mDNSResponder/mDNSMacOSX/D2D.c
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2002-2016 Apple Inc. All rights reserved. * Copyright (c) 2002-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -97,7 +97,6 @@ static mDNSu8 *const compression_limit = (mDNSu8 *) &compression_base_msg + size
static mDNSu8 *const compression_lhs = (mDNSu8 *const) compression_base_msg.data + 27; static mDNSu8 *const compression_lhs = (mDNSu8 *const) compression_base_msg.data + 27;
mDNSlocal void FreeD2DARElemCallback(mDNS *const m, AuthRecord *const rr, mStatus result); mDNSlocal void FreeD2DARElemCallback(mDNS *const m, AuthRecord *const rr, mStatus result);
mDNSlocal void PrintHex(mDNSu8 *data, mDNSu16 len);
typedef struct D2DRecordListElem typedef struct D2DRecordListElem
{ {
@ -167,42 +166,13 @@ mDNSlocal mDNSu8 * DNSNameCompressionBuildRHS(mDNSu8 *start, const ResourceRecor
return putRData(&compression_base_msg, start, compression_limit, resourceRecord); return putRData(&compression_base_msg, start, compression_limit, resourceRecord);
} }
#define PRINT_DEBUG_BYTES_LIMIT 64 // set limit on number of record bytes printed for debugging
mDNSlocal void PrintHex(mDNSu8 *data, mDNSu16 len)
{
mDNSu8 *end;
char buffer[49] = {0};
char *bufend = buffer + sizeof(buffer);
if (len > PRINT_DEBUG_BYTES_LIMIT)
{
LogInfo(" (limiting debug output to %d bytes)", PRINT_DEBUG_BYTES_LIMIT);
len = PRINT_DEBUG_BYTES_LIMIT;
}
end = data + len;
while(data < end)
{
char *ptr = buffer;
for(; data < end && ptr < bufend-1; ptr+=3,data++)
mDNS_snprintf(ptr, bufend - ptr, "%02X ", *data);
LogInfo(" %s", buffer);
}
}
mDNSlocal void PrintHelper(const char *const tag, mDNSu8 *lhs, mDNSu16 lhs_len, mDNSu8 *rhs, mDNSu16 rhs_len) mDNSlocal void PrintHelper(const char *const tag, mDNSu8 *lhs, mDNSu16 lhs_len, mDNSu8 *rhs, mDNSu16 rhs_len)
{ {
if (!mDNS_LoggingEnabled) return; if (mDNS_LoggingEnabled)
{
LogInfo("%s:", tag); LogDebug("%s: LHS: (%d bytes) %.*H", tag, lhs_len, lhs_len, lhs);
LogInfo(" LHS: (%d bytes)", lhs_len); if (rhs) LogDebug("%s: RHS: (%d bytes) %.*H", tag, rhs_len, rhs_len, rhs);
PrintHex(lhs, lhs_len); }
if (!rhs) return;
LogInfo(" RHS: (%d bytes)", rhs_len);
PrintHex(rhs, rhs_len);
} }
mDNSlocal void FreeD2DARElemCallback(mDNS *const m, AuthRecord *const rr, mStatus result) mDNSlocal void FreeD2DARElemCallback(mDNS *const m, AuthRecord *const rr, mStatus result)
@ -333,9 +303,8 @@ mDNSlocal mStatus xD2DParse(const mDNSu8 * const lhs, const mDNSu16 lhs_len, con
if (mDNS_LoggingEnabled) if (mDNS_LoggingEnabled)
{ {
LogInfo("%s", __func__); const int len = (int)(compression_lhs - (mDNSu8*)&compression_base_msg);
LogInfo(" Static Bytes: (%d bytes)", compression_lhs - (mDNSu8*)&compression_base_msg); LogInfo("xD2DParse: Static Bytes: (%d bytes) %.*H", len, len, &compression_base_msg);
PrintHex((mDNSu8*)&compression_base_msg, compression_lhs - (mDNSu8*)&compression_base_msg);
} }
mDNSu8 *ptr = compression_lhs; // pointer to the end of our fake packet mDNSu8 *ptr = compression_lhs; // pointer to the end of our fake packet
@ -366,8 +335,8 @@ mDNSlocal mStatus xD2DParse(const mDNSu8 * const lhs, const mDNSu16 lhs_len, con
if (mDNS_LoggingEnabled) if (mDNS_LoggingEnabled)
{ {
LogInfo(" Our Bytes (%d bytes): ", ptr - compression_lhs); const int len = (int)(ptr - compression_lhs);
PrintHex(compression_lhs, ptr - compression_lhs); LogInfo("xD2DParse: Our Bytes (%d bytes): %.*H", len, len, compression_lhs);
} }
ptr = (mDNSu8 *) GetLargeResourceRecord(m, &compression_base_msg, compression_lhs, ptr, mDNSInterface_Any, kDNSRecordTypePacketAns, &m->rec); ptr = (mDNSu8 *) GetLargeResourceRecord(m, &compression_base_msg, compression_lhs, ptr, mDNSInterface_Any, kDNSRecordTypePacketAns, &m->rec);

8
mDNSResponder/mDNSMacOSX/DNS64.c
View File

@ -22,7 +22,13 @@
#include "DNS64.h" #include "DNS64.h"
#include <AssertMacros.h> #include <AssertMacros.h>
#include <network/nat64.h>
#if __has_include(<nw/private.h>)
#include <nw/private.h>
#else
#include <network/nat64.h>
#endif
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>

10
mDNSResponder/mDNSMacOSX/DNSServiceDiscovery.c
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2002-2012 Apple Inc. All rights reserved. * Copyright (c) 2002-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -15,14 +15,6 @@
* limitations under the License. * limitations under the License.
*/ */
// Suppress "warning: 'DNSServiceDiscoveryMachPort' is deprecated" messages -- we already know this code is building the deprecated API
// Since we compile with all warnings treated as errors, we have to turn off the warnings here or the project won't compile
#include <AvailabilityMacros.h>
#undef AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER_BUT_DEPRECATED
#define AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER_BUT_DEPRECATED
#undef AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER_BUT_DEPRECATED_IN_MAC_OS_X_VERSION_10_3
#define AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER_BUT_DEPRECATED_IN_MAC_OS_X_VERSION_10_3
#include "../mDNSMacOSX/DNSServiceDiscovery.h" #include "../mDNSMacOSX/DNSServiceDiscovery.h"
#include "DNSServiceDiscoveryDefines.h" #include "DNSServiceDiscoveryDefines.h"

15
mDNSResponder/mDNSMacOSX/DNSServiceDiscovery.h
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2002, 2004, 2006, 2011 Apple Inc. All rights reserved. * Copyright (c) 2002-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -31,8 +31,9 @@
#include <sys/cdefs.h> #include <sys/cdefs.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <os/availability.h>
#include <AvailabilityMacros.h> #define kDNSServiceDiscoveryDeprecatedMsg "This API was deprecated in Mac OS X 10.3 and replaced by the portable cross-platform /usr/include/dns_sd.h API"
__BEGIN_DECLS __BEGIN_DECLS
@ -90,7 +91,7 @@ typedef uint32_t DNSRecordReference;
call to the specified callout function. call to the specified callout function.
@param replyMsg The Mach message. @param replyMsg The Mach message.
*/ */
void DNSServiceDiscovery_handleReply(void *replyMsg); void DNSServiceDiscovery_handleReply(void *replyMsg) API_DEPRECATED(kDNSServiceDiscoveryDeprecatedMsg, macos(10.2, 10.3));
/***************************************************************************/ /***************************************************************************/
/* DNS Service Browser */ /* DNS Service Browser */
@ -125,7 +126,7 @@ dns_service_discovery_ref DNSServiceBrowserCreate
const char *domain, const char *domain,
DNSServiceBrowserReply callBack, DNSServiceBrowserReply callBack,
void *context void *context
) AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER_BUT_DEPRECATED_IN_MAC_OS_X_VERSION_10_3; ) API_DEPRECATED(kDNSServiceDiscoveryDeprecatedMsg, macos(10.2, 10.3));
/***************************************************************************/ /***************************************************************************/
/* Resolver requests */ /* Resolver requests */
@ -158,7 +159,7 @@ dns_service_discovery_ref DNSServiceResolverResolve
const char *domain, const char *domain,
DNSServiceResolverReply callBack, DNSServiceResolverReply callBack,
void *context void *context
) AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER_BUT_DEPRECATED_IN_MAC_OS_X_VERSION_10_3; ) API_DEPRECATED(kDNSServiceDiscoveryDeprecatedMsg, macos(10.2, 10.3));
/***************************************************************************/ /***************************************************************************/
/* Mach port accessor and deallocation */ /* Mach port accessor and deallocation */
@ -173,7 +174,7 @@ dns_service_discovery_ref DNSServiceResolverResolve
specified or some other error occurred which prevented the specified or some other error occurred which prevented the
resolution from being started. resolution from being started.
*/ */
mach_port_t DNSServiceDiscoveryMachPort(dns_service_discovery_ref dnsServiceDiscovery) AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER_BUT_DEPRECATED_IN_MAC_OS_X_VERSION_10_3; mach_port_t DNSServiceDiscoveryMachPort(dns_service_discovery_ref dnsServiceDiscovery) API_DEPRECATED(kDNSServiceDiscoveryDeprecatedMsg, macos(10.2, 10.3));
/*! /*!
@function DNSServiceDiscoveryDeallocate @function DNSServiceDiscoveryDeallocate
@ -181,7 +182,7 @@ mach_port_t DNSServiceDiscoveryMachPort(dns_service_discovery_ref dnsServiceDisc
@param dnsServiceDiscovery A dns_service_discovery_ref as returned from a creation or enumeration call @param dnsServiceDiscovery A dns_service_discovery_ref as returned from a creation or enumeration call
@result void @result void
*/ */
void DNSServiceDiscoveryDeallocate(dns_service_discovery_ref dnsServiceDiscovery) AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER_BUT_DEPRECATED_IN_MAC_OS_X_VERSION_10_3; void DNSServiceDiscoveryDeallocate(dns_service_discovery_ref dnsServiceDiscovery) API_DEPRECATED(kDNSServiceDiscoveryDeprecatedMsg, macos(10.2, 10.3));
__END_DECLS __END_DECLS

14
mDNSResponder/mDNSMacOSX/LoggingProfiles/AppleInternal/com.apple.mDNSResponder.plist Normal file
View File

@ -0,0 +1,14 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>DEFAULT-OPTIONS</key>
<dict>
<key>Level</key>
<dict>
<key>Persist</key>
<string>Info</string>
</dict>
</dict>
</dict>
</plist>

16
mDNSResponder/mDNSMacOSX/LoggingProfiles/com.apple.mDNSResponder.plist Normal file
View File

@ -0,0 +1,16 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>DEFAULT-OPTIONS</key>
<dict>
<key>Level</key>
<dict>
<key>Persist</key>
<string>Inherit</string>
<key>Enable</key>
<string>Inherit</string>
</dict>
</dict>
</dict>
</plist>

2
mDNSResponder/mDNSMacOSX/Metrics.h
View File

@ -26,7 +26,7 @@ extern "C" {
#if TARGET_OS_IOS #if TARGET_OS_IOS
mStatus MetricsInit(void); mStatus MetricsInit(void);
void MetricsUpdateDNSQueryStats(const domainname *inQueryName, mDNSu16 inType, const ResourceRecord *inRR, mDNSu32 inSendCount, mDNSu32 inLatencyMs, mDNSBool inForCell); void MetricsUpdateDNSQueryStats(const domainname *inQueryName, mDNSu16 inType, const ResourceRecord *inRR, mDNSu32 inSendCount, ExpiredAnswerMetric inExpiredAnswerState, mDNSu32 inLatencyMs, mDNSBool inForCell);
void MetricsUpdateDNSResolveStats(const domainname *inQueryName, const ResourceRecord *inRR, mDNSBool inForCell); void MetricsUpdateDNSResolveStats(const domainname *inQueryName, const ResourceRecord *inRR, mDNSBool inForCell);
void MetricsUpdateDNSQuerySize(mDNSu32 inSize); void MetricsUpdateDNSQuerySize(mDNSu32 inSize);
void MetricsUpdateDNSResponseSize(mDNSu32 inSize); void MetricsUpdateDNSResponseSize(mDNSu32 inSize);

29
mDNSResponder/mDNSMacOSX/Metrics.m
View File

@ -93,10 +93,11 @@ SOFT_LINK_CLASS(WirelessDiagnostics, AWDMDNSResponderDNSMessageSizeStats)
// Constants // Constants
//=========================================================================================================================== //===========================================================================================================================
#define kQueryStatsMaxQuerySendCount 10 #define kQueryStatsMaxQuerySendCount 10
#define kQueryStatsSendCountBinCount (kQueryStatsMaxQuerySendCount + 1) #define kQueryStatsSendCountBinCount (kQueryStatsMaxQuerySendCount + 1)
#define kQueryStatsLatencyBinCount 55 #define kQueryStatsLatencyBinCount 55
#define kResolveStatsMaxObjCount 2000 #define kQueryStatsExpiredAnswerStateCount (ExpiredAnswer_EnumCount)
#define kResolveStatsMaxObjCount 2000
//=========================================================================================================================== //===========================================================================================================================
// Data structures // Data structures
@ -152,6 +153,7 @@ typedef struct
uint16_t responseLatencyBins[kQueryStatsLatencyBinCount]; uint16_t responseLatencyBins[kQueryStatsLatencyBinCount];
uint16_t negAnsweredQuerySendCountBins[kQueryStatsSendCountBinCount]; uint16_t negAnsweredQuerySendCountBins[kQueryStatsSendCountBinCount];
uint16_t negResponseLatencyBins[kQueryStatsLatencyBinCount]; uint16_t negResponseLatencyBins[kQueryStatsLatencyBinCount];
uint16_t expiredAnswerStateBins[kQueryStatsExpiredAnswerStateCount];
} DNSHist; } DNSHist;
@ -159,6 +161,7 @@ check_compile_time(sizeof(DNSHist) <= 512);
check_compile_time(countof_field(DNSHist, unansweredQuerySendCountBins) == (kQueryStatsMaxQuerySendCount + 1)); check_compile_time(countof_field(DNSHist, unansweredQuerySendCountBins) == (kQueryStatsMaxQuerySendCount + 1));
check_compile_time(countof_field(DNSHist, answeredQuerySendCountBins) == (kQueryStatsMaxQuerySendCount + 1)); check_compile_time(countof_field(DNSHist, answeredQuerySendCountBins) == (kQueryStatsMaxQuerySendCount + 1));
check_compile_time(countof_field(DNSHist, negAnsweredQuerySendCountBins) == (kQueryStatsMaxQuerySendCount + 1)); check_compile_time(countof_field(DNSHist, negAnsweredQuerySendCountBins) == (kQueryStatsMaxQuerySendCount + 1));
check_compile_time(countof_field(DNSHist, expiredAnswerStateBins) == (kQueryStatsExpiredAnswerStateCount));
// Important: Do not modify kResponseLatencyMsLimits because the code used to generate AWD reports expects the response // Important: Do not modify kResponseLatencyMsLimits because the code used to generate AWD reports expects the response
// latency histogram bins to observe these time interval upper bounds. // latency histogram bins to observe these time interval upper bounds.
@ -344,7 +347,7 @@ check_compile_time(sizeof(DNSMessageSizeStats) <= 132);
mDNSlocal mStatus QueryStatsCreate(const char *inDomainStr, const char *inAltDomainStr, QueryNameTest_f inTest, mDNSBool inTerminal, QueryStats **outStats); mDNSlocal mStatus QueryStatsCreate(const char *inDomainStr, const char *inAltDomainStr, QueryNameTest_f inTest, mDNSBool inTerminal, QueryStats **outStats);
mDNSlocal void QueryStatsFree(QueryStats *inStats); mDNSlocal void QueryStatsFree(QueryStats *inStats);
mDNSlocal void QueryStatsFreeList(QueryStats *inList); mDNSlocal void QueryStatsFreeList(QueryStats *inList);
mDNSlocal mStatus QueryStatsUpdate(QueryStats *inStats, int inType, const ResourceRecord *inRR, mDNSu32 inQuerySendCount, mDNSu32 inLatencyMs, mDNSBool inForCell); mDNSlocal mStatus QueryStatsUpdate(QueryStats *inStats, int inType, const ResourceRecord *inRR, mDNSu32 inQuerySendCount, ExpiredAnswerMetric inExpiredAnswerState, mDNSu32 inLatencyMs, mDNSBool inForCell);
mDNSlocal const char * QueryStatsGetDomainString(const QueryStats *inStats); mDNSlocal const char * QueryStatsGetDomainString(const QueryStats *inStats);
mDNSlocal mDNSBool QueryStatsDomainTest(const QueryStats *inStats, const domainname *inQueryName); mDNSlocal mDNSBool QueryStatsDomainTest(const QueryStats *inStats, const domainname *inQueryName);
mDNSlocal mDNSBool QueryStatsHostnameTest(const QueryStats *inStats, const domainname *inQueryName); mDNSlocal mDNSBool QueryStatsHostnameTest(const QueryStats *inStats, const domainname *inQueryName);
@ -492,7 +495,7 @@ mStatus MetricsInit(void)
// MetricsUpdateDNSQueryStats // MetricsUpdateDNSQueryStats
//=========================================================================================================================== //===========================================================================================================================
mDNSexport void MetricsUpdateDNSQueryStats(const domainname *inQueryName, mDNSu16 inType, const ResourceRecord *inRR, mDNSu32 inSendCount, mDNSu32 inLatencyMs, mDNSBool inForCell) mDNSexport void MetricsUpdateDNSQueryStats(const domainname *inQueryName, mDNSu16 inType, const ResourceRecord *inRR, mDNSu32 inSendCount, ExpiredAnswerMetric inExpiredAnswerState, mDNSu32 inLatencyMs, mDNSBool inForCell)
{ {
QueryStats * stats; QueryStats * stats;
mDNSBool match; mDNSBool match;
@ -505,7 +508,7 @@ mDNSexport void MetricsUpdateDNSQueryStats(const domainname *inQueryName, mDNSu1
match = stats->test(stats, inQueryName); match = stats->test(stats, inQueryName);
if (match) if (match)
{ {
QueryStatsUpdate(stats, inType, inRR, inSendCount, inLatencyMs, inForCell); QueryStatsUpdate(stats, inType, inRR, inSendCount, inExpiredAnswerState, inLatencyMs, inForCell);
if (stats->terminal) break; if (stats->terminal) break;
} }
} }
@ -839,7 +842,7 @@ mDNSlocal void QueryStatsFreeList(QueryStats *inList)
// QueryStatsUpdate // QueryStatsUpdate
//=========================================================================================================================== //===========================================================================================================================
mDNSlocal mStatus QueryStatsUpdate(QueryStats *inStats, int inType, const ResourceRecord *inRR, mDNSu32 inQuerySendCount, mDNSu32 inLatencyMs, mDNSBool inForCell) mDNSlocal mStatus QueryStatsUpdate(QueryStats *inStats, int inType, const ResourceRecord *inRR, mDNSu32 inQuerySendCount, ExpiredAnswerMetric inExpiredAnswerState, mDNSu32 inLatencyMs, mDNSBool inForCell)
{ {
mStatus err; mStatus err;
DNSHistSet * set; DNSHistSet * set;
@ -892,6 +895,7 @@ mDNSlocal mStatus QueryStatsUpdate(QueryStats *inStats, int inType, const Resour
for (i = 0; (i < (int)countof(kResponseLatencyMsLimits)) && (inLatencyMs >= kResponseLatencyMsLimits[i]); ++i) {} for (i = 0; (i < (int)countof(kResponseLatencyMsLimits)) && (inLatencyMs >= kResponseLatencyMsLimits[i]); ++i) {}
increment_saturate(hist->unansweredQueryDurationBins[i], UINT16_MAX); increment_saturate(hist->unansweredQueryDurationBins[i], UINT16_MAX);
} }
increment_saturate(hist->expiredAnswerStateBins[Min(inExpiredAnswerState, (kQueryStatsExpiredAnswerStateCount-1))], UINT16_MAX);
err = mStatus_NoError; err = mStatus_NoError;
exit: exit:
@ -2061,6 +2065,7 @@ mDNSlocal mStatus CreateAWDDNSDomainStats(DNSHist *inHist, const char *inDomain,
size_t binCount; size_t binCount;
uint32_t sendCountBins[kQueryStatsSendCountBinCount]; uint32_t sendCountBins[kQueryStatsSendCountBinCount];
uint32_t latencyBins[kQueryStatsLatencyBinCount]; uint32_t latencyBins[kQueryStatsLatencyBinCount];
uint32_t expiredAnswerBins[kQueryStatsExpiredAnswerStateCount];
awdStats = [[AWDDNSDomainStatsSoft alloc] init]; awdStats = [[AWDDNSDomainStatsSoft alloc] init];
require_action_quiet(awdStats, exit, err = mStatus_UnknownErr); require_action_quiet(awdStats, exit, err = mStatus_UnknownErr);
@ -2108,6 +2113,11 @@ mDNSlocal mStatus CreateAWDDNSDomainStats(DNSHist *inHist, const char *inDomain,
[awdStats setUnansweredQueryDurationMs:latencyBins count:(NSUInteger)binCount]; [awdStats setUnansweredQueryDurationMs:latencyBins count:(NSUInteger)binCount];
} }
// Expired answers states
binCount = CopyHistogramBins(expiredAnswerBins, inHist->expiredAnswerStateBins, kQueryStatsExpiredAnswerStateCount);
[awdStats setExpiredAnswerStates:expiredAnswerBins count:(NSUInteger)binCount];
*outStats = awdStats; *outStats = awdStats;
awdStats = nil; awdStats = nil;
err = mStatus_NoError; err = mStatus_NoError;
@ -2166,6 +2176,9 @@ mDNSlocal void LogDNSHist(const DNSHist *inHist, const char *inDomain, mDNSBool
LogMsgNoIdent("Answered questions %4u", totalAnswered); LogMsgNoIdent("Answered questions %4u", totalAnswered);
LogMsgNoIdent("Negatively answered questions %4u", totalNegAnswered); LogMsgNoIdent("Negatively answered questions %4u", totalNegAnswered);
LogMsgNoIdent("Unanswered questions %4u", totalUnanswered); LogMsgNoIdent("Unanswered questions %4u", totalUnanswered);
LogMsgNoIdent("Expired - no cached answer %4u", inHist->expiredAnswerStateBins[ExpiredAnswer_Allowed]);
LogMsgNoIdent("Expired - answered from cache %4u", inHist->expiredAnswerStateBins[ExpiredAnswer_AnsweredWithExpired]);
LogMsgNoIdent("Expired - cache changed %4u", inHist->expiredAnswerStateBins[ExpiredAnswer_ExpiredAnswerChanged]);
LogMsgNoIdent("-- Query send counts ---------"); LogMsgNoIdent("-- Query send counts ---------");
LogDNSHistSendCounts(inHist->answeredQuerySendCountBins); LogDNSHistSendCounts(inHist->answeredQuerySendCountBins);
LogMsgNoIdent("-- Query send counts (NAQs) --"); LogMsgNoIdent("-- Query send counts (NAQs) --");

