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771 lines
18 KiB
771 lines
18 KiB
/*
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* filetransfer.cpp - File Transfer
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* Copyright (C) 2004 Justin Karneges
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include"filetransfer.h"
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#include<qtimer.h>
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#include<qptrlist.h>
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#include<qguardedptr.h>
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#include<qfileinfo.h>
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#include"xmpp_xmlcommon.h"
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#include"s5b.h"
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#define SENDBUFSIZE 65536
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using namespace XMPP;
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// firstChildElement
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//
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// Get an element's first child element
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static QDomElement firstChildElement(const QDomElement &e)
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{
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for(QDomNode n = e.firstChild(); !n.isNull(); n = n.nextSibling()) {
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if(n.isElement())
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return n.toElement();
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}
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return QDomElement();
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}
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//----------------------------------------------------------------------------
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// FileTransfer
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//----------------------------------------------------------------------------
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class FileTransfer::Private
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{
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public:
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FileTransferManager *m;
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JT_FT *ft;
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Jid peer;
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QString fname;
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Q_LLONG size;
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Q_LLONG sent;
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QString desc;
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bool rangeSupported;
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Q_LLONG rangeOffset, rangeLength, length;
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QString streamType;
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bool needStream;
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QString id, iq_id;
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S5BConnection *c;
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Jid proxy;
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int state;
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bool sender;
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};
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FileTransfer::FileTransfer(FileTransferManager *m, QObject *parent)
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:QObject(parent)
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{
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d = new Private;
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d->m = m;
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d->ft = 0;
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d->c = 0;
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reset();
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}
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FileTransfer::~FileTransfer()
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{
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reset();
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delete d;
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}
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void FileTransfer::reset()
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{
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d->m->unlink(this);
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delete d->ft;
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d->ft = 0;
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delete d->c;
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d->c = 0;
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d->state = Idle;
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d->needStream = false;
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d->sent = 0;
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d->sender = false;
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}
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void FileTransfer::setProxy(const Jid &proxy)
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{
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d->proxy = proxy;
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}
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void FileTransfer::sendFile(const Jid &to, const QString &fname, Q_LLONG size, const QString &desc)
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{
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d->state = Requesting;
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d->peer = to;
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d->fname = fname;
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d->size = size;
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d->desc = desc;
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d->sender = true;
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d->id = d->m->link(this);
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d->ft = new JT_FT(d->m->client()->rootTask());
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connect(d->ft, SIGNAL(finished()), SLOT(ft_finished()));
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QStringList list;
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list += "http://jabber.org/protocol/bytestreams";
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d->ft->request(to, d->id, fname, size, desc, list);
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d->ft->go(true);
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}
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int FileTransfer::dataSizeNeeded() const
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{
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int pending = d->c->bytesToWrite();
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if(pending >= SENDBUFSIZE)
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return 0;
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Q_LLONG left = d->length - (d->sent + pending);
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int size = SENDBUFSIZE - pending;
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if((Q_LLONG)size > left)
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size = (int)left;
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return size;
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}
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void FileTransfer::writeFileData(const QByteArray &a)
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{
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int pending = d->c->bytesToWrite();
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Q_LLONG left = d->length - (d->sent + pending);
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if(left == 0)
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return;
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QByteArray block;
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if((Q_LLONG)a.size() > left) {
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block = a.copy();
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block.resize((uint)left);
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}
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else
