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- Committer: teddy at bsnet
- Date: 2010-09-24 18:33:39 UTC
- Revision ID: teddy@fukt.bsnet.se-20100924183339-268yiitwo9yjp3gj
* plugins.d/plymouth.c: Break lines, fix whitespace. Remove
unnecessary casts.
(main) Exit with EX_UNAVAILABLE if plymouth is not found. Use first
argument of error() where useful. Simplify logic of checking
results of running the ask-for-password command. Simplify
assigning value to "plymouthd_argv".
unnecessary casts.
(main) Exit with EX_UNAVAILABLE if plymouth is not found. Use first
argument of error() where useful. Simplify logic of checking
results of running the ask-for-password command. Simplify
assigning value to "plymouthd_argv".
- files added:
- .bzr-builddeb
- debian
- debian/po
- files removed:
- network-protocol.txt
- files renamed:
- mandos-client.c => plugin-runner.c
- mandos-client.xml => plugin-runner.xml
- plugins.d/password-request.c => plugins.d/mandos-client.c
- plugins.d/password-request.xml => plugins.d/mandos-client.xml
- files modified:
- Makefile
added
removed
plugins.d/password-prompt.c
1
/* -*- coding: utf-8 -*- */
1
/* -*- coding: utf-8; mode: c; mode: orgtbl -*- */
2
2
/*
3
* Passprompt - Read a password from the terminal and print it
4
*
5
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
3
* Password-prompt - Read a password from the terminal and print it
4
*
5
* Copyright © 2008,2009 Teddy Hogeborn
6
* Copyright © 2008,2009 Björn Påhlsson
6
7
*
7
8
* This program is free software: you can redistribute it and/or
8
9
* modify it under the terms of the GNU General Public License as
18
19
* along with this program. If not, see
19
20
* <http://www.gnu.org/licenses/>.
20
21
*
21
* Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
22
* <https://www.fukt.bsnet.se/~teddy/>.
22
* Contact the authors at <mandos@fukt.bsnet.se>.
23
23
*/
24
24
25
25
#define _GNU_SOURCE /* getline() */
32
32
#include <signal.h> /* sig_atomic_t, raise(), struct
33
33
sigaction, sigemptyset(),
34
34
sigaction(), sigaddset(), SIGINT,
35
SIGQUIT, SIGHUP, SIGTERM */
35
SIGQUIT, SIGHUP, SIGTERM,
36
raise() */
36
37
#include <stddef.h> /* NULL, size_t, ssize_t */
37
38
#include <sys/types.h> /* ssize_t */
38
39
#include <stdlib.h> /* EXIT_SUCCESS, EXIT_FAILURE,
39
getopt_long */
40
getenv() */
40
41
#include <stdio.h> /* fprintf(), stderr, getline(),
41
stdin, feof(), perror(), fputc(),
42
stdout, getopt_long */
43
#include <errno.h> /* errno, EINVAL */
42
stdin, feof(), fputc()
43
*/
44
#include <errno.h> /* errno, EBADF, ENOTTY, EINVAL,
45
EFAULT, EFBIG, EIO, ENOSPC, EINTR
46
*/
47
#include <error.h> /* error() */
44
48
#include <iso646.h> /* or, not */
45
49
#include <stdbool.h> /* bool, false, true */
46
#include <string.h> /* strlen, rindex, strncmp, strcmp */
50
#include <string.h> /* strlen, rindex */
47
51
#include <argp.h> /* struct argp_option, struct
48
52
argp_state, struct argp,
49
53
argp_parse(), error_t,
50
54
ARGP_KEY_ARG, ARGP_KEY_END,
51
55
ARGP_ERR_UNKNOWN */
56
#include <sysexits.h> /* EX_SOFTWARE, EX_OSERR,
57
EX_UNAVAILABLE, EX_IOERR, EX_OK */
52
58
53
volatile bool quit_now = false;
59
volatile sig_atomic_t quit_now = 0;
60
int signal_received;
54
61
bool debug = false;
55
const char *argp_program_version = "password-prompt 1.0";
62
const char *argp_program_version = "password-prompt " VERSION;
56
63
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
57
64
58
static void termination_handler(__attribute__((unused))int signum){
59
quit_now = true;
65
static void termination_handler(int signum){
66
if(quit_now){
67
return;
68
}
69
quit_now = 1;
70
signal_received = signum;
