/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
237.7.227 by Teddy Hogeborn
Update copyright year.
12
 * Copyright © 2008-2014 Teddy Hogeborn
13
 * Copyright © 2008-2014 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 */
24.1.29 by Björn Påhlsson
Added more header file comments
49
#include <string.h>		/* memset(), strcmp(), strlen(),
76 by Teddy Hogeborn
* plugins.d/password-request.c (init_gnutls_global): Renamed
50
				   strerror(), asprintf(), strcpy() */
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() */
237.7.242 by Teddy Hogeborn
Make mandos-client use unlinkat() instead of remove().
60
#include <fcntl.h>		/* open(), unlinkat() */
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() */
237.7.33 by Teddy Hogeborn
Merge from Björn.
65
#include <errno.h>		/* perror(), errno,
66
				   program_invocation_short_name */
24.1.163 by Björn Påhlsson
mandos-client: Added never ending loop for --connect
67
#include <time.h>		/* nanosleep(), time(), sleep() */
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
68
#include <net/if.h>		/* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
24.1.26 by Björn Påhlsson
tally count of used symbols
69
				   SIOCSIFFLAGS, if_indextoname(),
70
				   if_nametoindex(), IF_NAMESIZE */
237.2.67 by Teddy Hogeborn
Four new interrelated features:
71
#include <netinet/in.h>		/* IN6_IS_ADDR_LINKLOCAL,
72
				   INET_ADDRSTRLEN, INET6_ADDRSTRLEN
73
				*/
24.1.29 by Björn Påhlsson
Added more header file comments
74
#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().
75
				   getuid(), getgid(), seteuid(),
237.7.242 by Teddy Hogeborn
Make mandos-client use unlinkat() instead of remove().
76
				   setgid(), pause(), _exit(),
77
				   unlinkat() */
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
78
#include <arpa/inet.h>		/* inet_pton(), htons() */
237.2.67 by Teddy Hogeborn
Four new interrelated features:
79
#include <iso646.h>		/* not, or, and */
24.1.29 by Björn Påhlsson
Added more header file comments
80
#include <argp.h>		/* struct argp_option, error_t, struct
81
				   argp_state, struct argp,
82
				   argp_parse(), ARGP_KEY_ARG,
83
				   ARGP_KEY_END, ARGP_ERR_UNKNOWN */
237.2.70 by Teddy Hogeborn
Merge from Björn:
84
#include <signal.h>		/* sigemptyset(), sigaddset(),
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
85
				   sigaction(), SIGTERM, sig_atomic_t,
86
				   raise() */
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
87
#include <sysexits.h>		/* EX_OSERR, EX_USAGE, EX_UNAVAILABLE,
88
				   EX_NOHOST, EX_IOERR, EX_PROTOCOL */
237.16.3 by teddy at bsnet
* plugins.d/mandos-client.c: Prefix all printouts with "Mandos plugin
89
#include <sys/wait.h>		/* waitpid(), WIFEXITED(),
90
				   WEXITSTATUS(), WTERMSIG() */
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
91
#include <grp.h>		/* setgroups() */
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
92
#include <argz.h>		/* argz_add_sep(), argz_next(),
93
				   argz_delete(), argz_append(),
94
				   argz_stringify(), argz_add(),
95
				   argz_count() */
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
96
#include <netdb.h>		/* getnameinfo(), NI_NUMERICHOST,
97
				   EAI_SYSTEM, gai_strerror() */
237.2.70 by Teddy Hogeborn
Merge from Björn:
98
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
99
#ifdef __linux__
24.1.124 by Björn Påhlsson
Added lower kernel loglevel to reduce clutter on system console.
100
#include <sys/klog.h> 		/* klogctl() */
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
101
#endif	/* __linux__ */
24.1.26 by Björn Påhlsson
tally count of used symbols
102
103
/* Avahi */
24.1.29 by Björn Påhlsson
Added more header file comments
104
/* All Avahi types, constants and functions
105
 Avahi*, avahi_*,
106
 AVAHI_* */
107
#include <avahi-core/core.h>
24.1.26 by Björn Påhlsson
tally count of used symbols
108
#include <avahi-core/lookup.h>
24.1.29 by Björn Påhlsson
Added more header file comments
109
#include <avahi-core/log.h>
24.1.26 by Björn Påhlsson
tally count of used symbols
110
#include <avahi-common/simple-watch.h>
111
#include <avahi-common/malloc.h>
112
#include <avahi-common/error.h>
113
114
/* GnuTLS */
76 by Teddy Hogeborn
* plugins.d/password-request.c (init_gnutls_global): Renamed
115
#include <gnutls/gnutls.h>	/* All GnuTLS types, constants and
116
				   functions:
24.1.29 by Björn Påhlsson
Added more header file comments
117
				   gnutls_*
24.1.26 by Björn Påhlsson
tally count of used symbols
118
				   init_gnutls_session(),
24.1.29 by Björn Påhlsson
Added more header file comments
119
				   GNUTLS_* */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
120
#include <gnutls/openpgp.h>
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
121
			 /* gnutls_certificate_set_openpgp_key_file(),
122
			    GNUTLS_OPENPGP_FMT_BASE64 */
24.1.26 by Björn Påhlsson
tally count of used symbols
123
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
124
/* GPGME */
76 by Teddy Hogeborn
* plugins.d/password-request.c (init_gnutls_global): Renamed
125
#include <gpgme.h> 		/* All GPGME types, constants and
126
				   functions:
24.1.29 by Björn Påhlsson
Added more header file comments
127
				   gpgme_*
24.1.26 by Björn Påhlsson
tally count of used symbols
128
				   GPGME_PROTOCOL_OpenPGP,
24.1.29 by Björn Påhlsson
Added more header file comments
129
				   GPG_ERR_NO_* */
13 by Björn Påhlsson
Added following support:
130
131
#define BUFFER_SIZE 256
37 by Teddy Hogeborn
Non-tested commit for merge purposes.
132
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
133
#define PATHDIR "/conf/conf.d/mandos"
134
#define SECKEY "seckey.txt"
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
135
#define PUBKEY "pubkey.txt"
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
136
#define HOOKDIR "/lib/mandos/network-hooks.d"
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
137
15.1.2 by Björn Påhlsson
Added debug options from passprompt as --debug and --debug=passprompt
138
bool debug = false;
43 by Teddy Hogeborn
* plugins.d/mandosclient.c: Cosmetic changes.
139
static const char mandos_protocol_version[] = "1";
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
140
const char *argp_program_version = "mandos-client " VERSION;
141
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
142
static const char sys_class_net[] = "/sys/class/net";
143
char *connect_to = NULL;
237.16.4 by teddy at bsnet
* plugins.d/mandos-client.c (runnable_hook): Bug fix: stat using the
144
const char *hookdir = HOOKDIR;
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
145
int hookdir_fd = -1;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
146
uid_t uid = 65534;
147
gid_t gid = 65534;
24.1.10 by Björn Påhlsson
merge commit
148
237.7.33 by Teddy Hogeborn
Merge from Björn.
149
/* 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.
150
typedef struct server{
151
  const char *ip;
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
152
  in_port_t port;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
153
  AvahiIfIndex if_index;
154
  int af;
155
  struct timespec last_seen;
156
  struct server *next;
157
  struct server *prev;
158
} server;
159
42 by Teddy Hogeborn
* plugins.d/mandosclient.c (start_mandos_communication): Change "to"
160
/* Used for passing in values through the Avahi callback functions */
13 by Björn Påhlsson
Added following support:
161
typedef struct {
24.1.9 by Björn Påhlsson
not working midwork...
162
  AvahiServer *server;
13 by Björn Påhlsson
Added following support:
163
  gnutls_certificate_credentials_t cred;
24.1.9 by Björn Påhlsson
not working midwork...
164
  unsigned int dh_bits;
24.1.13 by Björn Påhlsson
mandosclient
165
  gnutls_dh_params_t dh_params;
24.1.9 by Björn Påhlsson
not working midwork...
166
  const char *priority;
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
167
  gpgme_ctx_t ctx;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
168
  server *current_server;
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
169
  char *interfaces;
170
  size_t interfaces_size;
24.1.9 by Björn Påhlsson
not working midwork...
171
} mandos_context;
13 by Björn Påhlsson
Added following support:
172
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
173
/* global so signal handler can reach it*/
174
AvahiSimplePoll *simple_poll;
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
175
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
176
sig_atomic_t quit_now = 0;
177
int signal_received = 0;
178
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
179
/* Function to use when printing errors */
180
void perror_plus(const char *print_text){
237.7.82 by teddy at bsnet
* plugin-runner.c (add_to_char_array): Added "nonnull" attribute.
181
  int e = errno;
237.7.33 by Teddy Hogeborn
Merge from Björn.
182
  fprintf(stderr, "Mandos plugin %s: ",
183
	  program_invocation_short_name);
237.7.82 by teddy at bsnet
* plugin-runner.c (add_to_char_array): Added "nonnull" attribute.
184
  errno = e;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
185
  perror(print_text);
186
}
187
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
188
__attribute__((format (gnu_printf, 2, 3), nonnull))
237.15.4 by Björn Påhlsson
New convinence error printer: fprintf_plus
189
int fprintf_plus(FILE *stream, const char *format, ...){
190
  va_list ap;
191
  va_start (ap, format);
192
  
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
193
  TEMP_FAILURE_RETRY(fprintf(stream, "Mandos plugin %s: ",
194
			     program_invocation_short_name));
237.7.170 by Teddy Hogeborn
* debian/control (Build-Depends): Depend on debhelper 8.9.7 for using
195
  return (int)TEMP_FAILURE_RETRY(vfprintf(stream, format, ap));
237.15.4 by Björn Påhlsson
New convinence error printer: fprintf_plus
196
}
197
43 by Teddy Hogeborn
* plugins.d/mandosclient.c: Cosmetic changes.
198
/*
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
199
 * Make additional room in "buffer" for at least BUFFER_SIZE more
200
 * bytes. "buffer_capacity" is how much is currently allocated,
201
 * "buffer_length" is how much is already used.
43 by Teddy Hogeborn
* plugins.d/mandosclient.c: Cosmetic changes.
202
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
203
__attribute__((nonnull, warn_unused_result))
24.1.132 by Björn Påhlsson
Fixed a bug in fallback handling
204
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.
205
		 size_t buffer_capacity){
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
206
  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.
207
    char *new_buf = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
208
    if(new_buf == NULL){
209
      int old_errno = errno;
210
      free(*buffer);
211
      errno = old_errno;
212
      *buffer = NULL;
24.1.10 by Björn Påhlsson
merge commit
213
      return 0;
214
    }
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
215
    *buffer = new_buf;
24.1.10 by Björn Påhlsson
merge commit
216
    buffer_capacity += BUFFER_SIZE;
217
  }
218
  return buffer_capacity;
219
}
220
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
221
/* 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.
222
__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
223
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()".
224
		int af, server **current_server){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
225
  int ret;
226
  server *new_server = malloc(sizeof(server));
227
  if(new_server == NULL){
228
    perror_plus("malloc");
237.11.27 by teddy at bsnet
* plugins.d/mandos-client.c (add_server): Return bool; all callers
229
    return false;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
230
  }
231
  *new_server = (server){ .ip = strdup(ip),
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
232
			  .port = port,
233
			  .if_index = if_index,
234
			  .af = af };
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
235
  if(new_server->ip == NULL){
236
    perror_plus("strdup");
237.11.27 by teddy at bsnet
* plugins.d/mandos-client.c (add_server): Return bool; all callers
237
    return false;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
238
  }
237.7.216 by Teddy Hogeborn
Do not add a new server to server list if clock_gettime() fails
239
  ret = clock_gettime(CLOCK_MONOTONIC, &(new_server->last_seen));
240
  if(ret == -1){
241
    perror_plus("clock_gettime");
242
    return false;
243
  }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
244
  /* Special case of first server */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
245
  if(*current_server == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
246
    new_server->next = new_server;
247
    new_server->prev = new_server;
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
248
    *current_server = new_server;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
249
  } else {
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
250
    /* Place the new server last in the list */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
251
    new_server->next = *current_server;
252
    new_server->prev = (*current_server)->prev;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
253
    new_server->prev->next = new_server;
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
254
    (*current_server)->prev = new_server;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
255
  }
237.11.27 by teddy at bsnet
* plugins.d/mandos-client.c (add_server): Return bool; all callers
256
  return true;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
257
}
258
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
259
/* 
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
260
 * Initialize GPGME.
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
261
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
262
__attribute__((nonnull, warn_unused_result))
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
263
static bool init_gpgme(const char * const seckey,
264
		       const char * const pubkey,
265
		       const char * const tempdir,
266
		       mandos_context *mc){
13 by Björn Påhlsson
Added following support:
267
  gpgme_error_t rc;
268
  gpgme_engine_info_t engine_info;
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
269
  
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
270
  /*
237.2.51 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Use separate bool variable instead
271
   * 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.
272
   */
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
273
  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
274
    int ret;
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
275
    int fd;
276
    gpgme_data_t pgp_data;
277
    
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
278
    fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
279
    if(fd == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
280
      perror_plus("open");
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
281
      return false;
282
    }
283
    
284
    rc = gpgme_data_new_from_fd(&pgp_data, fd);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
285
    if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
286
      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.
287
		   gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
288
      return false;
289
    }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
290
    
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
291
    rc = gpgme_op_import(mc->ctx, pgp_data);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
292
    if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
293
      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.
294
		   gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
295
      return false;
296
    }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
297
    
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
298
    ret = (int)TEMP_FAILURE_RETRY(close(fd));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
299
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
300
      perror_plus("close");
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
301
    }
302
    gpgme_data_release(pgp_data);
303
    return true;
304
  }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
305
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
306
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
307
    fprintf_plus(stderr, "Initializing GPGME\n");
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
308
  }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
309
  
