Remove prototype of static functions
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
This commit is contained in:
Jerry Yu
parent
9176c3ad8c
commit
92c6b402d7
1 changed files with 147 additions and 171 deletions
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@ -32,135 +32,82 @@
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#define CLIENT_HELLO_RAND_BYTES_LEN 32
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#define CLIENT_HELLO_VERSION_LEN 2
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/* Main entry point; orchestrates the other functions */
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static int ssl_tls13_write_client_hello( mbedtls_ssl_context *ssl );
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int mbedtls_ssl_tls13_handshake_client_step( mbedtls_ssl_context *ssl )
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{
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int ret = 0;
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if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER || ssl->handshake == NULL )
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{
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MBEDTLS_SSL_DEBUG_MSG( 2, ( "Handshake completed but ssl->handshake is NULL.\n" ) );
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return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
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}
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MBEDTLS_SSL_DEBUG_MSG( 2, ( "client state: %d", ssl->state ) );
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switch( ssl->state )
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{
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/*
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* ssl->state is initialized as HELLO_REQUEST. It is same
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* with CLIENT_HELLO status
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*/
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case MBEDTLS_SSL_HELLO_REQUEST:
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case MBEDTLS_SSL_CLIENT_HELLO:
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ret = ssl_tls13_write_client_hello( ssl );
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break;
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case MBEDTLS_SSL_SERVER_HELLO:
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// Stop here : we haven't finished whole flow
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ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
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mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_ENCRYPTED_EXTENSIONS );
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break;
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default:
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MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
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return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
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}
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return( ret );
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}
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static int ssl_tls13_prepare_client_hello( mbedtls_ssl_context *ssl );
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static int ssl_tls13_write_exts_client_hello( mbedtls_ssl_context *ssl,
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unsigned char *buf, size_t buflen,
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size_t *len_with_binders );
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static int ssl_tls13_finalize_client_hello( mbedtls_ssl_context *ssl );
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static int ssl_tls13_write_client_hello( mbedtls_ssl_context *ssl )
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{
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int ret = 0;
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unsigned char *buf;
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size_t buf_len, msg_len;
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MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write client hello" ) );
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MBEDTLS_SSL_PROC_CHK( ssl_tls13_prepare_client_hello, ( ssl ) );
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MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_start_handshake_msg,
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( ssl, MBEDTLS_SSL_HS_CLIENT_HELLO,
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&buf, &buf_len ) );
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MBEDTLS_SSL_PROC_CHK( ssl_tls13_write_exts_client_hello,
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( ssl, buf, buf_len, &msg_len ) );
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mbedtls_ssl_tls13_add_hs_hdr_to_checksum( ssl, MBEDTLS_SSL_HS_CLIENT_HELLO,
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msg_len );
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ssl->handshake->update_checksum( ssl, buf, 0 );
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MBEDTLS_SSL_PROC_CHK( ssl_tls13_finalize_client_hello, ( ssl ) );
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MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_finish_handshake_msg,
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( ssl, buf_len, msg_len ) );
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cleanup:
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MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write client hello" ) );
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/* client_hello_process haven't finished */
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ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
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return ret;
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}
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static int ssl_tls13_prepare_client_hello( mbedtls_ssl_context *ssl )
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{
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int ret;
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if( ssl->conf->f_rng == NULL )
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{
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MBEDTLS_SSL_DEBUG_MSG( 1, ( "no RNG provided" ) );
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return( MBEDTLS_ERR_SSL_NO_RNG );
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}
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if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng,
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ssl->handshake->randbytes,
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CLIENT_HELLO_RAND_BYTES_LEN ) ) != 0 )
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{
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MBEDTLS_SSL_DEBUG_RET( 1, "ssl_generate_random", ret );
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return( ret );
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}
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return( 0 );
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}
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static int ssl_tls13_finalize_client_hello( mbedtls_ssl_context* ssl )
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{
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mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_SERVER_HELLO );
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return( 0 );
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}
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/* Write extensions */
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/*
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* ssl_tls13_write_supported_versions_ext():
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*
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* struct {
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* ProtocolVersion versions<2..254>;
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* } SupportedVersions;
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*/
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static int ssl_tls13_write_supported_versions_ext( mbedtls_ssl_context *ssl,
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unsigned char *buf,
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unsigned char *end,
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size_t *olen );
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size_t *olen )
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{
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unsigned char *p = buf;
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*olen = 0;
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MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, adding supported version extension" ) );
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MBEDTLS_SSL_CHK_BUF_PTR( p, end, 7 );
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MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_SUPPORTED_VERSIONS, p, 0);
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/* total length */
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MBEDTLS_PUT_UINT16_BE( 3, p, 2);
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p+=4;
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/* length of next field */
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*p++ = 0x2;
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/* This implementation only supports a single TLS version, and only
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* advertises a single value.
