#include "cache.h" #include "refs.h" #include "pkt-line.h" #include "sideband.h" #include "tag.h" #include "object.h" #include "commit.h" #include "exec_cmd.h" #include "diff.h" #include "revision.h" #include "list-objects.h" #include "run-command.h" #include "connect.h" #include "sigchain.h" #include "version.h" #include "string-list.h" #include "parse-options.h" #include "argv-array.h" #include "prio-queue.h" static const char * const upload_pack_usage[] = { N_("git upload-pack [<options>] <dir>"), NULL }; /* Remember to update object flag allocation in object.h */ #define THEY_HAVE (1u << 11) #define OUR_REF (1u << 12) #define WANTED (1u << 13) #define COMMON_KNOWN (1u << 14) #define REACHABLE (1u << 15) #define SHALLOW (1u << 16) #define NOT_SHALLOW (1u << 17) #define CLIENT_SHALLOW (1u << 18) #define HIDDEN_REF (1u << 19) static unsigned long oldest_have; static int deepen_relative; static int multi_ack; static int no_done; static int use_thin_pack, use_ofs_delta, use_include_tag; static int no_progress, daemon_mode; /* Allow specifying sha1 if it is a ref tip. */ #define ALLOW_TIP_SHA1 01 /* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */ #define ALLOW_REACHABLE_SHA1 02 /* Allow request of any sha1. Implies ALLOW_TIP_SHA1 and ALLOW_REACHABLE_SHA1. */ #define ALLOW_ANY_SHA1 07 static unsigned int allow_unadvertised_object_request; static int shallow_nr; static struct object_array have_obj; static struct object_array want_obj; static struct object_array extra_edge_obj; static unsigned int timeout; static int keepalive = 5; /* 0 for no sideband, * otherwise maximum packet size (up to 65520 bytes). */ static int use_sideband; static int advertise_refs; static int stateless_rpc; static const char *pack_objects_hook; static void reset_timeout(void) { alarm(timeout); } static void send_client_data(int fd, const char *data, ssize_t sz) { if (use_sideband) { send_sideband(1, fd, data, sz, use_sideband); return; } if (fd == 3) /* emergency quit */ fd = 2; if (fd == 2) { /* XXX: are we happy to lose stuff here? */ xwrite(fd, data, sz); return; } write_or_die(fd, data, sz); } static int write_one_shallow(const struct commit_graft *graft, void *cb_data) { FILE *fp = cb_data; if (graft->nr_parent == -1) fprintf(fp, "--shallow %s\n", oid_to_hex(&graft->oid)); return 0; } static void create_pack_file(void) { struct child_process pack_objects = CHILD_PROCESS_INIT; char data[8193], progress[128]; char abort_msg[] = "aborting due to possible repository " "corruption on the remote side."; int buffered = -1; ssize_t sz; int i; FILE *pipe_fd; if (!pack_objects_hook) pack_objects.git_cmd = 1; else { argv_array_push(&pack_objects.args, pack_objects_hook); argv_array_push(&pack_objects.args, "git"); pack_objects.use_shell = 1; } if (shallow_nr) { argv_array_push(&pack_objects.args, "--shallow-file"); argv_array_push(&pack_objects.args, ""); } argv_array_push(&pack_objects.args, "pack-objects"); argv_array_push(&pack_objects.args, "--revs"); if (use_thin_pack) argv_array_push(&pack_objects.args, "--thin"); argv_array_push(&pack_objects.args, "--stdout"); if (shallow_nr) argv_array_push(&pack_objects.args, "--shallow"); if (!no_progress) argv_array_push(&pack_objects.args, "--progress"); if (use_ofs_delta) argv_array_push(&pack_objects.args, "--delta-base-offset"); if (use_include_tag) argv_array_push(&pack_objects.args, "--include-tag"); pack_objects.in = -1; pack_objects.out = -1; pack_objects.err = -1; if (start_command(&pack_objects)) die("git upload-pack: unable to fork git-pack-objects"); pipe_fd = xfdopen(pack_objects.in, "w"); if (shallow_nr) for_each_commit_graft(write_one_shallow, pipe_fd); for (i = 0; i < want_obj.nr; i++) fprintf(pipe_fd, "%s\n", oid_to_hex(&want_obj.objects[i].item->oid)); fprintf(pipe_fd, "--not\n"); for (i = 0; i < have_obj.nr; i++) fprintf(pipe_fd, "%s\n", oid_to_hex(&have_obj.objects[i].item->oid)); for (i = 0; i < extra_edge_obj.nr; i++) fprintf(pipe_fd, "%s\n", oid_to_hex(&extra_edge_obj.objects[i].item->oid)); fprintf(pipe_fd, "\n"); fflush(pipe_fd); fclose(pipe_fd); /* We read from pack_objects.err to capture stderr output for * progress bar, and pack_objects.out to capture the pack data. */ while (1) { struct pollfd pfd[2]; int pe, pu, pollsize; int ret; reset_timeout(); pollsize = 0; pe = pu = -1; if (0 <= pack_objects.out) { pfd[pollsize].fd = pack_objects.out; pfd[pollsize].events = POLLIN; pu = pollsize; pollsize++; } if (0 <= pack_objects.err) { pfd[pollsize].fd = pack_objects.err; pfd[pollsize].events = POLLIN; pe = pollsize; pollsize++; } if (!pollsize) break; ret = poll(pfd, pollsize, keepalive < 0 ? -1 : 1000 * keepalive); if (ret < 0) { if (errno != EINTR) { error_errno("poll failed, resuming"); sleep(1); } continue; } if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) { /* Status ready; we ship that in the side-band * or dump to the standard error. */ sz = xread(pack_objects.err, progress, sizeof(progress)); if (0 < sz) send_client_data(2, progress, sz); else if (sz == 0) { close(pack_objects.err); pack_objects.err = -1; } else goto fail; /* give priority to status messages */ continue; } if (0 <= pu && (pfd[pu].revents & (POLLIN|POLLHUP))) { /* Data ready; we keep the last byte to ourselves * in case we detect broken rev-list, so that we * can leave the stream corrupted. This is * unfortunate -- unpack-objects would happily * accept a valid packdata with trailing garbage, * so appending garbage after we pass all the * pack data is not good enough to signal * breakage to downstream. */ char *cp = data; ssize_t outsz = 0; if (0 <= buffered) { *cp++ = buffered; outsz++; } sz = xread(pack_objects.out, cp, sizeof(data) - outsz); if (0 < sz) ; else if (sz == 0) { close(pack_objects.out); pack_objects.out = -1; } else goto fail; sz += outsz; if (1 < sz) { buffered = data[sz-1] & 0xFF; sz--; } else buffered = -1; send_client_data(1, data, sz); } /* * We hit the keepalive timeout without saying anything; send * an empty message on the data sideband just to let the other * side know we're still working on it, but don't have any data * yet. * * If we don't have a sideband channel, there's no room in the * protocol to say anything, so those clients are just out of * luck. */ if (!ret && use_sideband) { static const char buf[] = "0005\1"; write_or_die(1, buf, 5); } } if (finish_command(&pack_objects)) { error("git upload-pack: git-pack-objects died with error."); goto fail; } /* flush the data */ if (0 <= buffered) { data[0] = buffered; send_client_data(1, data, 1); fprintf(stderr, "flushed.\n"); } if (use_sideband) packet_flush(1); return; fail: send_client_data(3, abort_msg, sizeof(abort_msg)); die("git upload-pack: %s", abort_msg); } static int got_sha1(const char *hex, unsigned char *sha1) { struct object *o; int we_knew_they_have = 0; if (get_sha1_hex(hex, sha1)) die("git upload-pack: expected SHA1 object, got '%s'", hex); if (!has_sha1_file(sha1)) return -1; o = parse_object(sha1); if (!o) die("oops (%s)", sha1_to_hex(sha1)); if (o->type == OBJ_COMMIT) { struct commit_list *parents; struct commit *commit = (struct commit *)o; if (o->flags & THEY_HAVE) we_knew_they_have = 1; else o->flags |= THEY_HAVE; if (!oldest_have || (commit->date < oldest_have)) oldest_have = commit->date; for (parents = commit->parents; parents; parents = parents->next) parents->item->object.flags |= THEY_HAVE; } if (!we_knew_they_have) { add_object_array(o, NULL, &have_obj); return 1; } return 0; } static int reachable(struct commit *want) { struct prio_queue work = { compare_commits_by_commit_date }; prio_queue_put(&work, want); while (work.nr) { struct commit_list *list; struct commit *commit = prio_queue_get(&work); if (commit->object.flags & THEY_HAVE) { want->object.flags |= COMMON_KNOWN; break; } if (!commit->object.parsed) parse_object(commit->object.oid.hash); if (commit->object.flags & REACHABLE) continue; commit->object.flags |= REACHABLE; if (commit->date < oldest_have) continue; for (list = commit->parents; list; list = list->next) { struct commit *parent = list->item; if (!(parent->object.flags & REACHABLE)) prio_queue_put(&work, parent); } } want->object.flags |= REACHABLE; clear_commit_marks(want, REACHABLE); clear_prio_queue(&work); return (want->object.flags & COMMON_KNOWN); } static int ok_to_give_up(void) { int i; if (!have_obj.nr) return 0; for (i = 0; i < want_obj.nr; i++) { struct object *want = want_obj.objects[i].item; if (want->flags & COMMON_KNOWN) continue; want = deref_tag(want, "a want line", 0); if (!want || want->type != OBJ_COMMIT) { /* no way to tell if this is reachable by * looking at the ancestry chain alone, so * leave a note to ourselves not to worry about * this object anymore. */ want_obj.objects[i].item->flags |= COMMON_KNOWN; continue; } if (!reachable((struct commit *)want)) return 0; } return 1; } static int get_common_commits(void) { unsigned char sha1[20]; char last_hex[41]; int got_common = 0; int got_other = 0; int sent_ready = 0; save_commit_buffer = 0; for (;;) { char *line = packet_read_line(0, NULL); const char *arg; reset_timeout(); if (!line) { if (multi_ack == 2 && got_common && !got_other && ok_to_give_up()) { sent_ready = 1; packet_write_fmt(1, "ACK %s ready\n", last_hex); } if (have_obj.nr == 0 || multi_ack) packet_write_fmt(1, "NAK\n"); if (no_done && sent_ready) { packet_write_fmt(1, "ACK %s\n", last_hex); return 0; } if (stateless_rpc) exit(0); got_common = 0; got_other = 0; continue; } if (skip_prefix(line, "have ", &arg)) { switch (got_sha1(arg, sha1)) { case -1: /* they have what we do not */ got_other = 1; if (multi_ack && ok_to_give_up()) { const char *hex = sha1_to_hex(sha1); if (multi_ack == 2) { sent_ready = 1; packet_write_fmt(1, "ACK %s ready\n", hex); } else packet_write_fmt(1, "ACK %s continue\n", hex); } break; default: got_common = 1; memcpy(last_hex, sha1_to_hex(sha1), 41); if (multi_ack == 2) packet_write_fmt(1, "ACK %s common\n", last_hex); else if (multi_ack) packet_write_fmt(1, "ACK %s continue\n", last_hex); else if (have_obj.nr == 1) packet_write_fmt(1, "ACK %s\n", last_hex); break; } continue; } if (!strcmp(line, "done")) { if (have_obj.nr > 0) { if (multi_ack) packet_write_fmt(1, "ACK %s\n", last_hex); return 0; } packet_write_fmt(1, "NAK\n"); return -1; } die("git upload-pack: expected SHA1 list, got '%s'", line); } } static int is_our_ref(struct object *o) { int allow_hidden_ref = (allow_unadvertised_object_request & (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1)); return o->flags & ((allow_hidden_ref ? HIDDEN_REF : 0) | OUR_REF); } /* * on successful case, it's up to the caller to close cmd->out */ static int do_reachable_revlist(struct child_process *cmd, struct object_array *src, struct object_array *reachable) { static const char *argv[] = { "rev-list", "--stdin", NULL, }; struct object *o; char namebuf[42]; /* ^ + SHA-1 + LF */ int i; cmd->argv = argv; cmd->git_cmd = 1; cmd->no_stderr = 1; cmd->in = -1; cmd->out = -1; /* * If the next rev-list --stdin encounters an unknown commit, * it terminates, which will cause SIGPIPE in the write loop * below. */ sigchain_push(SIGPIPE, SIG_IGN); if (start_command(cmd)) goto error; namebuf[0] = '^'; namebuf[41] = '\n'; for (i = get_max_object_index(); 0 < i; ) { o = get_indexed_object(--i); if (!o) continue; if (reachable && o->type == OBJ_COMMIT) o->flags &= ~TMP_MARK; if (!is_our_ref(o)) continue; memcpy(namebuf + 1, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ); if (write_in_full(cmd->in, namebuf, 42) < 0) goto error; } namebuf[40] = '\n'; for (i = 0; i < src->nr; i++) { o = src->objects[i].item; if (is_our_ref(o)) { if (reachable) add_object_array(o, NULL, reachable); continue; } if (reachable && o->type == OBJ_COMMIT) o->flags |= TMP_MARK; memcpy(namebuf, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ); if (write_in_full(cmd->in, namebuf, 41) < 0) goto error; } close(cmd->in); cmd->in = -1; sigchain_pop(SIGPIPE); return 0; error: sigchain_pop(SIGPIPE); if (cmd->in >= 0) close(cmd->in); if (cmd->out >= 0) close(cmd->out); return -1; } static int get_reachable_list(struct object_array *src, struct object_array *reachable) { struct child_process cmd = CHILD_PROCESS_INIT; int i; struct object *o; char namebuf[42]; /* ^ + SHA-1 + LF */ if (do_reachable_revlist(&cmd, src, reachable) < 0) return -1; while ((i = read_in_full(cmd.out, namebuf, 41)) == 41) { struct object_id sha1; if (namebuf[40] != '\n' || get_oid_hex(namebuf, &sha1)) break; o = lookup_object(sha1.hash); if (o && o->type == OBJ_COMMIT) { o->flags &= ~TMP_MARK; } } for (i = get_max_object_index(); 0 < i; i--) { o = get_indexed_object(i - 1); if (o && o->type == OBJ_COMMIT && (o->flags & TMP_MARK)) { add_object_array(o, NULL, reachable); o->flags &= ~TMP_MARK; } } close(cmd.out); if (finish_command(&cmd)) return -1; return 0; } static int has_unreachable(struct object_array *src) { struct child_process cmd = CHILD_PROCESS_INIT; char buf[1]; int i; if (do_reachable_revlist(&cmd, src, NULL) < 0) return 1; /* * The commits out of the rev-list are not ancestors of * our ref. */ i = read_in_full(cmd.out, buf, 1); if (i) goto error; close(cmd.out); cmd.out = -1; /* * rev-list may have died by encountering a bad commit * in the history, in which case we do want to bail out * even when it showed no commit. */ if (finish_command(&cmd)) goto error; /* All the non-tip ones are ancestors of what we advertised */ return 0; error: sigchain_pop(SIGPIPE); if (cmd.out >= 0) close(cmd.out); return 1; } static void check_non_tip(void) { int i; /* * In the normal in-process case without * uploadpack.allowReachableSHA1InWant, * non-tip requests can never happen. */ if (!stateless_rpc && !(allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1)) goto error; if (!has_unreachable(&want_obj)) /* All the non-tip ones are ancestors of what we advertised */ return; error: /* Pick one of them (we know there at least is one) */ for (i = 0; i < want_obj.nr; i++) { struct object *o = want_obj.objects[i].item; if (!is_our_ref(o)) die("git upload-pack: not our ref %s", oid_to_hex(&o->oid)); } } static void send_shallow(struct commit_list *result) { while (result) { struct object *object = &result->item->object; if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) { packet_write_fmt(1, "shallow %s", oid_to_hex(&object->oid)); register_shallow(object->oid.hash); shallow_nr++; } result = result->next; } } static void send_unshallow(const struct object_array *shallows) { int i; for (i = 0; i < shallows->nr; i++) { struct object *object = shallows->objects[i].item; if (object->flags & NOT_SHALLOW) { struct commit_list *parents; packet_write_fmt(1, "unshallow %s", oid_to_hex(&object->oid)); object->flags &= ~CLIENT_SHALLOW; /* * We want to _register_ "object" as shallow, but we * also need to traverse object's parents to deepen a * shallow clone. Unregister it for now so we can * parse and add the parents to the want list, then * re-register it. */ unregister_shallow(object->oid.hash); object->parsed = 0; parse_commit_or_die((struct commit *)object); parents = ((struct commit *)object)->parents; while (parents) { add_object_array(&parents->item->object, NULL, &want_obj); parents = parents->next; } add_object_array(object, NULL, &extra_edge_obj); } /* make sure commit traversal conforms to client */ register_shallow(object->oid.hash); } } static void deepen(int depth, int deepen_relative, struct object_array *shallows) { if (depth == INFINITE_DEPTH && !is_repository_shallow()) { int i; for (i = 0; i < shallows->nr; i++) { struct object *object = shallows->objects[i].item; object->flags |= NOT_SHALLOW; } } else if (deepen_relative) { struct object_array reachable_shallows = OBJECT_ARRAY_INIT; struct commit_list *result; get_reachable_list(shallows, &reachable_shallows); result = get_shallow_commits(&reachable_shallows, depth + 1, SHALLOW, NOT_SHALLOW); send_shallow(result); free_commit_list(result); object_array_clear(&reachable_shallows); } else { struct commit_list *result; result = get_shallow_commits(&want_obj, depth, SHALLOW, NOT_SHALLOW); send_shallow(result); free_commit_list(result); } send_unshallow(shallows); packet_flush(1); } static void deepen_by_rev_list(int ac, const char **av, struct object_array *shallows) { struct commit_list *result; result = get_shallow_commits_by_rev_list(ac, av, SHALLOW, NOT_SHALLOW); send_shallow(result); free_commit_list(result); send_unshallow(shallows); packet_flush(1); } static void receive_needs(void) { struct object_array shallows = OBJECT_ARRAY_INIT; struct string_list deepen_not = STRING_LIST_INIT_DUP; int depth = 0; int has_non_tip = 0; unsigned long deepen_since = 0; int deepen_rev_list = 0; shallow_nr = 0; for (;;) { struct object *o; const char *features; unsigned char sha1_buf[20]; char *line = packet_read_line(0, NULL); const char *arg; reset_timeout(); if (!line) break; if (skip_prefix(line, "shallow ", &arg)) { unsigned char sha1[20]; struct object *object; if (get_sha1_hex(arg, sha1)) die("invalid shallow line: %s", line); object = parse_object(sha1); if (!object) continue; if (object->type != OBJ_COMMIT) die("invalid shallow object %s", sha1_to_hex(sha1)); if (!(object->flags & CLIENT_SHALLOW)) { object->flags |= CLIENT_SHALLOW; add_object_array(object, NULL, &shallows); } continue; } if (skip_prefix(line, "deepen ", &arg)) { char *end = NULL; depth = strtol(arg, &end, 0); if (!end || *end || depth <= 0) die("Invalid deepen: %s", line); continue; } if (skip_prefix(line, "deepen-since ", &arg)) { char *end = NULL; deepen_since = strtoul(arg, &end, 0); if (!end || *end || !deepen_since || /* revisions.c's max_age -1 is special */ deepen_since == -1) die("Invalid deepen-since: %s", line); deepen_rev_list = 1; continue; } if (skip_prefix(line, "deepen-not ", &arg)) { char *ref = NULL; unsigned char sha1[20]; if (expand_ref(arg, strlen(arg), sha1, &ref) != 1) die("git upload-pack: ambiguous deepen-not: %s", line); string_list_append(&deepen_not, ref); free(ref); deepen_rev_list = 1; continue; } if (!skip_prefix(line, "want ", &arg) || get_sha1_hex(arg, sha1_buf)) die("git upload-pack: protocol error, " "expected to get sha, not '%s'", line); features = arg + 40; if (parse_feature_request(features, "deepen-relative")) deepen_relative = 1; if (parse_feature_request(features, "multi_ack_detailed")) multi_ack = 2; else if (parse_feature_request(features, "multi_ack")) multi_ack = 1; if (parse_feature_request(features, "no-done")) no_done = 1; if (parse_feature_request(features, "thin-pack")) use_thin_pack = 1; if (parse_feature_request(features, "ofs-delta")) use_ofs_delta = 1; if (parse_feature_request(features, "side-band-64k")) use_sideband = LARGE_PACKET_MAX; else if (parse_feature_request(features, "side-band")) use_sideband = DEFAULT_PACKET_MAX; if (parse_feature_request(features, "no-progress")) no_progress = 1; if (parse_feature_request(features, "include-tag")) use_include_tag = 1; o = parse_object(sha1_buf); if (!o) { packet_write_fmt(1, "ERR upload-pack: not our ref %s", sha1_to_hex(sha1_buf)); die("git upload-pack: not our ref %s", sha1_to_hex(sha1_buf)); } if (!(o->flags & WANTED)) { o->flags |= WANTED; if (!((allow_unadvertised_object_request & ALLOW_ANY_SHA1) == ALLOW_ANY_SHA1 || is_our_ref(o))) has_non_tip = 1; add_object_array(o, NULL, &want_obj); } } /* * We have sent all our refs already, and the other end * should have chosen out of them. When we are operating * in the stateless RPC mode, however, their choice may * have been based on the set of older refs advertised * by another process that handled the initial request. */ if (has_non_tip) check_non_tip(); if (!use_sideband && daemon_mode) no_progress = 1; if (depth == 0 && !deepen_rev_list && shallows.nr == 0) return; if (depth > 0 && deepen_rev_list) die("git upload-pack: deepen and deepen-since (or deepen-not) cannot be used together"); if (depth > 0) deepen(depth, deepen_relative, &shallows); else if (deepen_rev_list) { struct argv_array av = ARGV_ARRAY_INIT; int i; argv_array_push(&av, "rev-list"); if (deepen_since) argv_array_pushf(&av, "--max-age=%lu", deepen_since); if (deepen_not.nr) { argv_array_push(&av, "--not"); for (i = 0; i < deepen_not.nr; i++) { struct string_list_item *s = deepen_not.items + i; argv_array_push(&av, s->string); } argv_array_push(&av, "--not"); } for (i = 0; i < want_obj.nr; i++) { struct object *o = want_obj.objects[i].item; argv_array_push(&av, oid_to_hex(&o->oid)); } deepen_by_rev_list(av.argc, av.argv, &shallows); argv_array_clear(&av); } else if (shallows.nr > 0) { int i; for (i = 0; i < shallows.nr; i++) register_shallow(shallows.objects[i].item->oid.hash); } shallow_nr += shallows.nr; free(shallows.objects); } /* return non-zero if the ref is hidden, otherwise 0 */ static int mark_our_ref(const char *refname, const char *refname_full, const struct object_id *oid) { struct object *o = lookup_unknown_object(oid->hash); if (ref_is_hidden(refname, refname_full)) { o->flags |= HIDDEN_REF; return 1; } o->flags |= OUR_REF; return 0; } static int check_ref(const char *refname_full, const struct object_id *oid, int flag, void *cb_data) { const char *refname = strip_namespace(refname_full); mark_our_ref(refname, refname_full, oid); return 0; } static void format_symref_info(struct strbuf *buf, struct string_list *symref) { struct string_list_item *item; if (!symref->nr) return; for_each_string_list_item(item, symref) strbuf_addf(buf, " symref=%s:%s", item->string, (char *)item->util); } static int send_ref(const char *refname, const struct object_id *oid, int flag, void *cb_data) { static const char *capabilities = "multi_ack thin-pack side-band" " side-band-64k ofs-delta shallow deepen-since deepen-not" " deepen-relative no-progress include-tag multi_ack_detailed"; const char *refname_nons = strip_namespace(refname); struct object_id peeled; if (mark_our_ref(refname_nons, refname, oid)) return 0; if (capabilities) { struct strbuf symref_info = STRBUF_INIT; format_symref_info(&symref_info, cb_data); packet_write_fmt(1, "%s %s%c%s%s%s%s%s agent=%s\n", oid_to_hex(oid), refname_nons, 0, capabilities, (allow_unadvertised_object_request & ALLOW_TIP_SHA1) ? " allow-tip-sha1-in-want" : "", (allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1) ? " allow-reachable-sha1-in-want" : "", stateless_rpc ? " no-done" : "", symref_info.buf, git_user_agent_sanitized()); strbuf_release(&symref_info); } else { packet_write_fmt(1, "%s %s\n", oid_to_hex(oid), refname_nons); } capabilities = NULL; if (!peel_ref(refname, peeled.hash)) packet_write_fmt(1, "%s %s^{}\n", oid_to_hex(&peeled), refname_nons); return 0; } static int find_symref(const char *refname, const struct object_id *oid, int flag, void *cb_data) { const char *symref_target; struct string_list_item *item; struct object_id unused; if ((flag & REF_ISSYMREF) == 0) return 0; symref_target = resolve_ref_unsafe(refname, 0, unused.hash, &flag); if (!symref_target || (flag & REF_ISSYMREF) == 0) die("'%s' is a symref but it is not?", refname); item = string_list_append(cb_data, refname); item->util = xstrdup(symref_target); return 0; } static void upload_pack(void) { struct string_list symref = STRING_LIST_INIT_DUP; head_ref_namespaced(find_symref, &symref); if (advertise_refs || !stateless_rpc) { reset_timeout(); head_ref_namespaced(send_ref, &symref); for_each_namespaced_ref(send_ref, &symref); advertise_shallow_grafts(1); packet_flush(1); } else { head_ref_namespaced(check_ref, NULL); for_each_namespaced_ref(check_ref, NULL); } string_list_clear(&symref, 1); if (advertise_refs) return; receive_needs(); if (want_obj.nr) { get_common_commits(); create_pack_file(); } } static int upload_pack_config(const char *var, const char *value, void *unused) { if (!strcmp("uploadpack.allowtipsha1inwant", var)) { if (git_config_bool(var, value)) allow_unadvertised_object_request |= ALLOW_TIP_SHA1; else allow_unadvertised_object_request &= ~ALLOW_TIP_SHA1; } else if (!strcmp("uploadpack.allowreachablesha1inwant", var)) { if (git_config_bool(var, value)) allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1; else allow_unadvertised_object_request &= ~ALLOW_REACHABLE_SHA1; } else if (!strcmp("uploadpack.allowanysha1inwant", var)) { if (git_config_bool(var, value)) allow_unadvertised_object_request |= ALLOW_ANY_SHA1; else allow_unadvertised_object_request &= ~ALLOW_ANY_SHA1; } else if (!strcmp("uploadpack.keepalive", var)) { keepalive = git_config_int(var, value); if (!keepalive) keepalive = -1; } else if (current_config_scope() != CONFIG_SCOPE_REPO) { if (!strcmp("uploadpack.packobjectshook", var)) return git_config_string(&pack_objects_hook, var, value); } return parse_hide_refs_config(var, value, "uploadpack"); } int cmd_main(int argc, const char **argv) { const char *dir; int strict = 0; struct option options[] = { OPT_BOOL(0, "stateless-rpc", &stateless_rpc, N_("quit after a single request/response exchange")), OPT_BOOL(0, "advertise-refs", &advertise_refs, N_("exit immediately after initial ref advertisement")), OPT_BOOL(0, "strict", &strict, N_("do not try <directory>/.git/ if <directory> is no Git directory")), OPT_INTEGER(0, "timeout", &timeout, N_("interrupt transfer after <n> seconds of inactivity")), OPT_END() }; packet_trace_identity("upload-pack"); check_replace_refs = 0; argc = parse_options(argc, argv, NULL, options, upload_pack_usage, 0); if (argc != 1) usage_with_options(upload_pack_usage, options); if (timeout) daemon_mode = 1; setup_path(); dir = argv[0]; if (!enter_repo(dir, strict)) die("'%s' does not appear to be a git repository", dir); git_config(upload_pack_config, NULL); upload_pack(); return 0; }