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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Authors :
 *  
 *  Sivaiah Nallagatla <snallagatla@novell.com>
 *
 * Copyright 2003, Novell, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

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

#include "camel-gw-listener.h"
#include <string.h>
#include  <camel/camel-i18n.h>
#include <e-gw-connection.h>
#include <libedataserverui/e-passwords.h>
#include "e-util/e-error.h"
#include <e-util/e-account.h>

/*stores some info about all currently existing groupwise accounts 
  list of GwAccountInfo structures */

static  GList *groupwise_accounts = NULL;

struct _CamelGwListenerPrivate {
    GConfClient *gconf_client;
    /* we get notification about mail account changes form this object */
    EAccountList *account_list;                  
};

struct _GwAccountInfo {
    char *uid;
    char *name;
    char *source_url;
};

typedef struct _GwAccountInfo GwAccountInfo;

#define GROUPWISE_URI_PREFIX   "groupwise://" 
#define GROUPWISE_PREFIX_LENGTH 12

#define PARENT_TYPE G_TYPE_OBJECT

static GObjectClass *parent_class = NULL;

static void dispose (GObject *object);
static void finalize (GObject *object);


static void 
camel_gw_listener_class_init (CamelGwListenerClass *class)
{
    GObjectClass *object_class;
    
    parent_class =  g_type_class_ref (PARENT_TYPE);
    object_class = G_OBJECT_CLASS (class);
    
    /* virtual method override */
    object_class->dispose = dispose;
    object_class->finalize = finalize;
}

static void 
camel_gw_listener_init (CamelGwListener *config_listener,  CamelGwListenerClass *class)
{
    config_listener->priv = g_new0 (CamelGwListenerPrivate, 1); 
}

static void 
dispose (GObject *object)
{
    CamelGwListener *config_listener = CAMEL_GW_LISTENER (object);
    
    g_object_unref (config_listener->priv->gconf_client);
    g_object_unref (config_listener->priv->account_list);

    G_OBJECT_CLASS (parent_class)->dispose (object);
}

static void 
finalize (GObject *object)
{
    CamelGwListener *config_listener = CAMEL_GW_LISTENER (object);
    GList *list;
    GwAccountInfo *info;

    if (config_listener->priv) {
        g_free (config_listener->priv);
    }

    for ( list = g_list_first (groupwise_accounts); list ; list = g_list_next (list) ) {
           
        info = (GwAccountInfo *) (list->data);

        if (info) {
            
            g_free (info->uid);
            g_free (info->name);
            g_free (info->source_url);
            g_free (info);
        }
    }
    
    g_list_free (groupwise_accounts);
}

/*determines whehter the passed in account is groupwise or not by looking at source url */

static gboolean
is_groupwise_account (EAccount *account)
{
    if (account->source->url != NULL) {
        return (strncmp (account->source->url,  GROUPWISE_URI_PREFIX, GROUPWISE_PREFIX_LENGTH ) == 0);
    } else {
        return FALSE;
    }
}

/* looks up for an existing groupwise account info in the groupwise_accounts list based on uid */

static GwAccountInfo* 
lookup_account_info (const char *key)
{
    GList *list;
        GwAccountInfo *info ;
    int found = 0;
                                                                      
        if (!key)
                return NULL;

    info = NULL;

        for (list = g_list_first (groupwise_accounts);  list;  list = g_list_next (list)) {
                info = (GwAccountInfo *) (list->data);
                found = (strcmp (info->uid, key) == 0);
        if (found)
            break;
    }
    if (found)
        return info;
    return NULL;
}

