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

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <poll.h>
   4 #include <sys/socket.h>
   5
   6 #include "sd-login.h"
   7
   8 #include "alloc-util.h"
   9 #include "argv-util.h"
  10 #include "errno-list.h"
  11 #include "fd-util.h"
  12 #include "format-util.h"
  13 #include "log.h"
  14 #include "pidfd-util.h"
  15 #include "process-util.h"
  16 #include "string-util.h"
  17 #include "strv.h"
  18 #include "tests.h"
  19 #include "time-util.h"
  20 #include "user-util.h"
  21
  22 static char* format_uids(char **buf, uid_t* uids, int count) {
  23         int pos = 0, inc;
  24         size_t size = (DECIMAL_STR_MAX(uid_t) + 1) * count + 1;
  25
  26         assert_se(*buf = malloc(size));
  27
  28         for (int k = 0; k < count; k++) {
  29                 sprintf(*buf + pos, "%s"UID_FMT"%n", k > 0 ? " " : "", uids[k], &inc);
  30                 pos += inc;
  31         }
  32
  33         assert_se(pos < (ssize_t)size);
  34         (*buf)[pos] = '\0';
  35
  36         return *buf;
  37 }
  38
  39 static const char *e(int r) {
  40         return r == 0 ? "OK" : errno_to_name(r);
  41 }
  42
  43 TEST(login) {
  44         _cleanup_close_pair_ int pair[2] = EBADF_PAIR;
  45         _cleanup_free_ char *pp = NULL, *qq = NULL,
  46                 *display_session = NULL, *cgroup = NULL,
  47                 *display = NULL, *remote_user = NULL, *remote_host = NULL,
  48                 *type = NULL, *class = NULL, *state = NULL, *state2 = NULL,
  49                 *seat = NULL, *session = NULL,
  50                 *unit = NULL, *user_unit = NULL, *slice = NULL;
  51         _cleanup_close_ int pidfd = -EBADF;
  52         int r;
  53         uid_t u, u2 = UID_INVALID;
  54         char *t, **seats = NULL, **sessions = NULL;
  55
  56         r = sd_pid_get_unit(0, &unit);
  57         log_info("sd_pid_get_unit(0, …) → %s / \"%s\"", e(r), strnull(unit));
  58         assert_se(IN_SET(r, 0, -ENODATA));
  59
  60         r = sd_pid_get_user_unit(0, &user_unit);
  61         log_info("sd_pid_get_user_unit(0, …) → %s / \"%s\"", e(r), strnull(user_unit));
  62         assert_se(IN_SET(r, 0, -ENODATA));
  63
  64         r = sd_pid_get_slice(0, &slice);
  65         log_info("sd_pid_get_slice(0, …) → %s / \"%s\"", e(r), strnull(slice));
  66         assert_se(IN_SET(r, 0, -ENODATA));
  67
  68         r = sd_pid_get_owner_uid(0, &u2);
  69         log_info("sd_pid_get_owner_uid(0, …) → %s / "UID_FMT, e(r), u2);
  70         assert_se(IN_SET(r, 0, -ENODATA));
  71
  72         r = sd_pid_get_session(0, &session);
  73         log_info("sd_pid_get_session(0, …) → %s / \"%s\"", e(r), strnull(session));
  74
  75         r = sd_pid_get_cgroup(0, &cgroup);
  76         log_info("sd_pid_get_cgroup(0, …) → %s / \"%s\"", e(r), strnull(cgroup));
  77         assert_se(IN_SET(r, 0, -ENOMEDIUM));
  78
  79         pidfd = pidfd_open(getpid_cached(), 0);
  80         if (pidfd >= 0) {
  81                 _cleanup_free_ char *cgroup2 = NULL, *session2 = NULL,
  82                         *unit2 = NULL, *user_unit2 = NULL, *slice2 = NULL;
  83
  84                 r = sd_pidfd_get_unit(pidfd, &unit2);
  85                 log_info("sd_pidfd_get_unit(pidfd, …) → %s / \"%s\"", e(r), strnull(unit2));
  86                 assert_se(IN_SET(r, 0, -ENODATA));
  87
  88                 r = sd_pidfd_get_user_unit(pidfd, &user_unit2);
  89                 log_info("sd_pidfd_get_user_unit(pidfd, …) → %s / \"%s\"", e(r), strnull(user_unit2));
  90                 assert_se(IN_SET(r, 0, -ENODATA));
  91
  92                 r = sd_pidfd_get_slice(pidfd, &slice2);
  93                 log_info("sd_pidfd_get_slice(pidfd, …) → %s / \"%s\"", e(r), strnull(slice2));
