make IKEv1 DPD timeout configurable in charon
[strongswan.git] / src / libcharon / plugins / medcli / medcli_config.c
1 /*
2 * Copyright (C) 2008 Martin Willi
3 * Hochschule fuer Technik Rapperswil
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 #define _GNU_SOURCE
17 #include <string.h>
18
19 #include "medcli_config.h"
20
21 #include <daemon.h>
22 #include <processing/jobs/callback_job.h>
23
24 typedef struct private_medcli_config_t private_medcli_config_t;
25
26 /**
27 * Private data of an medcli_config_t object
28 */
29 struct private_medcli_config_t {
30
31 /**
32 * Public part
33 */
34 medcli_config_t public;
35
36 /**
37 * database connection
38 */
39 database_t *db;
40
41 /**
42 * rekey time
43 */
44 int rekey;
45
46 /**
47 * dpd delay
48 */
49 int dpd;
50
51 /**
52 * default ike config
53 */
54 ike_cfg_t *ike;
55 };
56
57 /**
58 * create a traffic selector from a CIDR notation string
59 */
60 static traffic_selector_t *ts_from_string(char *str)
61 {
62 if (str)
63 {
64 int netbits = 32;
65 host_t *net;
66 char *pos;
67
68 str = strdupa(str);
69 pos = strchr(str, '/');
70 if (pos)
71 {
72 *pos++ = '\0';
73 netbits = atoi(pos);
74 }
75 else
76 {
77 if (strchr(str, ':'))
78 {
79 netbits = 128;
80 }
81 }
82 net = host_create_from_string(str, 0);
83 if (net)
84 {
85 return traffic_selector_create_from_subnet(net, netbits, 0, 0);
86 }
87 }
88 return traffic_selector_create_dynamic(0, 0, 65535);
89 }
90
91 METHOD(backend_t, get_peer_cfg_by_name, peer_cfg_t*,
92 private_medcli_config_t *this, char *name)
93 {
94 enumerator_t *e;
95 peer_cfg_t *peer_cfg, *med_cfg;
96 auth_cfg_t *auth;
97 ike_cfg_t *ike_cfg;
98 child_cfg_t *child_cfg;
99 chunk_t me, other;
100 char *address, *local_net, *remote_net;
101 lifetime_cfg_t lifetime = {
102 .time = {
103 .life = this->rekey * 60 + this->rekey,
104 .rekey = this->rekey,
105 .jitter = this->rekey
106 }
107 };
108
109 /* query mediation server config:
110 * - build ike_cfg/peer_cfg for mediation connection on-the-fly
111 */
112 e = this->db->query(this->db,
113 "SELECT Address, ClientConfig.KeyId, MediationServerConfig.KeyId "
114 "FROM MediationServerConfig JOIN ClientConfig",
115 DB_TEXT, DB_BLOB, DB_BLOB);
116 if (!e || !e->enumerate(e, &address, &me, &other))
117 {
118 DESTROY_IF(e);
119 return NULL;
120 }
121 ike_cfg = ike_cfg_create(FALSE, FALSE,
122 "0.0.0.0", IKEV2_UDP_PORT, address, IKEV2_UDP_PORT);
123 ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE));
124 med_cfg = peer_cfg_create(
125 "mediation", IKEV2, ike_cfg,
126 CERT_NEVER_SEND, UNIQUE_REPLACE,
127 1, this->rekey*60, 0, /* keytries, rekey, reauth */
128 this->rekey*5, this->rekey*3, /* jitter, overtime */
129 TRUE, FALSE, /* mobike, aggressive */
130 this->dpd, 0, /* DPD delay, timeout */
131 NULL, NULL, /* vip, pool */
132 TRUE, NULL, NULL); /* mediation, med by, peer id */
133 e->destroy(e);
134
135 auth = auth_cfg_create();
136 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
137 auth->add(auth, AUTH_RULE_IDENTITY,
138 identification_create_from_encoding(ID_KEY_ID, me));
139 med_cfg->add_auth_cfg(med_cfg, auth, TRUE);
140 auth = auth_cfg_create();
141 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
142 auth->add(auth, AUTH_RULE_IDENTITY,
143 identification_create_from_encoding(ID_KEY_ID, other));
144 med_cfg->add_auth_cfg(med_cfg, auth, FALSE);
145
146 /* query mediated config:
147 * - use any-any ike_cfg
148 * - build peer_cfg on-the-fly using med_cfg
149 * - add a child_cfg
150 */
151 e = this->db->query(this->db,
152 "SELECT ClientConfig.KeyId, Connection.KeyId, "
153 "Connection.LocalSubnet, Connection.RemoteSubnet "
154 "FROM ClientConfig JOIN Connection "
155 "WHERE Active AND Alias = ?", DB_TEXT, name,
156 DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
157 if (!e || !e->enumerate(e, &me, &other, &local_net, &remote_net))
158 {
159 DESTROY_IF(e);
160 return NULL;
161 }
162 peer_cfg = peer_cfg_create(
163 name, IKEV2, this->ike->get_ref(this->ike),
164 CERT_NEVER_SEND, UNIQUE_REPLACE,
165 1, this->rekey*60, 0, /* keytries, rekey, reauth */
166 this->rekey*5, this->rekey*3, /* jitter, overtime */
167 TRUE, FALSE, /* mobike, aggressive */
168 this->dpd, 0, /* DPD delay, timeout */
169 NULL, NULL, /* vip, pool */
170 FALSE, med_cfg, /* mediation, med by */