#define CALENDAR_SOURCES "/apps/evolution/calendar/sources"
#define TASKS_SOURCES "/apps/evolution/tasks/sources"
#define SELECTED_CALENDARS "/apps/evolution/calendar/display/selected_calendars"
#define SELECTED_TASKS   "/apps/evolution/calendar/tasks/selected_tasks"

static void
add_esource (const char *conf_key, const char *group_name,  const char *source_name, CamelURL *url)
{
    ESourceList *source_list;
    ESourceGroup *group;
    ESource *source;
        GConfClient* client;
    GSList *ids, *temp ;
    char *source_selection_key;
    char *relative_uri;
    const char *soap_port;
    const char * use_ssl;
    const char *poa_address;
    const char *offline_sync;
    
    
    poa_address = url->host;
    if (!poa_address || strlen (poa_address) ==0)
        return;
    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");


    offline_sync = camel_url_get_param (url, "offline_sync");
    
    client = gconf_client_get_default();    
    source_list = e_source_list_new_for_gconf (client, conf_key);

    group = e_source_group_new (group_name,  GROUPWISE_URI_PREFIX);
    if (!e_source_list_add_group (source_list, group, -1))
        return;
    relative_uri = g_strdup_printf ("%s@%s/", url->user, poa_address);
    
    source = e_source_new (source_name, relative_uri);
    e_source_set_property (source, "auth", "1");
    e_source_set_property (source, "username", url->user);
    e_source_set_property (source, "port", camel_url_get_param (url, "soap_port"));
    e_source_set_property (source, "auth-domain", "Groupwise");
    e_source_set_property (source, "use_ssl", use_ssl);
    e_source_set_property (source, "offline_sync", offline_sync ? "1" : "0" );
    e_source_group_add_source (group, source, -1);
    e_source_list_sync (source_list, NULL);

    if (!strcmp (conf_key, CALENDAR_SOURCES)) 
        source_selection_key = SELECTED_CALENDARS;
    else if (!strcmp (conf_key, TASKS_SOURCES))
        source_selection_key = SELECTED_TASKS;
    else source_selection_key = NULL;
    if (source_selection_key) {
        ids = gconf_client_get_list (client, source_selection_key , GCONF_VALUE_STRING, NULL);
        ids = g_slist_append (ids, g_strdup (e_source_peek_uid (source)));
        gconf_client_set_list (client,  source_selection_key, GCONF_VALUE_STRING, ids, NULL);
        temp  = ids;
        for (; temp != NULL; temp = g_slist_next (temp))
            g_free (temp->data);
        g_slist_free (ids);
    }
    
    g_object_unref (source);
    g_object_unref (group);
    g_object_unref (source_list);
    g_object_unref (client);
    g_free (relative_uri);
}


static void 
remove_esource (const char *conf_key, const char *group_name, char* source_name, const char* relative_uri)
{
    ESourceList *list;
        ESourceGroup *group;
        ESource *source;
        GSList *groups;
        GSList *sources;
    gboolean found_group;
    GConfClient* client;
    GSList *ids;
    GSList *node_tobe_deleted;
    char *source_selection_key;
                                                                                                                             
        client = gconf_client_get_default();
        list = e_source_list_new_for_gconf (client, conf_key);
    groups = e_source_list_peek_groups (list); 
    
    found_group = FALSE;
    
    for ( ; groups != NULL && !found_group; groups = g_slist_next (groups)) {

        group = E_SOURCE_GROUP (groups->data);
        
        if (strcmp (e_source_group_peek_name (group), group_name) == 0 && 
           strcmp (e_source_group_peek_base_uri (group), GROUPWISE_URI_PREFIX ) == 0) {

            sources = e_source_group_peek_sources (group);
            
            for( ; sources != NULL; sources = g_slist_next (sources)) {
                
                source = E_SOURCE (sources->data);
                
                if (strcmp (e_source_peek_relative_uri (source), relative_uri) == 0) {
                
                    if (!strcmp (conf_key, CALENDAR_SOURCES)) 
                        source_selection_key = SELECTED_CALENDARS;
                    else if (!strcmp (conf_key, TASKS_SOURCES))
                        source_selection_key = SELECTED_TASKS;
                    else source_selection_key = NULL;
                    if (source_selection_key) {
                        ids = gconf_client_get_list (client, source_selection_key , 
                                         GCONF_VALUE_STRING, NULL);
                        node_tobe_deleted = g_slist_find_custom (ids, e_source_peek_uid (source), (GCompareFunc) strcmp);
                        if (node_tobe_deleted) {
                            g_free (node_tobe_deleted->data);
                            ids = g_slist_delete_link (ids, node_tobe_deleted);
                        }
                        gconf_client_set_list (client,  source_selection_key, 
                                       GCONF_VALUE_STRING, ids, NULL);

