diff options
Diffstat (limited to 'builtin-send-pack.c')
-rw-r--r-- | builtin-send-pack.c | 672 |
1 files changed, 0 insertions, 672 deletions
diff --git a/builtin-send-pack.c b/builtin-send-pack.c deleted file mode 100644 index d65d019692..0000000000 --- a/builtin-send-pack.c +++ /dev/null @@ -1,672 +0,0 @@ -#include "cache.h" -#include "commit.h" -#include "tag.h" -#include "refs.h" -#include "pkt-line.h" -#include "run-command.h" -#include "remote.h" -#include "send-pack.h" - -static const char send_pack_usage[] = -"git send-pack [--all | --mirror] [--dry-run] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n" -" --all and explicit <ref> specification are mutually exclusive."; - -static struct send_pack_args args = { - /* .receivepack = */ "git-receive-pack", -}; - -static int feed_object(const unsigned char *sha1, int fd, int negative) -{ - char buf[42]; - - if (negative && !has_sha1_file(sha1)) - return 1; - - memcpy(buf + negative, sha1_to_hex(sha1), 40); - if (negative) - buf[0] = '^'; - buf[40 + negative] = '\n'; - return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs"); -} - -/* - * Make a pack stream and spit it out into file descriptor fd - */ -static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *extra) -{ - /* - * The child becomes pack-objects --revs; we feed - * the revision parameters to it via its stdin and - * let its stdout go back to the other end. - */ - const char *argv[] = { - "pack-objects", - "--all-progress", - "--revs", - "--stdout", - NULL, - NULL, - }; - struct child_process po; - int i; - - if (args.use_thin_pack) - argv[4] = "--thin"; - memset(&po, 0, sizeof(po)); - po.argv = argv; - po.in = -1; - po.out = fd; - po.git_cmd = 1; - if (start_command(&po)) - die("git pack-objects failed (%s)", strerror(errno)); - - /* - * We feed the pack-objects we just spawned with revision - * parameters by writing to the pipe. - */ - for (i = 0; i < extra->nr; i++) - if (!feed_object(extra->array[i], po.in, 1)) - break; - - while (refs) { - if (!is_null_sha1(refs->old_sha1) && - !feed_object(refs->old_sha1, po.in, 1)) - break; - if (!is_null_sha1(refs->new_sha1) && - !feed_object(refs->new_sha1, po.in, 0)) - break; - refs = refs->next; - } - - close(po.in); - if (finish_command(&po)) - return error("pack-objects died with strange error"); - return 0; -} - -static void unmark_and_free(struct commit_list *list, unsigned int mark) -{ - while (list) { - struct commit_list *temp = list; - temp->item->object.flags &= ~mark; - list = temp->next; - free(temp); - } -} - -static int ref_newer(const unsigned char *new_sha1, - const unsigned char *old_sha1) -{ - struct object *o; - struct commit *old, *new; - struct commit_list *list, *used; - int found = 0; - - /* Both new and old must be commit-ish and new is descendant of - * old. Otherwise we require --force. - */ - o = deref_tag(parse_object(old_sha1), NULL, 0); - if (!o || o->type != OBJ_COMMIT) - return 0; - old = (struct commit *) o; - - o = deref_tag(parse_object(new_sha1), NULL, 0); - if (!o || o->type != OBJ_COMMIT) - return 0; - new = (struct commit *) o; - - if (parse_commit(new) < 0) - return 0; - - used = list = NULL; - commit_list_insert(new, &list); - while (list) { - new = pop_most_recent_commit(&list, 1); - commit_list_insert(new, &used); - if (new == old) { - found = 1; - break; - } - } - unmark_and_free(list, 1); - unmark_and_free(used, 1); - return found; -} - -static struct ref *local_refs, **local_tail; -static struct ref *remote_refs, **remote_tail; - -static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) -{ - struct ref *ref; - int len; - - /* we already know it starts with refs/ to get here */ - if (check_ref_format(refname + 5)) - return 0; - - len = strlen(refname) + 1; - ref = xcalloc(1, sizeof(*ref) + len); - hashcpy(ref->new_sha1, sha1); - memcpy(ref->name, refname, len); - *local_tail = ref; - local_tail = &ref->next; - return 0; -} - -static void get_local_heads(void) -{ - local_tail = &local_refs; - for_each_ref(one_local_ref, NULL); -} - -static