d901d17817
* development: (100 commits) Update Changelog for the mem-measure branch Fix issues introduced when rebasing Fix compile error in memory_buffer_alloc_selftest Code cosmetics Add curve25519 to ecc-heap.sh Add curve25519 to the benchmark program Fix compile issue when buffer_alloc not available New script ecc-heap.sh Fix unused variable issue in some configs Rm usunused member in private struct Add heap usage for PK in benchmark Use memory_buffer_alloc() in benchmark if available Only define mode_func if mode is enabled (CBC etc) PKCS8 encrypted key depend on PKCS5 or PKCS12 Disable SRV_C for client measurement Output stack+heap usage with massif Enable NIST_OPTIM by default for config-suite-b Refactor memory.sh Adapt memory.sh to config-suite-b Adapt mini-client for config-suite-b.h ... Conflicts: ChangeLog include/polarssl/net.h library/Makefile library/error.c library/ssl_tls.c programs/Makefile programs/ssl/ssl_client2.c programs/ssl/ssl_server2.c tests/Makefile
629 lines
19 KiB
C
629 lines
19 KiB
C
/*
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* UDP proxy: emulate an unreliable UDP connexion for DTLS testing
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*
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* Copyright (C) 2006-2014, Brainspark B.V.
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*
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* This file is part of mbed TLS (https://polarssl.org)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#if !defined(POLARSSL_CONFIG_FILE)
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#include "polarssl/config.h"
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#else
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#include POLARSSL_CONFIG_FILE
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#endif
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#if defined(POLARSSL_PLATFORM_C)
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#include "polarssl/platform.h"
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#else
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#define polarssl_printf printf
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#endif
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#if !defined(POLARSSL_NET_C)
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#include <stdio.h>
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int main( void )
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{
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polarssl_printf( "POLARSSL_NET_C not defined.\n" );
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return( 0 );
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}
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#else
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#include "polarssl/net.h"
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#include "polarssl/error.h"
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#include "polarssl/ssl.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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/* For select() */
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#if (defined(_WIN32) || defined(_WIN32_WCE)) && !defined(EFIX64) && \
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!defined(EFI32)
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#include <winsock2.h>
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#include <windows.h>
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#if defined(_MSC_VER)
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#if defined(_WIN32_WCE)
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#pragma comment( lib, "ws2.lib" )
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#else
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#pragma comment( lib, "ws2_32.lib" )
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#endif
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#endif /* _MSC_VER */
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#else /* ( _WIN32 || _WIN32_WCE ) && !EFIX64 && !EFI32 */
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#include <sys/time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#endif /* ( _WIN32 || _WIN32_WCE ) && !EFIX64 && !EFI32 */
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/* For gettimeofday() */
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#if !defined(_WIN32)
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#include <sys/time.h>
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#endif
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#define MAX_MSG_SIZE 16384 + 2048 /* max record/datagram size */
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#define DFL_SERVER_ADDR "localhost"
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#define DFL_SERVER_PORT 4433
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#define DFL_LISTEN_ADDR "localhost"
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#define DFL_LISTEN_PORT 5556
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#define USAGE \
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"\n usage: udp_proxy param=<>...\n" \
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"\n acceptable parameters:\n" \
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" server_addr=%%s default: localhost\n" \
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" server_port=%%d default: 4433\n" \
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" listen_addr=%%s default: localhost\n" \
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" listen_port=%%d default: 4433\n" \
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"\n" \
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" duplicate=%%d default: 0 (no duplication)\n" \
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" duplicate about 1:N packets randomly\n" \
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" delay=%%d default: 0 (no delayed packets)\n" \
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" delay about 1:N packets randomly\n" \
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" delay_ccs=0/1 default: 0 (don't delay ChangeCipherSpec)\n" \
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" drop=%%d default: 0 (no dropped packets)\n" \
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" drop about 1:N packets randomly\n" \
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" mtu=%%d default: 0 (unlimited)\n" \
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" drop packets larger than N bytes\n" \
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" bad_ad=0/1 default: 0 (don't add bad ApplicationData)\n" \
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" protect_hvr=0/1 default: 0 (don't protect HelloVerifyRequest)\n" \
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" protect_len=%%d default: (don't protect packets of this size)\n" \
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"\n" \
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" seed=%%d default: (use current time)\n" \
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"\n"
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/*
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* global options
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*/
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static struct options
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{
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const char *server_addr; /* address to forward packets to */
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int server_port; /* port to forward packets to */
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const char *listen_addr; /* address for accepting client connections */
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int listen_port; /* port for accepting client connections */
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int duplicate; /* duplicate 1 in N packets (none if 0) */
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int delay; /* delay 1 packet in N (none if 0) */
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int delay_ccs; /* delay ChangeCipherSpec */
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int drop; /* drop 1 packet in N (none if 0) */
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int mtu; /* drop packets larger than this */
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int bad_ad; /* inject corrupted ApplicationData record */
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int protect_hvr; /* never drop or delay HelloVerifyRequest */
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int protect_len; /* never drop/delay packet of the given size*/
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unsigned int seed; /* seed for "random" events */
