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Move available dtls srtp profile list to ssl_config

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Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
This commit is contained in:
Johan Pascal 2016-02-04 22:07:32 +01:00
parent b62bb51aff
commit bbc057af73
4 changed files with 43 additions and 35 deletions
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16
include/mbedtls/ssl.h
View file

@ -1080,6 +1080,14 @@ struct mbedtls_ssl_config
const char **alpn_list; /*!< ordered list of protocols */
#endif
#if defined(MBEDTLS_SSL_DTLS_SRTP)
/*
* use_srtp extension
*/
enum mbedtls_DTLS_SRTP_protection_profiles *dtls_srtp_profiles_list; /*!< ordered list of supported srtp profile */
size_t dtls_srtp_profiles_list_len; /*!< number of supported profiles */
#endif /* MBEDTLS_SSL_DTLS_SRTP */
/*
* Numerical settings (int then char)
*/
@ -1325,9 +1333,7 @@ struct mbedtls_ssl_context
/*
* use_srtp extension
*/
enum mbedtls_DTLS_SRTP_protection_profiles *dtls_srtp_profiles_list; /*!< ordered list of supported srtp profile */
size_t dtls_srtp_profiles_list_len; /*!< number of supported profiles */
enum mbedtls_DTLS_SRTP_protection_profiles chosen_dtls_srtp_profile; /*!< negotiated profil */
enum mbedtls_DTLS_SRTP_protection_profiles chosen_dtls_srtp_profile; /*!< negotiated SRTP profile */
unsigned char *dtls_srtp_keys; /*<! master keys and master salt for SRTP generated during handshake */
size_t dtls_srtp_keys_len; /*<! length in bytes of master keys and master salt for SRTP generated during handshake */
#endif /* MBEDTLS_SSL_DTLS_SRTP */
@ -3158,14 +3164,14 @@ const char *mbedtls_ssl_get_alpn_protocol( const mbedtls_ssl_context *ssl );
/**
* \brief Set the supported DTLS-SRTP protection profiles.
*
* \param ssl SSL context
* \param ssl SSL configuration
* \param protos List of supported protection profiles,
* in decreasing preference order.
* \param profiles_number Number of supported profiles.
*
* \return 0 on success, or MBEDTLS_ERR_SSL_BAD_INPUT_DATA.
*/
int mbedtls_ssl_set_dtls_srtp_protection_profiles( mbedtls_ssl_context *ssl, const enum mbedtls_DTLS_SRTP_protection_profiles *profiles, size_t profiles_number);
int mbedtls_ssl_conf_dtls_srtp_protection_profiles( mbedtls_ssl_config *conf, const enum mbedtls_DTLS_SRTP_protection_profiles *profiles, size_t profiles_number);
/**
* \brief Get the negotiated DTLS-SRTP Protection Profile.