int receive_status(int in, struct ref *refs) -{ - struct ref *hint; - char line[1000]; - int ret = 0; - int len = packet_read_line(in, line, sizeof(line)); - if (len < 10 || memcmp(line, "unpack ", 7)) - return error("did not receive remote status"); - if (memcmp(line, "unpack ok\n", 10)) { - char *p = line + strlen(line) - 1; - if (*p == '\n') - *p = '\0'; - error("unpack failed: %s", line + 7); - ret = -1; - } - hint = NULL; - while (1) { - char *refname; - char *msg; - len = packet_read_line(in, line, sizeof(line)); - if (!len) - break; - if (len < 3 || - (memcmp(line, "ok ", 3) && memcmp(line, "ng ", 3))) { - fprintf(stderr, "protocol error: %s\n", line); - ret = -1; - break; - } - - line[strlen(line)-1] = '\0'; - refname = line + 3; - msg = strchr(refname, ' '); - if (msg) - *msg++ = '\0'; - - /* first try searching at our hint, falling back to all refs */ - if (hint) - hint = find_ref_by_name(hint, refname); - if (!hint) - hint = find_ref_by_name(refs, refname); - if (!hint) { - warning("remote reported status on unknown ref: %s", - refname); - continue; - } - if (hint->status != REF_STATUS_EXPECTING_REPORT) { - warning("remote reported status on unexpected ref: %s", - refname); - continue; - } - - if (line[0] == 'o' && line[1] == 'k') - hint->status = REF_STATUS_OK; - else { - hint->status = REF_STATUS_REMOTE_REJECT; - ret = -1; - } - if (msg) - hint->remote_status = xstrdup(msg); - /* start our next search from the next ref */ - hint = hint->next; - } - return ret; -} - -static void update_tracking_ref(struct remote *remote, struct ref *ref) -{ - struct refspec rs; - - if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE) - return; - - rs.src = ref->name; - rs.dst = NULL; - - if (!remote_find_tracking(remote, &rs)) { - if (args.verbose) - fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst); - if (ref->deletion) { - delete_ref(rs.dst, NULL, 0); - } else - update_ref("update by push", rs.dst, - ref->new_sha1, NULL, 0, 0); - free(rs.dst); - } -} - -static const char *prettify_ref(const struct ref *ref) -{ - const char *name = ref->name; - return name + ( - !prefixcmp(name, "refs/heads/") ? 11 : - !prefixcmp(name, "refs/tags/") ? 10 : - !prefixcmp(name, "refs/remotes/") ? 13 : - 0); -} - -#define SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3) - -static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg) -{ - fprintf(stderr, " %c %-*s ", flag, SUMMARY_WIDTH, summary); - if (from) - fprintf(stderr, "%s -> %s", prettify_ref(from), prettify_ref(to)); - else - fputs(prettify_ref(to), stderr); - if (msg) { - fputs(" (", stderr); - fputs(msg, stderr); - fputc(')', stderr); - } - fputc('\n', stderr); -} - -static const char *status_abbrev(unsigned char sha1[20]) -{ - return find_unique_abbrev(sha1, DEFAULT_ABBREV); -} - -static void print_ok_ref_status(struct ref *ref) -{ - if (ref->deletion) - print_ref_status('-', "[deleted]", ref, NULL, NULL); - else if (is_null_sha1(ref->old_sha1)) - print_ref_status('*', - (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" : - "[new branch]"), - ref, ref->peer_ref, NULL); - else { - char quickref[84]; - char type; - const char *msg; - - strcpy(quickref, status_abbrev(ref->old_sha1)); - if (ref->nonfastforward) { - strcat(quickref, "..."); - type = '+'; - msg = "forced update"; - } else { - strcat(quickref, ".."); - type = ' '; - msg = NULL; - } - strcat(quickref, status_abbrev(ref->new_sha1)); - - print_ref_status(type, quickref, ref, ref->peer_ref, msg); - } -} - -static int print_one_push_status(struct ref *ref, const char *dest, int count) -{ - if (!count) - fprintf(stderr, "To %s\n", dest); - - switch(ref->status) { - case REF_STATUS_NONE: - print_ref_status('X', "[no match]", ref, NULL, NULL); - break; - case REF_STATUS_REJECT_NODELETE: - print_ref_status('!', "[rejected]", ref, NULL, - "remote does not support deleting refs"); - break; - case REF_STATUS_UPTODATE: - print_ref_status('=', "[up to date]", ref, - ref->peer_ref, NULL); - break; - case