path: root/embed/mozilla/mozilla-embed-single.cpp

/*  vim:set ts=8 noet sw=8:
 *  Copyright © 2000-2004 Marco Pesenti Gritti
 *  Copyright © 2003 Robert Marcano
 *  Copyright © 2003, 2004, 2005, 2006 Christian Persch
 *  Copyright © 2005 Crispin Flowerday
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 *  $Id$
 */

#include "mozilla-config.h"

#include "config.h"

#include <stdlib.h>

#include <glib.h>
#include <glib/gi18n.h>
#include <libgnomevfs/gnome-vfs-utils.h>

#include <nsStringAPI.h>

#include <gtkmozembed.h>
#include <gtkmozembed_internal.h>
#include <nsComponentManagerUtils.h>
#include <nsCOMPtr.h>
#include <nsCPasswordManager.h>
#include <nsICookie2.h>
#include <nsICookieManager.h>
#include <nsICookieManager.h>
#include <nsIFile.h>
#include <nsIIOService.h>
#include <nsILocalFile.h>
#include <nsIPassword.h>
#include <nsIPasswordManager.h>
#include <nsIPermission.h>
#include <nsIPermissionManager.h>
#include <nsIPrefService.h>
#include <nsIStyleSheetService.h>
#include <nsISupportsPrimitives.h>
#include <nsIURI.h>
#include <nsIWindowWatcher.h>
#include <nsMemory.h>
#include <nsServiceManagerUtils.h>

#ifdef HAVE_MOZILLA_PSM
#include <nsIX509Cert.h>
#include <nsIX509CertDB.h>
#endif

#ifdef ALLOW_PRIVATE_API
#include <nsICacheService.h>
#include <nsIFontEnumerator.h>
#include <nsIHttpAuthManager.h>
#include <nsIIDNService.h>
#include <nsNetCID.h>
#endif /* ALLOW_PRIVATE_API */

#include "ephy-file-helpers.h"
#include "eel-gconf-extensions.h"
#include "ephy-certificate-manager.h"
#include "ephy-cookie-manager.h"
#include "ephy-debug.h"
#include "ephy-embed-prefs.h"
#include "ephy-embed-shell.h"
#include "ephy-file-helpers.h"
#include "ephy-langs.h"
#include "ephy-password-manager.h"
#include "ephy-permission-manager.h"
#include "mozilla-embed.h"
#include "mozilla-notifiers.h"
#include "mozilla-x509-cert.h"

#include "EphyBrowser.h"
#include "EphyDirectoryProvider.h"
#include "EphySingle.h"
#include "EphyUtils.h"
#include "MozRegisterComponents.h"

#include "mozilla-embed-single.h"

#include "AutoJSContextStack.h"

#define MOZILLA_PROFILE_DIR  "/mozilla"
#define MOZILLA_PROFILE_NAME "epiphany"
#define MOZILLA_PROFILE_FILE "prefs.js"
#define DEFAULT_PROFILE_FILE SHARE_DIR"/default-prefs.js"

#define USER_CSS_LOAD_DELAY 500 /* ms */

#define MOZILLA_EMBED_SINGLE_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), MOZILLA_TYPE_EMBED_SINGLE, MozillaEmbedSinglePrivate))

struct MozillaEmbedSinglePrivate
{
    char *user_prefs;
    
    EphySingle *mSingleObserver;

    char *user_css_file;
        guint user_css_enabled_notifier_id;
        EphyFileMonitor *user_css_file_monitor;
        guint user_css_enabled : 1;

    guint online : 1;
};

enum
{
    PROP_0,
    PROP_NETWORK_STATUS
};

static void mozilla_embed_single_class_init (MozillaEmbedSingleClass *klass);
static void ephy_embed_single_iface_init    (EphyEmbedSingleIface *iface);
static void ephy_cookie_manager_iface_init  (EphyCookieManagerIface *iface);
static void ephy_password_manager_iface_init    (EphyPasswordManagerIface *iface);
static void ephy_permission_manager_iface_init  (EphyPermissionManagerIface *iface);
static void mozilla_embed_single_init       (MozillaEmbedSingle *ges);

#ifdef ENABLE_CERTIFICATE_MANAGER
static void ephy_certificate_manager_iface_init (EphyCertificateManagerIface *iface);
#endif

static GObjectClass *parent_class = NULL;

GType
mozilla_embed_single_get_type (void)
{
       static GType type = 0;

        if (G_UNLIKELY (type == 0))
        {
                const GTypeInfo our_info =
                {
                        sizeof (MozillaEmbedSingleClass),
                        NULL, /* base_init */
                        NULL, /* base_finalize */
                        (GClassInitFunc) mozilla_embed_single_class_init,
                        NULL, /* class_finalize */
                        NULL, /* class_data */
                        sizeof (MozillaEmbedSingle),
                        0,    /* n_preallocs */
                        (GInstanceInitFunc) mozilla_embed_single_init
                };

        const GInterfaceInfo embed_single_info =
        {
            (GInterfaceInitFunc) ephy_embed_single_iface_init,
            NULL,
            NULL
        };

        const GInterfaceInfo cookie_manager_info =
        {
            (GInterfaceInitFunc) ephy_cookie_manager_iface_init,
            NULL,
            NULL
        };

        const GInterfaceInfo password_manager_info =
        {
            (GInterfaceInitFunc) ephy_password_manager_iface_init,
            NULL,
            NULL
        };

        const GInterfaceInfo permission_manager_info =
        {
            (GInterfaceInitFunc) ephy_permission_manager_iface_init,
            NULL,
            NULL
        };

