path: root/plugins/google-account-setup/google-source.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:
 *      Ebby Wiselyn <ebbywiselyn@gmail.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>

#include <glib/gi18n-lib.h>
#include <glib.h>

#include <gtk/gtk.h>

#include <e-util/e-config.h>
#include <e-util/e-plugin.h>

#include <calendar/gui/e-cal-config.h>

#include <libedataserver/e-url.h>
#include <libedataserver/e-account-list.h>
#include <libecal/e-cal.h>
#include <libedataserverui/e-cell-renderer-color.h>
#include <libedataserverui/e-passwords.h>

#include <google/libgdata/gdata-service-iface.h>
#include <google/libgdata/gdata-feed.h>
#include <google/libgdata-google/gdata-google-service.h>

#include "google-contacts-source.h"

#define CALENDAR_LOCATION "http://www.google.com/calendar/feeds/"
#define CALENDAR_DEFAULT_PATH "/private/full"
#define URL_GET_SUBSCRIBED_CALENDARS "http://www.google.com/calendar/feeds/default/allcalendars/full"

#define d(x)

/*****************************************************************************/
/* prototypes */
int              e_plugin_lib_enable      (EPluginLib                 *ep,
                       int                         enable);

GtkWidget *      plugin_google               (EPlugin                    *epl,
                       EConfigHookItemFactoryData *data);

/*****************************************************************************/
/* plugin intialization */



static void
ensure_google_source_group (void)
{
    ESourceList  *slist;

    if (!e_cal_get_sources (&slist, E_CAL_SOURCE_TYPE_EVENT, NULL)) {
        g_warning ("Could not get calendar source list from GConf!");
        return;
    }

    e_source_list_ensure_group (slist, _("Google"), "google://", FALSE);
    g_object_unref (slist);
}

int
e_plugin_lib_enable (EPluginLib *ep, int enable)
{

    if (enable) {
        d(printf ("\n Google Eplugin starting up ...\n"));
        ensure_google_source_group ();
        ensure_google_contacts_source_group ();
    } else {
        remove_google_contacts_source_group ();
    }

    return 0;
}


/********************************************************************************************************************/
#if 0

FIXME: Not sure why this function is declared but called no where. This needs fixing.

static void
ssl_changed (GtkToggleButton *button, ESource *source)
{
    e_source_set_property(source, "ssl",
                  gtk_toggle_button_get_active(button) ? "1" : "0");
}

#endif


static gboolean
is_email (const char *address)
{
    /* This is supposed to check if the address's domain could be
           an FQDN but alas, it's not worth the pain and suffering. */
    const char *at;

    at = strchr (address, '@');
    /* make sure we have an '@' and that it's not the first or last char */
    if (!at || at == address || *(at + 1) == '\0')
        return FALSE;

    return TRUE;
}

static char *
sanitize_user_mail (const char *user)
{
    if (!user)
        return NULL;

    if (!is_email (user)) {
        return g_strconcat (user, "%40gmail.com", NULL);
    } else {
        char *tmp = g_malloc0 (sizeof (char) * (1 + strlen (user) + 2));
        char *at = strchr (user, '@');

        strncpy (tmp, user, at - user);
        strcat (tmp, "%40");
        strcat (tmp, at + 1);

        return tmp;
    }
}

static char *
construct_default_uri (const char *username)
{
    char *user, *uri;

    user = sanitize_user_mail (username);
    uri = g_strconcat (CALENDAR_LOCATION, user, CALENDAR_DEFAULT_PATH, NULL);
    g_free (user);

    return uri;
}

/* checks whether the given_uri is pointing to the default user's calendar or not */
static gboolean
is_default_uri (const char *given_uri, const char *username)
{
    char *uri, *at;
    int ats;
    gboolean res;

    if (!given_uri)
        return TRUE;

    uri = construct_default_uri (username);

    /* count number of '@' in given_uri to know how much memory will be required */
    ats = 0;
    for (at = strchr (given_uri, '@'); at; at = strchr (at + 1, '@')) {
        ats++;
    }

    if (!ats)
        res = g_ascii_strcasecmp (given_uri, uri) == 0;
    else {
        const char *last;
        char *tmp = g_malloc0 (sizeof (char) * (1 + strlen (given_uri) + (2 * ats)));

        last = given_uri;
        for (at = strchr (last, '@'); at; at = strchr (at + 1, '@')) {
            strncat (tmp, last, at - last);
            strcat (tmp, "%40");
            last = at + 1;
        }
        strcat (tmp, last);

        res = g_ascii_strcasecmp (tmp, uri) == 0;

        g_free (tmp);
    }

    g_free (uri);

    return res;
}

static void init_combo_values (GtkComboBox *combo, const char *deftitle, const char *defuri);

static void
user_changed (GtkEntry *editable, ESource *source)
{
    char       *uri;
    const char *user;

