To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to plugins.d/password-prompt.c
- browse files at revision 138
- compare with another revision
- download diff
- download tarball
- view history from revision 138
- Committer: Teddy Hogeborn
- Date: 2008-09-02 06:13:47 UTC
- Revision ID: teddy@fukt.bsnet.se-20080902061347-psw61eqt17j425sq
* plugin-runner.c: Changed short option for "--global-env" to "-G",
changed short option for "--env-for" to "-E",
added new option "--enable" ("-e").
changed short option for "--env-for" to "-E",
added new option "--enable" ("-e").
- files added:
- initramfs-tools-hook-conf
- files removed:
- .bzr-builddeb
- debian
- debian/po
- debian/source
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files renamed:
- plugins.d/mandos-client.c => plugins.d/password-request.c
- plugins.d/mandos-client.xml => plugins.d/password-request.xml
- files modified:
- .bzrignore
added
removed
plugins.d/password-prompt.c
1
/* -*- coding: utf-8; mode: c; mode: orgtbl -*- */
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Password-prompt - Read a password from the terminal and print it
4
*
5
* Copyright © 2008-2019, 2021-2022 Teddy Hogeborn
6
* Copyright © 2008-2019, 2021-2022 Björn Påhlsson
7
*
8
* This file is part of Mandos.
9
*
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.
14
*
15
* Mandos is distributed in the hope that it will be useful, but
3
* Passprompt - Read a password from the terminal and print it
4
*
5
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
6
*
7
* This program is free software: you can redistribute it and/or
8
* modify it under the terms of the GNU General Public License as
9
* published by the Free Software Foundation, either version 3 of the
10
* License, or (at your option) any later version.
11
*
12
* This program is distributed in the hope that it will be useful, but
16
13
* WITHOUT ANY WARRANTY; without even the implied warranty of
17
14
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18
15
* General Public License for more details.
19
16
*
20
17
* You should have received a copy of the GNU General Public License
21
* along with Mandos. If not, see <http://www.gnu.org/licenses/>.
18
* along with this program. If not, see
19
* <http://www.gnu.org/licenses/>.
22
20
*
23
* Contact the authors at <mandos@recompile.se>.
21
* Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
22
* <https://www.fukt.bsnet.se/~teddy/>.
24
23
*/
25
24
26
#define _GNU_SOURCE /* vasprintf(),
27
program_invocation_short_name,
28
asprintf(), getline() */
29
#include <sys/types.h> /* sig_atomic_t, pid_t */
25
#define _GNU_SOURCE /* getline() */
26
27
#include <termios.h> /* struct termios, tcsetattr(),
28
TCSAFLUSH, tcgetattr(), ECHO */
29
#include <unistd.h> /* struct termios, tcsetattr(),
30
STDIN_FILENO, TCSAFLUSH,
31
tcgetattr(), ECHO */
32
#include <signal.h> /* sig_atomic_t, raise(), struct
33
sigaction, sigemptyset(),
34
sigaction(), sigaddset(), SIGINT,
35
SIGQUIT, SIGHUP, SIGTERM */
36
#include <stddef.h> /* NULL, size_t, ssize_t */
37
#include <sys/types.h> /* ssize_t */
38
#include <stdlib.h> /* EXIT_SUCCESS, EXIT_FAILURE,
39
getopt_long, getenv() */
40
#include <stdio.h> /* fprintf(), stderr, getline(),
41
stdin, feof(), perror(), fputc(),
42
stdout, getopt_long */
43