                    }
                    e_source_list_remove_group (list, group);
                    e_source_list_sync (list, NULL);    
                    found_group = TRUE;
                    break;
                    
                }
            }

        }
        
          
    }

    g_object_unref (list);
    g_object_unref (client);        
    
}

/* looks up for e-source with having same info as old_account_info and changes its values passed in new values */

static void 
modify_esource (const char* conf_key, GwAccountInfo *old_account_info, const char* new_group_name, CamelURL *new_url)
{
    ESourceList *list;
        ESourceGroup *group;
        ESource *source;
        GSList *groups;
    GSList *sources;
    char *old_relative_uri;
    CamelURL *url;
    gboolean found_group;
        GConfClient* client;
    const char *poa_address;
    char *new_relative_uri;
    const char *new_poa_address;
    
    url = camel_url_new (old_account_info->source_url, NULL);
    poa_address = url->host; 
    if (!poa_address || strlen (poa_address) ==0)
        return;
    new_poa_address = new_url->host;
    
    old_relative_uri =  g_strdup_printf ("%s@%s/", url->user, poa_address);
    client = gconf_client_get_default ();
        list = e_source_list_new_for_gconf (client, conf_key);
    groups = e_source_list_peek_groups (list); 

    found_group = FALSE;

    for ( ; groups != NULL &&  !found_group; groups = g_slist_next (groups)) {

        group = E_SOURCE_GROUP (groups->data);
        
        if (strcmp (e_source_group_peek_name (group), old_account_info->name) == 0 && 
            strcmp (e_source_group_peek_base_uri (group), GROUPWISE_URI_PREFIX) == 0) {

            sources = e_source_group_peek_sources (group);
            
            for ( ; sources != NULL; sources = g_slist_next (sources)) {
                
                source = E_SOURCE (sources->data);
                
                if (strcmp (e_source_peek_relative_uri (source), old_relative_uri) == 0) {
                    
                    new_relative_uri = g_strdup_printf ("%s@%s/", new_url->user, new_poa_address); 
                    e_source_group_set_name (group, new_group_name);
                    e_source_set_relative_uri (source, new_relative_uri);
                    e_source_set_property (source, "username", new_url->user);
                    e_source_set_property (source, "port", camel_url_get_param (new_url,"soap_port"));
                    e_source_set_property (source, "use_ssl",  camel_url_get_param (url, "use_ssl"));
                    e_source_set_property (source, "offline_sync",  camel_url_get_param (url, "offline_sync") ? "1" : "0");
                    e_source_list_sync (list, NULL);
                    found_group = TRUE;
                    g_free (new_relative_uri);
                    break;
                }
            }
        }
    }

    g_object_unref (list);
    g_object_unref (client);
    camel_url_free (url);
    g_free (old_relative_uri);

    
}
/* add sources for calendar and tasks if the account added is groupwise account
   adds the new account info to  groupwise_accounts list */

static void 
add_calendar_tasks_sources (GwAccountInfo *info)
{
    CamelURL *url;
    
    url = camel_url_new (info->source_url, NULL);
    add_esource ("/apps/evolution/calendar/sources", info->name, _("Calendar"), url);
    add_esource ("/apps/evolution/tasks/sources", info->name, _("Tasks"), url);
    
    camel_url_free (url);


}

/* removes calendar and tasks sources if the account removed is groupwise account 
   removes the the account info from groupwise_account list */

static void 
remove_calendar_tasks_sources (GwAccountInfo *info)
{
    CamelURL *url;
    char *relative_uri;
        const char *soap_port;
    const char *poa_address;

    url = camel_url_new (info->source_url, NULL);

    poa_address = url->host; 
    if (!poa_address || strlen (poa_address) ==0)
        return;

