browser.c

   1 #include <limits.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <sys/types.h>
   5 #include <sys/stat.h>
   6 #include <fcntl.h>
   7 #include <string.h>
   8
   9 #include <gtk/gtk.h>
  10 #include <gtk/gtkx.h>
  11 #include <gdk/gdkkeysyms.h>
  12 #include <gio/gio.h>
  13 #include <webkit2/webkit2.h>
  14 #include <JavaScriptCore/JavaScript.h>
  15
  16
  17 static gboolean button_tablabel(GtkWidget *, GdkEvent *, gpointer);
  18 static void client_destroy(GtkWidget *, gpointer);
  19 static WebKitWebView *client_new(const gchar *, WebKitWebView *, gboolean,
  20                                  gboolean);
  21 static WebKitWebView *client_new_request(WebKitWebView *, WebKitNavigationAction *,
  22                                          gpointer);
  23 static void cooperation_setup(void);
  24 static void changed_download_progress(GObject *, GParamSpec *, gpointer);
  25 static void changed_load_progress(GObject *, GParamSpec *, gpointer);
  26 static void changed_favicon(GObject *, GParamSpec *, gpointer);
  27 static void changed_title(GObject *, GParamSpec *, gpointer);
  28 static void changed_uri(GObject *, GParamSpec *, gpointer);
  29 static gboolean crashed_web_view(WebKitWebView *, gpointer);
  30 static gboolean decide_policy(WebKitWebView *, WebKitPolicyDecision *,
  31                               WebKitPolicyDecisionType, gpointer);
  32 static gboolean download_handle(WebKitDownload *, gchar *, gpointer);
  33 static void download_handle_start(WebKitWebView *, WebKitDownload *, gpointer);
  34 static void downloadmanager_cancel(GtkToolButton *, gpointer);
  35 static gboolean downloadmanager_delete(GtkWidget *, gpointer);
  36 static void downloadmanager_setup(void);
  37 static gchar *ensure_uri_scheme(const gchar *);
  38 static void external_handler_run(GSimpleAction *, GVariant *, gpointer);
  39 static void grab_environment_configuration(void);
  40 static void grab_feeds_finished(GObject *, GAsyncResult *, gpointer);
  41 static void hover_web_view(WebKitWebView *, WebKitHitTestResult *, guint, gpointer);
  42 static void icon_location(GtkEntry *, GtkEntryIconPosition, GdkEvent *, gpointer);
  43 static gboolean key_common(GtkWidget *, GdkEvent *, gpointer);
  44 static gboolean key_downloadmanager(GtkWidget *, GdkEvent *, gpointer);
  45 static gboolean key_location(GtkWidget *, GdkEvent *, gpointer);
  46 static gboolean key_web_view(GtkWidget *, GdkEvent *, gpointer);
  47 static void keywords_load(void);
  48 static gboolean keywords_try_search(WebKitWebView *, const gchar *);
  49 static void mainwindow_setup(void);
  50 static void mainwindow_title(gint);
  51 static void mainwindow_title_before(GtkNotebook *, GtkWidget *, guint, gpointer);
  52 static gboolean menu_web_view(WebKitWebView *, WebKitContextMenu *, GdkEvent *,
  53                               WebKitHitTestResult *, gpointer);
  54 static gboolean quit_if_nothing_active(void);
  55 static gboolean remote_msg(GIOChannel *, GIOCondition, gpointer);
  56 static void run_user_scripts(WebKitWebView *);
  57 static void search(gpointer, gint);
  58 static void show_web_view(WebKitWebView *, gpointer);
  59 static void trust_user_certs(WebKitWebContext *);
  60
  61
  62 struct Client
  63 {
  64     gchar *external_handler_uri;
  65     gchar *hover_uri;
  66     gchar *feed_html;
  67     GtkWidget *location;
  68     GtkWidget *tabicon;
  69     GtkWidget *tablabel;
  70     GtkWidget *vbox;
  71     GtkWidget *web_view;
  72     gboolean focus_new_tab;
  73 };
  74
  75 struct MainWindow
  76 {
  77     GtkWidget *win;
  78     GtkWidget *notebook;
  79 } mw;
  80
  81 struct DownloadManager
  82 {
  83     GtkWidget *scroll;
  84     GtkWidget *toolbar;
  85     GtkWidget *win;
  86 } dm;
  87
  88
  89 static const gchar *accepted_language[2] = { NULL, NULL };
  90 static gint clients = 0, downloads = 0;
  91 static gboolean cooperative_alone = TRUE;
  92 static gboolean cooperative_instances = TRUE;
  93 static int cooperative_pipe_fp = 0;
  94 static gchar *download_dir = "/var/tmp";
  95 static gboolean enable_console_to_stdout = FALSE;
  96 static gchar *fifo_suffix = "main";
  97 static gdouble global_zoom = 1.0;
  98 static gchar *history_file = NULL;
  99 static gchar *home_uri = "about:blank";
 100 static gboolean initial_wc_setup_done = FALSE;
 101 static GHashTable *keywords = NULL;
 102 static gchar *search_text = NULL;
 103 static GtkPositionType tab_pos = GTK_POS_TOP;
 104 static gint tab_width_chars = 20;
 105 static gchar *user_agent = NULL;
 106
 107
 108 gboolean
 109 button_tablabel(GtkWidget *widget, GdkEvent *event, gpointer data)
 110 {
 111     if (event->type == GDK_BUTTON_RELEASE)
 112     {
 113         switch (((GdkEventButton *)event)->button)
 114         {
 115             case 2:
 116                 client_destroy(NULL, data);
 117                 return TRUE;
 118         }
 119     }
 120     return FALSE;
 121 }
 122
 123 void
 124 client_destroy(GtkWidget *widget, gpointer data)
 125 {
 126     struct Client *c = (struct Client *)data;
 127     gint idx;
 128
 129     g_signal_handlers_disconnect_by_func(G_OBJECT(c->web_view),
 130                                          changed_load_progress, c);
 131
 132     idx = gtk_notebook_page_num(GTK_NOTEBOOK(mw.notebook), c->vbox);
 133     if (idx == -1)
 134         fprintf(stderr, __NAME__": Tab index was -1, bamboozled\n");
 135     else
 136         gtk_notebook_remove_page(GTK_NOTEBOOK(mw.notebook), idx);
 137
 138     free(c);
 139     clients--;
 140
 141     quit_if_nothing_active();
 142 }
 143
 144 WebKitWebView *
 145 client_new(const gchar *uri, WebKitWebView *related_wv, gboolean show,
 146            gboolean focus_tab)
