Author: Pekka Riikonen <priikone@silcnet.org>
- Copyright (C) 1997 - 2005 Pekka Riikonen
+ Copyright (C) 1997 - 2006 Pekka Riikonen
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
*/
/* $Id$ */
-#include "silcincludes.h"
+#include "silc.h"
#include "silcnet.h"
#ifdef HAVE_IPV6
} SilcSockaddr;
static SilcBool silc_net_set_sockaddr(SilcSockaddr *addr, const char *ip_addr,
- int port)
+ int port)
{
int len;
static void silc_net_accept_stream(SilcSocketStreamStatus status,
SilcStream stream, void *context)
{
- SilcNetServer server = context;
+ SilcNetListener listener = context;
if (status != SILC_SOCKET_OK)
return;
- server->callback(SILC_NET_OK, stream, server->context);
+ listener->callback(SILC_NET_OK, stream, listener->context);
}
/* Accept incoming connection and notify upper layer */
SILC_TASK_CALLBACK(silc_net_accept)
{
- SilcNetServer server = context;
+ SilcNetListener listener = context;
int sock;
SILC_LOG_DEBUG(("Accepting new connection"));
silc_net_set_socket_opt(sock, SOL_SOCKET, SO_REUSEADDR, 1);
/* Create socket stream */
- silc_socket_stream_create(sock, TRUE, server->require_fqdn, schedule,
- silc_net_accept_stream, server);
+ silc_socket_tcp_stream_create(sock, listener->lookup,
+ listener->require_fqdn, schedule,
+ silc_net_accept_stream, listener);
}
-/* Create network listener */
+/* Create TCP network listener */
-SilcNetServer
-silc_net_create_server(const char **local_ip_addr, SilcUInt32 local_ip_count,
- int port, SilcBool require_fqdn, SilcSchedule schedule,
- SilcNetCallback callback, void *context)
+SilcNetListener
+silc_net_tcp_create_listener(const char **local_ip_addr,
+ SilcUInt32 local_ip_count, int port,
+ SilcBool lookup, SilcBool require_fqdn,
+ SilcSchedule schedule,
+ SilcNetCallback callback, void *context)
{
- SilcNetServer netserver = NULL;
+ SilcNetListener listener = NULL;
SilcSockaddr server;
int i, sock, rval;
const char *ipany = "0.0.0.0";
- SILC_LOG_DEBUG(("Creating new network listener"));
+ SILC_LOG_DEBUG(("Creating TCP listener"));
- if (port < 1 || !schedule || !callback)
+ if (port < 0 || !schedule || !callback)
goto err;
- netserver = silc_calloc(1, sizeof(*netserver));
- if (!netserver) {
+ listener = silc_calloc(1, sizeof(*listener));
+ if (!listener) {
callback(SILC_NET_NO_MEMORY, NULL, context);
return NULL;
}
- netserver->schedule = schedule;
- netserver->callback = callback;
- netserver->context = context;
+ listener->schedule = schedule;
+ listener->callback = callback;
+ listener->context = context;
+ listener->require_fqdn = require_fqdn;
+ listener->lookup = lookup;
if (local_ip_count > 0) {
- netserver->socks = silc_calloc(local_ip_count, sizeof(*netserver->socks));
- if (!netserver->socks) {
+ listener->socks = silc_calloc(local_ip_count, sizeof(*listener->socks));
+ if (!listener->socks) {
callback(SILC_NET_NO_MEMORY, NULL, context);
return NULL;
}
} else {
- netserver->socks = silc_calloc(1, sizeof(*netserver->socks));