    /* two reasons why set readonly to FALSE:
       a) the e_source_set_relative_uri does nothing for readonly sources
       b) we are going to set default uri, which should be always writeable */
    e_source_set_readonly (source, FALSE);

    user = gtk_entry_get_text (GTK_ENTRY (editable));
    uri = construct_default_uri (user);
    e_source_set_relative_uri (source, uri);
    g_free (uri);

    e_source_set_property (source, "username", user);
    e_source_set_property (source, "protocol", "google");
    e_source_set_property (source, "auth-domain", "google");
    e_source_set_property (source, "auth", (user && *user) ? "1" : NULL);
    e_source_set_property (source, "googlename", NULL);

    /* we changed user, thus reset the chosen calendar combo too, because
       other user means other calendars subscribed */
    init_combo_values (GTK_COMBO_BOX (g_object_get_data (G_OBJECT (editable), "CalendarCombo")), _("Default"), NULL);
}

static char *
get_refresh_minutes (GtkWidget *spin, GtkWidget *combobox)
{
    int setting = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (spin));
    switch (gtk_combo_box_get_active (GTK_COMBO_BOX (combobox))) {
    case 0:
        /* minutes */
        break;
    case 1:
        /* hours */
        setting *= 60;
        break;
    case 2:
        /* days */
        setting *= 1440;
        break;
    case 3:
        /* weeks - is this *really* necessary? */
        setting *= 10080;
        break;
    default:
        g_warning ("Time unit out of range");
        break;
    }

    return g_strdup_printf ("%d", setting);
}

static void
spin_changed (GtkSpinButton *spin, ECalConfigTargetSource *t)
{
    gchar *refresh_str;
    GtkWidget *combobox;

    combobox = g_object_get_data (G_OBJECT(spin), "combobox");

    refresh_str = get_refresh_minutes ((GtkWidget *)spin, combobox);
    e_source_set_property (t->source, "refresh", refresh_str);
    g_free (refresh_str);
}

static void
combobox_changed (GtkComboBox *combobox, ECalConfigTargetSource *t)
{
    gchar *refresh_str;
    GtkWidget *spin;

    spin = g_object_get_data (G_OBJECT(combobox), "spin");

    refresh_str = get_refresh_minutes (spin, (GtkWidget *)combobox);
    e_source_set_property (t->source, "refresh", refresh_str);
    g_free (refresh_str);
}

static void
set_refresh_time (ESource *source, GtkWidget *spin, GtkWidget *combobox)
{
    int time;
    int item_num = 0;
    const char *refresh_str = e_source_get_property (source, "refresh");
    time = refresh_str ? atoi (refresh_str) : 30;

    if (time  && !(time % 10080)) {
        /* weeks */
        item_num = 3;
        time /= 10080;
    } else if (time && !(time % 1440)) {
        /* days */
        item_num = 2;
        time /= 1440;
    } else if (time && !(time % 60)) {
        /* hours */
        item_num = 1;
        time /= 60;
    }
    gtk_combo_box_set_active (GTK_COMBO_BOX (combobox), item_num);
    gtk_spin_button_set_value (GTK_SPIN_BUTTON (spin), time);
}

enum {
    COL_COLOR = 0, /* GDK_TYPE_COLOR */
    COL_TITLE,     /* G_TYPE_STRING */
    COL_URL_PATH,  /* G_TYPE_STRING */
    COL_READ_ONLY, /* G_TYPE_BOOLEAN */
    NUM_COLUMNS
};

static void
init_combo_values (GtkComboBox *combo, const char *deftitle, const char *defuri)
{
    GtkTreeIter iter;
    GtkListStore *store;

    if (!combo)
        return;

    store = GTK_LIST_STORE (gtk_combo_box_get_model (combo));

    gtk_list_store_clear (store);

    gtk_list_store_append (store, &iter);
    gtk_list_store_set (store, &iter,
        COL_COLOR, NULL,
        COL_TITLE, deftitle,
        COL_URL_PATH, defuri,
        COL_READ_ONLY, FALSE,
        -1);

    gtk_combo_box_set_active (GTK_COMBO_BOX (combo), 0);
}

static void
cal_combo_changed (GtkComboBox *combo, ESource *source)
{
    GtkListStore *store;
    GtkTreeIter iter;

    g_return_if_fail (combo != NULL);
    g_return_if_fail (source != NULL);

    store = GTK_LIST_STORE (gtk_combo_box_get_model (combo));

    if (gtk_combo_box_get_active_iter (combo, &iter)) {
        char *uri = NULL, *title = NULL;
        gboolean readonly = FALSE;

        gtk_tree_model_get (GTK_TREE_MODEL (store), &iter, COL_TITLE, &title, COL_URL_PATH, &uri, COL_READ_ONLY, &readonly, -1);

        if (!uri)
            uri = construct_default_uri (e_source_get_property (source, "username"));

        if (is_default_uri (uri, e_source_get_property (source, "username"))) {
            /* do not store title when we use default uri */
            g_free (title);
            title = NULL;
        }