19
mDNSResponder/mDNSMacOSX/Private/com.apple.mDNSResponder.plist
View File

@ -1,19 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>DEFAULT-OPTIONS</key>
<dict>
<key>Default-Privacy-Setting</key>
<string>Public</string>
<key>Level</key>
<dict>
<key>Persist</key>
<string>Inherit</string>
<key>Enable</key>
<string>Inherit</string>
</dict>
</dict>
</dict>
</plist>

380
mDNSResponder/mDNSMacOSX/Scripts/bonjour-mcast-diagnose Executable file
View File

@ -0,0 +1,380 @@
#! /bin/bash
#
# Copyright (c) 2017-2018 Apple Inc. All rights reserved.
#
# This script is currently for Apple Internal use only.
#
version=1.4
script=${BASH_SOURCE[0]}
dnssdutil=${dnssdutil:-dnssdutil}
#============================================================================================================================
# PrintUsage
#============================================================================================================================
PrintUsage()
{
echo ""
echo "Usage: $( basename "${script}" ) [options]"
echo ""
echo "Options:"
echo " -V Display version of this script and exit."
echo ""
}
#============================================================================================================================
# LogOut
#============================================================================================================================
LogOut()
{
echo "$( date '+%Y-%m-%d %H:%M:%S%z' ): $*"
}
#============================================================================================================================
# LogMsg
#============================================================================================================================
LogMsg()
{
echo "$*"
if [ -d "${workPath}" ]; then
LogOut "$*" >> "${workPath}/log.txt"
fi
}
#============================================================================================================================
# ErrQuit
#============================================================================================================================
ErrQuit()
{
echo "error: $*"
exit 1
}
#============================================================================================================================
# SignalHandler
#============================================================================================================================
SignalHandler()
{
LogMsg "Exiting due to signal."
trap '' SIGINT SIGTERM
pkill -TERM -P $$
wait
exit 2
}
#============================================================================================================================
# ExitHandler
#============================================================================================================================
ExitHandler()
{
if [ -d "${tempPath}" ]; then
rm -fr "${tempPath}"
fi
}
#============================================================================================================================
# RunNetStat
#============================================================================================================================
RunNetStat()
{
LogMsg "Running netstat -g -n -s"
netstat -g -n -s &> "${workPath}/netstat-g-n-s.txt"
}
#============================================================================================================================
# StartPacketCapture
#============================================================================================================================
StartPacketCapture()
{
LogMsg "Starting tcpdump."
tcpdump -n -w "${workPath}/tcpdump.pcapng" &> "${workPath}/tcpdump.txt" &
tcpdumpPID=$!
}
#============================================================================================================================
# SaveExistingPacketCaptures
#============================================================================================================================
SaveExistingPacketCaptures()
{
LogMsg "Saving existing mDNS packet captures."
mkdir "${workPath}/pcaps"
for file in /tmp/mdns-tcpdump.pcapng*; do
[ -e "${file}" ] || continue
baseName=$( sed -E 's/^mdns-tcpdump.pcapng([0-9]+)$/mdns-tcpdump-\1.pcapng/' <<< "$( basename ${file} )" )
gzip < ${file} > "${workPath}/pcaps/${baseName}.gz"
done
}
#============================================================================================================================
# StopPacketCapture
#============================================================================================================================
StopPacketCapture()
{
LogMsg "Stopping tcpdump."
kill -TERM ${tcpdumpPID}
}
#============================================================================================================================
# RunInterfaceMulticastTests
#============================================================================================================================
RunInterfaceMulticastTests()
{
local ifname="$1"
local allHostsV4=224.0.0.1
local allHostsV6=ff02::1
local mDNSV4=224.0.0.251
local mDNSV6=ff02::fb
local serviceList=( $( "${dnssdutil}" queryrecord -i "${ifname}" -A -t ptr -n _services._dns-sd._udp.local -l 6 | sed -E -n 's/.*(_.*_(tcp|udp)\.local\.)$/\1/p' | sort -u ) )
local log="${workPath}/mcast-test-log-${ifname}.txt"
LogOut "List of services: ${serviceList[*]}" >> "${log}"
# Ping All Hosts IPv4 multicast address.
local routeOutput=$( route -n get -ifscope ${ifname} "${allHostsV4}" 2> /dev/null )
if [ -n "${routeOutput}" ]; then
LogOut "Pinging "${allHostsV4}" on interface ${ifname}." >> "${log}"
ping -t 5 -b ${ifname} "${allHostsV4}" &> "${workPath}/ping-all-hosts-${ifname}.txt"
else
LogOut "No route to "${allHostsV4}" on interface ${ifname}." >> "${log}"
fi
# Ping mDNS IPv4 multicast address.
routeOutput=$( route -n get -ifscope ${ifname} "${mDNSV4}" 2> /dev/null )
if [ -n "${routeOutput}" ]; then
LogOut "Pinging "${mDNSV4}" on interface ${ifname}." >> "${log}"
ping -t 5 -b ${ifname} "${mDNSV4}" &> "${workPath}/ping-mDNS-${ifname}.txt"
else
LogOut "No route to "${mDNSV4}" on interface ${ifname}." >> "${log}"
fi
# Ping All Hosts IPv6 multicast address.
routeOutput=$( route -n get -ifscope ${ifname} -inet6 "${allHostsV6}" 2> /dev/null )
if [ -n "${routeOutput}" ]; then
LogOut "Pinging "${allHostsV6}" on interface ${ifname}." >> "${log}"
ping6 -c 6 -I ${ifname} "${allHostsV6}" &> "${workPath}/ping6-all-hosts-${ifname}.txt"
else
LogOut "No route to "${allHostsV6}" on interface ${ifname}." >> "${log}"
fi
# Ping mDNS IPv6 multicast address.
routeOutput=$( route -n get -ifscope ${ifname} -inet6 "${mDNSV6}" 2> /dev/null )
if [ -n "${routeOutput}" ]; then
LogOut "Pinging "${mDNSV6}" on interface ${ifname}." >> "${log}"
ping6 -c 6 -I ${ifname} "${mDNSV6}" &> "${workPath}/ping6-mDNS-${ifname}.txt"
else
LogOut "No route to "${mDNSV6}" on interface ${ifname}." >> "${log}"
fi
# Send mDNS queries for services.
for service in "${serviceList[@]}"; do
LogOut "Sending mDNS queries for "${service}" on interface ${ifname}." >> "${log}"
for(( i = 1; i <= 3; ++i )); do
printf "\n"
"${dnssdutil}" mdnsquery -i "${ifname}" -n "${service}" -t ptr -r 2
printf "\n"
"${dnssdutil}" mdnsquery -i "${ifname}" -n "${service}" -t ptr -r 1 --QU -p 5353
printf "\n"
done >> "${workPath}/mdnsquery-${ifname}.txt" 2>&1
done
}
#============================================================================================================================
# RunMulticastTests
#============================================================================================================================
RunMulticastTests()
{
local interfaces=( $( ifconfig -l -u ) )
local skipPrefixes=( ap awdl bridge ipsec lo p2p pdp_ip pktap UDC utun )
local ifname=""
local pid=""
local pids=()
LogMsg "List of interfaces: ${interfaces[*]}"
for ifname in "${interfaces[@]}"; do
local skip=false
for prefix in ${skipPrefixes[@]}; do
if [[ ${ifname} =~ ^${prefix}[0-9]*$ ]]; then
skip=true
break
fi
done
if [ "${skip}" != "true" ]; then
ifconfig ${ifname} | grep -q inet
if [ $? -ne 0 ]; then
skip=true
fi
fi
if [ "${skip}" == "true" ]; then
continue
fi
LogMsg "Starting interface multicast tests for ${ifname}."
RunInterfaceMulticastTests "${ifname}" & pids+=($!)
done
LogMsg "Waiting for interface multicast tests to complete..."
for pid in "${pids[@]}"; do
wait "${pid}"
done
LogMsg "All interface multicast tests completed."
}
#============================================================================================================================
# RunBrowseTest
#============================================================================================================================
RunBrowseTest()
{
LogMsg "Running dnssdutil browseAll command."
"${dnssdutil}" browseAll -A -d local -b 10 -c 10 &> "${workPath}/browseAll.txt"
}
#============================================================================================================================
# IsMacOS
#============================================================================================================================
IsMacOS()
{
[[ $( sw_vers -productName ) =~ ^Mac\ OS ]]
}
#============================================================================================================================
# ArchiveLogs
#============================================================================================================================
ArchiveLogs()
{
local workdir=$( basename "${workPath}" )
local archivePath="${dstPath}/${workdir}.tar.gz"
LogMsg "Archiving logs."
echo "---"
tar -C "${tempPath}" -czf "${archivePath}" "${workdir}"
if [ -e "${archivePath}" ]; then
echo "Created log archive at ${archivePath}"
echo "*** Please run sysdiagnose NOW. ***"
echo "Attach both the log archive and the sysdiagnose archive to the radar."
if IsMacOS; then
open "${dstPath}"
fi
else
echo "Failed to create archive at ${archivePath}."
fi
echo "---"
}
#============================================================================================================================
# CreateWorkDirName
#============================================================================================================================
CreateWorkDirName()
{
local suffix=""
local productName=$( sw_vers -productName )
if [ -n "${productName}" ]; then
suffix+="_${productName}"
fi
local model=""
if IsMacOS; then
model=$( sysctl -n hw.model )
model=${model//,/-}
else
model=$( gestalt_query -undecorated DeviceName )
fi
if [ -n "${model}" ]; then
suffix+="_${model}"
fi
local buildVersion=$( sw_vers -buildVersion )
if [ -n "${buildVersion}" ]; then
suffix+="_${buildVersion}"
fi
suffix=${suffix//[^A-Za-z0-9._-]/_}
printf "bonjour-mcast-diags_$( date '+%Y.%m.%d_%H-%M-%S%z' )${suffix}"
}
#============================================================================================================================
# main
#============================================================================================================================
main()
{
while getopts ":hV" option; do
case "${option}" in
h)
PrintUsage
exit 0
;;
V)
echo "$( basename "${script}" ) version ${version}"
exit 0
;;
:)
ErrQuit "option '${OPTARG}' requires an argument."
;;
*)
ErrQuit "unknown option '${OPTARG}'."
;;
esac
done
[ "${OPTIND}" -gt "$#" ] || ErrQuit "unexpected argument \""${!OPTIND}"\"."
if IsMacOS; then
if [ "${EUID}" -ne 0 ]; then
echo "Re-launching with sudo"
exec sudo ${script}
fi
dstPath=/var/tmp
else
[ "${EUID}" -eq 0 ] || ErrQuit "$( basename "${script}" ) needs to be run as root."
dstPath=/var/mobile/Library/Logs/CrashReporter
fi
tempPath=$( mktemp -d -q ) || ErrQuit "Failed to make temp directory."
workPath="${tempPath}/$( CreateWorkDirName )"
mkdir "${workPath}" || ErrQuit "Failed to make work directory."
trap SignalHandler SIGINT SIGTERM
trap ExitHandler EXIT
LogMsg "About: $( basename "${script}" ) version ${version} ($( md5 -q ${script} ))."
if [ "${dnssdutil}" != "dnssdutil" ]; then
if [ -x "$( which "${dnssdutil}" )" ]; then
LogMsg "Using $( "${dnssdutil}" -V ) at $( which "${dnssdutil}" )."
else
LogMsg "WARNING: dnssdutil (${dnssdutil}) isn't an executable."
fi
fi
RunNetStat
StartPacketCapture
SaveExistingPacketCaptures
RunBrowseTest
RunMulticastTests
StopPacketCapture
ArchiveLogs
}
main "$@"

56
mDNSResponder/mDNSMacOSX/Scripts/bonjour-start-mdns-tcpdump Executable file
View File

@ -0,0 +1,56 @@
#! /bin/bash
#
# Copyright (c) 2018 Apple Inc. All rights reserved.
#
# This script is currently for Apple Internal use only.
#
version=1.0
script=${BASH_SOURCE[0]}
#============================================================================================================================
# PrintUsage
#============================================================================================================================
PrintUsage()
{
echo ""
echo "Usage: $( basename "${script}" ) [options]"
echo ""
echo "Options:"
echo " -V Display version of this script and exit."
echo ""
}
#============================================================================================================================
# main
#============================================================================================================================
main()
{
while getopts ":hV" option; do
case "${option}" in
h)
PrintUsage
exit 0
;;
V)
echo "$( basename "${script}" ) version ${version}"
exit 0
;;
:)
ErrQuit "option '${OPTARG}' requires an argument."
;;
*)
ErrQuit "unknown option '${OPTARG}'."
;;
esac
done
[ "${OPTIND}" -gt "$#" ] || ErrQuit "unexpected argument \""${!OPTIND}"\"."
launchctl load /Library/LaunchDaemons/com.apple.mDNSResponder.mdns-tcpdump.plist
launchctl start com.apple.mDNSResponder.mdns-tcpdump
}
main "$@"

21
mDNSResponder/mDNSMacOSX/Scripts/com.apple.mDNSResponder.mdns-tcpdump.plist Normal file
View File

@ -0,0 +1,21 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>com.apple.mDNSResponder.mdns-tcpdump</string>
<key>ProgramArguments</key>
<array>
<string>/usr/sbin/tcpdump</string>
<string>-w</string>
<string>/tmp/mdns-tcpdump.pcapng</string>
<string>-C</string>
<string>10</string>
<string>-W</string>
<string>16</string>
<string>( udp port 5353 ) or arp or icmp or icmp6</string>
</array>
<key>KeepAlive</key>
<false/>
</dict>
</plist>

20
mDNSResponder/mDNSMacOSX/daemon.c
View File

@ -62,6 +62,7 @@ static os_log_t log_general = NULL;
#define kPreferencesKey_DebugLogging CFSTR("DebugLogging") #define kPreferencesKey_DebugLogging CFSTR("DebugLogging")
#define kPreferencesKey_UnicastPacketLogging CFSTR("UnicastPacketLogging") #define kPreferencesKey_UnicastPacketLogging CFSTR("UnicastPacketLogging")
#define kPreferencesKey_AlwaysAppendSearchDomains CFSTR("AlwaysAppendSearchDomains") #define kPreferencesKey_AlwaysAppendSearchDomains CFSTR("AlwaysAppendSearchDomains")
#define kPreferencesKey_EnableAllowExpired CFSTR("EnableAllowExpired")
#define kPreferencesKey_NoMulticastAdvertisements CFSTR("NoMulticastAdvertisements") #define kPreferencesKey_NoMulticastAdvertisements CFSTR("NoMulticastAdvertisements")
#define kPreferencesKey_StrictUnicastOrdering CFSTR("StrictUnicastOrdering") #define kPreferencesKey_StrictUnicastOrdering CFSTR("StrictUnicastOrdering")
#define kPreferencesKey_OfferSleepProxyService CFSTR("OfferSleepProxyService") #define kPreferencesKey_OfferSleepProxyService CFSTR("OfferSleepProxyService")
@ -84,13 +85,13 @@ static os_log_t log_general = NULL;
static mDNS_PlatformSupport PlatformStorage; static mDNS_PlatformSupport PlatformStorage;
// Start off with a default cache of 32K (141 records of 232 bytes each) // Start off with a default cache of 32K (136 records of 240 bytes each)
// Each time we grow the cache we add another 141 records // Each time we grow the cache we add another 136 records
// 141 * 232 = 32712 bytes. // 136 * 240 = 32640 bytes.
// This fits in eight 4kB pages, with 56 bytes spare for memory block headers and similar overhead // This fits in eight 4kB pages, with 128 bytes spare for memory block headers and similar overhead
#define RR_CACHE_SIZE ((32*1024) / sizeof(CacheRecord)) #define RR_CACHE_SIZE ((32*1024) / sizeof(CacheRecord))
static CacheEntity rrcachestorage[RR_CACHE_SIZE]; static CacheEntity rrcachestorage[RR_CACHE_SIZE];
struct CompileTimeAssertionChecks_RR_CACHE_SIZE { char a[(RR_CACHE_SIZE >= 141) ? 1 : -1]; }; struct CompileTimeAssertionChecks_RR_CACHE_SIZE { char a[(RR_CACHE_SIZE >= 136) ? 1 : -1]; };
#define kRRCacheGrowSize (sizeof(CacheEntity) * RR_CACHE_SIZE) #define kRRCacheGrowSize (sizeof(CacheEntity) * RR_CACHE_SIZE)
@ -107,6 +108,7 @@ static mDNSBool NoMulticastAdvertisements = mDNSfalse; // By default, advertise
extern mDNSBool StrictUnicastOrdering; extern mDNSBool StrictUnicastOrdering;
extern mDNSBool AlwaysAppendSearchDomains; extern mDNSBool AlwaysAppendSearchDomains;
extern mDNSBool EnableAllowExpired;
#if ENABLE_BLE_TRIGGERED_BONJOUR #if ENABLE_BLE_TRIGGERED_BONJOUR
extern mDNSBool EnableBLEBasedDiscovery; extern mDNSBool EnableBLEBasedDiscovery;
@ -571,7 +573,7 @@ mDNSexport void mDNSPlatformLogToFile(int log_level, const char *buffer)
if (!log_general) if (!log_general)
os_log_error(OS_LOG_DEFAULT, "Could NOT create log handle in init_logging()"); os_log_error(OS_LOG_DEFAULT, "Could NOT create log handle in init_logging()");
else else
os_log_with_type(log_general, log_level, "%s", buffer); os_log_with_type(log_general, log_level, "%{private}s", buffer);
} }
@ -652,6 +654,7 @@ mDNSlocal void SignalCallback(CFMachPortRef port, void *msg, CFIndex size, void
mDNS_Lock(m); mDNS_Lock(m);
FORALL_CACHERECORDS(slot, cg, rr) FORALL_CACHERECORDS(slot, cg, rr)
{ {
rr->resrec.mortality = Mortality_Mortal;
mDNS_PurgeCacheResourceRecord(m, rr); mDNS_PurgeCacheResourceRecord(m, rr);
} }
// Restart unicast and multicast queries // Restart unicast and multicast queries
@ -763,7 +766,8 @@ mDNSlocal void SignalDispatch(dispatch_source_t source)
mDNS_Lock(m); mDNS_Lock(m);
FORALL_CACHERECORDS(slot, cg, rr) FORALL_CACHERECORDS(slot, cg, rr)
{ {
mDNS_PurgeCacheResourceRecord(m, rr); rr->resrec.mortality = Mortality_Mortal;
mDNS_PurgeCacheResourceRecord(m, rr);
} }
// Restart unicast and multicast queries // Restart unicast and multicast queries
mDNSCoreRestartQueries(m); mDNSCoreRestartQueries(m);
@ -1528,6 +1532,7 @@ mDNSexport int main(int argc, char **argv)
UseInternalSleepProxy = (i+1<argc && mDNSIsDigit(argv[i+1][0]) && argv[i+1][1]==0) ? atoi(argv[++i]) : 1; UseInternalSleepProxy = (i+1<argc && mDNSIsDigit(argv[i+1][0]) && argv[i+1][1]==0) ? atoi(argv[++i]) : 1;
if (!strcasecmp(argv[i], "-StrictUnicastOrdering" )) StrictUnicastOrdering = mDNStrue; if (!strcasecmp(argv[i], "-StrictUnicastOrdering" )) StrictUnicastOrdering = mDNStrue;
if (!strcasecmp(argv[i], "-AlwaysAppendSearchDomains")) AlwaysAppendSearchDomains = mDNStrue; if (!strcasecmp(argv[i], "-AlwaysAppendSearchDomains")) AlwaysAppendSearchDomains = mDNStrue;
if (!strcasecmp(argv[i], "-DisableAllowExpired" )) EnableAllowExpired = mDNSfalse;
#if DEBUG #if DEBUG
if (!strcasecmp(argv[i], "-UseDebugSocket")) useDebugSocket = mDNStrue; if (!strcasecmp(argv[i], "-UseDebugSocket")) useDebugSocket = mDNStrue;
if (!strcasecmp(argv[i], "-NoSandbox")) useSandbox = mDNSfalse; if (!strcasecmp(argv[i], "-NoSandbox")) useSandbox = mDNSfalse;
@ -1568,6 +1573,7 @@ mDNSexport int main(int argc, char **argv)
NoMulticastAdvertisements = PreferencesGetValueBool(kPreferencesKey_NoMulticastAdvertisements, NoMulticastAdvertisements); NoMulticastAdvertisements = PreferencesGetValueBool(kPreferencesKey_NoMulticastAdvertisements, NoMulticastAdvertisements);
StrictUnicastOrdering = PreferencesGetValueBool(kPreferencesKey_StrictUnicastOrdering, StrictUnicastOrdering); StrictUnicastOrdering = PreferencesGetValueBool(kPreferencesKey_StrictUnicastOrdering, StrictUnicastOrdering);
AlwaysAppendSearchDomains = PreferencesGetValueBool(kPreferencesKey_AlwaysAppendSearchDomains, AlwaysAppendSearchDomains); AlwaysAppendSearchDomains = PreferencesGetValueBool(kPreferencesKey_AlwaysAppendSearchDomains, AlwaysAppendSearchDomains);
EnableAllowExpired = PreferencesGetValueBool(kPreferencesKey_EnableAllowExpired, EnableAllowExpired);
OfferSleepProxyService = PreferencesGetValueInt(kPreferencesKey_OfferSleepProxyService, OfferSleepProxyService); OfferSleepProxyService = PreferencesGetValueInt(kPreferencesKey_OfferSleepProxyService, OfferSleepProxyService);
UseInternalSleepProxy = PreferencesGetValueInt(kPreferencesKey_UseInternalSleepProxy, UseInternalSleepProxy); UseInternalSleepProxy = PreferencesGetValueInt(kPreferencesKey_UseInternalSleepProxy, UseInternalSleepProxy);

