kextsock.cpp
/*
* This file is part of the KDE libraries
* Copyright (C) 2000-2004 Thiago Macieira <thiago.macieira@kdemail.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
**/
#include <config.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/times.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/un.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <stdlib.h>
#include <unistd.h>
#include <qglobal.h>
#include <qstring.h>
#include <qiodevice.h>
#include <qsocketnotifier.h>
#include <qguardedptr.h>
#include "kresolver.h"
#include "kdebug.h"
#include "kextsock.h"
#include "ksockaddr.h"
#include "ksocks.h"
#ifdef __CYGWIN__
#include "netsupp.h"
#endif
using namespace KNetwork;
//
// Internal class definitions
//
class KExtendedSocketPrivate
{
public:
int flags; // socket flags
int status; // status
int syserror; // the system error value
timeval timeout; // connection/acception timeout
KResolver resRemote; // the resolved addresses
KResolver resLocal; // binding resolution
unsigned current; // used by the asynchronous connection
::KSocketAddress *local; // local socket address
::KSocketAddress *peer; // peer socket address
QSocketNotifier *qsnIn, *qsnOut;
int inMaxSize, outMaxSize;
bool emitRead : 1, emitWrite : 1;
mutable bool addressReusable : 1, ipv6only : 1;
KExtendedSocketPrivate() :
flags(0), status(0), syserror(0),
current(0), local(0), peer(0),
qsnIn(0), qsnOut(0), inMaxSize(-1), outMaxSize(-1), emitRead(false), emitWrite(false),
addressReusable(false), ipv6only(false)
{
timeout.tv_sec = timeout.tv_usec = 0;
}
};
// translate KExtendedSocket flags into KResolver ones
static bool process_flags(int flags, int& socktype, int& familyMask, int& outflags)
{
switch (flags & (KExtendedSocket::streamSocket | KExtendedSocket::datagramSocket | KExtendedSocket::rawSocket))
{
case 0:
/* No flags given, use default */
case KExtendedSocket::streamSocket:
/* streaming socket requested */
socktype = SOCK_STREAM;
break;
case KExtendedSocket::datagramSocket:
/* datagram packet socket requested */
socktype = SOCK_DGRAM;
break;
case KExtendedSocket::rawSocket:
/* raw socket requested. I wouldn't do this if I were you... */
socktype = SOCK_RAW;
break;
default:
/* the flags were used in an invalid manner */
return false;
}
if (flags & KExtendedSocket::knownSocket)
{
familyMask = 0;
if ((flags & KExtendedSocket::unixSocket) == KExtendedSocket::unixSocket)
familyMask |= KResolver::UnixFamily;
switch ((flags & (KExtendedSocket::ipv6Socket|KExtendedSocket::ipv4Socket)))
{
case KExtendedSocket::ipv4Socket:
familyMask |= KResolver::IPv4Family;
break;
case KExtendedSocket::ipv6Socket:
familyMask |= KResolver::IPv6Family;
break;
case KExtendedSocket::inetSocket:
familyMask |= KResolver::InternetFamily;
break;
}
// those are all the families we know about
}
else
familyMask = KResolver::KnownFamily;
/* check other flags */
outflags = (flags & KExtendedSocket::passiveSocket ? KResolver::Passive : 0) |
(flags & KExtendedSocket::canonName ? KResolver::CanonName : 0) |
(flags & KExtendedSocket::noResolve ? KResolver::NoResolve : 0);
if (getenv("KDE_NO_IPV6"))
familyMask &= ~KResolver::IPv6Family;
return true;
}
// "skips" at most len bytes from file descriptor fd
// that is, we will try and read that much data and discard
// it. We will stop when we have read those or when the read
// function returns error
static int skipData(int fd, unsigned len)
{
char buf[1024];
unsigned skipped = 0;
while (len)
{
int count = sizeof(buf);
if ((unsigned)count > len)
count = len;
count = KSocks::self()->read(fd, buf, count);
if (count == -1)
return -1;
else
{
len -= count;
skipped += count;
}
}
return skipped;
}
/*
* class KExtendedSocket
*/
// default constructor
KExtendedSocket::KExtendedSocket() :
sockfd(-1), d(new KExtendedSocketPrivate)
{
}
// constructor with hostname
KExtendedSocket::KExtendedSocket(const QString& host, int port, int flags) :
sockfd(-1), d(new KExtendedSocketPrivate)
{
setAddress(host, port);
setSocketFlags(flags);
}
// same
KExtendedSocket::KExtendedSocket(const QString& host, const QString& service, int flags) :
sockfd(-1), d(new KExtendedSocketPrivate)
{
setAddress(host, service);
setSocketFlags(flags);
}
// destroy the class
KExtendedSocket::~KExtendedSocket()
{
closeNow();
if (d->local != NULL)
delete d->local;
if (d->peer != NULL)
delete d->peer;
if (d->qsnIn != NULL)
delete d->qsnIn;
if (d->qsnOut != NULL)
delete d->qsnOut;
delete d;
}
void KExtendedSocket::reset()
{
closeNow();
release();
d->current = 0;
d->status = nothing;
d->syserror = 0;
}
int KExtendedSocket::socketStatus() const
{
return d->status;
}
void KExtendedSocket::setSocketStatus(int newstatus)
{
d->status = newstatus;
}
void KExtendedSocket::setError(int errorcode, int syserror)
{
setStatus(errorcode);
d->syserror = syserror;
}
int KExtendedSocket::systemError() const
{
return d->syserror;
}
/*
* Sets socket flags
* This is only allowed if we are in nothing state
*/
int KExtendedSocket::setSocketFlags(int flags)
{
if (d->status > nothing)
return -1; // error!
return d->flags = flags;
}
int KExtendedSocket::socketFlags() const
{
return d->flags;
}
/*
* Sets socket target hostname
* This is only allowed if we are in nothing state
*/
bool KExtendedSocket::setHost(const QString& host)
{
if (d->status > nothing)
return false; // error!
d->resRemote.setNodeName(host);
return true;
}
/*
* returns the hostname
*/
QString KExtendedSocket::host() const
{
return d->resRemote.nodeName();
}
/*
* Sets the socket target port/service
* Same thing: only state 'nothing'
*/
bool KExtendedSocket::setPort(int port)
{
return setPort(QString::number(port));
}
bool KExtendedSocket::setPort(const QString& service)
{
if (d->status > nothing)
return false; // error
d->resRemote.setServiceName(service);
return true;
}
/*
* returns the service port number
*/
QString KExtendedSocket::port() const
{
return d->resRemote.serviceName();
}
/*
* sets the address
*/
bool KExtendedSocket::setAddress(const QString& host, int port)
{
return setHost(host) && setPort(port);
}
/*
* the same
*/
bool KExtendedSocket::setAddress(const QString& host, const QString& serv)
{
return setHost(host) && setPort(serv);
}
/*
* Sets the bind hostname
* This is only valid in the 'nothing' state and if this is not a
* passiveSocket socket
*/
bool KExtendedSocket::setBindHost(const QString& host)
{
if (d->status > nothing || d->flags & passiveSocket)
return false; // error
d->resLocal.setServiceName(host);
return true;
}
/*
* Unsets the bind hostname
* same thing
*/
bool KExtendedSocket::unsetBindHost()
{
return setBindHost(QString::null);
}
/*
* returns the binding host
*/
QString KExtendedSocket::bindHost() const
{
return d->resLocal.serviceName();
}
/*
* Sets the bind port
* Same condition as setBindHost
*/
bool KExtendedSocket::setBindPort(int port)
{
return setBindPort(QString::number(port));
}
bool KExtendedSocket::setBindPort(const QString& service)
{
if (d->status > nothing || d->flags & passiveSocket)
return false; // error
d->resLocal.setServiceName(service);
return true;
}
/*
* unsets the bind port
*/
bool KExtendedSocket::unsetBindPort()
{
return setBindPort(QString::null);
}
/*
* returns the binding port
*/
QString KExtendedSocket::bindPort() const
{
return d->resLocal.serviceName();
}
/*
* sets the binding address
*/
bool KExtendedSocket::setBindAddress(const QString& host, int port)
{
return setBindHost(host) && setBindPort(port);
}
/*
* same
*/
bool KExtendedSocket::setBindAddress(const QString& host, const QString& service)
{
return setBindHost(host) && setBindPort(service);
}
/*
* unsets binding address
*/
bool KExtendedSocket::unsetBindAddress()
{
return unsetBindHost() && unsetBindPort();
}
/*
* sets the timeout for the connection
*/
bool KExtendedSocket::setTimeout(int secs, int usecs)
{
if (d->status >= connected) // closed?
