diff options
Diffstat (limited to 'src/3rd_party/dbus-1.7.8/bus/main.c')
| -rw-r--r-- | src/3rd_party/dbus-1.7.8/bus/main.c | 654 |
1 files changed, 0 insertions, 654 deletions
diff --git a/src/3rd_party/dbus-1.7.8/bus/main.c b/src/3rd_party/dbus-1.7.8/bus/main.c deleted file mode 100644 index e060baa8e8..0000000000 --- a/src/3rd_party/dbus-1.7.8/bus/main.c +++ /dev/null @@ -1,654 +0,0 @@ -/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ -/* main.c main() for message bus - * - * Copyright (C) 2003 Red Hat, Inc. - * - * Licensed under the Academic Free License version 2.1 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - */ - -#include <config.h> -#include "bus.h" -#include "driver.h" -#include <dbus/dbus-internals.h> -#include <dbus/dbus-watch.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#ifdef HAVE_SIGNAL_H -#include <signal.h> -#endif -#ifdef HAVE_ERRNO_H -#include <errno.h> -#endif -#ifdef HAVE_UNISTD_H -#include <unistd.h> /* for write() and STDERR_FILENO */ -#endif -#include "selinux.h" - -static BusContext *context; - -#ifdef DBUS_UNIX - -static int reload_pipe[2]; -#define RELOAD_READ_END 0 -#define RELOAD_WRITE_END 1 - -static void close_reload_pipe (DBusWatch **); - -typedef enum - { - ACTION_RELOAD = 'r', - ACTION_QUIT = 'q' - } SignalAction; - -static void -signal_handler (int sig) -{ - switch (sig) - { - case SIGHUP: - { - DBusString str; - char action[2] = { ACTION_RELOAD, '\0' }; - - _dbus_string_init_const (&str, action); - if ((reload_pipe[RELOAD_WRITE_END] > 0) && - !_dbus_write_socket (reload_pipe[RELOAD_WRITE_END], &str, 0, 1)) - { - /* If we receive SIGHUP often enough to fill the pipe buffer (4096 - * times on old Linux, 65536 on modern Linux) before it can be - * drained, let's just warn and ignore. The configuration will be - * reloaded while draining the pipe buffer, which is what we - * wanted. It's harmless that it will be reloaded fewer times than - * we asked for, since the reload is delayed anyway, so new changes - * will be picked up. - * - * We use write() because _dbus_warn uses vfprintf, which isn't - * async-signal-safe. - * - * This is necessarily Unix-specific, but so are POSIX signals, - * so... */ - static const char message[] = - "Unable to write to reload pipe - buffer full?\n"; - - if (write (STDERR_FILENO, message, strlen (message)) != strlen (message)) - { - /* ignore failure to write out a warning */ - } - } - } - break; - - case SIGTERM: - { - DBusString str; - char action[2] = { ACTION_QUIT, '\0' }; - _dbus_string_init_const (&str, action); - if ((reload_pipe[RELOAD_WRITE_END] < 0) || - !_dbus_write_socket (reload_pipe[RELOAD_WRITE_END], &str, 0, 1)) - { - /* If we can't write to the socket, dying seems a more - * important response to SIGTERM than cleaning up sockets, - * so we exit. We'd use exit(), but that's not async-signal-safe, - * so we'll have to resort to _exit(). */ - static const char message[] = - "Unable to write termination signal to pipe - buffer full?\n" - "Will exit instead.\n"; - - if (write (STDERR_FILENO, message, strlen (message)) != strlen (message)) - { - /* ignore failure to write out a warning */ - } - _exit (1); - } - } - break; - } -} -#endif /* DBUS_UNIX */ - -static void -usage (void) -{ - fprintf (stderr, - DBUS_DAEMON_NAME - " [--version]" - " [--session]" - " [--system]" - " [--config-file=FILE]" - " [--print-address[=DESCRIPTOR]]" - " [--print-pid[=DESCRIPTOR]]" - " [--introspect]" - " [--address=ADDRESS]" - " [--nopidfile]" - " [--nofork]" -#ifdef DBUS_UNIX - " [--fork]" - " [--systemd-activation]" -#endif - "\n"); - exit (1); -} - -static void -version (void) -{ - printf ("D-Bus Message Bus Daemon %s\n" - "Copyright (C) 2002, 2003 Red Hat, Inc., CodeFactory AB, and others\n" - "This is free software; see the source for copying conditions.