path: root/plugins/groupwise-features/proxy.c

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Shreyas Srinivasan <sshreyas@novell.com>
 *  Sankar P <psankar@novell.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdlib.h>
#include <glib/gi18n.h>

#include <libedataserverui/e-contact-store.h>

#include <e-util/e-util.h>
#include <e-util/e-alert-dialog.h>
#include <e-util/e-util-private.h>
#include <e-gw-container.h>
#include <e-gw-connection.h>
#include <e-gw-message.h>

#include <mail/em-account-editor.h>
#include <mail/em-config.h>
#include <mail/mail-ops.h>
#include <mail/e-mail-backend.h>
#include <shell/e-shell.h>
#include <libedataserver/e-account.h>
#include <libedataserver/e-account-list.h>
#include <e-util/e-icon-factory.h>

#include <libedataserverui/e-passwords.h>
#include <libedataserverui/e-name-selector.h>
#include <proxy.h>
#include <string.h>

#define GW(name) e_builder_get_widget (priv->builder, name)

#define ACCOUNT_PICTURE 0
#define ACCOUNT_NAME 1
#define PROXY_ADD_DIALOG 2
#define PROXY_EDIT_DIALOG 3

static GObjectClass *parent_class = NULL;

static gboolean proxy_page_changed_cb (GtkNotebook *notebook, GtkWidget *page, gint num, EAccount *account);

struct _proxyDialogPrivate {
    /* UI data for the Add/Edit Proxy dialog*/
    GtkBuilder *builder;
    /* UI data for Proxy Tab*/
    GtkBuilder *builder_tab;

    /* Widgets */
    GtkWidget *main;

    /*name selector dialog*/
    ENameSelector *proxy_name_selector;

    GtkTreeView *tree;
    GtkTreeStore *store;

    /* Check Boxes for storing proxy priveleges*/
    GtkWidget *tab_dialog;
    GtkWidget *account_name;
    GtkWidget *mail_read;
    GtkWidget *mail_write;
    GtkWidget *app_read;
    GtkWidget *app_write;
    GtkWidget *note_read;
    GtkWidget *note_write;
    GtkWidget *task_read;
    GtkWidget *task_write;
    GtkWidget *alarms;
    GtkWidget *notifications;
    GtkWidget *options;
    GtkWidget *private;
        gchar *help_section;

    GList *proxy_list;
};

static void
proxy_dialog_dispose (GObject *object)
{
    proxyDialog *prd = (proxyDialog *) object;

    g_return_if_fail (IS_PROXY_DIALOG (prd));

    if (parent_class->dispose)
        (*parent_class->dispose) (object);
}

static void
free_proxy_handler (proxyHandler *handler)
{
    if (handler->uniqueid)
        g_free (handler->uniqueid);

    if (handler->proxy_name)
        g_free (handler->proxy_name);

    if (handler->proxy_email)
        g_free (handler->proxy_email);

    handler->uniqueid = NULL;
    handler->proxy_name = NULL;
    handler->proxy_email = NULL;
}

void
free_proxy_list (GList *proxy_list)
{
    if (proxy_list) {
        g_list_foreach (proxy_list, (GFunc) free_proxy_handler, NULL);
        g_list_free (proxy_list);
        proxy_list = NULL;
    }
}

static void
proxy_dialog_finalize (GObject *object)
{
    proxyDialog *prd = (proxyDialog *) object;
    proxyDialogPrivate *priv;

    g_return_if_fail (IS_PROXY_DIALOG (prd));
    priv = prd->priv;

    if (priv->proxy_name_selector)
        g_object_unref (priv->proxy_name_selector);

    if (priv) {
        free_proxy_list (priv->proxy_list);
        g_free (priv->help_section);
        g_object_unref (priv->builder_tab);
        g_free (prd->priv);
        prd->priv = NULL;
    }

    prd = NULL;
    if (parent_class->finalize)
        (* parent_class->finalize) (object);
}

