d048b003b4c8036b317ea6ea98f2729bea436347
[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 med_cfg = peer_cfg_create(
110 "mediation", ike_cfg,
111 CERT_NEVER_SEND, UNIQUE_REPLACE,
112 1, this->rekey*60, 0, /* keytries, rekey, reauth */
113 this->rekey*5, this->rekey*3, /* jitter, overtime */
114 TRUE, FALSE, TRUE, /* mobike, aggressive, pull */
115 this->dpd, 0, /* DPD delay, timeout */
116 TRUE, NULL, NULL); /* mediation, med by, peer id */
117 e->destroy(e);
118
119 auth = auth_cfg_create();
120 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
121 auth->add(auth, AUTH_RULE_IDENTITY,
122 identification_create_from_encoding(ID_KEY_ID, me));
123 med_cfg->add_auth_cfg(med_cfg, auth, TRUE);
124 auth = auth_cfg_create();
125 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
126 auth->add(auth, AUTH_RULE_IDENTITY,
127 identification_create_from_encoding(ID_KEY_ID, other));
128 med_cfg->add_auth_cfg(med_cfg, auth, FALSE);
129
130 /* query mediated config:
131 * - use any-any ike_cfg
132 * - build peer_cfg on-the-fly using med_cfg
133 * - add a child_cfg
134 */
135 e = this->db->query(this->db,
136 "SELECT ClientConfig.KeyId, Connection.KeyId, "
137 "Connection.LocalSubnet, Connection.RemoteSubnet "
138 "FROM ClientConfig JOIN Connection "
139 "WHERE Active AND Alias = ?", DB_TEXT, name,
140 DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
141 if (!e || !e->enumerate(e, &me, &other, &local_net, &remote_net))
142 {
143 DESTROY_IF(e);
144 return NULL;
145 }
146 peer_cfg = peer_cfg_create(
147 name, this->ike->get_ref(this->ike),
148 CERT_NEVER_SEND, UNIQUE_REPLACE,
149 1, this->rekey*60, 0, /* keytries, rekey, reauth */
150 this->rekey*5, this->rekey*3, /* jitter, overtime */
151 TRUE, FALSE, TRUE, /* mobike, aggressive, pull */
152 this->dpd, 0, /* DPD delay, timeout */
153 FALSE, med_cfg, /* mediation, med by */
154 identification_create_from_encoding(ID_KEY_ID, other));
155
156 auth = auth_cfg_create();
157 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
158 auth->add(auth, AUTH_RULE_IDENTITY,
159 identification_create_from_encoding(ID_KEY_ID, me));
160 peer_cfg->add_auth_cfg(peer_cfg, auth, TRUE);
161 auth = auth_cfg_create();
162 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
163 auth->add(auth, AUTH_RULE_IDENTITY,
164 identification_create_from_encoding(ID_KEY_ID, other));
165 peer_cfg->add_auth_cfg(peer_cfg, auth, FALSE);
166
167 child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE, MODE_TUNNEL,
168 ACTION_NONE, ACTION_NONE, ACTION_NONE, FALSE,
169 0, 0, NULL, NULL, 0);
170 child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
171 child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
172 child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
173 peer_cfg->add_child_cfg(peer_cfg, child_cfg);
174 e->destroy(e);
175 return peer_cfg;
176 }
177
178 METHOD(backend_t, create_ike_cfg_enumerator, enumerator_t*,
179 private_medcli_config_t *this, host_t *me, host_t *other)
180 {
181 return enumerator_create_single(this->ike, NULL);
182 }
183
184 typedef struct {
185 /** implements enumerator */
186 enumerator_t public;
187 /** inner SQL enumerator */
188 enumerator_t *inner;
189 /** currently enumerated peer config */
190 peer_cfg_t *current;
191 /** ike cfg to use in peer cfg */
192 ike_cfg_t *ike;
193 /** rekey time */
194 int rekey;
195 /** dpd time */
196 int dpd;
197 } peer_enumerator_t;
198
199 METHOD(enumerator_t, peer_enumerator_enumerate, bool,
200 peer_enumerator_t *this, peer_cfg_t **cfg)
201 {
202 char *name, *local_net, *remote_net;
203 chunk_t me, other;
204 child_cfg_t *child_cfg;
205 auth_cfg_t *auth;
206 lifetime_cfg_t lifetime = {
207 .time = {
208 .life = this->rekey * 60 + this->rekey,
209 .rekey = this->rekey,
210 .jitter = this->rekey
211 }
212 };
213
214 DESTROY_IF(this->current);
215 if (!this->inner->enumerate(this->inner, &name, &me, &other,
216 &local_net, &remote_net))
217 {
218 this->current = NULL;
219 return FALSE;
220 }
221 this->current = peer_cfg_create(
222 name, this->ike->get_ref(this->ike),
223 CERT_NEVER_SEND, UNIQUE_REPLACE,
224 1, this->rekey*60, 0, /* keytries, rekey, reauth */
225 this->rekey*5, this->rekey*3, /* jitter, overtime */
226 TRUE, FALSE, TRUE, /* mobike, aggressive, pull */
227 this->dpd, 0, /* DPD delay, timeout */
228 FALSE, NULL, NULL); /* mediation, med by, peer id */
229
230 auth = auth_cfg_create();
231 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
232 auth->add(auth, AUTH_RULE_IDENTITY,
233 identification_create_from_encoding(ID_KEY_ID, me));
