utils: Fix bad malloc result check in buffer_read_from_filename and t…

…est arguments for NULL
alexR89 · Oct 19, 2021 · 7c37434 · 7c37434
1 parent 499a557
commit 7c37434
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/src/utils.c b/src/utils.c
@@ -257,6 +257,10 @@ LIBIMOBILEDEVICE_GLUE_API int buffer_read_from_filename(const char *filename, ch
 	FILE *f;
 	uint64_t size;
 
+	if (!filename || !buffer || !length) {
+		return 0;
+	}
+
 	*length = 0;
 
 	f = fopen(filename, "rb");
@@ -275,7 +279,7 @@ LIBIMOBILEDEVICE_GLUE_API int buffer_read_from_filename(const char *filename, ch
 
 	*buffer = (char*)malloc(sizeof(char)*(size+1));
 
-	if (!buffer) {
+	if (*buffer == NULL) {
 		return 0;
 	}