diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/login/loginctl.c | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/login/loginctl.c | 1474 |
1 files changed, 1474 insertions, 0 deletions
diff --git a/src/login/loginctl.c b/src/login/loginctl.c new file mode 100644 index 0000000..4dbfa0d --- /dev/null +++ b/src/login/loginctl.c @@ -0,0 +1,1474 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <errno.h> +#include <getopt.h> +#include <locale.h> +#include <unistd.h> + +#include "sd-bus.h" + +#include "alloc-util.h" +#include "bus-error.h" +#include "bus-locator.h" +#include "bus-map-properties.h" +#include "bus-print-properties.h" +#include "bus-unit-procs.h" +#include "cgroup-show.h" +#include "cgroup-util.h" +#include "format-table.h" +#include "log.h" +#include "logs-show.h" +#include "macro.h" +#include "main-func.h" +#include "memory-util.h" +#include "pager.h" +#include "parse-argument.h" +#include "parse-util.h" +#include "pretty-print.h" +#include "process-util.h" +#include "rlimit-util.h" +#include "sigbus.h" +#include "signal-util.h" +#include "spawn-polkit-agent.h" +#include "string-table.h" +#include "strv.h" +#include "sysfs-show.h" +#include "terminal-util.h" +#include "unit-name.h" +#include "user-util.h" +#include "verbs.h" + +static char **arg_property = NULL; +static BusPrintPropertyFlags arg_print_flags = 0; +static bool arg_full = false; +static PagerFlags arg_pager_flags = 0; +static bool arg_legend = true; +static const char *arg_kill_whom = NULL; +static int arg_signal = SIGTERM; +static BusTransport arg_transport = BUS_TRANSPORT_LOCAL; +static char *arg_host = NULL; +static bool arg_ask_password = true; +static unsigned arg_lines = 10; +static OutputMode arg_output = OUTPUT_SHORT; + +STATIC_DESTRUCTOR_REGISTER(arg_property, strv_freep); + +static OutputFlags get_output_flags(void) { + + return + FLAGS_SET(arg_print_flags, BUS_PRINT_PROPERTY_SHOW_EMPTY) * OUTPUT_SHOW_ALL | + (arg_full || !on_tty() || pager_have()) * OUTPUT_FULL_WIDTH | + colors_enabled() * OUTPUT_COLOR; +} + +static int get_session_path(sd_bus *bus, const char *session_id, sd_bus_error *error, char **path) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + int r; + char *ans; + + r = bus_call_method(bus, bus_login_mgr, "GetSession", error, &reply, "s", session_id); + if (r < 0) + return r; + + r = sd_bus_message_read(reply, "o", &ans); + if (r < 0) + return r; + + ans = strdup(ans); + if (!ans) + return -ENOMEM; + + *path = ans; + return 0; +} + +static int show_table(Table *table, const char *word) { + int r; + + assert(table); + assert(word); + + if (table_get_rows(table) > 1 || OUTPUT_MODE_IS_JSON(arg_output)) { + r = table_set_sort(table, (size_t) 0); + if (r < 0) + return table_log_sort_error(r); + + table_set_header(table, arg_legend); + + if (OUTPUT_MODE_IS_JSON(arg_output)) + r = table_print_json(table, NULL, output_mode_to_json_format_flags(arg_output) | JSON_FORMAT_COLOR_AUTO); + else + r = table_print(table, NULL); + if (r < 0) + return table_log_print_error(r); + } + + if (arg_legend) { + if (table_get_rows(table) > 1) + printf("\n%zu %s listed.\n", table_get_rows(table) - 1, word); + else + printf("No %s.\n", word); + } + + return 0; +} + +static int list_sessions(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(table_unrefp) Table *table = NULL; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + pager_open(arg_pager_flags); + + r = bus_call_method(bus, bus_login_mgr, "ListSessions", &error, &reply, NULL); + if (r < 0) + return log_error_errno(r, "Failed to list sessions: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, 'a', "(susso)"); + if (r < 0) + return bus_log_parse_error(r); + + table = table_new("session", "uid", "user", "seat", "tty"); + if (!table) + return log_oom(); + + /* Right-align the first two fields (since they are numeric) */ + (void) table_set_align_percent(table, TABLE_HEADER_CELL(0), 100); + (void) table_set_align_percent(table, TABLE_HEADER_CELL(1), 100); + + for (;;) { + _cleanup_(sd_bus_error_free) sd_bus_error error_tty = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply_tty = NULL; + const char *id, *user, *seat, *object, *tty = NULL; + uint32_t uid; + + r = sd_bus_message_read(reply, "(susso)", &id, &uid, &user, &seat, &object); + if (r < 0) + return bus_log_parse_error(r); + if (r == 0) + break; + + r = sd_bus_get_property( + bus, + "org.freedesktop.login1", + object, + "org.freedesktop.login1.Session", + "TTY", + &error_tty, + &reply_tty, + "s"); + if (r < 0) + log_warning_errno(r, "Failed to get TTY for session %s: %s", id, bus_error_message(&error_tty, r)); + else { + r = sd_bus_message_read(reply_tty, "s", &tty); + if (r < 0) + return bus_log_parse_error(r); + } + + r = table_add_many(table, + TABLE_STRING, id, + TABLE_UID, (uid_t) uid, + TABLE_STRING, user, + TABLE_STRING, seat, + TABLE_STRING, strna(tty)); + if (r < 0) + return table_log_add_error(r); + } + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + return show_table(table, "sessions"); +} + +static int list_users(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(table_unrefp) Table *table = NULL; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + pager_open(arg_pager_flags); + + r = bus_call_method(bus, bus_login_mgr, "ListUsers", &error, &reply, NULL); + if (r < 0) + return log_error_errno(r, "Failed to list users: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, 'a', "(uso)"); + if (r < 0) + return bus_log_parse_error(r); + + table = table_new("uid", "user", "linger"); + if (!table) + return log_oom(); + + (void) table_set_align_percent(table, TABLE_HEADER_CELL(0), 100); + + for (;;) { + const char *user, *object; + uint32_t uid; + int linger; + + r = sd_bus_message_read(reply, "(uso)", &uid, &user, &object); + if (r < 0) + return bus_log_parse_error(r); + if (r == 0) + break; + + r = sd_bus_get_property_trivial(bus, + "org.freedesktop.login1", + object, + "org.freedesktop.login1.User", + "Linger", + &error, + 'b', + &linger); + if (r < 0) + return log_error_errno(r, "Failed to get linger status: %s", bus_error_message(&error, r)); + + r = table_add_many(table, + TABLE_UID, (uid_t) uid, + TABLE_STRING, user, + TABLE_BOOLEAN, linger); + if (r < 0) + return table_log_add_error(r); + } + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + return show_table(table, "users"); +} + +static int list_seats(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(table_unrefp) Table *table = NULL; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + pager_open(arg_pager_flags); + + r = bus_call_method(bus, bus_login_mgr, "ListSeats", &error, &reply, NULL); + if (r < 0) + return log_error_errno(r, "Failed to list seats: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, 'a', "(so)"); + if (r < 0) + return bus_log_parse_error(r); + + table = table_new("seat"); + if (!table) + return log_oom(); + + for (;;) { + const char *seat; + + r = sd_bus_message_read(reply, "(so)", &seat, NULL); + if (r < 0) + return bus_log_parse_error(r); + if (r == 0) + break; + + r = table_add_cell(table, NULL, TABLE_STRING, seat); + if (r < 0) + return table_log_add_error(r); + } + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + return show_table(table, "seats"); +} + +static int show_unit_cgroup(sd_bus *bus, const char *interface, const char *unit, pid_t leader) { + _cleanup_free_ char *cgroup = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + unsigned c; + int r; + + assert(bus); + assert(unit); + + r = show_cgroup_get_unit_path_and_warn(bus, unit, &cgroup); + if (r < 0) + return r; + + if (isempty(cgroup)) + return 0; + + c = columns(); + if (c > 18) + c -= 18; + else + c = 0; + + r = unit_show_processes(bus, unit, cgroup, "\t\t ", c, get_output_flags(), &error); + if (r == -EBADR) { + + if (arg_transport == BUS_TRANSPORT_REMOTE) + return 0; + + /* Fallback for older systemd versions where the GetUnitProcesses() call is not yet available */ + + if (cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, cgroup) != 0 && leader <= 0) + return 0; + + show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, cgroup, "\t\t ", c, &leader, leader > 0, get_output_flags()); + } else if (r < 0) + return log_error_errno(r, "Failed to dump process list: %s", bus_error_message(&error, r)); + + return 0; +} + +typedef struct SessionStatusInfo { + const char *id; + uid_t uid; + const char *name; + struct dual_timestamp timestamp; + unsigned vtnr; + const char *seat; + const char *tty; + const char *display; + bool remote; + const char *remote_host; + const char *remote_user; + const char *service; + pid_t leader; + const char *type; + const char *class; + const char *state; + const char *scope; + const char *desktop; +} SessionStatusInfo; + +typedef struct UserStatusInfo { + uid_t uid; + bool linger; + const char *name; + struct dual_timestamp timestamp; + const