171 identification_create_from_encoding(ID_KEY_ID, other));
172
173 auth = auth_cfg_create();
174 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
175 auth->add(auth, AUTH_RULE_IDENTITY,
176 identification_create_from_encoding(ID_KEY_ID, me));
177 peer_cfg->add_auth_cfg(peer_cfg, auth, TRUE);
178 auth = auth_cfg_create();
179 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
180 auth->add(auth, AUTH_RULE_IDENTITY,
181 identification_create_from_encoding(ID_KEY_ID, other));
182 peer_cfg->add_auth_cfg(peer_cfg, auth, FALSE);
183
184 child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE, MODE_TUNNEL,
185 ACTION_NONE, ACTION_NONE, ACTION_NONE, FALSE,
186 0, 0, NULL, NULL, 0);
187 child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
188 child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
189 child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
190 peer_cfg->add_child_cfg(peer_cfg, child_cfg);
191 e->destroy(e);
192 return peer_cfg;
193 }
194
195 METHOD(backend_t, create_ike_cfg_enumerator, enumerator_t*,
196 private_medcli_config_t *this, host_t *me, host_t *other)
197 {
198 return enumerator_create_single(this->ike, NULL);
199 }
200
201 typedef struct {
202 /** implements enumerator */
203 enumerator_t public;
204 /** inner SQL enumerator */
205 enumerator_t *inner;
206 /** currently enumerated peer config */
207 peer_cfg_t *current;
208 /** ike cfg to use in peer cfg */
209 ike_cfg_t *ike;
210 /** rekey time */
211 int rekey;
212 /** dpd time */
213 int dpd;
214 } peer_enumerator_t;
215
216 METHOD(enumerator_t, peer_enumerator_enumerate, bool,
217 peer_enumerator_t *this, peer_cfg_t **cfg)
218 {
219 char *name, *local_net, *remote_net;
220 chunk_t me, other;
221 child_cfg_t *child_cfg;
222 auth_cfg_t *auth;
223 lifetime_cfg_t lifetime = {
224 .time = {
225 .life = this->rekey * 60 + this->rekey,
226 .rekey = this->rekey,
227 .jitter = this->rekey
228 }
229 };
230
231 DESTROY_IF(this->current);
232 if (!this->inner->enumerate(this->inner, &name, &me, &other,
233 &local_net, &remote_net))
234 {
235 this->current = NULL;
236 return FALSE;
237 }
238 this->current = peer_cfg_create(
239 name, IKEV2, this->ike->get_ref(this->ike),
240 CERT_NEVER_SEND, UNIQUE_REPLACE,
241 1, this->rekey*60, 0, /* keytries, rekey, reauth */
242 this->rekey*5, this->rekey*3, /* jitter, overtime */
243 TRUE, FALSE, /* mobike, aggressive */
244 this->dpd, 0, /* DPD delay, timeout */
245 NULL, NULL, /* vip, pool */
246 FALSE, NULL, NULL); /* mediation, med by, peer id */
247
248 auth = auth_cfg_create();
249 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
250 auth->add(auth, AUTH_RULE_IDENTITY,
251 identification_create_from_encoding(ID_KEY_ID, me));
252 this->current->add_auth_cfg(this->current, auth, TRUE);
253 auth = auth_cfg_create();
254 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
255 auth->add(auth, AUTH_RULE_IDENTITY,
256 identification_create_from_encoding(ID_KEY_ID, other));
257 this->current->add_auth_cfg(this->current, auth, FALSE);
258
259 child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE, MODE_TUNNEL,
260 ACTION_NONE, ACTION_NONE, ACTION_NONE, FALSE,
261 0, 0, NULL, NULL, 0);
262 child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
263 child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
264 child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
265 this->current->add_child_cfg(this->current, child_cfg);
266 *cfg = this->current;
267 return TRUE;
268 }
269
270 METHOD(enumerator_t, peer_enumerator_destroy, void,
271 peer_enumerator_t *this)
272 {
273 DESTROY_IF(this->current);
274 this->inner->destroy(this->inner);
275 free(this);
276 }
277
278 METHOD(backend_t, create_peer_cfg_enumerator, enumerator_t*,
279 private_medcli_config_t *this, identification_t *me,
280 identification_t *other)
281 {
282 peer_enumerator_t *e;
283
284 INIT(e,
285 .public = {
286 .enumerate = (void*)_peer_enumerator_enumerate,
287 .destroy = _peer_enumerator_destroy,
288 },
289 .ike = this->ike,
290 .rekey = this->rekey,
291 .dpd = this->dpd,
292 );
293
294 /* filter on IDs: NULL or ANY or matching KEY_ID */
295 e->inner = this->db->query(this->db,
296 "SELECT Alias, ClientConfig.KeyId, Connection.KeyId, "
297 "Connection.LocalSubnet, Connection.RemoteSubnet "
298 "FROM ClientConfig JOIN Connection "
299 "WHERE Active AND "