/* Class initialization function for the Proxy*/
static void
proxy_dialog_class_init (GObjectClass *object)
{
    proxyDialogClass *klass;
    GObjectClass *object_class;

    klass = PROXY_DIALOG_CLASS (object);
    parent_class = g_type_class_peek_parent (klass);
    object_class = G_OBJECT_CLASS (klass);

    object_class->finalize = proxy_dialog_finalize;
    object_class->dispose = proxy_dialog_dispose;
}

static void
proxy_dialog_init (GObject *object)
{
    proxyDialog *prd;
    proxyDialogPrivate *priv;

    prd = PROXY_DIALOG (object);
    priv = g_new0 (proxyDialogPrivate, 1);

    prd->priv = priv;

    prd->cnc = NULL;
    priv->tab_dialog = NULL;
    priv->builder = NULL;
    priv->builder_tab = NULL;
    priv->main = NULL;
    priv->tree = NULL;
    priv->store = NULL;
    priv->proxy_name_selector = NULL;
    priv->account_name = NULL;
    priv->mail_read = NULL;
    priv->mail_write = NULL;
    priv->app_read = NULL;
    priv->app_write = NULL;
    priv->note_read = NULL;
    priv->note_write = NULL;
    priv->task_read = NULL;
    priv->task_write = NULL;
    priv->alarms = NULL;
    priv->notifications = NULL;
    priv->options = NULL;
    priv->private = NULL;
    priv->help_section = NULL;

    priv->proxy_list = NULL;
}

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

  if (type == 0) {
    static const GTypeInfo info = {
      sizeof (proxyDialogClass),
      NULL,   /* base_init */
      NULL,   /* base_finalize */
      (GClassInitFunc) proxy_dialog_class_init,   /* class_init */
      NULL,   /* class_finalize */
      NULL,   /* class_data */
      sizeof (proxyDialog),
     0,      /* n_preallocs */
     (GInstanceInitFunc) proxy_dialog_init,
    NULL    /* instance_init */
    };

    type = g_type_register_static (G_TYPE_OBJECT,
                                   "proxyDialogType",
                                   &info, 0);
  }

  return type;
}

proxyDialog *
proxy_dialog_new (void)
{
    proxyDialog *prd;

    prd = g_object_new (TYPE_PROXY_DIALOG, NULL);

    return prd;
}

static gint
proxy_get_permissions_from_dialog (EAccount *account)
{
    gint permissions;
    proxyDialogPrivate *priv;
    proxyDialog *prd = NULL;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;
    permissions = 0;

    if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->mail_read)))
        permissions |= E_GW_PROXY_MAIL_READ;

    if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->mail_write)))
        permissions |= E_GW_PROXY_MAIL_WRITE;

    if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->app_read)))
        permissions |= E_GW_PROXY_APPOINTMENT_READ;

    if (gtk_toggle_button_get_active ( GTK_TOGGLE_BUTTON (priv->app_write)))
        permissions |= E_GW_PROXY_APPOINTMENT_WRITE;

    if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->task_read)))
        permissions |= E_GW_PROXY_TASK_READ;

    if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->task_write)))
        permissions |= E_GW_PROXY_TASK_WRITE;

    if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->note_read)))
        permissions |= E_GW_PROXY_NOTES_READ;

    if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->note_write)))
        permissions |= E_GW_PROXY_NOTES_WRITE;

    if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->alarms)))
        permissions |= E_GW_PROXY_GET_ALARMS;

    if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->notifications)))
        permissions |= E_GW_PROXY_GET_NOTIFICATIONS;

    if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->options)))
        permissions |= E_GW_PROXY_MODIFY_FOLDERS;

    if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->private)))
        permissions |= E_GW_PROXY_READ_PRIVATE;

    return permissions;
}

static gint
proxy_dialog_store_widgets_data (EAccount *account, gint32 dialog, GtkWindow *parent)
{
    GtkTreeIter iter;
    GtkTreeSelection* account_select;
    GtkTreeModel *model;
    proxyHandler *new_proxy = NULL;
    proxyDialogPrivate *priv;
    gchar *account_mailid;
    proxyDialog *prd = NULL;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;

    switch (dialog)
    {
        case PROXY_ADD_DIALOG:
            {
                ENameSelectorEntry *name_selector_entry;
                EDestinationStore *destination_store;
                GList *destinations, *tmp;
                gchar *name, *email;
                GList *existing_list;
                name_selector_entry = e_name_selector_peek_section_entry (priv->proxy_name_selector, "Add User");
                destination_store = e_name_selector_entry_peek_destination_store (E_NAME_SELECTOR_ENTRY (
                            name_selector_entry));
                destinations = e_destination_store_list_destinations (destination_store);
                tmp = destinations;

                if (!tmp) {
                    e_alert_run_dialog_for_args (parent,
                                     "org.gnome.evolution.proxy:no-user",
                                     NULL, NULL);
                    return -1;
                }

                for (; tmp != NULL; tmp = g_list_next (tmp)) {
                    email = NULL;
                    email = (gchar *)e_destination_get_email (tmp->data);

                    if (g_str_equal(email, ""))
                        continue;

                    if (g_strrstr (email, "@") == NULL) {
                        e_alert_run_dialog_for_args (parent,
                                         "org.gnome.evolution.proxy:invalid-user",
                                         email, NULL);
                        return -1;
                    }
                    if (!g_ascii_strcasecmp (e_gw_connection_get_user_email (prd->cnc), email)) {
                        e_alert_run_dialog_for_args (parent,
                                         "org.gnome.evolution.proxy:invalid-user",
                                         email, NULL);
                        return -1;
                    }

