1 |
/* |
2 |
vpectrl.C -- the main file for vpectrl |
3 |
Copyright (C) 1998-2002 Ivo Timmermans <ivo@o2w.nl> |
4 |
2000-2002 Guus Sliepen <guus@sliepen.eu.org> |
5 |
2003 Marc Lehmann <pcg@goof.com> |
6 |
|
7 |
This program is free software; you can redistribute it and/or modify |
8 |
it under the terms of the GNU General Public License as published by |
9 |
the Free Software Foundation; either version 2 of the License, or |
10 |
(at your option) any later version. |
11 |
|
12 |
This program is distributed in the hope that it will be useful, |
13 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 |
GNU General Public License for more details. |
16 |
|
17 |
You should have received a copy of the GNU General Public License |
18 |
along with this program; if not, write to the Free Software |
19 |
Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
20 |
*/ |
21 |
|
22 |
#include "config.h" |
23 |
|
24 |
#include <cstdio> |
25 |
#include <cstring> |
26 |
#include <cstdlib> |
27 |
#include <clocale> |
28 |
|
29 |
#include <errno.h> |
30 |
#include <fcntl.h> |
31 |
#include <getopt.h> |
32 |
#include <signal.h> |
33 |
#include <sys/stat.h> |
34 |
#include <sys/types.h> |
35 |
#include <unistd.h> |
36 |
#include <signal.h> |
37 |
|
38 |
#include <openssl/rand.h> |
39 |
#include <openssl/rsa.h> |
40 |
#include <openssl/pem.h> |
41 |
#include <openssl/evp.h> |
42 |
|
43 |
#include "pidfile.h" |
44 |
|
45 |
#include "gettext.h" |
46 |
|
47 |
#include "conf.h" |
48 |
#include "slog.h" |
49 |
#include "util.h" |
50 |
#include "vpn.h" |
51 |
|
52 |
/* If nonzero, display usage information and exit. */ |
53 |
static int show_help; |
54 |
|
55 |
/* If nonzero, print the version on standard output and exit. */ |
56 |
static int show_version; |
57 |
|
58 |
/* If nonzero, it will attempt to kill a running vped and exit. */ |
59 |
static int kill_vped; |
60 |
|
61 |
/* If nonzero, it will attempt to kill a running vped and exit. */ |
62 |
static int show_config; |
63 |
|
64 |
/* If nonzero, generate public/private keypair for this net. */ |
65 |
static int generate_keys; |
66 |
|
67 |
static struct option const long_options[] = |
68 |
{ |
69 |
{"config", required_argument, NULL, 'c'}, |
70 |
{"kill", optional_argument, NULL, 'k'}, |
71 |
{"help", no_argument, &show_help, 1}, |
72 |
{"version", no_argument, &show_version, 1}, |
73 |
{"generate-keys", no_argument, NULL, 'g'}, |
74 |
{"show-config", no_argument, &show_config, 's'}, |
75 |
{NULL, 0, NULL, 0} |
76 |
}; |
77 |
|
78 |
static void |
79 |
usage (int status) |
80 |
{ |
81 |
if (status != 0) |
82 |
fprintf (stderr, _("Try `%s --help\' for more information.\n"), get_identity ()); |
83 |
else |
84 |
{ |
85 |
printf (_("Usage: %s [option]...\n\n"), get_identity ()); |
86 |
printf (_ |
87 |
(" -c, --config=DIR Read configuration options from DIR.\n" |
88 |
" -k, --kill[=SIGNAL] Attempt to kill a running vped and exit.\n" |
89 |
" -g, --generate-keys Generate public/private RSA keypair.\n" |