18
mDNSResponder/mDNSMacOSX/helper-stubs.c
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2007-2015 Apple Inc. All rights reserved. * Copyright (c) 2007-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -55,10 +55,10 @@ static int64_t maxwait_secs = 5LL;
//************************************************************************************************************* //*************************************************************************************************************
// Utility Functions // Utility Functions
static void LogDebug(const char *prefix, xpc_object_t o) static void HelperLog(const char *prefix, xpc_object_t o)
{ {
char *desc = xpc_copy_description(o); char *desc = xpc_copy_description(o);
mDNSHELPER_DEBUG("LogDebug %s: %s", prefix, desc); mDNSHELPER_DEBUG("HelperLog %s: %s", prefix, desc);
free(desc); free(desc);
} }
@ -83,7 +83,7 @@ mDNSlocal int SendDict_ToServer(xpc_object_t msg)
{ {
__block int errorcode = kHelperErr_NoResponse; __block int errorcode = kHelperErr_NoResponse;
LogDebug("SendDict_ToServer Sending msg to Daemon", msg); HelperLog("SendDict_ToServer Sending msg to Daemon", msg);
dispatch_semaphore_t sem = dispatch_semaphore_create(0); dispatch_semaphore_t sem = dispatch_semaphore_create(0);
dispatch_retain(sem); // for the block below dispatch_retain(sem); // for the block below
@ -94,7 +94,7 @@ mDNSlocal int SendDict_ToServer(xpc_object_t msg)
if (type == XPC_TYPE_DICTIONARY) if (type == XPC_TYPE_DICTIONARY)
{ {
LogDebug("SendDict_ToServer Received reply msg from Daemon", recv_msg); HelperLog("SendDict_ToServer Received reply msg from Daemon", recv_msg);
uint64_t reply_status = xpc_dictionary_get_uint64(recv_msg, kHelperReplyStatus); uint64_t reply_status = xpc_dictionary_get_uint64(recv_msg, kHelperReplyStatus);
errorcode = xpc_dictionary_get_int64(recv_msg, kHelperErrCode); errorcode = xpc_dictionary_get_int64(recv_msg, kHelperErrCode);
@ -112,7 +112,7 @@ mDNSlocal int SendDict_ToServer(xpc_object_t msg)
{ {
LogMsg("SendDict_ToServer Received unexpected reply from daemon [%s]", LogMsg("SendDict_ToServer Received unexpected reply from daemon [%s]",
xpc_dictionary_get_string(recv_msg, XPC_ERROR_KEY_DESCRIPTION)); xpc_dictionary_get_string(recv_msg, XPC_ERROR_KEY_DESCRIPTION));
LogDebug("SendDict_ToServer Unexpected Reply contents", recv_msg); HelperLog("SendDict_ToServer Unexpected Reply contents", recv_msg);
} }
dispatch_semaphore_signal(sem); dispatch_semaphore_signal(sem);
@ -137,7 +137,7 @@ mDNSlocal xpc_object_t SendDict_GetReply(xpc_object_t msg)
if (!dict) return NULL; if (!dict) return NULL;
xpc_retain(dict); xpc_retain(dict);
LogDebug("SendDict_GetReply Sending msg to Daemon", msg); HelperLog("SendDict_GetReply Sending msg to Daemon", msg);
dispatch_semaphore_t sem = dispatch_semaphore_create(0); dispatch_semaphore_t sem = dispatch_semaphore_create(0);
dispatch_retain(sem); // for the block below dispatch_retain(sem); // for the block below
@ -148,7 +148,7 @@ mDNSlocal xpc_object_t SendDict_GetReply(xpc_object_t msg)
if (type == XPC_TYPE_DICTIONARY) if (type == XPC_TYPE_DICTIONARY)
{ {
LogDebug("SendDict_GetReply Received reply msg from Daemon", recv_msg); HelperLog("SendDict_GetReply Received reply msg from Daemon", recv_msg);
uint64_t reply_status = xpc_dictionary_get_uint64(recv_msg, kHelperReplyStatus); uint64_t reply_status = xpc_dictionary_get_uint64(recv_msg, kHelperReplyStatus);
switch (reply_status) switch (reply_status)
@ -171,7 +171,7 @@ mDNSlocal xpc_object_t SendDict_GetReply(xpc_object_t msg)
{ {
LogMsg("SendDict_GetReply Received unexpected reply from daemon [%s]", LogMsg("SendDict_GetReply Received unexpected reply from daemon [%s]",
xpc_dictionary_get_string(recv_msg, XPC_ERROR_KEY_DESCRIPTION)); xpc_dictionary_get_string(recv_msg, XPC_ERROR_KEY_DESCRIPTION));
LogDebug("SendDict_GetReply Unexpected Reply contents", recv_msg); HelperLog("SendDict_GetReply Unexpected Reply contents", recv_msg);
} }
dispatch_semaphore_signal(sem); dispatch_semaphore_signal(sem);

15
mDNSResponder/mDNSMacOSX/helper.c
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2007-2015 Apple Inc. All rights reserved. * Copyright (c) 2007-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -710,7 +710,12 @@ fin:
enum DNSKeyFormat enum DNSKeyFormat
{ {
formatNotDNSKey, formatDdnsTypeItem, formatDnsPrefixedServiceItem, formatBtmmPrefixedServiceItem formatNotDNSKey,
formatDdnsTypeItem,
formatDnsPrefixedServiceItem,
#if MDNSRESPONDER_BTMM_SUPPORT
formatBtmmPrefixedServiceItem
#endif
}; };
// On Mac OS X on Intel, the four-character string seems to be stored backwards, at least sometimes. // On Mac OS X on Intel, the four-character string seems to be stored backwards, at least sometimes.
@ -720,7 +725,9 @@ enum DNSKeyFormat
#ifndef NO_SECURITYFRAMEWORK #ifndef NO_SECURITYFRAMEWORK
#if MDNSRESPONDER_BTMM_SUPPORT
static const char btmmprefix[] = "btmmdns:"; static const char btmmprefix[] = "btmmdns:";
#endif
static const char dnsprefix[] = "dns:"; static const char dnsprefix[] = "dns:";
static const char ddns[] = "ddns"; static const char ddns[] = "ddns";
static const char ddnsrev[] = "sndd"; static const char ddnsrev[] = "sndd";
@ -778,8 +785,10 @@ static enum DNSKeyFormat getDNSKeyFormat(SecKeychainItemRef item, SecKeychainAtt
} }
if (attributes->attr[1].length >= sizeof(dnsprefix)-1 && 0 == strncasecmp(attributes->attr[1].data, dnsprefix, sizeof(dnsprefix)-1)) if (attributes->attr[1].length >= sizeof(dnsprefix)-1 && 0 == strncasecmp(attributes->attr[1].data, dnsprefix, sizeof(dnsprefix)-1))
format = formatDnsPrefixedServiceItem; format = formatDnsPrefixedServiceItem;
#if MDNSRESPONDER_BTMM_SUPPORT
else if (attributes->attr[1].length >= sizeof(btmmprefix)-1 && 0 == strncasecmp(attributes->attr[1].data, btmmprefix, sizeof(btmmprefix)-1)) else if (attributes->attr[1].length >= sizeof(btmmprefix)-1 && 0 == strncasecmp(attributes->attr[1].data, btmmprefix, sizeof(btmmprefix)-1))
format = formatBtmmPrefixedServiceItem; format = formatBtmmPrefixedServiceItem;
#endif
else if (attributes->attr[0].length == sizeof(ddns)-1 && 0 == strncasecmp(attributes->attr[0].data, ddns, sizeof(ddns)-1)) else if (attributes->attr[0].length == sizeof(ddns)-1 && 0 == strncasecmp(attributes->attr[0].data, ddns, sizeof(ddns)-1))
format = formatDdnsTypeItem; format = formatDdnsTypeItem;
else if (attributes->attr[0].length == sizeof(ddnsrev)-1 && 0 == strncasecmp(attributes->attr[0].data, ddnsrev, sizeof(ddnsrev)-1)) else if (attributes->attr[0].length == sizeof(ddnsrev)-1 && 0 == strncasecmp(attributes->attr[0].data, ddnsrev, sizeof(ddnsrev)-1))
@ -821,7 +830,9 @@ static CFPropertyListRef copyKeychainItemInfo(SecKeychainItemRef item, SecKeycha
data = CFDataCreate(kCFAllocatorDefault, attributes->attr[1].data, attributes->attr[1].length); data = CFDataCreate(kCFAllocatorDefault, attributes->attr[1].data, attributes->attr[1].length);
break; break;
case formatDnsPrefixedServiceItem: case formatDnsPrefixedServiceItem:
#if MDNSRESPONDER_BTMM_SUPPORT
case formatBtmmPrefixedServiceItem: case formatBtmmPrefixedServiceItem:
#endif
data = CFDataCreate(kCFAllocatorDefault, attributes->attr[1].data, attributes->attr[1].length); data = CFDataCreate(kCFAllocatorDefault, attributes->attr[1].data, attributes->attr[1].length);
break; break;
default: default:

