3
3
* Askpass-FIFO - Read a password from a FIFO and output it
5
* Copyright © 2008,2009 Teddy Hogeborn
6
* Copyright © 2008,2009 Björn Påhlsson
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* 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
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* <http://www.gnu.org/licenses/>.
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* along with Mandos. If not, see <http://www.gnu.org/licenses/>.
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* Contact the authors at <mandos@fukt.bsnet.se>.
23
* Contact the authors at <mandos@recompile.se>.
25
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
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#include <sys/types.h> /* ssize_t */
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#include <sys/stat.h> /* mkfifo(), S_IRUSR, S_IWUSR */
28
#include <iso646.h> /* and */
29
#include <errno.h> /* errno, EACCES, ENOTDIR, ELOOP,
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#define _GNU_SOURCE /* vasprintf(),
27
program_invocation_short_name */
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#include <sys/types.h> /* uid_t, gid_t, getuid(), getgid(),
30
#include <unistd.h> /* uid_t, gid_t, ssize_t, getuid(),
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getgid(), setgid(), setuid(),
32
read(), close(), write(),
34
#include <stdarg.h> /* va_list, va_start(), vfprintf() */
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#include <stdio.h> /* vasprintf(), fprintf(), stderr,
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#include <errno.h> /* program_invocation_short_name,
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errno, EACCES, ENOTDIR, ELOOP,
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39
ENAMETOOLONG, ENOSPC, EROFS,
31
40
ENOENT, EEXIST, EFAULT, EMFILE,
32
41
ENFILE, ENOMEM, EBADF, EINVAL, EIO,
43
#include <string.h> /* strerror() */
34
44
#include <error.h> /* error() */
35
#include <stdlib.h> /* EXIT_FAILURE, NULL, size_t, free(),
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realloc(), EXIT_SUCCESS */
45
#include <stdlib.h> /* free(), realloc(), EXIT_SUCCESS */
46
#include <sys/stat.h> /* mkfifo(), S_IRUSR, S_IWUSR */
47
#include <sysexits.h> /* EX_OSFILE, EX_OSERR,
48
EX_UNAVAILABLE, EX_IOERR */
37
49
#include <fcntl.h> /* open(), O_RDONLY */
38
#include <unistd.h> /* read(), close(), write(),
40
#include <sysexits.h> /* EX_OSERR, EX_OSFILE,
41
EX_UNAVAILABLE, EX_IOERR */
50
#include <stddef.h> /* NULL, size_t */
55
/* Function to use when printing errors */
56
__attribute__((format (gnu_printf, 3, 4)))
57
void error_plus(int status, int errnum, const char *formatstring,
63
va_start(ap, formatstring);
64
ret = vasprintf(&text, formatstring, ap);
66
fprintf(stderr, "Mandos plugin %s: ",
67
program_invocation_short_name);
68
vfprintf(stderr, formatstring, ap);
69
fprintf(stderr, ": ");
70
fprintf(stderr, "%s\n", strerror(errnum));
71
error(status, errno, "vasprintf while printing error");
73
__builtin_unreachable();
77
fprintf(stderr, "Mandos plugin ");
78
error(status, errnum, "%s", text);
80
__builtin_unreachable();
44
85
int main(__attribute__((unused))int argc,
45
86
__attribute__((unused))char **argv){
50
94
const char passfifo[] = "/lib/cryptsetup/passfifo";
51
95
ret = mkfifo(passfifo, S_IRUSR | S_IWUSR);
54
error(0, errno, "mkfifo");
102
error_plus(EX_OSFILE, errno, "mkfifo");
103
__builtin_unreachable();
60
104
case ENAMETOOLONG:
108
error_plus(EX_OSERR, errno, "mkfifo");
109
__builtin_unreachable();
66
return EX_UNAVAILABLE; /* no "/lib/cryptsetup"? */
111
/* no "/lib/cryptsetup"? */
112
error_plus(EX_UNAVAILABLE, errno, "mkfifo");
113
__builtin_unreachable();
68
115
break; /* not an error */
added
removed
plugins.d/askpass-fifo.c