300 "(? OR ClientConfig.KeyId = ?) AND (? OR Connection.KeyId = ?)",
301 DB_INT, me == NULL || me->get_type(me) == ID_ANY,
302 DB_BLOB, me && me->get_type(me) == ID_KEY_ID ?
303 me->get_encoding(me) : chunk_empty,
304 DB_INT, other == NULL || other->get_type(other) == ID_ANY,
305 DB_BLOB, other && other->get_type(other) == ID_KEY_ID ?
306 other->get_encoding(other) : chunk_empty,
307 DB_TEXT, DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
308 if (!e->inner)
309 {
310 free(e);
311 return NULL;
312 }
313 return &e->public;
314 }
315
316 /**
317 * initiate a peer config
318 */
319 static job_requeue_t initiate_config(peer_cfg_t *peer_cfg)
320 {
321 enumerator_t *enumerator;
322 child_cfg_t *child_cfg = NULL;;
323
324 enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
325 enumerator->enumerate(enumerator, &child_cfg);
326 if (child_cfg)
327 {
328 child_cfg->get_ref(child_cfg);
329 peer_cfg->get_ref(peer_cfg);
330 enumerator->destroy(enumerator);
331 charon->controller->initiate(charon->controller,
332 peer_cfg, child_cfg, NULL, NULL, 0);
333 }
334 else
335 {
336 enumerator->destroy(enumerator);
337 }
338 return JOB_REQUEUE_NONE;
339 }
340
341 /**
342 * schedule initiation of all "active" connections
343 */
344 static void schedule_autoinit(private_medcli_config_t *this)
345 {
346 enumerator_t *e;
347 char *name;
348
349 e = this->db->query(this->db, "SELECT Alias FROM Connection WHERE Active",
350 DB_TEXT);
351 if (e)
352 {
353 while (e->enumerate(e, &name))
354 {
355 peer_cfg_t *peer_cfg;
356
357 peer_cfg = get_peer_cfg_by_name(this, name);
358 if (peer_cfg)
359 {
360 /* schedule asynchronous initiation job */
361 lib->processor->queue_job(lib->processor,
362 (job_t*)callback_job_create(
363 (callback_job_cb_t)initiate_config,
364 peer_cfg, (void*)peer_cfg->destroy, NULL));
365 }
366 }
367 e->destroy(e);
368 }
369 }
370
371 METHOD(medcli_config_t, destroy, void,
372 private_medcli_config_t *this)
373 {
374 this->ike->destroy(this->ike);
375 free(this);
376 }
377
378 /**
379 * Described in header.
380 */
381 medcli_config_t *medcli_config_create(database_t *db)
382 {
383 private_medcli_config_t *this;
384
385 INIT(this,
386 .public = {
387 .backend = {
388 .create_peer_cfg_enumerator = _create_peer_cfg_enumerator,
389 .create_ike_cfg_enumerator = _create_ike_cfg_enumerator,
390 .get_peer_cfg_by_name = _get_peer_cfg_by_name,
391 },
392 .destroy = _destroy,
393 },
394 .db = db,
395 .rekey = lib->settings->get_time(lib->settings, "medcli.rekey", 1200),
396 .dpd = lib->settings->get_time(lib->settings, "medcli.dpd", 300),
397 .ike = ike_cfg_create(FALSE, FALSE, "0.0.0.0", IKEV2_UDP_PORT,
398 "0.0.0.0", IKEV2_UDP_PORT),
399 );
400 this->ike->add_proposal(this->ike, proposal_create_default(PROTO_IKE));
401
402 schedule_autoinit(this);
403
404 return &this->public;
405 }
406