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} opt;
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static void exit_usage( const char *name, const char *value )
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{
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if( value == NULL )
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polarssl_printf( " unknown option or missing value: %s\n", name );
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else
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polarssl_printf( " option %s: illegal value: %s\n", name, value );
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polarssl_printf( USAGE );
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exit( 1 );
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}
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static void get_options( int argc, char *argv[] )
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{
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int i;
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char *p, *q;
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opt.server_addr = DFL_SERVER_ADDR;
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opt.server_port = DFL_SERVER_PORT;
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opt.listen_addr = DFL_LISTEN_ADDR;
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opt.listen_port = DFL_LISTEN_PORT;
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/* Other members default to 0 */
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for( i = 1; i < argc; i++ )
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{
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p = argv[i];
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if( ( q = strchr( p, '=' ) ) == NULL )
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exit_usage( p, NULL );
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*q++ = '\0';
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if( strcmp( p, "server_addr" ) == 0 )
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opt.server_addr = q;
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else if( strcmp( p, "server_port" ) == 0 )
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{
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opt.server_port = atoi( q );
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if( opt.server_port < 1 || opt.server_port > 65535 )
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exit_usage( p, q );
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}
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else if( strcmp( p, "listen_addr" ) == 0 )
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opt.listen_addr = q;
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else if( strcmp( p, "listen_port" ) == 0 )
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{
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opt.listen_port = atoi( q );
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if( opt.listen_port < 1 || opt.listen_port > 65535 )
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exit_usage( p, q );
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}
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else if( strcmp( p, "duplicate" ) == 0 )
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{
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opt.duplicate = atoi( q );
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if( opt.duplicate < 0 || opt.duplicate > 20 )
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exit_usage( p, q );
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}
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else if( strcmp( p, "delay" ) == 0 )
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{
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opt.delay = atoi( q );
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if( opt.delay < 0 || opt.delay > 20 || opt.delay == 1 )
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exit_usage( p, q );
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}
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else if( strcmp( p, "delay_ccs" ) == 0 )
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{
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opt.delay_ccs = atoi( q );
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if( opt.delay_ccs < 0 || opt.delay_ccs > 1 )
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exit_usage( p, q );
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}
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else if( strcmp( p, "drop" ) == 0 )
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{
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opt.drop = atoi( q );
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if( opt.drop < 0 || opt.drop > 20 || opt.drop == 1 )
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exit_usage( p, q );
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}
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else if( strcmp( p, "mtu" ) == 0 )
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{
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opt.mtu = atoi( q );
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if( opt.mtu < 0 || opt.mtu > MAX_MSG_SIZE )
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exit_usage( p, q );
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}
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else if( strcmp( p, "bad_ad" ) == 0 )
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{
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opt.bad_ad = atoi( q );
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if( opt.bad_ad < 0 || opt.bad_ad > 1 )
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exit_usage( p, q );
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}
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else if( strcmp( p, "protect_hvr" ) == 0 )
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{
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opt.protect_hvr = atoi( q );
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if( opt.protect_hvr < 0 || opt.protect_hvr > 1 )
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exit_usage( p, q );
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}
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else if( strcmp( p, "protect_len" ) == 0 )
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{
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opt.protect_len = atoi( q );
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if( opt.protect_len < 0 )
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exit_usage( p, q );
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}
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else if( strcmp( p, "seed" ) == 0 )
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{
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opt.seed = atoi( q );
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if( opt.seed == 0 )
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exit_usage( p, q );
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}
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else
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exit_usage( p, NULL );
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}
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}
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static const char *msg_type( unsigned char *msg, size_t len )
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{
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if( len < 1 ) return( "Invalid" );
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switch( msg[0] )
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{
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case SSL_MSG_CHANGE_CIPHER_SPEC: return( "ChangeCipherSpec" );
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case SSL_MSG_ALERT: return( "Alert" );
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case SSL_MSG_APPLICATION_DATA: return( "ApplicationData" );
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case SSL_MSG_HANDSHAKE: break; /* See below */
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default: return( "Unknown" );
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}
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if( len < 13 + 12 ) return( "Invalid handshake" );
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/*
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* Our handshake message are less than 2^16 bytes long, so they should
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* have 0 as the first byte of length, frag_offset and frag_length.
