summaryrefslogtreecommitdiffstats
path: root/nsplugins/viewer/viewer.cpp
blob: af72ef6cc394367087e05610685cf09185885892 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
/*

  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 <tqptrlist.h>
#include <tqsocketnotifier.h>
#include <stdlib.h>
#include <sys/resource.h>
#include <sys/time.h>
#include <unistd.h>

#ifdef Bool
#undef Bool
#endif
#include <kconfig.h>

#if TQT_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 TQCString 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 TQT_VERSION < 0x030100

static XtAppContext g_appcon;
static bool g_quit = false;

void quitXt()
{
   g_quit = true;
}


/**
 * socket notifier handling
 *
 */

struct SocketNot
{
  int fd;
  TQObject *obj;
  XtInputId id;
};

TQPtrList<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;

  TQEvent event( TQEvent::SockAct );
  SocketNot *socknot = (SocketNot *)client_data;
  kdDebug(1430) << "obj=" << (void*)socknot->obj << endl;
  TQApplication::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, TQObject *, bool );
bool qt_set_socket_handler( int sockfd, int type, TQObject *obj, bool enable )
{
  if ( sockfd < 0 || type < 0 || type > 2 || obj == 0 ) {
#if defined(CHECK_RANGE)
      tqWarning( "TQSocketNotifier: Internal error" );
#endif
      return FALSE;
  }

  XtPointer inpMask = 0;

  switch (type) {
  case TQSocketNotifier::Read:      inpMask = (XtPointer)XtInputReadMask; break;
  case TQSocketNotifier::Write:     inpMask = (XtPointer)XtInputWriteMask; break;
  case TQSocketNotifier::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" };
              tqWarning( "TQSocketNotifier: 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 TQT_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 TDEApplication" << endl;
   TDEApplication app( argc,  argv, "nspluginviewer" );
   GlibEvents glibevents;
#endif

   {
      TDEConfig 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 != 0)
      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 TQT_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;
}