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

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <poll.h>
   4
   5 #include "sd-login.h"
   6
   7 #include "alloc-util.h"
   8 #include "errno-list.h"
   9 #include "fd-util.h"
  10 #include "format-util.h"
  11 #include "log.h"
  12 #include "string-util.h"
  13 #include "strv.h"
  14 #include "time-util.h"
  15 #include "user-util.h"
  16
  17 static char* format_uids(char **buf, uid_t* uids, int count) {
  18         int pos = 0, inc;
  19         size_t size = (DECIMAL_STR_MAX(uid_t) + 1) * count + 1;
  20
  21         assert_se(*buf = malloc(size));
  22
  23         for (int k = 0; k < count; k++) {
  24                 sprintf(*buf + pos, "%s"UID_FMT"%n", k > 0 ? " " : "", uids[k], &inc);
  25                 pos += inc;
  26         }
  27
  28         assert_se(pos < (ssize_t)size);
  29         (*buf)[pos] = '\0';
  30
  31         return *buf;
  32 }
  33
  34 static const char *e(int r) {
  35         return r == 0 ? "OK" : errno_to_name(r);
  36 }
  37
  38 static void test_login(void) {
  39         _cleanup_close_pair_ int pair[2] = { -1, -1 };
  40         _cleanup_free_ char *pp = NULL, *qq = NULL,
  41                 *display_session = NULL, *cgroup = NULL,
  42                 *display = NULL, *remote_user = NULL, *remote_host = NULL,
  43                 *type = NULL, *class = NULL, *state = NULL, *state2 = NULL,
  44                 *seat = NULL, *session = NULL,
  45                 *unit = NULL, *user_unit = NULL, *slice = NULL;
  46         int r;
  47         uid_t u, u2 = UID_INVALID;
  48         char *t, **seats = NULL, **sessions = NULL;
  49
  50         r = sd_pid_get_unit(0, &unit);
  51         log_info("sd_pid_get_unit(0, …) → %s / \"%s\"", e(r), strnull(unit));
  52         assert_se(IN_SET(r, 0, -ENODATA));
  53
  54         r = sd_pid_get_user_unit(0, &user_unit);
  55         log_info("sd_pid_get_user_unit(0, …) → %s / \"%s\"", e(r), strnull(user_unit));
  56         assert_se(IN_SET(r, 0, -ENODATA));
  57
  58         r = sd_pid_get_slice(0, &slice);
  59         log_info("sd_pid_get_slice(0, …) → %s / \"%s\"", e(r), strnull(slice));
  60         assert_se(IN_SET(r, 0, -ENODATA));
  61
  62         r = sd_pid_get_owner_uid(0, &u2);
  63         log_info("sd_pid_get_owner_uid(0, …) → %s / "UID_FMT, e(r), u2);
  64         assert_se(IN_SET(r, 0, -ENODATA));
  65
  66         r = sd_pid_get_session(0, &session);
  67         log_info("sd_pid_get_session(0, …) → %s / \"%s\"", e(r), strnull(session));
  68
  69         r = sd_pid_get_cgroup(0, &cgroup);
  70         log_info("sd_pid_get_cgroup(0, …) → %s / \"%s\"", e(r), strnull(cgroup));
  71         assert_se(IN_SET(r, 0, -ENOMEDIUM));
  72
  73         r = sd_uid_get_display(u2, &display_session);
  74         log_info("sd_uid_get_display("UID_FMT", …) → %s / \"%s\"", u2, e(r), strnull(display_session));
  75         if (u2 == UID_INVALID)
  76                 assert_se(r == -EINVAL);
  77         else
  78                 assert_se(IN_SET(r, 0, -ENODATA));
  79
  80         assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == 0);
  81         sd_peer_get_session(pair[0], &pp);
  82         sd_peer_get_session(pair[1], &qq);
  83         assert_se(streq_ptr(pp, qq));
  84
  85         r = sd_uid_get_sessions(u2, false, &sessions);
  86         assert_se(t = strv_join(sessions, " "));
  87         log_info("sd_uid_get_sessions("UID_FMT", …) → %s \"%s\"", u2, e(r), t);
  88         if (u2 == UID_INVALID)
  89                 assert_se(r == -EINVAL);
  90         else {
  91                 assert_se(r >= 0);
  92                 assert_se(r == (int) strv_length(sessions));
  93         }
  94         sessions = strv_free(sessions);
  95         free(t);
  96
  97         assert_se(r == sd_uid_get_sessions(u2, false, NULL));
  98
  99         r = sd_uid_get_seats(u2, false, &seats);
 100         assert_se(t = strv_join(seats, " "));
 101         log_info("sd_uid_get_seats("UID_FMT", …) → %s \"%s\"", u2, e(r), t);
 102         if (u2 == UID_INVALID)
 103                 assert_se(r == -EINVAL);
 104         else {
 105                 assert_se(r >= 0);
 106                 assert_se(r == (int) strv_length(seats));
 107         }
 108         seats = strv_free(seats);
