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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
8c6db833 LP |
2 | |
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <errno.h> | |
23 | #include <fcntl.h> | |
24 | #include <sys/file.h> | |
25 | #include <pwd.h> | |
a838e6a1 | 26 | #include <endian.h> |
ac123445 | 27 | #include <sys/capability.h> |
8c6db833 LP |
28 | |
29 | #include <security/pam_modules.h> | |
30 | #include <security/_pam_macros.h> | |
31 | #include <security/pam_modutil.h> | |
32 | #include <security/pam_ext.h> | |
33 | #include <security/pam_misc.h> | |
34 | ||
81527be1 LP |
35 | #include <systemd/sd-daemon.h> |
36 | ||
8c6db833 | 37 | #include "util.h" |
8c6db833 | 38 | #include "macro.h" |
74fe1fe3 | 39 | #include "strv.h" |
98a28fef LP |
40 | #include "dbus-common.h" |
41 | #include "def.h" | |
4d6d6518 | 42 | #include "socket-util.h" |
8c6db833 LP |
43 | |
44 | static int parse_argv(pam_handle_t *handle, | |
45 | int argc, const char **argv, | |
b20c6be6 | 46 | char ***controllers, |
e9fbc77c | 47 | char ***reset_controllers, |
98a28fef | 48 | bool *kill_processes, |
e9fbc77c | 49 | char ***kill_only_users, |
0e318cad MS |
50 | char ***kill_exclude_users, |
51 | bool *debug) { | |
8c6db833 LP |
52 | |
53 | unsigned i; | |
54 | ||
55 | assert(argc >= 0); | |
56 | assert(argc == 0 || argv); | |
57 | ||
58 | for (i = 0; i < (unsigned) argc; i++) { | |
59 | int k; | |
60 | ||
c36eecdf LP |
61 | if (startswith(argv[i], "kill-session-processes=")) { |
62 | if ((k = parse_boolean(argv[i] + 23)) < 0) { | |
63 | pam_syslog(handle, LOG_ERR, "Failed to parse kill-session-processes= argument."); | |
8c6db833 LP |
64 | return k; |
65 | } | |
66 | ||
98a28fef LP |
67 | if (kill_processes) |
68 | *kill_processes = k; | |
74fe1fe3 | 69 | |
8c6db833 | 70 | } else if (startswith(argv[i], "kill-session=")) { |
98a28fef LP |
71 | /* As compatibility for old versions */ |
72 | ||
8c6db833 LP |
73 | if ((k = parse_boolean(argv[i] + 13)) < 0) { |
74 | pam_syslog(handle, LOG_ERR, "Failed to parse kill-session= argument."); | |
75 | return k; | |
76 | } | |
77 | ||
98a28fef LP |
78 | if (kill_processes) |
79 | *kill_processes = k; | |
74fe1fe3 LP |
80 | |
81 | } else if (startswith(argv[i], "controllers=")) { | |
82 | ||
83 | if (controllers) { | |
84 | char **l; | |
85 | ||
86 | if (!(l = strv_split(argv[i] + 12, ","))) { | |
87 | pam_syslog(handle, LOG_ERR, "Out of memory."); | |
88 | return -ENOMEM; | |
89 | } | |
90 | ||
91 | strv_free(*controllers); | |
92 | *controllers = l; | |
93 | } | |
94 | ||
b20c6be6 LP |
95 | } else if (startswith(argv[i], "reset-controllers=")) { |
96 | ||
97 | if (reset_controllers) { | |
98 | char **l; | |
99 | ||
100 | if (!(l = strv_split(argv[i] + 18, ","))) { | |
101 | pam_syslog(handle, LOG_ERR, "Out of memory."); | |
102 | return -ENOMEM; | |
103 | } | |
104 | ||
105 | strv_free(*reset_controllers); | |
106 | *reset_controllers = l; | |
107 | } | |