90 |
" -s, --show-config Display the configuration information.\n" |
91 |
" --help Display this help and exit.\n" |
92 |
" --version Output version information and exit.\n\n")); |
93 |
printf (_("Report bugs to <vpe@plan9.de>.\n")); |
94 |
} |
95 |
|
96 |
exit (status); |
97 |
} |
98 |
|
99 |
void |
100 |
parse_options (int argc, char **argv, char **envp) |
101 |
{ |
102 |
int r; |
103 |
int option_index = 0; |
104 |
|
105 |
while ((r = |
106 |
getopt_long (argc, argv, "c:k::gs", long_options, |
107 |
&option_index)) != EOF) |
108 |
{ |
109 |
switch (r) |
110 |
{ |
111 |
case 0: /* long option */ |
112 |
break; |
113 |
|
114 |
case 'c': /* config file */ |
115 |
confbase = strdup (optarg); |
116 |
break; |
117 |
|
118 |
case 'k': /* kill old vpeds */ |
119 |
if (optarg) |
120 |
{ |
121 |
if (!strcasecmp (optarg, "HUP")) |
122 |
kill_vped = SIGHUP; |
123 |
else if (!strcasecmp (optarg, "TERM")) |
124 |
kill_vped = SIGTERM; |
125 |
else if (!strcasecmp (optarg, "KILL")) |
126 |
kill_vped = SIGKILL; |
127 |
else if (!strcasecmp (optarg, "USR1")) |
128 |
kill_vped = SIGUSR1; |
129 |
else if (!strcasecmp (optarg, "USR2")) |
130 |
kill_vped = SIGUSR2; |
131 |
else if (!strcasecmp (optarg, "INT")) |
132 |
kill_vped = SIGINT; |
133 |
else if (!strcasecmp (optarg, "ALRM")) |
134 |
kill_vped = SIGALRM; |
135 |
else |
136 |
{ |
137 |
kill_vped = atoi (optarg); |
138 |
|
139 |
if (!kill_vped) |
140 |
{ |
141 |
fprintf (stderr, |
142 |
_ |
143 |
("Invalid argument `%s'; SIGNAL must be a number or one of HUP, TERM, KILL, USR1, USR2, WINCH, INT or ALRM.\n"), |
144 |
optarg); |
145 |
usage (1); |
146 |
} |
147 |
} |
148 |
} |
149 |
else |
150 |
kill_vped = SIGTERM; |
151 |
|
152 |
break; |
153 |
|
154 |
case 'g': /* generate public/private keypair */ |
155 |
generate_keys = RSA_KEYBITS; |
156 |
break; |
157 |
|
158 |
case 's': |
159 |
show_config = 1; |
160 |
break; |
161 |
|
162 |
case '?': |
163 |
usage (1); |
164 |
|
165 |
default: |
166 |
break; |
167 |
} |
168 |
} |
169 |
} |
170 |
|
171 |
/* This function prettyprints the key generation process */ |
172 |
|
173 |
void |
174 |
indicator (int a, int b, void *p) |
175 |
{ |
176 |
switch (a) |
177 |
{ |
178 |
case 0: |
179 |
fprintf (stderr, "."); |
180 |
break; |
181 |
|
182 |
case 1: |
183 |
fprintf (stderr, "+"); |
184 |
break; |
185 |
|
186 |
case 2: |
187 |
fprintf (stderr, "-"); |
188 |
break; |
189 |
|
190 |
case 3: |
191 |
switch (b) |
192 |
{ |
193 |
case 0: |
194 |
fprintf (stderr, " p\n"); |
195 |
break; |
196 |
|
197 |
case 1: |
198 |
fprintf (stderr, " q\n"); |
199 |
break; |
200 |
|
201 |
default: |
202 |
fprintf (stderr, "?"); |
203 |
} |
204 |
break; |
205 |
|
206 |
default: |
207 |
fprintf (stderr, "?"); |
208 |
} |
209 |
} |
210 |
|
211 |
/* |
212 |
* generate public/private RSA keypairs for all hosts that don't have one. |
213 |
*/ |
214 |
int |
215 |
keygen (int bits) |
216 |
{ |
217 |
RSA *rsa_key; |
218 |
FILE *f; |
219 |
char *name = NULL; |
220 |
char *fname; |
221 |
|
