/mandos/release

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/release
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1
/*  -*- coding: utf-8 -*- */
2
/*
237.2.24 by Teddy Hogeborn
* plugins.d/askpass-fifo.c: Fix name in header.
3
 * Mandos-client - get and decrypt data from a Mandos server
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
4
 *
5
 * This program is partly derived from an example program for an Avahi
6
 * service browser, downloaded from
7
 * <http://avahi.org/browser/examples/core-browse-services.c>.  This
8
 * includes the following functions: "resolve_callback",
9
 * "browse_callback", and parts of "main".
10
 * 
28 by Teddy Hogeborn
* server.conf: New file.
11
 * Everything else is
237.7.355 by Teddy Hogeborn
Update copyright year.
12
 * Copyright © 2008-2016 Teddy Hogeborn
13
 * Copyright © 2008-2016 Björn Påhlsson
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
14
 * 
15
 * This program is free software: you can redistribute it and/or
16
 * modify it under the terms of the GNU General Public License as
17
 * published by the Free Software Foundation, either version 3 of the
18
 * License, or (at your option) any later version.
19
 * 
20
 * This program is distributed in the hope that it will be useful, but
21
 * WITHOUT ANY WARRANTY; without even the implied warranty of
22
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
23
 * General Public License for more details.
24
 * 
25
 * You should have received a copy of the GNU General Public License
26
 * along with this program.  If not, see
27
 * <http://www.gnu.org/licenses/>.
28
 * 
237.11.2 by Teddy Hogeborn
Change "fukt.bsnet.se" to "recompile.se" throughout.
29
 * Contact the authors at <mandos@recompile.se>.
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
30
 */
31
28 by Teddy Hogeborn
* server.conf: New file.
32
/* Needed by GPGME, specifically gpgme_data_seek() */
237.2.80 by Teddy Hogeborn
Use "getconf" to get correct LFS compile and link flags.
33
#ifndef _LARGEFILE_SOURCE
13 by Björn Påhlsson
Added following support:
34
#define _LARGEFILE_SOURCE
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
35
#endif	/* not _LARGEFILE_SOURCE */
237.2.80 by Teddy Hogeborn
Use "getconf" to get correct LFS compile and link flags.
36
#ifndef _FILE_OFFSET_BITS
13 by Björn Påhlsson
Added following support:
37
#define _FILE_OFFSET_BITS 64
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
38
#endif	/* not _FILE_OFFSET_BITS */
13 by Björn Påhlsson
Added following support:
39
76 by Teddy Hogeborn
* plugins.d/password-request.c (init_gnutls_global): Renamed
40
#define _GNU_SOURCE		/* TEMP_FAILURE_RETRY(), asprintf() */
24.1.10 by Björn Påhlsson
merge commit
41
76 by Teddy Hogeborn
* plugins.d/password-request.c (init_gnutls_global): Renamed
42
#include <stdio.h>		/* fprintf(), stderr, fwrite(),
237.7.242 by Teddy Hogeborn
Make mandos-client use unlinkat() instead of remove().
43
				   stdout, ferror() */
237.7.136 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Eliminate
44
#include <stdint.h> 		/* uint16_t, uint32_t, intptr_t */
24.1.26 by Björn Påhlsson
tally count of used symbols
45
#include <stddef.h>		/* NULL, size_t, ssize_t */
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
46
#include <stdlib.h> 		/* free(), EXIT_SUCCESS, srand(),
47
				   strtof(), abort() */
237.2.67 by Teddy Hogeborn
Four new interrelated features:
48
#include <stdbool.h>		/* bool, false, true */
237.7.321 by Teddy Hogeborn
mandos-client: Don't use memset().
49
#include <string.h>		/* strcmp(), strlen(), strerror(),
237.7.346 by Teddy Hogeborn
plugins.d/mandos-client.c (get_flags): Use strncpy(), not strcpy().
50
				   asprintf(), strncpy() */
237.2.67 by Teddy Hogeborn
Four new interrelated features:
51
#include <sys/ioctl.h>		/* ioctl */
24.1.26 by Björn Påhlsson
tally count of used symbols
52
#include <sys/types.h>		/* socket(), inet_pton(), sockaddr,
24.1.29 by Björn Påhlsson
Added more header file comments
53
				   sockaddr_in6, PF_INET6,
237.2.67 by Teddy Hogeborn
Four new interrelated features:
54
				   SOCK_STREAM, uid_t, gid_t, open(),
55
				   opendir(), DIR */
237.16.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Add error message.
56
#include <sys/stat.h>		/* open(), S_ISREG */
24.1.26 by Björn Påhlsson
tally count of used symbols
57
#include <sys/socket.h>		/* socket(), struct sockaddr_in6,
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
58
				   inet_pton(), connect(),
59
				   getnameinfo() */
237.7.361 by Teddy Hogeborn
Client: Remove new key directory introduced in GnuPG 2.1
60
#include <fcntl.h>		/* open(), unlinkat(), AT_REMOVEDIR */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
61
#include <dirent.h>		/* opendir(), struct dirent, readdir()
62
				 */
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
63
#include <inttypes.h>		/* PRIu16, PRIdMAX, intmax_t,
64
				   strtoimax() */
237.7.361 by Teddy Hogeborn
Client: Remove new key directory introduced in GnuPG 2.1
65
#include <errno.h>		/* perror(), errno, EINTR, EINVAL,
66
				   EAI_SYSTEM, ENETUNREACH,
67
				   EHOSTUNREACH, ECONNREFUSED, EPROTO,
68
				   EIO, ENOENT, ENXIO, ENOMEM, EISDIR,
69
				   ENOTEMPTY,
237.7.33 by Teddy Hogeborn
Merge from Björn.
70
				   program_invocation_short_name */
24.1.163 by Björn Påhlsson
mandos-client: Added never ending loop for --connect
71
#include <time.h>		/* nanosleep(), time(), sleep() */
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
72
#include <net/if.h>		/* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
24.1.26 by Björn Påhlsson
tally count of used symbols
73
				   SIOCSIFFLAGS, if_indextoname(),
74
				   if_nametoindex(), IF_NAMESIZE */
237.2.67 by Teddy Hogeborn
Four new interrelated features:
75
#include <netinet/in.h>		/* IN6_IS_ADDR_LINKLOCAL,
76
				   INET_ADDRSTRLEN, INET6_ADDRSTRLEN
77
				*/
24.1.29 by Björn Påhlsson
Added more header file comments
78
#include <unistd.h>		/* close(), SEEK_SET, off_t, write(),
237.2.128 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Bug fix: Check result of setgid().
79
				   getuid(), getgid(), seteuid(),
237.7.242 by Teddy Hogeborn
Make mandos-client use unlinkat() instead of remove().
80
				   setgid(), pause(), _exit(),
81
				   unlinkat() */
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
82
#include <arpa/inet.h>		/* inet_pton(), htons() */
237.2.67 by Teddy Hogeborn
Four new interrelated features:
83
#include <iso646.h>		/* not, or, and */
24.1.29 by Björn Påhlsson
Added more header file comments
84
#include <argp.h>		/* struct argp_option, error_t, struct
85
				   argp_state, struct argp,
86
				   argp_parse(), ARGP_KEY_ARG,
87
				   ARGP_KEY_END, ARGP_ERR_UNKNOWN */
237.2.70 by Teddy Hogeborn
Merge from Björn:
88
#include <signal.h>		/* sigemptyset(), sigaddset(),
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
89
				   sigaction(), SIGTERM, sig_atomic_t,
90
				   raise() */
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
91
#include <sysexits.h>		/* EX_OSERR, EX_USAGE, EX_UNAVAILABLE,
92
				   EX_NOHOST, EX_IOERR, EX_PROTOCOL */
237.16.3 by teddy at bsnet
* plugins.d/mandos-client.c: Prefix all printouts with "Mandos plugin
93
#include <sys/wait.h>		/* waitpid(), WIFEXITED(),
94
				   WEXITSTATUS(), WTERMSIG() */
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
95
#include <grp.h>		/* setgroups() */
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
96
#include <argz.h>		/* argz_add_sep(), argz_next(),
97
				   argz_delete(), argz_append(),
98
				   argz_stringify(), argz_add(),
99
				   argz_count() */
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
100
#include <netdb.h>		/* getnameinfo(), NI_NUMERICHOST,
101
				   EAI_SYSTEM, gai_strerror() */
237.2.70 by Teddy Hogeborn
Merge from Björn:
102
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
103
#ifdef __linux__
24.1.124 by Björn Påhlsson
Added lower kernel loglevel to reduce clutter on system console.
104
#include <sys/klog.h> 		/* klogctl() */
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
105
#endif	/* __linux__ */
24.1.26 by Björn Påhlsson
tally count of used symbols
106
107
/* Avahi */
24.1.29 by Björn Påhlsson
Added more header file comments
108
/* All Avahi types, constants and functions
109
 Avahi*, avahi_*,
110
 AVAHI_* */
111
#include <avahi-core/core.h>
24.1.26 by Björn Påhlsson
tally count of used symbols
112
#include <avahi-core/lookup.h>
24.1.29 by Björn Påhlsson
Added more header file comments
113
#include <avahi-core/log.h>
24.1.26 by Björn Påhlsson
tally count of used symbols
114
#include <avahi-common/simple-watch.h>
115
#include <avahi-common/malloc.h>
116
#include <avahi-common/error.h>
117
118
/* GnuTLS */
76 by Teddy Hogeborn
* plugins.d/password-request.c (init_gnutls_global): Renamed
119
#include <gnutls/gnutls.h>	/* All GnuTLS types, constants and
120
				   functions:
24.1.29 by Björn Påhlsson
Added more header file comments
121
				   gnutls_*
24.1.26 by Björn Påhlsson
tally count of used symbols
122
				   init_gnutls_session(),
24.1.29 by Björn Påhlsson
Added more header file comments
123
				   GNUTLS_* */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
124
#include <gnutls/openpgp.h>
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
125
			 /* gnutls_certificate_set_openpgp_key_file(),
126
			    GNUTLS_OPENPGP_FMT_BASE64 */
24.1.26 by Björn Påhlsson
tally count of used symbols
127
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
128
/* GPGME */
76 by Teddy Hogeborn
* plugins.d/password-request.c (init_gnutls_global): Renamed
129
#include <gpgme.h> 		/* All GPGME types, constants and
130
				   functions:
24.1.29 by Björn Påhlsson
Added more header file comments
131
				   gpgme_*
24.1.26 by Björn Påhlsson
tally count of used symbols
132
				   GPGME_PROTOCOL_OpenPGP,
24.1.29 by Björn Påhlsson
Added more header file comments
133
				   GPG_ERR_NO_* */
13 by Björn Påhlsson
Added following support:
134
135
#define BUFFER_SIZE 256
37 by Teddy Hogeborn
Non-tested commit for merge purposes.
136
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
137
#define PATHDIR "/conf/conf.d/mandos"
138
#define SECKEY "seckey.txt"
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
139
#define PUBKEY "pubkey.txt"
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
140
#define HOOKDIR "/lib/mandos/network-hooks.d"
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
141
15.1.2 by Björn Påhlsson
Added debug options from passprompt as --debug and --debug=passprompt
142
bool debug = false;
43 by Teddy Hogeborn
* plugins.d/mandosclient.c: Cosmetic changes.
143
static const char mandos_protocol_version[] = "1";
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
144
const char *argp_program_version = "mandos-client " VERSION;
145
const char *argp_program_bug_address = "<mandos@recompile.se>";
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
146
static const char sys_class_net[] = "/sys/class/net";
147
char *connect_to = NULL;
237.16.4 by teddy at bsnet
* plugins.d/mandos-client.c (runnable_hook): Bug fix: stat using the
148
const char *hookdir = HOOKDIR;
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
149
int hookdir_fd = -1;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
150
uid_t uid = 65534;
151
gid_t gid = 65534;
24.1.10 by Björn Påhlsson
merge commit
152
237.7.33 by Teddy Hogeborn
Merge from Björn.
153
/* Doubly linked list that need to be circularly linked when used */
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
154
typedef struct server{
155
  const char *ip;
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
156
  in_port_t port;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
157
  AvahiIfIndex if_index;
158
  int af;
159
  struct timespec last_seen;
160
  struct server *next;
161
  struct server *prev;
162
} server;
163
42 by Teddy Hogeborn
* plugins.d/mandosclient.c (start_mandos_communication): Change "to"
164
/* Used for passing in values through the Avahi callback functions */
13 by Björn Påhlsson
Added following support:
165
typedef struct {
24.1.9 by Björn Påhlsson
not working midwork...
166
  AvahiServer *server;
13 by Björn Påhlsson
Added following support:
167
  gnutls_certificate_credentials_t cred;
24.1.9 by Björn Påhlsson
not working midwork...
168
  unsigned int dh_bits;
24.1.13 by Björn Påhlsson
mandosclient
169
  gnutls_dh_params_t dh_params;
24.1.9 by Björn Påhlsson
not working midwork...
170
  const char *priority;
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
171
  gpgme_ctx_t ctx;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
172
  server *current_server;
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
173
  char *interfaces;
174
  size_t interfaces_size;
24.1.9 by Björn Påhlsson
not working midwork...
175
} mandos_context;
13 by Björn Påhlsson
Added following support:
176
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
177
/* global so signal handler can reach it*/
178
AvahiSimplePoll *simple_poll;
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
179
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
180
sig_atomic_t quit_now = 0;
181
int signal_received = 0;
182
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
183
/* Function to use when printing errors */
184
void perror_plus(const char *print_text){
237.7.82 by teddy at bsnet
* plugin-runner.c (add_to_char_array): Added "nonnull" attribute.
185
  int e = errno;
237.7.33 by Teddy Hogeborn
Merge from Björn.
186
  fprintf(stderr, "Mandos plugin %s: ",
187
	  program_invocation_short_name);
237.7.82 by teddy at bsnet
* plugin-runner.c (add_to_char_array): Added "nonnull" attribute.
188
  errno = e;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
189
  perror(print_text);
190
}
191
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
192
__attribute__((format (gnu_printf, 2, 3), nonnull))
237.15.4 by Björn Påhlsson
New convinence error printer: fprintf_plus
193
int fprintf_plus(FILE *stream, const char *format, ...){
194
  va_list ap;
195
  va_start (ap, format);
196
  
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
197
  TEMP_FAILURE_RETRY(fprintf(stream, "Mandos plugin %s: ",
198
			     program_invocation_short_name));
237.7.170 by Teddy Hogeborn
* debian/control (Build-Depends): Depend on debhelper 8.9.7 for using
199
  return (int)TEMP_FAILURE_RETRY(vfprintf(stream, format, ap));
237.15.4 by Björn Påhlsson
New convinence error printer: fprintf_plus
200
}
201
43 by Teddy Hogeborn
* plugins.d/mandosclient.c: Cosmetic changes.
202
/*
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
203
 * Make additional room in "buffer" for at least BUFFER_SIZE more
204
 * bytes. "buffer_capacity" is how much is currently allocated,
205
 * "buffer_length" is how much is already used.
43 by Teddy Hogeborn
* plugins.d/mandosclient.c: Cosmetic changes.
206
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
207
__attribute__((nonnull, warn_unused_result))
24.1.132 by Björn Påhlsson
Fixed a bug in fallback handling
208
size_t incbuffer(char **buffer, size_t buffer_length,
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
209
		 size_t buffer_capacity){
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
210
  if(buffer_length + BUFFER_SIZE > buffer_capacity){
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
211
    char *new_buf = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
212
    if(new_buf == NULL){
213
      int old_errno = errno;
214
      free(*buffer);
215
      errno = old_errno;
216
      *buffer = NULL;
24.1.10 by Björn Påhlsson
merge commit
217
      return 0;
218
    }
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
219
    *buffer = new_buf;
24.1.10 by Björn Påhlsson
merge commit
220
    buffer_capacity += BUFFER_SIZE;
221
  }
222
  return buffer_capacity;
223
}
224
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
225
/* Add server to set of servers to retry periodically */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
226
__attribute__((nonnull, warn_unused_result))
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
227
bool add_server(const char *ip, in_port_t port, AvahiIfIndex if_index,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
228
		int af, server **current_server){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
229
  int ret;
230
  server *new_server = malloc(sizeof(server));
231
  if(new_server == NULL){
232
    perror_plus("malloc");
237.11.27 by teddy at bsnet
* plugins.d/mandos-client.c (add_server): Return bool; all callers
233
    return false;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
234
  }
235
  *new_server = (server){ .ip = strdup(ip),
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
236
			  .port = port,
237
			  .if_index = if_index,
238
			  .af = af };
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
239
  if(new_server->ip == NULL){
240
    perror_plus("strdup");
237.7.258 by Teddy Hogeborn
mandos-client: Fix minor memory leak on memory full or clock failure.
241
    free(new_server);
237.11.27 by teddy at bsnet
* plugins.d/mandos-client.c (add_server): Return bool; all callers
242
    return false;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
243
  }
237.7.216 by Teddy Hogeborn
Do not add a new server to server list if clock_gettime() fails
244
  ret = clock_gettime(CLOCK_MONOTONIC, &(new_server->last_seen));
245
  if(ret == -1){
246
    perror_plus("clock_gettime");
237.7.262 by Teddy Hogeborn
mandos-client: Fix mem free bug.
247
#ifdef __GNUC__
248
#pragma GCC diagnostic push
249
#pragma GCC diagnostic ignored "-Wcast-qual"
250
#endif
251
    free((char *)(new_server->ip));
252
#ifdef __GNUC__
253
#pragma GCC diagnostic pop
254
#endif
237.7.258 by Teddy Hogeborn
mandos-client: Fix minor memory leak on memory full or clock failure.
255
    free(new_server);
237.7.216 by Teddy Hogeborn
Do not add a new server to server list if clock_gettime() fails
256
    return false;
257
  }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
258
  /* Special case of first server */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
259
  if(*current_server == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
260
    new_server->next = new_server;
261
    new_server->prev = new_server;
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
262
    *current_server = new_server;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
263
  } else {
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
264
    /* Place the new server last in the list */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
265
    new_server->next = *current_server;
266
    new_server->prev = (*current_server)->prev;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
267
    new_server->prev->next = new_server;
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
268
    (*current_server)->prev = new_server;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
269
  }
237.11.27 by teddy at bsnet
* plugins.d/mandos-client.c (add_server): Return bool; all callers
270
  return true;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
271
}
272
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
273
/* 
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
274
 * Initialize GPGME.
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
275
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
276
__attribute__((nonnull, warn_unused_result))
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
277
static bool init_gpgme(const char * const seckey,
278
		       const char * const pubkey,
279
		       const char * const tempdir,
280
		       mandos_context *mc){
13 by Björn Påhlsson
Added following support:
281
  gpgme_error_t rc;
282
  gpgme_engine_info_t engine_info;
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
283
  
