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browser.c
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// Standard C libraries
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// POSIX system headers
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
// GTK and related libraries
#include <gtk/gtk.h>
#include <gtk/gtkx.h>
#include <gdk/gdkkeysyms.h>
#include <gio/gio.h>
// WebKit and JavaScript libraries
#include <webkit2/webkit2.h>
#include <JavaScriptCore/JavaScript.h>
// Cleanup cache and Connection
#include <sys/resource.h>
// Local configuration
#include "config.h"
// Client Management
void client_destroy(GtkWidget *, gpointer);
WebKitWebView *client_new(const gchar *, WebKitWebView *, gboolean, gboolean);
WebKitWebView *client_new_request(WebKitWebView *, WebKitNavigationAction *, gpointer);
// UI and Window Management
void mainwindow_setup(void);
void mainwindow_title(gint);
void notebook_switch_page(GtkNotebook *, GtkWidget *, guint, gpointer);
void downloadmanager_setup(void);
gboolean downloadmanager_delete(GtkWidget *, gpointer);
void preload_resources(void);
// Event Handlers
gboolean key_common(GtkWidget *, GdkEvent *, gpointer);
gboolean key_downloadmanager(GtkWidget *, GdkEvent *, gpointer);
gboolean key_location(GtkWidget *, GdkEvent *, gpointer);
gboolean key_tablabel(GtkWidget *, GdkEvent *, gpointer);
gboolean key_web_view(GtkWidget *, GdkEvent *, gpointer);
void hover_web_view(WebKitWebView *, WebKitHitTestResult *, guint, gpointer);
void icon_location(GtkEntry *, GtkEntryIconPosition, GdkEvent *, gpointer);
gboolean cleanup_resources(gpointer user_data);
// WebKit Callbacks
void changed_download_progress(GObject *, GParamSpec *, gpointer);
void changed_load_progress(GObject *, GParamSpec *, gpointer);
void changed_favicon(GObject *, GParamSpec *, gpointer);
void changed_title(GObject *, GParamSpec *, gpointer);
void changed_uri(GObject *, GParamSpec *, gpointer);
gboolean crashed_web_view(WebKitWebView *, gpointer);
gboolean decide_policy(WebKitWebView *, WebKitPolicyDecision *, WebKitPolicyDecisionType, gpointer);
void web_view_load_changed(WebKitWebView *web_view, WebKitLoadEvent load_event, gpointer user_data);
// Download Handling
gboolean download_handle(WebKitDownload *, gchar *, gpointer);
void download_handle_start(WebKitWebView *, WebKitDownload *, gpointer);
void downloadmanager_cancel(GtkToolButton *, gpointer);
// Navigation and Tab Management
gboolean goto_tab(struct Client *c, const gchar *arg);
void search(gpointer, gint);
// Initialization and Configuration
void cooperation_setup(void);
void grab_environment_configuration(void);
void init_default_web_context(void);
void trust_user_certs(WebKitWebContext *);
// Utility Functions
gchar *ensure_uri_scheme(const gchar *);
void grab_feeds_finished(GObject *, GAsyncResult *, gpointer);
void inject_hints_script(WebKitWebView *web_view);
gboolean quit_if_nothing_active(void);
gboolean remote_msg(GIOChannel *, GIOCondition, gpointer);
void run_user_scripts(WebKitWebView *);
void show_web_view(WebKitWebView *, gpointer);
ssize_t write_full(int, char *, size_t);
// Reopen Closed Tab Stuff
#define MAX_CLOSED_TABS 10
GQueue *closed_tabs;
gboolean reopen_closed_tab(struct Client *c, const gchar *arg) {
(void)c;
(void)arg;
if (!g_queue_is_empty(closed_tabs)) {
gchar *uri = g_queue_pop_head(closed_tabs);
if (uri) {
client_new(uri, NULL, TRUE, TRUE);
g_free(uri);
return TRUE;
}
}
return FALSE;
}
// Main Window Structure
struct MainWindow
{
GtkWidget *win; // Main window widget
GtkWidget *notebook; // Notebook widget for tabs
} mw;
// Download Manager Structure
struct DownloadManager
{