\n" - "There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n", - DBUS_VERSION_STRING); - exit (0); -} - -static void -introspect (void) -{ - DBusString xml; - const char *v_STRING; - - if (!_dbus_string_init (&xml)) - goto oom; - - if (!bus_driver_generate_introspect_string (&xml)) - { - _dbus_string_free (&xml); - goto oom; - } - - v_STRING = _dbus_string_get_const_data (&xml); - printf ("%s\n", v_STRING); - - exit (0); - - oom: - _dbus_warn ("Can not introspect - Out of memory\n"); - exit (1); -} - -static void -check_two_config_files (const DBusString *config_file, - const char *extra_arg) -{ - if (_dbus_string_get_length (config_file) > 0) - { - fprintf (stderr, "--%s specified but configuration file %s already requested\n", - extra_arg, _dbus_string_get_const_data (config_file)); - exit (1); - } -} - -static void -check_two_addresses (const DBusString *address, - const char *extra_arg) -{ - if (_dbus_string_get_length (address) > 0) - { - fprintf (stderr, "--%s specified but address %s already requested\n", - extra_arg, _dbus_string_get_const_data (address)); - exit (1); - } -} - -static void -check_two_addr_descriptors (const DBusString *addr_fd, - const char *extra_arg) -{ - if (_dbus_string_get_length (addr_fd) > 0) - { - fprintf (stderr, "--%s specified but printing address to %s already requested\n", - extra_arg, _dbus_string_get_const_data (addr_fd)); - exit (1); - } -} - -static void -check_two_pid_descriptors (const DBusString *pid_fd, - const char *extra_arg) -{ - if (_dbus_string_get_length (pid_fd) > 0) - { - fprintf (stderr, "--%s specified but printing pid to %s already requested\n", - extra_arg, _dbus_string_get_const_data (pid_fd)); - exit (1); - } -} - -#ifdef DBUS_UNIX -static dbus_bool_t -handle_reload_watch (DBusWatch *watch, - unsigned int flags, - void *data) -{ - DBusError error; - DBusString str; - char *action_str; - char action = '\0'; - - while (!_dbus_string_init (&str)) - _dbus_wait_for_memory (); - - if ((reload_pipe[RELOAD_READ_END] > 0) && - _dbus_read_socket (reload_pipe[RELOAD_READ_END], &str, 1) != 1) - { - _dbus_warn ("Couldn't read from reload pipe.\n"); - close_reload_pipe (&watch); - return TRUE; - } - - action_str = _dbus_string_get_data (&str); - if (action_str != NULL) - { - action = action_str[0]; - } - _dbus_string_free (&str); - - /* this can only fail if we don't understand the config file - * or OOM. Either way we should just stick with the currently - * loaded config. - */ - dbus_error_init (&error); - - switch (action) - { - case ACTION_RELOAD: - if (! bus_context_reload_config (context, &error)) - { - _DBUS_ASSERT_ERROR_IS_SET (&error); - _dbus_assert (dbus_error_has_name (&error, DBUS_ERROR_FAILED) || - dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY)); - _dbus_warn ("Unable to reload configuration: %s\n", - error.message); - dbus_error_free (&error); - } - break; - - case ACTION_QUIT: - { - DBusLoop *loop; - /* - * On OSs without abstract sockets, we want to quit - * gracefully rather than being killed by SIGTERM, - * so that DBusServer gets a chance to clean up the - * sockets from the filesystem. fd.o #38656 - */ - loop = bus_context_get_loop (context); - if (loop != NULL) - { - _dbus_loop_quit (loop); - } - } - break; - - default: - break; - } - - return TRUE; -} - -static void -setup_reload_pipe (DBusLoop *loop) -{ - DBusError error; - DBusWatch *watch; - - dbus_error_init (&error); - - if (!