/* Evolution calendar - iCalendar http backend
*
* Copyright (C) 2003 Novell, Inc.
*
* Authors: Hans Petter Jansson <hpj@ximian.com>
*
* 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.
*
* Based in part on the file backend.
*/
#include <config.h>
#include <string.h>
#include <unistd.h>
#include <bonobo/bonobo-exception.h>
#include <bonobo/bonobo-moniker-util.h>
#include <libgnome/gnome-i18n.h>
#include <libgnomevfs/gnome-vfs.h>
#include "e-util/e-xml-hash-utils.h"
#include "cal-util/cal-recur.h"
#include "cal-util/cal-util.h"
#include "cal-backend-http.h"
#include "cal-backend-file.h"
#include "cal-backend-util.h"
#include "cal-backend-object-sexp.h"
/* Private part of the CalBackendHttp structure */
struct _CalBackendHttpPrivate {
/* URI to get remote calendar data from */
char *uri;
/* Local/remote mode */
CalMode mode;
/* Cached-file backend */
CalBackendFile file_backend;
/* The calendar's default timezone, used for resolving DATE and
floating DATE-TIME values. */
icaltimezone *default_zone;
/* The list of live queries */
GList *queries;
};
static void cal_backend_http_dispose (GObject *object);
static void cal_backend_http_finalize (GObject *object);
static CalBackendSyncClass *parent_class;
/* Dispose handler for the file backend */
static void
cal_backend_http_dispose (GObject *object)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
cbfile = CAL_BACKEND_HTTP (object);
priv = cbfile->priv;
if (G_OBJECT_CLASS (parent_class)->dispose)
(* G_OBJECT_CLASS (parent_class)->dispose) (object);
}
/* Finalize handler for the file backend */
static void
cal_backend_http_finalize (GObject *object)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
g_return_if_fail (object != NULL);
g_return_if_fail (IS_CAL_BACKEND_HTTP (object));
cbfile = CAL_BACKEND_HTTP (object);
priv = cbfile->priv;
/* Clean up */
if (priv->uri) {
g_free (priv->uri);
priv->uri = NULL;
}
g_free (priv);
cbfile->priv = NULL;
if (G_OBJECT_CLASS (parent_class)->finalize)
(* G_OBJECT_CLASS (parent_class)->finalize) (object);
}
/* Calendar backend methods */
/* Is_read_only handler for the file backend */
static CalBackendSyncStatus
cal_backend_http_is_read_only (CalBackendSync *backend, Cal *cal, gboolean *read_only)
{
CalBackendHttp *cbfile = backend;
*read_only = TRUE;
return GNOME_Evolution_Calendar_Success;
}
/* Get_email_address handler for the file backend */
static CalBackendSyncStatus
cal_backend_http_get_cal_address (CalBackendSync *backend, Cal *cal, char **address)
{
/* A file backend has no particular email address associated
* with it (although that would be a useful feature some day).
*/
*address = NULL;
return GNOME_Evolution_Calendar_Success;
}
static CalBackendSyncStatus
cal_backend_http_get_ldap_attribute (CalBackendSync *backend, Cal *cal, char **attribute)
{
*attribute = NULL;
return GNOME_Evolution_Calendar_Success;
}
static CalBackendSyncStatus
cal_backend_http_get_alarm_email_address (CalBackendSync *backend, Cal *cal, char **address)
{
/* A file backend has no particular email address associated
* with it (although that would be a useful feature some day).
