]> git.ipfire.org Git - thirdparty/systemd.git/blobdiff - src/login/logind-dbus.c
src/basic: rename audit.[ch] → audit-util.[ch] and capability.[ch] → capability-util...
[thirdparty/systemd.git] / src / login / logind-dbus.c
index b0cd85e98562b3abbdce294204430e65ba13c5e8..4204732e7d933f33a90bc39c47239d6a800fc1e2 100644 (file)
 ***/
 
 #include <errno.h>
+#include <pwd.h>
 #include <string.h>
 #include <unistd.h>
-#include <pwd.h>
 
 #include "sd-messages.h"
-#include "strv.h"
-#include "mkdir.h"
-#include "path-util.h"
-#include "special.h"
-#include "sleep-config.h"
-#include "fileio-label.h"
-#include "unit-name.h"
-#include "audit.h"
-#include "bus-util.h"
-#include "bus-error.h"
+
+#include "audit-util.h"
 #include "bus-common-errors.h"
-#include "udev-util.h"
-#include "selinux-util.h"
+#include "bus-error.h"
+#include "bus-util.h"
+#include "dirent-util.h"
 #include "efivars.h"
-#include "logind.h"
+#include "escape.h"
+#include "fd-util.h"
+#include "fileio-label.h"
 #include "formats-util.h"
+#include "fs-util.h"
+#include "logind.h"
+#include "mkdir.h"
+#include "path-util.h"
 #include "process-util.h"
+#include "selinux-util.h"
+#include "sleep-config.h"
+#include "special.h"
+#include "strv.h"
 #include "terminal-util.h"
+#include "udev-util.h"
+#include "unit-name.h"
+#include "user-util.h"
 #include "utmp-wtmp.h"
 
 int manager_get_session_from_creds(Manager *m, sd_bus_message *message, const char *name, sd_bus_error *error, Session **ret) {
@@ -942,6 +948,7 @@ static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_
                         message,
                         CAP_SYS_ADMIN,
                         "org.freedesktop.login1.lock-sessions",
+                        NULL,
                         false,
                         UID_INVALID,
                         &m->polkit_registry,
@@ -1096,6 +1103,7 @@ static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bu
                         message,
                         CAP_SYS_ADMIN,
                         "org.freedesktop.login1.set-user-linger",
+                        NULL,
                         interactive,
                         UID_INVALID,
                         &m->polkit_registry,
@@ -1268,6 +1276,7 @@ static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_
                         message,
                         CAP_SYS_ADMIN,
                         "org.freedesktop.login1.attach-device",
+                        NULL,
                         interactive,
                         UID_INVALID,
                         &m->polkit_registry,
@@ -1299,6 +1308,7 @@ static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_
                         message,
                         CAP_SYS_ADMIN,
                         "org.freedesktop.login1.flush-devices",
+                        NULL,
                         interactive,
                         UID_INVALID,
                         &m->polkit_registry,
@@ -1348,22 +1358,27 @@ static int bus_manager_log_shutdown(
                 return 0;
 
         if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
-                p = "MESSAGE=System is powering down.";
+                p = "MESSAGE=System is powering down";
                 q = "SHUTDOWN=power-off";
         } else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
-                p = "MESSAGE=System is halting.";
+                p = "MESSAGE=System is halting";
                 q = "SHUTDOWN=halt";
         } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
-                p = "MESSAGE=System is rebooting.";
+                p = "MESSAGE=System is rebooting";
                 q = "SHUTDOWN=reboot";
         } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
-                p = "MESSAGE=System is rebooting with kexec.";
+                p = "MESSAGE=System is rebooting with kexec";
                 q = "SHUTDOWN=kexec";
         } else {
-                p = "MESSAGE=System is shutting down.";
+                p = "MESSAGE=System is shutting down";
                 q = NULL;
         }
 
+        if (isempty(m->wall_message))
+                p = strjoina(p, ".");
+        else
+                p = strjoina(p, " (", m->wall_message, ").");
+
         return log_struct(LOG_NOTICE,
                           LOG_MESSAGE_ID(SD_MESSAGE_SHUTDOWN),
                           p,
@@ -1416,6 +1431,20 @@ int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
         return r;
 }
 