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*/
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mbedtls_ssl_write_version( ssl->conf->max_major_ver, ssl->conf->max_minor_ver,
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ssl->conf->transport, p );
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MBEDTLS_SSL_DEBUG_MSG( 3, ( "supported version: [%d:%d]",
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ssl->conf->max_major_ver, ssl->conf->max_minor_ver ) );
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*olen = 7;
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return( 0 );
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}
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#if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
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static int ssl_tls13_write_supported_groups_ext( mbedtls_ssl_context *ssl,
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unsigned char *buf,
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unsigned char *end,
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size_t *olen );
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unsigned char *buf,
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unsigned char *end,
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size_t *olen )
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{
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((void) ssl);
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((void) buf);
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((void) end);
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((void) olen);
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return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
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}
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static int ssl_tls13_write_key_shares_ext( mbedtls_ssl_context *ssl,
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unsigned char *buf,
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unsigned char *end,
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size_t *olen );
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size_t *olen )
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{
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((void) ssl);
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((void) buf);
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((void) end);
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((void) olen);
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return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
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}
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#endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
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/* Functions for ClientHello */
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static int ssl_tls13_write_exts_client_hello( mbedtls_ssl_context *ssl,
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unsigned char *buf, size_t buflen,
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size_t *len_with_binders )
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@ -344,7 +291,9 @@ static int ssl_tls13_write_exts_client_hello( mbedtls_ssl_context *ssl,
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* For cTLS we only need to provide it if there is more than one version
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* and currently there is only one.
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*/
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ssl_tls13_write_supported_versions_ext( ssl, buf, end, &cur_ext_len );
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ret = ssl_tls13_write_supported_versions_ext( ssl, buf, end, &cur_ext_len );
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if( ret != 0 )
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return( ret );
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total_ext_len += cur_ext_len;
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buf += cur_ext_len;
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@ -400,77 +349,104 @@ static int ssl_tls13_write_exts_client_hello( mbedtls_ssl_context *ssl,
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return( 0 );
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}
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/*
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* ssl_tls13_write_supported_versions_ext():
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*
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* struct {
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* ProtocolVersion versions<2..254>;
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* } SupportedVersions;
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*/
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static int ssl_tls13_write_supported_versions_ext( mbedtls_ssl_context *ssl,
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unsigned char *buf,
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unsigned char *end,
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size_t *olen )
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static int ssl_tls13_finalize_client_hello( mbedtls_ssl_context* ssl )
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{
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unsigned char *p = buf;
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mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_SERVER_HELLO );
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return( 0 );
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}
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*olen = 0;
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static int ssl_tls13_prepare_client_hello( mbedtls_ssl_context *ssl )
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{
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int ret;
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MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, adding supported version extension" ) );
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if( ssl->conf->f_rng == NULL )
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{
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MBEDTLS_SSL_DEBUG_MSG( 1, ( "no RNG provided" ) );
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return( MBEDTLS_ERR_SSL_NO_RNG );
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}
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MBEDTLS_SSL_CHK_BUF_PTR( p, end, 7 );
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MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_SUPPORTED_VERSIONS, p, 0);
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/* total length */
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MBEDTLS_PUT_UINT16_BE( 3, p, 2);
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p+=4;
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/* length of next field */
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*p++ = 0x2;
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/* This implementation only supports a single TLS version, and only
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* advertises a single value.
