diff options
Diffstat (limited to 'thirdparty/mbedtls/library/net_sockets.c')
| -rw-r--r-- | thirdparty/mbedtls/library/net_sockets.c | 89 |
1 files changed, 76 insertions, 13 deletions
diff --git a/thirdparty/mbedtls/library/net_sockets.c b/thirdparty/mbedtls/library/net_sockets.c index 5d538bfd56..1e701a5000 100644 --- a/thirdparty/mbedtls/library/net_sockets.c +++ b/thirdparty/mbedtls/library/net_sockets.c @@ -1,8 +1,14 @@ /* * TCP/IP or UDP/IP networking functions * - * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved - * SPDX-License-Identifier: Apache-2.0 + * Copyright The Mbed TLS Contributors + * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later + * + * This file is provided under the Apache License 2.0, or the + * GNU General Public License v2.0 or later. + * + * ********** + * Apache License 2.0: * * Licensed under the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. @@ -16,13 +22,40 @@ * 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) + * ********** + * + * ********** + * GNU General Public License v2.0 or later: + * + * 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. + * + * 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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * ********** */ /* 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 + +#if defined(__NetBSD__) +#ifndef _XOPEN_SOURCE +#define _XOPEN_SOURCE 600 /* sockaddr_storage */ +#endif +#endif #if !defined(MBEDTLS_CONFIG_FILE) #include "mbedtls/config.h" @@ -134,6 +167,31 @@ static int net_prepare( void ) } /* + * 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 ) @@ -318,8 +376,9 @@ int mbedtls_net_accept( mbedtls_net_context *bind_ctx, struct sockaddr_storage client_addr; -#if defined(__socklen_t_defined) || defined(_SOCKLEN_T) || \ - defined(_SOCKLEN_T_DECLARED) || defined(__DEFINED_socklen_t) +#if defined(__socklen_t_defined) || defined(_SOCKLEN_T) || \ + defined(_SOCKLEN_T_DECLARED) || defined(__DEFINED_socklen_t) || \ + ( defined(__NetBSD__) && defined(socklen_t) ) socklen_t n = (socklen_t) sizeof( client_addr ); socklen_t type_len = (socklen_t) sizeof( type ); #else @@ -463,8 +522,9 @@ int mbedtls_net_poll( mbedtls_net_context *ctx, uint32_t rw, uint32_t timeout ) int fd = ctx->fd; - if( fd < 0 ) - return( MBEDTLS_ERR_NET_INVALID_CONTEXT ); + ret = check_fd( fd, 1 ); + if( ret != 0 ) + return( ret ); #if defined(__has_feature) #if __has_feature(memory_sanitizer) @@ -543,8 +603,9 @@ 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 ); + ret = check_fd( fd, 0 ); + if( ret != 0 ) + return( ret ); ret = (int) read( fd, buf, len ); @@ -582,8 +643,9 @@ int mbedtls_net_recv_timeout( void *ctx, unsigned char *buf, fd_set read_fds; int fd = ((mbedtls_net_context *) ctx)->fd; - if( fd < 0 ) - return( MBEDTLS_ERR_NET_INVALID_CONTEXT ); + ret = check_fd( fd, 1 ); + if( ret != 0 ) + return( ret ); FD_ZERO( &read_fds ); FD_SET( fd, &read_fds ); @@ -623,8 +685,9 @@ 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 ); + ret = check_fd( fd, 0 ); + if( ret != 0 ) + return( ret ); ret = (int) write( fd, buf, len ); |