/* SPDX-License-Identifier: LGPL-2.1-or-later */ #include #include #include #include #include "sd-bus.h" #include "alloc-util.h" #include "bus-error.h" #include "bus-internal.h" #include "bus-match.h" #include "errno-util.h" #include "fd-util.h" #include "format-util.h" #include "log.h" #include "macro.h" #include "string-util.h" #include "tests.h" static int match_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { log_info("Match triggered! destination=%s interface=%s member=%s", strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member(m))); return 0; } static int object_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { int r; if (sd_bus_message_is_method_error(m, NULL)) return 0; if (sd_bus_message_is_method_call(m, "org.object.test", "Foobar")) { log_info("Invoked Foobar() on %s", sd_bus_message_get_path(m)); r = sd_bus_reply_method_return(m, NULL); if (r < 0) return log_error_errno(r, "Failed to send reply: %m"); return 1; } return 0; } static int server_init(sd_bus **ret_bus) { _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; const char *unique, *desc; sd_id128_t id; int r; assert_se(ret_bus); r = sd_bus_open_user_with_description(&bus, "my bus!"); if (r < 0) return log_error_errno(r, "Failed to connect to user bus: %m"); r = sd_bus_get_bus_id(bus, &id); if (r < 0) return log_error_errno(r, "Failed to get server ID: %m"); r = sd_bus_get_unique_name(bus, &unique); if (r < 0) return log_error_errno(r, "Failed to get unique name: %m"); assert_se(sd_bus_get_description(bus, &desc) >= 0); assert_se(streq(desc, "my bus!")); log_info("Peer ID is " SD_ID128_FORMAT_STR ".", SD_ID128_FORMAT_VAL(id)); log_info("Unique ID: %s", unique); log_info("Can send file handles: %i", sd_bus_can_send(bus, 'h')); r = sd_bus_request_name(bus, "org.freedesktop.systemd.test", 0); if (r < 0) return log_error_errno(r, "Failed to acquire name: %m"); r = sd_bus_add_fallback(bus, NULL, "/foo/bar", object_callback, NULL); if (r < 0) return log_error_errno(r, "Failed to add object: %m"); r = sd_bus_match_signal(bus, NULL, NULL, NULL, "foo.bar", "Notify", match_callback, NULL); if (r < 0) return log_error_errno(r, "Failed to request match: %m"); r = sd_bus_match_signal(bus, NULL, NULL, NULL, "foo.bar", "NotifyTo", match_callback, NULL); if (r < 0) return log_error_errno(r, "Failed to request match: %m"); r = sd_bus_add_match(bus, NULL, "type='signal',interface='org.freedesktop.DBus',member='NameOwnerChanged'", match_callback, NULL); if (r < 0) return log_error_errno(r, "Failed to add match: %m"); bus_match_dump(stdout, &bus->match_callbacks, 0); *ret_bus = TAKE_PTR(bus); return 0; } static int server(sd_bus *_bus) { _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = ASSERT_PTR(_bus); bool client1_gone = false, client2_gone = false; int r; while (!client1_gone || !client2_gone) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; pid_t pid = 0; const char *label = NULL; r = sd_bus_process(bus, &m); if (r < 0) return log_error_errno(r, "Failed to process requests: %m"); if (r == 0) { r = sd_bus_wait(bus, UINT64_MAX); if (r < 0) return log_error_errno(r, "Failed to wait: %m"); continue; } if (!m) continue; r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_AUGMENT | SD_BUS_CREDS_PID | SD_BUS_CREDS_SELINUX_CONTEXT, &creds); if (r < 0) log_debug_errno(r, "Failed to query sender credentials, ignoring: %m"); else { r = sd_bus_creds_get_pid(creds, &pid); if (r < 0) return log_error_errno(r, "Failed to get sender pid: %m"); (void) sd_bus_creds_get_selinux_context(creds, &label); } log_info("Got message! member=%s pid="PID_FMT" label=%s", strna(sd_bus_message_get_member(m)), pid, strna(label)); /* sd_bus_message_dump(m); */ /* sd_bus_message_rewind(m, true); */ if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "LowerCase")) { const char *hello; _cleanup_free_ char *lowercase = NULL; r = sd_bus_message_read(m, "s", &hello); if (r < 0) return log_error_errno(r, "Failed to get parameter: %m"); lowercase = strdup(hello); if (!lowercase) return log_oom(); ascii_strlower(lowercase); r = sd_bus_reply_method_return(m, "s", lowercase); if (r < 0) return log_error_errno(r, "Failed to send reply: %m"); } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "ExitClient1")) { r = sd_bus_reply_method_return(m, NULL); if (r < 0) return log_error_errno(r, "Failed to send reply: %m"); client1_gone = true; } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "ExitClient2")) { r = sd_bus_reply_method_return(m, NULL); if (r < 0) return log_error_errno(r, "Failed to send reply: %m"); client2_gone = true; } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "Slow")) { sleep(1); r = sd_bus_reply_method_return(m, NULL); if (r < 0) return log_error_errno(r, "Failed to send reply: %m"); } else if (sd_bus_message_is_method_call(m, "org.freedesktop.systemd.test", "FileDescriptor")) { int fd; static const char x = 'X'; r = sd_bus_message_read(m, "h", &fd); if (r < 0) return log_error_errno(r, "Failed to get parameter: %m"); log_info("Received fd=%d", fd); if (write(fd, &x, 1) < 0) { r = log_error_errno(errno, "Failed to write to fd: %m"); safe_close(fd); return r; } r = sd_bus_reply_method_return(m, NULL); if (r < 0) return