summaryrefslogtreecommitdiff
path: root/components/html/ntl-web-browser.c
blob: f0b94839fae1ea2c3cdde501f755fff8b2ce0b7d (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
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
#include <WWWCore.h>
#include <WWWStream.h>
#include <WWWTrans.h>
#include <WWWHTTP.h>
#include <WWWMIME.h>
#include <WWWFTP.h>
#include <WWWFile.h>
#include <WWWGophe.h>
#include <WWWZip.h>

/* clean up the cpp namespace -- libwww is particularly dirty */
#undef PACKAGE
#undef VERSION
#undef _

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "glibwww.h"
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#include <gnome.h>
#include <libnautilus/libnautilus.h>
#include <gtkhtml/gtkhtml.h>
#include <libgnorba/gnorba.h>
#include <libgnomevfs/gnome-vfs.h>
#include <libnautilus/nautilus-debug.h>

typedef struct {
  NautilusViewFrame *view_frame;
  GtkWidget *htmlw;
  char *base_url, *base_target_url;

  int prevsel;

  HTMethod method;
  char *post_data;
} BrowserInfo;

typedef struct {
  GtkHTMLStreamHandle sh;
  BrowserInfo *bi;
  char *url;
  HTStream *stream;
} VFSHandle;

extern GtkHTMLStreamHandle gtk_html_stream_ref(GtkHTMLStreamHandle handle);
extern void gtk_html_stream_unref(GtkHTMLStreamHandle handle);
static void do_vfs_load(VFSHandle *handle);

static char *
canonicalize_url (const char *in_url, const char *base_url)
{
  char *ctmp, *ctmp2, *retval, *removebegin, *removeend, *curpos;
  gboolean trailing_slash = FALSE;

  g_return_val_if_fail(in_url, NULL);

  if(base_url && base_url[strlen(base_url)-1] == '/')
    trailing_slash = TRUE;

  ctmp = strstr(in_url, "://");
  if(ctmp)
    {
      retval = g_strdup(in_url);
      goto out;
    }
  else if(*in_url == '/')
    {
      int inc = 0;

      if(trailing_slash)
	inc++;

      ctmp = base_url?strstr(base_url, "://"):NULL;
      if(!ctmp)
	{
	  retval = g_strconcat("file://", in_url, NULL);
	  goto out;
	}

      ctmp2 = strchr(ctmp + 3, '/');

      retval = g_strconcat(base_url, in_url+inc, NULL);
      goto out;
    }

  /* XXX TODO - We should really do processing of .. and . in URLs */

  ctmp = base_url?strstr(base_url, "://"):NULL;
  if(!ctmp)
    {
      char *cwd;

      if(in_url)
	{
	  ctmp = strchr(in_url, ':');
	  if(ctmp) /* OK, it's some funky URL scheme without any /'s */
	    return g_strdup(in_url);
	}

      cwd = g_get_current_dir();
      ctmp = g_strconcat("file://", cwd, "/", in_url, NULL);
      g_free(cwd);

      retval = ctmp;
      goto out;
    }

  retval = g_strconcat(base_url, "/", in_url, NULL);

 out:
  /* Now fix up the /. and /.. pieces */

  ctmp = strstr(retval, "://");
  if(!ctmp)
    return retval;

  ctmp += 3;
  ctmp = strchr(ctmp, '/');
  if(!ctmp) {
    ctmp = retval;
    retval = g_strconcat(retval, trailing_slash?"":"/", NULL);
    g_free(ctmp);
    return retval;
  }

  removebegin = removeend = NULL;
  do {
    if(removebegin && removeend)
      {
	memmove(removebegin, removeend, strlen(removeend) + 1);
	removebegin = removeend = NULL;
      }
    curpos = ctmp;

  redo:
    ctmp2 = strstr(curpos, "/.");
    if(!ctmp2)
      break;