                    /*check whether already exists*/
                    existing_list = priv->proxy_list;

                    for (;existing_list; existing_list = g_list_next (existing_list)) {
                        new_proxy = (proxyHandler *) existing_list->data;
                        if (!g_ascii_strcasecmp (new_proxy->proxy_email, email)) {
                            if (new_proxy->flags & E_GW_PROXY_DELETED) {
                                new_proxy->permissions = proxy_get_permissions_from_dialog (account);
                                if (new_proxy->flags & E_GW_PROXY_NEW)
                                    new_proxy->flags = E_GW_PROXY_NEW;
                                else
                                    new_proxy->flags = E_GW_PROXY_EDITED;
                                return 0;
                            }

                            e_alert_run_dialog_for_args (parent,
                                             "org.gnome.evolution.proxy:user-is-proxy",
                                             email, NULL);
                            return -1;
                        }
                    }
                }
                tmp = destinations;

                for (; tmp != NULL; tmp = g_list_next (tmp)) {
                    name = NULL; email = NULL;
                    email = (gchar *) e_destination_get_email (tmp->data);

                    if (g_str_equal(email, ""))
                        continue;

                    name = (gchar *) e_destination_get_name (tmp->data);
                    new_proxy = (proxyHandler *) g_malloc0 (sizeof (proxyHandler));

                    if (name)
                        new_proxy->proxy_name = g_strdup (name);
                    else
                        new_proxy->proxy_name = g_strdup (email);

                    new_proxy->proxy_email = g_strdup (email);
                    new_proxy->uniqueid = NULL;
                    new_proxy->flags =  E_GW_PROXY_NEW;
                    new_proxy->permissions = proxy_get_permissions_from_dialog (account);

                    priv->proxy_list = g_list_append (priv->proxy_list, new_proxy);
                }
            }
            break;
        case PROXY_EDIT_DIALOG:
            account_select = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree));
            gtk_tree_selection_get_selected (account_select, &model, &iter);
            gtk_tree_model_get (model, &iter, ACCOUNT_NAME, &account_mailid, -1);
            account_mailid = g_strrstr (account_mailid, "\n") + 1;
            new_proxy = proxy_get_item_from_list (account, account_mailid);

            if (!new_proxy->flags & E_GW_PROXY_NEW)
                new_proxy->flags = E_GW_PROXY_EDITED;

            new_proxy->permissions = proxy_get_permissions_from_dialog (account);
            break;
        default:
            return -1;
    }

    return 0;
}

static gboolean
proxy_dialog_initialize_widgets (EAccount *account)
{
    proxyDialogPrivate *priv;
    proxyDialog *prd = NULL;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;
    priv->account_name = GW ("proxy_account_name");
    priv->mail_read = GW ("mailRead");
    priv->mail_write = GW ("mailWrite");
    priv->app_read = GW ("appRead");
    priv->app_write = GW ("appWrite");
    priv->note_read = GW ("noteRead");
    priv->note_write = GW ("noteWrite");
    priv->task_read = GW ("taskRead");
    priv->task_write = GW ("taskWrite");
    priv->alarms = GW ("alarms");
    priv->notifications = GW ("notifications");
    priv->options = GW ("modify_rules");
    priv->private = GW ("read_private");

    return (priv->account_name
        && priv->mail_read
        && priv->mail_write
        && priv->app_read
        && priv->app_write
        && priv->note_read
        && priv->note_write
        && priv->task_read
        && priv->task_write
        && priv->alarms
        && priv->notifications
        && priv->options
        && priv->private);
}

static EGwConnection *
proxy_get_cnc (EAccount *account, GtkWindow *parent_window)
{
    EGwConnection *cnc;
    const gchar *failed_auth;
    gchar *uri, *key, *prompt, *password = NULL;
    CamelURL *url;
    const gchar *poa_address, *use_ssl, *soap_port;
    gboolean remember;

