| /* SPDX-License-Identifier: LGPL-2.1+ */ |
| /*** |
| ***/ |
| |
| #include <pthread.h> |
| |
| #include "sd-bus.h" |
| #include "sd-event.h" |
| #include "sd-id128.h" |
| |
| #include "alloc-util.h" |
| #include "fd-util.h" |
| #include "fileio.h" |
| #include "fs-util.h" |
| #include "mkdir.h" |
| #include "path-util.h" |
| #include "random-util.h" |
| #include "rm-rf.h" |
| #include "socket-util.h" |
| #include "string-util.h" |
| |
| static int method_foobar(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
| log_info("Got Foobar() call."); |
| |
| assert_se(sd_event_exit(sd_bus_get_event(sd_bus_message_get_bus(m)), 0) >= 0); |
| return sd_bus_reply_method_return(m, NULL); |
| } |
| |
| static int method_exit(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
| log_info("Got Exit() call"); |
| assert_se(sd_event_exit(sd_bus_get_event(sd_bus_message_get_bus(m)), 1) >= 0); |
| return sd_bus_reply_method_return(m, NULL); |
| } |
| |
| static const sd_bus_vtable vtable[] = { |
| SD_BUS_VTABLE_START(0), |
| SD_BUS_METHOD("Foobar", NULL, NULL, method_foobar, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("Exit", NULL, NULL, method_exit, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_VTABLE_END, |
| }; |
| |
| static void* thread_server(void *p) { |
| _cleanup_free_ char *suffixed = NULL, *suffixed2 = NULL, *d = NULL; |
| _cleanup_close_ int fd = -1; |
| union sockaddr_union u = { |
| .un.sun_family = AF_UNIX, |
| }; |
| const char *path = p; |
| |
| log_debug("Initializing server"); |
| |
| /* Let's play some games, by slowly creating the socket directory, and renaming it in the middle */ |
| (void) usleep(100 * USEC_PER_MSEC); |
| |
| assert_se(mkdir_parents(path, 0755) >= 0); |
| (void) usleep(100 * USEC_PER_MSEC); |
| |
| d = dirname_malloc(path); |
| assert_se(d); |
| assert_se(asprintf(&suffixed, "%s.%" PRIx64, d, random_u64()) >= 0); |
| assert_se(rename(d, suffixed) >= 0); |
| (void) usleep(100 * USEC_PER_MSEC); |
| |
| assert_se(asprintf(&suffixed2, "%s.%" PRIx64, d, random_u64()) >= 0); |
| assert_se(symlink(suffixed2, d) >= 0); |
| (void) usleep(100 * USEC_PER_MSEC); |
| |
| assert_se(symlink(basename(suffixed), suffixed2) >= 0); |
| (void) usleep(100 * USEC_PER_MSEC); |
| |
| strncpy(u.un.sun_path, path, sizeof(u.un.sun_path)); |
| |
| fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0); |
| assert_se(fd >= 0); |
| |
| assert_se(bind(fd, &u.sa, SOCKADDR_UN_LEN(u.un)) >= 0); |
| usleep(100 * USEC_PER_MSEC); |
| |
| assert_se(listen(fd, SOMAXCONN) >= 0); |
| usleep(100 * USEC_PER_MSEC); |
| |
| assert_se(touch(path) >= 0); |
| usleep(100 * USEC_PER_MSEC); |
| |
| log_debug("Initialized server"); |
| |
| for (;;) { |
| _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; |
| _cleanup_(sd_event_unrefp) sd_event *event = NULL; |
| sd_id128_t id; |
| int bus_fd, code; |
| |
| assert_se(sd_id128_randomize(&id) >= 0); |
| |
| assert_se(sd_event_new(&event) >= 0); |
| |
| bus_fd = accept4(fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC); |
| assert_se(bus_fd >= 0); |
| |
| log_debug("Accepted server connection"); |
| |
| assert_se(sd_bus_new(&bus) >= 0); |
| assert_se(sd_bus_set_description(bus, "server") >= 0); |
| assert_se(sd_bus_set_fd(bus, bus_fd, bus_fd) >= 0); |
| assert_se(sd_bus_set_server(bus, true, id) >= 0); |
| /* assert_se(sd_bus_set_anonymous(bus, true) >= 0); */ |
| |
| assert_se(sd_bus_attach_event(bus, event, 0) >= 0); |
| |
| assert_se(sd_bus_add_object_vtable(bus, NULL, "/foo", "foo.TestInterface", vtable, NULL) >= 0); |