    if(*(ctmp2 + 2) == '.') /* We have to skip over stuff like /...blahblah or /.foo */
      {
	if(*(ctmp2 + 3) != '/'
	   && *(ctmp2 + 3) != '\0')
	  {
	    curpos = ctmp2 + 3;
	    goto redo;
	  }
      }
    else if(*(ctmp2 + 2) != '/' && *(ctmp2 + 2) != '\0')
      {
	curpos = ctmp2 + 2;
	goto redo;
      }

    switch(*(ctmp2+2))
      {
      case '/':
      case '\0':
	removebegin = ctmp2;
	removeend = ctmp2 + 2;
	break;
      case '.':
	removeend = ctmp2 + 3;
	ctmp2--;
	while((ctmp2 >= ctmp) && *ctmp2 != '/')
	  ctmp2--;
	if(*ctmp2 == '/')
	  removebegin = ctmp2;
	break;
      }

  } while(removebegin);

  return retval;
}

static void
browser_url_load_done(GtkWidget *htmlw, BrowserInfo *bi)
{
  Nautilus_ProgressRequestInfo pri;

  /* FIXME: If this is private, we should not be calling it. */
  gtk_html_private_calc_scrollbars(GTK_HTML(bi->htmlw));

  memset(&pri, 0, sizeof(pri));

  pri.type = Nautilus_PROGRESS_DONE_OK;
  pri.amount = 100.0;
  nautilus_view_frame_request_progress_change(bi->view_frame, &pri);
}

struct _HTStream {
  const HTStreamClass *	isa;
  BrowserInfo *bi;
  GtkHTMLStreamHandle handle;
};

static int netin_stream_write (HTStream * me, const char * s, int l)
{
  gtk_html_write(GTK_HTML(me->bi->htmlw), me->handle, s, l);

  return HT_OK;
}

static int netin_stream_put_character (HTStream * me, char c)
{
  return netin_stream_write(me, &c, 1);
}

static int netin_stream_put_string (HTStream * me, const char * s)
{
  return netin_stream_write(me, s, strlen(s));
}

static int netin_stream_flush (HTStream * me)
{
  return HT_OK;
}

static int netin_stream_free (HTStream * me)
{
  g_message("netin_stream_free");
  if(me->handle)
    gtk_html_end(GTK_HTML(me->bi->htmlw), me->handle, GTK_HTML_STREAM_OK);
  g_free(me);

  return HT_OK;
}

static int netin_stream_abort (HTStream * me, HTList * e)
{
  g_message("netin_stream_abort");
  if(me->handle)
    gtk_html_end(GTK_HTML(me->bi->htmlw), me->handle, GTK_HTML_STREAM_ERROR);
  g_free(me);

  return HT_OK;
}

static const HTStreamClass netin_stream_class =
{		
    "netin_stream",
    netin_stream_flush,
    netin_stream_free,
    netin_stream_abort,
    netin_stream_put_character,
    netin_stream_put_string,
    netin_stream_write
}; 

static HTStream *
netin_stream_new (BrowserInfo *bi, GtkHTMLStreamHandle handle)
{
  HTStream *retval;

  retval = g_new0(HTStream, 1);

  retval->isa = &netin_stream_class;
  retval->bi = bi;
  retval->handle = handle;

  return retval;
}

static gboolean
do_request_delete(gpointer req)
{
  HTRequest_delete(req);

  return FALSE;
}

static int
request_terminator (HTRequest * request, HTResponse * response, void * param, int status)
{
  gpointer d;
  VFSHandle *vfsh;

  d = HTRequest_context(request);
  g_return_val_if_fail(d, HT_OK);
  vfsh = d;

  if (status < 0)
    {
      g_print("Load couldn't be completed successfully (%p)\n", request);
      vfsh->stream->handle = NULL;
      vfsh->stream = NULL;
      do_vfs_load(vfsh);
    }
  else
    {
      g_free(vfsh->url);
      g_free(vfsh);
    }

