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478 lines
11 KiB
478 lines
11 KiB
/*
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* Copyright (C) 2003,2005 Thiago Macieira <thiago.macieira@kdemail.net>
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*
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <config.h>
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#include <tqsocketnotifier.h>
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#include <tqtimer.h>
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#include <tqmutex.h>
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#include "tdesocketaddress.h"
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#include "kresolver.h"
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#include "tdesocketbase.h"
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#include "tdesocketdevice.h"
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#include "kclientsocketbase.h"
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using namespace KNetwork;
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class KNetwork::KClientSocketBasePrivate
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{
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public:
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int state;
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KResolver localResolver, peerResolver;
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KResolverResults localResults, peerResults;
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bool enableRead : 1, enableWrite : 1;
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};
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KClientSocketBase::KClientSocketBase(TQObject *parent, const char *name) :
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TQObject(parent, name), d(new KClientSocketBasePrivate)
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{
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d->state = Idle;
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d->enableRead = true;
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d->enableWrite = false;
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}
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KClientSocketBase::~KClientSocketBase()
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{
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close();
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delete d;
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}
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KClientSocketBase::SocketState KClientSocketBase::state() const
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{
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return static_cast<SocketState>(d->state);
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}
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void KClientSocketBase::setState(SocketState state)
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{
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d->state = state;
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stateChanging(state);
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}
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bool KClientSocketBase::setSocketOptions(int opts)
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{
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TQMutexLocker locker(mutex());
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TDESocketBase::setSocketOptions(opts); // call parent
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// don't create the device unnecessarily
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if (hasDevice())
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{
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bool result = socketDevice()->setSocketOptions(opts); // and set the implementation
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copyError();
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return result;
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}
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return true;
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}
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KResolver& KClientSocketBase::peerResolver() const
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{
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return d->peerResolver;
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}
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const KResolverResults& KClientSocketBase::peerResults() const
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{
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return d->peerResults;
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}
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KResolver& KClientSocketBase::localResolver() const
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{
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return d->localResolver;
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}
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const KResolverResults& KClientSocketBase::localResults() const
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{
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return d->localResults;
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}
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void KClientSocketBase::setResolutionEnabled(bool enable)
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{
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if (enable)
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{
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d->localResolver.setFlags(d->localResolver.flags() & ~KResolver::NoResolve);
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d->peerResolver.setFlags(d->peerResolver.flags() & ~KResolver::NoResolve);
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}
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else
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{
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d->localResolver.setFlags(d->localResolver.flags() | KResolver::NoResolve);
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d->peerResolver.setFlags(d->peerResolver.flags() | KResolver::NoResolve);
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}
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}
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void KClientSocketBase::setFamily(int families)
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{
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d->localResolver.setFamily(families);
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d->peerResolver.setFamily(families);
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}
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bool KClientSocketBase::lookup()
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{
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if (state() == HostLookup && !blocking())
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return true; // already doing lookup
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if (state() > HostLookup)
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return true; // results are already available
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if (state() < HostLookup)
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{
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if (d->localResolver.serviceName().isNull() &&
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!d->localResolver.nodeName().isNull())
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d->localResolver.setServiceName(TQString::fromLatin1(""));
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// don't restart the lookups if they had succeeded and
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// the input values weren't changed
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TQObject::connect(&d->peerResolver, TQT_SIGNAL(finished(KResolverResults)),
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this, TQT_SLOT(lookupFinishedSlot()));
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TQObject::connect(&d->localResolver, TQT_SIGNAL(finished(KResolverResults)),
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this, TQT_SLOT(lookupFinishedSlot()));
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if (d->localResolver.status() <= 0)
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d->localResolver.start();
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if (d->peerResolver.status() <= 0)
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d->peerResolver.start();
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setState(HostLookup);
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emit stateChanged(HostLookup);
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if (!d->localResolver.isRunning() && !d->peerResolver.isRunning())
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{
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// if nothing is running, then the lookup results are still valid
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// pretend we had done lookup
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if (blocking())
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lookupFinishedSlot();
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else
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TQTimer::singleShot(0, this, TQT_SLOT(lookupFinishedSlot()));
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}
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else
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{