+static void reset_scheduled_shutdown(Manager *m) {
+        m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
+        m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
+        m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
+        m->scheduled_shutdown_type = mfree(m->scheduled_shutdown_type);
+        m->scheduled_shutdown_timeout = 0;
+        m->shutdown_dry_run = false;
+
+        if (m->unlink_nologin) {
+                (void) unlink("/run/nologin");
+                m->unlink_nologin = false;
+        }
+}
+
 static int execute_shutdown_or_sleep(
                 Manager *m,
                 InhibitWhat w,
@@ -1423,8 +1452,8 @@ static int execute_shutdown_or_sleep(
                 sd_bus_error *error) {
 
         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+        char *c = NULL;
         const char *p;
-        char *c;
         int r;
 
         assert(m);
@@ -1434,25 +1463,30 @@ static int execute_shutdown_or_sleep(
 
         bus_manager_log_shutdown(m, w, unit_name);
 
-        r = sd_bus_call_method(
-                        m->bus,
-                        "org.freedesktop.systemd1",
-                        "/org/freedesktop/systemd1",
-                        "org.freedesktop.systemd1.Manager",
-                        "StartUnit",
-                        error,
-                        &reply,
-                        "ss", unit_name, "replace-irreversibly");
-        if (r < 0)
-                return r;
+        if (m->shutdown_dry_run) {
+                log_info("Running in dry run, suppressing action.");
+                reset_scheduled_shutdown(m);
+        } else {
+                r = sd_bus_call_method(
+                                m->bus,
+                                "org.freedesktop.systemd1",
+                                "/org/freedesktop/systemd1",
+                                "org.freedesktop.systemd1.Manager",
+                                "StartUnit",
+                                error,
+                                &reply,
+                                "ss", unit_name, "replace-irreversibly");
+                if (r < 0)
+                        return r;
 
-        r = sd_bus_message_read(reply, "o", &p);
-        if (r < 0)
-                return r;
+                r = sd_bus_message_read(reply, "o", &p);
+                if (r < 0)
+                        return r;
 
-        c = strdup(p);
-        if (!c)
-                return -ENOMEM;
+                c = strdup(p);
+                if (!c)
+                        return -ENOMEM;
+        }
 
         m->action_unit = unit_name;
         free(m->action_job);
@@ -1646,7 +1680,7 @@ static int verify_shutdown_creds(
         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
 
         if (multiple_sessions && action_multiple_sessions) {
-                r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_multiple_sessions, interactive, UID_INVALID, &m->polkit_registry, error);
+                r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
                 if (r < 0)
                         return r;
                 if (r == 0)
@@ -1654,7 +1688,7 @@ static int verify_shutdown_creds(
         }
 
         if (blocked && action_ignore_inhibit) {
-                r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_ignore_inhibit, interactive, UID_INVALID, &m->polkit_registry, error);
+                r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
                 if (r < 0)
                         return r;
                 if (r == 0)
@@ -1662,7 +1696,7 @@ static int verify_shutdown_creds(
         }
 
         if (!multiple_sessions && !blocked && action) {
-                r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action, interactive, UID_INVALID, &m->polkit_registry, error);
+                r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
                 if (r < 0)
                         return r;
                 if (r == 0)
@@ -1782,10 +1816,9 @@ static int nologin_timeout_handler(
 }
 
 static int update_schedule_file(Manager *m) {
-
-        int r;
+        _cleanup_free_ char *temp_path = NULL;
         _cleanup_fclose_ FILE *f = NULL;
-        _cleanup_free_ char *t = NULL, *temp_path = NULL;
+        int r;
 
         assert(m);
 
@@ -1793,10 +1826,6 @@ static int update_schedule_file(Manager *m) {
         if (r < 0)
                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
 
-        t = cescape(m->wall_message);
-        if (!t)
-                return log_oom();
-
         r = fopen_temporary("/run/systemd/shutdown/scheduled", &f, &temp_path);
         if (r < 0)
                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
@@ -1811,8 +1840,17 @@ static int update_schedule_file(Manager *m) {
                 m->enable_wall_messages,
                 m->scheduled_shutdown_type);
 
-        if (!isempty(m->wall_message))
+        if (!isempty(m->wall_message)) {
+                _cleanup_free_ char *t;
+
+                t = cescape(m->wall_message);
+                if (!t) {
+                        r = -ENOMEM;
+                        goto fail;
+                }
+
                 fprintf(f, "WALL_MESSAGE=%s\n", t);
+        }
 
         r = fflush_and_check(f);
         if (r < 0)
@@ -1878,6 +1916,11 @@ static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_
         if (r < 0)
                 return r;
 