#include <errno.h> /* errno, EINVAL */
44
#include <iso646.h> /* or, not */
30
45
#include <stdbool.h> /* bool, false, true */
31
#include <argp.h> /* argp_program_version,
32
argp_program_bug_address,
33
struct argp_option,
34
struct argp_state, argp_state_help,
35
ARGP_HELP_STD_HELP,
36
ARGP_HELP_EXIT_ERR,
37
ARGP_HELP_EXIT_OK, ARGP_HELP_USAGE,
38
argp_err_exit_status,
39
ARGP_ERR_UNKNOWN, argp_parse(),
40
ARGP_IN_ORDER, ARGP_NO_HELP */
41
#include <stdarg.h> /* va_list, va_start(), vfprintf() */
42
#include <stdio.h> /* vasprintf(), fprintf(), stderr,
43
vfprintf(), asprintf(), getline(),
44
stdin, feof(), clearerr(),
45
fputc() */
46
#include <errno.h> /* program_invocation_short_name,
47
errno, ENOENT, error_t, ENOMEM,
48
EINVAL, EBADF, ENOTTY, EFAULT,
49
EFBIG, EIO, ENOSPC, EINTR */
50
#include <string.h> /* strerror(), strrchr(), strcmp() */
51
#include <error.h> /* error() */
52
#include <stdlib.h> /* free(), realloc(), EXIT_SUCCESS,
53
EXIT_FAILURE, getenv() */
54
#include <unistd.h> /* access(), R_OK, ssize_t, close(),
55
read(), STDIN_FILENO, write(),
56
STDOUT_FILENO */
57
#include <dirent.h> /* struct dirent, scandir(),
58
alphasort() */
59
#include <inttypes.h> /* uintmax_t, strtoumax() */
60
#include <iso646.h> /* or, and, not */
61
#include <fcntl.h> /* open(), O_RDONLY */
62
#include <stddef.h> /* NULL, size_t */
63
#include <termios.h> /* struct termios, tcgetattr(),
64
tcflag_t, ECHO, tcsetattr(),
65
TCSAFLUSH */
66
#include <signal.h> /* struct sigaction, sigemptyset(),
67
sigaddset(), SIGINT, SIGHUP,
68
SIGTERM, SIG_IGN, SIG_DFL,
69
raise() */
70
#include <sysexits.h> /* EX_OSERR, EX_USAGE, EX_UNAVAILABLE,
71
EX_IOERR, EX_OSFILE, EX_OK */
46
#include <string.h> /* strlen, rindex, strncmp, strcmp */
47
#include <argp.h> /* struct argp_option, struct
48
argp_state, struct argp,
49
argp_parse(), error_t,
50
ARGP_KEY_ARG, ARGP_KEY_END,
51
ARGP_ERR_UNKNOWN */
72
52
73
volatile sig_atomic_t quit_now = 0;
74
int signal_received;
53
volatile bool quit_now = false;
75
54
bool debug = false;
76
const char *argp_program_version = "password-prompt " VERSION;
77
const char *argp_program_bug_address = "<mandos@recompile.se>";
78
79
/* Needed for conflict resolution */
80
const char plymouth_name[] = "plymouthd";
81
82
/* Function to use when printing errors */
83
__attribute__((format (gnu_printf, 3, 4)))
84
void error_plus(int status, int errnum, const char *formatstring,
85
...){
86
va_list ap;
87
char *text;
88
int ret;
89
90
va_start(ap, formatstring);
91
ret = vasprintf(&text, formatstring, ap);
92
if(ret == -1){
93
fprintf(stderr, "Mandos plugin %s: ",
94
program_invocation_short_name);
95
vfprintf(stderr, formatstring, ap);
96
fprintf(stderr, ": %s\n", strerror(errnum));
97
error(status, errno, "vasprintf while printing error");
98
return;
99
}
100
fprintf(stderr, "Mandos plugin ");
101
error(status, errnum, "%s", text);
102
free(text);
103
}
104
105
static void termination_handler(int signum){
106
if(quit_now){
107
return;
108
}
109
quit_now = 1;
110
signal_received = signum;
111
}
112
113
bool conflict_detection(void){
114
115
/* plymouth conflicts with password-prompt since both want to read
116
from the terminal. Password-prompt will exit if it detects
117
plymouth since plymouth performs the same functionality.