    url = camel_url_new (account->source->url, NULL);
    if (url == NULL)
        return NULL;
    poa_address = url->host;
    if (!poa_address || strlen (poa_address) ==0)
        return NULL;

        soap_port = camel_url_get_param (url, "soap_port");
        if (!soap_port || strlen (soap_port) == 0)
                soap_port = "7191";
    use_ssl = camel_url_get_param (url, "use_ssl");

    key =  g_strdup_printf ("groupwise://%s@%s/", url->user, poa_address);

    if (use_ssl && !g_str_equal (use_ssl, "never"))
        uri = g_strdup_printf ("https://%s:%s/soap", poa_address, soap_port);
    else
        uri = g_strdup_printf ("http://%s:%s/soap", poa_address, soap_port);

    failed_auth = "";
    cnc = NULL;

    prompt = g_strdup_printf (_("%sEnter password for %s (user %s)"),
            failed_auth, poa_address, url->user);

    password = e_passwords_get_password ("Groupwise", key);
    if (!password)
        password = e_passwords_ask_password (prompt, "Groupwise", key, prompt,
                E_PASSWORDS_REMEMBER_FOREVER|E_PASSWORDS_SECRET, &remember, parent_window);
    g_free (prompt);

    cnc = e_gw_connection_new (uri, url->user, password);
    if (!E_IS_GW_CONNECTION(cnc) && use_ssl && g_str_equal (use_ssl, "when-possible")) {
        gchar *http_uri = g_strconcat ("http://", uri + 8, NULL);
        cnc = e_gw_connection_new (http_uri, url->user, password);
        g_free (http_uri);
    }

    camel_url_free (url);
    return cnc;
}

void
proxy_abort (GtkWidget *button, EConfigHookItemFactoryData *data)
{
    EMConfigTargetAccount *target_account;
    EAccount *account;
    proxyDialog *prd = NULL;

    target_account = (EMConfigTargetAccount *)data->config->target;
    account = target_account->account;
    prd = g_object_get_data ((GObject *)account, "prd");

    if (!prd || !prd->priv || !prd->priv->proxy_list)
        return;

    g_object_unref (prd);
    prd = NULL;
}

void
proxy_commit (GtkWidget *button, EConfigHookItemFactoryData *data)
{
    EAccount *account;
    EMConfigTargetAccount *target_account;
    proxyDialogPrivate *priv;
    GList *list_iter;
    proxyHandler *aclInstance;
    proxyDialog *prd = NULL;

    target_account = (EMConfigTargetAccount *)data->config->target;
    account = target_account->account;
    prd = g_object_get_data ((GObject *)account, "prd");

    /* In case of non-GroupWise preferences edit, "prd" will be NULL. */
    if (!prd || !prd->priv || !prd->priv->proxy_list)
        return;

    priv = prd->priv;
    list_iter = priv->proxy_list;
    for (;list_iter; list_iter = g_list_next (list_iter)) {
        aclInstance = (proxyHandler *) list_iter->data;

        /* Handle case where the structure is new and deleted*/
        if ( !((aclInstance->flags & E_GW_PROXY_NEW) && (aclInstance->flags & E_GW_PROXY_DELETED))) {

            if ( !E_IS_GW_CONNECTION (prd->cnc))    /* Add check in case the connection request fails*/
                prd->cnc = proxy_get_cnc (account, GTK_WINDOW (gtk_widget_get_toplevel (button)));

            if (aclInstance->flags & E_GW_PROXY_NEW )
                e_gw_connection_add_proxy (prd->cnc, aclInstance);

            if ((aclInstance->flags & E_GW_PROXY_DELETED) && !(aclInstance->flags & E_GW_PROXY_NEW))
                e_gw_connection_remove_proxy (prd->cnc, aclInstance);

            if (aclInstance->flags & E_GW_PROXY_EDITED)
                e_gw_connection_modify_proxy (prd->cnc, aclInstance);
        }
    }

    g_object_unref (prd);
    prd = NULL;
}

static void
proxy_setup_meta_tree_view (EAccount *account)
{
    proxyDialog *prd = NULL;
    proxyDialogPrivate *priv;
    GtkTreeSelection *selection;
    GtkCellRenderer *renderer;
    GtkTreeViewColumn *column;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;
    renderer = g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF,
                 "xpad", 4,
                 "ypad", 4,
                 NULL);
    column = gtk_tree_view_column_new_with_attributes ("Picture", renderer, "pixbuf", ACCOUNT_PICTURE, NULL);
    gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree), column);
    renderer = gtk_cell_renderer_text_new ();
    column = gtk_tree_view_column_new_with_attributes ("Name", renderer, "text", ACCOUNT_NAME, NULL);
    gtk_tree_view_append_column (GTK_TREE_VIEW (priv->tree), column);