| |
| assert_se(sd_bus_start(bus) >= 0); |
| |
| assert_se(sd_event_loop(event) >= 0); |
| |
| assert_se(sd_event_get_exit_code(event, &code) >= 0); |
| |
| if (code > 0) |
| break; |
| } |
| |
| log_debug("Server done"); |
| |
| return NULL; |
| } |
| |
| static void* thread_client1(void *p) { |
| _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
| _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; |
| const char *path = p, *t; |
| int r; |
| |
| log_debug("Initializing client1"); |
| |
| assert_se(sd_bus_new(&bus) >= 0); |
| assert_se(sd_bus_set_description(bus, "client1") >= 0); |
| |
| t = strjoina("unix:path=", path); |
| assert_se(sd_bus_set_address(bus, t) >= 0); |
| assert_se(sd_bus_set_watch_bind(bus, true) >= 0); |
| assert_se(sd_bus_start(bus) >= 0); |
| |
| r = sd_bus_call_method(bus, "foo.bar", "/foo", "foo.TestInterface", "Foobar", &error, NULL, NULL); |
| assert_se(r >= 0); |
| |
| log_debug("Client1 done"); |
| |
| return NULL; |
| } |
| |
| static int client2_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
| assert_se(sd_bus_message_is_method_error(m, NULL) == 0); |
| assert_se(sd_event_exit(sd_bus_get_event(sd_bus_message_get_bus(m)), 0) >= 0); |
| return 0; |
| } |
| |
| static void* thread_client2(void *p) { |
| _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; |
| _cleanup_(sd_event_unrefp) sd_event *event = NULL; |
| const char *path = p, *t; |
| |
| log_debug("Initializing client2"); |
| |
| assert_se(sd_event_new(&event) >= 0); |
| assert_se(sd_bus_new(&bus) >= 0); |
| assert_se(sd_bus_set_description(bus, "client2") >= 0); |
| |
| t = strjoina("unix:path=", path); |
| assert_se(sd_bus_set_address(bus, t) >= 0); |
| assert_se(sd_bus_set_watch_bind(bus, true) >= 0); |
| assert_se(sd_bus_attach_event(bus, event, 0) >= 0); |
| assert_se(sd_bus_start(bus) >= 0); |
| |
| assert_se(sd_bus_call_method_async(bus, NULL, "foo.bar", "/foo", "foo.TestInterface", "Foobar", client2_callback, NULL, NULL) >= 0); |
| |
| assert_se(sd_event_loop(event) >= 0); |
| |
| log_debug("Client2 done"); |
| |
| return NULL; |
| } |
| |
| static void request_exit(const char *path) { |
| _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; |
| const char *t; |
| |
| assert_se(sd_bus_new(&bus) >= 0); |
| |
| t = strjoina("unix:path=", path); |
| assert_se(sd_bus_set_address(bus, t) >= 0); |
| assert_se(sd_bus_set_watch_bind(bus, true) >= 0); |
| assert_se(sd_bus_set_description(bus, "request-exit") >= 0); |
| assert_se(sd_bus_start(bus) >= 0); |
| |
| assert_se(sd_bus_call_method(bus, "foo.bar", "/foo", "foo.TestInterface", "Exit", NULL, NULL, NULL) >= 0); |
| } |
| |
| int main(int argc, char *argv[]) { |
| _cleanup_(rm_rf_physical_and_freep) char *d = NULL; |
| pthread_t server, client1, client2; |
| char *path; |
| |
| log_set_max_level(LOG_DEBUG); |
| |
| /* We use /dev/shm here rather than /tmp, since some weird distros might set up /tmp as some weird fs that |
| * doesn't support inotify properly. */ |
| assert_se(mkdtemp_malloc("/dev/shm/systemd-watch-bind-XXXXXX", &d) >= 0); |
| |
| path = strjoina(d, "/this/is/a/socket"); |
| |
| assert_se(pthread_create(&server, NULL, thread_server, path) == 0); |
| assert_se(pthread_create(&client1, NULL, thread_client1, path) == 0); |
| assert_se(pthread_create(&client2, NULL, thread_client2, path) == 0); |
| |
| assert_se(pthread_join(client1, NULL) == 0); |
| assert_se(pthread_join(client2, NULL) == 0); |
| |
| request_exit(path); |
| |
| assert_se(pthread_join(server, NULL) == 0); |
| |
| return 0; |
| } |