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

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   Copyright 2011 Lennart Poettering
   4 ***/
   5
   6 #include <poll.h>
   7 #include <string.h>
   8
   9 #include "sd-login.h"
  10
  11 #include "alloc-util.h"
  12 #include "fd-util.h"
  13 #include "format-util.h"
  14 #include "log.h"
  15 #include "string-util.h"
  16 #include "strv.h"
  17 #include "util.h"
  18
  19 /// Additional includes needed by elogind
  20 #include "musl_missing.h"
  21 static char* format_uids(char **buf, uid_t* uids, int count) {
  22         int pos = 0, k, inc;
  23         size_t size = (DECIMAL_STR_MAX(uid_t) + 1) * count + 1;
  24
  25         assert_se(*buf = malloc(size));
  26
  27         for (k = 0; k < count; k++) {
  28                 sprintf(*buf + pos, "%s"UID_FMT"%n", k > 0 ? " " : "", uids[k], &inc);
  29                 pos += inc;
  30         }
  31
  32         assert_se(pos < (ssize_t)size);
  33         (*buf)[pos] = '\0';
  34
  35         return *buf;
  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;
  48         char *t, **seats, **sessions;
  49
  50 #if 0 /// elogind does not support systemd units
  51         r = sd_pid_get_unit(0, &unit);
  52         assert_se(r >= 0 || r == -ENODATA);
  53         log_info("sd_pid_get_unit(0, …) → \"%s\"", strna(unit));
  54
  55         r = sd_pid_get_user_unit(0, &user_unit);
  56         assert_se(r >= 0 || r == -ENODATA);
  57         log_info("sd_pid_get_user_unit(0, …) → \"%s\"", strna(user_unit));
  58 #endif // 0
  59
  60         r = sd_pid_get_slice(0, &slice);
  61         assert_se(r >= 0 || r == -ENODATA);
  62         log_info("sd_pid_get_slice(0, …) → \"%s\"", strna(slice));
  63
  64         r = sd_pid_get_session(0, &session);
  65         if (r < 0) {
  66                 log_warning_errno(r, "sd_pid_get_session(0, …): %m");
  67                 if (r == -ENODATA)
  68                         log_info("Seems we are not running in a session, skipping some tests.");
  69         } else {
  70                 log_info("sd_pid_get_session(0, …) → \"%s\"", session);
  71
  72                 assert_se(sd_pid_get_owner_uid(0, &u2) == 0);
  73                 log_info("sd_pid_get_owner_uid(0, …) → "UID_FMT, u2);
  74
  75                 assert_se(sd_pid_get_cgroup(0, &cgroup) == 0);
  76                 log_info("sd_pid_get_cgroup(0, …) → \"%s\"", cgroup);
  77
  78                 r = sd_uid_get_display(u2, &display_session);
  79                 assert_se(r >= 0 || r == -ENODATA);
  80                 log_info("sd_uid_get_display("UID_FMT", …) → \"%s\"",
  81                          u2, strnull(display_session));
  82
  83                 assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == 0);
  84                 sd_peer_get_session(pair[0], &pp);
  85                 sd_peer_get_session(pair[1], &qq);
  86                 assert_se(streq_ptr(pp, qq));
  87
  88                 r = sd_uid_get_sessions(u2, false, &sessions);
  89                 assert_se(r >= 0);
  90                 assert_se(r == (int) strv_length(sessions));
  91                 assert_se(t = strv_join(sessions, " "));
  92                 strv_free(sessions);
  93                 log_info("sd_uid_get_sessions("UID_FMT", …) → [%i] \"%s\"", u2, r, t);
  94                 free(t);
  95
  96                 assert_se(r == sd_uid_get_sessions(u2, false, NULL));
  97
  98                 r = sd_uid_get_seats(u2, false, &seats);
  99                 assert_se(r >= 0);
 100                 assert_se(r == (int) strv_length(seats));
 101                 assert_se(t = strv_join(seats, " "));
 102                 strv_free(seats);
 103                 log_info("sd_uid_get_seats("UID_FMT", …) → [%i] \"%s\"", u2, r, t);
 104                 free(t);
 105
 106                 assert_se(r == sd_uid_get_seats(u2, false, NULL));