char *state; + char **sessions; + const char *display; + const char *slice; +} UserStatusInfo; + +typedef struct SeatStatusInfo { + const char *id; + const char *active_session; + char **sessions; +} SeatStatusInfo; + +static void user_status_info_clear(UserStatusInfo *info) { + if (info) { + strv_free(info->sessions); + zero(*info); + } +} + +static void seat_status_info_clear(SeatStatusInfo *info) { + if (info) { + strv_free(info->sessions); + zero(*info); + } +} + +static int prop_map_first_of_struct(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { + const char *contents; + int r; + + r = sd_bus_message_peek_type(m, NULL, &contents); + if (r < 0) + return r; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, contents); + if (r < 0) + return r; + + r = sd_bus_message_read_basic(m, contents[0], userdata); + if (r < 0) + return r; + + r = sd_bus_message_skip(m, contents+1); + if (r < 0) + return r; + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + + return 0; +} + +static int prop_map_sessions_strv(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { + const char *name; + int r; + + assert(bus); + assert(m); + + r = sd_bus_message_enter_container(m, 'a', "(so)"); + if (r < 0) + return r; + + while ((r = sd_bus_message_read(m, "(so)", &name, NULL)) > 0) { + r = strv_extend(userdata, name); + if (r < 0) + return r; + } + if (r < 0) + return r; + + return sd_bus_message_exit_container(m); +} + +static int print_session_status_info(sd_bus *bus, const char *path, bool *new_line) { + + static const struct bus_properties_map map[] = { + { "Id", "s", NULL, offsetof(SessionStatusInfo, id) }, + { "Name", "s", NULL, offsetof(SessionStatusInfo, name) }, + { "TTY", "s", NULL, offsetof(SessionStatusInfo, tty) }, + { "Display", "s", NULL, offsetof(SessionStatusInfo, display) }, + { "RemoteHost", "s", NULL, offsetof(SessionStatusInfo, remote_host) }, + { "RemoteUser", "s", NULL, offsetof(SessionStatusInfo, remote_user) }, + { "Service", "s", NULL, offsetof(SessionStatusInfo, service) }, + { "Desktop", "s", NULL, offsetof(SessionStatusInfo, desktop) }, + { "Type", "s", NULL, offsetof(SessionStatusInfo, type) }, + { "Class", "s", NULL, offsetof(SessionStatusInfo, class) }, + { "Scope", "s", NULL, offsetof(SessionStatusInfo, scope) }, + { "State", "s", NULL, offsetof(SessionStatusInfo, state) }, + { "VTNr", "u", NULL, offsetof(SessionStatusInfo, vtnr) }, + { "Leader", "u", NULL, offsetof(SessionStatusInfo, leader) }, + { "Remote", "b", NULL, offsetof(SessionStatusInfo, remote) }, + { "Timestamp", "t", NULL, offsetof(SessionStatusInfo, timestamp.realtime) }, + { "TimestampMonotonic", "t", NULL, offsetof(SessionStatusInfo, timestamp.monotonic) }, + { "User", "(uo)", prop_map_first_of_struct, offsetof(SessionStatusInfo, uid) }, + { "Seat", "(so)", prop_map_first_of_struct, offsetof(SessionStatusInfo, seat) }, + {} + }; + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + SessionStatusInfo i = {}; + int r; + + r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, BUS_MAP_BOOLEAN_AS_BOOL, &error, &m, &i); + if (r < 0) + return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r)); + + if (*new_line) + printf("\n"); + + *new_line = true; + + printf("%s - ", strna(i.id)); + + if (i.name) + printf("%s (" UID_FMT ")\n", i.name, i.uid); + else + printf(UID_FMT "\n", i.uid); + + if (timestamp_is_set(i.timestamp.realtime)) + printf("\t Since: %s; %s\n", + FORMAT_TIMESTAMP(i.timestamp.realtime), + FORMAT_TIMESTAMP_RELATIVE(i.timestamp.realtime)); + + if (i.leader > 0) { + _cleanup_free_ char *t = NULL; + + printf("\t Leader: " PID_FMT, i.leader); + + (void) get_process_comm(i.leader, &t); + if (t) + printf(" (%s)", t); + + printf("\n"); + } + + if (!isempty(i.seat)) { + printf("\t Seat: %s", i.seat); + + if (i.vtnr > 0) + printf("; vc%u", i.vtnr); + + printf("\n"); + } + + if (i.tty) + printf("\t TTY: %s\n", i.tty); + else if (i.display) + printf("\t Display: %s\n", i.display); + + if (i.remote_host && i.remote_user) + printf("\t Remote: %s@%s\n", i.remote_user, i.remote_host); + else if (i.remote_host) + printf("\t Remote: %s\n", i.remote_host); + else if (i.remote_user) + printf("\t Remote: user %s\n", i.remote_user); + else if (i.remote) + printf("\t Remote: Yes\n"); + + if (i.service) { + printf("\t Service: %s", i.service); + + if (i.type) + printf("; type %s", i.type); + + if (i.class) + printf("; class %s", i.class); + + printf("\n"); + } else