#include "kernel_libipsec_plugin.h"
#include "kernel_libipsec_ipsec.h"
+#include <daemon.h>
#include <ipsec.h>
#include <networking/tun_device.h>
+#include <processing/jobs/callback_job.h>
#include <utils/debug.h>
#define TUN_DEFAULT_MTU 1400
return "kernel-libipsec";
}
+/**
+ * Outbound callback
+ */
+static void send_esp(void *data, esp_packet_t *packet)
+{
+ charon->sender->send_no_marker(charon->sender, (packet_t*)packet);
+}
+
+/**
+ * Inbound callback
+ */
+static void deliver_plain(private_kernel_libipsec_plugin_t *this,
+ ip_packet_t *packet)
+{
+ this->tun->write_packet(this->tun, packet->get_encoding(packet));
+ packet->destroy(packet);
+}
+
+/**
+ * Receiver callback
+ */
+static void receiver_esp_cb(void *data, packet_t *packet)
+{
+ ipsec->processor->queue_inbound(ipsec->processor,
+ esp_packet_create_from_packet(packet));
+}
+
+/**
+ * Job handling outbound plaintext packets
+ */
+static job_requeue_t handle_plain(private_kernel_libipsec_plugin_t *this)
+{
+ chunk_t raw;
+
+ if (this->tun->read_packet(this->tun, &raw))
+ {
+ ip_packet_t *packet;
+
+ packet = ip_packet_create(raw);
+ if (packet)
+ {
+ ipsec->processor->queue_outbound(ipsec->processor, packet);
+ }
+ else
+ {
+ DBG1(DBG_KNL, "invalid IP packet read from TUN device");
+ }
+ }
+ return JOB_REQUEUE_DIRECT;
+}
+
+/**
+ * Initialize/deinitialize sender and receiver
+ */
+static bool packet_handler_cb(private_kernel_libipsec_plugin_t *this,
+ plugin_feature_t *feature, bool reg, void *arg)
+{
+ if (reg)
+ {
+ ipsec->processor->register_outbound(ipsec->processor, send_esp, NULL);
+ ipsec->processor->register_inbound(ipsec->processor,
+ (ipsec_inbound_cb_t)deliver_plain, this);
+ charon->receiver->add_esp_cb(charon->receiver,
+ (receiver_esp_cb_t)receiver_esp_cb, NULL);
+ lib->processor->queue_job(lib->processor,
+ (job_t*)callback_job_create((callback_job_cb_t)handle_plain, this,
+ NULL, (callback_job_cancel_t)return_false));
+ }
+ else
+ {
+ charon->receiver->del_esp_cb(charon->receiver,
+ (receiver_esp_cb_t)receiver_esp_cb);
+ ipsec->processor->unregister_outbound(ipsec->processor,
+ (ipsec_outbound_cb_t)send_esp);
+ ipsec->processor->unregister_inbound(ipsec->processor,
+ (ipsec_inbound_cb_t)deliver_plain);
+ }
+ return TRUE;
+}
+
METHOD(plugin_t, get_features, int,
private_kernel_libipsec_plugin_t *this, plugin_feature_t *features[])
{
static plugin_feature_t f[] = {
PLUGIN_CALLBACK(kernel_ipsec_register, kernel_libipsec_ipsec_create),
PLUGIN_PROVIDE(CUSTOM, "kernel-ipsec"),
+ PLUGIN_CALLBACK((plugin_feature_callback_t)packet_handler_cb, NULL),
+ PLUGIN_PROVIDE(CUSTOM, "kernel-libipsec-handler"),
+ PLUGIN_DEPENDS(CUSTOM, "libcharon-receiver"),
};
*features = f;
return countof(f);