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ssl_client.c: Add DTLS 1.2 cookie support

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Signed-off-by: Ronald Cron <ronald.cron@arm.com>
This commit is contained in:
Ronald Cron 2022-02-19 18:11:26 +01:00
parent 021b1785ef
commit a874aa818a
1 changed files with 28 additions and 0 deletions
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28
library/ssl_client.c
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@ -286,6 +286,34 @@ static int ssl_write_client_hello_body( mbedtls_ssl_context *ssl,
MBEDTLS_SSL_DEBUG_BUF( 3, "session id", ssl->session_negotiate->id, MBEDTLS_SSL_DEBUG_BUF( 3, "session id", ssl->session_negotiate->id,
ssl->session_negotiate->id_len ); ssl->session_negotiate->id_len );
/* DTLS 1.2 ONLY
* ...
* opaque cookie<0..2^8-1>;
* ...
*/
#if defined(MBEDTLS_SSL_PROTO_TLS1_2) && defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
{
unsigned char cookie_len = 0;
if( ssl->handshake->cookie != NULL )
{
MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, cookie",
ssl->handshake->cookie,
ssl->handshake->verify_cookie_len );
cookie_len = ssl->handshake->verify_cookie_len;
}
MBEDTLS_SSL_CHK_BUF_PTR( p, end, cookie_len + 1 );
*p++ = cookie_len;
if( cookie_len > 0 )
{
memcpy( p, ssl->handshake->cookie, cookie_len );
p += cookie_len;
}
}
#endif /* MBEDTLS_SSL_PROTO_TLS1_2 && MBEDTLS_SSL_PROTO_DTLS */
/* Write cipher_suites */ /* Write cipher_suites */
ret = ssl_write_client_hello_cipher_suites( ssl, p, end, &output_len ); ret = ssl_write_client_hello_cipher_suites( ssl, p, end, &output_len );
if( ret != 0 ) if( ret != 0 )