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2252 lines
53 KiB
2252 lines
53 KiB
/*
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* This file is part of the KDE libraries
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* Copyright (C) 2000-2004 Thiago Macieira <thiago.macieira@kdemail.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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**/
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#include <config.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/times.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <sys/un.h>
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#include <stdio.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <netdb.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <tqglobal.h>
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#include <tqstring.h>
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#include <tqiodevice.h>
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#include <tqsocketnotifier.h>
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#include <tqguardedptr.h>
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#include "kresolver.h"
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#include "kdebug.h"
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#include "kextsock.h"
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#include "ksockaddr.h"
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#include "ksocks.h"
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#ifdef __CYGWIN__
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#include "netsupp.h"
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#endif
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using namespace KNetwork;
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//
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// Internal class definitions
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//
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class KExtendedSocketPrivate
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{
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public:
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int flags; // socket flags
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int status; // status
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int syserror; // the system error value
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timeval timeout; // connection/acception timeout
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KResolver resRemote; // the resolved addresses
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KResolver resLocal; // binding resolution
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unsigned current; // used by the asynchronous connection
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::KSocketAddress *local; // local socket address
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::KSocketAddress *peer; // peer socket address
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TQSocketNotifier *qsnIn, *qsnOut;
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int inMaxSize, outMaxSize;
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bool emitRead : 1, emitWrite : 1;
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mutable bool addressReusable : 1, ipv6only : 1;
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KExtendedSocketPrivate() :
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flags(0), status(0), syserror(0),
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current(0), local(0), peer(0),
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qsnIn(0), qsnOut(0), inMaxSize(-1), outMaxSize(-1), emitRead(false), emitWrite(false),
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addressReusable(false), ipv6only(false)
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{
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timeout.tv_sec = timeout.tv_usec = 0;
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}
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};
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// translate KExtendedSocket flags into KResolver ones
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static bool process_flags(int flags, int& socktype, int& familyMask, int& outflags)
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{
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switch (flags & (KExtendedSocket::streamSocket | KExtendedSocket::datagramSocket | KExtendedSocket::rawSocket))
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{
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case 0:
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/* No flags given, use default */
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case KExtendedSocket::streamSocket:
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/* streaming socket requested */
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socktype = SOCK_STREAM;
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break;
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case KExtendedSocket::datagramSocket:
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/* datagram packet socket requested */
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socktype = SOCK_DGRAM;
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break;
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case KExtendedSocket::rawSocket:
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/* raw socket requested. I wouldn't do this if I were you... */
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socktype = SOCK_RAW;
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break;
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default:
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/* the flags were used in an invalid manner */
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return false;
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}
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if (flags & KExtendedSocket::knownSocket)
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{
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familyMask = 0;
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if ((flags & KExtendedSocket::unixSocket) == KExtendedSocket::unixSocket)
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familyMask |= KResolver::UnixFamily;
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switch ((flags & (KExtendedSocket::ipv6Socket|KExtendedSocket::ipv4Socket)))
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{
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case KExtendedSocket::ipv4Socket:
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familyMask |= KResolver::IPv4Family;
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break;
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case KExtendedSocket::ipv6Socket:
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familyMask |= KResolver::IPv6Family;
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break;
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case KExtendedSocket::inetSocket:
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familyMask |= KResolver::InternetFamily;
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break;
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}
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// those are all the families we know about
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}
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else
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familyMask = KResolver::KnownFamily;
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/* check other flags */
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outflags = (flags & KExtendedSocket::passiveSocket ? KResolver::Passive : 0) |
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(flags & KExtendedSocket::canonName ? KResolver::CanonName : 0) |
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(flags & KExtendedSocket::noResolve ? KResolver::NoResolve : 0);
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if (getenv("TDE_NO_IPV6"))
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familyMask &= ~KResolver::IPv6Family;
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return true;
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}
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// "skips" at most len bytes from file descriptor fd
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// that is, we will try and read that much data and discard
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// it. We will stop when we have read those or when the read
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// function returns error
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static int skipData(int fd, unsigned len)
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{
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char buf[1024];
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unsigned skipped = 0;
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while (len)
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{
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int count = sizeof(buf);
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if ((unsigned)count > len)
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count = len;
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count = KSocks::self()->read(fd, buf, count);
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if (count == -1)
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return -1;
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else
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{
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len -= count;
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skipped += count;
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}
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}
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return skipped;
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}
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/*
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* class KExtendedSocket
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*/
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// default constructor
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KExtendedSocket::KExtendedSocket() :
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sockfd(-1), d(new KExtendedSocketPrivate)
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{
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}
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// constructor with hostname
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KExtendedSocket::KExtendedSocket(const TQString& host, int port, int flags) :
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sockfd(-1), d(new KExtendedSocketPrivate)
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{
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setAddress(host, port);
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setSocketFlags(flags);
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}
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// same
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KExtendedSocket::KExtendedSocket(const TQString& host, const TQString& service, int flags) :
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sockfd(-1), d(new KExtendedSocketPrivate)
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{
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setAddress(host, service);
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setSocketFlags(flags);
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}
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// destroy the class
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KExtendedSocket::~KExtendedSocket()
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{
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closeNow();
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if (d->local != NULL)
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delete d->local;
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if (d->peer != NULL)
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delete d->peer;
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if (d->qsnIn != NULL)
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delete d->qsnIn;
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if (d->qsnOut != NULL)
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delete d->qsnOut;
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delete d;
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}
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#ifdef USE_QT3