#ifdef ENABLE_CERTIFICATE_MANAGER
        const GInterfaceInfo certificate_manager_info =
        {
            (GInterfaceInitFunc) ephy_certificate_manager_iface_init,
            NULL,
            NULL
        };
#endif

        type = g_type_register_static (G_TYPE_OBJECT,
                           "MozillaEmbedSingle",
                           &our_info,
                           (GTypeFlags)0);

        g_type_add_interface_static (type,
                         EPHY_TYPE_EMBED_SINGLE,
                         &embed_single_info);

        g_type_add_interface_static (type,
                         EPHY_TYPE_COOKIE_MANAGER,
                         &cookie_manager_info);

        g_type_add_interface_static (type,
                         EPHY_TYPE_PASSWORD_MANAGER,
                         &password_manager_info);

        g_type_add_interface_static (type,
                         EPHY_TYPE_PERMISSION_MANAGER,
                         &permission_manager_info);
#ifdef ENABLE_CERTIFICATE_MANAGER
        g_type_add_interface_static (type,
                         EPHY_TYPE_CERTIFICATE_MANAGER,
                         &certificate_manager_info);
#endif
    }

        return type;
}

static gboolean
mozilla_set_default_prefs (MozillaEmbedSingle *mes)
{
    nsCOMPtr<nsIPrefService> prefService;

        prefService = do_GetService (NS_PREFSERVICE_CONTRACTID);
    NS_ENSURE_TRUE (prefService, FALSE);

        /* read our predefined default prefs */
        nsresult rv;
        nsCOMPtr<nsILocalFile> file;
        NS_NewNativeLocalFile(nsCString(DEFAULT_PROFILE_FILE),
                  PR_TRUE, getter_AddRefs(file));
    if (!file) return FALSE;

        rv = prefService->ReadUserPrefs (file);                                                                              
        if (NS_FAILED(rv))
        {
                g_warning ("failed to read default preferences, error: %x", rv);
        return FALSE;
        }
                                                                                                                             
    nsCOMPtr<nsIPrefBranch> pref;
    prefService->GetBranch ("", getter_AddRefs(pref));
    NS_ENSURE_TRUE (pref, FALSE);

    /* We do this before reading the user pref file so that the user
     * still can overwrite this pref.
     * We don't use the default-prefs.js file since that cannot be
     * localised (see bug #144909).
     */
    /* translators: this is the URL that searches from the location
     * entry get directed to. The search terms will be _appended_ to it,
     * in url-escaped UTF-8; that means that if you're choosing google,
     * the 'q=' part needs to come last.
     */
    pref->SetCharPref ("keyword.URL", _("http://www.google.com/search?ie=UTF-8&oe=UTF-8&q="));

        /* Load the default user preferences as well.  This also makes the
           prefs to be saved in the user's prefs.js file, instead of messing up
           our global defaults file. */
        rv = prefService->ReadUserPrefs (nsnull);
        if (NS_FAILED(rv))
        {
                g_warning ("failed to read user preferences, error: %x", rv);
        }

    pref->SetCharPref ("general.useragent.extra.epiphany", "Epiphany/" UA_VERSION);

    /* Unset old prefs, otherwise they end up in the user agent string too */
    pref->ClearUserPref ("general.useragent.vendor");
    pref->ClearUserPref ("general.useragent.vendorSub");

    /* Don't open ftp uris with an external handler if one is setup */
    pref->SetBoolPref ("network.protocol-handler.external.ftp", PR_FALSE);  

    return TRUE;
}

static void 
mozilla_embed_single_new_window_orphan_cb (GtkMozEmbedSingle *moz_single,
                       GtkMozEmbed **newEmbed,
                       guint chrome_mask,
                       EphyEmbedSingle *single)
{
    GtkMozEmbedChromeFlags chrome = (GtkMozEmbedChromeFlags) chrome_mask;
    EphyEmbed *new_embed = NULL;
    EphyEmbedChrome mask;

    if (chrome_mask & GTK_MOZ_EMBED_FLAG_OPENASCHROME)
    {
        *newEmbed = _mozilla_embed_new_xul_dialog ();
        return;
    }

    mask = _mozilla_embed_translate_chrome (chrome);

    g_signal_emit_by_name (single, "new-window", NULL, mask,
                   &new_embed);

    /* it's okay not to have a new embed */
    if (new_embed != NULL)
    {
        gtk_moz_embed_set_chrome_mask (GTK_MOZ_EMBED (new_embed), chrome);

        *newEmbed = GTK_MOZ_EMBED (new_embed);
    }
}

static GList *
mozilla_init_plugin_add_unique_path (GList *list,
                     const char *path)
{
    GList *l;
    char *canon;

    if (path == NULL)
        return list;

    canon = gnome_vfs_make_path_name_canonical (path);
    for (l = list; l != NULL; l = l->next) {
        if (g_str_equal (list->data, canon) != FALSE) {
            /* The path is already in the list */
            g_free (canon);
            return list;
        }
    }
    return g_list_prepend (list, canon);
}

static GList *
mozilla_init_plugin_add_unique_paths (GList *list,
                      const char *path)
{
    char **paths;
    guint i;

    if (path == NULL)
        return list;

    paths = g_strsplit (path, ":", -1);
    if (paths == NULL)
        return list;
    for (i = 0; paths[i] != NULL; i++) {
        list = mozilla_init_plugin_add_unique_path (list, paths[i]);
    }
    g_strfreev (paths);
    return list;
}

static void
mozilla_init_plugin_path ()
{
    GList *list, *l;
    GString *path;

