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