REF_STATUS_REJECT_NONFASTFORWARD: - print_ref_status('!', "[rejected]", ref, ref->peer_ref, - "non-fast forward"); - break; - case REF_STATUS_REMOTE_REJECT: - print_ref_status('!', "[remote rejected]", ref, - ref->deletion ? NULL : ref->peer_ref, - ref->remote_status); - break; - case REF_STATUS_EXPECTING_REPORT: - print_ref_status('!', "[remote failure]", ref, - ref->deletion ? NULL : ref->peer_ref, - "remote failed to report status"); - break; - case REF_STATUS_OK: - print_ok_ref_status(ref); - break; - } - - return 1; -} - -static void print_push_status(const char *dest, struct ref *refs) -{ - struct ref *ref; - int n = 0; - - if (args.verbose) { - for (ref = refs; ref; ref = ref->next) - if (ref->status == REF_STATUS_UPTODATE) - n += print_one_push_status(ref, dest, n); - } - - for (ref = refs; ref; ref = ref->next) - if (ref->status == REF_STATUS_OK) - n += print_one_push_status(ref, dest, n); - - for (ref = refs; ref; ref = ref->next) { - if (ref->status != REF_STATUS_NONE && - ref->status != REF_STATUS_UPTODATE && - ref->status != REF_STATUS_OK) - n += print_one_push_status(ref, dest, n); - } -} - -static int refs_pushed(struct ref *ref) -{ - for (; ref; ref = ref->next) { - switch(ref->status) { - case REF_STATUS_NONE: - case REF_STATUS_UPTODATE: - break; - default: - return 1; - } - } - return 0; -} - -static int do_send_pack(int in, int out, struct remote *remote, const char *dest, int nr_refspec, const char **refspec) -{ - struct ref *ref; - int new_refs; - int ask_for_status_report = 0; - int allow_deleting_refs = 0; - int expect_status_report = 0; - int flags = MATCH_REFS_NONE; - int ret; - struct extra_have_objects extra_have; - - memset(&extra_have, 0, sizeof(extra_have)); - if (args.send_all) - flags |= MATCH_REFS_ALL; - if (args.send_mirror) - flags |= MATCH_REFS_MIRROR; - - /* No funny business with the matcher */ - remote_tail = get_remote_heads(in, &remote_refs, 0, NULL, REF_NORMAL, - &extra_have); - get_local_heads(); - - /* Does the other end support the reporting? */ - if (server_supports("report-status")) - ask_for_status_report = 1; - if (server_supports("delete-refs")) - allow_deleting_refs = 1; - - /* match them up */ - if (!remote_tail) - remote_tail = &remote_refs; - if (match_refs(local_refs, remote_refs, &remote_tail, - nr_refspec, refspec, flags)) { - close(out); - return -1; - } - - if (!remote_refs) { - fprintf(stderr, "No refs in common and none specified; doing nothing.\n" - "Perhaps you should specify a branch such as 'master'.\n"); - close(out); - return 0; - } - - /* - * Finally, tell the other end! - */ - new_refs = 0; - for (ref = remote_refs; ref; ref = ref->next) { - - if (ref->peer_ref) - hashcpy(ref->new_sha1, ref->peer_ref->new_sha1); - else if (!args.send_mirror) - continue; - - ref->deletion = is_null_sha1(ref->new_sha1); - if (ref->deletion && !allow_deleting_refs) { - ref->status = REF_STATUS_REJECT_NODELETE; - continue; - } - if (!ref->deletion && - !hashcmp(ref->old_sha1, ref->new_sha1)) { - ref->status = REF_STATUS_UPTODATE; - continue; - } - - /* This part determines what can overwrite what. - * The rules are: - * - * (0) you can always use --force or +A:B notation to - * selectively force individual ref pairs. - * - * (1) if the old thing does not exist, it is OK. - * - * (2) if you do not have the old thing, you are not allowed - * to overwrite it; you would not know what you are losing - * otherwise. - * - * (3) if both new and old are commit-ish, and new is a - * descendant of old, it is OK. - * - * (4) regardless of all of the above, removing :B is - * always allowed. - */ - - ref->nonfastforward = - !ref->deletion && - !is_null_sha1(ref->old_sha1) && - (!has_sha1_file(ref->old_sha1) - || !ref_newer(ref->new_sha1, ref->old_sha1)); - - if (ref->nonfastforward && !ref->force && !args.force_update) { - ref->status = REF_STATUS_REJECT_NONFASTFORWARD; - continue; - } - - if (!ref->deletion) - new_refs++; - - if (!args.dry_run) { - char *old_hex = sha1_to_hex(ref->old_sha1); - char *new_hex = sha1_to_hex(ref->new_sha1); - - if (ask_for_status_report) { - packet_write(out, "%s %s %s%c%s", - old_hex, new_hex, ref->name, 0, - "report-status"); - ask_for_status_report = 0; - expect_status_report = 1; - } - else - packet_write(out, "%s %s %s", - old_hex, new_hex, ref->name); - } - ref->status = expect_status_report ? - REF_STATUS_EXPECTING_REPORT : - REF_STATUS_OK; - } - - packet_flush(out); - if (new_refs && !args.dry_run) { - if (pack_objects(out, remote_refs, &extra_have) < 0) - return -1; - } - else - close(out); - - if (expect_status_report) - ret = receive_status(in, remote_refs); - else - ret = 0; - - print_push_status(dest, remote_refs); - - if (!args.dry_run && remote) { - for (ref = remote_refs; ref; ref = ref->next) - update_tracking_ref(remote, ref); - } - - if (!refs_pushed(remote_refs)) - fprintf(stderr, "Everything up-to-date\n"); - if (ret < 0) - return ret; - for (ref = remote_refs; ref; ref = ref->next) { - switch (ref->status) { - case REF_STATUS_NONE: - case REF_STATUS_UPTODATE: - case REF_STATUS_OK: - break; - default: - return -1; - } - } - return 0; -} - -static void verify_remote_names(int nr_heads, const char **heads) -{ - int i; - - for (i = 0; i < nr_heads; i++) { - const char *local = heads[i]; - const char *remote = strrchr(heads[i], ':'); - - if (*local == '+') - local++; - - /* A matching refspec is okay. */ - if (remote == local && remote[1] == '\0') - continue; - - remote = remote ? (remote + 1) : local; - switch (check_ref_format(remote)) { - case 0: /* ok */ - case CHECK_REF_FORMAT_ONELEVEL: - /* ok but a single level -- that is fine for - * a match pattern. - */ - case CHECK_REF_FORMAT_WILDCARD: - /* ok but ends with a pattern-match character */ - continue; - } - die("remote part of refspec is not a valid name in %s", - heads[i]); - } -} - -int cmd_send_pack(int argc, const char **argv, const char *prefix) -{ - int i, nr_heads = 0; - const char **heads = NULL; - const char *remote_name = NULL; - struct remote *remote = NULL; - const char *dest = NULL; - - argv++; - for (i = 1; i < argc; i++, argv++) { - const char *arg = *argv; - - if (*arg == '-') { - if (!prefixcmp(arg, "--receive-pack=")) { - args.receivepack = arg + 15; - continue; - } - if (!prefixcmp(arg, "--exec=")) { - args.receivepack = arg + 7; - continue; - } - if (!prefixcmp(arg, "--remote=")) { - remote_name = arg + 9; - continue; - } - if (!strcmp(arg, "--all")) { - args.send_all = 1; - continue; - } - if (!strcmp(arg, "--dry-run")) { - args.dry_run = 1; - continue; - } - if (!strcmp(arg, "--mirror")) { - args.send_mirror = 1; - continue; - } - if (!strcmp(arg, "--force")) { - args.force_update = 1; - continue; - } - if (!strcmp(arg, "--verbose")) { - args.verbose = 1; - continue; - } - if (!strcmp(arg, "--thin")) { - args.use_thin_pack = 1; - continue; - } - usage(send_pack_usage); - } - if (!dest) { - dest = arg; - continue; - } - heads = (const char **) argv; - nr_heads = argc - i; - break; - } - if (!dest) - usage(send_pack_usage); - /* - * --all and --mirror are incompatible; neither makes sense - * with any refspecs. - */ - if ((heads && (args.send_all || args.send_mirror)) || - (args.send_all && args.send_mirror)) - usage(send_pack_usage); - - if (remote_name) { - remote = remote_get(remote_name); - if (!remote_has_url(remote, dest)) { - die("Destination %s is not a uri for %s", - dest, remote_name); - } - } - - return send_pack(&args, dest, remote, nr_heads, heads); -} - -int send_pack(struct send_pack_args *my_args, - const char *dest, struct remote *remote, - int nr_heads, const char **heads) -{ - int fd[2], ret; - struct child_process *conn; - - memcpy(&args, my_args, sizeof(args)); - - verify_remote_names(nr_heads, heads); - - conn = git_connect(fd, dest, args.receivepack, args.verbose ? CONNECT_VERBOSE : 0); - ret = do_send_pack(fd[0], fd[1], remote, dest, nr_heads, heads); - close(fd[0]); - /* do_send_pack always closes fd[1] */ - ret |= finish_connect(conn); - return !!ret; -} |