log_error_errno(r, "Failed to send reply: %m"); } else if (sd_bus_message_is_method_call(m, NULL, NULL)) { r = sd_bus_reply_method_error( m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_UNKNOWN_METHOD, "Unknown method.")); if (r < 0) return log_error_errno(r, "Failed to send reply: %m"); } } return 0; } static void* client1(void *p) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; const char *hello; int r; _cleanup_close_pair_ int pp[2] = EBADF_PAIR; char x; r = sd_bus_open_user(&bus); if (r < 0) { log_error_errno(r, "Failed to connect to user bus: %m"); goto finish; } r = sd_bus_call_method( bus, "org.freedesktop.systemd.test", "/", "org.freedesktop.systemd.test", "LowerCase", &error, &reply, "s", "HELLO"); if (r < 0) { log_error_errno(r, "Failed to issue method call: %m"); goto finish; } r = sd_bus_message_read(reply, "s", &hello); if (r < 0) { log_error_errno(r, "Failed to get string: %m"); goto finish; } assert_se(streq(hello, "hello")); if (pipe2(pp, O_CLOEXEC|O_NONBLOCK) < 0) { r = log_error_errno(errno, "Failed to allocate pipe: %m"); goto finish; } log_info("Sending fd=%d", pp[1]); r = sd_bus_call_method( bus, "org.freedesktop.systemd.test", "/", "org.freedesktop.systemd.test", "FileDescriptor", &error, NULL, "h", pp[1]); if (r < 0) { log_error_errno(r, "Failed to issue method call: %m"); goto finish; } errno = 0; if (read(pp[0], &x, 1) <= 0) { log_error("Failed to read from pipe: %s", STRERROR_OR_EOF(errno)); goto finish; } r = 0; finish: if (bus) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *q = NULL; r = sd_bus_message_new_method_call( bus, &q, "org.freedesktop.systemd.test", "/", "org.freedesktop.systemd.test", "ExitClient1"); if (r < 0) log_error_errno(r, "Failed to allocate method call: %m"); else sd_bus_send(bus, q, NULL); } return INT_TO_PTR(r); } static int quit_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { bool *x = userdata; log_error_errno(sd_bus_message_get_errno(m), "Quit callback: %m"); *x = 1; return 1; } static void* client2(void *p) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; _cleanup_(sd_bus_error_free) 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_errno(r, "Failed to connect to user bus: %m"); goto finish; } r = sd_bus_message_new_method_call( bus, &m, "org.freedesktop.systemd.test", "/foo/bar/waldo/piep", "org.object.test", "Foobar"); if (r < 0) { log_error_errno(r, "Failed to allocate method call: %m"); goto finish; } r = sd_bus_send(bus, m, NULL); if (r < 0) { log_error("Failed to issue method call: %s", bus_error_message(&error, r)); goto finish; } m = sd_bus_message_unref(m); r = sd_bus_message_new_signal( bus, &m, "/foobar", "foo.bar", "Notify"); if (r < 0) { log_error_errno(r, "Failed to allocate signal: %m"); 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; } m = sd_bus_message_unref(m); r = sd_bus_message_new_signal_to( bus, &m, "org.freedesktop.systemd.test", "/foobar", "foo.bar", "NotifyTo"); if (r < 0) { log_error_errno(r, "Failed to allocate signal to: %m"); goto finish; } r = sd_bus_send(bus, m, NULL); if (r < 0) { log_error("Failed to issue signal to: %s", bus_error_message(&error, r)); goto finish; } m = sd_bus_message_unref(m); r = sd_bus_message_new_method_call( bus, &m, "org.freedesktop.systemd.test", "/", "org.freedesktop.DBus.Peer", "GetMachineId"); if (r < 0) { log_error_errno(r, "Failed to allocate method call: %m"); 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_errno(r, "Failed to parse machine ID: %m"); goto finish; } log_info("Machine ID is %s.", mid); m = sd_bus_message_unref(m); r = sd_bus_message_new_method_call( bus, &m, "org.freedesktop.systemd.test", "/", "org.freedesktop.systemd.test", "Slow"); if (r < 0) { log_error_errno(r, "Failed to allocate method call: %m"); goto finish; } reply = sd_bus_message_unref(reply); r = sd_bus_call(bus, m, 200 * USEC_PER_MSEC, &error, &reply); if (r < 0) log_debug("Failed to issue method call: %s", bus_error_message(&error, r)); else { log_error("Slow call unexpectedly succeed."); r = -ENOANO; goto finish; } m = sd_bus_message_unref(m); r = sd_bus_message_new_method_call( bus, &m, "org.freedesktop.systemd.test", "/", "org.freedesktop.systemd.test", "Slow"); if (r < 0) { log_error_errno(r, "Failed to allocate method call: %m"); goto finish; } r = sd_bus_call_async(bus, NULL, m, quit_callback, &quit, 200 * USEC_PER_MSEC); 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_errno(r, "Failed to process requests: %m"); goto finish; } if (r == 0) { r = sd_bus_wait(bus, UINT64_MAX); if (r < 0) { log_error_errno(r, "Failed to wait: %m"); goto finish; } } } r = 0; finish: if (bus) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *q = NULL; r = sd_bus_message_new_method_call( bus, &q, "org.freedesktop.systemd.test", "/", "org.freedesktop.systemd.test", "ExitClient2"); if (r < 0) { log_error_errno(r, "Failed to allocate method call: %m"); goto finish; } (void) sd_bus_send(bus, q, NULL); } return INT_TO_PTR(r); } int main(int argc, char *argv[]) { pthread_t c1, c2; sd_bus *bus; void *p; int q, r; test_setup_logging(LOG_INFO); r = server_init(&bus); if (r < 0) return log_tests_skipped("Failed to connect to bus"); 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; }