Move available dtls srtp profile list to ssl_config

Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index f392c50..50bc5e3 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -765,7 +765,7 @@
 
     *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 @@
      * 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 @@
                 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 @@
     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 @@
     /*
      * 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 @@
                 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;
         }
     }
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index a14ec86..ee2ae89 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -785,7 +785,7 @@
     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 @@
      * 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 @@
                     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;
             }
         }
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index d739dfc..09a1409 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -3884,8 +3884,6 @@
     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 @@
 #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 @@
             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 @@
             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 @@
 #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 @@
     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 ) );
 }