+        if (startswith(type, "dry-")) {
+                type += 4;
+                m->shutdown_dry_run = true;
+        }
+
         if (streq(type, "reboot")) {
                 action = "org.freedesktop.login1.reboot";
                 action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions";
@@ -1972,18 +2015,7 @@ static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userd
         assert(message);
 
         cancelled = m->scheduled_shutdown_type != NULL;
-
-        m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
-        m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
-        m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
-        free(m->scheduled_shutdown_type);
-        m->scheduled_shutdown_type = NULL;
-        m->scheduled_shutdown_timeout = 0;
-
-        if (m->unlink_nologin) {
-                (void) unlink("/run/nologin");
-                m->unlink_nologin = false;
-        }
+        reset_scheduled_shutdown(m);
 
         if (cancelled) {
                 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
@@ -1998,7 +2030,7 @@ static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userd
                 }
 
                 utmp_wall("The system shutdown has been cancelled",
-                          lookup_uid(uid), tty, logind_wall_tty_filter, m);
+                          uid_to_name(uid), tty, logind_wall_tty_filter, m);
         }
 
         return sd_bus_reply_method_return(message, "b", cancelled);
@@ -2080,7 +2112,7 @@ static int method_can_shutdown_or_sleep(
         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
 
         if (multiple_sessions) {
-                r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, UID_INVALID, &challenge, error);
+                r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, UID_INVALID, &challenge, error);
                 if (r < 0)
                         return r;
 
@@ -2093,7 +2125,7 @@ static int method_can_shutdown_or_sleep(
         }
 
         if (blocked) {
-                r = bus_test_polkit(message, CAP_SYS_BOOT, action_ignore_inhibit, UID_INVALID, &challenge, error);
+                r = bus_test_polkit(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, UID_INVALID, &challenge, error);
                 if (r < 0)
                         return r;
 
@@ -2109,7 +2141,7 @@ static int method_can_shutdown_or_sleep(
                 /* If neither inhibit nor multiple sessions
                  * apply then just check the normal policy */
 
-                r = bus_test_polkit(message, CAP_SYS_BOOT, action, UID_INVALID, &challenge, error);
+                r = bus_test_polkit(message, CAP_SYS_BOOT, action, NULL, UID_INVALID, &challenge, error);
                 if (r < 0)
                         return r;
 
@@ -2228,6 +2260,7 @@ static int method_set_reboot_to_firmware_setup(
         r = bus_verify_polkit_async(message,
                                     CAP_SYS_ADMIN,
                                     "org.freedesktop.login1.set-reboot-to-firmware-setup",
+                                    NULL,
                                     false,
                                     UID_INVALID,
                                     &m->polkit_registry,
@@ -2266,6 +2299,7 @@ static int method_can_reboot_to_firmware_setup(
         r = bus_test_polkit(message,
                             CAP_SYS_ADMIN,
                             "org.freedesktop.login1.set-reboot-to-firmware-setup",
+                            NULL,
                             UID_INVALID,
                             &challenge,
                             error);
@@ -2282,6 +2316,49 @@ static int method_can_reboot_to_firmware_setup(
         return sd_bus_reply_method_return(message, "s", result);
 }
 
+static int method_set_wall_message(
+                sd_bus_message *message,
+                void *userdata,
+                sd_bus_error *error) {
+
+        int r;
+        Manager *m = userdata;
+        char *wall_message;
+        int enable_wall_messages;
+
+        assert(message);
+        assert(m);
+
+        r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
+        if (r < 0)
+                return r;
+
+        r = bus_verify_polkit_async(message,
+                                    CAP_SYS_ADMIN,
+                                    "org.freedesktop.login1.set-wall-message",
+                                    NULL,
+                                    false,
+                                    UID_INVALID,
+                                    &m->polkit_registry,
+                                    error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
+        if (isempty(wall_message))
+                m->wall_message = mfree(m->wall_message);
+        else {
+                r = free_and_strdup(&m->wall_message, wall_message);
+                if (r < 0)
+                        return log_oom();
+        }
+
+        m->enable_wall_messages = enable_wall_messages;
+
+        return sd_bus_reply_method_return(message, NULL);
+}
+
 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
         _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
         const char *who, *why, *what, *mode;
@@ -2331,6 +2408,7 @@ static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error
                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
+                        NULL,
                         false,
                         UID_INVALID,
                         &m->polkit_registry,
@@ -2463,6 +2541,7 @@ const sd_bus_vtable manager_vtable[] = {
         SD_BUS_METHOD("Inhibit", "ssss", "h", method_inhibit, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("CanRebootToFirmwareSetup", NULL, "s", method_can_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("SetRebootToFirmwareSetup", "b", NULL, method_set_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("SetWallMessage", "sb", NULL, method_set_wall_message, SD_BUS_VTABLE_UNPRIVILEGED),
 
