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_SMALL_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_should, h_should;
 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             w_should = 16 * gtk_widget_get_scale_factor(c->tabicon);
 428             h_should = 16 * gtk_widget_get_scale_factor(c->tabicon);
 429             pb_scaled = gdk_pixbuf_scale_simple(pb, w_should, h_should,
 430                                                 GDK_INTERP_BILINEAR);
 431             gtk_image_set_from_pixbuf(GTK_IMAGE(c->tabicon), pb_scaled);
 432
 433             g_object_unref(pb_scaled);
 434             g_object_unref(pb);
 435         }
 436     }
 437 }
 438
 439 void
 440 changed_title(GObject *obj, GParamSpec *pspec, gpointer data)
 441 {
 442     const gchar *t, *u;
 443     struct Client *c = (struct Client *)data;
 444
 445     u = webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view));
 446     t = webkit_web_view_get_title(WEBKIT_WEB_VIEW(c->web_view));
 447
 448     u = u == NULL ? __NAME__ : u;
 449     u = u[0] == 0 ? __NAME__ : u;
 450
 451     t = t == NULL ? u : t;
 452     t = t[0] == 0 ? u : t;
 453
 454     gtk_label_set_text(GTK_LABEL(c->tablabel), t);
 455     mainwindow_title(-1);
 456 }
 457
 458 void
 459 changed_uri(GObject *obj, GParamSpec *pspec, gpointer data)
 460 {
 461     const gchar *t;
 462     struct Client *c = (struct Client *)data;
 463     FILE *fp;
 464
 465     t = webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view));
 466
 467     /* When a web process crashes, we get a "notify::uri" signal, but we
 468      * can no longer read a meaningful URI. It's just an empty string
 469      * now. Not updating the location bar in this scenario is important,
 470      * because we would override the "WEB PROCESS CRASHED" message. */
 471     if (t != NULL && strlen(t) > 0)
 472     {
 473         gtk_entry_set_text(GTK_ENTRY(c->location), t);
 474
 475         if (history_file != NULL)
 476         {
 477             fp = fopen(history_file, "a");
 478             if (fp != NULL)
 479             {
 480                 fprintf(fp, "%s\n", t);
 481                 fclose(fp);
 482             }
 483             else
 484                 perror(__NAME__": Error opening history file");
 485         }
 486     }
 487 }
 488
 489 gboolean
 490 crashed_web_view(WebKitWebView *web_view, gpointer data)
 491 {
 492     gchar *t;
 493     struct Client *c = (struct Client *)data;
 494
 495     t = g_strdup_printf("WEB PROCESS CRASHED: %s",
 496                         webkit_web_view_get_uri(WEBKIT_WEB_VIEW(web_view)));
 497     gtk_entry_set_text(GTK_ENTRY(c->location), t);
 498     g_free(t);
 499
 500     return TRUE;
 501 }
 502
 503 gboolean
 504 decide_policy(WebKitWebView *web_view, WebKitPolicyDecision *decision,
 505               WebKitPolicyDecisionType type, gpointer data)
 506 {
 507     WebKitResponsePolicyDecision *r;
 508
 509     switch (type)
 510     {
 511         case WEBKIT_POLICY_DECISION_TYPE_RESPONSE:
 512             r = WEBKIT_RESPONSE_POLICY_DECISION(decision);
 513             if (!webkit_response_policy_decision_is_mime_type_supported(r))
 514                 webkit_policy_decision_download(decision);
 515             else
 516                 webkit_policy_decision_use(decision);
 517             break;
 518         default:
 519             /* Use whatever default there is. */
 520             return FALSE;
 521     }
 522     return TRUE;
 523 }
 524
 525 void
 526 download_handle_finished(WebKitDownload *download, gpointer data)
 527 {
 528     downloads--;
 529 }
 530
 531 void
 532 download_handle_start(WebKitWebView *web_view, WebKitDownload *download,
 533                       gpointer data)
 534 {
 535     g_signal_connect(G_OBJECT(download), "decide-destination",
 536                      G_CALLBACK(download_handle), data);
 537 }
 538
 539 gboolean
 540 download_handle(WebKitDownload *download, gchar *suggested_filename, gpointer data)
 541 {
 542     gchar *sug_clean, *path, *path2 = NULL, *uri;
 543     GtkToolItem *tb;
 544     int suffix = 1;
 545     size_t i;
 546
 547     sug_clean = g_strdup(suggested_filename);
 548     for (i = 0; i < strlen(sug_clean); i++)
 549         if (sug_clean[i] == G_DIR_SEPARATOR)
 550             sug_clean[i] = '_';
 551
 552     path = g_build_filename(download_dir, sug_clean, NULL);
