res_stir_shaken: Use ast_asprintf for creating file path.

Change-Id: Ice5d92ecea2f1101c80487484f48ef98be2f1824

diff --git a/res/res_stir_shaken.c b/res/res_stir_shaken.c
index 3f795962016df213d9228c62c240d29671e87535..97fb17710e83a683dc0608645e4f6ad75b397689 100644 (file)
--- a/res/res_stir_shaken.c
+++ b/res/res_stir_shaken.c
@@ -462,9 +462,6 @@ struct ast_stir_shaken_payload *ast_stir_shaken_verify(const char *header, const
 
        /* If we don't have an entry in AstDB, CURL from the provided URL */
        if (ast_strlen_zero(file_path)) {
-
-               size_t file_path_size;
-
                /* Remove this entry from the database, since we will be
                 * downloading a new file anyways.
                 */
@@ -475,9 +472,9 @@ struct ast_stir_shaken_payload *ast_stir_shaken_verify(const char *header, const
 
                /* Set up the default path */
                filename = basename(public_key_url);
-               file_path_size = strlen(ast_config_AST_DATA_DIR) + 3 + strlen(STIR_SHAKEN_DIR_NAME) + strlen(filename) + 1;
-               file_path = ast_calloc(1, file_path_size);
-               snprintf(file_path, sizeof(*file_path), "%s/keys/%s/%s", ast_config_AST_DATA_DIR, STIR_SHAKEN_DIR_NAME, filename);
+               if (ast_asprintf(&file_path, "%s/keys/%s/%s", ast_config_AST_DATA_DIR, STIR_SHAKEN_DIR_NAME, filename) < 0) {
+                       return NULL;
+               }
 
                /* Download to the default path */
                if (run_curl(public_key_url, file_path)) {