return false;
d->timeout.tv_sec = secs;
d->timeout.tv_usec = usecs;
return true;
}
/*
* returns the timeout
*/
timeval KExtendedSocket::timeout() const
{
return d->timeout;
}
/*
* Sets the blocking mode on this socket
*/
bool KExtendedSocket::setBlockingMode(bool enable)
{
cleanError();
if (d->status < created)
return false;
if (sockfd == -1)
return false; // error!
int fdflags = fcntl(sockfd, F_GETFL, 0);
if (fdflags == -1)
return false; // error!
if (!enable)
fdflags |= O_NONBLOCK;
else
fdflags &= ~O_NONBLOCK;
if (fcntl(sockfd, F_SETFL, fdflags) == -1)
{
setError(IO_UnspecifiedError, errno);
return false;
}
return true;
}
/*
* Returns the blocking mode on the socket
*/
bool KExtendedSocket::blockingMode()
{
cleanError();
if (d->status < created)
return false; // sockets not created are in blocking mode
if (sockfd == -1)
return false; // error
int fdflags = fcntl(sockfd, F_GETFL, 0);
if (fdflags == -1)
{
setError(IO_UnspecifiedError, errno);
return false;
}
return (fdflags & O_NONBLOCK) == 0; // non-blocking == false
}
/*
* Sets the reusability flag for this socket in the OS
*/
bool KExtendedSocket::setAddressReusable(bool enable)
{
cleanError();
d->addressReusable = enable;
if (d->status < created)
return true;
if (sockfd == -1)
return true;
if (!setAddressReusable(sockfd, enable))
{
setError(IO_UnspecifiedError, errno);
return false;
}
return true;
}
bool KExtendedSocket::setAddressReusable(int fd, bool enable)
{
if (fd == -1)
return false;
int on = enable; // just to be on the safe side
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on)) == -1)
return false;
return true;
}
/*
* Retrieves the reusability flag for this socket
*/
bool KExtendedSocket::addressReusable()
{
cleanError();
if (d->status < created)
return d->addressReusable;
if (sockfd == -1)
return d->addressReusable;
int on;
socklen_t onsiz = sizeof(on);
if (getsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, &onsiz) == -1)
{
setError(IO_UnspecifiedError, errno);
return false;
}
return on != 0;
}
/*
* Set the IPV6_V6ONLY flag
*/
bool KExtendedSocket::setIPv6Only(bool enable)
{
#ifdef IPV6_V6ONLY
cleanError();
d->ipv6only = enable;
if (sockfd == -1)
return true; // can't set on a non-existing socket
int on = enable;
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_V6ONLY,
(char *)&on, sizeof(on)) == -1)
{
setError(IO_UnspecifiedError, errno);
return false;
}
else
return true;
#else
// we don't have the IPV6_V6ONLY constant in this system
d->ipv6only = enable;
setError(IO_UnspecifiedError, ENOSYS);
return false; // can't set if we don't know about this flag
#endif
}
/*
* retrieve the IPV6_V6ONLY flag
*/
bool KExtendedSocket::isIPv6Only()
{
#ifdef IPV6_V6ONLY
cleanError();
if (d->status < created || sockfd == -1)
return d->ipv6only;
int on;
socklen_t onsiz = sizeof(on);
if (getsockopt(sockfd, IPPROTO_IPV6, IPV6_V6ONLY,
(char *)&on, &onsiz) == -1)
{
setError(IO_UnspecifiedError, errno);
return false;
}
return d->ipv6only = on;
#else
// we don't have the constant
setError(IO_UnspecifiedError, ENOSYS);
return false;
#endif
}
/*
* Sets the buffer sizes in this socket
* Also, we create or delete the socket notifiers
*/
bool KExtendedSocket::setBufferSize(int rsize, int wsize)
{
cleanError();
if (d->status < created)
return false;
if (sockfd == -1)
return false;
if (d->flags & passiveSocket)
return false; // no I/O on passive sockets
if (rsize < -2)
return false;
if (wsize < -2)
return false;
// LOCK BUFFER MUTEX
// The input socket notifier is always enabled
// That happens because we want to be notified of when the socket gets
// closed
if (d->qsnIn == NULL)
{
d->qsnIn = new QSocketNotifier(sockfd, QSocketNotifier::Read);
QObject::connect(d->qsnIn, SIGNAL(activated(int)), this, SLOT(socketActivityRead()));
d->qsnIn->setEnabled(true);
}
if (rsize == 0 && d->flags & inputBufferedSocket)
{
// user wants to disable input buffering
d->flags &= ~inputBufferedSocket;
consumeReadBuffer(readBufferSize(), NULL, true);
d->inMaxSize = 0;
}
else if (rsize != -2)
{
// enabling input buffering
if (rsize)
d->flags |= inputBufferedSocket;
d->inMaxSize = rsize;
if (rsize > 0 && (unsigned)rsize < readBufferSize())
// input buffer has more data than the new size; discard
consumeReadBuffer(readBufferSize() - rsize, NULL, true);
}
if (wsize == 0 && d->flags & outputBufferedSocket)
{
// disabling output buffering
d->flags &= ~outputBufferedSocket;
if (d->qsnOut && !d->emitWrite)
d->qsnOut->setEnabled(false);
consumeWriteBuffer(writeBufferSize());
d->outMaxSize = 0;
}
else if (wsize != -2)
{
// enabling input buffering
if (wsize)
d->flags |= outputBufferedSocket;
d->outMaxSize = wsize;
if (wsize > 0 && (unsigned)wsize < writeBufferSize())
// output buffer is bigger than it is to become; shrink
consumeWriteBuffer(writeBufferSize() - wsize);
if (d->qsnOut == NULL)
{
d->qsnOut = new QSocketNotifier(sockfd, QSocketNotifier::Write);
QObject::connect(d->qsnOut, SIGNAL(activated(int)), this, SLOT(socketActivityWrite()));
// if the class is being created now, there's nothing to write yet
// so socketActivityWrite() will get called once and disable
// the notifier
}
}
// UNLOCK BUFFER MUTEX
setFlags((mode() & ~IO_Raw) | ((d->flags & bufferedSocket) ? 0 : IO_Raw));
// check we didn't turn something off we shouldn't
if (d->emitWrite && d->qsnOut == NULL)
{
d->qsnOut = new QSocketNotifier(sockfd, QSocketNotifier::Write);
QObject::connect(d->qsnOut, SIGNAL(activated(int)), this, SLOT(socketActivityWrite()));
}
return true;
}
/*
* Finds the local address for this socket
* if we have done this already, we return it. Otherwise, we'll have
* to find the socket name
*/
const ::KSocketAddress *KExtendedSocket::localAddress()
{
if (d->local != NULL)
return d->local;
if (d->status < bound)
return NULL;
return d->local = localAddress(sockfd);
}
/*
* Same thing, but for peer address. Which means this does not work on
* passiveSocket and that we require to be connected already. Also note that
* the behavior on connectionless sockets is not defined here.
*/
const ::KSocketAddress* KExtendedSocket::peerAddress()
{
if (d->peer != NULL)
return d->peer;
if (d->flags & passiveSocket || d->status < connected)
return NULL;
return d->peer = peerAddress(sockfd);
}
/*
* Perform the lookup on the addresses given
*/
int KExtendedSocket::lookup()
{
if (startAsyncLookup() != 0)
return -1;
if (!d->resRemote.wait() || !d->resLocal.wait())
{
d->status = nothing;
return -1;
}
d->status = lookupDone;
if (d->resRemote.error() != KResolver::NoError)
return d->resRemote.error();
if (d->resLocal.error() != KResolver::NoError)
return d->resLocal.error();
return 0;
}
/*
* Performs an asynchronous lookup on the given address(es)
*/
int KExtendedSocket::startAsyncLookup()
{
cleanError();
if (d->status > lookupInProgress)
return -1;
if (d->status == lookupInProgress)
// already in progress
return 0;
/* check socket type flags */
int socktype, familyMask, flags;
if (!process_flags(d->flags, socktype, familyMask, flags))
return -2;
// perform the global lookup before
if (!d->resRemote.isRunning())
{
d->resRemote.setFlags(flags);
d->resRemote.setFamily(familyMask);
d->resRemote.setSocketType(socktype);
QObject::connect(&d->resRemote, SIGNAL(finished(KResolverResults)),
this, SLOT(dnsResultsReady()));
if (!d->resRemote.start())
{
setError(IO_LookupError, d->resRemote.error());
return d->resRemote.error();
}
}
if ((d->flags & passiveSocket) == 0 && !d->resLocal.isRunning())
{
/* keep flags, but make this passive */
flags |= KResolver::Passive;
d->resLocal.setFlags(flags);
d->resLocal.setFamily(familyMask);
d->resLocal.setSocketType(socktype);
QObject::connect(&d->resLocal, SIGNAL(finished(KResolverResults)),
this, SLOT(dnsResultsReady()));
if (!d->resLocal.start())
{
setError(IO_LookupError, d->resLocal.error());
return d->resLocal.error();
}
}
// if we are here, there were no errors
if (d->resRemote.isRunning() || d->resLocal.isRunning())
d->status = lookupInProgress; // only if there actually is a running lookup
else
{
d->status = lookupDone;
emit lookupFinished(d->resRemote.results().count() +
d->resLocal.results().count());
}
return 0;
}
void KExtendedSocket::cancelAsyncLookup()
{
cleanError();
if (d->status != lookupInProgress)
return; // what's to cancel?
