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Let has_cachedir_tag use malloc instead of a buffer on the stack.

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Petr Pudlak 2013-04-12 16:21:16 +02:00
parent 2784d82a9e
commit 1b1982e9af
1 changed files with 11 additions and 4 deletions
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15
src/exclude.c
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@ -104,16 +104,23 @@ void exclude_clear() {
* Exclusion of directories that contain only cached information.
* See http://www.brynosaurus.com/cachedir/
*/
#define CACHEDIR_TAG_FILENAME "CACHEDIR.TAG"
#define CACHEDIR_TAG_SIGNATURE "Signature: 8a477f597d28d172789f06886806bc55"
int has_cachedir_tag(const char *name) {
char buf[1024];
int path_l;
char *path;
const int signature_l = sizeof CACHEDIR_TAG_SIGNATURE - 1;
char buf[signature_l];
FILE *f;
int match = 0;
const int signature_l = sizeof CACHEDIR_TAG_SIGNATURE - 1;
snprintf(buf, sizeof(buf), "%s/CACHEDIR.TAG", name);
f = fopen(buf, "rb");
path_l = strlen(name) + sizeof CACHEDIR_TAG_FILENAME + 2;
path = malloc(path_l);
snprintf(path, path_l, "%s/%s", name, CACHEDIR_TAG_FILENAME);
f = fopen(path, "rb");
free(path);
if(f != NULL) {
match = ((fread(buf, 1, signature_l, f) == signature_l) &&
!memcmp(buf, CACHEDIR_TAG_SIGNATURE, signature_l));