- if (!netserver->socks) {
+ listener->socks = silc_calloc(1, sizeof(*listener->socks));
+ if (!listener->socks) {
callback(SILC_NET_NO_MEMORY, NULL, context);
return NULL;
}
goto err;
}
- /* Bind the server socket */
+ /* Bind the listener socket */
rval = bind(sock, &server.sa, SIZEOF_SOCKADDR(server));
if (rval < 0) {
SILC_LOG_DEBUG(("Cannot bind socket: %s", strerror(errno)));
}
/* Specify that we are listenning */
- rval = listen(sock, 5);
+ rval = listen(sock, 64);
if (rval < 0) {
SILC_LOG_ERROR(("Cannot set socket listenning: %s", strerror(errno)));
goto err;
silc_net_set_socket_nonblock(sock);
/* Schedule for incoming connections */
- silc_schedule_task_add_fd(schedule, sock, silc_net_accept, netserver);
+ silc_schedule_task_add_fd(schedule, sock, silc_net_accept, listener);
- SILC_LOG_DEBUG(("Network listener created, fd=%d", sock));
- netserver->socks[i] = sock;
- netserver->socks_count++;
+ SILC_LOG_DEBUG(("TCP listener created, fd=%d", sock));
+ listener->socks[i] = sock;
+ listener->socks_count++;
}
- return netserver;
+ return listener;
err:
if (callback)
callback(SILC_NET_ERROR, NULL, context);
- if (netserver)
- silc_net_close_server(netserver);
+ if (listener)
+ silc_net_close_listener(listener);
return NULL;
}
/* Close network listener */
-void silc_net_close_server(SilcNetServer server)
+void silc_net_close_listener(SilcNetListener listener)
{
int i;
SILC_LOG_DEBUG(("Closing network listener"));
- for (i = 0; i < server->socks_count; i++) {
- silc_schedule_task_del_by_fd(server->schedule, server->socks[i]);
- shutdown(server->socks[i], 2);
- close(server->socks[i]);
+ for (i = 0; i < listener->socks_count; i++) {
+ silc_schedule_task_del_by_fd(listener->schedule, listener->socks[i]);
+ shutdown(listener->socks[i], 2);
+ close(listener->socks[i]);
}
- silc_free(server->socks);
- silc_free(server);
+ silc_free(listener->socks);
+ silc_free(listener);
+}
+
+/* Create UDP stream */
+
+SilcStream
+silc_net_udp_connect(const char *local_ip_addr, int local_port,
+ const char *remote_ip_addr, int remote_port,
+ SilcSchedule schedule)
+{
+ SilcStream stream;
+ SilcSockaddr server;
+ int sock = -1, rval;
+ const char *ipany = "0.0.0.0";
+
+ SILC_LOG_DEBUG(("Creating UDP stream"));
+
+ if (!schedule)
+ goto err;
+
+ /* Bind to local addresses */
+ SILC_LOG_DEBUG(("Binding to local address %s",
+ local_ip_addr ? local_ip_addr : ipany));
+
+ /* Set sockaddr for server */
+ if (!silc_net_set_sockaddr(&server, local_ip_addr ? local_ip_addr : ipany,
+ local_port))
+ goto err;
+
+ /* Create the socket */
+ sock = socket(server.sin.sin_family, SOCK_DGRAM, 0);
+ if (sock < 0) {
+ SILC_LOG_ERROR(("Cannot create socket: %s", strerror(errno)));
+ goto err;
+ }
+
+ /* Set the socket options */
+ rval = silc_net_set_socket_opt(sock, SOL_SOCKET, SO_REUSEADDR, 1);
+ if (rval < 0) {
+ SILC_LOG_ERROR(("Cannot set socket options: %s", strerror(errno)));
+ goto err;
+ }
+#ifdef SO_REUSEPORT
