path: root/calendar/gui/alarm-notify/alarm-notify.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- *
 *  Evolution calendar - Alarm notification service object
 *
 * Copyright (C) 2001 Ximian, Inc.
 *
 * Author: Federico Mena-Quintero <federico@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.
 */

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

#include <string.h>
#include <bonobo/bonobo-main.h>
#include <libedataserver/e-url.h>
#include <libedataserver/e-data-server-util.h>
#include <libedataserverui/e-passwords.h>
#include <libecal/e-cal.h>
#include "alarm-notify.h"
#include "alarm-queue.h"
#include "config-data.h"
#include "common/authentication.h"

/* Private part of the AlarmNotify structure */
struct _AlarmNotifyPrivate {
    /* Mapping from EUri's to LoadedClient structures */
    /* FIXME do we need per source type uri hashes? or perhaps we
       just need to hash based on source */
    GHashTable *uri_client_hash [E_CAL_SOURCE_TYPE_LAST];
        ESourceList *source_lists [E_CAL_SOURCE_TYPE_LAST]; 
    ESourceList *selected_calendars;
        GMutex *mutex;
};

EThread *alarm_operation_thread;    /* for operations that can (or should) be queued */
EMsgPort *alarm_reply_port;
static GIOChannel *alarm_reply_channel;

#define d(x) x


static void alarm_notify_class_init (AlarmNotifyClass *klass);
static void alarm_notify_init (AlarmNotify *an, AlarmNotifyClass *klass);
static void alarm_notify_finalize (GObject *object);


static BonoboObjectClass *parent_class;


BONOBO_TYPE_FUNC_FULL(AlarmNotify, GNOME_Evolution_Calendar_AlarmNotify, BONOBO_TYPE_OBJECT, alarm_notify)

/* Class initialization function for the alarm notify service */
static void
alarm_notify_class_init (AlarmNotifyClass *klass)
{
    GObjectClass *object_class;

    object_class = (GObjectClass *) klass;

    parent_class = g_type_class_peek_parent (klass);

    object_class->finalize = alarm_notify_finalize;
}

typedef struct {
    AlarmNotify *an;
    ESourceList *source_list;
    GList *removals;
} ProcessRemovalsData;

static void
process_removal_in_hash (gpointer key, gpointer value, gpointer data)
{
    char *uri = key;
    ProcessRemovalsData *prd = data;
    GSList *groups, *sources, *p, *q;
    gboolean found = FALSE;
    
    /* search the list of selected calendars */
    groups = e_source_list_peek_groups (prd->source_list);
    for (p = groups; p != NULL; p = p->next) {
        ESourceGroup *group = E_SOURCE_GROUP (p->data);
        
        sources = e_source_group_peek_sources (group);
        for (q = sources; q != NULL; q = q->next) {
            ESource *source = E_SOURCE (q->data);
            char *source_uri;
            const char *completion = e_source_get_property (source, "alarm");
            
            source_uri = e_source_get_uri (source);
            if (strcmp (source_uri, uri) == 0)
                if (!completion || !g_ascii_strcasecmp (completion, "true"))
                    found = TRUE;
            
            g_free (source_uri);

            if (found)
                return;
        }
    }

    /* not found, so list it for removal */
    prd->removals = g_list_prepend (prd->removals, uri);
}

static void
list_changed_cb (ESourceList *source_list, gpointer data)
{
    AlarmNotify *an = data;
    AlarmNotifyPrivate *priv;
    GSList *groups, *sources, *p, *q;
    ECalSourceType source_type = E_CAL_SOURCE_TYPE_LAST;
    ProcessRemovalsData prd;
    GList *l;
    int i;

    g_signal_handlers_block_by_func(source_list, list_changed_cb, data);
    
    priv = an->priv;

    /* Figure out the source type */
    for (i = 0; i < E_CAL_SOURCE_TYPE_LAST; i++) {
        if (source_list == priv->source_lists[i]) {
            source_type = i;
            break;
        }
    }
    if (source_type == E_CAL_SOURCE_TYPE_LAST)
        return;
    
    /* process the additions */
    groups = e_source_list_peek_groups (source_list);
    for (p = groups; p != NULL; p = p->next) {
        ESourceGroup *group = E_SOURCE_GROUP (p->data);
        
        sources = e_source_group_peek_sources (group);
        for (q = sources; q != NULL; q = q->next) {
            ESource *source = E_SOURCE (q->data);
            char *uri;
            const char *completion = e_source_get_property (source, "alarm");
            
            if (completion  && (!g_ascii_strcasecmp (completion, "false") || 
                        !g_ascii_strcasecmp (completion, "never")))
                continue;
            
            uri = e_source_get_uri (source);
            if (!g_hash_table_lookup (priv->uri_client_hash[source_type], uri)) {
                d (printf("%s:%d (list_changed_cb) - Adding Calendar %s\n", __FILE__, __LINE__, uri));              
                alarm_notify_add_calendar (an, source_type, source, FALSE);
            }
            g_free (uri);
        }
    }

