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

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