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* Otherwise, assume they are encrypted.
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*/
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if( msg[14] || msg[19] || msg[22] ) return( "Encrypted handshake" );
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switch( msg[13] )
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{
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case SSL_HS_HELLO_REQUEST: return( "HelloRequest" );
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case SSL_HS_CLIENT_HELLO: return( "ClientHello" );
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case SSL_HS_SERVER_HELLO: return( "ServerHello" );
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case SSL_HS_HELLO_VERIFY_REQUEST: return( "HelloVerifyRequest" );
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case SSL_HS_NEW_SESSION_TICKET: return( "NewSessionTicket" );
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case SSL_HS_CERTIFICATE: return( "Certificate" );
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case SSL_HS_SERVER_KEY_EXCHANGE: return( "ServerKeyExchange" );
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case SSL_HS_CERTIFICATE_REQUEST: return( "CertificateRequest" );
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case SSL_HS_SERVER_HELLO_DONE: return( "ServerHelloDone" );
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case SSL_HS_CERTIFICATE_VERIFY: return( "CertificateVerify" );
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case SSL_HS_CLIENT_KEY_EXCHANGE: return( "ClientKeyExchange" );
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case SSL_HS_FINISHED: return( "Finished" );
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default: return( "Unknown handshake" );
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}
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}
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/* Return elapsed time in milliseconds since the first call */
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static unsigned long ellapsed_time( void )
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{
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#if defined(_WIN32)
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return( 0 );
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#else
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static struct timeval ref = { 0, 0 };
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struct timeval now;
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if( ref.tv_sec == 0 && ref.tv_usec == 0 )
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{
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gettimeofday( &ref, NULL );
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return( 0 );
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}
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gettimeofday( &now, NULL );
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return( 1000 * ( now.tv_sec - ref.tv_sec )
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+ ( now.tv_usec - ref.tv_usec ) / 1000 );
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#endif
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}
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typedef struct
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{
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int dst;
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const char *way;
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const char *type;
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unsigned len;
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unsigned char buf[MAX_MSG_SIZE];
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} packet;
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/* Print packet. Outgoing packets come with a reason (forward, dupl, etc.) */
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void print_packet( const packet *p, const char *why )
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{
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if( why == NULL )
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polarssl_printf( " %05lu %s %s (%u bytes)\n",
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ellapsed_time(), p->way, p->type, p->len );
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else
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polarssl_printf( " %s %s (%u bytes): %s\n",
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p->way, p->type, p->len, why );
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fflush( stdout );
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}
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int send_packet( const packet *p, const char *why )
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{
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int ret;
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int dst = p->dst;
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/* insert corrupted ApplicationData record? */
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if( opt.bad_ad &&
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strcmp( p->type, "ApplicationData" ) == 0 )
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{
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unsigned char buf[MAX_MSG_SIZE];
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memcpy( buf, p->buf, p->len );
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++buf[p->len - 1];
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print_packet( p, "corrupted" );
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if( ( ret = net_send( &dst, buf, p->len ) ) <= 0 )
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{
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polarssl_printf( " ! net_send returned %d\n", ret );
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return( ret );
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}
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}
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print_packet( p, why );
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if( ( ret = net_send( &dst, p->buf, p->len ) ) <= 0 )
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{
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polarssl_printf( " ! net_send returned %d\n", ret );
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return( ret );
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}
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/* Don't duplicate Application Data, only handshake covered */
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if( opt.duplicate != 0 &&
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strcmp( p->type, "ApplicationData" ) != 0 &&
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rand() % opt.duplicate == 0 )
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{
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print_packet( p, "duplicated" );
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if( ( ret = net_send( &dst, p->buf, p->len ) ) <= 0 )
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{
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polarssl_printf( " ! net_send returned %d\n", ret );
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return( ret );
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}
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}
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return( 0 );
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}
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static packet prev;
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void clear_pending( void )
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{
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memset( &prev, 0, sizeof( packet ) );
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}
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/*
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* Avoid dropping or delaying a packet that was already dropped twice: this
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* only results in uninteresting timeouts. We can't rely on type to identify
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* packets, since during renegotiation they're all encrypted. So, rely on
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* size mod 2048 (which is usually just size).