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
284
  /*
237.2.51 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Use separate bool variable instead
285
   * Helper function to insert pub and seckey to the engine keyring.
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
286
   */
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
287
  bool import_key(const char * const filename){
237.2.124 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gpgme): Move variable "ret" into the
288
    int ret;
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
289
    int fd;
290
    gpgme_data_t pgp_data;
291
    
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
292
    fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
293
    if(fd == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
294
      perror_plus("open");
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
295
      return false;
296
    }
297
    
298
    rc = gpgme_data_new_from_fd(&pgp_data, fd);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
299
    if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
300
      fprintf_plus(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
301
		   gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
302
      return false;
303
    }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
304
    
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
305
    rc = gpgme_op_import(mc->ctx, pgp_data);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
306
    if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
307
      fprintf_plus(stderr, "bad gpgme_op_import: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
308
		   gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
309
      return false;
310
    }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
311
    
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
312
    ret = close(fd);
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
313
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
314
      perror_plus("close");
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
315
    }
316
    gpgme_data_release(pgp_data);
317
    return true;
318
  }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
319
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
320
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
321
    fprintf_plus(stderr, "Initializing GPGME\n");
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
322
  }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
323
  
13 by Björn Påhlsson
Added following support:
324
  /* Init GPGME */
325
  gpgme_check_version(NULL);
24.1.4 by Björn Påhlsson
Added optional parameters certdir, certkey and certfile that can be iven at start in the command line.
326
  rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
327
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
328
    fprintf_plus(stderr, "bad gpgme_engine_check_version: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
329
		 gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
330
    return false;
24.1.4 by Björn Påhlsson
Added optional parameters certdir, certkey and certfile that can be iven at start in the command line.
331
  }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
332
  
237.7.40 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not even try to work around
333
  /* Set GPGME home directory for the OpenPGP engine only */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
334
  rc = gpgme_get_engine_info(&engine_info);
335
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
336
    fprintf_plus(stderr, "bad gpgme_get_engine_info: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
337
		 gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
338
    return false;
13 by Björn Påhlsson
Added following support:
339
  }
340
  while(engine_info != NULL){
341
    if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
342
      gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
343
			    engine_info->file_name, tempdir);
13 by Björn Påhlsson
Added following support:
344
      break;
345
    }
346
    engine_info = engine_info->next;
347
  }
348
  if(engine_info == NULL){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
349
    fprintf_plus(stderr, "Could not set GPGME home dir to %s\n",
350
		 tempdir);
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
351
    return false;
352
  }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
353
  
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
354
  /* Create new GPGME "context" */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
355
  rc = gpgme_new(&(mc->ctx));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
356
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
357
    fprintf_plus(stderr, "Mandos plugin mandos-client: "
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
358
		 "bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
359
		 gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
360
    return false;
361
  }
362
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
363
  if(not import_key(pubkey) or not import_key(seckey)){
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
364
    return false;
365
  }
366
  
237.2.118 by Teddy Hogeborn
* mandos: White-space fixes only.
367
  return true;
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
368
}
369
370
/* 
371
 * Decrypt OpenPGP data.
372
 * Returns -1 on error
373
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
374
__attribute__((nonnull, warn_unused_result))
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
375
static ssize_t pgp_packet_decrypt(const char *cryptotext,
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
376
				  size_t crypto_size,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
377
				  char **plaintext,
378
				  mandos_context *mc){
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
379
  gpgme_data_t dh_crypto, dh_plain;
380
  gpgme_error_t rc;
381
  ssize_t ret;
382
  size_t plaintext_capacity = 0;
383
  ssize_t plaintext_length = 0;
384
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
385
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
386
    fprintf_plus(stderr, "Trying to decrypt OpenPGP data\n");
13 by Björn Påhlsson
Added following support:
387
  }
388
  
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
389
  /* Create new GPGME data buffer from memory cryptotext */
390
  rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
391
			       0);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
392
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
393
    fprintf_plus(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
394
		 gpgme_strsource(rc), gpgme_strerror(rc));
13 by Björn Påhlsson
Added following support:
395
    return -1;
396
  }
397
  
398
  /* Create new empty GPGME data buffer for the plaintext */
399
  rc = gpgme_data_new(&dh_plain);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
400
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
401
    fprintf_plus(stderr, "Mandos plugin mandos-client: "
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
402
		 "bad gpgme_data_new: %s: %s\n",
403
		 gpgme_strsource(rc), gpgme_strerror(rc));
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
404
    gpgme_data_release(dh_crypto);
13 by Björn Påhlsson
Added following support:
405
    return -1;
406
  }
407
  
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
408
  /* Decrypt data from the cryptotext data buffer to the plaintext
409
     data buffer */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
410
  rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
411
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
412
    fprintf_plus(stderr, "bad gpgme_op_decrypt: %s: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
413
		 gpgme_strsource(rc), gpgme_strerror(rc));
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
414
    plaintext_length = -1;
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
415
    if(debug){
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
416
      gpgme_decrypt_result_t result;
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
417
      result = gpgme_op_decrypt_result(mc->ctx);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
418
      if(result == NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
419
	fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
420
      } else {
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
421
	fprintf_plus(stderr, "Unsupported algorithm: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
422
		     result->unsupported_algorithm);
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
423
	fprintf_plus(stderr, "Wrong key usage: %u\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
424
		     result->wrong_key_usage);
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
425
	if(result->file_name != NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
426
	  fprintf_plus(stderr, "File name: %s\n", result->file_name);
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
427
	}
428
	gpgme_recipient_t recipient;
429
	recipient = result->recipients;
237.2.112 by Teddy Hogeborn
* plugins.d/mandos-client.c (pgp_packet_decrypt): Remove redundant
430
	while(recipient != NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
431
	  fprintf_plus(stderr, "Public key algorithm: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
432
		       gpgme_pubkey_algo_name
433
		       (recipient->pubkey_algo));
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
434
	  fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);
435
	  fprintf_plus(stderr, "Secret key available: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
436
		       recipient->status == GPG_ERR_NO_SECKEY
437
		       ? "No" : "Yes");
237.2.112 by Teddy Hogeborn
* plugins.d/mandos-client.c (pgp_packet_decrypt): Remove redundant
438
	  recipient = recipient->next;
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
439
	}
440
      }
441
    }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
442
    goto decrypt_end;
13 by Björn Påhlsson
Added following support:
443
  }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
444
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
445
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
446
    fprintf_plus(stderr, "Decryption of OpenPGP data succeeded\n");
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
447
  }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
448
  
13 by Björn Påhlsson
Added following support:
449
  /* Seek back to the beginning of the GPGME plaintext data buffer */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
450
  if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
451
    perror_plus("gpgme_data_seek");
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
452
    plaintext_length = -1;
453
    goto decrypt_end;
24.1.5 by Björn Påhlsson
plugbasedclient:
454
  }
455
  
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
456
  *plaintext = NULL;
13 by Björn Påhlsson
Added following support:
457
  while(true){
24.1.132 by Björn Påhlsson
Fixed a bug in fallback handling
458
    plaintext_capacity = incbuffer(plaintext,
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
459
				   (size_t)plaintext_length,
460
				   plaintext_capacity);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
461
    if(plaintext_capacity == 0){
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
462
      perror_plus("incbuffer");
463
      plaintext_length = -1;
464
      goto decrypt_end;
13 by Björn Påhlsson
Added following support:
465
    }
466
    
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
467
    ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
468
			  BUFFER_SIZE);
13 by Björn Påhlsson
Added following support:
469
    /* Print the data, if any */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
470
    if(ret == 0){
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
471
      /* EOF */
13 by Björn Påhlsson
Added following support:
472
      break;
473
    }
474
    if(ret < 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
475
      perror_plus("gpgme_data_read");
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
476
      plaintext_length = -1;
477
      goto decrypt_end;
13 by Björn Påhlsson
Added following support:
478
    }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
479
    plaintext_length += ret;
13 by Björn Påhlsson
Added following support:
480
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
481
  
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
482
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
483
    fprintf_plus(stderr, "Decrypted password is: ");
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
484
    for(ssize_t i = 0; i < plaintext_length; i++){
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
485
      fprintf(stderr, "%02hhX ", (*plaintext)[i]);
486
    }
487
    fprintf(stderr, "\n");
488
  }
489
  
490
 decrypt_end:
491
  
492
  /* Delete the GPGME cryptotext data buffer */
493
  gpgme_data_release(dh_crypto);
15.1.3 by Björn Påhlsson
Added getopt_long support for mandosclient and passprompt
494
  
495
  /* Delete the GPGME plaintext data buffer */
13 by Björn Påhlsson
Added following support:
496
  gpgme_data_release(dh_plain);
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
497
  return plaintext_length;
13 by Björn Påhlsson
Added following support:
498
}
499
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
500
__attribute__((warn_unused_result, const))
501
static const char *safe_string(const char *str){
502
  if(str == NULL)
503
    return "(unknown)";
504
  return str;
505
}
506
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
507
__attribute__((warn_unused_result))
508
static const char *safer_gnutls_strerror(int value){
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
509
  const char *ret = gnutls_strerror(value);
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
510
  return safe_string(ret);
13 by Björn Påhlsson
Added following support:
511
}
512
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
513
/* GnuTLS log function callback */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
514
__attribute__((nonnull))
36 by Teddy Hogeborn
* TODO: Converted to org-mode style
515
static void debuggnutls(__attribute__((unused)) int level,
516
			const char* string){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
517
  fprintf_plus(stderr, "GnuTLS: %s", string);
13 by Björn Påhlsson
Added following support:
518
}
519
237.7.359 by Teddy Hogeborn
Client: Remove an incorrect "nonnull" attribute
520
__attribute__((nonnull(1, 2, 4), warn_unused_result))
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
521
static int init_gnutls_global(const char *pubkeyfilename,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
522
			      const char *seckeyfilename,
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
523
			      const char *dhparamsfilename,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
524
			      mandos_context *mc){
13 by Björn Påhlsson
Added following support:
525
  int ret;
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
526
  unsigned int uret;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
527
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
528
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
529
    fprintf_plus(stderr, "Initializing GnuTLS\n");
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
530
  }
24.1.29 by Björn Påhlsson
Added more header file comments
531
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
532
  if(debug){
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
533
    /* "Use a log level over 10 to enable all debugging options."
534
     * - GnuTLS manual
535
     */
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
536
    gnutls_global_set_log_level(11);
537
    gnutls_global_set_log_function(debuggnutls);
538
  }
539
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
540
  /* OpenPGP credentials */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
541
  ret = gnutls_certificate_allocate_credentials(&mc->cred);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
542
  if(ret != GNUTLS_E_SUCCESS){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
543
    fprintf_plus(stderr, "GnuTLS memory error: %s\n",
544
		 safer_gnutls_strerror(ret));
13 by Björn Påhlsson
Added following support:
545
    return -1;
546
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
547
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
548
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
549
    fprintf_plus(stderr, "Attempting to use OpenPGP public key %s and"
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
550
		 " secret key %s as GnuTLS credentials\n",
551
		 pubkeyfilename,
552
		 seckeyfilename);
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
553
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
554
  
