diff options
Diffstat (limited to 'src/libsystemd/sd-bus/test-bus-watch-bind.c')
| -rw-r--r-- | src/libsystemd/sd-bus/test-bus-watch-bind.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/src/libsystemd/sd-bus/test-bus-watch-bind.c b/src/libsystemd/sd-bus/test-bus-watch-bind.c new file mode 100644 index 0000000..7f73c6e --- /dev/null +++ b/src/libsystemd/sd-bus/test-bus-watch-bind.c @@ -0,0 +1,228 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <pthread.h> + +#include "sd-bus.h" +#include "sd-event.h" +#include "sd-id128.h" + +#include "alloc-util.h" +#include "bus-internal.h" +#include "fd-util.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" +#include "tmpfile-util.h" +#include "tests.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_bus_reply_method_return(m, NULL) >= 0); + /* Simulate D-Bus going away to test the bus_exit_now() path with exit_on_disconnect set */ + bus_enter_closing(sd_bus_message_get_bus(m)); + return 0; +} + +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 = -EBADF; + union sockaddr_union u; + const char *path = p; + int r; + + log_debug("Initializing server"); + + /* Let's play some games, by slowly creating the socket directory, and renaming it in the middle */ + usleep_safe(100 * USEC_PER_MSEC); + + assert_se(mkdir_parents(path, 0755) >= 0); + usleep_safe(100 * USEC_PER_MSEC); + + assert_se(path_extract_directory(path, &d) >= 0); + assert_se(asprintf(&suffixed, "%s.%" PRIx64, d, random_u64()) >= 0); + assert_se(rename(d, suffixed) >= 0); + usleep_safe(100 * USEC_PER_MSEC); + + assert_se(asprintf(&suffixed2, "%s.%" PRIx64, d, random_u64()) >= 0); + assert_se(symlink(suffixed2, d) >= 0); + usleep_safe(100 * USEC_PER_MSEC); + + assert_se(symlink(basename(suffixed), suffixed2) >= 0); + usleep_safe(100 * USEC_PER_MSEC); + + socklen_t sa_len; + r = sockaddr_un_set_path(&u.un, path); + assert_se(r >= 0); + sa_len = r; + + fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0); + assert_se(fd >= 0); + + assert_se(bind(fd, &u.sa, sa_len) >= 0); + usleep_safe(100 * USEC_PER_MSEC); + + assert_se(listen(fd, SOMAXCONN_DELUXE) >= 0); + usleep_safe(100 * USEC_PER_MSEC); + + assert_se(touch(path) >= 0); + usleep_safe(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_exit_on_disconnect(bus, true) >= 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; + + test_setup_logging(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; +} |