    gtk_tree_view_set_model (priv->tree, GTK_TREE_MODEL (priv->store));
    selection = gtk_tree_view_get_selection (priv->tree);
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_BROWSE);
}

static void
proxy_update_tree_view (EAccount *account)
{
    proxyDialog *prd = NULL;
    GtkTreeIter iter;
    GdkPixbuf *broken_image = NULL;
    GList *list_iter;
    proxyHandler *aclInstance;
    gchar *file_name = e_icon_factory_get_icon_filename ("avatar-default", GTK_ICON_SIZE_DIALOG);
    proxyDialogPrivate *priv;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;
    broken_image = gdk_pixbuf_new_from_file (file_name, NULL);

    gtk_tree_store_clear (priv->store);
    list_iter = priv->proxy_list;

    for (;list_iter; list_iter = g_list_next (list_iter)) {
        aclInstance = (proxyHandler *) list_iter->data;

        if (!(aclInstance->flags & E_GW_PROXY_DELETED )) {
            gtk_tree_store_append (priv->store, &iter, NULL);
            gtk_tree_store_set (priv->store, &iter, 0, broken_image, 1, g_strconcat(aclInstance->proxy_name,"\n",aclInstance->proxy_email, NULL), -1);
        }
    }

    g_free (file_name);
    if (broken_image)
        g_object_unref (broken_image);

    /*Fixme : Desensitize buttons if the list is Null*/
    gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree), GTK_TREE_MODEL (priv->store));
}

GtkWidget*
org_gnome_proxy (EPlugin *epl, EConfigHookItemFactoryData *data)
{
    EMConfigTargetAccount *target_account;
    EShell *shell;
    EShellBackend *shell_backend;
    EMailSession *session;
    EAccount *account;
    GtkButton *addProxy, *removeProxy, *editProxy;
    proxyDialog *prd;
    proxyDialogPrivate *priv;
    CamelOfflineStore *store;
    gint pag_num;

    shell = e_shell_get_default ();
    shell_backend = e_shell_get_backend_by_name (shell, "mail");
    session = e_mail_backend_get_session (E_MAIL_BACKEND (shell_backend));

    target_account = (EMConfigTargetAccount *)data->config->target;
    account = target_account->account;
    /* We are using some g_object_set on this. We shuold also avoid double-free later. So reffing */
    g_object_ref (account);

    store = (CamelOfflineStore *) camel_session_get_service (
        CAMEL_SESSION (session),
        e_account_get_string (account, E_ACCOUNT_SOURCE_URL),
        CAMEL_PROVIDER_STORE, NULL);
    if (store == NULL)
        return NULL;

    if (g_strrstr (e_account_get_string(account, E_ACCOUNT_SOURCE_URL), "groupwise://"))
    {
        prd = proxy_dialog_new ();
        g_object_set_data_full ((GObject *) account, "prd", prd, (GDestroyNotify) g_object_unref);
        priv = prd->priv;

        priv->builder_tab = gtk_builder_new ();
        e_load_ui_builder_definition (priv->builder_tab, "proxy-listing.ui");

        if (account->enabled && camel_offline_store_get_online (store)) {
            priv->tab_dialog = GTK_WIDGET (e_builder_get_widget (priv->builder_tab, "proxy_vbox"));
            priv->tree = GTK_TREE_VIEW (e_builder_get_widget (priv->builder_tab, "proxy_access_list"));
            priv->store =  gtk_tree_store_new (2,
                               GDK_TYPE_PIXBUF,
                               G_TYPE_STRING
                );
            proxy_setup_meta_tree_view (account);

            addProxy = (GtkButton *) e_builder_get_widget (priv->builder_tab, "add_proxy");
            removeProxy = (GtkButton *) e_builder_get_widget (priv->builder_tab, "remove_proxy");
            editProxy = (GtkButton *) e_builder_get_widget (priv->builder_tab, "edit_proxy");

            g_signal_connect (addProxy, "clicked", G_CALLBACK(proxy_add_account), account);
            g_signal_connect (removeProxy, "clicked", G_CALLBACK(proxy_remove_account), account);
            g_signal_connect (editProxy, "clicked", G_CALLBACK(proxy_edit_account), account);