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d->localResults = d->peerResults = KResolverResults();
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}
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}
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if (blocking())
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{
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// we're in blocking mode operation
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// wait for the results
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localResolver().wait();
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peerResolver().wait();
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// lookupFinishedSlot has been called
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}
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return true;
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}
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bool KClientSocketBase::bind(const KResolverEntry& address)
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{
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if (state() == HostLookup || state() > Connecting)
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return false;
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if (socketDevice()->bind(address))
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{
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resetError();
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// don't set the state or emit signals if we are in a higher state
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if (state() < Bound)
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{
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setState(Bound);
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emit stateChanged(Bound);
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emit bound(address);
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}
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return true;
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}
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return false;
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}
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bool KClientSocketBase::connect(const KResolverEntry& address)
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{
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if (state() == Connected)
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return true; // to be compliant with the other classes
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if (state() == HostLookup || state() > Connecting)
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return false;
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bool ok = socketDevice()->connect(address);
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copyError();
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if (ok)
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{
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SocketState newstate;
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if (error() == InProgress)
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newstate = Connecting;
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else
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newstate = Connected;
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if (state() < newstate)
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{
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setState(newstate);
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emit stateChanged(newstate);
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if (error() == NoError)
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{
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setFlags(IO_Sequential | IO_Raw | IO_ReadWrite | IO_Open | IO_Async);
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emit connected(address);
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}
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}
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return true;
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}
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return false;
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}
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bool KClientSocketBase::disconnect()
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{
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if (state() != Connected)
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return false;
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bool ok = socketDevice()->disconnect();
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copyError();
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if (ok)
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{
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setState(Unconnected);
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emit stateChanged(Unconnected);
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return true;
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}
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return false;
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}
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void KClientSocketBase::close()
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{
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if (state() == Idle)
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return; // nothing to do
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if (state() == HostLookup)
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{
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d->peerResolver.cancel(false);
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d->localResolver.cancel(false);
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}
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d->localResults = d->peerResults = KResolverResults();
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socketDevice()->close();
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setState(Idle);
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emit stateChanged(Idle);
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emit closed();
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}
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// This function is unlike all the others because it is const
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TQ_LONG KClientSocketBase::bytesAvailable() const
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{
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return socketDevice()->bytesAvailable();
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}
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// All the functions below look really alike
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// Should I use a macro to define them?
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TQ_LONG KClientSocketBase::waitForMore(int msecs, bool *timeout)
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{
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resetError();
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TQ_LONG retval = socketDevice()->waitForMore(msecs, timeout);
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if (retval == -1)
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{
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copyError();
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emit gotError(error());
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}
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return retval;
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}
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TQT_TQIO_LONG KClientSocketBase::tqreadBlock(char *data, TQT_TQIO_ULONG maxlen)
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{
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resetError();
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TQ_LONG retval = socketDevice()->tqreadBlock(data, maxlen);
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if (retval == -1)
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{
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copyError();
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emit gotError(error());
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}
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return retval;
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}
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TQT_TQIO_LONG KClientSocketBase::tqreadBlock(char *data, TQT_TQIO_ULONG maxlen, TDESocketAddress& from)
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{
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resetError();
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TQ_LONG retval = socketDevice()->tqreadBlock(data, maxlen, from);
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if (retval == -1)
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{
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copyError();
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emit gotError(error());
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}
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return retval;
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}
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TQ_LONG KClientSocketBase::peekBlock(char *data, TQ_ULONG maxlen)
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{
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resetError();
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TQ_LONG retval = socketDevice()->peekBlock(data, maxlen);
