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Merge branch 'jk/validate-headref-fix' into maint 

Code clean-up.

* jk/validate-headref-fix:
  validate_headref: use get_oid_hex for detached HEADs
  validate_headref: use skip_prefix for symref parsing
  validate_headref: NUL-terminate HEAD buffer
This commit is contained in:
Junio C Hamano 2017-10-18 14:19:12 +09:00
parent 7f607f6bfb 0bca165fdb
commit 41052b11bc
1 changed files with 12 additions and 11 deletions
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23
path.c
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@ -635,8 +635,9 @@ void strbuf_git_common_path(struct strbuf *sb,
int validate_headref(const char *path)
{
struct stat st;
char *buf, buffer[256];
unsigned char sha1[20];
char buffer[256];
const char *refname;
struct object_id oid;
int fd;
ssize_t len;
@ -660,24 +661,24 @@ int validate_headref(const char *path)
len = read_in_full(fd, buffer, sizeof(buffer)-1);
close(fd);
if (len < 0)
return -1;
buffer[len] = '\0';
/*
* Is it a symbolic ref?
*/
if (len < 4)
return -1;
if (!memcmp("ref:", buffer, 4)) {
buf = buffer + 4;
len -= 4;
while (len && isspace(*buf))
buf++, len--;
if (len >= 5 && !memcmp("refs/", buf, 5))
if (skip_prefix(buffer, "ref:", &refname)) {
while (isspace(*refname))
refname++;
if (starts_with(refname, "refs/"))
return 0;
}
/*
* Is this a detached HEAD?
*/
if (!get_sha1_hex(buffer, sha1))
if (!get_oid_hex(buffer, &oid))
return 0;
return -1;