*/
*address = NULL;
return GNOME_Evolution_Calendar_Success;
}
static CalBackendSyncStatus
cal_backend_http_get_static_capabilities (CalBackendSync *backend, Cal *cal, char **capabilities)
{
*capabilities = CAL_STATIC_CAPABILITY_NO_EMAIL_ALARMS;
return GNOME_Evolution_Calendar_Success;
}
/* Open handler for the file backend */
static CalBackendSyncStatus
cal_backend_http_open (CalBackendSync *backend, Cal *cal, gboolean only_if_exists)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
char *str_uri;
CalBackendSyncStatus status = GNOME_Evolution_Calendar_NoSuchCal;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
g_message ("Open URI '%s'.", cal_backend_get_uri (CAL_BACKEND (cbfile)));
return status;
}
static CalBackendSyncStatus
cal_backend_http_remove (CalBackendSync *backend, Cal *cal)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
char *str_uri;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
return GNOME_Evolution_Calendar_OtherError;
}
/* is_loaded handler for the file backend */
static gboolean
cal_backend_http_is_loaded (CalBackend *backend)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
return FALSE;
}
/* is_remote handler for the file backend */
static CalMode
cal_backend_http_get_mode (CalBackend *backend)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
return priv->mode;
}
#define cal_mode_to_corba(mode) \
(mode == CAL_MODE_LOCAL ? GNOME_Evolution_Calendar_MODE_LOCAL : \
mode == CAL_MODE_REMOTE ? GNOME_Evolution_Calendar_MODE_REMOTE : \
GNOME_Evolution_Calendar_MODE_ANY)
/* Set_mode handler for the file backend */
static void
cal_backend_http_set_mode (CalBackend *backend, CalMode mode)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
GNOME_Evolution_Calendar_CalMode set_mode;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
switch (mode) {
case CAL_MODE_LOCAL:
case CAL_MODE_REMOTE:
priv->mode = mode;
set_mode = cal_mode_to_corba (mode);
break;
case CAL_MODE_ANY:
priv->mode = CAL_MODE_REMOTE;
set_mode = GNOME_Evolution_Calendar_MODE_REMOTE;
break;
default:
set_mode = GNOME_Evolution_Calendar_MODE_ANY;
break;
}
if (set_mode == GNOME_Evolution_Calendar_MODE_ANY)
cal_backend_notify_mode (backend,
GNOME_Evolution_Calendar_Listener_MODE_NOT_SUPPORTED,
cal_mode_to_corba (priv->mode));
else
cal_backend_notify_mode (backend,
GNOME_Evolution_Calendar_Listener_MODE_SET,
set_mode);
}
static CalBackendSyncStatus
cal_backend_http_get_default_object (CalBackendSync *backend, Cal *cal, char **object)
{
CalComponent *comp;
return GNOME_Evolution_Calendar_Success;
}
/* Get_object_component handler for the file backend */
static CalBackendSyncStatus
cal_backend_http_get_object (CalBackendSync *backend, Cal *cal, const char *uid, const char *rid, char **object)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
CalComponent *comp = NULL;
gboolean free_comp = FALSE;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
g_return_val_if_fail (uid != NULL, GNOME_Evolution_Calendar_ObjectNotFound);
return GNOME_Evolution_Calendar_Success;
}
/* Get_timezone_object handler for the file backend */
static CalBackendSyncStatus
cal_backend_http_get_timezone (CalBackendSync *backend, Cal *cal, const char *tzid, char **object)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
icaltimezone *zone;
icalcomponent *icalcomp;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
g_return_val_if_fail (tzid != NULL, GNOME_Evolution_Calendar_ObjectNotFound);
return GNOME_Evolution_Calendar_Success;
}
/* Add_timezone handler for the file backend */
static CalBackendSyncStatus
cal_backend_http_add_timezone (CalBackendSync *backend, Cal *cal, const char *tzobj)
{
icalcomponent *tz_comp;
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
cbfile = (CalBackendHttp *) backend;
g_return_val_if_fail (IS_CAL_BACKEND_HTTP (cbfile), GNOME_Evolution_Calendar_OtherError);
g_return_val_if_fail (tzobj != NULL, GNOME_Evolution_Calendar_OtherError);
priv = cbfile->priv;
return GNOME_Evolution_Calendar_Success;
}
static CalBackendSyncStatus