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void KExtendedSocket::reset()
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#endif // USE_QT3
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#ifdef USE_QT4
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bool KExtendedSocket::reset()
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#endif // USE_QT4
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{
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closeNow();
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release();
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d->current = 0;
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d->status = nothing;
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d->syserror = 0;
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}
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int KExtendedSocket::socketStatus() const
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{
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return d->status;
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}
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void KExtendedSocket::setSocketStatus(int newstatus)
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{
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d->status = newstatus;
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}
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void KExtendedSocket::setError(int errorcode, int syserror)
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{
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setStatus(errorcode);
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d->syserror = syserror;
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}
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int KExtendedSocket::systemError() const
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{
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return d->syserror;
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}
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/*
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* Sets socket flags
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* This is only allowed if we are in nothing state
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*/
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int KExtendedSocket::setSocketFlags(int flags)
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{
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if (d->status > nothing)
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return -1; // error!
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return d->flags = flags;
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}
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int KExtendedSocket::socketFlags() const
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{
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return d->flags;
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}
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/*
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* Sets socket target hostname
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* This is only allowed if we are in nothing state
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*/
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bool KExtendedSocket::setHost(const TQString& host)
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{
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if (d->status > nothing)
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return false; // error!
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d->resRemote.setNodeName(host);
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return true;
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}
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/*
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* returns the hostname
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*/
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TQString KExtendedSocket::host() const
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{
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return d->resRemote.nodeName();
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}
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/*
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* Sets the socket target port/service
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* Same thing: only state 'nothing'
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*/
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bool KExtendedSocket::setPort(int port)
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{
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return setPort(TQString::number(port));
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}
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bool KExtendedSocket::setPort(const TQString& service)
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{
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if (d->status > nothing)
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return false; // error
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d->resRemote.setServiceName(service);
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return true;
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}
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/*
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* returns the service port number
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*/
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TQString KExtendedSocket::port() const
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{
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return d->resRemote.serviceName();
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}
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/*
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* sets the address
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*/
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bool KExtendedSocket::setAddress(const TQString& host, int port)
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{
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return setHost(host) && setPort(port);
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}
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/*
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* the same
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*/
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bool KExtendedSocket::setAddress(const TQString& host, const TQString& serv)
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{
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return setHost(host) && setPort(serv);
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}
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/*
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* Sets the bind hostname
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* This is only valid in the 'nothing' state and if this is not a
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* passiveSocket socket
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*/
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bool KExtendedSocket::setBindHost(const TQString& host)
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{
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if (d->status > nothing || d->flags & passiveSocket)
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return false; // error
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d->resLocal.setServiceName(host);
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return true;
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}
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/*
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* Unsets the bind hostname
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* same thing
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*/
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bool KExtendedSocket::unsetBindHost()
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{
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return setBindHost(TQString::null);
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}
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/*
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* returns the binding host
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*/
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TQString KExtendedSocket::bindHost() const
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{
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return d->resLocal.serviceName();
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}
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/*
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* Sets the bind port
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* Same condition as setBindHost
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*/
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bool KExtendedSocket::setBindPort(int port)
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{
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return setBindPort(TQString::number(port));
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}
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bool KExtendedSocket::setBindPort(const TQString& service)
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{
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if (d->status > nothing || d->flags & passiveSocket)
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return false; // error
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d->resLocal.setServiceName(service);
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return true;
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}
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/*
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* unsets the bind port
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*/
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bool KExtendedSocket::unsetBindPort()
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{
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return setBindPort(TQString::null);
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}
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/*
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* returns the binding port
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*/
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TQString KExtendedSocket::bindPort() const
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{
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return d->resLocal.serviceName();
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}
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/*
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* sets the binding address
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*/
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bool KExtendedSocket::setBindAddress(const TQString& host, int port)
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{
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return setBindHost(host) && setBindPort(port);
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}
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/*
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* same
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*/
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bool KExtendedSocket::setBindAddress(const TQString& host, const TQString& service)
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{
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return setBindHost(host) && setBindPort(service);
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}
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/*
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* unsets binding address
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*/
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bool KExtendedSocket::unsetBindAddress()
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{
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return unsetBindHost() && unsetBindPort();
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}
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/*
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* sets the timeout for the connection
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*/
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bool KExtendedSocket::setTimeout(int secs, int usecs)
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{
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if (d->status >= connected) // closed?