222 |
asprintf (&fname, "%s/hostkeys", confbase); |
223 |
mkdir (fname, 0700); |
224 |
free (fname); |
225 |
|
226 |
asprintf (&fname, "%s/pubkey", confbase); |
227 |
mkdir (fname, 0700); |
228 |
free (fname); |
229 |
|
230 |
for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i) |
231 |
{ |
232 |
conf_node *node = *i; |
233 |
|
234 |
asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename); |
235 |
|
236 |
f = fopen (fname, "a"); |
237 |
|
238 |
if (!f) |
239 |
{ |
240 |
perror (fname); |
241 |
exit (EXIT_FAILURE); |
242 |
} |
243 |
|
244 |
if (ftell (f)) |
245 |
{ |
246 |
fprintf (stderr, "'%s' already exists, skipping this node\n", |
247 |
fname); |
248 |
fclose (f); |
249 |
continue; |
250 |
} |
251 |
|
252 |
fprintf (stderr, _("generating %d bits key for %s:\n"), bits, |
253 |
node->nodename); |
254 |
|
255 |
rsa_key = RSA_generate_key (bits, 0xFFFF, indicator, NULL); |
256 |
|
257 |
if (!rsa_key) |
258 |
{ |
259 |
fprintf (stderr, _("error during key generation!\n")); |
260 |
return -1; |
261 |
} |
262 |
else |
263 |
fprintf (stderr, _("Done.\n")); |
264 |
|
265 |
require (PEM_write_RSAPublicKey (f, rsa_key)); |
266 |
fclose (f); |
267 |
free (fname); |
268 |
|
269 |
asprintf (&fname, "%s/hostkeys/%s", confbase, node->nodename); |
270 |
|
271 |
f = fopen (fname, "a"); |
272 |
if (!f) |
273 |
{ |
274 |
perror (fname); |
275 |
exit (EXIT_FAILURE); |
276 |
} |
277 |
|
278 |
require (PEM_write_RSAPrivateKey (f, rsa_key, NULL, NULL, 0, NULL, NULL)); |
279 |
fclose (f); |
280 |
free (fname); |
281 |
} |
282 |
|
283 |
return 0; |
284 |
} |
285 |
|
286 |
int |
287 |
main (int argc, char **argv, char **envp) |
288 |
{ |
289 |
set_identity (argv[0]); |
290 |
log_to (LOGTO_STDERR); |
291 |
|
292 |
setlocale (LC_ALL, ""); |
293 |
bindtextdomain (PACKAGE, LOCALEDIR); |
294 |
textdomain (PACKAGE); |
295 |
|
296 |
parse_options (argc, argv, envp); |
297 |
|
298 |
if (show_version) |
299 |
{ |
300 |
printf (_("%s version %s (built %s %s, protocol %d.%d)\n"), get_identity (), |
301 |
VERSION, __DATE__, __TIME__, PROTOCOL_MAJOR, PROTOCOL_MINOR); |
302 |
printf (_("Built with kernel interface %s/%s.\n"), IFTYPE, IFSUBTYPE); |
303 |
printf (_ |
304 |
("Copyright (C) 2003 Marc Lehmann <vpe@plan9.de> and others.\n" |
305 |
"See the AUTHORS file for a complete list.\n\n" |
306 |
"vpe comes with ABSOLUTELY NO WARRANTY. This is free software,\n" |
307 |
"and you are welcome to redistribute it under certain conditions;\n" |
308 |
"see the file COPYING for details.\n")); |
309 |
|
310 |
return 0; |
311 |
} |
312 |
|
313 |
if (show_help) |
314 |
usage (0); |
315 |
|
316 |
conf.read_config (false); |
317 |
|
318 |
if (generate_keys) |
319 |
{ |
320 |
RAND_load_file ("/dev/urandom", 1024); |
321 |
exit (keygen (generate_keys)); |
322 |
} |
323 |
|
324 |
if (kill_vped) |
325 |
exit (kill_other (kill_vped)); |
326 |
|
327 |
if (show_config) |
328 |
{ |
329 |
conf.print (); |
330 |
exit (EXIT_SUCCESS); |
331 |
} |
332 |
|
333 |
usage (1); |
334 |
} |