_dbus_full_duplex_pipe (&reload_pipe[0], &reload_pipe[1], - TRUE, &error)) - { - _dbus_warn ("Unable to create reload pipe: %s\n", - error.message); - dbus_error_free (&error); - exit (1); - } - - watch = _dbus_watch_new (reload_pipe[RELOAD_READ_END], - DBUS_WATCH_READABLE, TRUE, - handle_reload_watch, NULL, NULL); - - if (watch == NULL) - { - _dbus_warn ("Unable to create reload watch: %s\n", - error.message); - dbus_error_free (&error); - exit (1); - } - - if (!_dbus_loop_add_watch (loop, watch)) - { - _dbus_warn ("Unable to add reload watch to main loop: %s\n", - error.message); - dbus_error_free (&error); - exit (1); - } - -} - -static void -close_reload_pipe (DBusWatch **watch) -{ - _dbus_loop_remove_watch (bus_context_get_loop (context), *watch); - _dbus_watch_invalidate (*watch); - _dbus_watch_unref (*watch); - *watch = NULL; - - _dbus_close_socket (reload_pipe[RELOAD_READ_END], NULL); - reload_pipe[RELOAD_READ_END] = -1; - - _dbus_close_socket (reload_pipe[RELOAD_WRITE_END], NULL); - reload_pipe[RELOAD_WRITE_END] = -1; -} -#endif /* DBUS_UNIX */ - -int -main (int argc, char **argv) -{ - DBusError error; - DBusString config_file; - DBusString address; - DBusString addr_fd; - DBusString pid_fd; - const char *prev_arg; - DBusPipe print_addr_pipe; - DBusPipe print_pid_pipe; - int i; - dbus_bool_t print_address; - dbus_bool_t print_pid; - BusContextFlags flags; - - if (!_dbus_string_init (&config_file)) - return 1; - - if (!_dbus_string_init (&address)) - return 1; - - if (!_dbus_string_init (&addr_fd)) - return 1; - - if (!_dbus_string_init (&pid_fd)) - return 1; - - print_address = FALSE; - print_pid = FALSE; - - flags = BUS_CONTEXT_FLAG_WRITE_PID_FILE; - - prev_arg = NULL; - i = 1; - while (i < argc) - { - const char *arg = argv[i]; - - if (strcmp (arg, "--help") == 0 || - strcmp (arg, "-h") == 0 || - strcmp (arg, "-?") == 0) - { - usage (); - } - else if (strcmp (arg, "--version") == 0) - { - version (); - } - else if (strcmp (arg, "--introspect") == 0) - { - introspect (); - } - else if (strcmp (arg, "--nofork") == 0) - { - flags &= ~BUS_CONTEXT_FLAG_FORK_ALWAYS; - flags |= BUS_CONTEXT_FLAG_FORK_NEVER; - } -#ifdef DBUS_UNIX - else if (strcmp (arg, "--fork") == 0) - { - flags &= ~BUS_CONTEXT_FLAG_FORK_NEVER; - flags |= BUS_CONTEXT_FLAG_FORK_ALWAYS; - } - else if (strcmp (arg, "--systemd-activation") == 0) - { - flags |= BUS_CONTEXT_FLAG_SYSTEMD_ACTIVATION; - } -#endif - else if (strcmp (arg, "--nopidfile") == 0) - { - flags &= ~BUS_CONTEXT_FLAG_WRITE_PID_FILE; - } - else if (strcmp (arg, "--system") == 0) - { - check_two_config_files (&config_file, "system"); - - if (!_dbus_append_system_config_file (&config_file)) - exit (1); - } - else if (strcmp (arg, "--session") == 0) - { - check_two_config_files (&config_file, "session"); - - if (!_dbus_append_session_config_file (&config_file)) - exit (1); - } - else if (strstr (arg, "--config-file=") == arg) - { - const char *file; - - check_two_config_files (&config_file, "config-file"); - - file = strchr (arg, '='); - ++file; - - if (!_dbus_string_append (&config_file, file)) - exit (1); - } - else if (prev_arg && - strcmp (prev_arg, "--config-file") == 0) - { - check_two_config_files (&config_file, "config-file"); - - if (!_dbus_string_append (&config_file, arg)) - exit (1); - } - else if (strcmp (arg, "--config-file") == 0) - { - /* wait for next arg */ - } - else if (strstr (arg, "--address=") == arg) - { - const char *file; - - check_two_addresses (&address, "address"); - - file = strchr (arg, '='); - ++file; - - if (!_dbus_string_append (&address, file)) - exit (1); - } - else if (prev_arg && - strcmp (prev_arg, "--address") == 0) - { - check_two_addresses (&address, "address"); - - if (!