234 this->current->add_auth_cfg(this->current, auth, TRUE);
235 auth = auth_cfg_create();
236 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
237 auth->add(auth, AUTH_RULE_IDENTITY,
238 identification_create_from_encoding(ID_KEY_ID, other));
239 this->current->add_auth_cfg(this->current, auth, FALSE);
240
241 child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE, MODE_TUNNEL,
242 ACTION_NONE, ACTION_NONE, ACTION_NONE, FALSE,
243 0, 0, NULL, NULL, 0);
244 child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
245 child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
246 child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
247 this->current->add_child_cfg(this->current, child_cfg);
248 *cfg = this->current;
249 return TRUE;
250 }
251
252 METHOD(enumerator_t, peer_enumerator_destroy, void,
253 peer_enumerator_t *this)
254 {
255 DESTROY_IF(this->current);
256 this->inner->destroy(this->inner);
257 free(this);
258 }
259
260 METHOD(backend_t, create_peer_cfg_enumerator, enumerator_t*,
261 private_medcli_config_t *this, identification_t *me,
262 identification_t *other)
263 {
264 peer_enumerator_t *e;
265
266 INIT(e,
267 .public = {
268 .enumerate = (void*)_peer_enumerator_enumerate,
269 .destroy = _peer_enumerator_destroy,
270 },
271 .ike = this->ike,
272 .rekey = this->rekey,
273 .dpd = this->dpd,
274 );
275
276 /* filter on IDs: NULL or ANY or matching KEY_ID */
277 e->inner = this->db->query(this->db,
278 "SELECT Alias, ClientConfig.KeyId, Connection.KeyId, "
279 "Connection.LocalSubnet, Connection.RemoteSubnet "
280 "FROM ClientConfig JOIN Connection "
281 "WHERE Active AND "
282 "(? OR ClientConfig.KeyId = ?) AND (? OR Connection.KeyId = ?)",
283 DB_INT, me == NULL || me->get_type(me) == ID_ANY,
284 DB_BLOB, me && me->get_type(me) == ID_KEY_ID ?
285 me->get_encoding(me) : chunk_empty,
286 DB_INT, other == NULL || other->get_type(other) == ID_ANY,
287 DB_BLOB, other && other->get_type(other) == ID_KEY_ID ?
288 other->get_encoding(other) : chunk_empty,
289 DB_TEXT, DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
290 if (!e->inner)
291 {
292 free(e);
293 return NULL;
294 }
295 return &e->public;
296 }
297
298 /**
299 * initiate a peer config
300 */
301 static job_requeue_t initiate_config(peer_cfg_t *peer_cfg)
302 {
303 enumerator_t *enumerator;
304 child_cfg_t *child_cfg = NULL;;
305
306 enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
307 enumerator->enumerate(enumerator, &child_cfg);
308 if (child_cfg)
309 {
310 child_cfg->get_ref(child_cfg);
311 peer_cfg->get_ref(peer_cfg);
312 enumerator->destroy(enumerator);
313 charon->controller->initiate(charon->controller,
314 peer_cfg, child_cfg, NULL, NULL, 0);
315 }
316 else
317 {
318 enumerator->destroy(enumerator);
319 }
320 return JOB_REQUEUE_NONE;
321 }
322
323 /**
324 * schedule initiation of all "active" connections
325 */
326 static void schedule_autoinit(private_medcli_config_t *this)
327 {
328 enumerator_t *e;
329 char *name;
330
331 e = this->db->query(this->db, "SELECT Alias FROM Connection WHERE Active",
332 DB_TEXT);
333 if (e)
334 {
335 while (e->enumerate(e, &name))
336 {
337 peer_cfg_t *peer_cfg;
338
339 peer_cfg = get_peer_cfg_by_name(this, name);
340 if (peer_cfg)
341 {
342 /* schedule asynchronous initiation job */
343 lib->processor->queue_job(lib->processor,
344 (job_t*)callback_job_create(
345 (callback_job_cb_t)initiate_config,
346 peer_cfg, (void*)peer_cfg->destroy, NULL));
347 }
348 }
349 e->destroy(e);
350 }
351 }
352
353 METHOD(medcli_config_t, destroy, void,
354 private_medcli_config_t *this)
355 {
356 this->ike->destroy(this->ike);
357 free(this);
358 }
359
360 /**
361 * Described in header.
362 */
363 medcli_config_t *medcli_config_create(database_t *db)
364 {
365 private_medcli_config_t *this;
366
367 INIT(this,
368 .public = {
369 .backend = {
370 .create_peer_cfg_enumerator = _create_peer_cfg_enumerator,
371 .create_ike_cfg_enumerator = _create_ike_cfg_enumerator,
372 .get_peer_cfg_by_name = _get_peer_cfg_by_name,
373 },
374 .destroy = _destroy,
375 },
376 .db = db,
377 .rekey = lib->settings->get_time(lib->settings, "medcli.rekey", 1200),
378 .dpd = lib->settings->get_time(lib->settings, "medcli.dpd", 300),
379 .ike = ike_cfg_create(IKEV2, FALSE, FALSE, "0.0.0.0",
380 charon->socket->get_port(charon->socket, FALSE),
381 "0.0.0.0", IKEV2_UDP_PORT,
382 FRAGMENTATION_NO, 0),
383 );
384 this->ike->add_proposal(this->ike, proposal_create_default(PROTO_IKE));
385
386 schedule_autoinit(this);
387
388 return &this->public;
389 }