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

    relative_uri =  g_strdup_printf ("%s@%s/", url->user, poa_address);
    remove_esource ("/apps/evolution/calendar/sources", info->name, _("Calendar"), relative_uri);
    remove_esource ("/apps/evolution/tasks/sources", info->name,  _("Checklist"), relative_uri);
    camel_url_free (url);
    g_free (relative_uri);

}

static GList*
get_addressbook_names_from_server (char *source_url)
{
    char *key;
        EGwConnection *cnc; 
    char *password;
    GList *book_list;
    int status;
    const char *soap_port;
    CamelURL *url;
    gboolean remember;
    char *failed_auth = NULL; 
    char *prompt;
    char *password_prompt;
    char *uri;
    const char *use_ssl;
    const char *poa_address;
    guint32 flags = E_PASSWORDS_REMEMBER_FOREVER|E_PASSWORDS_SECRET;

    url = camel_url_new (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");
    if (!use_ssl)
        use_ssl = "";

    key =  g_strdup_printf ("groupwise://%s@%s/", url->user, poa_address); 
    
    if (!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);
    
    cnc = NULL;
    do {
        /*we have to uncache the password before prompting again*/
        if (failed_auth) {
            e_passwords_forget_password ("Groupwise", key);
            password = NULL;
        }

        password = e_passwords_get_password ("Groupwise", key);
        if (!password) {
            password_prompt = g_strdup_printf (_("Enter password for %s (user %s)"),
                    poa_address, url->user);
            prompt = g_strconcat (failed_auth ? failed_auth : "", password_prompt, NULL);
            g_free (password_prompt);
            password = e_passwords_ask_password (prompt, "Groupwise", key, prompt,
                    flags, &remember,
                    NULL);
            g_free (prompt);

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

        g_free (password);

        failed_auth = _("Failed to authenticate.\n");
        flags |= E_PASSWORDS_REPROMPT;
    } while (cnc == NULL);
    
    if (E_IS_GW_CONNECTION(cnc))  {
        book_list = NULL;   
        status = e_gw_connection_get_address_book_list (cnc, &book_list);
        if (status == E_GW_CONNECTION_STATUS_OK)
            return book_list;
        
               
    }
    /*FIXME: This error message should be relocated to addressbook and should reflect 
     * that it actually failed to get the addressbooks*/
    e_error_run (NULL, "mail:gw-accountsetup-error", poa_address, NULL);
    return NULL;
}
         
static void
add_proxy_esource (const char *conf_key, const char *group_name,  const char *source_name, CamelURL *url, const char* parent_id_name)
{
    ESourceList *source_list;
    ESourceGroup *group;
    ESource *source;
        GConfClient* client;
    GSList *ids, *temp ;
    char *source_selection_key;
    char *relative_uri;
    const char *soap_port;
    const char * use_ssl;
    const char *poa_address;
    const char *offline_sync;
    
    poa_address = url->host;
    if (!poa_address || strlen (poa_address) ==0)
        return;

    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");


    offline_sync = camel_url_get_param (url, "offline_sync");
    
    client = gconf_client_get_default();    
    source_list = e_source_list_new_for_gconf (client, conf_key);
    group = e_source_group_new (group_name,  GROUPWISE_URI_PREFIX);

    if (!e_source_list_add_group (source_list, group, -1))
        return;

    relative_uri = g_strdup_printf ("%s@%s/", url->user, poa_address);
    source = e_source_new (source_name, relative_uri);
    e_source_set_property (source, "auth", "1");
    e_source_set_property (source, "username", url->user);
    e_source_set_property (source, "port", camel_url_get_param (url, "soap_port"));
    e_source_set_property (source, "auth-domain", "Groupwise");
    e_source_set_property (source, "use_ssl", use_ssl);
    e_source_set_property (source, "offline_sync", offline_sync ? "1" : "0" );
    e_source_set_property (source, "parent_id_name", parent_id_name);
    e_source_group_add_source (group, source, -1);
    e_source_list_sync (source_list, NULL);

