c0b39e4154135bf287dddbd38120ba6a59b6aec8
[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 traffic_selector_t *ts;
65
66 ts = traffic_selector_create_from_cidr(str, 0, 0, 65535);
67 if (ts)
68 {
69 return ts;
70 }
71 }
72 return traffic_selector_create_dynamic(0, 0, 65535);
73 }
74
75 METHOD(backend_t, get_peer_cfg_by_name, peer_cfg_t*,
76 private_medcli_config_t *this, char *name)
77 {
78 enumerator_t *e;
79 peer_cfg_t *peer_cfg, *med_cfg;
80 auth_cfg_t *auth;
81 ike_cfg_t *ike_cfg;
82 child_cfg_t *child_cfg;
83 chunk_t me, other;
84 char *address, *local_net, *remote_net;
85 lifetime_cfg_t lifetime = {
86 .time = {
87 .life = this->rekey * 60 + this->rekey,
88 .rekey = this->rekey,
89 .jitter = this->rekey
90 }
91 };
92
93 /* query mediation server config:
94 * - build ike_cfg/peer_cfg for mediation connection on-the-fly
95 */
96 e = this->db->query(this->db,
97 "SELECT Address, ClientConfig.KeyId, MediationServerConfig.KeyId "
98 "FROM MediationServerConfig JOIN ClientConfig",
99 DB_TEXT, DB_BLOB, DB_BLOB);
100 if (!e || !e->enumerate(e, &address, &me, &other))
101 {
102 DESTROY_IF(e);
103 return NULL;
104 }
105 ike_cfg = ike_cfg_create(IKEV2, FALSE, FALSE, "0.0.0.0",
106 charon->socket->get_port(charon->socket, FALSE),
107 address, IKEV2_UDP_PORT, FRAGMENTATION_NO, 0);
108 ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE));
109 ike_cfg->add_proposal(ike_cfg, proposal_create_default_aead(PROTO_IKE));
110 med_cfg = peer_cfg_create(
111 "mediation", ike_cfg,
112 CERT_NEVER_SEND, UNIQUE_REPLACE,
113 1, this->rekey*60, 0, /* keytries, rekey, reauth */
114 this->rekey*5, this->rekey*3, /* jitter, overtime */
115 TRUE, FALSE, TRUE, /* mobike, aggressive, pull */
116 this->dpd, 0, /* DPD delay, timeout */
117 TRUE, NULL, NULL); /* mediation, med by, peer id */
118 e->destroy(e);
119
120 auth = auth_cfg_create();
121 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
122 auth->add(auth, AUTH_RULE_IDENTITY,
123 identification_create_from_encoding(ID_KEY_ID, me));
124 med_cfg->add_auth_cfg(med_cfg, auth, TRUE);
125 auth = auth_cfg_create();
126 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
127 auth->add(auth, AUTH_RULE_IDENTITY,
128 identification_create_from_encoding(ID_KEY_ID, other));
129 med_cfg->add_auth_cfg(med_cfg, auth, FALSE);
130
131 /* query mediated config:
132 * - use any-any ike_cfg
133 * - build peer_cfg on-the-fly using med_cfg
134 * - add a child_cfg
135 */
136 e = this->db->query(this->db,
137 "SELECT ClientConfig.KeyId, Connection.KeyId, "
138 "Connection.LocalSubnet, Connection.RemoteSubnet "
139 "FROM ClientConfig JOIN Connection "
140 "WHERE Active AND Alias = ?", DB_TEXT, name,
141 DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
142 if (!e || !e->enumerate(e, &me, &other, &local_net, &remote_net))
143 {
144 DESTROY_IF(e);
145 return NULL;
146 }
147 peer_cfg = peer_cfg_create(
148 name, this->ike->get_ref(this->ike),
149 CERT_NEVER_SEND, UNIQUE_REPLACE,
150 1, this->rekey*60, 0, /* keytries, rekey, reauth */
151 this->rekey*5, this->rekey*3, /* jitter, overtime */
152 TRUE, FALSE, TRUE, /* mobike, aggressive, pull */
153 this->dpd, 0, /* DPD delay, timeout */
154 FALSE, med_cfg, /* mediation, med by */
155 identification_create_from_encoding(ID_KEY_ID, other));
156
157 auth = auth_cfg_create();
158 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
159 auth->add(auth, AUTH_RULE_IDENTITY,
160 identification_create_from_encoding(ID_KEY_ID, me));
161 peer_cfg->add_auth_cfg(peer_cfg, auth, TRUE);
162 auth = auth_cfg_create();
163 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
164 auth->add(auth, AUTH_RULE_IDENTITY,
165 identification_create_from_encoding(ID_KEY_ID, other));
166 peer_cfg->add_auth_cfg(peer_cfg, auth, FALSE);
167
