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ec863ba6 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
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 <stdbool.h> | |
23 | #include <errno.h> | |
24 | #include <string.h> | |
25 | #include <sys/socket.h> | |
26 | #include <sys/un.h> | |
27 | #include <stddef.h> | |
28 | #include <sys/poll.h> | |
29 | #include <sys/inotify.h> | |
30 | #include <unistd.h> | |
31 | #include <getopt.h> | |
b9ba604e | 32 | #include <sys/signalfd.h> |
7af53310 | 33 | #include <fcntl.h> |
ec863ba6 LP |
34 | |
35 | #include "util.h" | |
36 | #include "conf-parser.h" | |
37 | #include "utmp-wtmp.h" | |
e5ebf783 | 38 | #include "socket-util.h" |
7f4e0805 | 39 | #include "ask-password-api.h" |
21bc923a | 40 | #include "strv.h" |
ec863ba6 LP |
41 | |
42 | static enum { | |
43 | ACTION_LIST, | |
44 | ACTION_QUERY, | |
45 | ACTION_WATCH, | |
46 | ACTION_WALL | |
47 | } arg_action = ACTION_QUERY; | |
48 | ||
e5ebf783 | 49 | static bool arg_plymouth = false; |
0cf84693 | 50 | static bool arg_console = false; |
e5ebf783 | 51 | |
21bc923a LP |
52 | static int ask_password_plymouth( |
53 | const char *message, | |
54 | usec_t until, | |
55 | const char *flag_file, | |
56 | bool accept_cached, | |
57 | char ***_passphrases) { | |
58 | ||
e5ebf783 LP |
59 | int fd = -1, notify = -1; |
60 | union sockaddr_union sa; | |
61 | char *packet = NULL; | |
62 | ssize_t k; | |
63 | int r, n; | |
64 | struct pollfd pollfd[2]; | |
65 | char buffer[LINE_MAX]; | |
66 | size_t p = 0; | |
67 | enum { | |
68 | POLL_SOCKET, | |
69 | POLL_INOTIFY | |
70 | }; | |
71 | ||
21bc923a LP |
72 | assert(_passphrases); |
73 | ||
e5ebf783 LP |
74 | if (flag_file) { |
75 | if ((notify = inotify_init1(IN_CLOEXEC|IN_NONBLOCK)) < 0) { | |
76 | r = -errno; | |
77 | goto finish; | |
78 | } | |
79 | ||
80 | if (inotify_add_watch(notify, flag_file, IN_ATTRIB /* for the link count */) < 0) { | |
81 | r = -errno; | |
82 | goto finish; | |
83 | } | |
84 | } | |
85 | ||
86 | if ((fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) { | |
87 | r = -errno; | |
88 | goto finish; | |
89 | } | |
90 | ||
91 | zero(sa); | |
92 | sa.sa.sa_family = AF_UNIX; | |
96707269 LP |
93 | strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1); |
94 | if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { | |
c0f9c7da | 95 | log_error("Failed to connect to Plymouth: %m"); |
e5ebf783 LP |
96 | r = -errno; |
97 | goto finish; | |
98 | } | |
99 | ||
21bc923a LP |
100 | if (accept_cached) { |
101 | packet = strdup("c"); | |
102 | n = 1; | |
103 | } else | |
104 | asprintf(&packet, "*\002%c%s%n", (int) (strlen(message) + 1), message, &n); | |
105 | ||
106 | if (!packet) { | |
e5ebf783 LP |
107 | r = -ENOMEM; |
108 | goto finish; | |
109 | } | |
110 | ||
111 | if ((k = loop_write(fd, packet, n+1, true)) != n+1) { | |
112 | r = k < 0 ? (int) k : -EIO; | |
113 | goto finish; | |
114 | } | |
115 | ||
116 | zero(pollfd); | |
117 | pollfd[POLL_SOCKET].fd = fd; | |