d->status = nothing;
d->resLocal.cancel(false);
d->resRemote.cancel(false);
}
int KExtendedSocket::listen(int N)
{
cleanError();
if ((d->flags & passiveSocket) == 0 || d->status >= listening)
return -2;
if (d->status < lookupDone)
if (lookup() != 0)
return -2; // error!
if (d->resRemote.error())
return -2;
// doing the loop:
KResolverResults::const_iterator it;
KResolverResults res = d->resRemote.results();
for (it = res.begin(); it != res.end(); ++it)
{
//kdDebug(170) << "Trying to listen on " << (*it).address().toString() << endl;
sockfd = ::socket((*it).family(), (*it).socketType(), (*it).protocol());
if (sockfd == -1)
{
// socket failed creating
//kdDebug(170) << "Failed to create: " << perror << endl;
continue;
}
fcntl(sockfd, F_SETFD, FD_CLOEXEC);
if (d->addressReusable)
setAddressReusable(sockfd, true);
setIPv6Only(d->ipv6only);
cleanError();
if (KSocks::self()->bind(sockfd, (*it).address().address(), (*it).length()) == -1)
{
//kdDebug(170) << "Failed to bind: " << perror << endl;
::close(sockfd);
sockfd = -1;
continue;
}
// ok, socket has bound
// kdDebug(170) << "Socket bound: " << sockfd << endl;
d->status = bound;
break;
}
if (sockfd == -1)
{
setError(IO_ListenError, errno);
//kdDebug(170) << "Listen error - sockfd is -1 " << endl;
return -1;
}
d->status = bound;
setFlags(IO_Sequential | IO_Raw | IO_ReadWrite);
int retval = KSocks::self()->listen(sockfd, N);
if (retval == -1)
setError(IO_ListenError, errno);
else
{
d->status = listening;
d->qsnIn = new QSocketNotifier(sockfd, QSocketNotifier::Read);
QObject::connect(d->qsnIn, SIGNAL(activated(int)), this, SLOT(socketActivityRead()));
}
return retval == -1 ? -1 : 0;
}
int KExtendedSocket::accept(KExtendedSocket *&sock)
{
cleanError();
sock = NULL;
if ((d->flags & passiveSocket) == 0 || d->status >= accepting)
return -2;
if (d->status < listening)
if (listen() < 0)
return -2; // error!
// let's see
// if we have a timeout in place, we have to place this socket in non-blocking
// mode
bool block = blockingMode();
struct sockaddr sa;
ksocklen_t len = sizeof(sa);
sock = NULL;
if (d->timeout.tv_sec > 0 || d->timeout.tv_usec > 0)
{
fd_set set;
setBlockingMode(false); // turn on non-blocking
FD_ZERO(&set);
FD_SET(sockfd, &set);
//kdDebug(170).form("Accepting on %d with %d.%06d second timeout\n",
// sockfd, d->timeout.tv_sec, d->timeout.tv_usec);
// check if there is anything to accept now
int retval = KSocks::self()->select(sockfd + 1, &set, NULL, NULL, &d->timeout);
if (retval == -1)
{
setError(IO_UnspecifiedError, errno);
return -1; // system error
}
else if (retval == 0 || !FD_ISSET(sockfd, &set))
{
setError(IO_TimeOutError, 0);
return -3; // timeout
}
}
// it's common stuff here
int newfd = KSocks::self()->accept(sockfd, &sa, &len);
if (newfd == -1)
{
setError(IO_AcceptError, errno);
kdWarning(170) << "Error accepting on socket " << sockfd << ":"
<< perror << endl;
return -1;
}
fcntl(newfd, F_SETFD, FD_CLOEXEC);
//kdDebug(170).form("Socket %d accepted socket %d\n", sockfd, newfd);
setBlockingMode(block); // restore blocking mode
sock = new KExtendedSocket;
sock->d->status = connected;
sock->sockfd = newfd;
sock->setFlags(IO_Sequential | IO_Raw | IO_ReadWrite | IO_Open | IO_Async);
sock->setBufferSize(0, 0); // always unbuffered here. User can change that later
return 0;
}
/*
* tries to connect
*
* FIXME!
* This function is critical path. It has to be cleaned up and made faster
*/
int KExtendedSocket::connect()
{
cleanError();
if (d->flags & passiveSocket || d->status >= connected)
return -2;
if (d->status < lookupDone)
if (lookup() != 0)
return -2;
timeval end, now;
timeval timeout_copy = d->timeout;
// Ok, things are a little tricky here
// Let me explain
// getaddrinfo() will return several different families of sockets
// When we have to bind before we connect, we have to make sure we're binding
// and connecting to the same family, or things won't work
KResolverResults remote = d->resRemote.results(),
local = d->resLocal.results();
KResolverResults::const_iterator it, it2;
//kdDebug(170) << "Starting connect to " << host() << '|' << port()
// << ": have " << local.count() << " local entries and "
// << remote.count() << " remote" << endl;
int ret = -1;
for (it = remote.begin(), it2 = local.begin(); it != remote.end(); ++it)
{
bool doingtimeout = d->timeout.tv_sec > 0 || d->timeout.tv_usec > 0;
if (doingtimeout)
{
gettimeofday(&end, NULL);
end.tv_usec += d->timeout.tv_usec;
end.tv_sec += d->timeout.tv_sec;
if (end.tv_usec > 1000*1000)
{
end.tv_usec -= 1000*1000;
end.tv_sec++;
}
//kdDebug(170).form("Connection with timeout of %d.%06d seconds (ends in %d.%06d)\n",
// d->timeout.tv_sec, d->timeout.tv_usec, end.tv_sec, end.tv_usec);
}
//kdDebug(170) << "Trying to connect to " << (*it).address().toString() << endl;
if (it2 != local.end())
{
// //kdDebug(170) << "Searching bind socket for family " << p->ai_family << endl;
if ((*it).family() != (*it2).family())
// differing families, scan local for a matching family
for (it2 = local.begin(); it2 != local.end(); ++it2)
if ((*it).family() == (*it2).family())
break;
if ((*it).family() != (*it2).family())
{
// no matching families for this
//kdDebug(170) << "No matching family for bind socket\n";
it2 = local.begin();
continue;
}
//kdDebug(170) << "Binding on " << (*it2).address().toString() << " before connect" << endl;
errno = 0;
sockfd = ::socket((*it).family(), (*it).socketType(), (*it).protocol());
setError(IO_ConnectError, errno);
if (sockfd == -1)
continue; // cannot create this socket
fcntl(sockfd, F_SETFD, FD_CLOEXEC);
if (d->addressReusable)
setAddressReusable(sockfd, true);
setIPv6Only(d->ipv6only);
cleanError();
if (KSocks::self()->bind(sockfd, (*it2).address(), (*it2).length()))
{
//kdDebug(170) << "Bind failed: " << perror << endl;
::close(sockfd);
sockfd = -1;
continue;
}
}
else
{
// no need to bind, just create
sockfd = ::socket((*it).family(), (*it).socketType(), (*it).protocol());
if (sockfd == -1)
{
setError(IO_ConnectError, errno);
continue;
}
fcntl(sockfd, F_SETFD, FD_CLOEXEC);
if (d->addressReusable)
setAddressReusable(sockfd, true);
setIPv6Only(d->ipv6only);
cleanError();
}
// kdDebug(170) << "Socket " << sockfd << " created" << endl;
d->status = created;
// check if we have to do timeout
if (doingtimeout && KSocks::self()->hasWorkingAsyncConnect())
{
fd_set rd, wr;
setBlockingMode(false);
// now try and connect
if (KSocks::self()->connect(sockfd, (*it).address(), (*it).length()) == -1)
{
// this could be EWOULDBLOCK
if (errno != EWOULDBLOCK && errno != EINPROGRESS)
{
//kdDebug(170) << "Socket " << sockfd << " did not connect: " << perror << endl;
setError(IO_ConnectError, errno);
::close(sockfd);
sockfd = -1;
continue; // nope, another error
}
FD_ZERO(&rd);
FD_ZERO(&wr);
FD_SET(sockfd, &rd);
FD_SET(sockfd, &wr);