168 child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE, MODE_TUNNEL,
169 ACTION_NONE, ACTION_NONE, ACTION_NONE, FALSE,
170 0, 0, NULL, NULL, 0);
171 child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
172 child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
173 child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
174 peer_cfg->add_child_cfg(peer_cfg, child_cfg);
175 e->destroy(e);
176 return peer_cfg;
177 }
178
179 METHOD(backend_t, create_ike_cfg_enumerator, enumerator_t*,
180 private_medcli_config_t *this, host_t *me, host_t *other)
181 {
182 return enumerator_create_single(this->ike, NULL);
183 }
184
185 typedef struct {
186 /** implements enumerator */
187 enumerator_t public;
188 /** inner SQL enumerator */
189 enumerator_t *inner;
190 /** currently enumerated peer config */
191 peer_cfg_t *current;
192 /** ike cfg to use in peer cfg */
193 ike_cfg_t *ike;
194 /** rekey time */
195 int rekey;
196 /** dpd time */
197 int dpd;
198 } peer_enumerator_t;
199
200 METHOD(enumerator_t, peer_enumerator_enumerate, bool,
201 peer_enumerator_t *this, peer_cfg_t **cfg)
202 {
203 char *name, *local_net, *remote_net;
204 chunk_t me, other;
205 child_cfg_t *child_cfg;
206 auth_cfg_t *auth;
207 lifetime_cfg_t lifetime = {
208 .time = {
209 .life = this->rekey * 60 + this->rekey,
210 .rekey = this->rekey,
211 .jitter = this->rekey
212 }
213 };
214
215 DESTROY_IF(this->current);
216 if (!this->inner->enumerate(this->inner, &name, &me, &other,
217 &local_net, &remote_net))
218 {
219 this->current = NULL;
220 return FALSE;
221 }
222 this->current = peer_cfg_create(
223 name, this->ike->get_ref(this->ike),
224 CERT_NEVER_SEND, UNIQUE_REPLACE,
225 1, this->rekey*60, 0, /* keytries, rekey, reauth */
226 this->rekey*5, this->rekey*3, /* jitter, overtime */
227 TRUE, FALSE, TRUE, /* mobike, aggressive, pull */
228 this->dpd, 0, /* DPD delay, timeout */
229 FALSE, NULL, NULL); /* mediation, med by, peer id */
230
231 auth = auth_cfg_create();
232 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
233 auth->add(auth, AUTH_RULE_IDENTITY,
234 identification_create_from_encoding(ID_KEY_ID, me));
235 this->current->add_auth_cfg(this->current, auth, TRUE);
236 auth = auth_cfg_create();
237 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
238 auth->add(auth, AUTH_RULE_IDENTITY,
239 identification_create_from_encoding(ID_KEY_ID, other));
240 this->current->add_auth_cfg(this->current, auth, FALSE);
241
242 child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE, MODE_TUNNEL,
243 ACTION_NONE, ACTION_NONE, ACTION_NONE, FALSE,
244 0, 0, NULL, NULL, 0);
245 child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
246 child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
247 child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
248 this->current->add_child_cfg(this->current, child_cfg);
249 *cfg = this->current;
250 return TRUE;
251 }
252
253 METHOD(enumerator_t, peer_enumerator_destroy, void,
254 peer_enumerator_t *this)
255 {
256 DESTROY_IF(this->current);
257 this->inner->destroy(this->inner);
258 free(this);
259 }
260
261 METHOD(backend_t, create_peer_cfg_enumerator, enumerator_t*,
262 private_medcli_config_t *this, identification_t *me,
263 identification_t *other)
264 {
265 peer_enumerator_t *e;
266
267 INIT(e,
268 .public = {
269 .enumerate = (void*)_peer_enumerator_enumerate,
270 .destroy = _peer_enumerator_destroy,
271 },
272 .ike = this->ike,
273 .rekey = this->rekey,
274 .dpd = this->dpd,
275 );
276
277 /* filter on IDs: NULL or ANY or matching KEY_ID */
278 e->inner = this->db->query(this->db,
279 "SELECT Alias, ClientConfig.KeyId, Connection.KeyId, "
280 "Connection.LocalSubnet, Connection.RemoteSubnet "
281 "FROM ClientConfig JOIN Connection "
282 "WHERE Active AND "