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block = a;
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d->c->write(block);
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}
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Jid FileTransfer::peer() const
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{
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return d->peer;
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}
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QString FileTransfer::fileName() const
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{
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return d->fname;
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}
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Q_LLONG FileTransfer::fileSize() const
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{
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return d->size;
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}
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QString FileTransfer::description() const
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{
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return d->desc;
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}
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bool FileTransfer::rangeSupported() const
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{
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return d->rangeSupported;
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}
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Q_LLONG FileTransfer::offset() const
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{
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return d->rangeOffset;
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}
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Q_LLONG FileTransfer::length() const
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{
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return d->length;
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}
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void FileTransfer::accept(Q_LLONG offset, Q_LLONG length)
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{
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d->state = Connecting;
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d->rangeOffset = offset;
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d->rangeLength = length;
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if(length > 0)
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d->length = length;
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else
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d->length = d->size;
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d->streamType = "http://jabber.org/protocol/bytestreams";
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d->m->con_accept(this);
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}
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void FileTransfer::close()
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{
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if(d->state == Idle)
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return;
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if(d->state == WaitingForAccept)
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d->m->con_reject(this);
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else if(d->state == Active)
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d->c->close();
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reset();
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}
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S5BConnection *FileTransfer::s5bConnection() const
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{
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return d->c;
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}
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void FileTransfer::ft_finished()
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{
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JT_FT *ft = d->ft;
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d->ft = 0;
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if(ft->success()) {
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d->state = Connecting;
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d->rangeOffset = ft->rangeOffset();
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d->length = ft->rangeLength();
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if(d->length == 0)
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d->length = d->size - d->rangeOffset;
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d->streamType = ft->streamType();
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d->c = d->m->client()->s5bManager()->createConnection();
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connect(d->c, SIGNAL(connected()), SLOT(s5b_connected()));
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connect(d->c, SIGNAL(connectionClosed()), SLOT(s5b_connectionClosed()));
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connect(d->c, SIGNAL(bytesWritten(int)), SLOT(s5b_bytesWritten(int)));
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connect(d->c, SIGNAL(error(int)), SLOT(s5b_error(int)));
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if(d->proxy.isValid())
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d->c->setProxy(d->proxy);
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d->c->connectToJid(d->peer, d->id);
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accepted();
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}
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else {
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reset();
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if(ft->statusCode() == 403)
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error(ErrReject);
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else
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error(ErrNeg);
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}
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}
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void FileTransfer::takeConnection(S5BConnection *c)
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{
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d->c = c;
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connect(d->c, SIGNAL(connected()), SLOT(s5b_connected()));
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connect(d->c, SIGNAL(connectionClosed()), SLOT(s5b_connectionClosed()));
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connect(d->c, SIGNAL(readyRead()), SLOT(s5b_readyRead()));
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connect(d->c, SIGNAL(error(int)), SLOT(s5b_error(int)));
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if(d->proxy.isValid())
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d->c->setProxy(d->proxy);
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accepted();
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QTimer::singleShot(0, this, SLOT(doAccept()));
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}
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void FileTransfer::s5b_connected()
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{
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d->state = Active;
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connected();
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}
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void FileTransfer::s5b_connectionClosed()
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{
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reset();
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error(ErrStream);
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}
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void FileTransfer::s5b_readyRead()
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{
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QByteArray a = d->c->read();
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Q_LLONG need = d->length - d->sent;
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if((Q_LLONG)a.size() > need)
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a.resize((uint)need);
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d->sent += a.size();
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if(d->sent == d->length)
