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 < 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         assert_se(sd_pid_get_unit(0, &unit) >= 0);
  65         log_info("sd_pid_get_unit(0, …) → \"%s\"", unit);
  66
  67         r = sd_pid_get_user_unit(0, &user_unit);
  68         assert_se(r >= 0 || r == -ENODATA);
  69         log_info("sd_pid_get_user_unit(0, …) → \"%s\"", user_unit);
  70
  71         assert_se(sd_pid_get_slice(0, &slice) >= 0);
  72         log_info("sd_pid_get_slice(0, …) → \"%s\"", slice);
  73
  74         r = sd_pid_get_session(0, &session);
  75         if (r < 0) {
  76                 log_warning_errno(r, "sd_pid_get_session(0, …): %m");
  77                 if (r == -ENODATA)
  78                         log_info("Seems we are not running in a session, skipping some tests.");
  79         } else {
  80                 log_info("sd_pid_get_session(0, …) → \"%s\"", session);
  81
  82                 assert_se(sd_pid_get_owner_uid(0, &u2) == 0);
  83                 log_info("sd_pid_get_owner_uid(0, …) → "UID_FMT, u2);
  84
  85                 assert_se(sd_pid_get_cgroup(0, &cgroup) == 0);
  86                 log_info("sd_pid_get_cgroup(0, …) → \"%s\"", cgroup);
  87
  88                 r = sd_uid_get_display(u2, &display_session);
  89                 assert_se(r >= 0 || r == -ENODATA);
  90                 log_info("sd_uid_get_display("UID_FMT", …) → \"%s\"",
  91                          u2, strnull(display_session));
  92
  93                 assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == 0);
  94                 sd_peer_get_session(pair[0], &pp);
  95                 sd_peer_get_session(pair[1], &qq);
  96                 assert_se(streq_ptr(pp, qq));
  97
  98                 r = sd_uid_get_sessions(u2, false, &sessions);
  99                 assert_se(r >= 0);
 100                 assert_se(r == (int) strv_length(sessions));
 101                 assert_se(t = strv_join(sessions, " "));
 102                 strv_free(sessions);
 103                 log_info("sd_uid_get_sessions("UID_FMT", …) → [%i] \"%s\"", u2, r, t);
 104                 free(t);
 105
 106                 assert_se(r == sd_uid_get_sessions(u2, false, NULL));
 107
 108                 r = sd_uid_get_seats(u2, false, &seats);
 109                 assert_se(r >= 0);
 110                 assert_se(r == (int) strv_length(seats));
 111                 assert_se(t = strv_join(seats, " "));
 112                 strv_free(seats);
 113                 log_info("sd_uid_get_seats("UID_FMT", …) → [%i] \"%s\"", u2, r, t);
 114                 free(t);
 115
 116                 assert_se(r == sd_uid_get_seats(u2, false, NULL));
 117         }
 118
 119         if (session) {
 120                 r = sd_session_is_active(session);
 121                 assert_se(r >= 0);
 122                 log_info("sd_session_is_active(\"%s\") → %s", session, yes_no(r));
 123
 124                 r = sd_session_is_remote(session);
 125                 assert_se(r >= 0);
 126                 log_info("sd_session_is_remote(\"%s\") → %s", session, yes_no(r));
 127
 128                 r = sd_session_get_state(session, &state);
 129                 assert_se(r >= 0);
 130                 log_info("sd_session_get_state(\"%s\") → \"%s\"", session, state);
 131
 132                 assert_se(sd_session_get_uid(session, &u) >= 0);
 133                 log_info("sd_session_get_uid(\"%s\") → "UID_FMT, session, u);
 134                 assert_se(u == u2);
 135
 136                 assert_se(sd_session_get_type(session, &type) >= 0);
 137                 log_info("sd_session_get_type(\"%s\") → \"%s\"", session, type);
 138
 139                 assert_se(sd_session_get_class(session, &class) >= 0);
 140                 log_info("sd_session_get_class(\"%s\") → \"%s\"", session, class);
 141
 142                 r = sd_session_get_display(session, &display);
 143                 assert_se(r >= 0 || r == -ENODATA);
 144                 log_info("sd_session_get_display(\"%s\") → \"%s\"", session, strna(display));
 145
 146                 r = sd_session_get_remote_user(session, &remote_user);
 147                 assert_se(r >= 0 || r == -ENODATA);
 148                 log_info("sd_session_get_remote_user(\"%s\") → \"%s\"",
 149                          session, strna(remote_user));
 150
 151                 r = sd_session_get_remote_host(session, &remote_host);
 152                 assert_se(r >= 0 || r == -ENODATA);
 153                 log_info("sd_session_get_remote_host(\"%s\") → \"%s\"",
 154                          session, strna(remote_host));
 155
 156                 r = sd_session_get_seat(session, &seat);
 157                 if (r >= 0) {
 158                         assert_se(seat);
 159
 160                         log_info("sd_session_get_display(\"%s\") → \"%s\"", session, seat);
 161
 162                         r = sd_seat_can_multi_session(seat);
 163                         assert_se(r >= 0);
 164                         log_info("sd_session_can_multi_seat(\"%s\") → %s", seat, yes_no(r));
 165
 166                         r = sd_seat_can_tty(seat);