  HTRequest_setContext(request, NULL);
  g_idle_add(do_request_delete, request);

  return HT_OK;
}

static int
browser_do_post(HTRequest *request, HTStream *stream)
{
  VFSHandle *vfsh = HTRequest_context(request);
  int status;

  g_assert(vfsh);

  status = (*stream->isa->put_block)(stream, vfsh->bi->post_data, strlen(vfsh->bi->post_data));

  g_message("browser_do_post got status %d", status);

  switch(status)
    {
    case HT_LOADED:
    case HT_OK:
      g_free(vfsh->bi->post_data); vfsh->bi->post_data = NULL;
      (*stream->isa->flush)(stream);
    default:
      return status;
      break;
    }
}

static char vfs_read_buf[40960];

static void
browser_vfs_read_callback(GnomeVFSAsyncHandle *h, GnomeVFSResult res, gpointer buffer,
			  GnomeVFSFileSize bytes_requested,
			  GnomeVFSFileSize bytes_read,
			  gpointer data)
{
  VFSHandle *vfsh = data;

  g_message("browser_vfs_read_callback: %ld/%ld bytes", (long) bytes_read, (long) bytes_requested);
  gtk_html_write(GTK_HTML(vfsh->bi->htmlw), vfsh->sh, buffer, bytes_read);

  if(res != GNOME_VFS_OK)
    {
      gtk_html_end(GTK_HTML(vfsh->bi->htmlw), vfsh->sh, GTK_HTML_STREAM_OK);
      gnome_vfs_async_close(h, (GnomeVFSAsyncCloseCallback)gtk_true, NULL);
      g_free(vfsh);
    }

  gnome_vfs_async_read(h, vfs_read_buf, sizeof(vfs_read_buf), browser_vfs_read_callback, data);
}

static void
browser_vfs_callback(GnomeVFSAsyncHandle *h, GnomeVFSResult res, gpointer data)
{
  VFSHandle *vfsh = data;

  g_message("browser_vfs_callback, res was %s", gnome_vfs_result_to_string(res));

  if(res != GNOME_VFS_OK)
    {
      Nautilus_ProgressRequestInfo pri;

      memset(&pri, 0, sizeof(pri));
      pri.type = Nautilus_PROGRESS_DONE_ERROR;
      nautilus_view_frame_request_progress_change(vfsh->bi->view_frame, &pri);

      gtk_html_end(GTK_HTML(vfsh->bi->htmlw), vfsh->sh, GTK_HTML_STREAM_ERROR);
      g_free(vfsh);
    }
  else
    {
      res = gnome_vfs_async_read(h, vfs_read_buf, sizeof(vfs_read_buf), browser_vfs_read_callback, vfsh);
      g_message("Did read, result was %s", gnome_vfs_result_to_string(res));
    }
}

static void
do_vfs_load(VFSHandle *vfsh)
{
  GnomeVFSResult res;
  GnomeVFSAsyncHandle *ah;

  g_warning("Falling back to gnome-vfs for %s", vfsh->url);

  res = gnome_vfs_async_open(&ah, vfsh->url, GNOME_VFS_OPEN_READ, browser_vfs_callback, vfsh);
      
  return;
}

static void
browser_url_requested(GtkWidget *htmlw, const char *url, GtkHTMLStreamHandle handle, BrowserInfo *bi)
{
  char *real_url;
  HTRequest *request;
  HTStream *writer;
  HTAnchor *anchor;
  VFSHandle *vfsh;

  real_url = canonicalize_url(url, bi->base_url);

  vfsh = g_new0(VFSHandle, 1);
  vfsh->sh = handle;
  vfsh->bi = bi;
  vfsh->url = real_url;

  anchor = HTAnchor_findAddress(real_url);
  if(!anchor)
    {
      do_vfs_load(vfsh);
      return;
    }

  request = HTRequest_new();
  HTRequest_setContext(request, vfsh);
  writer = netin_stream_new(bi, handle);
  vfsh->stream = writer;
  HTRequest_setOutputFormat(request, WWW_SOURCE);
  HTRequest_setOutputStream(request, writer);
  if(bi->method == METHOD_POST)
    HTRequest_setPostCallback(request, browser_do_post);
  HTRequest_setAnchor(request, anchor);
  HTRequest_setMethod(request, bi->method);
  bi->method = METHOD_GET;