13 by Björn Påhlsson
Added following support:
310
  /* Init GPGME */
311
  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.
312
  rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
313
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
314
    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.
315
		 gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
316
    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.
317
  }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
318
  
237.7.40 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not even try to work around
319
  /* Set GPGME home directory for the OpenPGP engine only */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
320
  rc = gpgme_get_engine_info(&engine_info);
321
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
322
    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.
323
		 gpgme_strsource(rc), gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
324
    return false;
13 by Björn Påhlsson
Added following support:
325
  }
326
  while(engine_info != NULL){
327
    if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
328
      gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
329
			    engine_info->file_name, tempdir);
13 by Björn Påhlsson
Added following support:
330
      break;
331
    }
332
    engine_info = engine_info->next;
333
  }
334
  if(engine_info == NULL){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
335
    fprintf_plus(stderr, "Could not set GPGME home dir to %s\n",
336
		 tempdir);
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
337
    return false;
338
  }
168 by Teddy Hogeborn
* initramfs-tools-hook: Use long options where available. Use only
339
  
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
340
  /* Create new GPGME "context" */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
341
  rc = gpgme_new(&(mc->ctx));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
342
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
343
    fprintf_plus(stderr, "Mandos plugin mandos-client: "
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
344
		 "bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
345
		 gpgme_strerror(rc));
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
346
    return false;
347
  }
348
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
349
  if(not import_key(pubkey) or not import_key(seckey)){
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
350
    return false;
351
  }
352
  
237.2.118 by Teddy Hogeborn
* mandos: White-space fixes only.
353
  return true;
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
354
}
355
356
/* 
357
 * Decrypt OpenPGP data.
358
 * Returns -1 on error
359
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
360
__attribute__((nonnull, warn_unused_result))
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
361
static ssize_t pgp_packet_decrypt(const char *cryptotext,
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
362
				  size_t crypto_size,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
363
				  char **plaintext,
364
				  mandos_context *mc){
24.1.81 by Björn Påhlsson
removed keyring pre-requirement for starting password-request.
365
  gpgme_data_t dh_crypto, dh_plain;
366
  gpgme_error_t rc;
367
  ssize_t ret;
368
  size_t plaintext_capacity = 0;
369
  ssize_t plaintext_length = 0;
370
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
371
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
372
    fprintf_plus(stderr, "Trying to decrypt OpenPGP data\n");
13 by Björn Påhlsson
Added following support:
373
  }
374
  
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
375
  /* Create new GPGME data buffer from memory cryptotext */
376
  rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
377
			       0);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
378
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
379
    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.
380
		 gpgme_strsource(rc), gpgme_strerror(rc));
13 by Björn Påhlsson
Added following support:
381
    return -1;
382
  }
383
  
384
  /* Create new empty GPGME data buffer for the plaintext */
385
  rc = gpgme_data_new(&dh_plain);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
386
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
387
    fprintf_plus(stderr, "Mandos plugin mandos-client: "
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
388
		 "bad gpgme_data_new: %s: %s\n",
389
		 gpgme_strsource(rc), gpgme_strerror(rc));
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
390
    gpgme_data_release(dh_crypto);
13 by Björn Påhlsson
Added following support:
391
    return -1;
392
  }
393
  
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
394
  /* Decrypt data from the cryptotext data buffer to the plaintext
395
     data buffer */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
396
  rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
397
  if(rc != GPG_ERR_NO_ERROR){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
398
    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.
399
		 gpgme_strsource(rc), gpgme_strerror(rc));
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
400
    plaintext_length = -1;
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
401
    if(debug){
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
402
      gpgme_decrypt_result_t result;
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
403
      result = gpgme_op_decrypt_result(mc->ctx);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
404
      if(result == NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
405
	fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
406
      } else {
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
407
	fprintf_plus(stderr, "Unsupported algorithm: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
408
		     result->unsupported_algorithm);
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
409
	fprintf_plus(stderr, "Wrong key usage: %u\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
410
		     result->wrong_key_usage);
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
411
	if(result->file_name != NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
412
	  fprintf_plus(stderr, "File name: %s\n", result->file_name);
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
413
	}
414
	gpgme_recipient_t recipient;
415
	recipient = result->recipients;
237.2.112 by Teddy Hogeborn
* plugins.d/mandos-client.c (pgp_packet_decrypt): Remove redundant
416
	while(recipient != NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
417
	  fprintf_plus(stderr, "Public key algorithm: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
418
		       gpgme_pubkey_algo_name
419
		       (recipient->pubkey_algo));
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
420
	  fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);
421
	  fprintf_plus(stderr, "Secret key available: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
422
		       recipient->status == GPG_ERR_NO_SECKEY
423
		       ? "No" : "Yes");
237.2.112 by Teddy Hogeborn
* plugins.d/mandos-client.c (pgp_packet_decrypt): Remove redundant
424
	  recipient = recipient->next;
99 by Teddy Hogeborn
* mandos (fingerprint): Bug fix: Check crtverify.value, not crtverify.
425
	}
426
      }
427
    }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
428
    goto decrypt_end;
13 by Björn Påhlsson
Added following support:
429
  }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
430
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
431
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
432
    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
433
  }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
434
  
13 by Björn Påhlsson
Added following support:
435
  /* Seek back to the beginning of the GPGME plaintext data buffer */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
436
  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.
437
    perror_plus("gpgme_data_seek");
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
438
    plaintext_length = -1;
439
    goto decrypt_end;
24.1.5 by Björn Påhlsson
plugbasedclient:
440
  }
441
  
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
442
  *plaintext = NULL;
13 by Björn Påhlsson
Added following support:
443
  while(true){
24.1.132 by Björn Påhlsson
Fixed a bug in fallback handling
444
    plaintext_capacity = incbuffer(plaintext,
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
445
				   (size_t)plaintext_length,
446
				   plaintext_capacity);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
447
    if(plaintext_capacity == 0){
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
448
      perror_plus("incbuffer");
449
      plaintext_length = -1;
450
      goto decrypt_end;
13 by Björn Påhlsson
Added following support:
451
    }
452
    
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
453
    ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
454
			  BUFFER_SIZE);
13 by Björn Påhlsson
Added following support:
455
    /* Print the data, if any */
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
456
    if(ret == 0){
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
457
      /* EOF */
13 by Björn Påhlsson
Added following support:
458
      break;
459
    }
460
    if(ret < 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
461
      perror_plus("gpgme_data_read");
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
462
      plaintext_length = -1;
463
      goto decrypt_end;
13 by Björn Påhlsson
Added following support:
464
    }
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
465
    plaintext_length += ret;
13 by Björn Påhlsson
Added following support:
466
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
467
  
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
468
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
469
    fprintf_plus(stderr, "Decrypted password is: ");
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
470
    for(ssize_t i = 0; i < plaintext_length; i++){
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
471
      fprintf(stderr, "%02hhX ", (*plaintext)[i]);
472
    }
473
    fprintf(stderr, "\n");
474
  }
475
  
476
 decrypt_end:
477
  
478
  /* Delete the GPGME cryptotext data buffer */
479
  gpgme_data_release(dh_crypto);
15.1.3 by Björn Påhlsson
Added getopt_long support for mandosclient and passprompt
480
  
481
  /* Delete the GPGME plaintext data buffer */
13 by Björn Påhlsson
Added following support:
482
  gpgme_data_release(dh_plain);
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
483
  return plaintext_length;
13 by Björn Påhlsson
Added following support:
484
}
485
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
486
__attribute__((warn_unused_result))
487
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
488
  const char *ret = gnutls_strerror(value);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
489
  if(ret == NULL)
13 by Björn Påhlsson
Added following support:
490
    ret = "(unknown)";
491
  return ret;
492
}
493
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
494
/* GnuTLS log function callback */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
495
__attribute__((nonnull))
36 by Teddy Hogeborn
* TODO: Converted to org-mode style
496
static void debuggnutls(__attribute__((unused)) int level,
497
			const char* string){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
498
  fprintf_plus(stderr, "GnuTLS: %s", string);
13 by Björn Påhlsson
Added following support:
499
}
500
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
501
__attribute__((nonnull, warn_unused_result))
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
502
static int init_gnutls_global(const char *pubkeyfilename,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
503
			      const char *seckeyfilename,
504
			      mandos_context *mc){
13 by Björn Påhlsson
Added following support:
505
  int ret;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
506
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
507
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
508
    fprintf_plus(stderr, "Initializing GnuTLS\n");
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
509
  }
24.1.29 by Björn Påhlsson
Added more header file comments
510
  
511
  ret = gnutls_global_init();
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
512
  if(ret != GNUTLS_E_SUCCESS){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
513
    fprintf_plus(stderr, "GnuTLS global_init: %s\n",
514
		 safer_gnutls_strerror(ret));
13 by Björn Påhlsson
Added following support:
515
    return -1;
516
  }
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
517
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
518
  if(debug){
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
519
    /* "Use a log level over 10 to enable all debugging options."
520
     * - GnuTLS manual
521
     */
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
522
    gnutls_global_set_log_level(11);
523
    gnutls_global_set_log_function(debuggnutls);
524
  }
525
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
526
  /* OpenPGP credentials */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
527
  ret = gnutls_certificate_allocate_credentials(&mc->cred);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
528
  if(ret != GNUTLS_E_SUCCESS){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
529
    fprintf_plus(stderr, "GnuTLS memory error: %s\n",
530
		 safer_gnutls_strerror(ret));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
531
    gnutls_global_deinit();
13 by Björn Påhlsson
Added following support:
532
    return -1;
533
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
534
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
535
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
536
    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.
537
		 " secret key %s as GnuTLS credentials\n",
538
		 pubkeyfilename,
539
		 seckeyfilename);
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
540
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
541
  
13 by Björn Påhlsson
Added following support:
542
  ret = gnutls_certificate_set_openpgp_key_file
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
543
    (mc->cred, pubkeyfilename, seckeyfilename,
76 by Teddy Hogeborn
* plugins.d/password-request.c (init_gnutls_global): Renamed
544
     GNUTLS_OPENPGP_FMT_BASE64);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
545
  if(ret != GNUTLS_E_SUCCESS){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
546
    fprintf_plus(stderr,
547
		 "Error[%d] while reading the OpenPGP key pair ('%s',"
548
		 " '%s')\n", ret, pubkeyfilename, seckeyfilename);
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
549
    fprintf_plus(stderr, "The GnuTLS error is: %s\n",
550
		 safer_gnutls_strerror(ret));
24.1.20 by Björn Påhlsson
mandosclient
551
    goto globalfail;
13 by Björn Påhlsson
Added following support:
552
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
553
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
554
  /* GnuTLS server initialization */
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
555
  ret = gnutls_dh_params_init(&mc->dh_params);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
556
  if(ret != GNUTLS_E_SUCCESS){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
557
    fprintf_plus(stderr, "Error in GnuTLS DH parameter"
558
		 " initialization: %s\n",
559
		 safer_gnutls_strerror(ret));
24.1.20 by Björn Påhlsson
mandosclient
560
    goto globalfail;
13 by Björn Påhlsson
Added following support:
561
  }
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
562
  ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
563
  if(ret != GNUTLS_E_SUCCESS){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
564
    fprintf_plus(stderr, "Error in GnuTLS prime generation: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
565
		 safer_gnutls_strerror(ret));
24.1.20 by Björn Påhlsson
mandosclient
566
    goto globalfail;
13 by Björn Påhlsson
Added following support:
567
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
568
  
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
569
  gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
570
  
24.1.13 by Björn Påhlsson
mandosclient
571
  return 0;
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
572
  
24.1.20 by Björn Påhlsson
mandosclient
573
 globalfail:
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
574
  
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
575
  gnutls_certificate_free_credentials(mc->cred);
24.1.26 by Björn Påhlsson
tally count of used symbols
576
  gnutls_global_deinit();
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
577
  gnutls_dh_params_deinit(mc->dh_params);
24.1.20 by Björn Påhlsson
mandosclient
578
  return -1;
24.1.13 by Björn Påhlsson
mandosclient
579
}
580
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
581
__attribute__((nonnull, warn_unused_result))
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
582
static int init_gnutls_session(gnutls_session_t *session,
583
			       mandos_context *mc){
24.1.13 by Björn Påhlsson
mandosclient
584
  int ret;
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
585
  /* GnuTLS session creation */
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
586
  do {
587
    ret = gnutls_init(session, GNUTLS_SERVER);
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
588
    if(quit_now){
589
      return -1;
590
    }
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
591
  } while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
592
  if(ret != GNUTLS_E_SUCCESS){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
593
    fprintf_plus(stderr,
594
		 "Error in GnuTLS session initialization: %s\n",
595
		 safer_gnutls_strerror(ret));
13 by Björn Påhlsson
Added following support:
596
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
597
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
598
  {
599
    const char *err;
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
600
    do {
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
601
      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
602
      if(quit_now){
603
	gnutls_deinit(*session);
604
	return -1;
605
      }
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
606
    } while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
607
    if(ret != GNUTLS_E_SUCCESS){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
608
      fprintf_plus(stderr, "Syntax error at: %s\n", err);
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
609
      fprintf_plus(stderr, "GnuTLS error: %s\n",
610
		   safer_gnutls_strerror(ret));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
611
      gnutls_deinit(*session);
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
612
      return -1;
613
    }
13 by Björn Påhlsson
Added following support:
614
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
615
  
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
616
  do {
617
    ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
618
				 mc->cred);
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
619
    if(quit_now){
620
      gnutls_deinit(*session);
621
      return -1;
622
    }
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
623
  } while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
624
  if(ret != GNUTLS_E_SUCCESS){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
625
    fprintf_plus(stderr, "Error setting GnuTLS credentials: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
626
		 safer_gnutls_strerror(ret));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
627
    gnutls_deinit(*session);
13 by Björn Påhlsson
Added following support:
628
    return -1;
629
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
630
  