  94                 assert_se(IN_SET(r, 0, -ENODATA));
  95
  96                 r = sd_pidfd_get_owner_uid(pidfd, &u2);
  97                 log_info("sd_pidfd_get_owner_uid(pidfd, …) → %s / "UID_FMT, e(r), u2);
  98                 assert_se(IN_SET(r, 0, -ENODATA));
  99
 100                 r = sd_pidfd_get_session(pidfd, &session2);
 101                 log_info("sd_pidfd_get_session(pidfd, …) → %s / \"%s\"", e(r), strnull(session2));
 102
 103                 r = sd_pidfd_get_cgroup(pidfd, &cgroup2);
 104                 log_info("sd_pidfd_get_cgroup(pidfd, …) → %s / \"%s\"", e(r), strnull(cgroup2));
 105                 assert_se(IN_SET(r, 0, -ENOMEDIUM));
 106         }
 107
 108         r = ASSERT_RETURN_IS_CRITICAL(uid_is_valid(u2), sd_uid_get_display(u2, &display_session));
 109         log_info("sd_uid_get_display("UID_FMT", …) → %s / \"%s\"", u2, e(r), strnull(display_session));
 110         if (u2 == UID_INVALID)
 111                 assert_se(r == -EINVAL);
 112         else
 113                 assert_se(IN_SET(r, 0, -ENODATA));
 114
 115         assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == 0);
 116         sd_peer_get_session(pair[0], &pp);
 117         sd_peer_get_session(pair[1], &qq);
 118         assert_se(streq_ptr(pp, qq));
 119
 120         r = ASSERT_RETURN_IS_CRITICAL(uid_is_valid(u2), sd_uid_get_sessions(u2, false, &sessions));
 121         assert_se(t = strv_join(sessions, " "));
 122         log_info("sd_uid_get_sessions("UID_FMT", …) → %s \"%s\"", u2, e(r), t);
 123         if (u2 == UID_INVALID)
 124                 assert_se(r == -EINVAL);
 125         else {
 126                 assert_se(r >= 0);
 127                 assert_se(r == (int) strv_length(sessions));
 128         }
 129         sessions = strv_free(sessions);
 130         free(t);
 131
 132         assert_se(r == ASSERT_RETURN_IS_CRITICAL(uid_is_valid(u2), sd_uid_get_sessions(u2, false, NULL)));
 133
 134         r = ASSERT_RETURN_IS_CRITICAL(uid_is_valid(u2), sd_uid_get_seats(u2, false, &seats));
 135         assert_se(t = strv_join(seats, " "));
 136         log_info("sd_uid_get_seats("UID_FMT", …) → %s \"%s\"", u2, e(r), t);
 137         if (u2 == UID_INVALID)
 138                 assert_se(r == -EINVAL);
 139         else {
 140                 assert_se(r >= 0);
 141                 assert_se(r == (int) strv_length(seats));
 142         }
 143         seats = strv_free(seats);
 144         free(t);
 145
 146         assert_se(r == ASSERT_RETURN_IS_CRITICAL(uid_is_valid(u2), sd_uid_get_seats(u2, false, NULL)));
 147
 148         if (session) {
 149                 r = sd_session_is_active(session);
 150                 if (r == -ENXIO)
 151                         log_notice("sd_session_is_active() failed with ENXIO, it seems logind is not running.");
 152                 else {
 153                         /* All those tests will fail with ENXIO, so let's skip them. */
 154
 155                         assert_se(r >= 0);
 156                         log_info("sd_session_is_active(\"%s\") → %s", session, yes_no(r));
 157
 158                         r = sd_session_is_remote(session);
 159                         assert_se(r >= 0);
 160                         log_info("sd_session_is_remote(\"%s\") → %s", session, yes_no(r));
 161
 162                         r = sd_session_get_state(session, &state);
 163                         assert_se(r == 0);
 164                         log_info("sd_session_get_state(\"%s\") → \"%s\"", session, state);
 165
 166                         assert_se(sd_session_get_uid(session, &u) >= 0);
 167                         log_info("sd_session_get_uid(\"%s\") → "UID_FMT, session, u);