 147 {
 148     struct Client *c;
 149     WebKitWebContext *wc;
 150     gchar *f;
 151     GtkWidget *evbox, *tabbox;
 152
 153     if (uri != NULL && cooperative_instances && !cooperative_alone)
 154     {
 155         f = ensure_uri_scheme(uri);
 156         write(cooperative_pipe_fp, f, strlen(f));
 157         write(cooperative_pipe_fp, "\n", 1);
 158         g_free(f);
 159         return NULL;
 160     }
 161
 162     c = calloc(1, sizeof(struct Client));
 163     if (!c)
 164     {
 165         fprintf(stderr, __NAME__": fatal: calloc failed\n");
 166         exit(EXIT_FAILURE);
 167     }
 168
 169     c->focus_new_tab = focus_tab;
 170
 171     if (related_wv == NULL)
 172         c->web_view = webkit_web_view_new();
 173     else
 174         c->web_view = webkit_web_view_new_with_related_view(related_wv);
 175     wc = webkit_web_view_get_context(WEBKIT_WEB_VIEW(c->web_view));
 176
 177     webkit_web_view_set_zoom_level(WEBKIT_WEB_VIEW(c->web_view), global_zoom);
 178     g_signal_connect(G_OBJECT(c->web_view), "notify::favicon",
 179                      G_CALLBACK(changed_favicon), c);
 180     g_signal_connect(G_OBJECT(c->web_view), "notify::title",
 181                      G_CALLBACK(changed_title), c);
 182     g_signal_connect(G_OBJECT(c->web_view), "notify::uri",
 183                      G_CALLBACK(changed_uri), c);
 184     g_signal_connect(G_OBJECT(c->web_view), "notify::estimated-load-progress",
 185                      G_CALLBACK(changed_load_progress), c);
 186     g_signal_connect(G_OBJECT(c->web_view), "create",
 187                      G_CALLBACK(client_new_request), NULL);
 188     g_signal_connect(G_OBJECT(c->web_view), "context-menu",
 189                      G_CALLBACK(menu_web_view), c);
 190     g_signal_connect(G_OBJECT(c->web_view), "close",
 191                      G_CALLBACK(client_destroy), c);
 192     g_signal_connect(G_OBJECT(c->web_view), "decide-policy",
 193                      G_CALLBACK(decide_policy), NULL);
 194     g_signal_connect(G_OBJECT(c->web_view), "key-press-event",
 195                      G_CALLBACK(key_web_view), c);
 196     g_signal_connect(G_OBJECT(c->web_view), "button-release-event",
 197                      G_CALLBACK(key_web_view), c);
 198     g_signal_connect(G_OBJECT(c->web_view), "scroll-event",
 199                      G_CALLBACK(key_web_view), c);
 200     g_signal_connect(G_OBJECT(c->web_view), "mouse-target-changed",
 201                      G_CALLBACK(hover_web_view), c);
 202     g_signal_connect(G_OBJECT(c->web_view), "web-process-crashed",
 203                      G_CALLBACK(crashed_web_view), c);
 204
 205     if (!initial_wc_setup_done)
 206     {
 207         if (accepted_language[0] != NULL)
 208             webkit_web_context_set_preferred_languages(wc, accepted_language);
 209
 210         g_signal_connect(G_OBJECT(wc), "download-started",
 211                          G_CALLBACK(download_handle_start), NULL);
 212
 213         trust_user_certs(wc);
 214
 215         webkit_web_context_set_favicon_database_directory(wc, NULL);
 216
 217         initial_wc_setup_done = TRUE;
 218     }
 219
 220     if (user_agent != NULL)
 221         g_object_set(G_OBJECT(webkit_web_view_get_settings(WEBKIT_WEB_VIEW(c->web_view))),
 222                      "user-agent", user_agent, NULL);
 223
 224     if (enable_console_to_stdout)
 225         webkit_settings_set_enable_write_console_messages_to_stdout(webkit_web_view_get_settings(WEBKIT_WEB_VIEW(c->web_view)), TRUE);
 226
 227     webkit_settings_set_enable_developer_extras(webkit_web_view_get_settings(WEBKIT_WEB_VIEW(c->web_view)), TRUE);
 228
 229     c->location = gtk_entry_new();
 230     g_signal_connect(G_OBJECT(c->location), "key-press-event",
 231                      G_CALLBACK(key_location), c);
 232     g_signal_connect(G_OBJECT(c->location), "icon-release",
 233                      G_CALLBACK(icon_location), c);
 234     /* XXX This is a workaround. Setting this to NULL (which is done in
 235      * grab_feeds_finished() if no feed has been detected) adds a little
 236      * padding left of the text. Not sure why. The point of this call
 237      * right here is to have that padding right from the start. This
 238      * avoids a graphical artifact. */
 239     gtk_entry_set_icon_from_icon_name(GTK_ENTRY(c->location),
 240                                       GTK_ENTRY_ICON_PRIMARY,
 241                                       NULL);
 242
 243     c->vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
 244     gtk_box_pack_start(GTK_BOX(c->vbox), c->location, FALSE, FALSE, 0);
 245     gtk_box_pack_start(GTK_BOX(c->vbox), c->web_view, TRUE, TRUE, 0);
 246
 247     c->tabicon = gtk_image_new_from_icon_name("text-html", GTK_ICON_SIZE_SMALL_TOOLBAR);
 248
 249     c->tablabel = gtk_label_new(__NAME__);
 250     gtk_label_set_ellipsize(GTK_LABEL(c->tablabel), PANGO_ELLIPSIZE_END);
 251     gtk_label_set_width_chars(GTK_LABEL(c->tablabel), tab_width_chars);
 252
 253     /* XXX I don't own a HiDPI screen, so I don't know if scale_factor
 254      * does the right thing. */
 255     tabbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL,
 256                          5 * gtk_widget_get_scale_factor(mw.win));
 257     gtk_box_pack_start(GTK_BOX(tabbox), c->tabicon, FALSE, FALSE, 0);
 258     gtk_box_pack_start(GTK_BOX(tabbox), c->tablabel, TRUE, TRUE, 0);
 259
 260     evbox = gtk_event_box_new();
 261     gtk_container_add(GTK_CONTAINER(evbox), tabbox);
 262     g_signal_connect(G_OBJECT(evbox), "button-release-event",
 263                      G_CALLBACK(button_tablabel), c);
 264
 265     /* This only shows the event box and the label inside, nothing else.