 553     path2 = g_strdup(path);
 554     while (g_file_test(path2, G_FILE_TEST_EXISTS) && suffix < 1000)
 555     {
 556         g_free(path2);
 557
 558         path2 = g_strdup_printf("%s.%d", path, suffix);
 559         suffix++;
 560     }
 561
 562     if (suffix == 1000)
 563     {
 564         fprintf(stderr, __NAME__": Suffix reached limit for download.\n");
 565         webkit_download_cancel(download);
 566     }
 567     else
 568     {
 569         uri = g_filename_to_uri(path2, NULL, NULL);
 570         webkit_download_set_destination(download, uri);
 571         g_free(uri);
 572
 573         tb = gtk_tool_button_new(NULL, NULL);
 574         gtk_tool_button_set_icon_name(GTK_TOOL_BUTTON(tb), "gtk-delete");
 575         gtk_tool_button_set_label(GTK_TOOL_BUTTON(tb), sug_clean);
 576         gtk_toolbar_insert(GTK_TOOLBAR(dm.toolbar), tb, 0);
 577         gtk_widget_show_all(dm.win);
 578
 579         g_signal_connect(G_OBJECT(download), "notify::estimated-progress",
 580                          G_CALLBACK(changed_download_progress), tb);
 581
 582         downloads++;
 583         g_signal_connect(G_OBJECT(download), "finished",
 584                          G_CALLBACK(download_handle_finished), NULL);
 585
 586         g_object_ref(download);
 587         g_signal_connect(G_OBJECT(tb), "clicked",
 588                          G_CALLBACK(downloadmanager_cancel), download);
 589     }
 590
 591     g_free(sug_clean);
 592     g_free(path);
 593     g_free(path2);
 594
 595     /* Propagate -- to whom it may concern. */
 596     return FALSE;
 597 }
 598
 599 void
 600 downloadmanager_cancel(GtkToolButton *tb, gpointer data)
 601 {
 602     WebKitDownload *download = WEBKIT_DOWNLOAD(data);
 603
 604     webkit_download_cancel(download);
 605     g_object_unref(download);
 606
 607     gtk_widget_destroy(GTK_WIDGET(tb));
 608 }
 609
 610 gboolean
 611 downloadmanager_delete(GtkWidget *obj, gpointer data)
 612 {
 613     if (!quit_if_nothing_active())
 614         gtk_widget_hide(dm.win);
 615
 616     return TRUE;
 617 }
 618
 619 void
 620 downloadmanager_setup(void)
 621 {
 622     dm.win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 623     gtk_window_set_type_hint(GTK_WINDOW(dm.win), GDK_WINDOW_TYPE_HINT_DIALOG);
 624     gtk_window_set_default_size(GTK_WINDOW(dm.win), 500, 250);
 625     gtk_window_set_title(GTK_WINDOW(dm.win), __NAME__" - Download Manager");
 626     g_signal_connect(G_OBJECT(dm.win), "delete-event",
 627                      G_CALLBACK(downloadmanager_delete), NULL);
 628     g_signal_connect(G_OBJECT(dm.win), "key-press-event",
 629                      G_CALLBACK(key_downloadmanager), NULL);
 630
 631     dm.toolbar = gtk_toolbar_new();
 632     gtk_orientable_set_orientation(GTK_ORIENTABLE(dm.toolbar),
 633                                    GTK_ORIENTATION_VERTICAL);
 634     gtk_toolbar_set_style(GTK_TOOLBAR(dm.toolbar), GTK_TOOLBAR_BOTH_HORIZ);
 635     gtk_toolbar_set_show_arrow(GTK_TOOLBAR(dm.toolbar), FALSE);
 636
 637     dm.scroll = gtk_scrolled_window_new(NULL, NULL);
 638     gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(dm.scroll),
 639                                    GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 640     gtk_container_add(GTK_CONTAINER(dm.scroll), dm.toolbar);
 641
 642     gtk_container_add(GTK_CONTAINER(dm.win), dm.scroll);
 643 }
 644
 645 gchar *
 646 ensure_uri_scheme(const gchar *t)
 647 {
 648     gchar *f, *fabs;
 649
 650     f = g_ascii_strdown(t, -1);
 651     if (!g_str_has_prefix(f, "http:") &&
 652         !g_str_has_prefix(f, "https:") &&
 653         !g_str_has_prefix(f, "file:") &&
 654         !g_str_has_prefix(f, "about:") &&
 655         !g_str_has_prefix(f, "data:"))
 656     {
 657         g_free(f);
 658         fabs = realpath(t, NULL);
 659         if (fabs != NULL)
 660         {
 661             f = g_strdup_printf("file://%s", fabs);
 662             free(fabs);
 663         }
 664         else
 665             f = g_strdup_printf("http://%s", t);
 666         return f;
 667     }
 668     else
 669         return g_strdup(t);
 670 }
 671
 672 void
 673 external_handler_run(GSimpleAction *simple, GVariant *param, gpointer data)
 674 {
 675     struct Client *c = (struct Client *)data;
 676     gchar *argv[] = { "lariza-external-handler", "-u", NULL, NULL };