13 by Björn Påhlsson
Added following support:
631
  /* ignore client certificate if any. */
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
632
  gnutls_certificate_server_set_request(*session, GNUTLS_CERT_IGNORE);
13 by Björn Påhlsson
Added following support:
633
  
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
634
  gnutls_dh_set_prime_bits(*session, mc->dh_bits);
13 by Björn Påhlsson
Added following support:
635
  
636
  return 0;
637
}
638
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
639
/* Avahi log function callback */
36 by Teddy Hogeborn
* TODO: Converted to org-mode style
640
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
641
		      __attribute__((unused)) const char *txt){}
13 by Björn Påhlsson
Added following support:
642
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
643
/* Called when a Mandos server is found */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
644
__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
645
static int start_mandos_communication(const char *ip, in_port_t port,
24.1.9 by Björn Påhlsson
not working midwork...
646
				      AvahiIfIndex if_index,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
647
				      int af, mandos_context *mc){
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
648
  int ret, tcp_sd = -1;
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
649
  ssize_t sret;
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
650
  struct sockaddr_storage to;
13 by Björn Påhlsson
Added following support:
651
  char *buffer = NULL;
237.2.135 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
652
  char *decrypted_buffer = NULL;
13 by Björn Påhlsson
Added following support:
653
  size_t buffer_length = 0;
654
  size_t buffer_capacity = 0;
24.1.10 by Björn Påhlsson
merge commit
655
  size_t written;
237.2.135 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
656
  int retval = -1;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
657
  gnutls_session_t session;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
658
  int pf;			/* Protocol family */
659
  
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
660
  errno = 0;
661
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
662
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
663
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
664
    return -1;
665
  }
666
  
237.2.67 by Teddy Hogeborn
Four new interrelated features:
667
  switch(af){
668
  case AF_INET6:
669
    pf = PF_INET6;
670
    break;
671
  case AF_INET:
672
    pf = PF_INET;
673
    break;
674
  default:
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
675
    fprintf_plus(stderr, "Bad address family: %d\n", af);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
676
    errno = EINVAL;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
677
    return -1;
678
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
679
  
237.7.153 by Teddy Hogeborn
* plugins.d/mandos-client.c: Comment changes
680
  /* 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
681
  if(if_index != AVAHI_IF_UNSPEC and mc->interfaces != NULL){
682
    /* Check if the interface is one of the interfaces we are using */
683
    bool match = false;
684
    {
685
      char *interface = NULL;
686
      while((interface=argz_next(mc->interfaces, mc->interfaces_size,
687
				 interface))){
688
	if(if_nametoindex(interface) == (unsigned int)if_index){
689
	  match = true;
690
	  break;
691
	}
692
      }
693
    }
694
    if(not match){
237.7.153 by Teddy Hogeborn
* plugins.d/mandos-client.c: Comment changes
695
      /* This interface does not match any in the list, so we don't
696
	 connect to the server */
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
697
      if(debug){
698
	char interface[IF_NAMESIZE];
699
	if(if_indextoname((unsigned int)if_index, interface) == NULL){
700
	  perror_plus("if_indextoname");
701
	} else {
702
	  fprintf_plus(stderr, "Skipping server on non-used interface"
703
		       " \"%s\"\n",
704
		       if_indextoname((unsigned int)if_index,
705
				      interface));
706
	}
707
      }
708
      return -1;
709
    }
710
  }
711
  
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
712
  ret = init_gnutls_session(&session, mc);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
713
  if(ret != 0){
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
714
    return -1;
715
  }
716
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
717
  if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
718
    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
719
		 PRIuMAX "\n", ip, (uintmax_t)port);
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
720
  }
13 by Björn Påhlsson
Added following support:
721
  
237.2.67 by Teddy Hogeborn
Four new interrelated features:
722
  tcp_sd = socket(pf, SOCK_STREAM, 0);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
723
  if(tcp_sd < 0){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
724
    int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
725
    perror_plus("socket");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
726
    errno = e;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
727
    goto mandos_end;
728
  }
729
  
730
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
731
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
732
    goto mandos_end;
13 by Björn Påhlsson
Added following support:
733
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
734
  
84 by Teddy Hogeborn
* Makefile (DOCBOOKTOMAN): Use the local manpages/docbook.xsl file, do
735
  memset(&to, 0, sizeof(to));
237.2.67 by Teddy Hogeborn
Four new interrelated features:
736
  if(af == AF_INET6){
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
737
    ((struct sockaddr_in6 *)&to)->sin6_family = (sa_family_t)af;
738
    ret = inet_pton(af, ip, &((struct sockaddr_in6 *)&to)->sin6_addr);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
739
  } else {			/* IPv4 */
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
740
    ((struct sockaddr_in *)&to)->sin_family = (sa_family_t)af;
741
    ret = inet_pton(af, ip, &((struct sockaddr_in *)&to)->sin_addr);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
742
  }
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
743
  if(ret < 0 ){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
744
    int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
745
    perror_plus("inet_pton");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
746
    errno = e;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
747
    goto mandos_end;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
748
  }
13 by Björn Påhlsson
Added following support:
749
  if(ret == 0){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
750
    int e = errno;
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
751
    fprintf_plus(stderr, "Bad address: %s\n", ip);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
752
    errno = e;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
753
    goto mandos_end;
13 by Björn Påhlsson
Added following support:
754
  }
237.2.67 by Teddy Hogeborn
Four new interrelated features:
755
  if(af == AF_INET6){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
756
    ((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.
757
    if(IN6_IS_ADDR_LINKLOCAL
758
       (&((struct sockaddr_in6 *)&to)->sin6_addr)){
237.2.67 by Teddy Hogeborn
Four new interrelated features:
759
      if(if_index == AVAHI_IF_UNSPEC){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
760
	fprintf_plus(stderr, "An IPv6 link-local address is"
761
		     " incomplete without a network interface\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
762
	errno = EINVAL;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
763
	goto mandos_end;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
764
      }
765
      /* Set the network interface number as scope */
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
766
      ((struct sockaddr_in6 *)&to)->sin6_scope_id = (uint32_t)if_index;
237.2.67 by Teddy Hogeborn
Four new interrelated features:
767
    }
768
  } else {
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
769
    ((struct sockaddr_in *)&to)->sin_port = htons(port);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
770
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
771
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
772
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
773
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
774
    goto mandos_end;
775
  }
776
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
777
  if(debug){
237.2.67 by Teddy Hogeborn
Four new interrelated features:
778
    if(af == AF_INET6 and if_index != AVAHI_IF_UNSPEC){
779
      char interface[IF_NAMESIZE];
780
      if(if_indextoname((unsigned int)if_index, interface) == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
781
	perror_plus("if_indextoname");
237.2.67 by Teddy Hogeborn
Four new interrelated features:
782
      } else {
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
783
	fprintf_plus(stderr, "Connection to: %s%%%s, port %" PRIuMAX
784
		     "\n", ip, interface, (uintmax_t)port);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
785
      }
786
    } else {
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
787
      fprintf_plus(stderr, "Connection to: %s, port %" PRIuMAX "\n",
788
		   ip, (uintmax_t)port);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
789
    }
790
    char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
791
		 INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
792
    if(af == AF_INET6){
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
793
      ret = getnameinfo((struct sockaddr *)&to,
794
			sizeof(struct sockaddr_in6),
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
795
			addrstr, sizeof(addrstr), NULL, 0,
796
			NI_NUMERICHOST);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
797
    } else {
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
798
      ret = getnameinfo((struct sockaddr *)&to,
799
			sizeof(struct sockaddr_in),
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
800
			addrstr, sizeof(addrstr), NULL, 0,
801
			NI_NUMERICHOST);
237.2.67 by Teddy Hogeborn
Four new interrelated features:
802
    }
237.7.215 by Teddy Hogeborn
Use getnameinfo() instead of inet_ntop() in mandos-client.
803
    if(ret == EAI_SYSTEM){
804
      perror_plus("getnameinfo");
805
    } else if(ret != 0) {
806
      fprintf_plus(stderr, "getnameinfo: %s", gai_strerror(ret));
807
    } else if(strcmp(addrstr, ip) != 0){
808
      fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
37 by Teddy Hogeborn
Non-tested commit for merge purposes.
809
    }
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
810
  }
13 by Björn Påhlsson
Added following support:
811
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
812
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
813
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
814
    goto mandos_end;
815
  }
816
  
237.2.67 by Teddy Hogeborn
Four new interrelated features:
817
  if(af == AF_INET6){
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
818
    ret = connect(tcp_sd, (struct sockaddr *)&to,
819
		  sizeof(struct sockaddr_in6));
237.2.67 by Teddy Hogeborn
Four new interrelated features:
820
  } else {
237.7.217 by Teddy Hogeborn
Use "struct sockaddr_storage" instead of a union in mandos-client.
821
    ret = connect(tcp_sd, (struct sockaddr *)&to, /* IPv4 */
822
		  sizeof(struct sockaddr_in));
237.2.67 by Teddy Hogeborn
Four new interrelated features:
823
  }
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
824
  if(ret < 0){
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
825
    if((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
24.1.163 by Björn Påhlsson
mandos-client: Added never ending loop for --connect
826
      int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
827
      perror_plus("connect");
24.1.163 by Björn Påhlsson
mandos-client: Added never ending loop for --connect
828
      errno = e;
829
    }
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
830
    goto mandos_end;
831
  }
832
  
833
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
834
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
835
    goto mandos_end;
13 by Björn Påhlsson
Added following support:
836
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
837
  
24.1.12 by Björn Påhlsson
merge +
838
  const char *out = mandos_protocol_version;
24.1.10 by Björn Påhlsson
merge commit
839
  written = 0;
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
840
  while(true){
24.1.10 by Björn Påhlsson
merge commit
841
    size_t out_size = strlen(out);
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
842
    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.
843
					out_size - written));
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
844
    if(ret == -1){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
845
      int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
846
      perror_plus("write");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
847
      errno = e;
24.1.12 by Björn Påhlsson
merge +
848
      goto mandos_end;
24.1.10 by Björn Påhlsson
merge commit
849
    }
24.1.12 by Björn Påhlsson
merge +
850
    written += (size_t)ret;
24.1.10 by Björn Påhlsson
merge commit
851
    if(written < out_size){
852
      continue;
853
    } else {
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
854
      if(out == mandos_protocol_version){
24.1.10 by Björn Påhlsson
merge commit
855
	written = 0;
856
	out = "\r\n";
857
      } else {
858
	break;
859
      }
860
    }
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
861
  
862
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
863
      errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
864
      goto mandos_end;
865
    }
24.1.10 by Björn Påhlsson
merge commit
866
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
867
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
868
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
869
    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
870
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
871
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
872
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
873
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
874
    goto mandos_end;
875
  }
876
  
237.7.136 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Eliminate
877
  /* This casting via intptr_t is to eliminate warning about casting
878
     an int to a pointer type.  This is exactly how the GnuTLS Guile
879
     function "set-session-transport-fd!" does it. */
880
  gnutls_transport_set_ptr(session,
881
			   (gnutls_transport_ptr_t)(intptr_t)tcp_sd);
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
882
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
883
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
884
    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
885
    goto mandos_end;
886
  }
887
  
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
888
  do {
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
889
    ret = gnutls_handshake(session);
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
890
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
891
      errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
892
      goto mandos_end;
893
    }
24.1.29 by Björn Påhlsson
Added more header file comments
894
  } while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
13 by Björn Påhlsson
Added following support:
895
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
896
  if(ret != GNUTLS_E_SUCCESS){
25 by Teddy Hogeborn
* mandos-clients.conf ([DEFAULT]): New section.
897
    if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
898
      fprintf_plus(stderr, "*** GnuTLS Handshake failed ***\n");
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
899
      gnutls_perror(ret);
25 by Teddy Hogeborn
* mandos-clients.conf ([DEFAULT]): New section.
900
    }
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
901
    errno = EPROTO;
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
902
    goto mandos_end;
13 by Björn Påhlsson
Added following support:
903
  }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
904
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
905
  /* Read OpenPGP packet that contains the wanted password */
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
906
  
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
907
  if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
908
    fprintf_plus(stderr, "Retrieving OpenPGP encrypted password from"
909
		 " %s\n", ip);
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
910
  }
143 by Teddy Hogeborn
* Makefile (mandos.8): Add dependency on "overview.xml" and
911
  
13 by Björn Påhlsson
Added following support:
912
  while(true){
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
913
    
914
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
915
      errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
916
      goto mandos_end;
917
    }
918
    
24.1.132 by Björn Påhlsson
Fixed a bug in fallback handling
919
    buffer_capacity = incbuffer(&buffer, buffer_length,
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
920
				buffer_capacity);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
921
    if(buffer_capacity == 0){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
922
      int e = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
923
      perror_plus("incbuffer");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
924
      errno = e;
24.1.12 by Björn Påhlsson
merge +
925
      goto mandos_end;
13 by Björn Påhlsson
Added following support:
926
    }
927
    
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
928
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
929
      errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
930
      goto mandos_end;
931
    }
932
    
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
933
    sret = gnutls_record_recv(session, buffer+buffer_length,
934
			      BUFFER_SIZE);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
935
    if(sret == 0){
13 by Björn Påhlsson
Added following support:
936
      break;
937
    }
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
938
    if(sret < 0){
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
939
      switch(sret){
13 by Björn Påhlsson
Added following support:
940
      case GNUTLS_E_INTERRUPTED:
941
      case GNUTLS_E_AGAIN:
942
	break;
943
      case GNUTLS_E_REHANDSHAKE:
237.2.126 by Teddy Hogeborn
* plugin-runner.c: Minor stylistic changes.
944
	do {
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
945
	  ret = gnutls_handshake(session);
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
946
	  