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return false;
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d->timeout.tv_sec = secs;
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d->timeout.tv_usec = usecs;
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return true;
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}
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/*
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* returns the timeout
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*/
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timeval KExtendedSocket::timeout() const
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{
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return d->timeout;
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}
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/*
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* Sets the blocking mode on this socket
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*/
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bool KExtendedSocket::setBlockingMode(bool enable)
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{
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cleanError();
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if (d->status < created)
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return false;
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if (sockfd == -1)
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return false; // error!
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int fdflags = fcntl(sockfd, F_GETFL, 0);
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if (fdflags == -1)
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return false; // error!
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if (!enable)
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fdflags |= O_NONBLOCK;
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else
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fdflags &= ~O_NONBLOCK;
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if (fcntl(sockfd, F_SETFL, fdflags) == -1)
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{
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setError(IO_UnspecifiedError, errno);
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return false;
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}
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return true;
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}
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/*
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* Returns the blocking mode on the socket
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*/
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bool KExtendedSocket::blockingMode()
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{
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cleanError();
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if (d->status < created)
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return false; // sockets not created are in blocking mode
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if (sockfd == -1)
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return false; // error
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int fdflags = fcntl(sockfd, F_GETFL, 0);
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if (fdflags == -1)
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{
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setError(IO_UnspecifiedError, errno);
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return false;
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}
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return (fdflags & O_NONBLOCK) == 0; // non-blocking == false
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}
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/*
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* Sets the reusability flag for this socket in the OS
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*/
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bool KExtendedSocket::setAddressReusable(bool enable)
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{
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cleanError();
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d->addressReusable = enable;
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if (d->status < created)
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return true;
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|
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if (sockfd == -1)
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return true;
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if (!setAddressReusable(sockfd, enable))
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{
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setError(IO_UnspecifiedError, errno);
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return false;
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}
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return true;
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}
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bool KExtendedSocket::setAddressReusable(int fd, bool enable)
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{
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if (fd == -1)
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return false;
|
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int on = enable; // just to be on the safe side
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|
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if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on)) == -1)
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return false;
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return true;
