summaryrefslogtreecommitdiff
path: root/src/libcharon/plugins/medcli/medcli_config.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/libcharon/plugins/medcli/medcli_config.c')
-rw-r--r--src/libcharon/plugins/medcli/medcli_config.c407
1 files changed, 407 insertions, 0 deletions
diff --git a/src/libcharon/plugins/medcli/medcli_config.c b/src/libcharon/plugins/medcli/medcli_config.c
new file mode 100644
index 000000000..e355d55f7
--- /dev/null
+++ b/src/libcharon/plugins/medcli/medcli_config.c
@@ -0,0 +1,407 @@
+/*
+ * Copyright (C) 2008 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+#define _GNU_SOURCE
+#include <string.h>
+
+#include "medcli_config.h"
+
+#include <daemon.h>
+#include <processing/jobs/callback_job.h>
+
+typedef struct private_medcli_config_t private_medcli_config_t;
+
+/**
+ * Private data of an medcli_config_t object
+ */
+struct private_medcli_config_t {
+
+ /**
+ * Public part
+ */
+ medcli_config_t public;
+
+ /**
+ * database connection
+ */
+ database_t *db;
+
+ /**
+ * rekey time
+ */
+ int rekey;
+
+ /**
+ * dpd delay
+ */
+ int dpd;
+
+ /**
+ * default ike config
+ */
+ ike_cfg_t *ike;
+};
+
+/**
+ * create a traffic selector from a CIDR notation string
+ */
+static traffic_selector_t *ts_from_string(char *str)
+{
+ if (str)
+ {
+ int netbits = 32;
+ host_t *net;
+ char *pos;
+
+ str = strdupa(str);
+ pos = strchr(str, '/');
+ if (pos)
+ {
+ *pos++ = '\0';
+ netbits = atoi(pos);
+ }
+ else
+ {
+ if (strchr(str, ':'))
+ {
+ netbits = 128;
+ }
+ }
+ net = host_create_from_string(str, 0);
+ if (net)
+ {
+ return traffic_selector_create_from_subnet(net, netbits, 0, 0);
+ }
+ }
+ return traffic_selector_create_dynamic(0, 0, 65535);
+}
+
+/**
+ * implements backend_t.get_peer_cfg_by_name.
+ */
+static peer_cfg_t *get_peer_cfg_by_name(private_medcli_config_t *this, char *name)
+{
+ enumerator_t *e;
+ peer_cfg_t *peer_cfg, *med_cfg;
+ auth_cfg_t *auth;
+ ike_cfg_t *ike_cfg;
+ child_cfg_t *child_cfg;
+ chunk_t me, other;
+ char *address, *local_net, *remote_net;
+ lifetime_cfg_t lifetime = {
+ .time = {
+ .life = this->rekey * 60 + this->rekey,
+ .rekey = this->rekey,
+ .jitter = this->rekey
+ }
+ };
+
+ /* query mediation server config:
+ * - build ike_cfg/peer_cfg for mediation connection on-the-fly
+ */
+ e = this->db->query(this->db,
+ "SELECT Address, ClientConfig.KeyId, MediationServerConfig.KeyId "
+ "FROM MediationServerConfig JOIN ClientConfig",
+ DB_TEXT, DB_BLOB, DB_BLOB);
+ if (!e || !e->enumerate(e, &address, &me, &other))
+ {
+ DESTROY_IF(e);
+ return NULL;
+ }
+ ike_cfg = ike_cfg_create(FALSE, FALSE,
+ "0.0.0.0", IKEV2_UDP_PORT, address, IKEV2_UDP_PORT);
+ ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE));
+ med_cfg = peer_cfg_create(
+ "mediation", 2, ike_cfg,
+ CERT_NEVER_SEND, UNIQUE_REPLACE,
+ 1, this->rekey*60, 0, /* keytries, rekey, reauth */
+ this->rekey*5, this->rekey*3, /* jitter, overtime */
+ TRUE, this->dpd, /* mobike, dpddelay */
+ NULL, NULL, /* vip, pool */
+ TRUE, NULL, NULL); /* mediation, med by, peer id */
+ e->destroy(e);
+
+ auth = auth_cfg_create();
+ auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+ auth->add(auth, AUTH_RULE_IDENTITY,
+ identification_create_from_encoding(ID_KEY_ID, me));
+ med_cfg->add_auth_cfg(med_cfg, auth, TRUE);
+ auth = auth_cfg_create();
+ auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+ auth->add(auth, AUTH_RULE_IDENTITY,
+ identification_create_from_encoding(ID_KEY_ID, other));
+ med_cfg->add_auth_cfg(med_cfg, auth, FALSE);
+
+ /* query mediated config:
+ * - use any-any ike_cfg
+ * - build peer_cfg on-the-fly using med_cfg
+ * - add a child_cfg
+ */
+ e = this->db->query(this->db,
+ "SELECT ClientConfig.KeyId, Connection.KeyId, "
+ "Connection.LocalSubnet, Connection.RemoteSubnet "
+ "FROM ClientConfig JOIN Connection "
+ "WHERE Active AND Alias = ?", DB_TEXT, name,
+ DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
+ if (!e || !e->enumerate(e, &me, &other, &local_net, &remote_net))
