310 lines
7.4 KiB
C
310 lines
7.4 KiB
C
/*
|
|
* TCP/IP or UDP/IP networking functions
|
|
* modified for LWIP support on ESP8266
|
|
*
|
|
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
|
|
* Additions Copyright (C) 2015 Angus Gratton
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
* This file is part of mbed TLS (https://tls.mbed.org)
|
|
*/
|
|
#include "mbedtls/config.h"
|
|
|
|
#if defined(MBEDTLS_NET_C)
|
|
|
|
#include "mbedtls/net_sockets.h"
|
|
|
|
#include <string.h>
|
|
//
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
//#include <sys/time.h>
|
|
#include <unistd.h>
|
|
#include "lwip/netdb.h"
|
|
#include <errno.h>
|
|
//
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
//
|
|
#include <time.h>
|
|
//
|
|
#include <stdint.h>
|
|
|
|
/*
|
|
* Prepare for using the sockets interface
|
|
*/
|
|
static int net_prepare( void )
|
|
{
|
|
return( 0 );
|
|
}
|
|
|
|
/*
|
|
* Initialize a context
|
|
*/
|
|
void mbedtls_net_init( mbedtls_net_context *ctx )
|
|
{
|
|
ctx->fd = -1;
|
|
}
|
|
|
|
/*
|
|
* Initiate a TCP connection with host:port and the given protocol
|
|
*/
|
|
int mbedtls_net_connect( mbedtls_net_context *ctx, const char *host, const char *port, int proto )
|
|
{
|
|
int ret;
|
|
uint32 ports = getul((char*)port);
|
|
struct sockaddr_in client_addr;
|
|
struct sockaddr_in server_addr;
|
|
|
|
if( ( ret = net_prepare() ) != 0 )
|
|
return( ret );
|
|
|
|
client_addr.sin_family = AF_INET;
|
|
client_addr.sin_addr.s_addr = htons(IPADDR_ANY);
|
|
client_addr.sin_port = htons(0);
|
|
|
|
ctx->fd = socket(AF_INET, SOCK_STREAM,IPPROTO_TCP);
|
|
if( ctx->fd < 0 ){
|
|
ret = MBEDTLS_ERR_NET_SOCKET_FAILED;
|
|
os_printf("Create Socket Failed!\n");
|
|
goto mbedtls_error;
|
|
}
|
|
|
|
if (bind(ctx->fd, (struct sockaddr*)&client_addr,sizeof(client_addr))) {
|
|
ret = MBEDTLS_ERR_NET_BIND_FAILED;
|
|
os_printf("Client Bind Port Failed!\n");
|
|
goto mbedtls_error;
|
|
}
|
|
|
|
server_addr.sin_family = AF_INET;
|
|
server_addr.sin_addr.s_addr = ipaddr_addr(host);
|
|
server_addr.sin_port = htons(ports);
|
|
|
|
ret = connect(ctx->fd, (struct sockaddr*)&server_addr, sizeof(server_addr));
|
|
if (ret < 0){
|
|
ret = MBEDTLS_ERR_NET_CONNECT_FAILED;
|
|
os_printf("Can Not Connect To!\n");
|
|
}
|
|
|
|
mbedtls_error:
|
|
if (ret < 0)
|
|
close( ctx->fd );
|
|
return( ret );
|
|
}
|
|
|
|
/*
|
|
* Create a listening socket on bind_ip:port
|
|
*/
|
|
int mbedtls_net_bind( mbedtls_net_context *ctx, const char *bind_ip, const char *port, int proto )
|
|
{
|
|
int ret;
|
|
int protocol = 0;
|
|
int sock_type = 0;
|
|
uint32 ports = getul((char*)port);
|
|
|
|
struct sockaddr_in server_addr;
|
|
|
|
if( ( ret = net_prepare() ) != 0 )
|
|
return( ret );
|
|
|
|
server_addr.sin_family = AF_INET;
|
|
server_addr.sin_addr.s_addr = htons(IPADDR_ANY);
|
|
server_addr.sin_port = htons(ports);
|
|
protocol = proto == MBEDTLS_NET_PROTO_UDP ? IPPROTO_UDP : IPPROTO_TCP;
|
|
sock_type = proto == MBEDTLS_NET_PROTO_UDP ? SOCK_DGRAM : SOCK_STREAM;
|
|
|
|
ctx->fd = socket(AF_INET, sock_type, protocol);
|
|
if( ctx->fd < 0 ){
|
|
ret = MBEDTLS_ERR_NET_SOCKET_FAILED;
|
|
os_printf("Create Socket Failed!\n");
|
|
goto mbedtls_error;
|
|
}
|
|
|
|
ret = bind(ctx->fd, (struct sockaddr*)&server_addr,sizeof(server_addr));
|
|
if (ret != 0){
|
|
ret = MBEDTLS_ERR_NET_BIND_FAILED;
|
|
os_printf("Server Bind Port Failed!\n");
|
|
goto mbedtls_error;
|
|
}
|
|
|
|
if (proto == MBEDTLS_NET_PROTO_TCP){
|
|
ret = listen(ctx->fd, MBEDTLS_ERR_NET_LISTEN_FAILED);
|
|
if (ret != 0){
|
|
ret = MBEDTLS_ERR_NET_LISTEN_FAILED;
|
|
goto mbedtls_error;
|
|
}
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
mbedtls_error:
|
|
if (ret < 0)
|
|
close( ctx->fd );
|
|
return( ret );
|
|
|
|
}
|
|
|
|
/*
|
|
* Check if the requested operation would be blocking on a non-blocking socket
|
|
* and thus 'failed' with a negative return value.
|
|
*
|
|
* Note: on a blocking socket this function always returns 0!