118 | pollfd[POLL_SOCKET].events = POLLIN; | |
119 | pollfd[POLL_INOTIFY].fd = notify; | |
120 | pollfd[POLL_INOTIFY].events = POLLIN; | |
121 | ||
122 | for (;;) { | |
123 | int sleep_for = -1, j; | |
124 | ||
125 | if (until > 0) { | |
126 | usec_t y; | |
127 | ||
128 | y = now(CLOCK_MONOTONIC); | |
129 | ||
130 | if (y > until) { | |
ccc80078 | 131 | r = -ETIME; |
e5ebf783 LP |
132 | goto finish; |
133 | } | |
134 | ||
135 | sleep_for = (int) ((until - y) / USEC_PER_MSEC); | |
136 | } | |
137 | ||
138 | if (flag_file) | |
139 | if (access(flag_file, F_OK) < 0) { | |
140 | r = -errno; | |
141 | goto finish; | |
142 | } | |
143 | ||
144 | if ((j = poll(pollfd, notify > 0 ? 2 : 1, sleep_for)) < 0) { | |
145 | ||
146 | if (errno == EINTR) | |
147 | continue; | |
148 | ||
149 | r = -errno; | |
150 | goto finish; | |
151 | } else if (j == 0) { | |
ccc80078 | 152 | r = -ETIME; |
e5ebf783 LP |
153 | goto finish; |
154 | } | |
155 | ||
156 | if (notify > 0 && pollfd[POLL_INOTIFY].revents != 0) | |
157 | flush_fd(notify); | |
158 | ||
159 | if (pollfd[POLL_SOCKET].revents == 0) | |
160 | continue; | |
161 | ||
162 | if ((k = read(fd, buffer + p, sizeof(buffer) - p)) <= 0) { | |
163 | r = k < 0 ? -errno : -EIO; | |
164 | goto finish; | |
165 | } | |
166 | ||
167 | p += k; | |
168 | ||
169 | if (p < 1) | |
170 | continue; | |
171 | ||
172 | if (buffer[0] == 5) { | |
21bc923a LP |
173 | |
174 | if (accept_cached) { | |
175 | /* Hmm, first try with cached | |
176 | * passwords failed, so let's retry | |
177 | * with a normal password request */ | |
178 | free(packet); | |
179 | packet = NULL; | |
180 | ||
181 | if (asprintf(&packet, "*\002%c%s%n", (int) (strlen(message) + 1), message, &n) < 0) { | |
182 | r = -ENOMEM; | |
183 | goto finish; | |
184 | } | |
185 | ||
186 | if ((k = loop_write(fd, packet, n+1, true)) != n+1) { | |
187 | r = k < 0 ? (int) k : -EIO; | |
188 | goto finish; | |
189 | } | |
190 | ||
191 | accept_cached = false; | |
192 | p = 0; | |
193 | continue; | |
194 | } | |
195 | ||
e5ebf783 LP |
196 | /* No password, because UI not shown */ |
197 | r = -ENOENT; | |
198 | goto finish; | |
199 | ||
21bc923a | 200 | } else if (buffer[0] == 2 || buffer[0] == 9) { |
e5ebf783 | 201 | uint32_t size; |
21bc923a | 202 | char **l; |
e5ebf783 | 203 | |
21bc923a | 204 | /* One ore more answers */ |
e5ebf783 LP |
205 | if (p < 5) |
206 | continue; | |
207 | ||
208 | memcpy(&size, buffer+1, sizeof(size)); | |
209 | if (size+5 > sizeof(buffer)) { | |
210 | r = -EIO; | |
211 | goto finish; | |
212 | } | |
213 | ||
214 | if (p-5 < size) | |
215 | continue; | |
216 | ||
21bc923a | 217 | if (!(l = strv_parse_nulstr(buffer + 5, size))) { |
e5ebf783 LP |
218 | r = -ENOMEM; |
219 | goto finish; | |
220 | } | |
221 | ||
21bc923a | 222 | *_passphrases = l; |
e5ebf783 | 223 | break; |
21bc923a | 224 | |
e5ebf783 LP |
225 | } else { |
226 | /* Unknown packet */ | |
227 | r = -EIO; | |
228 | goto finish; | |
229 | } | |