+ rval = silc_net_set_socket_opt(sock, SOL_SOCKET, SO_REUSEPORT, 1);
+ if (rval < 0) {
+ SILC_LOG_ERROR(("Cannot set socket options: %s", strerror(errno)));
+ goto err;
+ }
+#endif /* SO_REUSEPORT */
+
+ /* Bind the listener socket */
+ rval = bind(sock, &server.sa, SIZEOF_SOCKADDR(server));
+ if (rval < 0) {
+ SILC_LOG_DEBUG(("Cannot bind socket: %s", strerror(errno)));
+ goto err;
+ }
+
+ /* Set socket to non-blocking mode */
+ silc_net_set_socket_nonblock(sock);
+
+ /* Set to connected state if remote address is provided. */
+ if (remote_ip_addr && remote_port) {
+ if (!silc_net_set_sockaddr(&server, remote_ip_addr, remote_port))
+ goto err;
+
+ rval = connect(sock, &server.sa, SIZEOF_SOCKADDR(server));
+ if (rval < 0) {
+ SILC_LOG_DEBUG(("Cannot connect UDP stream: %s", strerror(errno)));
+ goto err;
+ }
+ }
+
+ /* Set send and receive buffer size */
+#ifdef SO_SNDBUF
+ rval = silc_net_set_socket_opt(sock, SOL_SOCKET, SO_SNDBUF, 65535);
+ if (rval < 0) {
+ SILC_LOG_ERROR(("Cannot set socket options: %s", strerror(errno)));
+ goto err;
+ }
+#endif /* SO_SNDBUF */
+#ifdef SO_RCVBUF
+ rval = silc_net_set_socket_opt(sock, SOL_SOCKET, SO_RCVBUF, 65535);
+ if (rval < 0) {
+ SILC_LOG_ERROR(("Cannot set socket options: %s", strerror(errno)));
+ goto err;
+ }
+#endif /* SO_RCVBUF */
+
+ /* Encapsulate into socket stream */
+ stream =
+ silc_socket_udp_stream_create(sock, local_ip_addr ?
+ silc_net_is_ip6(local_ip_addr) : FALSE,
+ remote_ip_addr ? TRUE : FALSE, schedule);
+ if (!stream)
+ goto err;
+
+ SILC_LOG_DEBUG(("UDP stream created, fd=%d", sock));
+ return stream;
+
+ err:
+ if (sock != -1)
+ close(sock);
+ return NULL;
+}
+
+/* Receive UDP packet */
+
+int silc_net_udp_receive(SilcStream stream, char *remote_ip_addr,
+ SilcUInt32 remote_ip_addr_size, int *remote_port,
+ unsigned char *ret_data, SilcUInt32 data_size)
+{
+ SilcSocketStream sock = stream;
+ SilcSockaddr s;
+ struct sockaddr *from;
+ int len, flen;
+
+ SILC_LOG_DEBUG(("Reading data from UDP socket %d", sock->sock));
+
+ if (remote_ip_addr && remote_port) {
+ if (sock->ipv6) {
+ from = (struct sockaddr *)&s.sin6;
+ flen = sizeof(s.sin6);
+ } else {
+ from = (struct sockaddr *)&s.sin;
+ flen = sizeof(s.sin);
+ }
+ len = recvfrom(sock->sock, ret_data, data_size, 0, from, &flen);
+ } else
+ len = recv(sock->sock, ret_data, data_size, 0);
+
+ if (len < 0) {
+ if (errno == EAGAIN || errno == EINTR) {
+ SILC_LOG_DEBUG(("Could not read immediately, will do it later"));
+ silc_schedule_set_listen_fd(sock->schedule, sock->sock,
+ SILC_TASK_READ, FALSE);
+ return -1;
+ }
+ SILC_LOG_DEBUG(("Cannot read from UDP socket: %d:%s",
+ sock->sock, strerror(errno)));
+ silc_schedule_unset_listen_fd(sock->schedule, sock->sock);
+ sock->sock_error = errno;
+ return -2;
+ }
+
+ SILC_LOG_DEBUG(("Read %d bytes", len));
+
+ if (!len)
+ silc_schedule_unset_listen_fd(sock->schedule, sock->sock);
+
+ /* Return remote address */
+ if (remote_ip_addr && remote_port) {
+ if (sock->ipv6) {