108 | ||
e9fbc77c LP |
109 | } else if (startswith(argv[i], "kill-only-users=")) { |
110 | ||
111 | if (kill_only_users) { | |
112 | char **l; | |
113 | ||
114 | if (!(l = strv_split(argv[i] + 16, ","))) { | |
115 | pam_syslog(handle, LOG_ERR, "Out of memory."); | |
116 | return -ENOMEM; | |
117 | } | |
118 | ||
119 | strv_free(*kill_only_users); | |
120 | *kill_only_users = l; | |
121 | } | |
122 | ||
123 | } else if (startswith(argv[i], "kill-exclude-users=")) { | |
124 | ||
125 | if (kill_exclude_users) { | |
126 | char **l; | |
127 | ||
128 | if (!(l = strv_split(argv[i] + 19, ","))) { | |
129 | pam_syslog(handle, LOG_ERR, "Out of memory."); | |
130 | return -ENOMEM; | |
131 | } | |
132 | ||
133 | strv_free(*kill_exclude_users); | |
134 | *kill_exclude_users = l; | |
135 | } | |
136 | ||
0e318cad MS |
137 | } else if (startswith(argv[i], "debug=")) { |
138 | if ((k = parse_boolean(argv[i] + 6)) < 0) { | |
139 | pam_syslog(handle, LOG_ERR, "Failed to parse debug= argument."); | |
140 | return k; | |
141 | } | |
142 | ||
143 | if (debug) | |
144 | *debug = k; | |
145 | ||
98a28fef LP |
146 | } else if (startswith(argv[i], "create-session=") || |
147 | startswith(argv[i], "kill-user=")) { | |
148 | ||
149 | pam_syslog(handle, LOG_WARNING, "Option %s not supported anymore, ignoring.", argv[i]); | |
150 | ||
8c6db833 LP |
151 | } else { |
152 | pam_syslog(handle, LOG_ERR, "Unknown parameter '%s'.", argv[i]); | |
153 | return -EINVAL; | |
154 | } | |
155 | } | |
156 | ||
8c6db833 LP |
157 | return 0; |
158 | } | |
159 | ||
8c6db833 LP |
160 | static int get_user_data( |
161 | pam_handle_t *handle, | |
162 | const char **ret_username, | |
163 | struct passwd **ret_pw) { | |
164 | ||
d90b9d27 LP |
165 | const char *username = NULL; |
166 | struct passwd *pw = NULL; | |
87d2c1ff | 167 | uid_t uid; |
8c6db833 LP |
168 | int r; |
169 | ||
170 | assert(handle); | |
171 | assert(ret_username); | |
172 | assert(ret_pw); | |
173 | ||
87d2c1ff LP |
174 | r = audit_loginuid_from_pid(0, &uid); |
175 | if (r >= 0) | |
176 | pw = pam_modutil_getpwuid(handle, uid); | |
177 | else { | |
178 | r = pam_get_user(handle, &username, NULL); | |
179 | if (r != PAM_SUCCESS) { | |
d90b9d27 LP |
180 | pam_syslog(handle, LOG_ERR, "Failed to get user name."); |
181 | return r; | |
182 | } | |
183 | ||
87d2c1ff | 184 | if (isempty(username)) { |
d90b9d27 LP |
185 | pam_syslog(handle, LOG_ERR, "User name not valid."); |
186 | return PAM_AUTH_ERR; | |
187 | } | |
188 | ||
189 | pw = pam_modutil_getpwnam(handle, username); | |
8c6db833 LP |
190 | } |
191 | ||
d90b9d27 | 192 | if (!pw) { |
8c6db833 LP |
193 | pam_syslog(handle, LOG_ERR, "Failed to get user data."); |
194 | return PAM_USER_UNKNOWN; | |
195 | } | |
196 | ||
197 | *ret_pw = pw; | |
d90b9d27 | 198 | *ret_username = username ? username : pw->pw_name; |
8c6db833 LP |
199 | |
200 | return PAM_SUCCESS; | |
201 | } | |
202 | ||
e9fbc77c LP |
203 | static bool check_user_lists( |