cal_backend_http_set_default_timezone (CalBackendSync *backend, Cal *cal, const char *tzid)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
icaltimezone *zone;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
return GNOME_Evolution_Calendar_Success;
}
/* Get_objects_in_range handler for the file backend */
static CalBackendSyncStatus
cal_backend_http_get_object_list (CalBackendSync *backend, Cal *cal, const char *sexp, GList **objects)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
return GNOME_Evolution_Calendar_Success;
}
/* get_query handler for the file backend */
static void
cal_backend_http_start_query (CalBackend *backend, Query *query)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
}
/* Get_free_busy handler for the file backend */
static CalBackendSyncStatus
cal_backend_http_get_free_busy (CalBackendSync *backend, Cal *cal, GList *users,
time_t start, time_t end, GList **freebusy)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
gchar *address, *name;
icalcomponent *vfb;
char *calobj;
GList *l;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
g_return_val_if_fail (start != -1 && end != -1, GNOME_Evolution_Calendar_InvalidRange);
g_return_val_if_fail (start <= end, GNOME_Evolution_Calendar_InvalidRange);
return GNOME_Evolution_Calendar_Success;
}
/* Get_changes handler for the file backend */
static CalBackendSyncStatus
cal_backend_http_get_changes (CalBackendSync *backend, Cal *cal, const char *change_id,
GList **adds, GList **modifies, GList **deletes)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
g_return_val_if_fail (change_id != NULL, GNOME_Evolution_Calendar_ObjectNotFound);
return GNOME_Evolution_Calendar_Success;
}
/* Discard_alarm handler for the file backend */
static CalBackendSyncStatus
cal_backend_http_discard_alarm (CalBackendSync *backend, Cal *cal, const char *uid, const char *auid)
{
/* we just do nothing with the alarm */
return GNOME_Evolution_Calendar_Success;
}
static CalBackendSyncStatus
cal_backend_http_create_object (CalBackendSync *backend, Cal *cal, const char *calobj, char **uid)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
icalcomponent *icalcomp;
icalcomponent_kind kind;
CalComponent *comp;
const char *comp_uid;
struct icaltimetype current;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
g_return_val_if_fail (calobj != NULL, GNOME_Evolution_Calendar_ObjectNotFound);
return GNOME_Evolution_Calendar_Success;
}
static CalBackendSyncStatus
cal_backend_http_modify_object (CalBackendSync *backend, Cal *cal, const char *calobj,
CalObjModType mod, char **old_object)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
icalcomponent *icalcomp;
icalcomponent_kind kind;
const char *comp_uid;
CalComponent *comp;
struct icaltimetype current;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
g_return_val_if_fail (calobj != NULL, GNOME_Evolution_Calendar_ObjectNotFound);
return GNOME_Evolution_Calendar_Success;
}
/* Remove_object handler for the file backend */
static CalBackendSyncStatus
cal_backend_http_remove_object (CalBackendSync *backend, Cal *cal,
const char *uid, const char *rid,
CalObjModType mod, char **object)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
CalComponent *comp;
char *hash_rid;
GSList *categories;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
g_return_val_if_fail (uid != NULL, GNOME_Evolution_Calendar_ObjectNotFound);
return GNOME_Evolution_Calendar_Success;
}
/* Update_objects handler for the file backend. */
static CalBackendSyncStatus
cal_backend_http_receive_objects (CalBackendSync *backend, Cal *cal, const char *calobj)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
icalcomponent *toplevel_comp, *icalcomp = NULL;
icalcomponent_kind kind;
icalproperty_method method;
icalcomponent *subcomp;
GList *comps, *l;
CalBackendSyncStatus status = GNOME_Evolution_Calendar_Success;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
g_return_val_if_fail (calobj != NULL, GNOME_Evolution_Calendar_InvalidObject);
return status;
}
static CalBackendSyncStatus
cal_backend_http_send_objects (CalBackendSync *backend, Cal *cal, const char *calobj)