    list = NULL;
    list = mozilla_init_plugin_add_unique_paths (list,
                             g_getenv ("MOZ_PLUGIN_PATH"));
    list = mozilla_init_plugin_add_unique_path (list,
                            MOZILLA_PREFIX "/lib/mozilla/plugins");
    list = mozilla_init_plugin_add_unique_path (list,
                            MOZILLA_HOME "/plugins");
    list = mozilla_init_plugin_add_unique_path (list,
                            MOZILLA_NATIVE_PLUGINSDIR);
#ifdef HAVE_PRIVATE_PLUGINS
    list = mozilla_init_plugin_add_unique_path (list, PLUGINDIR);
#endif

    list = g_list_reverse (list);
    path = g_string_new ((const char *) list->data);
    g_free (list->data);
    l = list->next;
    for (; l != NULL; l = l->next) {
        path = g_string_append_c (path, ':');
        path = g_string_append (path, (const char *) l->data);
        g_free (l->data);
    }
    g_list_free (list);

    g_setenv ("MOZ_PLUGIN_PATH", path->str, TRUE);
    g_string_free (path, TRUE);
}

static void
mozilla_init_single (MozillaEmbedSingle *mes)
{   
    GtkMozEmbedSingle *single;
    
    /* get single */
        single = gtk_moz_embed_single_get ();
        if (single == NULL)
        {
                g_warning ("Failed to get singleton embed object!\n");
        }

        /* allow creation of orphan windows */
        g_signal_connect (G_OBJECT (single), "new_window_orphan",
                          G_CALLBACK (mozilla_embed_single_new_window_orphan_cb),
              mes);
}

void
mozilla_init_profile (void)
{
    char *profile_path;
    profile_path = g_build_filename (ephy_dot_dir (), 
                     MOZILLA_PROFILE_DIR,
                     (char *) NULL);
        gtk_moz_embed_set_profile_path (profile_path, MOZILLA_PROFILE_NAME);
        g_free (profile_path);
}

#if defined(MOZ_NSIXULCHROMEREGISTRY_SELECTSKIN) || defined(HAVE_CHROME_NSICHROMEREGISTRYSEA_H)
static nsresult
getUILang (nsAString& aUILang)
{
    nsresult rv;

    nsCOMPtr<nsILocaleService> localeService = do_GetService (NS_LOCALESERVICE_CONTRACTID);
    if (!localeService)
    {
        g_warning ("Could not get locale service!\n");
        return NS_ERROR_FAILURE;
    }

    rv = localeService->GetLocaleComponentForUserAgent (aUILang);

    if (NS_FAILED (rv))
    {
        g_warning ("Could not determine locale!\n");
        return NS_ERROR_FAILURE;
    }

    return NS_OK;
}
#endif

static void
mozilla_init_observer (MozillaEmbedSingle *single)
{
    EphySingle *es;

    es = new EphySingle ();
    NS_ADDREF (single->priv->mSingleObserver = es);

    nsresult rv;
    rv = es->Init (EPHY_EMBED_SINGLE (single));
    if (NS_FAILED (rv))
    {
        g_warning ("Failed to initialise EphySingle!\n");
        return;
    }
}

static void
user_css_register (MozillaEmbedSingle *single)
{
    MozillaEmbedSinglePrivate *priv = single->priv;

    nsresult rv;
    nsCOMPtr<nsILocalFile> file;
    rv = NS_NewNativeLocalFile (nsDependentCString (priv->user_css_file),
                    PR_TRUE, getter_AddRefs (file));
    NS_ENSURE_SUCCESS (rv, );

    PRBool exists = PR_FALSE;
    rv = file->Exists (&exists);
    if (NS_FAILED (rv) || !exists) return;

    nsCOMPtr<nsIURI> uri;
    rv = EphyUtils::NewFileURI (getter_AddRefs (uri), file);
    NS_ENSURE_SUCCESS (rv, );

    nsCOMPtr<nsIStyleSheetService> service
            (do_GetService ("@mozilla.org/content/style-sheet-service;1", &rv));
    NS_ENSURE_SUCCESS (rv, );

    PRBool isRegistered = PR_FALSE;
    rv = service->SheetRegistered (uri, nsIStyleSheetService::USER_SHEET,
                       &isRegistered);
    if (NS_SUCCEEDED (rv) && isRegistered)
    {
        rv = service->UnregisterSheet (uri, nsIStyleSheetService::USER_SHEET);
    }

    rv = service->LoadAndRegisterSheet (uri, nsIStyleSheetService::AGENT_SHEET);
    if (NS_FAILED (rv))
    {
        g_warning ("Registering the user stylesheet failed (rv=%x)!\n", rv);
    }
}

static void
user_css_unregister (MozillaEmbedSingle *single)
{
    MozillaEmbedSinglePrivate *priv = single->priv;

    nsresult rv;
    nsCOMPtr<nsILocalFile> file;
    rv = NS_NewNativeLocalFile (nsDependentCString (priv->user_css_file),
                    PR_TRUE, getter_AddRefs (file));
    NS_ENSURE_SUCCESS (rv, );

    nsCOMPtr<nsIURI> uri;
    rv = EphyUtils::NewFileURI (getter_AddRefs (uri), file);
    NS_ENSURE_SUCCESS (rv, );

    nsCOMPtr<nsIStyleSheetService> service
            (do_GetService ("@mozilla.org/content/style-sheet-service;1", &rv));
    NS_ENSURE_SUCCESS (rv, );

