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Add support of server name extension to server side

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Change-Id: Iccf5017e306ba6ead2e1026a29f397ead084cc4d
Signed-off-by: XiaokangQian <xiaokang.qian@arm.com>
This commit is contained in:
XiaokangQian 2022-05-07 09:02:40 +00:00
parent 1c1d3550ec
commit 40a3523eb7
5 changed files with 99 additions and 75 deletions
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51
library/ssl_tls.c
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@ -8210,4 +8210,55 @@ int mbedtls_ssl_write_sig_alg_ext( mbedtls_ssl_context *ssl, unsigned char *buf,
}
#endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
int mbedtls_ssl_parse_servername_ext( mbedtls_ssl_context *ssl,
const unsigned char *buf,
const unsigned char *end )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
const unsigned char *p = buf;
size_t servername_list_size, hostname_len;
const unsigned char *servername_end;
if( ssl->conf->p_sni == NULL )
{
MBEDTLS_SSL_DEBUG_MSG( 3, ( "No SNI callback configured. Skip SNI parsing." ) );
return( 0 );
}
MBEDTLS_SSL_DEBUG_MSG( 3, ( "Parse ServerName extension" ) );
MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, 2 );
servername_list_size = MBEDTLS_GET_UINT16_BE( p, 0 );
p += 2;
MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, servername_list_size );
servername_end = p + servername_list_size;
while ( p < servername_end )
{
MBEDTLS_SSL_CHK_BUF_READ_PTR( p, servername_end, 3 );
hostname_len = MBEDTLS_GET_UINT16_BE( p, 1 );
MBEDTLS_SSL_CHK_BUF_READ_PTR( p, servername_end, hostname_len + 3 );
if( p[0] == MBEDTLS_TLS_EXT_SERVERNAME_HOSTNAME )
{
ret = ssl->conf->f_sni( ssl->conf->p_sni,
ssl, p + 3, hostname_len );
if( ret != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, "sni_wrapper", ret );
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_UNRECOGNIZED_NAME );
return( MBEDTLS_ERR_SSL_UNRECOGNIZED_NAME );
}
return( 0 );
}
p += hostname_len + 3;
}
return( 0 );
}
#endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
#endif /* MBEDTLS_SSL_TLS_C */