GtkWidget *win; // Download manager window widget
GtkWidget *scroll; // Scrolled window widget
GtkWidget *toolbar; // Toolbar widget
} dm;
void
client_destroy(GtkWidget *widget, gpointer data)
{
struct Client *c = (struct Client *)data;
gint idx;
const gchar *uri;
g_signal_handlers_disconnect_by_func(G_OBJECT(c->web_view),
changed_load_progress, c);
idx = gtk_notebook_page_num(GTK_NOTEBOOK(mw.notebook), c->vbox);
if (idx == -1)
fprintf(stderr, NAME": Tab index was -1, bamboozled\n");
else {
// Save the URI of the closed tab
uri = webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view));
if (uri) {
g_queue_push_head(closed_tabs, g_strdup(uri));
if (g_queue_get_length(closed_tabs) > MAX_CLOSED_TABS) {
g_free(g_queue_pop_tail(closed_tabs));
}
}
gtk_notebook_remove_page(GTK_NOTEBOOK(mw.notebook), idx);
}
free(c);
clients--;
quit_if_nothing_active();
}
WebKitWebView *
client_new(const gchar *uri, WebKitWebView *related_wv, gboolean show,
gboolean focus_tab)
{
struct Client *c;
gchar *f;
GtkWidget *evbox, *tabbox;
WebKitWebContext *wc;
WebKitSettings *settings;
if (uri != NULL && cooperative_instances && !cooperative_alone)
{
f = ensure_uri_scheme(uri);
if (write_full(cooperative_pipe_fp, f, strlen(f)) <= 0 ||
write_full(cooperative_pipe_fp, "\n", 1) <= 0)
{
fprintf(stderr, NAME": Could not write command '%s'\n", f);
}
g_free(f);
return NULL;
}
c = g_slice_new0(struct Client);
if (!c)
{
fprintf(stderr, NAME": fatal: memory allocation failed\n");
exit(EXIT_FAILURE);
}
c->focus_new_tab = focus_tab;
if (related_wv == NULL)
c->web_view = GTK_WIDGET(webkit_web_view_new());
else
c->web_view = GTK_WIDGET(webkit_web_view_new_with_related_view(related_wv));
if (accepted_language[0] != NULL)
{
wc = webkit_web_view_get_context(WEBKIT_WEB_VIEW(c->web_view));
webkit_web_context_set_preferred_languages(wc, accepted_language);
}
settings = webkit_web_view_get_settings(WEBKIT_WEB_VIEW(c->web_view));
if (user_agent != NULL) {
webkit_settings_set_user_agent(settings, user_agent);
}
// Apply WebKit settings
webkit_settings_set_enable_javascript(settings, enable_javascript);
webkit_settings_set_auto_load_images(settings, enable_images);
webkit_settings_set_enable_webgl(settings, enable_webgl);
webkit_settings_set_hardware_acceleration_policy(settings,
enable_hardware_acceleration ? WEBKIT_HARDWARE_ACCELERATION_POLICY_ALWAYS : WEBKIT_HARDWARE_ACCELERATION_POLICY_NEVER);
// Apply additional WebKit settings
webkit_settings_set_enable_page_cache(settings, enable_page_cache);
webkit_settings_set_enable_developer_extras(settings, enable_developer_extras);
webkit_settings_set_enable_fullscreen(settings, enable_fullscreen);
webkit_settings_set_enable_dns_prefetching(settings, enable_dns_prefetching);
webkit_settings_set_enable_hyperlink_auditing(settings, enable_hyperlink_auditing);
webkit_settings_set_media_playback_requires_user_gesture(settings, !enable_media_stream);
webkit_settings_set_print_backgrounds(settings, print_backgrounds);
// Font Settings
webkit_settings_set_default_charset(settings, default_charset);
webkit_settings_set_default_font_family(settings, sans_serif_font_family);
webkit_settings_set_serif_font_family(settings, serif_font_family);
webkit_settings_set_monospace_font_family(settings, monospace_font_family);
webkit_settings_set_minimum_font_size(settings, minimum_font_size);
webkit_settings_set_default_font_size(settings, default_font_size);
webkit_settings_set_default_monospace_font_size(settings, default_monospace_font_size);
webkit_settings_set_javascript_can_open_windows_automatically(settings, javascript_can_open_windows);
webkit_settings_set_enable_webrtc(settings, enable_webrtc);