204 | pam_handle_t *handle, | |
205 | uid_t uid, | |
206 | char **kill_only_users, | |
207 | char **kill_exclude_users) { | |
208 | ||
209 | const char *name = NULL; | |
210 | char **l; | |
211 | ||
212 | assert(handle); | |
213 | ||
214 | if (uid == 0) | |
215 | name = "root"; /* Avoid obvious NSS requests, to suppress network traffic */ | |
216 | else { | |
217 | struct passwd *pw; | |
218 | ||
98a28fef LP |
219 | pw = pam_modutil_getpwuid(handle, uid); |
220 | if (pw) | |
e9fbc77c LP |
221 | name = pw->pw_name; |
222 | } | |
223 | ||
224 | STRV_FOREACH(l, kill_exclude_users) { | |
ddd88763 | 225 | uid_t u; |
e9fbc77c | 226 | |
ddd88763 LP |
227 | if (parse_uid(*l, &u) >= 0) |
228 | if (u == uid) | |
e9fbc77c LP |
229 | return false; |
230 | ||
231 | if (name && streq(name, *l)) | |
232 | return false; | |
233 | } | |
234 | ||
235 | if (strv_isempty(kill_only_users)) | |
236 | return true; | |
237 | ||
238 | STRV_FOREACH(l, kill_only_users) { | |
ddd88763 | 239 | uid_t u; |
e9fbc77c | 240 | |
ddd88763 LP |
241 | if (parse_uid(*l, &u) >= 0) |
242 | if (u == uid) | |
e9fbc77c LP |
243 | return true; |
244 | ||
245 | if (name && streq(name, *l)) | |
246 | return true; | |
247 | } | |
248 | ||
249 | return false; | |
250 | } | |
251 | ||
4d6d6518 LP |
252 | static int get_seat_from_display(const char *display, const char **seat, uint32_t *vtnr) { |
253 | char *p = NULL; | |
254 | int r; | |
255 | int fd; | |
256 | union sockaddr_union sa; | |
257 | struct ucred ucred; | |
258 | socklen_t l; | |
259 | char *tty; | |
260 | int v; | |
261 | ||
262 | assert(display); | |
4d6d6518 LP |
263 | assert(vtnr); |
264 | ||
265 | /* We deduce the X11 socket from the display name, then use | |
266 | * SO_PEERCRED to determine the X11 server process, ask for | |
267 | * the controlling tty of that and if it's a VC then we know | |
268 | * the seat and the virtual terminal. Sounds ugly, is only | |
269 | * semi-ugly. */ | |
270 | ||
271 | r = socket_from_display(display, &p); | |
272 | if (r < 0) | |
273 | return r; | |
274 | ||
275 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0); | |
276 | if (fd < 0) { | |
277 | free(p); | |
278 | return -errno; | |
279 | } | |
280 | ||
281 | zero(sa); | |
282 | sa.un.sun_family = AF_UNIX; | |
283 | strncpy(sa.un.sun_path, p, sizeof(sa.un.sun_path)-1); | |
284 | free(p); | |
285 | ||
286 | if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) { | |
287 | close_nointr_nofail(fd); | |
288 | return -errno; | |
289 | } | |
290 | ||
291 | l = sizeof(ucred); | |
292 | r = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l); | |
293 | close_nointr_nofail(fd); | |
294 | ||
295 | if (r < 0) | |
296 | return -errno; | |
297 | ||
298 | r = get_ctty(ucred.pid, NULL, &tty); | |
299 | if (r < 0) | |
300 | return r; | |
301 | ||
302 | v = vtnr_from_tty(tty); | |
303 | free(tty); | |
304 | ||
305 | if (v < 0) | |
306 | return v; | |
307 | else if (v == 0) | |