if (i.type) { + printf("\t Type: %s", i.type); + + if (i.class) + printf("; class %s", i.class); + + printf("\n"); + } else if (i.class) + printf("\t Class: %s\n", i.class); + + if (!isempty(i.desktop)) + printf("\t Desktop: %s\n", i.desktop); + + if (i.state) + printf("\t State: %s\n", i.state); + + if (i.scope) { + printf("\t Unit: %s\n", i.scope); + show_unit_cgroup(bus, "org.freedesktop.systemd1.Scope", i.scope, i.leader); + + if (arg_transport == BUS_TRANSPORT_LOCAL) + show_journal_by_unit( + stdout, + i.scope, + NULL, + arg_output, + 0, + i.timestamp.monotonic, + arg_lines, + 0, + get_output_flags() | OUTPUT_BEGIN_NEWLINE, + SD_JOURNAL_LOCAL_ONLY, + true, + NULL); + } + + return 0; +} + +static int print_user_status_info(sd_bus *bus, const char *path, bool *new_line) { + + static const struct bus_properties_map map[] = { + { "Name", "s", NULL, offsetof(UserStatusInfo, name) }, + { "Linger", "b", NULL, offsetof(UserStatusInfo, linger) }, + { "Slice", "s", NULL, offsetof(UserStatusInfo, slice) }, + { "State", "s", NULL, offsetof(UserStatusInfo, state) }, + { "UID", "u", NULL, offsetof(UserStatusInfo, uid) }, + { "Timestamp", "t", NULL, offsetof(UserStatusInfo, timestamp.realtime) }, + { "TimestampMonotonic", "t", NULL, offsetof(UserStatusInfo, timestamp.monotonic) }, + { "Display", "(so)", prop_map_first_of_struct, offsetof(UserStatusInfo, display) }, + { "Sessions", "a(so)", prop_map_sessions_strv, offsetof(UserStatusInfo, sessions) }, + {} + }; + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + _cleanup_(user_status_info_clear) UserStatusInfo i = {}; + int r; + + r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, BUS_MAP_BOOLEAN_AS_BOOL, &error, &m, &i); + if (r < 0) + return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r)); + + if (*new_line) + printf("\n"); + + *new_line = true; + + if (i.name) + printf("%s (%"PRIu32")\n", i.name, i.uid); + else + printf("%"PRIu32"\n", i.uid); + + if (timestamp_is_set(i.timestamp.realtime)) + printf("\t Since: %s; %s\n", + FORMAT_TIMESTAMP(i.timestamp.realtime), + FORMAT_TIMESTAMP_RELATIVE(i.timestamp.realtime)); + + if (!isempty(i.state)) + printf("\t State: %s\n", i.state); + + if (!strv_isempty(i.sessions)) { + printf("\tSessions:"); + + STRV_FOREACH(l, i.sessions) + printf(" %s%s", + streq_ptr(*l, i.display) ? "*" : "", + *l); + + printf("\n"); + } + + printf("\t Linger: %s\n", yes_no(i.linger)); + + if (i.slice) { + printf("\t Unit: %s\n", i.slice); + show_unit_cgroup(bus, "org.freedesktop.systemd1.Slice", i.slice, 0); + + show_journal_by_unit( + stdout, + i.slice, + NULL, + arg_output, + 0, + i.timestamp.monotonic, + arg_lines, + 0, + get_output_flags() | OUTPUT_BEGIN_NEWLINE, + SD_JOURNAL_LOCAL_ONLY, + true, + NULL); + } + + return 0; +} + +static int print_seat_status_info(sd_bus *bus, const char *path, bool *new_line) { + + static const struct bus_properties_map map[] = { + { "Id", "s", NULL, offsetof(SeatStatusInfo, id) }, + { "ActiveSession", "(so)", prop_map_first_of_struct, offsetof(SeatStatusInfo, active_session) }, + { "Sessions", "a(so)", prop_map_sessions_strv, offsetof(SeatStatusInfo, sessions) }, + {} + }; + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + _cleanup_(seat_status_info_clear) SeatStatusInfo i = {}; + int r; + + r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, 0, &error, &m, &i); + if (r < 0) + return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r)); + + if (*new_line) + printf("\n"); + + *new_line = true; + + printf("%s\n", strna(i.id)); + + if (!strv_isempty(i.sessions)) { + printf("\tSessions:"); + + STRV_FOREACH(l, i.sessions) { + if (streq_ptr(*l, i.active_session)) + printf(" *%s", *l); + else + printf(" %s", *l); + } + + printf("\n"); + } + + if (arg_transport == BUS_TRANSPORT_LOCAL) { + unsigned c; + + c = columns(); + if (c > 21) + c -= 21; + else + c = 0; + + printf("\t Devices:\n"); + + show_sysfs(i.id, "\t\t ", c, get_output_flags()); + } + + return 0; +} + +static int print_property(const char *name, const char *expected_value, sd_bus_message *m, BusPrintPropertyFlags flags) { + char type; + const char *contents; + int r; + + assert(name); + assert(m); + + r = sd_bus_message_peek_type(m, &type, &contents); + if (r < 0) + return r; + + switch (type) { + + case SD_BUS_TYPE_STRUCT: + + if (contents[0] == SD_BUS_TYPE_STRING && STR_IN_SET(name, "Display", "Seat", "ActiveSession")) { + const char *s; + + r = sd_bus_message_read(m, "(so)", &s, NULL); + if (r < 0) + return bus_log_parse_error(r); + + bus_print_property_value(name, expected_value, flags, s); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_UINT32 && streq(name, "User")) { + uint32_t uid; + + r = sd_bus_message_read(m, "(uo)", &uid, NULL); + if (r < 0) + return bus_log_parse_error(r); + + if (!uid_is_valid(uid)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Invalid user ID: " UID_FMT, + uid); + + bus_print_property_valuef(name, expected_value, flags, UID_FMT, uid); + return 1; + } + break; + + case SD_BUS_TYPE_ARRAY: + + if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Sessions")) { + const char *s; + bool space = false; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(so)"); + if (r < 0) + return bus_log_parse_error(r); + + if (!FLAGS_SET(flags, BUS_PRINT_PROPERTY_ONLY_VALUE)) + printf("%s=", name); + + while ((r = sd_bus_message_read(m, "(so)", &s, NULL)) > 0) { + printf("%s%s", space ? " " : "", s); + space = true; + } + + if (space || !FLAGS_SET(flags, BUS_PRINT_PROPERTY_ONLY_VALUE)) + printf("\n"); + + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; + } + break; + } + + return 0; +} + +static int show_properties(sd_bus *bus, const char *path, bool *new_line) { + int r; + + assert(bus); + assert(path); + assert(new_line); + + if (*new_line) + printf("\n"); + + *new_line = true; + + r = bus_print_all_properties( + bus, + "org.freedesktop.login1", + path, + print_property, + arg_property, + arg_print_flags, + NULL); + if (r < 0) + return bus_log_parse_error(r); + + return 0; +} + +static int show_session(int argc, char *argv[], void *userdata) { + bool properties, new_line = false; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *path = NULL; + + assert(argv); + + properties = !strstr(argv[0], "status"); + + pager_open(arg_pager_flags); + + if (argc <= 1) { + /* If no argument is specified inspect the manager itself */ + if (properties) + return show_properties(bus, "/org/freedesktop/login1", &new_line); + + return print_session_status_info(bus, "/org/freedesktop/login1/session/auto", &new_line); + } + + for (int i = 1; i < argc; i++) { + r = get_session_path(bus, argv[i], &error, &path); + if (r < 0) + return log_error_errno(r, "Failed to get session path: %s", bus_error_message(&error, r)); + + if (properties) + r = show_properties(bus, path, &new_line); + else + r = print_session_status_info(bus, path, &new_line); + + if (r < 0) + return r; + } + + return 0; +} + +static int show_user(int argc, char *argv[], void *userdata) { + bool properties, new_line = false; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + properties = !strstr(argv[0], "status"); + + pager_open(arg_pager_flags); + + if (argc <= 1) { + /* If no argument is specified inspect the manager itself */ + if (properties) + return show_properties(bus, "/org/freedesktop/login1", &new_line); + + return print_user_status_info(bus, "/org/freedesktop/login1/user/self", &new_line); + } + + for (int i = 1; i < argc; i++) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message * reply = NULL; + const char *path = NULL; + uid_t uid; + + r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL, 0); + if (r < 0) + return log_error_errno(r, "Failed to look up user %s: %m", argv[i]); + + r = sd_bus_call_method( + bus, + "org.freedesktop.login1", + "/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + "GetUser", + &error, &reply, + "u", (uint32_t) uid); + if (r < 0) + return log_error_errno(r, "Failed to get user: %s", bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "o", &path); + if (r < 0) + return bus_log_parse_error(r); + + if (properties) + r = show_properties(bus, path, &new_line); + else + r = print_user_status_info(bus, path, &new_line); + + if (r < 0) + return r; + } + + return 0; +} + +static int show_seat(int argc, char *argv[], void *userdata) { + bool properties, new_line = false; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + properties = !strstr(argv[0], "status"); + + pager_open(arg_pager_flags); + + if (argc <= 1) { + /* If no argument is specified inspect the manager itself */ + if (properties) + return show_properties(bus, "/org/freedesktop/login1", &new_line); + + return print_seat_status_info(bus, "/org/freedesktop/login1/seat/auto", &new_line); + } + + for (int i = 1; i < argc; i++) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message * reply = NULL; + const char *path = NULL; + + r = bus_call_method(bus, bus_login_mgr, "GetSeat", &error, &reply, "s", argv[i]); + if (r < 0) + return log_error_errno(r, "Failed to get seat: %s", bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "o", &path); + if (r < 0) + return bus_log_parse_error(r); + + if (properties) + r = show_properties(bus, path, &new_line); + else + r = print_seat_status_info(bus, path, &new_line); + + if (r < 0) + return r; + } + + return 0; +} + +static int activate(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); + + if (argc < 2) { + r = sd_bus_call_method( + bus, + "org.freedesktop.login1", + "/org/freedesktop/login1/session/auto", + "org.freedesktop.login1.Session", + streq(argv[0], "lock-session") ? "Lock" : + streq(argv[0], "unlock-session") ? "Unlock" : + streq(argv[0], "terminate-session") ? "Terminate" : + "Activate", + &error, NULL, NULL); + if (r < 0) + return log_error_errno(r, "Failed to issue method call: %s", bus_error_message(&error, r)); + + return 0; + } + + for (int i = 1; i < argc; i++) { + + r = bus_call_method( + bus, + bus_login_mgr, + streq(argv[0], "lock-session") ? "LockSession" : + streq(argv[0], "unlock-session") ? "UnlockSession" : + streq(argv[0], "terminate-session") ? "TerminateSession" : + "ActivateSession", + &error, NULL, + "s", argv[i]); + if (r < 0) + return log_error_errno(r, "Failed to issue method call: %s", bus_error_message(&error, r)); + } + + return 0; +} + +static int kill_session(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); + + if (!arg_kill_whom) + arg_kill_whom = "all"; + + for (int i = 1; i < argc; i++) { + + r = bus_call_method( + bus, + bus_login_mgr, + "KillSession", + &error, NULL, + "ssi", argv[i], arg_kill_whom, arg_signal); + if (r < 0) + return log_error_errno(r, "Could not kill session: %s", bus_error_message(&error, r)); + } + + return 0; +} + +static int enable_linger(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus = ASSERT_PTR(userdata); + char* short_argv[3]; + bool b; + int r; + + assert(argv); + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); + + b = streq(argv[0], "enable-linger"); + + if (argc < 2) { + /* No argument? Let's use an empty user name, + * then logind will use our user. */ + + short_argv[0] = argv[0]; + short_argv[1] = (char*) ""; + short_argv[2] = NULL; + argv = short_argv; + argc = 2; + } + + for (int i = 1; i < argc; i++) { + uid_t uid; + + if (isempty(argv[i])) + uid = UID_INVALID; + else { + r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL, 0); + if (r < 0) + return log_error_errno(r, "Failed to look up user %s: %m", argv[i]); + } + + r = bus_call_method( + bus, + bus_login_mgr, + "SetUserLinger", + &error, NULL, + "ubb", (uint32_t) uid, b, true); + if (r < 0) + return log_error_errno(r, "Could not enable linger: %s", bus_error_message(&error, r)); + } + + return 0; +} + +static int terminate_user(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); + + for (int i = 1; i < argc; i++) { + uid_t uid; + + if (isempty(argv[i])) + uid = getuid(); + else { + const char *u = argv[i]; + + r = get_user_creds(&u, &uid, NULL, NULL, NULL, 0); + if (r < 0) + return log_error_errno(r, "Failed to look up user %s: %m", argv[i]); + } + + r = bus_call_method(bus, bus_login_mgr, "TerminateUser", &error, NULL, "u", (uint32_t) uid); + if (r < 0) + return log_error_errno(r, "Could not terminate user: %s", bus_error_message(&error, r)); + } + + return 0; +} + +static int kill_user(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); + + if (!arg_kill_whom) + arg_kill_whom = "all"; + + for (int i = 1; i < argc; i++) { + uid_t uid; + + if (isempty(argv[i])) + uid = getuid(); + else { + const char *u = argv[i]; + + r = get_user_creds(&u, &uid, NULL, NULL, NULL, 0); + if (r < 0) + return log_error_errno(r, "Failed to look up user %s: %m", argv[i]); + } + + r = bus_call_method( + bus, + bus_login_mgr, + "KillUser", + &error, NULL, + "ui", (uint32_t) uid, arg_signal); + if (r < 0) + return log_error_errno(r, "Could not kill user: %s", bus_error_message(&error, r)); + } + + return 0; +} + +static int attach(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); + + for (int i = 2; i < argc; i++) { + + r = bus_call_method( + bus, + bus_login_mgr, + "AttachDevice", + &error, NULL, + "ssb", argv[1], argv[i], true); + if (r < 0) + return log_error_errno(r, "Could not attach device: %s", bus_error_message(&error, r)); + } + + return 0; +} + +static int