410 lines
11 KiB
C
410 lines
11 KiB
C
/*
|
|
* Copyright (C) 2009 Mamadou Diop.
|
|
*
|
|
* Contact: Mamadou Diop <diopmamadou(at)doubango.org>
|
|
*
|
|
* This file is part of Open Source Doubango Framework.
|
|
*
|
|
* DOUBANGO 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 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* DOUBANGO 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with DOUBANGO.
|
|
*
|
|
*/
|
|
|
|
/**@file tnet_transport.c
|
|
* @brief Network transport layer.
|
|
*
|
|
* <h2>10.2 Tansport</h2>
|
|
* A transport layer always has a master socket which determine what kind of network traffic we expect (stream or dgram).
|
|
* Stream transport can manage TCP, TLS and SCTP sockets. Datagram socket can only manage UDP sockets. <br>
|
|
* A transport can hold both IPv4 and IPv6 sockets.
|
|
* @author Mamadou Diop <diopmamadou(at)doubango.org>
|
|
*
|
|
* @date Created: Sat Nov 8 16:54:58 2009 mdiop
|
|
*/
|
|
#include "tnet_transport.h"
|
|
|
|
#include "tsk_memory.h"
|
|
#include "tsk_string.h"
|
|
#include "tsk_debug.h"
|
|
#include "tsk_thread.h"
|
|
#include "tsk_buffer.h"
|
|
|
|
#include <string.h> /* memcpy, ...(<#void * #>, <#const void * #>, <#tsk_size_t #>) */
|
|
|
|
extern int tnet_transport_prepare(tnet_transport_t *transport);
|
|
extern void *tnet_transport_mainthread(void *param);
|
|
extern int tnet_transport_stop(tnet_transport_t *transport);
|
|
|
|
static void *run(void* self);
|
|
|
|
|
|
tnet_transport_t* tnet_transport_create(const char* host, tnet_port_t port, tnet_socket_type_t type, const char* description)
|
|
{
|
|
return tsk_object_new(tnet_transport_def_t, host, port, type, description);
|
|
}
|
|
|
|
tnet_transport_event_t* tnet_transport_event_create(tnet_transport_event_type_t type, const void* callback_data, tnet_fd_t fd)
|
|
{
|
|
return tsk_object_new(tnet_transport_event_def_t, type, callback_data, fd);
|
|
}
|
|
|
|
int tnet_transport_start(tnet_transport_handle_t* handle)
|
|
{
|
|
int ret = -1;
|
|
if(handle){
|
|
tnet_transport_t *transport = handle;
|
|
|
|
/* prepare transport */
|
|
if((ret = tnet_transport_prepare(transport))){
|
|
TSK_DEBUG_ERROR("Failed to prepare transport.");
|
|
goto bail;
|
|
}
|
|
|
|
/* start transport */
|
|
TSK_RUNNABLE(transport)->run = run;
|
|
if((ret = tsk_runnable_start(TSK_RUNNABLE(transport), tnet_transport_event_def_t))){
|
|
TSK_DEBUG_ERROR("Failed to start transport.");
|
|
goto bail;
|
|
}
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("NULL transport object.");
|
|
}
|
|
|
|
bail:
|
|
return ret;
|
|
}
|
|
|
|
int tnet_transport_issecure(const tnet_transport_handle_t *handle)
|
|
{
|
|
if(handle)
|
|
{
|
|
const tnet_transport_t *transport = handle;
|
|
if(transport->master){
|
|
return TNET_SOCKET_TYPE_IS_SECURE(transport->master->type);
|
|
}
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("NULL transport object.");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
const char* tnet_transport_get_description(const tnet_transport_handle_t *handle)
|
|
{
|
|
if(handle){
|
|
const tnet_transport_t *transport = handle;
|
|
return transport->description;
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("NULL transport object.");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int tnet_transport_get_ip_n_port(const tnet_transport_handle_t *handle, tnet_fd_t fd, tnet_ip_t *ip, tnet_port_t *port)
|
|
{
|
|
if(handle){
|
|
return tnet_get_ip_n_port(fd, ip, port);
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("NULL transport object.");
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int tnet_transport_get_ip_n_port_2(const tnet_transport_handle_t *handle, tnet_ip_t *ip, tnet_port_t *port)
|
|
{
|
|
const tnet_transport_t *transport = handle;
|
|
if(transport){
|
|
// do not check the master, let the apllication die if "null"
|
|
if(ip){
|
|
memcpy(*ip, transport->master->ip, sizeof(transport->master->ip));
|
|
}
|
|
if(port){
|
|
*port = transport->master->port;
|
|
}
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("NULL transport object.");
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
tnet_socket_type_t tnet_transport_get_type(const tnet_transport_handle_t *handle)
|
|
{
|
|
if(handle){
|
|
const tnet_transport_t *transport = handle;
|
|
return transport->type;
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("NULL transport object.");
|
|
}
|
|
return tnet_socket_type_invalid;
|
|
}
|
|
|
|
/**
|
|
* Connects a socket.