    PRBool isRegistered = PR_FALSE;
    rv = service->SheetRegistered (uri, nsIStyleSheetService::USER_SHEET,
                       &isRegistered);
    if (NS_SUCCEEDED (rv) && isRegistered)
    {
        rv = service->UnregisterSheet (uri, nsIStyleSheetService::USER_SHEET);
    }
    if (NS_FAILED (rv))
    {
        g_warning ("Unregistering the user stylesheet failed (rv=%x)!\n", rv);
    }
}

static void
user_css_file_monitor_func (EphyFileMonitor *,
                const char *,
                GnomeVFSMonitorEventType event_type,
                MozillaEmbedSingle *single)
{
    LOG ("Reregistering the user style sheet");

    if (event_type == GNOME_VFS_MONITOR_EVENT_DELETED)
    {
        user_css_unregister (single);
    }
    else
    {
        user_css_register (single);
    }
}

static void
user_css_enabled_notify (GConfClient *client,
             guint cnxn_id,
             GConfEntry *entry,
             MozillaEmbedSingle *single)
{
    MozillaEmbedSinglePrivate *priv = single->priv;
    guint enabled;

    enabled = eel_gconf_get_boolean (CONF_USER_CSS_ENABLED) != FALSE;
    if (priv->user_css_enabled == enabled) return;

    LOG ("User stylesheet enabled: %s", enabled ? "t" : "f");

    priv->user_css_enabled = enabled;

        if (enabled)
    {
        char *uri;

        user_css_register (single);

        uri = gnome_vfs_get_uri_from_local_path (priv->user_css_file);

        g_assert (priv->user_css_file_monitor == NULL);
        priv->user_css_file_monitor =
            ephy_file_monitor_add (uri,
                           GNOME_VFS_MONITOR_FILE,
                           USER_CSS_LOAD_DELAY,
                           (EphyFileMonitorFunc) user_css_file_monitor_func,
                           NULL,
                           single);
        g_free (uri);
    }
        else
    {
        if (priv->user_css_file_monitor != NULL)
        {
            ephy_file_monitor_cancel (priv->user_css_file_monitor);
            priv->user_css_file_monitor = NULL;
        }

        user_css_unregister (single);
    }
}

static void
mozilla_stylesheet_init (MozillaEmbedSingle *single)
{
    MozillaEmbedSinglePrivate *priv = single->priv;

    priv->user_css_file = g_build_filename (ephy_dot_dir (),
                        USER_STYLESHEET_FILENAME,
                        (char *) NULL);

    user_css_enabled_notify (NULL, 0, NULL, single);
    priv->user_css_enabled_notifier_id =
        eel_gconf_notification_add
            (CONF_USER_CSS_ENABLED,
             (GConfClientNotifyFunc) user_css_enabled_notify,
             single);
}

static void
mozilla_stylesheet_shutdown (MozillaEmbedSingle *single)
{
    MozillaEmbedSinglePrivate *priv = single->priv;

    if (priv->user_css_enabled_notifier_id != 0)
    {
        eel_gconf_notification_remove (priv->user_css_enabled_notifier_id);
        priv->user_css_enabled_notifier_id = 0;
    }

    if (priv->user_css_file_monitor != NULL)
    {
        ephy_file_monitor_cancel (priv->user_css_file_monitor);
        priv->user_css_file_monitor = NULL;
    }

    if (priv->user_css_file != NULL)
    {
        g_free (priv->user_css_file);
        priv->user_css_file = NULL;
    }
}

static gboolean
impl_init (EphyEmbedSingle *esingle)
{
    MozillaEmbedSingle *single = MOZILLA_EMBED_SINGLE (esingle);

#ifdef MOZ_ENABLE_XPRINT
    /* XPrint? No, thanks! */
    g_unsetenv ("XPSERVERLIST");
#endif

#ifdef HAVE_GECKO_1_9
    NS_LogInit ();
#endif

    /* Pre initialization */
    mozilla_init_plugin_path ();

    mozilla_init_profile ();

#ifdef HAVE_GECKO_1_9
    gtk_moz_embed_set_path (MOZILLA_HOME);
#endif
    /* Set mozilla binary path */
    gtk_moz_embed_set_comp_path (MOZILLA_HOME);

    nsCOMPtr<nsIDirectoryServiceProvider> dp = new EphyDirectoryProvider ();
    if (!dp) return FALSE;

    gtk_moz_embed_set_directory_service_provider (dp);

    /* Fire up the beast */
    gtk_moz_embed_push_startup ();
    /* FIXME check that it succeeded! */

    mozilla_register_components ();

    mozilla_init_single (single);

    if (!mozilla_set_default_prefs (single))
    {
        return FALSE;
    }

    START_PROFILER ("Mozilla prefs notifiers")
    mozilla_notifiers_init ();
    STOP_PROFILER ("Mozilla prefs notifiers")

    mozilla_init_observer (single);

        mozilla_stylesheet_init (single);

    return TRUE;
}

static void
prepare_close_cb (EphyEmbedShell *shell)
{
    GValue value = { 0, };

    /* To avoid evil web sites posing an alert and thus inhibiting
     * shutdown, we just turn off javascript! :)
     */
    g_value_init (&value, G_TYPE_BOOLEAN);
    g_value_set_boolean (&value, FALSE);
    mozilla_pref_set ("javascript.enabled", &value);
    g_value_unset (&value);
}

static void
mozilla_embed_single_init (MozillaEmbedSingle *mes)
{
    mes->priv = MOZILLA_EMBED_SINGLE_GET_PRIVATE (mes);

    mes->priv->user_prefs =
        g_build_filename (ephy_dot_dir (), 
                  MOZILLA_PROFILE_DIR,
                  MOZILLA_PROFILE_NAME,
                  MOZILLA_PROFILE_FILE,
                  (char *) NULL);

    g_signal_connect_object (embed_shell, "prepare-close",
                 G_CALLBACK (prepare_close_cb), mes,
                 (GConnectFlags) 0);
}

static void
mozilla_embed_single_dispose (GObject *object)
{
    MozillaEmbedSingle *single = MOZILLA_EMBED_SINGLE (object);
    MozillaEmbedSinglePrivate *priv = single->priv;

        mozilla_stylesheet_shutdown (single);

    if (priv->mSingleObserver)
    {
        priv->mSingleObserver->Detach ();
        NS_RELEASE (priv->mSingleObserver);
        priv->mSingleObserver = nsnull;
    }

    parent_class->dispose (object);
}

static void
mozilla_embed_single_finalize (GObject *object)
{
    MozillaEmbedSingle *mes = MOZILLA_EMBED_SINGLE (object);