230 | } | |
231 | ||
232 | r = 0; | |
233 | ||
234 | finish: | |
235 | if (notify >= 0) | |
236 | close_nointr_nofail(notify); | |
237 | ||
238 | if (fd >= 0) | |
239 | close_nointr_nofail(fd); | |
240 | ||
241 | free(packet); | |
242 | ||
243 | return r; | |
244 | } | |
245 | ||
0ddf1d3a | 246 | static int parse_password(const char *filename, char **wall) { |
ec863ba6 LP |
247 | char *socket_name = NULL, *message = NULL, *packet = NULL; |
248 | uint64_t not_after = 0; | |
249 | unsigned pid = 0; | |
250 | int socket_fd = -1; | |
21bc923a | 251 | bool accept_cached = false; |
ec863ba6 LP |
252 | |
253 | const ConfigItem items[] = { | |
21bc923a LP |
254 | { "Socket", config_parse_string, &socket_name, "Ask" }, |
255 | { "NotAfter", config_parse_uint64, ¬_after, "Ask" }, | |
256 | { "Message", config_parse_string, &message, "Ask" }, | |
257 | { "PID", config_parse_unsigned, &pid, "Ask" }, | |
258 | { "AcceptCached", config_parse_bool, &accept_cached, "Ask" }, | |
53d3afa8 | 259 | { NULL, NULL, NULL, NULL } |
ec863ba6 LP |
260 | }; |
261 | ||
262 | FILE *f; | |
263 | int r; | |
264 | usec_t n; | |
265 | ||
266 | assert(filename); | |
267 | ||
268 | if (!(f = fopen(filename, "re"))) { | |
269 | ||
270 | if (errno == ENOENT) | |
271 | return 0; | |
272 | ||
273 | log_error("open(%s): %m", filename); | |
274 | return -errno; | |
275 | } | |
276 | ||
656ce8f7 | 277 | if ((r = config_parse(filename, f, NULL, items, true, NULL)) < 0) { |
ec863ba6 LP |
278 | log_error("Failed to parse password file %s: %s", filename, strerror(-r)); |
279 | goto finish; | |
280 | } | |
281 | ||
282 | if (!socket_name || not_after <= 0) { | |
283 | log_error("Invalid password file %s", filename); | |
284 | r = -EBADMSG; | |
285 | goto finish; | |
286 | } | |
287 | ||
288 | n = now(CLOCK_MONOTONIC); | |
289 | if (n > not_after) { | |
290 | r = 0; | |
291 | goto finish; | |
292 | } | |
293 | ||
294 | if (arg_action == ACTION_LIST) | |
295 | printf("'%s' (PID %u)\n", message, pid); | |
296 | else if (arg_action == ACTION_WALL) { | |
0ddf1d3a | 297 | char *_wall; |
ec863ba6 | 298 | |
0ddf1d3a LP |
299 | if (asprintf(&_wall, |
300 | "%s%sPassword entry required for \'%s\' (PID %u).\r\n" | |
9d3e691e | 301 | "Please enter password with the systemd-tty-ask-password-agent tool!", |
0ddf1d3a LP |
302 | *wall ? *wall : "", |
303 | *wall ? "\r\n\r\n" : "", | |
ec863ba6 LP |
304 | message, |
305 | pid) < 0) { | |
306 | log_error("Out of memory"); | |
307 | r = -ENOMEM; | |
308 | goto finish; | |
309 | } | |
310 | ||
0ddf1d3a LP |
311 | free(*wall); |
312 | *wall = _wall; | |
ec863ba6 LP |
313 | } else { |
314 | union { | |
315 | struct sockaddr sa; | |
316 | struct sockaddr_un un; | |
317 | } sa; | |
21bc923a | 318 | size_t packet_length; |
ec863ba6 LP |
319 | |
320 | assert(arg_action == ACTION_QUERY || | |
321 | arg_action == ACTION_WATCH); | |
322 | ||
323 | if (access(socket_name, W_OK) < 0) { | |
324 | ||
325 | if (arg_action == ACTION_QUERY) | |