int retval = KSocks::self()->select(sockfd + 1, &rd, &wr, NULL, &d->timeout);
if (retval == -1)
{
setError(IO_FatalError, errno);
continue; // system error
}
else if (retval == 0)
{
::close(sockfd);
sockfd = -1;
// kdDebug(170) << "Time out while trying to connect to " <<
// (*it).address().toString() << endl;
setError(IO_TimeOutError, 0);
ret = -3; // time out
d->timeout.tv_usec += timeout_copy.tv_usec;
d->timeout.tv_sec += timeout_copy.tv_sec;
if (d->timeout.tv_usec < 0)
{
d->timeout.tv_usec += 1000*1000;
d->timeout.tv_sec--;
}
continue;
}
// adjust remaining time
gettimeofday(&now, NULL);
d->timeout.tv_sec = end.tv_sec - now.tv_sec;
d->timeout.tv_usec = end.tv_usec - now.tv_usec;
if (d->timeout.tv_usec < 0)
{
d->timeout.tv_usec += 1000*1000;
d->timeout.tv_sec--;
}
// kdDebug(170).form("Socket %d activity; %d.%06d seconds remaining\n",
// sockfd, d->timeout.tv_sec, d->timeout.tv_usec);
// this means that an event occurred in the socket
int errcode;
socklen_t len = sizeof(errcode);
retval = getsockopt(sockfd, SOL_SOCKET, SO_ERROR, (char*)&errcode,
&len);
if (retval == -1 || errcode != 0)
{
// socket did not connect
//kdDebug(170) << "Socket " << sockfd << " did not connect: "
// << strerror(errcode) << endl;
::close(sockfd);
sockfd = -1;
// this is HIGHLY UNLIKELY
if (d->timeout.tv_sec == 0 && d->timeout.tv_usec == 0)
{
d->status = lookupDone;
setError(IO_TimeOutError, 0);
return -3; // time out
}
setError(IO_ConnectError, errcode);
continue;
}
}
// getting here means it connected
// setBufferSize() takes care of creating the socket notifiers
setBlockingMode(true);
d->status = connected;
setFlags(IO_Sequential | IO_Raw | IO_ReadWrite | IO_Open | IO_Async);
setBufferSize(d->flags & inputBufferedSocket ? -1 : 0,
d->flags & outputBufferedSocket ? -1 : 0);
emit connectionSuccess();
// kdDebug(170) << "Socket " << sockfd << " connected\n";
return 0;
}
else
{
// without timeouts
if (KSocks::self()->connect(sockfd, (*it).address(), (*it).length()) == -1)
{
//kdDebug(170) << "Socket " << sockfd << " to " << (*it).address().toString()
// << " did not connect: " << perror << endl;
setError(IO_ConnectError, errno);
::close(sockfd);
sockfd = -1;
continue;
}
d->status = connected;
setFlags(IO_Sequential | IO_Raw | IO_ReadWrite | IO_Open | IO_Async);
setBufferSize(d->flags & inputBufferedSocket ? -1 : 0,
d->flags & outputBufferedSocket ? -1 : 0);
emit connectionSuccess();
// kdDebug(170) << "Socket " << sockfd << " connected\n";
return 0; // it connected
}
}
// getting here means no socket connected or stuff like that
emit connectionFailed(d->syserror);
//kdDebug(170) << "Failed to connect\n";
return ret;
}
int KExtendedSocket::startAsyncConnect()
{
cleanError();
// check status
if (d->status >= connected || d->flags & passiveSocket)
return -2;
if (d->status == connecting)
// already on async connect
return 0;
// check if we have to do lookup
// if we do, then we'll use asynchronous lookup and use
// signal lookupFinished to do connection
if (d->status < lookupDone)
{
QObject::connect(this, SIGNAL(lookupFinished(int)), this, SLOT(startAsyncConnectSlot()));
if (d->status < lookupInProgress)
return startAsyncLookup();
else
return 0; // we still have to wait
}
// here we have d->status >= lookupDone and <= connecting
// we can do our connection
d->status = connecting;
QGuardedPtr<QObject> p = this;
connectionEvent();
if (!p)
return -1; // We have been deleted.
if (d->status < connecting)
return -1;
return 0;
}
void KExtendedSocket::cancelAsyncConnect()
{
if (d->status != connecting)
return;
if (sockfd != -1)
{
// we have a waiting connection
if (d->qsnIn)
delete d->qsnIn;
if (d->qsnOut)
delete d->qsnOut;
d->qsnIn = d->qsnOut = NULL;
::close(sockfd);
sockfd = -1;
}
d->status = lookupDone;
}
bool KExtendedSocket::open(int mode)
{
if (mode != IO_Raw | IO_ReadWrite)
return false; // invalid open mode
if (d->flags & passiveSocket)
return listen() == 0;
else if (d->status < connecting)
return connect() == 0;
else
return false;
}
void KExtendedSocket::close()
{
if (sockfd == -1 || d->status >= closing)
return; // nothing to close
// LOCK BUFFER MUTEX
if (d->flags & outputBufferedSocket && writeBufferSize() > 0)
{
// write buffer not empty, go into closing state
d->status = closing;
if (d->qsnIn)
delete d->qsnIn;
d->qsnIn = NULL;
// we keep the outgoing socket notifier because we want
// to send data, but not receive
}
else
{
// nope, write buffer is empty
// we can close now
if (d->qsnIn)
delete d->qsnIn;
if (d->qsnOut)
delete d->qsnOut;
d->qsnIn = d->qsnOut = NULL;
::close(sockfd);
d->status = done;
emit closed(readBufferSize() != 0 ? availRead : 0);
}
// UNLOCK BUFFER MUTEX
}
void KExtendedSocket::closeNow()
{
if (d->status >= done)
return; // nothing to close
// close the socket
delete d->qsnIn;
delete d->qsnOut;
d->qsnIn = d->qsnOut = NULL;
if (d->status > connecting && sockfd != -1)
{
::close(sockfd);
sockfd = -1;
}
else if (d->status == connecting)
cancelAsyncConnect();
else if (d->status == lookupInProgress)
cancelAsyncLookup();
d->status = done;
emit closed(closedNow |
(readBufferSize() != 0 ? availRead : 0) |
(writeBufferSize() != 0 ? dirtyWrite : 0));
}
void KExtendedSocket::release()
{
// release our hold on the socket
sockfd = -1;
d->status = done;
d->resRemote.cancel(false);
d->resLocal.cancel(false);
if (d->local != NULL)
delete d->local;
if (d->peer != NULL)
delete d->peer;
d->peer = d->local = NULL;
if (d->qsnIn != NULL)
delete d->qsnIn;
if (d->qsnOut != NULL)
delete d->qsnOut;
d->qsnIn = d->qsnOut = NULL;
// now that the socket notificators are done with, we can flush out the buffers
consumeReadBuffer(readBufferSize(), NULL, true);
consumeWriteBuffer(writeBufferSize());
// don't delete d
// leave that for the destructor
}
void KExtendedSocket::flush()
{
cleanError();
if (d->status < connected || d->status >= done || d->flags & passiveSocket)
return;
if (sockfd == -1)
return;
if ((d->flags & outputBufferedSocket) == 0)
return; // nothing to do
// LOCK MUTEX
unsigned written = 0;
unsigned offset = outBufIndex; // this happens only for the first
while (writeBufferSize() - written > 0)
{
// we have to write each output buffer in outBuf
// but since we can have several very small buffers, we can make things
// better by concatenating a few of them into a big buffer
// question is: how big should that buffer be? 16 kB should be enough
QByteArray buf(16384);
QByteArray *a = outBuf.first();
unsigned count = 0;
while (a && count + (a->size() - offset) <= buf.size())
{
memcpy(buf.data() + count, a->data() + offset, a->size() - offset);
count += a->size() - offset;
offset = 0;
a = outBuf.next();
}
// see if we can still fit more
if (a && count < buf.size())
{
// getting here means this buffer (a) is larger than
// (buf.size() - count) (even for count == 0).
