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Generate CSS rules from adblock element blocking lines

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This commit is contained in:
Alexander Butenko 2009-09-14 18:25:08 +02:00 committed by Christian Dywan
parent 516547814c
commit 5f98925a02
1 changed files with 108 additions and 41 deletions
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145
extensions/adblock.c
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@ -23,6 +23,7 @@
#if WEBKIT_CHECK_VERSION (1, 1, 14)
static GHashTable* pattern = NULL;
static gchar* blockcss = "";
static gchar *
adblock_fixup_regexp (gchar* src)
@ -65,26 +66,6 @@ adblock_browser_populate_tool_menu_cb (MidoriBrowser* browser,
GtkWidget* menu,
MidoriExtension* extension);
static void
adblock_app_add_browser_cb (MidoriApp* app,
MidoriBrowser* browser,
MidoriExtension* extension);
static void
adblock_deactivate_cb (MidoriExtension* extension,
MidoriBrowser* browser)
{
MidoriApp* app = midori_extension_get_app (extension);
g_signal_handlers_disconnect_by_func (
browser, adblock_browser_populate_tool_menu_cb, extension);
g_signal_handlers_disconnect_by_func (
extension, adblock_deactivate_cb, browser);
g_signal_handlers_disconnect_by_func (
app, adblock_app_add_browser_cb, extension);
/* FIXME: Disconnect session callbacks */
}
static void
adblock_preferences_renderer_text_edited_cb (GtkCellRenderer* renderer,
const gchar* tree_path,
@ -340,50 +321,107 @@ adblock_resource_request_starting_cb (WebKitWebView* web_view,
}
}
static gchar*
adblock_build_js (gchar* style)
{
return g_strdup_printf (
"window.addEventListener ('DOMContentLoaded',"
"function () {"
"var mystyle = document.createElement(\"style\");"
"mystyle.setAttribute(\"type\", \"text/css\");"
"mystyle.appendChild(document.createTextNode('%s'));"
"var head = document.getElementsByTagName(\"head\")[0];"
"if (head) head.appendChild(mystyle);"
"else document.documentElement.insertBefore(mystyle, document.documentElement.firstChild);"
"}, true);",
style);
}
static void
adblock_window_object_cleared_cb (GtkWidget* web_view,
WebKitWebFrame* web_frame,
JSContextRef js_context,
JSObjectRef js_window)
{
webkit_web_view_execute_script (WEBKIT_WEB_VIEW (web_view),
adblock_build_js (blockcss));
}
static void
adblock_add_tab_cb (MidoriBrowser* browser,
MidoriView* view)
{
GtkWidget* web_view = gtk_bin_get_child (GTK_BIN (view));
if (blockcss && *blockcss)
g_signal_connect (web_view, "window-object-cleared",
G_CALLBACK (adblock_window_object_cleared_cb), 0);
if (pattern)
g_signal_connect (web_view, "resource-request-starting",
G_CALLBACK (adblock_resource_request_starting_cb), view);
}
static void
adblock_deactivate_cb (MidoriExtension* extension,
MidoriBrowser* browser);
static void
adblock_add_tab_foreach_cb (MidoriView* view,
MidoriBrowser* browser)
{
adblock_add_tab_cb (browser, view);
}
static void
adblock_app_add_browser_cb (MidoriApp* app,
MidoriBrowser* browser,
MidoriExtension* extension)
{
if (pattern)
g_signal_connect (browser, "add-tab",
G_CALLBACK (adblock_add_tab_cb), 0);
{
midori_browser_foreach (browser, (GtkCallback)adblock_add_tab_foreach_cb, browser);
g_signal_connect (browser, "add-tab", G_CALLBACK (adblock_add_tab_cb), 0);
}
g_signal_connect (browser, "populate-tool-menu",
G_CALLBACK (adblock_browser_populate_tool_menu_cb), extension);
g_signal_connect (extension, "deactivate",
G_CALLBACK (adblock_deactivate_cb), browser);
}
static void
adblock_frame_add (gchar* line)
{
(void)*line++;
(void)*line++;
blockcss = g_strdup_printf ("%s %s { display: none !important; }",blockcss,line);
}
static gchar*
adblock_parse_line (gchar* line)
{
if (!line)
return NULL;
g_strchomp (line);
/* Ignore comments and new lines */
if (line[0] == '!')