13 by Björn Påhlsson
Added following support:
555
  ret = gnutls_certificate_set_openpgp_key_file
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
556
    (mc->cred, pubkeyfilename, seckeyfilename,
76 by Teddy Hogeborn
* plugins.d/password-request.c (init_gnutls_global): Renamed
557
     GNUTLS_OPENPGP_FMT_BASE64);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
558
  if(ret != GNUTLS_E_SUCCESS){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
559
    fprintf_plus(stderr,
560
		 "Error[%d] while reading the OpenPGP key pair ('%s',"
561
		 " '%s')\n", ret, pubkeyfilename, seckeyfilename);
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
562
    fprintf_plus(stderr, "The GnuTLS error is: %s\n",
563
		 safer_gnutls_strerror(ret));
24.1.20 by Björn Påhlsson
mandosclient
564
    goto globalfail;
13 by Björn Påhlsson
Added following support:
565
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
566
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
567
  /* GnuTLS server initialization */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
568
  ret = gnutls_dh_params_init(&mc->dh_params);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
569
  if(ret != GNUTLS_E_SUCCESS){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
570
    fprintf_plus(stderr, "Error in GnuTLS DH parameter"
571
		 " initialization: %s\n",
572
		 safer_gnutls_strerror(ret));
24.1.20 by Björn Påhlsson
mandosclient
573
    goto globalfail;
13 by Björn Påhlsson
Added following support:
574
  }
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
575
  /* If a Diffie-Hellman parameters file was given, try to use it */
576
  if(dhparamsfilename != NULL){
577
    gnutls_datum_t params = { .data = NULL, .size = 0 };
578
    do {
579
      int dhpfile = open(dhparamsfilename, O_RDONLY);
580
      if(dhpfile == -1){
581
	perror_plus("open");
582
	dhparamsfilename = NULL;
583
	break;
584
      }
585
      size_t params_capacity = 0;
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
586
      while(true){
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
587
	params_capacity = incbuffer((char **)&params.data,
588
				    (size_t)params.size,
589
				    (size_t)params_capacity);
590
	if(params_capacity == 0){
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
591
	  perror_plus("incbuffer");
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
592
	  free(params.data);
593
	  params.data = NULL;
594
	  dhparamsfilename = NULL;
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
595
	  break;
596
	}
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
597
	ssize_t bytes_read = read(dhpfile,
598
				  params.data + params.size,
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
599
				  BUFFER_SIZE);
600
	/* EOF */
601
	if(bytes_read == 0){
602
	  break;
603
	}
604
	/* check bytes_read for failure */
605
	if(bytes_read < 0){
606
	  perror_plus("read");
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
607
	  free(params.data);
608
	  params.data = NULL;
609
	  dhparamsfilename = NULL;
610
	  break;
611
	}
612
	params.size += (unsigned int)bytes_read;
613
      }
614
      if(params.data == NULL){
615
	dhparamsfilename = NULL;
616
      }
617
      if(dhparamsfilename == NULL){
618
	break;
619
      }
620
      ret = gnutls_dh_params_import_pkcs3(mc->dh_params, &params,
621
					  GNUTLS_X509_FMT_PEM);
622
      if(ret != GNUTLS_E_SUCCESS){
623
	fprintf_plus(stderr, "Failed to parse DH parameters in file"
624
		     " \"%s\": %s\n", dhparamsfilename,
625
		     safer_gnutls_strerror(ret));
626
	dhparamsfilename = NULL;
627
      }
628
    } while(false);
629
  }
630
  if(dhparamsfilename == NULL){
631
    if(mc->dh_bits == 0){
632
      /* Find out the optimal number of DH bits */
633
      /* Try to read the private key file */
634
      gnutls_datum_t buffer = { .data = NULL, .size = 0 };
635
      do {
636
	int secfile = open(seckeyfilename, O_RDONLY);
637
	if(secfile == -1){
638
	  perror_plus("open");
639
	  break;
640
	}
641
	size_t buffer_capacity = 0;
642
	while(true){
643
	  buffer_capacity = incbuffer((char **)&buffer.data,
644
				      (size_t)buffer.size,
645
				      (size_t)buffer_capacity);
646
	  if(buffer_capacity == 0){
647
	    perror_plus("incbuffer");
648
	    free(buffer.data);
649
	    buffer.data = NULL;
650
	    break;
651
	  }
652
	  ssize_t bytes_read = read(secfile,
653
				    buffer.data + buffer.size,
654
				    BUFFER_SIZE);
655
	  /* EOF */
656
	  if(bytes_read == 0){
657
	    break;
658
	  }
659
	  /* check bytes_read for failure */
660
	  if(bytes_read < 0){
661
	    perror_plus("read");
662
	    free(buffer.data);
663
	    buffer.data = NULL;
664
	    break;
665
	  }
666
	  buffer.size += (unsigned int)bytes_read;
667
	}
668
	close(secfile);
669
      } while(false);
670
      /* If successful, use buffer to parse private key */
671
      gnutls_sec_param_t sec_param = GNUTLS_SEC_PARAM_ULTRA;
672
      if(buffer.data != NULL){
673
	{
674
	  gnutls_openpgp_privkey_t privkey = NULL;
675
	  ret = gnutls_openpgp_privkey_init(&privkey);
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
676
	  if(ret != GNUTLS_E_SUCCESS){
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
677
	    fprintf_plus(stderr, "Error initializing OpenPGP key"
678
			 " structure: %s",
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
679
			 safer_gnutls_strerror(ret));
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
680
	    free(buffer.data);
681
	    buffer.data = NULL;
682
	  } else {
683
	    ret = gnutls_openpgp_privkey_import
684
	      (privkey, &buffer, GNUTLS_OPENPGP_FMT_BASE64, "", 0);
685
	    if(ret != GNUTLS_E_SUCCESS){
686
	      fprintf_plus(stderr, "Error importing OpenPGP key : %s",
687
			   safer_gnutls_strerror(ret));
688
	      privkey = NULL;
689
	    }
690
	    free(buffer.data);
691
	    buffer.data = NULL;
692
	    if(privkey != NULL){
693
	      /* Use private key to suggest an appropriate
694
		 sec_param */
695
	      sec_param = gnutls_openpgp_privkey_sec_param(privkey);
696
	      gnutls_openpgp_privkey_deinit(privkey);
697
	      if(debug){
698
		fprintf_plus(stderr, "This OpenPGP key implies using"
699
			     " a GnuTLS security parameter \"%s\".\n",
700
			     safe_string(gnutls_sec_param_get_name
701
					 (sec_param)));
702
	      }
703
	    }
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
704
	  }
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
705
	}
706
	if(sec_param == GNUTLS_SEC_PARAM_UNKNOWN){
707
	  /* Err on the side of caution */
708
	  sec_param = GNUTLS_SEC_PARAM_ULTRA;
709
	  if(debug){
710
	    fprintf_plus(stderr, "Falling back to security parameter"
711
			 " \"%s\"\n",
712
			 safe_string(gnutls_sec_param_get_name
713
				     (sec_param)));
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
714
	  }
715
	}
716
      }
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
717
      uret = gnutls_sec_param_to_pk_bits(GNUTLS_PK_DH, sec_param);
718
      if(uret != 0){
719
	mc->dh_bits = uret;
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
720
	if(debug){
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
721
	  fprintf_plus(stderr, "A \"%s\" GnuTLS security parameter"
722
		       " implies %u DH bits; using that.\n",
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
723
		       safe_string(gnutls_sec_param_get_name
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
724
				   (sec_param)),
725
		       mc->dh_bits);
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
726
	}
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
727
      } else {
728
	fprintf_plus(stderr, "Failed to get implied number of DH"
729
		     " bits for security parameter \"%s\"): %s\n",
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
730
		     safe_string(gnutls_sec_param_get_name
731
				 (sec_param)),
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
732
		     safer_gnutls_strerror(ret));
733
	goto globalfail;
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
734
      }
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
735
    } else if(debug){
736
      fprintf_plus(stderr, "DH bits explicitly set to %u\n",
737
		   mc->dh_bits);
738
    }
739
    ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
740
    if(ret != GNUTLS_E_SUCCESS){
741
      fprintf_plus(stderr, "Error in GnuTLS prime generation (%u"
742
		   " bits): %s\n", mc->dh_bits,
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
743
		   safer_gnutls_strerror(ret));
744
      goto globalfail;
745
    }
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
746
  }
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
747
  gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
748
  
24.1.13 by Björn Påhlsson
mandosclient
749
  return 0;
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
750
  
24.1.20 by Björn Påhlsson
mandosclient
751
 globalfail:
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
752
  
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
753
  gnutls_certificate_free_credentials(mc->cred);
754
  gnutls_dh_params_deinit(mc->dh_params);
24.1.20 by Björn Påhlsson
mandosclient
755
  return -1;
24.1.13 by Björn Påhlsson
mandosclient
756
}
757
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
758
__attribute__((nonnull, warn_unused_result))
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
759
static int init_gnutls_session(gnutls_session_t *session,
760
			       mandos_context *mc){
24.1.13 by Björn Påhlsson
mandosclient
761
  int ret;
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
762
  /* GnuTLS session creation */
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
763
  do {
764
    ret = gnutls_init(session, GNUTLS_SERVER);
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
765
    if(quit_now){
766
      return -1;
767
    }
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
768
  } while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
769
  if(ret != GNUTLS_E_SUCCESS){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
770
    fprintf_plus(stderr,
771
		 "Error in GnuTLS session initialization: %s\n",
772
		 safer_gnutls_strerror(ret));
13 by Björn Påhlsson
Added following support:
773
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
774
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
775
  {
776
    const char *err;
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
777
    do {
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
778
      ret = gnutls_priority_set_direct(*session, mc->priority, &err);
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
779
      if(quit_now){
780
	gnutls_deinit(*session);
781
	return -1;
782
      }
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
783
    } while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
784
    if(ret != GNUTLS_E_SUCCESS){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
785
      fprintf_plus(stderr, "Syntax error at: %s\n", err);
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
786
      fprintf_plus(stderr, "GnuTLS error: %s\n",
787
		   safer_gnutls_strerror(ret));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
788
      gnutls_deinit(*session);
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
789
      return -1;
790
    }
13 by Björn Påhlsson
Added following support:
791
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
792
  
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
793
  do {
794
    ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
795
				 mc->cred);
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
796
    if(quit_now){
797
      gnutls_deinit(*session);
798
      return -1;
799
    }
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
800
  } while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
801
  if(ret != GNUTLS_E_SUCCESS){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
802
    fprintf_plus(stderr, "Error setting GnuTLS credentials: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
803
		 safer_gnutls_strerror(ret));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
804
    gnutls_deinit(*session);
13 by Björn Påhlsson
Added following support:
805
    return -1;
806
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
807
  
13 by Björn Påhlsson
Added following support:
808
  /* ignore client certificate if any. */
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
809
  gnutls_certificate_server_set_request(*session, GNUTLS_CERT_IGNORE);
13 by Björn Påhlsson
Added following support:
810
  
811
  return 0;
812
}
813
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
814
/* Avahi log function callback */
36 by Teddy Hogeborn
* TODO: Converted to org-mode style
815
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
816
		      __attribute__((unused)) const char *txt){}
13 by Björn Påhlsson
Added following support:
817
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
818
/* Set effective uid to 0, return errno */
819
__attribute__((warn_unused_result))
820
error_t raise_privileges(void){
821
  error_t old_errno = errno;
822
  error_t ret_errno = 0;
823
  if(seteuid(0) == -1){
824
    ret_errno = errno;
825
  }
826
  errno = old_errno;
827
  return ret_errno;
828
}
829
830
/* Set effective and real user ID to 0.  Return errno. */
831
__attribute__((warn_unused_result))
832
error_t raise_privileges_permanently(void){
833
  error_t old_errno = errno;
834
  error_t ret_errno = raise_privileges();
835
  if(ret_errno != 0){
836
    errno = old_errno;
837
    return ret_errno;
838
  }
839
  if(setuid(0) == -1){
840
    ret_errno = errno;
841
  }
842
  errno = old_errno;
843
  return ret_errno;
844
}
845
846
/* Set effective user ID to unprivileged saved user ID */
847
__attribute__((warn_unused_result))
848
error_t lower_privileges(void){
849
  error_t old_errno = errno;
850
  error_t ret_errno = 0;
851
  if(seteuid(uid) == -1){
852
    ret_errno = errno;
853
  }
854
  errno = old_errno;
855
  return ret_errno;
856
}
857
858
/* Lower privileges permanently */
859
__attribute__((warn_unused_result))
860
error_t lower_privileges_permanently(void){
861
  error_t old_errno = errno;
862
  error_t ret_errno = 0;
863
  if(setuid(uid) == -1){
864
    ret_errno = errno;
865
  }
866
  errno = old_errno;
867
  return ret_errno;
868
}
869
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
870
/* Helper function to add_local_route() and delete_local_route() */
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
871
__attribute__((nonnull, warn_unused_result))
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
872
static bool add_delete_local_route(const bool add,
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
873
				   const char *address,
874
				   AvahiIfIndex if_index){
875
  int ret;
876
  char helper[] = "mandos-client-iprouteadddel";
877
  char add_arg[] = "add";
237.25.4 by Teddy Hogeborn
Add plugin for mandos-client to add and delete local routes.
878
  char delete_arg[] = "delete";
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
879
  char debug_flag[] = "--debug";
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
880
  char *pluginhelperdir = getenv("MANDOSPLUGINHELPERDIR");
881
  if(pluginhelperdir == NULL){
882
    if(debug){
883
      fprintf_plus(stderr, "MANDOSPLUGINHELPERDIR environment"
884
		   " variable not set; cannot run helper\n");
885
    }
886
    return false;
887
  }
888
  
889
  char interface[IF_NAMESIZE];
890
  if(if_indextoname((unsigned int)if_index, interface) == NULL){
891
    perror_plus("if_indextoname");
892
    return false;
893
  }
894
  
895
  int devnull = (int)TEMP_FAILURE_RETRY(open("/dev/null", O_RDONLY));
896
  if(devnull == -1){
897
    perror_plus("open(\"/dev/null\", O_RDONLY)");
898
    return false;
899
  }
900
  pid_t pid = fork();
901
  if(pid == 0){
902
    /* Child */
903
    /* Raise privileges */
904
    errno = raise_privileges_permanently();
905
    if(errno != 0){
906
      perror_plus("Failed to raise privileges");
907
      /* _exit(EX_NOPERM); */
908
    } else {
909
      /* Set group */
910
      errno = 0;
911
      ret = setgid(0);
912
      if(ret == -1){
913
	perror_plus("setgid");
914
	_exit(EX_NOPERM);
915
      }
916
      /* Reset supplementary groups */
917
      errno = 0;
918
      ret = setgroups(0, NULL);
919
      if(ret == -1){
920
	perror_plus("setgroups");
921
	_exit(EX_NOPERM);
922
      }
923
    }
924
    ret = dup2(devnull, STDIN_FILENO);
925
    if(ret == -1){
926
      perror_plus("dup2(devnull, STDIN_FILENO)");
927
      _exit(EX_OSERR);
928
    }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
929
    ret = close(devnull);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
930
    if(ret == -1){
931
      perror_plus("close");
932
      _exit(EX_OSERR);
933
    }
934
    ret = dup2(STDERR_FILENO, STDOUT_FILENO);
935
    if(ret == -1){
936
      perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");
937
      _exit(EX_OSERR);
938
    }
939
    int helperdir_fd = (int)TEMP_FAILURE_RETRY(open(pluginhelperdir,
940
						    O_RDONLY
941
						    | O_DIRECTORY
942
						    | O_PATH
943
						    | O_CLOEXEC));
237.25.3 by Teddy Hogeborn
mandos-client: Minor changes to check for more error conditions.
944
    if(helperdir_fd == -1){
945
      perror_plus("open");
946
      _exit(EX_UNAVAILABLE);
947
    }
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
948
    int helper_fd = (int)TEMP_FAILURE_RETRY(openat(helperdir_fd,
949
						   helper, O_RDONLY));
237.25.3 by Teddy Hogeborn
mandos-client: Minor changes to check for more error conditions.
950
    if(helper_fd == -1){
951
      perror_plus("openat");
237.7.323 by Teddy Hogeborn
plugin-runner: Minor fix: close helperdir before exiting in fork.
952
      close(helperdir_fd);
237.25.3 by Teddy Hogeborn
mandos-client: Minor changes to check for more error conditions.
953
      _exit(EX_UNAVAILABLE);
954
    }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
955
    close(helperdir_fd);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
956
#ifdef __GNUC__
957
#pragma GCC diagnostic push
958
#pragma GCC diagnostic ignored "-Wcast-qual"
959
#endif
960
    if(fexecve(helper_fd, (char *const [])
237.25.4 by Teddy Hogeborn
Add plugin for mandos-client to add and delete local routes.
961
	       { helper, add ? add_arg : delete_arg, (char *)address,
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
962
		   interface, debug ? debug_flag : NULL, NULL },
963
	       environ) == -1){
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
964
#ifdef __GNUC__
965
#pragma GCC diagnostic pop
966
#endif
967
      perror_plus("fexecve");
968
      _exit(EXIT_FAILURE);
969
    }
970
  }
971
  if(pid == -1){
972
    perror_plus("fork");
973
    return false;
974
  }
975
  int status;
976
  pid_t pret = -1;
977
  errno = 0;
978
  do {
979
    pret = waitpid(pid, &status, 0);
980
    if(pret == -1 and errno == EINTR and quit_now){
981
      int errno_raising = 0;
982
      if((errno = raise_privileges()) != 0){
983
	errno_raising = errno;
984
	perror_plus("Failed to raise privileges in order to"
985
		    " kill helper program");
986
      }
987
      if(kill(pid, SIGTERM) == -1){
988
	perror_plus("kill");
989
      }
990
      if((errno_raising == 0) and (errno = lower_privileges()) != 0){
991
	perror_plus("Failed to lower privileges after killing"
992
		    " helper program");
993
      }
994
      return false;
995
    }
996
  } while(pret == -1 and errno == EINTR);
997
  if(pret == -1){
998
    perror_plus("waitpid");
999
    return false;
1000
  }
1001
  if(WIFEXITED(status)){
1002
    if(WEXITSTATUS(status) != 0){
1003
      fprintf_plus(stderr, "Error: iprouteadddel exited"
1004
		   " with status %d\n", WEXITSTATUS(status));
1005
      return false;
1006
    }
1007
    return true;
1008
  }
1009
  if(WIFSIGNALED(status)){
1010
    fprintf_plus(stderr, "Error: iprouteadddel died by"
1011
		 " signal %d\n", WTERMSIG(status));
1012
    return false;
1013
  }
1014
  fprintf_plus(stderr, "Error: iprouteadddel crashed\n");
1015
  return false;
1016
}
1017
1018
__attribute__((nonnull, warn_unused_result))
1019
static bool add_local_route(const char *address,
1020
			    AvahiIfIndex if_index){
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1021
  if(debug){
1022
    fprintf_plus(stderr, "Adding route to %s\n", address);
1023
  }
1024
  return add_delete_local_route(true, address, if_index);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1025
}
1026
1027
__attribute__((nonnull, warn_unused_result))
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1028
static bool delete_local_route(const char *address,
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1029
			       AvahiIfIndex if_index){
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1030
  if(debug){
1031
    fprintf_plus(stderr, "Removing route to %s\n", address);
1032
  }
1033
  return add_delete_local_route(false, address, if_index);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1034
}
1035
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1036
/* Called when a Mandos server is found */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1037
__attribute__((nonnull, warn_unused_result))
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1038
static int start_mandos_communication(const char *ip, in_port_t port,
24.1.9 by Björn Påhlsson
not working midwork...
1039
				      AvahiIfIndex if_index,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1040
				      int af, mandos_context *mc){
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1041
  int ret, tcp_sd = -1;
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
1042
  ssize_t sret;
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
1043
  struct sockaddr_storage to;
13 by Björn Påhlsson
Added following support:
1044
  char *buffer = NULL;
237.2.135 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
1045
  char *decrypted_buffer = NULL;
13 by Björn Påhlsson
Added following support:
1046
  size_t buffer_length = 0;
1047
  size_t buffer_capacity = 0;
24.1.10 by Björn Påhlsson
merge commit
1048
  size_t written;
237.2.135 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
1049
  int retval = -1;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1050
  gnutls_session_t session;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1051
  int pf;			/* Protocol family */
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1052
  bool route_added = false;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1053
  