60
71
}
61
72
62
73
int main(int argc, char **argv){
63
ssize_t ret;
74
ssize_t sret;
75
int ret;
64
76
size_t n;
65
77
struct termios t_new, t_old;
66
78
char *buffer = NULL;
73
85
struct argp_option options[] = {
74
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{ .name = "prefix", .key = 'p',
75
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.arg = "PREFIX", .flags = 0,
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.doc = "Prefix used before the passprompt", .group = 2 },
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.doc = "Prefix shown before the prompt", .group = 2 },
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{ .name = "debug", .key = 128,
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.doc = "Debug mode", .group = 3 },
91
/*
92
* These reproduce what we would get without ARGP_NO_HELP
93
*/
94
{ .name = "help", .key = '?',
95
.doc = "Give this help list", .group = -1 },
96
{ .name = "usage", .key = -3,
97
.doc = "Give a short usage message", .group = -1 },
98
{ .name = "version", .key = 'V',
99
.doc = "Print program version", .group = -1 },
79
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{ .name = NULL }
80
101
};
81
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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) {
102
103
error_t parse_opt (int key, char *arg, struct argp_state *state){
104
errno = 0;
105
switch (key){
86
106
case 'p':
87
107
prefix = arg;
88
108
break;
89
109
case 128:
90
110
debug = true;
91
111
break;
92
case ARGP_KEY_ARG:
93
argp_usage (state);
94
break;
95
case ARGP_KEY_END:
112
/*
113
* These reproduce what we would get without ARGP_NO_HELP
114
*/
115
case '?': /* --help */
116
argp_state_help(state, state->out_stream,
117
(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
118
& ~(unsigned int)ARGP_HELP_EXIT_OK);
119
case -3: /* --usage */
120
argp_state_help(state, state->out_stream,
121
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
122
case 'V': /* --version */
123
fprintf(state->out_stream, "%s\n", argp_program_version);
124
exit(argp_err_exit_status);
96
125
break;
97
126
default:
98
127
return ARGP_ERR_UNKNOWN;
99
128
}
100
return 0;
129
return errno;
101
130
}
102
131
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132
struct argp argp = { .options = options, .parser = parse_opt,
104
133
.args_doc = "",
105
.doc = "Mandos Passprompt -- Provides a passprompt" };
106
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
107
if (ret == ARGP_ERR_UNKNOWN){
108
fprintf(stderr, "Unkown error while parsing arguments\n");
109
return EXIT_FAILURE;
134
.doc = "Mandos password-prompt -- Read and"
135
" output a password" };
136
ret = argp_parse(&argp, argc, argv,
137
ARGP_IN_ORDER | ARGP_NO_HELP, NULL, NULL);
138
switch(ret){
139
case 0:
140
break;
141
case ENOMEM:
142
default:
143
errno = ret;
144
error(0, errno, "argp_parse");
145
return EX_OSERR;
146
case EINVAL:
147
return EX_USAGE;
110
148
}
111
149
}
112
113
if (debug){
150
151
if(debug){
114
152
fprintf(stderr, "Starting %s\n", argv[0]);
115
153
}
116
if (debug){
154
if(debug){
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fprintf(stderr, "Storing current terminal attributes\n");
118
156
}
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157
120
if (tcgetattr(STDIN_FILENO, &t_old) != 0){
121
return EXIT_FAILURE;
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if(tcgetattr(STDIN_FILENO, &t_old) != 0){
159
int e = errno;
160
error(0, errno, "tcgetattr");
161
switch(e){
162
case EBADF:
163
case ENOTTY:
164
return EX_UNAVAILABLE;
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default:
166
return EX_OSERR;