    if (!strcmp (conf_key, CALENDAR_SOURCES)) 
        source_selection_key = SELECTED_CALENDARS;
    else if (!strcmp (conf_key, TASKS_SOURCES))
        source_selection_key = SELECTED_TASKS;
    else 
        source_selection_key = NULL;

    if (source_selection_key) {
        ids = gconf_client_get_list (client, source_selection_key , GCONF_VALUE_STRING, NULL);
        ids = g_slist_append (ids, g_strdup (e_source_peek_uid (source)));
        gconf_client_set_list (client,  source_selection_key, GCONF_VALUE_STRING, ids, NULL);
        temp  = ids;

        for (; temp != NULL; temp = g_slist_next (temp))
            g_free (temp->data);

        g_slist_free (ids);
    }
    
    g_object_unref (source);
    g_object_unref (group);
    g_object_unref (source_list);
    g_object_unref (client);
    g_free (relative_uri);
}
                                                                                
static void 
add_proxy_sources (GwAccountInfo *info, const char *parent_name)
{
    CamelURL *url;
    
    url = camel_url_new (info->source_url, NULL);
    add_proxy_esource ("/apps/evolution/calendar/sources", info->name, _("Calendar"), url, parent_name);
    add_proxy_esource ("/apps/evolution/tasks/sources", info->name, _("Tasks"), url, parent_name);
    
    camel_url_free (url);
}

static gboolean
add_addressbook_sources (EAccount *account)
{
    CamelURL *url;
    ESourceList *list;
        ESourceGroup *group;
        ESource *source;
        char *base_uri;
    const char *soap_port;
    GList *books_list, *temp_list;
    GConfClient* client;
    const char* use_ssl;
    const char *poa_address;
    gboolean is_frequent_contacts = FALSE, is_writable = FALSE;

        url = camel_url_new (account->source->url, NULL);
    if (url == NULL) {
        return FALSE;
    }

    poa_address = url->host; 
    if (!poa_address || strlen (poa_address) ==0)
        return FALSE;

    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");
    base_uri =  g_strdup_printf ("groupwise://%s@%s", url->user, poa_address);
    client = gconf_client_get_default ();
    list = e_source_list_new_for_gconf (client, "/apps/evolution/addressbook/sources" );
    group = e_source_group_new (account->name, base_uri);
    books_list = get_addressbook_names_from_server (account->source->url);
    temp_list = books_list;
    if (!temp_list)
        return FALSE;
    for (; temp_list != NULL; temp_list = g_list_next (temp_list)) {
        const char *book_name =  e_gw_container_get_name (E_GW_CONTAINER(temp_list->data));
        /* is_writable is set to TRUE if the book has isPersonal property,
         * by e_gw_connection_get_address_book_list()
         */
        is_writable = e_gw_container_get_is_writable (E_GW_CONTAINER(temp_list->data));
        if (is_writable && 
            !g_ascii_strncasecmp (book_name, "Novell GroupWise Address Book", strlen (book_name))) {
            /* This is a hack to not to show multiple groupwise system address books 
             * if they are the personal address books with the name of system address book
             * See http://bugzilla.gnome.org/show_bug.cgi?id=320119
             * and http://bugzilla.gnome.org/show_bug.cgi?id=309511
             */
            continue;
        } 
 