 266      * Needed because the evbox/label is "internal" to the notebook and
 267      * not part of the normal "widget tree" (IIUC). */
 268     gtk_widget_show_all(evbox);
 269
 270     gtk_notebook_insert_page(GTK_NOTEBOOK(mw.notebook), c->vbox, evbox,
 271                              gtk_notebook_get_current_page(GTK_NOTEBOOK(mw.notebook)) + 1);
 272     gtk_notebook_set_tab_reorderable(GTK_NOTEBOOK(mw.notebook), c->vbox, TRUE);
 273
 274     if (show)
 275         show_web_view(NULL, c);
 276     else
 277         g_signal_connect(G_OBJECT(c->web_view), "ready-to-show",
 278                          G_CALLBACK(show_web_view), c);
 279
 280     if (uri != NULL)
 281     {
 282         f = ensure_uri_scheme(uri);
 283         webkit_web_view_load_uri(WEBKIT_WEB_VIEW(c->web_view), f);
 284         g_free(f);
 285     }
 286
 287     clients++;
 288
 289     return WEBKIT_WEB_VIEW(c->web_view);
 290 }
 291
 292 WebKitWebView *
 293 client_new_request(WebKitWebView *web_view,
 294                    WebKitNavigationAction *navigation_action, gpointer data)
 295 {
 296     return client_new(NULL, web_view, FALSE, FALSE);
 297 }
 298
 299 void
 300 cooperation_setup(void)
 301 {
 302     GIOChannel *towatch;
 303     gchar *fifofilename, *fifopath;
 304
 305     fifofilename = g_strdup_printf("%s-%s", __NAME__".fifo", fifo_suffix);
 306     fifopath = g_build_filename(g_get_user_runtime_dir(), fifofilename, NULL);
 307     g_free(fifofilename);
 308
 309     if (!g_file_test(fifopath, G_FILE_TEST_EXISTS))
 310         mkfifo(fifopath, 0600);
 311
 312     cooperative_pipe_fp = open(fifopath, O_WRONLY | O_NONBLOCK);
 313     if (!cooperative_pipe_fp)
 314     {
 315         fprintf(stderr, __NAME__": Can't open FIFO at all.\n");
 316     }
 317     else
 318     {
 319         if (write(cooperative_pipe_fp, "", 0) == -1)
 320         {
 321             /* Could not do an empty write to the FIFO which means there's
 322              * no one listening. */
 323             close(cooperative_pipe_fp);
 324             towatch = g_io_channel_new_file(fifopath, "r+", NULL);
 325             g_io_add_watch(towatch, G_IO_IN, (GIOFunc)remote_msg, NULL);
 326         }
 327         else
 328             cooperative_alone = FALSE;
 329     }
 330
 331     g_free(fifopath);
 332 }
 333
 334 void
 335 changed_download_progress(GObject *obj, GParamSpec *pspec, gpointer data)
 336 {
 337     WebKitDownload *download = WEBKIT_DOWNLOAD(obj);
 338     WebKitURIResponse *resp;
 339     GtkToolItem *tb = GTK_TOOL_ITEM(data);
 340     gdouble p, size_mb;
 341     const gchar *uri;
 342     gchar *t, *filename, *base;
 343
 344     p = webkit_download_get_estimated_progress(download);
 345     p = p > 1 ? 1 : p;
 346     p = p < 0 ? 0 : p;
 347     p *= 100;
 348     resp = webkit_download_get_response(download);
 349     size_mb = webkit_uri_response_get_content_length(resp) / 1e6;
 350
 351     uri = webkit_download_get_destination(download);
 352     filename = g_filename_from_uri(uri, NULL, NULL);
 353     if (filename == NULL)
 354     {
 355         /* This really should not happen because WebKit uses that URI to
 356          * write to a file... */
 357         fprintf(stderr, __NAME__": Could not construct file name from URI!\n");
 358         t = g_strdup_printf("%s (%.0f%% of %.1f MB)",
 359                             webkit_uri_response_get_uri(resp), p, size_mb);
 360     }
 361     else
 362     {
 363         base = g_path_get_basename(filename);
 364         t = g_strdup_printf("%s (%.0f%% of %.1f MB)", base, p, size_mb);
 365         g_free(filename);
 366         g_free(base);
 367     }
 368     gtk_tool_button_set_label(GTK_TOOL_BUTTON(tb), t);
 369     g_free(t);
 370 }
 371
 372 void
 373 changed_load_progress(GObject *obj, GParamSpec *pspec, gpointer data)
 374 {
 375     struct Client *c = (struct Client *)data;
 376     gdouble p;
 377     gchar *grab_feeds =
 378         "a = document.querySelectorAll('"
 379         "    html > head > link[rel=\"alternate\"][href][type=\"application/atom+xml\"],"
 380         "    html > head > link[rel=\"alternate\"][href][type=\"application/rss+xml\"]"
 381         "');"
 382         "if (a.length == 0)"
 383         "    null;"
 384         "else"
 385         "{"
 386         "    out = '';"
 387         "    for (i = 0; i < a.length; i++)"
 388         "    {"
 389         "        url = encodeURIComponent(a[i].href);"
 390         "        if ('title' in a[i] && a[i].title != '')"
 391         "            title = encodeURIComponent(a[i].title);"
 392         "        else"
 393         "            title = url;"
 394         "        out += '<li><a href=\"' + url + '\">' + title + '</a></li>';"
 395         "    }"
 396         "    out;"
 397         "}";
 398
 399     p = webkit_web_view_get_estimated_load_progress(WEBKIT_WEB_VIEW(c->web_view));
 400     if (p == 1)
 401     {
 402         p = 0;
 403
 404         /* The page has loaded fully. We now run the short JavaScript
 405          * snippet above that operates on the DOM. It tries to grab all
 406          * occurences of <link rel="alternate" ...>, i.e. RSS/Atom feed
 407          * references. */
 408         webkit_web_view_run_javascript(WEBKIT_WEB_VIEW(c->web_view),
 409                                        grab_feeds, NULL,
 410                                        grab_feeds_finished, c);
 411
 412         run_user_scripts(WEBKIT_WEB_VIEW(c->web_view));
 413     }
 414     gtk_entry_set_progress_fraction(GTK_ENTRY(c->location), p);
 415 }
 416
 417 void
 418 changed_favicon(GObject *obj, GParamSpec *pspec, gpointer data)
 419 {
 420     struct Client *c = (struct Client *)data;
 421     cairo_surface_t *f;
 422     int w, h, w_should, h_should;
 423     GdkPixbuf *pb, *pb_scaled;
 424
 425     f = webkit_web_view_get_favicon(WEBKIT_WEB_VIEW(c->web_view));
 426     if (f == NULL)
 427     {
 428         gtk_image_set_from_icon_name(GTK_IMAGE(c->tabicon), "text-html",
 429                                      GTK_ICON_SIZE_SMALL_TOOLBAR);
 430     }
 431     else
 432     {
 433         w = cairo_image_surface_get_width(f);
 434         h = cairo_image_surface_get_height(f);
 435         pb = gdk_pixbuf_get_from_surface(f, 0, 0, w, h);
 436         if (pb != NULL)
 437         {
 438             w_should = 16 * gtk_widget_get_scale_factor(c->tabicon);
 439             h_should = 16 * gtk_widget_get_scale_factor(c->tabicon);
 440             pb_scaled = gdk_pixbuf_scale_simple(pb, w_should, h_should,
 441                                                 GDK_INTERP_BILINEAR);
 442             gtk_image_set_from_pixbuf(GTK_IMAGE(c->tabicon), pb_scaled);
 443
 444             g_object_unref(pb_scaled);
 445             g_object_unref(pb);
 446         }
 447     }
 448 }
 449
 450 void
 451 changed_title(GObject *obj, GParamSpec *pspec, gpointer data)
 452 {
 453     const gchar *t, *u;
 454     struct Client *c = (struct Client *)data;
 455
 456     u = webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view));
 457     t = webkit_web_view_get_title(WEBKIT_WEB_VIEW(c->web_view));
 458