280
mDNSResponder/mDNSMacOSX/mDNSMacOSX.c
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2002-2016 Apple Inc. All rights reserved. * Copyright (c) 2002-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -86,22 +86,22 @@
#include <SystemConfiguration/SCPrivate.h> #include <SystemConfiguration/SCPrivate.h>
#if TARGET_OS_IPHONE #if TARGET_OS_IPHONE
// For WiFiManagerClientRef etc, declarations. #include <MobileWiFi/WiFiManagerClient.h> // For WiFiManagerClientRef etc, declarations.
#include <MobileGestalt.h>
#include <MobileWiFi/WiFiManagerClient.h>
#include <dlfcn.h> #include <dlfcn.h>
#include <os/variant_private.h> // For os_variant_has_internal_diagnostics().
#endif // TARGET_OS_IPHONE #endif // TARGET_OS_IPHONE
// Include definition of opaque_presence_indication for KEV_DL_NODE_PRESENCE handling logic. // Include definition of opaque_presence_indication for KEV_DL_NODE_PRESENCE handling logic.
#include <Kernel/IOKit/apple80211/apple80211_var.h> #include <Kernel/IOKit/apple80211/apple80211_var.h>
#include <network_information.h> // for nwi_state #include <network_information.h> // for nwi_state
#if APPLE_OSX_mDNSResponder #if MDNSRESPONDER_BTMM_SUPPORT
#include <AWACS.h> #include <AWACS.h>
#endif
#if APPLE_OSX_mDNSResponder
#include <ne_session.h> // for ne_session_set_socket_attributes() #include <ne_session.h> // for ne_session_set_socket_attributes()
#else #endif
#define NO_AWACS 1
#endif // APPLE_OSX_mDNSResponder
#if APPLE_OSX_mDNSResponder && !TARGET_OS_EMBEDDED #if APPLE_OSX_mDNSResponder && !TARGET_OS_EMBEDDED
#include <IOKit/platform/IOPlatformSupportPrivate.h> #include <IOKit/platform/IOPlatformSupportPrivate.h>
@ -153,9 +153,11 @@ static CFStringRef NetworkChangedKey_Computername;
static CFStringRef NetworkChangedKey_DNS; static CFStringRef NetworkChangedKey_DNS;
static CFStringRef NetworkChangedKey_StateInterfacePrefix; static CFStringRef NetworkChangedKey_StateInterfacePrefix;
static CFStringRef NetworkChangedKey_DynamicDNS = CFSTR("Setup:/Network/DynamicDNS"); static CFStringRef NetworkChangedKey_DynamicDNS = CFSTR("Setup:/Network/DynamicDNS");
static CFStringRef NetworkChangedKey_PowerSettings = CFSTR("State:/IOKit/PowerManagement/CurrentSettings");
#if MDNSRESPONDER_BTMM_SUPPORT
static CFStringRef NetworkChangedKey_BackToMyMac = CFSTR("Setup:/Network/BackToMyMac"); static CFStringRef NetworkChangedKey_BackToMyMac = CFSTR("Setup:/Network/BackToMyMac");
static CFStringRef NetworkChangedKey_BTMMConnectivity = CFSTR("State:/Network/Connectivity"); static CFStringRef NetworkChangedKey_BTMMConnectivity = CFSTR("State:/Network/Connectivity");
static CFStringRef NetworkChangedKey_PowerSettings = CFSTR("State:/IOKit/PowerManagement/CurrentSettings"); #endif
static char HINFO_HWstring_buffer[32]; static char HINFO_HWstring_buffer[32];
static char *HINFO_HWstring = "Device"; static char *HINFO_HWstring = "Device";
@ -794,8 +796,8 @@ mDNSexport mStatus mDNSPlatformSendUDP(const mDNS *const m, const void *const ms
s, InterfaceID, ifa_name, dst->type, dst, mDNSVal16(dstPort), s, err, sendto_errno, strerror(sendto_errno), (mDNSu32)(m->timenow)); s, InterfaceID, ifa_name, dst->type, dst, mDNSVal16(dstPort), s, err, sendto_errno, strerror(sendto_errno), (mDNSu32)(m->timenow));
if (!mDNSAddressIsAllDNSLinkGroup(dst)) if (!mDNSAddressIsAllDNSLinkGroup(dst))
{ {
if (sendto_errno == EHOSTUNREACH) return(mStatus_HostUnreachErr); if ((sendto_errno == EHOSTUNREACH) || (sendto_errno == ENETUNREACH)) return(mStatus_HostUnreachErr);
if (sendto_errno == EHOSTDOWN || sendto_errno == ENETDOWN || sendto_errno == ENETUNREACH) return(mStatus_TransientErr); if ((sendto_errno == EHOSTDOWN) || (sendto_errno == ENETDOWN)) return(mStatus_TransientErr);
} }
// Don't report EHOSTUNREACH in the first three minutes after boot // Don't report EHOSTUNREACH in the first three minutes after boot
// This is because mDNSResponder intentionally starts up early in the boot process (See <rdar://problem/3409090>) // This is because mDNSResponder intentionally starts up early in the boot process (See <rdar://problem/3409090>)
@ -3310,6 +3312,40 @@ mDNSlocal u_int64_t getExtendedFlags(char * ifa_name)
return ifr.ifr_eflags; return ifr.ifr_eflags;
} }
#if TARGET_OS_OSX
// IFRTYPE_FUNCTIONAL_INTCOPROC type interfaces on macOS do not support Bonjour discovery.
mDNSlocal mDNSBool isCoprocessorInterface(int sockFD, char * ifa_name)
{
struct ifreq ifr;
if (sockFD < 0)
{
LogMsg("isCoprocessorInterface: invalid socket FD passed: %d", sockFD);
return mDNSfalse;
}
memset(&ifr, 0, sizeof(struct ifreq));
strlcpy(ifr.ifr_name, ifa_name, sizeof(ifr.ifr_name));
if (ioctl(sockFD, SIOCGIFFUNCTIONALTYPE, (caddr_t)&ifr) == -1)
{
LogMsg("isCoprocessorInterface: SIOCGIFFUNCTIONALTYPE failed, errno = %d (%s)", errno, strerror(errno));
return mDNSfalse;
}
if (ifr.ifr_functional_type == IFRTYPE_FUNCTIONAL_INTCOPROC)
{
LogMsg("isCoprocessorInterface: %s marked as coprocessor interface", ifa_name);
return mDNStrue;
}
else
return mDNSfalse;
}
#else // TARGET_OS_OSX
#define isCoprocessorInterface(A, B) mDNSfalse
#endif // TARGET_OS_OSX
#if TARGET_OS_IPHONE #if TARGET_OS_IPHONE
// Function pointers for the routines we use in the MobileWiFi framework. // Function pointers for the routines we use in the MobileWiFi framework.
@ -3499,7 +3535,17 @@ mDNSlocal NetworkInterfaceInfoOSX *AddInterfaceToList(struct ifaddrs *ifa, mDNSs
// we get the corresponding name for the interface index on which the packet was received and check against // we get the corresponding name for the interface index on which the packet was received and check against
// the InterfaceList for a matching name. So, keep the name in sync // the InterfaceList for a matching name. So, keep the name in sync
strlcpy((*p)->ifinfo.ifname, ifa->ifa_name, sizeof((*p)->ifinfo.ifname)); strlcpy((*p)->ifinfo.ifname, ifa->ifa_name, sizeof((*p)->ifinfo.ifname));
(*p)->Exists = mDNStrue;
// Determine if multicast state has changed.
const mDNSBool txrx = MulticastInterface(*p);
if ((*p)->ifinfo.McastTxRx != txrx)
{
(*p)->ifinfo.McastTxRx = txrx;
(*p)->Exists = MulticastStateChanged; // State change; need to deregister and reregister this interface
}
else
(*p)->Exists = mDNStrue;
// If interface was not in getifaddrs list last time we looked, but it is now, update 'AppearanceTime' for this record // If interface was not in getifaddrs list last time we looked, but it is now, update 'AppearanceTime' for this record
if ((*p)->LastSeen != utc) (*p)->AppearanceTime = utc; if ((*p)->LastSeen != utc) (*p)->AppearanceTime = utc;
@ -3539,7 +3585,6 @@ mDNSlocal NetworkInterfaceInfoOSX *AddInterfaceToList(struct ifaddrs *ifa, mDNSs
// We can be configured to disable multicast advertisement, but we want to to support // We can be configured to disable multicast advertisement, but we want to to support
// local-only services, which need a loopback address record. // local-only services, which need a loopback address record.
i->ifinfo.Advertise = m->DivertMulticastAdvertisements ? ((ifa->ifa_flags & IFF_LOOPBACK) ? mDNStrue : mDNSfalse) : m->AdvertiseLocalAddresses; i->ifinfo.Advertise = m->DivertMulticastAdvertisements ? ((ifa->ifa_flags & IFF_LOOPBACK) ? mDNStrue : mDNSfalse) : m->AdvertiseLocalAddresses;
i->ifinfo.McastTxRx = mDNSfalse; // For now; will be set up later at the end of UpdateInterfaceList
i->ifinfo.Loopback = ((ifa->ifa_flags & IFF_LOOPBACK) != 0) ? mDNStrue : mDNSfalse; i->ifinfo.Loopback = ((ifa->ifa_flags & IFF_LOOPBACK) != 0) ? mDNStrue : mDNSfalse;
i->ifinfo.IgnoreIPv4LL = ((eflags & IFEF_ARPLL) != 0) ? mDNSfalse : mDNStrue; i->ifinfo.IgnoreIPv4LL = ((eflags & IFEF_ARPLL) != 0) ? mDNSfalse : mDNStrue;
@ -3566,6 +3611,7 @@ mDNSlocal NetworkInterfaceInfoOSX *AddInterfaceToList(struct ifaddrs *ifa, mDNSs
LogInfo("AddInterfaceToList: D2DInterface set for %s", ifa->ifa_name); LogInfo("AddInterfaceToList: D2DInterface set for %s", ifa->ifa_name);
i->isExpensive = (eflags & IFEF_EXPENSIVE) ? mDNStrue: mDNSfalse; i->isExpensive = (eflags & IFEF_EXPENSIVE) ? mDNStrue: mDNSfalse;
i->isAWDL = (eflags & IFEF_AWDL) ? mDNStrue: mDNSfalse;
if (eflags & IFEF_AWDL) if (eflags & IFEF_AWDL)
{ {
// Set SupportsUnicastMDNSResponse false for the AWDL interface since unicast reserves // Set SupportsUnicastMDNSResponse false for the AWDL interface since unicast reserves
@ -3590,6 +3636,8 @@ mDNSlocal NetworkInterfaceInfoOSX *AddInterfaceToList(struct ifaddrs *ifa, mDNSs
i->BPF_len = 0; i->BPF_len = 0;
i->Registered = mDNSNULL; i->Registered = mDNSNULL;
// MulticastInterface() depends on the "m" and "ifa_flags" values being initialized above.
i->ifinfo.McastTxRx = MulticastInterface(i);
// Do this AFTER i->BSSID has been set up // Do this AFTER i->BSSID has been set up
i->ifinfo.NetWake = (eflags & IFEF_EXPENSIVE)? mDNSfalse : NetWakeInterface(i); i->ifinfo.NetWake = (eflags & IFEF_EXPENSIVE)? mDNSfalse : NetWakeInterface(i);
GetMAC(&i->ifinfo.MAC, scope_id); GetMAC(&i->ifinfo.MAC, scope_id);
@ -4827,14 +4875,14 @@ mDNSlocal mStatus UpdateInterfaceList(mDNSs32 utc)
mDNSPlatformMemCopy(m->PrimaryMAC.b, sdl->sdl_data + sdl->sdl_nlen, 6); mDNSPlatformMemCopy(m->PrimaryMAC.b, sdl->sdl_data + sdl->sdl_nlen, 6);
} }
if (ifa->ifa_flags & IFF_UP && ifa->ifa_addr) if (ifa->ifa_flags & IFF_UP && ifa->ifa_addr && !isCoprocessorInterface(InfoSocket, ifa->ifa_name))
if (ifa->ifa_addr->sa_family == AF_INET || ifa->ifa_addr->sa_family == AF_INET6) if (ifa->ifa_addr->sa_family == AF_INET || ifa->ifa_addr->sa_family == AF_INET6)
{ {
if (!ifa->ifa_netmask) if (!ifa->ifa_netmask)
{ {
mDNSAddr ip; mDNSAddr ip;
SetupAddr(&ip, ifa->ifa_addr); SetupAddr(&ip, ifa->ifa_addr);
LogMsg("getifaddrs: ifa_netmask is NULL for %5s(%d) Flags %04X Family %2d %#a", LogMsg("UpdateInterfaceList: ifa_netmask is NULL for %5s(%d) Flags %04X Family %2d %#a",
ifa->ifa_name, if_nametoindex(ifa->ifa_name), ifa->ifa_flags, ifa->ifa_addr->sa_family, &ip); ifa->ifa_name, if_nametoindex(ifa->ifa_name), ifa->ifa_flags, ifa->ifa_addr->sa_family, &ip);
} }
// Apparently it's normal for the sa_family of an ifa_netmask to sometimes be zero, so we don't complain about that // Apparently it's normal for the sa_family of an ifa_netmask to sometimes be zero, so we don't complain about that
@ -4843,7 +4891,7 @@ mDNSlocal mStatus UpdateInterfaceList(mDNSs32 utc)
{ {
mDNSAddr ip; mDNSAddr ip;
SetupAddr(&ip, ifa->ifa_addr); SetupAddr(&ip, ifa->ifa_addr);
LogMsg("getifaddrs ifa_netmask for %5s(%d) Flags %04X Family %2d %#a has different family: %d", LogMsg("UpdateInterfaceList: ifa_netmask for %5s(%d) Flags %04X Family %2d %#a has different family: %d",
ifa->ifa_name, if_nametoindex(ifa->ifa_name), ifa->ifa_flags, ifa->ifa_addr->sa_family, &ip, ifa->ifa_netmask->sa_family); ifa->ifa_name, if_nametoindex(ifa->ifa_name), ifa->ifa_flags, ifa->ifa_addr->sa_family, &ip, ifa->ifa_netmask->sa_family);
} }
// Currently we use a few internal ones like mDNSInterfaceID_LocalOnly etc. that are negative values (0, -1, -2). // Currently we use a few internal ones like mDNSInterfaceID_LocalOnly etc. that are negative values (0, -1, -2).
@ -4900,19 +4948,6 @@ mDNSlocal mStatus UpdateInterfaceList(mDNSs32 utc)
if (!foundav4 && v4Loopback) AddInterfaceToList(v4Loopback, utc); if (!foundav4 && v4Loopback) AddInterfaceToList(v4Loopback, utc);
if (!foundav6 && v6Loopback) AddInterfaceToList(v6Loopback, utc); if (!foundav6 && v6Loopback) AddInterfaceToList(v6Loopback, utc);
// Now the list is complete, set the McastTxRx setting for each interface.
NetworkInterfaceInfoOSX *i;
for (i = m->p->InterfaceList; i; i = i->next)
if (i->Exists)
{
mDNSBool txrx = MulticastInterface(i);
if (i->ifinfo.McastTxRx != txrx)
{
i->ifinfo.McastTxRx = txrx;
i->Exists = MulticastStateChanged; // State change; need to deregister and reregister this interface
}
}
if (InfoSocket >= 0) if (InfoSocket >= 0)
close(InfoSocket); close(InfoSocket);
@ -5234,7 +5269,7 @@ mDNSlocal int ClearInactiveInterfaces(mDNSs32 utc)
if (!i->Exists) if (!i->Exists)
{ {
if (i->LastSeen == utc) i->LastSeen = utc - 1; if (i->LastSeen == utc) i->LastSeen = utc - 1;
mDNSBool delete = (NumCacheRecordsForInterfaceID(m, i->ifinfo.InterfaceID) == 0) && (utc - i->LastSeen >= 60); const mDNSBool delete = (i->isAWDL || (NumCacheRecordsForInterfaceID(m, i->ifinfo.InterfaceID) == 0)) && (utc - i->LastSeen >= 60);
LogInfo("ClearInactiveInterfaces: %-13s %5s(%lu) %.6a InterfaceID %p(%p) %#a/%d Age %d%s", delete ? "Deleting" : "Holding", LogInfo("ClearInactiveInterfaces: %-13s %5s(%lu) %.6a InterfaceID %p(%p) %#a/%d Age %d%s", delete ? "Deleting" : "Holding",
i->ifinfo.ifname, i->scope_id, &i->BSSID, i->ifinfo.InterfaceID, i, i->ifinfo.ifname, i->scope_id, &i->BSSID, i->ifinfo.InterfaceID, i,
&i->ifinfo.ip, CountMaskBits(&i->ifinfo.mask), utc - i->LastSeen, &i->ifinfo.ip, CountMaskBits(&i->ifinfo.mask), utc - i->LastSeen,
@ -5818,6 +5853,7 @@ mDNSlocal void SetupDDNSDomains(domainname *const fqdn, DNameListElem **RegDomai
} }
CFRelease(ddnsdict); CFRelease(ddnsdict);
} }
#if MDNSRESPONDER_BTMM_SUPPORT
if (RegDomains) if (RegDomains)
{ {
CFDictionaryRef btmm = SCDynamicStoreCopyValue(NULL, NetworkChangedKey_BackToMyMac); CFDictionaryRef btmm = SCDynamicStoreCopyValue(NULL, NetworkChangedKey_BackToMyMac);
@ -5847,7 +5883,7 @@ mDNSlocal void SetupDDNSDomains(domainname *const fqdn, DNameListElem **RegDomai
CFRelease(btmm); CFRelease(btmm);
} }
} }
#endif
} }
// Returns mDNSfalse, if it does not set the configuration i.e., if the DNS configuration did not change // Returns mDNSfalse, if it does not set the configuration i.e., if the DNS configuration did not change
@ -6141,7 +6177,7 @@ mDNSexport void mDNSPlatformDynDNSHostNameStatusChanged(const domainname *const
} }
} }
#if APPLE_OSX_mDNSResponder #if MDNSRESPONDER_BTMM_SUPPORT
#if !NO_AWACS #if !NO_AWACS
// checks whether a domain is present in Setup:/Network/BackToMyMac. Just because there is a key in the // checks whether a domain is present in Setup:/Network/BackToMyMac. Just because there is a key in the
@ -6283,7 +6319,7 @@ mDNSlocal void UpdateBTMMRelayConnection(mDNS *const m)
else LogInfo("UpdateBTMMRelayConnection: Not calling AWS_Disconnect"); else LogInfo("UpdateBTMMRelayConnection: Not calling AWS_Disconnect");
} }
} }
#elif !TARGET_OS_EMBEDDED #else
mDNSlocal void UpdateBTMMRelayConnection(mDNS *const m) mDNSlocal void UpdateBTMMRelayConnection(mDNS *const m)
{ {
(void) m; // Unused (void) m; // Unused
@ -6291,11 +6327,9 @@ mDNSlocal void UpdateBTMMRelayConnection(mDNS *const m)
} }
#endif // ! NO_AWACS #endif // ! NO_AWACS
#if !TARGET_OS_EMBEDDED
mDNSlocal void ProcessConndConfigChanges(void); mDNSlocal void ProcessConndConfigChanges(void);
#endif
#endif // APPLE_OSX_mDNSResponder #endif // MDNSRESPONDER_BTMM_SUPPORT
// MUST be called holding the lock // MUST be called holding the lock
mDNSlocal void SetDomainSecrets_internal(mDNS *m) mDNSlocal void SetDomainSecrets_internal(mDNS *m)
@ -6369,11 +6403,13 @@ mDNSlocal void SetDomainSecrets_internal(mDNS *m)
offset = 0; offset = 0;
if (!strncmp(stringbuf, dnsprefix, strlen(dnsprefix))) if (!strncmp(stringbuf, dnsprefix, strlen(dnsprefix)))
offset = strlen(dnsprefix); offset = strlen(dnsprefix);
#if MDNSRESPONDER_BTMM_SUPPORT
else if (!strncmp(stringbuf, btmmprefix, strlen(btmmprefix))) else if (!strncmp(stringbuf, btmmprefix, strlen(btmmprefix)))
{ {
AutoTunnel = mDNStrue; AutoTunnel = mDNStrue;
offset = strlen(btmmprefix); offset = strlen(btmmprefix);
} }
#endif
domainname domain; domainname domain;
if (!MakeDomainNameFromDNSNameString(&domain, stringbuf + offset)) { LogMsg("SetDomainSecrets: bad key domain %s", stringbuf); continue; } if (!MakeDomainNameFromDNSNameString(&domain, stringbuf + offset)) { LogMsg("SetDomainSecrets: bad key domain %s", stringbuf); continue; }
@ -6555,7 +6591,9 @@ mDNSlocal void SetDomainSecrets_internal(mDNS *m)
} }
UpdateAnonymousRacoonConfig(m); // Determine whether we need racoon to accept incoming connections UpdateAnonymousRacoonConfig(m); // Determine whether we need racoon to accept incoming connections
#if MDNSRESPONDER_BTMM_SUPPORT
ProcessConndConfigChanges(); // Update AutoTunnelInnerAddress values and default ipsec policies as necessary ProcessConndConfigChanges(); // Update AutoTunnelInnerAddress values and default ipsec policies as necessary
#endif
} }
#endif // APPLE_OSX_mDNSResponder #endif // APPLE_OSX_mDNSResponder
@ -7236,8 +7274,9 @@ mDNSexport void RemoveAutoTunnel6Record(mDNS *const m)
if (info->AutoTunnel) if (info->AutoTunnel)
UpdateAutoTunnel6Record(m, info); UpdateAutoTunnel6Record(m, info);
} }
#endif /* APPLE_OSX_mDNSResponder */
#if !TARGET_OS_EMBEDDED #if MDNSRESPONDER_BTMM_SUPPORT
mDNSlocal mDNSBool IPv6AddressIsOnInterface(mDNSv6Addr ipv6Addr, char *ifname) mDNSlocal mDNSBool IPv6AddressIsOnInterface(mDNSv6Addr ipv6Addr, char *ifname)
{ {
struct ifaddrs *ifa; struct ifaddrs *ifa;
@ -7474,8 +7513,7 @@ mDNSlocal void ProcessConndConfigChanges(void)
// If awacsd crashes or exits for some reason, restart it // If awacsd crashes or exits for some reason, restart it
UpdateBTMMRelayConnection(m); UpdateBTMMRelayConnection(m);
} }
#endif // !TARGET_OS_EMBEDDED #endif // MDNSRESPONDER_BTMM_SUPPORT
#endif /* APPLE_OSX_mDNSResponder */
mDNSlocal mDNSBool IsAppleNetwork(mDNS *const m) mDNSlocal mDNSBool IsAppleNetwork(mDNS *const m)
{ {
@ -7580,9 +7618,11 @@ mDNSexport void mDNSMacOSXNetworkChanged(void)
#if APPLE_OSX_mDNSResponder #if APPLE_OSX_mDNSResponder
#if !TARGET_OS_EMBEDDED #if !TARGET_OS_EMBEDDED
#if MDNSRESPONDER_BTMM_SUPPORT
mDNS_Lock(m); mDNS_Lock(m);
ProcessConndConfigChanges(); ProcessConndConfigChanges();
mDNS_Unlock(m); mDNS_Unlock(m);
#endif
// Scan to find client tunnels whose questions have completed, // Scan to find client tunnels whose questions have completed,
// but whose local inner/outer addresses have changed since the tunnel was set up // but whose local inner/outer addresses have changed since the tunnel was set up
@ -7806,14 +7846,18 @@ mDNSlocal void NetworkChanged(SCDynamicStoreRef store, CFArrayRef changedKeys, v
//mDNSs32 delay = mDNSPlatformOneSecond * 2; // Start off assuming a two-second delay //mDNSs32 delay = mDNSPlatformOneSecond * 2; // Start off assuming a two-second delay
const mDNSs32 delay = (mDNSPlatformOneSecond + 39) / 40; // 25 ms delay const mDNSs32 delay = (mDNSPlatformOneSecond + 39) / 40; // 25 ms delay
int c = CFArrayGetCount(changedKeys); // Count changes const int c = CFArrayGetCount(changedKeys); // Count changes
CFRange range = { 0, c }; CFRange range = { 0, c };
int c_host = (CFArrayContainsValue(changedKeys, range, NetworkChangedKey_Hostnames ) != 0); const int c_host = (CFArrayContainsValue(changedKeys, range, NetworkChangedKey_Hostnames ) != 0);
int c_comp = (CFArrayContainsValue(changedKeys, range, NetworkChangedKey_Computername) != 0); const int c_comp = (CFArrayContainsValue(changedKeys, range, NetworkChangedKey_Computername) != 0);
int c_udns = (CFArrayContainsValue(changedKeys, range, NetworkChangedKey_DNS ) != 0); const int c_udns = (CFArrayContainsValue(changedKeys, range, NetworkChangedKey_DNS ) != 0);
int c_ddns = (CFArrayContainsValue(changedKeys, range, NetworkChangedKey_DynamicDNS ) != 0); const int c_ddns = (CFArrayContainsValue(changedKeys, range, NetworkChangedKey_DynamicDNS ) != 0);
int c_btmm = (CFArrayContainsValue(changedKeys, range, NetworkChangedKey_BackToMyMac ) != 0); #if MDNSRESPONDER_BTMM_SUPPORT
int c_v4ll = ChangedKeysHaveIPv4LL(changedKeys); const int c_btmm = (CFArrayContainsValue(changedKeys, range, NetworkChangedKey_BackToMyMac ) != 0);
#else
const int c_btmm = 0;
#endif
const int c_v4ll = ChangedKeysHaveIPv4LL(changedKeys);
int c_fast = 0; int c_fast = 0;
// Do immediate network changed processing for "p2p*" interfaces and // Do immediate network changed processing for "p2p*" interfaces and
@ -7971,9 +8015,11 @@ mDNSlocal mStatus WatchForNetworkChanges(mDNS *const m)
CFArrayAppendValue(keys, NetworkChangedKey_Computername); CFArrayAppendValue(keys, NetworkChangedKey_Computername);
CFArrayAppendValue(keys, NetworkChangedKey_DNS); CFArrayAppendValue(keys, NetworkChangedKey_DNS);
CFArrayAppendValue(keys, NetworkChangedKey_DynamicDNS); CFArrayAppendValue(keys, NetworkChangedKey_DynamicDNS);
CFArrayAppendValue(keys, NetworkChangedKey_BackToMyMac);
CFArrayAppendValue(keys, NetworkChangedKey_PowerSettings); CFArrayAppendValue(keys, NetworkChangedKey_PowerSettings);
#if MDNSRESPONDER_BTMM_SUPPORT
CFArrayAppendValue(keys, NetworkChangedKey_BackToMyMac);
CFArrayAppendValue(keys, NetworkChangedKey_BTMMConnectivity); CFArrayAppendValue(keys, NetworkChangedKey_BTMMConnectivity);
#endif
CFArrayAppendValue(patterns, pattern1); CFArrayAppendValue(patterns, pattern1);
CFArrayAppendValue(patterns, pattern2); CFArrayAppendValue(patterns, pattern2);
CFArrayAppendValue(patterns, CFSTR("State:/Network/Interface/[^/]+/AirPort")); CFArrayAppendValue(patterns, CFSTR("State:/Network/Interface/[^/]+/AirPort"));
@ -8177,13 +8223,9 @@ mDNSlocal void removeCachedPeerRecords(mDNSu32 ifindex, mDNSAddr *ap, bool purge
// Handle KEV_DL_NODE_PRESENCE event. // Handle KEV_DL_NODE_PRESENCE event.
mDNSlocal void nodePresence(struct kev_dl_node_presence * p) mDNSlocal void nodePresence(struct kev_dl_node_presence * p)
{ {
char buf[INET6_ADDRSTRLEN];
struct opaque_presence_indication *op = (struct opaque_presence_indication *) p->node_service_info; struct opaque_presence_indication *op = (struct opaque_presence_indication *) p->node_service_info;
if (inet_ntop(AF_INET6, & p->sin6_node_address.sin6_addr, buf, sizeof(buf))) LogInfo("nodePresence: IPv6 address: %.16a, SUI %d", p->sin6_node_address.sin6_addr.s6_addr, op->SUI);
LogInfo("nodePresence: IPv6 address: %s, SUI %d", buf, op->SUI);
else
LogInfo("nodePresence: inet_ntop() error");
// AWDL will generate a KEV_DL_NODE_PRESENCE event with SSTH field of // AWDL will generate a KEV_DL_NODE_PRESENCE event with SSTH field of
// all zeroes when a node is present and has no services registered. // all zeroes when a node is present and has no services registered.
@ -8203,17 +8245,11 @@ mDNSlocal void nodePresence(struct kev_dl_node_presence * p)
mDNSlocal void nodeAbsence(struct kev_dl_node_absence * p) mDNSlocal void nodeAbsence(struct kev_dl_node_absence * p)
{ {
mDNSAddr peerAddr; mDNSAddr peerAddr;
char buf[INET6_ADDRSTRLEN];
if (inet_ntop(AF_INET6, & p->sin6_node_address.sin6_addr, buf, sizeof(buf)))
LogInfo("nodeAbsence: IPv6 address: %s", buf);
else
LogInfo("nodeAbsence: inet_ntop() error");
peerAddr.type = mDNSAddrType_IPv6; peerAddr.type = mDNSAddrType_IPv6;
peerAddr.ip.v6 = *(mDNSv6Addr*)&p->sin6_node_address.sin6_addr; peerAddr.ip.v6 = *(mDNSv6Addr*)&p->sin6_node_address.sin6_addr;
LogInfo("nodeAbsence: immediately purge cached records from this peer"); LogInfo("nodeAbsence: immediately purge cached records from %.16a", p->sin6_node_address.sin6_addr.s6_addr);
removeCachedPeerRecords(p->sdl_node_address.sdl_index, & peerAddr, true); removeCachedPeerRecords(p->sdl_node_address.sdl_index, & peerAddr, true);
} }
@ -8367,8 +8403,13 @@ mDNSlocal OSStatus KeychainChanged(SecKeychainEvent keychainEvent, SecKeychainCa
if (!err) if (!err)
{ {
relevant = ((a->attr[0].length == 4 && (!strncasecmp(a->attr[0].data, "ddns", 4) || !strncasecmp(a->attr[0].data, "sndd", 4))) || relevant = ((a->attr[0].length == 4 && (!strncasecmp(a->attr[0].data, "ddns", 4) || !strncasecmp(a->attr[0].data, "sndd", 4))) ||
(a->attr[1].length >= mDNSPlatformStrLen(dnsprefix) && (!strncasecmp(a->attr[1].data, dnsprefix, mDNSPlatformStrLen(dnsprefix)))) || (a->attr[1].length >= mDNSPlatformStrLen(dnsprefix) && (!strncasecmp(a->attr[1].data, dnsprefix, mDNSPlatformStrLen(dnsprefix)))));
(a->attr[1].length >= mDNSPlatformStrLen(btmmprefix) && (!strncasecmp(a->attr[1].data, btmmprefix, mDNSPlatformStrLen(btmmprefix))))); #if MDNSRESPONDER_BTMM_SUPPORT
if (!relevant && (a->attr[1].length >= mDNSPlatformStrLen(btmmprefix)) && !strncasecmp(a->attr[1].data, btmmprefix, mDNSPlatformStrLen(btmmprefix)))
{
relevant = mDNStrue;
}
#endif
SecKeychainItemFreeAttributesAndData(a, NULL); SecKeychainItemFreeAttributesAndData(a, NULL);
} }
} }
@ -9419,36 +9460,13 @@ mDNSlocal void CreatePTRRecord(const domainname *domain)
// intentionally to avoid adding to the complexity of code handling /etc/hosts. // intentionally to avoid adding to the complexity of code handling /etc/hosts.
mDNSlocal void SetupLocalHostRecords(void) mDNSlocal void SetupLocalHostRecords(void)
{ {
char buffer[MAX_REVERSE_MAPPING_NAME];
domainname name; domainname name;
int i;
struct in6_addr addr;
mDNSu8 *ptr = addr.__u6_addr.__u6_addr8;
if (inet_pton(AF_INET, "127.0.0.1", &addr) == 1) MakeDomainNameFromDNSNameString(&name, "1.0.0.127.in-addr.arpa.");
{ CreatePTRRecord(&name);
mDNS_snprintf(buffer, sizeof(buffer), "%d.%d.%d.%d.in-addr.arpa.",
ptr[3], ptr[2], ptr[1], ptr[0]);
MakeDomainNameFromDNSNameString(&name, buffer);
CreatePTRRecord(&name);
}
else LogMsg("SetupLocalHostRecords: ERROR!! inet_pton AF_INET failed");
if (inet_pton(AF_INET6, "::1", &addr) == 1) MakeDomainNameFromDNSNameString(&name, "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa.");
{ CreatePTRRecord(&name);
for (i = 0; i < 16; i++)
{
static const char hexValues[] = "0123456789ABCDEF";
buffer[i * 4 ] = hexValues[ptr[15 - i] & 0x0F];
buffer[i * 4 + 1] = '.';
buffer[i * 4 + 2] = hexValues[ptr[15 - i] >> 4];
buffer[i * 4 + 3] = '.';
}
mDNS_snprintf(&buffer[64], sizeof(buffer)-64, "ip6.arpa.");
MakeDomainNameFromDNSNameString(&name, buffer);
CreatePTRRecord(&name);
}
else LogMsg("SetupLocalHostRecords: ERROR!! inet_pton AF_INET6 failed");
} }
#if APPLE_OSX_mDNSResponder // Don't compile for dnsextd target #if APPLE_OSX_mDNSResponder // Don't compile for dnsextd target
@ -9465,6 +9483,56 @@ mDNSlocal void setSameDomainLabelPointer(void);
// 6) client calls to enumerate domains now go over LocalOnly interface // 6) client calls to enumerate domains now go over LocalOnly interface
// (!!!KRS may add outgoing interface in addition) // (!!!KRS may add outgoing interface in addition)
#if TARGET_OS_IPHONE
mDNSlocal mDNSBool IsAppleInternalBuild(void)
{
return (os_variant_has_internal_diagnostics("com.apple.mDNSResponder") ? mDNStrue : mDNSfalse);
}
mDNSlocal mStatus RegisterLocalOnlyAddressRecord(const domainname *const name, mDNSu16 type, const void *rdata, mDNSu16 rdlength)
{
switch(type)
{
case kDNSType_A:
if (rdlength != 4) return (mStatus_BadParamErr);
break;
case kDNSType_AAAA:
if (rdlength != 16) return (mStatus_BadParamErr);
break;
default:
return (mStatus_BadParamErr);
}
AuthRecord *rr = mallocL("etchosts", sizeof(*rr));
if (!rr) return (mStatus_NoMemoryErr);
mDNSPlatformMemZero(rr, sizeof(*rr));
mDNS_SetupResourceRecord(rr, NULL, mDNSInterface_LocalOnly, type, 1, kDNSRecordTypeKnownUnique, AuthRecordLocalOnly, FreeEtcHosts, NULL);
AssignDomainName(&rr->namestorage, name);
mDNSPlatformMemCopy(rr->resrec.rdata->u.data, rdata, rdlength);
const mStatus err = mDNS_Register_internal(&mDNSStorage, rr);
if (err)
{
LogMsg("RegisterLocalOnlyAddressRecord: mDNS_Register error %d registering %s", err, ARDisplayString(&mDNSStorage, rr));
freeL("etchosts", rr);
}
return (err);
}
mDNSlocal void RegisterLocalOnlyARecord(const domainname *const name, const mDNSv4Addr *const addr)
{
RegisterLocalOnlyAddressRecord(name, kDNSType_A, addr->b, (mDNSu16)sizeof(mDNSv4Addr));
}
mDNSlocal void RegisterLocalOnlyAAAARecord(const domainname *const name, const mDNSv6Addr *const addr)
{
RegisterLocalOnlyAddressRecord(name, kDNSType_AAAA, addr->b, (mDNSu16)sizeof(mDNSv6Addr));
}
#endif
mDNSlocal mStatus mDNSPlatformInit_setup(mDNS *const m) mDNSlocal mStatus mDNSPlatformInit_setup(mDNS *const m)
{ {
mStatus err; mStatus err;
@ -9694,7 +9762,41 @@ mDNSlocal mStatus mDNSPlatformInit_setup(mDNS *const m)
#endif #endif
if (SSLqueue == mDNSNULL) LogMsg("dispatch_queue_create: SSL queue NULL"); if (SSLqueue == mDNSNULL) LogMsg("dispatch_queue_create: SSL queue NULL");
mDNSMacOSXUpdateEtcHosts(m); #if TARGET_OS_IPHONE
// On device OSes (iOS, tvOS, watchOS, etc.), ignore /etc/hosts unless the OS is an internal build. When the /etc/hosts
// file is ignored, LocalOnly auth records will be registered for localhost and broadcasthost addresses contained in the
// standard /etc/hosts file:
//
// 127.0.0.1 localhost
// 255.255.255.255 broadcasthost
// ::1 localhost
if (!IsAppleInternalBuild())
{
const domainname *const localHostName = (const domainname *) "\x9" "localhost";
const domainname *const broadcastHostName = (const domainname *) "\xd" "broadcasthost";
const mDNSv4Addr localHostV4 = { { 127, 0, 0, 1 } };
mDNSv6Addr localHostV6;
// Register localhost 127.0.0.1 A record.
RegisterLocalOnlyARecord(localHostName, &localHostV4);
// Register broadcasthost 255.255.255.255 A record.
RegisterLocalOnlyARecord(broadcastHostName, &onesIPv4Addr);
// Register localhost ::1 AAAA record.
mDNSPlatformMemZero(&localHostV6, sizeof(localHostV6));
localHostV6.b[15] = 1;
RegisterLocalOnlyAAAARecord(localHostName, &localHostV6);
}
else
#endif
{
mDNSMacOSXUpdateEtcHosts(m);
}
SetupLocalHostRecords(); SetupLocalHostRecords();
return(mStatus_NoError); return(mStatus_NoError);

