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Add option 'bad_ad' to udp_proxy

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Manuel Pégourié-Gonnard 2014-09-08 11:24:58 +02:00 committed by Paul Bakker
parent eb00bfd9c2
commit 6c18a39807
1 changed files with 24 additions and 0 deletions
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24
programs/test/udp_proxy.c
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@ -90,6 +90,7 @@ int main( void )
" drop 1 packet every N packets\n" \
" mtu=%%d default: 0 (unlimited)\n" \
" drop packets larger than N bytes\n" \
" bad_ad=%%d default: 0 (don't add bad ApplicationData)\n" \
"\n"
/*
@ -107,6 +108,7 @@ static struct options
int delay_ccs; /* delay ChangeCipherSpec */
int drop; /* drop 1 packet in N (none if 0) */
int mtu; /* drop packets larger than this */
int bad_ad; /* inject corrupted ApplicationData record */
} opt;
/*
@ -206,6 +208,12 @@ static void get_options( int argc, char *argv[] )
if( opt.mtu < 0 || opt.mtu > MAX_MSG_SIZE )
exit_usage( p, q );
}
else if( strcmp( p, "bad_ad" ) == 0 )
{
opt.bad_ad = atoi( q );
if( opt.bad_ad < 0 || opt.bad_ad > 1 )
exit_usage( p, q );
}
else
exit_usage( p, NULL );
}
@ -265,6 +273,22 @@ int send_packet( const packet *p, const char *why )
{
int ret;
/* insert corrupted ApplicationData record? */
if( opt.bad_ad &&
strcmp( p->type, "ApplicationData" ) == 0 )
{
unsigned char buf[MAX_MSG_SIZE];
memcpy( buf, p->buf, p->len );
++buf[p->len - 1];
print_packet( p, "corrupted" );
if( ( ret = net_send( p->dst, buf, p->len ) ) <= 0 )
{
printf( " ! net_send returned %d\n", ret );
return( ret );
}
}
print_packet( p, why );
if( ( ret = net_send( p->dst, p->buf, p->len ) ) <= 0 )
{