5 static const char send_pack_usage[] =
6 "git-send-pack [--exec=git-receive-pack] [host:]directory [heads]*";
7 static const char *exec = "git-receive-pack";
8 static int send_all = 0;
10 static int is_zero_sha1(const unsigned char *sha1)
14 for (i = 0; i < 20; i++) {
21 static void exec_pack_objects(void)
23 static char *args[] = {
28 execvp("git-pack-objects", args);
29 die("git-pack-objects exec failed (%s)", strerror(errno));
32 static void exec_rev_list(struct ref *refs)
34 static char *args[1000];
37 args[i++] = "git-rev-list"; /* 0 */
38 args[i++] = "--objects"; /* 1 */
40 char *buf = malloc(100);
42 die("git-rev-list environment overflow");
43 if (!is_zero_sha1(refs->old_sha1)) {
45 snprintf(buf, 50, "^%s", sha1_to_hex(refs->old_sha1));
48 if (!is_zero_sha1(refs->new_sha1)) {
50 snprintf(buf, 50, "%s", sha1_to_hex(refs->new_sha1));
55 execvp("git-rev-list", args);
56 die("git-rev-list exec failed (%s)", strerror(errno));
59 static void rev_list(int fd, struct ref *refs)
62 pid_t pack_objects_pid;
64 if (pipe(pipe_fd) < 0)
65 die("rev-list setup: pipe failed");
66 pack_objects_pid = fork();
67 if (!pack_objects_pid) {
74 die("pack-objects setup failed");
76 if (pack_objects_pid < 0)
77 die("pack-objects fork failed");
85 static int pack_objects(int fd, struct ref *refs)
89 rev_list_pid = fork();
92 die("rev-list setup failed");
95 die("rev-list fork failed");
97 * We don't wait for the rev-list pipeline in the parent:
98 * we end up waiting for the other end instead
103 static int read_ref(const char *ref, unsigned char *sha1)
108 fd = open(git_path("%s", ref), O_RDONLY);
112 if (read(fd, buffer, sizeof(buffer)) >= 40)
113 ret = get_sha1_hex(buffer, sha1);
118 static int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1)
120 if (!has_sha1_file(old_sha1))
123 * FIXME! It is not correct to say that the new one is newer
124 * just because we don't have the old one!
126 * We should really see if we can reach the old_sha1 commit
127 * from the new_sha1 one.
132 static int local_ref_nr_match;
133 static char **local_ref_match;
134 static struct ref *local_ref_list;
135 static struct ref **local_last_ref;
137 static int try_to_match(const char *refname, const unsigned char *sha1)
142 if (!path_match(refname, local_ref_nr_match, local_ref_match)) {
146 /* If we have it listed already, skip it */
147 for (ref = local_ref_list ; ref ; ref = ref->next) {
148 if (!strcmp(ref->name, refname))
153 len = strlen(refname)+1;
154 ref = xmalloc(sizeof(*ref) + len);
155 memset(ref->old_sha1, 0, 20);
156 memcpy(ref->new_sha1, sha1, 20);
157 memcpy(ref->name, refname, len);
159 *local_last_ref = ref;
160 local_last_ref = &ref->next;
164 static int send_pack(int in, int out, int nr_match, char **match)
166 struct ref *ref_list, **last_ref;
170 /* First we get all heads, whether matching or not.. */
171 last_ref = get_remote_heads(in, &ref_list, 0, NULL);
174 * Go through the refs, see if we want to update
177 for (ref = ref_list; ref; ref = ref->next) {
178 unsigned char new_sha1[20];
179 char *name = ref->name;
181 if (nr_match && !path_match(name, nr_match, match))
184 if (read_ref(name, new_sha1) < 0)
187 if (!memcmp(ref->old_sha1, new_sha1, 20)) {
188 fprintf(stderr, "'%s' unchanged\n", name);
192 if (!ref_newer(new_sha1, ref->old_sha1)) {
193 error("remote '%s' points to object I don't have", name);
197 /* Ok, mark it for update */
198 memcpy(ref->new_sha1, new_sha1, 20);
202 * See if we have any refs that the other end didn't have
205 local_ref_nr_match = nr_match;
206 local_ref_match = match;
207 local_ref_list = ref_list;
208 local_last_ref = last_ref;
209 for_each_ref(try_to_match);
213 * Finally, tell the other end!
216 for (ref = ref_list; ref; ref = ref->next) {
217 char old_hex[60], *new_hex;
218 if (is_zero_sha1(ref->new_sha1))
221 strcpy(old_hex, sha1_to_hex(ref->old_sha1));
222 new_hex = sha1_to_hex(ref->new_sha1);
223 packet_write(out, "%s %s %s", old_hex, new_hex, ref->name);
224 fprintf(stderr, "'%s': updating from %s to %s\n", ref->name, old_hex, new_hex);
229 pack_objects(out, ref_list);
234 int main(int argc, char **argv)
243 for (i = 1; i < argc; i++, argv++) {
247 if (!strncmp(arg, "--exec=", 7)) {
251 if (!strcmp(arg, "--all")) {
255 usage(send_pack_usage);
266 usage(send_pack_usage);
267 pid = git_connect(fd, dest, exec);
270 ret = send_pack(fd[0], fd[1], nr_heads, heads);