3
mDNSResponder/mDNSMacOSX/mDNSMacOSX.h
View File

@ -153,6 +153,7 @@ struct NetworkInterfaceInfoOSX_struct
int BPF_mcfd; // Socket for our IPv6 ND group membership int BPF_mcfd; // Socket for our IPv6 ND group membership
u_int BPF_len; u_int BPF_len;
mDNSBool isExpensive; // True if this interface has the IFEF_EXPENSIVE flag set. mDNSBool isExpensive; // True if this interface has the IFEF_EXPENSIVE flag set.
mDNSBool isAWDL; // True if this interface has the IFEF_AWDL flag set.
#ifdef MDNSRESPONDER_USES_LIB_DISPATCH_AS_PRIMARY_EVENT_LOOP_MECHANISM #ifdef MDNSRESPONDER_USES_LIB_DISPATCH_AS_PRIMARY_EVENT_LOOP_MECHANISM
dispatch_source_t BPF_source; dispatch_source_t BPF_source;
#else #else
@ -272,7 +273,7 @@ struct CompileTimeAssertionChecks_mDNSMacOSX
// Check our structures are reasonable sizes. Including overly-large buffers, or embedding // Check our structures are reasonable sizes. Including overly-large buffers, or embedding
// other overly-large structures instead of having a pointer to them, can inadvertently // other overly-large structures instead of having a pointer to them, can inadvertently
// cause structure sizes (and therefore memory usage) to balloon unreasonably. // cause structure sizes (and therefore memory usage) to balloon unreasonably.
char sizecheck_NetworkInterfaceInfoOSX[(sizeof(NetworkInterfaceInfoOSX) <= 7464) ? 1 : -1]; char sizecheck_NetworkInterfaceInfoOSX[(sizeof(NetworkInterfaceInfoOSX) <= 8488) ? 1 : -1];
char sizecheck_mDNS_PlatformSupport [(sizeof(mDNS_PlatformSupport) <= 1378) ? 1 : -1]; char sizecheck_mDNS_PlatformSupport [(sizeof(mDNS_PlatformSupport) <= 1378) ? 1 : -1];
}; };

4
mDNSResponder/mDNSMacOSX/mDNSResponder.sb
View File

@ -1,6 +1,6 @@
; -*- Mode: Scheme; tab-width: 4 -*- ; -*- Mode: Scheme; tab-width: 4 -*-
; ;
; Copyright (c) 2012-2015 Apple Inc. All rights reserved. ; Copyright (c) 2012-2018 Apple Inc. All rights reserved.
; ;
; Redistribution and use in source and binary forms, with or without ; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are met: ; modification, are permitted provided that the following conditions are met:
@ -128,7 +128,7 @@
(literal "/private/var/preferences/SystemConfiguration/preferences.plist") (literal "/private/var/preferences/SystemConfiguration/preferences.plist")
(subpath "/System/Library/Preferences/Logging") (subpath "/System/Library/Preferences/Logging")
(subpath "/AppleInternal/Library/Preferences/Logging") (subpath "/AppleInternal/Library/Preferences/Logging")
(subpath "/private/var/preferences/Logging/Subsystems") (subpath "/private/var/preferences/Logging")
(subpath "/private/var/db/timezone") (subpath "/private/var/db/timezone")
(subpath "/Library/Preferences/Logging")) (subpath "/Library/Preferences/Logging"))

156
mDNSResponder/mDNSMacOSX/mDNSResponder.xcodeproj/project.pbxproj
View File

@ -271,8 +271,9 @@
4AAE0C9A0C68EA81003882A5 /* mDNSResponderHelper.8 in CopyFiles */ = {isa = PBXBuildFile; fileRef = 4AAE0C7A0C68E97F003882A5 /* mDNSResponderHelper.8 */; }; 4AAE0C9A0C68EA81003882A5 /* mDNSResponderHelper.8 in CopyFiles */ = {isa = PBXBuildFile; fileRef = 4AAE0C7A0C68E97F003882A5 /* mDNSResponderHelper.8 */; };
4BD2B63A134FE09F002B96D5 /* P2PPacketFilter.c in Sources */ = {isa = PBXBuildFile; fileRef = 4BD2B638134FE09F002B96D5 /* P2PPacketFilter.c */; }; 4BD2B63A134FE09F002B96D5 /* P2PPacketFilter.c in Sources */ = {isa = PBXBuildFile; fileRef = 4BD2B638134FE09F002B96D5 /* P2PPacketFilter.c */; };
4BD2B63B134FE09F002B96D5 /* P2PPacketFilter.h in Headers */ = {isa = PBXBuildFile; fileRef = 4BD2B639134FE09F002B96D5 /* P2PPacketFilter.h */; }; 4BD2B63B134FE09F002B96D5 /* P2PPacketFilter.h in Headers */ = {isa = PBXBuildFile; fileRef = 4BD2B639134FE09F002B96D5 /* P2PPacketFilter.h */; };
729DF4601CD40630005ECF70 /* com.apple.mDNSResponder.plist in CopyFiles */ = {isa = PBXBuildFile; fileRef = 729DF45F1CD40630005ECF70 /* com.apple.mDNSResponder.plist */; };
72FB5467166D5FCA0090B2D9 /* dnsctl.c in Sources */ = {isa = PBXBuildFile; fileRef = 72FB545A166D5F960090B2D9 /* dnsctl.c */; }; 72FB5467166D5FCA0090B2D9 /* dnsctl.c in Sources */ = {isa = PBXBuildFile; fileRef = 72FB545A166D5F960090B2D9 /* dnsctl.c */; };
789036921F7AC1FA0077A962 /* libnetwork.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 789036911F7AC1F90077A962 /* libnetwork.tbd */; };
789036931F7AC2050077A962 /* libnetwork.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 789036911F7AC1F90077A962 /* libnetwork.tbd */; };
8415A6571897109000BDBA26 /* libdns_services.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = 8415A6561897109000BDBA26 /* libdns_services.dylib */; }; 8415A6571897109000BDBA26 /* libdns_services.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = 8415A6561897109000BDBA26 /* libdns_services.dylib */; };
8417375C1B967D37000CD5C2 /* dnsctl_server.c in Sources */ = {isa = PBXBuildFile; fileRef = 8417375A1B967CBE000CD5C2 /* dnsctl_server.c */; }; 8417375C1B967D37000CD5C2 /* dnsctl_server.c in Sources */ = {isa = PBXBuildFile; fileRef = 8417375A1B967CBE000CD5C2 /* dnsctl_server.c */; };
848DA5C7165477E000D2E8B4 /* xpc_services.c in Sources */ = {isa = PBXBuildFile; fileRef = 848DA5C6165477E000D2E8B4 /* xpc_services.c */; }; 848DA5C7165477E000D2E8B4 /* xpc_services.c in Sources */ = {isa = PBXBuildFile; fileRef = 848DA5C6165477E000D2E8B4 /* xpc_services.c */; };
@ -324,8 +325,14 @@
B7E06B0D1DBA9DFE00E4580C /* ClientCommon.c in Sources */ = {isa = PBXBuildFile; fileRef = FF5852100DD27BD300862BDF /* ClientCommon.c */; }; B7E06B0D1DBA9DFE00E4580C /* ClientCommon.c in Sources */ = {isa = PBXBuildFile; fileRef = FF5852100DD27BD300862BDF /* ClientCommon.c */; };
B7E06B0E1DBA9E9700E4580C /* DomainBrowser.strings in Resources */ = {isa = PBXBuildFile; fileRef = B7016F4F1D5D0D1900107E7C /* DomainBrowser.strings */; }; B7E06B0E1DBA9E9700E4580C /* DomainBrowser.strings in Resources */ = {isa = PBXBuildFile; fileRef = B7016F4F1D5D0D1900107E7C /* DomainBrowser.strings */; };
BD03E88D1AD31278005E8A81 /* SymptomReporter.c in Sources */ = {isa = PBXBuildFile; fileRef = BD03E88C1AD31278005E8A81 /* SymptomReporter.c */; }; BD03E88D1AD31278005E8A81 /* SymptomReporter.c in Sources */ = {isa = PBXBuildFile; fileRef = BD03E88C1AD31278005E8A81 /* SymptomReporter.c */; };
BD28AE8F207B892D00F0B257 /* bonjour-mcast-diagnose in Copy diagnose scripts */ = {isa = PBXBuildFile; fileRef = BD28AE8E207B88F600F0B257 /* bonjour-mcast-diagnose */; };
BD41B27D203EBE6100A53629 /* dns_sd.h in Headers */ = {isa = PBXBuildFile; fileRef = FFA572630AF190C20055A0F1 /* dns_sd.h */; settings = {ATTRIBUTES = (Public, ); }; };
BD41F9C4209B60AC0077F8B6 /* libpcap.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = BD41F9C3209B60AC0077F8B6 /* libpcap.tbd */; };
BD691B2A1ED2F47100E6F317 /* DNS64.c in Sources */ = {isa = PBXBuildFile; fileRef = BD691B281ED2F43200E6F317 /* DNS64.c */; }; BD691B2A1ED2F47100E6F317 /* DNS64.c in Sources */ = {isa = PBXBuildFile; fileRef = BD691B281ED2F43200E6F317 /* DNS64.c */; };
BD691B2B1ED2F4AB00E6F317 /* DNS64.h in Headers */ = {isa = PBXBuildFile; fileRef = BD691B291ED2F43200E6F317 /* DNS64.h */; }; BD691B2B1ED2F4AB00E6F317 /* DNS64.h in Headers */ = {isa = PBXBuildFile; fileRef = BD691B291ED2F43200E6F317 /* DNS64.h */; };
BD75E940206ADEF400656ED3 /* com.apple.mDNSResponder.plist in Copy AppleInternal Logging Profile */ = {isa = PBXBuildFile; fileRef = BDB61846206ADDDF00AFF600 /* com.apple.mDNSResponder.plist */; };
BD893CE5206C0D980055F9E7 /* SystemConfiguration.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = BD893CE4206C0D980055F9E7 /* SystemConfiguration.framework */; };
BD893CE7206C0EAF0055F9E7 /* CoreFoundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = BD893CE6206C0EAF0055F9E7 /* CoreFoundation.framework */; };
BD9BA7551EAF91FB00658CCF /* dnssdutil.c in Sources */ = {isa = PBXBuildFile; fileRef = BD9BA7541EAF91E700658CCF /* dnssdutil.c */; }; BD9BA7551EAF91FB00658CCF /* dnssdutil.c in Sources */ = {isa = PBXBuildFile; fileRef = BD9BA7541EAF91E700658CCF /* dnssdutil.c */; };
BD9BA7581EAF929C00658CCF /* CoreUtils.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = BD9BA7571EAF929C00658CCF /* CoreUtils.framework */; }; BD9BA7581EAF929C00658CCF /* CoreUtils.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = BD9BA7571EAF929C00658CCF /* CoreUtils.framework */; };
BDA3F08A1C48DB920054FB4B /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = BDA3F0891C48DB910054FB4B /* Foundation.framework */; }; BDA3F08A1C48DB920054FB4B /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = BDA3F0891C48DB910054FB4B /* Foundation.framework */; };
@ -333,6 +340,12 @@
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@ -2439,19 +2525,6 @@
shellPath = /bin/sh; shellPath = /bin/sh;
shellScript = "if [ -e \"${SDKROOT}/usr/local/include/vproc.h\" -o -e \"${SDKROOT}/usr/include/vproc.h\" ]\nthen\nrm -f \"${CONFIGURATION_TEMP_DIR}/vproc.h\"\nelse\ntouch \"${CONFIGURATION_TEMP_DIR}/vproc.h\"\nfi\n\nipsec=$(ls \"${SDKROOT}/usr/lib/libipsec.*\" 2> /dev/null | wc -l)\nif [ \"$ipsec\" != \"0\" ]\nthen\nrm -f \"${CONFIGURATION_TEMP_DIR}/ipsec_options.h\"\ntouch \"${CONFIGURATION_TEMP_DIR}/ipsec_options.h\"\nrm -f \"${CONFIGURATION_TEMP_DIR}/libipsec.a\"\nelse\necho \"#define MDNS_NO_IPSEC 1\" > ${CONFIGURATION_TEMP_DIR}/ipsec_options.h\ntouch \"${CONFIGURATION_TEMP_DIR}/empty.c\"\nfor i in ${ARCHS}\ndo\nccflags=\"-arch $i $ccflags\"\ndone\ncc ${ccflags} \"${CONFIGURATION_TEMP_DIR}/empty.c\" -c -o \"${CONFIGURATION_TEMP_DIR}/libipsec.a\"\nrm -f \"${CONFIGURATION_TEMP_DIR}/empty.c\"\nfi\n"; shellScript = "if [ -e \"${SDKROOT}/usr/local/include/vproc.h\" -o -e \"${SDKROOT}/usr/include/vproc.h\" ]\nthen\nrm -f \"${CONFIGURATION_TEMP_DIR}/vproc.h\"\nelse\ntouch \"${CONFIGURATION_TEMP_DIR}/vproc.h\"\nfi\n\nipsec=$(ls \"${SDKROOT}/usr/lib/libipsec.*\" 2> /dev/null | wc -l)\nif [ \"$ipsec\" != \"0\" ]\nthen\nrm -f \"${CONFIGURATION_TEMP_DIR}/ipsec_options.h\"\ntouch \"${CONFIGURATION_TEMP_DIR}/ipsec_options.h\"\nrm -f \"${CONFIGURATION_TEMP_DIR}/libipsec.a\"\nelse\necho \"#define MDNS_NO_IPSEC 1\" > ${CONFIGURATION_TEMP_DIR}/ipsec_options.h\ntouch \"${CONFIGURATION_TEMP_DIR}/empty.c\"\nfor i in ${ARCHS}\ndo\nccflags=\"-arch $i $ccflags\"\ndone\ncc ${ccflags} \"${CONFIGURATION_TEMP_DIR}/empty.c\" -c -o \"${CONFIGURATION_TEMP_DIR}/libipsec.a\"\nrm -f \"${CONFIGURATION_TEMP_DIR}/empty.c\"\nfi\n";
}; };
2130256B12400DE600AC839F /* ShellScript */ = {
isa = PBXShellScriptBuildPhase;
buildActionMask = 8;
files = (
);
inputPaths = (
);
outputPaths = (
);
runOnlyForDeploymentPostprocessing = 1;
shellPath = /bin/sh;
shellScript = "DSTROOT=${DSTROOT}\n\nmkdir -p \"$DSTROOT/usr/include\"\nsed 's/\\(^#define _DNS_SD_LIBDISPATCH \\)0$/\\1 1/' \"$SRCROOT/../mDNSShared/dns_sd.h\" > \"$DSTROOT/usr/include/dns_sd.h\"";
};
21DE714D115831CB00DD4BD1 /* ShellScript */ = { 21DE714D115831CB00DD4BD1 /* ShellScript */ = {
isa = PBXShellScriptBuildPhase; isa = PBXShellScriptBuildPhase;
buildActionMask = 8; buildActionMask = 8;
@ -2463,7 +2536,7 @@
); );
runOnlyForDeploymentPostprocessing = 1; runOnlyForDeploymentPostprocessing = 1;
shellPath = "/bin/bash -e -x"; shellPath = "/bin/bash -e -x";
shellScript = "DSTROOT=${DSTROOT}\nmkdir -p \"$DSTROOT/usr/include\"\nsed 's/\\(^#define _DNS_SD_LIBDISPATCH \\)0$/\\1 1/' \"$SRCROOT/../mDNSShared/dns_sd.h\" > \"$DSTROOT/usr/include/dns_sd.h\"\n\nif [[ \"${ACTION}\" == \"installhdrs\" ]]; then\n exit 0\nfi\n\nif [[ \"${PLATFORM_NAME}\" =~ \"simulator\" ]]; then\n ln -s libsystem_dnssd.dylib ${DSTROOT}${INSTALL_PATH}/libsystem_sim_dnssd.dylib\nfi\n"; shellScript = "DSTROOT=${DSTROOT}\n\nif [[ \"${ACTION}\" == \"installhdrs\" ]] || [[ \"${ACTION}\" == \"installapi\" ]]; then\n exit 0\nfi\n\nif [[ \"${PLATFORM_NAME}\" =~ \"simulator\" ]]; then\n ln -s libsystem_dnssd.dylib ${DSTROOT}${INSTALL_PATH}/libsystem_sim_dnssd.dylib\nfi\n";
}; };
37DDE9341BA384000092AC61 /* ShellScript */ = { 37DDE9341BA384000092AC61 /* ShellScript */ = {
isa = PBXShellScriptBuildPhase; isa = PBXShellScriptBuildPhase;
@ -3154,7 +3227,6 @@
GCC_OPTIMIZATION_LEVEL = 0; GCC_OPTIMIZATION_LEVEL = 0;
GCC_PREPROCESSOR_DEFINITIONS = ( GCC_PREPROCESSOR_DEFINITIONS = (
"__APPLE_USE_RFC_3542=1", "__APPLE_USE_RFC_3542=1",
"_DNS_SD_LIBDISPATCH=1",
"APPLE_OSX_mDNSResponder=1", "APPLE_OSX_mDNSResponder=1",
"__MigTypeCheck=1", "__MigTypeCheck=1",
"mDNSResponderVersion=${MVERS}", "mDNSResponderVersion=${MVERS}",
@ -3249,7 +3321,6 @@
"-lMobileGestalt", "-lMobileGestalt",
); );
"OTHER_LDFLAGS[sdk=macosx*][arch=*]" = ( "OTHER_LDFLAGS[sdk=macosx*][arch=*]" = (
"-lAWACS",
"-weak_framework", "-weak_framework",
WebFilterDNS, WebFilterDNS,
"-weak_framework", "-weak_framework",
@ -3339,7 +3410,6 @@
buildSettings = { buildSettings = {
GCC_PREPROCESSOR_DEFINITIONS = ( GCC_PREPROCESSOR_DEFINITIONS = (
"__APPLE_USE_RFC_3542=1", "__APPLE_USE_RFC_3542=1",
"_DNS_SD_LIBDISPATCH=1",
"APPLE_OSX_mDNSResponder=1", "APPLE_OSX_mDNSResponder=1",
"__MigTypeCheck=1", "__MigTypeCheck=1",
"mDNSResponderVersion=${MVERS}", "mDNSResponderVersion=${MVERS}",
@ -3431,6 +3501,7 @@
INSTALLHDRS_SCRIPT_PHASE = YES; INSTALLHDRS_SCRIPT_PHASE = YES;
INSTALL_PATH = /usr/local/lib/system; INSTALL_PATH = /usr/local/lib/system;
PRODUCT_NAME = dns_sd; PRODUCT_NAME = dns_sd;
PUBLIC_HEADERS_FOLDER_PATH = /usr/include;
"SKIP_INSTALL[sdk=iphonesimulator*]" = YES; "SKIP_INSTALL[sdk=iphonesimulator*]" = YES;
}; };
name = Debug; name = Debug;
@ -3474,12 +3545,14 @@
"$(inherited)", "$(inherited)",
"__DARWIN_NON_CANCELABLE=1", "__DARWIN_NON_CANCELABLE=1",
); );
GCC_SYMBOLS_PRIVATE_EXTERN = YES;
HEADER_SEARCH_PATHS = "$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders/"; HEADER_SEARCH_PATHS = "$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders/";
INSTALLHDRS_COPY_PHASE = YES; INSTALLHDRS_COPY_PHASE = YES;
INSTALLHDRS_SCRIPT_PHASE = YES; INSTALLHDRS_SCRIPT_PHASE = YES;
INSTALL_PATH = /usr/lib/system; INSTALL_PATH = /usr/lib/system;
INTERPOSITION_SIM_SUFFIX = ""; INTERPOSITION_SIM_SUFFIX = "";
"INTERPOSITION_SIM_SUFFIX[sdk=iphonesimulator*]" = _sim; "INTERPOSITION_SIM_SUFFIX[sdk=iphonesimulator*]" = _sim;
IS_ZIPPERED = YES;
LINK_WITH_STANDARD_LIBRARIES = NO; LINK_WITH_STANDARD_LIBRARIES = NO;
OTHER_LDFLAGS = ( OTHER_LDFLAGS = (
"-Wl,-umbrella,System", "-Wl,-umbrella,System",
@ -3496,7 +3569,11 @@
"-llaunch", "-llaunch",
"-lsystem_asl", "-lsystem_asl",
); );
OTHER_TAPI_FLAGS = "-umbrella System -extra-public-header $(SRCROOT)/DNSServiceDiscovery.h";
PRODUCT_NAME = libsystem_dnssd; PRODUCT_NAME = libsystem_dnssd;
PUBLIC_HEADERS_FOLDER_PATH = /usr/include;
SUPPORTS_TEXT_BASED_API = YES;
TAPI_VERIFY_MODE = Pedantic;
}; };
name = Debug; name = Debug;
}; };
@ -3509,6 +3586,7 @@
"$(inherited)", "$(inherited)",
"__DARWIN_NON_CANCELABLE=1", "__DARWIN_NON_CANCELABLE=1",
); );
GCC_SYMBOLS_PRIVATE_EXTERN = YES;
HEADER_SEARCH_PATHS = "$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders/"; HEADER_SEARCH_PATHS = "$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders/";
INSTALL_PATH = /usr/lib/system; INSTALL_PATH = /usr/lib/system;
INTERPOSITION_SIM_SUFFIX = ""; INTERPOSITION_SIM_SUFFIX = "";
@ -3529,7 +3607,11 @@
"-llaunch", "-llaunch",
"-lsystem_asl", "-lsystem_asl",
); );
OTHER_TAPI_FLAGS = "-umbrella System -extra-public-header $(SRCROOT)/DNSServiceDiscovery.h";
PRODUCT_NAME = libsystem_dnssd_debug; PRODUCT_NAME = libsystem_dnssd_debug;
PUBLIC_HEADERS_FOLDER_PATH = /usr/include;
SUPPORTS_TEXT_BASED_API = YES;
TAPI_VERIFY_MODE = Pedantic;
}; };
name = Debug; name = Debug;
}; };
@ -3543,6 +3625,7 @@
"$(inherited)", "$(inherited)",
"__DARWIN_NON_CANCELABLE=1", "__DARWIN_NON_CANCELABLE=1",
); );
GCC_SYMBOLS_PRIVATE_EXTERN = YES;
GENERATE_PROFILING_CODE = YES; GENERATE_PROFILING_CODE = YES;
HEADER_SEARCH_PATHS = "$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders/"; HEADER_SEARCH_PATHS = "$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders/";
INSTALL_PATH = /usr/lib/system; INSTALL_PATH = /usr/lib/system;
@ -3564,7 +3647,11 @@
"-llaunch", "-llaunch",
"-lsystem_asl", "-lsystem_asl",
); );
OTHER_TAPI_FLAGS = "-umbrella System -extra-public-header $(SRCROOT)/DNSServiceDiscovery.h";
PRODUCT_NAME = libsystem_dnssd_profile; PRODUCT_NAME = libsystem_dnssd_profile;
PUBLIC_HEADERS_FOLDER_PATH = /usr/include;
SUPPORTS_TEXT_BASED_API = YES;
TAPI_VERIFY_MODE = Pedantic;
}; };
name = Debug; name = Debug;
}; };
@ -3755,6 +3842,7 @@
INSTALLHDRS_SCRIPT_PHASE = YES; INSTALLHDRS_SCRIPT_PHASE = YES;
INSTALL_PATH = /usr/local/lib/system; INSTALL_PATH = /usr/local/lib/system;
PRODUCT_NAME = dns_sd; PRODUCT_NAME = dns_sd;
PUBLIC_HEADERS_FOLDER_PATH = /usr/include;
"SKIP_INSTALL[sdk=iphonesimulator*]" = YES; "SKIP_INSTALL[sdk=iphonesimulator*]" = YES;
}; };
name = Release; name = Release;
@ -3836,7 +3924,6 @@
); );
GCC_PREPROCESSOR_DEFINITIONS = ( GCC_PREPROCESSOR_DEFINITIONS = (
"__APPLE_USE_RFC_3542=1", "__APPLE_USE_RFC_3542=1",
"_DNS_SD_LIBDISPATCH=1",
"APPLE_OSX_mDNSResponder=1", "APPLE_OSX_mDNSResponder=1",
"__MigTypeCheck=1", "__MigTypeCheck=1",
"mDNSResponderVersion=${MVERS}", "mDNSResponderVersion=${MVERS}",
@ -3899,7 +3986,6 @@
GCC_OPTIMIZATION_LEVEL = 0; GCC_OPTIMIZATION_LEVEL = 0;
GCC_PREPROCESSOR_DEFINITIONS = ( GCC_PREPROCESSOR_DEFINITIONS = (
"__APPLE_USE_RFC_3542=1", "__APPLE_USE_RFC_3542=1",
"_DNS_SD_LIBDISPATCH=1",
"APPLE_OSX_mDNSResponder=1", "APPLE_OSX_mDNSResponder=1",
"__MigTypeCheck=1", "__MigTypeCheck=1",
"mDNSResponderVersion=${MVERS}", "mDNSResponderVersion=${MVERS}",
@ -4644,7 +4730,6 @@
DEAD_CODE_STRIPPING = YES; DEAD_CODE_STRIPPING = YES;
GCC_PREPROCESSOR_DEFINITIONS = ( GCC_PREPROCESSOR_DEFINITIONS = (
"__APPLE_USE_RFC_3542=1", "__APPLE_USE_RFC_3542=1",
"_DNS_SD_LIBDISPATCH=1",
"APPLE_OSX_mDNSResponder=1", "APPLE_OSX_mDNSResponder=1",
"__MigTypeCheck=1", "__MigTypeCheck=1",
"mDNSResponderVersion=${MVERS}", "mDNSResponderVersion=${MVERS}",
@ -4715,7 +4800,6 @@
"-lMobileGestalt", "-lMobileGestalt",
); );
"OTHER_LDFLAGS[sdk=macosx*][arch=*]" = ( "OTHER_LDFLAGS[sdk=macosx*][arch=*]" = (
"-lAWACS",
"-weak_framework", "-weak_framework",
WebFilterDNS, WebFilterDNS,
"-weak_framework", "-weak_framework",
@ -4807,6 +4891,7 @@
"$(inherited)", "$(inherited)",
"__DARWIN_NON_CANCELABLE=1", "__DARWIN_NON_CANCELABLE=1",
); );
GCC_SYMBOLS_PRIVATE_EXTERN = YES;
HEADER_SEARCH_PATHS = "$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders/"; HEADER_SEARCH_PATHS = "$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders/";
INSTALL_PATH = /usr/lib/system; INSTALL_PATH = /usr/lib/system;
INTERPOSITION_SIM_SUFFIX = ""; INTERPOSITION_SIM_SUFFIX = "";
@ -4827,7 +4912,11 @@
"-llaunch", "-llaunch",
"-lsystem_asl", "-lsystem_asl",
); );
OTHER_TAPI_FLAGS = "-umbrella System -extra-public-header $(SRCROOT)/DNSServiceDiscovery.h";
PRODUCT_NAME = libsystem_dnssd_debug; PRODUCT_NAME = libsystem_dnssd_debug;
PUBLIC_HEADERS_FOLDER_PATH = /usr/include;
SUPPORTS_TEXT_BASED_API = YES;
TAPI_VERIFY_MODE = Pedantic;
}; };
name = Release; name = Release;
}; };
@ -4841,6 +4930,7 @@
"$(inherited)", "$(inherited)",
"__DARWIN_NON_CANCELABLE=1", "__DARWIN_NON_CANCELABLE=1",
); );
GCC_SYMBOLS_PRIVATE_EXTERN = YES;
GENERATE_PROFILING_CODE = YES; GENERATE_PROFILING_CODE = YES;
HEADER_SEARCH_PATHS = "$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders/"; HEADER_SEARCH_PATHS = "$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders/";
INSTALL_PATH = /usr/lib/system; INSTALL_PATH = /usr/lib/system;
@ -4862,7 +4952,11 @@
"-llaunch", "-llaunch",
"-lsystem_asl", "-lsystem_asl",
); );
OTHER_TAPI_FLAGS = "-umbrella System -extra-public-header $(SRCROOT)/DNSServiceDiscovery.h";
PRODUCT_NAME = libsystem_dnssd_profile; PRODUCT_NAME = libsystem_dnssd_profile;
PUBLIC_HEADERS_FOLDER_PATH = /usr/include;
SUPPORTS_TEXT_BASED_API = YES;
TAPI_VERIFY_MODE = Pedantic;
}; };
name = Release; name = Release;
}; };
@ -4889,12 +4983,14 @@
"$(inherited)", "$(inherited)",
"__DARWIN_NON_CANCELABLE=1", "__DARWIN_NON_CANCELABLE=1",
); );
GCC_SYMBOLS_PRIVATE_EXTERN = YES;
HEADER_SEARCH_PATHS = "$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders/"; HEADER_SEARCH_PATHS = "$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders/";
INSTALLHDRS_COPY_PHASE = YES; INSTALLHDRS_COPY_PHASE = YES;
INSTALLHDRS_SCRIPT_PHASE = YES; INSTALLHDRS_SCRIPT_PHASE = YES;
INSTALL_PATH = /usr/lib/system; INSTALL_PATH = /usr/lib/system;
INTERPOSITION_SIM_SUFFIX = ""; INTERPOSITION_SIM_SUFFIX = "";
"INTERPOSITION_SIM_SUFFIX[sdk=iphonesimulator*]" = _sim; "INTERPOSITION_SIM_SUFFIX[sdk=iphonesimulator*]" = _sim;
IS_ZIPPERED = YES;
LINK_WITH_STANDARD_LIBRARIES = NO; LINK_WITH_STANDARD_LIBRARIES = NO;
OTHER_LDFLAGS = ( OTHER_LDFLAGS = (
"-Wl,-umbrella,System", "-Wl,-umbrella,System",
@ -4911,7 +5007,11 @@
"-llaunch", "-llaunch",
"-lsystem_asl", "-lsystem_asl",
); );
OTHER_TAPI_FLAGS = "-umbrella System -extra-public-header $(SRCROOT)/DNSServiceDiscovery.h";
PRODUCT_NAME = libsystem_dnssd; PRODUCT_NAME = libsystem_dnssd;
PUBLIC_HEADERS_FOLDER_PATH = /usr/include;
SUPPORTS_TEXT_BASED_API = YES;
TAPI_VERIFY_MODE = Pedantic;
}; };
name = Release; name = Release;
}; };

