Annotation of embedaddon/strongswan/src/libcharon/plugins/medcli/medcli_config.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (C) 2008 Martin Willi
! 3: * HSR 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: * Name of the mediation connection
! 28: */
! 29: #define MEDIATION_CONN_NAME "medcli-mediation"
! 30:
! 31: /**
! 32: * Private data of an medcli_config_t object
! 33: */
! 34: struct private_medcli_config_t {
! 35:
! 36: /**
! 37: * Public part
! 38: */
! 39: medcli_config_t public;
! 40:
! 41: /**
! 42: * database connection
! 43: */
! 44: database_t *db;
! 45:
! 46: /**
! 47: * rekey time
! 48: */
! 49: int rekey;
! 50:
! 51: /**
! 52: * dpd delay
! 53: */
! 54: int dpd;
! 55:
! 56: /**
! 57: * default ike config
! 58: */
! 59: ike_cfg_t *ike;
! 60: };
! 61:
! 62: /**
! 63: * create a traffic selector from a CIDR notation string
! 64: */
! 65: static traffic_selector_t *ts_from_string(char *str)
! 66: {
! 67: if (str)
! 68: {
! 69: traffic_selector_t *ts;
! 70:
! 71: ts = traffic_selector_create_from_cidr(str, 0, 0, 65535);
! 72: if (ts)
! 73: {
! 74: return ts;
! 75: }
! 76: }
! 77: return traffic_selector_create_dynamic(0, 0, 65535);
! 78: }
! 79:
! 80: /**
! 81: * Build a mediation config
! 82: */
! 83: static peer_cfg_t *build_mediation_config(private_medcli_config_t *this,
! 84: peer_cfg_create_t *defaults)
! 85: {
! 86: enumerator_t *e;
! 87: auth_cfg_t *auth;
! 88: ike_cfg_t *ike_cfg;
! 89: peer_cfg_t *med_cfg;
! 90: ike_cfg_create_t ike = {
! 91: .version = IKEV2,
! 92: .local = "0.0.0.0",
! 93: .local_port = charon->socket->get_port(charon->socket, FALSE),
! 94: .remote_port = IKEV2_UDP_PORT,
! 95: .no_certreq = TRUE,
! 96: };
! 97: peer_cfg_create_t peer = *defaults;
! 98: chunk_t me, other;
! 99:
! 100: /* query mediation server config:
! 101: * - build ike_cfg/peer_cfg for mediation connection on-the-fly
! 102: */
! 103: e = this->db->query(this->db,
! 104: "SELECT Address, ClientConfig.KeyId, MediationServerConfig.KeyId "
! 105: "FROM MediationServerConfig JOIN ClientConfig",
! 106: DB_TEXT, DB_BLOB, DB_BLOB);
! 107: if (!e || !e->enumerate(e, &ike.remote, &me, &other))
! 108: {
! 109: DESTROY_IF(e);
! 110: return NULL;
! 111: }
! 112: ike_cfg = ike_cfg_create(&ike);
! 113: ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE));
! 114: ike_cfg->add_proposal(ike_cfg, proposal_create_default_aead(PROTO_IKE));
! 115:
! 116: peer.mediation = TRUE;
! 117: med_cfg = peer_cfg_create(MEDIATION_CONN_NAME, ike_cfg, &peer);
! 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: return med_cfg;
! 131: }
! 132:
! 133: METHOD(backend_t, get_peer_cfg_by_name, peer_cfg_t*,
! 134: private_medcli_config_t *this, char *name)
! 135: {
! 136: enumerator_t *e;
! 137: auth_cfg_t *auth;
! 138: peer_cfg_t *peer_cfg;
! 139: child_cfg_t *child_cfg;
! 140: chunk_t me, other;
! 141: char *local_net, *remote_net;
! 142: peer_cfg_create_t peer = {
! 143: .cert_policy = CERT_NEVER_SEND,
! 144: .unique = UNIQUE_REPLACE,
! 145: .keyingtries = 1,
! 146: .rekey_time = this->rekey * 60,
! 147: .jitter_time = this->rekey * 5,
! 148: .over_time = this->rekey * 3,