webkit_settings_set_enable_mediasource(settings, enable_mediasource);
webkit_settings_set_enable_javascript_markup(settings, enable_javascript_markup);
webkit_settings_set_enable_resizable_text_areas(settings, enable_resizable_text_areas);
webkit_settings_set_enable_html5_local_storage(settings, enable_html5_local_storage);
// Apply new performance and resource usage settings
webkit_settings_set_enable_site_specific_quirks(settings, enable_site_specific_quirks);
webkit_settings_set_enable_write_console_messages_to_stdout(settings, enable_write_console_messages_to_stdout);
webkit_settings_set_enable_media_capabilities(settings, enable_media_capabilities);
webkit_settings_set_enable_encrypted_media(settings, enable_encrypted_media);
// Set spell checking languages on the WebKit context
WebKitWebContext *context = webkit_web_view_get_context(WEBKIT_WEB_VIEW(c->web_view));
webkit_web_context_set_spell_checking_languages(context, spell_checking_languages);
webkit_web_context_set_spell_checking_enabled(context, enable_spell_checking);
webkit_web_view_set_zoom_level(WEBKIT_WEB_VIEW(c->web_view), global_zoom);
g_signal_connect_after(G_OBJECT(c->web_view), "notify::favicon",
G_CALLBACK(changed_favicon), c);
g_signal_connect_after(G_OBJECT(c->web_view), "notify::title",
G_CALLBACK(changed_title), c);
g_signal_connect(G_OBJECT(c->web_view), "notify::uri",
G_CALLBACK(changed_uri), c);
g_signal_connect(G_OBJECT(c->web_view), "notify::estimated-load-progress",
G_CALLBACK(changed_load_progress), c);
g_signal_connect(G_OBJECT(c->web_view), "create",
G_CALLBACK(client_new_request), NULL);
g_signal_connect(G_OBJECT(c->web_view), "close",
G_CALLBACK(client_destroy), c);
g_signal_connect(G_OBJECT(c->web_view), "decide-policy",
G_CALLBACK(decide_policy), NULL);
g_signal_connect(G_OBJECT(c->web_view), "key-press-event",
G_CALLBACK(key_web_view), c);
g_signal_connect(G_OBJECT(c->web_view), "button-release-event",
G_CALLBACK(key_web_view), c);
g_signal_connect(G_OBJECT(c->web_view), "scroll-event",
G_CALLBACK(key_web_view), c);
g_signal_connect(G_OBJECT(c->web_view), "mouse-target-changed",
G_CALLBACK(hover_web_view), c);
g_signal_connect(G_OBJECT(c->web_view), "web-process-crashed",
G_CALLBACK(crashed_web_view), c);
g_signal_connect(G_OBJECT(c->web_view), "load-changed",
G_CALLBACK(web_view_load_changed), c);
webkit_settings_set_enable_smooth_scrolling(settings, !disable_smooth_scrolling);
c->location = gtk_entry_new();
g_signal_connect(G_OBJECT(c->location), "key-press-event",
G_CALLBACK(key_location), c);
g_signal_connect(G_OBJECT(c->location), "icon-release",
G_CALLBACK(icon_location), c);
gtk_entry_set_icon_from_icon_name(GTK_ENTRY(c->location),
GTK_ENTRY_ICON_PRIMARY,
NULL);
c->vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
gtk_box_pack_start(GTK_BOX(c->vbox), c->location, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(c->vbox), c->web_view, TRUE, TRUE, 0);
gtk_container_set_focus_child(GTK_CONTAINER(c->vbox), c->web_view);
c->tabicon = gtk_image_new_from_icon_name("text-html", GTK_ICON_SIZE_SMALL_TOOLBAR);
c->tablabel = gtk_label_new(NAME);
gtk_label_set_ellipsize(GTK_LABEL(c->tablabel), PANGO_ELLIPSIZE_END);
gtk_label_set_width_chars(GTK_LABEL(c->tablabel), tab_width_chars);
gtk_widget_set_has_tooltip(c->tablabel, !disable_tooltips);
tabbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL,
5 * gtk_widget_get_scale_factor(mw.win));
gtk_box_pack_start(GTK_BOX(tabbox), c->tabicon, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(tabbox), c->tablabel, TRUE, TRUE, 0);
evbox = gtk_event_box_new();
gtk_container_add(GTK_CONTAINER(evbox), tabbox);
g_signal_connect(G_OBJECT(evbox), "button-release-event",
