aboutsummaryrefslogtreecommitdiffstats
path: root/Source/charon/network/socket.c
diff options
context:
space:
mode:
authorMartin Willi <martin@strongswan.org>2005-11-23 09:43:14 +0000
committerMartin Willi <martin@strongswan.org>2005-11-23 09:43:14 +0000
commit716abc9f8332c040df6e296104fd11ec5ac6b8cc (patch)
tree030e2efe2f5d8ecc940fd463d9250ee912714b34 /Source/charon/network/socket.c
parent7cf14676dbd2d54203b78044b2b8da38d2bfb315 (diff)
downloadstrongswan-716abc9f8332c040df6e296104fd11ec5ac6b8cc.tar.bz2
strongswan-716abc9f8332c040df6e296104fd11ec5ac6b8cc.tar.xz
- moved packet and socket in new network-package
Diffstat (limited to 'Source/charon/network/socket.c')
-rw-r--r--Source/charon/network/socket.c186
1 files changed, 186 insertions, 0 deletions
diff --git a/Source/charon/network/socket.c b/Source/charon/network/socket.c
new file mode 100644
index 000000000..fc652b557
--- /dev/null
+++ b/Source/charon/network/socket.c
@@ -0,0 +1,186 @@
+/**
+ * @file socket.c
+ *
+ * @brief management of sockets
+ *
+ * receiver reads from here, sender writes to here
+ *
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, 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.
+ */
+
+#include <pthread.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include "socket.h"
+
+#include <globals.h>
+#include <utils/allocator.h>
+#include <utils/logger_manager.h>
+
+typedef struct private_socket_s private_socket_t;
+
+struct private_socket_s{
+ /**
+ * public functions
+ */
+ socket_t public;
+
+ /**
+ * currently we only have one socket, maybe more in the future ?
+ */
+ int socket_fd;
+ /**
+ * logger for this socket
+ */
+ logger_t *logger;
+};
+
+/**
+ * implementation of socket_t.receive
+ */
+status_t receiver(private_socket_t *this, packet_t **packet)
+{
+ char buffer[MAX_PACKET];
+ int oldstate;
+ packet_t *pkt = packet_create();
+
+ /* add packet destroy handler for cancellation, enable cancellation */
+ pthread_cleanup_push((void(*)(void*))pkt->destroy, (void*)pkt);
+ pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &oldstate);
+
+ pkt->source = host_create(AF_INET, "0.0.0.0", 0);
+ pkt->destination = host_create(AF_INET, "0.0.0.0", 0);
+
+
+ this->logger->log(this->logger, CONTROL|MORE, "going to read from socket");
+ /* do the read */
+ pkt->data.len = recvfrom(this->socket_fd, buffer, MAX_PACKET, 0,
+ pkt->source->get_sockaddr(pkt->source),
+ pkt->source->get_sockaddr_len(pkt->source));
+
+ /* reset cancellation, remove packet destroy handler (without executing) */
+ pthread_setcancelstate(oldstate, NULL);
+ pthread_cleanup_pop(0);
+
+
+ /* TODO: get senders destination address, using
+ * IP_PKTINFO and recvmsg */
+
+ if (pkt->data.len < 0)
+ {
+ pkt->destroy(pkt);
+ this->logger->log(this->logger, ERROR, "error reading from socket: %s", strerror(errno));
+ return FAILED;
+ }
+
+ this->logger->log(this->logger, CONTROL, "received packet from %s:%d",
+ pkt->source->get_address(pkt->source),
+ pkt->source->get_port(pkt->source));
+
+ /* fill in packet */
+ pkt->data.ptr = allocator_alloc(pkt->data.len);
+ memcpy(pkt->data.ptr, buffer, pkt->data.len);
+
+ /* return packet */
+ *packet = pkt;
+
+ return SUCCESS;
+}
+
+/**
+ * implementation of socket_t.send
+ */
+status_t sender(private_socket_t *this, packet_t *packet)
+{
+ ssize_t bytes_sent;
+
+
+ this->logger->log(this->logger, CONTROL, "sending packet to %s:%d",
+ packet->destination->get_address(packet->destination),
+ packet->destination->get_port(packet->destination));
+ /* send data */
+ bytes_sent = sendto(this->socket_fd, packet->data.ptr, packet->data.len,
+ 0, packet->destination->get_sockaddr(packet->destination),
+ *(packet->destination->get_sockaddr_len(packet->destination)));
+
+ if (bytes_sent != packet->data.len)
+ {
+ this->logger->log(this->logger, ERROR, "error writing to socket: %s", strerror(errno));
+ return FAILED;
+ }
+ return SUCCESS;
+}
+
+/**
+ * implementation of socket_t.destroy
+ */
+status_t destroy(private_socket_t *this)
+{
+ close(this->socket_fd);
+ global_logger_manager->destroy_logger(global_logger_manager, this->logger);
+ allocator_free(this);
+
+ return SUCCESS;
+}
+
+socket_t *socket_create(u_int16_t port)
+{
+ private_socket_t *this = allocator_alloc_thing(private_socket_t);
+ struct sockaddr_in addr;
+
+ /* public functions */
+ this->public.send = (status_t(*)(socket_t*, packet_t*))sender;
+ this->public.receive = (status_t(*)(socket_t*, packet_t**))receiver;
+ this->public.destroy = (status_t(*)(socket_t*))destroy;
+
+
+ this->logger = global_logger_manager->create_logger(global_logger_manager, SOCKET, NULL);
+ if (this->logger == NULL)
+ {
+ allocator_free(this);
+ return NULL;
+ }
+
+ /* create default ipv4 socket */
+ this->socket_fd = socket(PF_INET, SOCK_DGRAM, 0);
+ if (this->socket_fd < 0)
+ {
+ this->logger->log(this->logger, ERROR, "unable to open socket: %s", strerror(errno));
+ global_logger_manager->destroy_logger(global_logger_manager, this->logger);
+ allocator_free(this);
+ return NULL;
+ }
+
+ /* bind socket to all interfaces */
+ addr.sin_family = AF_INET;
+ addr.sin_addr.s_addr = INADDR_ANY;
+ addr.sin_port = htons(port);
+ if (bind(this->socket_fd,(struct sockaddr*)&addr, sizeof(addr)) < 0)
+ {
+ this->logger->log(this->logger, ERROR, "unable to bind socket to port %d: %s", port, strerror(errno));
+ global_logger_manager->destroy_logger(global_logger_manager, this->logger);
+ allocator_free(this);
+ return NULL;
+ }
+
+ return (socket_t*)this;
+}