 109         free(t);
 110
 111         assert_se(r == sd_uid_get_seats(u2, false, NULL));
 112
 113         if (session) {
 114                 r = sd_session_is_active(session);
 115                 if (r == -ENXIO)
 116                         log_notice("sd_session_is_active() failed with ENXIO, it seems logind is not running.");
 117                 else {
 118                         /* All those tests will fail with ENXIO, so let's skip them. */
 119
 120                         assert_se(r >= 0);
 121                         log_info("sd_session_is_active(\"%s\") → %s", session, yes_no(r));
 122
 123                         r = sd_session_is_remote(session);
 124                         assert_se(r >= 0);
 125                         log_info("sd_session_is_remote(\"%s\") → %s", session, yes_no(r));
 126
 127                         r = sd_session_get_state(session, &state);
 128                         assert_se(r == 0);
 129                         log_info("sd_session_get_state(\"%s\") → \"%s\"", session, state);
 130
 131                         assert_se(sd_session_get_uid(session, &u) >= 0);
 132                         log_info("sd_session_get_uid(\"%s\") → "UID_FMT, session, u);
 133                         assert_se(u == u2);
 134
 135                         assert_se(sd_session_get_type(session, &type) >= 0);
 136                         log_info("sd_session_get_type(\"%s\") → \"%s\"", session, type);
 137
 138                         assert_se(sd_session_get_class(session, &class) >= 0);
 139                         log_info("sd_session_get_class(\"%s\") → \"%s\"", session, class);
 140
 141                         r = sd_session_get_display(session, &display);
 142                         assert_se(IN_SET(r, 0, -ENODATA));
 143                         log_info("sd_session_get_display(\"%s\") → \"%s\"", session, strna(display));
 144
 145                         r = sd_session_get_remote_user(session, &remote_user);
 146                         assert_se(IN_SET(r, 0, -ENODATA));
 147                         log_info("sd_session_get_remote_user(\"%s\") → \"%s\"",
 148                                  session, strna(remote_user));
 149
 150                         r = sd_session_get_remote_host(session, &remote_host);
 151                         assert_se(IN_SET(r, 0, -ENODATA));
 152                         log_info("sd_session_get_remote_host(\"%s\") → \"%s\"",
 153                                  session, strna(remote_host));
 154
 155                         r = sd_session_get_seat(session, &seat);
 156                         if (r >= 0) {
 157                                 assert_se(seat);
 158
 159                                 log_info("sd_session_get_seat(\"%s\") → \"%s\"", session, seat);
 160
 161 #pragma GCC diagnostic push
 162 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 163                                 r = sd_seat_can_multi_session(seat);
 164 #pragma GCC diagnostic pop
 165                                 assert_se(r == 1);
 166                                 log_info("sd_session_can_multi_seat(\"%s\") → %s", seat, yes_no(r));
 167
 168                                 r = sd_seat_can_tty(seat);
 169                                 assert_se(r >= 0);
 170                                 log_info("sd_session_can_tty(\"%s\") → %s", seat, yes_no(r));
 171
 172                                 r = sd_seat_can_graphical(seat);
 173                                 assert_se(r >= 0);
 174                                 log_info("sd_session_can_graphical(\"%s\") → %s", seat, yes_no(r));
 175                         } else {
 176                                 log_info_errno(r, "sd_session_get_seat(\"%s\"): %m", session);
 177                                 assert_se(r == -ENODATA);
 178                         }
 179
 180                         assert_se(sd_uid_get_state(u, &state2) == 0);
 181                         log_info("sd_uid_get_state("UID_FMT", …) → %s", u, state2);
 182                 }
 183         }
 184
 185         if (seat) {
 186                 _cleanup_free_ char *session2 = NULL, *buf = NULL;
 187                 _cleanup_free_ uid_t *uids = NULL;
 188                 unsigned n;
 189
 190                 assert_se(sd_uid_is_on_seat(u, 0, seat) > 0);