G_CALLBACK(key_tablabel), c);
gtk_widget_add_events(evbox, GDK_SCROLL_MASK);
g_signal_connect(G_OBJECT(evbox), "scroll-event",
G_CALLBACK(key_tablabel), c);
g_object_set_data(G_OBJECT(evbox), "lariza-tab-label", c->tablabel);
gtk_widget_show_all(evbox);
gtk_notebook_insert_page(GTK_NOTEBOOK(mw.notebook), c->vbox, evbox,
gtk_notebook_get_current_page(GTK_NOTEBOOK(mw.notebook)) + 1);
gtk_notebook_set_tab_reorderable(GTK_NOTEBOOK(mw.notebook), c->vbox, TRUE);
if (disable_tab_thumbnails) {
webkit_web_view_set_background_color(WEBKIT_WEB_VIEW(c->web_view), &(GdkRGBA){0, 0, 0, 0});
}
if (show)
show_web_view(NULL, c);
else
g_signal_connect(G_OBJECT(c->web_view), "ready-to-show",
G_CALLBACK(show_web_view), c);
if (uri != NULL)
{
f = ensure_uri_scheme(uri);
webkit_web_view_load_uri(WEBKIT_WEB_VIEW(c->web_view), f);
g_free(f);
}
clients++;
return WEBKIT_WEB_VIEW(c->web_view);
}
WebKitWebView *
client_new_request(WebKitWebView *web_view,
WebKitNavigationAction *navigation_action, gpointer data)
{
return client_new(NULL, web_view, FALSE, FALSE);
}
void
web_view_load_changed(WebKitWebView *web_view, WebKitLoadEvent load_event, gpointer user_data)
{
if (load_event == WEBKIT_LOAD_FINISHED) {
fprintf(stderr, "Page load finished, injecting hints script\n");
inject_hints_script(web_view);
}
}
void inject_hints_script(WebKitWebView *web_view)
{
if (ENABLE_HINTS) {
fprintf(stderr, "Injecting hints script\n");
const char *hints_script =
"// Anonymous function to get private namespace.\n"
"(function() {\n"
" console.log('[hints] Script injected and executing');\n"
"\n"
" var charset = \"sdfghjklertzuivbn\".split(\"\");\n"
" var key_follow = \"f\";\n"
" var key_follow_new_win = \"F\";\n"
"\n"
" function update_highlights_or_abort()\n"
" {\n"
" console.log('[hints] update_highlights_or_abort called');\n"
" var submatch;\n"
" var col_sel, col_unsel;\n"
" var longest_id = 0;\n"
"\n"
" if (document.lariza_hints.state === \"follow_new\")\n"
" {\n"
" col_unsel = \"#DAFFAD\";\n"
" col_sel = \"#FF5D00\";\n"
" }\n"
" else\n"
" {\n"
" col_unsel = \"#A7FFF5\";\n"
" col_sel = \"#33FF00\";\n"
" }\n"
"\n"
" for (var id in document.lariza_hints.labels)\n"
" {\n"
" var label = document.lariza_hints.labels[id];\n"
" var bgcol = col_unsel;\n"
"\n"
" longest_id = Math.max(longest_id, id.length);\n"
"\n"
" if (document.lariza_hints.box.value !== \"\")\n"
" {\n"
" submatch = id.match(\"^\" + document.lariza_hints.box.value);\n"
" if (submatch !== null)\n"
" {\n"
" var href_suffix = \"\";\n"
" var box_shadow_inner = \"#B00000\";\n"
" if (id === document.lariza_hints.box.value)\n"
" {\n"
" bgcol = col_sel;\n"
" box_shadow_inner = \"red\";\n"
" if (label.elem.tagName.toLowerCase() === \"a\")\n"
" href_suffix = \": <span style='font-size: 75%'>\" +\n"
" label.elem.href + \"</span>\";\n"
" }\n"
"\n"
" var len = submatch[0].length;\n"
" label.span.innerHTML = \"<b>\" + submatch[0] + \"</b>\" +\n"
" id.substring(len, id.length) +\n"
" href_suffix;\n"
" label.span.style.visibility = \"visible\";\n"
"\n"
" save_parent_style(label);\n"
" label.elem.style.boxShadow = \"0 0 5pt 2pt black, 0 0 0 2pt \" +\n"
" box_shadow_inner + \" inset\";\n"
" }\n"
" else\n"
" {\n"
" label.span.style.visibility = \"hidden\";\n"
" reset_parent_style(label);\n"
" }\n"
" }\n"
" else\n"
" {\n"
" label.span.style.visibility = \"visible\";\n"
" label.span.innerHTML = id;\n"
" reset_parent_style(label);\n"
" }\n"
" label.span.style.backgroundColor = bgcol;\n"
" }\n"
"\n"
" if (document.lariza_hints.box.value.length > longest_id)\n"
" set_state(\"inactive\");\n"
" }\n"
"\n"
" function open_match()\n"
" {\n"
" console.log('[hints] open_match called');\n"