308 | return -ENOENT; | |
309 | ||
fc7985ed LP |
310 | if (seat) |
311 | *seat = "seat0"; | |
4d6d6518 LP |
312 | *vtnr = (uint32_t) v; |
313 | ||
314 | return 0; | |
315 | } | |
316 | ||
98a28fef | 317 | _public_ PAM_EXTERN int pam_sm_open_session( |
8c6db833 LP |
318 | pam_handle_t *handle, |
319 | int flags, | |
320 | int argc, const char **argv) { | |
321 | ||
8c6db833 | 322 | struct passwd *pw; |
98a28fef | 323 | bool kill_processes = false, debug = false; |
4d6d6518 | 324 | const char *username, *id, *object_path, *runtime_path, *service = NULL, *tty = NULL, *display = NULL, *remote_user = NULL, *remote_host = NULL, *seat = NULL, *type, *cvtnr = NULL; |
98a28fef | 325 | char **controllers = NULL, **reset_controllers = NULL, **kill_only_users = NULL, **kill_exclude_users = NULL; |
98a28fef LP |
326 | DBusError error; |
327 | uint32_t uid, pid; | |
328 | DBusMessageIter iter; | |
329 | dbus_bool_t kp; | |
98a28fef LP |
330 | int session_fd = -1; |
331 | DBusConnection *bus = NULL; | |
332 | DBusMessage *m = NULL, *reply = NULL; | |
333 | dbus_bool_t remote; | |
ed18b08b | 334 | int r; |
4d6d6518 | 335 | uint32_t vtnr = 0; |
8c6db833 LP |
336 | |
337 | assert(handle); | |
338 | ||
98a28fef LP |
339 | dbus_error_init(&error); |
340 | ||
ed18b08b | 341 | /* pam_syslog(handle, LOG_INFO, "pam-systemd initializing"); */ |
98a28fef | 342 | |
8c6db833 LP |
343 | /* Make this a NOP on non-systemd systems */ |
344 | if (sd_booted() <= 0) | |
345 | return PAM_SUCCESS; | |
346 | ||
e9fbc77c LP |
347 | if (parse_argv(handle, |
348 | argc, argv, | |
98a28fef LP |
349 | &controllers, &reset_controllers, |
350 | &kill_processes, &kill_only_users, &kill_exclude_users, | |
ed18b08b LP |
351 | &debug) < 0) { |
352 | r = PAM_SESSION_ERR; | |
353 | goto finish; | |
354 | } | |
74fe1fe3 | 355 | |
98a28fef LP |
356 | r = get_user_data(handle, &username, &pw); |
357 | if (r != PAM_SUCCESS) | |
8c6db833 LP |
358 | goto finish; |
359 | ||
30b2c336 LP |
360 | /* Make sure we don't enter a loop by talking to |
361 | * systemd-logind when it is actually waiting for the | |
362 | * background to finish start-up. If the service is | |
363 | * "systemd-shared" we simply set XDG_RUNTIME_DIR and | |
364 | * leave. */ | |
365 | ||
366 | pam_get_item(handle, PAM_SERVICE, (const void**) &service); | |
367 | if (streq_ptr(service, "systemd-shared")) { | |
368 | char *p, *rt = NULL; | |
369 | ||
370 | if (asprintf(&p, "/run/systemd/users/%lu", (unsigned long) pw->pw_uid) < 0) { | |
371 | r = PAM_BUF_ERR; | |
372 | goto finish; | |
373 | } | |
374 | ||
375 | r = parse_env_file(p, NEWLINE, | |
376 | "RUNTIME", &rt, | |
377 | NULL); | |
378 | free(p); | |
379 | ||
380 | if (r < 0 && r != -ENOENT) { | |
381 | r = PAM_SESSION_ERR; | |
382 | free(rt); | |
383 | goto finish; | |
384 | } | |
385 | ||
386 | if (rt) { | |
387 | r = pam_misc_setenv(handle, "XDG_RUNTIME_DIR", rt, 0); | |
388 | free(rt); | |
389 | ||
390 | if (r != PAM_SUCCESS) { | |