 191
 192                 r = sd_seat_get_active(seat, &session2, &u2);
 193                 assert_se(r == 0);
 194                 log_info("sd_seat_get_active(\"%s\", …) → \"%s\", "UID_FMT, seat, session2, u2);
 195
 196                 r = sd_uid_is_on_seat(u, 1, seat);
 197                 assert_se(IN_SET(r, 0, 1));
 198                 assert_se(!!r == streq(session, session2));
 199
 200                 r = sd_seat_get_sessions(seat, &sessions, &uids, &n);
 201                 assert_se(r >= 0);
 202                 assert_se(r == (int) strv_length(sessions));
 203                 assert_se(t = strv_join(sessions, " "));
 204                 strv_free(sessions);
 205                 log_info("sd_seat_get_sessions(\"%s\", …) → %s, \"%s\", [%u] {%s}",
 206                          seat, e(r), t, n, format_uids(&buf, uids, n));
 207                 free(t);
 208
 209                 assert_se(sd_seat_get_sessions(seat, NULL, NULL, NULL) == r);
 210         }
 211
 212         r = sd_get_seats(&seats);
 213         assert_se(r >= 0);
 214         assert_se(r == (int) strv_length(seats));
 215         assert_se(t = strv_join(seats, ", "));
 216         strv_free(seats);
 217         log_info("sd_get_seats(…) → [%i] \"%s\"", r, t);
 218         t = mfree(t);
 219
 220         assert_se(sd_get_seats(NULL) == r);
 221
 222         r = sd_seat_get_active(NULL, &t, NULL);
 223         assert_se(IN_SET(r, 0, -ENODATA, -ENXIO));
 224         log_info("sd_seat_get_active(NULL, …) (active session on current seat) → %s / \"%s\"", e(r), strnull(t));
 225         free(t);
 226
 227         r = sd_get_sessions(&sessions);
 228         assert_se(r >= 0);
 229         assert_se(r == (int) strv_length(sessions));
 230         assert_se(t = strv_join(sessions, ", "));
 231         strv_free(sessions);
 232         log_info("sd_get_sessions(…) → [%i] \"%s\"", r, t);
 233         free(t);
 234
 235         assert_se(sd_get_sessions(NULL) == r);
 236
 237         {
 238                 _cleanup_free_ uid_t *uids = NULL;
 239                 _cleanup_free_ char *buf = NULL;
 240
 241                 r = sd_get_uids(&uids);
 242                 assert_se(r >= 0);
 243                 log_info("sd_get_uids(…) → [%i] {%s}", r, format_uids(&buf, uids, r));
 244
 245                 assert_se(sd_get_uids(NULL) == r);
 246         }
 247
 248         {
 249                 _cleanup_strv_free_ char **machines = NULL;
 250                 _cleanup_free_ char *buf = NULL;
 251
 252                 r = sd_get_machine_names(&machines);
 253                 assert_se(r >= 0);
 254                 assert_se(r == (int) strv_length(machines));
 255                 assert_se(buf = strv_join(machines, " "));
 256                 log_info("sd_get_machines(…) → [%i] \"%s\"", r, buf);
 257
 258                 assert_se(sd_get_machine_names(NULL) == r);
 259         }
 260 }
 261
 262 static void test_monitor(void) {
 263         sd_login_monitor *m = NULL;
 264         int r;
 265
 266         assert_se(sd_login_monitor_new("session", &m) == 0);
 267
 268         for (unsigned n = 0; n < 5; n++) {
 269                 struct pollfd pollfd = {};
 270                 usec_t timeout, nw;
 271
 272                 assert_se((pollfd.fd = sd_login_monitor_get_fd(m)) >= 0);
 273                 assert_se((pollfd.events = sd_login_monitor_get_events(m)) >= 0);
 274
 275                 assert_se(sd_login_monitor_get_timeout(m, &timeout) >= 0);
 276
 277                 nw = now(CLOCK_MONOTONIC);
 278
 279                 r = poll(&pollfd, 1,
 280                          timeout == (uint64_t) -1 ? -1 :
 281                          timeout > nw ? (int) ((timeout - nw) / 1000) :
 282                          0);
 283
 284                 assert_se(r >= 0);
 285
 286                 sd_login_monitor_flush(m);
 287                 printf("Wake!\n");
 288         }
 289
 290         sd_login_monitor_unref(m);
 291 }
 292
 293 int main(int argc, char* argv[]) {
 294         log_parse_environment();
 295         log_open();
 296
 297         log_info("/* Information printed is from the live system */");
 298
 299         test_login();
 300
 301         if (streq_ptr(argv[1], "-m"))
 302                 test_monitor();
 303
 304         return 0;
 305 }