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reset();
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readyRead(a);
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}
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void FileTransfer::s5b_bytesWritten(int x)
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{
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d->sent += x;
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if(d->sent == d->length)
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reset();
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bytesWritten(x);
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}
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void FileTransfer::s5b_error(int x)
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{
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reset();
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if(x == S5BConnection::ErrRefused || x == S5BConnection::ErrConnect)
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error(ErrConnect);
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else if(x == S5BConnection::ErrProxy)
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error(ErrProxy);
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else
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error(ErrStream);
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}
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void FileTransfer::man_waitForAccept(const FTRequest &req)
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{
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d->state = WaitingForAccept;
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d->peer = req.from;
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d->id = req.id;
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d->iq_id = req.iq_id;
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d->fname = req.fname;
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d->size = req.size;
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d->desc = req.desc;
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d->rangeSupported = req.rangeSupported;
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}
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void FileTransfer::doAccept()
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{
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d->c->accept();
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}
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//----------------------------------------------------------------------------
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// FileTransferManager
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//----------------------------------------------------------------------------
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class FileTransferManager::Private
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{
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public:
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Client *client;
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QPtrList<FileTransfer> list, incoming;
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JT_PushFT *pft;
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};
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FileTransferManager::FileTransferManager(Client *client)
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:QObject(client)
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{
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d = new Private;
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d->client = client;
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d->pft = new JT_PushFT(d->client->rootTask());
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connect(d->pft, SIGNAL(incoming(const FTRequest &)), SLOT(pft_incoming(const FTRequest &)));
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}
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FileTransferManager::~FileTransferManager()
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{
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d->incoming.setAutoDelete(true);
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d->incoming.clear();
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delete d->pft;
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delete d;
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}
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Client *FileTransferManager::client() const
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{
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return d->client;
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}
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FileTransfer *FileTransferManager::createTransfer()
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{
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FileTransfer *ft = new FileTransfer(this);
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return ft;
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}
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FileTransfer *FileTransferManager::takeIncoming()
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{
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if(d->incoming.isEmpty())
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return 0;
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FileTransfer *ft = d->incoming.getFirst();
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d->incoming.removeRef(ft);
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// move to active list
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d->list.append(ft);
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return ft;
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}
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void FileTransferManager::pft_incoming(const FTRequest &req)
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{
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bool found = false;
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for(QStringList::ConstIterator it = req.streamTypes.begin(); it != req.streamTypes.end(); ++it) {
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if((*it) == "http://jabber.org/protocol/bytestreams") {
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found = true;
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break;
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}
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}
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if(!found) {
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d->pft->respondError(req.from, req.iq_id, 400, "No valid stream types");
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return;
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}
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if(!d->client->s5bManager()->isAcceptableSID(req.from, req.id)) {
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d->pft->respondError(req.from, req.iq_id, 400, "SID in use");
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return;
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}
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FileTransfer *ft = new FileTransfer(this);
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ft->man_waitForAccept(req);
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d->incoming.append(ft);
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incomingReady();
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}
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void FileTransferManager::s5b_incomingReady(S5BConnection *c)
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{
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QPtrListIterator<FileTransfer> it(d->list);
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FileTransfer *ft = 0;
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for(FileTransfer *i; (i = it.current()); ++it) {
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if(i->d->needStream && i->d->peer.compare(c->peer()) && i->d->id == c->sid()) {
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ft = i;
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break;
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}
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}
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if(!ft) {
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c->close();
