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Fix missing compile-time guards around CID-only constants

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This commit is contained in:
Hanno Becker 2019-05-01 09:45:57 +01:00
parent f44e55de5e
commit 43c24b8da9
2 changed files with 25 additions and 10 deletions
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24
library/ssl_tls.c
View File

@ -2074,14 +2074,12 @@ static void ssl_extract_add_data_from_record( unsigned char* add_data,
#if defined(MBEDTLS_SSL_CID)
memcpy( add_data + 11, rec->cid, rec->cid_len );
#endif /* MBEDTLS_SSL_CID */
add_data[11 + rec->cid_len + 0] = ( rec->data_len >> 8 ) & 0xFF;
add_data[11 + rec->cid_len + 1] = ( rec->data_len >> 0 ) & 0xFF;
#if defined(MBEDTLS_SSL_CID)
*add_data_len = 13 + rec->cid_len;
#else
#else /* MBEDTLS_SSL_CID */
add_data[11 + 0] = ( rec->data_len >> 8 ) & 0xFF;
add_data[11 + 1] = ( rec->data_len >> 0 ) & 0xFF;
*add_data_len = 13;
#endif /* MBEDTLS_SSL_CID */
}
@ -2122,11 +2120,14 @@ int mbedtls_ssl_encrypt_buf( mbedtls_ssl_context *ssl,
MBEDTLS_SSL_DEBUG_MSG( 1, ( "no transform provided to encrypt_buf" ) );
return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
}
if( rec == NULL ||
rec->buf == NULL ||
rec->buf_len < rec->data_offset ||
rec->buf_len - rec->data_offset < rec->data_len ||
rec->cid_len != 0 )
if( rec == NULL
|| rec->buf == NULL
|| rec->buf_len < rec->data_offset
|| rec->buf_len - rec->data_offset < rec->data_len
#if defined(MBEDTLS_SSL_CID)
|| rec->cid_len != 0
#endif
)
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad record structure provided to encrypt_buf" ) );
return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
@ -4149,7 +4150,10 @@ int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl, uint8_t force_flush )
ssl->conf->transport, rec.ver );
rec.type = ssl->out_msgtype;
#if defined(MBEDTLS_SSL_CID)
/* The CID is set by mbedtls_ssl_encrypt_buf(). */
rec.cid_len = 0;
#endif /* MBEDTLS_SSL_CID */
if( ( ret = mbedtls_ssl_encrypt_buf( ssl, ssl->transform_out, &rec,
ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )

11
tests/suites/test_suite_ssl.function
View File

@ -38,11 +38,16 @@ static int build_transforms( mbedtls_ssl_transform *t_in,
unsigned char *key0 = NULL, *key1 = NULL;
unsigned char iv_enc[16], iv_dec[16];
#if defined(MBEDTLS_SSL_CID)
unsigned char cid0[ SSL_CID_LEN_MIN ];
unsigned char cid1[ SSL_CID_LEN_MIN ];
rnd_std_rand( NULL, cid0, sizeof( cid0 ) );
rnd_std_rand( NULL, cid1, sizeof( cid1 ) );
#else
((void) cid0_len);
((void) cid1_len);
#endif /* MBEDTLS_SSL_CID */
maclen = 0;
@ -241,6 +246,7 @@ static int build_transforms( mbedtls_ssl_transform *t_in,
memcpy( &t_out->iv_dec, iv_enc, sizeof( iv_enc ) );
memcpy( &t_out->iv_enc, iv_dec, sizeof( iv_dec ) );
#if defined(MBEDTLS_SSL_CID)
/* Add CID */
memcpy( &t_in->in_cid, cid0, cid0_len );
memcpy( &t_in->out_cid, cid1, cid1_len );
@ -250,6 +256,7 @@ static int build_transforms( mbedtls_ssl_transform *t_in,
memcpy( &t_out->out_cid, cid0, cid0_len );
t_out->in_cid_len = cid1_len;
t_out->out_cid_len = cid0_len;
#endif /* MBEDTLS_SSL_CID */
cleanup:
@ -372,7 +379,9 @@ void ssl_crypt_record( int cipher_type, int hash_id,
rec.type = 42;
rec.ver[0] = num_records;
rec.ver[1] = num_records;
#if defined(MBEDTLS_SSL_CID)
rec.cid_len = 0;
#endif /* MBEDTLS_SSL_CID */
rec.buf = buf;
rec.buf_len = buflen;
@ -490,7 +499,9 @@ void ssl_crypt_record_small( int cipher_type, int hash_id,
rec.ver[1] = offset;
rec.buf = buf;
rec.buf_len = buflen;
#if defined(MBEDTLS_SSL_CID)
rec.cid_len = 0;
#endif /* MBEDTLS_SSL_CID */
switch( mode )
{