{
/* FIXME Put in a util routine to send stuff via email */
return GNOME_Evolution_Calendar_Success;
}
static icaltimezone *
cal_backend_http_internal_get_default_timezone (CalBackend *backend)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
return priv->default_zone;
}
static icaltimezone *
cal_backend_http_internal_get_timezone (CalBackend *backend, const char *tzid)
{
CalBackendHttp *cbfile;
CalBackendHttpPrivate *priv;
icaltimezone *zone;
cbfile = CAL_BACKEND_HTTP (backend);
priv = cbfile->priv;
if (!strcmp (tzid, "UTC"))
zone = icaltimezone_get_utc_timezone ();
else {
zone = icaltimezone_get_builtin_timezone_from_tzid (tzid);
}
return zone;
}
/* Object initialization function for the file backend */
static void
cal_backend_http_init (CalBackendHttp *cbfile, CalBackendHttpClass *class)
{
CalBackendHttpPrivate *priv;
g_message ("Webcal backend init.");
priv = g_new0 (CalBackendHttpPrivate, 1);
cbfile->priv = priv;
priv->uri = NULL;
#if 0
priv->config_listener = e_config_listener_new ();
#endif
}
/* Class initialization function for the file backend */
static void
cal_backend_http_class_init (CalBackendHttpClass *class)
{
GObjectClass *object_class;
CalBackendClass *backend_class;
CalBackendSyncClass *sync_class;
object_class = (GObjectClass *) class;
backend_class = (CalBackendClass *) class;
sync_class = (CalBackendSyncClass *) class;
parent_class = (CalBackendSyncClass *) g_type_class_peek_parent (class);
object_class->dispose = cal_backend_http_dispose;
object_class->finalize = cal_backend_http_finalize;
sync_class->is_read_only_sync = cal_backend_http_is_read_only;
sync_class->get_cal_address_sync = cal_backend_http_get_cal_address;
sync_class->get_alarm_email_address_sync = cal_backend_http_get_alarm_email_address;
sync_class->get_ldap_attribute_sync = cal_backend_http_get_ldap_attribute;
sync_class->get_static_capabilities_sync = cal_backend_http_get_static_capabilities;
sync_class->open_sync = cal_backend_http_open;
sync_class->remove_sync = cal_backend_http_remove;
sync_class->create_object_sync = cal_backend_http_create_object;
sync_class->modify_object_sync = cal_backend_http_modify_object;
sync_class->remove_object_sync = cal_backend_http_remove_object;
sync_class->discard_alarm_sync = cal_backend_http_discard_alarm;
sync_class->receive_objects_sync = cal_backend_http_receive_objects;
sync_class->send_objects_sync = cal_backend_http_send_objects;
sync_class->get_default_object_sync = cal_backend_http_get_default_object;
sync_class->get_object_sync = cal_backend_http_get_object;
sync_class->get_object_list_sync = cal_backend_http_get_object_list;
sync_class->get_timezone_sync = cal_backend_http_get_timezone;
sync_class->add_timezone_sync = cal_backend_http_add_timezone;
sync_class->set_default_timezone_sync = cal_backend_http_set_default_timezone;
sync_class->get_freebusy_sync = cal_backend_http_get_free_busy;
sync_class->get_changes_sync = cal_backend_http_get_changes;
backend_class->is_loaded = cal_backend_http_is_loaded;
backend_class->start_query = cal_backend_http_start_query;
backend_class->get_mode = cal_backend_http_get_mode;
backend_class->set_mode = cal_backend_http_set_mode;
backend_class->internal_get_default_timezone = cal_backend_http_internal_get_default_timezone;
backend_class->internal_get_timezone = cal_backend_http_internal_get_timezone;
}
/**
* cal_backend_http_get_type:
* @void:
*
* Registers the #CalBackendHttp class if necessary, and returns the type ID
* associated to it.
*
* Return value: The type ID of the #CalBackendHttp class.
**/
GType
cal_backend_http_get_type (void)
{
static GType cal_backend_http_type = 0;
g_message (G_STRLOC);
if (!cal_backend_http_type) {
static GTypeInfo info = {
sizeof (CalBackendHttpClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) cal_backend_http_class_init,
NULL, NULL,
sizeof (CalBackendHttp),
0,
(GInstanceInitFunc) cal_backend_http_init
};
cal_backend_http_type = g_type_register_static (CAL_TYPE_BACKEND_SYNC,
"CalBackendHttp", &info, 0);
}
return cal_backend_http_type;
}