30
library/ssl_cli.c
View file

@ -765,7 +765,7 @@ static void ssl_write_use_srtp_ext( mbedtls_ssl_context *ssl,
*olen = 0;
if( (ssl->dtls_srtp_profiles_list == NULL) || (ssl->dtls_srtp_profiles_list_len == 0) )
if( (ssl->conf->dtls_srtp_profiles_list == NULL) || (ssl->conf->dtls_srtp_profiles_list_len == 0) )
{
return;
}
@ -788,18 +788,18 @@ static void ssl_write_use_srtp_ext( mbedtls_ssl_context *ssl,
* Note: srtp_mki is not supported
*/
/* Extension length = 2bytes for profiles lenght, ssl->dtls_srtp_profiles_list_len*2 (each profile is 2 bytes length ) + 1 byte for the non implemented srtp_mki vector length (always 0) */
*p++ = (unsigned char)( ( ( 2 + 2*(ssl->dtls_srtp_profiles_list_len) + 1 ) >> 8 ) & 0xFF );
*p++ = (unsigned char)( ( ( 2 + 2*(ssl->dtls_srtp_profiles_list_len) + 1 ) ) & 0xFF );
/* Extension length = 2bytes for profiles lenght, ssl->conf->dtls_srtp_profiles_list_len*2 (each profile is 2 bytes length ) + 1 byte for the non implemented srtp_mki vector length (always 0) */
*p++ = (unsigned char)( ( ( 2 + 2*(ssl->conf->dtls_srtp_profiles_list_len) + 1 ) >> 8 ) & 0xFF );
*p++ = (unsigned char)( ( ( 2 + 2*(ssl->conf->dtls_srtp_profiles_list_len) + 1 ) ) & 0xFF );
/* protection profile length: 2*(ssl->dtls_srtp_profiles_list_len) */
*p++ = (unsigned char)( ( ( 2*(ssl->dtls_srtp_profiles_list_len) ) >> 8 ) & 0xFF );
*p++ = (unsigned char)( ( 2*(ssl->dtls_srtp_profiles_list_len) ) & 0xFF );
/* protection profile length: 2*(ssl->conf->dtls_srtp_profiles_list_len) */
*p++ = (unsigned char)( ( ( 2*(ssl->conf->dtls_srtp_profiles_list_len) ) >> 8 ) & 0xFF );
*p++ = (unsigned char)( ( 2*(ssl->conf->dtls_srtp_profiles_list_len) ) & 0xFF );
for( protection_profiles_index=0; protection_profiles_index < ssl->dtls_srtp_profiles_list_len; protection_profiles_index++ )
for( protection_profiles_index=0; protection_profiles_index < ssl->conf->dtls_srtp_profiles_list_len; protection_profiles_index++ )
{
switch (ssl->dtls_srtp_profiles_list[protection_profiles_index]) {
switch (ssl->conf->dtls_srtp_profiles_list[protection_profiles_index]) {
case MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80:
*p++ = ( ( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE ) >> 8 ) & 0xFF);
*p++ = ( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE ) & 0xFF);
@ -818,14 +818,14 @@ static void ssl_write_use_srtp_ext( mbedtls_ssl_context *ssl,
break;
default:
/* Note: we shall never arrive here as protection profiles is checked by ssl_set_dtls_srtp_protection_profiles function */
MBEDTLS_SSL_DEBUG_MSG( 1, ( "client hello, ignore illegal DTLS-SRTP protection profile %d", ssl->dtls_srtp_profiles_list[protection_profiles_index]) );
MBEDTLS_SSL_DEBUG_MSG( 1, ( "client hello, ignore illegal DTLS-SRTP protection profile %d", ssl->conf->dtls_srtp_profiles_list[protection_profiles_index]) );
break;
}
}
*p++ = 0x00; /* non implemented srtp_mki vector length is always 0 */
/* total extension length: extension type (2 bytes) + extension length (2 bytes) + protection profile length (2 bytes) + 2*nb protection profiles + srtp_mki vector length(1 byte)*/
*olen = 2 + 2 + 2 + 2*(ssl->dtls_srtp_profiles_list_len) + 1;
*olen = 2 + 2 + 2 + 2*(ssl->conf->dtls_srtp_profiles_list_len) + 1;
}
#endif /* MBEDTLS_SSL_DTLS_SRTP */
@ -1797,7 +1797,7 @@ static int ssl_parse_use_srtp_ext( mbedtls_ssl_context *ssl,
uint16_t server_protection_profile_value = 0;
/* If use_srtp is not configured, just ignore the extension */
if( ( ssl->dtls_srtp_profiles_list == NULL ) || ( ssl->dtls_srtp_profiles_list_len == 0 ) )
if( ( ssl->conf->dtls_srtp_profiles_list == NULL ) || ( ssl->conf->dtls_srtp_profiles_list_len == 0 ) )
return( 0 );
/* RFC5764 section 4.1.1
@ -1829,7 +1829,7 @@ static int ssl_parse_use_srtp_ext( mbedtls_ssl_context *ssl,
/*
* Check we have the server profile in our list
*/
for( i=0; i < ssl->dtls_srtp_profiles_list_len; i++)
for( i=0; i < ssl->conf->dtls_srtp_profiles_list_len; i++)
{
switch ( server_protection_profile_value ) {
case MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE:
@ -1849,8 +1849,8 @@ static int ssl_parse_use_srtp_ext( mbedtls_ssl_context *ssl,
break;
}
if (server_protection == ssl->dtls_srtp_profiles_list[i]) {
ssl->chosen_dtls_srtp_profile = ssl->dtls_srtp_profiles_list[i];
if (server_protection == ssl->conf->dtls_srtp_profiles_list[i]) {
ssl->chosen_dtls_srtp_profile = ssl->conf->dtls_srtp_profiles_list[i];
return 0;
}
}

8
library/ssl_srv.c
View file

@ -785,7 +785,7 @@ static int ssl_parse_use_srtp_ext( mbedtls_ssl_context *ssl,
uint16_t profile_length;
/* If use_srtp is not configured, just ignore the extension */
if( ( ssl->dtls_srtp_profiles_list == NULL ) || ( ssl->dtls_srtp_profiles_list_len == 0 ) )
if( ( ssl->conf->dtls_srtp_profiles_list == NULL ) || ( ssl->conf->dtls_srtp_profiles_list_len == 0 ) )
return( 0 );
/* RFC5764 section 4.1.1
@ -809,7 +809,7 @@ static int ssl_parse_use_srtp_ext( mbedtls_ssl_context *ssl,
* Use our order of preference
*/
profile_length = buf[0]<<8|buf[1]; /* first 2 bytes are protection profile length(in bytes) */
for( i=0; i < ssl->dtls_srtp_profiles_list_len; i++)
for( i=0; i < ssl->conf->dtls_srtp_profiles_list_len; i++)
{
/* parse the extension list values are defined in http://www.iana.org/assignments/srtp-protection/srtp-protection.xhtml */
for (j=0; j<profile_length; j+=2) { /* parse only the protection profile, srtp_mki is not supported and ignored */
@ -833,8 +833,8 @@ static int ssl_parse_use_srtp_ext( mbedtls_ssl_context *ssl,
break;
}
if (client_protection == ssl->dtls_srtp_profiles_list[i]) {
ssl->chosen_dtls_srtp_profile = ssl->dtls_srtp_profiles_list[i];
if (client_protection == ssl->conf->dtls_srtp_profiles_list[i]) {
ssl->chosen_dtls_srtp_profile = ssl->conf->dtls_srtp_profiles_list[i];
return 0;
}
}