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delete c;
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return;
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}
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ft->takeConnection(c);
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}
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QString FileTransferManager::link(FileTransfer *ft)
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{
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d->list.append(ft);
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return d->client->s5bManager()->genUniqueSID(ft->d->peer);
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}
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void FileTransferManager::con_accept(FileTransfer *ft)
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{
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ft->d->needStream = true;
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d->pft->respondSuccess(ft->d->peer, ft->d->iq_id, ft->d->rangeOffset, ft->d->rangeLength, ft->d->streamType);
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}
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void FileTransferManager::con_reject(FileTransfer *ft)
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{
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d->pft->respondError(ft->d->peer, ft->d->iq_id, 403, "Declined");
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}
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void FileTransferManager::unlink(FileTransfer *ft)
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{
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d->list.removeRef(ft);
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}
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//----------------------------------------------------------------------------
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// JT_FT
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//----------------------------------------------------------------------------
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class JT_FT::Private
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{
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public:
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QDomElement iq;
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Jid to;
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Q_LLONG size, rangeOffset, rangeLength;
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QString streamType;
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QStringList streamTypes;
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};
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JT_FT::JT_FT(Task *parent)
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:Task(parent)
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{
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d = new Private;
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}
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JT_FT::~JT_FT()
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{
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delete d;
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}
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void JT_FT::request(const Jid &to, const QString &_id, const QString &fname, Q_LLONG size, const QString &desc, const QStringList &streamTypes)
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{
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QDomElement iq;
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d->to = to;
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iq = createIQ(doc(), "set", to.full(), id());
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QDomElement si = doc()->createElement("si");
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si.setAttribute("xmlns", "http://jabber.org/protocol/si");
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si.setAttribute("id", _id);
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si.setAttribute("profile", "http://jabber.org/protocol/si/profile/file-transfer");
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QDomElement file = doc()->createElement("file");
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file.setAttribute("xmlns", "http://jabber.org/protocol/si/profile/file-transfer");
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file.setAttribute("name", fname);
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file.setAttribute("size", QString::number(size));
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if(!desc.isEmpty()) {
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QDomElement de = doc()->createElement("desc");
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de.appendChild(doc()->createTextNode(desc));
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file.appendChild(de);
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}
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QDomElement range = doc()->createElement("range");
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file.appendChild(range);
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si.appendChild(file);
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QDomElement feature = doc()->createElement("feature");
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feature.setAttribute("xmlns", "http://jabber.org/protocol/feature-neg");
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QDomElement x = doc()->createElement("x");
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x.setAttribute("xmlns", "jabber:x:data");
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x.setAttribute("type", "form");
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QDomElement field = doc()->createElement("field");
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field.setAttribute("var", "stream-method");
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field.setAttribute("type", "list-single");
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for(QStringList::ConstIterator it = streamTypes.begin(); it != streamTypes.end(); ++it) {
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QDomElement option = doc()->createElement("option");
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QDomElement value = doc()->createElement("value");
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value.appendChild(doc()->createTextNode(*it));
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option.appendChild(value);
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field.appendChild(option);
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}
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x.appendChild(field);
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feature.appendChild(x);
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si.appendChild(feature);
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iq.appendChild(si);
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d->streamTypes = streamTypes;
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d->size = size;
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d->iq = iq;
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}
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Q_LLONG JT_FT::rangeOffset() const
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{
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return d->rangeOffset;
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}
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Q_LLONG JT_FT::rangeLength() const
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{
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return d->rangeLength;
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}
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QString JT_FT::streamType() const
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{
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return d->streamType;
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}
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void JT_FT::onGo()
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{
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send(d->iq);
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}
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bool JT_FT::take(const QDomElement &x)
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{