" var choice = document.lariza_hints.box.value;\n"
" var was_state = document.lariza_hints.state;\n"
"\n"
" var elem = document.lariza_hints.labels[choice].elem;\n"
" set_state(\"inactive\"); /* Nukes labels. */\n"
"\n"
" if (elem)\n"
" {\n"
" var tag_name = elem.tagName.toLowerCase();\n"
" var type = elem.type ? elem.type.toLowerCase() : \"\";\n"
"\n"
" console.log(\"[hints] Selected elem [\" + elem + \"] [\" + tag_name +\n"
" \"] [\" + type + \"]\");\n"
"\n"
" if (was_state === \"follow_new\" && tag_name === \"a\")\n"
" window.open(elem.href);\n"
" else if (\n"
" (\n"
" tag_name === \"input\" &&\n"
" type !== \"button\" &&\n"
" type !== \"color\" &&\n"
" type !== \"checkbox\" &&\n"
" type !== \"file\" &&\n"
" type !== \"radio\" &&\n"
" type !== \"reset\" &&\n"
" type !== \"submit\"\n"
" ) ||\n"
" tag_name === \"textarea\" ||\n"
" tag_name === \"select\"\n"
" )\n"
" elem.focus();\n"
" else\n"
" elem.click();\n"
" }\n"
" }\n"
"\n"
" function set_state(new_state)\n"
" {\n"
" console.log('[hints] set_state called with state: ' + new_state);\n"
" document.lariza_hints.state = new_state;\n"
"\n"
" if (document.lariza_hints.state === \"inactive\")\n"
" {\n"
" nuke_labels();\n"
"\n"
" // Removing our box causes unwanted scrolling. Just hide it.\n"
" document.lariza_hints.box.blur();\n"
" document.lariza_hints.box.value = \"\";\n"
" document.lariza_hints.box.style.visibility = \"hidden\";\n"
" }\n"
" else\n"
" {\n"
" if (document.lariza_hints.labels === null)\n"
" create_labels();\n"
"\n"
" var box = document.lariza_hints.box;\n"
" if (box === null)\n"
" {\n"
" document.lariza_hints.box = document.createElement(\"input\");\n"
" box = document.lariza_hints.box;\n"
"\n"
" box.addEventListener(\"keydown\", on_box_key);\n"
" box.addEventListener(\"input\", on_box_input);\n"
" box.style.opacity = \"0\";\n"
" box.style.position = \"fixed\";\n"
" box.style.left = \"0px\";\n"
" box.style.top = \"0px\";\n"
" box.type = \"text\";\n"
"\n"
" box.setAttribute(\"lariza_input_box\", \"yes\");\n"
"\n"
" document.body.appendChild(box);\n"
" }\n"
"\n"
" box.style.visibility = \"visible\";\n"
" box.focus();\n"
" }\n"
"\n"
" update_highlights_or_abort();\n"
" }\n"
"\n"
" function create_labels()\n"
" {\n"
" console.log('[hints] create_labels called');\n"
" document.lariza_hints.labels = new Object();\n"
"\n"
" var selector = \"a[href]:not([href=''])\";\n"
" if (document.lariza_hints.state !== \"follow_new\")\n"
" {\n"
" selector += \", input:not([type=hidden]):not([lariza_input_box=yes])\";\n"
" selector += \", textarea, select, button\";\n"
" }\n"
"\n"
" var elements = document.body.querySelectorAll(selector);\n"
"\n"
" for (var i = 0; i < elements.length; i++)\n"
" {\n"
" var elem = elements[i];\n"
"\n"
" var label_id = \"\";\n"
" var n = i;\n"
" do\n"
" {\n"
" label_id += charset[n % charset.length];\n"
" n = Math.floor(n / charset.length);\n"
" } while (n !== 0);\n"
"\n"
" var span = document.createElement(\"span\");\n"
" span.style.border = \"black 1pt solid\";\n"
" span.style.color = \"black\";\n"
" span.style.fontFamily = \"monospace\";\n"
" span.style.fontSize = \"10pt\";\n"
" span.style.fontWeight = \"normal\";\n"
" span.style.margin = \"0px 2pt\";\n"
" span.style.position = \"absolute\";\n"
" span.style.textTransform = \"lowercase\";\n"
" span.style.visibility = \"hidden\";\n"
" span.style.zIndex = \"2147483647\";\n"
"\n"
" document.lariza_hints.labels[label_id] = {\n"
" \"elem\": elem,\n"
" \"span\": span,\n"
" \"parent_style\": null,\n"
" };\n"
"\n"
" var tag_name = elem.tagName.toLowerCase();\n"
" if (tag_name === \"a\")\n"
" {\n"
" span.style.borderTopLeftRadius = \"10pt\";\n"