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1054
  errno = 0;
1055
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1056
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1057
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1058
    return -1;
1059
  }
1060
  
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1061
  switch(af){
1062
  case AF_INET6:
1063
    pf = PF_INET6;
1064
    break;
1065
  case AF_INET:
1066
    pf = PF_INET;
1067
    break;
1068
  default:
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1069
    fprintf_plus(stderr, "Bad address family: %d\n", af);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1070
    errno = EINVAL;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1071
    return -1;
1072
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1073
  
237.7.153 by Teddy Hogeborn
* plugins.d/mandos-client.c: Comment changes
1074
  /* If the interface is specified and we have a list of interfaces */
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
1075
  if(if_index != AVAHI_IF_UNSPEC and mc->interfaces != NULL){
1076
    /* Check if the interface is one of the interfaces we are using */
1077
    bool match = false;
1078
    {
1079
      char *interface = NULL;
1080
      while((interface=argz_next(mc->interfaces, mc->interfaces_size,
1081
				 interface))){
1082
	if(if_nametoindex(interface) == (unsigned int)if_index){
1083
	  match = true;
1084
	  break;
1085
	}
1086
      }
1087
    }
1088
    if(not match){
237.7.153 by Teddy Hogeborn
* plugins.d/mandos-client.c: Comment changes
1089
      /* This interface does not match any in the list, so we don't
1090
	 connect to the server */
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
1091
      if(debug){
1092
	char interface[IF_NAMESIZE];
1093
	if(if_indextoname((unsigned int)if_index, interface) == NULL){
1094
	  perror_plus("if_indextoname");
1095
	} else {
1096
	  fprintf_plus(stderr, "Skipping server on non-used interface"
1097
		       " \"%s\"\n",
1098
		       if_indextoname((unsigned int)if_index,
1099
				      interface));
1100
	}
1101
      }
1102
      return -1;
1103
    }
1104
  }
1105
  
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1106
  ret = init_gnutls_session(&session, mc);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1107
  if(ret != 0){
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1108
    return -1;
1109
  }
1110
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1111
  if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1112
    fprintf_plus(stderr, "Setting up a TCP connection to %s, port %"
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1113
		 PRIuMAX "\n", ip, (uintmax_t)port);
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1114
  }
13 by Björn Påhlsson
Added following support:
1115
  
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1116
  tcp_sd = socket(pf, SOCK_STREAM | SOCK_CLOEXEC, 0);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1117
  if(tcp_sd < 0){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1118
    int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1119
    perror_plus("socket");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1120
    errno = e;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1121
    goto mandos_end;
1122
  }
1123
  
1124
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1125
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1126
    goto mandos_end;
13 by Björn Påhlsson
Added following support:
1127
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
1128
  
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1129
  if(af == AF_INET6){
237.7.321 by Teddy Hogeborn
mandos-client: Don't use memset().
1130
    struct sockaddr_in6 *to6 = (struct sockaddr_in6 *)&to;
1131
    *to6 = (struct sockaddr_in6){ .sin6_family = (sa_family_t)af };
1132
    ret = inet_pton(af, ip, &to6->sin6_addr);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1133
  } else {			/* IPv4 */
237.7.321 by Teddy Hogeborn
mandos-client: Don't use memset().
1134
    struct sockaddr_in *to4 = (struct sockaddr_in *)&to;
1135
    *to4 = (struct sockaddr_in){ .sin_family = (sa_family_t)af };
1136
    ret = inet_pton(af, ip, &to4->sin_addr);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1137
  }
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1138
  if(ret < 0 ){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1139
    int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1140
    perror_plus("inet_pton");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1141
    errno = e;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1142
    goto mandos_end;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1143
  }
13 by Björn Påhlsson
Added following support:
1144
  if(ret == 0){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1145
    int e = errno;
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1146
    fprintf_plus(stderr, "Bad address: %s\n", ip);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1147
    errno = e;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1148
    goto mandos_end;
13 by Björn Påhlsson
Added following support:
1149
  }
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1150
  if(af == AF_INET6){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1151
    ((struct sockaddr_in6 *)&to)->sin6_port = htons(port);
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
1152
    if(IN6_IS_ADDR_LINKLOCAL
1153
       (&((struct sockaddr_in6 *)&to)->sin6_addr)){
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1154
      if(if_index == AVAHI_IF_UNSPEC){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1155
	fprintf_plus(stderr, "An IPv6 link-local address is"
1156
		     " incomplete without a network interface\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1157
	errno = EINVAL;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1158
	goto mandos_end;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1159
      }
1160
      /* Set the network interface number as scope */
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
1161
      ((struct sockaddr_in6 *)&to)->sin6_scope_id = (uint32_t)if_index;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1162
    }
1163
  } else {
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
1164
    ((struct sockaddr_in *)&to)->sin_port = htons(port);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1165
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1166
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1167
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1168
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1169
    goto mandos_end;
1170
  }
1171
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1172
  if(debug){
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1173
    if(af == AF_INET6 and if_index != AVAHI_IF_UNSPEC){
1174
      char interface[IF_NAMESIZE];
1175
      if(if_indextoname((unsigned int)if_index, interface) == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1176
	perror_plus("if_indextoname");
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1177
      } else {
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1178
	fprintf_plus(stderr, "Connection to: %s%%%s, port %" PRIuMAX
1179
		     "\n", ip, interface, (uintmax_t)port);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1180
      }
1181
    } else {
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1182
      fprintf_plus(stderr, "Connection to: %s, port %" PRIuMAX "\n",
1183
		   ip, (uintmax_t)port);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1184
    }
1185
    char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
1186
		 INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
1187
    if(af == AF_INET6){
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
1188
      ret = getnameinfo((struct sockaddr *)&to,
1189
			sizeof(struct sockaddr_in6),
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
1190
			addrstr, sizeof(addrstr), NULL, 0,
1191
			NI_NUMERICHOST);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1192
    } else {
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
1193
      ret = getnameinfo((struct sockaddr *)&to,
1194
			sizeof(struct sockaddr_in),
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
1195
			addrstr, sizeof(addrstr), NULL, 0,
1196
			NI_NUMERICHOST);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1197
    }
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
1198
    if(ret == EAI_SYSTEM){
1199
      perror_plus("getnameinfo");
1200
    } else if(ret != 0) {
1201
      fprintf_plus(stderr, "getnameinfo: %s", gai_strerror(ret));
1202
    } else if(strcmp(addrstr, ip) != 0){
1203
      fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
37 by Teddy Hogeborn
Non-tested commit for merge purposes.
1204
    }
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1205
  }
13 by Björn Påhlsson
Added following support:
1206
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1207
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1208
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1209
    goto mandos_end;
1210
  }
1211
  
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1212
  while(true){
1213
    if(af == AF_INET6){
1214
      ret = connect(tcp_sd, (struct sockaddr *)&to,
1215
		    sizeof(struct sockaddr_in6));
1216
    } else {
1217
      ret = connect(tcp_sd, (struct sockaddr *)&to, /* IPv4 */
1218
		    sizeof(struct sockaddr_in));
1219
    }
1220
    if(ret < 0){
237.7.338 by Teddy Hogeborn
Bug fix: Add local route also when host is unreachable.
1221
      if(((errno == ENETUNREACH) or (errno == EHOSTUNREACH))
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1222
	 and if_index != AVAHI_IF_UNSPEC
1223
	 and connect_to == NULL
1224
	 and not route_added and
1225
	 ((af == AF_INET6 and not
1226
	   IN6_IS_ADDR_LINKLOCAL(&(((struct sockaddr_in6 *)
1227
				    &to)->sin6_addr)))
1228
	  or (af == AF_INET and
1229
	      /* Not a a IPv4LL address */
1230
	      (ntohl(((struct sockaddr_in *)&to)->sin_addr.s_addr)
1231
	       & 0xFFFF0000L) != 0xA9FE0000L))){
1232
	/* Work around Avahi bug - Avahi does not announce link-local
1233
	   addresses if it has a global address, so local hosts with
1234
	   *only* a link-local address (e.g. Mandos clients) cannot
1235
	   connect to a Mandos server announced by Avahi on a server
1236
	   host with a global address.  Work around this by retrying
1237
	   with an explicit route added with the server's address.
1238
	   
1239
	   Avahi bug reference:
1240
	   http://lists.freedesktop.org/archives/avahi/2010-February/001833.html
1241
	   https://bugs.debian.org/587961
1242
	*/
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1243
	if(debug){
1244
	  fprintf_plus(stderr, "Mandos server unreachable, trying"
1245
		       " direct route\n");
1246
	}
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1247
	int e = errno;
1248
	route_added = add_local_route(ip, if_index);
1249
	if(route_added){
1250
	  continue;
1251
	}
1252
	errno = e;
1253
      }
1254
      if(errno != ECONNREFUSED or debug){
1255
	int e = errno;
1256
	perror_plus("connect");
1257
	errno = e;
1258
      }
1259
      goto mandos_end;
1260
    }
1261
    
1262
    if(quit_now){
1263
      errno = EINTR;
1264
      goto mandos_end;
1265
    }
1266
    break;
13 by Björn Påhlsson
Added following support:
1267
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
1268
  
24.1.12 by Björn Påhlsson
merge +
1269
  const char *out = mandos_protocol_version;
24.1.10 by Björn Påhlsson
merge commit
1270
  written = 0;
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1271
  while(true){
24.1.10 by Björn Påhlsson
merge commit
1272
    size_t out_size = strlen(out);
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
1273
    ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1274
					out_size - written));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1275
    if(ret == -1){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1276
      int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1277
      perror_plus("write");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1278
      errno = e;
24.1.12 by Björn Påhlsson
merge +
1279
      goto mandos_end;
24.1.10 by Björn Påhlsson
merge commit
1280
    }
24.1.12 by Björn Påhlsson
merge +
1281
    written += (size_t)ret;
24.1.10 by Björn Påhlsson
merge commit
1282
    if(written < out_size){
1283
      continue;
1284
    } else {
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1285
      if(out == mandos_protocol_version){
24.1.10 by Björn Påhlsson
merge commit
1286
	written = 0;
1287
	out = "\r\n";
1288
      } else {
1289
	break;
1290
      }
1291
    }
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1292
  
1293
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1294
      errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1295
      goto mandos_end;
1296
    }
24.1.10 by Björn Påhlsson
merge commit
1297
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
1298
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1299
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1300
    fprintf_plus(stderr, "Establishing TLS session with %s\n", ip);
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1301
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1302
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1303
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1304
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1305
    goto mandos_end;
1306
  }
1307
  
237.7.136 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Eliminate
1308
  /* This casting via intptr_t is to eliminate warning about casting
1309
     an int to a pointer type.  This is exactly how the GnuTLS Guile
1310
     function "set-session-transport-fd!" does it. */
1311
  gnutls_transport_set_ptr(session,
1312
			   (gnutls_transport_ptr_t)(intptr_t)tcp_sd);
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
1313
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1314
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1315
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1316
    goto mandos_end;
1317
  }
1318
  
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
1319
  do {
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1320
    ret = gnutls_handshake(session);
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1321
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1322
      errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1323
      goto mandos_end;
1324
    }
24.1.29 by Björn Påhlsson
Added more header file comments
1325
  } while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
13 by Björn Påhlsson
Added following support:
1326
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1327
  if(ret != GNUTLS_E_SUCCESS){
25 by Teddy Hogeborn
* mandos-clients.conf ([DEFAULT]): New section.
1328
    if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1329
      fprintf_plus(stderr, "*** GnuTLS Handshake failed ***\n");
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1330
      gnutls_perror(ret);
25 by Teddy Hogeborn
* mandos-clients.conf ([DEFAULT]): New section.
1331
    }
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1332
    errno = EPROTO;
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1333
    goto mandos_end;
13 by Björn Påhlsson
Added following support:
1334
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1335
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1336
  /* Read OpenPGP packet that contains the wanted password */
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1337
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1338
  if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1339
    fprintf_plus(stderr, "Retrieving OpenPGP encrypted password from"
1340
		 " %s\n", ip);
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1341
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
1342
  
13 by Björn Påhlsson
Added following support:
1343
  while(true){
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1344
    
1345
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1346
      errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1347
      goto mandos_end;
1348
    }
1349
    
24.1.132 by Björn Påhlsson
Fixed a bug in fallback handling
1350
    buffer_capacity = incbuffer(&buffer, buffer_length,
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1351
				buffer_capacity);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1352
    if(buffer_capacity == 0){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1353
      int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1354
      perror_plus("incbuffer");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1355
      errno = e;
24.1.12 by Björn Påhlsson
merge +
1356
      goto mandos_end;
13 by Björn Påhlsson
Added following support:
1357
    }
1358
    
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1359
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1360
      errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1361
      goto mandos_end;
1362
    }
1363
    
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
1364
    sret = gnutls_record_recv(session, buffer+buffer_length,
1365
			      BUFFER_SIZE);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1366
    if(sret == 0){
13 by Björn Påhlsson
Added following support:
1367
      break;
1368
    }
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1369
    if(sret < 0){
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
1370
      switch(sret){
13 by Björn Påhlsson
Added following support:
1371
      case GNUTLS_E_INTERRUPTED:
1372
      case GNUTLS_E_AGAIN:
1373
	break;
1374
      case GNUTLS_E_REHANDSHAKE:
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
1375
	do {
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1376
	  ret = gnutls_handshake(session);
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1377
	  
1378
	  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1379
	    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1380
	    goto mandos_end;
1381
	  }
24.1.29 by Björn Påhlsson
Added more header file comments
1382
	} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1383
	if(ret < 0){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1384
	  fprintf_plus(stderr, "*** GnuTLS Re-handshake failed "
1385
		       "***\n");
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1386
	  gnutls_perror(ret);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1387
	  errno = EPROTO;
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1388
	  goto mandos_end;
13 by Björn Påhlsson
Added following support:
1389
	}
1390
	break;
1391
      default:
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1392
	fprintf_plus(stderr, "Unknown error while reading data from"
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1393
		     " encrypted session with Mandos server\n");
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1394
	gnutls_bye(session, GNUTLS_SHUT_RDWR);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1395
	errno = EIO;
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1396
	goto mandos_end;
13 by Björn Påhlsson
Added following support:
1397
      }
1398
    } else {
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
1399
      buffer_length += (size_t) sret;
13 by Björn Påhlsson
Added following support:
1400
    }
1401
  }
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
1402
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1403
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1404
    fprintf_plus(stderr, "Closing TLS session\n");
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1405
  }
1406
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1407
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1408
    errno = EINTR;
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
1409
    goto mandos_end;
1410
  }
1411
  
1412
  do {
1413
    ret = gnutls_bye(session, GNUTLS_SHUT_RDWR);
1414
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1415
      errno = EINTR;
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
1416
      goto mandos_end;
1417
    }
1418
  } while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1419
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1420
  if(buffer_length > 0){
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
1421
    ssize_t decrypted_buffer_size;
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1422
    decrypted_buffer_size = pgp_packet_decrypt(buffer, buffer_length,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1423
					       &decrypted_buffer, mc);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1424
    if(decrypted_buffer_size >= 0){
237.2.124 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gpgme): Move variable "ret" into the
1425
      
24.1.10 by Björn Påhlsson
merge commit
1426
      written = 0;
28 by Teddy Hogeborn
* server.conf: New file.
1427
      while(written < (size_t) decrypted_buffer_size){
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1428
	if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1429
	  errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1430
	  goto mandos_end;
1431
	}
1432
	
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1433
	ret = (int)fwrite(decrypted_buffer + written, 1,
1434
			  (size_t)decrypted_buffer_size - written,
1435
			  stdout);
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1436
	if(ret == 0 and ferror(stdout)){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1437
	  int e = errno;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1438
	  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1439
	    fprintf_plus(stderr, "Error writing encrypted data: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1440
			 strerror(errno));
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1441
	  }
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1442
	  errno = e;
237.2.135 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
1443
	  goto mandos_end;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1444
	}
22 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Cast "0" argument to
1445
	written += (size_t)ret;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1446
      }
237.2.135 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
1447
      retval = 0;
13 by Björn Påhlsson
Added following support:
1448
    }
1449
  }
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1450
  