391 | pam_syslog(handle, LOG_ERR, "Failed to set runtime dir."); | |
392 | goto finish; | |
393 | } | |
394 | } | |
395 | ||
396 | r = PAM_SUCCESS; | |
397 | goto finish; | |
398 | } | |
399 | ||
98a28fef LP |
400 | if (kill_processes) |
401 | kill_processes = check_user_lists(handle, pw->pw_uid, kill_only_users, kill_exclude_users); | |
1f73f0f1 | 402 | |
ed18b08b LP |
403 | dbus_connection_set_change_sigpipe(FALSE); |
404 | ||
98a28fef LP |
405 | bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error); |
406 | if (!bus) { | |
407 | pam_syslog(handle, LOG_ERR, "Failed to connect to system bus: %s", bus_error_message(&error)); | |
408 | r = PAM_SESSION_ERR; | |
8c6db833 LP |
409 | goto finish; |
410 | } | |
411 | ||
98a28fef LP |
412 | m = dbus_message_new_method_call( |
413 | "org.freedesktop.login1", | |
414 | "/org/freedesktop/login1", | |
415 | "org.freedesktop.login1.Manager", | |
416 | "CreateSession"); | |
74fe1fe3 | 417 | |
98a28fef LP |
418 | if (!m) { |
419 | pam_syslog(handle, LOG_ERR, "Could not allocate create session message."); | |
8c6db833 LP |
420 | r = PAM_BUF_ERR; |
421 | goto finish; | |
422 | } | |
423 | ||
98a28fef LP |
424 | uid = pw->pw_uid; |
425 | pid = getpid(); | |
426 | ||
98a28fef LP |
427 | pam_get_item(handle, PAM_XDISPLAY, (const void**) &display); |
428 | pam_get_item(handle, PAM_TTY, (const void**) &tty); | |
429 | pam_get_item(handle, PAM_RUSER, (const void**) &remote_user); | |
430 | pam_get_item(handle, PAM_RHOST, (const void**) &remote_host); | |
bbc73283 LP |
431 | seat = pam_getenv(handle, "XDG_SEAT"); |
432 | cvtnr = pam_getenv(handle, "XDG_VTNR"); | |
98a28fef | 433 | |
ed18b08b LP |
434 | service = strempty(service); |
435 | tty = strempty(tty); | |
436 | display = strempty(display); | |
437 | remote_user = strempty(remote_user); | |
438 | remote_host = strempty(remote_host); | |
439 | seat = strempty(seat); | |
98a28fef | 440 | |
ee8545b0 LP |
441 | if (strchr(tty, ':')) { |
442 | /* A tty with a colon is usually an X11 display, place | |
443 | * there to show up in utmp. We rearrange things and | |
444 | * don't pretend that an X display was a tty */ | |
445 | ||
446 | if (isempty(display)) | |
447 | display = tty; | |
cd58752a | 448 | tty = ""; |
1a4459d6 MS |
449 | } else if (streq(tty, "cron")) { |
450 | /* cron has been setting PAM_TTY to "cron" for a very long time | |
451 | * and it cannot stop doing that for compatibility reasons. */ | |
452 | tty = ""; | |
ee8545b0 LP |
453 | } |
454 | ||
4d6d6518 LP |
455 | if (!isempty(cvtnr)) |
456 | safe_atou32(cvtnr, &vtnr); | |
457 | ||
fc7985ed LP |
458 | if (!isempty(display) && vtnr <= 0) { |
459 | if (isempty(seat)) | |
460 | get_seat_from_display(handle, display, &seat, &vtnr); | |
461 | else if (streq(seat, "seat0")) | |
462 | get_seat_from_display(handle, display, NULL, &vtnr); | |
463 | } | |
4d6d6518 | 464 | |
98a28fef | 465 | type = !isempty(display) ? "x11" : |