        /* first set readonly to FALSE, otherwise if TRUE, then e_source_set_readonly does nothing */
        e_source_set_readonly (source, FALSE);
        e_source_set_relative_uri (source, uri);
        e_source_set_readonly (source, readonly);
        e_source_set_property (source, "googlename", title);
        e_source_set_property (source, "protocol", "google");
        e_source_set_property (source, "auth-domain", "google");

        g_free (title);
        g_free (uri);
    }
}

static void
claim_error (GtkWindow *parent, const char *error)
{
    GtkWidget *dialog;

    dialog = gtk_message_dialog_new (parent,
            GTK_DIALOG_DESTROY_WITH_PARENT,
            GTK_MESSAGE_ERROR,
            GTK_BUTTONS_CLOSE,
            "%s",
            error);
    gtk_dialog_run (GTK_DIALOG (dialog));
    gtk_widget_destroy (dialog);
}

static void
retrieve_list_clicked (GtkButton *button, GtkComboBox *combo)
{
    ESource *source;
    GDataGoogleService *service;
    GDataFeed *feed;
    char *password, *tmp;
    const char *username;
    GError *error = NULL;
    GtkWindow *parent;

    g_return_if_fail (button != NULL);
    g_return_if_fail (combo != NULL);

    parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (button)));

    source = g_object_get_data (G_OBJECT (button), "ESource");
    g_return_if_fail (source != NULL);

    username = e_source_get_property (source, "username");
    g_return_if_fail (username != NULL && *username != '\0');

    tmp = g_strdup_printf (_("Enter password for user %s to access list of subscribed calendars."), username);
    password = e_passwords_ask_password (_("Enter password"), "Calendar", "", tmp, 
            E_PASSWORDS_REMEMBER_NEVER | E_PASSWORDS_REPROMPT | E_PASSWORDS_SECRET | E_PASSWORDS_DISABLE_REMEMBER,
            NULL, parent);
    g_free (tmp);

    if (!password)
        return;

    service = gdata_google_service_new ("cl", "evolution-client-0.0.1");
    gdata_service_set_credentials (GDATA_SERVICE (service), username, password);
    /* privacy... maybe... */
    memset (password, 0, strlen (password));
    g_free (password);

    feed = gdata_service_get_feed (GDATA_SERVICE (service), URL_GET_SUBSCRIBED_CALENDARS, &error);

    if (feed) {
        GSList *l;
        char *old_selected = NULL;
        int idx, active = -1, default_idx = -1;
        GtkListStore *store = GTK_LIST_STORE (gtk_combo_box_get_model (combo));
        GtkTreeIter iter;

        if (gtk_combo_box_get_active_iter (combo, &iter))
            gtk_tree_model_get (GTK_TREE_MODEL (store), &iter, COL_URL_PATH, &old_selected, -1);

        gtk_list_store_clear (store);

        for (l = gdata_feed_get_entries (feed), idx = 1; l != NULL; l = l->next) {
            const char *uri, *title, *color, *access;
            GSList *links;
            GDataEntry *entry = (GDataEntry *) l->data;

            if (!entry || !GDATA_IS_ENTRY (entry))
                continue;

            /* skip hidden entries */
            if (gdata_entry_get_custom (entry, "hidden") && g_ascii_strcasecmp (gdata_entry_get_custom (entry, "hidden"), "true") == 0)
                continue;

            uri = NULL;
            for (links = gdata_entry_get_links (entry); links && !uri; links = links->next) {
                GDataEntryLink *link = (GDataEntryLink *)links->data;

                if (!link || !link->href || !link->rel)
                    continue;

                if (g_ascii_strcasecmp (link->rel, "alternate") == 0)
                    uri = link->href;
            }

            title = gdata_entry_get_title (entry);
            color = gdata_entry_get_custom (entry, "color");
            access = gdata_entry_get_custom (entry, "accesslevel");

            if (uri && title) {
                GdkColor gdkcolor;

                if (old_selected && g_str_equal (old_selected, uri))
                    active = idx;