326 | log_info("Not querying '%s' (PID %u), lacking privileges.", message, pid); | |
327 | ||
328 | r = 0; | |
329 | goto finish; | |
330 | } | |
331 | ||
21bc923a LP |
332 | if (arg_plymouth) { |
333 | char **passwords; | |
334 | ||
335 | if ((r = ask_password_plymouth(message, not_after, filename, accept_cached, &passwords)) >= 0) { | |
336 | char **p; | |
337 | ||
338 | packet_length = 1; | |
339 | STRV_FOREACH(p, passwords) | |
340 | packet_length += strlen(*p) + 1; | |
341 | ||
342 | if (!(packet = new(char, packet_length))) | |
343 | r = -ENOMEM; | |
344 | else { | |
345 | char *d; | |
346 | ||
347 | packet[0] = '+'; | |
348 | d = packet+1; | |
349 | ||
350 | STRV_FOREACH(p, passwords) | |
351 | d = stpcpy(d, *p) + 1; | |
352 | } | |
353 | } | |
354 | ||
355 | } else { | |
0cf84693 | 356 | int tty_fd = -1; |
21bc923a | 357 | char *password; |
0cf84693 LP |
358 | |
359 | if (arg_console) | |
360 | if ((tty_fd = acquire_terminal("/dev/console", false, false, false)) < 0) { | |
361 | r = tty_fd; | |
362 | goto finish; | |
363 | } | |
364 | ||
e5ebf783 LP |
365 | r = ask_password_tty(message, not_after, filename, &password); |
366 | ||
0cf84693 LP |
367 | if (arg_console) { |
368 | close_nointr_nofail(tty_fd); | |
369 | release_terminal(); | |
370 | } | |
21bc923a LP |
371 | |
372 | asprintf(&packet, "+%s", password); | |
373 | free(password); | |
374 | ||
375 | packet_length = strlen(packet); | |
0cf84693 LP |
376 | } |
377 | ||
446f0046 LP |
378 | if (r == -ETIME || r == -ENOENT) { |
379 | /* If the query went away, that's OK */ | |
380 | r = 0; | |
381 | goto finish; | |
382 | } | |
383 | ||
e5ebf783 | 384 | if (r < 0) { |
446f0046 | 385 | |
e5ebf783 | 386 | log_error("Failed to query password: %s", strerror(-r)); |
ec863ba6 LP |
387 | goto finish; |
388 | } | |
389 | ||
ec863ba6 LP |
390 | if (!packet) { |
391 | log_error("Out of memory"); | |
392 | r = -ENOMEM; | |
393 | goto finish; | |
394 | } | |
395 | ||
396 | if ((socket_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0) { | |
397 | log_error("socket(): %m"); | |
398 | r = -errno; | |
399 | goto finish; | |
400 | } | |
401 | ||
402 | zero(sa); | |
403 | sa.un.sun_family = AF_UNIX; | |
404 | strncpy(sa.un.sun_path, socket_name, sizeof(sa.un.sun_path)); | |
405 | ||
21bc923a | 406 | if (sendto(socket_fd, packet, packet_length, MSG_NOSIGNAL, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(socket_name)) < 0) { |
ec863ba6 LP |
407 | log_error("Failed to send: %m"); |
408 | r = -errno; | |
409 | goto finish; | |
410 | } | |
411 | } | |
412 | ||
413 | finish: | |
414 | fclose(f); | |
415 | ||
416 | if (socket_fd >= 0) | |
417 | close_nointr_nofail(socket_fd); | |
418 | ||
419 | free(packet); | |
420 | free(socket_name); | |
421 | free(message); | |
422 | ||
423 | return r; | |
424 | } | |
425 | ||
0cf84693 | 426 | static int wall_tty_block(void) { |
7af53310 | 427 | char *p; |
fc116c6a LP |
428 | int fd, r; |
429 | dev_t devnr; | |
7af53310 | 430 | |
