diff options
| -rw-r--r-- | sha1_file.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/sha1_file.c b/sha1_file.c index 7698177488..384a43044e 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -1314,8 +1314,10 @@ unsigned long get_size_from_delta(struct packed_git *p, } while ((st == Z_OK || st == Z_BUF_ERROR) && stream.total_out < sizeof(delta_head)); inflateEnd(&stream); - if ((st != Z_STREAM_END) && stream.total_out != sizeof(delta_head)) - die("delta data unpack-initial failed"); + if ((st != Z_STREAM_END) && stream.total_out != sizeof(delta_head)) { + error("delta data unpack-initial failed"); + return 0; + } /* Examine the initial part of the delta to figure out * the result size. @@ -1382,15 +1384,29 @@ static int packed_delta_info(struct packed_git *p, off_t base_offset; base_offset = get_delta_base(p, w_curs, &curpos, type, obj_offset); + if (!base_offset) + return OBJ_BAD; type = packed_object_info(p, base_offset, NULL); + if (type <= OBJ_NONE) { + struct revindex_entry *revidx = find_pack_revindex(p, base_offset); + const unsigned char *base_sha1 = + nth_packed_object_sha1(p, revidx->nr); + mark_bad_packed_object(p, base_sha1); + type = sha1_object_info(base_sha1, NULL); + if (type <= OBJ_NONE) + return OBJ_BAD; + } /* We choose to only get the type of the base object and * ignore potentially corrupt pack file that expects the delta * based on a base with a wrong size. This saves tons of * inflate() calls. */ - if (sizep) + if (sizep) { *sizep = get_size_from_delta(p, w_curs, curpos); + if (*sizep == 0) + type = OBJ_BAD; + } return type; } @@ -1500,8 +1516,9 @@ static int packed_object_info(struct packed_git *p, off_t obj_offset, *sizep = size; break; default: - die("pack %s contains unknown object type %d", - p->pack_name, type); + error("unknown object type %i at offset %"PRIuMAX" in %s", + type, (uintmax_t)obj_offset, p->pack_name); + type = OBJ_BAD; } unuse_pack(&w_curs); return type; @@ -1971,7 +1988,14 @@ int sha1_object_info(const unsigned char *sha1, unsigned long *sizep) if (!find_pack_entry(sha1, &e, NULL)) return status; } - return packed_object_info(e.p, e.offset, sizep); + + status = packed_object_info(e.p, e.offset, sizep); + if (status < 0) { + mark_bad_packed_object(e.p, sha1); + status = sha1_object_info(sha1, sizep); + } + + return status; } static void *read_packed_sha1(const unsigned char *sha1, |