mirror of
https://github.com/apache/nuttx-apps.git
synced 2025-07-04 19:07:16 +08:00
83ea91531f
Xiaomi has submitted the SGA and we can migate the license to ASF Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
484 lines
11 KiB
C
484 lines
11 KiB
C
/****************************************************************************
|
|
* apps/netutils/codecs/urldecode.c
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
|
|
#include "netutils/urldecode.h"
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_URLCODE
|
|
# define IS_HEX_CHAR(ch) \
|
|
((ch >= '0' && ch <= '9') || \
|
|
(ch >= 'a' && ch <= 'f') || \
|
|
(ch >= 'A' && ch <= 'F'))
|
|
|
|
# define HEX_VALUE(ch, value) \
|
|
if (ch >= '0' && ch <= '9') \
|
|
{ \
|
|
value = ch - '0'; \
|
|
} \
|
|
else if (ch >= 'a' && ch <= 'f') \
|
|
{ \
|
|
value = ch - 'a' + 10; \
|
|
} \
|
|
else \
|
|
{ \
|
|
value = ch - 'A' + 10; \
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: from_hex
|
|
*
|
|
* Description:
|
|
* Converts a hex character to its integer value,
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_URLCODE_NEWMEMORY
|
|
static char from_hex(char ch)
|
|
{
|
|
return isdigit(ch) ? ch - '0' : tolower(ch) - 'a' + 10;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: to_hex
|
|
*
|
|
* Description:
|
|
* Converts an integer value to its hex character,
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_URLCODE_NEWMEMORY
|
|
static char to_hex(char code)
|
|
{
|
|
static const char hex[] = "0123456789abcdef";
|
|
return hex[code & 15];
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: int2h
|
|
*
|
|
* Description:
|
|
* Convert a single character to a 2 digit hex str a terminating '\0' is
|
|
* added
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_AVR_URLCODE
|
|
static void int2h(char c, char *hstr)
|
|
{
|
|
hstr[1] = (c & 0xf) + '0';
|
|
if ((c & 0xf) > 9)
|
|
{
|
|
hstr[1] = (c & 0xf) - 10 + 'a';
|
|
}
|
|
|
|
c = (c >> 4) & 0xf;
|
|
hstr[0] = c + '0';
|
|
if (c > 9)
|
|
{
|
|
hstr[0] = c - 10 + 'a';
|
|
}
|
|
|
|
hstr[2] = '\0';
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: h2int
|
|
*
|
|
* Description:
|
|
* Convert a single hex digit character to its integer value.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_AVR_URLCODE
|
|
static unsigned char h2int(char c)
|
|
{
|
|
if (c >= '0' && c <= '9')
|
|
{
|
|
return ((unsigned char)c - '0');
|
|
}
|
|
|
|
if (c >= 'a' && c <= 'f')
|
|
{
|
|
return ((unsigned char)c - 'a' + 10);
|
|
}
|
|
|
|
if (c >= 'A' && c <= 'F')
|
|
{
|
|
return ((unsigned char)c - 'A' + 10);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: url_encode
|
|
*
|
|
* Description:
|
|
* Returns a url-encoded version of str.
|
|
*
|
|
* IMPORTANT: be sure to free() the returned string after use.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_URLCODE_NEWMEMORY
|
|
char *url_encode(char *str)
|
|
{
|
|
char *pstr = str;
|
|
char *buf = malloc(strlen(str) * 3 + 1);
|
|
char *pbuf = buf;
|
|
|
|
while (*pstr)
|
|
{
|
|
if (isalnum(*pstr) || *pstr == '-' || *pstr == '_' || *pstr == '.' || *pstr == '~')
|
|
{
|
|
*pbuf++ = *pstr;
|
|
}
|
|
else if (*pstr == ' ')
|
|
{
|
|
*pbuf++ = '+';
|
|
}
|
|
else
|
|
{
|
|
*pbuf++ = '%';
|
|
*pbuf++ = to_hex(*pstr >> 4);
|
|
*pbuf++ = to_hex(*pstr & 15);
|
|
}
|
|
|
|
pstr++;
|
|
}
|
|
|
|
*pbuf = '\0';
|
|
return buf;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: url_decode
|
|
*
|
|
* Description:
|
|
* Returns a url-decoded version of str.