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}
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}
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sigemptyset(&new_action.sa_mask);
125
sigaddset(&new_action.sa_mask, SIGINT);
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sigaddset(&new_action.sa_mask, SIGHUP);
127
sigaddset(&new_action.sa_mask, SIGTERM);
171
ret = sigaddset(&new_action.sa_mask, SIGINT);
172
if(ret == -1){
173
error(0, errno, "sigaddset");
174
return EX_OSERR;
175
}
176
ret = sigaddset(&new_action.sa_mask, SIGHUP);
177
if(ret == -1){
178
error(0, errno, "sigaddset");
179
return EX_OSERR;
180
}
181
ret = sigaddset(&new_action.sa_mask, SIGTERM);
182
if(ret == -1){
183
error(0, errno, "sigaddset");
184
return EX_OSERR;
185
}
186
/* Need to check if the handler is SIG_IGN before handling:
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| [[info:libc:Initial Signal Actions]] |
188
| [[info:libc:Basic Signal Handling]] |
189
*/
128
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ret = sigaction(SIGINT, NULL, &old_action);
129
191
if(ret == -1){
130
perror("sigaction");
131
return EXIT_FAILURE;
192
error(0, errno, "sigaction");
193
return EX_OSERR;
132
194
}
133
if (old_action.sa_handler != SIG_IGN){
195
if(old_action.sa_handler != SIG_IGN){
134
196
ret = sigaction(SIGINT, &new_action, NULL);
135
197
if(ret == -1){
136
perror("sigaction");
137
return EXIT_FAILURE;
198
error(0, errno, "sigaction");
199
return EX_OSERR;
138
200
}
139
201
}
140
202
ret = sigaction(SIGHUP, NULL, &old_action);
141
203
if(ret == -1){
142
perror("sigaction");
143
return EXIT_FAILURE;
204
error(0, errno, "sigaction");
205
return EX_OSERR;
144
206
}
145
if (old_action.sa_handler != SIG_IGN){
207
if(old_action.sa_handler != SIG_IGN){
146
208
ret = sigaction(SIGHUP, &new_action, NULL);
147
209
if(ret == -1){
148
perror("sigaction");
149
return EXIT_FAILURE;
210
error(0, errno, "sigaction");
211
return EX_OSERR;
150
212
}
151
213
}
152
214
ret = sigaction(SIGTERM, NULL, &old_action);
153
215
if(ret == -1){
154
perror("sigaction");
155
return EXIT_FAILURE;
216
error(0, errno, "sigaction");
217
return EX_OSERR;
156
218
}
157
if (old_action.sa_handler != SIG_IGN){
219
if(old_action.sa_handler != SIG_IGN){
158
220
ret = sigaction(SIGTERM, &new_action, NULL);
159
221
if(ret == -1){
160
perror("sigaction");
161
return EXIT_FAILURE;
222
error(0, errno, "sigaction");
223
return EX_OSERR;
162
224
}
163
225
}
164
226
165
227
166
if (debug){
228
if(debug){
167
229
fprintf(stderr, "Removing echo flag from terminal attributes\n");
168
230
}
169
231
170
232
t_new = t_old;
171
t_new.c_lflag &= ~ECHO;
172
if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &t_new) != 0){
173
perror("tcsetattr-echo");
174
return EXIT_FAILURE;
233
t_new.c_lflag &= ~(tcflag_t)ECHO;
234
if(tcsetattr(STDIN_FILENO, TCSAFLUSH, &t_new) != 0){
235
int e = errno;
236
error(0, errno, "tcsetattr-echo");
237
switch(e){
238
case EBADF:
239
case ENOTTY:
240
return EX_UNAVAILABLE;
241
case EINVAL:
242
default:
243
return EX_OSERR;
244
}
175
245
}
176
177
if (debug){
246
247
if(debug){
178
248
fprintf(stderr, "Waiting for input from stdin \n");
179
249
}
180
250
while(true){
181
if (quit_now){
251
if(quit_now){
252
if(debug){
253
fprintf(stderr, "Interrupted by signal, exiting.\n");
254
}
182
255
status = EXIT_FAILURE;
183
256
break;
184
257
}
185
258
186
259
if(prefix){
187
fprintf(stderr, "%s Password: ", prefix);
188
} else {
189
fprintf(stderr, "Password: ");
190
}
191
ret = getline(&buffer, &n, stdin);
192
if (ret > 0){
193
fprintf(stdout, "%s", buffer);
260
fprintf(stderr, "%s ", prefix);
261
}
262
{