 677     GPid pid;
 678     GError *err = NULL;
 679
 680     (void)simple;
 681     (void)param;
 682
 683     argv[2] = c->external_handler_uri;
 684     if (!g_spawn_async(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL,
 685                        &pid, &err))
 686     {
 687         fprintf(stderr, __NAME__": Could not launch key handler: %s\n",
 688                 err->message);
 689         g_error_free(err);
 690     }
 691     else
 692         g_spawn_close_pid(pid);
 693 }
 694
 695 void
 696 grab_environment_configuration(void)
 697 {
 698     const gchar *e;
 699
 700     e = g_getenv(__NAME_UPPERCASE__"_ACCEPTED_LANGUAGE");
 701     if (e != NULL)
 702         accepted_language[0] = g_strdup(e);
 703
 704     e = g_getenv(__NAME_UPPERCASE__"_DOWNLOAD_DIR");
 705     if (e != NULL)
 706         download_dir = g_strdup(e);
 707
 708     e = g_getenv(__NAME_UPPERCASE__"_ENABLE_CONSOLE_TO_STDOUT");
 709     if (e != NULL)
 710         enable_console_to_stdout = TRUE;
 711
 712     e = g_getenv(__NAME_UPPERCASE__"_FIFO_SUFFIX");
 713     if (e != NULL)
 714         fifo_suffix = g_strdup(e);
 715
 716     e = g_getenv(__NAME_UPPERCASE__"_HISTORY_FILE");
 717     if (e != NULL)
 718         history_file = g_strdup(e);
 719
 720     e = g_getenv(__NAME_UPPERCASE__"_HOME_URI");
 721     if (e != NULL)
 722         home_uri = g_strdup(e);
 723
 724     e = g_getenv(__NAME_UPPERCASE__"_TAB_POS");
 725     if (e != NULL)
 726     {
 727         if (strcmp(e, "top") == 0)
 728             tab_pos = GTK_POS_TOP;
 729         if (strcmp(e, "right") == 0)
 730             tab_pos = GTK_POS_RIGHT;
 731         if (strcmp(e, "bottom") == 0)
 732             tab_pos = GTK_POS_BOTTOM;
 733         if (strcmp(e, "left") == 0)
 734             tab_pos = GTK_POS_LEFT;
 735     }
 736
 737     e = g_getenv(__NAME_UPPERCASE__"_TAB_WIDTH_CHARS");
 738     if (e != NULL)
 739         tab_width_chars = atoi(e);
 740
 741     e = g_getenv(__NAME_UPPERCASE__"_USER_AGENT");
 742     if (e != NULL)
 743         user_agent = g_strdup(e);
 744
 745     e = g_getenv(__NAME_UPPERCASE__"_ZOOM");
 746     if (e != NULL)
 747         global_zoom = atof(e);
 748 }
 749
 750 void
 751 grab_feeds_finished(GObject *object, GAsyncResult *result, gpointer data)
 752 {
 753     struct Client *c = (struct Client *)data;
 754     WebKitJavascriptResult *js_result;
 755     JSCValue *value;
 756     JSCException *exception;
 757     GError *err = NULL;
 758     gchar *str_value;
 759
 760     g_free(c->feed_html);
 761     c->feed_html = NULL;
 762
 763     /* This was taken almost verbatim from the example in WebKit's
 764      * documentation:
 765      *
 766      * https://webkitgtk.org/reference/webkit2gtk/stable/WebKitWebView.html#webkit-web-view-run-javascript-finish */
 767
 768     js_result = webkit_web_view_run_javascript_finish(WEBKIT_WEB_VIEW(object),
 769                                                       result, &err);
 770     if (!js_result)
 771     {
 772         fprintf(stderr, __NAME__": Error running javascript: %s\n", err->message);
 773         g_error_free(err);
 774         return;
 775     }
 776
 777     value = webkit_javascript_result_get_js_value(js_result);
 778     if (jsc_value_is_string(value))
 779     {
 780         str_value = jsc_value_to_string(value);
 781         exception = jsc_context_get_exception(jsc_value_get_context(value));
 782         if (exception != NULL)
 783         {
 784             fprintf(stderr, __NAME__": Error running javascript: %s\n",
 785                     jsc_exception_get_message(exception));
 786         }
 787         else
 788             c->feed_html = str_value;
 789
 790         gtk_entry_set_icon_from_icon_name(GTK_ENTRY(c->location),
 791                                           GTK_ENTRY_ICON_PRIMARY,
 792                                           "application-rss+xml-symbolic");
 793         gtk_entry_set_icon_activatable(GTK_ENTRY(c->location),
 794                                        GTK_ENTRY_ICON_PRIMARY,
 795                                        TRUE);
 796     }
 797     else
 798     {
 799         gtk_entry_set_icon_from_icon_name(GTK_ENTRY(c->location),
 800                                           GTK_ENTRY_ICON_PRIMARY,
 801                                           NULL);
 802     }
 803
 804     webkit_javascript_result_unref(js_result);