118
*/
119
if(access("/run/plymouth/pid", R_OK) == 0){
120
return true;
121
}
122
123
__attribute__((nonnull))
124
int is_plymouth(const struct dirent *proc_entry){
125
int ret;
126
int cl_fd;
127
{
128
uintmax_t proc_id;
129
char *tmp;
130
errno = 0;
131
proc_id = strtoumax(proc_entry->d_name, &tmp, 10);
132
133
if(errno != 0 or *tmp != '\0'
134
or proc_id != (uintmax_t)((pid_t)proc_id)){
135
return 0;
136
}
137
}
138
139
char *cmdline_filename;
140
ret = asprintf(&cmdline_filename, "/proc/%s/cmdline",
141
proc_entry->d_name);
142
if(ret == -1){
143
error_plus(0, errno, "asprintf");
144
return 0;
145
}
146
147
/* Open /proc/<pid>/cmdline */
148
cl_fd = open(cmdline_filename, O_RDONLY);
149
free(cmdline_filename);
150
if(cl_fd == -1){
151
if(errno != ENOENT){
152
error_plus(0, errno, "open");
153
}
154
return 0;
155
}
156
157
char *cmdline = NULL;
158
{
159
size_t cmdline_len = 0;
160
size_t cmdline_allocated = 0;
161
char *tmp;
162
const size_t blocksize = 1024;
163
ssize_t sret;
164
do {
165
/* Allocate more space? */
166
if(cmdline_len + blocksize + 1 > cmdline_allocated){
167
tmp = realloc(cmdline, cmdline_allocated + blocksize + 1);
168
if(tmp == NULL){
169
error_plus(0, errno, "realloc");
170
free(cmdline);
171
close(cl_fd);
172
return 0;
173
}
174
cmdline = tmp;
175
cmdline_allocated += blocksize;
176
}
177
178
/* Read data */
179
sret = read(cl_fd, cmdline + cmdline_len,
180
cmdline_allocated - cmdline_len);
181
if(sret == -1){
182
error_plus(0, errno, "read");
183
free(cmdline);
184
close(cl_fd);
185
return 0;
186
}
187
cmdline_len += (size_t)sret;
188
} while(sret != 0);
189
ret = close(cl_fd);
190
if(ret == -1){
191
error_plus(0, errno, "close");
192
free(cmdline);
193
return 0;
194
}
195
cmdline[cmdline_len] = '\0'; /* Make sure it is terminated */
196
}
197
/* we now have cmdline */
198
199
/* get basename */
200
char *cmdline_base = strrchr(cmdline, '/');
201
if(cmdline_base != NULL){
202
cmdline_base += 1; /* skip the slash */
203
} else {
204
cmdline_base = cmdline;
205
}
206
207
if(strcmp(cmdline_base, plymouth_name) != 0){
208
if(debug){
209
fprintf(stderr, "\"%s\" is not \"%s\"\n", cmdline_base,
210
plymouth_name);
211
}
212
free(cmdline);
213
return 0;
214
}
215
if(debug){
216
fprintf(stderr, "\"%s\" equals \"%s\"\n", cmdline_base,
217
plymouth_name);
218
}
219
free(cmdline);
220
return 1;
221
}
222
223
struct dirent **direntries = NULL;
224
int ret;
225
ret = scandir("/proc", &direntries, is_plymouth, alphasort);
226
if(ret == -1){
227
error_plus(1, errno, "scandir");
228
}
229
{
230
int i = ret;
231
while(i--){
232
free(direntries[i]);
233
}
234
}
235
free(direntries);
236
return ret > 0;
237
}
238
55
const char *argp_program_version = "password-prompt 1.0";
56
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
57
58
static void termination_handler(__attribute__((unused))int signum){
59
quit_now = true;
60
}
239
61
240
62
int main(int argc, char **argv){
241
ssize_t sret;
242
int ret;
63
ssize_t ret;
243
64
size_t n;
244
65
struct termios t_new, t_old;
245
66
char *buffer = NULL;
246
67
char *prefix = NULL;
247
char *prompt = NULL;
248
68
int status = EXIT_SUCCESS;
249
69
struct sigaction old_action,
250
70
new_action = { .sa_handler = termination_handler,
254
74
{ .name = "prefix", .key = 'p',
255
75
.arg = "PREFIX", .flags = 0,
256
76
.doc = "Prefix shown before the prompt", .group = 2 },
257
{ .name = "prompt", .key = 129,
258
.arg = "PROMPT", .flags = 0,
259
.doc = "The prompt to show", .group = 2 },
260
77
{ .name = "debug", .key = 128,
261
78
.doc = "Debug mode", .group = 3 },
262
/*
263