                if (color)
                    gdk_color_parse (color, &gdkcolor);

                if (default_idx == -1 && is_default_uri (uri, username)) {
                    /* have the default uri always NULL and first in the combo */
                    uri = NULL;
                    gtk_list_store_insert (store, &iter, 0);
                    default_idx = idx;
                } else {
                    gtk_list_store_append (store, &iter);
                }

                gtk_list_store_set (store, &iter,
                    COL_COLOR, color ? &gdkcolor : NULL,
                    COL_TITLE, title,
                    COL_URL_PATH, uri,
                    COL_READ_ONLY, access && !g_str_equal (access, "owner") && !g_str_equal (access, "contributor"),
                    -1);
                idx++;
            }
        }

        if (default_idx == -1) {
            /* Hey, why we didn't find the default uri? Did something go so wrong or what? */
            gtk_list_store_insert (store, &iter, 0);
            gtk_list_store_set (store, &iter,
                COL_COLOR, NULL,
                COL_TITLE, _("Default"),
                COL_URL_PATH, NULL,
                COL_READ_ONLY, FALSE,
                -1);
        }

        gtk_combo_box_set_active (combo, active == -1 ? 0 : active);

        g_free (old_selected);
        g_object_unref (feed);
    } else {
        tmp = g_strdup_printf (_("Cannot read data from Google server.\n%s"), (error && error->message) ? error->message : _("Unknown error."));
        claim_error (parent, tmp);
        g_free (tmp);

        if (error) {
            g_error_free (error);
            error = NULL;
        }
    }

    g_object_unref (service);
}

static void
retrieve_list_sensitize (GtkEntry *username_entry,
                         GtkWidget *button)
{
    const gchar *text;
    gboolean sensitive;

    text = gtk_entry_get_text (username_entry);
    sensitive = (text != NULL && *text != '\0');
    gtk_widget_set_sensitive (button, sensitive);
}

GtkWidget *
plugin_google  (EPlugin                    *epl,
         EConfigHookItemFactoryData *data)
{
    ECalConfigTargetSource *t = (ECalConfigTargetSource *) data->target;
    ESource      *source;
    ESourceGroup *group;
    EUri         *euri;
    GtkWidget    *parent;
    GtkWidget    *cssl;
    GtkWidget    *widget;
    GtkWidget    *luser;
    GtkWidget    *user;
    GtkWidget    *label;
    GtkWidget    *combo;
    char         *uri;
    const char   *username;
    const char   *ssl_prop;
    gboolean      ssl_enabled;
    int           row;
    GtkCellRenderer *renderer;
    GtkListStore *store;

    GtkWidget *combobox, *spin, *hbox;

    source = t->source;
    group = e_source_peek_group (source);

    widget = NULL;
    if (g_ascii_strncasecmp ("google://", e_source_group_peek_base_uri (group), 9) != 0) {
        return NULL;
    }

    uri = e_source_get_uri (source);
    euri = e_uri_new (uri);
    g_free (uri);

    if (euri == NULL) {
        return NULL;
    }

    username = e_source_get_property (source, "username");
    g_free (euri->user);
    euri->user = NULL;
    uri = e_uri_to_string (euri, FALSE);

    ssl_prop = e_source_get_property (source, "ssl");
    if (ssl_prop && ssl_prop[0] == '1') {
        ssl_enabled = TRUE;
    } else {
        ssl_enabled = FALSE;
    }

    e_source_set_property (source, "ssl", "1");

    /* Build up the UI */
    parent = data->parent;
    row = GTK_TABLE (parent)->nrows;

    cssl = gtk_check_button_new_with_mnemonic (_("Use _SSL"));
    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cssl), ssl_enabled);
    gtk_widget_show (cssl);
    gtk_table_attach (GTK_TABLE (parent),
              cssl, 1, 2,
              row + 3, row + 4,
              GTK_FILL, 0, 0, 0);
    luser = gtk_label_new_with_mnemonic (_("User_name:"));
    gtk_widget_show (luser);
    gtk_misc_set_alignment (GTK_MISC (luser), 0.0, 0.5);
    gtk_table_attach (GTK_TABLE (parent),
              luser, 0, 1,
              row + 1, row + 2,
              GTK_FILL, 0, 0, 0);

    user = gtk_entry_new ();
    gtk_widget_show (user);
    gtk_entry_set_text (GTK_ENTRY (user), username ? username : "");
    gtk_table_attach (GTK_TABLE (parent), user,
              1, 2, row + 1, row + 2,
              GTK_EXPAND | GTK_FILL, 0, 0, 0);