        if (!is_frequent_contacts)
            is_frequent_contacts = e_gw_container_get_is_frequent_contacts (E_GW_CONTAINER (temp_list->data));
        source = e_source_new (book_name, g_strconcat (";",book_name, NULL));
        e_source_set_property (source, "auth", "plain/password");
        e_source_set_property (source, "auth-domain", "Groupwise");
        e_source_set_property (source, "port", soap_port);
        e_source_set_property(source, "user", url->user);
        /* mark system address book for offline usage */
        /* FIXME: add isPersonal flag to container and use that isFrequentContact
         * properties, instead of using writable to distinguish between the
         * system address book and other address books.
         */
        if (!is_writable)
            e_source_set_property (source, "offline_sync", "1");
        else
            e_source_set_property (source, "offline_sync", 
                           camel_url_get_param (url, "offline_sync") ? "1" : "0");
        if (!is_writable)
            e_source_set_property (source, "completion", "true");
        if (is_frequent_contacts)
            e_source_set_property (source, "completion", "true");
        e_source_set_property (source, "use_ssl", use_ssl);
        e_source_group_add_source (group, source, -1);
        g_object_unref (source);
    }
    e_source_list_add_group (list, group, -1);
        e_source_list_sync (list, NULL);    
    g_object_unref (group);
    g_object_unref (list);
    g_object_unref (client);
    g_free (base_uri);

    if (!is_frequent_contacts) {
        /* display warning message */
        e_error_run (NULL, "addressbook:gw-book-list-init", NULL);
    }   
    return TRUE;
}

static void 
modify_addressbook_sources ( EAccount *account, GwAccountInfo *existing_account_info )
{
    CamelURL *url;
    ESourceList *list;
        ESourceGroup *group;
    GSList *groups;
        gboolean found_group;
    gboolean delete_group;
    char *old_base_uri;
    char *new_base_uri;
    const char *soap_port;
    const char *use_ssl;
    GSList *sources;
    ESource *source;
    GConfClient *client;
    const char *poa_address;
    

    url = camel_url_new (existing_account_info->source_url, NULL);
    if (url == NULL) {
        return;
    }

    poa_address = url->host; 
    if (!poa_address || strlen (poa_address) ==0)
        return;

    old_base_uri =  g_strdup_printf ("groupwise://%s@%s", url->user, poa_address);
    camel_url_free (url);
    
    url = camel_url_new (account->source->url, NULL);
    if (url == NULL)
        return ;
    poa_address = url->host;
    if (!poa_address || strlen (poa_address) ==0)
        return;
    new_base_uri = g_strdup_printf ("groupwise://%s@%s", url->user, poa_address);
    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");

    client = gconf_client_get_default ();
    list = e_source_list_new_for_gconf (client, "/apps/evolution/addressbook/sources" );
    groups = e_source_list_peek_groups (list); 
    delete_group = FALSE;
    if (strcmp (old_base_uri, new_base_uri) != 0)
        delete_group = TRUE;
    group = NULL;
    found_group = FALSE;
    for ( ; groups != NULL &&  !found_group; groups = g_slist_next (groups)) {

        group = E_SOURCE_GROUP (groups->data);
        if ( strcmp ( e_source_group_peek_base_uri(group), old_base_uri) == 0 && strcmp (e_source_group_peek_name (group), existing_account_info->name) == 0) {
            found_group = TRUE;
            if (!delete_group) {
                e_source_group_set_name (group, account->name);
                sources = e_source_group_peek_sources (group);
                for (; sources != NULL; sources = g_slist_next (sources)) {
                    source = E_SOURCE (sources->data);
                    e_source_set_property (source, "port", soap_port);
                    e_source_set_property (source, "use_ssl", use_ssl);
                }
                    
                e_source_list_sync (list, NULL);
            }
        
        }
    }
    if (found_group && delete_group) {
        e_source_list_remove_group (list, group);
        e_source_list_sync (list, NULL);
        g_object_unref (list);
        list = NULL;
        add_addressbook_sources (account);
    }
    g_free (old_base_uri);
    if (list)
        g_object_unref (list);
    camel_url_free (url);
    g_object_unref (client);