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*/
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static unsigned char dropped[2048] = { 0 };
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#define DROP_MAX 2
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/*
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* OpenSSL groups packets in a datagram the first time it sends them, but not
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* when it resends them. Count every record as seen the first time.
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*/
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void update_dropped( const packet *p )
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{
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size_t id = p->len % sizeof( dropped );
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const unsigned char *end = p->buf + p->len;
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const unsigned char *cur = p->buf;
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size_t len = ( ( cur[11] << 8 ) | cur[12] ) + 13;
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++dropped[id];
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/* Avoid counting single record twice */
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if( len == p->len )
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return;
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while( cur < end )
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{
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size_t len = ( ( cur[11] << 8 ) | cur[12] ) + 13;
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id = len % sizeof( dropped );
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++dropped[id];
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cur += len;
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}
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}
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int handle_message( const char *way, int dst, int src )
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{
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int ret;
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packet cur;
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size_t id;
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/* receive packet */
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if( ( ret = net_recv( &src, cur.buf, sizeof( cur.buf ) ) ) <= 0 )
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{
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polarssl_printf( " ! net_recv returned %d\n", ret );
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return( ret );
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}
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cur.len = ret;
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cur.type = msg_type( cur.buf, cur.len );
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cur.way = way;
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cur.dst = dst;
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print_packet( &cur, NULL );
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id = cur.len % sizeof( dropped );
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/* do we want to drop, delay, or forward it? */
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if( ( opt.mtu != 0 &&
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cur.len > (unsigned) opt.mtu ) ||
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( opt.drop != 0 &&
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strcmp( cur.type, "ApplicationData" ) != 0 &&
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! ( opt.protect_hvr &&
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strcmp( cur.type, "HelloVerifyRequest" ) == 0 ) &&
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cur.len != (size_t) opt.protect_len &&
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dropped[id] < DROP_MAX &&
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rand() % opt.drop == 0 ) )
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{
|
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update_dropped( &cur );
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}
|
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else if( ( opt.delay_ccs == 1 &&
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strcmp( cur.type, "ChangeCipherSpec" ) == 0 ) ||
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( opt.delay != 0 &&
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strcmp( cur.type, "ApplicationData" ) != 0 &&
|
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! ( opt.protect_hvr &&
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strcmp( cur.type, "HelloVerifyRequest" ) == 0 ) &&
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prev.dst == 0 &&
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cur.len != (size_t) opt.protect_len &&
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dropped[id] < DROP_MAX &&
|
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rand() % opt.delay == 0 ) )
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{
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memcpy( &prev, &cur, sizeof( packet ) );
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}
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else
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{
|
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/* forward and possibly duplicate */
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if( ( ret = send_packet( &cur, "forwarded" ) ) != 0 )
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return( ret );
|
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|
|
/* send previously delayed message if any */
|
|
if( prev.dst != 0 )
|
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{
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ret = send_packet( &prev, "delayed" );
|
|
memset( &prev, 0, sizeof( packet ) );
|
|
if( ret != 0 )
|
|
return( ret );
|
|
}
|
|
}
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
int main( int argc, char *argv[] )
|
|
{
|
|
int ret;
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|
|
int listen_fd = -1;
|
|
int client_fd = -1;
|
|
int server_fd = -1;
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|
|
int nb_fds;
|
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fd_set read_fds;
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|
|
get_options( argc, argv );
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|
|
|
/*
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|
* Decisions to drop/delay/duplicate packets are pseudo-random: dropping
|
|
* exactly 1 in N packets would lead to problems when a flight has exactly
|
|
* N packets: the same packet would be dropped on every resend.
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|
*
|
|
* In order to be able to reproduce problems reliably, the seed may be
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* specified explicitly.
