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Introduce function to reset in/out pointers

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This commit is contained in:
Hanno Becker 2018-08-10 11:12:52 +01:00
parent 111fa497aa
commit 2a43f6f539
1 changed files with 25 additions and 17 deletions
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42
library/ssl_tls.c
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@ -54,6 +54,8 @@
#include "mbedtls/oid.h"
#endif
static void ssl_reset_in_out_pointers( mbedtls_ssl_context *ssl );
/* Length of the "epoch" field in the record header */
static inline size_t ssl_ep_len( const mbedtls_ssl_context *ssl )
{
@ -6215,6 +6217,28 @@ void mbedtls_ssl_init( mbedtls_ssl_context *ssl )
/*
* Setup an SSL context
*/
static void ssl_reset_in_out_pointers( mbedtls_ssl_context *ssl )
{
/* Set the incoming and outgoing record pointers. */
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
{
ssl->out_hdr = ssl->out_buf;
ssl->in_hdr = ssl->in_buf;
}
else
#endif /* MBEDTLS_SSL_PROTO_DTLS */
{
ssl->out_hdr = ssl->out_buf + 8;
ssl->in_hdr = ssl->in_buf + 8;
}
/* Derive other internal pointers. */
ssl_update_out_pointers( ssl, NULL /* no transform enabled */ );
ssl_update_in_pointers ( ssl, NULL /* no transform enabled */ );
}
int mbedtls_ssl_setup( mbedtls_ssl_context *ssl,
const mbedtls_ssl_config *conf )
{
@ -6241,23 +6265,7 @@ int mbedtls_ssl_setup( mbedtls_ssl_context *ssl,
return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
}
/* Set the incoming and outgoing record pointers. */
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
{
ssl->out_hdr = ssl->out_buf;
ssl->in_hdr = ssl->in_buf;
}
else
#endif /* MBEDTLS_SSL_PROTO_DTLS */
{
ssl->out_hdr = ssl->out_buf + 8;
ssl->in_hdr = ssl->in_buf + 8;
}
/* Derive other internal pointers. */
ssl_update_out_pointers( ssl, NULL /* no transform enabled */ );
ssl_update_in_pointers ( ssl, NULL /* no transform enabled */ );
ssl_reset_in_out_pointers( ssl );
if( ( ret = ssl_handshake_init( ssl ) ) != 0 )
return( ret );