src/libsystemd/sd-login/test-login.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <poll.h>
   4
   5 #include "sd-login.h"
   6
   7 #include "alloc-util.h"
   8 #include "fd-util.h"
   9 #include "format-util.h"
  10 #include "log.h"
  11 #include "string-util.h"
  12 #include "strv.h"
  13 #include "time-util.h"
  14 #include "util.h"
  15
  16 static char* format_uids(char **buf, uid_t* uids, int count) {
  17         int pos = 0, k, inc;
  18         size_t size = (DECIMAL_STR_MAX(uid_t) + 1) * count + 1;
  19
  20         assert_se(*buf = malloc(size));
  21
  22         for (k = 0; k < count; k++) {
  23                 sprintf(*buf + pos, "%s"UID_FMT"%n", k > 0 ? " " : "", uids[k], &inc);
  24                 pos += inc;
  25         }
  26
  27         assert_se(pos < (ssize_t)size);
  28         (*buf)[pos] = '\0';
  29
  30         return *buf;
  31 }
  32
  33 static void test_login(void) {
  34         _cleanup_close_pair_ int pair[2] = { -1, -1 };
  35         _cleanup_free_ char *pp = NULL, *qq = NULL,
  36                 *display_session = NULL, *cgroup = NULL,
  37                 *display = NULL, *remote_user = NULL, *remote_host = NULL,
  38                 *type = NULL, *class = NULL, *state = NULL, *state2 = NULL,
  39                 *seat = NULL, *session = NULL,
  40                 *unit = NULL, *user_unit = NULL, *slice = NULL;
  41         int r;
  42         uid_t u, u2;
  43         char *t, **seats, **sessions;
  44
  45         r = sd_pid_get_unit(0, &unit);
  46         assert_se(r >= 0 || r == -ENODATA);
  47         log_info("sd_pid_get_unit(0, …) → \"%s\"", strna(unit));
  48
  49         r = sd_pid_get_user_unit(0, &user_unit);
  50         assert_se(r >= 0 || r == -ENODATA);
  51         log_info("sd_pid_get_user_unit(0, …) → \"%s\"", strna(user_unit));
  52
  53         r = sd_pid_get_slice(0, &slice);
  54         assert_se(r >= 0 || r == -ENODATA);
  55         log_info("sd_pid_get_slice(0, …) → \"%s\"", strna(slice));
  56
  57         r = sd_pid_get_session(0, &session);
  58         if (r < 0) {
  59                 log_warning_errno(r, "sd_pid_get_session(0, …): %m");
  60                 if (r == -ENODATA)
  61                         log_info("Seems we are not running in a session, skipping some tests.");
  62         } else {
  63                 log_info("sd_pid_get_session(0, …) → \"%s\"", session);
  64
  65                 assert_se(sd_pid_get_owner_uid(0, &u2) == 0);
  66                 log_info("sd_pid_get_owner_uid(0, …) → "UID_FMT, u2);
  67
  68                 assert_se(sd_pid_get_cgroup(0, &cgroup) == 0);
  69                 log_info("sd_pid_get_cgroup(0, …) → \"%s\"", cgroup);
  70
  71                 r = sd_uid_get_display(u2, &display_session);
  72                 assert_se(r >= 0 || r == -ENODATA);
  73                 log_info("sd_uid_get_display("UID_FMT", …) → \"%s\"",
  74                          u2, strnull(display_session));
  75
  76                 assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == 0);
  77                 sd_peer_get_session(pair[0], &pp);
  78                 sd_peer_get_session(pair[1], &qq);
  79                 assert_se(streq_ptr(pp, qq));
  80
  81                 r = sd_uid_get_sessions(u2, false, &sessions);
  82                 assert_se(r >= 0);
  83                 assert_se(r == (int) strv_length(sessions));
  84                 assert_se(t = strv_join(sessions, " "));
  85                 strv_free(sessions);
  86                 log_info("sd_uid_get_sessions("UID_FMT", …) → [%i] \"%s\"", u2, r, t);
  87                 free(t);
  88
  89                 assert_se(r == sd_uid_get_sessions(u2, false, NULL));
  90
  91                 r = sd_uid_get_seats(u2, false, &seats);
  92                 assert_se(r >= 0);
  93                 assert_se(r == (int) strv_length(seats));
  94                 assert_se(t = strv_join(seats, " "));
  95                 strv_free(seats);
