582 lines
18 KiB
C
582 lines
18 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <assert.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "log.h"
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#include "util.h"
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#include "macro.h"
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#include "sd-bus.h"
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#include "bus-message.h"
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#include "bus-error.h"
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#include "bus-match.h"
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#include "bus-internal.h"
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#include "bus-util.h"
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static int match_callback(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
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log_info("Match triggered! interface=%s member=%s", strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member(m)));
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return 0;
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}
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static int object_callback(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
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int r;
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assert(bus);
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if (sd_bus_message_is_method_error(m, NULL))
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return 0;
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if (sd_bus_message_is_method_call(m, "org.object.test", "Foobar")) {
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log_info("Invoked Foobar() on %s", sd_bus_message_get_path(m));
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r = sd_bus_reply_method_return(m, NULL);
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if (r < 0) {
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log_error("Failed to send reply: %s", strerror(-r));
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return r;
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}
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return 1;
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}
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return 0;
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}
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static int server_init(sd_bus **_bus) {
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sd_bus *bus = NULL;
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sd_id128_t id;
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int r;
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const char *unique;
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assert(_bus);
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r = sd_bus_open_user(&bus);
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if (r < 0) {
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log_error("Failed to connect to user bus: %s", strerror(-r));
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goto fail;
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}
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r = sd_bus_get_server_id(bus, &id);
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if (r < 0) {
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log_error("Failed to get server ID: %s", strerror(-r));
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goto fail;
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}
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r = sd_bus_get_unique_name(bus, &unique);
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if (r < 0) {
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log_error("Failed to get unique name: %s", strerror(-r));
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goto fail;
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}
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log_info("Peer ID is " SD_ID128_FORMAT_STR ".", SD_ID128_FORMAT_VAL(id));
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log_info("Unique ID: %s", unique);
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log_info("Can send file handles: %i", sd_bus_can_send(bus, 'h'));
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r = sd_bus_request_name(bus, "org.freedesktop.systemd.test", 0);
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if (r < 0) {
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log_error("Failed to acquire name: %s", strerror(-r));
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goto fail;
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}
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r = sd_bus_add_fallback(bus, "/foo/bar", object_callback, NULL);
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if (r < 0) {
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log_error("Failed to add object: %s", strerror(-r));
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goto fail;
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}
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r = sd_bus_add_match(bus, "type='signal',interface='foo.bar',member='Notify'", match_callback, NULL);
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if (r < 0) {
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log_error("Failed to add match: %s", strerror(-r));
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goto fail;
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}
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r = sd_bus_add_match(bus, "type='signal',interface='org.freedesktop.DBus',member='NameOwnerChanged'", match_callback, NULL);
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if (r < 0) {
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log_error("Failed to add match: %s", strerror(-r));
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goto fail;
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}
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bus_match_dump(&bus->match_callbacks, 0);
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*_bus = bus;
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return 0;
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fail:
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if (bus)
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sd_bus_unref(bus);
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return r;
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}
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static int server(sd_bus *bus) {
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int r;
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bool client1_gone = false, client2_gone = false;
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while (!client1_gone || !client2_gone) {
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_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
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pid_t pid = 0;
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const char *label = NULL;
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r = sd_bus_process(bus, &m);
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if (r < 0) {
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log_error("Failed to process requests: %s", strerror(-r));
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goto fail;
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}
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if (r == 0) {
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r = sd_bus_wait(bus, (uint64_t) -1);
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if (r < 0) {
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log_error("Failed to wait: %s", strerror(-r));
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goto fail;
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}
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continue;
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}
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if (!m)
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continue;
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sd_bus_creds_get_pid(sd_bus_message_get_creds(m), &pid);
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sd_bus_creds_get_selinux_context(sd_bus_message_get_creds(m), &label);
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log_info("Got message! member=%s pid=%lu label=%s",
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strna(sd_bus_message_get_member(m)),
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(unsigned long) pid,
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strna(label));
