| #include "cache.h" |
| #include "commit.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; |
| |
| 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, struct send_pack_args *args) |
| { |
| /* |
| * 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, |
| NULL, |
| NULL, |
| }; |
| struct child_process po; |
| int i; |
| |
| i = 4; |
| if (args->use_thin_pack) |
| argv[i++] = "--thin"; |
| if (args->use_ofs_delta) |
| argv[i++] = "--delta-base-offset"; |
| if (args->quiet) |
| argv[i++] = "-q"; |
| memset(&po, 0, sizeof(po)); |
| po.argv = argv; |
| po.in = -1; |
| po.out = fd; |
| po.git_cmd = 1; |
| if (start_command(&po)) |
| die_errno("git pack-objects failed"); |
| |
| /* |
| * 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 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); |
| } |
| } |
| |
| #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_refname(from->name), prettify_refname(to->name)); |
| else |
| fputs(prettify_refname(to->name), 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; |
| } |
| |
| int send_pack(struct send_pack_args *args, |
| int fd[], struct child_process *conn, |
| struct ref *remote_refs, |
| struct extra_have_objects *extra_have) |
| { |
| int in = fd[0]; |
| int out = fd[1]; |
| struct ref *ref; |
| int new_refs; |
| int ask_for_status_report = 0; |
| int allow_deleting_refs = 0; |
| int expect_status_report = 0; |
| int ret; |
| |
| /* 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; |
| if (server_supports("ofs-delta")) |
| args->use_ofs_delta = 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"); |
| 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, args) < 0) { |
| for (ref = remote_refs; ref; ref = ref->next) |
| ref->status = REF_STATUS_NONE; |
| return -1; |
| } |
| } |
| |
| if (expect_status_report) |
| ret = receive_status(in, remote_refs); |
| else |
| ret = 0; |
| |
| 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_refspecs = 0; |
| const char **refspecs = NULL; |
| const char *remote_name = NULL; |
| struct remote *remote = NULL; |
| const char *dest = NULL; |
| int fd[2]; |
| struct child_process *conn; |
| struct extra_have_objects extra_have; |
| struct ref *remote_refs, *local_refs; |
| int ret; |
| int send_all = 0; |
| const char *receivepack = "git-receive-pack"; |
| int flags; |
| |
| argv++; |
| for (i = 1; i < argc; i++, argv++) { |
| const char *arg = *argv; |
| |
| if (*arg == '-') { |
| if (!prefixcmp(arg, "--receive-pack=")) { |
| receivepack = arg + 15; |
| continue; |
| } |
| if (!prefixcmp(arg, "--exec=")) { |
| receivepack = arg + 7; |
| continue; |
| } |
| if (!prefixcmp(arg, "--remote=")) { |
| remote_name = arg + 9; |
| continue; |
| } |
| if (!strcmp(arg, "--all")) { |
| 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; |
| } |
| refspecs = (const char **) argv; |
| nr_refspecs = argc - i; |
| break; |
| } |
| if (!dest) |
| usage(send_pack_usage); |
| /* |
| * --all and --mirror are incompatible; neither makes sense |
| * with any refspecs. |
| */ |
| if ((refspecs && (send_all || args.send_mirror)) || |
| (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); |
| } |
| } |
| |
| conn = git_connect(fd, dest, receivepack, args.verbose ? CONNECT_VERBOSE : 0); |
| |
| memset(&extra_have, 0, sizeof(extra_have)); |
| |
| get_remote_heads(fd[0], &remote_refs, 0, NULL, REF_NORMAL, |
| &extra_have); |
| |
| verify_remote_names(nr_refspecs, refspecs); |
| |
| local_refs = get_local_heads(); |
| |
| flags = MATCH_REFS_NONE; |
| |
| if (send_all) |
| flags |= MATCH_REFS_ALL; |
| if (args.send_mirror) |
| flags |= MATCH_REFS_MIRROR; |
| |
| /* match them up */ |
| if (match_refs(local_refs, &remote_refs, nr_refspecs, refspecs, flags)) |
| return -1; |
| |
| ret = send_pack(&args, fd, conn, remote_refs, &extra_have); |
| |
| close(fd[1]); |
| close(fd[0]); |
| |
| ret |= finish_connect(conn); |
| |
| print_push_status(dest, remote_refs); |
| |
| if (!args.dry_run && remote) { |
| struct ref *ref; |
| for (ref = remote_refs; ref; ref = ref->next) |
| update_tracking_ref(remote, ref); |
| } |
| |
| if (!ret && !refs_pushed(remote_refs)) |
| fprintf(stderr, "Everything up-to-date\n"); |
| |
| return ret; |
| } |