Пример #1
0
static enum ack_type get_ack(int fd, unsigned char *result_sha1)
{
	static char line[1000];
	int len = packet_read_line(fd, line, sizeof(line));

	if (!len)
		die("git fetch-pack: expected ACK/NAK, got EOF");
	if (line[len-1] == '\n')
		line[--len] = 0;
	if (!strcmp(line, "NAK"))
		return NAK;
	if (!prefixcmp(line, "ACK ")) {
		if (!get_sha1_hex(line+4, result_sha1)) {
			if (strstr(line+45, "continue"))
				return ACK_continue;
			if (strstr(line+45, "common"))
				return ACK_common;
			if (strstr(line+45, "ready"))
				return ACK_ready;
			return ACK;
		}
	}
	die("git fetch_pack: expected ACK/NAK, got '%s'", line);
}
Пример #2
0
static enum ack_type get_ack(int fd, unsigned char *result_sha1)
{
	int len;
	char *line = packet_read_line(fd, &len);

	if (!len)
		die("git fetch-pack: expected ACK/NAK, got EOF");
	if (!strcmp(line, "NAK"))
		return NAK;
	if (!prefixcmp(line, "ACK ")) {
		if (!get_sha1_hex(line+4, result_sha1)) {
			if (len < 45)
				return ACK;
			if (strstr(line+45, "continue"))
				return ACK_continue;
			if (strstr(line+45, "common"))
				return ACK_common;
			if (strstr(line+45, "ready"))
				return ACK_ready;
			return ACK;
		}
	}
	die("git fetch_pack: expected ACK/NAK, got '%s'", line);
}
Пример #3
0
static int post_rpc(struct rpc_state *rpc)
{
	struct active_request_slot *slot;
	struct curl_slist *headers = NULL;
	int use_gzip = rpc->gzip_request;
	char *gzip_body = NULL;
	int err, large_request = 0;

	/* Try to load the entire request, if we can fit it into the
	 * allocated buffer space we can use HTTP/1.0 and avoid the
	 * chunked encoding mess.
	 */
	while (1) {
		size_t left = rpc->alloc - rpc->len;
		char *buf = rpc->buf + rpc->len;
		int n;

		if (left < LARGE_PACKET_MAX) {
			large_request = 1;
			use_gzip = 0;
			break;
		}

		n = packet_read_line(rpc->out, buf, left);
		if (!n)
			break;
		rpc->len += n;
	}

	if (large_request) {
		err = probe_rpc(rpc);
		if (err)
			return err;
	}

	slot = get_active_slot();

	curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
	curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
	curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
	curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "");

	headers = curl_slist_append(headers, rpc->hdr_content_type);
	headers = curl_slist_append(headers, rpc->hdr_accept);
	headers = curl_slist_append(headers, "Expect:");

	if (large_request) {
		/* The request body is large and the size cannot be predicted.
		 * We must use chunked encoding to send it.
		 */
		headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
		rpc->initial_buffer = 1;
		curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
		curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
#ifndef NO_CURL_IOCTL
		curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl);
		curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc);
#endif
		if (options.verbosity > 1) {
			fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
			fflush(stderr);
		}

	} else if (use_gzip && 1024 < rpc->len) {
		/* The client backend isn't giving us compressed data so
		 * we can try to deflate it ourselves, this may save on.
		 * the transfer time.
		 */
		size_t size;
		git_zstream stream;
		int ret;

		memset(&stream, 0, sizeof(stream));
		git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
		size = git_deflate_bound(&stream, rpc->len);
		gzip_body = xmalloc(size);

		stream.next_in = (unsigned char *)rpc->buf;
		stream.avail_in = rpc->len;
		stream.next_out = (unsigned char *)gzip_body;
		stream.avail_out = size;

		ret = git_deflate(&stream, Z_FINISH);
		if (ret != Z_STREAM_END)
			die("cannot deflate request; zlib deflate error %d", ret);

		ret = git_deflate_end_gently(&stream);
		if (ret != Z_OK)
			die("cannot deflate request; zlib end error %d", ret);

		size = stream.total_out;

		headers = curl_slist_append(headers, "Content-Encoding: gzip");
		curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
		curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, size);

		if (options.verbosity > 1) {
			fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
				rpc->service_name,
				(unsigned long)rpc->len, (unsigned long)size);
			fflush(stderr);
		}
	} else {
		/* We know the complete request size in advance, use the
		 * more normal Content-Length approach.
		 */
		curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
		curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, rpc->len);
		if (options.verbosity > 1) {
			fprintf(stderr, "POST %s (%lu bytes)\n",
				rpc->service_name, (unsigned long)rpc->len);
			fflush(stderr);
		}
	}

	curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
	curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
	curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);

	err = run_slot(slot);

	curl_slist_free_all(headers);
	free(gzip_body);
	return err;
}
Пример #4
0
static int execute(struct sockaddr *addr)
{
	static char line[1000];
	int pktlen, len, i;

	if (addr) {
		char addrbuf[256] = "";
		int port = -1;

		if (addr->sa_family == AF_INET) {
			struct sockaddr_in *sin_addr = (void *) addr;
			inet_ntop(addr->sa_family, &sin_addr->sin_addr, addrbuf, sizeof(addrbuf));
			port = ntohs(sin_addr->sin_port);
#ifndef NO_IPV6
		} else if (addr && addr->sa_family == AF_INET6) {
			struct sockaddr_in6 *sin6_addr = (void *) addr;

			char *buf = addrbuf;
			*buf++ = '['; *buf = '\0'; /* stpcpy() is cool */
			inet_ntop(AF_INET6, &sin6_addr->sin6_addr, buf, sizeof(addrbuf) - 1);
			strcat(buf, "]");

			port = ntohs(sin6_addr->sin6_port);
#endif
		}
		loginfo("Connection from %s:%d", addrbuf, port);
		setenv("REMOTE_ADDR", addrbuf, 1);
	}
	else {
		unsetenv("REMOTE_ADDR");
	}

	alarm(init_timeout ? init_timeout : timeout);
	pktlen = packet_read_line(0, line, sizeof(line));
	alarm(0);

	len = strlen(line);
	if (pktlen != len)
		loginfo("Extended attributes (%d bytes) exist <%.*s>",
			(int) pktlen - len,
			(int) pktlen - len, line + len + 1);
	if (len && line[len-1] == '\n') {
		line[--len] = 0;
		pktlen--;
	}

	free(hostname);
	free(canon_hostname);
	free(ip_address);
	free(tcp_port);
	hostname = canon_hostname = ip_address = tcp_port = NULL;

	if (len != pktlen)
		parse_host_arg(line + len + 1, pktlen - len - 1);

	for (i = 0; i < ARRAY_SIZE(daemon_service); i++) {
		struct daemon_service *s = &(daemon_service[i]);
		int namelen = strlen(s->name);
		if (!prefixcmp(line, "git-") &&
		    !strncmp(s->name, line + 4, namelen) &&
		    line[namelen + 4] == ' ') {
			/*
			 * Note: The directory here is probably context sensitive,
			 * and might depend on the actual service being performed.
			 */
			return run_service(line + namelen + 5, s);
		}
	}