 107         }
 108
 109         if (session) {
 110                 r = sd_session_is_active(session);
 111                 assert_se(r >= 0);
 112                 log_info("sd_session_is_active(\"%s\") → %s", session, yes_no(r));
 113
 114                 r = sd_session_is_remote(session);
 115                 assert_se(r >= 0);
 116                 log_info("sd_session_is_remote(\"%s\") → %s", session, yes_no(r));
 117
 118                 r = sd_session_get_state(session, &state);
 119                 assert_se(r >= 0);
 120                 log_info("sd_session_get_state(\"%s\") → \"%s\"", session, state);
 121
 122                 assert_se(sd_session_get_uid(session, &u) >= 0);
 123                 log_info("sd_session_get_uid(\"%s\") → "UID_FMT, session, u);
 124                 assert_se(u == u2);
 125
 126                 assert_se(sd_session_get_type(session, &type) >= 0);
 127                 log_info("sd_session_get_type(\"%s\") → \"%s\"", session, type);
 128
 129                 assert_se(sd_session_get_class(session, &class) >= 0);
 130                 log_info("sd_session_get_class(\"%s\") → \"%s\"", session, class);
 131
 132                 r = sd_session_get_display(session, &display);
 133                 assert_se(r >= 0 || r == -ENODATA);
 134                 log_info("sd_session_get_display(\"%s\") → \"%s\"", session, strna(display));
 135
 136                 r = sd_session_get_remote_user(session, &remote_user);
 137                 assert_se(r >= 0 || r == -ENODATA);
 138                 log_info("sd_session_get_remote_user(\"%s\") → \"%s\"",
 139                          session, strna(remote_user));
 140
 141                 r = sd_session_get_remote_host(session, &remote_host);
 142                 assert_se(r >= 0 || r == -ENODATA);
 143                 log_info("sd_session_get_remote_host(\"%s\") → \"%s\"",
 144                          session, strna(remote_host));
 145
 146                 r = sd_session_get_seat(session, &seat);
 147                 if (r >= 0) {
 148                         assert_se(seat);
 149
 150                         log_info("sd_session_get_seat(\"%s\") → \"%s\"", session, seat);
 151
 152                         r = sd_seat_can_multi_session(seat);
 153                         assert_se(r >= 0);
 154                         log_info("sd_session_can_multi_seat(\"%s\") → %s", seat, yes_no(r));
 155
 156                         r = sd_seat_can_tty(seat);
 157                         assert_se(r >= 0);
 158                         log_info("sd_session_can_tty(\"%s\") → %s", seat, yes_no(r));
 159
 160                         r = sd_seat_can_graphical(seat);
 161                         assert_se(r >= 0);
 162                         log_info("sd_session_can_graphical(\"%s\") → %s", seat, yes_no(r));
 163                 } else {
 164                         log_info_errno(r, "sd_session_get_seat(\"%s\"): %m", session);
 165                         assert_se(r == -ENODATA);
 166                 }
 167
 168                 assert_se(sd_uid_get_state(u, &state2) >= 0);
 169                 log_info("sd_uid_get_state("UID_FMT", …) → %s", u, state2);
 170         }
 171
 172         if (seat) {
 173                 _cleanup_free_ char *session2 = NULL, *buf = NULL;
 174                 _cleanup_free_ uid_t *uids = NULL;
 175                 unsigned n;
 176
 177                 assert_se(sd_uid_is_on_seat(u, 0, seat) > 0);
 178
 179                 r = sd_seat_get_active(seat, &session2, &u2);
 180                 assert_se(r >= 0);
 181                 log_info("sd_seat_get_active(\"%s\", …) → \"%s\", "UID_FMT, seat, session2, u2);
 182
 183                 r = sd_uid_is_on_seat(u, 1, seat);
 184                 assert_se(r >= 0);
 185                 assert_se(!!r == streq(session, session2));
 186
