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

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2011 Lennart Poettering
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <poll.h>
  21 #include <string.h>
  22
  23 #include "sd-login.h"
  24
  25 #include "alloc-util.h"
  26 #include "fd-util.h"
  27 #include "format-util.h"
  28 #include "log.h"
  29 #include "string-util.h"
  30 #include "strv.h"
  31 #include "util.h"
  32
  33 /// Additional includes needed by elogind
  34 #include "musl_missing.h"
  35 static char* format_uids(char **buf, uid_t* uids, int count) {
  36         int pos = 0, k, inc;
  37         size_t size = (DECIMAL_STR_MAX(uid_t) + 1) * count + 1;
  38
  39         assert_se(*buf = malloc(size));
  40
  41         for (k = 0; k < count; k++) {
  42                 sprintf(*buf + pos, "%s"UID_FMT"%n", k > 0 ? " " : "", uids[k], &inc);
  43                 pos += inc;
  44         }
  45
  46         assert_se(pos < (ssize_t)size);
  47         (*buf)[pos] = '\0';
  48
  49         return *buf;
  50 }
  51
  52 static void test_login(void) {
  53         _cleanup_close_pair_ int pair[2] = { -1, -1 };
  54         _cleanup_free_ char *pp = NULL, *qq = NULL,
  55                 *display_session = NULL, *cgroup = NULL,
  56                 *display = NULL, *remote_user = NULL, *remote_host = NULL,
  57                 *type = NULL, *class = NULL, *state = NULL, *state2 = NULL,
  58                 *seat = NULL, *session = NULL,
  59                 *unit = NULL, *user_unit = NULL, *slice = NULL;
  60         int r, k;
  61         uid_t u, u2;
  62         char *t, **seats, **sessions;
  63
  64         r = sd_pid_get_unit(0, &unit);
  65         assert_se(r >= 0 || r == -ENODATA);
  66         log_info("sd_pid_get_unit(0, …) → \"%s\"", unit);
  67
  68         r = sd_pid_get_user_unit(0, &user_unit);
  69         assert_se(r >= 0 || r == -ENODATA);
  70         log_info("sd_pid_get_user_unit(0, …) → \"%s\"", user_unit);
  71
  72         assert_se(sd_pid_get_slice(0, &slice) >= 0);
  73         log_info("sd_pid_get_slice(0, …) → \"%s\"", slice);
  74
  75         r = sd_pid_get_session(0, &session);
  76         if (r < 0) {
  77                 log_warning_errno(r, "sd_pid_get_session(0, …): %m");
  78                 if (r == -ENODATA)
  79                         log_info("Seems we are not running in a session, skipping some tests.");
  80         } else {
  81                 log_info("sd_pid_get_session(0, …) → \"%s\"", session);
  82
  83                 assert_se(sd_pid_get_owner_uid(0, &u2) == 0);
  84                 log_info("sd_pid_get_owner_uid(0, …) → "UID_FMT, u2);
  85
  86                 assert_se(sd_pid_get_cgroup(0, &cgroup) == 0);
  87                 log_info("sd_pid_get_cgroup(0, …) → \"%s\"", cgroup);
  88
  89                 r = sd_uid_get_display(u2, &display_session);
  90                 assert_se(r >= 0 || r == -ENODATA);
  91                 log_info("sd_uid_get_display("UID_FMT", …) → \"%s\"",
  92                          u2, strnull(display_session));
  93
  94                 assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == 0);
  95                 sd_peer_get_session(pair[0], &pp);
  96                 sd_peer_get_session(pair[1], &qq);
  97                 assert_se(streq_ptr(pp, qq));
  98
  99                 r = sd_uid_get_sessions(u2, false, &sessions);
 100                 assert_se(r >= 0);
 101                 assert_se(r == (int) strv_length(sessions));
 102                 assert_se(t = strv_join(sessions, " "));
 103                 strv_free(sessions);
 104                 log_info("sd_uid_get_sessions("UID_FMT", …) → [%i] \"%s\"", u2, r, t);
 105                 free(t);
 106
 107                 assert_se(r == sd_uid_get_sessions(u2, false, NULL));
 108
 109                 r = sd_uid_get_seats(u2, false, &seats);
 110                 assert_se(r >= 0);
 111                 assert_se(r == (int) strv_length(seats));