947
	  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
948
	    errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
949
	    goto mandos_end;
950
	  }
24.1.29 by Björn Påhlsson
Added more header file comments
951
	} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
952
	if(ret < 0){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
953
	  fprintf_plus(stderr, "*** GnuTLS Re-handshake failed "
954
		       "***\n");
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
955
	  gnutls_perror(ret);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
956
	  errno = EPROTO;
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
957
	  goto mandos_end;
13 by Björn Påhlsson
Added following support:
958
	}
959
	break;
960
      default:
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
961
	fprintf_plus(stderr, "Unknown error while reading data from"
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
962
		     " encrypted session with Mandos server\n");
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
963
	gnutls_bye(session, GNUTLS_SHUT_RDWR);
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
964
	errno = EIO;
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
965
	goto mandos_end;
13 by Björn Påhlsson
Added following support:
966
      }
967
    } else {
237.3.2 by Mooie
Fixed warnings in the 64 bit build. Added explicit cast to int for
968
      buffer_length += (size_t) sret;
13 by Björn Påhlsson
Added following support:
969
    }
970
  }
15.1.1 by Björn Påhlsson
Added debugg support in form off --debug and --debug=mandosclient
971
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
972
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
973
    fprintf_plus(stderr, "Closing TLS session\n");
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
974
  }
975
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
976
  if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
977
    errno = EINTR;
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
978
    goto mandos_end;
979
  }
980
  
981
  do {
982
    ret = gnutls_bye(session, GNUTLS_SHUT_RDWR);
983
    if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
984
      errno = EINTR;
237.2.134 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Always fail and
985
      goto mandos_end;
986
    }
987
  } 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
988
  
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
989
  if(buffer_length > 0){
237.2.125 by Teddy Hogeborn
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
990
    ssize_t decrypted_buffer_size;
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
991
    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()".
992
					       &decrypted_buffer, mc);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
993
    if(decrypted_buffer_size >= 0){
237.2.124 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gpgme): Move variable "ret" into the
994
      
24.1.10 by Björn Påhlsson
merge commit
995
      written = 0;
28 by Teddy Hogeborn
* server.conf: New file.
996
      while(written < (size_t) decrypted_buffer_size){
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
997
	if(quit_now){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
998
	  errno = EINTR;
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
999
	  goto mandos_end;
1000
	}
1001
	
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1002
	ret = (int)fwrite(decrypted_buffer + written, 1,
1003
			  (size_t)decrypted_buffer_size - written,
1004
			  stdout);
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1005
	if(ret == 0 and ferror(stdout)){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1006
	  int e = errno;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1007
	  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1008
	    fprintf_plus(stderr, "Error writing encrypted data: %s\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1009
			 strerror(errno));
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1010
	  }
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1011
	  errno = e;
237.2.135 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
1012
	  goto mandos_end;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1013
	}
22 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Cast "0" argument to
1014
	written += (size_t)ret;
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1015
      }
237.2.135 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
1016
      retval = 0;
13 by Björn Påhlsson
Added following support:
1017
    }
1018
  }
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1019
  
1020
  /* Shutdown procedure */
1021
  
1022
 mandos_end:
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1023
  {
1024
    int e = errno;
1025
    free(decrypted_buffer);
1026
    free(buffer);
1027
    if(tcp_sd >= 0){
1028
      ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
1029
    }
1030
    if(ret == -1){
1031
      if(e == 0){
1032
	e = errno;
1033
      }
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1034
      perror_plus("close");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1035
    }
1036
    gnutls_deinit(session);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1037
    errno = e;
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1038
    if(quit_now){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1039
      errno = EINTR;
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
1040
      retval = -1;
1041
    }
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1042
  }
13 by Björn Påhlsson
Added following support:
1043
  return retval;
1044
}
1045
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1046
__attribute__((nonnull))
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
1047
static void resolve_callback(AvahiSServiceResolver *r,
1048
			     AvahiIfIndex interface,
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1049
			     AvahiProtocol proto,
39 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
1050
			     AvahiResolverEvent event,
1051
			     const char *name,
1052
			     const char *type,
1053
			     const char *domain,
1054
			     const char *host_name,
1055
			     const AvahiAddress *address,
1056
			     uint16_t port,
1057
			     AVAHI_GCC_UNUSED AvahiStringList *txt,
1058
			     AVAHI_GCC_UNUSED AvahiLookupResultFlags
1059
			     flags,
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1060
			     void *mc){
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1061
  if(r == NULL){
1062
    return;
1063
  }
22 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Cast "0" argument to
1064
  
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1065
  /* Called whenever a service has been resolved successfully or
1066
     timed out */
22 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Cast "0" argument to
1067
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
1068
  if(quit_now){
1069
    return;
1070
  }
1071
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1072
  switch(event){
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1073
  default:
1074
  case AVAHI_RESOLVER_FAILURE:
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1075
    fprintf_plus(stderr, "(Avahi Resolver) Failed to resolve service "
1076
		 "'%s' of type '%s' in domain '%s': %s\n", name, type,
1077
		 domain,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1078
		 avahi_strerror(avahi_server_errno
1079
				(((mandos_context*)mc)->server)));
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1080
    break;
22 by Teddy Hogeborn
* plugins.d/mandosclient.c (pgp_packet_decrypt): Cast "0" argument to
1081
    
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1082
  case AVAHI_RESOLVER_FOUND:
1083
    {
1084
      char ip[AVAHI_ADDRESS_STR_MAX];
1085
      avahi_address_snprint(ip, sizeof(ip), address);
1086
      if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1087
	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.
1088
		     PRIdMAX ") on port %" PRIu16 "\n", name,
1089
		     host_name, ip, (intmax_t)interface, port);
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1090
      }
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1091
      int ret = start_mandos_communication(ip, (in_port_t)port,
1092
					   interface,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1093
					   avahi_proto_to_af(proto),
1094
					   mc);
237.2.29 by Teddy Hogeborn
* plugin-runner.c: Only space changes.
1095
      if(ret == 0){
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
1096
	avahi_simple_poll_quit(simple_poll);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1097
      } else {
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1098
	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()".
1099
			  avahi_proto_to_af(proto),
1100
			  &((mandos_context*)mc)->current_server)){
237.11.27 by teddy at bsnet
* plugins.d/mandos-client.c (add_server): Return bool; all callers
1101
	  fprintf_plus(stderr, "Failed to add server \"%s\" to server"
1102
		       " list\n", name);
1103
	}
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1104
      }
13 by Björn Påhlsson
Added following support:
1105
    }
21 by Teddy Hogeborn
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
1106
  }
1107
  avahi_s_service_resolver_free(r);
13 by Björn Påhlsson
Added following support:
1108
}
1109
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1110
static void browse_callback(AvahiSServiceBrowser *b,
1111
			    AvahiIfIndex interface,
1112
			    AvahiProtocol protocol,
1113
			    AvahiBrowserEvent event,
1114
			    const char *name,
1115
			    const char *type,
1116
			    const char *domain,
1117
			    AVAHI_GCC_UNUSED AvahiLookupResultFlags
1118
			    flags,
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1119
			    void *mc){
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
1120
  if(b == NULL){
1121
    return;
1122
  }
24.1.9 by Björn Påhlsson
not working midwork...
1123
  
1124
  /* Called whenever a new services becomes available on the LAN or
1125
     is removed from the LAN */
1126
  
237.2.121 by Teddy Hogeborn
* plugins.d/mandos-client.c (start_mandos_communication): Check
1127
  if(quit_now){
1128
    return;
1129
  }
1130
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1131
  switch(event){
24.1.9 by Björn Påhlsson
not working midwork...
1132
  default:
1133
  case AVAHI_BROWSER_FAILURE:
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1134
    
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1135
    fprintf_plus(stderr, "(Avahi browser) %s\n",
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1136
		 avahi_strerror(avahi_server_errno
1137
				(((mandos_context*)mc)->server)));
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
1138
    avahi_simple_poll_quit(simple_poll);
24.1.9 by Björn Påhlsson
not working midwork...
1139
    return;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1140
    
24.1.9 by Björn Påhlsson
not working midwork...
1141
  case AVAHI_BROWSER_NEW:
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1142
    /* We ignore the returned Avahi resolver object. In the callback
1143
       function we free it. If the Avahi server is terminated before
1144
       the callback function is called the Avahi server will free the
1145
       resolver for us. */
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1146
    
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1147
    if(avahi_s_service_resolver_new(((mandos_context*)mc)->server,
1148
				    interface, protocol, name, type,
1149
				    domain, protocol, 0,
1150
				    resolve_callback, mc) == NULL)
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1151
      fprintf_plus(stderr, "Avahi: Failed to resolve service '%s':"
1152
		   " %s\n", name,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1153
		   avahi_strerror(avahi_server_errno
1154
				  (((mandos_context*)mc)->server)));
24.1.9 by Björn Påhlsson
not working midwork...
1155
    break;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1156
    
24.1.9 by Björn Påhlsson
not working midwork...
1157
  case AVAHI_BROWSER_REMOVE:
1158
    break;
38 by Teddy Hogeborn
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
1159
    
24.1.9 by Björn Påhlsson
not working midwork...
1160
  case AVAHI_BROWSER_ALL_FOR_NOW:
1161
  case AVAHI_BROWSER_CACHE_EXHAUSTED:
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1162
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1163
      fprintf_plus(stderr, "No Mandos server found, still"
1164
		   " searching...\n");
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1165
    }
24.1.9 by Björn Påhlsson
not working midwork...
1166
    break;
1167
  }
13 by Björn Påhlsson
Added following support:
1168
}
1169
237.7.33 by Teddy Hogeborn
Merge from Björn.
1170
/* Signal handler that stops main loop after SIGTERM */
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
1171
static void handle_sigterm(int sig){
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
1172
  if(quit_now){
1173
    return;
1174
  }
1175
  quit_now = 1;
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
1176
  signal_received = sig;
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
1177
  int old_errno = errno;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1178
  /* set main loop to exit */
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
1179
  if(simple_poll != NULL){
1180
    avahi_simple_poll_quit(simple_poll);
237.2.71 by Teddy Hogeborn
* plugin-runner.c: Comment change.
1181
  }
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
1182
  errno = old_errno;
1183
}
1184
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1185
__attribute__((nonnull, warn_unused_result))
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1186
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
1187
  int ret;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1188
  error_t ret_errno;
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1189
  
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1190
  int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1191
  if(s < 0){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1192
    ret_errno = errno;
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1193
    perror_plus("socket");
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1194
    errno = ret_errno;
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1195
    return false;
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1196
  }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1197
  strcpy(ifr->ifr_name, ifname);
1198
  ret = ioctl(s, SIOCGIFFLAGS, ifr);
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1199
  if(ret == -1){
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1200
    if(debug){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1201
      ret_errno = errno;
237.15.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1202
      perror_plus("ioctl SIOCGIFFLAGS");
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1203
      errno = ret_errno;
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1204
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1205
    return false;
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1206
  }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1207
  return true;
1208
}
1209
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1210
__attribute__((nonnull, warn_unused_result))
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1211
bool good_flags(const char *ifname, const struct ifreq *ifr){
1212
  
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1213
  /* Reject the loopback device */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1214
  if(ifr->ifr_flags & IFF_LOOPBACK){
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1215
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1216
      fprintf_plus(stderr, "Rejecting loopback interface \"%s\"\n",
1217
		   ifname);
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1218
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1219
    return false;
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1220
  }
1221
  /* 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
1222
  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.
1223
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1224
      fprintf_plus(stderr, "Accepting point-to-point interface"
1225
		   " \"%s\"\n", ifname);
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1226
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1227
    return true;
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1228
  }
1229
  /* Otherwise, reject non-broadcast-capable devices */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1230
  if(not (ifr->ifr_flags & IFF_BROADCAST)){
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1231
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1232
      fprintf_plus(stderr, "Rejecting non-broadcast interface"
1233
		   " \"%s\"\n", ifname);
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1234
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1235
    return false;
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1236
  }
237.7.29 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
1237
  /* Reject non-ARP interfaces (including dummy interfaces) */
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1238
  if(ifr->ifr_flags & IFF_NOARP){
237.7.29 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
1239
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1240
      fprintf_plus(stderr, "Rejecting non-ARP interface \"%s\"\n",
1241
		   ifname);
237.7.29 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
1242
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1243
    return false;
237.7.29 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Reject non-ARP
1244
  }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1245
  
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1246
  /* Accept this device */
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1247
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1248
    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
1249
  }
1250
  return true;
1251
}
1252
1253
/* 
1254
 * This function determines if a directory entry in /sys/class/net
1255
 * corresponds to an acceptable network device.
1256
 * (This function is passed to scandir(3) as a filter function.)
1257
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1258
__attribute__((nonnull, warn_unused_result))
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1259
int good_interface(const struct dirent *if_entry){
1260
  if(if_entry->d_name[0] == '.'){
1261
    return 0;
1262
  }
237.16.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Add error message.
1263
  
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1264
  struct ifreq ifr;
1265
  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.
1266
    if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1267
      fprintf_plus(stderr, "Failed to get flags for interface "
1268
		   "\"%s\"\n", if_entry->d_name);
237.16.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Add error message.
1269
    }
237.15.2 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Use SIOCGIFFLAGS instead
1270
    return 0;
1271
  }
1272
  
1273
  if(not good_flags(if_entry->d_name, &ifr)){
1274
    return 0;
269.1.2 by teddy at bsnet
* plugins.d/mandos-client.c: Added debug output.
1275
  }
269.1.1 by teddy at bsnet
* plugins.d/mandos-client.c: An empty interface name now means to
1276
  return 1;
1277
}
1278
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1279
/* 
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1280
 * This function determines if a network interface is up.
1281
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1282
__attribute__((nonnull, warn_unused_result))
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1283
bool interface_is_up(const char *interface){
1284
  struct ifreq ifr;
1285
  if(not get_flags(interface, &ifr)){
1286
    if(debug){
1287
      fprintf_plus(stderr, "Failed to get flags for interface "
1288
		   "\"%s\"\n", interface);
1289
    }
1290
    return false;
1291
  }
1292
  