" span.style.borderBottomLeftRadius = \"10pt\";\n"
" span.style.padding = \"0px 2pt 0px 5pt\";\n"
" elem.appendChild(span);\n"
" }\n"
" else\n"
" {\n"
" span.style.borderRadius = \"10pt\";\n"
" span.style.padding = \"0px 5pt\";\n"
" elem.parentNode.insertBefore(span, elem);\n"
" }\n"
"\n"
" console.log(\"[hints] Label ID \" + label_id + \", \" + i +\n"
" \" for elem [\" + elem + \"]\");\n"
" }\n"
" }\n"
"\n"
" function nuke_labels()\n"
" {\n"
" console.log('[hints] nuke_labels called');\n"
" for (var id in document.lariza_hints.labels)\n"
" {\n"
" var label = document.lariza_hints.labels[id];\n"
"\n"
" reset_parent_style(label);\n"
"\n"
" var tag_name = label.elem.tagName.toLowerCase();\n"
" if (tag_name === \"a\")\n"
" label.elem.removeChild(label.span);\n"
" else\n"
" label.elem.parentNode.removeChild(label.span);\n"
" }\n"
"\n"
" document.lariza_hints.labels = null;\n"
" }\n"
"\n"
" function reset_parent_style(label)\n"
" {\n"
" if (label.parent_style !== null)\n"
" label.elem.style.boxShadow = label.parent_style.boxShadow;\n"
" }\n"
"\n"
" function save_parent_style(label)\n"
" {\n"
" if (label.parent_style === null)\n"
" {\n"
" var style = window.getComputedStyle(label.elem);\n"
" label.parent_style = new Object();\n"
" label.parent_style.boxShadow = style.getPropertyValue(\"boxShadow\");\n"
" }\n"
" }\n"
"\n"
" function on_box_input(e)\n"
" {\n"
" update_highlights_or_abort();\n"
" }\n"
"\n"
" function on_box_key(e)\n"
" {\n"
" if (e.key === \"Escape\")\n"
" {\n"
" e.preventDefault();\n"
" e.stopPropagation();\n"
" set_state(\"inactive\");\n"
" }\n"
" else if (e.key === \"Enter\")\n"
" {\n"
" e.preventDefault();\n"
" e.stopPropagation();\n"
" open_match();\n"
" }\n"
" }\n"
"\n"
" function on_window_key(e)\n"
" {\n"
" console.log('[hints] on_window_key called with key: ' + e.key);\n"
" if (e.target.nodeName.toLowerCase() === \"textarea\" ||\n"
" e.target.nodeName.toLowerCase() === \"input\" ||\n"
" document.designMode === \"on\" ||\n"
" e.target.contentEditable === \"true\")\n"
" {\n"
" return;\n"
" }\n"
"\n"
" if (document.lariza_hints.state === \"inactive\")\n"
" {\n"
" if (e.key === key_follow)\n"
" set_state(\"follow\");\n"
" else if (e.key === key_follow_new_win)\n"
" set_state(\"follow_new\");\n"
" }\n"
" }\n"
"\n"
" if (document.lariza_hints === undefined)\n"
" {\n"
" document.lariza_hints = new Object();\n"
" document.lariza_hints.box = null;\n"
" document.lariza_hints.labels = null;\n"
" document.lariza_hints.state = \"inactive\";\n"
"\n"
" document.addEventListener(\"keyup\", on_window_key);\n"
"\n"
" console.log(\"[hints] Initialized.\");\n"
" }\n"
" else\n"
" console.log(\"[hints] ALREADY INSTALLED\");\n"
"\n"
"})();\n"
"\n";
webkit_web_view_evaluate_javascript(web_view, hints_script, -1, NULL, NULL, NULL, NULL, NULL);
} else {
fprintf(stderr, "Hints are disabled\n");
}
}
void
cooperation_setup(void)
{
GIOChannel *towatch;
gchar *fifofilename, *fifopath;
fifofilename = g_strdup_printf("%s-%s", NAME".fifo", fifo_suffix);
fifopath = g_build_filename(g_get_user_runtime_dir(), fifofilename, NULL);
g_free(fifofilename);
if (!g_file_test(fifopath, G_FILE_TEST_EXISTS))
mkfifo(fifopath, 0600);
cooperative_pipe_fp = open(fifopath, O_WRONLY | O_NONBLOCK);
if (!cooperative_pipe_fp)
{
fprintf(stderr, NAME": Can't open FIFO at all.\n");
}
else
{
if (write(cooperative_pipe_fp, "", 0) == -1)
{
/* Could not do an empty write to the FIFO which means there's
* no one listening. */
close(cooperative_pipe_fp);
towatch = g_io_channel_new_file(fifopath, "r+", NULL);
g_io_add_watch(towatch, G_IO_IN, (GIOFunc)remote_msg, NULL);
}
else
cooperative_alone = FALSE;
}
g_free(fifopath);
}
void