! 149: .dpd = this->dpd,
! 150: };
! 151: child_cfg_create_t child = {
! 152: .lifetime = {
! 153: .time = {
! 154: .life = this->rekey * 60 + this->rekey,
! 155: .rekey = this->rekey,
! 156: .jitter = this->rekey
! 157: },
! 158: },
! 159: .mode = MODE_TUNNEL,
! 160: };
! 161:
! 162: if (streq(name, "medcli-mediation"))
! 163: {
! 164: return build_mediation_config(this, &peer);
! 165: }
! 166:
! 167: /* query mediated config:
! 168: * - use any-any ike_cfg
! 169: * - build peer_cfg on-the-fly using med_cfg
! 170: * - add a child_cfg
! 171: */
! 172: e = this->db->query(this->db,
! 173: "SELECT ClientConfig.KeyId, Connection.KeyId, "
! 174: "Connection.LocalSubnet, Connection.RemoteSubnet "
! 175: "FROM ClientConfig JOIN Connection "
! 176: "WHERE Active AND Alias = ?", DB_TEXT, name,
! 177: DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
! 178: if (!e || !e->enumerate(e, &me, &other, &local_net, &remote_net))
! 179: {
! 180: DESTROY_IF(e);
! 181: return NULL;
! 182: }
! 183: peer.mediated_by = MEDIATION_CONN_NAME;
! 184: peer.peer_id = identification_create_from_encoding(ID_KEY_ID, other);
! 185: peer_cfg = peer_cfg_create(name, this->ike->get_ref(this->ike), &peer);
! 186:
! 187: auth = auth_cfg_create();
! 188: auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
! 189: auth->add(auth, AUTH_RULE_IDENTITY,
! 190: identification_create_from_encoding(ID_KEY_ID, me));
! 191: peer_cfg->add_auth_cfg(peer_cfg, auth, TRUE);
! 192: auth = auth_cfg_create();
! 193: auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
! 194: auth->add(auth, AUTH_RULE_IDENTITY,
! 195: identification_create_from_encoding(ID_KEY_ID, other));
! 196: peer_cfg->add_auth_cfg(peer_cfg, auth, FALSE);
! 197:
! 198: child_cfg = child_cfg_create(name, &child);
! 199: child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
! 200: child_cfg->add_proposal(child_cfg, proposal_create_default_aead(PROTO_ESP));
! 201: child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
! 202: child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
! 203: peer_cfg->add_child_cfg(peer_cfg, child_cfg);
! 204: e->destroy(e);
! 205: return peer_cfg;
! 206: }
! 207:
! 208: METHOD(backend_t, create_ike_cfg_enumerator, enumerator_t*,
! 209: private_medcli_config_t *this, host_t *me, host_t *other)
! 210: {
! 211: return enumerator_create_single(this->ike, NULL);
! 212: }
! 213:
! 214: typedef struct {
! 215: /** implements enumerator */
! 216: enumerator_t public;
! 217: /** inner SQL enumerator */
! 218: enumerator_t *inner;
! 219: /** currently enumerated peer config */
! 220: peer_cfg_t *current;
! 221: /** ike cfg to use in peer cfg */
! 222: ike_cfg_t *ike;
! 223: /** rekey time */
! 224: int rekey;
! 225: /** dpd time */
! 226: int dpd;
! 227: } peer_enumerator_t;
! 228:
! 229: METHOD(enumerator_t, peer_enumerator_enumerate, bool,
! 230: peer_enumerator_t *this, va_list args)
! 231: {
! 232: char *name, *local_net, *remote_net;
! 233: chunk_t me, other;
! 234: peer_cfg_t **cfg;
! 235: child_cfg_t *child_cfg;
! 236: auth_cfg_t *auth;
! 237: peer_cfg_create_t peer = {
! 238: .cert_policy = CERT_NEVER_SEND,