         SD_BUS_SIGNAL("SessionNew", "so", 0),
         SD_BUS_SIGNAL("SessionRemoved", "so", 0),
@@ -2511,17 +2590,16 @@ int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *err
         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
         if (r < 0) {
                 bus_log_parse_error(r);
-                return r;
+                return 0;
         }
 
         if (m->action_job && streq(m->action_job, path)) {
-                log_info("Operation finished.");
+                log_info("Operation '%s' finished.", inhibit_what_to_string(m->action_what));
 
                 /* Tell people that they now may take a lock again */
                 send_prepare_for(m, m->action_what, false);
 
-                free(m->action_job);
-                m->action_job = NULL;
+                m->action_job = mfree(m->action_job);
                 m->action_unit = NULL;
                 m->action_what = 0;
                 return 0;
@@ -2530,10 +2608,8 @@ int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *err
         session = hashmap_get(m->session_units, unit);
         if (session) {
 
-                if (streq_ptr(path, session->scope_job)) {
-                        free(session->scope_job);
-                        session->scope_job = NULL;
-                }
+                if (streq_ptr(path, session->scope_job))
+                        session->scope_job = mfree(session->scope_job);
 
                 session_jobs_reply(session, unit, result);
 
@@ -2545,19 +2621,14 @@ int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *err
         user = hashmap_get(m->user_units, unit);
         if (user) {
 
-                if (streq_ptr(path, user->service_job)) {
-                        free(user->service_job);
-                        user->service_job = NULL;
-                }
+                if (streq_ptr(path, user->service_job))
+                        user->service_job = mfree(user->service_job);
 
-                if (streq_ptr(path, user->slice_job)) {
-                        free(user->slice_job);
-                        user->slice_job = NULL;
-                }
+                if (streq_ptr(path, user->slice_job))
+                        user->slice_job = mfree(user->slice_job);
 
-                LIST_FOREACH(sessions_by_user, session, user->sessions) {
+                LIST_FOREACH(sessions_by_user, session, user->sessions)
                         session_jobs_reply(session, unit, result);
-                }
 
                 user_save(user);
                 user_add_to_gc_queue(user);
@@ -2579,7 +2650,7 @@ int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *er
         r = sd_bus_message_read(message, "so", &unit, &path);
         if (r < 0) {
                 bus_log_parse_error(r);
-                return r;
+                return 0;
         }
 
         session = hashmap_get(m->session_units, unit);
@@ -2611,8 +2682,10 @@ int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_err
         r = unit_name_from_dbus_path(path, &unit);
         if (r == -EINVAL) /* not a unit */
                 return 0;
-        if (r < 0)
-                return r;
+        if (r < 0) {
+                log_oom();
+                return 0;
+        }
 
         session = hashmap_get(m->session_units, unit);
         if (session)
@@ -2637,7 +2710,7 @@ int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error
         r = sd_bus_message_read(message, "b", &b);
         if (r < 0) {
                 bus_log_parse_error(r);
-                return r;
+                return 0;
         }
 
         if (b)
@@ -2652,41 +2725,6 @@ int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error
         return 0;
 }
 
-int match_name_owner_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
-        const char *name, *old, *new;
-        Manager *m = userdata;
-        Session *session;
-        Iterator i;
-        int r;
-        char *key;
-
-        assert(message);
-        assert(m);
-
-        r = sd_bus_message_read(message, "sss", &name, &old, &new);
-        if (r < 0) {
-                bus_log_parse_error(r);
-                return r;
-        }
-
-        if (isempty(old) || !isempty(new))
-                return 0;
-
-        key = set_remove(m->busnames, (char*) old);
-        if (!key)
-                return 0;
-
-        /* Drop all controllers owned by this name */
-
-        free(key);
-
-        HASHMAP_FOREACH(session, m->sessions, i)
-                if (session_is_controller(session, old))
-                        session_drop_controller(session);
-
-        return 0;
-}
-
 int manager_send_changed(Manager *manager, const char *property, ...) {
         char **l;