 112                 assert_se(t = strv_join(seats, " "));
 113                 strv_free(seats);
 114                 log_info("sd_uid_get_seats("UID_FMT", …) → [%i] \"%s\"", u2, r, t);
 115                 free(t);
 116
 117                 assert_se(r == sd_uid_get_seats(u2, false, NULL));
 118         }
 119
 120         if (session) {
 121                 r = sd_session_is_active(session);
 122                 assert_se(r >= 0);
 123                 log_info("sd_session_is_active(\"%s\") → %s", session, yes_no(r));
 124
 125                 r = sd_session_is_remote(session);
 126                 assert_se(r >= 0);
 127                 log_info("sd_session_is_remote(\"%s\") → %s", session, yes_no(r));
 128
 129                 r = sd_session_get_state(session, &state);
 130                 assert_se(r >= 0);
 131                 log_info("sd_session_get_state(\"%s\") → \"%s\"", session, state);
 132
 133                 assert_se(sd_session_get_uid(session, &u) >= 0);
 134                 log_info("sd_session_get_uid(\"%s\") → "UID_FMT, session, u);
 135                 assert_se(u == u2);
 136
 137                 assert_se(sd_session_get_type(session, &type) >= 0);
 138                 log_info("sd_session_get_type(\"%s\") → \"%s\"", session, type);
 139
 140                 assert_se(sd_session_get_class(session, &class) >= 0);
 141                 log_info("sd_session_get_class(\"%s\") → \"%s\"", session, class);
 142
 143                 r = sd_session_get_display(session, &display);
 144                 assert_se(r >= 0 || r == -ENODATA);
 145                 log_info("sd_session_get_display(\"%s\") → \"%s\"", session, strna(display));
 146
 147                 r = sd_session_get_remote_user(session, &remote_user);
 148                 assert_se(r >= 0 || r == -ENODATA);
 149                 log_info("sd_session_get_remote_user(\"%s\") → \"%s\"",
 150                          session, strna(remote_user));
 151
 152                 r = sd_session_get_remote_host(session, &remote_host);
 153                 assert_se(r >= 0 || r == -ENODATA);
 154                 log_info("sd_session_get_remote_host(\"%s\") → \"%s\"",
 155                          session, strna(remote_host));
 156
 157                 r = sd_session_get_seat(session, &seat);
 158                 if (r >= 0) {
 159                         assert_se(seat);
 160
 161                         log_info("sd_session_get_display(\"%s\") → \"%s\"", session, seat);
 162
 163                         r = sd_seat_can_multi_session(seat);
 164                         assert_se(r >= 0);
 165                         log_info("sd_session_can_multi_seat(\"%s\") → %s", seat, yes_no(r));
 166
 167                         r = sd_seat_can_tty(seat);
 168                         assert_se(r >= 0);
 169                         log_info("sd_session_can_tty(\"%s\") → %s", seat, yes_no(r));
 170
 171                         r = sd_seat_can_graphical(seat);
 172                         assert_se(r >= 0);
 173                         log_info("sd_session_can_graphical(\"%s\") → %s", seat, yes_no(r));
 174                 } else {
 175                         log_info_errno(r, "sd_session_get_display(\"%s\"): %m", session);
 176                         assert_se(r == -ENODATA);
 177                 }
 178
 179                 assert_se(sd_uid_get_state(u, &state2) >= 0);
 180                 log_info("sd_uid_get_state("UID_FMT", …) → %s", u, state2);
 181         }
 182
 183         if (seat) {
 184                 _cleanup_free_ char *session2 = NULL, *buf = NULL;
 185                 _cleanup_free_ uid_t *uids = NULL;
 186                 unsigned n;
 187
 188                 assert_se(sd_uid_is_on_seat(u, 0, seat) > 0);
 189
 190                 k = sd_uid_is_on_seat(u, 1, seat);
 191                 assert_se(k >= 0);
 192                 assert_se(!!k == !!r);
 193
 194                 assert_se(sd_seat_get_active(seat, &session2, &u2) >= 0);