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}
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|
|
/*
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* Retrieves the reusability flag for this socket
|
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*/
|
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bool KExtendedSocket::addressReusable()
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{
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cleanError();
|
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if (d->status < created)
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return d->addressReusable;
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|
|
if (sockfd == -1)
|
|
return d->addressReusable;
|
|
|
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int on;
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socklen_t onsiz = sizeof(on);
|
|
if (getsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, &onsiz) == -1)
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{
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setError(IO_UnspecifiedError, errno);
|
|
return false;
|
|
}
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|
|
|
return on != 0;
|
|
}
|
|
|
|
/*
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|
* Set the IPV6_V6ONLY flag
|
|
*/
|
|
bool KExtendedSocket::setIPv6Only(bool enable)
|
|
{
|
|
#ifdef IPV6_V6ONLY
|
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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,
|
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(char *)&on, sizeof(on)) == -1)
|
|
{
|
|
setError(IO_UnspecifiedError, errno);
|
|
return false;
|
|
}
|
|
else
|
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return true;
|
|
|
|
#else
|
|
// we don't have the IPV6_V6ONLY constant in this system
|
|
d->ipv6only = enable;
|
|
|
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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 TQSocketNotifier(sockfd, TQSocketNotifier::Read);
|
|
TQObject::connect(d->qsnIn, TQT_SIGNAL(activated(int)), this, TQT_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 TQSocketNotifier(sockfd, TQSocketNotifier::Write);
|
|
TQObject::connect(d->qsnOut, TQT_SIGNAL(activated(int)), this, TQT_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 TQSocketNotifier(sockfd, TQSocketNotifier::Write);
|
|
TQObject::connect(d->qsnOut, TQT_SIGNAL(activated(int)), this, TQT_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);
|
|
TQObject::connect(&d->resRemote, TQT_SIGNAL(finished(KResolverResults)),
|
|
this, TQT_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);
|
|
TQObject::connect(&d->resLocal, TQT_SIGNAL(finished(KResolverResults)),
|
|
this, TQT_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 TQSocketNotifier(sockfd, TQSocketNotifier::Read);
|
|
TQObject::connect(d->qsnIn, TQT_SIGNAL(activated(int)), this, TQT_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)
|
|
{
|
|
TQObject::connect(this, TQT_SIGNAL(lookupFinished(int)), this, TQT_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;
|
|
TQGuardedPtr<TQObject> p = TQT_TQOBJECT(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(TQ_OpenMode 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
|
|
|
|
TQByteArray buf(16384);
|
|
TQByteArray *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
|
|
}
|
|
|
|
|
|
TQT_TQIO_LONG KExtendedSocket::tqreadBlock(char *data, TQT_TQIO_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;
|
|
}
|
|
|
|
TQT_TQIO_LONG KExtendedSocket::tqwriteBlock(const char *data, TQT_TQIO_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;
|
|
}
|
|
|
|
#ifdef USE_QT3
|
|
int KExtendedSocket::bytesAvailable() const
|
|
#endif // USE_QT3
|
|
#ifdef USE_QT4
|
|
qint64 KExtendedSocket::bytesAvailable() const
|
|
#endif // USE_QT4
|
|
{
|
|
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 = tqreadBlock((char*)&c, sizeof(c));
|
|
|
|
if (retval < 0)
|
|
return retval;
|
|
return c;
|
|
}
|
|
|
|
int KExtendedSocket::putch(int ch)
|
|
{
|
|
unsigned char c = (char)ch;
|
|
return tqwriteBlock((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
|
|
TQByteArray 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 TQSocketNotifier(sockfd, TQSocketNotifier::Read);
|
|
TQObject::connect(d->qsnIn, TQT_SIGNAL(activated(int)), this, TQT_SLOT(socketActivityRead()));
|
|
d->qsnOut = new TQSocketNotifier(sockfd, TQSocketNotifier::Write);
|
|
TQObject::connect(d->qsnOut, TQT_SIGNAL(activated(int)), this, TQT_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()
|
|
{
|
|
TQObject::disconnect(this, TQT_SIGNAL(lookupFinished(int)), this, TQT_SLOT(startAsyncConnectSlot()));
|
|
|
|
if (d->status == lookupDone)
|
|
startAsyncConnect();
|
|
}
|
|
|
|
int KExtendedSocket::resolve(sockaddr *sock, ksocklen_t len, TQString &host,
|
|
TQString &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 = TQString::fromUtf8(h);
|
|
port = TQString::fromUtf8(s);
|
|
|
|
return err;
|
|
}
|
|
|
|
int KExtendedSocket::resolve(::KSocketAddress *sock, TQString &host, TQString &port,
|
|
int flags)
|
|
{
|
|
return resolve(sock->data, sock->datasize, host, port, flags);
|
|
}
|
|
|
|
TQPtrList<KAddressInfo> KExtendedSocket::lookup(const TQString& host, const TQString& port,
|
|
int userflags, int *error)
|
|
{
|
|
kdDebug(170) << "Deprecated function called:" << k_funcinfo << endl;
|
|
|
|
int socktype, familyMask, flags;
|
|
unsigned i;
|
|
TQPtrList<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();
|
|
TQString 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;
|
|
}
|
|
|
|
TQString KExtendedSocket::strError(int code, int syserr)
|
|
{
|
|
const char * msg;
|
|
if (code == IO_LookupError)
|
|
msg = gai_strerror(syserr);
|
|
else
|
|
msg = strerror(syserr);
|
|
|
|
return TQString::fromLocal8Bit(msg);
|
|
}
|
|
|
|
|
|
TQSocketNotifier *KExtendedSocket::readNotifier() { return d->qsnIn; }
|
|
TQSocketNotifier *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"
|