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/*
* Dibbler - a portable DHCPv6
*
* authors: Tomasz Mrugalski <thomson@klub.com.pl>
* Marek Senderski <msend@o2.pl>
*
* released under GNU GPL v2 only licence
*
* $Id: DHCPClient.cpp,v 1.33 2008-11-13 22:18:17 thomson Exp $
*
*/
#include <iostream>
#include <stdlib.h>
#include "SmartPtr.h"
#include "DHCPClient.h"
#include "ClntTransMgr.h"
#include "IfaceMgr.h"
#include "ClntIfaceMgr.h"
#include "Logger.h"
#include "Portable.h"
volatile int serviceShutdown;
volatile int linkstateChange;
TDHCPClient::TDHCPClient(string config)
{
serviceShutdown = 0;
linkstateChange = 0;
srand(now());
this->IsDone = false;
IfaceMgr = new TClntIfaceMgr(CLNTIFACEMGR_FILE);
if ( this->IfaceMgr->isDone() ) {
Log(Crit) << "Fatal error during IfaceMgr initialization." << LogEnd;
this->IsDone = true;
return;
}
this->CfgMgr = new TClntCfgMgr(IfaceMgr, config);
if ( this->CfgMgr->isDone() ) {
Log(Crit) << "Fatal error during CfgMgr initialization." << LogEnd;
this->IsDone = true;
return;
}
this->AddrMgr = new TClntAddrMgr(CfgMgr, CLNTADDRMGR_FILE, false);
if ( this->AddrMgr->isDone() ) {
Log(Crit) << "Fatal error during AddrMgr initialization." << LogEnd;
this->IsDone = true;
return;
}
this->TransMgr = new TClntTransMgr(IfaceMgr, AddrMgr, CfgMgr, CLNTTRANSMGR_FILE);
if ( this->TransMgr->isDone() ) {
Log(Crit) << "Fatal error during TransMgr initialization." << LogEnd;
this->IsDone = true;
return;
}
if (CfgMgr->useConfirm())
initLinkStateChange();
TransMgr->setContext(TransMgr);
}
/**
* initializes low-level link state change detection mechanism
*
*/
void TDHCPClient::initLinkStateChange()
{
Log(Debug) << "LinkState change detection not fully supported (disabled for now)." << LogEnd;
return; // disable this for now
memset((void*)&this->linkstates, 0, sizeof(linkstates));
CfgMgr->firstIface();
SPtr<TClntCfgIface> iface;
Log(Debug) << "Initialising link-state detection for interfaces: ";
while (iface = CfgMgr->getIface())
{
linkstates.ifindex[linkstates.cnt++] = iface->getID();
Log(Cont) << iface->getID() << " ";
}
Log(Cont) << LogEnd;
link_state_change_init(&linkstates, &linkstateChange);
}
void TDHCPClient::stop() {
serviceShutdown = 1;
if (CfgMgr->useConfirm())
link_state_change_cleanup();
#ifdef WIN32
// just to break select() in WIN32 systems
SmartPtr<TIfaceIface> iface = IfaceMgr->getIfaceByID(TransMgr->getCtrlIface());
Log(Warning) << "Sending SHUTDOWN packet on the " << iface->getName()
<< "/" << iface->getID() << " (addr=" << TransMgr->getCtrlAddr() << ")." << LogEnd;
int fd = sock_add("", TransMgr->getCtrlIface(),"::",0,true, false);
char buf = CONTROL_MSG;
int cnt=sock_send(fd,TransMgr->getCtrlAddr(),&buf,1,DHCPCLIENT_PORT,TransMgr->getCtrlIface());
sock_del(fd);
#endif
}
/* Function removed. Please use link_state_changed() instead */
/* void TDHCPClient::changeLinkstate(int iface_id) */
void TDHCPClient::resetLinkstate() {
linkstates.cnt = 0;
for (int i = 0; i<MAX_LINK_STATE_CHANGES_AT_ONCE; i++)
linkstates.ifindex[i]=0; // ugly, but safe way of zeroing table
linkstateChange = 0;
}
char* TDHCPClient::getCtrlIface(){
SmartPtr<TIfaceIface> iface = IfaceMgr->getIfaceByID(TransMgr->getCtrlIface());
return iface->getName();
;
}
void TDHCPClient::run()
{
SmartPtr<TMsg> msg;
while ( (!this->isDone()) && !TransMgr->isDone() )
{
if (serviceShutdown)
TransMgr->shutdown();
if (linkstateChange) {
AddrMgr->setIA2Confirm(&linkstates);
this->resetLinkstate();
}
TransMgr->doDuties();
unsigned int timeout = TransMgr->getTimeout();
if (timeout == 0)
timeout = 1;
Log(Debug) << "Sleeping for " << timeout << " second(s)." << LogEnd;
SmartPtr<TClntMsg> msg=IfaceMgr->select(timeout);
if (msg) {
int iface = msg->getIface();
SmartPtr<TIfaceIface> ptrIface;
ptrIface = IfaceMgr->getIfaceByID(iface);
Log(Info) << "Received " << msg->getName() << " on " << ptrIface->getName()
<< "/" << iface << hex << ",TransID=0x" << msg->getTransID()
<< dec << ", " << msg->countOption() << " opts:";
SmartPtr<TOpt> ptrOpt;
msg->firstOption();
while (ptrOpt = msg->getOption() )
Log(Cont) << " " << ptrOpt->getOptType();
Log(Cont) << LogEnd;
TransMgr->relayMsg(msg);
}
}
Log(Notice) << "Bye bye." << LogEnd;
}
bool TDHCPClient::isDone() {
return IsDone;
}
bool TDHCPClient::checkPrivileges() {
// FIXME: check privileges
return true;
}
void TDHCPClient::setWorkdir(std::string workdir) {
if (this->CfgMgr) {
this->CfgMgr->setWorkdir(workdir);
this->CfgMgr->dump();
}
}
SmartPtr<TClntAddrMgr> TDHCPClient::getAddrMgr() {
return this->AddrMgr;
}
SmartPtr<TClntCfgMgr> TDHCPClient::getCfgMgr() {
return this->CfgMgr;
}
TDHCPClient::~TDHCPClient()
{
if (TransMgr)
TransMgr->setContext(0);
this->TransMgr = 0;
this->AddrMgr = 0;
this->CfgMgr = 0;
this->IfaceMgr = 0;
}
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