3
3
* Password-prompt - Read a password from the terminal and print it
5
* Copyright © 2008-2011 Teddy Hogeborn
6
* Copyright © 2008-2011 Björn Påhlsson
8
* This program is free software: you can redistribute it and/or
9
* modify it under the terms of the GNU General Public License as
10
* published by the Free Software Foundation, either version 3 of the
11
* License, or (at your option) any later version.
13
* This program is distributed in the hope that it will be useful, but
5
* Copyright © 2008-2019 Teddy Hogeborn
6
* Copyright © 2008-2019 Björn Påhlsson
8
* This file is part of Mandos.
10
* Mandos is free software: you can redistribute it and/or modify it
11
* under the terms of the GNU General Public License as published by
12
* the Free Software Foundation, either version 3 of the License, or
13
* (at your option) any later version.
15
* Mandos is distributed in the hope that it will be useful, but
14
16
* WITHOUT ANY WARRANTY; without even the implied warranty of
15
17
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16
18
* General Public License for more details.
18
20
* You should have received a copy of the GNU General Public License
19
* along with this program. If not, see
20
* <http://www.gnu.org/licenses/>.
21
* along with Mandos. If not, see <http://www.gnu.org/licenses/>.
22
23
* Contact the authors at <mandos@recompile.se>.
83
84
va_start(ap, formatstring);
84
85
ret = vasprintf(&text, formatstring, ap);
86
87
fprintf(stderr, "Mandos plugin %s: ",
87
88
program_invocation_short_name);
88
89
vfprintf(stderr, formatstring, ap);
89
fprintf(stderr, ": ");
90
fprintf(stderr, "%s\n", strerror(errnum));
90
fprintf(stderr, ": %s\n", strerror(errnum));
91
91
error(status, errno, "vasprintf while printing error");
110
110
from the terminal. Password-prompt will exit if it detects
111
111
plymouth since plymouth performs the same functionality.
113
__attribute__((nonnull))
113
114
int is_plymouth(const struct dirent *proc_entry){
120
maxvalue = strtoumax(proc_entry->d_name, &tmp, 10);
121
proc_id = strtoumax(proc_entry->d_name, &tmp, 10);
122
123
if(errno != 0 or *tmp != '\0'
123
or maxvalue != (uintmax_t)((pid_t)maxvalue)){
124
or proc_id != (uintmax_t)((pid_t)proc_id)){
129
130
ret = asprintf(&cmdline_filename, "/proc/%s/cmdline",
130
131
proc_entry->d_name);
132
error(0, errno, "asprintf");
133
error_plus(0, errno, "asprintf");
155
156
if(cmdline_len + blocksize + 1 > cmdline_allocated){
156
157
tmp = realloc(cmdline, cmdline_allocated + blocksize + 1);
158
error(0, errno, "realloc");
159
error_plus(0, errno, "realloc");
168
169
sret = read(cl_fd, cmdline + cmdline_len,
169
170
cmdline_allocated - cmdline_len);
171
error(0, errno, "read");
172
error_plus(0, errno, "read");
212
213
struct dirent **direntries = NULL;
214
215
ret = scandir("/proc", &direntries, is_plymouth, alphasort);
216
error(1, errno, "scandir");
217
error_plus(1, errno, "scandir");
218
225
free(direntries);
266
274
argp_state_help(state, state->out_stream,
267
275
(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
268
276
& ~(unsigned int)ARGP_HELP_EXIT_OK);
277
__builtin_unreachable();
269
278
case -3: /* --usage */
270
279
argp_state_help(state, state->out_stream,
271
280
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
281
__builtin_unreachable();
272
282
case 'V': /* --version */
273
283
fprintf(state->out_stream, "%s\n", argp_program_version);
274
284
exit(argp_err_exit_status);
302
312
fprintf(stderr, "Starting %s\n", argv[0]);
305
if (conflict_detection()){
315
if(conflict_detection()){
307
317
fprintf(stderr, "Stopping %s because of conflict\n", argv[0]);
316
326
if(tcgetattr(STDIN_FILENO, &t_old) != 0){
318
error(0, errno, "tcgetattr");
328
error_plus(0, errno, "tcgetattr");
328
338
sigemptyset(&new_action.sa_mask);
329
339
ret = sigaddset(&new_action.sa_mask, SIGINT);
331
error(0, errno, "sigaddset");
341
error_plus(0, errno, "sigaddset");
334
344
ret = sigaddset(&new_action.sa_mask, SIGHUP);
336
error(0, errno, "sigaddset");
346
error_plus(0, errno, "sigaddset");
339
349
ret = sigaddset(&new_action.sa_mask, SIGTERM);
341
error(0, errno, "sigaddset");
351
error_plus(0, errno, "sigaddset");
344
354
/* Need to check if the handler is SIG_IGN before handling:
348
358
ret = sigaction(SIGINT, NULL, &old_action);
350
error(0, errno, "sigaction");
360
error_plus(0, errno, "sigaction");
353
363
if(old_action.sa_handler != SIG_IGN){
354
364
ret = sigaction(SIGINT, &new_action, NULL);
356
error(0, errno, "sigaction");
366
error_plus(0, errno, "sigaction");
360
370
ret = sigaction(SIGHUP, NULL, &old_action);
362
error(0, errno, "sigaction");
372
error_plus(0, errno, "sigaction");
365
375
if(old_action.sa_handler != SIG_IGN){
366
376
ret = sigaction(SIGHUP, &new_action, NULL);
368
error(0, errno, "sigaction");
378
error_plus(0, errno, "sigaction");
372
382
ret = sigaction(SIGTERM, NULL, &old_action);
374
error(0, errno, "sigaction");
384
error_plus(0, errno, "sigaction");
377
387
if(old_action.sa_handler != SIG_IGN){
378
388
ret = sigaction(SIGTERM, &new_action, NULL);
380
error(0, errno, "sigaction");
390
error_plus(0, errno, "sigaction");
391
401
t_new.c_lflag &= ~(tcflag_t)ECHO;
392
402
if(tcsetattr(STDIN_FILENO, TCSAFLUSH, &t_new) != 0){
394
error(0, errno, "tcsetattr-echo");
404
error_plus(0, errno, "tcsetattr-echo");
461
471
sret = write(STDOUT_FILENO, buffer + written, n - written);
464
error(0, errno, "write");
474
error_plus(0, errno, "write");
483
493
sret = close(STDOUT_FILENO);
486
error(0, errno, "close");
496
error_plus(0, errno, "close");
489
499
status = EX_OSFILE;
501
511
if(errno != EINTR and not feof(stdin)){
502
error(0, errno, "getline");
512
error_plus(0, errno, "getline");
505
515
status = EX_UNAVAILABLE;
528
539
fprintf(stderr, "Restoring terminal attributes\n");
530
541
if(tcsetattr(STDIN_FILENO, TCSAFLUSH, &t_old) != 0){
531
error(0, errno, "tcsetattr+echo");
542
error_plus(0, errno, "tcsetattr+echo");
536
547
old_action.sa_handler = SIG_DFL;
537
548
ret = sigaction(signal_received, &old_action, NULL);
539
error(0, errno, "sigaction");
550
error_plus(0, errno, "sigaction");
541
552
raise(signal_received);