+ *remote_port = ntohs(s.sin6.sin6_port);
+ inet_ntop(AF_INET6, &s.sin6.sin6_addr, remote_ip_addr,
+ remote_ip_addr_size);
+ } else {
+ *remote_port = ntohs(s.sin.sin_port);
+ inet_ntop(AF_INET, &s.sin.sin_addr, remote_ip_addr,
+ remote_ip_addr_size);
+ }
+
+ SILC_LOG_DEBUG(("UDP packet from %s:%d", remote_ip_addr, *remote_port));
+ }
+
+ return len;
+}
+
+/* Send UDP packet */
+
+int silc_net_udp_send(SilcStream stream,
+ const char *remote_ip_addr, int remote_port,
+ const unsigned char *data, SilcUInt32 data_len)
+{
+ SilcSocketStream sock = stream;
+ SilcSockaddr remote;
+ int ret;
+
+ SILC_LOG_DEBUG(("Sending data to UDP socket %d", sock->sock));
+
+ /* Set sockaddr */
+ if (!silc_net_set_sockaddr(&remote, remote_ip_addr, remote_port))
+ return -2;
+
+ /* Send */
+ ret = sendto(sock->sock, data, data_len, 0, &remote.sa,
+ SIZEOF_SOCKADDR(remote));
+ if (ret < 0) {
+ if (errno == EAGAIN || errno == EINTR) {
+ SILC_LOG_DEBUG(("Could not send immediately, will do it later"));
+ silc_schedule_set_listen_fd(sock->schedule, sock->sock,
+ SILC_TASK_READ | SILC_TASK_WRITE, FALSE);
+ return -1;
+ }
+ SILC_LOG_DEBUG(("Cannot send to UDP socket: %s", strerror(errno)));
+ silc_schedule_unset_listen_fd(sock->schedule, sock->sock);
+ sock->sock_error = errno;
+ return -2;
+ }
+
+ SILC_LOG_DEBUG(("Sent data %d bytes", ret));
+ if (silc_schedule_get_fd_events(sock->schedule, sock->sock) &
+ SILC_TASK_WRITE)
+ silc_schedule_set_listen_fd(sock->schedule, sock->sock,
+ SILC_TASK_READ, FALSE);
+
+ return ret;
}
/* Asynchronous TCP/IP connecting */
SilcSocketStreamStatus stream_status;
SilcStream stream;
SilcFSMStruct fsm;
- SilcFSMSemaStruct sema;
+ SilcFSMEventStruct event;
SilcAsyncOperation op;
SilcAsyncOperation sop;
char *local_ip;
SILC_TASK_CALLBACK(silc_net_connect_wait)
{
SilcNetConnect conn = context;
- SILC_FSM_SEMA_POST(&conn->sema);
+ SILC_FSM_EVENT_SIGNAL(&conn->event);
+ silc_schedule_task_del_by_fd(schedule, conn->sock);
}
SILC_FSM_STATE(silc_net_connect_st_start)
if (conn->aborted) {
/** Aborted */
silc_fsm_next(fsm, silc_net_connect_st_finish);
- return SILC_FSM_CONTINUE;
+ SILC_FSM_CONTINUE;
}
/* Do host lookup */
/** Network unreachable */
conn->status = SILC_NET_HOST_UNREACHABLE;
silc_fsm_next(fsm, silc_net_connect_st_finish);
- return SILC_FSM_CONTINUE;
+ SILC_FSM_CONTINUE;
}
/* Set sockaddr for this connection */
if (!silc_net_set_sockaddr(&desthost, conn->ip_addr, conn->port)) {
/** Sockaddr failed */
silc_fsm_next(fsm, silc_net_connect_st_finish);
- return SILC_FSM_CONTINUE;
+ SILC_FSM_CONTINUE;
}
/* Create the connection socket */
/** Cannot create socket */
SILC_LOG_ERROR(("Cannot create socket: %s", strerror(errno)));
silc_fsm_next(fsm, silc_net_connect_st_finish);
- return SILC_FSM_CONTINUE;
+ SILC_FSM_CONTINUE;
}
/* Bind to the local address if provided */
/** Cannot connect to remote host */
SILC_LOG_ERROR(("Cannot connect to remote host: %s", strerror(errno)));