|
|
*/
|
|
static int net_would_block( const mbedtls_net_context *ctx )
|
|
{
|
|
return( 0 );
|
|
}
|
|
|
|
/*
|
|
* Accept a connection from a remote client
|
|
*/
|
|
int mbedtls_net_accept( mbedtls_net_context *bind_ctx,
|
|
mbedtls_net_context *client_ctx,
|
|
void *client_ip, size_t buf_size, size_t *ip_len )
|
|
{
|
|
int ret;
|
|
int type;
|
|
|
|
struct sockaddr_in client_addr;
|
|
|
|
socklen_t n = (socklen_t) sizeof( client_addr );
|
|
socklen_t type_len = (socklen_t) sizeof( type );
|
|
|
|
client_ctx->fd = (int) accept( bind_ctx->fd,(struct sockaddr *) &client_addr, &n );
|
|
if (client_ctx->fd < 0){
|
|
ret = MBEDTLS_ERR_NET_SOCKET_FAILED;
|
|
os_printf("Create Socket Failed!\n");
|
|
goto mbedtls_error;
|
|
}
|
|
|
|
if(client_ip != NULL){
|
|
struct sockaddr_in *addr4 = (struct sockaddr_in *) &client_addr;
|
|
*ip_len = sizeof( addr4->sin_addr.s_addr );
|
|
|
|
if( buf_size < *ip_len ){
|
|
ret = MBEDTLS_ERR_NET_BUFFER_TOO_SMALL;
|
|
os_printf("Create Socket Failed!\n");
|
|
goto mbedtls_error;
|
|
}
|
|
|
|
memcpy(client_ip, &addr4->sin_addr.s_addr, *ip_len);
|
|
}
|
|
ret = 0;
|
|
mbedtls_error:
|
|
if (ret < 0)
|
|
close( client_ctx->fd );
|
|
return( ret );
|
|
return( 0 );
|
|
}
|
|
|
|
/*
|
|
* Set the socket blocking or non-blocking
|
|
*/
|
|
int mbedtls_net_set_block( mbedtls_net_context *ctx )
|
|
{
|
|
return( fcntl( ctx->fd, F_SETFL, fcntl( ctx->fd, F_GETFL, 0 ) & ~O_NONBLOCK ) );
|
|
}
|
|
|
|
int mbedtls_net_set_nonblock( mbedtls_net_context *ctx )
|
|
{
|
|
return( fcntl( ctx->fd, F_SETFL, fcntl( ctx->fd, F_GETFL, 0 ) | O_NONBLOCK ) );
|
|
}
|
|
|
|
/*
|
|
* Read at most 'len' characters
|
|
*/
|
|
int mbedtls_net_recv( void *ctx, unsigned char *buf, size_t len )
|
|
{
|
|
int ret;
|
|
int fd = ((mbedtls_net_context *) ctx)->fd;
|
|
|
|
if( fd < 0 )
|
|
return( MBEDTLS_ERR_NET_INVALID_CONTEXT );
|
|
|
|
// os_printf("mbedtls_net_recv need %d\n", len);
|
|
ret = (int) read( fd, buf, len );
|
|
|
|
if( ret < 0 )
|
|
{
|
|
if( net_would_block( ctx ) != 0 )
|
|
return( MBEDTLS_ERR_SSL_WANT_READ );
|
|
|
|
return( MBEDTLS_ERR_NET_RECV_FAILED );
|
|
}
|
|
// os_printf("mbedtls_net_recv get %d\n", ret);
|
|
if (ret == 0)
|
|
return( MBEDTLS_ERR_SSL_WANT_READ );
|
|
|
|
return( ret );
|
|
}
|
|
|
|
/*
|
|
* Read at most 'len' characters, blocking for at most 'timeout' ms
|
|
*/
|
|
int mbedtls_net_recv_timeout( void *ctx, unsigned char *buf, size_t len,
|
|
uint32_t timeout )
|
|
{
|
|
int ret;
|
|
struct timeval tv;
|
|
fd_set read_fds;
|
|
int fd = ((mbedtls_net_context *) ctx)->fd;
|
|
|
|
if( fd < 0 )
|
|
return( MBEDTLS_ERR_NET_INVALID_CONTEXT );
|
|
|
|
/* This call will not block */
|
|
return( mbedtls_net_recv( ctx, buf, len ) );
|
|
}
|
|
|
|
/*
|
|
* Write at most 'len' characters
|
|
*/
|
|
int mbedtls_net_send( void *ctx, const unsigned char *buf, size_t len )
|
|
{
|
|
int ret;
|
|
int fd = ((mbedtls_net_context *) ctx)->fd;
|
|
|
|
if( fd < 0 )
|
|
return( MBEDTLS_ERR_NET_INVALID_CONTEXT );
|
|
|
|
// os_printf("mbedtls_net_send need %d\n", len);
|
|
ret = (int) write( fd, buf, len );
|
|
|
|
if( ret < 0 )
|
|
{
|
|
if( net_would_block( ctx ) != 0 )
|
|
return( MBEDTLS_ERR_SSL_WANT_WRITE );
|
|
}
|
|
// os_printf("mbedtls_net_send write %d\n", ret);
|
|
if (ret == 0)
|
|
return( MBEDTLS_ERR_SSL_WANT_WRITE );
|
|
return( ret );
|
|
}
|
|
|
|
/*
|
|
* Gracefully close the connection
|
|
*/
|
|
void mbedtls_net_free( mbedtls_net_context *ctx )
|
|
{
|
|
if( ctx->fd == -1 )
|
|
return;
|
|
|
|
close( ctx->fd );
|
|
|
|
ctx->fd = -1;
|
|
}
|
|
|
|
#endif /* MBEDTLS_NET_C */
|