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tdebase/nsplugins/viewer/viewer.cpp

313 lines
8.1 KiB

/*
This is a standalone application that executes Netscape plugins.
Copyright (c) 2000 Matthias Hoelzer-Kluepfel <mhk@caldera.de>
Stefan Schimanski <1Stein@gmx.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include "nsplugin.h"
#include <dcopclient.h>
#include <kapplication.h>
#include <kcmdlineargs.h>
#include <kdebug.h>
#include <kglobal.h>
#include <klocale.h>
#include <kmessagebox.h>
#include <qptrlist.h>
#include <qsocketnotifier.h>
#include <stdlib.h>
#include <sys/resource.h>
#include <sys/time.h>
#include <unistd.h>
#ifdef Bool
#undef Bool
#endif
#include <kconfig.h>
#if QT_VERSION < 0x030100
#include "kxt.h"
#include <X11/Intrinsic.h>
#include <X11/Shell.h>
#else
#include "qxteventloop.h"
#include "glibevents.h"
#endif
/**
* Use RLIMIT_DATA on systems that don't define RLIMIT_AS,
* such as FreeBSD 4.
*/
#ifndef RLIMIT_AS
#define RLIMIT_AS RLIMIT_DATA
#endif
/**
* The error handler catches all X errors, writes the error
* message to the debug log and continues.
*
* This is done to prevent abortion of the plugin viewer
* in case the plugin does some invalid X operation.
*
*/
static int x_errhandler(Display *dpy, XErrorEvent *error)
{
char errstr[256];
XGetErrorText(dpy, error->error_code, errstr, 256);
kdDebug(1430) << "Detected X Error: " << errstr << endl;
return 1;
}
/*
* As the plugin viewer needs to be a motif application, I give in to
* the "old style" and keep lot's of global vars. :-)
*/
static QCString g_dcopId;
/**
* parseCommandLine - get command line parameters
*
*/
void parseCommandLine(int argc, char *argv[])
{
for (int i=0; i<argc; i++)
{
if (!strcmp(argv[i], "-dcopid") && (i+1 < argc))
{
g_dcopId = argv[i+1];
i++;
}
}
}
#if QT_VERSION < 0x030100
static XtAppContext g_appcon;
static bool g_quit = false;
void quitXt()
{
g_quit = true;
}
/**
* socket notifier handling
*
*/
struct SocketNot
{
int fd;
QObject *obj;
XtInputId id;
};
QPtrList<SocketNot> _notifiers[3];
/**
* socketCallback - send event to the socket notifier
*
*/
void socketCallback(void *client_data, int* /*source*/, XtInputId* /*id*/)
{
kdDebug(1430) << "-> socketCallback( client_data=" << client_data << " )" << endl;
QEvent event( QEvent::SockAct );
SocketNot *socknot = (SocketNot *)client_data;
kdDebug(1430) << "obj=" << (void*)socknot->obj << endl;
QApplication::sendEvent( socknot->obj, &event );
kdDebug(1430) << "<- socketCallback" << endl;
}
/**
* qt_set_socket_handler - redefined internal qt function to register sockets
* The linker looks in the main binary first and finds this implementation before
* the original one in Qt. I hope this works with every dynamic library loader on any OS.