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/* bus_message_dump(m); */
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/* sd_bus_message_rewind(m, true); */
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if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "LowerCase")) {
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const char *hello;
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_cleanup_free_ char *lowercase = NULL;
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r = sd_bus_message_read(m, "s", &hello);
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if (r < 0) {
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log_error("Failed to get parameter: %s", strerror(-r));
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goto fail;
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}
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lowercase = strdup(hello);
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if (!lowercase) {
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r = log_oom();
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goto fail;
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}
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ascii_strlower(lowercase);
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r = sd_bus_reply_method_return(m, "s", lowercase);
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if (r < 0) {
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log_error("Failed to send reply: %s", strerror(-r));
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goto fail;
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}
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "ExitClient1")) {
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r = sd_bus_reply_method_return(m, NULL);
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if (r < 0) {
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log_error("Failed to send reply: %s", strerror(-r));
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goto fail;
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}
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client1_gone = true;
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "ExitClient2")) {
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r = sd_bus_reply_method_return(m, NULL);
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if (r < 0) {
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log_error("Failed to send reply: %s", strerror(-r));
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goto fail;
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}
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client2_gone = true;
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "Slow")) {
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sleep(1);
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r = sd_bus_reply_method_return(m, NULL);
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if (r < 0) {
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log_error("Failed to send reply: %s", strerror(-r));
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goto fail;
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}
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} else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "FileDescriptor")) {
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int fd;
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static const char x = 'X';
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r = sd_bus_message_read(m, "h", &fd);
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if (r < 0) {
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log_error("Failed to get parameter: %s", strerror(-r));
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goto fail;
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}
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log_info("Received fd=%d", fd);
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if (write(fd, &x, 1) < 0) {
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log_error("Failed to write to fd: %m");
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close_nointr_nofail(fd);
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goto fail;
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}
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r = sd_bus_reply_method_return(m, NULL);
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if (r < 0) {
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log_error("Failed to send reply: %s", strerror(-r));
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goto fail;
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}
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} else if (sd_bus_message_is_method_call(m, NULL, NULL)) {
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r = sd_bus_reply_method_error(
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m,
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&SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_UNKNOWN_METHOD, "Unknown method."));
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if (r < 0) {
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log_error("Failed to send reply: %s", strerror(-r));
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goto fail;
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}
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}
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}
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r = 0;
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fail:
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if (bus) {
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sd_bus_flush(bus);
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sd_bus_unref(bus);
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}
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return r;
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}
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static void* client1(void*p) {
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_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
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sd_bus *bus = NULL;
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sd_bus_error error = SD_BUS_ERROR_NULL;
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const char *hello;
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int r;
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int pp[2] = { -1, -1 };
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char x;
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r = sd_bus_open_user(&bus);
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if (r < 0) {
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log_error("Failed to connect to user bus: %s", strerror(-r));
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goto finish;
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}
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r = sd_bus_call_method(
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bus,
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"org.freedesktop.systemd.test",
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"/",
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"org.freedesktop.systemd.test",
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"LowerCase",
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&error,
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&reply,
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"s",
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"HELLO");
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if (r < 0) {
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log_error("Failed to issue method call: %s", strerror(-r));
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goto finish;
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}
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r = sd_bus_message_read(reply, "s", &hello);
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if (r < 0) {
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log_error("Failed to get string: %s", strerror(-r));
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goto finish;
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}
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assert(streq(hello, "hello"));
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if (pipe2(pp, O_CLOEXEC|O_NONBLOCK) < 0) {
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log_error("Failed to allocate pipe: %m");
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r = -errno;
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goto finish;
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}
