Extract verify_pack_index for reuse from verify_pack

The dumb HTTP transport should verify an index is completely valid
before trying to use it.  That requires checking the header/footer
but also checking the complete content SHA-1.  All of this logic is
already in the front half of verify_pack, so pull it out into a new
function that can be reused.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Shawn O. Pearce 2010-04-19 07:23:07 -07:00 коммит произвёл Junio C Hamano
Родитель fa5fc15d6e
Коммит 9b0aa72870
2 изменённых файлов: 13 добавлений и 3 удалений

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@ -133,14 +133,13 @@ static int verify_packfile(struct packed_git *p,
return err;
}
int verify_pack(struct packed_git *p)
int verify_pack_index(struct packed_git *p)
{
off_t index_size;
const unsigned char *index_base;
git_SHA_CTX ctx;
unsigned char sha1[20];
int err = 0;
struct pack_window *w_curs = NULL;
if (open_pack_index(p))
return error("packfile %s index not opened", p->pack_name);
@ -154,8 +153,18 @@ int verify_pack(struct packed_git *p)
if (hashcmp(sha1, index_base + index_size - 20))
err = error("Packfile index for %s SHA1 mismatch",
p->pack_name);
return err;
}
int verify_pack(struct packed_git *p)
{
int err = 0;
struct pack_window *w_curs = NULL;
err |= verify_pack_index(p);
if (!p->index_data)
return -1;
/* Verify pack file */
err |= verify_packfile(p, &w_curs);
unuse_pack(&w_curs);

1
pack.h
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@ -57,6 +57,7 @@ struct pack_idx_entry {
extern const char *write_idx_file(const char *index_name, struct pack_idx_entry **objects, int nr_objects, unsigned char *sha1);
extern int check_pack_crc(struct packed_git *p, struct pack_window **w_curs, off_t offset, off_t len, unsigned int nr);
extern int verify_pack_index(struct packed_git *);
extern int verify_pack(struct packed_git *);
extern void fixup_pack_header_footer(int, unsigned char *, const char *, uint32_t, unsigned char *, off_t);
extern char *index_pack_lockfile(int fd);