*
*/
extern bool qt_set_socket_handler( int, int, QObject *, bool );
bool qt_set_socket_handler( int sockfd, int type, QObject *obj, bool enable )
{
if ( sockfd < 0 || type < 0 || type > 2 || obj == 0 ) {
#if defined(CHECK_RANGE)
qWarning( "QSocketNotifier: Internal error" );
#endif
return FALSE;
}
XtPointer inpMask = 0;
switch (type) {
case QSocketNotifier::Read: inpMask = (XtPointer)XtInputReadMask; break;
case QSocketNotifier::Write: inpMask = (XtPointer)XtInputWriteMask; break;
case QSocketNotifier::Exception: inpMask = (XtPointer)XtInputExceptMask; break;
default: return FALSE;
}
if (enable) {
SocketNot *sn = new SocketNot;
sn->obj = obj;
sn->fd = sockfd;
if( _notifiers[type].isEmpty() ) {
_notifiers[type].insert( 0, sn );
} else {
SocketNot *p = _notifiers[type].first();
while ( p && p->fd > sockfd )
p = _notifiers[type].next();
#if defined(CHECK_STATE)
if ( p && p->fd==sockfd ) {
static const char *t[] = { "read", "write", "exception" };
qWarning( "QSocketNotifier: Multiple socket notifiers for "
"same socket %d and type %s", sockfd, t[type] );
}
#endif
if ( p )
_notifiers[type].insert( _notifiers[type].at(), sn );
else
_notifiers[type].append( sn );
}
sn->id = XtAppAddInput( g_appcon, sockfd, inpMask, socketCallback, sn );
} else {
SocketNot *sn = _notifiers[type].first();
while ( sn && !(sn->obj == obj && sn->fd == sockfd) )
sn = _notifiers[type].next();
if ( !sn ) // not found
return FALSE;
XtRemoveInput( sn->id );
_notifiers[type].remove();
}
return TRUE;
}
#endif
int main(int argc, char** argv)
{
// nspluginviewer is a helper app, it shouldn't do session management at all
setenv( "SESSION_MANAGER", "", 1 );
// trap X errors
kdDebug(1430) << "1 - XSetErrorHandler" << endl;
XSetErrorHandler(x_errhandler);
setvbuf( stderr, NULL, _IONBF, 0 );
kdDebug(1430) << "2 - parseCommandLine" << endl;
parseCommandLine(argc, argv);
#if QT_VERSION < 0x030100
// Create application
kdDebug(1430) << "3 - XtToolkitInitialize" << endl;
XtToolkitInitialize();
g_appcon = XtCreateApplicationContext();
Display *dpy = XtOpenDisplay(g_appcon, NULL, "nspluginviewer", "nspluginviewer",
0, 0, &argc, argv);
_notifiers[0].setAutoDelete( TRUE );
_notifiers[1].setAutoDelete( TRUE );
_notifiers[2].setAutoDelete( TRUE );
kdDebug(1430) << "4 - KXtApplication app" << endl;
KLocale::setMainCatalogue("nsplugin");
KXtApplication app(dpy, argc, argv, "nspluginviewer");
#else
kdDebug(1430) << "3 - create QXtEventLoop" << endl;
QXtEventLoop integrator( "nspluginviewer" );
parseCommandLine(argc, argv);
KLocale::setMainCatalogue("nsplugin");
kdDebug(1430) << "4 - create KApplication" << endl;
KApplication app( argc, argv, "nspluginviewer" );
GlibEvents glibevents;
#endif
{
KConfig cfg("kcmnspluginrc", true);
cfg.setGroup("Misc");
int v = KCLAMP(cfg.readNumEntry("Nice Level", 0), 0, 19);
if (v > 0) {
nice(v);
}
v = cfg.readNumEntry("Max Memory", 0);
if (v > 0) {
rlimit rl;
memset(&rl, 0, sizeof(rl));
if (0 == getrlimit(RLIMIT_AS, &rl)) {
rl.rlim_cur = kMin(v, int(rl.rlim_max));
setrlimit(RLIMIT_AS, &rl);
}
}
}
// initialize the dcop client
kdDebug(1430) << "5 - app.dcopClient" << endl;
DCOPClient *dcop = app.dcopClient();
if (!dcop->attach())
{
KMessageBox::error(NULL,
i18n("There was an error connecting to the Desktop "
"communications server. Please make sure that "
"the 'dcopserver' process has been started, and "
"then try again."),
i18n("Error Connecting to DCOP Server"));
exit(1);
}
kdDebug(1430) << "6 - dcop->registerAs" << endl;
if (g_dcopId)
g_dcopId = dcop->registerAs( g_dcopId, false );
else
g_dcopId = dcop->registerAs("nspluginviewer");
dcop->setNotifications(true);
// create dcop interface
kdDebug(1430) << "7 - new NSPluginViewer" << endl;
NSPluginViewer *viewer = new NSPluginViewer( "viewer", 0 );
// start main loop
#if QT_VERSION < 0x030100
kdDebug(1430) << "8 - XtAppProcessEvent" << endl;
while (!g_quit)
XtAppProcessEvent( g_appcon, XtIMAll);
#else
kdDebug(1430) << "8 - app.exec()" << endl;
app.exec();
#endif
// delete viewer
delete viewer;
}