	logerror("Protocol error: '%s'", line);
	return -1;
}
Пример #5
0
static int find_common(struct fetch_negotiator *negotiator,
		       struct fetch_pack_args *args,
		       int fd[2], struct object_id *result_oid,
		       struct ref *refs)
{
	int fetching;
	int count = 0, flushes = 0, flush_at = INITIAL_FLUSH, retval;
	const struct object_id *oid;
	unsigned in_vain = 0;
	int got_continue = 0;
	int got_ready = 0;
	struct strbuf req_buf = STRBUF_INIT;
	size_t state_len = 0;

	if (args->stateless_rpc && multi_ack == 1)
		die(_("--stateless-rpc requires multi_ack_detailed"));

	if (!args->no_dependents) {
		mark_tips(negotiator, args->negotiation_tips);
		for_each_cached_alternate(negotiator, insert_one_alternate_object);
	}

	fetching = 0;
	for ( ; refs ; refs = refs->next) {
		struct object_id *remote = &refs->old_oid;
		const char *remote_hex;
		struct object *o;

		/*
		 * If that object is complete (i.e. it is an ancestor of a
		 * local ref), we tell them we have it but do not have to
		 * tell them about its ancestors, which they already know
		 * about.
		 *
		 * We use lookup_object here because we are only
		 * interested in the case we *know* the object is
		 * reachable and we have already scanned it.
		 *
		 * Do this only if args->no_dependents is false (if it is true,
		 * we cannot trust the object flags).
		 */
		if (!args->no_dependents &&
		    ((o = lookup_object(the_repository, remote->hash)) != NULL) &&
				(o->flags & COMPLETE)) {
			continue;
		}

		remote_hex = oid_to_hex(remote);
		if (!fetching) {
			struct strbuf c = STRBUF_INIT;
			if (multi_ack == 2)     strbuf_addstr(&c, " multi_ack_detailed");
			if (multi_ack == 1)     strbuf_addstr(&c, " multi_ack");
			if (no_done)            strbuf_addstr(&c, " no-done");
			if (use_sideband == 2)  strbuf_addstr(&c, " side-band-64k");
			if (use_sideband == 1)  strbuf_addstr(&c, " side-band");
			if (args->deepen_relative) strbuf_addstr(&c, " deepen-relative");
			if (args->use_thin_pack) strbuf_addstr(&c, " thin-pack");
			if (args->no_progress)   strbuf_addstr(&c, " no-progress");
			if (args->include_tag)   strbuf_addstr(&c, " include-tag");
			if (prefer_ofs_delta)   strbuf_addstr(&c, " ofs-delta");
			if (deepen_since_ok)    strbuf_addstr(&c, " deepen-since");
			if (deepen_not_ok)      strbuf_addstr(&c, " deepen-not");
			if (agent_supported)    strbuf_addf(&c, " agent=%s",
							    git_user_agent_sanitized());
			if (args->filter_options.choice)
				strbuf_addstr(&c, " filter");
			packet_buf_write(&req_buf, "want %s%s\n", remote_hex, c.buf);
			strbuf_release(&c);
		} else
			packet_buf_write(&req_buf, "want %s\n", remote_hex);
		fetching++;
	}

	if (!fetching) {
		strbuf_release(&req_buf);
		packet_flush(fd[1]);
		return 1;
	}

	if (is_repository_shallow(the_repository))
		write_shallow_commits(&req_buf, 1, NULL);
	if (args->depth > 0)
		packet_buf_write(&req_buf, "deepen %d", args->depth);
	if (args->deepen_since) {
		timestamp_t max_age = approxidate(args->deepen_since);
		packet_buf_write(&req_buf, "deepen-since %"PRItime, max_age);
	}
	if (args->deepen_not) {
		int i;
		for (i = 0; i < args->deepen_not->nr; i++) {
			struct string_list_item *s = args->deepen_not->items + i;
			packet_buf_write(&req_buf, "deepen-not %s", s->string);
		}
	}
	if (server_supports_filtering && args->filter_options.choice)
		packet_buf_write(&req_buf, "filter %s",
				 args->filter_options.filter_spec);
	packet_buf_flush(&req_buf);
	state_len = req_buf.len;

	if (args->deepen) {
		char *line;
		const char *arg;
		struct object_id oid;

		send_request(args, fd[1], &req_buf);
		while ((line = packet_read_line(fd[0], NULL))) {
			if (skip_prefix(line, "shallow ", &arg)) {
				if (get_oid_hex(arg, &oid))
					die(_("invalid shallow line: %s"), line);
				register_shallow(the_repository, &oid);
				continue;
			}
			if (skip_prefix(line, "unshallow ", &arg)) {
				if (get_oid_hex(arg, &oid))
					die(_("invalid unshallow line: %s"), line);
				if (!lookup_object(the_repository, oid.hash))
					die(_("object not found: %s"), line);
				/* make sure that it is parsed as shallow */
				if (!parse_object(the_repository, &oid))
					die(_("error in object: %s"), line);
				if (unregister_shallow(&oid))
					die(_("no shallow found: %s"), line);
				continue;
			}
			die(_("expected shallow/unshallow, got %s"), line);
		}
	} else if (!args->stateless_rpc)
		send_request(args, fd[1], &req_buf);

	if (!args->stateless_rpc) {
		/* If we aren't using the stateless-rpc interface
		 * we don't need to retain the headers.
		 */
		strbuf_setlen(&req_buf, 0);
		state_len = 0;
	}

	flushes = 0;
	retval = -1;
	if (args->no_dependents)
		goto done;
	while ((oid = negotiator->next(negotiator))) {
		packet_buf_write(&req_buf, "have %s\n", oid_to_hex(oid));
		print_verbose(args, "have %s", oid_to_hex(oid));
		in_vain++;
		if (flush_at <= ++count) {
			int ack;

			packet_buf_flush(&req_buf);
			send_request(args, fd[1], &req_buf);
			strbuf_setlen(&req_buf, state_len);
			flushes++;
			flush_at = next_flush(args->stateless_rpc, count);