memcpy(buf.data() + count, a->data() + offset, buf.size() - count);
offset += buf.size() - count;
count = buf.size();
}
// now try to write those bytes
int wrote = KSocks::self()->write(sockfd, buf, count);
if (wrote == -1)
{
// could be EAGAIN (EWOULDBLOCK)
setError(IO_WriteError, errno);
break;
}
written += wrote;
if ((unsigned)wrote != count)
break;
}
if (written)
{
consumeWriteBuffer(written);
emit bytesWritten(written);
}
// UNLOCK MUTEX
}
Q_LONG KExtendedSocket::readBlock(char *data, Q_ULONG maxlen)
{
cleanError();
if (d->status < connected || d->flags & passiveSocket)
return -2;
int retval;
if ((d->flags & inputBufferedSocket) == 0)
{
// we aren't buffering this socket, so just pass along
// the call to the real read method
if (sockfd == -1)
return -2;
if (data)
retval = KSocks::self()->read(sockfd, data, maxlen);
else
retval = skipData(sockfd, maxlen);
if (retval == -1)
setError(IO_ReadError, errno);
}
else
{
// this socket is being buffered. So read from the buffer
// LOCK BUFFER MUTEX
retval = consumeReadBuffer(maxlen, data);
if (retval == 0)
{
// consumeReadBuffer returns 0 only if the buffer is
// empty
if (sockfd == -1)
return 0; // buffer is clear now, indicate EOF
setError(IO_ReadError, EWOULDBLOCK);
retval = -1;
}
// UNLOCK BUFFER MUTEX
}
return retval;
}
Q_LONG KExtendedSocket::writeBlock(const char *data, Q_ULONG len)
{
cleanError();
if (d->status < connected || d->status >= closing || d->flags & passiveSocket)
return -2;
if (sockfd == -1)
return -2;
if (len == 0)
return 0; // what's to write?
int retval;
if ((d->flags & outputBufferedSocket) == 0)
{
// socket not buffered. Just call write
retval = KSocks::self()->write(sockfd, data, len);
if (retval == -1)
setError(IO_WriteError, errno);
else
emit bytesWritten(retval);
}
else
{
// socket is buffered. Feed the write buffer
// LOCK BUFFER MUTEX
register unsigned wsize = writeBufferSize();
if (d->outMaxSize == (int)wsize) // (int) to get rid of annoying warning
{
// buffer is full!
setError(IO_WriteError, EWOULDBLOCK);
retval = -1;
}
else
{
if (d->outMaxSize != -1 && wsize + len > (unsigned)d->outMaxSize)
// we cannot write all data. Write just as much as to fill the buffer
len = d->outMaxSize - wsize;
// len > 0 here
retval = feedWriteBuffer(len, data);
if (wsize == 0 || d->emitWrite)
// buffer was empty, which means that the notifier is probably disabled
d->qsnOut->setEnabled(true);
}
// UNLOCK BUFFER MUTEX
}
return retval;
}
int KExtendedSocket::peekBlock(char *data, uint maxlen)
{
if (d->status < connected || d->flags & passiveSocket)
return -2;
if (sockfd == -1)
return -2;
// need to LOCK MUTEX around this call...
if (d->flags & inputBufferedSocket)
return consumeReadBuffer(maxlen, data, false);
return 0;
}
int KExtendedSocket::unreadBlock(const char *, uint)
{
// Always return -1, indicating this is not supported
setError(IO_ReadError, ENOSYS);
return -1;
}
int KExtendedSocket::bytesAvailable() const
{
if (d->status < connected || d->flags & passiveSocket)
return -2;
// as of now, we don't do any extra processing
// we only work in input-buffered sockets
if (d->flags & inputBufferedSocket)
return KBufferedIO::bytesAvailable();
return 0; // TODO: FIONREAD ioctl
}
int KExtendedSocket::waitForMore(int msecs)
{
cleanError();
if (d->flags & passiveSocket || d->status < connected || d->status >= closing)
return -2;
if (sockfd == -1)
return -2;
fd_set rd;
FD_ZERO(&rd);
FD_SET(sockfd, &rd);
timeval tv;
tv.tv_sec = msecs / 1000;
tv.tv_usec = (msecs % 1000) * 1000;
int retval = KSocks::self()->select(sockfd + 1, &rd, NULL, NULL, &tv);
if (retval == -1)
{
setError(IO_FatalError, errno);
return -1;
}
else if (retval != 0)
socketActivityRead(); // do read processing
return bytesAvailable();
}
int KExtendedSocket::getch()
{
unsigned char c;
int retval;
retval = readBlock((char*)&c, sizeof(c));
if (retval < 0)
return retval;
return c;
}
int KExtendedSocket::putch(int ch)
{
unsigned char c = (char)ch;
return writeBlock((char*)&c, sizeof(c));
}
// sets the emission of the readyRead signal
void KExtendedSocket::enableRead(bool enable)
{
// check if we can disable the socket notifier
// saves us a few cycles
// this is so because in buffering mode, we rely on these signals
// being emitted to do our I/O. We couldn't disable them here
if (!enable && (d->flags & inputBufferedSocket) == 0 && d->qsnIn)
d->qsnIn->setEnabled(false);
else if (enable && d->qsnIn)
// we can enable it always
d->qsnIn->setEnabled(true);
d->emitRead = enable;
}
// sets the emission of the readyWrite signal
void KExtendedSocket::enableWrite(bool enable)
{
// same thing as above
if (!enable && (d->flags & outputBufferedSocket) == 0 && d->qsnOut)
d->qsnOut->setEnabled(false);
else if (enable && d->qsnOut)
// we can enable it always
d->qsnOut->setEnabled(true);
d->emitWrite = enable;
}
// protected slot
// this is connected to d->qsnIn::activated(int)
void KExtendedSocket::socketActivityRead()
{
if (d->flags & passiveSocket)
{
emit readyAccept();
return;
}
if (d->status == connecting)
{
connectionEvent();
return;
}
if (d->status != connected)
return;
// do we need to do I/O here?
if (d->flags & inputBufferedSocket)
{
// aye. Do read from the socket and feed our buffer
QByteArray a;
char buf[1024];
int len, totalread = 0;
// LOCK MUTEX
unsigned cursize = readBufferSize();
if (d->inMaxSize == -1 || cursize < (unsigned)d->inMaxSize)
{
do
{
// check that we can read that many bytes
if (d->inMaxSize != -1 && d->inMaxSize - (cursize + totalread) < sizeof(buf))
// no, that would overrun the buffer
// note that this will also make us exit the loop
len = d->inMaxSize - (cursize + totalread);
else
len = sizeof(buf);
len = KSocks::self()->read(sockfd, buf, len);
if (len > 0)
{
// normal read operation
a.resize(a.size() + len);
memcpy(a.data() + totalread, buf, len);
totalread += len; // totalread == a.size() now
}
else if (len == 0)
{
// EOF condition here
::close(sockfd);
sockfd = -1; // we're closed
d->qsnIn->deleteLater();
delete d->qsnOut;
d->qsnIn = d->qsnOut = NULL;
d->status = done;
emit closed(involuntary |
(readBufferSize() ? availRead : 0) |
(writeBufferSize() ? dirtyWrite : 0));
return;
}
else
{
// error!
setError(IO_ReadError, errno);
return;
}
// will loop only for normal read operations
}
while (len == sizeof(buf));
feedReadBuffer(a.size(), a.data());
}
// UNLOCK MUTEX
}
else
{
// No input buffering, but the notifier fired
// That means that either there is data to be read or that the
// socket closed.
// try to read one byte. If we can't, then the socket got closed
char c;
int len = KSocks::self()->recv(sockfd, &c, sizeof(c), MSG_PEEK);
if (len == 0)
{
// yes, it's an EOF condition
d->qsnIn->setEnabled(false);
::close(sockfd);
sockfd = -1;
d->status = done;
emit closed(involuntary);
return;
}
}
if (d->emitRead)
emit readyRead();
}
void KExtendedSocket::socketActivityWrite()
{
if (d->flags & passiveSocket)
return;
if (d->status == connecting)
{
connectionEvent();
return;
}
if (d->status != connected && d->status != closing)
return;
flush();
bool empty = writeBufferSize() == 0;
if (d->emitWrite && empty)
emit readyWrite();
else if (!d->emitWrite)
{
// check if we can disable the notifier
d->qsnOut->setEnabled(!empty); // leave it enabled only if we have more data to send
}
if (d->status == closing && empty)
{
// done sending the missing data!
d->status = done;
delete d->qsnOut;
::close(sockfd);
d->qsnOut = NULL;
sockfd = -1;
emit closed(delayed | (readBufferSize() ? availRead : 0));
}
}
// this function is called whenever we have a "connection event"
// that is, whenever our asynchronously connecting socket throws
// an event
void KExtendedSocket::connectionEvent()
{
if (d->status != connecting)
return; // move along. There's nothing to see here
KResolverResults remote = d->resRemote.results();
if (remote.count() == 0)
{
// We have a problem! Abort?
kdError(170) << "KExtendedSocket::connectionEvent() called but no data available!\n";
return;
}
int errcode = 0;
if (sockfd != -1)
{
// our socket has activity
// find out what it was
int retval;
socklen_t len = sizeof(errcode);
retval = getsockopt(sockfd, SOL_SOCKET, SO_ERROR, (char*)&errcode, &len);
if (retval == -1 || errcode != 0)
{
// socket activity and there was error?