}

static void 
remove_addressbook_sources (GwAccountInfo *existing_account_info)
{
    ESourceList *list;
        ESourceGroup *group;
    GSList *groups;
        gboolean found_group;
    CamelURL *url;
    char *base_uri;
    const char *soap_port;
    GConfClient *client;
    const char *poa_address;

    url = camel_url_new (existing_account_info->source_url, NULL);
    if (url == NULL) {
        return;
    }

    poa_address = url->host; 
    if (!poa_address || strlen (poa_address) ==0)
        return;

    soap_port = camel_url_get_param (url, "soap_port");
    if (!soap_port || strlen (soap_port) == 0)
        soap_port = "7191";
    base_uri =  g_strdup_printf ("groupwise://%s@%s", url->user,  poa_address);
    client = gconf_client_get_default ();
    list = e_source_list_new_for_gconf (client, "/apps/evolution/addressbook/sources" );
    groups = e_source_list_peek_groups (list); 

    found_group = FALSE;

    for ( ; groups != NULL &&  !found_group; groups = g_slist_next (groups)) {

        group = E_SOURCE_GROUP (groups->data);
        if ( strcmp ( e_source_group_peek_base_uri (group), base_uri) == 0 && strcmp (e_source_group_peek_name (group), existing_account_info->name) == 0) {

            e_source_list_remove_group (list, group);
            e_source_list_sync (list, NULL);
            found_group = TRUE;
                        
        }
    }
    g_object_unref (list);
    g_object_unref (client);
    g_free (base_uri);
    camel_url_free (url);
    

}

static void 
account_added (EAccountList *account_listener, EAccount *account)
{

    GwAccountInfo *info;
    EAccount *parent;
    gboolean status;
    CamelURL *parent_url;

    if (!is_groupwise_account (account))
        return;
    
    info = g_new0 (GwAccountInfo, 1);
    info->uid = g_strdup (account->uid);
    info->name = g_strdup (account->name);
    info->source_url = g_strdup (account->source->url);
    if (account->parent_uid) {
        parent = (EAccount *)e_account_list_find (account_listener, E_ACCOUNT_FIND_UID, account->parent_uid);

        if (!parent) 
            return;

        parent_url = camel_url_new (e_account_get_string(parent, E_ACCOUNT_SOURCE_URL), NULL);  
        add_proxy_sources (info, parent_url->user);
    } else {
        status = add_addressbook_sources (account);
        
        if (status) 
            add_calendar_tasks_sources (info);
    }
    groupwise_accounts = g_list_append (groupwise_accounts, info);
}

static void 
account_removed (EAccountList *account_listener, EAccount *account)
{
        GwAccountInfo *info;
    
    if (!is_groupwise_account (account))
        return;
    
    info = lookup_account_info (account->uid);
    if (info == NULL) 
        return;

    remove_calendar_tasks_sources (info);
    remove_addressbook_sources (info);
    groupwise_accounts = g_list_remove (groupwise_accounts, info);
    g_free (info->uid);
    g_free (info->name);
    g_free (info->source_url);
        g_free (info);
}


static void
account_changed (EAccountList *account_listener, EAccount *account)
{
    gboolean is_gw_account;
    CamelURL *old_url, *new_url;
    const char *old_soap_port, *new_soap_port;
    GwAccountInfo *existing_account_info;
    const char *old_use_ssl, *new_use_ssl;
    const char *old_poa_address, *new_poa_address;
    
    is_gw_account = is_groupwise_account (account);
    
    existing_account_info = lookup_account_info (account->uid);
       
    if (existing_account_info == NULL && is_gw_account) {

        if (!account->enabled)
            return;

        /* some account of other type is changed to Groupwise */
        account_added (account_listener, account);

    } else if ( existing_account_info != NULL && !is_gw_account) {

        /*Groupwise account is changed to some other type */
        remove_calendar_tasks_sources (existing_account_info);
        remove_addressbook_sources (existing_account_info);
        groupwise_accounts = g_list_remove (groupwise_accounts, existing_account_info);
        g_free (existing_account_info->uid);
        g_free (existing_account_info->name);
        g_free (existing_account_info->source_url);
        g_free (existing_account_info);
        
    } else if ( existing_account_info != NULL && is_gw_account ) {
        
        if (!account->enabled) {
            account_removed (account_listener, account);
            return;
        }
        
