Swiften/Parser/PayloadParsers/JingleS5BTransportMethodPayloadParser.cpp


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/*
 * Copyright (c) 2011 Tobias Markmann
 * Licensed under the simplified BSD license.
 * See Documentation/Licenses/BSD-simplified.txt for more information.
 */

/*
 * Copyright (c) 2014-2018 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <Swiften/Parser/PayloadParsers/JingleS5BTransportMethodPayloadParser.h>

#include <boost/lexical_cast.hpp>
#include <boost/numeric/conversion/cast.hpp>
#include <boost/optional.hpp>

#include <Swiften/Base/Log.h>

namespace Swift {
    JingleS5BTransportMethodPayloadParser::JingleS5BTransportMethodPayloadParser() : level(0) {

    }

    void JingleS5BTransportMethodPayloadParser::handleStartElement(const std::string& element, const std::string&, const AttributeMap& attributes) {
        if (level == 0) {
            getPayloadInternal()->setSessionID(attributes.getAttributeValue("sid").get_value_or(""));
            std::string mode = attributes.getAttributeValue("mode").get_value_or("tcp");
            if (mode == "tcp") {
                getPayloadInternal()->setMode(JingleS5BTransportPayload::TCPMode);
            } else if(mode == "udp") {
                getPayloadInternal()->setMode(JingleS5BTransportPayload::UDPMode);
            } else {
                SWIFT_LOG(warning) << "Unknown S5B mode; falling back to defaul!";
                getPayloadInternal()->setMode(JingleS5BTransportPayload::TCPMode);
            }
            getPayloadInternal()->setDstAddr(attributes.getAttributeValue("dstaddr").get_value_or(""));
        } else if (level == 1) {
            if (element == "candidate") {
                JingleS5BTransportPayload::Candidate candidate;
                candidate.cid = attributes.getAttributeValue("cid").get_value_or("");

                unsigned short port = 0;
                try {
                    port = boost::numeric_cast<unsigned short>(boost::lexical_cast<int>(attributes.getAttributeValue("port").get_value_or("0")));
                } catch(...) { }
                candidate.hostPort = HostAddressPort(HostAddress::fromString(attributes.getAttributeValue("host").get_value_or("")).get_value_or(HostAddress()), port);
                candidate.jid = JID(attributes.getAttributeValue("jid").get_value_or(""));
                int priority = -1;
                try {
                    priority = boost::lexical_cast<int>(attributes.getAttributeValue("priority").get_value_or("-1"));
                } catch(boost::bad_lexical_cast &) { }
                candidate.priority = priority;
                candidate.type = stringToType(attributes.getAttributeValue("type").get_value_or("direct"));

                getPayloadInternal()->addCandidate(candidate);
            } else if (element == "candidate-used") {
                getPayloadInternal()->setCandidateUsed(attributes.getAttributeValue("cid").get_value_or(""));
            } else if (element == "candidate-error") {
                getPayloadInternal()->setCandidateError(true);
            } else if (element == "activated") {
                getPayloadInternal()->setActivated(attributes.getAttributeValue("cid").get_value_or(""));
            } else if (element == "proxy-error") {
                getPayloadInternal()->setProxyError(true);
            }
        }

        ++level;
    }

    void JingleS5BTransportMethodPayloadParser::handleEndElement(const std::string&, const std::string&) {
        --level;
    }

    void JingleS5BTransportMethodPayloadParser::handleCharacterData(const std::string&) {

    }

    JingleS5BTransportPayload::Candidate::Type JingleS5BTransportMethodPayloadParser::stringToType(const std::string &str) const {
        if (str == "direct") {
            return JingleS5BTransportPayload::Candidate::DirectType;
        } else if (str == "assisted") {
            return JingleS5BTransportPayload::Candidate::AssistedType;
        } else if (str == "tunnel") {
            return JingleS5BTransportPayload::Candidate::TunnelType;
        } else if (str == "proxy") {
            return JingleS5BTransportPayload::Candidate::ProxyType;
        } else {
            SWIFT_LOG(warning) << "Unknown candidate type; falling back to default!";
            return JingleS5BTransportPayload::Candidate::DirectType;
        }
    }
}