/* * TCP/IP or UDP/IP networking functions * * Copyright The Mbed TLS Contributors * 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. */ /* Enable definition of getaddrinfo() even when compiling with -std=c99. Must * be set before config.h, which pulls in glibc's features.h indirectly. * Harmless on other platforms. */ #ifndef _POSIX_C_SOURCE #define _POSIX_C_SOURCE 200112L #endif #ifndef _XOPEN_SOURCE #define _XOPEN_SOURCE 600 /* sockaddr_storage */ #endif #include "common.h" #if defined(MBEDTLS_NET_C) #if !defined(unix) && !defined(__unix__) && !defined(__unix) && \ !defined(__APPLE__) && !defined(_WIN32) && !defined(__QNXNTO__) && \ !defined(__HAIKU__) && !defined(__midipix__) #error "This module only works on Unix and Windows, see MBEDTLS_NET_C in config.h" #endif #if defined(MBEDTLS_PLATFORM_C) #include "mbedtls/platform.h" #else #include #endif #include "mbedtls/net_sockets.h" #include "mbedtls/error.h" #include "sys/_timeval.h" #include #if (defined(_WIN32) || defined(_WIN32_WCE)) && !defined(EFIX64) && \ !defined(EFI32) #define IS_EINTR( ret ) ( ( ret ) == WSAEINTR ) #if !defined(_WIN32_WINNT) /* Enables getaddrinfo() & Co */ #define _WIN32_WINNT 0x0501 #endif #include #include #include #if (_WIN32_WINNT < 0x0501) #include #endif #if defined(_MSC_VER) #if defined(_WIN32_WCE) #pragma comment( lib, "ws2.lib" ) #else #pragma comment( lib, "ws2_32.lib" ) #endif #endif /* _MSC_VER */ #define read(fd,buf,len) recv( fd, (char*)( buf ), (int)( len ), 0 ) #define write(fd,buf,len) send( fd, (char*)( buf ), (int)( len ), 0 ) #define close(fd) closesocket(fd) static int wsa_init_done = 0; #else /* ( _WIN32 || _WIN32_WCE ) && !EFIX64 && !EFI32 */ #include #if defined(CONFIG_QUEC_PROJECT_FEATURE_SSL) //#include #endif #include #include #if defined(CONFIG_QUEC_PROJECT_FEATURE_SSL) //#include #endif #include #include #include #include #include #define IS_EINTR( ret ) ( ( ret ) == EINTR ) #endif /* ( _WIN32 || _WIN32_WCE ) && !EFIX64 && !EFI32 */ /* Some MS functions want int and MSVC warns if we pass size_t, * but the standard functions use socklen_t, so cast only for MSVC */ #if defined(_MSC_VER) #define MSVC_INT_CAST (int) #else #define MSVC_INT_CAST #endif #include #include #include #ifdef CONFIG_QUEC_PROJECT_FEATURE_SSL #include "ql_log.h" #include "ql_api_datacall.h" #define HTONS(x) ((((x)&0x00ffUL) << 8) | (((x)&0xff00UL) >> 8)) #define Log_d(msg, ...) QL_LOG(QL_LOG_LEVEL_INFO, "net_socket ", msg, ##__VA_ARGS__) #define Log_i(msg, ...) QL_LOG(QL_LOG_LEVEL_INFO, "net_socket ", msg, ##__VA_ARGS__) #define Log_w(msg, ...) QL_LOG(QL_LOG_LEVEL_WARN, "net_socket ", msg, ##__VA_ARGS__) #define Log_e(msg, ...) QL_LOG(QL_LOG_LEVEL_ERROR, "net_socket ", msg, ##__VA_ARGS__) //如果是小端则返回1，如果是大端则返回0 int JudgeSystem(void) { int a = 1; char *p = (char *)&a; return *p; } #endif /* * Prepare for using