1293
  return (bool)(ifr.ifr_flags & IFF_UP);
1294
}
1295
1296
/* 
1297
 * This function determines if a network interface is running
1298
 */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1299
__attribute__((nonnull, warn_unused_result))
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1300
bool interface_is_running(const char *interface){
1301
  struct ifreq ifr;
1302
  if(not get_flags(interface, &ifr)){
1303
    if(debug){
1304
      fprintf_plus(stderr, "Failed to get flags for interface "
1305
		   "\"%s\"\n", interface);
1306
    }
1307
    return false;
1308
  }
1309
  
1310
  return (bool)(ifr.ifr_flags & IFF_RUNNING);
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1311
}
1312
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1313
__attribute__((nonnull, pure, warn_unused_result))
24.1.172 by Björn Påhlsson
using scandir instead of readdir
1314
int notdotentries(const struct dirent *direntry){
1315
  /* Skip "." and ".." */
1316
  if(direntry->d_name[0] == '.'
1317
     and (direntry->d_name[1] == '\0'
1318
	  or (direntry->d_name[1] == '.'
1319
	      and direntry->d_name[2] == '\0'))){
1320
    return 0;
1321
  }
1322
  return 1;
1323
}
1324
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1325
/* Is this directory entry a runnable program? */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1326
__attribute__((nonnull, warn_unused_result))
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1327
int runnable_hook(const struct dirent *direntry){
1328
  int ret;
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1329
  size_t sret;
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1330
  struct stat st;
1331
  
1332
  if((direntry->d_name)[0] == '\0'){
1333
    /* Empty name? */
1334
    return 0;
1335
  }
1336
  
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1337
  sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1338
		"abcdefghijklmnopqrstuvwxyz"
1339
		"0123456789"
237.7.236 by Teddy Hogeborn
Minor bug fix in mandos-client: Allow periods in network hook names.
1340
		"_.-");
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1341
  if((direntry->d_name)[sret] != '\0'){
1342
    /* Contains non-allowed characters */
1343
    if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1344
      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.
1345
		   direntry->d_name);
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1346
    }
1347
    return 0;
1348
  }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1349
  
237.7.241 by Teddy Hogeborn
Make mandos-client use fstatat().
1350
  ret = fstatat(hookdir_fd, direntry->d_name, &st, 0);
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1351
  if(ret == -1){
1352
    if(debug){
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1353
      perror_plus("Could not stat hook");
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1354
    }
1355
    return 0;
1356
  }
237.16.1 by teddy at bsnet
* plugins.d/mandos-client.c (good_interface): Add error message.
1357
  if(not (S_ISREG(st.st_mode))){
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1358
    /* Not a regular file */
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1359
    if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1360
      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.
1361
		   direntry->d_name);
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1362
    }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1363
    return 0;
1364
  }
1365
  if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1366
    /* Not executable */
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1367
    if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
1368
      fprintf_plus(stderr, "Ignoring hook \"%s\" - not executable\n",
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1369
		   direntry->d_name);
237.16.6 by teddy at bsnet
* plugins.d/mandos-client.c: Some white space fixes.
1370
    }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1371
    return 0;
1372
  }
237.16.12 by Teddy Hogeborn
* plugins.d/mandos-client.c (runnable_hook): Add debug output.
1373
  if(debug){
1374
    fprintf_plus(stderr, "Hook \"%s\" is acceptable\n",
1375
		 direntry->d_name);
1376
  }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
1377
  return 1;
1378
}
1379
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1380
__attribute__((nonnull, warn_unused_result))
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1381
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval,
1382
			    mandos_context *mc){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1383
  int ret;
1384
  struct timespec now;
1385
  struct timespec waited_time;
1386
  intmax_t block_time;
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
1387
  
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1388
  while(true){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1389
    if(mc->current_server == NULL){
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
1390
      if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1391
	fprintf_plus(stderr, "Wait until first server is found."
1392
		     " No timeout!\n");
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1393
      }
1394
      ret = avahi_simple_poll_iterate(s, -1);
1395
    } else {
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
1396
      if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1397
	fprintf_plus(stderr, "Check current_server if we should run"
1398
		     " it, or wait\n");
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1399
      }
1400
      /* the current time */
1401
      ret = clock_gettime(CLOCK_MONOTONIC, &now);
1402
      if(ret == -1){
1403
	perror_plus("clock_gettime");
1404
	return -1;
1405
      }
1406
      /* Calculating in ms how long time between now and server
1407
	 who we visted longest time ago. Now - last seen.  */
237.7.33 by Teddy Hogeborn
Merge from Björn.
1408
      waited_time.tv_sec = (now.tv_sec
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1409
			    - mc->current_server->last_seen.tv_sec);
237.7.33 by Teddy Hogeborn
Merge from Björn.
1410
      waited_time.tv_nsec = (now.tv_nsec
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1411
			     - mc->current_server->last_seen.tv_nsec);
237.7.33 by Teddy Hogeborn
Merge from Björn.
1412
      /* total time is 10s/10,000ms.
1413
	 Converting to s from ms by dividing by 1,000,
1414
	 and ns to ms by dividing by 1,000,000. */
1415
      block_time = ((retry_interval
1416
		     - ((intmax_t)waited_time.tv_sec * 1000))
1417
		    - ((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.
1418
      
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
1419
      if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
1420
	fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1421
		     block_time);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1422
      }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
1423
      
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1424
      if(block_time <= 0){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1425
	ret = start_mandos_communication(mc->current_server->ip,
1426
					 mc->current_server->port,
1427
					 mc->current_server->if_index,
1428
					 mc->current_server->af, mc);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1429
	if(ret == 0){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1430
	  avahi_simple_poll_quit(s);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1431
	  return 0;
1432
	}
237.7.33 by Teddy Hogeborn
Merge from Björn.
1433
	ret = clock_gettime(CLOCK_MONOTONIC,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1434
			    &mc->current_server->last_seen);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1435
	if(ret == -1){
1436
	  perror_plus("clock_gettime");
1437
	  return -1;
1438
	}
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1439
	mc->current_server = mc->current_server->next;
237.7.33 by Teddy Hogeborn
Merge from Björn.
1440
	block_time = 0; 	/* Call avahi to find new Mandos
1441
				   servers, but don't block */
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1442
      }
1443
      
1444
      ret = avahi_simple_poll_iterate(s, (int)block_time);
1445
    }
1446
    if(ret != 0){
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
1447
      if(ret > 0 or errno != EINTR){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1448
	return (ret != 1) ? ret : 0;
1449
      }
1450
    }
1451
  }
1452
}
1453
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1454
/* Set effective uid to 0, return errno */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1455
__attribute__((warn_unused_result))
237.22.3 by Teddy Hogeborn
* plugins.d/mandos-client.c (raise_privileges,
1456
error_t raise_privileges(void){
1457
  error_t old_errno = errno;
1458
  error_t ret_errno = 0;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1459
  if(seteuid(0) == -1){
237.22.3 by Teddy Hogeborn
* plugins.d/mandos-client.c (raise_privileges,
1460
    ret_errno = errno;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1461
    perror_plus("seteuid");
1462
  }
1463
  errno = old_errno;
1464
  return ret_errno;
1465
}
1466
1467
/* Set effective and real user ID to 0.  Return errno. */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1468
__attribute__((warn_unused_result))
237.22.3 by Teddy Hogeborn
* plugins.d/mandos-client.c (raise_privileges,
1469
error_t raise_privileges_permanently(void){
1470
  error_t old_errno = errno;
1471
  error_t ret_errno = raise_privileges();
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1472
  if(ret_errno != 0){
1473
    errno = old_errno;
1474
    return ret_errno;
1475
  }
1476
  if(setuid(0) == -1){
237.22.3 by Teddy Hogeborn
* plugins.d/mandos-client.c (raise_privileges,
1477
    ret_errno = errno;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1478
    perror_plus("seteuid");
1479
  }
1480
  errno = old_errno;
1481
  return ret_errno;
1482
}
1483
1484
/* Set effective user ID to unprivileged saved user ID */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1485
__attribute__((warn_unused_result))
237.22.3 by Teddy Hogeborn
* plugins.d/mandos-client.c (raise_privileges,
1486
error_t lower_privileges(void){
1487
  error_t old_errno = errno;
1488
  error_t ret_errno = 0;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1489
  if(seteuid(uid) == -1){
237.22.3 by Teddy Hogeborn
* plugins.d/mandos-client.c (raise_privileges,
1490
    ret_errno = errno;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1491
    perror_plus("seteuid");
1492
  }
1493
  errno = old_errno;
1494
  return ret_errno;
1495
}
1496
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1497
/* Lower privileges permanently */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1498
__attribute__((warn_unused_result))
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1499
error_t lower_privileges_permanently(void){
1500
  error_t old_errno = errno;
1501
  error_t ret_errno = 0;
1502
  if(setuid(uid) == -1){
1503
    ret_errno = errno;
1504
    perror_plus("setuid");
1505
  }
1506
  errno = old_errno;
1507
  return ret_errno;
1508
}
1509
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1510
#ifndef O_CLOEXEC
1511
/*
1512
 * Based on the example in the GNU LibC manual chapter 13.13 "File
1513
 * Descriptor Flags".
1514
 | [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
1515
 */
1516
__attribute__((warn_unused_result))
1517
static int set_cloexec_flag(int fd){
1518
  int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
1519
  /* If reading the flags failed, return error indication now. */
1520
  if(ret < 0){
1521
    return ret;
1522
  }
1523
  /* Store modified flag word in the descriptor. */
1524
  return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
1525
				       ret | FD_CLOEXEC));
1526
}
1527
#endif	/* not O_CLOEXEC */
1528
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1529
__attribute__((nonnull))
1530
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.
1531
		       const float delay){
1532
  struct dirent **direntries;
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1533
  if(hookdir_fd == -1){
1534
    hookdir_fd = open(hookdir, O_RDONLY |
1535
#ifdef O_CLOEXEC
1536
		      O_CLOEXEC
1537
#else  /* not O_CLOEXEC */
1538
		      0
1539
#endif	/* not O_CLOEXEC */
1540
		      );
1541
    if(hookdir_fd == -1){
1542
      if(errno == ENOENT){
1543
	if(debug){
1544
	  fprintf_plus(stderr, "Network hook directory \"%s\" not"
1545
		       " found\n", hookdir);
1546
	}
1547
      } else {
1548
	perror_plus("open");
1549
      }
1550
      return;
1551
    }
1552
#ifndef O_CLOEXEC
1553
    if(set_cloexec_flag(hookdir_fd) < 0){
1554
      perror_plus("set_cloexec_flag");
1555
      if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
1556
	perror_plus("close");
1557
      } else {
1558
	hookdir_fd = -1;
1559
      }
1560
      return;
1561
    }
1562
#endif	/* not O_CLOEXEC */
1563
  }
1564
#ifdef __GLIBC__
1565
#if __GLIBC_PREREQ(2, 15)
1566
  int numhooks = scandirat(hookdir_fd, ".", &direntries,
1567
			   runnable_hook, alphasort);
1568
#else  /* not __GLIBC_PREREQ(2, 15) */
1569
  int numhooks = scandir(hookdir, &direntries, runnable_hook,
1570
			 alphasort);
1571
#endif	/* not __GLIBC_PREREQ(2, 15) */
1572
#else	/* not __GLIBC__ */
1573
  int numhooks = scandir(hookdir, &direntries, runnable_hook,
1574
			 alphasort);
1575
#endif	/* not __GLIBC__ */
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
1576
  if(numhooks == -1){
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1577
    perror_plus("scandir");
1578
    return;
1579
  }
1580
  struct dirent *direntry;
1581
  int ret;
1582
  int devnull = open("/dev/null", O_RDONLY);
1583
  for(int i = 0; i < numhooks; i++){
1584
    direntry = direntries[i];
1585
    if(debug){
1586
      fprintf_plus(stderr, "Running network hook \"%s\"\n",
1587
		   direntry->d_name);
1588
    }
1589
    pid_t hook_pid = fork();
1590
    if(hook_pid == 0){
1591
      /* Child */
1592
      /* Raise privileges */
1593
      if(raise_privileges_permanently() != 0){
1594
	perror_plus("Failed to raise privileges");
1595
	_exit(EX_NOPERM);
1596
      }
1597
      /* Set group */
1598
      errno = 0;
1599
      ret = setgid(0);
1600
      if(ret == -1){
1601
	perror_plus("setgid");
1602
	_exit(EX_NOPERM);
1603
      }
1604
      /* Reset supplementary groups */
1605
      errno = 0;
1606
      ret = setgroups(0, NULL);
1607
      if(ret == -1){
1608
	perror_plus("setgroups");
1609
	_exit(EX_NOPERM);
1610
      }
1611
      ret = dup2(devnull, STDIN_FILENO);
1612
      if(ret == -1){
1613
	perror_plus("dup2(devnull, STDIN_FILENO)");
1614
	_exit(EX_OSERR);
1615
      }
1616
      ret = close(devnull);
1617
      if(ret == -1){
1618
	perror_plus("close");
1619
	_exit(EX_OSERR);
1620
      }
1621
      ret = dup2(STDERR_FILENO, STDOUT_FILENO);
1622
      if(ret == -1){
1623
	perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");
1624
	_exit(EX_OSERR);
1625
      }
1626
      ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1627
      if(ret == -1){
1628
	perror_plus("setenv");
1629
	_exit(EX_OSERR);
1630
      }
1631
      ret = setenv("DEVICE", interface, 1);
1632
      if(ret == -1){
1633
	perror_plus("setenv");
1634
	_exit(EX_OSERR);
1635
      }
1636
      ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
1637
      if(ret == -1){
1638
	perror_plus("setenv");
1639
	_exit(EX_OSERR);
1640
      }
1641
      ret = setenv("MODE", mode, 1);
1642
      if(ret == -1){
1643
	perror_plus("setenv");
1644
	_exit(EX_OSERR);
1645
      }
1646
      char *delaystring;
1647
      ret = asprintf(&delaystring, "%f", (double)delay);
1648
      if(ret == -1){
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
1649
	perror_plus("asprintf");
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1650
	_exit(EX_OSERR);
1651
      }
1652
      ret = setenv("DELAY", delaystring, 1);
1653
      if(ret == -1){
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
1654
	free(delaystring);
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1655
	perror_plus("setenv");
1656
	_exit(EX_OSERR);
1657
      }
1658
      free(delaystring);
1659
      if(connect_to != NULL){
1660
	ret = setenv("CONNECT", connect_to, 1);
1661
	if(ret == -1){
1662
	  perror_plus("setenv");
1663
	  _exit(EX_OSERR);
1664
	}
1665
      }
237.7.240 by Teddy Hogeborn
Make mandos-client use fexecve().
1666
      if(fexecve(hookdir_fd, (char *const [])
1667
		 { direntry->d_name, NULL }, environ) == -1){
1668
	perror_plus("fexecve");
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1669
	_exit(EXIT_FAILURE);
1670
      }
1671
    } else {
1672
      int status;
1673
      if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1674
	perror_plus("waitpid");
1675
	continue;
1676
      }
1677
      if(WIFEXITED(status)){
1678
	if(WEXITSTATUS(status) != 0){
1679
	  fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1680
		       " with status %d\n", direntry->d_name,
1681
		       WEXITSTATUS(status));
1682
	  continue;
1683
	}
1684
      } else if(WIFSIGNALED(status)){
1685
	fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1686
		     " signal %d\n", direntry->d_name,
1687
		     WTERMSIG(status));
1688
	continue;
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
1689
      } else {
237.7.239 by Teddy Hogeborn
Make mandos-client use scandirat() if it exists.
1690
	fprintf_plus(stderr, "Warning: network hook \"%s\""
1691
		     " crashed\n", direntry->d_name);
1692
	continue;
1693
      }
1694
    }
1695
    if(debug){
1696
      fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
1697
		   direntry->d_name);
1698
    }
1699
  }
1700
  if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
1701
    perror_plus("close");
1702
  } else {
1703
    hookdir_fd = -1;
1704
  }
1705
  close(devnull);
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
1706
}
1707
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1708
__attribute__((nonnull, warn_unused_result))
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1709
error_t bring_up_interface(const char *const interface,
1710
			   const float delay){
1711
  error_t old_errno = errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1712
  int ret;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1713
  struct ifreq network;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1714
  unsigned int if_index = if_nametoindex(interface);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1715
  if(if_index == 0){
1716
    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
1717
    errno = old_errno;
1718
    return ENXIO;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1719
  }
1720
  