1dc99537 | 466 | !isempty(tty) ? "tty" : "unspecified"; |
98a28fef LP |
467 | |
468 | remote = !isempty(remote_host) && !streq(remote_host, "localhost") && !streq(remote_host, "localhost.localdomain"); | |
469 | ||
470 | if (!dbus_message_append_args(m, | |
471 | DBUS_TYPE_UINT32, &uid, | |
472 | DBUS_TYPE_UINT32, &pid, | |
473 | DBUS_TYPE_STRING, &service, | |
474 | DBUS_TYPE_STRING, &type, | |
475 | DBUS_TYPE_STRING, &seat, | |
4d6d6518 | 476 | DBUS_TYPE_UINT32, &vtnr, |
98a28fef LP |
477 | DBUS_TYPE_STRING, &tty, |
478 | DBUS_TYPE_STRING, &display, | |
479 | DBUS_TYPE_BOOLEAN, &remote, | |
480 | DBUS_TYPE_STRING, &remote_user, | |
481 | DBUS_TYPE_STRING, &remote_host, | |
482 | DBUS_TYPE_INVALID)) { | |
483 | pam_syslog(handle, LOG_ERR, "Could not attach parameters to message."); | |
484 | r = PAM_BUF_ERR; | |
485 | goto finish; | |
486 | } | |
8c6db833 | 487 | |
98a28fef | 488 | dbus_message_iter_init_append(m, &iter); |
8c6db833 | 489 | |
98a28fef LP |
490 | r = bus_append_strv_iter(&iter, controllers); |
491 | if (r < 0) { | |
492 | pam_syslog(handle, LOG_ERR, "Could not attach parameter to message."); | |
493 | r = PAM_BUF_ERR; | |
494 | goto finish; | |
495 | } | |
672c48cc | 496 | |
98a28fef LP |
497 | r = bus_append_strv_iter(&iter, reset_controllers); |
498 | if (r < 0) { | |
499 | pam_syslog(handle, LOG_ERR, "Could not attach parameter to message."); | |
500 | r = PAM_BUF_ERR; | |
501 | goto finish; | |
502 | } | |
672c48cc | 503 | |
98a28fef LP |
504 | kp = kill_processes; |
505 | if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &kp)) { | |
506 | pam_syslog(handle, LOG_ERR, "Could not attach parameter to message."); | |
507 | r = PAM_BUF_ERR; | |
508 | goto finish; | |
509 | } | |
8c6db833 | 510 | |
ce959314 MS |
511 | if (debug) |
512 | pam_syslog(handle, LOG_DEBUG, "Asking logind to create session: " | |
513 | "uid=%u pid=%u service=%s type=%s seat=%s vtnr=%u tty=%s display=%s remote=%s remote_user=%s remote_host=%s", | |
514 | uid, pid, service, type, seat, vtnr, tty, display, yes_no(remote), remote_user, remote_host); | |
515 | ||
98a28fef LP |
516 | reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error); |
517 | if (!reply) { | |
518 | pam_syslog(handle, LOG_ERR, "Failed to create session: %s", bus_error_message(&error)); | |
519 | r = PAM_SESSION_ERR; | |
520 | goto finish; | |
521 | } | |
74fe1fe3 | 522 | |
98a28fef LP |
523 | if (!dbus_message_get_args(reply, &error, |
524 | DBUS_TYPE_STRING, &id, | |
525 | DBUS_TYPE_OBJECT_PATH, &object_path, | |
526 | DBUS_TYPE_STRING, &runtime_path, | |
527 | DBUS_TYPE_UNIX_FD, &session_fd, | |
bbc73283 LP |
528 | DBUS_TYPE_STRING, &seat, |
529 | DBUS_TYPE_UINT32, &vtnr, | |
98a28fef LP |
530 | DBUS_TYPE_INVALID)) { |
531 | pam_syslog(handle, LOG_ERR, "Failed to parse message: %s", bus_error_message(&error)); | |
532 | r = PAM_SESSION_ERR; | |
533 | goto finish; | |
534 | } | |
74fe1fe3 | 535 | |
ce959314 MS |
536 | if (debug) |