! 239: .unique = UNIQUE_REPLACE,
! 240: .keyingtries = 1,
! 241: .rekey_time = this->rekey * 60,
! 242: .jitter_time = this->rekey * 5,
! 243: .over_time = this->rekey * 3,
! 244: .dpd = this->dpd,
! 245: };
! 246: child_cfg_create_t child = {
! 247: .lifetime = {
! 248: .time = {
! 249: .life = this->rekey * 60 + this->rekey,
! 250: .rekey = this->rekey,
! 251: .jitter = this->rekey
! 252: },
! 253: },
! 254: .mode = MODE_TUNNEL,
! 255: };
! 256:
! 257: VA_ARGS_VGET(args, cfg);
! 258:
! 259: DESTROY_IF(this->current);
! 260: if (!this->inner->enumerate(this->inner, &name, &me, &other,
! 261: &local_net, &remote_net))
! 262: {
! 263: this->current = NULL;
! 264: return FALSE;
! 265: }
! 266: this->current = peer_cfg_create(name, this->ike->get_ref(this->ike), &peer);
! 267:
! 268: auth = auth_cfg_create();
! 269: auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
! 270: auth->add(auth, AUTH_RULE_IDENTITY,
! 271: identification_create_from_encoding(ID_KEY_ID, me));
! 272: this->current->add_auth_cfg(this->current, auth, TRUE);
! 273: auth = auth_cfg_create();
! 274: auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
! 275: auth->add(auth, AUTH_RULE_IDENTITY,
! 276: identification_create_from_encoding(ID_KEY_ID, other));
! 277: this->current->add_auth_cfg(this->current, auth, FALSE);
! 278:
! 279: child_cfg = child_cfg_create(name, &child);
! 280: child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
! 281: child_cfg->add_proposal(child_cfg, proposal_create_default_aead(PROTO_ESP));
! 282: child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
! 283: child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
! 284: this->current->add_child_cfg(this->current, child_cfg);
! 285: *cfg = this->current;
! 286: return TRUE;
! 287: }
! 288:
! 289: METHOD(enumerator_t, peer_enumerator_destroy, void,
! 290: peer_enumerator_t *this)
! 291: {
! 292: DESTROY_IF(this->current);
! 293: this->inner->destroy(this->inner);
! 294: free(this);
! 295: }
! 296:
! 297: METHOD(backend_t, create_peer_cfg_enumerator, enumerator_t*,
! 298: private_medcli_config_t *this, identification_t *me,
! 299: identification_t *other)
! 300: {
! 301: peer_enumerator_t *e;
! 302:
! 303: INIT(e,
! 304: .public = {
! 305: .enumerate = enumerator_enumerate_default,
! 306: .venumerate = _peer_enumerator_enumerate,
! 307: .destroy = _peer_enumerator_destroy,
! 308: },
! 309: .ike = this->ike,
! 310: .rekey = this->rekey,
! 311: .dpd = this->dpd,
! 312: );
! 313:
! 314: /* filter on IDs: NULL or ANY or matching KEY_ID */
! 315: e->inner = this->db->query(this->db,
! 316: "SELECT Alias, ClientConfig.KeyId, Connection.KeyId, "
! 317: "Connection.LocalSubnet, Connection.RemoteSubnet "
! 318: "FROM ClientConfig JOIN Connection "
! 319: "WHERE Active AND "
! 320: "(? OR ClientConfig.KeyId = ?) AND (? OR Connection.KeyId = ?)",
! 321: DB_INT, me == NULL || me->get_type(me) == ID_ANY,
! 322: DB_BLOB, me && me->get_type(me) == ID_KEY_ID ?
! 323: me->get_encoding(me) : chunk_empty,
! 324: DB_INT, other == NULL || other->get_type(other) == ID_ANY,
! 325: DB_BLOB, other && other->get_type(other) == ID_KEY_ID ?