flush_devices(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); + + r = bus_call_method(bus, bus_login_mgr, "FlushDevices", &error, NULL, "b", true); + if (r < 0) + return log_error_errno(r, "Could not flush devices: %s", bus_error_message(&error, r)); + + return 0; +} + +static int lock_sessions(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); + + r = bus_call_method( + bus, + bus_login_mgr, + streq(argv[0], "lock-sessions") ? "LockSessions" : "UnlockSessions", + &error, NULL, + NULL); + if (r < 0) + return log_error_errno(r, "Could not lock sessions: %s", bus_error_message(&error, r)); + + return 0; +} + +static int terminate_seat(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus = ASSERT_PTR(userdata); + int r; + + assert(argv); + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); + + for (int i = 1; i < argc; i++) { + + r = bus_call_method(bus, bus_login_mgr, "TerminateSeat", &error, NULL, "s", argv[i]); + if (r < 0) + return log_error_errno(r, "Could not terminate seat: %s", bus_error_message(&error, r)); + } + + return 0; +} + +static int help(int argc, char *argv[], void *userdata) { + _cleanup_free_ char *link = NULL; + int r; + + pager_open(arg_pager_flags); + + r = terminal_urlify_man("loginctl", "1", &link); + if (r < 0) + return log_oom(); + + printf("%s [OPTIONS...] COMMAND ...\n\n" + "%sSend control commands to or query the login manager.%s\n" + "\nSession Commands:\n" + " list-sessions List sessions\n" + " session-status [ID...] Show session status\n" + " show-session [ID...] Show properties of sessions or the manager\n" + " activate [ID] Activate a session\n" + " lock-session [ID...] Screen lock one or more sessions\n" + " unlock-session [ID...] Screen unlock one or more sessions\n" + " lock-sessions Screen lock all current sessions\n" + " unlock-sessions Screen unlock all current sessions\n" + " terminate-session ID... Terminate one or more sessions\n" + " kill-session ID... Send signal to processes of a session\n" + "\nUser Commands:\n" + " list-users List users\n" + " user-status [USER...] Show user status\n" + " show-user [USER...] Show properties of users or the manager\n" + " enable-linger [USER...] Enable linger state of one or more users\n" + " disable-linger [USER...] Disable linger state of one or more users\n" + " terminate-user USER... Terminate all sessions of one or more users\n" + " kill-user USER... Send signal to processes of a user\n" + "\nSeat Commands:\n" + " list-seats List seats\n" + " seat-status [NAME...] Show seat status\n" + " show-seat [NAME...] Show properties of seats or the manager\n" + " attach NAME DEVICE... Attach one or more devices to a seat\n" + " flush-devices Flush all device associations\n" + " terminate-seat NAME... Terminate all sessions on one or more seats\n" + "\nOptions:\n" + " -h --help Show this help\n" + " --version Show package version\n" + " --no-pager Do not pipe output into a pager\n" + " --no-legend Do not show the headers and footers\n" + " --no-ask-password Don't prompt for password\n" + " -H --host=[USER@]HOST Operate on remote host\n" + " -M --machine=CONTAINER Operate on local container\n" + " -p --property=NAME Show only properties by this name\n" + " -P NAME Equivalent to --value --property=NAME\n" + " -a --all Show all properties, including empty ones\n" + " --value When showing properties, only print the value\n" + " -l --full Do not ellipsize output\n" + " --kill-whom=WHOM Whom to send signal to\n" + " -s --signal=SIGNAL Which signal to send\n" + " -n --lines=INTEGER Number of journal entries to show\n" + " -o --output=STRING Change journal output mode (short, short-precise,\n" + " short-iso, short-iso-precise, short-full,\n" + " short-monotonic, short-unix, short-delta,\n" + " json, json-pretty, json-sse, json-seq, cat,\n" + " verbose, export, with-unit)\n" + "\nSee the %s for details.