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\"", strna(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\"", strna(user_unit));
  71
  72         r = sd_pid_get_slice(0, &slice);
  73         assert_se(r >= 0 || r == -ENODATA);
  74         log_info("sd_pid_get_slice(0, …) → \"%s\"", strna(slice));
  75
  76         r = sd_pid_get_session(0, &session);
  77         if (r < 0) {
  78                 log_warning_errno(r, "sd_pid_get_session(0, …): %m");
  79                 if (r == -ENODATA)
  80                         log_info("Seems we are not running in a session, skipping some tests.");
  81         } else {
  82                 log_info("sd_pid_get_session(0, …) → \"%s\"", session);
  83
  84                 assert_se(sd_pid_get_owner_uid(0, &u2) == 0);
  85                 log_info("sd_pid_get_owner_uid(0, …) → "UID_FMT, u2);
  86
  87                 assert_se(sd_pid_get_cgroup(0, &cgroup) == 0);
  88                 log_info("sd_pid_get_cgroup(0, …) → \"%s\"", cgroup);
  89
  90                 r = sd_uid_get_display(u2, &display_session);
  91                 assert_se(r >= 0 || r == -ENODATA);
  92                 log_info("sd_uid_get_display("UID_FMT", …) → \"%s\"",
  93                          u2, strnull(display_session));
  94
  95                 assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == 0);
  96                 sd_peer_get_session(pair[0], &pp);
  97                 sd_peer_get_session(pair[1], &qq);
  98                 assert_se(streq_ptr(pp, qq));
  99
 100                 r = sd_uid_get_sessions(u2, false, &sessions);
 101                 assert_se(r >= 0);
 102                 assert_se(r == (int) strv_length(sessions));
 103                 assert_se(t = strv_join(sessions, " "));
 104                 strv_free(sessions);
 105                 log_info("sd_uid_get_sessions("UID_FMT", …) → [%i] \"%s\"", u2, r, t);
 106                 free(t);
 107
 108                 assert_se(r == sd_uid_get_sessions(u2, false, NULL));
 109
 110                 r = sd_uid_get_seats(u2, false, &seats);
 111                 assert_se(r >= 0);
 112                 assert_se(r == (int) strv_length(seats));
 113                 assert_se(t = strv_join(seats, " "));
 114                 strv_free(seats);
 115                 log_info("sd_uid_get_seats("UID_FMT", …) → [%i] \"%s\"", u2, r, t);
 116                 free(t);
 117
 118                 assert_se(r == sd_uid_get_seats(u2, false, NULL));
 119         }
 120
 121         if (session) {
 122                 r = sd_session_is_active(session);
 123                 assert_se(r >= 0);
 124                 log_info("sd_session_is_active(\"%s\") → %s", session, yes_no(r));
 125
 126                 r = sd_session_is_remote(session);
 127                 assert_se(r >= 0);
 128                 log_info("sd_session_is_remote(\"%s\") → %s", session, yes_no(r));
 129
 130                 r = sd_session_get_state(session, &state);
 131                 assert_se(r >= 0);
 132                 log_info("sd_session_get_state(\"%s\") → \"%s\"", session, state);
 133
 134                 assert_se(sd_session_get_uid(session, &u) >= 0);
 135                 log_info("sd_session_get_uid(\"%s\") → "UID_FMT, session, u);
 136                 assert_se(u == u2);
 137
 138                 assert_se(sd_session_get_type(session, &type) >= 0);
 139                 log_info("sd_session_get_type(\"%s\") → \"%s\"", session, type);
 140
 141                 assert_se(sd_session_get_class(session, &class) >= 0);
 142                 log_info("sd_session_get_class(\"%s\") → \"%s\"", session, class);
 143
 144                 r = sd_session_get_display(session, &display);
 145                 assert_se(r >= 0 || r == -ENODATA);
 146                 log_info("sd_session_get_display(\"%s\") → \"%s\"", session, strna(display));
 147
 148                 r = sd_session_get_remote_user(session, &remote_user);
 149                 assert_se(r >= 0 || r == -ENODATA);
 150                 log_info("sd_session_get_remote_user(\"%s\") → \"%s\"",
 151                          session, strna(remote_user));