 167                         assert_se(r >= 0);
 168                         log_info("sd_session_can_tty(\"%s\") → %s", seat, yes_no(r));
 169
 170                         r = sd_seat_can_graphical(seat);
 171                         assert_se(r >= 0);
 172                         log_info("sd_session_can_graphical(\"%s\") → %s", seat, yes_no(r));
 173                 } else {
 174                         log_info_errno(r, "sd_session_get_display(\"%s\"): %m", session);
 175                         assert_se(r == -ENODATA);
 176                 }
 177
 178                 assert_se(sd_uid_get_state(u, &state2) >= 0);
 179                 log_info("sd_uid_get_state("UID_FMT", …) → %s", u, state2);
 180         }
 181
 182         if (seat) {
 183                 _cleanup_free_ char *session2 = NULL, *buf = NULL;
 184                 _cleanup_free_ uid_t *uids = NULL;
 185                 unsigned n;
 186
 187                 assert_se(sd_uid_is_on_seat(u, 0, seat) > 0);
 188
 189                 k = sd_uid_is_on_seat(u, 1, seat);
 190                 assert_se(k >= 0);
 191                 assert_se(!!k == !!r);
 192
 193                 assert_se(sd_seat_get_active(seat, &session2, &u2) >= 0);
 194                 log_info("sd_seat_get_active(\"%s\", …) → \"%s\", "UID_FMT, seat, session2, u2);
 195
 196                 r = sd_seat_get_sessions(seat, &sessions, &uids, &n);
 197                 assert_se(r >= 0);
 198                 assert_se(r == (int) strv_length(sessions));
 199                 assert_se(t = strv_join(sessions, " "));
 200                 strv_free(sessions);
 201                 log_info("sd_seat_get_sessions(\"%s\", …) → %i, \"%s\", [%i] {%s}",
 202                          seat, r, t, n, format_uids(&buf, uids, n));
 203                 free(t);
 204
 205                 assert_se(sd_seat_get_sessions(seat, NULL, NULL, NULL) == r);
 206         }
 207
 208         r = sd_get_seats(&seats);
 209         assert_se(r >= 0);
 210         assert_se(r == (int) strv_length(seats));
 211         assert_se(t = strv_join(seats, ", "));
 212         strv_free(seats);
 213         log_info("sd_get_seats(…) → [%i] \"%s\"", r, t);
 214         t = mfree(t);
 215
 216         assert_se(sd_get_seats(NULL) == r);
 217
 218         r = sd_seat_get_active(NULL, &t, NULL);
 219         assert_se(IN_SET(r, 0, -ENODATA));
 220         log_info("sd_seat_get_active(NULL, …) (active session on current seat) → %s", strnull(t));
 221         free(t);
 222
 223         r = sd_get_sessions(&sessions);
 224         assert_se(r >= 0);
 225         assert_se(r == (int) strv_length(sessions));
 226         assert_se(t = strv_join(sessions, ", "));
 227         strv_free(sessions);
 228         log_info("sd_get_sessions(…) → [%i] \"%s\"", r, t);
 229         free(t);
 230
 231         assert_se(sd_get_sessions(NULL) == r);
 232
 233         {
 234                 _cleanup_free_ uid_t *uids = NULL;
 235                 _cleanup_free_ char *buf = NULL;
 236
 237                 r = sd_get_uids(&uids);
 238                 assert_se(r >= 0);
 239                 log_info("sd_get_uids(…) → [%i] {%s}", r, format_uids(&buf, uids, r));
 240
 241                 assert_se(sd_get_uids(NULL) == r);
 242         }
 243
 244         {
 245                 _cleanup_strv_free_ char **machines = NULL;
 246                 _cleanup_free_ char *buf = NULL;
 247
 248                 r = sd_get_machine_names(&machines);
 249                 assert_se(r >= 0);
 250                 assert_se(r == (int) strv_length(machines));
 251                 assert_se(buf = strv_join(machines, " "));
 252
 253                 log_info("sd_get_machines(…) → [%i] \"%s\"", r, buf);
 254         }
 255 }
 256
 257 static void test_monitor(void) {
 258         sd_login_monitor *m = NULL;
 259         unsigned n;
 260         int r;
 261
 262         r = sd_login_monitor_new("session", &m);
 263         assert_se(r >= 0);
 264
 265         for (n = 0; n < 5; n++) {
 266                 struct pollfd pollfd = {};
 267                 usec_t timeout, nw;
 268
 269                 assert_se((pollfd.fd = sd_login_monitor_get_fd(m)) >= 0);
 270                 assert_se((pollfd.events = sd_login_monitor_get_events(m)) >= 0);
 271
 272                 assert_se(sd_login_monitor_get_timeout(m, &timeout) >= 0);
 273
 274                 nw = now(CLOCK_MONOTONIC);
 275
 276                 r = poll(&pollfd, 1,
 277                          timeout == (uint64_t) -1 ? -1 :
 278                          timeout > nw ? (int) ((timeout - nw) / 1000) :
 279                          0);
 280
 281                 assert_se(r >= 0);
 282
 283                 sd_login_monitor_flush(m);
 284                 printf("Wake!\n");
 285         }
 286
 287         sd_login_monitor_unref(m);
 288 }
 289
 290 int main(int argc, char* argv[]) {
 291         log_parse_environment();
 292         log_open();
 293
 294         log_info("/* Information printed is from the live system */");
 295
 296         test_login();
 297
 298         if (streq_ptr(argv[1], "-m"))
 299                 test_monitor();
 300
 301         return 0;
 302 }