changed_download_progress(GObject *obj, GParamSpec *pspec, gpointer data)
{
WebKitDownload *download = WEBKIT_DOWNLOAD(obj);
WebKitURIResponse *resp;
GtkToolItem *tb = GTK_TOOL_ITEM(data);
gdouble p, size_mb;
const gchar *uri;
gchar *t, *filename, *base;
guint64 content_length;
p = webkit_download_get_estimated_progress(download);
p = p > 1 ? 1 : p;
p = p < 0 ? 0 : p;
p *= 100;
resp = webkit_download_get_response(download);
content_length = webkit_uri_response_get_content_length(resp);
size_mb = content_length / 1e6;
uri = webkit_download_get_destination(download);
filename = g_filename_from_uri(uri, NULL, NULL);
if (filename == NULL)
{
fprintf(stderr, NAME": Could not construct file name from URI!\n");
t = g_strdup_printf("%s (%.0f%% of %.1f MB)",
webkit_uri_response_get_uri(resp), p, size_mb);
}
else
{
base = g_path_get_basename(filename);
t = g_strdup_printf("%s (%.0f%% of %.1f MB)", base, p, size_mb);
g_free(filename);
g_free(base);
}
gtk_tool_button_set_label(GTK_TOOL_BUTTON(tb), t);
g_free(t);
// If the download is complete, remove it from the active downloads
if (p >= 100) {
downloads--;
gtk_widget_destroy(GTK_WIDGET(tb));
}
}
void changed_load_progress(GObject *obj, GParamSpec *pspec, gpointer data)
{
struct Client *c = (struct Client *)data;
gdouble p;
gchar *grab_feeds =
"a = document.querySelectorAll('"
" html > head > link[rel=\"alternate\"][href][type=\"application/atom+xml\"],"
" html > head > link[rel=\"alternate\"][href][type=\"application/rss+xml\"]"
"');"
"if (a.length == 0)"
" null;"
"else"
"{"
" out = '';"
" for (i = 0; i < a.length; i++)"
" {"
" url = encodeURIComponent(a[i].href);"
" if ('title' in a[i] && a[i].title != '')"
" title = encodeURIComponent(a[i].title);"
" else"
" title = url;"
" out += '<li><a href=\"' + url + '\">' + title + '</a></li>';"
" }"
" out;"
"}";
p = webkit_web_view_get_estimated_load_progress(WEBKIT_WEB_VIEW(c->web_view));
if (p == 1)
{
p = 0;
/* The page has loaded fully. We now run the short JavaScript
* snippet above that operates on the DOM. It tries to grab all
* occurences of <link rel="alternate" ...>, i.e. RSS/Atom feed
* references. */
webkit_web_view_evaluate_javascript(WEBKIT_WEB_VIEW(c->web_view),
grab_feeds, -1, NULL, NULL,
NULL, grab_feeds_finished, c);
run_user_scripts(WEBKIT_WEB_VIEW(c->web_view));
}
gtk_entry_set_progress_fraction(GTK_ENTRY(c->location), p);
}
void
changed_favicon(GObject *obj, GParamSpec *pspec, gpointer data)
{
struct Client *c = (struct Client *)data;
cairo_surface_t *f;
int w, h, w_should, h_should;
GdkPixbuf *pb, *pb_scaled;
f = webkit_web_view_get_favicon(WEBKIT_WEB_VIEW(c->web_view));
if (f == NULL)
{
gtk_image_set_from_icon_name(GTK_IMAGE(c->tabicon), "text-html",
GTK_ICON_SIZE_SMALL_TOOLBAR);
}
else
{
w = cairo_image_surface_get_width(f);
h = cairo_image_surface_get_height(f);
pb = gdk_pixbuf_get_from_surface(f, 0, 0, w, h);
if (pb != NULL)
{
w_should = 16 * gtk_widget_get_scale_factor(c->tabicon);
h_should = 16 * gtk_widget_get_scale_factor(c->tabicon);
pb_scaled = gdk_pixbuf_scale_simple(pb, w_should, h_should,
GDK_INTERP_BILINEAR);
gtk_image_set_from_pixbuf(GTK_IMAGE(c->tabicon), pb_scaled);
g_object_unref(pb_scaled);
g_object_unref(pb);
}
}
}
void
changed_title(GObject *obj, GParamSpec *pspec, gpointer data)
{
const gchar *t, *u;
struct Client *c = (struct Client *)data;
u = webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view));
t = webkit_web_view_get_title(WEBKIT_WEB_VIEW(c->web_view));
u = u == NULL ? NAME : u;
u = u[0] == 0 ? NAME : u;
t = t == NULL ? u : t;
t = t[0] == 0 ? u : t;
gtk_label_set_text(GTK_LABEL(c->tablabel), t);
gtk_widget_set_tooltip_text(c->tablabel, t);