        /* some info of groupwise account is changed . update the sources with new info if required */
        old_url = camel_url_new (existing_account_info->source_url, NULL);
        old_poa_address = old_url->host; 
        old_soap_port = camel_url_get_param (old_url, "soap_port");
        old_use_ssl = camel_url_get_param (old_url, "use_ssl");
        new_url = camel_url_new (account->source->url, NULL);
        new_poa_address = new_url->host; 

        if (!new_poa_address || strlen (new_poa_address) ==0)
            return;

        new_soap_port = camel_url_get_param (new_url, "soap_port");

        if (!new_soap_port || strlen (new_soap_port) == 0)
            new_soap_port = "7191";

        new_use_ssl = camel_url_get_param (new_url, "use_ssl");

        if ((old_poa_address && strcmp (old_poa_address, new_poa_address))
           ||  (old_soap_port && strcmp (old_soap_port, new_soap_port)) 
           ||  strcmp (old_url->user, new_url->user) 
           || strcmp (old_use_ssl, new_use_ssl)) {
            
            account_removed (account_listener, account);
            account_added (account_listener, account);
        } else if (strcmp (existing_account_info->name, account->name)) {
            
            modify_esource ("/apps/evolution/calendar/sources", existing_account_info, account->name, new_url);
            modify_esource ("/apps/evolution/tasks/sources", existing_account_info, account->name,  new_url);
            modify_addressbook_sources (account, existing_account_info);
            
        }
        
        g_free (existing_account_info->name);
        g_free (existing_account_info->source_url);
        existing_account_info->name = g_strdup (account->name);
        existing_account_info->source_url = g_strdup (account->source->url);
        camel_url_free (old_url);
        camel_url_free (new_url);
    }   
} 

static void
camel_gw_listener_construct (CamelGwListener *config_listener)
{
    EIterator *iter;
    EAccount *account;
    GwAccountInfo *info ;
    
        config_listener->priv->account_list = e_account_list_new (config_listener->priv->gconf_client);

    for ( iter = e_list_get_iterator (E_LIST ( config_listener->priv->account_list) ) ; e_iterator_is_valid (iter); e_iterator_next (iter) ) {
        
        account = E_ACCOUNT (e_iterator_get (iter));

        if ( is_groupwise_account (account) && account->enabled) {
            
                info = g_new0 (GwAccountInfo, 1);
            info->uid = g_strdup (account->uid);
            info->name = g_strdup (account->name);
            info->source_url = g_strdup (account->source->url);
            groupwise_accounts = g_list_append (groupwise_accounts, info);
            
        }
            
    }
    g_signal_connect (config_listener->priv->account_list, "account_added", G_CALLBACK (account_added), NULL);
    g_signal_connect (config_listener->priv->account_list, "account_changed", G_CALLBACK (account_changed), NULL);
    g_signal_connect (config_listener->priv->account_list, "account_removed", G_CALLBACK (account_removed), NULL);    
}

GType
camel_gw_listener_get_type (void)
{
    static GType camel_gw_listener_type  = 0;

    if (!camel_gw_listener_type) {
        static GTypeInfo info = {
                        sizeof (CamelGwListenerClass),
                        (GBaseInitFunc) NULL,
                        (GBaseFinalizeFunc) NULL,
                        (GClassInitFunc) camel_gw_listener_class_init,
                        NULL, NULL,
                        sizeof (CamelGwListener),
                        0,
                        (GInstanceInitFunc) camel_gw_listener_init
                };
        camel_gw_listener_type = g_type_register_static (PARENT_TYPE, "CamelGwListener", &info, 0);
    }

    return camel_gw_listener_type;
}

CamelGwListener*
camel_gw_listener_new ()
{
    CamelGwListener *config_listener;
       
    config_listener = g_object_new (CAMEL_TYPE_GW_LISTENER, NULL);
    config_listener->priv->gconf_client = gconf_client_get_default();
    
    camel_gw_listener_construct (config_listener);

    return config_listener;
}