|
|
*
|
|
* IMPORTANT: be sure to free() the returned string after use.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_URLCODE_NEWMEMORY
|
|
char *url_decode(char *str)
|
|
{
|
|
char *pstr = str;
|
|
char *buf = malloc(strlen(str) + 1);
|
|
char *pbuf = buf;
|
|
|
|
while (*pstr)
|
|
{
|
|
if (*pstr == '%')
|
|
{
|
|
if (pstr[1] && pstr[2])
|
|
{
|
|
*pbuf++ = from_hex(pstr[1]) << 4 | from_hex(pstr[2]);
|
|
pstr += 2;
|
|
}
|
|
}
|
|
else if (*pstr == '+')
|
|
{
|
|
*pbuf++ = ' ';
|
|
}
|
|
else
|
|
{
|
|
*pbuf++ = *pstr;
|
|
}
|
|
|
|
pstr++;
|
|
}
|
|
|
|
*pbuf = '\0';
|
|
return buf;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: urlencode
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_URLCODE
|
|
char *urlencode(const char *src, const int src_len, char *dest, int *dest_len)
|
|
{
|
|
static const unsigned char hex_chars[] = "0123456789ABCDEF";
|
|
const unsigned char *pSrc;
|
|
const unsigned char *pEnd;
|
|
char *pDest;
|
|
|
|
pDest = dest;
|
|
pEnd = (unsigned char *)src + src_len;
|
|
for (pSrc = (unsigned char *)src; pSrc < pEnd; pSrc++)
|
|
{
|
|
if ((*pSrc >= '0' && *pSrc <= '9') ||
|
|
(*pSrc >= 'a' && *pSrc <= 'z') ||
|
|
(*pSrc >= 'A' && *pSrc <= 'Z') ||
|
|
(*pSrc == '_' || *pSrc == '-' || *pSrc == '.' || *pSrc == '~'))
|
|
{
|
|
*pDest++ = *pSrc;
|
|
}
|
|
else if (*pSrc == ' ')
|
|
{
|
|
*pDest++ = '+';
|
|
}
|
|
else
|
|
{
|
|
*pDest++ = '%';
|
|
*pDest++ = hex_chars[(*pSrc) >> 4];
|
|
*pDest++ = hex_chars[(*pSrc) & 0x0F];
|
|
}
|
|
}
|
|
|
|
*pDest = '\0';
|
|
*dest_len = pDest - dest;
|
|
return dest;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: urldecode
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_URLCODE
|
|
char *urldecode(const char *src, const int src_len, char *dest, int *dest_len)
|
|
{
|
|
const unsigned char *pSrc;
|
|
const unsigned char *pEnd;
|
|
char *pDest;
|
|
unsigned char cHigh;
|
|
unsigned char cLow;
|
|
int valHigh;
|
|
int valLow;
|
|
|
|
pDest = dest;
|
|
pSrc = (unsigned char *)src;
|
|
pEnd = (unsigned char *)src + src_len;
|
|
while (pSrc < pEnd)
|
|
{
|
|
if (*pSrc == '%' && pSrc + 2 < pEnd)
|
|
{
|
|
cHigh = *(pSrc + 1);
|
|
cLow = *(pSrc + 2);
|
|
|
|
if (IS_HEX_CHAR(cHigh) && IS_HEX_CHAR(cLow))
|
|
{
|
|
HEX_VALUE(cHigh, valHigh)
|
|
HEX_VALUE(cLow, valLow)
|
|
*pDest++ = (valHigh << 4) | valLow;
|
|
pSrc += 3;
|
|
}
|
|
else
|
|
{
|
|
*pDest++ = *pSrc;
|
|
pSrc++;
|
|
}
|
|
}
|
|
else if (*pSrc == '+')
|
|
{
|
|
*pDest++ = ' ';
|
|
pSrc++;
|
|
}
|
|
else
|
|
{
|
|
*pDest++ = *pSrc;
|
|
pSrc++;
|
|
}
|
|
}
|
|
|
|
*pDest = '\0';
|
|
*dest_len = pDest - dest;
|
|