1451
  /* Shutdown procedure */
1452
  
1453
 mandos_end:
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1454
  {
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1455
    if(route_added){
237.25.6 by Teddy Hogeborn
Fix minor bugs and typos and add some more debug output.
1456
      if(not delete_local_route(ip, if_index)){
1457
	fprintf_plus(stderr, "Failed to delete local route to %s on"
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1458
		     " interface %d", ip, if_index);
1459
      }
1460
    }
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1461
    int e = errno;
1462
    free(decrypted_buffer);
1463
    free(buffer);
1464
    if(tcp_sd >= 0){
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
1465
      ret = close(tcp_sd);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1466
    }
1467
    if(ret == -1){
1468
      if(e == 0){
1469
	e = errno;
1470
      }
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1471
      perror_plus("close");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1472
    }
1473
    gnutls_deinit(session);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1474
    errno = e;
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1475
    if(quit_now){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1476
      errno = EINTR;
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1477
      retval = -1;
1478
    }
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1479
  }
13 by Björn Påhlsson
Added following support:
1480
  return retval;
1481
}
1482
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1483
__attribute__((nonnull))
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
1484
static void resolve_callback(AvahiSServiceResolver *r,
1485
			     AvahiIfIndex interface,
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1486
			     AvahiProtocol proto,
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
1487
			     AvahiResolverEvent event,
1488
			     const char *name,
1489
			     const char *type,
1490
			     const char *domain,
1491
			     const char *host_name,
1492
			     const AvahiAddress *address,
1493
			     uint16_t port,
1494
			     AVAHI_GCC_UNUSED AvahiStringList *txt,
1495
			     AVAHI_GCC_UNUSED AvahiLookupResultFlags
1496
			     flags,
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1497
			     void *mc){
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1498
  if(r == NULL){
1499
    return;
1500
  }
22 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Cast "0" argument to
1501
  
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1502
  /* Called whenever a service has been resolved successfully or
1503
     timed out */
22 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Cast "0" argument to
1504
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
1505
  if(quit_now){
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
1506
    avahi_s_service_resolver_free(r);
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
1507
    return;
1508
  }
1509
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1510
  switch(event){
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1511
  default:
1512
  case AVAHI_RESOLVER_FAILURE:
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1513
    fprintf_plus(stderr, "(Avahi Resolver) Failed to resolve service "
1514
		 "'%s' of type '%s' in domain '%s': %s\n", name, type,
1515
		 domain,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1516
		 avahi_strerror(avahi_server_errno
1517
				(((mandos_context*)mc)->server)));
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1518
    break;
22 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Cast "0" argument to
1519
    
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1520
  case AVAHI_RESOLVER_FOUND:
1521
    {
1522
      char ip[AVAHI_ADDRESS_STR_MAX];
1523
      avahi_address_snprint(ip, sizeof(ip), address);
1524
      if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1525
	fprintf_plus(stderr, "Mandos server \"%s\" found on %s (%s, %"
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1526
		     PRIdMAX ") on port %" PRIu16 "\n", name,
1527
		     host_name, ip, (intmax_t)interface, port);
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1528
      }
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1529
      int ret = start_mandos_communication(ip, (in_port_t)port,
1530
					   interface,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1531
					   avahi_proto_to_af(proto),
1532
					   mc);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1533
      if(ret == 0){
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
1534
	avahi_simple_poll_quit(simple_poll);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1535
      } else {
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1536
	if(not add_server(ip, (in_port_t)port, interface,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1537
			  avahi_proto_to_af(proto),
1538
			  &((mandos_context*)mc)->current_server)){
237.11.27 by teddy at bsnet
* plugins.d/mandos-client.c (add_server): Return bool; all callers
1539
	  fprintf_plus(stderr, "Failed to add server \"%s\" to server"
1540
		       " list\n", name);
1541
	}
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1542
      }
13 by Björn Påhlsson
Added following support:
1543
    }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1544
  }
1545
  avahi_s_service_resolver_free(r);
13 by Björn Påhlsson
Added following support:
1546
}
1547
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1548
static void browse_callback(AvahiSServiceBrowser *b,
1549
			    AvahiIfIndex interface,
1550
			    AvahiProtocol protocol,
1551
			    AvahiBrowserEvent event,
1552
			    const char *name,
1553
			    const char *type,
1554
			    const char *domain,
1555
			    AVAHI_GCC_UNUSED AvahiLookupResultFlags
1556
			    flags,
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1557
			    void *mc){
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1558
  if(b == NULL){
1559
    return;
1560
  }
24.1.9 by Björn Påhlsson
not working midwork...
1561
  
1562
  /* Called whenever a new services becomes available on the LAN or
1563
     is removed from the LAN */
1564
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1565
  if(quit_now){
1566
    return;
1567
  }
1568
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1569
  switch(event){
24.1.9 by Björn Påhlsson
not working midwork...
1570
  default:
1571
  case AVAHI_BROWSER_FAILURE:
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1572
    
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1573
    fprintf_plus(stderr, "(Avahi browser) %s\n",
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1574
		 avahi_strerror(avahi_server_errno
1575
				(((mandos_context*)mc)->server)));
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
1576
    avahi_simple_poll_quit(simple_poll);
24.1.9 by Björn Påhlsson
not working midwork...
1577
    return;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1578
    
24.1.9 by Björn Påhlsson
not working midwork...
1579
  case AVAHI_BROWSER_NEW:
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1580
    /* We ignore the returned Avahi resolver object. In the callback
1581
       function we free it. If the Avahi server is terminated before
1582
       the callback function is called the Avahi server will free the
1583
       resolver for us. */
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1584
    
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1585
    if(avahi_s_service_resolver_new(((mandos_context*)mc)->server,
1586
				    interface, protocol, name, type,
1587
				    domain, protocol, 0,
1588
				    resolve_callback, mc) == NULL)
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1589
      fprintf_plus(stderr, "Avahi: Failed to resolve service '%s':"
1590
		   " %s\n", name,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1591
		   avahi_strerror(avahi_server_errno
1592
				  (((mandos_context*)mc)->server)));
24.1.9 by Björn Påhlsson
not working midwork...
1593
    break;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1594
    
24.1.9 by Björn Påhlsson
not working midwork...
1595
  case AVAHI_BROWSER_REMOVE:
1596
    break;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1597
    
24.1.9 by Björn Påhlsson
not working midwork...
1598
  case AVAHI_BROWSER_ALL_FOR_NOW:
1599
  case AVAHI_BROWSER_CACHE_EXHAUSTED:
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1600
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1601
      fprintf_plus(stderr, "No Mandos server found, still"
1602
		   " searching...\n");
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1603
    }
24.1.9 by Björn Påhlsson
not working midwork...
1604
    break;
1605
  }
13 by Björn Påhlsson
Added following support:
1606
}
1607
237.7.33 by Teddy Hogeborn
Merge from Björn.
1608
/* Signal handler that stops main loop after SIGTERM */
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
1609
static void handle_sigterm(int sig){
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
1610
  if(quit_now){
1611
    return;
1612
  }
1613
  quit_now = 1;
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
1614
  signal_received = sig;
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
1615
  int old_errno = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1616
  /* set main loop to exit */
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
1617
  if(simple_poll != NULL){
1618
    avahi_simple_poll_quit(simple_poll);
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
1619
  }
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
1620
  errno = old_errno;
1621
}
1622
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1623
__attribute__((nonnull, warn_unused_result))
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1624
bool get_flags(const char *ifname, struct ifreq *ifr){
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1625
  int ret;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1626
  error_t ret_errno;
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1627
  
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1628
  int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1629
  if(s < 0){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1630
    ret_errno = errno;
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1631
    perror_plus("socket");
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1632
    errno = ret_errno;
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1633
    return false;
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1634
  }
237.7.346 by Teddy Hogeborn
plugins.d/mandos-client.c (get_flags): Use strncpy(), not strcpy().
1635
  strncpy(ifr->ifr_name, ifname, IF_NAMESIZE);
1636
  ifr->ifr_name[IF_NAMESIZE-1] = '\0'; /* NUL terminate */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1637
  ret = ioctl(s, SIOCGIFFLAGS, ifr);
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1638
  if(ret == -1){
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1639
    if(debug){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1640
      ret_errno = errno;
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1641
      perror_plus("ioctl SIOCGIFFLAGS");
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1642
      errno = ret_errno;
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1643
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1644
    return false;
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1645
  }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1646
  return true;
1647
}
1648
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1649
__attribute__((nonnull, warn_unused_result))
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1650
bool good_flags(const char *ifname, const struct ifreq *ifr){
1651
  
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1652
  /* Reject the loopback device */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1653
  if(ifr->ifr_flags & IFF_LOOPBACK){
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1654
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1655
      fprintf_plus(stderr, "Rejecting loopback interface \"%s\"\n",
1656
		   ifname);
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1657
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1658
    return false;
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1659
  }
1660
  /* Accept point-to-point devices only if connect_to is specified */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1661
  if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1662
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1663
      fprintf_plus(stderr, "Accepting point-to-point interface"
1664
		   " \"%s\"\n", ifname);
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1665
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1666
    return true;
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1667
  }
1668
  /* Otherwise, reject non-broadcast-capable devices */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1669
  if(not (ifr->ifr_flags & IFF_BROADCAST)){
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1670
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1671
      fprintf_plus(stderr, "Rejecting non-broadcast interface"
1672
		   " \"%s\"\n", ifname);
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1673
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1674
    return false;
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1675
  }
237.7.29 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
1676
  /* Reject non-ARP interfaces (including dummy interfaces) */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1677
  if(ifr->ifr_flags & IFF_NOARP){
237.7.29 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
1678
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1679
      fprintf_plus(stderr, "Rejecting non-ARP interface \"%s\"\n",
1680
		   ifname);
237.7.29 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
1681
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1682
    return false;
237.7.29 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
1683
  }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1684
  
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1685
  /* Accept this device */
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1686
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1687
    fprintf_plus(stderr, "Interface \"%s\" is good\n", ifname);
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1688
  }
1689
  return true;
1690
}
1691
1692
/* 
1693
 * This function determines if a directory entry in /sys/class/net
1694
 * corresponds to an acceptable network device.
1695
 * (This function is passed to scandir(3) as a filter function.)
1696
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1697
__attribute__((nonnull, warn_unused_result))
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1698
int good_interface(const struct dirent *if_entry){
1699
  if(if_entry->d_name[0] == '.'){
1700
    return 0;
1701
  }
237.16.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Add error message.
1702
  
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1703
  struct ifreq ifr;
1704
  if(not get_flags(if_entry->d_name, &ifr)){
237.16.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Add error message.
1705
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1706
      fprintf_plus(stderr, "Failed to get flags for interface "
1707
		   "\"%s\"\n", if_entry->d_name);
237.16.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Add error message.
1708
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1709
    return 0;
1710
  }
1711
  
1712
  if(not good_flags(if_entry->d_name, &ifr)){
1713
    return 0;
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1714
  }
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1715
  return 1;
1716
}
1717
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1718
/* 
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1719
 * This function determines if a network interface is up.
1720
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1721
__attribute__((nonnull, warn_unused_result))
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1722
bool interface_is_up(const char *interface){
1723
  struct ifreq ifr;
1724
  if(not get_flags(interface, &ifr)){
1725
    if(debug){
1726
      fprintf_plus(stderr, "Failed to get flags for interface "
1727
		   "\"%s\"\n", interface);
1728
    }
1729
    return false;
1730
  }
1731
  
1732
  return (bool)(ifr.ifr_flags & IFF_UP);
1733
}
1734
1735
/* 
1736
 * This function determines if a network interface is running
1737
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1738
__attribute__((nonnull, warn_unused_result))
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1739
bool interface_is_running(const char *interface){
1740
  struct ifreq ifr;
1741
  if(not get_flags(interface, &ifr)){
1742
    if(debug){
1743
      fprintf_plus(stderr, "Failed to get flags for interface "
1744
		   "\"%s\"\n", interface);
1745
    }
1746
    return false;
1747
  }
1748
  
1749
  return (bool)(ifr.ifr_flags & IFF_RUNNING);
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1750
}
1751
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1752
__attribute__((nonnull, pure, warn_unused_result))
24.1.172 by Björn Påhlsson
using scandir instead of readdir
1753
int notdotentries(const struct dirent *direntry){
1754
  /* Skip "." and ".." */
1755
  if(direntry->d_name[0] == '.'
1756
     and (direntry->d_name[1] == '\0'
1757
	  or (direntry->d_name[1] == '.'
1758
	      and direntry->d_name[2] == '\0'))){
1759
    return 0;
1760
  }
1761
  return 1;
1762
}
1763
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1764
/* Is this directory entry a runnable program? */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1765
__attribute__((nonnull, warn_unused_result))
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1766
int runnable_hook(const struct dirent *direntry){
1767
  int ret;
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1768
  size_t sret;
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1769
  struct stat st;
1770
  
1771
  if((direntry->d_name)[0] == '\0'){
1772
    /* Empty name? */
1773
    return 0;
1774
  }
1775
  
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1776
  sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1777
		"abcdefghijklmnopqrstuvwxyz"
1778
		"0123456789"
237.7.236 by Teddy Hogeborn
Minor bug fix in mandos-client: Allow periods in network hook names.
1779
		"_.-");
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1780
  if((direntry->d_name)[sret] != '\0'){
1781
    /* Contains non-allowed characters */
1782
    if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1783
      fprintf_plus(stderr, "Ignoring hook \"%s\" with bad name\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1784
		   direntry->d_name);
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1785
    }
1786
    return 0;
1787
  }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1788
  
237.7.241 by Teddy Hogeborn
Make mandos-client use fstatat().
1789
  ret = fstatat(hookdir_fd, direntry->d_name, &st, 0);
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1790
  if(ret == -1){
1791
    if(debug){
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1792
      perror_plus("Could not stat hook");
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1793
    }
1794
    return 0;
1795
  }
237.16.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Add error message.
1796
  if(not (S_ISREG(st.st_mode))){
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1797
    /* Not a regular file */
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1798
    if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1799
      fprintf_plus(stderr, "Ignoring hook \"%s\" - not a file\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1800
		   direntry->d_name);
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1801
    }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1802
    return 0;
1803
  }
1804
  if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1805
    /* Not executable */
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1806
    if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1807
      fprintf_plus(stderr, "Ignoring hook \"%s\" - not executable\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1808
		   direntry->d_name);
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1809
    }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1810
    return 0;
1811
  }
237.16.12 by Teddy Hogeborn
* plugins.d/mandos-client.c (runnable_hook): Add debug output.
1812
  if(debug){
1813
    fprintf_plus(stderr, "Hook \"%s\" is acceptable\n",
1814
		 direntry->d_name);
1815
  }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1816
  return 1;
1817
}
1818
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1819
__attribute__((nonnull, warn_unused_result))
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1820
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval,
1821
			    mandos_context *mc){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1822
  int ret;
1823
  struct timespec now;
1824
  struct timespec waited_time;
1825
  intmax_t block_time;
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
1826
  
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1827
  while(true){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1828
    if(mc->current_server == NULL){
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
1829
      if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1830
	fprintf_plus(stderr, "Wait until first server is found."
1831
		     " No timeout!\n");
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1832
      }
1833
      ret = avahi_simple_poll_iterate(s, -1);
1834
    } else {
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
1835
      if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1836
	fprintf_plus(stderr, "Check current_server if we should run"
1837
		     " it, or wait\n");
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1838
      }
1839
      /* the current time */
1840
      ret = clock_gettime(CLOCK_MONOTONIC, &now);
1841
      if(ret == -1){
1842
	perror_plus("clock_gettime");
1843
	return -1;
1844
      }
1845
      /* Calculating in ms how long time between now and server
1846
	 who we visted longest time ago. Now - last seen.  */
237.7.33 by Teddy Hogeborn
Merge from Björn.
1847
      waited_time.tv_sec = (now.tv_sec
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1848
			    - mc->current_server->last_seen.tv_sec);
237.7.33 by Teddy Hogeborn
Merge from Björn.
1849
      waited_time.tv_nsec = (now.tv_nsec
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1850
			     - mc->current_server->last_seen.tv_nsec);
237.7.33 by Teddy Hogeborn
Merge from Björn.
1851
      /* total time is 10s/10,000ms.
1852
	 Converting to s from ms by dividing by 1,000,
1853
	 and ns to ms by dividing by 1,000,000. */
1854
      block_time = ((retry_interval
1855
		     - ((intmax_t)waited_time.tv_sec * 1000))
1856
		    - ((intmax_t)waited_time.tv_nsec / 1000000));
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
1857
      
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
1858
      if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1859
	fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1860
		     block_time);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1861
      }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
1862
      
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1863
      if(block_time <= 0){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1864
	ret = start_mandos_communication(mc->current_server->ip,
1865
					 mc->current_server->port,
1866
					 mc->current_server->if_index,
1867
					 mc->current_server->af, mc);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1868
	if(ret == 0){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1869
	  avahi_simple_poll_quit(s);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1870
	  return 0;
1871
	}
237.7.33 by Teddy Hogeborn
Merge from Björn.
1872
	ret = clock_gettime(CLOCK_MONOTONIC,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1873
			    &mc->current_server->last_seen);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1874
	if(ret == -1){
1875
	  perror_plus("clock_gettime");
1876
	  return -1;
1877
	}
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1878
	mc->current_server = mc->current_server->next;
237.7.33 by Teddy Hogeborn
Merge from Björn.
1879
	block_time = 0; 	/* Call avahi to find new Mandos
1880
				   servers, but don't block */
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1881
      }
1882
      
