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Adapt ssl_server2 to datagram-style read

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Manuel Pégourié-Gonnard 2014-10-06 18:11:43 +02:00 committed by Paul Bakker
parent 46fb942046
commit cce220d6aa
1 changed files with 108 additions and 67 deletions
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175
programs/ssl/ssl_server2.c
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@ -1748,16 +1748,111 @@ data_exchange:
printf( " < Read from client:" );
fflush( stdout );
do
/*
* TLS and DTLS need different reading styles (stream vs datagram)
*/
if( opt.transport == SSL_TRANSPORT_STREAM )
{
do
{
int terminated = 0;
len = sizeof( buf ) - 1;
memset( buf, 0, sizeof( buf ) );
ret = ssl_read( &ssl, buf, len );
if( ret == POLARSSL_ERR_NET_WANT_READ ||
ret == POLARSSL_ERR_NET_WANT_WRITE )
continue;
if( ret <= 0 )
{
switch( ret )
{
case POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY:
printf( " connection was closed gracefully\n" );
goto close_notify;
case 0:
case POLARSSL_ERR_NET_CONN_RESET:
printf( " connection was reset by peer\n" );
ret = POLARSSL_ERR_NET_CONN_RESET;
goto reset;
default:
printf( " ssl_read returned -0x%x\n", -ret );
goto reset;
}
}
if( ssl_get_bytes_avail( &ssl ) == 0 )
{
len = ret;
buf[len] = '\0';
printf( " %d bytes read\n\n%s\n", len, (char *) buf );
/* End of message should be detected according to the syntax of the
* application protocol (eg HTTP), just use a dummy test here. */
if( buf[len - 1] == '\n' )
terminated = 1;
}
else
{
int extra_len, ori_len;
unsigned char *larger_buf;
ori_len = ret;
extra_len = ssl_get_bytes_avail( &ssl );
larger_buf = polarssl_malloc( ori_len + extra_len + 1 );
if( larger_buf == NULL )
{
printf( " ! memory allocation failed\n" );
ret = 1;
goto reset;
}
memset( larger_buf, 0, ori_len + extra_len );
memcpy( larger_buf, buf, ori_len );
/* This read should never fail and get the whole cached data */
ret = ssl_read( &ssl, larger_buf + ori_len, extra_len );
if( ret != extra_len ||
ssl_get_bytes_avail( &ssl ) != 0 )
{
printf( " ! ssl_read failed on cached data\n" );
ret = 1;
goto reset;
}
larger_buf[ori_len + extra_len] = '\0';
printf( " %u bytes read (%u + %u)\n\n%s\n",
ori_len + extra_len, ori_len, extra_len,
(char *) larger_buf );
/* End of message should be detected according to the syntax of the
* application protocol (eg HTTP), just use a dummy test here. */
if( larger_buf[ori_len + extra_len - 1] == '\n' )
terminated = 1;
polarssl_free( larger_buf );
}
if( terminated )
{
ret = 0;
break;
}
}
while( 1 );
}
else /* Not stream, so datagram */
{
int terminated = 0;
len = sizeof( buf ) - 1;
memset( buf, 0, sizeof( buf ) );
ret = ssl_read( &ssl, buf, len );
if( ret == POLARSSL_ERR_NET_WANT_READ ||
ret == POLARSSL_ERR_NET_WANT_WRITE )
continue;
do ret = ssl_read( &ssl, buf, len );
while( ret == POLARSSL_ERR_NET_WANT_READ ||
ret == POLARSSL_ERR_NET_WANT_WRITE );
if( ret <= 0 )
{
@ -1765,13 +1860,14 @@ data_exchange:
{
case POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY:
printf( " connection was closed gracefully\n" );
ret = 0;
goto close_notify;
case 0:
case POLARSSL_ERR_NET_CONN_RESET:
printf( " connection was reset by peer\n" );
ret = POLARSSL_ERR_NET_CONN_RESET;
goto reset;
ret = POLARSSL_ERR_NET_CONN_RESET;
goto reset;
default:
printf( " ssl_read returned -0x%x\n", -ret );
@ -1779,66 +1875,11 @@ data_exchange:
}
}
if( ssl_get_bytes_avail( &ssl ) == 0 )
{
len = ret;
buf[len] = '\0';
printf( " %d bytes read\n\n%s\n", len, (char *) buf );
/* End of message should be detected according to the syntax of the
* application protocol (eg HTTP), just use a dummy test here. */
if( buf[len - 1] == '\n' )
terminated = 1;
}
else
{
int extra_len, ori_len;
unsigned char *larger_buf;
ori_len = ret;
extra_len = ssl_get_bytes_avail( &ssl );
larger_buf = polarssl_malloc( ori_len + extra_len + 1 );
if( larger_buf == NULL )
{
printf( " ! memory allocation failed\n" );
ret = 1;
goto reset;
}
memset( larger_buf, 0, ori_len + extra_len );
memcpy( larger_buf, buf, ori_len );
/* This read should never fail and get the whole cached data */
ret = ssl_read( &ssl, larger_buf + ori_len, extra_len );
if( ret != extra_len ||
ssl_get_bytes_avail( &ssl ) != 0 )
{
printf( " ! ssl_read failed on cached data\n" );
ret = 1;
goto reset;
}
larger_buf[ori_len + extra_len] = '\0';
printf( " %u bytes read (%u + %u)\n\n%s\n",
ori_len + extra_len, ori_len, extra_len,
(char *) larger_buf );
/* End of message should be detected according to the syntax of the
* application protocol (eg HTTP), just use a dummy test here. */
if( larger_buf[ori_len + extra_len - 1] == '\n' )
terminated = 1;
polarssl_free( larger_buf );
}
if( terminated )
{
ret = 0;
break;
}
len = ret;
buf[len] = '\0';
printf( " %d bytes read\n\n%s", len, (char *) buf );
ret = 0;
}
while( 1 );
/*
* 7a. Request renegotiation while client is waiting for input from us.