return NULL;
/* FIXME: No support for whitelisting */
if (line[0] == '@' && line[1] == '@')
return NULL;
/* FIXME: Differentiate # comments from element hiding */
/* FIXME: No support for element hiding */
/* Got block hider */
if (line[0] == '#' && line[1] == '#' && (line[2] == '.'||line[2] == '#'||line[2] == 'a'))
{
adblock_frame_add (line);
return NULL;
}
/* FIXME: Do we have smth else starting with ##? */
if (line[0] == '#' && line[1] == '#')
return NULL;
/* FIXME: No support for per domain element hiding */
if (strstr (line,"##"))
return NULL;
/* FIXME: No support for [include] and [exclude] tags */
if (line[0] == '[')
return NULL;
g_strchomp (line);
return adblock_fixup_regexp (line);
}
@ -391,7 +429,6 @@ static GHashTable*
adblock_parse_file (gchar* path)
{
FILE* file;
if ((file = g_fopen (path, "r")))
{
GHashTable* patt = g_hash_table_new_full (g_str_hash, g_str_equal,
@ -430,8 +467,6 @@ adblock_parse_file (gchar* path)
if (have_pattern)
return patt;
}
/* FIXME: This should presumably be freed, but there's a possible crash
g_free (path); */
return NULL;
}
@ -444,6 +479,37 @@ adblock_download_notify_status_cb (WebKitDownload* download,
/* g_object_unref (download); */
}
static void
adblock_deactivate_tabs (MidoriView* view,
MidoriBrowser* browser)
{
GtkWidget* web_view = gtk_bin_get_child (GTK_BIN (view));
g_signal_handlers_disconnect_by_func (
browser, adblock_add_tab_cb, 0);
g_signal_handlers_disconnect_by_func (
web_view, adblock_window_object_cleared_cb, 0);
g_signal_handlers_disconnect_by_func (
web_view, adblock_resource_request_starting_cb, view);
}
static void
adblock_deactivate_cb (MidoriExtension* extension,
MidoriBrowser* browser)
{
MidoriApp* app = midori_extension_get_app (extension);
g_signal_handlers_disconnect_by_func (
browser, adblock_browser_populate_tool_menu_cb, extension);
g_signal_handlers_disconnect_by_func (
extension, adblock_deactivate_cb, browser);
g_signal_handlers_disconnect_by_func (
app, adblock_app_add_browser_cb, extension);
midori_browser_foreach (browser, (GtkCallback)adblock_deactivate_tabs, browser);
pattern = NULL;
blockcss = "";
}
static void
adblock_activate_cb (MidoriExtension* extension,
MidoriApp* app)
@ -453,17 +519,7 @@ adblock_activate_cb (MidoriExtension* extension,
guint i;
gchar* folder;
gchar** filters;
SoupSession* session;
browsers = katze_object_get_object (app, "browsers");
i = 0;
while ((browser = katze_array_get_nth_item (browsers, i++)))
adblock_app_add_browser_cb (app, browser, extension);
g_signal_connect (app, "add-browser",
G_CALLBACK (adblock_app_add_browser_cb), extension);
g_object_unref (browsers);
session = webkit_get_default_session ();
folder = g_build_filename (g_get_user_cache_dir (), PACKAGE_NAME,
"adblock", NULL);
g_mkdir_with_parents (folder, 0700);
@ -476,6 +532,7 @@ adblock_activate_cb (MidoriExtension* extension,
gchar* filename = g_compute_checksum_for_string (G_CHECKSUM_MD5,
filters[i - 1], -1);
gchar* path = g_build_filename (folder, filename, NULL);
if (!g_file_test (path, G_FILE_TEST_EXISTS))
{
WebKitNetworkRequest* request;
@ -493,9 +550,19 @@ adblock_activate_cb (MidoriExtension* extension,
}
else
pattern = adblock_parse_file (path);
g_free (path);
g_free (filename);
}
}
browsers = katze_object_get_object (app, "browsers");
i = 0;
while ((browser = katze_array_get_nth_item (browsers, i++)))
adblock_app_add_browser_cb (app, browser, extension);
g_signal_connect (app, "add-browser",
G_CALLBACK (adblock_app_add_browser_cb), extension);
g_object_unref (browsers);
g_strfreev (filters);
g_free (folder);
}