fc116c6a LP |
431 | if ((r = get_ctty_devnr(&devnr)) < 0) |
432 | return -r; | |
7af53310 | 433 | |
fc116c6a | 434 | if (asprintf(&p, "/dev/.systemd/ask-password-block/%u:%u", major(devnr), minor(devnr)) < 0) |
7af53310 LP |
435 | return -ENOMEM; |
436 | ||
437 | mkdir_parents(p, 0700); | |
438 | mkfifo(p, 0600); | |
439 | ||
440 | fd = open(p, O_RDONLY|O_CLOEXEC|O_NONBLOCK|O_NOCTTY); | |
441 | free(p); | |
442 | ||
443 | if (fd < 0) | |
444 | return -errno; | |
445 | ||
446 | return fd; | |
447 | } | |
448 | ||
0cf84693 | 449 | static bool wall_tty_match(const char *path) { |
fc116c6a | 450 | int fd, k; |
7af53310 | 451 | char *p; |
fc116c6a LP |
452 | struct stat st; |
453 | ||
454 | if (path_is_absolute(path)) | |
455 | k = lstat(path, &st); | |
456 | else { | |
457 | if (asprintf(&p, "/dev/%s", path) < 0) | |
458 | return true; | |
459 | ||
460 | k = lstat(p, &st); | |
461 | free(p); | |
462 | } | |
463 | ||
464 | if (k < 0) | |
465 | return true; | |
466 | ||
467 | if (!S_ISCHR(st.st_mode)) | |
468 | return true; | |
7af53310 LP |
469 | |
470 | /* We use named pipes to ensure that wall messages suggesting | |
471 | * password entry are not printed over password prompts | |
472 | * already shown. We use the fact here that opening a pipe in | |
473 | * non-blocking mode for write-only will succeed only if | |
474 | * there's some writer behind it. Using pipes has the | |
475 | * advantage that the block will automatically go away if the | |
476 | * process dies. */ | |
477 | ||
fc116c6a | 478 | if (asprintf(&p, "/dev/.systemd/ask-password-block/%u:%u", major(st.st_rdev), minor(st.st_rdev)) < 0) |
7af53310 LP |
479 | return true; |
480 | ||
481 | fd = open(p, O_WRONLY|O_CLOEXEC|O_NONBLOCK|O_NOCTTY); | |
482 | free(p); | |
483 | ||
484 | if (fd < 0) | |
485 | return true; | |
486 | ||
487 | /* What, we managed to open the pipe? Then this tty is filtered. */ | |
488 | close_nointr_nofail(fd); | |
489 | return false; | |
490 | } | |
491 | ||
ec863ba6 LP |
492 | static int show_passwords(void) { |
493 | DIR *d; | |
494 | struct dirent *de; | |
495 | int r = 0; | |
496 | ||
497 | if (!(d = opendir("/dev/.systemd/ask-password"))) { | |
498 | if (errno == ENOENT) | |
499 | return 0; | |
500 | ||
501 | log_error("opendir(): %m"); | |
502 | return -errno; | |
503 | } | |
504 | ||
505 | while ((de = readdir(d))) { | |
506 | char *p; | |
507 | int q; | |
0ddf1d3a | 508 | char *wall; |
ec863ba6 LP |
509 | |
510 | if (de->d_type != DT_REG) | |
511 | continue; | |
512 | ||
513 | if (ignore_file(de->d_name)) | |
514 | continue; | |
515 | ||
516 | if (!startswith(de->d_name, "ask.")) | |
517 | continue; | |
518 | ||
519 | if (!(p = strappend("/dev/.systemd/ask-password/", de->d_name))) { | |
520 | log_error("Out of memory"); | |
521 | r = -ENOMEM; | |
522 | goto finish; | |
523 | } | |
524 | ||
0ddf1d3a LP |
525 | wall = NULL; |
526 | if ((q = parse_password(p, &wall)) < 0) | |
ec863ba6 LP |
527 | r = q; |
528 | ||
529 | free(p); | |