283 "(? OR ClientConfig.KeyId = ?) AND (? OR Connection.KeyId = ?)",
284 DB_INT, me == NULL || me->get_type(me) == ID_ANY,
285 DB_BLOB, me && me->get_type(me) == ID_KEY_ID ?
286 me->get_encoding(me) : chunk_empty,
287 DB_INT, other == NULL || other->get_type(other) == ID_ANY,
288 DB_BLOB, other && other->get_type(other) == ID_KEY_ID ?
289 other->get_encoding(other) : chunk_empty,
290 DB_TEXT, DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
291 if (!e->inner)
292 {
293 free(e);
294 return NULL;
295 }
296 return &e->public;
297 }
298
299 /**
300 * initiate a peer config
301 */
302 static job_requeue_t initiate_config(peer_cfg_t *peer_cfg)
303 {
304 enumerator_t *enumerator;
305 child_cfg_t *child_cfg = NULL;;
306
307 enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
308 enumerator->enumerate(enumerator, &child_cfg);
309 if (child_cfg)
310 {
311 child_cfg->get_ref(child_cfg);
312 peer_cfg->get_ref(peer_cfg);
313 enumerator->destroy(enumerator);
314 charon->controller->initiate(charon->controller,
315 peer_cfg, child_cfg, NULL, NULL, 0);
316 }
317 else
318 {
319 enumerator->destroy(enumerator);
320 }
321 return JOB_REQUEUE_NONE;
322 }
323
324 /**
325 * schedule initiation of all "active" connections
326 */
327 static void schedule_autoinit(private_medcli_config_t *this)
328 {
329 enumerator_t *e;
330 char *name;
331
332 e = this->db->query(this->db, "SELECT Alias FROM Connection WHERE Active",
333 DB_TEXT);
334 if (e)
335 {
336 while (e->enumerate(e, &name))
337 {
338 peer_cfg_t *peer_cfg;
339
340 peer_cfg = get_peer_cfg_by_name(this, name);
341 if (peer_cfg)
342 {
343 /* schedule asynchronous initiation job */
344 lib->processor->queue_job(lib->processor,
345 (job_t*)callback_job_create(
346 (callback_job_cb_t)initiate_config,
347 peer_cfg, (void*)peer_cfg->destroy, NULL));
348 }
349 }
350 e->destroy(e);
351 }
352 }
353
354 METHOD(medcli_config_t, destroy, void,
355 private_medcli_config_t *this)
356 {
357 this->ike->destroy(this->ike);
358 free(this);
359 }
360
361 /**
362 * Described in header.
363 */
364 medcli_config_t *medcli_config_create(database_t *db)
365 {
366 private_medcli_config_t *this;
367
368 INIT(this,
369 .public = {
370 .backend = {
371 .create_peer_cfg_enumerator = _create_peer_cfg_enumerator,
372 .create_ike_cfg_enumerator = _create_ike_cfg_enumerator,
373 .get_peer_cfg_by_name = _get_peer_cfg_by_name,
374 },
375 .destroy = _destroy,
376 },
377 .db = db,
378 .rekey = lib->settings->get_time(lib->settings, "medcli.rekey", 1200),
379 .dpd = lib->settings->get_time(lib->settings, "medcli.dpd", 300),
380 .ike = ike_cfg_create(IKEV2, FALSE, FALSE, "0.0.0.0",
381 charon->socket->get_port(charon->socket, FALSE),
382 "0.0.0.0", IKEV2_UDP_PORT,
383 FRAGMENTATION_NO, 0),
384 );
385 this->ike->add_proposal(this->ike, proposal_create_default(PROTO_IKE));
386 this->ike->add_proposal(this->ike, proposal_create_default_aead(PROTO_IKE));
387
388 schedule_autoinit(this);
389
390 return &this->public;
391 }