 187                 r = sd_seat_get_sessions(seat, &sessions, &uids, &n);
 188                 assert_se(r >= 0);
 189                 assert_se(r == (int) strv_length(sessions));
 190                 assert_se(t = strv_join(sessions, " "));
 191                 strv_free(sessions);
 192                 log_info("sd_seat_get_sessions(\"%s\", …) → %i, \"%s\", [%i] {%s}",
 193                          seat, r, t, n, format_uids(&buf, uids, n));
 194                 free(t);
 195
 196                 assert_se(sd_seat_get_sessions(seat, NULL, NULL, NULL) == r);
 197         }
 198
 199         r = sd_get_seats(&seats);
 200         assert_se(r >= 0);
 201         assert_se(r == (int) strv_length(seats));
 202         assert_se(t = strv_join(seats, ", "));
 203         strv_free(seats);
 204         log_info("sd_get_seats(…) → [%i] \"%s\"", r, t);
 205         t = mfree(t);
 206
 207         assert_se(sd_get_seats(NULL) == r);
 208
 209         r = sd_seat_get_active(NULL, &t, NULL);
 210         assert_se(IN_SET(r, 0, -ENODATA));
 211         log_info("sd_seat_get_active(NULL, …) (active session on current seat) → %s", strnull(t));
 212         free(t);
 213
 214         r = sd_get_sessions(&sessions);
 215         assert_se(r >= 0);
 216         assert_se(r == (int) strv_length(sessions));
 217         assert_se(t = strv_join(sessions, ", "));
 218         strv_free(sessions);
 219         log_info("sd_get_sessions(…) → [%i] \"%s\"", r, t);
 220         free(t);
 221
 222         assert_se(sd_get_sessions(NULL) == r);
 223
 224         {
 225                 _cleanup_free_ uid_t *uids = NULL;
 226                 _cleanup_free_ char *buf = NULL;
 227
 228                 r = sd_get_uids(&uids);
 229                 assert_se(r >= 0);
 230                 log_info("sd_get_uids(…) → [%i] {%s}", r, format_uids(&buf, uids, r));
 231
 232                 assert_se(sd_get_uids(NULL) == r);
 233         }
 234
 235         {
 236                 _cleanup_strv_free_ char **machines = NULL;
 237                 _cleanup_free_ char *buf = NULL;
 238
 239                 r = sd_get_machine_names(&machines);
 240                 assert_se(r >= 0);
 241                 assert_se(r == (int) strv_length(machines));
 242                 assert_se(buf = strv_join(machines, " "));
 243                 log_info("sd_get_machines(…) → [%i] \"%s\"", r, buf);
 244
 245                 assert_se(sd_get_machine_names(NULL) == r);
 246         }
 247 }
 248
 249 static void test_monitor(void) {
 250         sd_login_monitor *m = NULL;
 251         unsigned n;
 252         int r;
 253
 254         r = sd_login_monitor_new("session", &m);
 255         assert_se(r >= 0);
 256
 257         for (n = 0; n < 5; n++) {
 258                 struct pollfd pollfd = {};
 259                 usec_t timeout, nw;
 260
 261                 assert_se((pollfd.fd = sd_login_monitor_get_fd(m)) >= 0);
 262                 assert_se((pollfd.events = sd_login_monitor_get_events(m)) >= 0);
 263
 264                 assert_se(sd_login_monitor_get_timeout(m, &timeout) >= 0);
 265
 266                 nw = now(CLOCK_MONOTONIC);
 267
 268                 r = poll(&pollfd, 1,
 269                          timeout == (uint64_t) -1 ? -1 :
 270                          timeout > nw ? (int) ((timeout - nw) / 1000) :
 271                          0);
 272
 273                 assert_se(r >= 0);
 274
 275                 sd_login_monitor_flush(m);
 276                 printf("Wake!\n");
 277         }
 278
 279         sd_login_monitor_unref(m);
 280 }
 281
 282 int main(int argc, char* argv[]) {
 283         log_parse_environment();
 284         log_open();
 285
 286         log_info("/* Information printed is from the live system */");
 287
 288         test_login();
 289
 290         if (streq_ptr(argv[1], "-m"))
 291                 test_monitor();
 292
 293         return 0;
 294 }