 168                         assert_se(u == u2);
 169
 170                         assert_se(sd_session_get_type(session, &type) >= 0);
 171                         log_info("sd_session_get_type(\"%s\") → \"%s\"", session, type);
 172
 173                         assert_se(sd_session_get_class(session, &class) >= 0);
 174                         log_info("sd_session_get_class(\"%s\") → \"%s\"", session, class);
 175
 176                         r = sd_session_get_display(session, &display);
 177                         assert_se(IN_SET(r, 0, -ENODATA));
 178                         log_info("sd_session_get_display(\"%s\") → \"%s\"", session, strna(display));
 179
 180                         r = sd_session_get_remote_user(session, &remote_user);
 181                         assert_se(IN_SET(r, 0, -ENODATA));
 182                         log_info("sd_session_get_remote_user(\"%s\") → \"%s\"",
 183                                  session, strna(remote_user));
 184
 185                         r = sd_session_get_remote_host(session, &remote_host);
 186                         assert_se(IN_SET(r, 0, -ENODATA));
 187                         log_info("sd_session_get_remote_host(\"%s\") → \"%s\"",
 188                                  session, strna(remote_host));
 189
 190                         r = sd_session_get_seat(session, &seat);
 191                         if (r >= 0) {
 192                                 assert_se(seat);
 193
 194                                 log_info("sd_session_get_seat(\"%s\") → \"%s\"", session, seat);
 195
 196 #pragma GCC diagnostic push
 197 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 198                                 r = sd_seat_can_multi_session(seat);
 199 #pragma GCC diagnostic pop
 200                                 assert_se(r == 1);
 201                                 log_info("sd_session_can_multi_seat(\"%s\") → %s", seat, yes_no(r));
 202
 203                                 r = sd_seat_can_tty(seat);
 204                                 assert_se(r >= 0);
 205                                 log_info("sd_session_can_tty(\"%s\") → %s", seat, yes_no(r));
 206
 207                                 r = sd_seat_can_graphical(seat);
 208                                 assert_se(r >= 0);
 209                                 log_info("sd_session_can_graphical(\"%s\") → %s", seat, yes_no(r));
 210                         } else {
 211                                 log_info_errno(r, "sd_session_get_seat(\"%s\"): %m", session);
 212                                 assert_se(r == -ENODATA);
 213                         }
 214
 215                         assert_se(sd_uid_get_state(u, &state2) == 0);
 216                         log_info("sd_uid_get_state("UID_FMT", …) → %s", u, state2);
 217                 }
 218         }
 219
 220         if (seat) {
 221                 _cleanup_free_ char *session2 = NULL, *buf = NULL;
 222                 _cleanup_free_ uid_t *uids = NULL;
 223                 unsigned n;
 224
 225                 assert_se(sd_uid_is_on_seat(u, 0, seat) > 0);
 226
 227                 r = sd_seat_get_active(seat, &session2, &u2);
 228                 assert_se(r == 0);
 229                 log_info("sd_seat_get_active(\"%s\", …) → \"%s\", "UID_FMT, seat, session2, u2);
 230
 231                 r = sd_uid_is_on_seat(u, 1, seat);
 232                 assert_se(IN_SET(r, 0, 1));
 233                 assert_se(!!r == streq(session, session2));
 234
 235                 r = sd_seat_get_sessions(seat, &sessions, &uids, &n);
 236                 assert_se(r >= 0);
 237                 assert_se(r == (int) strv_length(sessions));
 238                 assert_se(t = strv_join(sessions, " "));