1721
  if(quit_now){
237.22.2 by Teddy Hogeborn
* plugins.d/mandos-client.c (bring_up_interface): Bug fix: Return
1722
    errno = old_errno;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1723
    return EINTR;
1724
  }
1725
  
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1726
  if(not interface_is_up(interface)){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1727
    error_t ret_errno = 0, ioctl_errno = 0;
1728
    if(not get_flags(interface, &network)){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1729
      ret_errno = errno;
1730
      fprintf_plus(stderr, "Failed to get flags for interface "
1731
		   "\"%s\"\n", interface);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1732
      errno = old_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1733
      return ret_errno;
1734
    }
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1735
    network.ifr_flags |= IFF_UP; /* set flag */
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1736
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1737
    int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1738
    if(sd == -1){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1739
      ret_errno = errno;
1740
      perror_plus("socket");
1741
      errno = old_errno;
1742
      return ret_errno;
1743
    }
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1744
    
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1745
    if(quit_now){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1746
      ret = (int)TEMP_FAILURE_RETRY(close(sd));
1747
      if(ret == -1){
1748
	perror_plus("close");
1749
      }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1750
      errno = old_errno;
1751
      return EINTR;
1752
    }
1753
    
1754
    if(debug){
1755
      fprintf_plus(stderr, "Bringing up interface \"%s\"\n",
1756
		   interface);
1757
    }
1758
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1759
    /* Raise privileges */
1760
    ret_errno = raise_privileges();
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
1761
    if(ret_errno != 0){
1762
      perror_plus("Failed to raise privileges");
1763
    }
1764
    
1765
#ifdef __linux__
1766
    int ret_linux;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1767
    bool restore_loglevel = false;
1768
    if(ret_errno == 0){
1769
      /* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1770
	 messages about the network interface to mess up the prompt */
1771
      ret_linux = klogctl(8, NULL, 5);
1772
      if(ret_linux == -1){
1773
	perror_plus("klogctl");
1774
      } else {
1775
	restore_loglevel = true;
1776
      }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1777
    }
1778
#endif	/* __linux__ */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1779
    int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1780
    ioctl_errno = errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1781
#ifdef __linux__
1782
    if(restore_loglevel){
1783
      ret_linux = klogctl(7, NULL, 0);
1784
      if(ret_linux == -1){
1785
	perror_plus("klogctl");
1786
      }
1787
    }
1788
#endif	/* __linux__ */
1789
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1790
    /* If raise_privileges() succeeded above */
1791
    if(ret_errno == 0){
1792
      /* Lower privileges */
1793
      ret_errno = lower_privileges();
1794
      if(ret_errno != 0){
1795
	errno = ret_errno;
1796
	perror_plus("Failed to lower privileges");
1797
      }
1798
    }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1799
    
1800
    /* Close the socket */
1801
    ret = (int)TEMP_FAILURE_RETRY(close(sd));
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1802
    if(ret == -1){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1803
      perror_plus("close");
1804
    }
1805
    
1806
    if(ret_setflags == -1){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1807
      errno = ioctl_errno;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1808
      perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
237.22.2 by Teddy Hogeborn
* plugins.d/mandos-client.c (bring_up_interface): Bug fix: Return
1809
      errno = old_errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1810
      return ioctl_errno;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1811
    }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1812
  } else if(debug){
1813
    fprintf_plus(stderr, "Interface \"%s\" is already up; good\n",
1814
		 interface);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1815
  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1816
  
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1817
  /* Sleep checking until interface is running.
1818
     Check every 0.25s, up to total time of delay */
1819
  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.
1820
    if(interface_is_running(interface)){
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1821
      break;
1822
    }
1823
    struct timespec sleeptime = { .tv_nsec = 250000000 };
1824
    ret = nanosleep(&sleeptime, NULL);
1825
    if(ret == -1 and errno != EINTR){
1826
      perror_plus("nanosleep");
1827
    }
1828
  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1829
  
1830
  errno = old_errno;
1831
  return 0;
1832
}
1833
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1834
__attribute__((nonnull, warn_unused_result))
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1835
error_t take_down_interface(const char *const interface){
1836
  error_t old_errno = errno;
1837
  struct ifreq network;
1838
  unsigned int if_index = if_nametoindex(interface);
1839
  if(if_index == 0){
1840
    fprintf_plus(stderr, "No such interface: \"%s\"\n", interface);
1841
    errno = old_errno;
1842
    return ENXIO;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1843
  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1844
  if(interface_is_up(interface)){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1845
    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.
1846
    if(not get_flags(interface, &network) and debug){
1847
      ret_errno = errno;
1848
      fprintf_plus(stderr, "Failed to get flags for interface "
1849
		   "\"%s\"\n", interface);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1850
      errno = old_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1851
      return ret_errno;
1852
    }
1853
    network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1854
    
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
1855
    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.
1856
    if(sd == -1){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1857
      ret_errno = errno;
1858
      perror_plus("socket");
1859
      errno = old_errno;
1860
      return ret_errno;
1861
    }
1862
    
1863
    if(debug){
1864
      fprintf_plus(stderr, "Taking down interface \"%s\"\n",
1865
		   interface);
1866
    }
1867
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1868
    /* Raise privileges */
1869
    ret_errno = raise_privileges();
1870
    if(ret_errno != 0){
1871
      perror_plus("Failed to raise privileges");
1872
    }
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
1873
    
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
1874
    int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1875
    ioctl_errno = errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1876
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1877
    /* If raise_privileges() succeeded above */
1878
    if(ret_errno == 0){
1879
      /* Lower privileges */
1880
      ret_errno = lower_privileges();
1881
      if(ret_errno != 0){
1882
	errno = ret_errno;
1883
	perror_plus("Failed to lower privileges");
1884
      }
1885
    }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1886
    
1887
    /* Close the socket */
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
1888
    int ret = (int)TEMP_FAILURE_RETRY(close(sd));
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1889
    if(ret == -1){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1890
      perror_plus("close");
1891
    }
1892
    
1893
    if(ret_setflags == -1){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1894
      errno = ioctl_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1895
      perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
1896
      errno = old_errno;
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1897
      return ioctl_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1898
    }
1899
  } else if(debug){
1900
    fprintf_plus(stderr, "Interface \"%s\" is already down; odd\n",
1901
		 interface);
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1902
  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1903
  
237.22.2 by Teddy Hogeborn
* plugins.d/mandos-client.c (bring_up_interface): Bug fix: Return
1904
  errno = old_errno;
1905
  return 0;
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
1906
}
1907
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
1908
int main(int argc, char *argv[]){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
1909
  mandos_context mc = { .server = NULL, .dh_bits = 1024,
1910
			.priority = "SECURE256:!CTYPE-X.509:"
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
1911
			"+CTYPE-OPENPGP", .current_server = NULL,
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
1912
			.interfaces = NULL, .interfaces_size = 0 };
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1913
  AvahiSServiceBrowser *sb = NULL;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1914
  error_t ret_errno;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1915
  int ret;
1916
  intmax_t tmpmax;
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
1917
  char *tmp;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1918
  int exitcode = EXIT_SUCCESS;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1919
  char *interfaces_to_take_down = NULL;
1920
  size_t interfaces_to_take_down_size = 0;
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
1921
  char run_tempdir[] = "/run/tmp/mandosXXXXXX";
1922
  char old_tempdir[] = "/tmp/mandosXXXXXX";
1923
  char *tempdir = NULL;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1924
  AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
1925
  const char *seckey = PATHDIR "/" SECKEY;
1926
  const char *pubkey = PATHDIR "/" PUBKEY;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
1927
  char *interfaces_hooks = NULL;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1928
  
1929
  bool gnutls_initialized = false;
1930
  bool gpgme_initialized = false;
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
1931
  float delay = 2.5f;
237.7.33 by Teddy Hogeborn
Merge from Björn.
1932
  double retry_interval = 10; /* 10s between trying a server and
1933
				 retrying the same server again */
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
1934
  
237.2.132 by Teddy Hogeborn
* init.d-mandos (Required-Start, Required-Stop): Bug fix: Added
1935
  struct sigaction old_sigterm_action = { .sa_handler = SIG_DFL };
24.1.134 by Björn Påhlsson
plugin-runner: Added support for empty string arguments
1936
  struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1937
  
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
1938
  uid = getuid();
1939
  gid = getgid();
1940
  
1941
  /* Lower any group privileges we might have, just to be safe */
1942
  errno = 0;
1943
  ret = setgid(gid);
1944
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1945
    perror_plus("setgid");
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
1946
  }
1947
  
1948
  /* Lower user privileges (temporarily) */
1949
  errno = 0;
1950
  ret = seteuid(uid);
1951
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1952
    perror_plus("seteuid");
237.2.131 by Teddy Hogeborn
* plugins.d/mandos-client.c (init_gnutls_session): Retry interrupted
1953
  }
1954
  
1955
  if(quit_now){
1956
    goto end;
1957
  }
1958
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1959
  {
1960
    struct argp_option options[] = {
1961
      { .name = "debug", .key = 128,
1962
	.doc = "Debug mode", .group = 3 },
1963
      { .name = "connect", .key = 'c',
1964
	.arg = "ADDRESS:PORT",
1965
	.doc = "Connect directly to a specific Mandos server",
1966
	.group = 1 },
1967
      { .name = "interface", .key = 'i',
1968
	.arg = "NAME",
237.2.67 by Teddy Hogeborn
Four new interrelated features:
1969
	.doc = "Network interface that will be used to search for"
1970
	" Mandos servers",
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
1971
	.group = 1 },
1972
      { .name = "seckey", .key = 's',
1973
	.arg = "FILE",
1974
	.doc = "OpenPGP secret key file base name",
1975
	.group = 1 },
1976
      { .name = "pubkey", .key = 'p',
1977
	.arg = "FILE",
1978
	.doc = "OpenPGP public key file base name",
1979
	.group = 2 },
1980
      { .name = "dh-bits", .key = 129,
1981
	.arg = "BITS",
1982
	.doc = "Bit length of the prime number used in the"
1983
	" Diffie-Hellman key exchange",
1984
	.group = 2 },
1985
      { .name = "priority", .key = 130,
1986
	.arg = "STRING",
1987
	.doc = "GnuTLS priority string for the TLS handshake",
1988
	.group = 1 },
1989
      { .name = "delay", .key = 131,
1990
	.arg = "SECONDS",
1991
	.doc = "Maximum delay to wait for interface startup",
1992
	.group = 2 },
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
1993
      { .name = "retry", .key = 132,
1994
	.arg = "SECONDS",
237.17.1 by teddy at recompile
Add wireless network hook
1995
	.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.
1996
	.group = 2 },
237.16.4 by teddy at bsnet
* plugins.d/mandos-client.c (runnable_hook): Bug fix: stat using the
1997
      { .name = "network-hook-dir", .key = 133,
1998
	.arg = "DIR",
1999
	.doc = "Directory where network hooks are located",
2000
	.group = 2 },
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2001
      /*
2002
       * These reproduce what we would get without ARGP_NO_HELP
2003
       */
2004
      { .name = "help", .key = '?',
2005
	.doc = "Give this help list", .group = -1 },
2006
      { .name = "usage", .key = -3,
2007
	.doc = "Give a short usage message", .group = -1 },
2008
      { .name = "version", .key = 'V',
2009
	.doc = "Print program version", .group = -1 },
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2010
      { .name = NULL }
2011
    };
2012
    