    /* Destroy EphyEmbedSingle before because some
     * services depend on xpcom */
    G_OBJECT_CLASS (parent_class)->finalize (object);

    mozilla_notifiers_shutdown ();

    gtk_moz_embed_pop_startup ();

#ifdef HAVE_GECKO_1_9
    NS_LogTerm ();
#endif

    g_free (mes->priv->user_prefs);
}

static void
impl_clear_cache (EphyEmbedSingle *shell)
{
    nsCOMPtr<nsICacheService> cacheService =
                        do_GetService (NS_CACHESERVICE_CONTRACTID);
    if (!cacheService) return;

    cacheService->EvictEntries (nsICache::STORE_ANYWHERE);
}

static void
impl_clear_auth_cache (EphyEmbedSingle *shell)
{
    nsCOMPtr<nsIHttpAuthManager> authManager =
            do_GetService (NS_HTTPAUTHMANAGER_CONTRACTID);
    if (!authManager) return;

    authManager->ClearAll();
}

static void
impl_set_network_status (EphyEmbedSingle *single,
             gboolean online)
{
    nsCOMPtr<nsIIOService> io = do_GetService(NS_IOSERVICE_CONTRACTID);
    if (!io) return;

    io->SetOffline (!online);
}

static gboolean
impl_get_network_status (EphyEmbedSingle *esingle)
{
    MozillaEmbedSingle *single = MOZILLA_EMBED_SINGLE (esingle);
    MozillaEmbedSinglePrivate *priv = single->priv;

    NS_ENSURE_TRUE (priv->mSingleObserver, TRUE);

    nsCOMPtr<nsIIOService> io = do_GetService(NS_IOSERVICE_CONTRACTID);
    if (!io) return FALSE; /* no way to check the state, assume offline */

    PRBool isOffline;
    nsresult rv;
    rv = io->GetOffline(&isOffline);
    NS_ENSURE_SUCCESS (rv, FALSE);

    PRBool isOnline = !isOffline;
    PRBool reallyOnline = priv->mSingleObserver->IsOnline ();

    g_return_val_if_fail (reallyOnline == isOnline, TRUE);

    return !isOffline;
}

static const char*
impl_get_backend_name (EphyEmbedSingle *esingle)
{
    /* If you alter the return values here, remember to update
     * the docs in ephy-embed-single.c */
#if defined (HAVE_GECKO_1_10)
# error "Need to add version string for gecko 1.10"
#elif defined(HAVE_GECKO_1_9)
    return "gecko-1.9";
#elif defined(HAVE_GECKO_1_8)
    return "gecko-1.8";
#else
# error "Undefined/unsupported gecko version!"
#endif
}

static GList *
impl_get_font_list (EphyEmbedSingle *shell,
            const char *langGroup)
{
    nsresult rv;
    PRUint32 fontCount;
    PRUnichar **fontArray;
    GList *l = NULL;

    nsCOMPtr<nsIFontEnumerator> mozFontEnumerator;
    mozFontEnumerator = do_CreateInstance("@mozilla.org/gfx/fontenumerator;1");
    NS_ENSURE_TRUE (mozFontEnumerator, NULL);

    rv = mozFontEnumerator->EnumerateFonts (langGroup, nsnull,
                            &fontCount, &fontArray);
    NS_ENSURE_SUCCESS (rv, NULL);

    for (PRUint32 i = 0; i < fontCount; i++)
    {
        char *gFontString;

        nsCString tmp;
        NS_UTF16ToCString (nsString(fontArray[i]),
                   NS_CSTRING_ENCODING_UTF8, tmp);
        gFontString = g_strdup (tmp.get());
        l = g_list_prepend (l, gFontString);
        nsMemory::Free (fontArray[i]);
    }

    nsMemory::Free (fontArray);

    return g_list_reverse (l);
}

static GList *
impl_list_cookies (EphyCookieManager *manager)
{
    nsresult rv;
    GList *cookies = NULL;
    
    nsCOMPtr<nsICookieManager> cookieManager = 
            do_GetService (NS_COOKIEMANAGER_CONTRACTID);
    if (!cookieManager) return NULL;

    nsCOMPtr<nsISimpleEnumerator> cookieEnumerator;
    cookieManager->GetEnumerator (getter_AddRefs(cookieEnumerator));
    NS_ENSURE_TRUE (cookieEnumerator, NULL);

    PRBool enumResult;
    for (cookieEnumerator->HasMoreElements(&enumResult) ;
         enumResult == PR_TRUE ;
         cookieEnumerator->HasMoreElements(&enumResult))
    {
        nsCOMPtr<nsICookie> keks;
        rv = cookieEnumerator->GetNext (getter_AddRefs(keks));
        if (NS_FAILED (rv) || !keks) continue;