* These reproduce what we would get without ARGP_NO_HELP
264
*/
265
{ .name = "help", .key = '?',
266
.doc = "Give this help list", .group = -1 },
267
{ .name = "usage", .key = -3,
268
.doc = "Give a short usage message", .group = -1 },
269
{ .name = "version", .key = 'V',
270
.doc = "Print program version", .group = -1 },
271
79
{ .name = NULL }
272
80
};
273
274
__attribute__((nonnull(3)))
275
error_t parse_opt (int key, char *arg, struct argp_state *state){
276
errno = 0;
277
switch (key){
278
case 'p': /* --prefix */
81
82
error_t parse_opt (int key, char *arg, struct argp_state *state) {
83
/* Get the INPUT argument from `argp_parse', which we know is a
84
pointer to our plugin list pointer. */
85
switch (key) {
86
case 'p':
279
87
prefix = arg;
280
88
break;
281
case 128: /* --debug */
89
case 128:
282
90
debug = true;
283
91
break;
284
case 129: /* --prompt */
285
prompt = arg;
92
case ARGP_KEY_ARG:
93
argp_usage (state);
286
94
break;
287
/*
288
* These reproduce what we would get without ARGP_NO_HELP
289
*/
290
case '?': /* --help */
291
argp_state_help(state, state->out_stream,
292
(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
293
& ~(unsigned int)ARGP_HELP_EXIT_OK);
294
__builtin_unreachable();
295
case -3: /* --usage */
296
argp_state_help(state, state->out_stream,
297
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
298
__builtin_unreachable();
299
case 'V': /* --version */
300
fprintf(state->out_stream, "%s\n", argp_program_version);
301
exit(argp_err_exit_status);
95
case ARGP_KEY_END:
302
96
break;
303
97
default:
304
98
return ARGP_ERR_UNKNOWN;
305
99
}
306
return errno;
100
return 0;
307
101
}
308
102
309
103
struct argp argp = { .options = options, .parser = parse_opt,
310
104
.args_doc = "",
311
105
.doc = "Mandos password-prompt -- Read and"
312
106
" output a password" };
313
ret = argp_parse(&argp, argc, argv,
314
ARGP_IN_ORDER | ARGP_NO_HELP, NULL, NULL);
315
switch(ret){
316
case 0:
317
break;
318
case ENOMEM:
319
default:
320
errno = ret;
321
error_plus(0, errno, "argp_parse");
322
return EX_OSERR;
323
case EINVAL:
324
return EX_USAGE;
107
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
108
if (ret == ARGP_ERR_UNKNOWN){
109
fprintf(stderr, "Unknown error while parsing arguments\n");
110
return EXIT_FAILURE;
325
111
}
326
112
}
327
328
if(debug){
113
114
if (debug){
329
115
fprintf(stderr, "Starting %s\n", argv[0]);
330
116
}
331
332
if(conflict_detection()){
333
if(debug){
334
fprintf(stderr, "Stopping %s because of conflict\n", argv[0]);
335
}
336
return EXIT_FAILURE;
337
}
338
339
if(debug){
117
if (debug){
340
118
fprintf(stderr, "Storing current terminal attributes\n");
341
119
}
342
120
343
if(tcgetattr(STDIN_FILENO, &t_old) != 0){
344
int e = errno;
345
error_plus(0, errno, "tcgetattr");
346
switch(e){
347
case EBADF:
348
case ENOTTY:
349
return EX_UNAVAILABLE;
350
default:
351
return EX_OSERR;
352
}
121
if (tcgetattr(STDIN_FILENO, &t_old) != 0){
122
perror("tcgetattr");
123
return EXIT_FAILURE;
353
124
}
354
125
355
126
sigemptyset(&new_action.sa_mask);
356
ret = sigaddset(&new_action.sa_mask, SIGINT);
357
if(ret == -1){
358
error_plus(0, errno, "sigaddset");
359
return EX_OSERR;
360
}
361
ret = sigaddset(&new_action.sa_mask, SIGHUP);
362
if(ret == -1){
363
error_plus(0, errno, "sigaddset");
364
return EX_OSERR;
365
}
366
ret = sigaddset(&new_action.sa_mask, SIGTERM);
367
if(ret == -1){
368
error_plus(0, errno, "sigaddset");
369
return EX_OSERR;
370
}
371
/* Need to check if the handler is SIG_IGN before handling:
372
| [[info:libc:Initial Signal Actions]] |
373
