Relintai/sdl2_frt
1
0
Fork 0
mirror of https://github.com/Relintai/sdl2_frt.git synced 2024-12-16 11:06:49 +01:00
Code Issues Packages Projects Releases Wiki Activity

os2/SDL_sysfilesystem.c: fix crash if one of the parameters is NULL

Browse Source 
Has been happening with testfilesystem from 2.0.6 and newer because
of commit 572a721879ef.

Also set error strings in certain error conditions.

Also applied coding style / whitespace fixes, while I was there.
This commit is contained in:
Ozkan Sezer 2020-10-14 23:01:03 +03:00
parent 222f026899
commit 5d89217f6b
1 changed files with 46 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

84
src/filesystem/os2/SDL_sysfilesystem.c
View File

@ -40,80 +40,88 @@ SDL_GetBasePath(void)
{ {
PTIB tib; PTIB tib;
PPIB pib; PPIB pib;
ULONG ulRC = DosGetInfoBlocks( &tib, &pib ); ULONG ulRC = DosGetInfoBlocks(&tib, &pib);
PCHAR pcEnd; PCHAR pcEnd;
ULONG cbResult; ULONG cbResult;
CHAR acBuf[_MAX_PATH]; CHAR acBuf[_MAX_PATH];
if ( ulRC != NO_ERROR ) if (ulRC != NO_ERROR) {
{ debug("DosGetInfoBlocks() failed, rc = %u", ulRC);
debug( "DosGetInfoBlocks() failed, rc = %u", ulRC );
return NULL; return NULL;
} }
pcEnd = SDL_strrchr( pib->pib_pchcmd, '\\' ); pcEnd = SDL_strrchr(pib->pib_pchcmd, '\\');
if ( pcEnd != NULL ) if (pcEnd != NULL)
pcEnd++; pcEnd++;
else else {
{ if (pib->pib_pchcmd[1] == ':')
if ( pib->pib_pchcmd[1] == ':' )
pcEnd = &pib->pib_pchcmd[2]; pcEnd = &pib->pib_pchcmd[2];
else else {
SDL_SetError("No path in pib->pib_pchcmd");
return NULL; return NULL;
}
} }
cbResult = pcEnd - pib->pib_pchcmd; cbResult = pcEnd - pib->pib_pchcmd;
SDL_memcpy( acBuf, pib->pib_pchcmd, cbResult ); SDL_memcpy(acBuf, pib->pib_pchcmd, cbResult);
acBuf[cbResult] = '\0'; acBuf[cbResult] = '\0';
return OS2_SysToUTF8( acBuf ); return OS2_SysToUTF8(acBuf);
} }
char * char *
SDL_GetPrefPath(const char *org, const char *app) SDL_GetPrefPath(const char *org, const char *app)
{ {
PSZ pszPath = SDL_getenv( "HOME" ); PSZ pszPath;
CHAR acBuf[_MAX_PATH]; CHAR acBuf[_MAX_PATH];
int lPosApp, lPosOrg; int lPosApp, lPosOrg;
PSZ pszApp, pszOrg = OS2_UTF8ToSys( org ); PSZ pszApp, pszOrg;
if ( pszOrg == NULL ) if (!app) {
{ SDL_InvalidParamError("app");
SDL_OutOfMemory();
return NULL;
}
if ( pszPath == NULL )
{
pszPath = SDL_getenv( "ETC" );
if ( pszPath == NULL )
return NULL; return NULL;
} }
lPosApp = SDL_snprintf( acBuf, sizeof(acBuf) - 1, "%s\\%s", pszPath, pszOrg ); pszPath = SDL_getenv( "HOME" );
SDL_free( pszOrg ); if (!pszPath) {
if ( lPosApp < 0 ) pszPath = SDL_getenv( "ETC" );
if (!pszPath) {
SDL_SetError("HOME or ETC environment not set");
return NULL;
}
}
if (!org) {
lPosApp = SDL_snprintf(acBuf, sizeof(acBuf) - 1, "%s", pszPath);
} else {
pszOrg = OS2_UTF8ToSys(org);
if (!pszOrg) {
SDL_OutOfMemory();
return NULL;
}
lPosApp = SDL_snprintf(acBuf, sizeof(acBuf) - 1, "%s\\%s", pszPath, pszOrg);
SDL_free(pszOrg);
}
if (lPosApp < 0)
return NULL; return NULL;
DosCreateDir( acBuf, NULL ); DosCreateDir(acBuf, NULL);
pszApp = OS2_UTF8ToSys( app ); pszApp = OS2_UTF8ToSys(app);
if ( pszApp == NULL ) if (!pszApp) {
{
SDL_OutOfMemory(); SDL_OutOfMemory();
return NULL; return NULL;
} }
lPosOrg = SDL_snprintf( &acBuf[lPosApp], sizeof(acBuf) - lPosApp - 1, "\\%s", lPosOrg = SDL_snprintf(&acBuf[lPosApp], sizeof(acBuf) - lPosApp - 1, "\\%s", pszApp);
pszApp ); SDL_free(pszApp);
SDL_free( pszApp ); if (lPosOrg < 0)
if ( lPosOrg < 0 )
return NULL; return NULL;
DosCreateDir( acBuf, NULL ); DosCreateDir(acBuf, NULL);
*((PUSHORT)&acBuf[lPosApp + lPosOrg]) = (USHORT)'\0\\'; *((PUSHORT)&acBuf[lPosApp + lPosOrg]) = (USHORT)'\0\\';
return OS2_SysToUTF8( acBuf ); return OS2_SysToUTF8(acBuf);
} }
#endif /* SDL_FILESYSTEM_OS2 */ #endif /* SDL_FILESYSTEM_OS2 */