        EphyCookie *cookie = mozilla_cookie_to_ephy_cookie (keks);
        if (!cookie) continue;

        cookies = g_list_prepend (cookies, cookie);
    }       

    return cookies;
}

static void
impl_remove_cookie (EphyCookieManager *manager,
            const EphyCookie *cookie)
{
    nsCOMPtr<nsICookieManager> cookieManager =
        do_GetService (NS_COOKIEMANAGER_CONTRACTID);
    if (!cookieManager) return;

    nsCOMPtr<nsIIDNService> idnService
        (do_GetService ("@mozilla.org/network/idn-service;1"));
    NS_ENSURE_TRUE (idnService, );

    nsresult rv;
    nsCString host;
    rv = idnService->ConvertUTF8toACE (nsCString(cookie->domain), host);
    NS_ENSURE_SUCCESS (rv, );

    cookieManager->Remove (host,
                   nsCString(cookie->name),
                   nsCString(cookie->path),
                   PR_FALSE /* block */);
}

static void
impl_clear_cookies (EphyCookieManager *manager)
{
    nsCOMPtr<nsICookieManager> cookieManager =
        do_GetService (NS_COOKIEMANAGER_CONTRACTID);
    if (!cookieManager) return;

    cookieManager->RemoveAll ();
}
    
static GList *
impl_list_passwords (EphyPasswordManager *manager)
{
    GList *passwords = NULL;

    nsresult rv;
    nsCOMPtr<nsIPasswordManager> passwordManager =
            do_GetService (NS_PASSWORDMANAGER_CONTRACTID);
    if (!passwordManager) return NULL;

    nsCOMPtr<nsIIDNService> idnService
        (do_GetService ("@mozilla.org/network/idn-service;1"));
    NS_ENSURE_TRUE (idnService, NULL);

    nsCOMPtr<nsISimpleEnumerator> passwordEnumerator;
    passwordManager->GetEnumerator (getter_AddRefs(passwordEnumerator));
    NS_ENSURE_TRUE (passwordEnumerator, NULL);

    PRBool enumResult;
    for (passwordEnumerator->HasMoreElements(&enumResult) ;
         enumResult == PR_TRUE ;
         passwordEnumerator->HasMoreElements(&enumResult))
    {
        nsCOMPtr<nsIPassword> nsPassword;
        passwordEnumerator->GetNext (getter_AddRefs(nsPassword));
        if (!nsPassword) continue;

        nsCString transfer;
        rv = nsPassword->GetHost (transfer);
        if (NS_FAILED (rv)) continue;

        nsCString host;
        idnService->ConvertACEtoUTF8 (transfer, host);

        nsString unicodeName;
        rv = nsPassword->GetUser (unicodeName);
        if (NS_FAILED (rv)) continue;

        nsCString userName;
        NS_UTF16ToCString (unicodeName,
                   NS_CSTRING_ENCODING_UTF8, userName);

        rv = nsPassword->GetPassword (unicodeName);
        if (NS_FAILED (rv)) continue;

        nsCString userPassword;
        NS_UTF16ToCString (unicodeName,
                   NS_CSTRING_ENCODING_UTF8, userPassword);

        EphyPasswordInfo *p = g_new0 (EphyPasswordInfo, 1);

        p->host = g_strdup (host.get());
        p->username = g_strdup (userName.get());
        p->password = g_strdup (userPassword.get());

        passwords = g_list_prepend (passwords, p);
    }

    return passwords;
}

static void
impl_remove_password (EphyPasswordManager *manager,
              EphyPasswordInfo *info)
{
        nsCOMPtr<nsIPasswordManager> pm =
                        do_GetService (NS_PASSWORDMANAGER_CONTRACTID);
    if (!pm) return;

    nsCOMPtr<nsIIDNService> idnService
        (do_GetService ("@mozilla.org/network/idn-service;1"));
    NS_ENSURE_TRUE (idnService, );

    nsresult rv;
    nsCString host;
    rv = idnService->ConvertUTF8toACE (nsCString(info->host), host);
    NS_ENSURE_SUCCESS (rv, );

    nsString userName;
    NS_CStringToUTF16 (nsCString(info->username),
               NS_CSTRING_ENCODING_UTF8, userName);
    pm->RemoveUser (host, userName);
}

static void
impl_add_password (EphyPasswordManager *manager,
                  EphyPasswordInfo *info)
{
        nsCOMPtr<nsIPasswordManager> pm =
                        do_GetService (NS_PASSWORDMANAGER_CONTRACTID);
       if (!pm) return;

       nsCOMPtr<nsIIDNService> idnService
               (do_GetService ("@mozilla.org/network/idn-service;1"));
       NS_ENSURE_TRUE (idnService, );

       nsresult rv;
       nsCString host;
       rv = idnService->ConvertUTF8toACE (nsCString(info->host), host);
       NS_ENSURE_SUCCESS (rv, );

       nsString username;
       NS_CStringToUTF16 (nsCString(info->username),
                          NS_CSTRING_ENCODING_UTF8, username);

       nsString password;
       NS_CStringToUTF16 (nsCString(info->password),
                          NS_CSTRING_ENCODING_UTF8, password);

       pm->AddUser(host, username, password);
}

static void
impl_permission_manager_add (EphyPermissionManager *manager,
                 const char *host,
                 const char *type,
                 EphyPermission permission)
{
    /* can only set allow or deny */
    g_return_if_fail (permission != EPHY_PERMISSION_DEFAULT);
    g_return_if_fail (type != NULL && type[0] != '\0');

        nsCOMPtr<nsIPermissionManager> pm
        (do_GetService (NS_PERMISSIONMANAGER_CONTRACTID));
    if (!pm) return;

    nsCOMPtr<nsIURI> uri;
        EphyUtils::NewURI(getter_AddRefs(uri), nsCString(host));
    if (!uri) return;

    gboolean allow = (permission == EPHY_PERMISSION_ALLOWED);