return dest;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: urlencode_len
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_URLCODE
|
|
int urlencode_len(const char *src, const int src_len)
|
|
{
|
|
const unsigned char *pSrc;
|
|
const unsigned char *pEnd;
|
|
int len = 0;
|
|
|
|
pEnd = (unsigned char *)src + src_len;
|
|
for (pSrc = (unsigned char *)src; pSrc < pEnd; pSrc++)
|
|
{
|
|
if ((*pSrc >= '0' && *pSrc <= '9') ||
|
|
(*pSrc >= 'a' && *pSrc <= 'z') ||
|
|
(*pSrc >= 'A' && *pSrc <= 'Z') ||
|
|
(*pSrc == '_' || *pSrc == '-' || *pSrc == '.' || *pSrc == '~' || *pSrc == ' '))
|
|
{
|
|
len++;
|
|
}
|
|
else
|
|
{
|
|
len+=3;
|
|
}
|
|
}
|
|
|
|
return len;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: urldecode_len
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_URLCODE
|
|
int urldecode_len(const char *src, const int src_len)
|
|
{
|
|
const unsigned char *pSrc;
|
|
const unsigned char *pEnd;
|
|
int len = 0;
|
|
unsigned char cHigh;
|
|
unsigned char cLow;
|
|
|
|
pSrc = (unsigned char *)src;
|
|
pEnd = (unsigned char *)src + src_len;
|
|
while (pSrc < pEnd)
|
|
{
|
|
if (*pSrc == '%' && pSrc + 2 < pEnd)
|
|
{
|
|
cHigh = *(pSrc + 1);
|
|
cLow = *(pSrc + 2);
|
|
|
|
if (IS_HEX_CHAR(cHigh) && IS_HEX_CHAR(cLow))
|
|
{
|
|
pSrc += 2;
|
|
}
|
|
}
|
|
|
|
len++;
|
|
pSrc++;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: urlrawdecode
|
|
*
|
|
* Description:
|
|
* decode a url string e.g "hello%20joe" or "hello+joe" becomes "hello joe"
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_AVR_URLCODE
|
|
void urlrawdecode(char *urlbuf)
|
|
{
|
|
char c;
|
|
char *dst;
|
|
dst = urlbuf;
|
|
while ((c = *urlbuf))
|
|
{
|
|
if (c == '+')
|
|
{
|
|
c = ' ';
|
|
}
|
|
|
|
if (c == '%')
|
|
{
|
|
urlbuf++;
|
|
c = *urlbuf;
|
|
urlbuf++;
|
|
c = (h2int(c) << 4) | h2int(*urlbuf);
|
|
}
|
|
|
|
*dst = c;
|
|
dst++;
|
|
urlbuf++;
|
|
}
|
|
|
|
*dst = '\0';
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: urlrawencode
|
|
*
|
|
* Description:
|
|
* There must be enoug space in urlbuf. In the worst case that is 3 times
|
|
* the length of str
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CODECS_AVR_URLCODE
|
|
void urlrawencode(char *str, char *urlbuf)
|
|
{
|
|
char c;
|
|
while ((c = *str))
|
|
{
|
|
if (c == ' ' || isalnum(c) || c == '_' || c == '-' || c == '.' || c == '~')
|
|
{
|
|
if (c == ' ')
|
|
{
|
|
c = '+';
|
|
}
|
|
|
|
*urlbuf = c;
|
|
str++;
|
|
urlbuf++;
|
|
continue;
|
|
}
|
|
|
|
*urlbuf = '%';
|
|
urlbuf++;
|
|
int2h(c, urlbuf);
|
|
urlbuf++;
|
|
urlbuf++;
|
|
str++;
|
|
}
|
|
|
|
*urlbuf = '\0';
|
|
}
|
|
#endif
|