2010-09-24 08:48:01 -05:00
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/*
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* connection.cpp
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* libmsn
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*
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* Created by Mark Rowe on Mon Mar 22 2004.
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* Refactored by Tiago Salem Herrmann on 08/2007.
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* Copyright (c) 2004 Mark Rowe. All rights reserved.
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* Copyright (c) 2007 Tiago Salem Herrmann. All rights reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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2012-02-25 21:35:45 -06:00
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#include <connection.h>
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#include <errorcodes.h>
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#include <util.h>
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#include <passport.h>
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#include <externals.h>
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#include <notificationserver.h>
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2010-09-24 08:48:01 -05:00
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#ifndef WIN32
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <arpa/inet.h>
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#else
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#include <winsock.h>
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#include <io.h>
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <cerrno>
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#include <time.h>
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#include <cassert>
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namespace MSN
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{
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static std::vector<std::string> errors;
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Connection::Connection()
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: sock(NULL), connected(false), trID(1)
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{
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srand((unsigned int) time(NULL));
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if (errors.size() != 0)
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{
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assert(errors.size() == 1000);
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}
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else
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{
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errors.resize(1000);
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for (int a = 0; a < 1000; a++)
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{
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errors[a] = "Unknown error code";
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}
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errors[200] = "Syntax error";
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errors[201] = "Invalid parameter";
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errors[205] = "Invalid user";
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errors[206] = "Domain name missing from username";
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errors[207] = "Already logged in";
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errors[208] = "Invalid username";
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errors[209] = "Invalid friendly name";
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errors[210] = "List full";
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errors[215] = "This user is already on this list or in this session";
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errors[216] = "Not on list";
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errors[218] = "Already in this mode";
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errors[219] = "This user is already in the opposite list";
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errors[241] = "Unable to add user";
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errors[280] = "Switchboard server failed";
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errors[281] = "Transfer notification failed";
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errors[300] = "Required fields missing";
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errors[302] = "Not logged in";
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errors[500] = "Internal server error";
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errors[501] = "Database server error";
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errors[510] = "File operation failed at server";
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errors[520] = "Memory allocation failed on server";
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errors[600] = "The server is too busy";
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errors[601] = "The server is unavailable";
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errors[602] = "A Peer Notification Server is down";
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errors[603] = "Database connection failed";
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errors[604] = "Server going down for maintenance";
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errors[707] = "Server failed to create connection";
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errors[711] = "Blocking write failed on server";
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errors[712] = "Session overload on server";
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errors[713] = "You have been too active recently. Slow down!";
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errors[714] = "Too many sessions open";
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errors[715] = "Email Address Not verified";
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errors[717] = "Bad friend file on server";
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errors[911] = "Authentication failed. Check that you typed your username and password correctly.";
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errors[913] = "This action is not allowed while you are offline";
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errors[920] = "This server is not accepting new users";
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errors[921] = "Error synchronizing lists";
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errors[922] = "Error synchronizing address book";
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}
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}
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Connection::~Connection() { }
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void Connection::disconnect()
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{
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this->connected = false;
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this->myNotificationServer()->externalCallbacks.unregisterSocket(this->sock);
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this->myNotificationServer()->externalCallbacks.closeSocket(this->sock);
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this->sock = NULL;
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this->writeBuffer.erase();
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this->readBuffer.erase();
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this->trID = 1;
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}
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std::vector<std::string> Connection::getLine()
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{
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assert(this->isWholeLineAvailable());
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std::string s = this->readBuffer.substr(0, this->readBuffer.find("\r\n"));
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this->myNotificationServer()->externalCallbacks.log(0, (s + "\n").c_str());
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return splitString(s, " ");
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}
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bool Connection::isWholeLineAvailable()
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{
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return this->readBuffer.find("\r\n") != std::string::npos;
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}
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void Connection::errorOnSocket(int errno_)
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{
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this->myNotificationServer()->externalCallbacks.showError(this, strerror(errno_));
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this->disconnect();
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}
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void Connection::socketConnectionCompleted()
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{
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this->connected = true;
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if(this->writeBuffer.size())
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{
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// We know that we are connected, so this will try writing to the network.
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size_t writtenLength = this->write(this->writeBuffer, 1);
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if(writtenLength > 0 && this->writeBuffer.size() > 0)
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this->writeBuffer = this->writeBuffer.substr(writtenLength);
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}
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}
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size_t Connection::write(std::string s, bool log) throw (std::runtime_error)
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{
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if(s.size() < 0)
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return 0;
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if (! this->connected)
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{
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this->writeBuffer.append(s);
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}
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else
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{
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if (log)
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this->myNotificationServer()->externalCallbacks.log(1, s.c_str());
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char *a = (char*)s.c_str();
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size_t written = this->myNotificationServer()->
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externalCallbacks.writeDataToSocket(sock, a, (int) (s.size()));
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return written;
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}
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return s.size();
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}
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size_t Connection::write(std::ostringstream & ss, bool log) throw (std::runtime_error)
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{
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std::string s = ss.str();
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#ifdef DEBUG
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std::cout << s << std::endl;
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#endif
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size_t result = write(s, log);
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return result;
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}
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void Connection::dataArrivedOnSocket()
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{
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char tempReadBuffer[8192];
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int amountRead = 8192;
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std::string tempRead;
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while (amountRead == 8192)
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{
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amountRead = this->myNotificationServer()->externalCallbacks.getDataFromSocket(sock, tempReadBuffer, 8192);
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if(amountRead < 0)
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break;
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tempRead+= std::string(tempReadBuffer,amountRead);
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}
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if (tempRead.length() < 0)
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{
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// We shouldn't be here because dataArrivedOnSocket
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// is only called when select/poll etc has told us that
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// the socket is readable.
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// assert(errno != EAGAIN);
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this->myNotificationServer()->externalCallbacks.showError(this, "No data to read");
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this->disconnect();
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}
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else if (amountRead == 0)
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{
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this->myNotificationServer()->externalCallbacks.showError(this, "Connection closed by remote endpoint.");
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this->disconnect();
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}
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else
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{
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this->readBuffer += tempRead;
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#ifdef DEBUG
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std::cout << tempRead << std::endl;
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#endif
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try
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{
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handleIncomingData();
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}
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catch (std::exception & e)
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{
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this->myNotificationServer()->externalCallbacks.showError(this, e.what());
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}
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}
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}
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void Connection::showError(int errorCode)
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{
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std::ostringstream buf_;
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buf_ << "Error code: " << errorCode << " (" << errors[errorCode] << ")";
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this->myNotificationServer()->externalCallbacks.showError(this, buf_.str());
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}
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}
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