 152
 153                 r = sd_session_get_remote_host(session, &remote_host);
 154                 assert_se(r >= 0 || r == -ENODATA);
 155                 log_info("sd_session_get_remote_host(\"%s\") → \"%s\"",
 156                          session, strna(remote_host));
 157
 158                 r = sd_session_get_seat(session, &seat);
 159                 if (r >= 0) {
 160                         assert_se(seat);
 161
 162                         log_info("sd_session_get_display(\"%s\") → \"%s\"", session, seat);
 163
 164                         r = sd_seat_can_multi_session(seat);
 165                         assert_se(r >= 0);
 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_display(\"%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         if (seat) {
 185                 _cleanup_free_ char *session2 = NULL, *buf = NULL;
 186                 _cleanup_free_ uid_t *uids = NULL;
 187                 unsigned n;
 188
 189                 assert_se(sd_uid_is_on_seat(u, 0, seat) > 0);
 190
 191                 k = sd_uid_is_on_seat(u, 1, seat);
 192                 assert_se(k >= 0);
 193                 assert_se(!!k == !!r);
 194
 195                 assert_se(sd_seat_get_active(seat, &session2, &u2) >= 0);
 196                 log_info("sd_seat_get_active(\"%s\", …) → \"%s\", "UID_FMT, seat, session2, u2);
 197
 198                 r = sd_seat_get_sessions(seat, &sessions, &uids, &n);
 199                 assert_se(r >= 0);
 200                 assert_se(r == (int) strv_length(sessions));
 201                 assert_se(t = strv_join(sessions, " "));
 202                 strv_free(sessions);
 203                 log_info("sd_seat_get_sessions(\"%s\", …) → %i, \"%s\", [%i] {%s}",
 204                          seat, r, t, n, format_uids(&buf, uids, n));
 205                 free(t);
 206
 207                 assert_se(sd_seat_get_sessions(seat, NULL, NULL, NULL) == r);
 208         }
 209
 210         r = sd_get_seats(&seats);
 211         assert_se(r >= 0);
 212         assert_se(r == (int) strv_length(seats));
 213         assert_se(t = strv_join(seats, ", "));
 214         strv_free(seats);
 215         log_info("sd_get_seats(…) → [%i] \"%s\"", r, t);
 216         t = mfree(t);
 217
 218         assert_se(sd_get_seats(NULL) == r);
 219
 220         r = sd_seat_get_active(NULL, &t, NULL);
 221         assert_se(IN_SET(r, 0, -ENODATA));
 222         log_info("sd_seat_get_active(NULL, …) (active session on current seat) → %s", strnull(t));
 223         free(t);
 224
 225         r = sd_get_sessions(&sessions);
 226         assert_se(r >= 0);
 227         assert_se(r == (int) strv_length(sessions));
 228         assert_se(t = strv_join(sessions, ", "));
 229         strv_free(sessions);
 230         log_info("sd_get_sessions(…) → [%i] \"%s\"", r, t);
 231         free(t);
 232
 233         assert_se(sd_get_sessions(NULL) == r);
 234
 235         {
 236                 _cleanup_free_ uid_t *uids = NULL;
 237                 _cleanup_free_ char *buf = NULL;
 238
 239                 r = sd_get_uids(&uids);
 240                 assert_se(r >= 0);
 241                 log_info("sd_get_uids(…) → [%i] {%s}", r, format_uids(&buf, uids, r));
 242
 243                 assert_se(sd_get_uids(NULL) == r);
 244         }
 245
 246         {
 247                 _cleanup_strv_free_ char **machines = NULL;
 248                 _cleanup_free_ char *buf = NULL;
 249
 250                 r = sd_get_machine_names(&machines);
 251                 assert_se(r >= 0);
 252                 assert_se(r == (int) strv_length(machines));
 253                 assert_se(buf = strv_join(machines, " "));
 254                 log_info("sd_get_machines(…) → [%i] \"%s\"", r, buf);
 255
 256                 assert_se(sd_get_machine_names(NULL) == r);
 257         }
 258 }
 259
 260 static void test_monitor(void) {
 261         sd_login_monitor *m = NULL;
 262         unsigned n;
 263         int r;
 264
 265         r = sd_login_monitor_new("session", &m);
 266         assert_se(r >= 0);
 267
 268         for (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 }