  96                 log_info("sd_uid_get_seats("UID_FMT", …) → [%i] \"%s\"", u2, r, t);
  97                 free(t);
  98
  99                 assert_se(r == sd_uid_get_seats(u2, false, NULL));
 100         }
 101
 102         if (session) {
 103                 r = sd_session_is_active(session);
 104                 assert_se(r >= 0);
 105                 log_info("sd_session_is_active(\"%s\") → %s", session, yes_no(r));
 106
 107                 r = sd_session_is_remote(session);
 108                 assert_se(r >= 0);
 109                 log_info("sd_session_is_remote(\"%s\") → %s", session, yes_no(r));
 110
 111                 r = sd_session_get_state(session, &state);
 112                 assert_se(r >= 0);
 113                 log_info("sd_session_get_state(\"%s\") → \"%s\"", session, state);
 114
 115                 assert_se(sd_session_get_uid(session, &u) >= 0);
 116                 log_info("sd_session_get_uid(\"%s\") → "UID_FMT, session, u);
 117                 assert_se(u == u2);
 118
 119                 assert_se(sd_session_get_type(session, &type) >= 0);
 120                 log_info("sd_session_get_type(\"%s\") → \"%s\"", session, type);
 121
 122                 assert_se(sd_session_get_class(session, &class) >= 0);
 123                 log_info("sd_session_get_class(\"%s\") → \"%s\"", session, class);
 124
 125                 r = sd_session_get_display(session, &display);
 126                 assert_se(r >= 0 || r == -ENODATA);
 127                 log_info("sd_session_get_display(\"%s\") → \"%s\"", session, strna(display));
 128
 129                 r = sd_session_get_remote_user(session, &remote_user);
 130                 assert_se(r >= 0 || r == -ENODATA);
 131                 log_info("sd_session_get_remote_user(\"%s\") → \"%s\"",
 132                          session, strna(remote_user));
 133
 134                 r = sd_session_get_remote_host(session, &remote_host);
 135                 assert_se(r >= 0 || r == -ENODATA);
 136                 log_info("sd_session_get_remote_host(\"%s\") → \"%s\"",
 137                          session, strna(remote_host));
 138
 139                 r = sd_session_get_seat(session, &seat);
 140                 if (r >= 0) {
 141                         assert_se(seat);
 142
 143                         log_info("sd_session_get_seat(\"%s\") → \"%s\"", session, seat);
 144
 145 #pragma GCC diagnostic push
 146 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 147                         r = sd_seat_can_multi_session(seat);
 148 #pragma GCC diagnostic pop
 149                         assert_se(r == 1);
 150                         log_info("sd_session_can_multi_seat(\"%s\") → %s", seat, yes_no(r));
 151
 152                         r = sd_seat_can_tty(seat);
 153                         assert_se(r >= 0);
 154                         log_info("sd_session_can_tty(\"%s\") → %s", seat, yes_no(r));
 155
 156                         r = sd_seat_can_graphical(seat);
 157                         assert_se(r >= 0);
 158                         log_info("sd_session_can_graphical(\"%s\") → %s", seat, yes_no(r));
 159                 } else {
 160                         log_info_errno(r, "sd_session_get_seat(\"%s\"): %m", session);
 161                         assert_se(r == -ENODATA);
 162                 }
 163
 164                 assert_se(sd_uid_get_state(u, &state2) >= 0);
 165                 log_info("sd_uid_get_state("UID_FMT", …) → %s", u, state2);
 166         }
 167
 168         if (seat) {
 169                 _cleanup_free_ char *session2 = NULL, *buf = NULL;
 170                 _cleanup_free_ uid_t *uids = NULL;
 171                 unsigned n;
 172
 173                 assert_se(sd_uid_is_on_seat(u, 0, seat) > 0);
 174
 175                 r = sd_seat_get_active(seat, &session2, &u2);
 176                 assert_se(r >= 0);
 177                 log_info("sd_seat_get_active(\"%s\", …) → \"%s\", "UID_FMT, seat, session2, u2);
 178
 179                 r = sd_uid_is_on_seat(u, 1, seat);