2013
    error_t parse_opt(int key, char *arg,
2014
		      struct argp_state *state){
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2015
      errno = 0;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2016
      switch(key){
2017
      case 128:			/* --debug */
2018
	debug = true;
2019
	break;
2020
      case 'c':			/* --connect */
2021
	connect_to = arg;
2022
	break;
2023
      case 'i':			/* --interface */
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2024
	ret_errno = argz_add_sep(&mc.interfaces, &mc.interfaces_size,
2025
				 arg, (int)',');
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2026
	if(ret_errno != 0){
2027
	  argp_error(state, "%s", strerror(ret_errno));
2028
	}
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2029
	break;
2030
      case 's':			/* --seckey */
2031
	seckey = arg;
2032
	break;
2033
      case 'p':			/* --pubkey */
2034
	pubkey = arg;
2035
	break;
2036
      case 129:			/* --dh-bits */
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2037
	errno = 0;
2038
	tmpmax = strtoimax(arg, &tmp, 10);
2039
	if(errno != 0 or tmp == arg or *tmp != '\0'
2040
	   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
2041
	  argp_error(state, "Bad number of DH bits");
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2042
	}
2043
	mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
2044
	break;
2045
      case 130:			/* --priority */
2046
	mc.priority = arg;
2047
	break;
2048
      case 131:			/* --delay */
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2049
	errno = 0;
2050
	delay = strtof(arg, &tmp);
2051
	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
2052
	  argp_error(state, "Bad delay");
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2053
	}
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2054
      case 132:			/* --retry */
2055
	errno = 0;
2056
	retry_interval = strtod(arg, &tmp);
2057
	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.
2058
	   or (retry_interval * 1000) > INT_MAX
2059
	   or retry_interval < 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2060
	  argp_error(state, "Bad retry interval");
2061
	}
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2062
	break;
237.16.4 by teddy at bsnet
* plugins.d/mandos-client.c (runnable_hook): Bug fix: stat using the
2063
      case 133:			/* --network-hook-dir */
2064
	hookdir = arg;
2065
	break;
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2066
	/*
2067
	 * These reproduce what we would get without ARGP_NO_HELP
2068
	 */
2069
      case '?':			/* --help */
2070
	argp_state_help(state, state->out_stream,
2071
			(ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
2072
			& ~(unsigned int)ARGP_HELP_EXIT_OK);
2073
      case -3:			/* --usage */
2074
	argp_state_help(state, state->out_stream,
2075
			ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
2076
      case 'V':			/* --version */
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2077
	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
2078
	exit(argp_err_exit_status);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2079
	break;
2080
      default:
2081
	return ARGP_ERR_UNKNOWN;
2082
      }
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2083
      return errno;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2084
    }
2085
    
2086
    struct argp argp = { .options = options, .parser = parse_opt,
2087
			 .args_doc = "",
2088
			 .doc = "Mandos client -- Get and decrypt"
2089
			 " passwords from a Mandos server" };
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2090
    ret = argp_parse(&argp, argc, argv,
2091
		     ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2092
    switch(ret){
2093
    case 0:
2094
      break;
2095
    case ENOMEM:
2096
    default:
2097
      errno = ret;
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2098
      perror_plus("argp_parse");
237.2.157 by Teddy Hogeborn
Convert some programs to use the exit codes from <sysexits.h>. Change
2099
      exitcode = EX_OSERR;
2100
      goto end;
2101
    case EINVAL:
2102
      exitcode = EX_USAGE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2103
      goto end;
2104
    }
2105
  }
237.7.35 by Teddy Hogeborn
* initramfs-tools-script: Abort if plugin-runner is missing. Removed
2106
    
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2107
  {
237.7.35 by Teddy Hogeborn
* initramfs-tools-script: Abort if plugin-runner is missing. Removed
2108
    /* Work around Debian bug #633582:
2109
       <http://bugs.debian.org/633582> */
2110
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2111
    /* Re-raise privileges */
2112
    ret_errno = raise_privileges();
2113
    if(ret_errno != 0){
2114
      errno = ret_errno;
2115
      perror_plus("Failed to raise privileges");
2116
    } else {
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2117
      struct stat st;
2118
      
2119
      if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
2120
	int seckey_fd = open(seckey, O_RDONLY);
2121
	if(seckey_fd == -1){
2122
	  perror_plus("open");
2123
	} else {
2124
	  ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
2125
	  if(ret == -1){
2126
	    perror_plus("fstat");
2127
	  } else {
2128
	    if(S_ISREG(st.st_mode)
2129
	       and st.st_uid == 0 and st.st_gid == 0){
2130
	      ret = fchown(seckey_fd, uid, gid);
2131
	      if(ret == -1){
2132
		perror_plus("fchown");
2133
	      }
2134
	    }
2135
	  }
2136
	  TEMP_FAILURE_RETRY(close(seckey_fd));
2137
	}
2138
      }
2139
    
2140
      if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
2141
	int pubkey_fd = open(pubkey, O_RDONLY);
2142
	if(pubkey_fd == -1){
2143
	  perror_plus("open");
2144
	} else {
2145
	  ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
2146
	  if(ret == -1){
2147
	    perror_plus("fstat");
2148
	  } else {
2149
	    if(S_ISREG(st.st_mode)
2150
	       and st.st_uid == 0 and st.st_gid == 0){
2151
	      ret = fchown(pubkey_fd, uid, gid);
2152
	      if(ret == -1){
2153
		perror_plus("fchown");
2154
	      }
2155
	    }
2156
	  }
2157
	  TEMP_FAILURE_RETRY(close(pubkey_fd));
2158
	}
2159
      }
2160
    
237.16.11 by Teddy Hogeborn
* Makefile (run-client): Add "--network-hook-dir" option.
2161
      /* Lower privileges */
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2162
      ret_errno = lower_privileges();
2163
      if(ret_errno != 0){
2164
	errno = ret_errno;
2165
	perror_plus("Failed to lower privileges");
2166
      }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2167
    }
2168
  }
2169
  
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2170
  /* Remove invalid interface names (except "none") */
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2171
  {
2172
    char *interface = NULL;
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2173
    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.
2174
				 interface))){
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2175
      if(strcmp(interface, "none") != 0
2176
	 and if_nametoindex(interface) == 0){
2177
	if(interface[0] != '\0'){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2178
	  fprintf_plus(stderr, "Not using nonexisting interface"
2179
		       " \"%s\"\n", interface);
2180
	}
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2181
	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.
2182
	interface = NULL;
2183
      }
2184
    }
2185
  }
2186
  
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2187
  /* Run network hooks */
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2188
  {
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2189
    if(mc.interfaces != NULL){
2190
      interfaces_hooks = malloc(mc.interfaces_size);
237.7.147 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Bug fix: Set DEVICE environment
2191
      if(interfaces_hooks == NULL){
2192
	perror_plus("malloc");
2193
	goto end;
2194
      }
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2195
      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.
2196
      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.
2197
    }
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2198
    run_network_hooks("start", interfaces_hooks != NULL ?
2199
		      interfaces_hooks : "", delay);
237.16.16 by teddy at bsnet
* network-hooks.d/bridge: Use "/usr/sbin/brctl" explicitly.
2200
  }
2201
  
24.1.135 by Björn Påhlsson
Earlier signal handling
2202
  if(not debug){
2203
    avahi_set_log_function(empty_log);
2204
  }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2205
  
24.1.135 by Björn Påhlsson
Earlier signal handling
2206
  /* Initialize Avahi early so avahi_simple_poll_quit() can be called
2207
     from the signal handler */
2208
  /* Initialize the pseudo-RNG for Avahi */
2209
  srand((unsigned int) time(NULL));
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
2210
  simple_poll = avahi_simple_poll_new();
2211
  if(simple_poll == NULL){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2212
    fprintf_plus(stderr,
2213
		 "Avahi: Failed to create simple poll object.\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2214
    exitcode = EX_UNAVAILABLE;
24.1.135 by Björn Påhlsson
Earlier signal handling
2215
    goto end;
2216
  }
237.2.72 by Teddy Hogeborn
Merge from Björn:
2217
  
24.1.135 by Björn Påhlsson
Earlier signal handling
2218
  sigemptyset(&sigterm_action.sa_mask);
237.2.72 by Teddy Hogeborn
Merge from Björn:
2219
  ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
2220
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2221
    perror_plus("sigaddset");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2222
    exitcode = EX_OSERR;
237.2.72 by Teddy Hogeborn
Merge from Björn:
2223
    goto end;
2224
  }
2225
  ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
2226
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2227
    perror_plus("sigaddset");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2228
    exitcode = EX_OSERR;
237.2.72 by Teddy Hogeborn
Merge from Björn:
2229
    goto end;
2230
  }
24.1.135 by Björn Påhlsson
Earlier signal handling
2231
  ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
2232
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2233
    perror_plus("sigaddset");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2234
    exitcode = EX_OSERR;
24.1.135 by Björn Påhlsson
Earlier signal handling
2235
    goto end;
2236
  }
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2237
  /* Need to check if the handler is SIG_IGN before handling:
2238
     | [[info:libc:Initial Signal Actions]] |
2239
     | [[info:libc:Basic Signal Handling]]  |
2240
  */
2241
  ret = sigaction(SIGINT, NULL, &old_sigterm_action);
2242
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2243
    perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2244
    return EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2245
  }
2246
  if(old_sigterm_action.sa_handler != SIG_IGN){
2247
    ret = sigaction(SIGINT, &sigterm_action, NULL);
2248
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2249
      perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2250
      exitcode = EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2251
      goto end;
2252
    }
2253
  }
2254
  ret = sigaction(SIGHUP, NULL, &old_sigterm_action);
2255
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2256
    perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2257
    return EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2258
  }
2259
  if(old_sigterm_action.sa_handler != SIG_IGN){
2260
    ret = sigaction(SIGHUP, &sigterm_action, NULL);
2261
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2262
      perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2263
      exitcode = EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2264
      goto end;
2265
    }
2266
  }
2267
  ret = sigaction(SIGTERM, NULL, &old_sigterm_action);
2268
  if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2269
    perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2270
    return EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2271
  }
2272
  if(old_sigterm_action.sa_handler != SIG_IGN){
2273
    ret = sigaction(SIGTERM, &sigterm_action, NULL);
2274
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2275
      perror_plus("sigaction");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2276
      exitcode = EX_OSERR;
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2277
      goto end;
2278
    }
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
2279
  }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2280
  
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2281
  /* If no interfaces were specified, make a list */
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2282
  if(mc.interfaces == NULL){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2283
    struct dirent **direntries;
2284
    /* Look for any good interfaces */
2285
    ret = scandir(sys_class_net, &direntries, good_interface,
2286
		  alphasort);
2287
    if(ret >= 1){
2288
      /* Add all found interfaces to interfaces list */
2289
      for(int i = 0; i < ret; ++i){
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2290
	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.
2291
			     direntries[i]->d_name);
2292
	if(ret_errno != 0){
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
2293
	  errno = ret_errno;
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2294
	  perror_plus("argz_add");
2295
	  continue;
2296
	}
2297
	if(debug){
2298
	  fprintf_plus(stderr, "Will use interface \"%s\"\n",
2299
		       direntries[i]->d_name);
2300
	}
2301
      }
2302
      free(direntries);
2303
    } else {
2304
      free(direntries);
2305
      fprintf_plus(stderr, "Could not find a network interface\n");
2306
      exitcode = EXIT_FAILURE;
2307
      goto end;
2308
    }
2309
  }
2310
  
237.7.153 by Teddy Hogeborn
* plugins.d/mandos-client.c: Comment changes
2311
  /* 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
2312
  {
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2313
    char *interface = NULL;
237.7.151 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): New "interfaces" and
2314
    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.
2315
				 interface))){
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2316
      /* If interface name is "none", stop bringing up interfaces.
2317
	 Also remove all instances of "none" from the list */
2318
      if(strcmp(interface, "none") == 0){
2319
	argz_delete(&mc.interfaces, &mc.interfaces_size,
2320
		    interface);
2321
	interface = NULL;
2322
	while((interface = argz_next(mc.interfaces,
2323
				     mc.interfaces_size, interface))){
2324
	  if(strcmp(interface, "none") == 0){
2325
	    argz_delete(&mc.interfaces, &mc.interfaces_size,
2326
			interface);
2327
	    interface = NULL;
2328
	  }
2329
	}
2330
	break;
2331
      }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2332
      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.
2333
      errno = bring_up_interface(interface, delay);
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2334
      if(not interface_was_up){
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2335
	if(errno != 0){
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2336
	  perror_plus("Failed to bring up interface");
2337
	} else {
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2338
	  errno = argz_add(&interfaces_to_take_down,
2339
			   &interfaces_to_take_down_size,
2340
			   interface);
2341
	  if(errno != 0){
237.7.214 by Teddy Hogeborn
Bug fix: Free all memory and give better messages when memory is full.
2342
	    perror_plus("argz_add");
2343
	  }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2344
	}
2345
      }
2346
    }
2347
    if(debug and (interfaces_to_take_down == NULL)){
2348
      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().
2349
    }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2350
  }
2351
  
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2352
  /* If we only got one interface, explicitly use only that one */
2353
  if(argz_count(mc.interfaces, mc.interfaces_size) == 1){
2354
    if(debug){
2355
      fprintf_plus(stderr, "Using only interface \"%s\"\n",
2356
		   mc.interfaces);
2357
    }
2358
    if_index = (AvahiIfIndex)if_nametoindex(mc.interfaces);
2359
  }
2360
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2361
  if(quit_now){
2362
    goto end;
2363
  }
2364
  