mainwindow_title(gtk_notebook_get_current_page(GTK_NOTEBOOK(mw.notebook)));
}
void
changed_uri(GObject *obj, GParamSpec *pspec, gpointer data)
{
const gchar *t;
struct Client *c = (struct Client *)data;
FILE *fp;
t = webkit_web_view_get_uri(WEBKIT_WEB_VIEW(c->web_view));
/* When a web process crashes, we get a "notify::uri" signal, but we
* can no longer read a meaningful URI. It's just an empty string
* now. Not updating the location bar in this scenario is important,
* because we would override the "WEB PROCESS CRASHED" message. */
if (t != NULL && strlen(t) > 0)
{
gtk_entry_set_text(GTK_ENTRY(c->location), t);
if (history_file != NULL)
{
fp = fopen(history_file, "a");
if (fp != NULL)
{
fprintf(fp, "%s\n", t);
fclose(fp);
}
else
perror(NAME": Error opening history file");
}
}
}
gboolean
crashed_web_view(WebKitWebView *web_view, gpointer data)
{
gchar *t;
struct Client *c = (struct Client *)data;
t = g_strdup_printf("WEB PROCESS CRASHED: %s",
webkit_web_view_get_uri(WEBKIT_WEB_VIEW(web_view)));
gtk_entry_set_text(GTK_ENTRY(c->location), t);
g_free(t);
return TRUE;
}
gboolean
decide_policy(WebKitWebView *web_view, WebKitPolicyDecision *decision,
WebKitPolicyDecisionType type, gpointer data)
{
WebKitResponsePolicyDecision *r;
switch (type)
{
case WEBKIT_POLICY_DECISION_TYPE_RESPONSE:
r = WEBKIT_RESPONSE_POLICY_DECISION(decision);
if (!webkit_response_policy_decision_is_mime_type_supported(r))
webkit_policy_decision_download(decision);
else
webkit_policy_decision_use(decision);
break;
default:
/* Use whatever default there is. */
return FALSE;
}
return TRUE;
}
void
download_handle_finished(WebKitDownload *download, gpointer data)
{
downloads--;
if (downloads == 0 && gtk_widget_get_visible(dm.win)) {
gtk_widget_hide(dm.win);
}
}
void
download_handle_start(WebKitWebView *web_view, WebKitDownload *download,
gpointer data)
{
// Check if the signal handler is already connected
if (!g_signal_handler_find(G_OBJECT(download), G_SIGNAL_MATCH_FUNC, 0, 0, NULL, G_CALLBACK(download_handle), NULL)) {
g_signal_connect(G_OBJECT(download), "decide-destination",
G_CALLBACK(download_handle), data);
}
}
gboolean
download_handle(WebKitDownload *download, gchar *suggested_filename, gpointer data)
{
gchar *sug_clean, *path, *path2 = NULL, *uri;
GtkToolItem *tb;
int suffix = 1;
size_t i;
guint64 content_length;
const gchar *mime_type;
// Get the content length of the download
content_length = webkit_uri_response_get_content_length(
webkit_download_get_response(download));
// If the content length is 0, cancel the download
if (content_length == 0) {
fprintf(stderr, NAME": Download cancelled due to zero content length\n");
webkit_download_cancel(download);
return FALSE;
}
// Get the MIME type of the download
mime_type = webkit_uri_response_get_mime_type(webkit_download_get_response(download));
// Check if it's an image
gboolean is_image = g_str_has_prefix(mime_type, "image/");
sug_clean = g_strdup(suggested_filename);
for (i = 0; i < strlen(sug_clean); i++)
if (sug_clean[i] == G_DIR_SEPARATOR)
sug_clean[i] = '_';
path = g_build_filename(download_dir, sug_clean, NULL);
path2 = g_strdup(path);
while (g_file_test(path2, G_FILE_TEST_EXISTS) && suffix < 1000)
{
g_free(path2);
path2 = g_strdup_printf("%s.%d", path, suffix);
suffix++;
}
if (suffix == 1000)
{
fprintf(stderr, NAME": Suffix reached limit for download.\n");
webkit_download_cancel(download);
}
else
{
uri = g_filename_to_uri(path2, NULL, NULL);
webkit_download_set_destination(download, uri);
g_free(uri);
tb = gtk_tool_button_new(NULL, NULL);
gtk_tool_button_set_icon_name(GTK_TOOL_BUTTON(tb), "gtk-delete");
gtk_tool_button_set_label(GTK_TOOL_BUTTON(tb), sug_clean);