0ddf1d3a LP |
530 | |
531 | if (wall) { | |
0cf84693 | 532 | utmp_wall(wall, wall_tty_match); |
0ddf1d3a LP |
533 | free(wall); |
534 | } | |
ec863ba6 LP |
535 | } |
536 | ||
537 | finish: | |
538 | if (d) | |
539 | closedir(d); | |
540 | ||
541 | return r; | |
542 | } | |
543 | ||
544 | static int watch_passwords(void) { | |
b9ba604e LP |
545 | enum { |
546 | FD_INOTIFY, | |
547 | FD_SIGNAL, | |
548 | _FD_MAX | |
549 | }; | |
550 | ||
7af53310 | 551 | int notify = -1, signal_fd = -1, tty_block_fd = -1; |
b9ba604e LP |
552 | struct pollfd pollfd[_FD_MAX]; |
553 | sigset_t mask; | |
ec863ba6 LP |
554 | int r; |
555 | ||
0cf84693 | 556 | tty_block_fd = wall_tty_block(); |
7af53310 | 557 | |
ec863ba6 LP |
558 | mkdir_p("/dev/.systemd/ask-password", 0755); |
559 | ||
560 | if ((notify = inotify_init1(IN_CLOEXEC)) < 0) { | |
561 | r = -errno; | |
562 | goto finish; | |
563 | } | |
564 | ||
565 | if (inotify_add_watch(notify, "/dev/.systemd/ask-password", IN_CLOSE_WRITE|IN_MOVED_TO) < 0) { | |
566 | r = -errno; | |
567 | goto finish; | |
568 | } | |
569 | ||
b9ba604e LP |
570 | assert_se(sigemptyset(&mask) == 0); |
571 | sigset_add_many(&mask, SIGINT, SIGTERM, -1); | |
572 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); | |
573 | ||
574 | if ((signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC)) < 0) { | |
575 | log_error("signalfd(): %m"); | |
576 | r = -errno; | |
577 | goto finish; | |
578 | } | |
579 | ||
ec863ba6 | 580 | zero(pollfd); |
b9ba604e LP |
581 | pollfd[FD_INOTIFY].fd = notify; |
582 | pollfd[FD_INOTIFY].events = POLLIN; | |
583 | pollfd[FD_SIGNAL].fd = signal_fd; | |
584 | pollfd[FD_SIGNAL].events = POLLIN; | |
ec863ba6 LP |
585 | |
586 | for (;;) { | |
587 | if ((r = show_passwords()) < 0) | |
0cf84693 | 588 | log_error("Failed to show password: %s", strerror(-r)); |
ec863ba6 | 589 | |
b9ba604e | 590 | if (poll(pollfd, _FD_MAX, -1) < 0) { |
ec863ba6 LP |
591 | |
592 | if (errno == EINTR) | |
593 | continue; | |
594 | ||
595 | r = -errno; | |
596 | goto finish; | |
597 | } | |
598 | ||
b9ba604e | 599 | if (pollfd[FD_INOTIFY].revents != 0) |
ec863ba6 | 600 | flush_fd(notify); |
b9ba604e LP |
601 | |
602 | if (pollfd[FD_SIGNAL].revents != 0) | |
603 | break; | |
ec863ba6 LP |
604 | } |
605 | ||
606 | r = 0; | |
607 | ||
608 | finish: | |
609 | if (notify >= 0) | |
610 | close_nointr_nofail(notify); | |
611 | ||
b9ba604e LP |
612 | if (signal_fd >= 0) |
613 | close_nointr_nofail(signal_fd); | |
614 | ||
7af53310 LP |
615 | if (tty_block_fd >= 0) |
616 | close_nointr_nofail(tty_block_fd); | |
617 | ||
ec863ba6 LP |
618 | return r; |
619 | } | |
620 | ||
621 | static int help(void) { | |
622 | ||
623 | printf("%s [OPTIONS...]\n\n" | |
624 | "Process system password requests.\n\n" | |
e5ebf783 LP |
625 | " -h --help Show this help\n" |
626 | " --list Show pending password requests\n" | |
627 | " --query Process pending password requests\n" | |
628 | " --watch Continously process password requests\n" | |
