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-rw-r--r--src/charon/plugins/stroke/Makefile.am1
-rw-r--r--src/charon/plugins/stroke/stroke_attribute.c318
-rw-r--r--src/charon/plugins/stroke/stroke_attribute.h67
-rw-r--r--src/charon/plugins/stroke/stroke_socket.c12
4 files changed, 398 insertions, 0 deletions
diff --git a/src/charon/plugins/stroke/Makefile.am b/src/charon/plugins/stroke/Makefile.am
index c7312501b..36e540665 100644
--- a/src/charon/plugins/stroke/Makefile.am
+++ b/src/charon/plugins/stroke/Makefile.am
@@ -11,6 +11,7 @@ libcharon_stroke_la_SOURCES = stroke_plugin.h stroke_plugin.c \
stroke_control.h stroke_control.c \
stroke_cred.h stroke_cred.c \
stroke_ca.h stroke_ca.c \
+ stroke_attribute.h stroke_attribute.c \
stroke_list.h stroke_list.c \
stroke_shared_key.h stroke_shared_key.c
diff --git a/src/charon/plugins/stroke/stroke_attribute.c b/src/charon/plugins/stroke/stroke_attribute.c
new file mode 100644
index 000000000..9fdd68a50
--- /dev/null
+++ b/src/charon/plugins/stroke/stroke_attribute.c
@@ -0,0 +1,318 @@
+/*
+ * 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.
+ *
+ * $Id$
+ */
+
+#include "stroke_attribute.h"
+
+#include <daemon.h>
+#include <utils/linked_list.h>
+#include <utils/mutex.h>
+
+#define POOL_LIMIT 16
+
+typedef struct private_stroke_attribute_t private_stroke_attribute_t;
+
+/**
+ * private data of stroke_attribute
+ */
+struct private_stroke_attribute_t {
+
+ /**
+ * public functions
+ */
+ stroke_attribute_t public;
+
+ /**
+ * list of pools, contains pool_t
+ */
+ linked_list_t *pools;
+
+ /**
+ * mutex to lock access to pools
+ */
+ mutex_t *mutex;
+};
+
+typedef struct {
+ /** name of the pool */
+ char *name;
+ /** base address of the pool */
+ host_t *base;
+ /** number of entries in the pool */
+ int count;
+ /** array of in-use flags, TODO: use bit fields */
+ u_int8_t *in_use;
+} pool_t;
+
+/**
+ * destroy a pool_t
+ */
+static void pool_destroy(pool_t *this)
+{
+ this->base->destroy(this->base);
+ free(this->name);
+ free(this->in_use);
+ free(this);
+}
+
+/**
+ * find a pool by name
+ */
+static pool_t *find_pool(private_stroke_attribute_t *this, char *name)
+{
+ enumerator_t *enumerator;
+ pool_t *current, *found = NULL;
+
+ enumerator = this->pools->create_enumerator(this->pools);
+ while (enumerator->enumerate(enumerator, &current))
+ {
+ if (streq(name, current->name))
+ {
+ found = current;
+ break;
+ }
+ }
+ enumerator->destroy(enumerator);
+ return found;
+}
+
+/**
+ * convert an pool offset to an address
+ */
+host_t* offset2host(pool_t *pool, int offset)
+{
+ chunk_t addr;
+ host_t *host;
+ u_int32_t *pos;
+
+ if (offset > pool->count)
+ {
+ return NULL;
+ }
+
+ addr = chunk_clone(pool->base->get_address(pool->base));
+ if (pool->base->get_family(pool->base) == AF_INET6)
+ {
+ pos = (u_int32_t*)(addr.ptr + 12);
+ }
+ else
+ {
+ pos = (u_int32_t*)addr.ptr;
+ }
+ *pos = htonl(offset + ntohl(*pos));
+ host = host_create_from_chunk(pool->base->get_family(pool->base), addr, 0);
+ free(addr.ptr);
+ return host;
+}
+
+/**
+ * convert a host to a pool offset
+ */
+int host2offset(pool_t *pool, host_t *addr)
+{
+ chunk_t host, base;
+ u_int32_t hosti, basei;
+
+ if (addr->get_family(addr) != pool->base->get_family(pool->base))
+ {
+ return -1;
+ }
+ host = addr->get_address(addr);
+ base = pool->base->get_address(pool->base);
+ if (addr->get_family(addr) == AF_INET6)
+ {
+ /* only look at last /32 block */
+ if (!memeq(host.ptr, base.ptr, 12))
+ {
+ return -1;
+ }
+ host = chunk_skip(host, 12);
+ base = chunk_skip(base, 12);
+ }
+ hosti = ntohl(*(u_int32_t*)(host.ptr));
+ basei = ntohl(*(u_int32_t*)(base.ptr));
+ if (hosti > basei + pool->count)
+ {
+ return -1;
+ }
+ return hosti - basei;
+}
+
+/**
+ * Implementation of attribute_provider_t.acquire_address
+ */
+static host_t* acquire_address(private_stroke_attribute_t *this,
+ char *name, identification_t *id,
+ auth_info_t *auth, host_t *requested)
+{
+ pool_t *pool;
+ host_t *host = NULL;
+ int i;
+
+ this->mutex->lock(this->mutex);
+ pool = find_pool(this, name);
+ if (pool)
+ {
