diff options
| -rw-r--r-- | commit-tree.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/commit-tree.c b/commit-tree.c index 50fe196..b209575 100644 --- a/commit-tree.c +++ b/commit-tree.c @@ -240,6 +240,18 @@ static void parse_rfc2822_date(char *date, char *result, int maxlen) snprintf(result, maxlen, "%lu %5.5s", then, p); } +static void check_valid(unsigned char *sha1, const char *expect) +{ + void *buf; + char type[20]; + unsigned long size; + + buf = read_sha1_file(sha1, type, &size); + if (!buf || strcmp(type, expect)) + die("%s is not a valid '%s' object", sha1_to_hex(sha1), expect); + free(buf); +} + /* * Having more than two parents may be strange, but hey, there's * no conceptual reason why the file format couldn't accept multi-way @@ -271,11 +283,13 @@ int main(int argc, char **argv) if (argc < 2 || get_sha1_hex(argv[1], tree_sha1) < 0) usage("commit-tree <sha1> [-p <sha1>]* < changelog"); + check_valid(tree_sha1, "tree"); for (i = 2; i < argc; i += 2) { char *a, *b; a = argv[i]; b = argv[i+1]; if (!b || strcmp(a, "-p") || get_sha1_hex(b, parent_sha1[parents])) usage("commit-tree <sha1> [-p <sha1>]* < changelog"); + check_valid(parent_sha1[parents], "commit"); parents++; } if (!parents) |