Add reqid field and getter function to child_cfg_t.
[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 /**
92 * implements backend_t.get_peer_cfg_by_name.
93 */
94 static peer_cfg_t *get_peer_cfg_by_name(private_medcli_config_t *this, char *name)
95 {
96 enumerator_t *e;
97 peer_cfg_t *peer_cfg, *med_cfg;
98 auth_cfg_t *auth;
99 ike_cfg_t *ike_cfg;
100 child_cfg_t *child_cfg;
101 chunk_t me, other;
102 char *address, *local_net, *remote_net;
103 lifetime_cfg_t lifetime = {
104 .time = {
105 .life = this->rekey * 60 + this->rekey,
106 .rekey = this->rekey,
107 .jitter = this->rekey
108 }
109 };
110
111 /* query mediation server config:
112 * - build ike_cfg/peer_cfg for mediation connection on-the-fly
113 */
114 e = this->db->query(this->db,
115 "SELECT Address, ClientConfig.KeyId, MediationServerConfig.KeyId "
116 "FROM MediationServerConfig JOIN ClientConfig",
117 DB_TEXT, DB_BLOB, DB_BLOB);
118 if (!e || !e->enumerate(e, &address, &me, &other))
119 {
120 DESTROY_IF(e);
121 return NULL;
122 }
123 ike_cfg = ike_cfg_create(FALSE, FALSE,
124 "0.0.0.0", IKEV2_UDP_PORT, address, IKEV2_UDP_PORT);
125 ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE));
126 med_cfg = peer_cfg_create(
127 "mediation", 2, ike_cfg,
128 CERT_NEVER_SEND, UNIQUE_REPLACE,
129 1, this->rekey*60, 0, /* keytries, rekey, reauth */
130 this->rekey*5, this->rekey*3, /* jitter, overtime */
131 TRUE, this->dpd, /* mobike, dpddelay */
132 NULL, NULL, /* vip, pool */
133 TRUE, NULL, NULL); /* mediation, med by, peer id */
134 e->destroy(e);
135
136 auth = auth_cfg_create();
137 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
138 auth->add(auth, AUTH_RULE_IDENTITY,
139 identification_create_from_encoding(ID_KEY_ID, me));
140 med_cfg->add_auth_cfg(med_cfg, auth, TRUE);
141 auth = auth_cfg_create();
142 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
143 auth->add(auth, AUTH_RULE_IDENTITY,
144 identification_create_from_encoding(ID_KEY_ID, other));
145 med_cfg->add_auth_cfg(med_cfg, auth, FALSE);
146
147 /* query mediated config:
148 * - use any-any ike_cfg
149 * - build peer_cfg on-the-fly using med_cfg
150 * - add a child_cfg
151 */
152 e = this->db->query(this->db,
153 "SELECT ClientConfig.KeyId, Connection.KeyId, "
154 "Connection.LocalSubnet, Connection.RemoteSubnet "
155 "FROM ClientConfig JOIN Connection "
156 "WHERE Active AND Alias = ?", DB_TEXT, name,
157 DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
158 if (!e || !e->enumerate(e, &me, &other, &local_net, &remote_net))
159 {
160 DESTROY_IF(e);
161 return NULL;
162 }
163 peer_cfg = peer_cfg_create(
164 name, 2, this->ike->get_ref(this->ike),
165 CERT_NEVER_SEND, UNIQUE_REPLACE,
166 1, this->rekey*60, 0, /* keytries, rekey, reauth */
167 this->rekey*5, this->rekey*3, /* jitter, overtime */
168 TRUE, this->dpd, /* mobike, dpddelay */
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,
185 MODE_TUNNEL, ACTION_NONE, ACTION_NONE, FALSE, 0, 0);
186 child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
187 child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
188 child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
189 peer_cfg->add_child_cfg(peer_cfg, child_cfg);
190 e->destroy(e);
191 return peer_cfg;
192 }
193
194 /**
195 * Implementation of backend_t.create_ike_cfg_enumerator.
