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WINGs: Bounded string ops

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Signed-off-by: Tamas TEVESZ <ice@extreme.hu>
This commit is contained in:
Tamas TEVESZ
2010-09-28 22:25:44 +02:00
committed by Carlos R. Mafra
parent 300d02bf54
commit 14863cd3b1
10 changed files with 240 additions and 116 deletions
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45
WINGs/wapplication.c
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@@ -65,30 +65,41 @@ static char *checkFile(char *path, char *folder, char *ext, char *resource)
{
char *ret;
int extralen;
size_t slen;
if (!path || !resource)
return NULL;
extralen = (ext ? strlen(ext) : 0) + (folder ? strlen(folder) : 0) + 4;
ret = wmalloc(strlen(path) + strlen(resource) + extralen + 8);
strcpy(ret, path);
if (folder) {
strcat(ret, "/");
strcat(ret, folder);
}
if (ext) {
strcat(ret, "/");
strcat(ret, ext);
}
strcat(ret, "/");
strcat(ret, resource);
extralen = (ext ? strlen(ext) + 1 : 0) + (folder ? strlen(folder) + 1 : 0) + 1;
slen = strlen(path) + strlen(resource) + 1 + extralen;
ret = wmalloc(slen);
if (access(ret, F_OK) != 0) {
wfree(ret);
ret = NULL;
}
if (strlcpy(ret, path, slen) >= slen)
goto error;
if (folder &&
(wstrlcat(ret, "/", slen) >= slen ||
wstrlcat(ret, folder, slen) >= slen))
goto error;
if (ext &&
(wstrlcat(ret, "/", slen) >= slen ||
wstrlcat(ret, ext, slen) >= slen))
goto error;
if (wstrlcat(ret, "/", slen) >= slen ||
wstrlcat(ret, resource, slen) >= slen)
goto error;
if (access(ret, F_OK) != 0)
goto error;
return ret;
error:
if (ret)
wfree(ret);
return NULL;
}
char *WMPathForResourceOfType(char *resource, char *ext)