629 | " --wall Continously forward password requests to wall\n" | |
0cf84693 LP |
630 | " --plymouth Ask question with Plymouth instead of on TTY\n" |
631 | " --console Ask question on /dev/console instead of current TTY\n", | |
ec863ba6 LP |
632 | program_invocation_short_name); |
633 | ||
634 | return 0; | |
635 | } | |
636 | ||
637 | static int parse_argv(int argc, char *argv[]) { | |
638 | ||
639 | enum { | |
640 | ARG_LIST = 0x100, | |
641 | ARG_QUERY, | |
642 | ARG_WATCH, | |
643 | ARG_WALL, | |
0cf84693 LP |
644 | ARG_PLYMOUTH, |
645 | ARG_CONSOLE | |
ec863ba6 LP |
646 | }; |
647 | ||
648 | static const struct option options[] = { | |
e5ebf783 LP |
649 | { "help", no_argument, NULL, 'h' }, |
650 | { "list", no_argument, NULL, ARG_LIST }, | |
651 | { "query", no_argument, NULL, ARG_QUERY }, | |
652 | { "watch", no_argument, NULL, ARG_WATCH }, | |
653 | { "wall", no_argument, NULL, ARG_WALL }, | |
654 | { "plymouth", no_argument, NULL, ARG_PLYMOUTH }, | |
0cf84693 | 655 | { "console", no_argument, NULL, ARG_CONSOLE }, |
e5ebf783 | 656 | { NULL, 0, NULL, 0 } |
ec863ba6 LP |
657 | }; |
658 | ||
659 | int c; | |
660 | ||
661 | assert(argc >= 0); | |
662 | assert(argv); | |
663 | ||
664 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) { | |
665 | ||
666 | switch (c) { | |
667 | ||
668 | case 'h': | |
669 | help(); | |
670 | return 0; | |
671 | ||
672 | case ARG_LIST: | |
673 | arg_action = ACTION_LIST; | |
674 | break; | |
675 | ||
676 | case ARG_QUERY: | |
677 | arg_action = ACTION_QUERY; | |
678 | break; | |
679 | ||
680 | case ARG_WATCH: | |
681 | arg_action = ACTION_WATCH; | |
682 | break; | |
683 | ||
684 | case ARG_WALL: | |
685 | arg_action = ACTION_WALL; | |
686 | break; | |
687 | ||
e5ebf783 LP |
688 | case ARG_PLYMOUTH: |
689 | arg_plymouth = true; | |
690 | break; | |
691 | ||
0cf84693 LP |
692 | case ARG_CONSOLE: |
693 | arg_console = true; | |
694 | break; | |
695 | ||
ec863ba6 LP |
696 | case '?': |
697 | return -EINVAL; | |
698 | ||
699 | default: | |
700 | log_error("Unknown option code %c", c); | |
701 | return -EINVAL; | |
702 | } | |
703 | } | |
704 | ||
705 | if (optind != argc) { | |
706 | help(); | |
707 | return -EINVAL; | |
708 | } | |
709 | ||
710 | return 1; | |
711 | } | |
712 | ||
713 | int main(int argc, char *argv[]) { | |
714 | int r; | |
715 | ||
716 | log_parse_environment(); | |
717 | log_open(); | |
718 | ||
719 | if ((r = parse_argv(argc, argv)) <= 0) | |
720 | goto finish; | |
721 | ||
0cf84693 LP |
722 | if (arg_console) { |
723 | setsid(); | |
724 | release_terminal(); | |
725 | } | |
726 | ||
ec863ba6 LP |
727 | if (arg_action == ACTION_WATCH || |
728 | arg_action == ACTION_WALL) | |
729 | r = watch_passwords(); | |
730 | else | |
731 | r = show_passwords(); | |
732 | ||
96707269 LP |
733 | if (r < 0) |
734 | log_error("Error: %s", strerror(-r)); | |
735 | ||
ec863ba6 LP |
736 | finish: |
737 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
738 | } |