8
mDNSResponder/mDNSMacOSX/uDNSPathEvalulation.c
View File

@ -17,7 +17,13 @@
#include "mDNSMacOSX.h" #include "mDNSMacOSX.h"
#include <libproc.h> #include <libproc.h>
#include <network/private.h>
#if __has_include(<nw/private.h>)
#include <nw/private.h>
#else
#include <network/private.h>
#endif
#include "dns_sd_internal.h" #include "dns_sd_internal.h"
//Gets the DNSPolicy from NW PATH EVALUATOR //Gets the DNSPolicy from NW PATH EVALUATOR

2
mDNSResponder/mDNSPosix/ProxyResponder.c
View File

@ -155,7 +155,7 @@ mDNSlocal void RegisterService(mDNS *m, ServiceRecordSet *recordset,
mDNS_RegisterService(m, recordset, mDNS_RegisterService(m, recordset,
&n, &t, &d, // Name, type, domain &n, &t, &d, // Name, type, domain
host, mDNSOpaque16fromIntVal(PortAsNumber), host, mDNSOpaque16fromIntVal(PortAsNumber),
txtbuffer, bptr-txtbuffer, // TXT data, length mDNSNULL, txtbuffer, bptr-txtbuffer, // TXT data, length
mDNSNULL, 0, // Subtypes mDNSNULL, 0, // Subtypes
mDNSInterface_Any, // Interface ID mDNSInterface_Any, // Interface ID
ServiceCallback, mDNSNULL, 0); // Callback, context, flags ServiceCallback, mDNSNULL, 0); // Callback, context, flags

2
mDNSResponder/mDNSPosix/Responder.c
View File

@ -439,7 +439,7 @@ static mStatus RegisterOneService(const char * richTextName,
status = mDNS_RegisterService(&mDNSStorage, &thisServ->coreServ, status = mDNS_RegisterService(&mDNSStorage, &thisServ->coreServ,
&name, &type, &domain, // Name, type, domain &name, &type, &domain, // Name, type, domain
NULL, mDNSOpaque16fromIntVal(portNumber), NULL, mDNSOpaque16fromIntVal(portNumber),
text, textLen, // TXT data, length NULL, text, textLen, // TXT data, length
NULL, 0, // Subtypes NULL, 0, // Subtypes
mDNSInterface_Any, // Interface ID mDNSInterface_Any, // Interface ID
RegistrationCallback, thisServ, 0); // Callback, context, flags RegistrationCallback, thisServ, 0); // Callback, context, flags

58
mDNSResponder/mDNSPosix/mDNSUNP.c
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2002-2004 Apple Computer, Inc. All rights reserved. * Copyright (c) 2002-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -80,40 +80,56 @@ void plen_to_mask(int plen, char *addr) {
} }
/* Gets IPv6 interface information from the /proc filesystem in linux*/ /* Gets IPv6 interface information from the /proc filesystem in linux*/
struct ifi_info *get_ifi_info_linuxv6(int family, int doaliases) struct ifi_info *get_ifi_info_linuxv6(int doaliases)
{ {
struct ifi_info *ifi, *ifihead, **ifipnext, *ifipold, **ifiptr; struct ifi_info *ifi, *ifihead, **ifipnext, *ifipold, **ifiptr;
FILE *fp = NULL; FILE *fp = NULL;
char addr[8][5]; int i, nitems, flags, index, plen, scope;
int flags, myflags, index, plen, scope;
char ifname[9], lastname[IFNAMSIZ];
char addr6[32+7+1]; /* don't forget the seven ':' */
struct addrinfo hints, *res0; struct addrinfo hints, *res0;
int err; int err;
int sockfd = -1; int sockfd = -1;
struct ifreq ifr; struct ifreq ifr;
char ifnameFmt[16], addrStr[32 + 7 + 1], ifname[IFNAMSIZ], lastname[IFNAMSIZ];
res0=NULL; res0=NULL;
ifihead = NULL; ifihead = NULL;
ifipnext = &ifihead; ifipnext = &ifihead;
lastname[0] = 0;
if ((fp = fopen(PROC_IFINET6_PATH, "r")) != NULL) { if ((fp = fopen(PROC_IFINET6_PATH, "r")) != NULL) {
sockfd = socket(AF_INET6, SOCK_DGRAM, 0); sockfd = socket(AF_INET6, SOCK_DGRAM, 0);
if (sockfd < 0) { if (sockfd < 0) {
goto gotError; goto gotError;
} }
while (fscanf(fp,
"%4s%4s%4s%4s%4s%4s%4s%4s %02x %02x %02x %02x %8s\n",
addr[0],addr[1],addr[2],addr[3],
addr[4],addr[5],addr[6],addr[7],
&index, &plen, &scope, &flags, ifname) != EOF) {
myflags = 0; // Parse /proc/net/if_inet6 according to <https://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/ch11s04.html>.
if (strncmp(lastname, ifname, IFNAMSIZ) == 0) {
// Create a string specifier with a width of IFNAMSIZ - 1 ("%<IFNAMSIZ - 1>s") to scan the interface name. The
// reason why we don't just use the string-ified macro expansion of IFNAMSIZ for the width is because the width
// needs to be a decimal string and there's no guarantee that IFNAMSIZ will be defined as a decimal integer. For
// example, it could be defined in hexadecimal or as an arithmetic expression.
snprintf(ifnameFmt, sizeof(ifnameFmt), "%%%ds", IFNAMSIZ - 1);
// Write the seven IPv6 address string colons and NUL terminator, i.e., "xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx".
// The remaining 32 IPv6 address characters come from /proc/net/if_inet6.
for (i = 4; i < 39; i += 5) addrStr[i] = ':';
addrStr[39] = '\0';
lastname[0] = '\0';
for (;;) {
nitems = fscanf(fp, " %4c%4c%4c%4c%4c%4c%4c%4c %x %x %x %x",
&addrStr[0], &addrStr[5], &addrStr[10], &addrStr[15],
&addrStr[20], &addrStr[25], &addrStr[30], &addrStr[35],
&index, &plen, &scope, &flags);
if (nitems != 12) break;
nitems = fscanf(fp, ifnameFmt, ifname);
if (nitems != 1) break;
if (strcmp(lastname, ifname) == 0) {
if (doaliases == 0) if (doaliases == 0)
continue; /* already processed this interface */ continue; /* already processed this interface */
myflags = IFI_ALIAS;
} }
memcpy(lastname, ifname, IFNAMSIZ); memcpy(lastname, ifname, IFNAMSIZ);
ifi = (struct ifi_info*)calloc(1, sizeof(struct ifi_info)); ifi = (struct ifi_info*)calloc(1, sizeof(struct ifi_info));
@ -126,15 +142,11 @@ struct ifi_info *get_ifi_info_linuxv6(int family, int doaliases)
*ifipnext = ifi; /* prev points to this new one */ *ifipnext = ifi; /* prev points to this new one */
ifipnext = &ifi->ifi_next; /* pointer to next one goes here */ ifipnext = &ifi->ifi_next; /* pointer to next one goes here */
sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s",
addr[0],addr[1],addr[2],addr[3],
addr[4],addr[5],addr[6],addr[7]);
/* Add address of the interface */ /* Add address of the interface */
memset(&hints, 0, sizeof(hints)); memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET6; hints.ai_family = AF_INET6;
hints.ai_flags = AI_NUMERICHOST; hints.ai_flags = AI_NUMERICHOST;
err = getaddrinfo(addr6, NULL, &hints, &res0); err = getaddrinfo(addrStr, NULL, &hints, &res0);
if (err) { if (err) {
goto gotError; goto gotError;
} }
@ -152,9 +164,9 @@ struct ifi_info *get_ifi_info_linuxv6(int family, int doaliases)
goto gotError; goto gotError;
} }
((struct sockaddr_in6 *)ifi->ifi_netmask)->sin6_family=family; ((struct sockaddr_in6 *)ifi->ifi_netmask)->sin6_family=AF_INET6;
((struct sockaddr_in6 *)ifi->ifi_netmask)->sin6_scope_id=scope; ((struct sockaddr_in6 *)ifi->ifi_netmask)->sin6_scope_id=scope;
inet_pton(family, ipv6addr, &((struct sockaddr_in6 *)ifi->ifi_netmask)->sin6_addr); inet_pton(AF_INET6, ipv6addr, &((struct sockaddr_in6 *)ifi->ifi_netmask)->sin6_addr);
/* Add interface name */ /* Add interface name */
memcpy(ifi->ifi_name, ifname, IFI_NAME); memcpy(ifi->ifi_name, ifname, IFI_NAME);
@ -228,7 +240,7 @@ struct ifi_info *get_ifi_info(int family, int doaliases)
#endif #endif
#if defined(AF_INET6) && HAVE_IPV6 && HAVE_LINUX #if defined(AF_INET6) && HAVE_IPV6 && HAVE_LINUX
if (family == AF_INET6) return get_ifi_info_linuxv6(family, doaliases); if (family == AF_INET6) return get_ifi_info_linuxv6(doaliases);
#endif #endif
sockfd = -1; sockfd = -1;

8
mDNSResponder/mDNSPosix/mDNSUNP.h
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2002-2004 Apple Computer, Inc. All rights reserved. * Copyright (c) 2002-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -62,8 +62,8 @@ typedef unsigned int socklen_t;
#define GET_SA_LEN(X) (((struct sockaddr*)&(X))->sa_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr)) #define GET_SA_LEN(X) (((struct sockaddr*)&(X))->sa_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr))
#endif #endif
#define IFI_NAME 16 /* same as IFNAMSIZ in <net/if.h> */ #define IFI_NAME IFNAMSIZ /* same as IFNAMSIZ in <net/if.h> */
#define IFI_HADDR 8 /* allow for 64-bit EUI-64 in future */ #define IFI_HADDR 8 /* allow for 64-bit EUI-64 in future */
// Renamed from my_in_pktinfo because in_pktinfo is used by Linux. // Renamed from my_in_pktinfo because in_pktinfo is used by Linux.
@ -98,7 +98,7 @@ struct ifi_info {
#if defined(AF_INET6) && HAVE_IPV6 && HAVE_LINUX #if defined(AF_INET6) && HAVE_IPV6 && HAVE_LINUX
#define PROC_IFINET6_PATH "/proc/net/if_inet6" #define PROC_IFINET6_PATH "/proc/net/if_inet6"
extern struct ifi_info *get_ifi_info_linuxv6(int family, int doaliases); extern struct ifi_info *get_ifi_info_linuxv6(int doaliases);
#endif #endif
#if defined(AF_INET6) && HAVE_IPV6 #if defined(AF_INET6) && HAVE_IPV6