			/*
			 * We keep one window "ahead" of the other side, and
			 * will wait for an ACK only on the next one
			 */
			if (!args->stateless_rpc && count == INITIAL_FLUSH)
				continue;

			consume_shallow_list(args, fd[0]);
			do {
				ack = get_ack(fd[0], result_oid);
				if (ack)
					print_verbose(args, _("got %s %d %s"), "ack",
						      ack, oid_to_hex(result_oid));
				switch (ack) {
				case ACK:
					flushes = 0;
					multi_ack = 0;
					retval = 0;
					goto done;
				case ACK_common:
				case ACK_ready:
				case ACK_continue: {
					struct commit *commit =
						lookup_commit(the_repository,
							      result_oid);
					int was_common;

					if (!commit)
						die(_("invalid commit %s"), oid_to_hex(result_oid));
					was_common = negotiator->ack(negotiator, commit);
					if (args->stateless_rpc
					 && ack == ACK_common
					 && !was_common) {
						/* We need to replay the have for this object
						 * on the next RPC request so the peer knows
						 * it is in common with us.
						 */
						const char *hex = oid_to_hex(result_oid);
						packet_buf_write(&req_buf, "have %s\n", hex);
						state_len = req_buf.len;
						/*
						 * Reset in_vain because an ack
						 * for this commit has not been
						 * seen.
						 */
						in_vain = 0;
					} else if (!args->stateless_rpc
						   || ack != ACK_common)
						in_vain = 0;
					retval = 0;
					got_continue = 1;
					if (ack == ACK_ready)
						got_ready = 1;
					break;
					}
				}
			} while (ack);
			flushes--;
			if (got_continue && MAX_IN_VAIN < in_vain) {
				print_verbose(args, _("giving up"));
				break; /* give up */
			}
			if (got_ready)
				break;
		}
	}
done:
	if (!got_ready || !no_done) {
		packet_buf_write(&req_buf, "done\n");
		send_request(args, fd[1], &req_buf);
	}
	print_verbose(args, _("done"));
	if (retval != 0) {
		multi_ack = 0;
		flushes++;
	}
	strbuf_release(&req_buf);

	if (!got_ready || !no_done)
		consume_shallow_list(args, fd[0]);
	while (flushes || multi_ack) {
		int ack = get_ack(fd[0], result_oid);
		if (ack) {
			print_verbose(args, _("got %s (%d) %s"), "ack",
				      ack, oid_to_hex(result_oid));
			if (ack == ACK)
				return 0;
			multi_ack = 1;
			continue;
		}
		flushes--;
	}
	/* it is no error to fetch into a completely empty repo */
	return count ? retval : 0;
}
Пример #6
0
static struct command *read_head_info(struct sha1_array *shallow)
{
	struct command *commands = NULL;
	struct command **p = &commands;
	for (;;) {
		char *line;
		int len, linelen;

		line = packet_read_line(0, &len);
		if (!line)
			break;

		if (len == 48 && starts_with(line, "shallow ")) {
			unsigned char sha1[20];
			if (get_sha1_hex(line + 8, sha1))
				die("protocol error: expected shallow sha, got '%s'",
				    line + 8);
			sha1_array_append(shallow, sha1);
			continue;
		}

		linelen = strlen(line);
		if (linelen < len) {
			const char *feature_list = line + linelen + 1;
			if (parse_feature_request(feature_list, "report-status"))
				report_status = 1;
			if (parse_feature_request(feature_list, "side-band-64k"))
				use_sideband = LARGE_PACKET_MAX;
			if (parse_feature_request(feature_list, "quiet"))
				quiet = 1;
			if (advertise_atomic_push
			    && parse_feature_request(feature_list, "atomic"))
				use_atomic = 1;
			if (advertise_push_options
			    && parse_feature_request(feature_list, "push-options"))
				use_push_options = 1;
		}

		if (!strcmp(line, "push-cert")) {
			int true_flush = 0;
			char certbuf[1024];

			for (;;) {
				len = packet_read(0, NULL, NULL,
						  certbuf, sizeof(certbuf), 0);
				if (!len) {
					true_flush = 1;
					break;
				}
				if (!strcmp(certbuf, "push-cert-end\n"))
					break; /* end of cert */
				strbuf_addstr(&push_cert, certbuf);
			}

			if (true_flush)
				break;
			continue;
		}

		p = queue_command(p, line, linelen);
	}

	if (push_cert.len)
		queue_commands_from_cert(p, &push_cert);

	return commands;
}
Пример #7
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;
}
Пример #8
0
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);
		reset_timeout();

		if (!line) {
			if (multi_ack == 2 && got_common
			    && !got_other && ok_to_give_up()) {
				sent_ready = 1;
				packet_write(1, "ACK %s ready\n", last_hex);
			}
			if (have_obj.nr == 0 || multi_ack)
				packet_write(1, "NAK\n");

			if (no_done && sent_ready) {
				packet_write(1, "ACK %s\n", last_hex);
				return 0;
			}
			if (stateless_rpc)
				exit(0);
			got_common = 0;
			got_other = 0;
			continue;
		}
		if (starts_with(line, "have ")) {
			switch (got_sha1(line+5, 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(1, "ACK %s ready\n", hex);
					} else
						packet_write(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(1, "ACK %s common\n", last_hex);
				else if (multi_ack)
					packet_write(1, "ACK %s continue\n", last_hex);
				else if (have_obj.nr == 1)
					packet_write(1, "ACK %s\n", last_hex);
				break;
			}
			continue;
		}
		if (!strcmp(line, "done")) {
			if (have_obj.nr > 0) {
				if (multi_ack)
					packet_write(1, "ACK %s\n", last_hex);
				return 0;
			}
			packet_write(1, "NAK\n");
			return -1;
		}
		die("git upload-pack: expected SHA1 list, got '%s'", line);
	}
}
Пример #9
0
int recv_sideband(const char *me, int in_stream, int out, int err)
{
	unsigned pf = strlen(PREFIX);
	unsigned sf;
	char buf[LARGE_PACKET_MAX + 2*FIX_SIZE];
	char *suffix, *term;

	memcpy(buf, PREFIX, pf);
	term = getenv("TERM");
	if (term && strcmp(term, "dumb"))
		suffix = ANSI_SUFFIX;
	else
		suffix = DUMB_SUFFIX;
	sf = strlen(suffix);

	while (1) {
		int band, len;
		len = packet_read_line(in_stream, buf + pf, LARGE_PACKET_MAX);
		if (len == 0)
			break;
		if (len < 1) {
			len = sprintf(buf, "%s: protocol error: no band designator\n", me);
			safe_write(err, buf, len);
			return SIDEBAND_PROTOCOL_ERROR;
		}
		band = buf[pf] & 0xff;
		len--;
		switch (band) {
		case 3:
			buf[pf] = ' ';
			buf[pf+1+len] = '\n';
			safe_write(err, buf, pf+1+len+1);
			return SIDEBAND_REMOTE_ERROR;
		case 2:
			buf[pf] = ' ';
			len += pf+1;
			while (1) {
				int brk = pf+1;

				/* Break the buffer into separate lines. */
				while (brk < len) {
					brk++;
					if (buf[brk-1] == '\n' ||
					    buf[brk-1] == '\r')
						break;
				}

