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 receive_needs(void) { struct object_array shallows = OBJECT_ARRAY_INIT; int depth = 0; int has_non_tip = 0; shallow_nr = 0; for (;;) { struct object *o; const char *features; unsigned char sha1_buf[20]; char *line = packet_read_line(0, NULL); reset_timeout(); if (!line) break; if (starts_with(line, "shallow ")) { unsigned char sha1[20]; struct object *object; if (get_sha1_hex(line + 8, 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 (starts_with(line, "deepen ")) { char *end; depth = strtol(line + 7, &end, 0); if (end == line + 7 || depth <= 0) die("Invalid deepen: %s", line); continue; } if (!starts_with(line, "want ") || get_sha1_hex(line+5, sha1_buf)) die("git upload-pack: protocol error, " "expected to get sha, not '%s'", line); features = line + 45; 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) die("git upload-pack: not our ref %s", sha1_to_hex(sha1_buf)); if (!(o->flags & WANTED)) { o->flags |= WANTED; if (!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 && shallows.nr == 0) return; if (depth > 0) { struct commit_list *result = NULL, *backup = NULL; int i; if (depth == INFINITE_DEPTH && !is_repository_shallow()) for (i = 0; i < shallows.nr; i++) { struct object *object = shallows.objects[i].item; object->flags |= NOT_SHALLOW; } else backup = result = get_shallow_commits(&want_obj, depth, SHALLOW, NOT_SHALLOW); while (result) { struct object *object = &result->item->object; if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) { packet_write(1, "shallow %s", sha1_to_hex(object->sha1)); register_shallow(object->sha1); shallow_nr++; } result = result->next; } free_commit_list(backup); 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(1, "unshallow %s", sha1_to_hex(object->sha1)); object->flags &= ~CLIENT_SHALLOW; /* make sure the real parents are parsed */ unregister_shallow(object->sha1); 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->sha1); } packet_flush(1); } else if (shallows.nr > 0) { int i; for (i = 0; i < shallows.nr; i++) register_shallow(shallows.objects[i].item->sha1); } shallow_nr += shallows.nr; free(shallows.objects); }
static void check_non_tip(void) { static const char *argv[] = { "rev-list", "--stdin", NULL, }; static struct child_process cmd = CHILD_PROCESS_INIT; struct object *o; char namebuf[42]; /* ^ + SHA-1 + LF */ int i; /* In the normal in-process case non-tip request can never happen */ if (!stateless_rpc) goto error; cmd.argv = argv; cmd.git_cmd = 1; cmd.no_stderr = 1; cmd.in = -1; cmd.out = -1; if (start_command(&cmd)) goto error; /* * If rev-list --stdin encounters an unknown commit, it * terminates, which will cause SIGPIPE in the write loop * below. */ sigchain_push(SIGPIPE, SIG_IGN); namebuf[0] = '^'; namebuf[41] = '\n'; for (i = get_max_object_index(); 0 < i; ) { o = get_indexed_object(--i); if (!o) continue; if (!is_our_ref(o)) continue; memcpy(namebuf + 1, sha1_to_hex(o->sha1), 40); if (write_in_full(cmd.in, namebuf, 42) < 0) goto error; } namebuf[40] = '\n'; for (i = 0; i < want_obj.nr; i++) { o = want_obj.objects[i].item; if (is_our_ref(o)) continue; memcpy(namebuf, sha1_to_hex(o->sha1), 40); if (write_in_full(cmd.in, namebuf, 41) < 0) goto error; } close(cmd.in); sigchain_pop(SIGPIPE); /* * The commits out of the rev-list are not ancestors of * our ref. */ i = read_in_full(cmd.out, namebuf, 1); if (i) goto error; close(cmd.out); /* * 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; error: /* Pick one of them (we know there at least is one) */ for (i = 0; i < want_obj.nr; i++) { o = want_obj.objects[i].item; if (!is_our_ref(o)) die("git upload-pack: not our ref %s", sha1_to_hex(o->sha1)); } }
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; timestamp_t deepen_since = 0; int deepen_rev_list = 0; shallow_nr = 0; for (;;) { struct object *o; const char *features; struct object_id oid_buf; char *line = packet_read_line(0, NULL); const char *arg; reset_timeout(); if (!line) break; if (process_shallow(line, &shallows)) continue; if (process_deepen(line, &depth)) continue; if (process_deepen_since(line, &deepen_since, &deepen_rev_list)) continue; if (process_deepen_not(line, &deepen_not, &deepen_rev_list)) continue; if (skip_prefix(line, "filter ", &arg)) { if (!filter_capability_requested) die("git upload-pack: filtering capability not negotiated"); parse_list_objects_filter(&filter_options, arg); continue; } if (!skip_prefix(line, "want ", &arg) || parse_oid_hex(arg, &oid_buf, &features)) die("git upload-pack: protocol error, " "expected to get object ID, not '%s'", line); 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; if (allow_filter && parse_feature_request(features, "filter")) filter_capability_requested = 1; o = parse_object(&oid_buf); if (!o) { packet_write_fmt(1, "ERR upload-pack: not our ref %s", oid_to_hex(&oid_buf)); die("git upload-pack: not our ref %s", oid_to_hex(&oid_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 (send_shallow_list(depth, deepen_rev_list, deepen_since, &deepen_not, &shallows)) packet_flush(1); object_array_clear(&shallows); }
/* * 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[GIT_MAX_HEXSZ + 2]; /* ^ + hash + 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[GIT_SHA1_HEXSZ + 1] = '\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, GIT_SHA1_HEXSZ + 2) < 0) goto error; } namebuf[GIT_SHA1_HEXSZ] = '\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, GIT_SHA1_HEXSZ + 1) < 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 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; timestamp_t deepen_since = 0; int deepen_rev_list = 0; shallow_nr = 0; for (;;) { struct object *o; const char *features; struct object_id oid_buf; char *line = packet_read_line(0, NULL); const char *arg; reset_timeout(); if (!line) break; if (skip_prefix(line, "shallow ", &arg)) { struct object_id oid; struct object *object; if (get_oid_hex(arg, &oid)) die("invalid shallow line: %s", line); object = parse_object(&oid); if (!object) continue; if (object->type != OBJ_COMMIT) die("invalid shallow object %s", oid_to_hex(&oid)); 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 = parse_timestamp(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; struct object_id oid; if (expand_ref(arg, strlen(arg), &oid, &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, "filter ", &arg)) { if (!filter_capability_requested) die("git upload-pack: filtering capability not negotiated"); parse_list_objects_filter(&filter_options, arg); continue; } if (!skip_prefix(line, "want ", &arg) || get_oid_hex(arg, &oid_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; if (allow_filter && parse_feature_request(features, "filter")) filter_capability_requested = 1; o = parse_object(&oid_buf); if (!o) { packet_write_fmt(1, "ERR upload-pack: not our ref %s", oid_to_hex(&oid_buf)); die("git upload-pack: not our ref %s", oid_to_hex(&oid_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=%"PRItime, 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); } shallow_nr += shallows.nr; object_array_clear(&shallows); }