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2365
  ret = init_gnutls_global(pubkey, seckey, &mc);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2366
  if(ret == -1){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2367
    fprintf_plus(stderr, "init_gnutls_global failed\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2368
    exitcode = EX_UNAVAILABLE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2369
    goto end;
2370
  } else {
2371
    gnutls_initialized = true;
2372
  }
2373
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2374
  if(quit_now){
2375
    goto end;
2376
  }
2377
  
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
2378
  /* Try /run/tmp before /tmp */
2379
  tempdir = mkdtemp(run_tempdir);
2380
  if(tempdir == NULL and errno == ENOENT){
2381
      if(debug){
2382
	fprintf_plus(stderr, "Tempdir %s did not work, trying %s\n",
2383
		     run_tempdir, old_tempdir);
2384
      }
2385
      tempdir = mkdtemp(old_tempdir);
2386
  }
2387
  if(tempdir == NULL){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2388
    perror_plus("mkdtemp");
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2389
    goto end;
2390
  }
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2391
  
2392
  if(quit_now){
2393
    goto end;
2394
  }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2395
  
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2396
  if(not init_gpgme(pubkey, seckey, tempdir, &mc)){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2397
    fprintf_plus(stderr, "init_gpgme failed\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2398
    exitcode = EX_UNAVAILABLE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2399
    goto end;
2400
  } else {
2401
    gpgme_initialized = true;
2402
  }
2403
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2404
  if(quit_now){
2405
    goto end;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2406
  }
2407
  
2408
  if(connect_to != NULL){
2409
    /* Connect directly, do not use Zeroconf */
2410
    /* (Mainly meant for debugging) */
2411
    char *address = strrchr(connect_to, ':');
237.22.1 by Teddy Hogeborn
* plugins.d/mandos-client.c: Refactoring.
2412
    
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2413
    if(address == NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2414
      fprintf_plus(stderr, "No colon in address\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2415
      exitcode = EX_USAGE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2416
      goto end;
2417
    }
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2418
    
2419
    if(quit_now){
2420
      goto end;
2421
    }
2422
    
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
2423
    in_port_t port;
237.2.74 by Teddy Hogeborn
Overflows are not detected by sscanf(), so stop using it:
2424
    errno = 0;
2425
    tmpmax = strtoimax(address+1, &tmp, 10);
2426
    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
2427
       or tmpmax != (in_port_t)tmpmax){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2428
      fprintf_plus(stderr, "Bad port number\n");
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2429
      exitcode = EX_USAGE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2430
      goto end;
2431
    }
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2432
    
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2433
    if(quit_now){
2434
      goto end;
2435
    }
2436
    
237.7.145 by Teddy Hogeborn
* plugins.d/mandos-client.c: Don't use assert(). Use in_port_t for
2437
    port = (in_port_t)tmpmax;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2438
    *address = '\0';
237.2.67 by Teddy Hogeborn
Four new interrelated features:
2439
    /* Colon in address indicates IPv6 */
2440
    int af;
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2441
    if(strchr(connect_to, ':') != NULL){
237.2.67 by Teddy Hogeborn
Four new interrelated features:
2442
      af = AF_INET6;
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2443
      /* Accept [] around IPv6 address - see RFC 5952 */
2444
      if(connect_to[0] == '[' and address[-1] == ']')
2445
	{
2446
	  connect_to++;
2447
	  address[-1] = '\0';
2448
	}
237.2.67 by Teddy Hogeborn
Four new interrelated features:
2449
    } else {
2450
      af = AF_INET;
2451
    }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2452
    address = connect_to;
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2453
    
2454
    if(quit_now){
2455
      goto end;
2456
    }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2457
    
24.1.163 by Björn Påhlsson
mandos-client: Added never ending loop for --connect
2458
    while(not quit_now){
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2459
      ret = start_mandos_communication(address, port, if_index, af,
2460
				       &mc);
24.1.163 by Björn Påhlsson
mandos-client: Added never ending loop for --connect
2461
      if(quit_now or ret == 0){
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2462
	break;
2463
      }
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2464
      if(debug){
237.16.9 by Teddy Hogeborn
* plugins.d/mandos-client.c: Merge unified printing system.
2465
	fprintf_plus(stderr, "Retrying in %d seconds\n",
2466
		     (int)retry_interval);
237.7.39 by teddy at bsnet
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
2467
      }
237.7.168 by Teddy Hogeborn
* plugin-runner.c (main): Bug fix; do not ignore return value of
2468
      sleep((unsigned int)retry_interval);
237.7.40 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not even try to work around
2469
    }
2470
    
237.7.219 by Teddy Hogeborn
White space fix: change "if (" to "if(" in C code.
2471
    if(not quit_now){
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2472
      exitcode = EXIT_SUCCESS;
2473
    }
237.15.3 by Teddy Hogeborn
Intermediate commit - this does *not* work yet.
2474
    
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2475
    goto end;
2476
  }
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2477
  
2478
  if(quit_now){
2479
    goto end;
2480
  }
2481
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2482
  {
2483
    AvahiServerConfig config;
2484
    /* Do not publish any local Zeroconf records */
2485
    avahi_server_config_init(&config);
2486
    config.publish_hinfo = 0;
2487
    config.publish_addresses = 0;
2488
    config.publish_workstation = 0;
2489
    config.publish_domain = 0;
2490
    
2491
    /* Allocate a new server */
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
2492
    mc.server = avahi_server_new(avahi_simple_poll_get(simple_poll),
2493
				 &config, NULL, NULL, &ret_errno);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2494
    
2495
    /* Free the Avahi configuration data */
2496
    avahi_server_config_free(&config);
2497
  }
2498
  
2499
  /* Check if creating the Avahi server object succeeded */
2500
  if(mc.server == NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2501
    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.
2502
		 avahi_strerror(ret_errno));
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2503
    exitcode = EX_UNAVAILABLE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2504
    goto end;
2505
  }
2506
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2507
  if(quit_now){
2508
    goto end;
2509
  }
2510
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2511
  /* Create the Avahi service browser */
2512
  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
2513
				   AVAHI_PROTO_UNSPEC, "_mandos._tcp",
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2514
				   NULL, 0, browse_callback,
2515
				   (void *)&mc);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2516
  if(sb == NULL){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2517
    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.
2518
		 avahi_strerror(avahi_server_errno(mc.server)));
237.2.162 by Teddy Hogeborn
* Makefile (BROKEN_PIE): Add comment.
2519
    exitcode = EX_UNAVAILABLE;
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2520
    goto end;
2521
  }
237.2.70 by Teddy Hogeborn
Merge from Björn:
2522
  
237.2.116 by Teddy Hogeborn
* plugins.d/mandos-client.c (quit_now): Move up declaration before
2523
  if(quit_now){
2524
    goto end;
2525
  }
2526
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2527
  /* Run the main loop */
2528
  
2529
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2530
    fprintf_plus(stderr, "Starting Avahi loop search\n");
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2531
  }
237.7.235 by Teddy Hogeborn
White space fix only.
2532
  
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
2533
  ret = avahi_loop_with_timeout(simple_poll,
237.7.150 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Moved to inside "main()".
2534
				(int)(retry_interval * 1000), &mc);
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2535
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2536
    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.
2537
		 (ret == 0) ? "successfully" : "with error");
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2538
  }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2539
  
40 by Teddy Hogeborn
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
2540
 end:
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2541
  
2542
  if(debug){
237.15.6 by Björn Påhlsson
replace calls to fprintf with fprintf_plus.
2543
    fprintf_plus(stderr, "%s exiting\n", argv[0]);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2544
  }
2545
  
2546
  /* Cleanup things */
237.7.152 by Teddy Hogeborn
* plugins.d/mandos-client (start_mandos_communication): Bug fix; skip
2547
  free(mc.interfaces);
2548
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2549
  if(sb != NULL)
2550
    avahi_s_service_browser_free(sb);
2551
  
2552
  if(mc.server != NULL)
2553
    avahi_server_free(mc.server);
2554
  
237.7.149 by Teddy Hogeborn
* plugins.d/mandos-client (mandos_context): Removed "simple_poll"
2555
  if(simple_poll != NULL)
2556
    avahi_simple_poll_free(simple_poll);
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2557
  
2558
  if(gnutls_initialized){
2559
    gnutls_certificate_free_credentials(mc.cred);
2560
    gnutls_global_deinit();
2561
    gnutls_dh_params_deinit(mc.dh_params);
2562
  }
2563
  
2564
  if(gpgme_initialized){
2565
    gpgme_release(mc.ctx);
2566
  }
237.16.12 by Teddy Hogeborn
* plugins.d/mandos-client.c (runnable_hook): Add debug output.
2567
  
237.7.33 by Teddy Hogeborn
Merge from Björn.
2568
  /* Cleans up the circular linked list of Mandos servers the client
2569
     has seen */
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2570
  if(mc.current_server != NULL){
2571
    mc.current_server->prev->next = NULL;
2572
    while(mc.current_server != NULL){
2573
      server *next = mc.current_server->next;
2574
      free(mc.current_server);
2575
      mc.current_server = next;
2576
    }
2577
  }
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2578
  
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2579
  /* Re-raise privileges */
237.16.8 by Teddy Hogeborn
* plugins.d/mandos-client.c (run_network_hooks): New.
2580
  {
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2581
    ret_errno = raise_privileges();
2582
    if(ret_errno != 0){
2583
      perror_plus("Failed to raise privileges");
2584
    } else {
2585
      
2586
      /* Run network hooks */
2587
      run_network_hooks("stop", interfaces_hooks != NULL ?
2588
			interfaces_hooks : "", delay);
2589
      
2590
      /* Take down the network interfaces which were brought up */
2591
      {
2592
	char *interface = NULL;
2593
	while((interface=argz_next(interfaces_to_take_down,
2594
				   interfaces_to_take_down_size,
2595
				   interface))){
2596
	  ret_errno = take_down_interface(interface);
2597
	  if(ret_errno != 0){
2598
	    errno = ret_errno;
2599
	    perror_plus("Failed to take down interface");
2600
	  }
2601
	}
2602
	if(debug and (interfaces_to_take_down == NULL)){
2603
	  fprintf_plus(stderr, "No interfaces needed to be taken"
2604
		       " down\n");
2605
	}
2606
      }
2607
    }
237.7.228 by Teddy Hogeborn
Minor changes to minimize diff from last release.
2608
    
237.7.220 by Teddy Hogeborn
Update GCC warning flags and function attributes to GCC 4.7.
2609
    ret_errno = lower_privileges_permanently();
2610
    if(ret_errno != 0){
2611
      perror_plus("Failed to lower privileges permanently");
2612
    }
237.22.4 by Teddy Hogeborn
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
2613
  }
2614
  
2615
  free(interfaces_to_take_down);
2616
  free(interfaces_hooks);
237.2.113 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Take down network interface on
2617
  
24.1.172 by Björn Påhlsson
using scandir instead of readdir
2618
  /* Removes the GPGME temp directory and all files inside */
237.7.221 by Teddy Hogeborn
Make mandos-client prefer /run/tmp over /tmp.
2619
  if(tempdir != NULL){
24.1.172 by Björn Påhlsson
using scandir instead of readdir
2620
    struct dirent **direntries = NULL;
237.7.242 by Teddy Hogeborn
Make mandos-client use unlinkat() instead of remove().
2621
    int tempdir_fd = (int)TEMP_FAILURE_RETRY(open(tempdir, O_RDONLY));
2622
    if(tempdir_fd == -1){
2623
      perror_plus("open");
2624
    } else {
2625
      int numentries = scandir(tempdir, &direntries, notdotentries,
2626
			       alphasort);
2627
      if(numentries > 0){
2628
	for(int i = 0; i < numentries; i++){
2629
	  ret = unlinkat(tempdir_fd, direntries[i]->d_name, 0);
2630
	  if(ret == -1){
2631
	    fprintf_plus(stderr, "unlinkat(open(\"%s\", O_RDONLY),"
2632
			 " \"%s\", 0): %s\n", tempdir,
2633
			 direntries[i]->d_name, strerror(errno));
2634
	  }
2635
	}
2636
	
2637
	/* need to clean even if 0 because man page doesn't specify */
2638
	free(direntries);
2639
	if(numentries == -1){
2640
	  perror_plus("scandir");
2641
	}
2642
	ret = rmdir(tempdir);
2643
	if(ret == -1 and errno != ENOENT){
2644
	  perror_plus("rmdir");
2645
	}
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2646
      }
237.7.242 by Teddy Hogeborn
Make mandos-client use unlinkat() instead of remove().
2647
      TEMP_FAILURE_RETRY(close(tempdir_fd));
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2648
    }
2649
  }
2650
  
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
2651
  if(quit_now){
237.2.120 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
2652
    sigemptyset(&old_sigterm_action.sa_mask);
2653
    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
2654
    ret = (int)TEMP_FAILURE_RETRY(sigaction(signal_received,
2655
					    &old_sigterm_action,
2656
					    NULL));
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
2657
    if(ret == -1){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2658
      perror_plus("sigaction");
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
2659
    }
237.2.137 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Try harder to raise signal on
2660
    do {
2661
      ret = raise(signal_received);
2662
    } while(ret != 0 and errno == EINTR);
2663
    if(ret != 0){
24.1.174 by Björn Påhlsson
* Makefile (CFLAGS): Added "-lrt" to include real time library.
2664
      perror_plus("raise");
237.2.137 by Teddy Hogeborn
* plugins.d/mandos-client.c (main): Try harder to raise signal on
2665
      abort();
2666
    }
2667
    TEMP_FAILURE_RETRY(pause());
237.2.117 by Teddy Hogeborn
* plugins.d/mandos-client.c (signal_received): New.
2668
  }
2669
  
237.2.56 by Teddy Hogeborn
* plugin-runner.c: Whitespace changes only.
2670
  return exitcode;
13 by Björn Påhlsson
Added following support:
2671
}