+ {
+ DESTROY_IF(e);
+ return NULL;
+ }
+ peer_cfg = peer_cfg_create(
+ name, 2, this->ike->get_ref(this->ike),
+ CERT_NEVER_SEND, UNIQUE_REPLACE,
+ 1, this->rekey*60, 0, /* keytries, rekey, reauth */
+ this->rekey*5, this->rekey*3, /* jitter, overtime */
+ TRUE, this->dpd, /* mobike, dpddelay */
+ NULL, NULL, /* vip, pool */
+ FALSE, med_cfg, /* mediation, med by */
+ identification_create_from_encoding(ID_KEY_ID, other));
+
+ auth = auth_cfg_create();
+ auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+ auth->add(auth, AUTH_RULE_IDENTITY,
+ identification_create_from_encoding(ID_KEY_ID, me));
+ peer_cfg->add_auth_cfg(peer_cfg, auth, TRUE);
+ auth = auth_cfg_create();
+ auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+ auth->add(auth, AUTH_RULE_IDENTITY,
+ identification_create_from_encoding(ID_KEY_ID, other));
+ peer_cfg->add_auth_cfg(peer_cfg, auth, FALSE);
+
+ child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE,
+ MODE_TUNNEL, ACTION_NONE, ACTION_NONE, FALSE, 0);
+ child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
+ child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
+ child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
+ peer_cfg->add_child_cfg(peer_cfg, child_cfg);
+ e->destroy(e);
+ return peer_cfg;
+}
+
+/**
+ * Implementation of backend_t.create_ike_cfg_enumerator.
+ */
+static enumerator_t* create_ike_cfg_enumerator(private_medcli_config_t *this,
+ host_t *me, host_t *other)
+{
+ return enumerator_create_single(this->ike, NULL);
+}
+
+typedef struct {
+ /** implements enumerator */
+ enumerator_t public;
+ /** inner SQL enumerator */
+ enumerator_t *inner;
+ /** currently enumerated peer config */
+ peer_cfg_t *current;
+ /** ike cfg to use in peer cfg */
+ ike_cfg_t *ike;
+ /** rekey time */
+ int rekey;
+ /** dpd time */
+ int dpd;
+} peer_enumerator_t;
+
+/**
+ * Implementation of peer_enumerator_t.public.enumerate
+ */
+static bool peer_enumerator_enumerate(peer_enumerator_t *this, peer_cfg_t **cfg)
+{
+ char *name, *local_net, *remote_net;
+ chunk_t me, other;
+ child_cfg_t *child_cfg;
+ auth_cfg_t *auth;
+ lifetime_cfg_t lifetime = {
+ .time = {
+ .life = this->rekey * 60 + this->rekey,
+ .rekey = this->rekey,
+ .jitter = this->rekey
+ }
+ };
+
+ DESTROY_IF(this->current);
+ if (!this->inner->enumerate(this->inner, &name, &me, &other,
+ &local_net, &remote_net))
+ {
+ this->current = NULL;
+ return FALSE;
+ }
+ this->current = peer_cfg_create(
+ name, 2, this->ike->get_ref(this->ike),
+ CERT_NEVER_SEND, UNIQUE_REPLACE,
+ 1, this->rekey*60, 0, /* keytries, rekey, reauth */
+ this->rekey*5, this->rekey*3, /* jitter, overtime */
+ TRUE, this->dpd, /* mobike, dpddelay */
+ NULL, NULL, /* vip, pool */
+ FALSE, NULL, NULL); /* mediation, med by, peer id */
+
+ auth = auth_cfg_create();
+ auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+ auth->add(auth, AUTH_RULE_IDENTITY,
+ identification_create_from_encoding(ID_KEY_ID, me));
+ this->current->add_auth_cfg(this->current, auth, TRUE);
+ auth = auth_cfg_create();
+ auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
+ auth->add(auth, AUTH_RULE_IDENTITY,
+ identification_create_from_encoding(ID_KEY_ID, other));
+ this->current->add_auth_cfg(this->current, auth, FALSE);
+
+ child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE, MODE_TUNNEL,
+ ACTION_NONE, ACTION_NONE, FALSE, 0);
+ child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
+ child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net));
+ child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net));
+ this->current->add_child_cfg(this->current, child_cfg);
+ *cfg = this->current;
+ return TRUE;
+}
+
+/**
+ * Implementation of peer_enumerator_t.public.destroy
+ */
+static void peer_enumerator_destroy(peer_enumerator_t *this)
+{
+ DESTROY_IF(this->current);
+ this->inner->destroy(this->inner);
+ free(this);
+}
+
+/**
+ * Implementation of backend_t.create_peer_cfg_enumerator.
