hostinterface.cxx

SIP（Session Initiation Protocol）是由IETF定义

/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact [e-mail].
 *
 * 4. Products derived from this software may not be called "VOCAL", nor
 *    may "VOCAL" appear in their name, without prior written
 *    permission of Vovida Networks, Inc.
 * 
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
 * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL VOVIDA
 * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
 * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 * 
 * ====================================================================
 * 
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
 * <http://www.vovida.org/>.
 *
 */

static const char* const HostInterface_cxx_Version =
    "$Id: HostInterface.cxx,v 1.14 2002/09/26 01:14:02 bko Exp $";

#include <stdlib.h>
#include <stdio.h>
#include <strstream.h>
#include <unistd.h>

#include "HostInterface.hxx"
#include "VNetworkException.hxx"
#include "VIoException.hxx"
#include "PSListener.hxx"
#include "cpLog.h"
#include "Tcp_ClientSocket.hxx"
#include "VPs_def.h"
#include "Vpp_def.h"
#include "VMissingDataException.hxx"
#include "VBadDataException.hxx"
#include <errno.h>
#include "PSNetworkClient.hxx"
#include "PSSecret.hxx"


HostInterface::HostInterface(const char *host, 
			     const int port, 
			     const char* password) 
    : _isAlive(true), _inUse(false)
{

    // _isAlive is true -- we assume we are connected till we fail on a connect.
    // _inUse is set by PSInterface
    
    string pServer = host;

    // construct the network address, and pass it to the reader
    _networkAddress = new NetworkAddress(pServer);
    _networkAddress->setPort(port);

    // instantiate the reader and writer using this address
    _reader = new PSReader(*_networkAddress, password);
    _writer = new PSWriter(*_networkAddress, password);
}


string
HostInterface::readItem(const string& group, const string &name)
throw (VException &)
{
    // if this fails, an exception gets thrown up to the PSInterface
    // class, which will mark this as disconnected and try the other one...
    return (getXmlContents(_reader->getItem(group, name)));
}


void
HostInterface::getList(const string& group, vector < Data > & retList)
throw (VNetworkException&)
{
    _reader->getList(group, retList);
}


void
HostInterface::writeItem(const string &group, const string &name,
                         const string &contents)
throw (VNetworkException &)
{
    _writer->putItem(group, name, contents);
}


string
HostInterface::getXmlContents(const string& dRead)
throw (VException &)
{
    cpLog(LOG_DEBUG, "Response from PS [%s]", dRead.c_str());

    //The return response from ProvisionServer has
    //Protocol
    // <retCode> <Status>
    //   Content-Length: <content_length>
    //   <contents>
    //
    //Get the return code

    char stMsg[MAXLINE];
    char cStr[CONT_STR_LENGTH];
    int retCode;
    int cLength;
    string dReturn;
    char * tok = strtok((char*)dRead.c_str(), "\n");

    // no data, esssentially...
    if (tok == NULL)
    {
        cpLog(LOG_DEBUG, "Failed to read data from PS");
        throw VNetworkException("Failed to READ data from PS",
                                __FILE__, __LINE__, 0);
    }

    // have data. Will be of the form 200 OK\n Content-Length : size\n body
    int lnCount = 1;
    while (tok)
    {
        switch (lnCount)
        {
            case 1:
            sscanf(tok, "%d%s", &retCode, stMsg);
            if (retCode != 200)
            {
                // we should get a return code of 200 for a valid message
                cpLog(LOG_DEBUG, "Failed to read data from PS");
                throw VMissingDataException("Failed to READ data from PS",
                                            __FILE__, __LINE__, 0);

            }
            tok = strtok(NULL, "\n");
            lnCount++;
            break;
            case 2:
            sscanf(tok, "%s%d", cStr, &cLength);
            tok = strtok(NULL, "");
            lnCount++;
            break;
            case 3:
            dReturn += tok;
            tok = strtok(NULL, "");
            break;
        }
    }

    return dReturn;
}


void
HostInterface::deleteSubscriber(const string& subscriberName)
throw (VNetworkException &)
{
    PSNetworkClient clientSocket(*_networkAddress, true, false);
    Connection& connection = clientSocket.getConn(PSSecret::writeSecret());

    char buf[MAXLINE];
    sprintf(buf, "%s %s \n", DELETE_USER_REQ, subscriberName.c_str());
    string regReq(buf);
    connection.writeData(regReq);
}


void
HostInterface::registerForItem(const string &group, const string &name,
                               const string &hostName)
throw (VNetworkException &)
{
    PSNetworkClient clientSocket(*_networkAddress, true, false);
    Connection& connection = clientSocket.getConn(PSSecret::readSecret());

    char buf[MAXLINE];
    sprintf(buf, "%s %s %s %s\n", REGISTER_ITEM_REQ,
            group.c_str(), name.c_str(), hostName.c_str());
    string regReq(buf);
    connection.writeData(regReq);
}


void
HostInterface::registerForGroup(const string &group, const string &hostName)
throw (VNetworkException &)
{
    PSNetworkClient clientSocket(*_networkAddress, true, false);
    Connection& connection = clientSocket.getConn(PSSecret::readSecret());

    char buf[MAXLINE];
    sprintf(buf, "%s %s %s\n", REGISTER_GROUP_REQ,
            group.c_str(), hostName.c_str());
    string regReq(buf);
    connection.writeData(regReq);
}


void
HostInterface::unregisterForItem(const string &group, const string &name,
                                 const string &hostName)
throw (VNetworkException &)
{
    PSNetworkClient clientSocket(*_networkAddress, true, false);
    Connection& connection = clientSocket.getConn(PSSecret::readSecret());

    char buf[MAXLINE];
    sprintf(buf, "%s %s %s %s\n", UNREGISTER_ITEM_REQ,
            group.c_str(), name.c_str(), hostName.c_str());
    string regReq(buf);
    connection.writeData(regReq);
}


void
HostInterface::unregisterForGroup(const string &group, const string &hostName)
throw (VNetworkException &)
{
    PSNetworkClient clientSocket(*_networkAddress, true, false);
    Connection& connection = clientSocket.getConn(PSSecret::readSecret());

    char buf[MAXLINE];
    sprintf(buf, "%s %s %s\n", UNREGISTER_GROUP_REQ,
            group.c_str(), hostName.c_str());
    string regReq(buf);
    connection.writeData(regReq);
}


/* Local Variables: */
/* c-file-style: "stroustrup" */
/* indent-tabs-mode: nil */
/* c-file-offsets: ((access-label . -) (inclass . ++)) */
/* c-basic-offset: 4 */
/* End: */