 239                 strv_free(sessions);
 240                 log_info("sd_seat_get_sessions(\"%s\", …) → %s, \"%s\", [%u] {%s}",
 241                          seat, e(r), t, n, format_uids(&buf, uids, n));
 242                 free(t);
 243
 244                 assert_se(sd_seat_get_sessions(seat, NULL, NULL, NULL) == r);
 245         }
 246
 247         r = sd_get_seats(&seats);
 248         assert_se(r >= 0);
 249         assert_se(r == (int) strv_length(seats));
 250         assert_se(t = strv_join(seats, ", "));
 251         strv_free(seats);
 252         log_info("sd_get_seats(…) → [%i] \"%s\"", r, t);
 253         t = mfree(t);
 254
 255         assert_se(sd_get_seats(NULL) == r);
 256
 257         r = sd_seat_get_active(NULL, &t, NULL);
 258         assert_se(IN_SET(r, 0, -ENODATA, -ENXIO));
 259         log_info("sd_seat_get_active(NULL, …) (active session on current seat) → %s / \"%s\"", e(r), strnull(t));
 260         free(t);
 261
 262         r = sd_get_sessions(&sessions);
 263         assert_se(r >= 0);
 264         assert_se(r == (int) strv_length(sessions));
 265         assert_se(t = strv_join(sessions, ", "));
 266         strv_free(sessions);
 267         log_info("sd_get_sessions(…) → [%i] \"%s\"", r, t);
 268         free(t);
 269
 270         assert_se(sd_get_sessions(NULL) == r);
 271
 272         {
 273                 _cleanup_free_ uid_t *uids = NULL;
 274                 _cleanup_free_ char *buf = NULL;
 275
 276                 r = sd_get_uids(&uids);
 277                 assert_se(r >= 0);
 278                 log_info("sd_get_uids(…) → [%i] {%s}", r, format_uids(&buf, uids, r));
 279
 280                 assert_se(sd_get_uids(NULL) == r);
 281         }
 282
 283         {
 284                 _cleanup_strv_free_ char **machines = NULL;
 285                 _cleanup_free_ char *buf = NULL;
 286
 287                 r = sd_get_machine_names(&machines);
 288                 assert_se(r >= 0);
 289                 assert_se(r == (int) strv_length(machines));
 290                 assert_se(buf = strv_join(machines, " "));
 291                 log_info("sd_get_machines(…) → [%i] \"%s\"", r, buf);
 292
 293                 assert_se(sd_get_machine_names(NULL) == r);
 294         }
 295 }
 296
 297 TEST(monitor) {
 298         sd_login_monitor *m = NULL;
 299         int r;
 300
 301         if (!streq_ptr(saved_argv[1], "-m"))
 302                 return;
 303
 304         assert_se(sd_login_monitor_new("session", &m) == 0);
 305
 306         for (unsigned n = 0; n < 5; n++) {
 307                 struct pollfd pollfd = {};
 308                 usec_t timeout, nw;
 309
 310                 assert_se((pollfd.fd = sd_login_monitor_get_fd(m)) >= 0);
 311                 assert_se((pollfd.events = sd_login_monitor_get_events(m)) >= 0);
 312
 313                 assert_se(sd_login_monitor_get_timeout(m, &timeout) >= 0);
 314
 315                 nw = now(CLOCK_MONOTONIC);
 316
 317                 r = poll(&pollfd, 1,
 318                          timeout == UINT64_MAX ? -1 :
 319                          timeout > nw ? (int) ((timeout - nw) / 1000) :
 320                          0);
 321
 322                 assert_se(r >= 0);
 323
 324                 sd_login_monitor_flush(m);
 325                 printf("Wake!\n");
 326         }
 327
 328         sd_login_monitor_unref(m);
 329 }
 330
 331 static int intro(void) {
 332         if (IN_SET(cg_unified(), -ENOENT, -ENOMEDIUM))
 333                 return log_tests_skipped("cgroupfs is not mounted");
 334
 335         log_info("/* Information printed is from the live system */");
 336         return EXIT_SUCCESS;
 337 }
 338
 339 DEFINE_TEST_MAIN_WITH_INTRO(LOG_INFO, intro);