/* <!-- copyright */
/*
 * aria2 - The high speed download utility
 *
 * Copyright (C) 2006 Tatsuhiro Tsujikawa
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * In addition, as a special exception, the copyright holders give
 * permission to link the code of portions of this program with the
 * OpenSSL library under certain conditions as described in each
 * individual source file, and distribute linked combinations
 * including the two.
 * You must obey the GNU General Public License in all respects
 * for all of the code used other than OpenSSL.  If you modify
 * file(s) with this exception, you may extend this exception to your
 * version of the file(s), but you are not obligated to do so.  If you
 * do not wish to do so, delete this exception statement from your
 * version.  If you delete this exception statement from all source
 * files in the program, then also delete it here.
 */
/* copyright --> */
#include "AbstractProxyRequestCommand.h"
#include "DownloadEngine.h"
#include "RequestGroup.h"
#include "Request.h"
#include "HttpConnection.h"
#include "HttpRequest.h"
#include "Segment.h"
#include "Option.h"
#include "prefs.h"
#include "SocketCore.h"
#include "DownloadContext.h"
#include "SocketRecvBuffer.h"
#include "BackupIPv4ConnectCommand.h"
#include "fmt.h"
#include "LogFactory.h"

namespace aria2 {

AbstractProxyRequestCommand::AbstractProxyRequestCommand
(cuid_t cuid,
 const SharedHandle<Request>& req,
 const SharedHandle<FileEntry>& fileEntry,
 RequestGroup* requestGroup,
 DownloadEngine* e,
 const SharedHandle<Request>& proxyRequest,
 const SharedHandle<SocketCore>& s)
  :
  AbstractCommand(cuid, req, fileEntry, requestGroup, e, s),
  proxyRequest_(proxyRequest),
  httpConnection_
  (new HttpConnection
   (cuid, s, SharedHandle<SocketRecvBuffer>(new SocketRecvBuffer(s))))
{
  setTimeout(getOption()->getAsInt(PREF_CONNECT_TIMEOUT));
  disableReadCheckSocket();
  setWriteCheckSocket(getSocket());
}

AbstractProxyRequestCommand::~AbstractProxyRequestCommand()
{
  if(backupConnectionInfo_) {
    backupConnectionInfo_->cancel = true;
  }
}

bool AbstractProxyRequestCommand::noCheck() {
  return backupConnectionInfo_ && !backupConnectionInfo_->ipaddr.empty();
}

bool AbstractProxyRequestCommand::executeInternal() {
  //socket->setBlockingMode();
  if(httpConnection_->sendBufferIsEmpty()) {
    if(backupConnectionInfo_ && !backupConnectionInfo_->ipaddr.empty()) {
      A2_LOG_INFO(fmt("CUID#%"PRId64" - Use backup connection address %s",
                      getCuid(), backupConnectionInfo_->ipaddr.c_str()));
      getDownloadEngine()->markBadIPAddress
        (getRequest()->getConnectedHostname(),
         getRequest()->getConnectedAddr(),
         getRequest()->getConnectedPort());

      getRequest()->setConnectedAddrInfo(getRequest()->getConnectedHostname(),
                                         backupConnectionInfo_->ipaddr,
                                         getRequest()->getConnectedPort());

      Command* c = createSelf(backupConnectionInfo_->socket);
      c->setStatus(STATUS_ONESHOT_REALTIME);
      getDownloadEngine()->setNoWait(true);
      getDownloadEngine()->addCommand(c);
      backupConnectionInfo_.reset();
      return true;
    }
    if(!checkIfConnectionEstablished
       (getSocket(), getRequest()->getConnectedHostname(),
        getRequest()->getConnectedAddr(), getRequest()->getConnectedPort())) {
      return true;
    }
    if(backupConnectionInfo_) {
      backupConnectionInfo_->cancel = true;
      backupConnectionInfo_.reset();
    }
    SharedHandle<HttpRequest> httpRequest(new HttpRequest());
    httpRequest->setUserAgent(getOption()->get(PREF_USER_AGENT));
    httpRequest->setRequest(getRequest());
    httpRequest->setProxyRequest(proxyRequest_);

    httpConnection_->sendProxyRequest(httpRequest);
  } else {
    httpConnection_->sendPendingData();
  }
  if(httpConnection_->sendBufferIsEmpty()) {
    getDownloadEngine()->addCommand(getNextCommand());
    return true;
  } else {
    setWriteCheckSocket(getSocket());
    getDownloadEngine()->addCommand(this);
    return false;
  }
}

void AbstractProxyRequestCommand::setBackupConnectInfo
(const SharedHandle<BackupConnectInfo>& info)
{
  backupConnectionInfo_ = info;
}

} // namespace aria2