 805 }
 806
 807 void
 808 hover_web_view(WebKitWebView *web_view, WebKitHitTestResult *ht, guint modifiers,
 809                gpointer data)
 810 {
 811     struct Client *c = (struct Client *)data;
 812
 813     if (!gtk_widget_is_focus(c->location))
 814     {
 815         if (webkit_hit_test_result_context_is_link(ht))
 816         {
 817             gtk_entry_set_text(GTK_ENTRY(c->location),
 818                                webkit_hit_test_result_get_link_uri(ht));
 819
 820             if (c->hover_uri != NULL)
 821                 g_free(c->hover_uri);
 822             c->hover_uri = g_strdup(webkit_hit_test_result_get_link_uri(ht));
 823         }
 824         else
 825         {
 826             gtk_entry_set_text(GTK_ENTRY(c->location),
 827                                webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view)));
 828
 829             if (c->hover_uri != NULL)
 830                 g_free(c->hover_uri);
 831             c->hover_uri = NULL;
 832         }
 833     }
 834 }
 835
 836 void
 837 icon_location(GtkEntry *entry, GtkEntryIconPosition icon_pos, GdkEvent *event,
 838               gpointer data)
 839 {
 840     struct Client *c = (struct Client *)data;
 841     gchar *d;
 842     gchar *data_template =
 843         "data:text/html,"
 844         "<!DOCTYPE html>"
 845         "<html>"
 846         "    <head>"
 847         "        <meta charset=\"UTF-8\">"
 848         "        <title>Feeds</title>"
 849         "    </head>"
 850         "    <body>"
 851         "        <p>Feeds found on this page:</p>"
 852         "        <ul>"
 853         "        %s"
 854         "        </ul>"
 855         "    </body>"
 856         "</html>";
 857
 858     if (c->feed_html != NULL)
 859     {
 860         /* What we're actually trying to do is show a simple HTML page
 861          * that lists all the feeds on the current page. The function
 862          * webkit_web_view_load_html() looks like the proper way to do
 863          * that. Sad thing is, it doesn't create a history entry, but
 864          * instead simply replaces the content of the current page. This
 865          * is not what we want.
 866          *
 867          * RFC 2397 [0] defines the data URI scheme [1]. We abuse this
 868          * mechanism to show my custom HTML snippet *and* create a
 869          * history entry.
 870          *
 871          * [0]: https://tools.ietf.org/html/rfc2397
 872          * [1]: https://en.wikipedia.org/wiki/Data_URI_scheme */
 873         d = g_strdup_printf(data_template, c->feed_html);
 874         webkit_web_view_load_uri(WEBKIT_WEB_VIEW(c->web_view), d);
 875         g_free(d);
 876     }
 877 }
 878
 879 gboolean
 880 key_common(GtkWidget *widget, GdkEvent *event, gpointer data)
 881 {
 882     struct Client *c = (struct Client *)data;
 883     WebKitWebContext *wc = webkit_web_view_get_context(WEBKIT_WEB_VIEW(c->web_view));
 884     gchar *f;
 885
 886     if (event->type == GDK_KEY_PRESS)
 887     {
 888         if (((GdkEventKey *)event)->state & GDK_MOD1_MASK)
 889         {
 890             switch (((GdkEventKey *)event)->keyval)
 891             {
 892                 case GDK_KEY_q:  /* close window (left hand) */
 893                     client_destroy(NULL, c);
 894                     return TRUE;
 895                 case GDK_KEY_w:  /* home (left hand) */
 896                     f = ensure_uri_scheme(home_uri);
 897                     webkit_web_view_load_uri(WEBKIT_WEB_VIEW(c->web_view), f);
 898                     g_free(f);
 899                     return TRUE;
 900                 case GDK_KEY_e:  /* new tab (left hand) */
 901                     f = ensure_uri_scheme(home_uri);
 902                     client_new(f, NULL, TRUE);
 903                     g_free(f);
 904                     return TRUE;
 905                 case GDK_KEY_r:  /* reload (left hand) */
 906                     webkit_web_view_reload_bypass_cache(WEBKIT_WEB_VIEW(
 907                                                         c->web_view));
 908                     return TRUE;
 909                 case GDK_KEY_d:  /* download manager (left hand) */
 910                     gtk_widget_show_all(dm.win);
 911                     return TRUE;
 912                 case GDK_KEY_2:  /* search forward (left hand) */