				/*
				 * Let's insert a suffix to clear the end
				 * of the screen line, but only if current
				 * line data actually contains something.
				 */
				if (brk > pf+1 + 1) {
					char save[FIX_SIZE];
					memcpy(save, buf + brk, sf);
					buf[brk + sf - 1] = buf[brk - 1];
					memcpy(buf + brk - 1, suffix, sf);
					safe_write(err, buf, brk + sf);
					memcpy(buf + brk, save, sf);
				} else
					safe_write(err, buf, brk);

				if (brk < len) {
					memmove(buf + pf+1, buf + brk, len - brk);
					len = len - brk + pf+1;
				} else
					break;
			}
			continue;
		case 1:
			safe_write(out, buf + pf+1, len);
			continue;
		default:
			len = sprintf(buf,
				      "%s: protocol error: bad band #%d\n",
				      me, band);
			safe_write(err, buf, len);
			return SIDEBAND_PROTOCOL_ERROR;
		}
	}
	return 0;
}
Пример #10
0
int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
{
	int i, ret;
	struct ref *ref = NULL;
	const char *dest = NULL;
	struct ref **sought = NULL;
	int nr_sought = 0, alloc_sought = 0;
	int fd[2];
	char *pack_lockfile = NULL;
	char **pack_lockfile_ptr = NULL;
	struct child_process *conn;
	struct fetch_pack_args args;
	struct sha1_array shallow = SHA1_ARRAY_INIT;

	packet_trace_identity("fetch-pack");

	memset(&args, 0, sizeof(args));
	args.uploadpack = "git-upload-pack";

	for (i = 1; i < argc && *argv[i] == '-'; i++) {
		const char *arg = argv[i];

		if (starts_with(arg, "--upload-pack=")) {
			args.uploadpack = arg + 14;
			continue;
		}
		if (starts_with(arg, "--exec=")) {
			args.uploadpack = arg + 7;
			continue;
		}
		if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
			args.quiet = 1;
			continue;
		}
		if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
			args.lock_pack = args.keep_pack;
			args.keep_pack = 1;
			continue;
		}
		if (!strcmp("--thin", arg)) {
			args.use_thin_pack = 1;
			continue;
		}
		if (!strcmp("--include-tag", arg)) {
			args.include_tag = 1;
			continue;
		}
		if (!strcmp("--all", arg)) {
			args.fetch_all = 1;
			continue;
		}
		if (!strcmp("--stdin", arg)) {
			args.stdin_refs = 1;
			continue;
		}
		if (!strcmp("--diag-url", arg)) {
			args.diag_url = 1;
			continue;
		}
		if (!strcmp("-v", arg)) {
			args.verbose = 1;
			continue;
		}
		if (starts_with(arg, "--depth=")) {
			args.depth = strtol(arg + 8, NULL, 0);
			continue;
		}
		if (!strcmp("--no-progress", arg)) {
			args.no_progress = 1;
			continue;
		}
		if (!strcmp("--stateless-rpc", arg)) {
			args.stateless_rpc = 1;
			continue;
		}
		if (!strcmp("--lock-pack", arg)) {
			args.lock_pack = 1;
			pack_lockfile_ptr = &pack_lockfile;
			continue;
		}
		if (!strcmp("--check-self-contained-and-connected", arg)) {
			args.check_self_contained_and_connected = 1;
			continue;
		}
		if (!strcmp("--cloning", arg)) {
			args.cloning = 1;
			continue;
		}
		if (!strcmp("--update-shallow", arg)) {
			args.update_shallow = 1;
			continue;
		}
		usage(fetch_pack_usage);
	}

	if (i < argc)
		dest = argv[i++];
	else
		usage(fetch_pack_usage);

	/*
	 * Copy refs from cmdline to growable list, then append any
	 * refs from the standard input:
	 */
	for (; i < argc; i++)
		add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
	if (args.stdin_refs) {
		if (args.stateless_rpc) {
			/* in stateless RPC mode we use pkt-line to read
			 * from stdin, until we get a flush packet
			 */
			for (;;) {
				char *line = packet_read_line(0, NULL);
				if (!line)
					break;
				add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
			}
		}
		else {
			/* read from stdin one ref per line, until EOF */
			struct strbuf line = STRBUF_INIT;
			while (strbuf_getline(&line, stdin, '\n') != EOF)
				add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
			strbuf_release(&line);
		}
	}

	if (args.stateless_rpc) {
		conn = NULL;
		fd[0] = 0;
		fd[1] = 1;
	} else {
		int flags = args.verbose ? CONNECT_VERBOSE : 0;
		if (args.diag_url)
			flags |= CONNECT_DIAG_URL;
		conn = git_connect(fd, dest, args.uploadpack,
				   flags);
		if (!conn)
			return args.diag_url ? 0 : 1;
	}
	get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL, &shallow);

	ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
			 &shallow, pack_lockfile_ptr);
	if (pack_lockfile) {
		printf("lock %s\n", pack_lockfile);
		fflush(stdout);
	}
	if (args.check_self_contained_and_connected &&
	    args.self_contained_and_connected) {
		printf("connectivity-ok\n");
		fflush(stdout);
	}
	close(fd[0]);
	close(fd[1]);
	if (finish_connect(conn))
		return 1;

	ret = !ref;

	/*
	 * If the heads to pull were given, we should have consumed
	 * all of them by matching the remote.  Otherwise, 'git fetch
	 * remote no-such-ref' would silently succeed without issuing
	 * an error.
	 */
	for (i = 0; i < nr_sought; i++) {
		if (!sought[i] || sought[i]->matched)
			continue;
		error("no such remote ref %s", sought[i]->name);
		ret = 1;
	}

	while (ref) {
		printf("%s %s\n",
		       sha1_to_hex(ref->old_sha1), ref->name);
		ref = ref->next;
	}

	return ret;
}
Пример #11
0
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);
}
Пример #12
0
int recv_sideband(const char *me, int in_stream, int out, int err)
{
	unsigned pf = strlen(PREFIX);
	unsigned sf;
	char buf[LARGE_PACKET_MAX + 2*FIX_SIZE];
	char *suffix, *term;
	int skip_pf = 0;

	memcpy(buf, PREFIX, pf);
	term = getenv("TERM");
	if (term && strcmp(term, "dumb"))
		suffix = ANSI_SUFFIX;
	else
		suffix = DUMB_SUFFIX;
	sf = strlen(suffix);

	while (1) {
		int band, len;
		len = packet_read_line(in_stream, buf + pf, LARGE_PACKET_MAX);
		if (len == 0)
			break;
		if (len < 1) {
			len = sprintf(buf, "%s: protocol error: no band designator\n", me);
			safe_write(err, buf, len);
			return SIDEBAND_PROTOCOL_ERROR;
		}
		band = buf[pf] & 0xff;
		len--;
		switch (band) {
		case 3:
			buf[pf] = ' ';
			buf[pf+1+len] = '\n';
			safe_write(err, buf, pf+1+len+1);
			return SIDEBAND_REMOTE_ERROR;
		case 2:
			buf[pf] = ' ';
			do {
				char *b = buf;
				int brk = 0;

				/*
				 * If the last buffer didn't end with a line
				 * break then we should not print a prefix
				 * this time around.
				 */
				if (skip_pf) {
					b += pf+1;
				} else {
					len += pf+1;
					brk += pf+1;
				}