    /* process the removals */
    prd.an = an;
    prd.source_list = priv->source_lists[source_type];
    prd.removals = NULL;
    g_hash_table_foreach (priv->uri_client_hash[source_type], (GHFunc) process_removal_in_hash, &prd);

    for (l = prd.removals; l; l = l->next) {
        d (printf("%s:%d (list_changed_cb) - Removing Calendar %s\n", __FILE__, __LINE__, (char *)l->data));
        alarm_notify_remove_calendar (an, source_type, l->data);
    }
    g_list_free (prd.removals);
    g_signal_handlers_unblock_by_func(source_list, list_changed_cb, data);
    
}

ESourceList *
alarm_notify_get_selected_calendars (AlarmNotify *an)
{
    return an->priv->selected_calendars;
}

static void
load_calendars (AlarmNotify *an, ECalSourceType source_type)
{
    AlarmNotifyPrivate *priv;
    ESourceList *source_list;
    GSList *groups, *sources, *p, *q;

    priv = an->priv;
    
    if (!e_cal_get_sources (&source_list, source_type, NULL)) {
        d (printf("%s:%d (load_calendars) - Cannont get sources\n ", __FILE__, __LINE__));
        priv->source_lists[source_type] = NULL;

        return;
    }

    groups = e_source_list_peek_groups (source_list);
    for (p = groups; p != NULL; p = p->next) {
        ESourceGroup *group = E_SOURCE_GROUP (p->data);
        
        sources = e_source_group_peek_sources (group);
        for (q = sources; q != NULL; q = q->next) {
            ESource *source = E_SOURCE (q->data);
            char *uri;
            const char *completion = e_source_get_property (source, "alarm");
            
            if (completion  && (!g_ascii_strcasecmp (completion, "false") ||
                        !g_ascii_strcasecmp (completion, "never"))) 
                continue;
            
            uri = e_source_get_uri (source);
            d (printf("%s:%d (load_calendars) - Loading Calendar %s \n", __FILE__, __LINE__, uri));         
            alarm_notify_add_calendar (an, source_type, source, FALSE);
            g_free (uri);
            
        }
    }

    g_signal_connect_object (source_list, "changed", G_CALLBACK (list_changed_cb), an, 0);
    priv->source_lists[source_type] = source_list;
}

/* Object initialization function for the alarm notify system */
static void
alarm_notify_init (AlarmNotify *an, AlarmNotifyClass *klass)
{
    AlarmNotifyPrivate *priv;
    int i;

    priv = g_new0 (AlarmNotifyPrivate, 1);
    an->priv = priv;
    priv->mutex = g_mutex_new ();
    priv->selected_calendars = config_data_get_calendars ("/apps/evolution/calendar/sources");

    d (printf("%s:%d (alarm_notify_init) - Initing Alarm Notify\n", __FILE__, __LINE__));
    
    for (i = 0; i < E_CAL_SOURCE_TYPE_LAST; i++)
        priv->uri_client_hash[i] = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref);

    alarm_queue_init (an);

    for (i = 0; i < E_CAL_SOURCE_TYPE_LAST; i++)
        load_calendars (an, i);
}

static void
dequeue_client (gpointer key, gpointer value, gpointer user_data)
{
    ECal *client = value;

    d (printf("%s:%d (dequeue_client) - Removing client %p\n ", __FILE__, __LINE__, client));
    alarm_queue_remove_client (client);
}

/* Finalize handler for the alarm notify system */
static void
alarm_notify_finalize (GObject *object)
{
    AlarmNotify *an;
    AlarmNotifyPrivate *priv;
    int i;
    
    g_return_if_fail (object != NULL);
    g_return_if_fail (IS_ALARM_NOTIFY (object));
    
    d (printf("%s:%d (alarm_notify_finalize) - Finalize \n ", __FILE__, __LINE__));
    
    an = ALARM_NOTIFY (object);
    priv = an->priv;

    for (i = 0; i < E_CAL_SOURCE_TYPE_LAST; i++) {
        g_hash_table_foreach (priv->uri_client_hash[i], dequeue_client, NULL);
        g_hash_table_destroy (priv->uri_client_hash[i]);
    }

    alarm_queue_done ();

    g_mutex_free (priv->mutex);
    g_free (priv);

    e_thread_destroy(alarm_operation_thread);
    g_io_channel_unref(alarm_reply_channel);
    e_msgport_destroy(alarm_reply_port);
    if (G_OBJECT_CLASS (parent_class)->finalize)
        (* G_OBJECT_CLASS (parent_class)->finalize) (object);
}



static guint
alarm_channel_setup(EMsgPort **port, GIOChannel **channel, GIOFunc func)
{
    GSource *source;
    guint id;

    d (printf("%s:%d (alarm_channel_setup) - Channel Setup\n ", __FILE__, __LINE__));
    *port = e_msgport_new();
#ifndef G_OS_WIN32
    *channel = g_io_channel_unix_new(e_msgport_fd(*port));
#else
    *channel = g_io_channel_win32_new_socket(e_msgport_fd(*port));
#endif
    source = g_io_create_watch(*channel, G_IO_IN);
    g_source_set_callback(source, (GSourceFunc)func, *port, NULL);
    g_source_set_can_recurse(source, FALSE);
    id = g_source_attach(source, NULL);
    g_source_unref(source);

    return id;
}

static void
alarm_msg_destroy(EThread *e, EMsg *msg, void *data)
{
    AlarmMsg *m = (AlarmMsg *)msg;