 913                 case GDK_KEY_n:  /* search forward (maybe both hands) */
 914                     search(c, 1);
 915                     return TRUE;
 916                 case GDK_KEY_3:  /* search backward (left hand) */
 917                     search(c, -1);
 918                     return TRUE;
 919                 case GDK_KEY_l:  /* location (BOTH hands) */
 920                     gtk_widget_grab_focus(c->location);
 921                     return TRUE;
 922                 case GDK_KEY_k:  /* initiate search (BOTH hands) */
 923                     gtk_widget_grab_focus(c->location);
 924                     gtk_entry_set_text(GTK_ENTRY(c->location), ":/");
 925                     gtk_editable_set_position(GTK_EDITABLE(c->location), -1);
 926                     return TRUE;
 927                 case GDK_KEY_c:  /* reload trusted certs (left hand) */
 928                     trust_user_certs(wc);
 929                     return TRUE;
 930                 case GDK_KEY_x:  /* launch external handler (left hand) */
 931                     if (c->external_handler_uri != NULL)
 932                         g_free(c->external_handler_uri);
 933                     c->external_handler_uri = g_strdup(
 934                         webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view)));
 935                     external_handler_run(NULL, NULL, c);
 936                     return TRUE;
 937                 case GDK_KEY_a:  /* go one tab to the left (left hand) */
 938                     gtk_notebook_prev_page(GTK_NOTEBOOK(mw.notebook));
 939                     return TRUE;
 940                 case GDK_KEY_s:  /* go one tab to the right (left hand) */
 941                     gtk_notebook_next_page(GTK_NOTEBOOK(mw.notebook));
 942                     return TRUE;
 943             }
 944         }
 945         /* navigate backward (left hand) */
 946         else if (((GdkEventKey *)event)->keyval == GDK_KEY_F2)
 947         {
 948             webkit_web_view_go_back(WEBKIT_WEB_VIEW(c->web_view));
 949             return TRUE;
 950         }
 951         /* navigate forward (left hand) */
 952         else if (((GdkEventKey *)event)->keyval == GDK_KEY_F3)
 953         {
 954             webkit_web_view_go_forward(WEBKIT_WEB_VIEW(c->web_view));
 955             return TRUE;
 956         }
 957     }
 958
 959     return FALSE;
 960 }
 961
 962 gboolean
 963 key_downloadmanager(GtkWidget *widget, GdkEvent *event, gpointer data)
 964 {
 965     if (event->type == GDK_KEY_PRESS)
 966     {
 967         if (((GdkEventKey *)event)->state & GDK_MOD1_MASK)
 968         {
 969             switch (((GdkEventKey *)event)->keyval)
 970             {
 971                 case GDK_KEY_d:  /* close window (left hand) */
 972                 case GDK_KEY_q:
 973                     downloadmanager_delete(dm.win, NULL);
 974                     return TRUE;
 975             }
 976         }
 977     }
 978
 979     return FALSE;
 980 }
 981
 982 gboolean
 983 key_location(GtkWidget *widget, GdkEvent *event, gpointer data)
 984 {
 985     struct Client *c = (struct Client *)data;
 986     const gchar *t;
 987     gchar *f;
 988
 989     if (key_common(widget, event, data))
 990         return TRUE;
 991
 992     if (event->type == GDK_KEY_PRESS)
 993     {
 994         switch (((GdkEventKey *)event)->keyval)
 995         {
 996             case GDK_KEY_KP_Enter:
 997             case GDK_KEY_Return:
 998                 gtk_widget_grab_focus(c->web_view);
 999                 t = gtk_entry_get_text(GTK_ENTRY(c->location));
1000                 if (t != NULL && t[0] == ':' && t[1] == '/')
1001                 {
1002                     if (search_text != NULL)
1003                         g_free(search_text);
1004                     search_text = g_strdup(t + 2);
1005                     search(c, 0);
1006                 }
1007                 else if (!keywords_try_search(WEBKIT_WEB_VIEW(c->web_view), t))
1008                 {
1009                     f = ensure_uri_scheme(t);
1010                     webkit_web_view_load_uri(WEBKIT_WEB_VIEW(c->web_view), f);
1011                     g_free(f);
1012                 }
1013                 return TRUE;
1014             case GDK_KEY_Escape:
1015                 t = webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view));
1016                 gtk_entry_set_text(GTK_ENTRY(c->location),