 459     u = u == NULL ? __NAME__ : u;
 460     u = u[0] == 0 ? __NAME__ : u;
 461
 462     t = t == NULL ? u : t;
 463     t = t[0] == 0 ? u : t;
 464
 465     gtk_label_set_text(GTK_LABEL(c->tablabel), t);
 466     mainwindow_title(-1);
 467 }
 468
 469 void
 470 changed_uri(GObject *obj, GParamSpec *pspec, gpointer data)
 471 {
 472     const gchar *t;
 473     struct Client *c = (struct Client *)data;
 474     FILE *fp;
 475
 476     t = webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view));
 477
 478     /* When a web process crashes, we get a "notify::uri" signal, but we
 479      * can no longer read a meaningful URI. It's just an empty string
 480      * now. Not updating the location bar in this scenario is important,
 481      * because we would override the "WEB PROCESS CRASHED" message. */
 482     if (t != NULL && strlen(t) > 0)
 483     {
 484         gtk_entry_set_text(GTK_ENTRY(c->location), t);
 485
 486         if (history_file != NULL)
 487         {
 488             fp = fopen(history_file, "a");
 489             if (fp != NULL)
 490             {
 491                 fprintf(fp, "%s\n", t);
 492                 fclose(fp);
 493             }
 494             else
 495                 perror(__NAME__": Error opening history file");
 496         }
 497     }
 498 }
 499
 500 gboolean
 501 crashed_web_view(WebKitWebView *web_view, gpointer data)
 502 {
 503     gchar *t;
 504     struct Client *c = (struct Client *)data;
 505
 506     t = g_strdup_printf("WEB PROCESS CRASHED: %s",
 507                         webkit_web_view_get_uri(WEBKIT_WEB_VIEW(web_view)));
 508     gtk_entry_set_text(GTK_ENTRY(c->location), t);
 509     g_free(t);
 510
 511     return TRUE;
 512 }
 513
 514 gboolean
 515 decide_policy(WebKitWebView *web_view, WebKitPolicyDecision *decision,
 516               WebKitPolicyDecisionType type, gpointer data)
 517 {
 518     WebKitResponsePolicyDecision *r;
 519
 520     switch (type)
 521     {
 522         case WEBKIT_POLICY_DECISION_TYPE_RESPONSE:
 523             r = WEBKIT_RESPONSE_POLICY_DECISION(decision);
 524             if (!webkit_response_policy_decision_is_mime_type_supported(r))
 525                 webkit_policy_decision_download(decision);
 526             else
 527                 webkit_policy_decision_use(decision);
 528             break;
 529         default:
 530             /* Use whatever default there is. */
 531             return FALSE;
 532     }
 533     return TRUE;
 534 }
 535
 536 void
 537 download_handle_finished(WebKitDownload *download, gpointer data)
 538 {
 539     downloads--;
 540 }
 541
 542 void
 543 download_handle_start(WebKitWebView *web_view, WebKitDownload *download,
 544                       gpointer data)
 545 {
 546     g_signal_connect(G_OBJECT(download), "decide-destination",
 547                      G_CALLBACK(download_handle), data);
 548 }
 549
 550 gboolean
 551 download_handle(WebKitDownload *download, gchar *suggested_filename, gpointer data)
 552 {
 553     gchar *sug_clean, *path, *path2 = NULL, *uri;
 554     GtkToolItem *tb;
 555     int suffix = 1;
 556     size_t i;
 557
 558     sug_clean = g_strdup(suggested_filename);
 559     for (i = 0; i < strlen(sug_clean); i++)
 560         if (sug_clean[i] == G_DIR_SEPARATOR)
 561             sug_clean[i] = '_';
 562
 563     path = g_build_filename(download_dir, sug_clean, NULL);
 564     path2 = g_strdup(path);
 565     while (g_file_test(path2, G_FILE_TEST_EXISTS) && suffix < 1000)
 566     {
 567         g_free(path2);
 568
 569         path2 = g_strdup_printf("%s.%d", path, suffix);
 570         suffix++;
 571     }
 572
 573     if (suffix == 1000)
 574     {
 575         fprintf(stderr, __NAME__": Suffix reached limit for download.\n");
 576         webkit_download_cancel(download);
 577     }
 578     else
 579     {
 580         uri = g_filename_to_uri(path2, NULL, NULL);
 581         webkit_download_set_destination(download, uri);
 582         g_free(uri);
 583
 584         tb = gtk_tool_button_new(NULL, NULL);
 585         gtk_tool_button_set_icon_name(GTK_TOOL_BUTTON(tb), "gtk-delete");
 586         gtk_tool_button_set_label(GTK_TOOL_BUTTON(tb), sug_clean);
 587         gtk_toolbar_insert(GTK_TOOLBAR(dm.toolbar), tb, 0);
 588         gtk_widget_show_all(dm.win);
 589
 590         g_signal_connect(G_OBJECT(download), "notify::estimated-progress",
 591                          G_CALLBACK(changed_download_progress), tb);
 592
 593         downloads++;
 594         g_signal_connect(G_OBJECT(download), "finished",
 595                          G_CALLBACK(download_handle_finished), NULL);
 596
 597         g_object_ref(download);
 598         g_signal_connect(G_OBJECT(tb), "clicked",
 599                          G_CALLBACK(downloadmanager_cancel), download);
 600     }
 601
 602     g_free(sug_clean);
 603     g_free(path);
 604     g_free(path2);
 605
 606     /* Propagate -- to whom it may concern. */
 607     return FALSE;
 608 }
 609
 610 void
 611 downloadmanager_cancel(GtkToolButton *tb, gpointer data)
 612 {
 613     WebKitDownload *download = WEBKIT_DOWNLOAD(data);
 614
 615     webkit_download_cancel(download);
 616     g_object_unref(download);
 617
 618     gtk_widget_destroy(GTK_WIDGET(tb));
 619 }
 620
 621 gboolean
 622 downloadmanager_delete(GtkWidget *obj, gpointer data)
 623 {
 624     if (!quit_if_nothing_active())
 625         gtk_widget_hide(dm.win);
 626
 627     return TRUE;
 628 }
 629
 630 void
 631 downloadmanager_setup(void)
 632 {
 633     dm.win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 634     gtk_window_set_type_hint(GTK_WINDOW(dm.win), GDK_WINDOW_TYPE_HINT_DIALOG);
 635     gtk_window_set_default_size(GTK_WINDOW(dm.win), 500, 250);
 636     gtk_window_set_title(GTK_WINDOW(dm.win), __NAME__" - Download Manager");
 637     g_signal_connect(G_OBJECT(dm.win), "delete-event",
 638                      G_CALLBACK(downloadmanager_delete), NULL);
 639     g_signal_connect(G_OBJECT(dm.win), "key-press-event",
 640                      G_CALLBACK(key_downloadmanager), NULL);
 641
 642     dm.toolbar = gtk_toolbar_new();
 643     gtk_orientable_set_orientation(GTK_ORIENTABLE(dm.toolbar),
 644                                    GTK_ORIENTATION_VERTICAL);
 645     gtk_toolbar_set_style(GTK_TOOLBAR(dm.toolbar), GTK_TOOLBAR_BOTH_HORIZ);
 646     gtk_toolbar_set_show_arrow(GTK_TOOLBAR(dm.toolbar), FALSE);
 647
 648     dm.scroll = gtk_scrolled_window_new(NULL, NULL);
 649     gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(dm.scroll),
 650                                    GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 651     gtk_container_add(GTK_CONTAINER(dm.scroll), dm.toolbar);
 652
 653     gtk_container_add(GTK_CONTAINER(dm.win), dm.scroll);
 654 }
 655
 656 gchar *
 657 ensure_uri_scheme(const gchar *t)
 658 {
 659     gchar *f, *fabs;
 660
 661     f = g_ascii_strdown(t, -1);
 662     if (!g_str_has_prefix(f, "http:") &&
 663         !g_str_has_prefix(f, "https:") &&
 664         !g_str_has_prefix(f, "file:") &&
 665         !g_str_has_prefix(f, "about:") &&
 666         !g_str_has_prefix(f, "data:"))
 667     {
 668         g_free(f);