            priv->proxy_list = NULL;
        } else if (account->enabled) {
            GtkWidget *label;
            priv->tab_dialog = gtk_vbox_new (TRUE, 10);
            /*To Translators: In this case, Proxy does not mean something like 'HTTP Proxy', but a GroupWise feature by which one person can send/read mails/appointments using another person's identity without knowing his password, for example if that other person is on vacation*/
            label = gtk_label_new (_("The Proxy tab will be available only when the account is online."));
            gtk_box_pack_start ((GtkBox *)priv->tab_dialog, label, TRUE, TRUE, 10);
        } else {
            GtkWidget *label;
            priv->tab_dialog = gtk_vbox_new (TRUE, 10);
            /*To Translators: In this case, Proxy does not mean something like 'HTTP Proxy', but a GroupWise feature by which one person can send/read mails/appointments using another person's identity without knowing his password, for example if that other person is on vacation*/
            label = gtk_label_new (_("The Proxy tab will be available only when the account is enabled."));
            gtk_box_pack_start ((GtkBox *)priv->tab_dialog, label, TRUE, TRUE, 10);
        }

        /*To Translators: In this case, Proxy does not mean something like 'HTTP Proxy', but a GroupWise feature by which one person can send/read mails/appointments using another person's identity without knowing his password, for example if that other person is on vacation*/
        gtk_notebook_append_page ((GtkNotebook *)(data->parent), (GtkWidget *)priv->tab_dialog, gtk_label_new (C_("GW", "Proxy")));
        g_signal_connect ((GtkNotebook *)(data->parent), "switch-page", G_CALLBACK (proxy_page_changed_cb), account);
        pag_num = gtk_notebook_page_num ((GtkNotebook *)(data->parent), (GtkWidget *)priv->tab_dialog);
        g_object_set_data ((GObject *) account, "proxy_tab_num", GINT_TO_POINTER (pag_num));
        gtk_widget_show_all (priv->tab_dialog);
    }  else if (!g_strrstr (e_account_get_string(account, E_ACCOUNT_SOURCE_URL), "groupwise://")) {
        prd = g_object_get_data ((GObject *) account, "prd");

        if (prd) {
            priv = prd->priv;

            if (priv) {
                pag_num = gtk_notebook_page_num ( (GtkNotebook *)(data->parent), (GtkWidget *) priv->tab_dialog);
                gtk_notebook_remove_page ( (GtkNotebook *)(data->parent), pag_num);
            }
        }
    }

    g_object_unref (store);

    return NULL;
}

static gboolean
proxy_page_changed_cb (GtkNotebook *notebook, GtkWidget *page, gint num, EAccount *account)
{
    proxyDialog *prd;
    proxyDialogPrivate *priv;
    gpointer val;
    gint pg_num;
    GList *list_iter;
    proxyHandler *aclInstance;

    if (g_strrstr (e_account_get_string(account, E_ACCOUNT_SOURCE_URL), "groupwise://")) {

        prd = g_object_get_data ((GObject *) account, "prd");

        if (!prd || !prd->priv)
            return TRUE;

        val = g_object_get_data ((GObject *) account, "proxy_tab_num");

        if (!val)
            return FALSE;

        pg_num = GPOINTER_TO_INT (val);

        if ((pg_num == num) && account->enabled) {
            if (!prd->cnc)
                prd->cnc = proxy_get_cnc (account, GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (notebook))));
            priv = prd->priv;

            if (e_gw_connection_get_proxy_access_list (prd->cnc, &priv->proxy_list)!= E_GW_CONNECTION_STATUS_OK)
                return FALSE;

            list_iter = priv->proxy_list;

            for (;list_iter; list_iter = g_list_next (list_iter)) {
                aclInstance = (proxyHandler *) list_iter->data;