  if(HTLoad(request, NO) == NO)
    {
      g_warning("Load failed");
      do_vfs_load(vfsh);
      writer->handle = NULL;
      HTRequest_delete(request);
    }
}

static void
browser_set_base(GtkWidget *htmlw, const char *base_url, BrowserInfo *bi)
{
  if(bi->base_url)
    g_free(bi->base_url);
  bi->base_url = g_strdup(base_url);
}

static void
browser_set_base_target(GtkWidget *htmlw, const char *base_target_url, BrowserInfo *bi)
{
  if(bi->base_target_url)
    g_free(bi->base_target_url);
  bi->base_target_url = g_strdup(base_target_url);
}

static void
browser_goto_url_real(GtkWidget *htmlw, const char *url, BrowserInfo *bi)
{
  Nautilus_ProgressRequestInfo pri;

  pri.type = Nautilus_PROGRESS_UNDERWAY;
  pri.amount = 0.0;

  HTNet_killAll();
  g_free(bi->base_url);
  g_free(bi->base_target_url);

  if(url[strlen(url) - 1] == '/')
    {
      bi->base_url = g_strdup(url);
      bi->base_target_url = g_strdup(url);
    }
  else
    {
      bi->base_url = g_dirname(url);
      bi->base_target_url = g_dirname(url);
    }

  gtk_html_begin(GTK_HTML(bi->htmlw), url);
  nautilus_view_frame_request_progress_change(bi->view_frame, &pri);
}

static void
browser_goto_url(GtkWidget *htmlw, const char *url, BrowserInfo *bi)
{
  Nautilus_NavigationRequestInfo nri;
  char *real_url;

  real_url = canonicalize_url(url, bi->base_target_url);

  g_return_if_fail(real_url);

  memset(&nri, 0, sizeof(nri));
  nri.requested_uri = real_url;
  nautilus_view_frame_request_location_change(bi->view_frame, &nri);
  browser_goto_url_real(htmlw, real_url, bi);
  g_free(real_url);
}

static void
browser_select_url(GtkWidget *htmlw, const char *url, BrowserInfo *bi)
{
  Nautilus_SelectionRequestInfo si;
  Nautilus_StatusRequestInfo sri;
  char *real_url = NULL;

  memset(&si, 0, sizeof(si));
  memset(&sri, 0, sizeof(sri));
  if(url && !bi->prevsel)
    {
      si.selected_uris._length = 1;
      sri.status_string = real_url = canonicalize_url(url, bi->base_target_url);
      si.selected_uris._buffer = &real_url;
    }
  else if(!url && bi->prevsel)
    {
      si.selected_uris._length = 0;
    }

  nautilus_view_frame_request_selection_change(bi->view_frame, &si);
  if(sri.status_string)
    nautilus_view_frame_request_status_change(bi->view_frame, &sri);
  g_free(real_url);
  bi->prevsel = url?1:0;
}

static void
browser_title_changed(GtkWidget *htmlw, const char *new_title, BrowserInfo *bi)
{
  nautilus_content_view_frame_request_title_change (NAUTILUS_CONTENT_VIEW_FRAME (bi->view_frame), new_title);
}

static void
browser_submit(GtkWidget *htmlw, const char *method, const char *url, const char *encoding, BrowserInfo *bi)
{
  g_free(bi->post_data); bi->post_data = NULL;

  if(!strcasecmp(method, "POST"))
    {
      char **pieces = g_strsplit(encoding, "&", -1);

      if(pieces)
	{
	  char *ctmp;
	  ctmp = g_strjoinv("\r\n", pieces);
	  bi->post_data = g_strconcat(ctmp, "\r\n", NULL);
	  g_free(ctmp);
	  g_strfreev(pieces);
	  bi->method = METHOD_POST;
	}

      browser_goto_url(htmlw, url, bi);
    }
  else
    {
      char tmp_url[4096];

