+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <sys/poll.h>
-#include <stddef.h>
-#include <getopt.h>
-
-#include "log.h"
-#include "util.h"
-#include "socket-util.h"
-#include "sd-daemon.h"
-#include "sd-bus.h"
-#include "bus-internal.h"
-#include "bus-message.h"
-#include "bus-util.h"
-#include "build.h"
-
-#define DEFAULT_BUS_PATH "unix:path=/run/dbus/system_bus_socket"
-
-const char *arg_bus_path = DEFAULT_BUS_PATH;
-
-static int help(void) {
-
- printf("%s [OPTIONS...]\n\n"
- "STDIO or socket-activatable proxy to a given DBus endpoint.\n\n"
- " -h --help Show this help\n"
- " --version Show package version\n"
- " --bus-path=PATH Path to the kernel bus (default: %s)\n",
- program_invocation_short_name, DEFAULT_BUS_PATH);
-
- return 0;
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
- enum {
- ARG_VERSION = 0x100,
- };
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "bus-path", required_argument, NULL, 'p' },
- { NULL, 0, NULL, 0 }
- };
-
- int c;
-
- assert(argc >= 0);
- assert(argv);
-
- while ((c = getopt_long(argc, argv, "hsup:", options, NULL)) >= 0) {
-
- switch (c) {
-
- case 'h':
- help();
- return 0;
-
- case ARG_VERSION:
- puts(PACKAGE_STRING);
- puts(SYSTEMD_FEATURES);
- return 0;
-
- case '?':
- return -EINVAL;
-
- case 'p':
- arg_bus_path = optarg;
- break;
-
- default:
- log_error("Unknown option code %c", c);
- return -EINVAL;
- }
- }
-
- return 1;
-}
-
-int main(int argc, char *argv[]) {
- _cleanup_bus_unref_ sd_bus *a = NULL, *b = NULL;
- sd_id128_t server_id;
- bool is_unix;
- int r, in_fd, out_fd;
-
- log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
- log_parse_environment();
- log_open();
-
- r = parse_argv(argc, argv);
- if (r <= 0)
- goto finish;
-
- r = sd_listen_fds(0);
- if (r == 0) {
- in_fd = STDIN_FILENO;
- out_fd = STDOUT_FILENO;
- } else if (r == 1) {
- in_fd = SD_LISTEN_FDS_START;
- out_fd = SD_LISTEN_FDS_START;
- } else {
- log_error("Illegal number of file descriptors passed\n");
- goto finish;
- }
-
- is_unix =
- sd_is_socket(in_fd, AF_UNIX, 0, 0) > 0 &&
- sd_is_socket(out_fd, AF_UNIX, 0, 0) > 0;
-
- r = sd_bus_new(&a);
- if (r < 0) {
- log_error("Failed to allocate bus: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_set_address(a, arg_bus_path);
- if (r < 0) {
- log_error("Failed to set address to connect to: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_negotiate_fds(a, is_unix);
- if (r < 0) {
- log_error("Failed to set FD negotiation: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_start(a);
- if (r < 0) {
- log_error("Failed to start bus client: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_get_server_id(a, &server_id);
- if (r < 0) {
- log_error("Failed to get server ID: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_new(&b);
- if (r < 0) {
- log_error("Failed to allocate bus: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_set_fd(b, in_fd, out_fd);
- if (r < 0) {
- log_error("Failed to set fds: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_set_server(b, 1, server_id);
- if (r < 0) {
- log_error("Failed to set server mode: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_negotiate_fds(b, is_unix);
- if (r < 0) {
- log_error("Failed to set FD negotiation: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_set_anonymous(b, true);
- if (r < 0) {
- log_error("Failed to set anonymous authentication: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_start(b);
- if (r < 0) {
- log_error("Failed to start bus client: %s", strerror(-r));
- goto finish;
- }
-
- for (;;) {
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- int events_a, events_b, fd;
- uint64_t timeout_a, timeout_b, t;
- struct timespec _ts, *ts;
-
- r = sd_bus_process(a, &m);
- if (r < 0) {
- log_error("Failed to process bus a: %s", strerror(-r));
- goto finish;
- }
-
- if (m) {
- r = sd_bus_send(b, m, NULL);
- if (r < 0) {
- log_error("Failed to send message: %s", strerror(-r));
- goto finish;
- }
- }
-
- if (r > 0)
- continue;
-
- r = sd_bus_process(b, &m);
- if (r < 0) {
- /* treat 'connection reset by peer' as clean exit condition */
- if (r == -ECONNRESET)
- r = 0;
-
- goto finish;
- }
-
- if (m) {
- r = sd_bus_send(a, m, NULL);
- if (r < 0) {
- log_error("Failed to send message: %s", strerror(-r));
- goto finish;
- }
- }
-
- if (r > 0)
- continue;
-
- fd = sd_bus_get_fd(a);
- if (fd < 0) {
- log_error("Failed to get fd: %s", strerror(-r));
- goto finish;
- }
-
- events_a = sd_bus_get_events(a);
- if (events_a < 0) {
- log_error("Failed to get events mask: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_get_timeout(a, &timeout_a);
- if (r < 0) {
- log_error("Failed to get timeout: %s", strerror(-r));
- goto finish;
- }
-
- events_b = sd_bus_get_events(b);
- if (events_b < 0) {
- log_error("Failed to get events mask: %s", strerror(-r));
- goto finish;
- }
-
- r = sd_bus_get_timeout(b, &timeout_b);
- if (r < 0) {
- log_error("Failed to get timeout: %s", strerror(-r));
- goto finish;
- }
-
- t = timeout_a;
- if (t == (uint64_t) -1 || (timeout_b != (uint64_t) -1 && timeout_b < timeout_a))
- t = timeout_b;
-
- if (t == (uint64_t) -1)
- ts = NULL;
- else {
- usec_t nw;
-
- nw = now(CLOCK_MONOTONIC);
- if (t > nw)
- t -= nw;
- else
- t = 0;
-
- ts = timespec_store(&_ts, t);
- }
-
- {
- struct pollfd p[3] = {
- {.fd = fd, .events = events_a, },
- {.fd = STDIN_FILENO, .events = events_b & POLLIN, },
- {.fd = STDOUT_FILENO, .events = events_b & POLLOUT, }};
-
- r = ppoll(p, ELEMENTSOF(p), ts, NULL);
- }
- if (r < 0) {
- log_error("ppoll() failed: %m");
- goto finish;
- }
- }
-
- r = 0;
-
-finish:
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}
~ianmdlvl / elogind.git / blobdiff