silc_fsm_next(fsm, silc_net_connect_st_finish);
- return SILC_FSM_CONTINUE;
+ SILC_FSM_CONTINUE;
}
}
/** Wait for connection */
silc_fsm_next(fsm, silc_net_connect_st_connected);
- silc_fsm_sema_init(&conn->sema, fsm, 0);
+ silc_fsm_event_init(&conn->event, fsm);
silc_schedule_task_add_fd(silc_fsm_get_schedule(fsm), sock,
silc_net_connect_wait, conn);
silc_schedule_set_listen_fd(silc_fsm_get_schedule(fsm), sock,
SILC_TASK_WRITE, FALSE);
- SILC_FSM_SEMA_WAIT(&conn->sema);
- return SILC_FSM_CONTINUE;
+ SILC_FSM_EVENT_WAIT(&conn->event);
+ SILC_FSM_CONTINUE;
}
static void silc_net_connect_wait_stream(SilcSocketStreamStatus status,
if (conn->aborted) {
/** Aborted */
silc_fsm_next(fsm, silc_net_connect_st_finish);
- return SILC_FSM_CONTINUE;
+ SILC_FSM_CONTINUE;
}
ret = silc_net_get_socket_opt(conn->sock, SOL_SOCKET, SO_ERROR,
conn->retry--;
silc_net_close_connection(conn->sock);
silc_fsm_next(fsm, silc_net_connect_st_start);
- return SILC_FSM_CONTINUE;
+ SILC_FSM_CONTINUE;
}
#if defined(ECONNREFUSED)
/** Connecting failed */
SILC_LOG_DEBUG(("Connecting failed"));
silc_fsm_next(fsm, silc_net_connect_st_finish);
- return SILC_FSM_CONTINUE;
+ SILC_FSM_CONTINUE;
}
/** Connection created */
silc_fsm_next(fsm, silc_net_connect_st_stream);
- SILC_FSM_CALL((conn->sop = silc_socket_stream_create(
+ SILC_FSM_CALL((conn->sop = silc_socket_tcp_stream_create(
conn->sock, FALSE, FALSE,
schedule,
silc_net_connect_wait_stream, conn)));
if (conn->aborted) {
/** Aborted */
silc_fsm_next(fsm, silc_net_connect_st_finish);
- return SILC_FSM_CONTINUE;
+ SILC_FSM_CONTINUE;
}
if (conn->stream_status != SILC_SOCKET_OK) {
else
conn->status = SILC_NET_ERROR;
silc_fsm_next(fsm, silc_net_connect_st_finish);
- return SILC_FSM_CONTINUE;
+ SILC_FSM_CONTINUE;
}
/* Set stream information */
SILC_LOG_DEBUG(("Connected successfully"));
conn->status = SILC_NET_OK;
silc_fsm_next(fsm, silc_net_connect_st_finish);
- return SILC_FSM_CONTINUE;
+ SILC_FSM_CONTINUE;
}
SILC_FSM_STATE(silc_net_connect_st_finish)
silc_async_free(conn->sop);
}
- return SILC_FSM_FINISH;
+ SILC_FSM_FINISH;
}
static void silc_net_connect_abort(SilcAsyncOperation op, void *context)
/* Start async operation */
conn->op = silc_async_alloc(silc_net_connect_abort, NULL, conn);
if (!conn->op) {
+ silc_free(conn);
callback(SILC_NET_NO_MEMORY, NULL, context);
return NULL;
}
conn->local_ip = strdup(local_ip_addr);
conn->remote = strdup(remote_ip_addr);
if (!conn->remote) {
+ silc_async_free(conn->op);
+ silc_free(conn->local_ip);
+ silc_free(conn);
callback(SILC_NET_NO_MEMORY, NULL, context);
return NULL;
}
/* Set's the socket to non-blocking mode. */
-int silc_net_set_socket_nonblock(int sock)
+int silc_net_set_socket_nonblock(SilcSocket sock)
{
- return fcntl(sock, F_SETFL, fcntl(sock, F_GETFL, 0) | O_NONBLOCK);
+ return fcntl((int)sock, F_SETFL, fcntl(sock, F_GETFL, 0) | O_NONBLOCK);
}
/* Converts the IP number string from numbers-and-dots notation to
projects / silc.git / blobdiff