- }
- return -1;
-}
-
-static int get_old_sha1(const char *refname, unsigned char *sha1)
-{
- static char pathname[PATH_MAX];
- const char *git_dir;
- int fd, ret;
-
- git_dir = gitenv(GIT_DIR_ENVIRONMENT) ? : DEFAULT_GIT_DIR_ENVIRONMENT;
- snprintf(pathname, sizeof(pathname), "%s/%s", git_dir, refname);
- fd = open(pathname, O_RDONLY);
- ret = -1;
- if (fd >= 0) {
- char buffer[60];
- if (read(fd, buffer, sizeof(buffer)) >= 40)
- ret = get_sha1_hex(buffer, sha1);
- close(fd);
- }
- return ret;
-}
-
-static int check_ref(const char *refname, const unsigned char *sha1)
-{
- unsigned char mysha1[20];
- char oldhex[41];
-
- if (get_old_sha1(refname, mysha1) < 0)
- memset(mysha1, 0, 20);
-
- if (!memcmp(sha1, mysha1, 20)) {
- printf("%s: unchanged\n", refname);
- return 0;
- }
-
- memcpy(oldhex, sha1_to_hex(mysha1), 41);
- printf("%s: %s (%s)\n", refname, sha1_to_hex(sha1), oldhex);
- return 1;
-}
-
-static int get_remote_heads(int fd, int nr_match, char **match, unsigned char *result)
-{
- int count = 0;
-
- for (;;) {
- static char line[1000];
- unsigned char sha1[20];
- char *refname;
- int len;
-
- len = packet_read_line(fd, line, sizeof(line));
- if (!len)
- break;
- if (line[len-1] == '\n')
- line[--len] = 0;
- if (len < 42 || get_sha1_hex(line, sha1))
- die("git-fetch-pack: protocol error - expected ref descriptor, got '%sä'", line);
- refname = line+41;
- if (nr_match && !path_match(refname, nr_match, match))
- continue;
- if (check_ref(refname, sha1)) {
- count++;
- memcpy(result, sha1, 20);