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-rw-r--r--src/libsystemd-bus/busctl.c266
1 files changed, 250 insertions, 16 deletions
diff --git a/src/libsystemd-bus/busctl.c b/src/libsystemd-bus/busctl.c
index 7348894c5b..220c1eb34e 100644
--- a/src/libsystemd-bus/busctl.c
+++ b/src/libsystemd-bus/busctl.c
@@ -19,33 +19,49 @@
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
+#include <getopt.h>
+
#include "strv.h"
#include "util.h"
#include "log.h"
+#include "build.h"
+#include "pager.h"
#include "sd-bus.h"
#include "bus-message.h"
#include "bus-internal.h"
-int main(int argc, char *argv[]) {
- _cleanup_bus_unref_ sd_bus *bus = NULL;
+static bool arg_no_pager = false;
+static char *arg_address = NULL;
+static bool arg_user = false;
+static bool arg_no_unique = false;
+static char **arg_matches = NULL;
+
+static void pager_open_if_enabled(void) {
+
+ /* Cache result before we open the pager */
+ if (arg_no_pager)
+ return;
+
+ pager_open(false);
+}
+
+static int list_bus_names(sd_bus *bus, char **argv) {
_cleanup_strv_free_ char **l = NULL;
char **i;
int r;
size_t max_i = 0;
- r = sd_bus_open_user(&bus);
- if (r < 0) {
- log_error("Failed to connect to bus: %s", strerror(-r));
- goto fail;
- }
+ assert(bus);
r = sd_bus_list_names(bus, &l);
if (r < 0) {
log_error("Failed to list names: %s", strerror(-r));
- goto fail;
+ return r;
}
+ pager_open_if_enabled();
+
strv_sort(l);
STRV_FOREACH(i, l)
@@ -59,8 +75,8 @@ int main(int argc, char *argv[]) {
pid_t pid;
uid_t uid;
- /* if ((*i)[0] == ':') */
- /* continue; */
+ if (arg_no_unique && (*i)[0] == ':')
+ continue;
printf("%-*s", (int) max_i, *i);
@@ -80,10 +96,8 @@ int main(int argc, char *argv[]) {
_cleanup_free_ char *u = NULL;
u = uid_to_name(uid);
- if (!u) {
- log_oom();
- goto fail;
- }
+ if (!u)
+ return log_oom();
if (strlen(u) > 16)
u[16] = 0;
@@ -99,8 +113,228 @@ int main(int argc, char *argv[]) {
printf(" -\n");
}
- r = 0;
+ return 0;
+}
+
+static int monitor(sd_bus *bus, char *argv[]) {
+ char **i;
+ int r;
+
+ STRV_FOREACH(i, argv+1) {
+ _cleanup_free_ char *m = NULL;
+
+ if (!service_name_is_valid(*i)) {
+ log_error("Invalid service name '%s'", *i);
+ return -EINVAL;
+ }
+
+ m = strjoin("sender='", *i, "'", NULL);
+ if (!m)
+ return log_oom();
+
+ r = sd_bus_add_match(bus, m, NULL, NULL);
+ if (r < 0) {
+ log_error("Failed to add match: %s", strerror(-r));
+ return r;
+ }
+ }
+
+ STRV_FOREACH(i, arg_matches) {
+ r = sd_bus_add_match(bus, *i, NULL, NULL);
+ if (r < 0) {
+ log_error("Failed to add match: %s", strerror(-r));
+ return r;
+ }
+ }
+
+ for (;;) {
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+
+ r = sd_bus_process(bus, &m);
+ if (r < 0) {
+ log_error("Failed to process bus: %s", strerror(-r));
+ return r;
+ }
+
+ if (m) {
+ bus_message_dump(m);
+ continue;
+ }
+
+ if (r > 0)
+ continue;
+
+ r = sd_bus_wait(bus, (uint64_t) -1);
+ if (r < 0) {
+ log_error("Failed to wait for bus: %s", strerror(-r));
+ return r;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int help(void) {
+
+ printf("%s [OPTIONS...] {COMMAND} ...\n\n"
+ "Introspect the bus.\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --system Connect to system bus\n"
+ " --user Connect to user bus\n"
+ " --address=ADDRESS Connect to bus specified by address\n"
+ " --no-unique Only show well-known names\n"
+ " --match=MATCH Only show matching messages\n"
+ " --no-pager Do not pipe output into a pager\n\n"
+ "Commands:\n"
+ " list List bus names\n"
+ " monitor [SERVICE...] Show bus traffic\n",
+ program_invocation_short_name);
+
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_NO_PAGER,
+ ARG_SYSTEM,
+ ARG_USER,
+ ARG_ADDRESS,
+ ARG_MATCH,
+ ARG_NO_UNIQUE
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "no-pager", no_argument, NULL, ARG_NO_PAGER },
+ { "system", no_argument, NULL, ARG_SYSTEM },
+ { "user", no_argument, NULL, ARG_USER },
+ { "address", required_argument, NULL, ARG_ADDRESS },
+ { "no-unique", no_argument, NULL, ARG_NO_UNIQUE },
+ { "match", required_argument, NULL, ARG_MATCH },
+ { NULL, 0, NULL, 0 },
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
+
+ switch (c) {
+
+ case 'h':
+ return help();
+
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(SYSTEMD_FEATURES);
+ return 0;
+
+ case ARG_NO_PAGER:
+ arg_no_pager = true;
+ break;
+
+ case ARG_USER:
+ arg_user = true;
+ break;
+
+ case ARG_SYSTEM:
+ arg_user = false;
+ break;
+
+ case ARG_ADDRESS:
+ arg_address = optarg;
+ break;
+
+ case ARG_NO_UNIQUE:
+ arg_no_unique = true;
+ break;
+
+ case ARG_MATCH:
+ if (strv_extend(&arg_matches, optarg) < 0)
+ return log_oom();
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ log_error("Unknown option code %c", c);
+ return -EINVAL;
+ }
+ }
+
+ return 1;
+}
+
+static int busctl_main(sd_bus *bus, int argc, char *argv[]) {
+ assert(bus);
+
+ if (optind >= argc ||
+ streq(argv[optind], "list"))
+ return list_bus_names(bus, argv + optind);
+
+ if (streq(argv[optind], "monitor"))
+ return monitor(bus, argv + optind);
+
+ if (streq(argv[optind], "help"))
+ return help();
+
+ log_error("Unknown command '%s'", argv[optind]);
+ return -EINVAL;
+}
+
+int main(int argc, char *argv[]) {
+ _cleanup_bus_unref_ sd_bus *bus = NULL;
+ int r;
+
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto finish;
+
+ if (arg_address) {
+ r = sd_bus_new(&bus);
+ if (r < 0) {
+ log_error("Failed to allocate bus: %s", strerror(-r));
+ goto finish;
+ }
+
+ r = sd_bus_set_address(bus, arg_address);
+ if (r < 0) {
+ log_error("Failed to set address: %s", strerror(-r));
+ goto finish;
+ }
+
+ r = sd_bus_set_bus_client(bus, true);
+ if (r < 0) {
+ log_error("Failed to set bus client: %s", strerror(-r));
+ goto finish;
+ }
+
+ r = sd_bus_start(bus);
+ } else if (arg_user)
+ r = sd_bus_open_user(&bus);
+ else
+ r = sd_bus_open_system(&bus);
+
+ if (r < 0) {
+ log_error("Failed to connect to bus: %s", strerror(-r));
+ goto finish;
+ }
+
+ r = busctl_main(bus, argc, argv);
+
+finish:
+ pager_close();
+ strv_free(arg_matches);
-fail:
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-25 03:55:25 +0000