| [[info:libc:Basic Signal Handling]] |
374
*/
127
sigaddset(&new_action.sa_mask, SIGINT);
128
sigaddset(&new_action.sa_mask, SIGHUP);
129
sigaddset(&new_action.sa_mask, SIGTERM);
375
130
ret = sigaction(SIGINT, NULL, &old_action);
376
131
if(ret == -1){
377
error_plus(0, errno, "sigaction");
378
return EX_OSERR;
132
perror("sigaction");
133
return EXIT_FAILURE;
379
134
}
380
if(old_action.sa_handler != SIG_IGN){
135
if (old_action.sa_handler != SIG_IGN){
381
136
ret = sigaction(SIGINT, &new_action, NULL);
382
137
if(ret == -1){
383
error_plus(0, errno, "sigaction");
384
return EX_OSERR;
138
perror("sigaction");
139
return EXIT_FAILURE;
385
140
}
386
141
}
387
142
ret = sigaction(SIGHUP, NULL, &old_action);
388
143
if(ret == -1){
389
error_plus(0, errno, "sigaction");
390
return EX_OSERR;
144
perror("sigaction");
145
return EXIT_FAILURE;
391
146
}
392
if(old_action.sa_handler != SIG_IGN){
147
if (old_action.sa_handler != SIG_IGN){
393
148
ret = sigaction(SIGHUP, &new_action, NULL);
394
149
if(ret == -1){
395
error_plus(0, errno, "sigaction");
396
return EX_OSERR;
150
perror("sigaction");
151
return EXIT_FAILURE;
397
152
}
398
153
}
399
154
ret = sigaction(SIGTERM, NULL, &old_action);
400
155
if(ret == -1){
401
error_plus(0, errno, "sigaction");
402
return EX_OSERR;
156
perror("sigaction");
157
return EXIT_FAILURE;
403
158
}
404
if(old_action.sa_handler != SIG_IGN){
159
if (old_action.sa_handler != SIG_IGN){
405
160
ret = sigaction(SIGTERM, &new_action, NULL);
406
161
if(ret == -1){
407
error_plus(0, errno, "sigaction");
408
return EX_OSERR;
162
perror("sigaction");
163
return EXIT_FAILURE;
409
164
}
410
165
}
411
166
412
167
413
if(debug){
168
if (debug){
414
169
fprintf(stderr, "Removing echo flag from terminal attributes\n");
415
170
}
416
171
417
172
t_new = t_old;
418
t_new.c_lflag &= ~(tcflag_t)ECHO;
419
if(tcsetattr(STDIN_FILENO, TCSAFLUSH, &t_new) != 0){
420
int e = errno;
421
error_plus(0, errno, "tcsetattr-echo");
422
switch(e){
423
case EBADF:
424
case ENOTTY:
425
return EX_UNAVAILABLE;
426
case EINVAL:
427
default:
428
return EX_OSERR;
429
}
173
t_new.c_lflag &= ~ECHO;
174
if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &t_new) != 0){
175
perror("tcsetattr-echo");
176
return EXIT_FAILURE;
430
177
}
431
432
if(debug){
178
179
if (debug){
433
180
fprintf(stderr, "Waiting for input from stdin \n");
434
181
}
435
182
while(true){
436
if(quit_now){
183
if (quit_now){
437
184
if(debug){
438
185
fprintf(stderr, "Interrupted by signal, exiting.\n");
439
186
}
444
191
if(prefix){
445
192
fprintf(stderr, "%s ", prefix);
446
193
}
447
if(prompt != NULL){
448
fprintf(stderr, "%s: ", prompt);
449
} else {
450
const char *cryptsource = getenv("CRYPTTAB_SOURCE");
451
const char *crypttarget = getenv("CRYPTTAB_NAME");
452
/* Before cryptsetup 1.1.0~rc2 */
453
if(cryptsource == NULL){
454
cryptsource = getenv("cryptsource");
455
}
456
if(crypttarget == NULL){
457
crypttarget = getenv("crypttarget");
458
}
459
const char *const prompt1 = "Unlocking the disk";
460
const char *const prompt2 = "Enter passphrase";
194
{
195
const char *cryptsource = getenv("cryptsource");
196
const char *crypttarget = getenv("crypttarget");
197
const char *const prompt
198
= "Enter passphrase to unlock the disk";
461
199
if(cryptsource == NULL){
462
200
if(crypttarget == NULL){
463
fprintf(stderr, "%s to unlock the disk: ", prompt2);
201
fprintf(stderr, "%s: ", prompt);
464
202
} else {
465
fprintf(stderr, "%s (%s)\n%s: ", prompt1, crypttarget,
466
prompt2);
203
fprintf(stderr, "%s (%s): ", prompt, crypttarget);
467
204
}
468
205
} else {
