diff options
Diffstat (limited to 'src/libsystemd/sd-bus/test-bus-chat.c')
| -rw-r--r-- | src/libsystemd/sd-bus/test-bus-chat.c | 539 |
1 files changed, 539 insertions, 0 deletions
diff --git a/src/libsystemd/sd-bus/test-bus-chat.c b/src/libsystemd/sd-bus/test-bus-chat.c new file mode 100644 index 0000000..da1340f --- /dev/null +++ b/src/libsystemd/sd-bus/test-bus-chat.c @@ -0,0 +1,539 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <fcntl.h> +#include <pthread.h> +#include <stdlib.h> +#include <unistd.h> + +#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; +} |