196 */
197 static enumerator_t* create_ike_cfg_enumerator(private_medcli_config_t *this,
198 host_t *me, host_t *other)
199 {
200 return enumerator_create_single(this->ike, NULL);
201 }
202
203 typedef struct {
204 /** implements enumerator */
205 enumerator_t public;
206 /** inner SQL enumerator */
207 enumerator_t *inner;
208 /** currently enumerated peer config */
209 peer_cfg_t *current;
210 /** ike cfg to use in peer cfg */
211 ike_cfg_t *ike;
212 /** rekey time */
213 int rekey;
214 /** dpd time */
215 int dpd;
216 } peer_enumerator_t;
217
218 /**
219 * Implementation of peer_enumerator_t.public.enumerate
220 */
221 static bool peer_enumerator_enumerate(peer_enumerator_t *this, peer_cfg_t **cfg)
222 {
223 char *name, *local_net, *remote_net;
224 chunk_t me, other;
225 child_cfg_t *child_cfg;
226 auth_cfg_t *auth;
227 lifetime_cfg_t lifetime = {
228 .time = {
229 .life = this->rekey * 60 + this->rekey,
230 .rekey = this->rekey,
231 .jitter = this->rekey
232 }
233 };
234
235 DESTROY_IF(this->current);
236 if (!this->inner->enumerate(this->inner, &name, &me, &other,
237 &local_net, &remote_net))
238 {
239 this->current = NULL;
240 return FALSE;
241 }
242 this->current = peer_cfg_create(
243 name, 2, this->ike->get_ref(this->ike),
244 CERT_NEVER_SEND, UNIQUE_REPLACE,
245 1, this->rekey*60, 0, /* keytries, rekey, reauth */
246 this->rekey*5, this->rekey*3, /* jitter, overtime */
247 TRUE, this->dpd, /* mobike, dpddelay */
248 NULL, NULL, /* vip, pool */
249 FALSE, NULL, NULL); /* mediation, med by, peer id */
250
251 auth = auth_cfg_create();
252 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
253 auth->add(auth, AUTH_RULE_IDENTITY,
254 identification_create_from_encoding(ID_KEY_ID, me));
255 this->current->add_auth_cfg(this->current, auth, TRUE);
256 auth = auth_cfg_create();
257 auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
258 auth->add(auth, AUTH_RULE_IDENTITY,
259 identification_create_from_encoding(ID_KEY_ID, other));
260 this->current->add_auth_cfg(this->current, auth, FALSE);
261
262 child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE, MODE_TUNNEL,
263 ACTION_NONE, ACTION_NONE, FALSE, 0, 0);
264 child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
265 child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
266 child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
267 this->current->add_child_cfg(this->current, child_cfg);
268 *cfg = this->current;
269 return TRUE;
270 }
271
272 /**
273 * Implementation of peer_enumerator_t.public.destroy
274 */
275 static void peer_enumerator_destroy(peer_enumerator_t *this)
276 {
277 DESTROY_IF(this->current);
278 this->inner->destroy(this->inner);
279 free(this);
280 }
281
282 /**
283 * Implementation of backend_t.create_peer_cfg_enumerator.
284 */
285 static enumerator_t* create_peer_cfg_enumerator(private_medcli_config_t *this,
286 identification_t *me,
287 identification_t *other)
288 {
289 peer_enumerator_t *e = malloc_thing(peer_enumerator_t);
290
291 e->current = NULL;
292 e->ike = this->ike;
293 e->rekey = this->rekey;
294 e->dpd = this->dpd;
295 e->public.enumerate = (void*)peer_enumerator_enumerate;
296 e->public.destroy = (void*)peer_enumerator_destroy;
297
298 /* filter on IDs: NULL or ANY or matching KEY_ID */
299 e->inner = this->db->query(this->db,
300 "SELECT Alias, ClientConfig.KeyId, Connection.KeyId, "
301 "Connection.LocalSubnet, Connection.RemoteSubnet "
302 "FROM ClientConfig JOIN Connection "
303 "WHERE Active AND "