24
library/ssl_tls.c
View file

@ -3884,8 +3884,6 @@ int mbedtls_ssl_setup( mbedtls_ssl_context *ssl,
mbedtls_ssl_reset_in_out_pointers( ssl );
#if defined(MBEDTLS_SSL_DTLS_SRTP)
ssl->dtls_srtp_profiles_list = NULL;
ssl->dtls_srtp_profiles_list_len = 0;
ssl->chosen_dtls_srtp_profile = MBEDTLS_SRTP_UNSET_PROFILE;
ssl->dtls_srtp_keys = NULL;
ssl->dtls_srtp_keys_len = 0;
@ -4718,7 +4716,7 @@ const char *mbedtls_ssl_get_alpn_protocol( const mbedtls_ssl_context *ssl )
#endif /* MBEDTLS_SSL_ALPN */
#if defined(MBEDTLS_SSL_DTLS_SRTP)
int mbedtls_ssl_set_dtls_srtp_protection_profiles( mbedtls_ssl_context *ssl, const enum mbedtls_DTLS_SRTP_protection_profiles *profiles, size_t profiles_number)
int mbedtls_ssl_conf_dtls_srtp_protection_profiles( mbedtls_ssl_config *conf, const enum mbedtls_DTLS_SRTP_protection_profiles *profiles, size_t profiles_number)
{
size_t i;
/* check in put validity : must be a list of profiles from enumeration */
@ -4727,8 +4725,8 @@ int mbedtls_ssl_set_dtls_srtp_protection_profiles( mbedtls_ssl_context *ssl, con
return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
}
mbedtls_free(ssl->dtls_srtp_profiles_list);
ssl->dtls_srtp_profiles_list = (enum mbedtls_DTLS_SRTP_protection_profiles *)mbedtls_calloc(1, profiles_number*sizeof(enum mbedtls_DTLS_SRTP_protection_profiles));
mbedtls_free(conf->dtls_srtp_profiles_list);
conf->dtls_srtp_profiles_list = (enum mbedtls_DTLS_SRTP_protection_profiles *)mbedtls_calloc(1, profiles_number*sizeof(enum mbedtls_DTLS_SRTP_protection_profiles));
for (i=0; i<profiles_number; i++) {
switch (profiles[i]) {
@ -4736,18 +4734,18 @@ int mbedtls_ssl_set_dtls_srtp_protection_profiles( mbedtls_ssl_context *ssl, con
case MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32:
case MBEDTLS_SRTP_NULL_HMAC_SHA1_80:
case MBEDTLS_SRTP_NULL_HMAC_SHA1_32:
ssl->dtls_srtp_profiles_list[i] = profiles[i];
conf->dtls_srtp_profiles_list[i] = profiles[i];
break;
default:
mbedtls_free(ssl->dtls_srtp_profiles_list);
ssl->dtls_srtp_profiles_list = NULL;
ssl->dtls_srtp_profiles_list_len = 0;
mbedtls_free(conf->dtls_srtp_profiles_list);
conf->dtls_srtp_profiles_list = NULL;
conf->dtls_srtp_profiles_list_len = 0;
return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
}
}
/* assign array length */
ssl->dtls_srtp_profiles_list_len = profiles_number;
conf->dtls_srtp_profiles_list_len = profiles_number;
return( 0 );
}
@ -6857,7 +6855,7 @@ void mbedtls_ssl_free( mbedtls_ssl_context *ssl )
#endif
#if defined (MBEDTLS_SSL_DTLS_SRTP)
mbedtls_free( ssl->dtls_srtp_profiles_list );
mbedtls_zeroize( ssl->dtls_srtp_keys, ssl->dtls_srtp_keys_len );
mbedtls_free( ssl->dtls_srtp_keys );
#endif /* MBEDTLS_SSL_DTLS_SRTP */
@ -7114,6 +7112,10 @@ void mbedtls_ssl_config_free( mbedtls_ssl_config *conf )
ssl_key_cert_free( conf->key_cert );
#endif
#if defined (MBEDTLS_SSL_DTLS_SRTP)
mbedtls_free( conf->dtls_srtp_profiles_list );
#endif
mbedtls_platform_zeroize( conf, sizeof( mbedtls_ssl_config ) );
}