1883
      ret = avahi_simple_poll_iterate(s, (int)block_time);
1884
    }
1885
    if(ret != 0){
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
1886
      if(ret > 0 or errno != EINTR){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1887
	return (ret != 1) ? ret : 0;
1888
      }
1889
    }
1890
  }
1891
}
1892
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1893
__attribute__((nonnull))
1894
void run_network_hooks(const char *mode, const char *interface,
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
1895
		       const float delay){
237.7.252 by Teddy Hogeborn
mandos-client: Fix some bugs on error conditions.
1896
  struct dirent **direntries = NULL;
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1897
  if(hookdir_fd == -1){
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1898
    hookdir_fd = open(hookdir, O_RDONLY | O_DIRECTORY | O_PATH
1899
		      | O_CLOEXEC);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1900
    if(hookdir_fd == -1){
1901
      if(errno == ENOENT){
1902
	if(debug){
1903
	  fprintf_plus(stderr, "Network hook directory \"%s\" not"
1904
		       " found\n", hookdir);
1905
	}
1906
      } else {
1907
	perror_plus("open");
1908
      }
1909
      return;
1910
    }
1911
  }
1912
  int numhooks = scandirat(hookdir_fd, ".", &direntries,
1913
			   runnable_hook, alphasort);
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
1914
  if(numhooks == -1){
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1915
    perror_plus("scandir");
1916
    return;
1917
  }
1918
  struct dirent *direntry;
1919
  int ret;
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
1920
  int devnull = (int)TEMP_FAILURE_RETRY(open("/dev/null", O_RDONLY));
1921
  if(devnull == -1){
1922
    perror_plus("open(\"/dev/null\", O_RDONLY)");
1923
    return;
1924
  }
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1925
  for(int i = 0; i < numhooks; i++){
1926
    direntry = direntries[i];
1927
    if(debug){
1928
      fprintf_plus(stderr, "Running network hook \"%s\"\n",
1929
		   direntry->d_name);
1930
    }
1931
    pid_t hook_pid = fork();
1932
    if(hook_pid == 0){
1933
      /* Child */
1934
      /* Raise privileges */
237.7.254 by Teddy Hogeborn
mandos-client: Better error messages.
1935
      errno = raise_privileges_permanently();
1936
      if(errno != 0){
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1937
	perror_plus("Failed to raise privileges");
1938
	_exit(EX_NOPERM);
1939
      }
1940
      /* Set group */
1941
      errno = 0;
1942
      ret = setgid(0);
1943
      if(ret == -1){
1944
	perror_plus("setgid");
1945
	_exit(EX_NOPERM);
1946
      }
1947
      /* Reset supplementary groups */
1948
      errno = 0;
1949
      ret = setgroups(0, NULL);
1950
      if(ret == -1){
1951
	perror_plus("setgroups");
1952
	_exit(EX_NOPERM);
1953
      }
1954
      ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1955
      if(ret == -1){
1956
	perror_plus("setenv");
1957
	_exit(EX_OSERR);
1958
      }
1959
      ret = setenv("DEVICE", interface, 1);
1960
      if(ret == -1){
1961
	perror_plus("setenv");
1962
	_exit(EX_OSERR);
1963
      }
1964
      ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
1965
      if(ret == -1){
1966
	perror_plus("setenv");
1967
	_exit(EX_OSERR);
1968
      }
1969
      ret = setenv("MODE", mode, 1);
1970
      if(ret == -1){
1971
	perror_plus("setenv");
1972
	_exit(EX_OSERR);
1973
      }
1974
      char *delaystring;
1975
      ret = asprintf(&delaystring, "%f", (double)delay);
1976
      if(ret == -1){
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
1977
	perror_plus("asprintf");
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1978
	_exit(EX_OSERR);
1979
      }
1980
      ret = setenv("DELAY", delaystring, 1);
1981
      if(ret == -1){
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
1982
	free(delaystring);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1983
	perror_plus("setenv");
1984
	_exit(EX_OSERR);
1985
      }
1986
      free(delaystring);
1987
      if(connect_to != NULL){
1988
	ret = setenv("CONNECT", connect_to, 1);
1989
	if(ret == -1){
1990
	  perror_plus("setenv");
1991
	  _exit(EX_OSERR);
1992
	}
1993
      }
237.25.3 by Teddy Hogeborn
mandos-client: Minor changes to check for more error conditions.
1994
      int hook_fd = (int)TEMP_FAILURE_RETRY(openat(hookdir_fd,
1995
						   direntry->d_name,
1996
						   O_RDONLY));
237.7.244 by Teddy Hogeborn
Bug fix for mandos-client: Run the network hook, not the directory.
1997
      if(hook_fd == -1){
1998
	perror_plus("openat");
1999
	_exit(EXIT_FAILURE);
2000
      }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2001
      if(close(hookdir_fd) == -1){
237.7.244 by Teddy Hogeborn
Bug fix for mandos-client: Run the network hook, not the directory.
2002
	perror_plus("close");
2003
	_exit(EXIT_FAILURE);
2004
      }
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
2005
      ret = dup2(devnull, STDIN_FILENO);
2006
      if(ret == -1){
2007
	perror_plus("dup2(devnull, STDIN_FILENO)");
2008
	_exit(EX_OSERR);
2009
      }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2010
      ret = close(devnull);
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
2011
      if(ret == -1){
2012
	perror_plus("close");
2013
	_exit(EX_OSERR);
2014
      }
2015
      ret = dup2(STDERR_FILENO, STDOUT_FILENO);
2016
      if(ret == -1){
2017
	perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");
2018
	_exit(EX_OSERR);
2019
      }
237.7.244 by Teddy Hogeborn
Bug fix for mandos-client: Run the network hook, not the directory.
2020
      if(fexecve(hook_fd, (char *const []){ direntry->d_name, NULL },
2021
		 environ) == -1){
237.7.240 by Teddy Hogeborn
Make mandos-client use fexecve().
2022
	perror_plus("fexecve");
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2023
	_exit(EXIT_FAILURE);
2024
      }
2025
    } else {
237.7.281 by Teddy Hogeborn
mandos-client: Bug fix: Check fork() return value.
2026
      if(hook_pid == -1){
2027
	perror_plus("fork");
2028
	free(direntry);
2029
	continue;
2030
      }
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2031
      int status;
2032
      if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
2033
	perror_plus("waitpid");
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2034
	free(direntry);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2035
	continue;
2036
      }
2037
      if(WIFEXITED(status)){
2038
	if(WEXITSTATUS(status) != 0){
2039
	  fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
2040
		       " with status %d\n", direntry->d_name,
2041
		       WEXITSTATUS(status));
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2042
	  free(direntry);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2043
	  continue;
2044
	}
2045
      } else if(WIFSIGNALED(status)){
2046
	fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
2047
		     " signal %d\n", direntry->d_name,
2048
		     WTERMSIG(status));
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2049
	free(direntry);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2050
	continue;
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
2051
      } else {
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2052
	fprintf_plus(stderr, "Warning: network hook \"%s\""
2053
		     " crashed\n", direntry->d_name);
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2054
	free(direntry);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2055
	continue;
2056
      }
2057
    }
2058
    if(debug){
2059
      fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
2060
		   direntry->d_name);
2061
    }
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2062
    free(direntry);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2063
  }
237.7.252 by Teddy Hogeborn
mandos-client: Fix some bugs on error conditions.
2064
  free(direntries);
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2065
  if(close(hookdir_fd) == -1){
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
2066
    perror_plus("close");
2067
  } else {
2068
    hookdir_fd = -1;
2069
  }
2070
  close(devnull);
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
2071
}
2072
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2073
__attribute__((nonnull, warn_unused_result))
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2074
error_t bring_up_interface(const char *const interface,
2075
			   const float delay){
2076
  error_t old_errno = errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2077
  int ret;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2078
  struct ifreq network;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2079
  unsigned int if_index = if_nametoindex(interface);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2080
  if(if_index == 0){
2081
    fprintf_plus(stderr, "No such interface: \"%s\"\n", interface);
237.22.2 by Teddy Hogeborn
* plugins.d/mandos-client.c (bring_up_interface): Bug fix: Return
2082
    errno = old_errno;
2083
    return ENXIO;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2084
  }
2085
  
2086
  if(quit_now){
237.22.2 by Teddy Hogeborn
* plugins.d/mandos-client.c (bring_up_interface): Bug fix: Return
2087
    errno = old_errno;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2088
    return EINTR;
2089
  }
2090
  
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2091
  if(not interface_is_up(interface)){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2092
    error_t ret_errno = 0, ioctl_errno = 0;
2093
    if(not get_flags(interface, &network)){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2094
      ret_errno = errno;
2095
      fprintf_plus(stderr, "Failed to get flags for interface "
2096
		   "\"%s\"\n", interface);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2097
      errno = old_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2098
      return ret_errno;
2099
    }
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2100
    network.ifr_flags |= IFF_UP; /* set flag */
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2101
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2102
    int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
2103
    if(sd == -1){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2104
      ret_errno = errno;
2105
      perror_plus("socket");
2106
      errno = old_errno;
2107
      return ret_errno;
2108
    }
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2109
    
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2110
    if(quit_now){
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2111
      ret = close(sd);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2112
      if(ret == -1){
2113
	perror_plus("close");
2114
      }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2115
      errno = old_errno;
2116
      return EINTR;
2117
    }
2118
    
2119
    if(debug){
2120
      fprintf_plus(stderr, "Bringing up interface \"%s\"\n",
2121
		   interface);
2122
    }
2123
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2124
    /* Raise privileges */
2125
    ret_errno = raise_privileges();
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
2126
    if(ret_errno != 0){
237.7.254 by Teddy Hogeborn
mandos-client: Better error messages.
2127
      errno = ret_errno;
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
2128
      perror_plus("Failed to raise privileges");
2129
    }
2130
    
2131
#ifdef __linux__
2132
    int ret_linux;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2133
    bool restore_loglevel = false;
2134
    if(ret_errno == 0){
2135
      /* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
2136
	 messages about the network interface to mess up the prompt */
2137
      ret_linux = klogctl(8, NULL, 5);
2138
      if(ret_linux == -1){
2139
	perror_plus("klogctl");
2140
      } else {
2141
	restore_loglevel = true;
2142
      }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2143
    }
2144
#endif	/* __linux__ */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2145
    int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
2146
    ioctl_errno = errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2147
#ifdef __linux__
2148
    if(restore_loglevel){
2149
      ret_linux = klogctl(7, NULL, 0);
2150
      if(ret_linux == -1){
2151
	perror_plus("klogctl");
2152
      }
2153
    }
2154
#endif	/* __linux__ */
2155
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2156
    /* If raise_privileges() succeeded above */
2157
    if(ret_errno == 0){
2158
      /* Lower privileges */
2159
      ret_errno = lower_privileges();
2160
      if(ret_errno != 0){
2161
	errno = ret_errno;
2162
	perror_plus("Failed to lower privileges");
2163
      }
2164
    }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2165
    
2166
    /* Close the socket */
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2167
    ret = close(sd);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2168
    if(ret == -1){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2169
      perror_plus("close");
2170
    }
2171
    
2172
    if(ret_setflags == -1){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2173
      errno = ioctl_errno;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2174
      perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
237.22.2 by Teddy Hogeborn
* plugins.d/mandos-client.c (bring_up_interface): Bug fix: Return
2175
      errno = old_errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2176
      return ioctl_errno;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2177
    }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2178
  } else if(debug){
2179
    fprintf_plus(stderr, "Interface \"%s\" is already up; good\n",
2180
		 interface);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2181
  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2182
  
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2183
  /* Sleep checking until interface is running.
2184
     Check every 0.25s, up to total time of delay */
2185
  for(int i=0; i < delay * 4; i++){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2186
    if(interface_is_running(interface)){
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2187
      break;
2188
    }
2189
    struct timespec sleeptime = { .tv_nsec = 250000000 };
2190
    ret = nanosleep(&sleeptime, NULL);
2191
    if(ret == -1 and errno != EINTR){
2192
      perror_plus("nanosleep");
2193
    }
2194
  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2195
  
2196
  errno = old_errno;
2197
  return 0;
2198
}
2199
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2200
__attribute__((nonnull, warn_unused_result))
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2201
error_t take_down_interface(const char *const interface){
2202
  error_t old_errno = errno;
2203
  struct ifreq network;
2204
  unsigned int if_index = if_nametoindex(interface);
2205
  if(if_index == 0){
2206
    fprintf_plus(stderr, "No such interface: \"%s\"\n", interface);
2207
    errno = old_errno;
2208
    return ENXIO;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2209
  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2210
  if(interface_is_up(interface)){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2211
    error_t ret_errno = 0, ioctl_errno = 0;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2212
    if(not get_flags(interface, &network) and debug){
2213
      ret_errno = errno;
2214
      fprintf_plus(stderr, "Failed to get flags for interface "
2215
		   "\"%s\"\n", interface);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2216
      errno = old_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2217
      return ret_errno;
2218
    }
2219
    network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
2220
    
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
2221
    int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2222
    if(sd == -1){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2223
      ret_errno = errno;
2224
      perror_plus("socket");
2225
      errno = old_errno;
2226
      return ret_errno;
2227
    }
2228
    
2229
    if(debug){
2230
      fprintf_plus(stderr, "Taking down interface \"%s\"\n",
2231
		   interface);
2232
    }
2233
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2234
    /* Raise privileges */
2235
    ret_errno = raise_privileges();
2236
    if(ret_errno != 0){
237.7.254 by Teddy Hogeborn
mandos-client: Better error messages.
2237
      errno = ret_errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2238
      perror_plus("Failed to raise privileges");
2239
    }
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
2240
    
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
2241
    int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2242
    ioctl_errno = errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2243
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2244
    /* If raise_privileges() succeeded above */
2245
    if(ret_errno == 0){
2246
      /* Lower privileges */
2247
      ret_errno = lower_privileges();
2248
      if(ret_errno != 0){
2249
	errno = ret_errno;
2250
	perror_plus("Failed to lower privileges");
2251
      }
2252
    }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2253
    
2254
    /* Close the socket */
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2255
    int ret = close(sd);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2256
    if(ret == -1){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2257
      perror_plus("close");
2258
    }
2259
    
2260
    if(ret_setflags == -1){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2261
      errno = ioctl_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2262
      perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
2263
      errno = old_errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2264
      return ioctl_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2265
    }
2266
  } else if(debug){
2267
    fprintf_plus(stderr, "Interface \"%s\" is already down; odd\n",
2268
		 interface);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2269
  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2270
  
237.22.2 by Teddy Hogeborn
* plugins.d/mandos-client.c (bring_up_interface): Bug fix: Return
2271
  errno = old_errno;
2272
  return 0;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2273
}
2274
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
2275
int main(int argc, char *argv[]){
237.7.291 by Teddy Hogeborn
Automatically determine the number of DH bits in the TLS handshake.
2276
  mandos_context mc = { .server = NULL, .dh_bits = 0,
237.7.325 by Teddy Hogeborn
Bug fix for GnuTLS 3: be compatible with old 2048-bit DSA keys.
2277
			.priority = "SECURE256:!CTYPE-X.509"
2278
			":+CTYPE-OPENPGP:!RSA:+SIGN-DSA-SHA256",
2279
			.current_server = NULL, .interfaces = NULL,
2280
			.interfaces_size = 0 };
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2281
  AvahiSServiceBrowser *sb = NULL;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2282
  error_t ret_errno;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2283
  int ret;
2284
  intmax_t tmpmax;
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2285
  char *tmp;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2286
  int exitcode = EXIT_SUCCESS;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2287
  char *interfaces_to_take_down = NULL;
2288
  size_t interfaces_to_take_down_size = 0;
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
2289
  char run_tempdir[] = "/run/tmp/mandosXXXXXX";
2290
  char old_tempdir[] = "/tmp/mandosXXXXXX";
2291
  char *tempdir = NULL;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2292
  AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
2293
  const char *seckey = PATHDIR "/" SECKEY;
2294
  const char *pubkey = PATHDIR "/" PUBKEY;
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
2295
  const char *dh_params_file = NULL;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2296
  char *interfaces_hooks = NULL;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2297
  
2298
  bool gnutls_initialized = false;
2299
  bool gpgme_initialized = false;
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2300
  float delay = 2.5f;
237.7.33 by Teddy Hogeborn
Merge from Björn.
2301
  double retry_interval = 10; /* 10s between trying a server and
2302
				 retrying the same server again */
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2303
  