1017                                    (t == NULL ? __NAME__ : t));
1018                 return TRUE;
1019         }
1020     }
1021
1022     return FALSE;
1023 }
1024
1025 gboolean
1026 key_web_view(GtkWidget *widget, GdkEvent *event, gpointer data)
1027 {
1028     struct Client *c = (struct Client *)data;
1029     gdouble dx, dy;
1030     gfloat z;
1031
1032     if (key_common(widget, event, data))
1033         return TRUE;
1034
1035     if (event->type == GDK_KEY_PRESS)
1036     {
1037         if (((GdkEventKey *)event)->keyval == GDK_KEY_Escape)
1038         {
1039             webkit_web_view_stop_loading(WEBKIT_WEB_VIEW(c->web_view));
1040             gtk_entry_set_progress_fraction(GTK_ENTRY(c->location), 0);
1041         }
1042     }
1043     else if (event->type == GDK_BUTTON_RELEASE)
1044     {
1045         switch (((GdkEventButton *)event)->button)
1046         {
1047             case 2:
1048                 if (c->hover_uri != NULL)
1049                 {
1050                     client_new(c->hover_uri, NULL, TRUE);
1051                     return TRUE;
1052                 }
1053                 break;
1054             case 8:
1055                 webkit_web_view_go_back(WEBKIT_WEB_VIEW(c->web_view));
1056                 return TRUE;
1057             case 9:
1058                 webkit_web_view_go_forward(WEBKIT_WEB_VIEW(c->web_view));
1059                 return TRUE;
1060         }
1061     }
1062     else if (event->type == GDK_SCROLL)
1063     {
1064         if (((GdkEventScroll *)event)->state & GDK_MOD1_MASK ||
1065             ((GdkEventScroll *)event)->state & GDK_CONTROL_MASK)
1066         {
1067             gdk_event_get_scroll_deltas(event, &dx, &dy);
1068             z = webkit_web_view_get_zoom_level(WEBKIT_WEB_VIEW(c->web_view));
1069             z += -dy * 0.1;
1070             z = dx != 0 ? global_zoom : z;
1071             webkit_web_view_set_zoom_level(WEBKIT_WEB_VIEW(c->web_view), z);
1072             return TRUE;
1073         }
1074     }
1075
1076     return FALSE;
1077 }
1078
1079 void
1080 keywords_load(void)
1081 {
1082     GError *err = NULL;
1083     GIOChannel *channel = NULL;
1084     gchar *path = NULL, *buf = NULL;
1085     gchar **tokens = NULL;
1086
1087     keywords = g_hash_table_new(g_str_hash, g_str_equal);
1088
1089     path = g_build_filename(g_get_user_config_dir(), __NAME__, "keywordsearch",
1090                             NULL);
1091     channel = g_io_channel_new_file(path, "r", &err);
1092     if (channel != NULL)
1093     {
1094         while (g_io_channel_read_line(channel, &buf, NULL, NULL, NULL)
1095                == G_IO_STATUS_NORMAL)
1096         {
1097             g_strstrip(buf);
1098             if (buf[0] != '#')
1099             {
1100                 tokens = g_strsplit(buf, " ", 2);
1101                 if (tokens[0] != NULL && tokens[1] != NULL)
1102                     g_hash_table_insert(keywords, g_strdup(tokens[0]),
1103                                         g_strdup(tokens[1]));
1104                 g_strfreev(tokens);
1105             }
1106             g_free(buf);
1107         }
1108         g_io_channel_shutdown(channel, FALSE, NULL);
1109     }
1110     g_free(path);
1111 }
1112
1113 gboolean
1114 keywords_try_search(WebKitWebView *web_view, const gchar *t)
1115 {
1116     gboolean ret = FALSE;
1117     gchar **tokens = NULL;
1118     gchar *val = NULL, *escaped = NULL, *uri = NULL;
1119
1120     tokens = g_strsplit(t, " ", 2);
1121     if (tokens[0] != NULL && tokens[1] != NULL)
1122     {
1123         val = g_hash_table_lookup(keywords, tokens[0]);
1124         if (val != NULL)
1125         {
1126             escaped = g_uri_escape_string(tokens[1], NULL, TRUE);
1127             uri = g_strdup_printf((gchar *)val, escaped);
1128             webkit_web_view_load_uri(web_view, uri);
1129             g_free(uri);
1130             g_free(escaped);
1131             ret = TRUE;
1132         }
1133     }
1134     g_strfreev(tokens);
1135
1136     return ret;
1137 }
1138
1139 void
1140 mainwindow_setup(void)
1141 {
1142     mw.win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
1143     gtk_window_set_default_size(GTK_WINDOW(mw.win), 800, 600);
1144     g_signal_connect(G_OBJECT(mw.win), "destroy", gtk_main_quit, NULL);
1145     gtk_window_set_title(GTK_WINDOW(mw.win), __NAME__);
1146
1147     mw.notebook = gtk_notebook_new();