// that means the socket probably did not connect
if (d->qsnIn)
delete d->qsnIn;
if (d->qsnOut)
delete d->qsnOut;
::close(sockfd);
sockfd = -1;
d->qsnIn = d->qsnOut = NULL;
d->current++;
setError(IO_ConnectError, errcode);
}
else
{
// hmm, socket activity and there was no error?
// that means it connected
// YAY!
cleanError();
d->status = connected;
setBlockingMode(true);
setFlags(IO_Sequential | IO_Raw | IO_ReadWrite | IO_Open | IO_Async);
setBufferSize(d->flags & inputBufferedSocket ? -1 : 0,
d->flags & outputBufferedSocket ? -1 : 0);
emit connectionSuccess();
return;
}
}
// ok, we have to try something here
// and sockfd == -1
KResolverResults local = d->resLocal.results();
unsigned localidx = 0;
for ( ; d->current < remote.count(); d->current++)
{
// same code as in connect()
if (local.count() != 0)
{
// scan bindres for a local resuls family
for (localidx = 0; localidx < local.count(); localidx++)
if (remote[d->current].family() == local[localidx].family())
break;
if (remote[d->current].family() != local[localidx].family())
{
// no matching families for this
continue;
}
errno = 0;
sockfd = ::socket(remote[d->current].family(), remote[d->current].socketType(),
remote[d->current].protocol());
setError(IO_ConnectError, errno);
errcode = errno;
if (sockfd == -1)
continue; // cannot create this socket
fcntl(sockfd, F_SETFD, FD_CLOEXEC);
if (d->addressReusable)
setAddressReusable(sockfd, true);
setIPv6Only(d->ipv6only);
cleanError();
if (KSocks::self()->bind(sockfd, local[localidx].address(),
local[localidx].length()) == -1)
{
::close(sockfd);
sockfd = -1;
continue;
}
}
else
{
// no need to bind, just create
sockfd = ::socket(remote[d->current].family(), remote[d->current].socketType(),
remote[d->current].protocol());
if (sockfd == -1)
{
setError(IO_ConnectError, errno);
errcode = errno;
continue;
}
fcntl(sockfd, F_SETFD, FD_CLOEXEC);
if (d->addressReusable)
setAddressReusable(sockfd, true);
setIPv6Only(d->ipv6only);
cleanError();
}
if (KSocks::self()->hasWorkingAsyncConnect())
setBlockingMode(false);
if (KSocks::self()->connect(sockfd, remote[d->current].address(),
remote[d->current].length()) == -1)
{
if (errno != EWOULDBLOCK && errno != EINPROGRESS)
{
setError(IO_ConnectError, errno);
::close(sockfd);
sockfd = -1;
errcode = errno;
continue;
}
// error here is either EWOULDBLOCK or EINPROGRESS
// so, it is a good condition
d->qsnIn = new QSocketNotifier(sockfd, QSocketNotifier::Read);
QObject::connect(d->qsnIn, SIGNAL(activated(int)), this, SLOT(socketActivityRead()));
d->qsnOut = new QSocketNotifier(sockfd, QSocketNotifier::Write);
QObject::connect(d->qsnOut, SIGNAL(activated(int)), this, SLOT(socketActivityWrite()));
// ok, let the Qt event loop do the selecting for us
return;
}
// eh, what?
// the non-blocking socket returned valid connection?
// already?
// I suppose that could happen...
cleanError();
d->status = connected;
setBlockingMode(true);
setFlags(IO_Sequential | IO_Raw | IO_ReadWrite | IO_Open | IO_Async);
setBufferSize(d->flags & inputBufferedSocket ? -1 : 0,
d->flags & outputBufferedSocket ? -1 : 0);
emit connectionSuccess();
return;
}
// if we got here, it means that there are no more options to connect
d->status = lookupDone; // go back
emit connectionFailed(errcode);
}
void KExtendedSocket::dnsResultsReady()
{
// check that this function was called in a valid state
if (d->status != lookupInProgress)
return;
// valid state. Are results fully ready?
if (d->resRemote.isRunning() || d->resLocal.isRunning())
// no, still waiting for answer in one of the lookups
return;
// ok, we have all results
// count how many results we have
int n = d->resRemote.results().count() + d->resLocal.results().count();
if (n)
{
d->status = lookupDone;
cleanError();
}
else
{
d->status = nothing;
setError(IO_LookupError, KResolver::NoName);
}
emit lookupFinished(n);
return;
}
void KExtendedSocket::startAsyncConnectSlot()
{
QObject::disconnect(this, SIGNAL(lookupFinished(int)), this, SLOT(startAsyncConnectSlot()));
if (d->status == lookupDone)
startAsyncConnect();
}
int KExtendedSocket::resolve(sockaddr *sock, ksocklen_t len, QString &host,
QString &port, int flags)
{
kdDebug(170) << "Deprecated function called:" << k_funcinfo << endl;
int err;
char h[NI_MAXHOST], s[NI_MAXSERV];
h[0] = s[0] = '\0';
err = getnameinfo(sock, len, h, sizeof(h) - 1, s, sizeof(s) - 1, flags);
host = QString::fromUtf8(h);
port = QString::fromUtf8(s);
return err;
}
int KExtendedSocket::resolve(::KSocketAddress *sock, QString &host, QString &port,
int flags)
{
return resolve(sock->data, sock->datasize, host, port, flags);
}
QPtrList<KAddressInfo> KExtendedSocket::lookup(const QString& host, const QString& port,
int userflags, int *error)
{
kdDebug(170) << "Deprecated function called:" << k_funcinfo << endl;
int socktype, familyMask, flags;
unsigned i;
QPtrList<KAddressInfo> l;
/* check socket type flags */
if (!process_flags(userflags, socktype, familyMask, flags))
return l;
// kdDebug(170) << "Performing lookup on " << host << "|" << port << endl;
KResolverResults res = KResolver::resolve(host, port, flags, familyMask);
if (res.error())
{
if (error)
*error = res.error();
return l;
}
for (i = 0; i < res.count(); i++)
{
KAddressInfo *ai = new KAddressInfo();
// I should have known that using addrinfo was going to come
// and bite me back some day...
ai->ai = (addrinfo *) malloc(sizeof(addrinfo));
memset(ai->ai, 0, sizeof(addrinfo));
ai->ai->ai_family = res[i].family();
ai->ai->ai_socktype = res[i].socketType();
ai->ai->ai_protocol = res[i].protocol();
QString canon = res[i].canonicalName();
if (!canon.isEmpty())
{
ai->ai->ai_canonname = (char *) malloc(canon.length()+1);
strcpy(ai->ai->ai_canonname, canon.ascii()); // ASCII here is intentional
}
if ((ai->ai->ai_addrlen = res[i].length()))
{
ai->ai->ai_addr = (struct sockaddr *) malloc(res[i].length());
memcpy(ai->ai->ai_addr, res[i].address().address(), res[i].length());
}
else
{
ai->ai->ai_addr = 0;
}
ai->addr = ::KSocketAddress::newAddress(ai->ai->ai_addr, ai->ai->ai_addrlen);
l.append(ai);
}
if ( error )
*error = 0; // all is fine!
return l;
}
::KSocketAddress *KExtendedSocket::localAddress(int fd)
{
::KSocketAddress *local;
struct sockaddr static_sa, *sa = &static_sa;
ksocklen_t len = sizeof(static_sa);
/* find out the socket length, in advance
* we use a sockaddr allocated on the heap just not to pass down
* a NULL pointer to the first call. Some systems are reported to
* set len to 0 if we pass NULL as the sockaddr */
if (KSocks::self()->getsockname(fd, sa, &len) == -1)
return NULL; // error!
/* was it enough? */
if (len > sizeof(static_sa)
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
|| sa->sa_len > sizeof(static_sa)
#endif
)
{
/* nope, malloc a new socket with the proper size */
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
if (sa->sa_len != len)
len = sa->sa_len;
#endif
sa = (sockaddr*)malloc(len);
if (sa == NULL)
return NULL; // out of memory
if (KSocks::self()->getsockname(fd, sa, &len) == -1)
{
free(sa);
return NULL;
}
local = ::KSocketAddress::newAddress(sa, len);
free(sa);
}
else
local = ::KSocketAddress::newAddress(sa, len);
return local;
}
/* This is exactly the same code as localAddress, except
* we call getpeername here */
::KSocketAddress *KExtendedSocket::peerAddress(int fd)
{
::KSocketAddress *peer;
struct sockaddr static_sa, *sa = &static_sa;
ksocklen_t len = sizeof(static_sa);
/* find out the socket length, in advance
* we use a sockaddr allocated on the heap just not to pass down
* a NULL pointer to the first call. Some systems are reported to
* set len to 0 if we pass NULL as the sockaddr */
if (KSocks::self()->getpeername(fd, sa, &len) == -1)
return NULL; // error!