the sockets interface */ static int net_prepare( void ) { #if ( defined(_WIN32) || defined(_WIN32_WCE) ) && !defined(EFIX64) && \ !defined(EFI32) WSADATA wsaData; if( wsa_init_done == 0 ) { if( WSAStartup( MAKEWORD(2,0), &wsaData ) != 0 ) return( MBEDTLS_ERR_NET_SOCKET_FAILED ); wsa_init_done = 1; } #else #if !defined(EFIX64) && !defined(EFI32) signal( SIGPIPE, SIG_IGN ); #endif #endif return( 0 ); } /* * Return 0 if the file descriptor is valid, an error otherwise. * If for_select != 0, check whether the file descriptor is within the range * allowed for fd_set used for the FD_xxx macros and the select() function. */ static int check_fd( int fd, int for_select ) { if( fd < 0 ) return( MBEDTLS_ERR_NET_INVALID_CONTEXT ); #if (defined(_WIN32) || defined(_WIN32_WCE)) && !defined(EFIX64) && \ !defined(EFI32) (void) for_select; #else /* A limitation of select() is that it only works with file descriptors * that are strictly less than FD_SETSIZE. This is a limitation of the * fd_set type. Error out early, because attempting to call FD_SET on a * large file descriptor is a buffer overflow on typical platforms. */ if( for_select && fd >= FD_SETSIZE ) return( MBEDTLS_ERR_NET_POLL_FAILED ); #endif 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 */ #ifdef QUEC_MBEDTLS_NET_CONNECT int mbedtls_net_connect(mbedtls_net_context *ctx, const char *host, const char *port, int proto, ...) { int ret; uint8_t nSim = 0; int profile_idx = 0; ql_data_call_info_s info; char ip6_addr_str[64] = {0}; char ip4_addr_str[16] = {0}; struct sockaddr_in local4, server_ipv4; struct sockaddr_in6 local6, server_ipv6; struct addrinfo hints, *addr_list, *cur; if ((ret = net_prepare()) != 0) { return (ret); } //get profile_idx va_list vp; va_start(vp, proto); profile_idx = va_arg(vp, int); va_end(vp); Log_d("profile_idx: %d", profile_idx); memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_UNSPEC; hints.ai_socktype = proto == MBEDTLS_NET_PROTO_UDP ? SOCK_DGRAM : SOCK_STREAM; hints.ai_protocol = proto == MBEDTLS_NET_PROTO_UDP ? IPPROTO_UDP : IPPROTO_TCP; //get pdp result memset(&info, 0x00, sizeof(ql_data_call_info_s)); ret = ql_get_data_call_info(nSim, profile_idx, &info); if (ret != 0) { Log_d("ql_get_data_call_info ret: %d", ret); ql_stop_data_call(nSim, profile_idx); return MBEDTLS_ERR_NET_UNKNOWN_HOST; } //get server ip by dns #ifdef CONFIG_QUEC_PROJECT_FEATURE_DNS if (getaddrinfo_with_pcid(host, NULL, &hints, &addr_list, (uint32)profile_idx) != 0) #else if (getaddrinfo(host, port, &hints, &addr_list) != 0) #endif { Log_d("getaddrinfo_with_pcid error"); return MBEDTLS_ERR_NET_UNKNOWN_HOST; } /* Try the sockaddrs until a connection succeeds */ ret = MBEDTLS_ERR_NET_UNKNOWN_HOST; for (cur = addr_list; cur != NULL; cur = cur->ai_next) { //socket ctx->fd = (int)socket(cur->ai_family, cur->ai_socktype, cur->ai_protocol); if (ctx->fd < 0) { ret = MBEDTLS_ERR_NET_SOCKET_FAILED; continue; } if (AF_INET == cur->ai_family || AF_UNSPEC == cur->ai_family) { //printf Log_d("info->v4.state: %d", info.v4.state); Log_d("info->profile_idx: %d", info.profile_idx); Log_d("info->ip_version: %d", info.ip_version); inet_ntop(AF_INET, &info.v4.addr.ip, ip4_addr_str, sizeof(ip4_addr_str)); Log_d("info.v4.addr.ip: %s\r\n", ip4_addr_str); inet_ntop(AF_INET, &info.v4.addr.pri_dns, ip4_addr_str, sizeof(ip4_addr_str)); Log_d("info.v4.addr.pri_dns: %s\r\n", ip4_addr_str); inet_ntop(AF_INET, &info.v4.addr.sec_dns, ip4_addr_str, sizeof(ip4_addr_str)); Log_d("info.v4.addr.sec_dns: %s\r\n", ip4_addr_str); //bind memset(&local4, 0x00, sizeof(struct sockaddr_in)); local4.sin_family = AF_INET; local4.sin_port = 0; inet_aton(ip4addr_ntoa(&info.v4.addr.ip), &local4.sin_addr); Log_d("local4.sin_por=%d port=%s", local4.sin_port, port); ret = bind(ctx->fd, (struct sockaddr *)&local4, sizeof(struct sockaddr)); if (ret < 0) { close(ctx->fd); ctx->fd = -1; ret = MBEDTLS_ERR_NET_BIND_FAILED; continue; } //connect struct sockaddr_in *sin_res = (struct sockaddr_in *)cur->ai_addr; memset(&server_ipv4, 0x00, sizeof(struct sockaddr_in)); server_ipv4.sin_family = cur->ai_family; server_ipv4.sin_addr = sin_res->sin_addr; if (JudgeSystem()) { server_ipv4.sin_port = HTONS(atoi(port)); } else { server_ipv4.sin_port = atoi(port); } Log_d("server_ipv4.sin_port=%hu ctx->fd=%d", server_ipv4.sin_port, ctx->fd); ret = connect(ctx->fd, (struct sockaddr *)&server_ipv4, sizeof(server_ipv4)); if (ret == 0) { ret = 0; break; } } else //ipv6 { //bind local6.sin6_family = AF_INET6; local6.sin6_port = 0; local6.sin6_len = sizeof(struct sockaddr_in6); inet6_aton(ip6addr_ntoa(&info.v6.addr.ip), &local6.sin6_addr); ret = bind(ctx->fd, (struct sockaddr *)&local6, sizeof(struct sockaddr)); if (ret != 0) { close(ctx->fd); ctx->fd = -1; ret = MBEDTLS_ERR_NET_BIND_FAILED; continue; } //connect memcpy(&server_ipv6, (struct sockaddr_in6 *)cur->ai_addr, sizeof(struct sockaddr_in6)); server_ipv6.sin6_family = AF_INET6; if (JudgeSystem()) { server_ipv6.sin6_port = HTONS(atoi(port)); } else { server_ipv6.sin6_port = atoi(port); } inet_ntop(AF_INET6, &server_ipv6.sin6_addr, ip6_addr_str, sizeof(ip6_addr_str)); ret = connect(ctx->fd, (struct sockaddr *)&server_ipv6, sizeof(server_ipv6)); if (ret == 0) { ret = 0; break; } } close(ctx->fd); ret = MBEDTLS_ERR_NET_CONNECT_FAILED; } freeaddrinfo(addr_list); return (ret); } #else int mbedtls_net_connect( mbedtls_net_context *ctx, const char *host, const char *port, int proto ) { int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; struct addrinfo hints, *addr_list, *cur; if( ( ret = net_prepare() ) != 0 ) return( ret ); /* Do name resolution with both IPv6 and IPv4 */ memset( &hints, 0, sizeof( hints ) ); hints.ai_family = AF_UNSPEC; hints.ai_socktype = proto == MBEDTLS_NET_PROTO_UDP ? SOCK_DGRAM : SOCK_STREAM; hints.ai_protocol = proto == MBEDTLS_NET_PROTO_UDP ? IPPROTO_UDP : IPPROTO_TCP; if( getaddrinfo( host, port, &hints, &addr_list ) != 0 ) return( MBEDTLS_ERR_NET_UNKNOWN_HOST ); /* Try the sockaddrs until a connection succeeds */ ret = MBEDTLS_ERR_NET_UNKNOWN_HOST; for( cur = addr_list; cur != NULL; cur = cur->ai_next ) { ctx->fd = (int) socket( cur->ai_family, cur->ai_socktype, cur->ai_protocol ); if( ctx->fd < 0 ) { ret = MBEDTLS_ERR_NET_SOCKET_FAILED; continue; } if( connect( ctx->fd, cur->ai_addr, MSVC_INT_CAST cur->ai_addrlen ) == 0 ) { ret = 0; break; } close( ctx->fd ); ret = MBEDTLS_ERR_NET_CONNECT_FAILED; } freeaddrinfo( addr_list ); return( ret ); } #endif /*QUEC_MBEDTLS_NET_CONNECT*/ /* * 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 n, ret; struct addrinfo hints, *addr_list, *cur; if( ( ret = net_prepare() ) != 0 ) return( ret ); /* Bind to IPv6 and/or IPv4, but only in the desired protocol */ memset( &hints, 0, sizeof( hints ) ); hints.ai_family = AF_UNSPEC; hints.ai_socktype = proto == MBEDTLS_NET_PROTO_UDP ? SOCK_DGRAM : SOCK_STREAM; hints.ai_protocol = proto == MBEDTLS_NET_PROTO_UDP ? IPPROTO_UDP : IPPROTO_TCP; if( bind_ip == NULL ) hints.ai_flags = AI_PASSIVE; if( getaddrinfo( bind_ip, port, &hints, &addr_list ) != 0 ) return( MBEDTLS_ERR_NET_UNKNOWN_HOST ); /* Try the sockaddrs until a binding succeeds */ ret = MBEDTLS_ERR_NET_UNKNOWN_HOST; for( cur = addr_list; cur != NULL; cur = cur->ai_next ) { ctx->fd = (int) socket( cur->ai_family, cur->ai_socktype, cur->ai_protocol ); if( ctx->fd < 0 ) { ret = MBEDTLS_ERR_NET_SOCKET_FAILED; continue; } n = 1; if( setsockopt( ctx->fd, SOL_SOCKET, SO_REUSEADDR, (const char *) &n, sizeof( n ) ) != 0 ) { close( ctx->fd ); ret = MBEDTLS_ERR_NET_SOCKET_FAILED; continue; } if( bind( ctx->fd, cur->ai_addr, MSVC_INT_CAST cur->ai_addrlen ) != 0 ) { close( ctx->fd ); ret = MBEDTLS_ERR_NET_BIND_FAILED; continue; } /* Listen only makes sense for TCP */ if( proto == MBEDTLS_NET_PROTO_TCP ) { if( listen( ctx->fd, MBEDTLS_NET_LISTEN_BACKLOG ) != 0 ) { close( ctx->fd ); ret = MBEDTLS_ERR_NET_LISTEN_FAILED; continue; } } /* Bind was successful */ ret = 0; break; } freeaddrinfo( addr_list ); return( ret ); } #if ( defined(_WIN32) || defined(_WIN32_WCE) ) && !defined(EFIX64) && \ !defined(EFI32) /* * Check if the requested operation would be blocking on a non-blocking socket * and thus 'failed' with a negative return value. */ static int net_would_block( const mbedtls_net_context *ctx ) { ((void) ctx); return( WSAGetLastError() == WSAEWOULDBLOCK ); } #else /* * 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 ) { int err = errno; /* * Never return 'WOULD BLOCK' on a blocking socket */ #ifdef CONFIG_QUEC_PROJECT_FEATURE_SSL if ((fcntl(ctx->fd, F_GETFL, 