				/* Look for a line break. */
				for (;;) {
					brk++;
					if (brk > len) {
						brk = 0;
						break;
					}
					if (b[brk-1] == '\n' ||
					    b[brk-1] == '\r')
						break;
				}

				/*
				 * Let's insert a suffix to clear the end
				 * of the screen line if a line break was
				 * found.  Also, if we don't skip the
				 * prefix, then a non-empty string must be
				 * present too.
				 */
				if (brk > (skip_pf ? 0 : (pf+1 + 1))) {
					char save[FIX_SIZE];
					memcpy(save, b + brk, sf);
					b[brk + sf - 1] = b[brk - 1];
					memcpy(b + brk - 1, suffix, sf);
					safe_write(err, b, brk + sf);
					memcpy(b + brk, save, sf);
					len -= brk;
				} else {
					int l = brk ? brk : len;
					safe_write(err, b, l);
					len -= l;
				}

				skip_pf = !brk;
				memmove(buf + pf+1, b + brk, len);
			} while (len);
			continue;
		case 1:
			safe_write(out, buf + pf+1, len);
			continue;
		default:
			len = sprintf(buf,
				      "%s: protocol error: bad band #%d\n",
				      me, band);
			safe_write(err, buf, len);
			return SIDEBAND_PROTOCOL_ERROR;
		}
	}
	return 0;
}
Пример #13
0
static void receive_needs(void)
{
	struct object_array shallows = {0, 0, NULL};
	static char line[1000];
	int len, depth = 0;

	if (debug_fd)
		write_in_full(debug_fd, "#S\n", 3);
	for (;;) {
		struct object *o;
		unsigned char sha1_buf[20];
		len = packet_read_line(0, line, sizeof(line));
		reset_timeout();
		if (!len)
			break;
		if (debug_fd)
			write_in_full(debug_fd, line, len);

		if (!prefixcmp(line, "shallow ")) {
			unsigned char sha1[20];
			struct object *object;
			use_thin_pack = 0;
			if (get_sha1(line + 8, sha1))
				die("invalid shallow line: %s", line);
			object = parse_object(sha1);
			if (!object)
				die("did not find object for %s", line);
			object->flags |= CLIENT_SHALLOW;
			add_object_array(object, NULL, &shallows);
			continue;
		}
		if (!prefixcmp(line, "deepen ")) {
			char *end;
			use_thin_pack = 0;
			depth = strtol(line + 7, &end, 0);
			if (end == line + 7 || depth <= 0)
				die("Invalid deepen: %s", line);
			continue;
		}
		if (prefixcmp(line, "want ") ||
		    get_sha1_hex(line+5, sha1_buf))
			die("git upload-pack: protocol error, "
			    "expected to get sha, not '%s'", line);
		if (strstr(line+45, "multi_ack"))
			multi_ack = 1;
		if (strstr(line+45, "thin-pack"))
			use_thin_pack = 1;
		if (strstr(line+45, "ofs-delta"))
			use_ofs_delta = 1;
		if (strstr(line+45, "side-band-64k"))
			use_sideband = LARGE_PACKET_MAX;
		else if (strstr(line+45, "side-band"))
			use_sideband = DEFAULT_PACKET_MAX;
		if (strstr(line+45, "no-progress"))
			no_progress = 1;
		if (strstr(line+45, "include-tag"))
			use_include_tag = 1;

		/* We have sent all our refs already, and the other end
		 * should have chosen out of them; otherwise they are
		 * asking for nonsense.
		 *
		 * Hmph.  We may later want to allow "want" line that
		 * asks for something like "master~10" (symbolic)...
		 * would it make sense?  I don't know.
		 */
		o = lookup_object(sha1_buf);
		if (!o || !(o->flags & OUR_REF))
			die("git upload-pack: not our ref %s", line+5);
		if (!(o->flags & WANTED)) {
			o->flags |= WANTED;
			add_object_array(o, NULL, &want_obj);
		}
	}
	if (debug_fd)
		write_in_full(debug_fd, "#E\n", 3);

	if (!use_sideband && daemon_mode)
		no_progress = 1;

	if (depth == 0 && shallows.nr == 0)
		return;
	if (depth > 0) {
		struct commit_list *result, *backup;
		int i;
		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);
			}
			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;
				if (parse_commit((struct commit *)object))
					die("invalid commit");
				parents = ((struct commit *)object)->parents;
				while (parents) {
					add_object_array(&parents->item->object,
							NULL, &want_obj);
					parents = parents->next;
				}
			}
			/* 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);
		}
	free(shallows.objects);
}
Пример #14
0
static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
{
	const char *svc = rpc->service_name;
	struct strbuf buf = STRBUF_INIT;
	struct strbuf *preamble = rpc->stdin_preamble;
	struct child_process client;
	int err = 0;

	memset(&client, 0, sizeof(client));
	client.in = -1;
	client.out = -1;
	client.git_cmd = 1;
	client.argv = rpc->argv;
	if (start_command(&client))
		exit(1);
	if (preamble)
		write_or_die(client.in, preamble->buf, preamble->len);
	if (heads)
		write_or_die(client.in, heads->buf, heads->len);

	rpc->alloc = http_post_buffer;
	rpc->buf = xmalloc(rpc->alloc);
	rpc->in = client.in;
	rpc->out = client.out;
	strbuf_init(&rpc->result, 0);

	strbuf_addf(&buf, "%s%s", url, svc);
	rpc->service_url = strbuf_detach(&buf, NULL);

	strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
	rpc->hdr_content_type = strbuf_detach(&buf, NULL);

	strbuf_addf(&buf, "Accept: application/x-%s-result", svc);
	rpc->hdr_accept = strbuf_detach(&buf, NULL);

	while (!err) {
		int n = packet_read_line(rpc->out, rpc->buf, rpc->alloc);
		if (!n)
			break;
		rpc->pos = 0;
		rpc->len = n;
		err |= post_rpc(rpc);
	}

	close(client.in);
	client.in = -1;
	if (!err) {
		strbuf_read(&rpc->result, client.out, 0);
	} else {
		char buf[4096];
		for (;;)
			if (xread(client.out, buf, sizeof(buf)) <= 0)
				break;
	}

	close(client.out);
	client.out = -1;

	err |= finish_command(&client);
	free(rpc->service_url);
	free(rpc->hdr_content_type);
	free(rpc->hdr_accept);
	free(rpc->buf);
	strbuf_release(&buf);
	return err;
}
Пример #15
0
static int get_common_commits(void)
{
	struct object_id oid;
	char last_hex[GIT_MAX_HEXSZ + 1];
	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_oid(arg, &oid)) {
			case -1: /* they have what we do not */
				got_other = 1;
				if (multi_ack && ok_to_give_up()) {
					const char *hex = oid_to_hex(&oid);
					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;
				oid_to_hex_r(last_hex, &oid);
				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);
	}
}
Пример #16
0
int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
{
	int i, ret;
	struct ref *ref = NULL;
	const char *dest = NULL;
	struct ref **sought = NULL;
	int nr_sought = 0, alloc_sought = 0;
	int fd[2];
	char *pack_lockfile = NULL;
	char **pack_lockfile_ptr = NULL;
	struct child_process *conn;
	struct fetch_pack_args args;
	struct oid_array shallow = OID_ARRAY_INIT;
	struct string_list deepen_not = STRING_LIST_INIT_DUP;
	struct packet_reader reader;
	enum protocol_version version;