/* was it enough? */
if (len > sizeof(static_sa)
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
|| sa->sa_len > sizeof(static_sa)
#endif
)
{
/* nope, malloc a new socket with the proper size */
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
if (sa->sa_len != len)
len = sa->sa_len;
#endif
sa = (sockaddr*)malloc(len);
if (sa == NULL)
return NULL; // out of memory
if (KSocks::self()->getpeername(fd, sa, &len) == -1)
{
free(sa);
return NULL;
}
peer = ::KSocketAddress::newAddress(sa, len);
free(sa);
}
else
peer = ::KSocketAddress::newAddress(sa, len);
return peer;
}
QString KExtendedSocket::strError(int code, int syserr)
{
const char * msg;
if (code == IO_LookupError)
msg = gai_strerror(syserr);
else
msg = strerror(syserr);
return QString::fromLocal8Bit(msg);
}
QSocketNotifier *KExtendedSocket::readNotifier() { return d->qsnIn; }
QSocketNotifier *KExtendedSocket::writeNotifier() { return d->qsnOut; }
/*
* class KAddressInfo
*/
#if 0
KAddressInfo::KAddressInfo(addrinfo *p)
{
ai = (addrinfo *) malloc(sizeof(addrinfo));
memcpy(ai, p, sizeof(addrinfo));
ai->ai_next = NULL;
if (p->ai_canonname)
{
ai->ai_canonname = (char *) malloc(strlen(p->ai_canonname)+1);
strcpy(ai->ai_canonname, p->ai_canonname);
}
if (p->ai_addr && p->ai_addrlen)
{
ai->ai_addr = (struct sockaddr *) malloc(p->ai_addrlen);
memcpy(ai->ai_addr, p->ai_addr, p->ai_addrlen);
}
else
{
ai->ai_addr = 0;
ai->ai_addrlen = 0;
}
addr = ::KSocketAddress::newAddress(ai->ai_addr, ai->ai_addrlen);
}
#endif
KAddressInfo::~KAddressInfo()
{
if (ai && ai->ai_canonname)
free(ai->ai_canonname);
if (ai && ai->ai_addr)
free(ai->ai_addr);
if (ai)
free(ai);
delete addr;
}
int KAddressInfo::flags() const
{
return ai->ai_flags;
}
int KAddressInfo::family() const
{
return ai->ai_family;
}
int KAddressInfo::socktype() const
{
return ai->ai_socktype;
}
int KAddressInfo::protocol() const
{
return ai->ai_protocol;
}
const char* KAddressInfo::canonname() const
{
return ai->ai_canonname;
}
void KExtendedSocket::virtual_hook( int id, void* data )
{ KBufferedIO::virtual_hook( id, data ); }
#include "kextsock.moc"
KExtendedSocket::unsetBindAddress
bool unsetBindAddress()
Unsets the bind address for the socket.
Definition: kextsock.cpp:419
KExtendedSocket::setSocketFlags
int setSocketFlags(int flags)
Sets the given flags.
Definition: kextsock.cpp:259
KSocks::listen
int listen(int s, int backlog)
This is the re-implementation of libc's function of the same name.
Definition: ksocks.cpp:580
KAsyncIO::readyWrite
void readyWrite()
This signal gets sent when the device is ready for writing.
KExtendedSocket::resolve
static int resolve(sockaddr *sock, ksocklen_t len, QString &host, QString &port, int flags=0) KDE_DEPRECATED
Performs resolution on the given socket address.
Definition: kextsock.cpp:1978
KExtendedSocket::enableRead
virtual void enableRead(bool enable)
Toggles the emission of the readyRead signal.
Definition: kextsock.cpp:1613
KExtendedSocket::release
virtual void release()
Releases the socket and anything we have holding on it.
Definition: kextsock.cpp:1334
KSocketAddress::newAddress
static KSocketAddress * newAddress(const struct sockaddr *sa, ksocklen_t size)
Creates a new KSocketAddress or descendant class from given raw socket address.
Definition: ksockaddr.cpp:123
KExtendedSocket::unreadBlock
virtual int unreadBlock(const char *data, uint len)
Reimplementation of unreadBlock() method.
Definition: kextsock.cpp:1548
KBufferedIO::readBufferSize
virtual unsigned readBufferSize() const
Returns the number of bytes in the read buffer.
Definition: kbufferedio.cpp:270
KBufferedIO::consumeReadBuffer
virtual unsigned consumeReadBuffer(unsigned nbytes, char *destbuffer, bool discard=true)
Consumes data from the input buffer.
Definition: kbufferedio.cpp:164
KExtendedSocket::closeNow
virtual void closeNow()
Closes the socket now, discarding the contents of the write buffer, if any.
Definition: kextsock.cpp:1307
KNetwork::KResolver
Name and service resolution class.
Definition: kresolver.h:295
KBufferedIO::feedReadBuffer
virtual unsigned feedReadBuffer(unsigned nbytes, const char *buffer, bool atBeginning=false)
Feeds data into the input buffer.
Definition: kbufferedio.cpp:243
KExtendedSocket::lookupFinished
void lookupFinished(int count)
This signal is emitted whenever an asynchronous lookup process is done.
KAddressInfo::socktype
int socktype() const KDE_DEPRECATED
Returns the socket type of the address info (see getaddrinfo(3)).
Definition: kextsock.cpp:2223
KExtendedSocket::flush
virtual void flush()
Flushes the socket buffer.
Definition: kextsock.cpp:1365
KNetwork::KSocketAddress
A generic socket address.
Definition: ksocketaddress.h:423
KBufferedIO::closed
void closed(int state)
This signal gets sent when the stream is closed.
KExtendedSocket::unsetBindPort
bool unsetBindPort()
Unsets the bind port/service.
Definition: kextsock.cpp:387
KNetwork::KResolverResults
Name and service resolution results.
Definition: kresolver.h:197
KExtendedSocket::setBindHost
bool setBindHost(const QString &host)
Sets the hostname to which we will bind locally before connecting.
Definition: kextsock.cpp:340
KExtendedSocket::setBindAddress
bool setBindAddress(const QString &host, int port)
Sets both host and port to which we will bind the socket.
Definition: kextsock.cpp:403
KExtendedSocket::setBlockingMode
bool setBlockingMode(bool enable)
Sets/unsets blocking mode for the socket.
Definition: kextsock.cpp:448
KExtendedSocket::writeBlock
virtual Q_LONG writeBlock(const char *data, Q_ULONG len)
Writes a block of data to the socket.
Definition: kextsock.cpp:1479
KBufferedIO::outBuf
QPtrList< QByteArray > outBuf
For an explanation on how this buffer work, please refer to the comments at the top of kbufferedio...
Definition: kbufferedio.h:218
KBufferedIO::feedWriteBuffer
virtual unsigned feedWriteBuffer(unsigned nbytes, const char *buffer)
Feeds data into the output buffer.
Definition: kbufferedio.cpp:259
KSocks::self
static KSocks * self()
Return an instance of class KSocks *.
Definition: ksocks.cpp:212
KExtendedSocket::connectionFailed
void connectionFailed(int error)
This signal is emitted whenever our asynchronous connection attempt failed to all hosts listed...
KExtendedSocket::strError
static QString strError(int code, int syserr)
Returns the representing text of this error code.
Definition: kextsock.cpp:2156
KBufferedIO::bytesAvailable
virtual int bytesAvailable() const
Returns the number of bytes available for reading in the read buffer.
Definition: kbufferedio.cpp:114
KExtendedSocket::setBindPort
bool setBindPort(int port)
Sets the port/service to which we will bind before connecting.
Definition: kextsock.cpp:370
KExtendedSocket::setIPv6Only
bool setIPv6Only(bool enable)
Sets/unsets the v6-only flag for IPv6 sockets.
Definition: kextsock.cpp:554
KExtendedSocket::setBufferSize
virtual bool setBufferSize(int rsize, int wsize=-2)
Sets the buffer sizes for this socket.
Definition: kextsock.cpp:616
KExtendedSocket::unsetBindHost
bool unsetBindHost()
Unsets the bind hostname.
Definition: kextsock.cpp:353
KExtendedSocket::timeout
timeval timeout() const
Returns the timeout value for the connection.
Definition: kextsock.cpp:440
KAddressInfo
Definition: kextsock.h:1022
KExtendedSocket::accept
virtual int accept(KExtendedSocket *&sock)
Accepts an incoming connection from the socket.