62
mDNSResponder/mDNSShared/dns_sd.h
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2003-2015 Apple Inc. All rights reserved. * Copyright (c) 2003-2018 Apple Inc. All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met: * modification, are permitted provided that the following conditions are met:
@ -66,7 +66,7 @@
*/ */
#ifndef _DNS_SD_H #ifndef _DNS_SD_H
#define _DNS_SD_H 8787002 #define _DNS_SD_H 8800035
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { extern "C" {
@ -75,9 +75,11 @@ extern "C" {
/* Set to 1 if libdispatch is supported /* Set to 1 if libdispatch is supported
* Note: May also be set by project and/or Makefile * Note: May also be set by project and/or Makefile
*/ */
#ifndef _DNS_SD_LIBDISPATCH #if defined(__APPLE__)
#define _DNS_SD_LIBDISPATCH 1
#else
#define _DNS_SD_LIBDISPATCH 0 #define _DNS_SD_LIBDISPATCH 0
#endif /* ndef _DNS_SD_LIBDISPATCH */ #endif
/* standard calling convention under Win32 is __stdcall */ /* standard calling convention under Win32 is __stdcall */
/* Note: When compiling Intel EFI (Extensible Firmware Interface) under MS Visual Studio, the */ /* Note: When compiling Intel EFI (Extensible Firmware Interface) under MS Visual Studio, the */
@ -88,6 +90,12 @@ extern "C" {
#define DNSSD_API #define DNSSD_API
#endif #endif
#if (defined(__GNUC__) && (__GNUC__ >= 4))
#define DNSSD_EXPORT __attribute__((visibility("default")))
#else
#define DNSSD_EXPORT
#endif
#if defined(_WIN32) #if defined(_WIN32)
#include <winsock2.h> #include <winsock2.h>
typedef SOCKET dnssd_sock_t; typedef SOCKET dnssd_sock_t;
@ -526,11 +534,25 @@ enum
* This flag is private and should not be used. * This flag is private and should not be used.
*/ */
kDNSServiceFlagsPrivateFour = 0x40000000 kDNSServiceFlagsPrivateFour = 0x40000000,
/* /*
* This flag is private and should not be used. * This flag is private and should not be used.
*/ */
kDNSServiceFlagsAllowExpiredAnswers = 0x80000000,
/*
* When kDNSServiceFlagsAllowExpiredAnswers is passed to DNSServiceQueryRecord or DNSServiceGetAddrInfo,
* if there are matching expired records still in the cache, then they are immediately returned to the
* client, and in parallel a network query for that name is issued. All returned records from the query will
* remain in the cache after expiration.
*/
kDNSServiceFlagsExpiredAnswer = 0x80000000
/*
* When kDNSServiceFlagsAllowExpiredAnswers is passed to DNSServiceQueryRecord or DNSServiceGetAddrInfo,
* an expired answer will have this flag set.
*/
}; };
#define kDNSServiceOutputFlags (kDNSServiceFlagsValidate | kDNSServiceFlagsValidateOptional | kDNSServiceFlagsMoreComing | kDNSServiceFlagsAdd | kDNSServiceFlagsDefault) #define kDNSServiceOutputFlags (kDNSServiceFlagsValidate | kDNSServiceFlagsValidateOptional | kDNSServiceFlagsMoreComing | kDNSServiceFlagsAdd | kDNSServiceFlagsDefault)
@ -871,6 +893,7 @@ typedef int32_t DNSServiceErrorType;
* if the daemon (or "system service" on Windows) is not running. * if the daemon (or "system service" on Windows) is not running.
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceGetProperty DNSServiceErrorType DNSSD_API DNSServiceGetProperty
( (
const char *property, /* Requested property (i.e. kDNSServiceProperty_DaemonVersion) */ const char *property, /* Requested property (i.e. kDNSServiceProperty_DaemonVersion) */
@ -930,6 +953,7 @@ DNSServiceErrorType DNSSD_API DNSServiceGetProperty
* error. * error.
*/ */
DNSSD_EXPORT
dnssd_sock_t DNSSD_API DNSServiceRefSockFD(DNSServiceRef sdRef); dnssd_sock_t DNSSD_API DNSServiceRefSockFD(DNSServiceRef sdRef);
@ -951,6 +975,7 @@ dnssd_sock_t DNSSD_API DNSServiceRefSockFD(DNSServiceRef sdRef);
* an error code indicating the specific failure that occurred. * an error code indicating the specific failure that occurred.
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceProcessResult(DNSServiceRef sdRef); DNSServiceErrorType DNSSD_API DNSServiceProcessResult(DNSServiceRef sdRef);
@ -978,6 +1003,7 @@ DNSServiceErrorType DNSSD_API DNSServiceProcessResult(DNSServiceRef sdRef);
* *
*/ */
DNSSD_EXPORT
void DNSSD_API DNSServiceRefDeallocate(DNSServiceRef sdRef); void DNSSD_API DNSServiceRefDeallocate(DNSServiceRef sdRef);
@ -1062,6 +1088,7 @@ typedef void (DNSSD_API *DNSServiceDomainEnumReply)
* is not initialized). * is not initialized).
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceEnumerateDomains DNSServiceErrorType DNSSD_API DNSServiceEnumerateDomains
( (
DNSServiceRef *sdRef, DNSServiceRef *sdRef,
@ -1252,6 +1279,7 @@ typedef void (DNSSD_API *DNSServiceRegisterReply)
* is not initialized). * is not initialized).
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceRegister DNSServiceErrorType DNSSD_API DNSServiceRegister
( (
DNSServiceRef *sdRef, DNSServiceRef *sdRef,
@ -1307,6 +1335,7 @@ DNSServiceErrorType DNSSD_API DNSServiceRegister
* error code indicating the error that occurred (the RecordRef is not initialized). * error code indicating the error that occurred (the RecordRef is not initialized).
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceAddRecord DNSServiceErrorType DNSSD_API DNSServiceAddRecord
( (
DNSServiceRef sdRef, DNSServiceRef sdRef,
@ -1348,6 +1377,7 @@ DNSServiceErrorType DNSSD_API DNSServiceAddRecord
* error code indicating the error that occurred. * error code indicating the error that occurred.
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceUpdateRecord DNSServiceErrorType DNSSD_API DNSServiceUpdateRecord
( (
DNSServiceRef sdRef, DNSServiceRef sdRef,
@ -1380,6 +1410,7 @@ DNSServiceErrorType DNSSD_API DNSServiceUpdateRecord
* error code indicating the error that occurred. * error code indicating the error that occurred.
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceRemoveRecord DNSServiceErrorType DNSSD_API DNSServiceRemoveRecord
( (
DNSServiceRef sdRef, DNSServiceRef sdRef,
@ -1485,6 +1516,7 @@ typedef void (DNSSD_API *DNSServiceBrowseReply)
* is not initialized). * is not initialized).
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceBrowse DNSServiceErrorType DNSSD_API DNSServiceBrowse
( (
DNSServiceRef *sdRef, DNSServiceRef *sdRef,
@ -1613,6 +1645,7 @@ typedef void (DNSSD_API *DNSServiceResolveReply)
* is not initialized). * is not initialized).
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceResolve DNSServiceErrorType DNSSD_API DNSServiceResolve
( (
DNSServiceRef *sdRef, DNSServiceRef *sdRef,
@ -1730,6 +1763,7 @@ typedef void (DNSSD_API *DNSServiceQueryRecordReply)
* is not initialized). * is not initialized).
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceQueryRecord DNSServiceErrorType DNSSD_API DNSServiceQueryRecord
( (
DNSServiceRef *sdRef, DNSServiceRef *sdRef,
@ -1834,6 +1868,7 @@ typedef void (DNSSD_API *DNSServiceGetAddrInfoReply)
* the error that occurred. * the error that occurred.
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceGetAddrInfo DNSServiceErrorType DNSSD_API DNSServiceGetAddrInfo
( (
DNSServiceRef *sdRef, DNSServiceRef *sdRef,
@ -1870,6 +1905,7 @@ DNSServiceErrorType DNSSD_API DNSServiceGetAddrInfo
* case the DNSServiceRef is not initialized). * case the DNSServiceRef is not initialized).
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceCreateConnection(DNSServiceRef *sdRef); DNSServiceErrorType DNSSD_API DNSServiceCreateConnection(DNSServiceRef *sdRef);
/* DNSServiceRegisterRecord /* DNSServiceRegisterRecord
@ -1952,6 +1988,7 @@ typedef void (DNSSD_API *DNSServiceRegisterRecordReply)
* not initialized). * not initialized).
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceRegisterRecord DNSServiceErrorType DNSSD_API DNSServiceRegisterRecord
( (
DNSServiceRef sdRef, DNSServiceRef sdRef,
@ -2001,6 +2038,7 @@ DNSServiceErrorType DNSSD_API DNSServiceRegisterRecord
* *
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceReconfirmRecord DNSServiceErrorType DNSSD_API DNSServiceReconfirmRecord
( (
DNSServiceFlags flags, DNSServiceFlags flags,
@ -2184,6 +2222,7 @@ typedef void (DNSSD_API *DNSServiceNATPortMappingReply)
* display) then pass zero for protocol, internalPort, externalPort and ttl. * display) then pass zero for protocol, internalPort, externalPort and ttl.
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceNATPortMappingCreate DNSServiceErrorType DNSSD_API DNSServiceNATPortMappingCreate
( (
DNSServiceRef *sdRef, DNSServiceRef *sdRef,
@ -2230,6 +2269,7 @@ DNSServiceErrorType DNSSD_API DNSServiceNATPortMappingCreate
* *
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceConstructFullName DNSServiceErrorType DNSSD_API DNSServiceConstructFullName
( (
char * const fullName, char * const fullName,
@ -2310,6 +2350,7 @@ typedef union _TXTRecordRef_t { char PrivateData[16]; char *ForceNaturalAlignmen
* the TXTRecordRef. * the TXTRecordRef.
*/ */
DNSSD_EXPORT
void DNSSD_API TXTRecordCreate void DNSSD_API TXTRecordCreate
( (
TXTRecordRef *txtRecord, TXTRecordRef *txtRecord,
@ -2328,6 +2369,7 @@ void DNSSD_API TXTRecordCreate
* *
*/ */
DNSSD_EXPORT
void DNSSD_API TXTRecordDeallocate void DNSSD_API TXTRecordDeallocate
( (
TXTRecordRef *txtRecord TXTRecordRef *txtRecord
@ -2371,6 +2413,7 @@ void DNSSD_API TXTRecordDeallocate
* exceed the available storage. * exceed the available storage.
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API TXTRecordSetValue DNSServiceErrorType DNSSD_API TXTRecordSetValue
( (
TXTRecordRef *txtRecord, TXTRecordRef *txtRecord,
@ -2394,6 +2437,7 @@ DNSServiceErrorType DNSSD_API TXTRecordSetValue
* exist in the TXTRecordRef. * exist in the TXTRecordRef.
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API TXTRecordRemoveValue DNSServiceErrorType DNSSD_API TXTRecordRemoveValue
( (
TXTRecordRef *txtRecord, TXTRecordRef *txtRecord,
@ -2413,6 +2457,7 @@ DNSServiceErrorType DNSSD_API TXTRecordRemoveValue
* Returns 0 if the TXTRecordRef is empty. * Returns 0 if the TXTRecordRef is empty.
*/ */
DNSSD_EXPORT
uint16_t DNSSD_API TXTRecordGetLength uint16_t DNSSD_API TXTRecordGetLength
( (
const TXTRecordRef *txtRecord const TXTRecordRef *txtRecord
@ -2430,6 +2475,7 @@ uint16_t DNSSD_API TXTRecordGetLength
* to DNSServiceUpdateRecord(). * to DNSServiceUpdateRecord().
*/ */
DNSSD_EXPORT
const void * DNSSD_API TXTRecordGetBytesPtr const void * DNSSD_API TXTRecordGetBytesPtr
( (
const TXTRecordRef *txtRecord const TXTRecordRef *txtRecord
@ -2484,6 +2530,7 @@ const void * DNSSD_API TXTRecordGetBytesPtr
* Otherwise, it returns 0. * Otherwise, it returns 0.
*/ */
DNSSD_EXPORT
int DNSSD_API TXTRecordContainsKey int DNSSD_API TXTRecordContainsKey
( (
uint16_t txtLen, uint16_t txtLen,
@ -2513,6 +2560,7 @@ int DNSSD_API TXTRecordContainsKey
* For non-empty value, valueLen will be length of value data. * For non-empty value, valueLen will be length of value data.
*/ */
DNSSD_EXPORT
const void * DNSSD_API TXTRecordGetValuePtr const void * DNSSD_API TXTRecordGetValuePtr
( (
uint16_t txtLen, uint16_t txtLen,
@ -2535,6 +2583,7 @@ const void * DNSSD_API TXTRecordGetValuePtr
* *
*/ */
DNSSD_EXPORT
uint16_t DNSSD_API TXTRecordGetCount uint16_t DNSSD_API TXTRecordGetCount
( (
uint16_t txtLen, uint16_t txtLen,
@ -2580,6 +2629,7 @@ uint16_t DNSSD_API TXTRecordGetCount
* TXTRecordGetCount()-1. * TXTRecordGetCount()-1.
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API TXTRecordGetItemAtIndex DNSServiceErrorType DNSSD_API TXTRecordGetItemAtIndex
( (
uint16_t txtLen, uint16_t txtLen,
@ -2632,6 +2682,7 @@ DNSServiceErrorType DNSSD_API TXTRecordGetItemAtIndex
* queue param is invalid * queue param is invalid
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceSetDispatchQueue DNSServiceErrorType DNSSD_API DNSServiceSetDispatchQueue
( (
DNSServiceRef service, DNSServiceRef service,
@ -2646,6 +2697,7 @@ typedef void (DNSSD_API *DNSServiceSleepKeepaliveReply)
DNSServiceErrorType errorCode, DNSServiceErrorType errorCode,
void *context void *context
); );
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceSleepKeepalive DNSServiceErrorType DNSSD_API DNSServiceSleepKeepalive
( (
DNSServiceRef *sdRef, DNSServiceRef *sdRef,

8
mDNSResponder/mDNSShared/dns_sd_private.h
View File

@ -1,11 +1,12 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2015 Apple Inc. All rights reserved. * Copyright (c) 2015-2018 Apple Inc. All rights reserved.
*/ */
#ifndef _DNS_SD_PRIVATE_H #ifndef _DNS_SD_PRIVATE_H
#define _DNS_SD_PRIVATE_H #define _DNS_SD_PRIVATE_H
#include <dns_sd.h>
// Private flags (kDNSServiceFlagsPrivateOne, kDNSServiceFlagsPrivateTwo, kDNSServiceFlagsPrivateThree, kDNSServiceFlagsPrivateFour) from dns_sd.h // Private flags (kDNSServiceFlagsPrivateOne, kDNSServiceFlagsPrivateTwo, kDNSServiceFlagsPrivateThree, kDNSServiceFlagsPrivateFour) from dns_sd.h
enum enum
@ -58,6 +59,7 @@ enum
* returned to indicate that the calling process does not have entitlements * returned to indicate that the calling process does not have entitlements
* to use this API. * to use this API.
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceCreateDelegateConnection(DNSServiceRef *sdRef, int32_t pid, uuid_t uuid); DNSServiceErrorType DNSSD_API DNSServiceCreateDelegateConnection(DNSServiceRef *sdRef, int32_t pid, uuid_t uuid);
#endif #endif
@ -77,12 +79,16 @@ DNSServiceErrorType DNSSD_API DNSServiceCreateDelegateConnection(DNSServiceRef *
* if the daemon is not running. The value of the pid is undefined if the return * if the daemon is not running. The value of the pid is undefined if the return
* value has error. * value has error.
*/ */
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceGetPID DNSServiceErrorType DNSSD_API DNSServiceGetPID
( (
uint16_t srcport, uint16_t srcport,
int32_t *pid int32_t *pid
); );
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceSetDefaultDomainForUser(DNSServiceFlags flags, const char *domain);
#define kDNSServiceCompPrivateDNS "PrivateDNS" #define kDNSServiceCompPrivateDNS "PrivateDNS"
#define kDNSServiceCompMulticastDNS "MulticastDNS" #define kDNSServiceCompMulticastDNS "MulticastDNS"

16
mDNSResponder/mDNSShared/dnssd_clientlib.c
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2004-2011 Apple Inc. All rights reserved. * Copyright (c) 2004-2018 Apple Inc. All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met: * modification, are permitted provided that the following conditions are met:
@ -31,10 +31,6 @@
#include "dns_sd.h" #include "dns_sd.h"
#if MDNS_BUILDINGSHAREDLIBRARY || MDNS_BUILDINGSTUBLIBRARY
#pragma export on
#endif
#if defined(_WIN32) #if defined(_WIN32)
// disable warning "conversion from <data> to uint16_t" // disable warning "conversion from <data> to uint16_t"
#pragma warning(disable:4244) #pragma warning(disable:4244)
@ -361,6 +357,14 @@ DNSServiceErrorType DNSSD_API TXTRecordGetItemAtIndex
#define STRINGIFY_ARGUMENT_WITHOUT_EXPANSION(s) # s #define STRINGIFY_ARGUMENT_WITHOUT_EXPANSION(s) # s
#define STRINGIFY(s) STRINGIFY_ARGUMENT_WITHOUT_EXPANSION(s) #define STRINGIFY(s) STRINGIFY_ARGUMENT_WITHOUT_EXPANSION(s)
// The "used" variable attribute prevents a non-exported variable from being stripped, even if its visibility is hidden,
// e.g., when compiling with -fvisibility=hidden.
#if defined(__GNUC__)
#define DNSSD_USED __attribute__((used))
#else
#define DNSSD_USED
#endif
// NOT static -- otherwise the compiler may optimize it out // NOT static -- otherwise the compiler may optimize it out
// The "@(#) " pattern is a special prefix the "what" command looks for // The "@(#) " pattern is a special prefix the "what" command looks for
const char VersionString_SCCS_libdnssd[] = "@(#) libdns_sd " STRINGIFY(mDNSResponderVersion) " (" __DATE__ " " __TIME__ ")"; const char VersionString_SCCS_libdnssd[] DNSSD_USED = "@(#) libdns_sd " STRINGIFY(mDNSResponderVersion) " (" __DATE__ " " __TIME__ ")";

1
mDNSResponder/mDNSShared/dnssd_clientstub.c
View File

@ -1584,7 +1584,6 @@ DNSServiceErrorType DNSSD_API DNSServiceBrowse
return err; return err;
} }
DNSServiceErrorType DNSSD_API DNSServiceSetDefaultDomainForUser(DNSServiceFlags flags, const char *domain);
DNSServiceErrorType DNSSD_API DNSServiceSetDefaultDomainForUser(DNSServiceFlags flags, const char *domain) DNSServiceErrorType DNSSD_API DNSServiceSetDefaultDomainForUser(DNSServiceFlags flags, const char *domain)
{ {
DNSServiceErrorType err; DNSServiceErrorType err;

3
mDNSResponder/mDNSShared/mDNSDebug.c
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2003-2015 Apple Inc. All rights reserved. * Copyright (c) 2003-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -77,6 +77,7 @@ void LogMsg_(const char *format, ...) LOG_HELPER_BODY(MDNS_LOG_MSG)
void LogOperation_(const char *format, ...) LOG_HELPER_BODY(MDNS_LOG_OPERATION) void LogOperation_(const char *format, ...) LOG_HELPER_BODY(MDNS_LOG_OPERATION)
void LogSPS_(const char *format, ...) LOG_HELPER_BODY(MDNS_LOG_SPS) void LogSPS_(const char *format, ...) LOG_HELPER_BODY(MDNS_LOG_SPS)
void LogInfo_(const char *format, ...) LOG_HELPER_BODY(MDNS_LOG_INFO) void LogInfo_(const char *format, ...) LOG_HELPER_BODY(MDNS_LOG_INFO)
void LogDebug_(const char *format, ...) LOG_HELPER_BODY(MDNS_LOG_DEBUG)
#endif #endif
#if MDNS_DEBUGMSGS #if MDNS_DEBUGMSGS