 180                 assert_se(r >= 0);
 181                 assert_se(!!r == streq(session, session2));
 182
 183                 r = sd_seat_get_sessions(seat, &sessions, &uids, &n);
 184                 assert_se(r >= 0);
 185                 assert_se(r == (int) strv_length(sessions));
 186                 assert_se(t = strv_join(sessions, " "));
 187                 strv_free(sessions);
 188                 log_info("sd_seat_get_sessions(\"%s\", …) → %i, \"%s\", [%i] {%s}",
 189                          seat, r, t, n, format_uids(&buf, uids, n));
 190                 free(t);
 191
 192                 assert_se(sd_seat_get_sessions(seat, NULL, NULL, NULL) == r);
 193         }
 194
 195         r = sd_get_seats(&seats);
 196         assert_se(r >= 0);
 197         assert_se(r == (int) strv_length(seats));
 198         assert_se(t = strv_join(seats, ", "));
 199         strv_free(seats);
 200         log_info("sd_get_seats(…) → [%i] \"%s\"", r, t);
 201         t = mfree(t);
 202
 203         assert_se(sd_get_seats(NULL) == r);
 204
 205         r = sd_seat_get_active(NULL, &t, NULL);
 206         assert_se(IN_SET(r, 0, -ENODATA));
 207         log_info("sd_seat_get_active(NULL, …) (active session on current seat) → %s", strnull(t));
 208         free(t);
 209
 210         r = sd_get_sessions(&sessions);
 211         assert_se(r >= 0);
 212         assert_se(r == (int) strv_length(sessions));
 213         assert_se(t = strv_join(sessions, ", "));
 214         strv_free(sessions);
 215         log_info("sd_get_sessions(…) → [%i] \"%s\"", r, t);
 216         free(t);
 217
 218         assert_se(sd_get_sessions(NULL) == r);
 219
 220         {
 221                 _cleanup_free_ uid_t *uids = NULL;
 222                 _cleanup_free_ char *buf = NULL;
 223
 224                 r = sd_get_uids(&uids);
 225                 assert_se(r >= 0);
 226                 log_info("sd_get_uids(…) → [%i] {%s}", r, format_uids(&buf, uids, r));
 227
 228                 assert_se(sd_get_uids(NULL) == r);
 229         }
 230
 231         {
 232                 _cleanup_strv_free_ char **machines = NULL;
 233                 _cleanup_free_ char *buf = NULL;
 234
 235                 r = sd_get_machine_names(&machines);
 236                 assert_se(r >= 0);
 237                 assert_se(r == (int) strv_length(machines));
 238                 assert_se(buf = strv_join(machines, " "));
 239                 log_info("sd_get_machines(…) → [%i] \"%s\"", r, buf);
 240
 241                 assert_se(sd_get_machine_names(NULL) == r);
 242         }
 243 }
 244
 245 static void test_monitor(void) {
 246         sd_login_monitor *m = NULL;
 247         unsigned n;
 248         int r;
 249
 250         r = sd_login_monitor_new("session", &m);
 251         assert_se(r >= 0);
 252
 253         for (n = 0; n < 5; n++) {
 254                 struct pollfd pollfd = {};
 255                 usec_t timeout, nw;
 256
 257                 assert_se((pollfd.fd = sd_login_monitor_get_fd(m)) >= 0);
 258                 assert_se((pollfd.events = sd_login_monitor_get_events(m)) >= 0);
 259
 260                 assert_se(sd_login_monitor_get_timeout(m, &timeout) >= 0);
 261
 262                 nw = now(CLOCK_MONOTONIC);
 263
 264                 r = poll(&pollfd, 1,
 265                          timeout == (uint64_t) -1 ? -1 :
 266                          timeout > nw ? (int) ((timeout - nw) / 1000) :
 267                          0);
 268
 269                 assert_se(r >= 0);
 270
 271                 sd_login_monitor_flush(m);
 272                 printf("Wake!\n");
 273         }
 274
 275         sd_login_monitor_unref(m);
 276 }
 277
 278 int main(int argc, char* argv[]) {
 279         log_parse_environment();
 280         log_open();
 281
 282         log_info("/* Information printed is from the live system */");
 283
 284         test_login();
 285
 286         if (streq_ptr(argv[1], "-m"))
 287                 test_monitor();
 288
 289         return 0;
 290 }