|
|
* @param handle The transport to use to connect() the socket. The new socket will be managed by this transport.
|
|
* @param host The remote @a host to connect() to.
|
|
* @param port The remote @a port to connect() to.
|
|
* @param type The type of the socket to use to connect() to the remote @a host.
|
|
* @retval The newly connected socket. For non-blocking sockets you should use @ref tnet_sockfd_waitUntilWritable to check
|
|
* the socket for writability.
|
|
* @sa tnet_sockfd_waitUntilWritable.
|
|
*/
|
|
tnet_fd_t tnet_transport_connectto(const tnet_transport_handle_t *handle, const char* host, tnet_port_t port, tnet_socket_type_t type)
|
|
{
|
|
tnet_transport_t *transport = (tnet_transport_t*)handle;
|
|
struct sockaddr_storage to;
|
|
int status = -1;
|
|
tnet_fd_t fd = TNET_INVALID_FD;
|
|
|
|
if(!transport || !transport->master){
|
|
TSK_DEBUG_ERROR("Invalid transport handle.");
|
|
goto bail;
|
|
}
|
|
|
|
if((TNET_SOCKET_TYPE_IS_STREAM(transport->master->type) && !TNET_SOCKET_TYPE_IS_STREAM(type)) ||
|
|
(TNET_SOCKET_TYPE_IS_DGRAM(transport->master->type) && !TNET_SOCKET_TYPE_IS_DGRAM(type))){
|
|
TSK_DEBUG_ERROR("Master/destination types mismatch [%u/%u]", transport->master->type, type);
|
|
goto bail;
|
|
}
|
|
|
|
/* Init destination sockaddr fields */
|
|
if((status = tnet_sockaddr_init(host, port, type, &to))){
|
|
TSK_DEBUG_ERROR("Invalid HOST/PORT [%s/%u]", host, port);
|
|
goto bail;
|
|
}
|
|
else if(TNET_SOCKET_TYPE_IS_IPV46(type)){
|
|
/* Update the type (unambiguously) */
|
|
if(to.ss_family == AF_INET6){
|
|
TNET_SOCKET_TYPE_SET_IPV6Only(type);
|
|
}
|
|
else{
|
|
TNET_SOCKET_TYPE_SET_IPV4Only(type);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* STREAM ==> create new socket and connect it to the remote host.
|
|
* DGRAM ==> connect the master to the remote host.
|
|
*/
|
|
if(TNET_SOCKET_TYPE_IS_STREAM(type)){
|
|
/* Create client socket descriptor. */
|
|
if(status = tnet_sockfd_init(transport->local_ip, TNET_SOCKET_PORT_ANY, type, &fd)){
|
|
TSK_DEBUG_ERROR("Failed to create new sockfd.");
|
|
goto bail;
|
|
}
|
|
|
|
/* Add the socket */
|
|
if(status = tnet_transport_add_socket(handle, fd, type, tsk_true, tsk_true)){
|
|
TNET_PRINT_LAST_ERROR("Failed to add new socket.");
|
|
|
|
tnet_sockfd_close(&fd);
|
|
goto bail;
|
|
}
|
|
}
|
|
else{
|
|
fd = transport->master->fd;
|
|
}
|
|
|
|
if((status = tnet_sockfd_connectto(fd, (const struct sockaddr_storage *)&to))){
|
|
if(fd != transport->master->fd){
|
|
tnet_sockfd_close(&fd);
|
|
}
|
|
goto bail;
|
|
}
|
|
else{
|
|
if(TNET_SOCKET_TYPE_IS_TLS(type)){
|
|
transport->tls.have_tls = tsk_true;
|
|
/*transport->connected = !*/tnet_tls_socket_connect((tnet_tls_socket_handle_t*)tnet_transport_get_tlshandle(handle, fd));
|
|
}
|
|
else{
|
|
//transport->connected = tsk_true;
|
|
}
|
|
}
|
|
|
|
bail:
|
|
return fd;
|
|
}
|
|
|
|
int tnet_transport_set_callback(const tnet_transport_handle_t *handle, tnet_transport_cb_f callback, const void* callback_data)
|
|
{
|
|
tnet_transport_t *transport = (tnet_transport_t*)handle;
|
|
int ret = -1;
|
|
|
|
if(!transport){
|
|
TSK_DEBUG_ERROR("Invalid server handle.");
|
|
return ret;
|
|
}
|
|
|
|
transport->callback = callback;
|
|
transport->callback_data = callback_data;
|
|
return 0;
|
|
}
|
|
|
|
|
|
int tnet_transport_shutdown(tnet_transport_handle_t* handle)
|
|
{
|
|
if(handle){
|
|
return tnet_transport_stop(handle);
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("NULL transport object.");
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Runnable interface implementation.