_dbus_string_append (&address, arg)) - exit (1); - } - else if (strcmp (arg, "--address") == 0) - { - /* wait for next arg */ - } - else if (strstr (arg, "--print-address=") == arg) - { - const char *desc; - - check_two_addr_descriptors (&addr_fd, "print-address"); - - desc = strchr (arg, '='); - ++desc; - - if (!_dbus_string_append (&addr_fd, desc)) - exit (1); - - print_address = TRUE; - } - else if (prev_arg && - strcmp (prev_arg, "--print-address") == 0) - { - check_two_addr_descriptors (&addr_fd, "print-address"); - - if (!_dbus_string_append (&addr_fd, arg)) - exit (1); - - print_address = TRUE; - } - else if (strcmp (arg, "--print-address") == 0) - { - print_address = TRUE; /* and we'll get the next arg if appropriate */ - } - else if (strstr (arg, "--print-pid=") == arg) - { - const char *desc; - - check_two_pid_descriptors (&pid_fd, "print-pid"); - - desc = strchr (arg, '='); - ++desc; - - if (!_dbus_string_append (&pid_fd, desc)) - exit (1); - - print_pid = TRUE; - } - else if (prev_arg && - strcmp (prev_arg, "--print-pid") == 0) - { - check_two_pid_descriptors (&pid_fd, "print-pid"); - - if (!_dbus_string_append (&pid_fd, arg)) - exit (1); - - print_pid = TRUE; - } - else if (strcmp (arg, "--print-pid") == 0) - { - print_pid = TRUE; /* and we'll get the next arg if appropriate */ - } - else - { - usage (); - } - - prev_arg = arg; - - ++i; - } - - if (_dbus_string_get_length (&config_file) == 0) - { - fprintf (stderr, "No configuration file specified.\n"); - usage (); - } - - _dbus_pipe_invalidate (&print_addr_pipe); - if (print_address) - { - _dbus_pipe_init_stdout (&print_addr_pipe); - if (_dbus_string_get_length (&addr_fd) > 0) - { - long val; - int end; - if (!_dbus_string_parse_int (&addr_fd, 0, &val, &end) || - end != _dbus_string_get_length (&addr_fd) || - val < 0 || val > _DBUS_INT_MAX) - { - fprintf (stderr, "Invalid file descriptor: \"%s\"\n", - _dbus_string_get_const_data (&addr_fd)); - exit (1); - } - - _dbus_pipe_init (&print_addr_pipe, val); - } - } - _dbus_string_free (&addr_fd); - - _dbus_pipe_invalidate (&print_pid_pipe); - if (print_pid) - { - _dbus_pipe_init_stdout (&print_pid_pipe); - if (_dbus_string_get_length (&pid_fd) > 0) - { - long val; - int end; - if (!_dbus_string_parse_int (&pid_fd, 0, &val, &end) || - end != _dbus_string_get_length (&pid_fd) || - val < 0 || val > _DBUS_INT_MAX) - { - fprintf (stderr, "Invalid file descriptor: \"%s\"\n", - _dbus_string_get_const_data (&pid_fd)); - exit (1); - } - - _dbus_pipe_init (&print_pid_pipe, val); - } - } - _dbus_string_free (&pid_fd); - - if (!bus_selinux_pre_init ()) - { - _dbus_warn ("SELinux pre-initialization failed\n"); - exit (1); - } - - dbus_error_init (&error); - context = bus_context_new (&config_file, flags, - &print_addr_pipe, &print_pid_pipe, - _dbus_string_get_length(&address) > 0 ? &address : NULL, - &error); - _dbus_string_free (&config_file); - if (context == NULL) - { - _dbus_warn ("Failed to start message bus: %s\n", - error.message); - dbus_error_free (&error); - exit (1); - } - - /* bus_context_new() closes the print_addr_pipe and - * print_pid_pipe - */ - -#ifdef DBUS_UNIX - setup_reload_pipe (bus_context_get_loop (context)); - - /* POSIX signals are Unix-specific, and _dbus_set_signal_handler is - * unimplemented (and probably unimplementable) on Windows, so there's - * no point in trying to make the handler portable to non-Unix. */ - - _dbus_set_signal_handler (SIGTERM, signal_handler); - _dbus_set_signal_handler (SIGHUP, signal_handler); -#endif /* DBUS_UNIX */ - - _dbus_verbose ("We are on D-Bus...\n"); - _dbus_loop_run (bus_context_get_loop (context)); - - bus_context_shutdown (context); - bus_context_unref (context); - bus_selinux_shutdown (); - - return 0; -} |