	fetch_if_missing = 0;

	packet_trace_identity("fetch-pack");

	memset(&args, 0, sizeof(args));
	args.uploadpack = "git-upload-pack";

	for (i = 1; i < argc && *argv[i] == '-'; i++) {
		const char *arg = argv[i];

		if (skip_prefix(arg, "--upload-pack=", &arg)) {
			args.uploadpack = arg;
			continue;
		}
		if (skip_prefix(arg, "--exec=", &arg)) {
			args.uploadpack = arg;
			continue;
		}
		if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
			args.quiet = 1;
			continue;
		}
		if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
			args.lock_pack = args.keep_pack;
			args.keep_pack = 1;
			continue;
		}
		if (!strcmp("--thin", arg)) {
			args.use_thin_pack = 1;
			continue;
		}
		if (!strcmp("--include-tag", arg)) {
			args.include_tag = 1;
			continue;
		}
		if (!strcmp("--all", arg)) {
			args.fetch_all = 1;
			continue;
		}
		if (!strcmp("--stdin", arg)) {
			args.stdin_refs = 1;
			continue;
		}
		if (!strcmp("--diag-url", arg)) {
			args.diag_url = 1;
			continue;
		}
		if (!strcmp("-v", arg)) {
			args.verbose = 1;
			continue;
		}
		if (skip_prefix(arg, "--depth=", &arg)) {
			args.depth = strtol(arg, NULL, 0);
			continue;
		}
		if (skip_prefix(arg, "--shallow-since=", &arg)) {
			args.deepen_since = xstrdup(arg);
			continue;
		}
		if (skip_prefix(arg, "--shallow-exclude=", &arg)) {
			string_list_append(&deepen_not, arg);
			continue;
		}
		if (!strcmp(arg, "--deepen-relative")) {
			args.deepen_relative = 1;
			continue;
		}
		if (!strcmp("--no-progress", arg)) {
			args.no_progress = 1;
			continue;
		}
		if (!strcmp("--stateless-rpc", arg)) {
			args.stateless_rpc = 1;
			continue;
		}
		if (!strcmp("--lock-pack", arg)) {
			args.lock_pack = 1;
			pack_lockfile_ptr = &pack_lockfile;
			continue;
		}
		if (!strcmp("--check-self-contained-and-connected", arg)) {
			args.check_self_contained_and_connected = 1;
			continue;
		}
		if (!strcmp("--cloning", arg)) {
			args.cloning = 1;
			continue;
		}
		if (!strcmp("--update-shallow", arg)) {
			args.update_shallow = 1;
			continue;
		}
		if (!strcmp("--from-promisor", arg)) {
			args.from_promisor = 1;
			continue;
		}
		if (!strcmp("--no-dependents", arg)) {
			args.no_dependents = 1;
			continue;
		}
		if (skip_prefix(arg, ("--" CL_ARG__FILTER "="), &arg)) {
			parse_list_objects_filter(&args.filter_options, arg);
			continue;
		}
		if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
			list_objects_filter_set_no_filter(&args.filter_options);
			continue;
		}
		usage(fetch_pack_usage);
	}
	if (deepen_not.nr)
		args.deepen_not = &deepen_not;

	if (i < argc)
		dest = argv[i++];
	else
		usage(fetch_pack_usage);

	/*
	 * Copy refs from cmdline to growable list, then append any
	 * refs from the standard input:
	 */
	for (; i < argc; i++)
		add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
	if (args.stdin_refs) {
		if (args.stateless_rpc) {
			/* in stateless RPC mode we use pkt-line to read
			 * from stdin, until we get a flush packet
			 */
			for (;;) {
				char *line = packet_read_line(0, NULL);
				if (!line)
					break;
				add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
			}
		}
		else {
			/* read from stdin one ref per line, until EOF */
			struct strbuf line = STRBUF_INIT;
			while (strbuf_getline_lf(&line, stdin) != EOF)
				add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
			strbuf_release(&line);
		}
	}

	if (args.stateless_rpc) {
		conn = NULL;
		fd[0] = 0;
		fd[1] = 1;
	} else {
		int flags = args.verbose ? CONNECT_VERBOSE : 0;
		if (args.diag_url)
			flags |= CONNECT_DIAG_URL;
		conn = git_connect(fd, dest, args.uploadpack,
				   flags);
		if (!conn)
			return args.diag_url ? 0 : 1;
	}

	packet_reader_init(&reader, fd[0], NULL, 0,
			   PACKET_READ_CHOMP_NEWLINE |
			   PACKET_READ_GENTLE_ON_EOF |
			   PACKET_READ_DIE_ON_ERR_PACKET);

	version = discover_version(&reader);
	switch (version) {
	case protocol_v2:
		get_remote_refs(fd[1], &reader, &ref, 0, NULL, NULL);
		break;
	case protocol_v1:
	case protocol_v0:
		get_remote_heads(&reader, &ref, 0, NULL, &shallow);
		break;
	case protocol_unknown_version:
		BUG("unknown protocol version");
	}

	ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
			 &shallow, pack_lockfile_ptr, version);
	if (pack_lockfile) {
		printf("lock %s\n", pack_lockfile);
		fflush(stdout);
	}
	if (args.check_self_contained_and_connected &&
	    args.self_contained_and_connected) {
		printf("connectivity-ok\n");
		fflush(stdout);
	}
	close(fd[0]);
	close(fd[1]);
	if (finish_connect(conn))
		return 1;

	ret = !ref;

	/*
	 * If the heads to pull were given, we should have consumed
	 * all of them by matching the remote.  Otherwise, 'git fetch
	 * remote no-such-ref' would silently succeed without issuing
	 * an error.
	 */
	ret |= report_unmatched_refs(sought, nr_sought);

	while (ref) {
		printf("%s %s\n",
		       oid_to_hex(&ref->old_oid), ref->name);
		ref = ref->next;
	}

	return ret;
}
Пример #17
0
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);
}
Пример #18
0
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);
}
Пример #19
0
static int find_common(int fd[2], unsigned char *result_sha1,
		       struct ref *refs)
{
	int fetching;
	int count = 0, flushes = 0, retval;
	const unsigned char *sha1;
	unsigned in_vain = 0;
	int got_continue = 0;

	if (marked)
		for_each_ref(clear_marks, NULL);
	marked = 1;

	for_each_ref(rev_list_insert_ref, NULL);

	fetching = 0;
	for ( ; refs ; refs = refs->next) {
		unsigned char *remote = refs->old_sha1;
		struct object *o;

