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/*
* Copyright (c) 2010-2011 Thilo Cestonaro
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
/*
* Copyright (c) 2011-2019 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#include <Swiften/Network/HTTPConnectProxiedConnection.h>
#include <iostream>
#include <utility>
#include <boost/algorithm/string.hpp>
#include <boost/bind.hpp>
#include <boost/lexical_cast.hpp>
#include <Swiften/Base/Algorithm.h>
#include <Swiften/Base/ByteArray.h>
#include <Swiften/Base/Log.h>
#include <Swiften/Base/String.h>
#include <Swiften/Network/ConnectionFactory.h>
#include <Swiften/Network/HTTPTrafficFilter.h>
#include <Swiften/Network/HostAddressPort.h>
#include <Swiften/StringCodecs/Base64.h>
using namespace Swift;
HTTPConnectProxiedConnection::HTTPConnectProxiedConnection(
DomainNameResolver* resolver,
ConnectionFactory* connectionFactory,
TimerFactory* timerFactory,
const std::string& proxyHost,
unsigned short proxyPort,
const SafeString& authID,
const SafeString& authPassword) :
ProxiedConnection(resolver, connectionFactory, timerFactory, proxyHost, proxyPort),
authID_(authID),
authPassword_(authPassword) {
}
HTTPConnectProxiedConnection::~HTTPConnectProxiedConnection() {
}
void HTTPConnectProxiedConnection::setHTTPTrafficFilter(std::shared_ptr<HTTPTrafficFilter> trafficFilter) {
trafficFilter_ = trafficFilter;
}
void HTTPConnectProxiedConnection::initializeProxy() {
httpResponseBuffer_.clear();
std::stringstream connect;
connect << "CONNECT " << getServer().getAddress().toString() << ":" << getServer().getPort() << " HTTP/1.1\r\n";
SafeByteArray data = createSafeByteArray(connect.str());
if (!authID_.empty() && !authPassword_.empty()) {
append(data, createSafeByteArray("Proxy-Authorization: Basic "));
SafeByteArray credentials = authID_;
append(credentials, createSafeByteArray(":"));
append(credentials, authPassword_);
append(data, Base64::encode(credentials));
append(data, createSafeByteArray("\r\n"));
}
else if (!nextHTTPRequestHeaders_.empty()) {
for (const auto& headerField : nextHTTPRequestHeaders_) {
append(data, createSafeByteArray(headerField.first));
append(data, createSafeByteArray(": "));
append(data, createSafeByteArray(headerField.second));
append(data, createSafeByteArray("\r\n"));
}
nextHTTPRequestHeaders_.clear();
}
append(data, createSafeByteArray("\r\n"));
SWIFT_LOG(debug) << "HTTP Proxy send headers: " << byteArrayToString(ByteArray(data.begin(), data.end()));
write(data);
}
void HTTPConnectProxiedConnection::parseHTTPHeader(const std::string& data, std::string& statusLine, std::vector<std::pair<std::string, std::string> >& headerFields) {
std::istringstream dataStream(data);
// parse status line
std::getline(dataStream, statusLine);
// parse fields
std::string headerLine;
std::string::size_type splitIndex;
while (std::getline(dataStream, headerLine) && headerLine != "\r") {
splitIndex = headerLine.find(':', 0);
if (splitIndex != std::string::npos) {
headerFields.push_back(std::pair<std::string, std::string>(headerLine.substr(0, splitIndex), headerLine.substr(splitIndex + 1)));
}
}
}
void HTTPConnectProxiedConnection::sendHTTPRequest(const std::string& statusLine, const std::vector<std::pair<std::string, std::string> >& headerFields) {
std::stringstream request;
request << statusLine << "\r\n";
for (const auto& field : headerFields) {
request << field.first << ":" << field.second << "\r\n";
}
request << "\r\n";
write(createSafeByteArray(request.str()));
}
void HTTPConnectProxiedConnection::handleProxyInitializeData(std::shared_ptr<SafeByteArray> data) {
std::string dataString = byteArrayToString(ByteArray(data->begin(), data->end()));
SWIFT_LOG(debug) << data;
httpResponseBuffer_.append(dataString);
std::string statusLine;
std::vector<std::pair<std::string, std::string> > headerFields;
std::string::size_type headerEnd = httpResponseBuffer_.find("\r\n\r\n", 0);
if (headerEnd == std::string::npos) {
if ((httpResponseBuffer_.size() > 4) && (httpResponseBuffer_.substr(0, 4) != "HTTP")) {
setProxyInitializeFinished(false);
}
return;
}
parseHTTPHeader(httpResponseBuffer_.substr(0, headerEnd), statusLine, headerFields);
if (trafficFilter_) {
std::vector<std::pair<std::string, std::string> > newHeaderFields = trafficFilter_->filterHTTPResponseHeader(statusLine, headerFields);
if (!newHeaderFields.empty()) {
std::stringstream statusLine;
reconnect();
nextHTTPRequestHeaders_ = newHeaderFields;
return;
}
}
std::vector<std::string> tmp = String::split(statusLine, ' ');
if (tmp.size() > 1) {
try {
int status = boost::lexical_cast<int>(tmp[1]);
SWIFT_LOG(debug) << "Proxy Status: " << status;
if (status / 100 == 2) { // all 2XX states are OK
setProxyInitializeFinished(true);
}
else {
SWIFT_LOG(debug) << "HTTP Proxy returned an error: " << httpResponseBuffer_;
setProxyInitializeFinished(false);
}
}
catch (boost::bad_lexical_cast&) {
SWIFT_LOG(warning) << "Unexpected response: " << tmp[1];
setProxyInitializeFinished(false);
}
}
else {
setProxyInitializeFinished(false);
}
httpResponseBuffer_.clear();
}
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