Definition: kextsock.cpp:904
KAddressInfo::protocol
int protocol() const KDE_DEPRECATED
Returns the protocol of the address info (see getaddrinfo(3)).
Definition: kextsock.cpp:2228
KExtendedSocket::bytesAvailable
virtual int bytesAvailable() const
Returns the number of available bytes yet to be read via readBlock and family of functions.
Definition: kextsock.cpp:1555
KExtendedSocket::setHost
bool setHost(const QString &host)
Sets the hostname to the given value.
Definition: kextsock.cpp:276
KExtendedSocket::setPort
bool setPort(int port)
Sets the port/service.
Definition: kextsock.cpp:297
KBufferedIO::consumeWriteBuffer
virtual void consumeWriteBuffer(unsigned nbytes)
Consumes data from the output buffer.
Definition: kbufferedio.cpp:214
KExtendedSocket::waitForMore
virtual int waitForMore(int msec)
Waits msec milliseconds for more data to be available (use 0 to wait forever).
Definition: kextsock.cpp:1568
KExtendedSocket::connect
virtual int connect()
Attempts to connect to the remote host.
Definition: kextsock.cpp:978
KExtendedSocket::cancelAsyncConnect
virtual void cancelAsyncConnect()
Cancels any on-going asynchronous connection attempt.
Definition: kextsock.cpp:1240
KExtendedSocket::systemError
int systemError() const
Returns the related system error code Except for IO_LookupError errors, these are codes found in errn...
Definition: kextsock.cpp:250
KExtendedSocket::peekBlock
virtual int peekBlock(char *data, uint maxlen)
Peeks at a block of data from the socket.
Definition: kextsock.cpp:1533
KExtendedSocket::localAddress
const ::KSocketAddress * localAddress()
Returns the local socket address.
Definition: kextsock.cpp:716
KExtendedSocket::bindPort
QString bindPort() const
Returns the service to which the socket will be/is bound.
Definition: kextsock.cpp:395
KExtendedSocket::readBlock
virtual Q_LONG readBlock(char *data, Q_ULONG maxlen)
Reads a block of data from the socket.
Definition: kextsock.cpp:1434
KExtendedSocket::KExtendedSocket
KExtendedSocket()
Creates an empty KExtendedSocket.
Definition: kextsock.cpp:186
KExtendedSocket::putch
virtual int putch(int ch)
Writes a single character (unsigned char) to the stream.
Definition: kextsock.cpp:1606
KExtendedSocket::bindHost
QString bindHost() const
Returns the hostname to which the socket will be/is bound.
Definition: kextsock.cpp:361
KSocks::accept
int accept(int s, sockaddr *addr, ksocklen_t *addrlen)
This is the re-implementation of libc's function of the same name.
Definition: ksocks.cpp:560
KAddressInfo::family
int family() const KDE_DEPRECATED
Returns the family of the address info (see getaddrinfo(3)).
Definition: kextsock.cpp:2218
KSocks::getsockname
int getsockname(int s, sockaddr *name, ksocklen_t *namelen)
This is the re-implementation of libc's function of the same name.
Definition: ksocks.cpp:536
KExtendedSocket::lookup
virtual int lookup()
Performs lookup on the addresses we were given before.
Definition: kextsock.cpp:744
KExtendedSocket::isIPv6Only
bool isIPv6Only()
Returns the status of the v6-only flag for IPv6 sockets.
Definition: kextsock.cpp:586
KExtendedSocket::peerAddress
const ::KSocketAddress * peerAddress()
Returns the peer socket address.
Definition: kextsock.cpp:731
KExtendedSocket::host
QString host() const
Returns the hostname.
Definition: kextsock.cpp:288
KExtendedSocket::enableWrite
virtual void enableWrite(bool enable)
Toggles the emission of the readyWrite signal.
Definition: kextsock.cpp:1628
KExtendedSocket::reset
void reset()
Resets the socket, disconnecting if still connected and freeing any related resources still being kep...
Definition: kextsock.cpp:225
KSocks::select
int select(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout)
This is the re-implementation of libc's function of the same name.
Definition: ksocks.cpp:572
KExtendedSocket::setTimeout
bool setTimeout(int secs, int usecs=0)
Sets the timeout value for the connection (if this is not passiveSocket) or acception (if it is)...
Definition: kextsock.cpp:427
KBufferedIO::bytesWritten
void bytesWritten(int nbytes)
This signal gets sent whenever bytes are written from the buffer.
KExtendedSocket::addressReusable
bool addressReusable()
Returns whether this socket's address can be reused.
Definition: kextsock.cpp:531
KExtendedSocket::socketFlags
int socketFlags() const
Returns the current flags.
Definition: kextsock.cpp:267
KExtendedSocket::close
virtual void close()
Closes the socket.
Definition: kextsock.cpp:1273
KAsyncIO::readyRead
void readyRead()
This signal gets sent when the device is ready for reading.
KBufferedIO::outBufIndex
unsigned outBufIndex
Offset into first output buffer.
Definition: kbufferedio.h:220
KExtendedSocket::startAsyncConnect
virtual int startAsyncConnect()
Starts an asynchronous connect.
Definition: kextsock.cpp:1205
KSocks::getpeername
int getpeername(int s, sockaddr *name, ksocklen_t *namelen)
This is the re-implementation of libc's function of the same name.
Definition: ksocks.cpp:548
KExtendedSocket::blockingMode
bool blockingMode()
Returns the current blocking mode for this socket.
Definition: kextsock.cpp:477
KExtendedSocket::cancelAsyncLookup
virtual void cancelAsyncLookup()
Cancels any on-going asynchronous lookups.
Definition: kextsock.cpp:825
KExtendedSocket
The extended socket class.
Definition: kextsock.h:91
KExtendedSocket::socketStatus
int socketStatus() const
Returns the class status.
Definition: kextsock.cpp:234
KExtendedSocket::setError
void setError(int errorkind, int error)
Sets the error code.
Definition: kextsock.cpp:244
KExtendedSocket::setAddress
bool setAddress(const QString &host, int port)
Sets the address where we will connect to.
Definition: kextsock.cpp:322
KSocks::read
signed long int read(int fd, void *buf, unsigned long int count)
This is the re-implementation of libc's function of the same name.
Definition: ksocks.cpp:487
KExtendedSocket::setAddressReusable
bool setAddressReusable(bool enable)
Sets/unsets address reusing flag for this socket.
Definition: kextsock.cpp:498
endl
kndbgstream & endl(kndbgstream &s)
Does nothing.
Definition: kdebug.h:583
KBufferedIO::writeBufferSize
virtual unsigned writeBufferSize() const
Returns the number of bytes in the write buffer.
Definition: kbufferedio.cpp:283
KAddressInfo::flags
int flags() const KDE_DEPRECATED
Returns the flags of the address info (see getaddrinfo(3)).
Definition: kextsock.cpp:2213
KExtendedSocket::listen
virtual int listen(int N=5)
Place the socket in listen mode.
Definition: kextsock.cpp:836
KExtendedSocket::getch
virtual int getch()
Gets a single character (unsigned char) from the stream.
Definition: kextsock.cpp:1595
KExtendedSocket::connectionSuccess
void connectionSuccess()
This signal is emitted whenever we connected asynchronously to a host.
KExtendedSocket::setSocketStatus
void setSocketStatus(int status)
Sets the socket status.
Definition: kextsock.cpp:239
KNetwork::KResolverResults::error
int error() const
Retrieves the error code associated with this resolution.
Definition: kresolver.cpp:243
KAddressInfo::canonname
const char * canonname() const KDE_DEPRECATED
Returns the official name of the host (see getaddrinfo(3)).
Definition: kextsock.cpp:2233
KSocks::write
signed long int write(int fd, const void *buf, unsigned long int count)
This is the re-implementation of libc's function of the same name.
Definition: ksocks.cpp:494
KSocks::recv
int recv(int s, void *buf, unsigned long int len, int flags)
This is the re-implementation of libc's function of the same name.
Definition: ksocks.cpp:522
KExtendedSocket::port
QString port() const
Returns the port/service.
Definition: kextsock.cpp:314
KExtendedSocket::open
virtual bool open(int mode=IO_Raw|IO_ReadWrite)
Implementation of QIODevice::open() pure virtual function.
Definition: kextsock.cpp:1260
KExtendedSocket::readyAccept
void readyAccept()
This signal is emitted whenever this socket is ready to accept another socket.
KExtendedSocket::~KExtendedSocket
virtual ~KExtendedSocket()
Destroys the socket, disconnecting if still connected and freeing any related resources still being k...
Definition: kextsock.cpp:208
KExtendedSocket::startAsyncLookup
virtual int startAsyncLookup()
Starts an asynchronous lookup for the addresses given.
Definition: kextsock.cpp:766

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