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log_info("Sending fd=%d", pp[1]);
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r = sd_bus_call_method(
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bus,
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"org.freedesktop.systemd.test",
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"/",
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"org.freedesktop.systemd.test",
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"FileDescriptor",
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&error,
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NULL,
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"h",
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pp[1]);
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if (r < 0) {
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log_error("Failed to issue method call: %s", strerror(-r));
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goto finish;
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}
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errno = 0;
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if (read(pp[0], &x, 1) <= 0) {
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log_error("Failed to read from pipe: %s", errno ? strerror(errno) : "early read");
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goto finish;
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}
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|
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r = 0;
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finish:
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if (bus) {
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_cleanup_bus_message_unref_ sd_bus_message *q;
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|
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r = sd_bus_message_new_method_call(
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bus,
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"org.freedesktop.systemd.test",
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"/",
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"org.freedesktop.systemd.test",
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"ExitClient1",
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&q);
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if (r < 0)
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log_error("Failed to allocate method call: %s", strerror(-r));
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else
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sd_bus_send(bus, q, NULL);
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|
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sd_bus_flush(bus);
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sd_bus_unref(bus);
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|
}
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|
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sd_bus_error_free(&error);
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|
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close_pipe(pp);
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|
|
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return INT_TO_PTR(r);
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}
|
|
|
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static int quit_callback(sd_bus *b, sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
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bool *x = userdata;
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log_error("Quit callback: %s", strerror(sd_bus_message_get_errno(m)));
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|
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*x = 1;
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return 1;
|
|
}
|
|
|
|
static void* client2(void*p) {
|
|
_cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
|
|
sd_bus *bus = NULL;
|
|
sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
bool quit = false;
|
|
const char *mid;
|
|
int r;
|
|
|
|
r = sd_bus_open_user(&bus);
|
|
if (r < 0) {
|
|
log_error("Failed to connect to user bus: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
r = sd_bus_message_new_method_call(
|
|
bus,
|
|
"org.freedesktop.systemd.test",
|
|
"/foo/bar/waldo/piep",
|
|
"org.object.test",
|
|
"Foobar",
|
|
&m);
|
|
if (r < 0) {
|
|
log_error("Failed to allocate method call: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
r = sd_bus_send(bus, m, NULL);
|
|
if (r < 0) {
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|
log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
|
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goto finish;
|
|
}
|
|
|
|
sd_bus_message_unref(m);
|
|
m = NULL;
|
|
|
|
r = sd_bus_message_new_signal(
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|
bus,
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|
"/foobar",
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|
"foo.bar",
|
|
"Notify",
|
|
&m);
|
|
if (r < 0) {
|
|
log_error("Failed to allocate signal: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
r = sd_bus_send(bus, m, NULL);
|
|
if (r < 0) {
|
|
log_error("Failed to issue signal: %s", bus_error_message(&error, -r));
|
|
goto finish;
|
|
}
|
|
|
|
sd_bus_message_unref(m);
|
|
m = NULL;
|
|
|
|
r = sd_bus_message_new_method_call(
|
|
bus,
|
|
"org.freedesktop.systemd.test",
|
|
"/",
|
|
"org.freedesktop.DBus.Peer",
|
|
"GetMachineId",
|
|
&m);
|
|
if (r < 0) {
|
|
log_error("Failed to allocate method call: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
r = sd_bus_call(bus, m, 0, &error, &reply);
|
|
if (r < 0) {
|
|
log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
|
|
goto finish;
|
|
}
|
|
|
|
r = sd_bus_message_read(reply, "s", &mid);
|
|
if (r < 0) {
|
|
log_error("Failed to parse machine ID: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
log_info("Machine ID is %s.", mid);
|
|
|
|
sd_bus_message_unref(m);
|
|
m = NULL;
|
|
|
|
r = sd_bus_message_new_method_call(
|
|
bus,
|
|
"org.freedesktop.systemd.test",
|
|
"/",
|
|
"org.freedesktop.systemd.test",
|
|
"Slow",
|
|
&m);
|
|
if (r < 0) {
|
|
log_error("Failed to allocate method call: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
sd_bus_message_unref(reply);
|
|
reply = NULL;
|
|
|
|
r = sd_bus_call(bus, m, 200 * USEC_PER_MSEC, &error, &reply);
|
|
if (r < 0)
|
|
log_info("Failed to issue method call: %s", bus_error_message(&error, -r));
|
|
else
|
|
log_info("Slow call succeed.");
|
|
|
|
sd_bus_message_unref(m);
|
|
m = NULL;
|
|
|
|
r = sd_bus_message_new_method_call(
|
|
bus,
|
|
"org.freedesktop.systemd.test",
|
|
"/",
|
|
"org.freedesktop.systemd.test",
|
|
"Slow",
|
|
&m);
|
|
if (r < 0) {
|
|
log_error("Failed to allocate method call: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
r = sd_bus_call_async(bus, m, quit_callback, &quit, 200 * USEC_PER_MSEC, NULL);
|
|
if (r < 0) {
|
|
log_info("Failed to issue method call: %s", bus_error_message(&error, -r));
|
|
goto finish;
|
|
}
|
|
|
|
while (!quit) {
|
|
r = sd_bus_process(bus, NULL);
|
|
if (r < 0) {
|
|
log_error("Failed to process requests: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
if (r == 0) {
|
|
r = sd_bus_wait(bus, (uint64_t) -1);
|
|
if (r < 0) {
|
|
log_error("Failed to wait: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
}
|
|
}
|
|
|
|
r = 0;
|
|
|
|
finish:
|
|
if (bus) {
|
|
_cleanup_bus_message_unref_ sd_bus_message *q;
|
|
|
|
r = sd_bus_message_new_method_call(
|
|
bus,
|
|
"org.freedesktop.systemd.test",
|
|
"/",
|
|
"org.freedesktop.systemd.test",
|
|
"ExitClient2",
|
|
&q);
|
|
if (r < 0) {
|
|
log_error("Failed to allocate method call: %s", strerror(-r));
|
|
goto finish;
|
|
}
|
|
|
|
sd_bus_send(bus, q, NULL);
|
|
sd_bus_flush(bus);
|
|
sd_bus_unref(bus);
|
|
}
|
|
|
|
sd_bus_error_free(&error);
|
|
return INT_TO_PTR(r);
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
pthread_t c1, c2;
|
|
sd_bus *bus;
|
|
void *p;
|
|
int q, r;
|
|
|
|
r = server_init(&bus);
|
|
if (r < 0) {
|
|
log_info("Failed to connect to bus, skipping tests.");
|
|
return EXIT_TEST_SKIP;
|
|
}
|
|
|
|
log_info("Initialized...");
|
|
|
|
r = pthread_create(&c1, NULL, client1, bus);
|
|
if (r != 0)
|
|
return EXIT_FAILURE;
|
|
|
|
r = pthread_create(&c2, NULL, client2, bus);
|
|
if (r != 0)
|
|
return EXIT_FAILURE;
|
|
|
|
r = server(bus);
|
|
|
|
q = pthread_join(c1, &p);
|
|
if (q != 0)
|
|
return EXIT_FAILURE;
|
|
if (PTR_TO_INT(p) < 0)
|
|
return EXIT_FAILURE;
|
|
|
|
q = pthread_join(c2, &p);
|
|
if (q != 0)
|
|
return EXIT_FAILURE;
|
|
if (PTR_TO_INT(p) < 0)
|
|
return EXIT_FAILURE;
|
|
|
|
if (r < 0)
|
|
return EXIT_FAILURE;
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|