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

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