237.2.132 by Teddy Hogeborn
* init.d-mandos (Required-Start, Required-Stop): Bug fix: Added
2304
  struct sigaction old_sigterm_action = { .sa_handler = SIG_DFL };
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
2305
  struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2306
  
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
2307
  uid = getuid();
2308
  gid = getgid();
2309
  
2310
  /* Lower any group privileges we might have, just to be safe */
2311
  errno = 0;
2312
  ret = setgid(gid);
2313
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2314
    perror_plus("setgid");
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
2315
  }
2316
  
2317
  /* Lower user privileges (temporarily) */
2318
  errno = 0;
2319
  ret = seteuid(uid);
2320
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2321
    perror_plus("seteuid");
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
2322
  }
2323
  
2324
  if(quit_now){
2325
    goto end;
2326
  }
2327
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2328
  {
2329
    struct argp_option options[] = {
2330
      { .name = "debug", .key = 128,
2331
	.doc = "Debug mode", .group = 3 },
2332
      { .name = "connect", .key = 'c',
2333
	.arg = "ADDRESS:PORT",
2334
	.doc = "Connect directly to a specific Mandos server",
2335
	.group = 1 },
2336
      { .name = "interface", .key = 'i',
2337
	.arg = "NAME",
237.2.67 by Teddy Hogeborn
Four new interrelated features:
2338
	.doc = "Network interface that will be used to search for"
2339
	" Mandos servers",
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2340
	.group = 1 },
2341
      { .name = "seckey", .key = 's',
2342
	.arg = "FILE",
2343
	.doc = "OpenPGP secret key file base name",
2344
	.group = 1 },
2345
      { .name = "pubkey", .key = 'p',
2346
	.arg = "FILE",
2347
	.doc = "OpenPGP public key file base name",
2348
	.group = 2 },
2349
      { .name = "dh-bits", .key = 129,
2350
	.arg = "BITS",
2351
	.doc = "Bit length of the prime number used in the"
2352
	" Diffie-Hellman key exchange",
2353
	.group = 2 },
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
2354
      { .name = "dh-params", .key = 134,
2355
	.arg = "FILE",
2356
	.doc = "PEM-encoded PKCS#3 file with pre-generated parameters"
2357
	" for the Diffie-Hellman key exchange",
2358
	.group = 2 },
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2359
      { .name = "priority", .key = 130,
2360
	.arg = "STRING",
2361
	.doc = "GnuTLS priority string for the TLS handshake",
2362
	.group = 1 },
2363
      { .name = "delay", .key = 131,
2364
	.arg = "SECONDS",
2365
	.doc = "Maximum delay to wait for interface startup",
2366
	.group = 2 },
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2367
      { .name = "retry", .key = 132,
2368
	.arg = "SECONDS",
237.17.1 by teddy at recompile
Add wireless network hook
2369
	.doc = "Retry interval used when denied by the Mandos server",
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2370
	.group = 2 },
237.16.4 by teddy at bsnet
* plugins.d/mandos-client.c (runnable_hook): Bug fix: stat using the
2371
      { .name = "network-hook-dir", .key = 133,
2372
	.arg = "DIR",
2373
	.doc = "Directory where network hooks are located",
2374
	.group = 2 },
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2375
      /*
2376
       * These reproduce what we would get without ARGP_NO_HELP
2377
       */
2378
      { .name = "help", .key = '?',
2379
	.doc = "Give this help list", .group = -1 },
2380
      { .name = "usage", .key = -3,
2381
	.doc = "Give a short usage message", .group = -1 },
2382
      { .name = "version", .key = 'V',
2383
	.doc = "Print program version", .group = -1 },
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2384
      { .name = NULL }
2385
    };
2386
    
2387
    error_t parse_opt(int key, char *arg,
2388
		      struct argp_state *state){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2389
      errno = 0;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2390
      switch(key){
2391
      case 128:			/* --debug */
2392
	debug = true;
2393
	break;
2394
      case 'c':			/* --connect */
2395
	connect_to = arg;
2396
	break;
2397
      case 'i':			/* --interface */
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2398
	ret_errno = argz_add_sep(&mc.interfaces, &mc.interfaces_size,
2399
				 arg, (int)',');
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2400
	if(ret_errno != 0){
2401
	  argp_error(state, "%s", strerror(ret_errno));
2402
	}
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2403
	break;
2404
      case 's':			/* --seckey */
2405
	seckey = arg;
2406
	break;
2407
      case 'p':			/* --pubkey */
2408
	pubkey = arg;
2409
	break;
2410
      case 129:			/* --dh-bits */
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2411
	errno = 0;
2412
	tmpmax = strtoimax(arg, &tmp, 10);
2413
	if(errno != 0 or tmp == arg or *tmp != '\0'
2414
	   or tmpmax != (typeof(mc.dh_bits))tmpmax){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2415
	  argp_error(state, "Bad number of DH bits");
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2416
	}
2417
	mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
2418
	break;
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
2419
      case 134:			/* --dh-params */
2420
	dh_params_file = arg;
2421
	break;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2422
      case 130:			/* --priority */
2423
	mc.priority = arg;
2424
	break;
2425
      case 131:			/* --delay */
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2426
	errno = 0;
2427
	delay = strtof(arg, &tmp);
2428
	if(errno != 0 or tmp == arg or *tmp != '\0'){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2429
	  argp_error(state, "Bad delay");
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2430
	}
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2431
      case 132:			/* --retry */
2432
	errno = 0;
2433
	retry_interval = strtod(arg, &tmp);
2434
	if(errno != 0 or tmp == arg or *tmp != '\0'
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2435
	   or (retry_interval * 1000) > INT_MAX
2436
	   or retry_interval < 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2437
	  argp_error(state, "Bad retry interval");
2438
	}
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2439
	break;
237.16.4 by teddy at bsnet
* plugins.d/mandos-client.c (runnable_hook): Bug fix: stat using the
2440
      case 133:			/* --network-hook-dir */
2441
	hookdir = arg;
2442
	break;
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2443
	/*
2444
	 * These reproduce what we would get without ARGP_NO_HELP
2445
	 */
2446
      case '?':			/* --help */
2447
	argp_state_help(state, state->out_stream,
2448
			(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
2449
			& ~(unsigned int)ARGP_HELP_EXIT_OK);
2450
      case -3:			/* --usage */
2451
	argp_state_help(state, state->out_stream,
2452
			ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
2453
      case 'V':			/* --version */
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2454
	fprintf_plus(state->out_stream, "%s\n", argp_program_version);
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2455
	exit(argp_err_exit_status);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2456
	break;
2457
      default:
2458
	return ARGP_ERR_UNKNOWN;
2459
      }
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2460
      return errno;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2461
    }
2462
    
2463
    struct argp argp = { .options = options, .parser = parse_opt,
2464
			 .args_doc = "",
2465
			 .doc = "Mandos client -- Get and decrypt"
2466
			 " passwords from a Mandos server" };
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2467
    ret = argp_parse(&argp, argc, argv,
2468
		     ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2469
    switch(ret){
2470
    case 0:
2471
      break;
2472
    case ENOMEM:
2473
    default:
2474
      errno = ret;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2475
      perror_plus("argp_parse");
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2476
      exitcode = EX_OSERR;
2477
      goto end;
2478
    case EINVAL:
2479
      exitcode = EX_USAGE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2480
      goto end;
2481
    }
2482
  }
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
2483
  
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2484
  {
237.7.35 by Teddy Hogeborn
* initramfs-tools-script: Abort if plugin-runner is missing. Removed
2485
    /* Work around Debian bug #633582:
2486
       <http://bugs.debian.org/633582> */
2487
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2488
    /* Re-raise privileges */
2489
    ret_errno = raise_privileges();
2490
    if(ret_errno != 0){
2491
      errno = ret_errno;
2492
      perror_plus("Failed to raise privileges");
2493
    } else {
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2494
      struct stat st;
2495
      
2496
      if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
2497
	int seckey_fd = open(seckey, O_RDONLY);
2498
	if(seckey_fd == -1){
2499
	  perror_plus("open");
2500
	} else {
2501
	  ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
2502
	  if(ret == -1){
2503
	    perror_plus("fstat");
2504
	  } else {
2505
	    if(S_ISREG(st.st_mode)
2506
	       and st.st_uid == 0 and st.st_gid == 0){
2507
	      ret = fchown(seckey_fd, uid, gid);
2508
	      if(ret == -1){
2509
		perror_plus("fchown");
2510
	      }
2511
	    }
2512
	  }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2513
	  close(seckey_fd);
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2514
	}
2515
      }
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
2516
      
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2517
      if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
2518
	int pubkey_fd = open(pubkey, O_RDONLY);
2519
	if(pubkey_fd == -1){
2520
	  perror_plus("open");
2521
	} else {
2522
	  ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
2523
	  if(ret == -1){
2524
	    perror_plus("fstat");
2525
	  } else {
2526
	    if(S_ISREG(st.st_mode)
2527
	       and st.st_uid == 0 and st.st_gid == 0){
2528
	      ret = fchown(pubkey_fd, uid, gid);
2529
	      if(ret == -1){
2530
		perror_plus("fchown");
2531
	      }
2532
	    }
2533
	  }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2534
	  close(pubkey_fd);
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2535
	}
2536
      }
237.25.2 by Teddy Hogeborn
mandos-client: Try to start a plugin to add and remove a local route.
2537
      
237.7.324 by Teddy Hogeborn
mandos-client: Bug fix: don't crash if --dh-params was not used.
2538
      if(dh_params_file != NULL
2539
	 and strcmp(dh_params_file, PATHDIR "/dhparams.pem" ) == 0){
237.7.313 by Teddy Hogeborn
Install client Diffie-Hellman parameters into initramfs.
2540
	int dhparams_fd = open(dh_params_file, O_RDONLY);
2541
	if(dhparams_fd == -1){
2542
	  perror_plus("open");
2543
	} else {
2544
	  ret = (int)TEMP_FAILURE_RETRY(fstat(dhparams_fd, &st));
2545
	  if(ret == -1){
2546
	    perror_plus("fstat");
2547
	  } else {
2548
	    if(S_ISREG(st.st_mode)
2549
	       and st.st_uid == 0 and st.st_gid == 0){
2550
	      ret = fchown(dhparams_fd, uid, gid);
2551
	      if(ret == -1){
2552
		perror_plus("fchown");
2553
	      }
2554
	    }
2555
	  }
237.7.322 by Teddy Hogeborn
Don't use TEMP_FAILURE_RETRY around close().
2556
	  close(dhparams_fd);
237.7.313 by Teddy Hogeborn
Install client Diffie-Hellman parameters into initramfs.
2557
	}
2558
      }
2559
      
237.16.11 by Teddy Hogeborn
* Makefile (run-client): Add "--network-hook-dir" option.
2560
      /* Lower privileges */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2561
      ret_errno = lower_privileges();
2562
      if(ret_errno != 0){
2563
	errno = ret_errno;
2564
	perror_plus("Failed to lower privileges");
2565
      }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2566
    }
2567
  }
2568
  
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2569
  /* Remove invalid interface names (except "none") */
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2570
  {
2571
    char *interface = NULL;
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2572
    while((interface = argz_next(mc.interfaces, mc.interfaces_size,
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2573
				 interface))){
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2574
      if(strcmp(interface, "none") != 0
2575
	 and if_nametoindex(interface) == 0){
2576
	if(interface[0] != '\0'){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2577
	  fprintf_plus(stderr, "Not using nonexisting interface"
2578
		       " \"%s\"\n", interface);
2579
	}
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2580
	argz_delete(&mc.interfaces, &mc.interfaces_size, interface);
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2581
	interface = NULL;
2582
      }
2583
    }
2584
  }
2585
  
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2586
  /* Run network hooks */
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2587
  {
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2588
    if(mc.interfaces != NULL){
2589
      interfaces_hooks = malloc(mc.interfaces_size);
237.7.147 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Bug fix: Set DEVICE environment
2590
      if(interfaces_hooks == NULL){
2591
	perror_plus("malloc");
2592
	goto end;
2593
      }
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2594
      memcpy(interfaces_hooks, mc.interfaces, mc.interfaces_size);
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
2595
      argz_stringify(interfaces_hooks, mc.interfaces_size, (int)',');
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2596
    }
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2597
    run_network_hooks("start", interfaces_hooks != NULL ?
2598
		      interfaces_hooks : "", delay);
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2599
  }
2600
  
24.1.135 by Björn Påhlsson
Earlier signal handling
2601
  if(not debug){
2602
    avahi_set_log_function(empty_log);
2603
  }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2604
  
24.1.135 by Björn Påhlsson
Earlier signal handling
2605
  /* Initialize Avahi early so avahi_simple_poll_quit() can be called
2606
     from the signal handler */
2607
  /* Initialize the pseudo-RNG for Avahi */
2608
  srand((unsigned int) time(NULL));
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
2609
  simple_poll = avahi_simple_poll_new();
2610
  if(simple_poll == NULL){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2611
    fprintf_plus(stderr,
2612
		 "Avahi: Failed to create simple poll object.\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2613
    exitcode = EX_UNAVAILABLE;
24.1.135 by Björn Påhlsson
Earlier signal handling
2614
    goto end;
2615
  }
237.2.72 by Teddy Hogeborn
Merge from Björn:
2616
  
24.1.135 by Björn Påhlsson
Earlier signal handling
2617
  sigemptyset(&sigterm_action.sa_mask);
237.2.72 by Teddy Hogeborn
Merge from Björn:
2618
  ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
2619
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2620
    perror_plus("sigaddset");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2621
    exitcode = EX_OSERR;
237.2.72 by Teddy Hogeborn
Merge from Björn:
2622
    goto end;
2623
  }
2624
  ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
2625
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2626
    perror_plus("sigaddset");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2627
    exitcode = EX_OSERR;
237.2.72 by Teddy Hogeborn
Merge from Björn:
2628
    goto end;
2629
  }
24.1.135 by Björn Påhlsson
Earlier signal handling
2630
  ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
2631
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2632
    perror_plus("sigaddset");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2633
    exitcode = EX_OSERR;
24.1.135 by Björn Påhlsson
Earlier signal handling
2634
    goto end;
2635
  }
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2636
  /* Need to check if the handler is SIG_IGN before handling:
2637
     | [[info:libc:Initial Signal Actions]] |
2638
     | [[info:libc:Basic Signal Handling]]  |
2639
  */
2640
  ret = sigaction(SIGINT, NULL, &old_sigterm_action);
2641
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2642
    perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2643
    return EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2644
  }
2645
  if(old_sigterm_action.sa_handler != SIG_IGN){
2646
    ret = sigaction(SIGINT, &sigterm_action, NULL);
2647
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2648
      perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2649
      exitcode = EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2650
      goto end;
2651
    }
2652
  }
2653
  ret = sigaction(SIGHUP, NULL, &old_sigterm_action);
2654
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2655
    perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2656
    return EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2657
  }
2658
  if(old_sigterm_action.sa_handler != SIG_IGN){
2659
    ret = sigaction(SIGHUP, &sigterm_action, NULL);
2660
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2661
      perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2662
      exitcode = EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2663
      goto end;
2664
    }
2665
  }
2666
  ret = sigaction(SIGTERM, NULL, &old_sigterm_action);
2667
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2668
    perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2669
    return EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2670
  }
2671
  if(old_sigterm_action.sa_handler != SIG_IGN){
2672
    ret = sigaction(SIGTERM, &sigterm_action, NULL);
2673
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2674
      perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2675
      exitcode = EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2676
      goto end;
2677
    }
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
2678
  }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2679
  
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2680
  /* If no interfaces were specified, make a list */
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2681
  if(mc.interfaces == NULL){
237.7.247 by Teddy Hogeborn
Fix free() of possibly uninitialized pointer in mandos-client.
2682
    struct dirent **direntries = NULL;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2683
    /* Look for any good interfaces */
2684
    ret = scandir(sys_class_net, &direntries, good_interface,
2685
		  alphasort);
2686
    if(ret >= 1){
2687
      /* Add all found interfaces to interfaces list */
2688
      for(int i = 0; i < ret; ++i){
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2689
	ret_errno = argz_add(&mc.interfaces, &mc.interfaces_size,
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2690
			     direntries[i]->d_name);
2691
	if(ret_errno != 0){
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
2692
	  errno = ret_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2693
	  perror_plus("argz_add");
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2694
	  free(direntries[i]);
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2695
	  continue;
2696
	}
2697
	if(debug){
2698
	  fprintf_plus(stderr, "Will use interface \"%s\"\n",
2699
		       direntries[i]->d_name);
2700
	}
237.7.263 by Teddy Hogeborn
mandos-client: Bug Fix: Fix some memory leaks.
2701
	free(direntries[i]);
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2702
      }
2703
      free(direntries);
2704
    } else {
237.7.252 by Teddy Hogeborn
mandos-client: Fix some bugs on error conditions.
2705
      if(ret == 0){
2706
	free(direntries);
2707
      }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2708
      fprintf_plus(stderr, "Could not find a network interface\n");
2709
      exitcode = EXIT_FAILURE;
2710
      goto end;
2711
    }
2712
  }
2713
  