 669         fabs = realpath(t, NULL);
 670         if (fabs != NULL)
 671         {
 672             f = g_strdup_printf("file://%s", fabs);
 673             free(fabs);
 674         }
 675         else
 676             f = g_strdup_printf("http://%s", t);
 677         return f;
 678     }
 679     else
 680         return g_strdup(t);
 681 }
 682
 683 void
 684 external_handler_run(GSimpleAction *simple, GVariant *param, gpointer data)
 685 {
 686     struct Client *c = (struct Client *)data;
 687     gchar *argv[] = { "lariza-external-handler", "-u", NULL, NULL };
 688     GPid pid;
 689     GError *err = NULL;
 690
 691     (void)simple;
 692     (void)param;
 693
 694     argv[2] = c->external_handler_uri;
 695     if (!g_spawn_async(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL,
 696                        &pid, &err))
 697     {
 698         fprintf(stderr, __NAME__": Could not launch key handler: %s\n",
 699                 err->message);
 700         g_error_free(err);
 701     }
 702     else
 703         g_spawn_close_pid(pid);
 704 }
 705
 706 void
 707 grab_environment_configuration(void)
 708 {
 709     const gchar *e;
 710
 711     e = g_getenv(__NAME_UPPERCASE__"_ACCEPTED_LANGUAGE");
 712     if (e != NULL)
 713         accepted_language[0] = g_strdup(e);
 714
 715     e = g_getenv(__NAME_UPPERCASE__"_DOWNLOAD_DIR");
 716     if (e != NULL)
 717         download_dir = g_strdup(e);
 718
 719     e = g_getenv(__NAME_UPPERCASE__"_ENABLE_CONSOLE_TO_STDOUT");
 720     if (e != NULL)
 721         enable_console_to_stdout = TRUE;
 722
 723     e = g_getenv(__NAME_UPPERCASE__"_FIFO_SUFFIX");
 724     if (e != NULL)
 725         fifo_suffix = g_strdup(e);
 726
 727     e = g_getenv(__NAME_UPPERCASE__"_HISTORY_FILE");
 728     if (e != NULL)
 729         history_file = g_strdup(e);
 730
 731     e = g_getenv(__NAME_UPPERCASE__"_HOME_URI");
 732     if (e != NULL)
 733         home_uri = g_strdup(e);
 734
 735     e = g_getenv(__NAME_UPPERCASE__"_TAB_POS");
 736     if (e != NULL)
 737     {
 738         if (strcmp(e, "top") == 0)
 739             tab_pos = GTK_POS_TOP;
 740         if (strcmp(e, "right") == 0)
 741             tab_pos = GTK_POS_RIGHT;
 742         if (strcmp(e, "bottom") == 0)
 743             tab_pos = GTK_POS_BOTTOM;
 744         if (strcmp(e, "left") == 0)
 745             tab_pos = GTK_POS_LEFT;
 746     }
 747
 748     e = g_getenv(__NAME_UPPERCASE__"_TAB_WIDTH_CHARS");
 749     if (e != NULL)
 750         tab_width_chars = atoi(e);
 751
 752     e = g_getenv(__NAME_UPPERCASE__"_USER_AGENT");
 753     if (e != NULL)
 754         user_agent = g_strdup(e);
 755
 756     e = g_getenv(__NAME_UPPERCASE__"_ZOOM");
 757     if (e != NULL)
 758         global_zoom = atof(e);
 759 }
 760
 761 void
 762 grab_feeds_finished(GObject *object, GAsyncResult *result, gpointer data)
 763 {
 764     struct Client *c = (struct Client *)data;
 765     WebKitJavascriptResult *js_result;
 766     JSCValue *value;
 767     JSCException *exception;
 768     GError *err = NULL;
 769     gchar *str_value;
 770
 771     g_free(c->feed_html);
 772     c->feed_html = NULL;
 773
 774     /* This was taken almost verbatim from the example in WebKit's
 775      * documentation:
 776      *
 777      * https://webkitgtk.org/reference/webkit2gtk/stable/WebKitWebView.html#webkit-web-view-run-javascript-finish */
 778
 779     js_result = webkit_web_view_run_javascript_finish(WEBKIT_WEB_VIEW(object),
 780                                                       result, &err);
 781     if (!js_result)
 782     {
 783         fprintf(stderr, __NAME__": Error running javascript: %s\n", err->message);
 784         g_error_free(err);
 785         return;
 786     }
 787
 788     value = webkit_javascript_result_get_js_value(js_result);
 789     if (jsc_value_is_string(value))
 790     {
 791         str_value = jsc_value_to_string(value);
 792         exception = jsc_context_get_exception(jsc_value_get_context(value));
 793         if (exception != NULL)
 794         {
 795             fprintf(stderr, __NAME__": Error running javascript: %s\n",
 796                     jsc_exception_get_message(exception));
 797         }
 798         else
 799             c->feed_html = str_value;
 800
 801         gtk_entry_set_icon_from_icon_name(GTK_ENTRY(c->location),
 802                                           GTK_ENTRY_ICON_PRIMARY,
 803                                           "application-rss+xml-symbolic");
 804         gtk_entry_set_icon_activatable(GTK_ENTRY(c->location),
 805                                        GTK_ENTRY_ICON_PRIMARY,
 806                                        TRUE);
 807     }
 808     else
 809     {
 810         gtk_entry_set_icon_from_icon_name(GTK_ENTRY(c->location),
 811                                           GTK_ENTRY_ICON_PRIMARY,
 812                                           NULL);
 813     }
 814
 815     webkit_javascript_result_unref(js_result);
 816 }
 817
 818 void
 819 hover_web_view(WebKitWebView *web_view, WebKitHitTestResult *ht, guint modifiers,
 820                gpointer data)
 821 {
 822     struct Client *c = (struct Client *)data;
 823
 824     if (!gtk_widget_is_focus(c->location))
 825     {
 826         if (webkit_hit_test_result_context_is_link(ht))
 827         {
 828             gtk_entry_set_text(GTK_ENTRY(c->location),
 829                                webkit_hit_test_result_get_link_uri(ht));
 830
 831             if (c->hover_uri != NULL)
 832                 g_free(c->hover_uri);
 833             c->hover_uri = g_strdup(webkit_hit_test_result_get_link_uri(ht));
 834         }
 835         else
 836         {
 837             gtk_entry_set_text(GTK_ENTRY(c->location),
 838                                webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view)));
 839
 840             if (c->hover_uri != NULL)
 841                 g_free(c->hover_uri);
 842             c->hover_uri = NULL;
 843         }
 844     }
 845 }
 846
 847 void
 848 icon_location(GtkEntry *entry, GtkEntryIconPosition icon_pos, GdkEvent *event,
 849               gpointer data)
 850 {
 851     struct Client *c = (struct Client *)data;
 852     gchar *d;
 853     gchar *data_template =
 854         "data:text/html,"
 855         "<!DOCTYPE html>"
 856         "<html>"
 857         "    <head>"
 858         "        <meta charset=\"UTF-8\">"
 859         "        <title>Feeds</title>"
 860         "    </head>"
 861         "    <body>"
 862         "        <p>Feeds found on this page:</p>"
 863         "        <ul>"
 864         "        %s"
 865         "        </ul>"
 866         "    </body>"
 867         "</html>";
 868
 869     if (c->feed_html != NULL)
 870     {
 871         /* What we're actually trying to do is show a simple HTML page
 872          * that lists all the feeds on the current page. The function
 873          * webkit_web_view_load_html() looks like the proper way to do
 874          * that. Sad thing is, it doesn't create a history entry, but
 875          * instead simply replaces the content of the current page. This
 876          * is not what we want.