263
const char *cryptsource = getenv("CRYPTTAB_SOURCE");
264
const char *crypttarget = getenv("CRYPTTAB_NAME");
265
/* Before cryptsetup 1.1.0~rc2 */
266
if(cryptsource == NULL){
267
cryptsource = getenv("cryptsource");
268
}
269
if(crypttarget == NULL){
270
crypttarget = getenv("crypttarget");
271
}
272
const char *const prompt1 = "Unlocking the disk";
273
const char *const prompt2 = "Enter passphrase";
274
if(cryptsource == NULL){
275
if(crypttarget == NULL){
276
fprintf(stderr, "%s to unlock the disk: ", prompt2);
277
} else {
278
fprintf(stderr, "%s (%s)\n%s: ", prompt1, crypttarget,
279
prompt2);
280
}
281
} else {
282
if(crypttarget == NULL){
283
fprintf(stderr, "%s %s\n%s: ", prompt1, cryptsource,
284
prompt2);
285
} else {
286
fprintf(stderr, "%s %s (%s)\n%s: ", prompt1, cryptsource,
287
crypttarget, prompt2);
288
}
289
}
290
}
291
sret = getline(&buffer, &n, stdin);
292
if(sret > 0){
194
293
status = EXIT_SUCCESS;
294
/* Make n = data size instead of allocated buffer size */
295
n = (size_t)sret;
296
/* Strip final newline */
297
if(n > 0 and buffer[n-1] == '\n'){
298
buffer[n-1] = '\0'; /* not strictly necessary */
299
n--;
300
}
301
size_t written = 0;
302
while(written < n){
303
sret = write(STDOUT_FILENO, buffer + written, n - written);
304
if(sret < 0){
305
int e = errno;
306
error(0, errno, "write");
307
switch(e){
308
case EBADF:
309
case EFAULT:
310
case EINVAL:
311
case EFBIG:
312
case EIO:
313
case ENOSPC:
314
default:
315
status = EX_IOERR;
316
break;
317
case EINTR:
318
status = EXIT_FAILURE;
319
break;
320
}
321
break;
322
}
323
written += (size_t)sret;
324
}
325
sret = close(STDOUT_FILENO);
326
if(sret == -1){
327
int e = errno;
328
error(0, errno, "close");
329
switch(e){
330
case EBADF:
331
status = EX_OSFILE;
332
break;
333
case EIO:
334
default:
335
status = EX_IOERR;
336
break;
337
}
338
}
195
339
break;
196
340
}
197
if (ret < 0){
198
if (errno != EINTR and not feof(stdin)){
199
perror("getline");
200
status = EXIT_FAILURE;
341
if(sret < 0){
342
int e = errno;
343
if(errno != EINTR and not feof(stdin)){
344
error(0, errno, "getline");
345
switch(e){
346
case EBADF:
347
status = EX_UNAVAILABLE;
348
case EIO:
349
case EINVAL:
350
default:
351
status = EX_IOERR;
352
break;
353
}
201
354
break;
202
355
}
203
356
}
204
/* if(ret == 0), then the only sensible thing to do is to retry to
357
/* if(sret == 0), then the only sensible thing to do is to retry to
205
358
read from stdin */
206
359
fputc('\n', stderr);
360
if(debug and not quit_now){
361
/* If quit_now is nonzero, we were interrupted by a signal, and
362
will print that later, so no need to show this too. */
363
fprintf(stderr, "getline() returned 0, retrying.\n");
364
}
207
365
}
208
366
209
if (debug){
367
free(buffer);
368
369
if(debug){
210
370
fprintf(stderr, "Restoring terminal attributes\n");
211
371
}
212
if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &t_old) != 0){
213
perror("tcsetattr+echo");
214
}
215
216
if (debug){
217
fprintf(stderr, "%s is exiting\n", argv[0]);
372
if(tcsetattr(STDIN_FILENO, TCSAFLUSH, &t_old) != 0){
373
error(0, errno, "tcsetattr+echo");
374
}
375
376
if(quit_now){
377
sigemptyset(&old_action.sa_mask);
378
old_action.sa_handler = SIG_DFL;
379
ret = sigaction(signal_received, &old_action, NULL);
380
if(ret == -1){
381
error(0, errno, "sigaction");
382
}
383
raise(signal_received);
384
}
385
386
if(debug){
387
fprintf(stderr, "%s is exiting with status %d\n", argv[0],
388
status);
389
}
390
if(status == EXIT_SUCCESS or status == EX_OK){
391
fputc('\n', stderr);
218
392
}
219
393
220
394
return status;
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0