 195                 log_info("sd_seat_get_active(\"%s\", …) → \"%s\", "UID_FMT, seat, session2, u2);
 196
 197                 r = sd_seat_get_sessions(seat, &sessions, &uids, &n);
 198                 assert_se(r >= 0);
 199                 assert_se(r == (int) strv_length(sessions));
 200                 assert_se(t = strv_join(sessions, " "));
 201                 strv_free(sessions);
 202                 log_info("sd_seat_get_sessions(\"%s\", …) → %i, \"%s\", [%i] {%s}",
 203                          seat, r, t, n, format_uids(&buf, uids, n));
 204                 free(t);
 205
 206                 assert_se(sd_seat_get_sessions(seat, NULL, NULL, NULL) == r);
 207         }
 208
 209         r = sd_get_seats(&seats);
 210         assert_se(r >= 0);
 211         assert_se(r == (int) strv_length(seats));
 212         assert_se(t = strv_join(seats, ", "));
 213         strv_free(seats);
 214         log_info("sd_get_seats(…) → [%i] \"%s\"", r, t);
 215         t = mfree(t);
 216
 217         assert_se(sd_get_seats(NULL) == r);
 218
 219         r = sd_seat_get_active(NULL, &t, NULL);
 220         assert_se(IN_SET(r, 0, -ENODATA));
 221         log_info("sd_seat_get_active(NULL, …) (active session on current seat) → %s", strnull(t));
 222         free(t);
 223
 224         r = sd_get_sessions(&sessions);
 225         assert_se(r >= 0);
 226         assert_se(r == (int) strv_length(sessions));
 227         assert_se(t = strv_join(sessions, ", "));
 228         strv_free(sessions);
 229         log_info("sd_get_sessions(…) → [%i] \"%s\"", r, t);
 230         free(t);
 231
 232         assert_se(sd_get_sessions(NULL) == r);
 233
 234         {
 235                 _cleanup_free_ uid_t *uids = NULL;
 236                 _cleanup_free_ char *buf = NULL;
 237
 238                 r = sd_get_uids(&uids);
 239                 assert_se(r >= 0);
 240                 log_info("sd_get_uids(…) → [%i] {%s}", r, format_uids(&buf, uids, r));
 241
 242                 assert_se(sd_get_uids(NULL) == r);
 243         }
 244
 245         {
 246                 _cleanup_strv_free_ char **machines = NULL;
 247                 _cleanup_free_ char *buf = NULL;
 248
 249                 r = sd_get_machine_names(&machines);
 250                 assert_se(r >= 0);
 251                 assert_se(r == (int) strv_length(machines));
 252                 assert_se(buf = strv_join(machines, " "));
 253
 254                 log_info("sd_get_machines(…) → [%i] \"%s\"", r, buf);
 255         }
 256 }
 257
 258 static void test_monitor(void) {
 259         sd_login_monitor *m = NULL;
 260         unsigned n;
 261         int r;
 262
 263         r = sd_login_monitor_new("session", &m);
 264         assert_se(r >= 0);
 265
 266         for (n = 0; n < 5; n++) {
 267                 struct pollfd pollfd = {};
 268                 usec_t timeout, nw;
 269
 270                 assert_se((pollfd.fd = sd_login_monitor_get_fd(m)) >= 0);
 271                 assert_se((pollfd.events = sd_login_monitor_get_events(m)) >= 0);
 272
 273                 assert_se(sd_login_monitor_get_timeout(m, &timeout) >= 0);
 274
 275                 nw = now(CLOCK_MONOTONIC);
 276
 277                 r = poll(&pollfd, 1,
 278                          timeout == (uint64_t) -1 ? -1 :
 279                          timeout > nw ? (int) ((timeout - nw) / 1000) :
 280                          0);
 281
 282                 assert_se(r >= 0);
 283
 284                 sd_login_monitor_flush(m);
 285                 printf("Wake!\n");
 286         }
 287
 288         sd_login_monitor_unref(m);
 289 }
 290
 291 int main(int argc, char* argv[]) {
 292         log_parse_environment();
 293         log_open();
 294
 295         log_info("/* Information printed is from the live system */");
 296
 297         test_login();
 298
 299         if (streq_ptr(argv[1], "-m"))
 300                 test_monitor();
 301
 302         return 0;
 303 }