237.7.153 by Teddy Hogeborn
* plugins.d/mandos-client.c: Comment changes
2714
  /* Bring up interfaces which are down, and remove any "none"s */
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2715
  {
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2716
    char *interface = NULL;
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2717
    while((interface = argz_next(mc.interfaces, mc.interfaces_size,
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2718
				 interface))){
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2719
      /* If interface name is "none", stop bringing up interfaces.
2720
	 Also remove all instances of "none" from the list */
2721
      if(strcmp(interface, "none") == 0){
2722
	argz_delete(&mc.interfaces, &mc.interfaces_size,
2723
		    interface);
2724
	interface = NULL;
2725
	while((interface = argz_next(mc.interfaces,
2726
				     mc.interfaces_size, interface))){
2727
	  if(strcmp(interface, "none") == 0){
2728
	    argz_delete(&mc.interfaces, &mc.interfaces_size,
2729
			interface);
2730
	    interface = NULL;
2731
	  }
2732
	}
2733
	break;
2734
      }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2735
      bool interface_was_up = interface_is_up(interface);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2736
      errno = bring_up_interface(interface, delay);
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2737
      if(not interface_was_up){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2738
	if(errno != 0){
237.7.315 by Teddy Hogeborn
plugins.d/mandos-client.c (main): See why it failed to bring up interface.
2739
	  fprintf_plus(stderr, "Failed to bring up interface \"%s\":"
2740
		       " %s\n", interface, strerror(errno));
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2741
	} else {
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2742
	  errno = argz_add(&interfaces_to_take_down,
2743
			   &interfaces_to_take_down_size,
2744
			   interface);
2745
	  if(errno != 0){
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
2746
	    perror_plus("argz_add");
2747
	  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2748
	}
2749
      }
2750
    }
2751
    if(debug and (interfaces_to_take_down == NULL)){
2752
      fprintf_plus(stderr, "No interfaces were brought up\n");
237.2.128 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Bug fix: Check result of setgid().
2753
    }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2754
  }
2755
  
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2756
  /* If we only got one interface, explicitly use only that one */
2757
  if(argz_count(mc.interfaces, mc.interfaces_size) == 1){
2758
    if(debug){
2759
      fprintf_plus(stderr, "Using only interface \"%s\"\n",
2760
		   mc.interfaces);
2761
    }
2762
    if_index = (AvahiIfIndex)if_nametoindex(mc.interfaces);
2763
  }
2764
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2765
  if(quit_now){
2766
    goto end;
2767
  }
2768
  
237.7.310 by Teddy Hogeborn
mandos-client: Add --dh-params FILE option.
2769
  ret = init_gnutls_global(pubkey, seckey, dh_params_file, &mc);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2770
  if(ret == -1){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2771
    fprintf_plus(stderr, "init_gnutls_global failed\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2772
    exitcode = EX_UNAVAILABLE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2773
    goto end;
2774
  } else {
2775
    gnutls_initialized = true;
2776
  }
2777
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2778
  if(quit_now){
2779
    goto end;
2780
  }
2781
  
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
2782
  /* Try /run/tmp before /tmp */
2783
  tempdir = mkdtemp(run_tempdir);
2784
  if(tempdir == NULL and errno == ENOENT){
2785
      if(debug){
2786
	fprintf_plus(stderr, "Tempdir %s did not work, trying %s\n",
2787
		     run_tempdir, old_tempdir);
2788
      }
2789
      tempdir = mkdtemp(old_tempdir);
2790
  }
2791
  if(tempdir == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2792
    perror_plus("mkdtemp");
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2793
    goto end;
2794
  }
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2795
  
2796
  if(quit_now){
2797
    goto end;
2798
  }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2799
  
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2800
  if(not init_gpgme(pubkey, seckey, tempdir, &mc)){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2801
    fprintf_plus(stderr, "init_gpgme failed\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2802
    exitcode = EX_UNAVAILABLE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2803
    goto end;
2804
  } else {
2805
    gpgme_initialized = true;
2806
  }
2807
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2808
  if(quit_now){
2809
    goto end;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2810
  }
2811
  
2812
  if(connect_to != NULL){
2813
    /* Connect directly, do not use Zeroconf */
2814
    /* (Mainly meant for debugging) */
2815
    char *address = strrchr(connect_to, ':');
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2816
    
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2817
    if(address == NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2818
      fprintf_plus(stderr, "No colon in address\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2819
      exitcode = EX_USAGE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2820
      goto end;
2821
    }
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2822
    
2823
    if(quit_now){
2824
      goto end;
2825
    }
2826
    
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
2827
    in_port_t port;
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2828
    errno = 0;
2829
    tmpmax = strtoimax(address+1, &tmp, 10);
2830
    if(errno != 0 or tmp == address+1 or *tmp != '\0'
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
2831
       or tmpmax != (in_port_t)tmpmax){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2832
      fprintf_plus(stderr, "Bad port number\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2833
      exitcode = EX_USAGE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2834
      goto end;
2835
    }
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2836
    
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2837
    if(quit_now){
2838
      goto end;
2839
    }
2840
    
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
2841
    port = (in_port_t)tmpmax;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2842
    *address = '\0';
237.2.67 by Teddy Hogeborn
Four new interrelated features:
2843
    /* Colon in address indicates IPv6 */
2844
    int af;
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2845
    if(strchr(connect_to, ':') != NULL){
237.2.67 by Teddy Hogeborn
Four new interrelated features:
2846
      af = AF_INET6;
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2847
      /* Accept [] around IPv6 address - see RFC 5952 */
2848
      if(connect_to[0] == '[' and address[-1] == ']')
2849
	{
2850
	  connect_to++;
2851
	  address[-1] = '\0';
2852
	}
237.2.67 by Teddy Hogeborn
Four new interrelated features:
2853
    } else {
2854
      af = AF_INET;
2855
    }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2856
    address = connect_to;
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2857
    
2858
    if(quit_now){
2859
      goto end;
2860
    }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2861
    
24.1.163 by Björn Påhlsson
mandos-client: Added never ending loop for --connect
2862
    while(not quit_now){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2863
      ret = start_mandos_communication(address, port, if_index, af,
2864
				       &mc);
24.1.163 by Björn Påhlsson
mandos-client: Added never ending loop for --connect
2865
      if(quit_now or ret == 0){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2866
	break;
2867
      }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2868
      if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2869
	fprintf_plus(stderr, "Retrying in %d seconds\n",
2870
		     (int)retry_interval);
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2871
      }
237.7.168 by Teddy Hogeborn
* plugin-runner.c (main): Bug fix; do not ignore return value of
2872
      sleep((unsigned int)retry_interval);
237.7.40 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not even try to work around
2873
    }
2874
    
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
2875
    if(not quit_now){
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2876
      exitcode = EXIT_SUCCESS;
2877
    }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2878
    
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2879
    goto end;
2880
  }
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2881
  
2882
  if(quit_now){
2883
    goto end;
2884
  }
2885
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2886
  {
2887
    AvahiServerConfig config;
2888
    /* Do not publish any local Zeroconf records */
2889
    avahi_server_config_init(&config);
2890
    config.publish_hinfo = 0;
2891
    config.publish_addresses = 0;
2892
    config.publish_workstation = 0;
2893
    config.publish_domain = 0;
2894
    
2895
    /* Allocate a new server */
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
2896
    mc.server = avahi_server_new(avahi_simple_poll_get(simple_poll),
2897
				 &config, NULL, NULL, &ret_errno);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2898
    
2899
    /* Free the Avahi configuration data */
2900
    avahi_server_config_free(&config);
2901
  }
2902
  
2903
  /* Check if creating the Avahi server object succeeded */
2904
  if(mc.server == NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2905
    fprintf_plus(stderr, "Failed to create Avahi server: %s\n",
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2906
		 avahi_strerror(ret_errno));
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2907
    exitcode = EX_UNAVAILABLE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2908
    goto end;
2909
  }
2910
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2911
  if(quit_now){
2912
    goto end;
2913
  }
2914
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2915
  /* Create the Avahi service browser */
2916
  sb = avahi_s_service_browser_new(mc.server, if_index,
237.2.76 by Teddy Hogeborn
* plugins.d/mandos-client.c (browse_callback, main): Do not require
2917
				   AVAHI_PROTO_UNSPEC, "_mandos._tcp",
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2918
				   NULL, 0, browse_callback,
2919
				   (void *)&mc);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2920
  if(sb == NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2921
    fprintf_plus(stderr, "Failed to create service browser: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2922
		 avahi_strerror(avahi_server_errno(mc.server)));
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2923
    exitcode = EX_UNAVAILABLE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2924
    goto end;
2925
  }
237.2.70 by Teddy Hogeborn
Merge from Björn:
2926
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2927
  if(quit_now){
2928
    goto end;
2929
  }
2930
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2931
  /* Run the main loop */
2932
  
2933
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2934
    fprintf_plus(stderr, "Starting Avahi loop search\n");
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2935
  }
237.7.235 by Teddy Hogeborn
White space fix only.
2936
  
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
2937
  ret = avahi_loop_with_timeout(simple_poll,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2938
				(int)(retry_interval * 1000), &mc);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2939
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2940
    fprintf_plus(stderr, "avahi_loop_with_timeout exited %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2941
		 (ret == 0) ? "successfully" : "with error");
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2942
  }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2943
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
2944
 end:
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2945
  
2946
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2947
    fprintf_plus(stderr, "%s exiting\n", argv[0]);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2948
  }
2949
  
2950
  /* Cleanup things */
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2951
  free(mc.interfaces);
2952
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2953
  if(sb != NULL)
2954
    avahi_s_service_browser_free(sb);
2955
  
2956
  if(mc.server != NULL)
2957
    avahi_server_free(mc.server);
2958
  
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
2959
  if(simple_poll != NULL)
2960
    avahi_simple_poll_free(simple_poll);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2961
  
2962
  if(gnutls_initialized){
2963
    gnutls_certificate_free_credentials(mc.cred);
2964
    gnutls_dh_params_deinit(mc.dh_params);
2965
  }
2966
  
2967
  if(gpgme_initialized){
2968
    gpgme_release(mc.ctx);
2969
  }
237.16.12 by Teddy Hogeborn
* plugins.d/mandos-client.c (runnable_hook): Add debug output.
2970
  
237.7.33 by Teddy Hogeborn
Merge from Björn.
2971
  /* Cleans up the circular linked list of Mandos servers the client
2972
     has seen */
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2973
  if(mc.current_server != NULL){
2974
    mc.current_server->prev->next = NULL;
2975
    while(mc.current_server != NULL){
2976
      server *next = mc.current_server->next;
237.7.262 by Teddy Hogeborn
mandos-client: Fix mem free bug.
2977
#ifdef __GNUC__
2978
#pragma GCC diagnostic push
2979
#pragma GCC diagnostic ignored "-Wcast-qual"
2980
#endif
2981
      free((char *)(mc.current_server->ip));
2982
#ifdef __GNUC__
2983
#pragma GCC diagnostic pop
2984
#endif
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2985
      free(mc.current_server);
2986
      mc.current_server = next;
2987
    }
2988
  }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2989
  
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2990
  /* Re-raise privileges */
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
2991
  {
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2992
    ret_errno = raise_privileges();
2993
    if(ret_errno != 0){
237.7.254 by Teddy Hogeborn
mandos-client: Better error messages.
2994
      errno = ret_errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2995
      perror_plus("Failed to raise privileges");
2996
    } else {
2997
      
2998
      /* Run network hooks */
2999
      run_network_hooks("stop", interfaces_hooks != NULL ?
3000
			interfaces_hooks : "", delay);
3001
      
3002
      /* Take down the network interfaces which were brought up */
3003
      {
3004
	char *interface = NULL;
3005
	while((interface=argz_next(interfaces_to_take_down,
3006
				   interfaces_to_take_down_size,
3007
				   interface))){
3008
	  ret_errno = take_down_interface(interface);
3009
	  if(ret_errno != 0){
3010
	    errno = ret_errno;
3011
	    perror_plus("Failed to take down interface");
3012
	  }
3013
	}
3014
	if(debug and (interfaces_to_take_down == NULL)){
3015
	  fprintf_plus(stderr, "No interfaces needed to be taken"
3016
		       " down\n");
3017
	}
3018
      }
3019
    }
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
3020
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
3021
    ret_errno = lower_privileges_permanently();
3022
    if(ret_errno != 0){
237.7.254 by Teddy Hogeborn
mandos-client: Better error messages.
3023
      errno = ret_errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
3024
      perror_plus("Failed to lower privileges permanently");
3025
    }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
3026
  }
3027
  
3028
  free(interfaces_to_take_down);
3029
  free(interfaces_hooks);
237.2.113 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Take down network interface on
3030
  
237.7.361 by Teddy Hogeborn
Client: Remove new key directory introduced in GnuPG 2.1
3031
  void clean_dir_at(int base, const char * const dirname,
3032
		    uintmax_t level){
3033
    struct dirent **direntries = NULL;
3034
    int dret;
3035
    int dir_fd = (int)TEMP_FAILURE_RETRY(openat(base, dirname,
3036
						O_RDONLY
3037
						| O_NOFOLLOW
3038
						| O_DIRECTORY
3039
						| O_PATH));
3040
    if(dir_fd == -1){
3041
      perror_plus("open");
3042
    }
3043
    int numentries = scandirat(dir_fd, ".", &direntries,
3044
			       notdotentries, alphasort);
3045
    if(numentries >= 0){
3046
      for(int i = 0; i < numentries; i++){
3047
	if(debug){
3048
	  fprintf_plus(stderr, "Unlinking \"%s/%s\"\n",
3049
		       dirname, direntries[i]->d_name);
3050
	}
3051
	dret = unlinkat(dir_fd, direntries[i]->d_name, 0);
3052
	if(dret == -1){
3053
	  if(errno == EISDIR){
3054
	      dret = unlinkat(dir_fd, direntries[i]->d_name,
3055
			      AT_REMOVEDIR);
3056
	  }	    
3057
	  if((dret == -1) and (errno == ENOTEMPTY)
3058
	     and (strcmp(direntries[i]->d_name, "private-keys-v1.d")
3059
		  == 0) and (level == 0)){
3060
	    /* Recurse only in this special case */
3061
	    clean_dir_at(dir_fd, direntries[i]->d_name, level+1);
3062
	    dret = 0;
3063
	  }
3064
	  if(dret == -1){
3065
	    fprintf_plus(stderr, "unlink(\"%s/%s\"): %s\n", dirname,
3066
			 direntries[i]->d_name, strerror(errno));
3067
	  }
3068
	}
3069
	free(direntries[i]);
3070
      }
3071
      
3072
      /* need to clean even if 0 because man page doesn't specify */
3073
      free(direntries);
3074
      if(numentries == -1){
3075
	perror_plus("scandirat");
3076
      }
3077
      dret = unlinkat(base, dirname, AT_REMOVEDIR);
3078
      if(dret == -1 and errno != ENOENT){
3079
	perror_plus("rmdir");
3080
      }
3081
    } else {
3082
      perror_plus("scandirat");
3083
    }
3084
    close(dir_fd);
3085
  }
3086
  
24.1.172 by Björn Påhlsson
using scandir instead of readdir
3087
  /* Removes the GPGME temp directory and all files inside */
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
3088
  if(tempdir != NULL){
237.7.361 by Teddy Hogeborn
Client: Remove new key directory introduced in GnuPG 2.1
3089
    clean_dir_at(-1, tempdir, 0);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3090
  }
3091
  
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
3092
  if(quit_now){
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
3093
    sigemptyset(&old_sigterm_action.sa_mask);
3094
    old_sigterm_action.sa_handler = SIG_DFL;
237.2.137 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Try harder to raise signal on
3095
    ret = (int)TEMP_FAILURE_RETRY(sigaction(signal_received,
3096
					    &old_sigterm_action,
3097
					    NULL));
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
3098
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
3099
      perror_plus("sigaction");
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
3100
    }
237.2.137 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Try harder to raise signal on
3101
    do {
3102
      ret = raise(signal_received);
3103
    } while(ret != 0 and errno == EINTR);
3104
    if(ret != 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
3105
      perror_plus("raise");
237.2.137 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Try harder to raise signal on
3106
      abort();
3107
    }
3108
    TEMP_FAILURE_RETRY(pause());
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
3109
  }
3110
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
3111
  return exitcode;
13 by Björn Påhlsson
Added following support:
3112
}