+ if (requested && !requested->is_anyaddr(requested))
+ {
+ i = host2offset(pool, requested);
+ if (i >= 0 && !pool->in_use[i])
+ {
+ pool->in_use[i] = TRUE;
+ host = requested->clone(requested);
+ }
+ }
+ if (!host)
+ {
+ for (i = 0; i < pool->count; i++)
+ {
+ if (!pool->in_use[i])
+ {
+ pool->in_use[i] = TRUE;
+ host = offset2host(pool, i);
+ break;
+ }
+ }
+ }
+ }
+ this->mutex->unlock(this->mutex);
+ return host;
+}
+
+/**
+ * Implementation of attribute_provider_t.release_address
+ */
+static bool release_address(private_stroke_attribute_t *this,
+ char *name, host_t *address)
+{
+ pool_t *pool;
+ bool found = FALSE;
+ int i;
+
+ this->mutex->lock(this->mutex);
+ pool = find_pool(this, name);
+ if (pool)
+ {
+ i = host2offset(pool, address);
+ if (i >= 0 && pool->in_use[i])
+ {
+ pool->in_use[i] = FALSE;
+ found =TRUE;
+ }
+ }
+ this->mutex->unlock(this->mutex);
+ return found;
+}
+
+/**
+ * Implementation of stroke_attribute_t.add_pool.
+ */
+static void add_pool(private_stroke_attribute_t *this, stroke_msg_t *msg)
+{
+ if (msg->add_conn.other.sourceip && msg->add_conn.other.sourceip_size)
+ {
+ pool_t *pool;
+ u_int32_t bits;
+ int family;
+
+ DBG1(DBG_CFG, "adding virtual IP address pool '%s': %s/%d",
+ msg->add_conn.name, msg->add_conn.other.sourceip,
+ msg->add_conn.other.sourceip_size);
+
+ pool = malloc_thing(pool_t);
+ pool->base = host_create_from_string(msg->add_conn.other.sourceip, 0);
+ if (!pool->base)
+ {
+ free(pool);
+ DBG1(DBG_CFG, "virtual IP address invalid, discarded");
+ return;
+ }
+ pool->name = strdup(msg->add_conn.name);
+ family = pool->base->get_family(pool->base);
+ bits = (family == AF_INET ? 32 : 128) - msg->add_conn.other.sourceip_size;
+ if (bits > POOL_LIMIT)
+ {
+ bits = POOL_LIMIT;
+ DBG1(DBG_CFG, "virtual IP pool to large, limiting to %s/%d",
+ msg->add_conn.other.sourceip,
+ (family == AF_INET ? 32 : 128) - bits);
+ }
+ pool->count = 1 << (bits);
+ pool->in_use = calloc(pool->count, sizeof(u_int8_t));
+
+ if (pool->count > 2)
+ { /* do not use first and last addresses of a block */
+ pool->in_use[0] = TRUE;
+ pool->in_use[pool->count-1] = TRUE;
+ }
+ this->mutex->lock(this->mutex);
+ this->pools->insert_last(this->pools, pool);
+ this->mutex->unlock(this->mutex);
+ }
+}
+
+/**
+ * Implementation of stroke_attribute_t.del_pool.
+ */
+static void del_pool(private_stroke_attribute_t *this, stroke_msg_t *msg)
+{
+ enumerator_t *enumerator;
+ pool_t *pool;
+
+ this->mutex->lock(this->mutex);
+ enumerator = this->pools->create_enumerator(this->pools);
+ while (enumerator->enumerate(enumerator, &pool))
+ {
+ if (streq(msg->del_conn.name, pool->name))
+ {
+ this->pools->remove_at(this->pools, enumerator);
+ pool_destroy(pool);
+ break;
+ }
+ }
+ enumerator->destroy(enumerator);
+ this->mutex->unlock(this->mutex);
+}
+
+/**
+ * Implementation of stroke_attribute_t.destroy
+ */
+static void destroy(private_stroke_attribute_t *this)
+{
+ this->mutex->destroy(this->mutex);
+ this->pools->destroy_function(this->pools, (void*)pool_destroy);
+ free(this);
+}
+
+/*
+ * see header file
+ */
+stroke_attribute_t *stroke_attribute_create()
+{
+ private_stroke_attribute_t *this = malloc_thing(private_stroke_attribute_t);
+
+ this->public.provider.acquire_address = (host_t*(*)(attribute_provider_t *this, char*, identification_t *,auth_info_t *, host_t *))acquire_address;
+ this->public.provider.release_address = (bool(*)(attribute_provider_t *this, char*,host_t *))release_address;
+ this->public.add_pool = (void(*)(stroke_attribute_t*, stroke_msg_t *msg))add_pool;
+ this->public.del_pool = (void(*)(stroke_attribute_t*, stroke_msg_t *msg))del_pool;
+ this->public.destroy = (void(*)(stroke_attribute_t*))destroy;
+
+ this->pools = linked_list_create();
+ this->mutex = mutex_create(MUTEX_DEFAULT);
+
+ return &this->public;
+}
+
diff --git a/src/charon/plugins/stroke/stroke_attribute.h b/src/charon/plugins/stroke/stroke_attribute.h
new file mode 100644
index 000000000..f871d5a13
--- /dev/null
+++ b/src/charon/plugins/stroke/stroke_attribute.h
@@ -0,0 +1,67 @@
+/*
+ * 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.