      g_snprintf(tmp_url, sizeof(tmp_url), "%s?%s", url, encoding);
      browser_goto_url(htmlw, tmp_url, bi);
    }
}

static void
browser_notify_location_change(NautilusViewFrame *view_frame, 
			       Nautilus_NavigationInfo *ni, 
			       BrowserInfo *bi)
{
  if(ni->self_originated)
    return;

  browser_goto_url_real(NULL, ni->requested_uri, bi);
}

static int object_count = 0;

static void
browser_do_destroy(GtkObject *obj)
{
  object_count--;
  if(object_count <= 0)
    gtk_main_quit();
}

static BonoboObject *
make_obj(BonoboGenericFactory *Factory, const char *goad_id, void *closure)
{
  BrowserInfo *bi;
  GtkWidget *wtmp;

  if(strcmp(goad_id, "ntl_web_browser"))
    return NULL;

  bi = g_new0(BrowserInfo, 1);

  bi->htmlw = gtk_html_new();
  gtk_signal_connect(GTK_OBJECT(bi->htmlw), "link_clicked", browser_goto_url, bi);
  gtk_signal_connect(GTK_OBJECT(bi->htmlw), "set_base", browser_set_base, bi);
  gtk_signal_connect(GTK_OBJECT(bi->htmlw), "load_done", browser_url_load_done, bi);
  gtk_signal_connect(GTK_OBJECT(bi->htmlw), "set_base", browser_set_base, bi);
  gtk_signal_connect(GTK_OBJECT(bi->htmlw), "set_base_target", browser_set_base_target, bi);
  gtk_signal_connect(GTK_OBJECT(bi->htmlw), "url_requested", browser_url_requested, bi);
  gtk_signal_connect(GTK_OBJECT(bi->htmlw), "on_url", browser_select_url, bi);
  gtk_signal_connect(GTK_OBJECT(bi->htmlw), "submit", browser_submit, bi);
  gtk_signal_connect(GTK_OBJECT(bi->htmlw), "title_changed", browser_title_changed, bi);

  wtmp = gtk_scrolled_window_new(NULL, NULL);
  gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(wtmp), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
  gtk_container_add(GTK_CONTAINER(wtmp), bi->htmlw);
  gtk_widget_show(bi->htmlw);
  gtk_widget_show(wtmp);

  bi->view_frame = NAUTILUS_VIEW_FRAME (nautilus_content_view_frame_new (wtmp));

  gtk_signal_connect(GTK_OBJECT(bi->view_frame), "notify_location_change", browser_notify_location_change,
		     bi);
  object_count++;
  gtk_signal_connect(GTK_OBJECT(bi->view_frame), "destroy", browser_do_destroy, NULL);

  return BONOBO_OBJECT (bi->view_frame);
}

int main(int argc, char *argv[])
{
  BonoboGenericFactory *factory;
  CORBA_ORB orb;
  CORBA_Environment ev;

  if (getenv("NAUTILUS_DEBUG") != NULL)
    nautilus_make_warnings_and_criticals_stop_in_debugger
      (G_LOG_DOMAIN, g_log_domain_glib, "Gdk", "Gtk", "GnomeVFS", "GnomeUI", "Bonobo", 
       "Nautilus-HTML", "gtkhtml", NULL);


  CORBA_exception_init(&ev);
  orb = gnome_CORBA_init_with_popt_table("ntl-web-browser", VERSION, &argc, argv, NULL, 0, NULL,
					 GNORBA_INIT_SERVER_FUNC, &ev);


  gnome_vfs_init();
  gdk_rgb_init();
  glibwww_init("ntl-web-browser", VERSION);
  HTNet_addAfter(request_terminator, NULL, NULL, HT_ALL, HT_FILTER_LAST);
  bonobo_init(orb, CORBA_OBJECT_NIL, CORBA_OBJECT_NIL);

  factory = bonobo_generic_factory_new_multi("ntl_web_browser_factory", make_obj, NULL);

  do {
    bonobo_main();
  } while(object_count > 0);

  return 0;
}