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if(!iqVerify(x, d->to, id()))
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return false;
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if(x.attribute("type") == "result") {
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QDomElement si = firstChildElement(x);
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if(si.attribute("xmlns") != "http://jabber.org/protocol/si" || si.tagName() != "si") {
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setError(900, "");
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return true;
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}
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QString id = si.attribute("id");
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Q_LLONG range_offset = 0;
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Q_LLONG range_length = 0;
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QDomElement file = si.elementsByTagName("file").item(0).toElement();
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if(!file.isNull()) {
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QDomElement range = file.elementsByTagName("range").item(0).toElement();
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if(!range.isNull()) {
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int x;
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bool ok;
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if(range.hasAttribute("offset")) {
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#if QT_VERSION >= 0x030200
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x = range.attribute("offset").toLongLong(&ok);
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#else
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x = range.attribute("offset").toLong(&ok);
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#endif
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if(!ok || x < 0) {
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setError(900, "");
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return true;
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}
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range_offset = x;
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}
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if(range.hasAttribute("length")) {
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#if QT_VERSION >= 0x030200
|
|
x = range.attribute("length").toLongLong(&ok);
|
|
#else
|
|
x = range.attribute("length").toLong(&ok);
|
|
#endif
|
|
if(!ok || x < 0) {
|
|
setError(900, "");
|
|
return true;
|
|
}
|
|
range_length = x;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(range_offset > d->size || (range_length > (d->size - range_offset))) {
|
|
setError(900, "");
|
|
return true;
|
|
}
|
|
|
|
QString streamtype;
|
|
QDomElement feature = si.elementsByTagName("feature").item(0).toElement();
|
|
if(!feature.isNull() && feature.attribute("xmlns") == "http://jabber.org/protocol/feature-neg") {
|
|
QDomElement x = feature.elementsByTagName("x").item(0).toElement();
|
|
if(!x.isNull() && x.attribute("type") == "submit") {
|
|
QDomElement field = x.elementsByTagName("field").item(0).toElement();
|
|
if(!field.isNull() && field.attribute("var") == "stream-method") {
|
|
QDomElement value = field.elementsByTagName("value").item(0).toElement();
|
|
if(!value.isNull())
|
|
streamtype = value.text();
|
|
}
|
|
}
|
|
}
|
|
|
|
// must be one of the offered streamtypes
|
|
bool found = false;
|
|
for(QStringList::ConstIterator it = d->streamTypes.begin(); it != d->streamTypes.end(); ++it) {
|
|
if((*it) == streamtype) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
if(!found)
|
|
return true;
|
|
|
|
d->rangeOffset = range_offset;
|
|
d->rangeLength = range_length;
|
|
d->streamType = streamtype;
|
|
setSuccess();
|
|
}
|
|
else {
|
|
setError(x);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
//----------------------------------------------------------------------------
|
|
// JT_PushFT
|
|
//----------------------------------------------------------------------------
|
|
JT_PushFT::JT_PushFT(Task *parent)
|
|
:Task(parent)
|
|
{
|
|
}
|
|
|
|
JT_PushFT::~JT_PushFT()
|
|
{
|
|
}
|
|
|
|
void JT_PushFT::respondSuccess(const Jid &to, const QString &id, Q_LLONG rangeOffset, Q_LLONG rangeLength, const QString &streamType)
|
|
{
|
|
QDomElement iq = createIQ(doc(), "result", to.full(), id);
|
|
QDomElement si = doc()->createElement("si");
|
|
si.setAttribute("xmlns", "http://jabber.org/protocol/si");
|
|
|
|
if(rangeOffset != 0 || rangeLength != 0) {
|
|
QDomElement file = doc()->createElement("file");
|
|
file.setAttribute("xmlns", "http://jabber.org/protocol/si/profile/file-transfer");
|
|
QDomElement range = doc()->createElement("range");
|
|
if(rangeOffset > 0)
|
|
range.setAttribute("offset", QString::number(rangeOffset));
|
|
if(rangeLength > 0)
|
|
range.setAttribute("length", QString::number(rangeLength));
|
|
file.appendChild(range);
|
|
si.appendChild(file);
|
|
}
|
|
|
|
QDomElement feature = doc()->createElement("feature");
|
|
feature.setAttribute("xmlns", "http://jabber.org/protocol/feature-neg");
|
|
QDomElement x = doc()->createElement("x");
|
|
x.setAttribute("xmlns", "jabber:x:data");
|
|
x.setAttribute("type", "submit");
|
|
|
|
QDomElement field = doc()->createElement("field");
|
|
field.setAttribute("var", "stream-method");
|
|
QDomElement value = doc()->createElement("value");
|
|
value.appendChild(doc()->createTextNode(streamType));
|
|
field.appendChild(value);
|
|
|
|
x.appendChild(field);
|
|
feature.appendChild(x);
|
|
|
|
si.appendChild(feature);
|
|
iq.appendChild(si);
|
|
send(iq);
|
|
}
|
|
|
|
void JT_PushFT::respondError(const Jid &to, const QString &id, int code, const QString &str)
|
|
{
|
|
QDomElement iq = createIQ(doc(), "error", to.full(), id);
|
|
QDomElement err = textTag(doc(), "error", str);
|
|
err.setAttribute("code", QString::number(code));
|
|
iq.appendChild(err);
|
|
send(iq);
|
|
}
|
|
|
|
bool JT_PushFT::take(const QDomElement &e)
|
|
{
|
|
// must be an iq-set tag
|
|
if(e.tagName() != "iq")
|
|
return false;
|
|
if(e.attribute("type") != "set")
|
|
return false;
|
|
|
|
QDomElement si = firstChildElement(e);
|
|
if(si.attribute("xmlns") != "http://jabber.org/protocol/si" || si.tagName() != "si")
|
|
return false;
|
|
if(si.attribute("profile") != "http://jabber.org/protocol/si/profile/file-transfer")
|
|
return false;
|
|
|
|
Jid from(e.attribute("from"));
|
|
QString id = si.attribute("id");
|
|
|
|
QDomElement file = si.elementsByTagName("file").item(0).toElement();
|
|
if(file.isNull())
|
|
return true;
|
|
|
|
QString fname = file.attribute("name");
|
|
if(fname.isEmpty()) {
|
|
respondError(from, id, 400, "Bad file name");
|
|
return true;
|
|
}
|
|
|
|
// ensure kosher
|
|
{
|
|
QFileInfo fi(fname);
|
|
fname = fi.fileName();
|
|
}
|
|
|
|
bool ok;
|
|
#if QT_VERSION >= 0x030200
|
|
Q_LLONG size = file.attribute("size").toLongLong(&ok);
|
|
#else
|
|
Q_LLONG size = file.attribute("size").toLong(&ok);
|
|
#endif
|
|
if(!ok || size < 0) {
|
|
respondError(from, id, 400, "Bad file size");
|
|
return true;
|
|
}
|
|
|
|
QString desc;
|
|
QDomElement de = file.elementsByTagName("desc").item(0).toElement();
|
|
if(!de.isNull())
|
|
desc = de.text();
|
|
|
|
bool rangeSupported = false;
|
|
QDomElement range = file.elementsByTagName("range").item(0).toElement();
|
|
if(!range.isNull())
|
|
rangeSupported = true;
|
|
|
|
QStringList streamTypes;
|
|
QDomElement feature = si.elementsByTagName("feature").item(0).toElement();
|
|
if(!feature.isNull() && feature.attribute("xmlns") == "http://jabber.org/protocol/feature-neg") {
|
|
QDomElement x = feature.elementsByTagName("x").item(0).toElement();
|
|
if(!x.isNull() /*&& x.attribute("type") == "form"*/) {
|
|
QDomElement field = x.elementsByTagName("field").item(0).toElement();
|
|
if(!field.isNull() && field.attribute("var") == "stream-method" && field.attribute("type") == "list-single") {
|
|
QDomNodeList nl = field.elementsByTagName("option");
|
|
for(uint n = 0; n < nl.count(); ++n) {
|
|
QDomElement e = nl.item(n).toElement();
|
|
QDomElement value = e.elementsByTagName("value").item(0).toElement();
|
|
if(!value.isNull())
|
|
streamTypes += value.text();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
FTRequest r;
|
|
r.from = from;
|
|
r.iq_id = e.attribute("id");
|
|
r.id = id;
|
|
r.fname = fname;
|
|
r.size = size;
|
|
r.desc = desc;
|
|
r.rangeSupported = rangeSupported;
|
|
r.streamTypes = streamTypes;
|
|
|
|
incoming(r);
|
|
return true;
|
|
}
|