+ */
+static enumerator_t* create_peer_cfg_enumerator(private_medcli_config_t *this,
+ identification_t *me,
+ identification_t *other)
+{
+ peer_enumerator_t *e = malloc_thing(peer_enumerator_t);
+
+ e->current = NULL;
+ e->ike = this->ike;
+ e->rekey = this->rekey;
+ e->dpd = this->dpd;
+ e->public.enumerate = (void*)peer_enumerator_enumerate;
+ e->public.destroy = (void*)peer_enumerator_destroy;
+
+ /* filter on IDs: NULL or ANY or matching KEY_ID */
+ e->inner = this->db->query(this->db,
+ "SELECT Alias, ClientConfig.KeyId, Connection.KeyId, "
+ "Connection.LocalSubnet, Connection.RemoteSubnet "
+ "FROM ClientConfig JOIN Connection "
+ "WHERE Active AND "
+ "(? OR ClientConfig.KeyId = ?) AND (? OR Connection.KeyId = ?)",
+ DB_INT, me == NULL || me->get_type(me) == ID_ANY,
+ DB_BLOB, me && me->get_type(me) == ID_KEY_ID ?
+ me->get_encoding(me) : chunk_empty,
+ DB_INT, other == NULL || other->get_type(other) == ID_ANY,
+ DB_BLOB, other && other->get_type(other) == ID_KEY_ID ?
+ other->get_encoding(other) : chunk_empty,
+ DB_TEXT, DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT);
+ if (!e->inner)
+ {
+ free(e);
+ return NULL;
+ }
+ return &e->public;
+}
+
+/**
+ * initiate a peer config
+ */
+static job_requeue_t initiate_config(peer_cfg_t *peer_cfg)
+{
+ enumerator_t *enumerator;
+ child_cfg_t *child_cfg = NULL;;
+
+ enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
+ enumerator->enumerate(enumerator, &child_cfg);
+ if (child_cfg)
+ {
+ child_cfg->get_ref(child_cfg);
+ peer_cfg->get_ref(peer_cfg);
+ enumerator->destroy(enumerator);
+ charon->controller->initiate(charon->controller,
+ peer_cfg, child_cfg, NULL, NULL);
+ }
+ else
+ {
+ enumerator->destroy(enumerator);
+ }
+ return JOB_REQUEUE_NONE;
+}
+
+/**
+ * schedule initation of all "active" connections
+ */
+static void schedule_autoinit(private_medcli_config_t *this)
+{
+ enumerator_t *e;
+ char *name;
+
+ e = this->db->query(this->db, "SELECT Alias FROM Connection WHERE Active",
+ DB_TEXT);
+ if (e)
+ {
+ while (e->enumerate(e, &name))
+ {
+ peer_cfg_t *peer_cfg;
+
+ peer_cfg = get_peer_cfg_by_name(this, name);
+ if (peer_cfg)
+ {
+ /* schedule asynchronous initiation job */
+ charon->processor->queue_job(charon->processor,
+ (job_t*)callback_job_create(
+ (callback_job_cb_t)initiate_config,
+ peer_cfg, (void*)peer_cfg->destroy, NULL));
+ }
+ }
+ e->destroy(e);
+ }
+}
+
+/**
+ * Implementation of medcli_config_t.destroy.
+ */
+static void destroy(private_medcli_config_t *this)
+{
+ this->ike->destroy(this->ike);
+ free(this);
+}
+
+/**
+ * Described in header.
+ */
+medcli_config_t *medcli_config_create(database_t *db)
+{
+ private_medcli_config_t *this = malloc_thing(private_medcli_config_t);
+
+ this->public.backend.create_peer_cfg_enumerator = (enumerator_t*(*)(backend_t*, identification_t *me, identification_t *other))create_peer_cfg_enumerator;
+ this->public.backend.create_ike_cfg_enumerator = (enumerator_t*(*)(backend_t*, host_t *me, host_t *other))create_ike_cfg_enumerator;
+ this->public.backend.get_peer_cfg_by_name = (peer_cfg_t* (*)(backend_t*,char*))get_peer_cfg_by_name;
+ this->public.destroy = (void(*)(medcli_config_t*))destroy;
+
+ this->db = db;
+ this->rekey = lib->settings->get_time(lib->settings, "medcli.rekey", 1200);
+ this->dpd = lib->settings->get_time(lib->settings, "medcli.dpd", 300);
+ this->ike = ike_cfg_create(FALSE, FALSE,
+ "0.0.0.0", IKEV2_UDP_PORT, "0.0.0.0", IKEV2_UDP_PORT);
+ this->ike->add_proposal(this->ike, proposal_create_default(PROTO_IKE));
+
+ schedule_autoinit(this);
+
+ return &this->public;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-20 08:46:04 +0000