0) & O_NONBLOCK) != O_NONBLOCK) #else if( ( fcntl( ctx->fd, F_GETFL ) & O_NONBLOCK ) != O_NONBLOCK ) #endif { errno = err; return( 0 ); } switch( errno = err ) { #if defined EAGAIN case EAGAIN: #endif #if defined EWOULDBLOCK && EWOULDBLOCK != EAGAIN case EWOULDBLOCK: #endif return( 1 ); } return( 0 ); } #endif /* ( _WIN32 || _WIN32_WCE ) && !EFIX64 && !EFI32 */ /* * 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; int type; struct sockaddr_storage client_addr; #if defined(__socklen_t_defined) || defined(_SOCKLEN_T) || \ defined(_SOCKLEN_T_DECLARED) || defined(__DEFINED_socklen_t) || \ defined(socklen_t) || (defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L) socklen_t n = (socklen_t) sizeof( client_addr ); socklen_t type_len = (socklen_t) sizeof( type ); #else int n = (int) sizeof( client_addr ); int type_len = (int) sizeof( type ); #endif /* Is this a TCP or UDP socket? */ if( getsockopt( bind_ctx->fd, SOL_SOCKET, SO_TYPE, (void *) &type, &type_len ) != 0 || ( type != SOCK_STREAM && type != SOCK_DGRAM ) ) { return( MBEDTLS_ERR_NET_ACCEPT_FAILED ); } if( type == SOCK_STREAM ) { /* TCP: actual accept() */ ret = client_ctx->fd = (int) accept( bind_ctx->fd, (struct sockaddr *) &client_addr, &n ); } else { /* UDP: wait for a message, but keep it in the queue */ char buf[1] = { 0 }; ret = (int) recvfrom( bind_ctx->fd, buf, sizeof( buf ), MSG_PEEK, (struct sockaddr *) &client_addr, &n ); #if defined(_WIN32) if( ret == SOCKET_ERROR && WSAGetLastError() == WSAEMSGSIZE ) { /* We know buf is too small, thanks, just peeking here */ ret = 0; } #endif } if( ret < 0 ) { if( net_would_block( bind_ctx ) != 0 ) return( MBEDTLS_ERR_SSL_WANT_READ ); return( MBEDTLS_ERR_NET_ACCEPT_FAILED ); } /* UDP: hijack the listening socket to communicate with the client, * then bind a new socket to accept new connections */ if( type != SOCK_STREAM ) { struct sockaddr_storage local_addr; int one = 1; if( connect( bind_ctx->fd, (struct sockaddr *) &client_addr, n ) != 0 ) return( MBEDTLS_ERR_NET_ACCEPT_FAILED ); client_ctx->fd = bind_ctx->fd; bind_ctx->fd = -1; /* In case we exit early */ n = sizeof( struct sockaddr_storage ); if( getsockname( client_ctx->fd, (struct sockaddr *) &local_addr, &n ) != 0 || ( bind_ctx->fd = (int) socket( local_addr.ss_family, SOCK_DGRAM, IPPROTO_UDP ) ) < 0 || setsockopt( bind_ctx->fd, SOL_SOCKET, SO_REUSEADDR, (const char *) &one, sizeof( one ) ) != 0 ) { return( MBEDTLS_ERR_NET_SOCKET_FAILED ); } if( bind( bind_ctx->fd, (struct sockaddr *) &local_addr, n ) != 0 ) { return( MBEDTLS_ERR_NET_BIND_FAILED ); } } if( client_ip != NULL ) { if( client_addr.ss_family == AF_INET ) { struct sockaddr_in *addr4 = (struct sockaddr_in *) &client_addr; *ip_len = sizeof( addr4->sin_addr.s_addr ); if( buf_size < *ip_len ) return( MBEDTLS_ERR_NET_BUFFER_TOO_SMALL ); memcpy( client_ip, &addr4->sin_addr.s_addr, *ip_len ); } else { #ifdef CONFIG_QUEC_PROJECT_FEATURE_SSL #if LWIP_IPV6 struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) &client_addr; *ip_len = sizeof( addr6->sin6_addr.s6_addr ); if( buf_size < *ip_len ) return( MBEDTLS_ERR_NET_BUFFER_TOO_SMALL ); memcpy( client_ip, &addr6->sin6_addr.s6_addr, *ip_len); #endif #endif/*CONFIG_QUEC_PROJECT_FEATURE_SSL*/ } } return( 0 ); } /* * Set the socket blocking or non-blocking */ int mbedtls_net_set_block( mbedtls_net_context *ctx ) { #if ( defined(_WIN32) || defined(_WIN32_WCE) ) && !defined(EFIX64) && \ !defined(EFI32) u_long n = 0; return( ioctlsocket( ctx->fd, FIONBIO, &n ) ); #else #ifdef CONFIG_QUEC_PROJECT_FEATURE_SSL return (fcntl(ctx->fd, F_SETFL, fcntl(ctx->fd, F_GETFL, 0) & ~O_NONBLOCK)); #else return( fcntl( ctx->fd, F_SETFL, fcntl( ctx->fd, F_GETFL ) & ~O_NONBLOCK ) ); #endif /*CONFIG_QUEC_PROJECT_FEATURE_SSL*/ #endif } int mbedtls_net_set_nonblock( mbedtls_net_context *ctx ) { #if ( defined(_WIN32) || defined(_WIN32_WCE) ) && !defined(EFIX64) && \ !defined(EFI32) u_long n = 1; return( ioctlsocket( ctx->fd, FIONBIO, &n ) ); #else #ifdef CONFIG_QUEC_PROJECT_FEATURE_SSL return (fcntl(ctx->fd, F_SETFL, fcntl(ctx->fd, F_GETFL, 0) | O_NONBLOCK)); #else return( fcntl( ctx->fd, F_SETFL, fcntl( ctx->fd, F_GETFL ) | O_NONBLOCK ) ); #endif /*CONFIG_QUEC_PROJECT_FEATURE_SSL*/ #endif } /* * Check if data is available on the socket */ int mbedtls_net_poll( mbedtls_net_context *ctx, uint32_t rw, uint32_t timeout ) { int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; struct timeval tv; fd_set read_fds; fd_set write_fds; int fd = ctx->fd; ret = check_fd( fd, 1 ); if( ret != 0 ) return( ret ); #if defined(__has_feature) #if __has_feature(memory_sanitizer) /* Ensure that memory sanitizers consider read_fds and write_fds as * initialized even on platforms such as Glibc/x86_64 where FD_ZERO * is implemented in assembly. */ memset( &read_fds, 0, sizeof( read_fds ) ); memset( &write_fds, 0, sizeof( write_fds ) ); #endif #endif FD_ZERO( &read_fds ); if( rw & MBEDTLS_NET_POLL_READ ) { rw &= ~MBEDTLS_NET_POLL_READ; FD_SET( fd, &read_fds ); } FD_ZERO( &write_fds ); if( rw & MBEDTLS_NET_POLL_WRITE ) { rw &= ~MBEDTLS_NET_POLL_WRITE; FD_SET( fd, &write_fds ); } if( rw != 0 ) return( MBEDTLS_ERR_NET_BAD_INPUT_DATA ); tv.tv_sec = timeout / 1000; tv.tv_usec = ( timeout % 1000 ) * 1000; do { ret = select( fd + 1, &read_fds, &write_fds, NULL, timeout == (uint32_t) -1 ? NULL : &tv ); } while( IS_EINTR( ret ) ); if( ret < 0 ) return( MBEDTLS_ERR_NET_POLL_FAILED ); ret = 0; if( FD_ISSET( fd, &read_fds ) ) ret |= MBEDTLS_NET_POLL_READ; if( FD_ISSET( fd, &write_fds ) ) ret |= MBEDTLS_NET_POLL_WRITE; return( ret ); } /* * Portable usleep helper */ void mbedtls_net_usleep( unsigned long usec ) { #if defined(_WIN32) Sleep( ( usec + 999 ) / 1000 ); #else struct timeval tv; tv.tv_sec = usec / 1000000; #if defined(__unix__) || defined(__unix) || \ ( defined(__APPLE__) && defined(__MACH__) ) tv.tv_usec = (suseconds_t) usec % 1000000; #else tv.tv_usec = usec % 1000000; #endif select( 0, NULL, NULL, NULL, &tv ); #endif } /* * Read at most 'len' characters */ int mbedtls_net_recv( void *ctx, unsigned char *buf, size_t len ) { int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; int fd = ((mbedtls_net_context *) ctx)->fd; ret = check_fd( fd, 0 ); if( ret != 0 ) return( ret ); ret = (int) read( fd, buf, len ); if( ret < 0 ) { if( net_would_block( ctx ) != 0 ) return( MBEDTLS_ERR_SSL_WANT_READ ); #if ( defined(_WIN32) || defined(_WIN32_WCE) ) && !defined(EFIX64) && \ !defined(EFI32) if( WSAGetLastError() == WSAECONNRESET ) return( MBEDTLS_ERR_NET_CONN_RESET ); #else if( errno == EPIPE || errno == ECONNRESET ) return( MBEDTLS_ERR_NET_CONN_RESET ); if( errno == EINTR ) return( MBEDTLS_ERR_SSL_WANT_READ ); #endif return( MBEDTLS_ERR_NET_RECV_FAILED ); } 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; struct timeval tv; fd_set read_fds; int fd = ((mbedtls_net_context *) ctx)->fd; ret = check_fd( fd, 1 ); if( ret != 0 ) return( ret ); FD_ZERO( &read_fds ); FD_SET( fd, &read_fds ); tv.tv_sec = timeout / 1000; tv.tv_usec = ( timeout % 1000 ) * 1000; ret = select( fd + 1, &read_fds, NULL, NULL, timeout == 0 ? NULL : &tv ); /* Zero fds ready means we timed out */ if( ret == 0 ) return( MBEDTLS_ERR_SSL_TIMEOUT ); if( ret < 0 ) { #if ( defined(_WIN32) || defined(_WIN32_WCE) ) && !defined(EFIX64) && \ !defined(EFI32) if( WSAGetLastError() == WSAEINTR ) return( MBEDTLS_ERR_SSL_WANT_READ ); #else if( errno == EINTR ) return( MBEDTLS_ERR_SSL_WANT_READ ); #endif return( MBEDTLS_ERR_NET_RECV_FAILED ); } /* 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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; int fd = ((mbedtls_net_context *) ctx)->fd; ret = check_fd( fd, 0 ); if( ret != 0 ) return( ret ); ret = (int) write( fd, buf, len ); if( ret < 0 ) { if( net_would_block( ctx ) != 0 ) return( MBEDTLS_ERR_SSL_WANT_WRITE ); #if ( defined(_WIN32) || defined(_WIN32_WCE) ) && !defined(EFIX64) && \ !defined(EFI32) if( WSAGetLastError() == WSAECONNRESET ) return( MBEDTLS_ERR_NET_CONN_RESET ); #else if( errno == EPIPE || errno == ECONNRESET ) return( MBEDTLS_ERR_NET_CONN_RESET ); if( errno == EINTR ) return( MBEDTLS_ERR_SSL_WANT_WRITE ); #endif return( MBEDTLS_ERR_NET_SEND_FAILED ); } return( ret ); } /* * Close the connection */ void mbedtls_net_close( mbedtls_net_context *ctx ) { if( ctx->fd == -1 ) return; close( ctx->fd ); ctx->fd = -1; } /* * Gracefully close the connection */ void mbedtls_net_free( mbedtls_net_context *ctx ) { if( ctx->fd == -1 ) return; shutdown( ctx->fd, 2 ); close( ctx->fd ); ctx->fd = -1; } #endif /* MBEDTLS_NET_C */