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