    pm->Add (uri, type,
         allow ? (PRUint32) nsIPermissionManager::ALLOW_ACTION :
             (PRUint32) nsIPermissionManager::DENY_ACTION);
}

static void
impl_permission_manager_remove (EphyPermissionManager *manager,
                const char *host,
                const char *type)
{
        nsCOMPtr<nsIPermissionManager> pm
        (do_GetService (NS_PERMISSIONMANAGER_CONTRACTID));
    if (!pm) return;

    pm->Remove (nsCString (host), type);
}

static void
impl_permission_manager_clear (EphyPermissionManager *manager)
{
        nsCOMPtr<nsIPermissionManager> pm
        (do_GetService (NS_PERMISSIONMANAGER_CONTRACTID));
    if (!pm) return;

    pm->RemoveAll ();
}

EphyPermission
impl_permission_manager_test (EphyPermissionManager *manager,
                  const char *host,
                  const char *type)
{
    g_return_val_if_fail (type != NULL && type[0] != '\0', EPHY_PERMISSION_DEFAULT);

        nsCOMPtr<nsIPermissionManager> pm
        (do_GetService (NS_PERMISSIONMANAGER_CONTRACTID));
    if (!pm) return EPHY_PERMISSION_DEFAULT;

    nsCOMPtr<nsIURI> uri;
        EphyUtils::NewURI(getter_AddRefs(uri), nsCString (host));
        if (!uri) return EPHY_PERMISSION_DEFAULT;

    nsresult rv;
    PRUint32 action;
    rv = pm->TestPermission (uri, type, &action);
    NS_ENSURE_SUCCESS (rv, EPHY_PERMISSION_DEFAULT);

    EphyPermission permission;

    switch (action)
    {
        case nsIPermissionManager::ALLOW_ACTION:
            permission = EPHY_PERMISSION_ALLOWED;
            break;
        case nsIPermissionManager::DENY_ACTION:
            permission = EPHY_PERMISSION_DENIED;
            break;
        case nsIPermissionManager::UNKNOWN_ACTION:
        default:
            permission = EPHY_PERMISSION_DEFAULT;
            break;
    }

    return permission;
}

GList *
impl_permission_manager_list (EphyPermissionManager *manager,
                  const char *type)
{
    GList *list = NULL;

        nsCOMPtr<nsIPermissionManager> pm
        (do_GetService (NS_PERMISSIONMANAGER_CONTRACTID));
    if (!pm) return NULL;

    nsCOMPtr<nsISimpleEnumerator> pe;
    pm->GetEnumerator(getter_AddRefs(pe));
    NS_ENSURE_TRUE (pe, NULL);
    
    PRBool hasMore;
    while (NS_SUCCEEDED (pe->HasMoreElements (&hasMore)) && hasMore)
    {
        nsCOMPtr<nsISupports> element;
        pe->GetNext (getter_AddRefs (element));
        
        nsCOMPtr<nsIPermission> perm (do_QueryInterface (element));
        if (!perm) continue;

        nsresult rv;
        nsCString str;
        rv = perm->GetType(str);
        if (NS_FAILED (rv)) continue;

        if (strcmp (str.get(), type) == 0)
        {
            EphyPermissionInfo *info = 
                mozilla_permission_to_ephy_permission (perm);

            if (info != NULL)
            {
                list = g_list_prepend (list, info);
            }
        }
    }

    return list;
}

static GtkWidget * 
impl_open_window (EphyEmbedSingle *single,
          EphyEmbed *parent,
          const char *address,
          const char *name,
          const char *features)
{
    nsresult rv;
    AutoJSContextStack stack;
    rv = stack.Init ();
    if (NS_FAILED (rv)) return NULL;

    nsCOMPtr<nsIDOMWindow> domWindow;
    if (parent)
    {
        EphyBrowser *browser;

        browser = (EphyBrowser *) _mozilla_embed_get_ephy_browser (MOZILLA_EMBED(parent));
        g_return_val_if_fail (browser != NULL, NULL);

        browser->GetDOMWindow (getter_AddRefs (domWindow));
    }

    nsCOMPtr<nsIWindowWatcher> wWatch(do_GetService ("@mozilla.org/embedcomp/window-watcher;1"));
    nsCOMPtr<nsIDOMWindow> newWindow;
    wWatch->OpenWindow (domWindow, address, name, features, nsnull,
                getter_AddRefs (newWindow));

    return EphyUtils::FindEmbed (newWindow);
}

#ifdef ENABLE_CERTIFICATE_MANAGER

static gboolean
impl_remove_certificate (EphyCertificateManager *manager,
             EphyX509Cert *cert)
{
    nsresult rv;

    nsCOMPtr<nsIX509CertDB> certDB;
    certDB = do_GetService (NS_X509CERTDB_CONTRACTID);
    if (!certDB) return FALSE;

        nsCOMPtr<nsIX509Cert> mozCert;
        rv = mozilla_x509_cert_get_mozilla_cert (MOZILLA_X509_CERT (cert),
                         getter_AddRefs (mozCert));
    if (NS_FAILED (rv)) return FALSE;

    rv = certDB->DeleteCertificate (mozCert);
    if (NS_FAILED (rv)) return FALSE;

        return TRUE;
}

#define NICK_DELIMITER PRUnichar('\001')

static GList *
retrieveCerts (PRUint32 type)
{
    nsresult rv;

    nsCOMPtr<nsIX509CertDB> certDB;
    certDB = do_GetService (NS_X509CERTDB_CONTRACTID);
    if (!certDB) return NULL;

    PRUint32 count;
    PRUnichar **certNameList = NULL;

    rv = certDB->FindCertNicknames (NULL, type, &count, &certNameList);
    if (NS_FAILED (rv)) return NULL;