! 326: other->get_encoding(other) : chunk_empty,
! 327: DB_TEXT, DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
! 328: if (!e->inner)
! 329: {
! 330: free(e);
! 331: return NULL;
! 332: }
! 333: return &e->public;
! 334: }
! 335:
! 336: /**
! 337: * initiate a peer config
! 338: */
! 339: static job_requeue_t initiate_config(peer_cfg_t *peer_cfg)
! 340: {
! 341: enumerator_t *enumerator;
! 342: child_cfg_t *child_cfg = NULL;;
! 343:
! 344: enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
! 345: enumerator->enumerate(enumerator, &child_cfg);
! 346: if (child_cfg)
! 347: {
! 348: child_cfg->get_ref(child_cfg);
! 349: peer_cfg->get_ref(peer_cfg);
! 350: enumerator->destroy(enumerator);
! 351: charon->controller->initiate(charon->controller,
! 352: peer_cfg, child_cfg, NULL, NULL, 0, FALSE);
! 353: }
! 354: else
! 355: {
! 356: enumerator->destroy(enumerator);
! 357: }
! 358: return JOB_REQUEUE_NONE;
! 359: }
! 360:
! 361: /**
! 362: * schedule initiation of all "active" connections
! 363: */
! 364: static void schedule_autoinit(private_medcli_config_t *this)
! 365: {
! 366: enumerator_t *e;
! 367: char *name;
! 368:
! 369: e = this->db->query(this->db, "SELECT Alias FROM Connection WHERE Active",
! 370: DB_TEXT);
! 371: if (e)
! 372: {
! 373: while (e->enumerate(e, &name))
! 374: {
! 375: peer_cfg_t *peer_cfg;
! 376:
! 377: peer_cfg = get_peer_cfg_by_name(this, name);
! 378: if (peer_cfg)
! 379: {
! 380: /* schedule asynchronous initiation job */
! 381: lib->processor->queue_job(lib->processor,
! 382: (job_t*)callback_job_create(
! 383: (callback_job_cb_t)initiate_config,
! 384: peer_cfg, (void*)peer_cfg->destroy, NULL));
! 385: }
! 386: }
! 387: e->destroy(e);
! 388: }
! 389: }
! 390:
! 391: METHOD(medcli_config_t, destroy, void,
! 392: private_medcli_config_t *this)
! 393: {
! 394: this->ike->destroy(this->ike);
! 395: free(this);
! 396: }
! 397:
! 398: /**
! 399: * Described in header.
! 400: */
! 401: medcli_config_t *medcli_config_create(database_t *db)
! 402: {
! 403: private_medcli_config_t *this;
! 404: ike_cfg_create_t ike = {
! 405: .version = IKEV2,
! 406: .local = "0.0.0.0",
! 407: .local_port = charon->socket->get_port(charon->socket, FALSE),
! 408: .remote = "0.0.0.0",
! 409: .remote_port = IKEV2_UDP_PORT,
! 410: .no_certreq = TRUE,
! 411: };
! 412:
! 413: INIT(this,
! 414: .public = {
! 415: .backend = {
! 416: .create_peer_cfg_enumerator = _create_peer_cfg_enumerator,
! 417: .create_ike_cfg_enumerator = _create_ike_cfg_enumerator,
! 418: .get_peer_cfg_by_name = _get_peer_cfg_by_name,
! 419: },
! 420: .destroy = _destroy,
! 421: },
! 422: .db = db,
! 423: .rekey = lib->settings->get_time(lib->settings, "medcli.rekey", 1200),
! 424: .dpd = lib->settings->get_time(lib->settings, "medcli.dpd", 300),
! 425: .ike = ike_cfg_create(&ike),
! 426: );
! 427: this->ike->add_proposal(this->ike, proposal_create_default(PROTO_IKE));
! 428: this->ike->add_proposal(this->ike, proposal_create_default_aead(PROTO_IKE));
! 429:
! 430: schedule_autoinit(this);
! 431:
! 432: return &this->public;
! 433: }
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