		/*
		 * If that object is complete (i.e. it is an ancestor of a
		 * local ref), we tell them we have it but do not have to
		 * tell them about its ancestors, which they already know
		 * about.
		 *
		 * We use lookup_object here because we are only
		 * interested in the case we *know* the object is
		 * reachable and we have already scanned it.
		 */
		if (((o = lookup_object(remote)) != NULL) &&
				(o->flags & COMPLETE)) {
			continue;
		}

		if (!fetching)
			packet_write(fd[1], "want %s%s%s%s%s%s%s%s\n",
				     sha1_to_hex(remote),
				     (multi_ack ? " multi_ack" : ""),
				     (use_sideband == 2 ? " side-band-64k" : ""),
				     (use_sideband == 1 ? " side-band" : ""),
				     (args.use_thin_pack ? " thin-pack" : ""),
				     (args.no_progress ? " no-progress" : ""),
				     (args.include_tag ? " include-tag" : ""),
				     " ofs-delta");
		else
			packet_write(fd[1], "want %s\n", sha1_to_hex(remote));
		fetching++;
	}
	if (is_repository_shallow())
		write_shallow_commits(fd[1], 1);
	if (args.depth > 0)
		packet_write(fd[1], "deepen %d", args.depth);
	packet_flush(fd[1]);
	if (!fetching)
		return 1;

	if (args.depth > 0) {
		char line[1024];
		unsigned char sha1[20];

		while (packet_read_line(fd[0], line, sizeof(line))) {
			if (!prefixcmp(line, "shallow ")) {
				if (get_sha1_hex(line + 8, sha1))
					die("invalid shallow line: %s", line);
				register_shallow(sha1);
				continue;
			}
			if (!prefixcmp(line, "unshallow ")) {
				if (get_sha1_hex(line + 10, sha1))
					die("invalid unshallow line: %s", line);
				if (!lookup_object(sha1))
					die("object not found: %s", line);
				/* make sure that it is parsed as shallow */
				if (!parse_object(sha1))
					die("error in object: %s", line);
				if (unregister_shallow(sha1))
					die("no shallow found: %s", line);
				continue;
			}
			die("expected shallow/unshallow, got %s", line);
		}
	}

	flushes = 0;
	retval = -1;
	while ((sha1 = get_rev())) {
		packet_write(fd[1], "have %s\n", sha1_to_hex(sha1));
		if (args.verbose)
			fprintf(stderr, "have %s\n", sha1_to_hex(sha1));
		in_vain++;
		if (!(31 & ++count)) {
			int ack;

			packet_flush(fd[1]);
			flushes++;

			/*
			 * We keep one window "ahead" of the other side, and
			 * will wait for an ACK only on the next one
			 */
			if (count == 32)
				continue;

			do {
				ack = get_ack(fd[0], result_sha1);
				if (args.verbose && ack)
					fprintf(stderr, "got ack %d %s\n", ack,
							sha1_to_hex(result_sha1));
				if (ack == 1) {
					flushes = 0;
					multi_ack = 0;
					retval = 0;
					goto done;
				} else if (ack == 2) {
					struct commit *commit =
						lookup_commit(result_sha1);
					mark_common(commit, 0, 1);
					retval = 0;
					in_vain = 0;
					got_continue = 1;
				}
			} while (ack);
			flushes--;
			if (got_continue && MAX_IN_VAIN < in_vain) {
				if (args.verbose)
					fprintf(stderr, "giving up\n");
				break; /* give up */
			}
		}
	}
done:
	packet_write(fd[1], "done\n");
	if (args.verbose)
		fprintf(stderr, "done\n");
	if (retval != 0) {
		multi_ack = 0;
		flushes++;
	}
	while (flushes || multi_ack) {
		int ack = get_ack(fd[0], result_sha1);
		if (ack) {
			if (args.verbose)
				fprintf(stderr, "got ack (%d) %s\n", ack,
					sha1_to_hex(result_sha1));
			if (ack == 1)
				return 0;
			multi_ack = 1;
			continue;
		}
		flushes--;
	}
	/* it is no error to fetch into a completely empty repo */
	return count ? retval : 0;
}
Пример #20
0
static int find_common(struct fetch_pack_args *args,
		       int fd[2], unsigned char *result_sha1,
		       struct ref *refs)
{
	int fetching;
	int count = 0, flushes = 0, flush_at = INITIAL_FLUSH, retval;
	const unsigned char *sha1;
	unsigned in_vain = 0;
	int got_continue = 0;
	int got_ready = 0;
	struct strbuf req_buf = STRBUF_INIT;
	size_t state_len = 0;

	if (args->stateless_rpc && multi_ack == 1)
		die("--stateless-rpc requires multi_ack_detailed");
	if (marked)
		for_each_ref(clear_marks, NULL);
	marked = 1;

	for_each_ref(rev_list_insert_ref, NULL);
	for_each_alternate_ref(insert_one_alternate_ref, NULL);

	fetching = 0;
	for ( ; refs ; refs = refs->next) {
		unsigned char *remote = refs->old_sha1;
		const char *remote_hex;
		struct object *o;

		/*
		 * If that object is complete (i.e. it is an ancestor of a
		 * local ref), we tell them we have it but do not have to
		 * tell them about its ancestors, which they already know
		 * about.
		 *
		 * We use lookup_object here because we are only
		 * interested in the case we *know* the object is
		 * reachable and we have already scanned it.
		 */
		if (((o = lookup_object(remote)) != NULL) &&
				(o->flags & COMPLETE)) {
			continue;
		}

		remote_hex = sha1_to_hex(remote);
		if (!fetching) {
			struct strbuf c = STRBUF_INIT;
			if (multi_ack == 2)     strbuf_addstr(&c, " multi_ack_detailed");
			if (multi_ack == 1)     strbuf_addstr(&c, " multi_ack");
			if (no_done)            strbuf_addstr(&c, " no-done");
			if (use_sideband == 2)  strbuf_addstr(&c, " side-band-64k");
			if (use_sideband == 1)  strbuf_addstr(&c, " side-band");
			if (args->use_thin_pack) strbuf_addstr(&c, " thin-pack");
			if (args->no_progress)   strbuf_addstr(&c, " no-progress");
			if (args->include_tag)   strbuf_addstr(&c, " include-tag");
			if (prefer_ofs_delta)   strbuf_addstr(&c, " ofs-delta");
			if (agent_supported)    strbuf_addf(&c, " agent=%s",
							    git_user_agent_sanitized());
			packet_buf_write(&req_buf, "want %s%s\n", remote_hex, c.buf);
			strbuf_release(&c);
		} else
			packet_buf_write(&req_buf, "want %s\n", remote_hex);
		fetching++;
	}

	if (!fetching) {
		strbuf_release(&req_buf);
		packet_flush(fd[1]);
		return 1;
	}

	if (is_repository_shallow())
		write_shallow_commits(&req_buf, 1, NULL);
	if (args->depth > 0)
		packet_buf_write(&req_buf, "deepen %d", args->depth);
	packet_buf_flush(&req_buf);
	state_len = req_buf.len;