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if (retval == -1)
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{
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copyError();
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emit gotError(error());
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}
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return retval;
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}
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TQ_LONG KClientSocketBase::peekBlock(char *data, TQ_ULONG maxlen, TDESocketAddress& from)
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{
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resetError();
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TQ_LONG retval = socketDevice()->peekBlock(data, maxlen, from);
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if (retval == -1)
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{
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copyError();
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emit gotError(error());
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}
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return retval;
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}
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TQT_TQIO_LONG KClientSocketBase::tqwriteBlock(const char *data, TQT_TQIO_ULONG len)
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{
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resetError();
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TQ_LONG retval = socketDevice()->tqwriteBlock(data, len);
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if (retval == -1)
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{
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copyError();
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emit gotError(error());
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}
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return retval;
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}
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TQT_TQIO_LONG KClientSocketBase::tqwriteBlock(const char *data, TQT_TQIO_ULONG len, const TDESocketAddress& to)
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{
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resetError();
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TQ_LONG retval = socketDevice()->tqwriteBlock(data, len, to);
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if (retval == -1)
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{
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copyError();
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emit gotError(error());
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}
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return retval;
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}
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TDESocketAddress KClientSocketBase::localAddress() const
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{
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return socketDevice()->localAddress();
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}
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TDESocketAddress KClientSocketBase::peerAddress() const
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{
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return socketDevice()->peerAddress();
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}
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bool KClientSocketBase::emitsReadyRead() const
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{
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return d->enableRead;
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}
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void KClientSocketBase::enableRead(bool enable)
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{
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TQMutexLocker locker(mutex());
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d->enableRead = enable;
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TQSocketNotifier *n = socketDevice()->readNotifier();
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if (n)
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n->setEnabled(enable);
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}
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bool KClientSocketBase::emitsReadyWrite() const
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{
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return d->enableWrite;
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}
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void KClientSocketBase::enableWrite(bool enable)
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{
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TQMutexLocker locker(mutex());
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d->enableWrite = enable;
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TQSocketNotifier *n = socketDevice()->writeNotifier();
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if (n)
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n->setEnabled(enable);
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}
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void KClientSocketBase::slotReadActivity()
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{
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if (d->enableRead)
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emit readyRead();
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}
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void KClientSocketBase::slotWriteActivity()
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{
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if (d->enableWrite)
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emit readyWrite();
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}
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void KClientSocketBase::lookupFinishedSlot()
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{
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if (d->peerResolver.isRunning() || d->localResolver.isRunning() || state() != HostLookup)
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return;
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TQObject::disconnect(&d->peerResolver, 0L, this, TQT_SLOT(lookupFinishedSlot()));
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TQObject::disconnect(&d->localResolver, 0L, this, TQT_SLOT(lookupFinishedSlot()));
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if (d->peerResolver.status() < 0 || d->localResolver.status() < 0)
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{
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setState(Idle); // backtrack
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setError(IO_LookupError, LookupFailure);
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emit stateChanged(Idle);
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emit gotError(LookupFailure);
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return;
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}
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d->localResults = d->localResolver.results();
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d->peerResults = d->peerResolver.results();
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setState(HostFound);
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emit stateChanged(HostFound);
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emit hostFound();
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}
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void KClientSocketBase::stateChanging(SocketState newState)
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{
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if (newState == Connected && socketDevice())
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{
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TQSocketNotifier *n = socketDevice()->readNotifier();
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if (n)
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{
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n->setEnabled(d->enableRead);
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TQObject::connect(n, TQT_SIGNAL(activated(int)), this, TQT_SLOT(slotReadActivity()));
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}
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else
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return;
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n = socketDevice()->writeNotifier();
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if (n)
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{
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n->setEnabled(d->enableWrite);
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TQObject::connect(n, TQT_SIGNAL(activated(int)), this, TQT_SLOT(slotWriteActivity()));
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}
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else
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return;
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}
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}
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void KClientSocketBase::copyError()
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{
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setError(socketDevice()->status(), socketDevice()->error());
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}
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#include "kclientsocketbase.moc"
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