|
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*/
|
|
if( opt.seed == 0 )
|
|
{
|
|
opt.seed = time( NULL );
|
|
polarssl_printf( " . Pseudo-random seed: %u\n", opt.seed );
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|
}
|
|
|
|
srand( opt.seed );
|
|
|
|
/*
|
|
* 0. "Connect" to the server
|
|
*/
|
|
polarssl_printf( " . Connect to server on UDP/%s/%d ...",
|
|
opt.server_addr, opt.server_port );
|
|
fflush( stdout );
|
|
|
|
if( ( ret = net_connect( &server_fd, opt.server_addr, opt.server_port,
|
|
NET_PROTO_UDP ) ) != 0 )
|
|
{
|
|
polarssl_printf( " failed\n ! net_connect returned %d\n\n", ret );
|
|
goto exit;
|
|
}
|
|
|
|
polarssl_printf( " ok\n" );
|
|
|
|
/*
|
|
* 1. Setup the "listening" UDP socket
|
|
*/
|
|
polarssl_printf( " . Bind on UDP/%s/%d ...",
|
|
opt.listen_addr, opt.listen_port );
|
|
fflush( stdout );
|
|
|
|
if( ( ret = net_bind( &listen_fd, opt.listen_addr, opt.listen_port,
|
|
NET_PROTO_UDP ) ) != 0 )
|
|
{
|
|
polarssl_printf( " failed\n ! net_bind returned %d\n\n", ret );
|
|
goto exit;
|
|
}
|
|
|
|
polarssl_printf( " ok\n" );
|
|
|
|
/*
|
|
* 2. Wait until a client connects
|
|
*/
|
|
accept:
|
|
polarssl_printf( " . Waiting for a remote connection ..." );
|
|
fflush( stdout );
|
|
|
|
if( ( ret = net_accept( listen_fd, &client_fd, NULL ) ) != 0 )
|
|
{
|
|
polarssl_printf( " failed\n ! net_accept returned %d\n\n", ret );
|
|
goto exit;
|
|
}
|
|
|
|
polarssl_printf( " ok\n" );
|
|
fflush( stdout );
|
|
|
|
polarssl_printf( " . Re-bind on UDP/%s/%d ...",
|
|
opt.listen_addr, opt.listen_port );
|
|
fflush( stdout );
|
|
|
|
if( ( ret = net_bind( &listen_fd, opt.listen_addr, opt.listen_port,
|
|
NET_PROTO_UDP ) ) != 0 )
|
|
{
|
|
polarssl_printf( " failed\n ! net_bind returned %d\n\n", ret );
|
|
goto exit;
|
|
}
|
|
|
|
polarssl_printf( " ok\n" );
|
|
|
|
/*
|
|
* 3. Forward packets forever (kill the process to terminate it)
|
|
*/
|
|
clear_pending();
|
|
memset( dropped, 0, sizeof( dropped ) );
|
|
|
|
nb_fds = client_fd;
|
|
if( nb_fds < server_fd )
|
|
nb_fds = server_fd;
|
|
if( nb_fds < listen_fd )
|
|
nb_fds = listen_fd;
|
|
++nb_fds;
|
|
|
|
while( 1 )
|
|
{
|
|
FD_ZERO( &read_fds );
|
|
FD_SET( server_fd, &read_fds );
|
|
FD_SET( client_fd, &read_fds );
|
|
FD_SET( listen_fd, &read_fds );
|
|
|
|
if( ( ret = select( nb_fds, &read_fds, NULL, NULL, NULL ) ) <= 0 )
|
|
{
|
|
perror( "select" );
|
|
goto exit;
|
|
}
|
|
|
|
if( FD_ISSET( listen_fd, &read_fds ) )
|
|
goto accept;
|
|
|
|
if( FD_ISSET( client_fd, &read_fds ) )
|
|
{
|
|
if( ( ret = handle_message( "S <- C",
|
|
server_fd, client_fd ) ) != 0 )
|
|
goto accept;
|
|
}
|
|
|
|
if( FD_ISSET( server_fd, &read_fds ) )
|
|
{
|
|
if( ( ret = handle_message( "S -> C",
|
|
client_fd, server_fd ) ) != 0 )
|
|
goto accept;
|
|
}
|
|
}
|
|
|
|
exit:
|
|
|
|
#ifdef POLARSSL_ERROR_C
|
|
if( ret != 0 )
|
|
{
|
|
char error_buf[100];
|
|
polarssl_strerror( ret, error_buf, 100 );
|
|
polarssl_printf( "Last error was: -0x%04X - %s\n\n", - ret, error_buf );
|
|
fflush( stdout );
|
|
}
|
|
#endif
|
|
|
|
if( client_fd != -1 )
|
|
net_close( client_fd );
|
|
|
|
if( listen_fd != -1 )
|
|
net_close( listen_fd );
|
|
|
|
#if defined(_WIN32)
|
|
polarssl_printf( " Press Enter to exit this program.\n" );
|
|
fflush( stdout ); getchar();
|
|
#endif
|
|
|
|
return( ret != 0 );
|
|
}
|
|
|
|
#endif /* POLARSSL_NET_C */
|