                /* NOTE: All User Access is not supported */
                if (!g_ascii_strcasecmp (aclInstance->proxy_name, "<All User Access>")) {
                    priv->proxy_list = g_list_delete_link (priv->proxy_list, list_iter);
                    break;
                }
            }

            proxy_update_tree_view (account);
            return TRUE;
        }
    }

    return FALSE;
}

static void
proxy_cancel (GtkWidget *button, EAccount *account)
{
    proxyDialog *prd = NULL;
    proxyDialogPrivate *priv;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;
    gtk_widget_destroy (priv->main);
    g_object_unref (priv->builder);
}

static void
proxy_add_ok (GtkWidget *button, EAccount *account)
{
    proxyDialog *prd = NULL;
    proxyDialogPrivate *priv;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;

    if (proxy_dialog_store_widgets_data (account, PROXY_ADD_DIALOG, GTK_WINDOW (gtk_widget_get_toplevel (button))) < 0)
        return;

    proxy_update_tree_view (account);
    gtk_widget_destroy (priv->main);
    g_object_unref (priv->builder);
}

static void
proxy_edit_ok (GtkWidget *button, EAccount *account)
{
    proxyDialog *prd = NULL;
    proxyDialogPrivate *priv;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;

    if ( proxy_dialog_store_widgets_data (account, PROXY_EDIT_DIALOG, GTK_WINDOW (gtk_widget_get_toplevel (button))) < 0)
        return;

    proxy_update_tree_view (account);
    gtk_widget_destroy (priv->main);
    g_object_unref (priv->builder);
}

static proxyHandler *
proxy_get_item_from_list (EAccount *account, gchar *account_name)
{
    proxyDialogPrivate *priv;
    proxyDialog *prd = NULL;
    GList *list_iter;
    proxyHandler *iter;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;
    list_iter = priv->proxy_list;

    for (;list_iter; list_iter = g_list_next (list_iter)) {
        iter = (proxyHandler *) list_iter->data;

        if ( g_str_equal (iter->proxy_email,account_name))
            return iter;
    }

    return NULL;
}

static void
proxy_remove_account (GtkWidget *button, EAccount *account)
{
    GtkTreeIter iter;
        GtkTreeModel *model;
    proxyDialogPrivate *priv;
    proxyHandler *deleted;
    GtkTreeSelection* account_select;
    gchar *account_mailid;
    proxyDialog *prd = NULL;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;
    account_select = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree));

        if (gtk_tree_selection_get_selected (account_select, &model, &iter)) {
                gtk_tree_model_get (model, &iter, ACCOUNT_NAME, &account_mailid, -1);
        account_mailid = g_strrstr (account_mailid, "\n") + 1;
        deleted = proxy_get_item_from_list (account, account_mailid);

        if (deleted != NULL)
            deleted->flags |= E_GW_PROXY_DELETED;

        proxy_update_tree_view (account);
        }
}

static void
addressbook_dialog_response (ENameSelectorDialog *name_selector_dialog, gint response, gpointer user_data)
{
    gtk_widget_hide (GTK_WIDGET (name_selector_dialog));
}

static void
addressbook_entry_changed (GtkWidget *entry, gpointer user_data)
{
}

static void
address_button_clicked (GtkButton *button, EAccount *account)
{
    proxyDialog *prd;
    proxyDialogPrivate *priv;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;
    e_name_selector_show_dialog (priv->proxy_name_selector, priv->main);
}

static void
proxy_add_account (GtkWidget *button, EAccount *account)
{
    GtkButton *contacts, *cancel;
    proxyDialogPrivate *priv;
    GtkButton *okButton;
    ENameSelectorDialog *name_selector_dialog;
    ENameSelectorModel *name_selector_model;
    ENameSelectorEntry *name_selector_entry;
    GtkWidget *proxy_name, *name_box;
    proxyDialog *prd = NULL;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;

    priv->builder = gtk_builder_new ();
    e_load_ui_builder_definition (priv->builder, "proxy-add-dialog.ui");

    proxy_dialog_initialize_widgets (account);
    priv->main = e_builder_get_widget (priv->builder, "ProxyAccessRights");
    okButton = (GtkButton *) e_builder_get_widget (priv->builder,"proxy_button_ok");
    contacts = (GtkButton *) e_builder_get_widget (priv->builder,"contacts");
    cancel = (GtkButton *) e_builder_get_widget (priv->builder,"proxy_cancel");

    priv->proxy_name_selector = e_name_selector_new ();
    name_selector_dialog = e_name_selector_peek_dialog (priv->proxy_name_selector);

    g_signal_connect ((GtkWidget *)okButton, "clicked", G_CALLBACK (proxy_add_ok), account);
    g_signal_connect ((GtkWidget *)cancel, "clicked", G_CALLBACK (proxy_cancel), account);
    g_signal_connect ((GtkWidget *)contacts, "clicked", G_CALLBACK (address_button_clicked), account);
    g_signal_connect (name_selector_dialog, "response", G_CALLBACK (addressbook_dialog_response), account);
    gtk_widget_show (GTK_WIDGET (priv->main));