    gtk_label_set_mnemonic_widget (GTK_LABEL (luser), user);

    label = gtk_label_new_with_mnemonic (_("Re_fresh:"));
    gtk_widget_show (label);
    gtk_misc_set_alignment (GTK_MISC(label), 0.0, 0.5);
    gtk_table_attach (GTK_TABLE (parent),
              label,
              0, 1,
              row + 2, row + 3,
             GTK_EXPAND | GTK_FILL, 0, 0, 0);


    hbox = gtk_hbox_new (FALSE, 6);
    gtk_widget_show (hbox);

    spin = gtk_spin_button_new_with_range (1, 100, 1);
    gtk_label_set_mnemonic_widget (GTK_LABEL(label), spin);
    gtk_widget_show (spin);
    gtk_box_pack_start (GTK_BOX(hbox), spin, FALSE, TRUE, 0);

    if (!e_source_get_property (source, "refresh"))
        e_source_set_property (source, "refresh", "30");

    combobox = gtk_combo_box_new_text ();
    gtk_widget_show (combobox);
    gtk_combo_box_append_text (GTK_COMBO_BOX (combobox), _("minutes"));
    gtk_combo_box_append_text (GTK_COMBO_BOX (combobox), _("hours"));
    gtk_combo_box_append_text (GTK_COMBO_BOX (combobox), _("days"));
    gtk_combo_box_append_text (GTK_COMBO_BOX (combobox), _("weeks"));
    set_refresh_time (source, spin, combobox);
    gtk_box_pack_start (GTK_BOX (hbox), combobox, FALSE, TRUE, 0);

    g_object_set_data (G_OBJECT (combobox), "spin", spin);
    g_signal_connect (G_OBJECT (combobox), "changed", G_CALLBACK (combobox_changed), t);
    g_object_set_data (G_OBJECT (spin), "combobox", combobox);
    g_signal_connect (G_OBJECT (spin), "value-changed", G_CALLBACK (spin_changed), t);

    gtk_table_attach (GTK_TABLE (parent), hbox, 1, 2, row + 2, row + 3, GTK_EXPAND | GTK_FILL, 0, 0, 0);

    g_signal_connect (G_OBJECT (user),
              "changed",
              G_CALLBACK (user_changed),
              source);

        g_free (uri);

    label = gtk_label_new_with_mnemonic (_("Cal_endar:"));
    gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
    gtk_widget_show (label);
    gtk_table_attach (GTK_TABLE (parent), label, 0, 1, row + 4, row + 5, GTK_FILL | GTK_EXPAND, 0, 0, 0);

    store = gtk_list_store_new (
        NUM_COLUMNS,
        GDK_TYPE_COLOR,     /* COL_COLOR */
        G_TYPE_STRING,      /* COL_TITLE */
        G_TYPE_STRING,      /* COL_URL_PATH */
        G_TYPE_BOOLEAN);    /* COL_READ_ONLY */

    combo = gtk_combo_box_new_with_model (GTK_TREE_MODEL (store));

    gtk_label_set_mnemonic_widget (GTK_LABEL (label), combo);

    renderer = e_cell_renderer_color_new ();
    gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), renderer, FALSE);
    gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), renderer, "color", COL_COLOR, NULL);

    renderer = gtk_cell_renderer_text_new ();
    gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), renderer, TRUE);
    gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), renderer, "text", COL_TITLE, NULL);

    init_combo_values (GTK_COMBO_BOX (combo),
        e_source_get_property (source, "googlename") ? e_source_get_property (source, "googlename") : _("Default"),
        e_source_get_property (source, "googlename") ? e_source_peek_relative_uri (source) : NULL);

    g_signal_connect (combo, "changed", G_CALLBACK (cal_combo_changed), source);

    g_object_set_data (G_OBJECT (user), "CalendarCombo", combo);

    hbox = gtk_hbox_new (FALSE, 6);

    gtk_box_pack_start (GTK_BOX (hbox), combo, TRUE, TRUE, 0);
    label = gtk_button_new_with_mnemonic (_("Retrieve _list"));
    g_signal_connect (label, "clicked", G_CALLBACK (retrieve_list_clicked), combo);
    g_signal_connect (user, "changed", G_CALLBACK (retrieve_list_sensitize), label);
    g_object_set_data (G_OBJECT (label), "ESource", source);
    gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
    gtk_widget_set_sensitive (label, FALSE);

    gtk_widget_show_all (hbox);
    gtk_table_attach (GTK_TABLE (parent), hbox, 1, 2, row + 4, row + 5, GTK_FILL | GTK_EXPAND, 0, 0, 0);

    return widget;
}