 877          *
 878          * RFC 2397 [0] defines the data URI scheme [1]. We abuse this
 879          * mechanism to show my custom HTML snippet *and* create a
 880          * history entry.
 881          *
 882          * [0]: https://tools.ietf.org/html/rfc2397
 883          * [1]: https://en.wikipedia.org/wiki/Data_URI_scheme */
 884         d = g_strdup_printf(data_template, c->feed_html);
 885         webkit_web_view_load_uri(WEBKIT_WEB_VIEW(c->web_view), d);
 886         g_free(d);
 887     }
 888 }
 889
 890 gboolean
 891 key_common(GtkWidget *widget, GdkEvent *event, gpointer data)
 892 {
 893     struct Client *c = (struct Client *)data;
 894     WebKitWebContext *wc = webkit_web_view_get_context(WEBKIT_WEB_VIEW(c->web_view));
 895     gchar *f;
 896
 897     if (event->type == GDK_KEY_PRESS)
 898     {
 899         if (((GdkEventKey *)event)->state & GDK_MOD1_MASK)
 900         {
 901             switch (((GdkEventKey *)event)->keyval)
 902             {
 903                 case GDK_KEY_q:  /* close window (left hand) */
 904                     client_destroy(NULL, c);
 905                     return TRUE;
 906                 case GDK_KEY_w:  /* home (left hand) */
 907                     f = ensure_uri_scheme(home_uri);
 908                     webkit_web_view_load_uri(WEBKIT_WEB_VIEW(c->web_view), f);
 909                     g_free(f);
 910                     return TRUE;
 911                 case GDK_KEY_e:  /* new tab (left hand) */
 912                     f = ensure_uri_scheme(home_uri);
 913                     client_new(f, NULL, TRUE, TRUE);
 914                     g_free(f);
 915                     return TRUE;
 916                 case GDK_KEY_r:  /* reload (left hand) */
 917                     webkit_web_view_reload_bypass_cache(WEBKIT_WEB_VIEW(
 918                                                         c->web_view));
 919                     return TRUE;
 920                 case GDK_KEY_d:  /* download manager (left hand) */
 921                     gtk_widget_show_all(dm.win);
 922                     return TRUE;
 923                 case GDK_KEY_2:  /* search forward (left hand) */
 924                 case GDK_KEY_n:  /* search forward (maybe both hands) */
 925                     search(c, 1);
 926                     return TRUE;
 927                 case GDK_KEY_3:  /* search backward (left hand) */
 928                     search(c, -1);
 929                     return TRUE;
 930                 case GDK_KEY_l:  /* location (BOTH hands) */
 931                     gtk_widget_grab_focus(c->location);
 932                     return TRUE;
 933                 case GDK_KEY_k:  /* initiate search (BOTH hands) */
 934                     gtk_widget_grab_focus(c->location);
 935                     gtk_entry_set_text(GTK_ENTRY(c->location), ":/");
 936                     gtk_editable_set_position(GTK_EDITABLE(c->location), -1);
 937                     return TRUE;
 938                 case GDK_KEY_c:  /* reload trusted certs (left hand) */
 939                     trust_user_certs(wc);
 940                     return TRUE;
 941                 case GDK_KEY_x:  /* launch external handler (left hand) */
 942                     if (c->external_handler_uri != NULL)
 943                         g_free(c->external_handler_uri);
 944                     c->external_handler_uri = g_strdup(
 945                         webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view)));
 946                     external_handler_run(NULL, NULL, c);
 947                     return TRUE;
 948                 case GDK_KEY_a:  /* go one tab to the left (left hand) */
 949                     gtk_notebook_prev_page(GTK_NOTEBOOK(mw.notebook));
 950                     return TRUE;
 951                 case GDK_KEY_s:  /* go one tab to the right (left hand) */
 952                     gtk_notebook_next_page(GTK_NOTEBOOK(mw.notebook));
 953                     return TRUE;
 954             }
 955         }
 956         /* navigate backward (left hand) */
 957         else if (((GdkEventKey *)event)->keyval == GDK_KEY_F2)
 958         {
 959             webkit_web_view_go_back(WEBKIT_WEB_VIEW(c->web_view));
 960             return TRUE;
 961         }
 962         /* navigate forward (left hand) */
 963         else if (((GdkEventKey *)event)->keyval == GDK_KEY_F3)
 964         {
 965             webkit_web_view_go_forward(WEBKIT_WEB_VIEW(c->web_view));
 966             return TRUE;
 967         }
 968     }
 969
 970     return FALSE;
 971 }
 972
 973 gboolean
 974 key_downloadmanager(GtkWidget *widget, GdkEvent *event, gpointer data)
 975 {
 976     if (event->type == GDK_KEY_PRESS)
 977     {
 978         if (((GdkEventKey *)event)->state & GDK_MOD1_MASK)
 979         {
 980             switch (((GdkEventKey *)event)->keyval)
 981             {
 982                 case GDK_KEY_d:  /* close window (left hand) */
 983                 case GDK_KEY_q:
 984                     downloadmanager_delete(dm.win, NULL);
 985                     return TRUE;
 986             }
 987         }
 988     }
 989
 990     return FALSE;
 991 }
 992
 993 gboolean
 994 key_location(GtkWidget *widget, GdkEvent *event, gpointer data)
 995 {
 996     struct Client *c = (struct Client *)data;
 997     const gchar *t;
 998     gchar *f;
 999
1000     if (key_common(widget, event, data))
1001         return TRUE;
1002
1003     if (event->type == GDK_KEY_PRESS)
1004     {
1005         switch (((GdkEventKey *)event)->keyval)
1006         {
1007             case GDK_KEY_KP_Enter:
1008             case GDK_KEY_Return:
1009                 gtk_widget_grab_focus(c->web_view);
1010                 t = gtk_entry_get_text(GTK_ENTRY(c->location));
1011                 if (t != NULL && t[0] == ':' && t[1] == '/')
1012                 {
1013                     if (search_text != NULL)
1014                         g_free(search_text);
1015                     search_text = g_strdup(t + 2);
1016                     search(c, 0);
1017                 }
1018                 else if (!keywords_try_search(WEBKIT_WEB_VIEW(c->web_view), t))
1019                 {
1020                     f = ensure_uri_scheme(t);
1021                     webkit_web_view_load_uri(WEBKIT_WEB_VIEW(c->web_view), f);
1022                     g_free(f);
1023                 }
1024                 return TRUE;
1025             case GDK_KEY_Escape:
1026                 t = webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view));
1027                 gtk_entry_set_text(GTK_ENTRY(c->location),
1028                                    (t == NULL ? __NAME__ : t));