304 "(? OR ClientConfig.KeyId = ?) AND (? OR Connection.KeyId = ?)",
305 DB_INT, me == NULL || me->get_type(me) == ID_ANY,
306 DB_BLOB, me && me->get_type(me) == ID_KEY_ID ?
307 me->get_encoding(me) : chunk_empty,
308 DB_INT, other == NULL || other->get_type(other) == ID_ANY,
309 DB_BLOB, other && other->get_type(other) == ID_KEY_ID ?
310 other->get_encoding(other) : chunk_empty,
311 DB_TEXT, DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
312 if (!e->inner)
313 {
314 free(e);
315 return NULL;
316 }
317 return &e->public;
318 }
319
320 /**
321 * initiate a peer config
322 */
323 static job_requeue_t initiate_config(peer_cfg_t *peer_cfg)
324 {
325 enumerator_t *enumerator;
326 child_cfg_t *child_cfg = NULL;;
327
328 enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
329 enumerator->enumerate(enumerator, &child_cfg);
330 if (child_cfg)
331 {
332 child_cfg->get_ref(child_cfg);
333 peer_cfg->get_ref(peer_cfg);
334 enumerator->destroy(enumerator);
335 charon->controller->initiate(charon->controller,
336 peer_cfg, child_cfg, NULL, NULL);
337 }
338 else
339 {
340 enumerator->destroy(enumerator);
341 }
342 return JOB_REQUEUE_NONE;
343 }
344
345 /**
346 * schedule initation of all "active" connections
347 */
348 static void schedule_autoinit(private_medcli_config_t *this)
349 {
350 enumerator_t *e;
351 char *name;
352
353 e = this->db->query(this->db, "SELECT Alias FROM Connection WHERE Active",
354 DB_TEXT);
355 if (e)
356 {
357 while (e->enumerate(e, &name))
358 {
359 peer_cfg_t *peer_cfg;
360
361 peer_cfg = get_peer_cfg_by_name(this, name);
362 if (peer_cfg)
363 {
364 /* schedule asynchronous initiation job */
365 charon->processor->queue_job(charon->processor,
366 (job_t*)callback_job_create(
367 (callback_job_cb_t)initiate_config,
368 peer_cfg, (void*)peer_cfg->destroy, NULL));
369 }
370 }
371 e->destroy(e);
372 }
373 }
374
375 /**
376 * Implementation of medcli_config_t.destroy.
377 */
378 static void destroy(private_medcli_config_t *this)
379 {
380 this->ike->destroy(this->ike);
381 free(this);
382 }
383
384 /**
385 * Described in header.
386 */
387 medcli_config_t *medcli_config_create(database_t *db)
388 {
389 private_medcli_config_t *this = malloc_thing(private_medcli_config_t);
390
391 this->public.backend.create_peer_cfg_enumerator = (enumerator_t*(*)(backend_t*, identification_t *me, identification_t *other))create_peer_cfg_enumerator;
392 this->public.backend.create_ike_cfg_enumerator = (enumerator_t*(*)(backend_t*, host_t *me, host_t *other))create_ike_cfg_enumerator;
393 this->public.backend.get_peer_cfg_by_name = (peer_cfg_t* (*)(backend_t*,char*))get_peer_cfg_by_name;
394 this->public.destroy = (void(*)(medcli_config_t*))destroy;
395
396 this->db = db;
397 this->rekey = lib->settings->get_time(lib->settings, "medcli.rekey", 1200);
398 this->dpd = lib->settings->get_time(lib->settings, "medcli.dpd", 300);
399 this->ike = ike_cfg_create(FALSE, FALSE,
400 "0.0.0.0", IKEV2_UDP_PORT, "0.0.0.0", IKEV2_UDP_PORT);
401 this->ike->add_proposal(this->ike, proposal_create_default(PROTO_IKE));
402
403 schedule_autoinit(this);
404
405 return &this->public;
406 }
407