537 | pam_syslog(handle, LOG_DEBUG, "Reply from logind: " | |
538 | "id=%s object_path=%s runtime_path=%s session_fd=%d seat=%s vtnr=%u", | |
539 | id, object_path, runtime_path, session_fd, seat, vtnr); | |
540 | ||
98a28fef LP |
541 | r = pam_misc_setenv(handle, "XDG_SESSION_ID", id, 0); |
542 | if (r != PAM_SUCCESS) { | |
543 | pam_syslog(handle, LOG_ERR, "Failed to set session id."); | |
544 | goto finish; | |
8c6db833 LP |
545 | } |
546 | ||
98a28fef LP |
547 | r = pam_misc_setenv(handle, "XDG_RUNTIME_DIR", runtime_path, 0); |
548 | if (r != PAM_SUCCESS) { | |
549 | pam_syslog(handle, LOG_ERR, "Failed to set runtime dir."); | |
550 | goto finish; | |
551 | } | |
8c6db833 | 552 | |
bbc73283 LP |
553 | if (!isempty(seat)) { |
554 | r = pam_misc_setenv(handle, "XDG_SEAT", seat, 0); | |
555 | if (r != PAM_SUCCESS) { | |
556 | pam_syslog(handle, LOG_ERR, "Failed to set seat."); | |
557 | goto finish; | |
558 | } | |
559 | } | |
560 | ||
561 | if (vtnr > 0) { | |
562 | char buf[11]; | |
563 | snprintf(buf, sizeof(buf), "%u", vtnr); | |
564 | char_array_0(buf); | |
565 | ||
566 | r = pam_misc_setenv(handle, "XDG_VTNR", buf, 0); | |
567 | if (r != PAM_SUCCESS) { | |
568 | pam_syslog(handle, LOG_ERR, "Failed to set virtual terminal number."); | |
569 | goto finish; | |
570 | } | |
571 | } | |
572 | ||
21c390cc LP |
573 | if (session_fd >= 0) { |
574 | r = pam_set_data(handle, "systemd.session-fd", INT_TO_PTR(session_fd+1), NULL); | |
575 | if (r != PAM_SUCCESS) { | |
576 | pam_syslog(handle, LOG_ERR, "Failed to install session fd."); | |
577 | return r; | |
578 | } | |
98a28fef | 579 | } |
8c6db833 | 580 | |
98a28fef | 581 | session_fd = -1; |
8c6db833 | 582 | |
98a28fef | 583 | r = PAM_SUCCESS; |
8c6db833 | 584 | |
98a28fef LP |
585 | finish: |
586 | strv_free(controllers); | |
587 | strv_free(reset_controllers); | |
588 | strv_free(kill_only_users); | |
589 | strv_free(kill_exclude_users); | |
8c6db833 | 590 | |
98a28fef | 591 | dbus_error_free(&error); |
35d2e7ec | 592 | |
98a28fef LP |
593 | if (bus) { |
594 | dbus_connection_close(bus); | |
595 | dbus_connection_unref(bus); | |
8c6db833 LP |
596 | } |
597 | ||
98a28fef LP |
598 | if (m) |
599 | dbus_message_unref(m); | |
8c6db833 | 600 | |
ed18b08b LP |
601 | if (reply) |
602 | dbus_message_unref(reply); | |
603 | ||
98a28fef LP |
604 | if (session_fd >= 0) |
605 | close_nointr_nofail(session_fd); | |
672c48cc | 606 | |
98a28fef LP |
607 | return r; |
608 | } | |
8c6db833 | 609 | |
98a28fef LP |
610 | _public_ PAM_EXTERN int pam_sm_close_session( |
611 | pam_handle_t *handle, | |
612 | int flags, | |
613 | int argc, const char **argv) { | |
8c6db833 | 614 | |
98a28fef | 615 | const void *p = NULL; |
8c6db833 | 616 | |
98a28fef | 617 | pam_get_data(handle, "systemd.session-fd", &p); |
74fe1fe3 | 618 | |
98a28fef LP |
619 | if (p) |
620 | close_nointr(PTR_TO_INT(p) - 1); | |
1f73f0f1 | 621 | |
98a28fef | 622 | return PAM_SUCCESS; |
8c6db833 | 623 | } |