1029                 return TRUE;
1030         }
1031     }
1032
1033     return FALSE;
1034 }
1035
1036 gboolean
1037 key_web_view(GtkWidget *widget, GdkEvent *event, gpointer data)
1038 {
1039     struct Client *c = (struct Client *)data;
1040     gdouble dx, dy;
1041     gfloat z;
1042
1043     if (key_common(widget, event, data))
1044         return TRUE;
1045
1046     if (event->type == GDK_KEY_PRESS)
1047     {
1048         if (((GdkEventKey *)event)->keyval == GDK_KEY_Escape)
1049         {
1050             webkit_web_view_stop_loading(WEBKIT_WEB_VIEW(c->web_view));
1051             gtk_entry_set_progress_fraction(GTK_ENTRY(c->location), 0);
1052         }
1053     }
1054     else if (event->type == GDK_BUTTON_RELEASE)
1055     {
1056         switch (((GdkEventButton *)event)->button)
1057         {
1058             case 2:
1059                 if (c->hover_uri != NULL)
1060                 {
1061                     client_new(c->hover_uri, NULL, TRUE, FALSE);
1062                     return TRUE;
1063                 }
1064                 break;
1065             case 8:
1066                 webkit_web_view_go_back(WEBKIT_WEB_VIEW(c->web_view));
1067                 return TRUE;
1068             case 9:
1069                 webkit_web_view_go_forward(WEBKIT_WEB_VIEW(c->web_view));
1070                 return TRUE;
1071         }
1072     }
1073     else if (event->type == GDK_SCROLL)
1074     {
1075         if (((GdkEventScroll *)event)->state & GDK_MOD1_MASK ||
1076             ((GdkEventScroll *)event)->state & GDK_CONTROL_MASK)
1077         {
1078             gdk_event_get_scroll_deltas(event, &dx, &dy);
1079             z = webkit_web_view_get_zoom_level(WEBKIT_WEB_VIEW(c->web_view));
1080             z += -dy * 0.1;
1081             z = dx != 0 ? global_zoom : z;
1082             webkit_web_view_set_zoom_level(WEBKIT_WEB_VIEW(c->web_view), z);
1083             return TRUE;
1084         }
1085     }
1086
1087     return FALSE;
1088 }
1089
1090 void
1091 keywords_load(void)
1092 {
1093     GError *err = NULL;
1094     GIOChannel *channel = NULL;
1095     gchar *path = NULL, *buf = NULL;
1096     gchar **tokens = NULL;
1097
1098     keywords = g_hash_table_new(g_str_hash, g_str_equal);
1099
1100     path = g_build_filename(g_get_user_config_dir(), __NAME__, "keywordsearch",
1101                             NULL);
1102     channel = g_io_channel_new_file(path, "r", &err);
1103     if (channel != NULL)
1104     {
1105         while (g_io_channel_read_line(channel, &buf, NULL, NULL, NULL)
1106                == G_IO_STATUS_NORMAL)
1107         {
1108             g_strstrip(buf);
1109             if (buf[0] != '#')
1110             {
1111                 tokens = g_strsplit(buf, " ", 2);
1112                 if (tokens[0] != NULL && tokens[1] != NULL)
1113                     g_hash_table_insert(keywords, g_strdup(tokens[0]),
1114                                         g_strdup(tokens[1]));
1115                 g_strfreev(tokens);
1116             }
1117             g_free(buf);
1118         }
1119         g_io_channel_shutdown(channel, FALSE, NULL);
1120     }
1121     g_free(path);
1122 }
1123
1124 gboolean
1125 keywords_try_search(WebKitWebView *web_view, const gchar *t)
1126 {
1127     gboolean ret = FALSE;
1128     gchar **tokens = NULL;
1129     gchar *val = NULL, *escaped = NULL, *uri = NULL;
1130
1131     tokens = g_strsplit(t, " ", 2);
1132     if (tokens[0] != NULL && tokens[1] != NULL)
1133     {
1134         val = g_hash_table_lookup(keywords, tokens[0]);
1135         if (val != NULL)
1136         {
1137             escaped = g_uri_escape_string(tokens[1], NULL, TRUE);
1138             uri = g_strdup_printf((gchar *)val, escaped);
1139             webkit_web_view_load_uri(web_view, uri);
1140             g_free(uri);
1141             g_free(escaped);
1142             ret = TRUE;
1143         }
1144     }
1145     g_strfreev(tokens);
1146
1147     return ret;
1148 }
1149
1150 void
1151 mainwindow_setup(void)
1152 {
1153     mw.win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
1154     gtk_window_set_default_size(GTK_WINDOW(mw.win), 800, 600);
1155     g_signal_connect(G_OBJECT(mw.win), "destroy", gtk_main_quit, NULL);
1156     gtk_window_set_title(GTK_WINDOW(mw.win), __NAME__);
1157
1158     mw.notebook = gtk_notebook_new();
1159     gtk_notebook_set_scrollable(GTK_NOTEBOOK(mw.notebook), TRUE);
1160     gtk_notebook_set_tab_pos(GTK_NOTEBOOK(mw.notebook), tab_pos);
1161     gtk_container_add(GTK_CONTAINER(mw.win), mw.notebook);
1162     g_signal_connect(G_OBJECT(mw.notebook), "switch-page",
1163                      G_CALLBACK(mainwindow_title_before), NULL);
1164 }
1165
1166 void
1167 mainwindow_title_before(GtkNotebook *nb, GtkWidget *p, guint idx, gpointer data)
1168 {
1169     mainwindow_title(idx);
1170 }
1171
1172 /* XXX I'd like to avoid traversing the widget hierarchy. Find a better
1173  * way. */
1174 void
1175 mainwindow_title(gint idx)
1176 {
1177     GtkWidget *child, *tabbox, *evbox, *label;
1178     GList *tabbox_children, *last;
1179     const gchar *text;
1180
1181     if (idx == -1)
1182     {
1183         idx = gtk_notebook_get_current_page(GTK_NOTEBOOK(mw.notebook));
1184         if (idx == -1)
1185             return;
1186     }
1187
1188     child = gtk_notebook_get_nth_page(GTK_NOTEBOOK(mw.notebook), idx);
1189     if (child == NULL)
1190         return;
1191
1192     evbox = gtk_notebook_get_tab_label(GTK_NOTEBOOK(mw.notebook), child);
1193     tabbox = gtk_bin_get_child(GTK_BIN(evbox));
1194     tabbox_children = gtk_container_get_children(GTK_CONTAINER(tabbox));
1195     last = g_list_last(tabbox_children);
1196     label = last->data;
1197     text = gtk_label_get_text(GTK_LABEL(label));
1198     gtk_window_set_title(GTK_WINDOW(mw.win), text);
1199     g_list_free(tabbox_children);
1200 }
1201
1202 gboolean
1203 menu_web_view(WebKitWebView *web_view, WebKitContextMenu *menu, GdkEvent *ev,
1204               WebKitHitTestResult *ht, gpointer data)
1205 {
1206     struct Client *c = (struct Client *)data;
1207     GSimpleAction *action = NULL;
1208     WebKitContextMenuItem *mi = NULL;
1209     const gchar *uri = NULL;
1210
1211     (void)ev;
1212
1213     if (webkit_hit_test_result_context_is_link(ht))
1214         uri = webkit_hit_test_result_get_link_uri(ht);
1215     else if (webkit_hit_test_result_context_is_image(ht))
1216         uri = webkit_hit_test_result_get_image_uri(ht);
1217     else if (webkit_hit_test_result_context_is_media(ht))
1218         uri = webkit_hit_test_result_get_media_uri(ht);
1219
1220     if (uri != NULL)
1221     {