|
|
*/
|
|
static void *run(void* self)
|
|
{
|
|
int ret = 0;
|
|
tsk_list_item_t *curr;
|
|
tnet_transport_t *transport = self;
|
|
|
|
TSK_RUNNABLE(transport)->running = tsk_true; // VERY IMPORTANT --> needed by the main thread
|
|
|
|
/* create main thread */
|
|
if((ret = tsk_thread_create(&(transport->mainThreadId[0]), tnet_transport_mainthread, transport))){ /* More important than "tsk_runnable_start" ==> start it first. */
|
|
TSK_FREE(transport->context); /* Otherwise (tsk_thread_create is ok) will be freed when mainthread exit. */
|
|
TSK_DEBUG_FATAL("Failed to create main thread [%d]", ret);
|
|
return tsk_null;
|
|
}
|
|
|
|
TSK_RUNNABLE_RUN_BEGIN(transport);
|
|
|
|
if((curr = TSK_RUNNABLE_POP_FIRST(transport)))
|
|
{
|
|
const tnet_transport_event_t *e = (const tnet_transport_event_t*)curr->data;
|
|
|
|
if(transport->callback){
|
|
transport->callback(e);
|
|
}
|
|
tsk_object_unref(curr);
|
|
}
|
|
|
|
TSK_RUNNABLE_RUN_END(transport);
|
|
|
|
return tsk_null;
|
|
}
|
|
|
|
|
|
|
|
|
|
//=================================================================================================
|
|
// Transport object definition
|
|
//
|
|
static tsk_object_t* tnet_transport_ctor(tsk_object_t * self, va_list * app)
|
|
{
|
|
tnet_transport_t *transport = self;
|
|
if(transport){
|
|
const char *host = va_arg(*app, const char*);
|
|
|
|
#if defined(__GNUC__)
|
|
tnet_port_t port = (uint16_t)va_arg(*app, unsigned);
|
|
#else
|
|
tnet_port_t port = (tnet_port_t)va_arg(*app, tnet_port_t);
|
|
#endif
|
|
|
|
tnet_socket_type_t type = va_arg(*app, tnet_socket_type_t);
|
|
const char *description = va_arg(*app, const char*);
|
|
|
|
if(description){
|
|
transport->description = tsk_strdup(description);
|
|
}
|
|
|
|
transport->type = type;
|
|
|
|
transport->master = tnet_socket_create(host, port, type);
|
|
transport->context = tnet_transport_context_create();
|
|
|
|
if(TNET_SOCKET_TYPE_IS_IPV46(transport->type)){
|
|
transport->local_ip = tsk_strdup(host); /* FQDN */
|
|
}
|
|
else{
|
|
transport->local_ip = tsk_strdup(transport->master->ip); /* IP address */
|
|
}
|
|
}
|
|
return self;
|
|
}
|
|
|
|
static tsk_object_t* tnet_transport_dtor(tsk_object_t * self)
|
|
{
|
|
tnet_transport_t *transport = self;
|
|
if(transport){
|
|
tnet_transport_shutdown(transport);
|
|
TSK_OBJECT_SAFE_FREE(transport->master);
|
|
TSK_OBJECT_SAFE_FREE(transport->context);
|
|
TSK_FREE(transport->description);
|
|
TSK_FREE(transport->local_ip);
|
|
|
|
// tls
|
|
TSK_FREE(transport->tls.ca);
|
|
TSK_FREE(transport->tls.pbk);
|
|
TSK_FREE(transport->tls.pvk);
|
|
}
|
|
|
|
return self;
|
|
}
|
|
|
|
static const tsk_object_def_t tnet_transport_def_s =
|
|
{
|
|
sizeof(tnet_transport_t),
|
|
tnet_transport_ctor,
|
|
tnet_transport_dtor,
|
|
tsk_null,
|
|
};
|
|
const tsk_object_def_t *tnet_transport_def_t = &tnet_transport_def_s;
|
|
|
|
|
|
|
|
//=================================================================================================
|
|
// Transport event object definition
|
|
//
|
|
static tsk_object_t* tnet_transport_event_ctor(tsk_object_t * self, va_list * app)
|
|
{
|
|
tnet_transport_event_t *e = self;
|
|
if(e){
|
|
e->type = va_arg(*app, tnet_transport_event_type_t);
|
|
e->callback_data = va_arg(*app, const void*);
|
|
e->fd = va_arg(*app, tnet_fd_t);
|
|
}
|
|
return self;
|
|
}
|
|
|
|
static tsk_object_t* tnet_transport_event_dtor(tsk_object_t * self)
|
|
{
|
|
tnet_transport_event_t *e = self;
|
|
if(e){
|
|
TSK_FREE(e->data);
|
|
}
|
|
|
|
return self;
|
|
}
|
|
|
|
static const tsk_object_def_t tnet_transport_event_def_s =
|
|
{
|
|
sizeof(tnet_transport_event_t),
|
|
tnet_transport_event_ctor,
|
|
tnet_transport_event_dtor,
|
|
0,
|
|
};
|
|
const tsk_object_def_t *tnet_transport_event_def_t = &tnet_transport_event_def_s;
|
|
|