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*/
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mbedtls_ssl_write_version( ssl->conf->max_major_ver, ssl->conf->max_minor_ver,
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ssl->conf->transport, p );
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MBEDTLS_SSL_DEBUG_MSG( 3, ( "supported version: [%d:%d]",
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ssl->conf->max_major_ver, ssl->conf->max_minor_ver ) );
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*olen = 7;
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if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng,
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ssl->handshake->randbytes,
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CLIENT_HELLO_RAND_BYTES_LEN ) ) != 0 )
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{
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MBEDTLS_SSL_DEBUG_RET( 1, "ssl_generate_random", ret );
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return( ret );
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}
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return( 0 );
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}
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#if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
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static int ssl_tls13_write_supported_groups_ext( mbedtls_ssl_context *ssl,
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unsigned char *buf,
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unsigned char *end,
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size_t *olen )
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/*
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* ClientHello Main entry point.
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* orchestrates the other functions.
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*/
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static int ssl_tls13_write_client_hello( mbedtls_ssl_context *ssl )
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{
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((void) ssl);
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((void) buf);
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((void) end);
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((void) olen);
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return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
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int ret = 0;
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unsigned char *buf;
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size_t buf_len, msg_len;
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MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write client hello" ) );
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MBEDTLS_SSL_PROC_CHK( ssl_tls13_prepare_client_hello, ( ssl ) );
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MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_start_handshake_msg,
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( ssl, MBEDTLS_SSL_HS_CLIENT_HELLO,
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&buf, &buf_len ) );
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MBEDTLS_SSL_PROC_CHK( ssl_tls13_write_exts_client_hello,
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( ssl, buf, buf_len, &msg_len ) );
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mbedtls_ssl_tls13_add_hs_hdr_to_checksum( ssl, MBEDTLS_SSL_HS_CLIENT_HELLO,
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msg_len );
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ssl->handshake->update_checksum( ssl, buf, 0 );
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MBEDTLS_SSL_PROC_CHK( ssl_tls13_finalize_client_hello, ( ssl ) );
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MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_finish_handshake_msg,
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( ssl, buf_len, msg_len ) );
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cleanup:
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MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write client hello" ) );
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return ret;
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}
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static int ssl_tls13_write_key_shares_ext( mbedtls_ssl_context *ssl,
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unsigned char *buf,
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unsigned char *end,
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size_t *olen )
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int mbedtls_ssl_tls13_handshake_client_step( mbedtls_ssl_context *ssl )
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{
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((void) ssl);
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((void) buf);
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((void) end);
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((void) olen);
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return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
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}
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int ret = 0;
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#endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
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if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER || ssl->handshake == NULL )
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{
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MBEDTLS_SSL_DEBUG_MSG( 2, ( "Handshake completed but ssl->handshake is NULL.\n" ) );
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return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
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}
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MBEDTLS_SSL_DEBUG_MSG( 2, ( "client state: %d", ssl->state ) );
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switch( ssl->state )
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{
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/*
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* ssl->state is initialized as HELLO_REQUEST. It is same
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* with CLIENT_HELLO status
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*/
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case MBEDTLS_SSL_HELLO_REQUEST:
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case MBEDTLS_SSL_CLIENT_HELLO:
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ret = ssl_tls13_write_client_hello( ssl );
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break;
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case MBEDTLS_SSL_SERVER_HELLO:
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// Stop here : we haven't finished whole flow
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ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
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mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_ENCRYPTED_EXTENSIONS );
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break;
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default:
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MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
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return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
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}
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return( ret );
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}
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#endif /* MBEDTLS_SSL_CLI_C */
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