1222         webkit_context_menu_append(menu, webkit_context_menu_item_new_separator());
1223
1224         if (c->external_handler_uri != NULL)
1225             g_free(c->external_handler_uri);
1226         c->external_handler_uri = g_strdup(uri);
1227         action = g_simple_action_new("external_handler", NULL);
1228         g_signal_connect(G_OBJECT(action), "activate",
1229                          G_CALLBACK(external_handler_run), data);
1230         mi = webkit_context_menu_item_new_from_gaction(G_ACTION(action),
1231                                                        "Open with external handler",
1232                                                        NULL);
1233         webkit_context_menu_append(menu, mi);
1234         g_object_unref(action);
1235     }
1236
1237     /* FALSE = Show the menu. (TRUE = Don't ever show it.) */
1238     return FALSE;
1239 }
1240
1241 gboolean
1242 quit_if_nothing_active(void)
1243 {
1244     if (clients == 0)
1245     {
1246         if (downloads == 0)
1247         {
1248             gtk_main_quit();
1249             return TRUE;
1250         }
1251         else
1252             gtk_widget_show_all(dm.win);
1253     }
1254
1255     return FALSE;
1256 }
1257
1258 gboolean
1259 remote_msg(GIOChannel *channel, GIOCondition condition, gpointer data)
1260 {
1261     gchar *uri = NULL;
1262
1263     g_io_channel_read_line(channel, &uri, NULL, NULL, NULL);
1264     if (uri)
1265     {
1266         g_strstrip(uri);
1267         client_new(uri, NULL, TRUE, TRUE);
1268         g_free(uri);
1269     }
1270     return TRUE;
1271 }
1272
1273 void
1274 run_user_scripts(WebKitWebView *web_view)
1275 {
1276     gchar *base = NULL, *path = NULL, *contents = NULL;
1277     const gchar *entry = NULL;
1278     GDir *scriptdir = NULL;
1279
1280     base = g_build_filename(g_get_user_config_dir(), __NAME__, "user-scripts", NULL);
1281     scriptdir = g_dir_open(base, 0, NULL);
1282     if (scriptdir != NULL)
1283     {
1284         while ((entry = g_dir_read_name(scriptdir)) != NULL)
1285         {
1286             path = g_build_filename(base, entry, NULL);
1287             if (g_str_has_suffix(path, ".js"))
1288             {
1289                 if (g_file_get_contents(path, &contents, NULL, NULL))
1290                 {
1291                     webkit_web_view_run_javascript(web_view, contents, NULL, NULL, NULL);
1292                     g_free(contents);
1293                 }
1294             }
1295             g_free(path);
1296         }
1297         g_dir_close(scriptdir);
1298     }
1299
1300     g_free(base);
1301 }
1302
1303 void
1304 search(gpointer data, gint direction)
1305 {
1306     struct Client *c = (struct Client *)data;
1307     WebKitWebView *web_view = WEBKIT_WEB_VIEW(c->web_view);
1308     WebKitFindController *fc = webkit_web_view_get_find_controller(web_view);
1309
1310     if (search_text == NULL)
1311         return;
1312
1313     switch (direction)
1314     {
1315         case 0:
1316             webkit_find_controller_search(fc, search_text,
1317                                           WEBKIT_FIND_OPTIONS_CASE_INSENSITIVE |
1318                                           WEBKIT_FIND_OPTIONS_WRAP_AROUND,
1319                                           G_MAXUINT);
1320             break;
1321         case 1:
1322             webkit_find_controller_search_next(fc);
1323             break;
1324         case -1:
1325             webkit_find_controller_search_previous(fc);
1326             break;
1327     }
1328 }
1329
1330 void
1331 show_web_view(WebKitWebView *web_view, gpointer data)
1332 {
1333     struct Client *c = (struct Client *)data;
1334     gint idx;
1335
1336     (void)web_view;
1337
1338     gtk_widget_show_all(mw.win);
1339
1340     if (c->focus_new_tab)
1341     {
1342         idx = gtk_notebook_page_num(GTK_NOTEBOOK(mw.notebook), c->vbox);
1343         if (idx != -1)
1344             gtk_notebook_set_current_page(GTK_NOTEBOOK(mw.notebook), idx);
1345
1346         gtk_widget_grab_focus(c->web_view);
1347     }
1348 }
1349
1350 void
1351 trust_user_certs(WebKitWebContext *wc)
1352 {
1353     GTlsCertificate *cert;
1354     const gchar *basedir, *file, *absfile;
1355     GDir *dir;
1356
1357     basedir = g_build_filename(g_get_user_config_dir(), __NAME__, "certs", NULL);
1358     dir = g_dir_open(basedir, 0, NULL);
1359     if (dir != NULL)
1360     {
1361         file = g_dir_read_name(dir);
1362         while (file != NULL)
1363         {
1364             absfile = g_build_filename(g_get_user_config_dir(), __NAME__, "certs",
1365                                        file, NULL);
1366             cert = g_tls_certificate_new_from_file(absfile, NULL);
1367             if (cert == NULL)
1368                 fprintf(stderr, __NAME__": Could not load trusted cert '%s'\n", file);
1369             else
1370                 webkit_web_context_allow_tls_certificate_for_host(wc, cert, file);
1371             file = g_dir_read_name(dir);
1372         }
1373         g_dir_close(dir);
1374     }
1375 }
1376
1377
1378 int
1379 main(int argc, char **argv)
1380 {
1381     gchar *c;
1382     int opt, i;
1383
1384     gtk_init(&argc, &argv);
1385     webkit_web_context_set_process_model(webkit_web_context_get_default(),
1386         WEBKIT_PROCESS_MODEL_MULTIPLE_SECONDARY_PROCESSES);
1387
1388     grab_environment_configuration();
1389
1390     while ((opt = getopt(argc, argv, "C")) != -1)
1391     {
1392         switch (opt)
1393         {
1394             case 'C':
1395                 cooperative_instances = FALSE;
1396                 break;
1397             default:
1398                 fprintf(stderr, "Usage: "__NAME__" [OPTION]... [URI]...\n");
1399                 exit(EXIT_FAILURE);
1400         }
1401     }
1402
1403     keywords_load();
1404     if (cooperative_instances)
1405         cooperation_setup();
1406     downloadmanager_setup();
1407
1408     mainwindow_setup();
1409
1410     if (!cooperative_instances || cooperative_alone)
1411     {
1412         c = g_build_filename(g_get_user_config_dir(), __NAME__, "web_extensions",
1413                              NULL);
1414         webkit_web_context_set_web_extensions_directory(
1415             webkit_web_context_get_default(), c
1416         );
1417     }
1418
1419     if (optind >= argc)
1420         client_new(home_uri, NULL, TRUE, TRUE);
1421     else
1422     {
1423         for (i = optind; i < argc; i++)
1424             client_new(argv[i], NULL, TRUE, TRUE);
1425     }
1426
1427     if (!cooperative_instances || cooperative_alone)
1428         gtk_main();
1429     exit(EXIT_SUCCESS);
1430 }