469
206
if(crypttarget == NULL){
470
fprintf(stderr, "%s %s\n%s: ", prompt1, cryptsource,
471
prompt2);
207
fprintf(stderr, "%s %s: ", prompt, cryptsource);
472
208
} else {
473
fprintf(stderr, "%s %s (%s)\n%s: ", prompt1, cryptsource,
474
crypttarget, prompt2);
209
fprintf(stderr, "%s %s (%s): ", prompt, cryptsource,
210
crypttarget);
475
211
}
476
212
}
477
213
}
478
sret = getline(&buffer, &n, stdin);
479
if(sret > 0){
214
ret = getline(&buffer, &n, stdin);
215
if (ret > 0){
480
216
status = EXIT_SUCCESS;
481
217
/* Make n = data size instead of allocated buffer size */
482
n = (size_t)sret;
483
/* Strip final newline */
484
if(n > 0 and buffer[n-1] == '\n'){
485
buffer[n-1] = '\0'; /* not strictly necessary */
486
n--;
487
}
218
n = (size_t)ret;
488
219
size_t written = 0;
489
220
while(written < n){
490
sret = write(STDOUT_FILENO, buffer + written, n - written);
491
if(sret < 0){
492
int e = errno;
493
error_plus(0, errno, "write");
494
switch(e){
495
case EBADF:
496
case EFAULT:
497
case EINVAL:
498
case EFBIG:
499
case EIO:
500
case ENOSPC:
501
default:
502
status = EX_IOERR;
503
break;
504
case EINTR:
505
status = EXIT_FAILURE;
506
break;
507
}
508
break;
509
}
510
written += (size_t)sret;
511
}
512
sret = close(STDOUT_FILENO);
513
if(sret == -1){
514
int e = errno;
515
error_plus(0, errno, "close");
516
switch(e){
517
case EBADF:
518
status = EX_OSFILE;
519
break;
520
case EIO:
521
default:
522
status = EX_IOERR;
523
break;
524
}
221
ret = write(STDOUT_FILENO, buffer + written, n - written);
222
if(ret < 0){
223
perror("write");
224
status = EXIT_FAILURE;
225
break;
226
}
227
written += (size_t)ret;
525
228
}
526
229
break;
527
230
}
528
if(sret < 0){
529
int e = errno;
530
if(errno != EINTR){
531
if(not feof(stdin)){
532
error_plus(0, errno, "getline");
533
switch(e){
534
case EBADF:
535
status = EX_UNAVAILABLE;
536
break;
537
case EIO:
538
case EINVAL:
539
default:
540
status = EX_IOERR;
541
break;
542
}
543
break;
544
} else {
545
clearerr(stdin);
546
}
231
if (ret < 0){
232
if (errno != EINTR and not feof(stdin)){
233
perror("getline");
234
status = EXIT_FAILURE;
235
break;
547
236
}
548
237
}
549
/* if(sret == 0), then the only sensible thing to do is to retry
550
to read from stdin */
238
/* if(ret == 0), then the only sensible thing to do is to retry to
239
read from stdin */
551
240
fputc('\n', stderr);
552
241
if(debug and not quit_now){
553
/* If quit_now is nonzero, we were interrupted by a signal, and
242
/* If quit_now is true, we were interrupted by a signal, and
554
243
will print that later, so no need to show this too. */
555
244
fprintf(stderr, "getline() returned 0, retrying.\n");
556
245
}
557
246
}
558
247
559
free(buffer);
560
561
if(debug){
248
if (debug){
562
249
fprintf(stderr, "Restoring terminal attributes\n");
563
250
}
564
if(tcsetattr(STDIN_FILENO, TCSAFLUSH, &t_old) != 0){
565
error_plus(0, errno, "tcsetattr+echo");
566
}
567
568
if(quit_now){
569
sigemptyset(&old_action.sa_mask);
570
old_action.sa_handler = SIG_DFL;
571
ret = sigaction(signal_received, &old_action, NULL);
572
if(ret == -1){
573
error_plus(0, errno, "sigaction");
574
}
575
raise(signal_received);
576
}
577
578
if(debug){
251
if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &t_old) != 0){
252
perror("tcsetattr+echo");
253
}
254
255
if (debug){
579
256
fprintf(stderr, "%s is exiting with status %d\n", argv[0],
580
257
status);
581
258
}
582
if(status == EXIT_SUCCESS or status == EX_OK){
583
fputc('\n', stderr);
584
}
585
259
586
260
return status;
587
261
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0