    name_selector_model = e_name_selector_peek_model (priv->proxy_name_selector);
    e_name_selector_model_add_section (name_selector_model, "Add User", _("Add User"), NULL);

    name_selector_entry = e_name_selector_peek_section_entry (priv->proxy_name_selector, "Add User");
    g_signal_connect (name_selector_entry, "changed",
              G_CALLBACK (addressbook_entry_changed), prd);

    proxy_name = e_builder_get_widget (priv->builder, "proxy_account_name");
    name_box = e_builder_get_widget (priv->builder, "proxy_name_box");
    gtk_widget_hide (proxy_name);
    gtk_container_add ((GtkContainer *)name_box, (GtkWidget *)name_selector_entry);
    gtk_widget_show ((GtkWidget *) name_selector_entry);
    gtk_widget_grab_focus ((GtkWidget *) name_selector_entry);
}

static void
proxy_load_edit_dialog (EAccount *account, proxyHandler *edited)
{
    proxyDialogPrivate *priv;
    proxyDialog *prd = NULL;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;
    gtk_entry_set_text ((GtkEntry *) priv->account_name, edited->proxy_email);
    gtk_widget_set_sensitive (priv->account_name, FALSE);

    if (edited->permissions & E_GW_PROXY_MAIL_READ)
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->mail_read), TRUE);

    if (edited->permissions & E_GW_PROXY_MAIL_WRITE)
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->mail_write), TRUE);

    if (edited->permissions & E_GW_PROXY_APPOINTMENT_READ)
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->app_read), TRUE);

    if (edited->permissions & E_GW_PROXY_APPOINTMENT_WRITE)
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->app_write), TRUE);

    if (edited->permissions & E_GW_PROXY_NOTES_READ)
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->note_read), TRUE);

    if (edited->permissions & E_GW_PROXY_NOTES_WRITE)
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->note_write), TRUE);

    if (edited->permissions & E_GW_PROXY_TASK_READ)
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->task_read), TRUE);

    if (edited->permissions & E_GW_PROXY_TASK_WRITE)
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->task_write), TRUE);

    if (edited->permissions & E_GW_PROXY_GET_ALARMS)
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->alarms), TRUE);

    if (edited->permissions & E_GW_PROXY_GET_NOTIFICATIONS)
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->notifications), TRUE);

    if (edited->permissions & E_GW_PROXY_MODIFY_FOLDERS)
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->options), TRUE);

    if (edited->permissions & E_GW_PROXY_READ_PRIVATE)
        gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->private), TRUE);
}

static void
proxy_edit_account (GtkWidget *button, EAccount *account)
{
    GtkTreeIter iter;
        GtkTreeModel *model;
    proxyDialogPrivate *priv;
    GtkTreeSelection* account_select;
    proxyHandler *edited;
    GtkButton *okButton, *proxyCancel;
    gchar *account_mailid;
    GtkWidget *contacts;
    proxyDialog *prd = NULL;

    prd = g_object_get_data ((GObject *)account, "prd");
    priv = prd->priv;

    /*FIXME: If multiple properties dialogs are launched then the widgets lose data*/

    account_select = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree));

        if (gtk_tree_selection_get_selected (account_select, &model, &iter)) {
                gtk_tree_model_get (model, &iter, ACCOUNT_NAME, &account_mailid, -1);
        account_mailid = g_strrstr (account_mailid, "\n") + 1;
        edited = proxy_get_item_from_list (account, account_mailid);
        if (edited) {
            priv->builder = gtk_builder_new ();
            e_load_ui_builder_definition (priv->builder, "proxy-add-dialog.ui");

            priv->main = e_builder_get_widget (priv->builder, "ProxyAccessRights");
            proxy_dialog_initialize_widgets (account);
            okButton = (GtkButton *) e_builder_get_widget (priv->builder,"proxy_button_ok");
            proxyCancel = (GtkButton *) e_builder_get_widget (priv->builder,"proxy_cancel");
            contacts = e_builder_get_widget (priv->builder, "contacts");

            g_signal_connect ((GtkWidget *)okButton, "clicked", G_CALLBACK (proxy_edit_ok), account);
            g_signal_connect ((GtkWidget *)proxyCancel, "clicked", G_CALLBACK (proxy_cancel), account);
            proxy_load_edit_dialog (account, edited);
            gtk_widget_hide (contacts);
            gtk_widget_show (GTK_WIDGET (priv->main));
        }
        }
}