	if (args->depth > 0) {
		char *line;
		const char *arg;
		unsigned char sha1[20];

		send_request(args, fd[1], &req_buf);
		while ((line = packet_read_line(fd[0], NULL))) {
			if (skip_prefix(line, "shallow ", &arg)) {
				if (get_sha1_hex(arg, sha1))
					die("invalid shallow line: %s", line);
				register_shallow(sha1);
				continue;
			}
			if (skip_prefix(line, "unshallow ", &arg)) {
				if (get_sha1_hex(arg, sha1))
					die("invalid unshallow line: %s", line);
				if (!lookup_object(sha1))
					die("object not found: %s", line);
				/* make sure that it is parsed as shallow */
				if (!parse_object(sha1))
					die("error in object: %s", line);
				if (unregister_shallow(sha1))
					die("no shallow found: %s", line);
				continue;
			}
			die("expected shallow/unshallow, got %s", line);
		}
	} else if (!args->stateless_rpc)
		send_request(args, fd[1], &req_buf);

	if (!args->stateless_rpc) {
		/* If we aren't using the stateless-rpc interface
		 * we don't need to retain the headers.
		 */
		strbuf_setlen(&req_buf, 0);
		state_len = 0;
	}

	flushes = 0;
	retval = -1;
	while ((sha1 = get_rev())) {
		packet_buf_write(&req_buf, "have %s\n", sha1_to_hex(sha1));
		if (args->verbose)
			fprintf(stderr, "have %s\n", sha1_to_hex(sha1));
		in_vain++;
		if (flush_at <= ++count) {
			int ack;

			packet_buf_flush(&req_buf);
			send_request(args, fd[1], &req_buf);
			strbuf_setlen(&req_buf, state_len);
			flushes++;
			flush_at = next_flush(args, count);

			/*
			 * We keep one window "ahead" of the other side, and
			 * will wait for an ACK only on the next one
			 */
			if (!args->stateless_rpc && count == INITIAL_FLUSH)
				continue;

			consume_shallow_list(args, fd[0]);
			do {
				ack = get_ack(fd[0], result_sha1);
				if (args->verbose && ack)
					fprintf(stderr, "got ack %d %s\n", ack,
							sha1_to_hex(result_sha1));
				switch (ack) {
				case ACK:
					flushes = 0;
					multi_ack = 0;
					retval = 0;
					goto done;
				case ACK_common:
				case ACK_ready:
				case ACK_continue: {
					struct commit *commit =
						lookup_commit(result_sha1);
					if (!commit)
						die("invalid commit %s", sha1_to_hex(result_sha1));
					if (args->stateless_rpc
					 && ack == ACK_common
					 && !(commit->object.flags & COMMON)) {
						/* We need to replay the have for this object
						 * on the next RPC request so the peer knows
						 * it is in common with us.
						 */
						const char *hex = sha1_to_hex(result_sha1);
						packet_buf_write(&req_buf, "have %s\n", hex);
						state_len = req_buf.len;
					}
					mark_common(commit, 0, 1);
					retval = 0;
					in_vain = 0;
					got_continue = 1;
					if (ack == ACK_ready) {
						clear_prio_queue(&rev_list);
						got_ready = 1;
					}
					break;
					}
				}
			} while (ack);
			flushes--;
			if (got_continue && MAX_IN_VAIN < in_vain) {
				if (args->verbose)
					fprintf(stderr, "giving up\n");
				break; /* give up */
			}
		}
	}
done:
	if (!got_ready || !no_done) {
		packet_buf_write(&req_buf, "done\n");
		send_request(args, fd[1], &req_buf);
	}
	if (args->verbose)
		fprintf(stderr, "done\n");
	if (retval != 0) {
		multi_ack = 0;
		flushes++;
	}
	strbuf_release(&req_buf);

	if (!got_ready || !no_done)
		consume_shallow_list(args, fd[0]);
	while (flushes || multi_ack) {
		int ack = get_ack(fd[0], result_sha1);
		if (ack) {
			if (args->verbose)
				fprintf(stderr, "got ack (%d) %s\n", ack,
					sha1_to_hex(result_sha1));
			if (ack == ACK)
				return 0;
			multi_ack = 1;
			continue;
		}
		flushes--;
	}
	/* it is no error to fetch into a completely empty repo */
	return count ? retval : 0;
}
Пример #21
0
static int execute(struct sockaddr *addr)
{
	static char line[1000];
	int pktlen, len, i;

	if (addr) {
		char addrbuf[256] = "";
		int port = -1;

		if (addr->sa_family == AF_INET) {
			struct sockaddr_in *sin_addr = (void *) addr;
			inet_ntop(addr->sa_family, &sin_addr->sin_addr, addrbuf, sizeof(addrbuf));
			port = ntohs(sin_addr->sin_port);
#ifndef NO_IPV6
		} else if (addr && addr->sa_family == AF_INET6) {
			struct sockaddr_in6 *sin6_addr = (void *) addr;

			char *buf = addrbuf;
			*buf++ = '['; *buf = '\0'; /* stpcpy() is cool */
			inet_ntop(AF_INET6, &sin6_addr->sin6_addr, buf, sizeof(addrbuf) - 1);
			strcat(buf, "]");

			port = ntohs(sin6_addr->sin6_port);
#endif
		}
		loginfo("Connection from %s:%d", addrbuf, port);
	}

	alarm(init_timeout ? init_timeout : timeout);
	pktlen = packet_read_line(0, line, sizeof(line));
	alarm(0);

	len = strlen(line);
	if (pktlen != len)
		loginfo("Extended attributes (%d bytes) exist <%.*s>",
			(int) pktlen - len,
			(int) pktlen - len, line + len + 1);
	if (len && line[len-1] == '\n') {
		line[--len] = 0;
		pktlen--;
	}

	/*
	 * Initialize the path interpolation table for this connection.
	 */
	interp_clear_table(interp_table, ARRAY_SIZE(interp_table));
	interp_set_entry(interp_table, INTERP_SLOT_PERCENT, "%");

	if (len != pktlen) {
	    parse_extra_args(interp_table, line + len + 1, pktlen - len - 1);
	    fill_in_extra_table_entries(interp_table);
	}

	for (i = 0; i < ARRAY_SIZE(daemon_service); i++) {
		struct daemon_service *s = &(daemon_service[i]);
		int namelen = strlen(s->name);
		if (!prefixcmp(line, "git-") &&
		    !strncmp(s->name, line + 4, namelen) &&
		    line[namelen + 4] == ' ') {
			/*
			 * Note: The directory here is probably context sensitive,
			 * and might depend on the actual service being performed.
			 */
			interp_set_entry(interp_table,
					 INTERP_SLOT_DIR, line + namelen + 5);
			return run_service(interp_table, s);
		}
	}

	logerror("Protocol error: '%s'", line);
	return -1;
}