1148     gtk_notebook_set_scrollable(GTK_NOTEBOOK(mw.notebook), TRUE);
1149     gtk_notebook_set_tab_pos(GTK_NOTEBOOK(mw.notebook), tab_pos);
1150     gtk_container_add(GTK_CONTAINER(mw.win), mw.notebook);
1151     g_signal_connect(G_OBJECT(mw.notebook), "switch-page",
1152                      G_CALLBACK(mainwindow_title_before), NULL);
1153 }
1154
1155 void
1156 mainwindow_title_before(GtkNotebook *nb, GtkWidget *p, guint idx, gpointer data)
1157 {
1158     mainwindow_title(idx);
1159 }
1160
1161 void
1162 mainwindow_title(gint idx)
1163 {
1164     GtkWidget *child, *tabbox, *evbox, *label;
1165     GList *tabbox_children, *last;
1166     const gchar *text;
1167
1168     if (idx == -1)
1169     {
1170         idx = gtk_notebook_get_current_page(GTK_NOTEBOOK(mw.notebook));
1171         if (idx == -1)
1172             return;
1173     }
1174
1175     child = gtk_notebook_get_nth_page(GTK_NOTEBOOK(mw.notebook), idx);
1176     if (child == NULL)
1177         return;
1178
1179     evbox = gtk_notebook_get_tab_label(GTK_NOTEBOOK(mw.notebook), child);
1180     tabbox = gtk_bin_get_child(GTK_BIN(evbox));
1181     tabbox_children = gtk_container_get_children(GTK_CONTAINER(tabbox));
1182     last = g_list_last(tabbox_children);
1183     label = last->data;
1184     text = gtk_label_get_text(GTK_LABEL(label));
1185     gtk_window_set_title(GTK_WINDOW(mw.win), text);
1186     g_list_free(tabbox_children);
1187 }
1188
1189 gboolean
1190 menu_web_view(WebKitWebView *web_view, WebKitContextMenu *menu, GdkEvent *ev,
1191               WebKitHitTestResult *ht, gpointer data)
1192 {
1193     struct Client *c = (struct Client *)data;
1194     GSimpleAction *action = NULL;
1195     WebKitContextMenuItem *mi = NULL;
1196     const gchar *uri = NULL;
1197
1198     (void)ev;
1199
1200     if (webkit_hit_test_result_context_is_link(ht))
1201         uri = webkit_hit_test_result_get_link_uri(ht);
1202     else if (webkit_hit_test_result_context_is_image(ht))
1203         uri = webkit_hit_test_result_get_image_uri(ht);
1204     else if (webkit_hit_test_result_context_is_media(ht))
1205         uri = webkit_hit_test_result_get_media_uri(ht);
1206
1207     if (uri != NULL)
1208     {
1209         webkit_context_menu_append(menu, webkit_context_menu_item_new_separator());
1210
1211         if (c->external_handler_uri != NULL)
1212             g_free(c->external_handler_uri);
1213         c->external_handler_uri = g_strdup(uri);
1214         action = g_simple_action_new("external_handler", NULL);
1215         g_signal_connect(G_OBJECT(action), "activate",
1216                          G_CALLBACK(external_handler_run), data);
1217         mi = webkit_context_menu_item_new_from_gaction(G_ACTION(action),
1218                                                        "Open with external handler",
1219                                                        NULL);
1220         webkit_context_menu_append(menu, mi);
1221         g_object_unref(action);
1222     }
1223
1224     /* FALSE = Show the menu. (TRUE = Don't ever show it.) */
1225     return FALSE;
1226 }
1227
1228 gboolean
1229 quit_if_nothing_active(void)
1230 {
1231     if (clients == 0)
1232     {
1233         if (downloads == 0)
1234         {
1235             gtk_main_quit();
1236             return TRUE;
1237         }
1238         else
1239             gtk_widget_show_all(dm.win);
1240     }
1241
1242     return FALSE;
1243 }
1244
1245 gboolean
1246 remote_msg(GIOChannel *channel, GIOCondition condition, gpointer data)
1247 {
1248     gchar *uri = NULL;
1249
1250     g_io_channel_read_line(channel, &uri, NULL, NULL, NULL);
1251     if (uri)
1252     {
1253         g_strstrip(uri);
1254         client_new(uri, NULL, TRUE);
1255         g_free(uri);
1256     }
1257     return TRUE;
1258 }
1259
1260 void
1261 run_user_scripts(WebKitWebView *web_view)
1262 {
1263     gchar *base = NULL, *path = NULL, *contents = NULL;
1264     const gchar *entry = NULL;
1265     GDir *scriptdir = NULL;
1266
1267     base = g_build_filename(g_get_user_config_dir(), __NAME__, "user-scripts", NULL);
1268     scriptdir = g_dir_open(base, 0, NULL);
1269     if (scriptdir != NULL)
1270     {
1271         while ((entry = g_dir_read_name(scriptdir)) != NULL)
1272         {
1273             path = g_build_filename(base, entry, NULL);
1274             if (g_str_has_suffix(path, ".js"))