\n", + program_invocation_short_name, + ansi_highlight(), + ansi_normal(), + link); + + return 0; +} + +static int parse_argv(int argc, char *argv[]) { + enum { + ARG_VERSION = 0x100, + ARG_VALUE, + ARG_NO_PAGER, + ARG_NO_LEGEND, + ARG_KILL_WHOM, + ARG_NO_ASK_PASSWORD, + }; + + static const struct option options[] = { + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, ARG_VERSION }, + { "property", required_argument, NULL, 'p' }, + { "all", no_argument, NULL, 'a' }, + { "value", no_argument, NULL, ARG_VALUE }, + { "full", no_argument, NULL, 'l' }, + { "no-pager", no_argument, NULL, ARG_NO_PAGER }, + { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, + { "kill-whom", required_argument, NULL, ARG_KILL_WHOM }, + { "signal", required_argument, NULL, 's' }, + { "host", required_argument, NULL, 'H' }, + { "machine", required_argument, NULL, 'M' }, + { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD }, + { "lines", required_argument, NULL, 'n' }, + { "output", required_argument, NULL, 'o' }, + {} + }; + + int c, r; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "hp:P:als:H:M:n:o:", options, NULL)) >= 0) + + switch (c) { + + case 'h': + return help(0, NULL, NULL); + + case ARG_VERSION: + return version(); + + case 'P': + SET_FLAG(arg_print_flags, BUS_PRINT_PROPERTY_ONLY_VALUE, true); + _fallthrough_; + + case 'p': { + r = strv_extend(&arg_property, optarg); + if (r < 0) + return log_oom(); + + /* If the user asked for a particular + * property, show it to them, even if it is + * empty. */ + SET_FLAG(arg_print_flags, BUS_PRINT_PROPERTY_SHOW_EMPTY, true); + break; + } + + case 'a': + SET_FLAG(arg_print_flags, BUS_PRINT_PROPERTY_SHOW_EMPTY, true); + break; + + case ARG_VALUE: + SET_FLAG(arg_print_flags, BUS_PRINT_PROPERTY_ONLY_VALUE, true); + break; + + case 'l': + arg_full = true; + break; + + case 'n': + if (safe_atou(optarg, &arg_lines) < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Failed to parse lines '%s'", optarg); + break; + + case 'o': + if (streq(optarg, "help")) { + DUMP_STRING_TABLE(output_mode, OutputMode, _OUTPUT_MODE_MAX); + return 0; + } + + arg_output = output_mode_from_string(optarg); + if (arg_output < 0) + return log_error_errno(arg_output, "Unknown output '%s'.", optarg); + + if (OUTPUT_MODE_IS_JSON(arg_output)) + arg_legend = false; + + break; + + case ARG_NO_PAGER: + arg_pager_flags |= PAGER_DISABLE; + break; + + case ARG_NO_LEGEND: + arg_legend = false; + break; + + case ARG_NO_ASK_PASSWORD: + arg_ask_password = false; + break; + + case ARG_KILL_WHOM: + arg_kill_whom = optarg; + break; + + case 's': + r = parse_signal_argument(optarg, &arg_signal); + if (r <= 0) + return r; + break; + + case 'H': + arg_transport = BUS_TRANSPORT_REMOTE; + arg_host = optarg; + break; + + case 'M': + arg_transport = BUS_TRANSPORT_MACHINE; + arg_host = optarg; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached(); + } + + return 1; +} + +static int loginctl_main(int argc, char *argv[], sd_bus *bus) { + static const Verb verbs[] = { + { "help", VERB_ANY, VERB_ANY, 0, help }, + { "list-sessions", VERB_ANY, 1, VERB_DEFAULT, list_sessions }, + { "session-status", VERB_ANY, VERB_ANY, 0, show_session }, + { "show-session", VERB_ANY, VERB_ANY, 0, show_session }, + { "activate", VERB_ANY, 2, 0, activate }, + { "lock-session", VERB_ANY, VERB_ANY, 0, activate }, + { "unlock-session", VERB_ANY, VERB_ANY, 0, activate }, + { "lock-sessions", VERB_ANY, 1, 0, lock_sessions }, + { "unlock-sessions", VERB_ANY, 1, 0, lock_sessions }, + { "terminate-session", 2, VERB_ANY, 0, activate }, + { "kill-session", 2, VERB_ANY, 0, kill_session }, + { "list-users", VERB_ANY, 1, 0, list_users }, + { "user-status", VERB_ANY, VERB_ANY, 0, show_user }, + { "show-user", VERB_ANY, VERB_ANY, 0, show_user }, + { "enable-linger", VERB_ANY, VERB_ANY, 0, enable_linger }, + { "disable-linger", VERB_ANY, VERB_ANY, 0, enable_linger }, + { "terminate-user", 2, VERB_ANY, 0, terminate_user }, + { "kill-user", 2, VERB_ANY, 0, kill_user }, + { "list-seats", VERB_ANY, 1, 0, list_seats }, + { "seat-status", VERB_ANY, VERB_ANY, 0, show_seat }, + { "show-seat", VERB_ANY, VERB_ANY, 0, show_seat }, + { "attach", 3, VERB_ANY, 0, attach }, + { "flush-devices", VERB_ANY, 1, 0, flush_devices }, + { "terminate-seat", 2, VERB_ANY, 0, terminate_seat }, + {} + }; + + return dispatch_verb(argc, argv, verbs, bus); +} + +static int run(int argc, char *argv[]) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int r; + + setlocale(LC_ALL, ""); + log_setup(); + + /* The journal merging logic potentially needs a lot of fds. */ + (void) rlimit_nofile_bump(HIGH_RLIMIT_NOFILE); + + sigbus_install(); + + r = parse_argv(argc, argv); + if (r <= 0) + return r; + + r = bus_connect_transport(arg_transport, arg_host, false, &bus); + if (r < 0) + return bus_log_connect_error(r, arg_transport); + + (void) sd_bus_set_allow_interactive_authorization(bus, arg_ask_password); + + return loginctl_main(argc, argv, bus); +} + +DEFINE_MAIN_FUNCTION(run); |