+ *
+ * $Id$
+ */
+
+/**
+ * @defgroup stroke_attribute stroke_attribute
+ * @{ @ingroup stroke
+ */
+
+#ifndef STROKE_ATTRIBUTE_H_
+#define STROKE_ATTRIBUTE_H_
+
+#include <stroke_msg.h>
+#include <config/attributes/attribute_provider.h>
+
+typedef struct stroke_attribute_t stroke_attribute_t;
+
+/**
+ * Stroke IKEv2 cfg attribute provider
+ */
+struct stroke_attribute_t {
+
+ /**
+ * Implements attribute provider interface
+ */
+ attribute_provider_t provider;
+
+ /**
+ * Add a virtual IP address.
+ *
+ * @param msg stroke message
+ * @param end end of stroke message that contains virtual IP.
+ */
+ void (*add_pool)(stroke_attribute_t *this, stroke_msg_t *msg);
+
+ /**
+ * Remove a virtual IP address.
+ *
+ * @param msg stroke message
+ */
+ void (*del_pool)(stroke_attribute_t *this, stroke_msg_t *msg);
+
+ /**
+ * Destroy a stroke_attribute instance.
+ */
+ void (*destroy)(stroke_attribute_t *this);
+};
+
+/**
+ * Create a stroke_attribute instance.
+ */
+stroke_attribute_t *stroke_attribute_create();
+
+#endif /* STROKE_ATTRIBUTE_H_ @}*/
diff --git a/src/charon/plugins/stroke/stroke_socket.c b/src/charon/plugins/stroke/stroke_socket.c
index 8ce757acb..9ee5a2410 100644
--- a/src/charon/plugins/stroke/stroke_socket.c
+++ b/src/charon/plugins/stroke/stroke_socket.c
@@ -33,6 +33,7 @@
#include "stroke_control.h"
#include "stroke_cred.h"
#include "stroke_ca.h"
+#include "stroke_attribute.h"
#include "stroke_list.h"
typedef struct stroke_job_context_t stroke_job_context_t;
@@ -64,6 +65,11 @@ struct private_stroke_socket_t {
stroke_config_t *config;
/**
+ * attribute provider
+ */
+ stroke_attribute_t *attribute;
+
+ /**
* controller to control daemon
*/
stroke_control_t *control;
@@ -173,6 +179,7 @@ static void stroke_add_conn(private_stroke_socket_t *this, stroke_msg_t *msg)
DBG2(DBG_CFG, " me_peerid=%s", msg->add_conn.ikeme.peerid);
this->config->add(this->config, msg);
+ this->attribute->add_pool(this->attribute, msg);
}
/**
@@ -184,6 +191,7 @@ static void stroke_del_conn(private_stroke_socket_t *this, stroke_msg_t *msg)
DBG1(DBG_CFG, "received stroke: delete connection '%s'", msg->del_conn.name);
this->config->del(this->config, msg);
+ this->attribute->del_pool(this->attribute, msg);
}
/**
@@ -542,9 +550,11 @@ static void destroy(private_stroke_socket_t *this)
charon->credentials->remove_set(charon->credentials, &this->ca->set);
charon->credentials->remove_set(charon->credentials, &this->cred->set);
charon->backends->remove_backend(charon->backends, &this->config->backend);
+ charon->attributes->remove_provider(charon->attributes, &this->attribute->provider);
this->cred->destroy(this->cred);
this->ca->destroy(this->ca);
this->config->destroy(this->config);
+ this->attribute->destroy(this->attribute);
this->control->destroy(this->control);
this->list->destroy(this->list);
free(this);
@@ -566,6 +576,7 @@ stroke_socket_t *stroke_socket_create()
}
this->cred = stroke_cred_create();
+ this->attribute = stroke_attribute_create();
this->ca = stroke_ca_create(this->cred);
this->config = stroke_config_create(this->cred);
this->control = stroke_control_create();
@@ -574,6 +585,7 @@ stroke_socket_t *stroke_socket_create()
charon->credentials->add_set(charon->credentials, &this->ca->set);
charon->credentials->add_set(charon->credentials, &this->cred->set);
charon->backends->add_backend(charon->backends, &this->config->backend);
+ charon->attributes->add_provider(charon->attributes, &this->attribute->provider);
this->job = callback_job_create((callback_job_cb_t)receive,
this, NULL, NULL);
generated by cgit v1.2.3 (git 2.25.1) at 2025-09-19 14:58:47 +0000