1275             {
1276                 if (g_file_get_contents(path, &contents, NULL, NULL))
1277                 {
1278                     webkit_web_view_run_javascript(web_view, contents, NULL, NULL, NULL);
1279                     g_free(contents);
1280                 }
1281             }
1282             g_free(path);
1283         }
1284         g_dir_close(scriptdir);
1285     }
1286
1287     g_free(base);
1288 }
1289
1290 void
1291 search(gpointer data, gint direction)
1292 {
1293     struct Client *c = (struct Client *)data;
1294     WebKitWebView *web_view = WEBKIT_WEB_VIEW(c->web_view);
1295     WebKitFindController *fc = webkit_web_view_get_find_controller(web_view);
1296
1297     if (search_text == NULL)
1298         return;
1299
1300     switch (direction)
1301     {
1302         case 0:
1303             webkit_find_controller_search(fc, search_text,
1304                                           WEBKIT_FIND_OPTIONS_CASE_INSENSITIVE |
1305                                           WEBKIT_FIND_OPTIONS_WRAP_AROUND,
1306                                           G_MAXUINT);
1307             break;
1308         case 1:
1309             webkit_find_controller_search_next(fc);
1310             break;
1311         case -1:
1312             webkit_find_controller_search_previous(fc);
1313             break;
1314     }
1315 }
1316
1317 void
1318 show_web_view(WebKitWebView *web_view, gpointer data)
1319 {
1320     struct Client *c = (struct Client *)data;
1321     gint idx;
1322
1323     (void)web_view;
1324
1325     gtk_widget_show_all(mw.win);
1326
1327     idx = gtk_notebook_page_num(GTK_NOTEBOOK(mw.notebook), c->vbox);
1328     if (idx != -1)
1329         gtk_notebook_set_current_page(GTK_NOTEBOOK(mw.notebook), idx);
1330
1331     gtk_widget_grab_focus(c->web_view);
1332 }
1333
1334 void
1335 trust_user_certs(WebKitWebContext *wc)
1336 {
1337     GTlsCertificate *cert;
1338     const gchar *basedir, *file, *absfile;
1339     GDir *dir;
1340
1341     basedir = g_build_filename(g_get_user_config_dir(), __NAME__, "certs", NULL);
1342     dir = g_dir_open(basedir, 0, NULL);
1343     if (dir != NULL)
1344     {
1345         file = g_dir_read_name(dir);
1346         while (file != NULL)
1347         {
1348             absfile = g_build_filename(g_get_user_config_dir(), __NAME__, "certs",
1349                                        file, NULL);
1350             cert = g_tls_certificate_new_from_file(absfile, NULL);
1351             if (cert == NULL)
1352                 fprintf(stderr, __NAME__": Could not load trusted cert '%s'\n", file);
1353             else
1354                 webkit_web_context_allow_tls_certificate_for_host(wc, cert, file);
1355             file = g_dir_read_name(dir);
1356         }
1357         g_dir_close(dir);
1358     }
1359 }
1360
1361
1362 int
1363 main(int argc, char **argv)
1364 {
1365     gchar *c;
1366     int opt, i;
1367
1368     gtk_init(&argc, &argv);
1369     webkit_web_context_set_process_model(webkit_web_context_get_default(),
1370         WEBKIT_PROCESS_MODEL_MULTIPLE_SECONDARY_PROCESSES);
1371
1372     grab_environment_configuration();
1373
1374     while ((opt = getopt(argc, argv, "C")) != -1)
1375     {
1376         switch (opt)
1377         {
1378             case 'C':
1379                 cooperative_instances = FALSE;
1380                 break;
1381             default:
1382                 fprintf(stderr, "Usage: "__NAME__" [OPTION]... [URI]...\n");
1383                 exit(EXIT_FAILURE);
1384         }
1385     }
1386
1387     keywords_load();
1388     if (cooperative_instances)
1389         cooperation_setup();
1390     downloadmanager_setup();
1391
1392     mainwindow_setup();
1393
1394     if (!cooperative_instances || cooperative_alone)
1395     {
1396         c = g_build_filename(g_get_user_config_dir(), __NAME__, "web_extensions",
1397                              NULL);
1398         webkit_web_context_set_web_extensions_directory(
1399             webkit_web_context_get_default(), c
1400         );
1401     }
1402
1403     if (optind >= argc)
1404         client_new(home_uri, NULL, TRUE);
1405     else
1406     {
1407         for (i = optind; i < argc; i++)
1408             client_new(argv[i], NULL, TRUE);
1409     }
1410
1411     if (!cooperative_instances || cooperative_alone)
1412         gtk_main();
1413     exit(EXIT_SUCCESS);
1414 }