configfile now supports setting zrtps key agreements

Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>

coreapi/linphonecall.c

@@ -2702,6 +2702,8 @@ static void setZrtpCryptoTypesParameters(MSZrtpParams *params, LinphoneCore *lc)
 			}
 		}
 	}
+
+	params->keyAgreementsCount = linphone_core_get_zrtp_key_agreements(lc, params->keyAgreements);
 }
 
 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone){

coreapi/misc.c

@@ -1581,6 +1581,41 @@ const MSCryptoSuite * linphone_core_get_srtp_crypto_suites(LinphoneCore *lc){
 	return result;
 }
 
+static char * seperate_string_list(char **str) {
+	char *ret;
+
+	if (str == NULL) return NULL;
+	if (*str == NULL) return NULL;
+	if (**str == '\0') return NULL;
+
+	ret = *str;
+	for ( ; **str!='\0' && **str!=' ' && **str!=','; (*str)++);
+	if (**str == '\0') {
+		return ret;
+	} else {
+		**str = '\0';
+		do { (*str)++; } while (**str!='\0' && (**str==' ' || **str==','));
+		return ret;
+	}
+}
+
+MsZrtpCryptoTypesCount linphone_core_get_zrtp_key_agreements(LinphoneCore *lc, MSZrtpKeyAgreement keyAgreements[MS_MAX_ZRTP_CRYPTO_TYPES]){
+	char *config=strdup(lp_config_get_string(lc->config, "sip", "zrtp_key_agreements_suites", "MS_ZRTP_KEY_AGREEMENT_DH3K, MS_ZRTP_KEY_AGREEMENT_DH2K"));
+	char *entry;
+	MsZrtpCryptoTypesCount key_agreements_count = 0;
+
+	if (config == NULL) return 0;
+
+	while ((entry = seperate_string_list(&config))) {
+		const MSZrtpKeyAgreement agreement = ms_zrtp_key_agreement_from_string(entry);
+		if (agreement != MS_ZRTP_KEY_AGREEMENT_INVALID) {
+			ms_message("Configured zrtp key agreement: '%s'", ms_zrtp_key_agreement_to_string(agreement));
+			keyAgreements[key_agreements_count++] = agreement;
+		}
+	}
+
+	return key_agreements_count;
+}
 
 
 const char ** linphone_core_get_supported_file_formats(LinphoneCore *core){

coreapi/private.h

@@ -1048,6 +1048,7 @@ static MS2_INLINE bool_t payload_type_enabled(const PayloadType *pt) {
 bool_t is_payload_type_number_available(const MSList *l, int number, const PayloadType *ignore);
 
 const MSCryptoSuite * linphone_core_get_srtp_crypto_suites(LinphoneCore *lc);
+MsZrtpCryptoTypesCount linphone_core_get_zrtp_key_agreements(LinphoneCore *lc, MSZrtpKeyAgreement keyAgreements[MS_MAX_ZRTP_CRYPTO_TYPES]);
 
 /** Belle Sip-based objects need unique ids
   */