114
mDNSResponder/mDNSShared/uds_daemon.c
View File

@ -1,6 +1,6 @@
/* -*- Mode: C; tab-width: 4 -*- /* -*- Mode: C; tab-width: 4 -*-
* *
* Copyright (c) 2003-2015 Apple Inc. All rights reserved. * Copyright (c) 2003-2018 Apple Inc. All rights reserved.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -41,6 +41,9 @@
// not fully qualified) with any number of labels e.g., moon, moon.cs, moon.cs.be, etc. // not fully qualified) with any number of labels e.g., moon, moon.cs, moon.cs.be, etc.
mDNSBool AlwaysAppendSearchDomains = mDNSfalse; mDNSBool AlwaysAppendSearchDomains = mDNSfalse;
// Control enabling ioptimistic DNS
mDNSBool EnableAllowExpired = mDNStrue;
// Apple-specific functionality, not required for other platforms // Apple-specific functionality, not required for other platforms
#if APPLE_OSX_mDNSResponder #if APPLE_OSX_mDNSResponder
#include <sys/ucred.h> #include <sys/ucred.h>
@ -325,8 +328,8 @@ mDNSlocal void abort_request(request_state *req)
// Now, if this request_state is not subordinate to some other primary, close file descriptor and discard replies // Now, if this request_state is not subordinate to some other primary, close file descriptor and discard replies
if (!req->primary) if (!req->primary)
{ {
if (req->errsd != req->sd) LogOperation("%3d: Removing FD and closing errsd %d", req->sd, req->errsd); if (req->errsd != req->sd) LogDebug("%3d: Removing FD and closing errsd %d", req->sd, req->errsd);
else LogOperation("%3d: Removing FD", req->sd); else LogDebug("%3d: Removing FD", req->sd);
udsSupportRemoveFDFromEventLoop(req->sd, req->platform_data); // Note: This also closes file descriptor req->sd for us udsSupportRemoveFDFromEventLoop(req->sd, req->platform_data); // Note: This also closes file descriptor req->sd for us
if (req->errsd != req->sd) { dnssd_close(req->errsd); req->errsd = req->sd; } if (req->errsd != req->sd) { dnssd_close(req->errsd); req->errsd = req->sd; }
@ -1077,7 +1080,7 @@ mDNSlocal void connection_termination(request_state *request)
mDNSlocal void handle_cancel_request(request_state *request) mDNSlocal void handle_cancel_request(request_state *request)
{ {
request_state **req = &all_requests; request_state **req = &all_requests;
LogOperation("%3d: Cancel %08X %08X", request->sd, request->hdr.client_context.u32[1], request->hdr.client_context.u32[0]); LogDebug("%3d: Cancel %08X %08X", request->sd, request->hdr.client_context.u32[1], request->hdr.client_context.u32[0]);
while (*req) while (*req)
{ {
if ((*req)->primary == request && if ((*req)->primary == request &&
@ -1689,7 +1692,7 @@ mDNSlocal mStatus register_service_instance(request_state *request, const domain
&request->u.servicereg.name, &request->u.servicereg.type, domain, &request->u.servicereg.name, &request->u.servicereg.type, domain,
request->u.servicereg.host.c[0] ? &request->u.servicereg.host : NULL, request->u.servicereg.host.c[0] ? &request->u.servicereg.host : NULL,
request->u.servicereg.port, request->u.servicereg.port,
request->u.servicereg.txtdata, request->u.servicereg.txtlen, mDNSNULL, request->u.servicereg.txtdata, request->u.servicereg.txtlen,
instance->subtypes, request->u.servicereg.num_subtypes, instance->subtypes, request->u.servicereg.num_subtypes,
interfaceID, regservice_callback, instance, request->flags); interfaceID, regservice_callback, instance, request->flags);
@ -2166,7 +2169,7 @@ mDNSlocal mStatus add_domain_to_browser(request_state *info, const domainname *d
{ {
domainname tmp; domainname tmp;
ConstructServiceName(&tmp, NULL, &info->u.browser.regtype, &b->domain); ConstructServiceName(&tmp, NULL, &info->u.browser.regtype, &b->domain);
LogInfo("add_domain_to_browser: calling external_start_browsing_for_service()"); LogDebug("add_domain_to_browser: calling external_start_browsing_for_service()");
external_start_browsing_for_service(info->u.browser.interface_id, &tmp, kDNSType_PTR, info->flags); external_start_browsing_for_service(info->u.browser.interface_id, &tmp, kDNSType_PTR, info->flags);
} }
} }
@ -3162,7 +3165,7 @@ mDNSlocal mDNSBool RetryQuestionWithSearchDomains(DNSQuestion *question, request
} }
else else
{ {
LogInfo("%3d: RetryQuestionWithSearchDomains: Not appending search domains - SuppressQuery %d, SearchListIndex %d, AppendSearchDomains %d", req->sd, AddRecord, question->SearchListIndex, question->AppendSearchDomains); LogDebug("%3d: RetryQuestionWithSearchDomains: Not appending search domains - SuppressQuery %d, SearchListIndex %d, AppendSearchDomains %d", req->sd, AddRecord, question->SearchListIndex, question->AppendSearchDomains);
} }
return mDNSfalse; return mDNSfalse;
} }
@ -3178,10 +3181,11 @@ mDNSlocal void queryrecord_result_reply(mDNS *const m, request_state *req, DNSQu
ConvertDomainNameToCString(answer->name, name); ConvertDomainNameToCString(answer->name, name);
LogOperation("%3d: %s(%##s, %s) RESULT %s interface %d: %s", req->sd, LogOperation("%3d: %s(%##s, %s) RESULT %s interface %d: (%s)%s", req->sd,
req->hdr.op == query_request ? "DNSServiceQueryRecord" : "DNSServiceGetAddrInfo", req->hdr.op == query_request ? "DNSServiceQueryRecord" : "DNSServiceGetAddrInfo",
question->qname.c, DNSTypeName(question->qtype), AddRecord ? "ADD" : "RMV", question->qname.c, DNSTypeName(question->qtype), AddRecord ? "ADD" : "RMV",
mDNSPlatformInterfaceIndexfromInterfaceID(m, answer->InterfaceID, mDNSfalse), RRDisplayString(m, answer)); mDNSPlatformInterfaceIndexfromInterfaceID(m, answer->InterfaceID, mDNSfalse),
MortalityDisplayString(answer->mortality), RRDisplayString(m, answer));
len = sizeof(DNSServiceFlags); // calculate reply data length len = sizeof(DNSServiceFlags); // calculate reply data length
len += sizeof(mDNSu32); // interface index len += sizeof(mDNSu32); // interface index
@ -3195,6 +3199,8 @@ mDNSlocal void queryrecord_result_reply(mDNS *const m, request_state *req, DNSQu
if (AddRecord) if (AddRecord)
flags |= kDNSServiceFlagsAdd; flags |= kDNSServiceFlagsAdd;
if (answer->mortality == Mortality_Ghost)
flags |= kDNSServiceFlagsExpiredAnswer;
if (question->ValidationStatus != 0) if (question->ValidationStatus != 0)
{ {
error = kDNSServiceErr_NoError; error = kDNSServiceErr_NoError;
@ -3452,7 +3458,7 @@ mDNSlocal void queryrecord_result_callback(mDNS *const m, DNSQuestion *question,
// the "core" needs to temporarily turn off SuppressQuery to answer this query. // the "core" needs to temporarily turn off SuppressQuery to answer this query.
if (AddRecord == QC_suppressed) if (AddRecord == QC_suppressed)
{ {
LogInfo("queryrecord_result_callback: Suppressed question %##s (%s)", question->qname.c, DNSTypeName(question->qtype)); LogDebug("queryrecord_result_callback: Suppressed question %##s (%s)", question->qname.c, DNSTypeName(question->qtype));
queryrecord_result_reply(m, req, question, answer, AddRecord, kDNSServiceErr_NoSuchRecord); queryrecord_result_reply(m, req, question, answer, AddRecord, kDNSServiceErr_NoSuchRecord);
return; return;
} }
@ -3517,7 +3523,7 @@ mDNSlocal void queryrecord_result_callback(mDNS *const m, DNSQuestion *question,
// appended .local, we need to see if we need to send an additional query. This should // appended .local, we need to see if we need to send an additional query. This should
// normally happen just once because after we append .local, we ignore all negative // normally happen just once because after we append .local, we ignore all negative
// responses for .local above. // responses for .local above.
LogInfo("queryrecord_result_callback: Retrying question %##s (%s) after appending search domains", question->qname.c, DNSTypeName(question->qtype)); LogDebug("queryrecord_result_callback: Retrying question %##s (%s) after appending search domains", question->qname.c, DNSTypeName(question->qtype));
if (RetryQuestionWithSearchDomains(question, req, AddRecord)) if (RetryQuestionWithSearchDomains(question, req, AddRecord))
{ {
// Note: We need to call SendAdditionalQuery every time after appending a search domain as .local could // Note: We need to call SendAdditionalQuery every time after appending a search domain as .local could
@ -3646,34 +3652,35 @@ mDNSlocal mStatus handle_queryrecord_request(request_state *request)
request->interfaceIndex = interfaceIndex; request->interfaceIndex = interfaceIndex;
mDNSPlatformMemZero(&request->u.queryrecord, sizeof(request->u.queryrecord)); mDNSPlatformMemZero(&request->u.queryrecord, sizeof(request->u.queryrecord));
q->InterfaceID = InterfaceID; q->InterfaceID = InterfaceID;
q->flags = flags; q->flags = flags;
q->Target = zeroAddr; q->Target = zeroAddr;
if (!MakeDomainNameFromDNSNameString(&q->qname, name)) return(mStatus_BadParamErr); if (!MakeDomainNameFromDNSNameString(&q->qname, name)) return(mStatus_BadParamErr);
#if 0 #if 0
if (!AuthorizedDomain(request, &q->qname, AutoBrowseDomains)) return (mStatus_NoError); if (!AuthorizedDomain(request, &q->qname, AutoBrowseDomains)) return (mStatus_NoError);
#endif #endif
q->qtype = rrtype; q->qtype = rrtype;
q->qclass = rrclass; q->qclass = rrclass;
q->LongLived = (flags & kDNSServiceFlagsLongLivedQuery ) != 0; q->LongLived = (flags & kDNSServiceFlagsLongLivedQuery ) != 0;
q->ExpectUnique = mDNSfalse; q->ExpectUnique = mDNSfalse;
q->ForceMCast = (flags & kDNSServiceFlagsForceMulticast ) != 0; q->ForceMCast = (flags & kDNSServiceFlagsForceMulticast ) != 0;
q->ReturnIntermed = (flags & kDNSServiceFlagsReturnIntermediates) != 0; q->ReturnIntermed = (flags & kDNSServiceFlagsReturnIntermediates) != 0;
q->SuppressUnusable = (flags & kDNSServiceFlagsSuppressUnusable ) != 0; q->SuppressUnusable = (flags & kDNSServiceFlagsSuppressUnusable ) != 0;
q->TimeoutQuestion = (flags & kDNSServiceFlagsTimeout ) != 0; q->TimeoutQuestion = (flags & kDNSServiceFlagsTimeout ) != 0;
q->WakeOnResolve = 0; q->allowExpired = (EnableAllowExpired && (flags & kDNSServiceFlagsAllowExpiredAnswers) != 0) ? AllowExpired_AllowExpiredAnswers : AllowExpired_None;
q->WakeOnResolve = 0;
q->UseBackgroundTrafficClass = (flags & kDNSServiceFlagsBackgroundTrafficClass) != 0; q->UseBackgroundTrafficClass = (flags & kDNSServiceFlagsBackgroundTrafficClass) != 0;
if ((flags & kDNSServiceFlagsValidate) != 0) if ((flags & kDNSServiceFlagsValidate) != 0)
q->ValidationRequired = DNSSEC_VALIDATION_SECURE; q->ValidationRequired = DNSSEC_VALIDATION_SECURE;
else if ((flags & kDNSServiceFlagsValidateOptional) != 0) else if ((flags & kDNSServiceFlagsValidateOptional) != 0)
q->ValidationRequired = DNSSEC_VALIDATION_SECURE_OPTIONAL; q->ValidationRequired = DNSSEC_VALIDATION_SECURE_OPTIONAL;
q->ValidatingResponse = 0; q->ValidatingResponse = 0;
q->ProxyQuestion = 0; q->ProxyQuestion = 0;
q->AnonInfo = mDNSNULL; q->AnonInfo = mDNSNULL;
q->QuestionCallback = queryrecord_result_callback; q->QuestionCallback = queryrecord_result_callback;
q->QuestionContext = request; q->QuestionContext = request;
q->SearchListIndex = 0; q->SearchListIndex = 0;
q->StopTime = 0; q->StopTime = 0;
q->DNSSECAuthInfo = mDNSNULL; q->DNSSECAuthInfo = mDNSNULL;
q->DAIFreeCallback = mDNSNULL; q->DAIFreeCallback = mDNSNULL;
@ -3737,7 +3744,7 @@ mDNSlocal mStatus handle_queryrecord_request(request_state *request)
LogMcastQ(q, request, q_start); LogMcastQ(q, request, q_start);
if (callExternalHelpers(q->InterfaceID, &q->qname, q->flags)) if (callExternalHelpers(q->InterfaceID, &q->qname, q->flags))
{ {
LogInfo("handle_queryrecord_request: calling external_start_browsing_for_service()"); LogDebug("handle_queryrecord_request: calling external_start_browsing_for_service()");
external_start_browsing_for_service(q->InterfaceID, &q->qname, q->qtype, q->flags); external_start_browsing_for_service(q->InterfaceID, &q->qname, q->qtype, q->flags);
} }
} }
@ -4258,7 +4265,7 @@ mDNSlocal void addrinfo_termination_callback(request_state *request)
if (callExternalHelpers(request->u.addrinfo.interface_id, &request->u.addrinfo.q4.qname, request->flags)) if (callExternalHelpers(request->u.addrinfo.interface_id, &request->u.addrinfo.q4.qname, request->flags))
{ {
LogInfo("addrinfo_termination_callback: calling external_stop_browsing_for_service() for kDNSServiceType_A record"); LogInfo("addrinfo_termination_callback: calling external_stop_browsing_for_service() for A record");
external_stop_browsing_for_service(request->u.addrinfo.interface_id, &request->u.addrinfo.q4.qname, kDNSServiceType_A, request->flags); external_stop_browsing_for_service(request->u.addrinfo.interface_id, &request->u.addrinfo.q4.qname, kDNSServiceType_A, request->flags);
} }
} }
@ -4293,7 +4300,7 @@ mDNSlocal void addrinfo_termination_callback(request_state *request)
if (callExternalHelpers(request->u.addrinfo.interface_id, &request->u.addrinfo.q6.qname, request->flags)) if (callExternalHelpers(request->u.addrinfo.interface_id, &request->u.addrinfo.q6.qname, request->flags))
{ {
LogInfo("addrinfo_termination_callback: calling external_stop_browsing_for_service() for kDNSServiceType_AAAA record"); LogInfo("addrinfo_termination_callback: calling external_stop_browsing_for_service() for AAAA record");
external_stop_browsing_for_service(request->u.addrinfo.interface_id, &request->u.addrinfo.q6.qname, kDNSServiceType_AAAA, request->flags); external_stop_browsing_for_service(request->u.addrinfo.interface_id, &request->u.addrinfo.q6.qname, kDNSServiceType_AAAA, request->flags);
} }
} }
@ -4423,19 +4430,20 @@ mDNSlocal mStatus handle_addrinfo_request(request_state *request)
request->u.addrinfo.protocol = (kDNSServiceProtocol_IPv4 | kDNSServiceProtocol_IPv6); request->u.addrinfo.protocol = (kDNSServiceProtocol_IPv4 | kDNSServiceProtocol_IPv6);
} }
request->u.addrinfo.q4.InterfaceID = request->u.addrinfo.q6.InterfaceID = request->u.addrinfo.interface_id; request->u.addrinfo.q4.InterfaceID = request->u.addrinfo.q6.InterfaceID = request->u.addrinfo.interface_id;
request->u.addrinfo.q4.ServiceID = request->u.addrinfo.q6.ServiceID = serviceIndex; request->u.addrinfo.q4.ServiceID = request->u.addrinfo.q6.ServiceID = serviceIndex;
request->u.addrinfo.q4.flags = request->u.addrinfo.q6.flags = flags; request->u.addrinfo.q4.flags = request->u.addrinfo.q6.flags = flags;
request->u.addrinfo.q4.Target = request->u.addrinfo.q6.Target = zeroAddr; request->u.addrinfo.q4.Target = request->u.addrinfo.q6.Target = zeroAddr;
request->u.addrinfo.q4.qname = request->u.addrinfo.q6.qname = d; request->u.addrinfo.q4.qname = request->u.addrinfo.q6.qname = d;
request->u.addrinfo.q4.qclass = request->u.addrinfo.q6.qclass = kDNSServiceClass_IN; request->u.addrinfo.q4.qclass = request->u.addrinfo.q6.qclass = kDNSServiceClass_IN;
request->u.addrinfo.q4.LongLived = request->u.addrinfo.q6.LongLived = (flags & kDNSServiceFlagsLongLivedQuery ) != 0; request->u.addrinfo.q4.LongLived = request->u.addrinfo.q6.LongLived = (flags & kDNSServiceFlagsLongLivedQuery ) != 0;
request->u.addrinfo.q4.ExpectUnique = request->u.addrinfo.q6.ExpectUnique = mDNSfalse; request->u.addrinfo.q4.ExpectUnique = request->u.addrinfo.q6.ExpectUnique = mDNSfalse;
request->u.addrinfo.q4.ForceMCast = request->u.addrinfo.q6.ForceMCast = (flags & kDNSServiceFlagsForceMulticast ) != 0; request->u.addrinfo.q4.ForceMCast = request->u.addrinfo.q6.ForceMCast = (flags & kDNSServiceFlagsForceMulticast ) != 0;
request->u.addrinfo.q4.ReturnIntermed = request->u.addrinfo.q6.ReturnIntermed = (flags & kDNSServiceFlagsReturnIntermediates) != 0; request->u.addrinfo.q4.ReturnIntermed = request->u.addrinfo.q6.ReturnIntermed = (flags & kDNSServiceFlagsReturnIntermediates) != 0;
request->u.addrinfo.q4.SuppressUnusable = request->u.addrinfo.q6.SuppressUnusable = (flags & kDNSServiceFlagsSuppressUnusable ) != 0; request->u.addrinfo.q4.SuppressUnusable = request->u.addrinfo.q6.SuppressUnusable = (flags & kDNSServiceFlagsSuppressUnusable ) != 0;
request->u.addrinfo.q4.TimeoutQuestion = request->u.addrinfo.q6.TimeoutQuestion = (flags & kDNSServiceFlagsTimeout ) != 0; request->u.addrinfo.q4.TimeoutQuestion = request->u.addrinfo.q6.TimeoutQuestion = (flags & kDNSServiceFlagsTimeout ) != 0;
request->u.addrinfo.q4.WakeOnResolve = request->u.addrinfo.q6.WakeOnResolve = 0; request->u.addrinfo.q4.allowExpired = request->u.addrinfo.q6.allowExpired = (EnableAllowExpired && (flags & kDNSServiceFlagsAllowExpiredAnswers) != 0) ? AllowExpired_AllowExpiredAnswers : AllowExpired_None;
request->u.addrinfo.q4.WakeOnResolve = request->u.addrinfo.q6.WakeOnResolve = 0;
request->u.addrinfo.q4.UseBackgroundTrafficClass = request->u.addrinfo.q6.UseBackgroundTrafficClass = (flags & kDNSServiceFlagsBackgroundTrafficClass) != 0; request->u.addrinfo.q4.UseBackgroundTrafficClass = request->u.addrinfo.q6.UseBackgroundTrafficClass = (flags & kDNSServiceFlagsBackgroundTrafficClass) != 0;
if ((flags & kDNSServiceFlagsValidate) != 0) if ((flags & kDNSServiceFlagsValidate) != 0)
request->u.addrinfo.q4.ValidationRequired = request->u.addrinfo.q6.ValidationRequired = DNSSEC_VALIDATION_SECURE; request->u.addrinfo.q4.ValidationRequired = request->u.addrinfo.q6.ValidationRequired = DNSSEC_VALIDATION_SECURE;
@ -4497,7 +4505,7 @@ mDNSlocal mStatus handle_addrinfo_request(request_state *request)
LogMcastQ(&request->u.addrinfo.q6, request, q_start); LogMcastQ(&request->u.addrinfo.q6, request, q_start);
if (callExternalHelpers(InterfaceID, &d, flags)) if (callExternalHelpers(InterfaceID, &d, flags))
{ {
LogInfo("handle_addrinfo_request: calling external_start_browsing_for_service() for kDNSServiceType_AAAA record"); LogDebug("handle_addrinfo_request: calling external_start_browsing_for_service() for AAAA record");
external_start_browsing_for_service(InterfaceID, &d, kDNSServiceType_AAAA, flags); external_start_browsing_for_service(InterfaceID, &d, kDNSServiceType_AAAA, flags);
} }
} }
@ -4539,7 +4547,7 @@ mDNSlocal mStatus handle_addrinfo_request(request_state *request)
if (callExternalHelpers(InterfaceID, &d, flags)) if (callExternalHelpers(InterfaceID, &d, flags))
{ {
LogInfo("addrinfo_termination_callback: calling external_stop_browsing_for_service() for kDNSServiceType_AAAA record"); LogInfo("addrinfo_termination_callback: calling external_stop_browsing_for_service() for AAAA record");
external_stop_browsing_for_service(InterfaceID, &d, kDNSServiceType_AAAA, flags); external_stop_browsing_for_service(InterfaceID, &d, kDNSServiceType_AAAA, flags);
} }
} }
@ -4553,7 +4561,7 @@ mDNSlocal mStatus handle_addrinfo_request(request_state *request)
LogMcastQ(&request->u.addrinfo.q4, request, q_start); LogMcastQ(&request->u.addrinfo.q4, request, q_start);
if (callExternalHelpers(InterfaceID, &d, flags)) if (callExternalHelpers(InterfaceID, &d, flags))
{ {
LogInfo("handle_addrinfo_request: calling external_start_browsing_for_service() for kDNSServiceType_A record"); LogDebug("handle_addrinfo_request: calling external_start_browsing_for_service() for A record");
external_start_browsing_for_service(InterfaceID, &d, kDNSServiceType_A, flags); external_start_browsing_for_service(InterfaceID, &d, kDNSServiceType_A, flags);
} }
} }
@ -4753,7 +4761,7 @@ mDNSlocal void read_msg(request_state *req)
#if !defined(USE_TCP_LOOPBACK) #if !defined(USE_TCP_LOOPBACK)
got_errfd: got_errfd:
#endif #endif
LogOperation("%3d: Result code socket %d created %08X %08X", req->sd, req->errsd, req->hdr.client_context.u32[1], req->hdr.client_context.u32[0]); LogDebug("%3d: Result code socket %d created %08X %08X", req->sd, req->errsd, req->hdr.client_context.u32[1], req->hdr.client_context.u32[0]);
#if defined(_WIN32) #if defined(_WIN32)
if (ioctlsocket(req->errsd, FIONBIO, &opt) != 0) if (ioctlsocket(req->errsd, FIONBIO, &opt) != 0)
#else #else
@ -4952,8 +4960,8 @@ mDNSlocal void request_callback(int fd, short filter, void *info)
send_all(req->errsd, (const char *)&err_netorder, sizeof(err_netorder)); send_all(req->errsd, (const char *)&err_netorder, sizeof(err_netorder));
if (req->errsd != req->sd) if (req->errsd != req->sd)
{ {
LogOperation("%3d: Result code socket %d closed %08X %08X (%d)", LogDebug("%3d: Result code socket %d closed %08X %08X (%d)",
req->sd, req->errsd, req->hdr.client_context.u32[1], req->hdr.client_context.u32[0], err); req->sd, req->errsd, req->hdr.client_context.u32[1], req->hdr.client_context.u32[0], err);
dnssd_close(req->errsd); dnssd_close(req->errsd);
req->errsd = req->sd; req->errsd = req->sd;
// Also need to reset the parent's errsd, if this is a subordinate operation // Also need to reset the parent's errsd, if this is a subordinate operation
@ -5024,7 +5032,7 @@ mDNSlocal void connect_callback(int fd, short filter, void *info)
debugf("LOCAL_PEERCRED %d %u %u %d", xucredlen, x.cr_version, x.cr_uid, x.cr_ngroups); debugf("LOCAL_PEERCRED %d %u %u %d", xucredlen, x.cr_version, x.cr_uid, x.cr_ngroups);
#endif // APPLE_OSX_mDNSResponder #endif // APPLE_OSX_mDNSResponder
LogOperation("%3d: connect_callback: Adding FD for uid %u", request->sd, request->uid); LogDebug("%3d: connect_callback: Adding FD for uid %u", request->sd, request->uid);
udsSupportAddFDToEventLoop(sd, request_callback, request, &request->platform_data); udsSupportAddFDToEventLoop(sd, request_callback, request, &request->platform_data);
} }
} }
@ -6254,10 +6262,10 @@ struct CompileTimeAssertionChecks_uds_daemon
// Check our structures are reasonable sizes. Including overly-large buffers, or embedding // Check our structures are reasonable sizes. Including overly-large buffers, or embedding
// other overly-large structures instead of having a pointer to them, can inadvertently // other overly-large structures instead of having a pointer to them, can inadvertently
// cause structure sizes (and therefore memory usage) to balloon unreasonably. // cause structure sizes (and therefore memory usage) to balloon unreasonably.
char sizecheck_request_state [(sizeof(request_state) <= 2954) ? 1 : -1]; char sizecheck_request_state [(sizeof(request_state) <= 3696) ? 1 : -1];
char sizecheck_registered_record_entry[(sizeof(registered_record_entry) <= 60) ? 1 : -1]; char sizecheck_registered_record_entry[(sizeof(registered_record_entry) <= 60) ? 1 : -1];
char sizecheck_service_instance [(sizeof(service_instance) <= 6552) ? 1 : -1]; char sizecheck_service_instance [(sizeof(service_instance) <= 6552) ? 1 : -1];
char sizecheck_browser_t [(sizeof(browser_t) <= 1202) ? 1 : -1]; char sizecheck_browser_t [(sizeof(browser_t) <= 1432) ? 1 : -1];
char sizecheck_reply_hdr [(sizeof(reply_hdr) <= 12) ? 1 : -1]; char sizecheck_reply_hdr [(sizeof(reply_hdr) <= 12) ? 1 : -1];
char sizecheck_reply_state [(sizeof(reply_state) <= 64) ? 1 : -1]; char sizecheck_reply_state [(sizeof(reply_state) <= 64) ? 1 : -1];
}; };

18
mDNSResponder/unittests/mDNSCoreReceiveTest.c
View File

@ -4,7 +4,6 @@
int InitmDNSCoreReceiveTest(void); int InitmDNSCoreReceiveTest(void);
int ValidQueryReqTest(void); int ValidQueryReqTest(void);
int NullDstQueryReqTest(void); int NullDstQueryReqTest(void);
int ReceiveArpLogMsgTest(void);
void InitmDNSStorage(mDNS *const m); void InitmDNSStorage(mDNS *const m);
// This DNS message was gleaned from a uDNS query request packet that was captured with Wireshark. // This DNS message was gleaned from a uDNS query request packet that was captured with Wireshark.
@ -46,7 +45,6 @@ UNITTEST_HEADER(mDNSCoreReceiveTest)
UNITTEST_TEST(InitmDNSCoreReceiveTest) UNITTEST_TEST(InitmDNSCoreReceiveTest)
UNITTEST_TEST(ValidQueryReqTest) UNITTEST_TEST(ValidQueryReqTest)
UNITTEST_TEST(NullDstQueryReqTest) UNITTEST_TEST(NullDstQueryReqTest)
UNITTEST_TEST(ReceiveArpLogMsgTest)
UNITTEST_FOOTER UNITTEST_FOOTER
UNITTEST_HEADER(InitmDNSCoreReceiveTest) UNITTEST_HEADER(InitmDNSCoreReceiveTest)
@ -56,16 +54,6 @@ UNITTEST_HEADER(InitmDNSCoreReceiveTest)
mDNS_PacketLoggingEnabled = 0; mDNS_PacketLoggingEnabled = 0;
UNITTEST_FOOTER UNITTEST_FOOTER
UNITTEST_HEADER(ReceiveArpLogMsgTest)
// Init unit test environment and verify no error occurred.
mStatus result = init_mdns_environment(mDNStrue);
UNITTEST_ASSERT(result == mStatus_NoError);
UNITTEST_ASSERT(result == mStatus_NoError);
ArpLogMsgTest(&mDNSStorage, (const ARP_EthIP *) arp_request_packet, primary_interfaceID);
UNITTEST_ASSERT(result == mStatus_NoError);
UNITTEST_FOOTER
UNITTEST_HEADER(ValidQueryReqTest) UNITTEST_HEADER(ValidQueryReqTest)
mDNS *const m = &mDNSStorage; mDNS *const m = &mDNSStorage;
mDNSAddr srcaddr, dstaddr; mDNSAddr srcaddr, dstaddr;
@ -73,9 +61,9 @@ UNITTEST_HEADER(ValidQueryReqTest)
DNSMessage * msg; DNSMessage * msg;
const mDNSu8 * end; const mDNSu8 * end;
// This test case does not require setup of interfaces, the record's cache, or pending questions // Init unit test environment and verify no error occurred.
// so m is initialized to all zeros. mStatus result = init_mdns_environment(mDNStrue);
InitmDNSStorage(m); UNITTEST_ASSERT(result == mStatus_NoError);
// Used random values for srcaddr and srcport // Used random values for srcaddr and srcport
srcaddr.type = mDNSAddrType_IPv4; srcaddr.type = mDNSAddrType_IPv4;

9
mDNSResponder/unittests/mdns_ut.c
View File

@ -6,12 +6,3 @@ mDNSexport mStatus mDNS_InitStorage_ut(mDNS *const m, mDNS_PlatformSupport *cons
{ {
return mDNS_InitStorage(m, p, rrcachestorage, rrcachesize, AdvertiseLocalAddresses, Callback, Context); return mDNS_InitStorage(m, p, rrcachestorage, rrcachesize, AdvertiseLocalAddresses, Callback, Context);
} }
mDNSexport mStatus ArpLogMsgTest(mDNS *const m, const ARP_EthIP *const arp, const mDNSInterfaceID InterfaceID)
{
NetworkInterfaceInfo *intf = FirstInterfaceForID(m, InterfaceID);
static const char msg[] = "ARP Req message";
LogMsg("Arp %-7s %s %.6a %.4a for %.4a",
intf->ifname, msg, arp->sha.b, arp->spa.b, arp->tpa.b);
return mStatus_NoError;
}

2
mDNSResponder/unittests/unittest_common.h
View File

@ -51,7 +51,5 @@ extern int LogEtcHosts_ut(mDNS *const m);
extern mDNSBool mDNSMacOSXCreateEtcHostsEntry_ut(const domainname *domain, const struct sockaddr *sa, extern mDNSBool mDNSMacOSXCreateEtcHostsEntry_ut(const domainname *domain, const struct sockaddr *sa,
const domainname *cname, char *ifname, AuthHash *auth); const domainname *cname, char *ifname, AuthHash *auth);
extern void UpdateEtcHosts_ut(void *context); extern void UpdateEtcHosts_ut(void *context);
extern mStatus ArpLogMsgTest(mDNS *const m, const ARP_EthIP *const arp, const mDNSInterfaceID InterfaceID);
#endif /* UNITTEST_COMMON_H */ #endif /* UNITTEST_COMMON_H */