    LOG("Certificates found: %i", count);

    GList *list = NULL;
    for (PRUint32 i = 0; i < count; i++)
    {
        /* HACK HACK, this is EVIL, the string for each cert is:
             <DELIMITER>nicknameOrEmailAddress<DELIMITER>dbKey
           So we need to chop off the dbKey to look it up in the database.
           
           https://bugzilla.mozilla.org/show_bug.cgi?id=214742
        */
        nsCString full_string;
        NS_UTF16ToCString (nsString(certNameList[i]),
                   NS_CSTRING_ENCODING_UTF8, full_string);

        const char *key = full_string.get();
        char *pos = strrchr (key, NICK_DELIMITER);
        if (!pos) continue;

        nsCOMPtr<nsIX509Cert> mozilla_cert;
        rv = certDB->FindCertByDBKey (pos, NULL, getter_AddRefs (mozilla_cert));
        if (NS_FAILED (rv)) continue;

        MozillaX509Cert *cert = mozilla_x509_cert_new (mozilla_cert);
        list = g_list_prepend (list, cert);
    }

    NS_FREE_XPCOM_ALLOCATED_POINTER_ARRAY (count, certNameList);
    return list;
}

static GList *
impl_get_certificates (EphyCertificateManager *manager,
               EphyX509CertType type)
{
    int moz_type = nsIX509Cert::USER_CERT;
    switch (type)
    {
        case PERSONAL_CERTIFICATE:
            moz_type = nsIX509Cert::USER_CERT;
            break;
        case SERVER_CERTIFICATE:
            moz_type = nsIX509Cert::SERVER_CERT;
            break;
        case CA_CERTIFICATE:
            moz_type = nsIX509Cert::CA_CERT;
            break;
    }
    return retrieveCerts (moz_type);
}

static gboolean
impl_import (EphyCertificateManager *manager,
         const gchar *file)
{
    nsresult rv;
    nsCOMPtr<nsIX509CertDB> certDB;
    certDB = do_GetService (NS_X509CERTDB_CONTRACTID);
    if (!certDB) return FALSE;

    nsCOMPtr<nsILocalFile> localFile;
    localFile = do_CreateInstance (NS_LOCAL_FILE_CONTRACTID);

    // TODO Is this correct ?
    nsString path;
    NS_CStringToUTF16 (nsCString(file),
               NS_CSTRING_ENCODING_UTF8, path);


    localFile->InitWithPath (path);
    rv = certDB->ImportPKCS12File(NULL, localFile);
    if (NS_FAILED (rv)) return FALSE;

    return TRUE;
}

#endif /* ENABLE_CERTIFICATE_MANAGER */

static void
mozilla_embed_single_get_property (GObject *object,
                   guint prop_id,
                   GValue *value,
                   GParamSpec *pspec)
{
    EphyEmbedSingle *single = EPHY_EMBED_SINGLE (object);

    switch (prop_id)
    {
        case PROP_NETWORK_STATUS:
            g_value_set_boolean (value, ephy_embed_single_get_network_status (single));
            break;
    }
}

static void
mozilla_embed_single_set_property (GObject *object,
                   guint prop_id,
                   const GValue *value,
                   GParamSpec *pspec)
{
    EphyEmbedSingle *single = EPHY_EMBED_SINGLE (object);

    switch (prop_id)
    {
        case PROP_NETWORK_STATUS:
            ephy_embed_single_set_network_status (single, g_value_get_boolean (value));
            break;
    }
}
static void
mozilla_embed_single_class_init (MozillaEmbedSingleClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    parent_class = (GObjectClass *) g_type_class_peek_parent (klass);

    object_class->dispose = mozilla_embed_single_dispose;
    object_class->finalize = mozilla_embed_single_finalize;
    object_class->get_property = mozilla_embed_single_get_property;
    object_class->set_property = mozilla_embed_single_set_property;

    g_object_class_override_property (object_class, PROP_NETWORK_STATUS, "network-status");

    g_type_class_add_private (object_class, sizeof (MozillaEmbedSinglePrivate));
}

static void
ephy_embed_single_iface_init (EphyEmbedSingleIface *iface)
{
    iface->init = impl_init;
    iface->clear_cache = impl_clear_cache;
    iface->clear_auth_cache = impl_clear_auth_cache;
    iface->set_network_status = impl_set_network_status;
    iface->get_network_status = impl_get_network_status;
    iface->get_font_list = impl_get_font_list;
    iface->open_window = impl_open_window;
    iface->get_backend_name = impl_get_backend_name;
}

static void
ephy_cookie_manager_iface_init (EphyCookieManagerIface *iface)
{
    iface->list = impl_list_cookies;
    iface->remove = impl_remove_cookie;
    iface->clear = impl_clear_cookies;
}

static void
ephy_password_manager_iface_init (EphyPasswordManagerIface *iface)
{
    iface->add = impl_add_password;
    iface->remove = impl_remove_password;
    iface->list = impl_list_passwords;
}

static void
ephy_permission_manager_iface_init (EphyPermissionManagerIface *iface)
{
    iface->add = impl_permission_manager_add;
    iface->remove = impl_permission_manager_remove;
    iface->clear = impl_permission_manager_clear;
    iface->test = impl_permission_manager_test;
    iface->list = impl_permission_manager_list;
}

#ifdef ENABLE_CERTIFICATE_MANAGER

static void
ephy_certificate_manager_iface_init (EphyCertificateManagerIface *iface)
{
    iface->get_certificates = impl_get_certificates;
    iface->remove_certificate = impl_remove_certificate;
    iface->import = impl_import;
}

#endif /* ENABLE_CERTIFICATE_MANAGER */