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SVN r4361

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Some protections against an empty basedir.
This commit is contained in:
Allofich
2020-09-12 00:00:12 +09:00
parent 32ea2e1497
commit 327e0d3788
1 changed files with 10 additions and 4 deletions
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14
src/dos/drive_cache.cpp
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@@ -65,6 +65,7 @@ DOS_Drive_Cache::DOS_Drive_Cache(void) {
save_dir = 0;
srchNr = 0;
label[0] = 0;
basePath[0] = 0;
nextFreeFindFirst = 0;
for (Bit32u i=0; i<MAX_OPENDIRS; i++) { dirSearch[i] = 0; dirFindFirst[i] = 0; }
SetDirSort(DIRALPHABETICAL);
@@ -76,6 +77,7 @@ DOS_Drive_Cache::DOS_Drive_Cache(const char* path, DOS_Drive *drive) {
save_dir = 0;
srchNr = 0;
label[0] = 0;
basePath[0] = 0;
nextFreeFindFirst = 0;
for (Bit32u i=0; i<MAX_OPENDIRS; i++) { dirSearch[i] = 0; dirFindFirst[i] = 0; }
SetDirSort(DIRALPHABETICAL);
@@ -100,7 +102,7 @@ void DOS_Drive_Cache::EmptyCache(void) {
dirBase = new CFileInfo;
save_dir = 0;
srchNr = 0;
SetBaseDir(basePath,drive);
if (basePath[0] != 0) SetBaseDir(basePath,drive);
}
void DOS_Drive_Cache::SetLabel(const char* vname,bool cdrom,bool allowupdate) {
@@ -124,11 +126,13 @@ Bit16u DOS_Drive_Cache::GetFreeID(CFileInfo* dir) {
}
}
LOG(LOG_FILES,LOG_NORMAL)("DIRCACHE: Too many open directories!");
dir->id=0;
dir->id = 0;
return 0;
}
void DOS_Drive_Cache::SetBaseDir(const char* baseDir, DOS_Drive *drive) {
if (strlen(baseDir) == 0) return;
Bit16u id;
strcpy(basePath,baseDir);
this->drive = drive;
@@ -610,7 +614,8 @@ void DOS_Drive_Cache::CreateShortName(CFileInfo* curDir, CFileInfo* info) {
// Create number
char buffer[8];
info->shortNr = CreateShortNameID(curDir,tmpName);
sprintf(buffer,"%d",(int)info->shortNr);
if (GCC_UNLIKELY(info->shortNr > 9999999)) E_Exit("~9999999 same name files overflow");
sprintf(buffer, "%d", static_cast<unsigned int>(info->shortNr));
// Copy first letters
Bits tocopy = 0;
size_t buflen = strlen(buffer);
@@ -760,7 +765,8 @@ bool DOS_Drive_Cache::OpenDir(CFileInfo* dir, const char* expand, Bit16u& id) {
char expandcopy [CROSS_LEN];
strcpy(expandcopy,expand);
// Add "/"
if (expandcopy[strlen(expandcopy)-1]!=CROSS_FILESPLIT) {
size_t expandcopylen = strlen(expandcopy);
if (expandcopylen > 0 && expandcopy[expandcopylen - 1] != CROSS_FILESPLIT) {
char end[2]={CROSS_FILESPLIT,0};
strcat(expandcopy,end);
}