    /* Free the private */
    g_free (m->data); /* Mostly it is a structure allocated as a carrier*/
    g_free (m);
}

static gboolean
alarm_msgport_replied(GIOChannel *source, GIOCondition cond, void *d)
{
    EMsgPort *port = (EMsgPort *)d;
    EMsg *m;

    while (( m = e_msgport_get(port))) {
        d (printf("%s:%d (alarm_msgport_replied) - %p: Replied to GUI thread\n", __FILE__, __LINE__, m));
        alarm_msg_destroy(NULL, m, NULL);
    }

    return TRUE;
}

static void
alarm_msg_received(EThread *e, EMsg *msg, void *data)
{
    AlarmMsg *m = (AlarmMsg *)msg;
    
    d(printf("%s:%d (alarm_msg_received) - %p: Received at thread %" G_GINT64_MODIFIER "x\n", __FILE__, __LINE__, m, e_util_pthread_id(pthread_self())));   
    if (m->receive_msg) {
        m->receive_msg (e, m, data);
    }
}

/**
 * alarm_notify_new:
 * 
 * Creates a new #AlarmNotify object.
 * 
 * Return value: A newly-created #AlarmNotify, or NULL if its corresponding
 * CORBA object could not be created.
 **/
AlarmNotify *
alarm_notify_new (void)
{
    AlarmNotify *an;
    
    d (printf("%s:%d (alarm_notify_new) - Alarm Notify New \n ", __FILE__, __LINE__));

    /* Create a thread for alarm queue operation*/  
    alarm_channel_setup(&alarm_reply_port, &alarm_reply_channel, alarm_msgport_replied);

    alarm_operation_thread = e_thread_new(E_THREAD_QUEUE);
    e_thread_set_msg_destroy(alarm_operation_thread, alarm_msg_destroy, 0);
    e_thread_set_msg_received(alarm_operation_thread, alarm_msg_received, 0);
    e_thread_set_reply_port(alarm_operation_thread, alarm_reply_port);

    an = g_object_new (TYPE_ALARM_NOTIFY,
               "poa", bonobo_poa_get_threaded (ORBIT_THREAD_HINT_PER_REQUEST, NULL),
               NULL);
    
    return an;
}

static void
cal_opened_cb (ECal *client, ECalendarStatus status, gpointer user_data)
{
    AlarmNotifyPrivate *priv;
    AlarmNotify *an = ALARM_NOTIFY (user_data);

    priv = an->priv;
    
    d (printf("%s:%d (cal_opened_cb) %s - Calendar Status %d\n", __FILE__, __LINE__, e_cal_get_uri (client), status));
    
    if (status == E_CALENDAR_STATUS_OK)
        alarm_queue_add_client (client);
    else {
        g_hash_table_remove (priv->uri_client_hash[e_cal_get_source_type (client)],
                     e_cal_get_uri (client));
        g_signal_handlers_disconnect_matched (G_OBJECT (client), G_SIGNAL_MATCH_DATA,
                              0, 0, NULL, NULL, an);
    }
}

/**
 * alarm_notify_add_calendar:
 * @an: An alarm notification service.
 * @uri: URI of the calendar to load.
 * @load_afterwards: Whether this calendar should be loaded in the future
 * when the alarm daemon starts up.
 * 
 * Tells the alarm notification service to load a calendar and start monitoring
 * its alarms.  It can optionally be made to save the URI of this calendar so
 * that it can be loaded in the future when the alarm daemon starts up.
 **/
void
alarm_notify_add_calendar (AlarmNotify *an, ECalSourceType source_type,  ESource *source, gboolean load_afterwards)
{
    AlarmNotifyPrivate *priv;
    ECal *client;
    EUri *e_uri;
    char *str_uri;
    char *pass_key;
    g_return_if_fail (an != NULL);
    g_return_if_fail (IS_ALARM_NOTIFY (an));

    /* Make sure the key used in for getting password is properly generated for all types of backends */
    priv = an->priv;
    str_uri = e_source_get_uri (source);
    e_uri = e_uri_new (str_uri);
    pass_key = e_uri_to_string (e_uri, FALSE);
    e_uri_free (e_uri);
    
    g_mutex_lock (an->priv->mutex);
    /* See if we already know about this uri */
    if (g_hash_table_lookup (priv->uri_client_hash[source_type], str_uri)) {
        g_mutex_unlock (an->priv->mutex);
        g_free (str_uri);
        g_free (pass_key);
        return;
    }
    /* if loading of this requires password and password is not currently availble in e-password
       session skip this source loading. we do not really want to prompt for auth from alarm dameon*/

    if ((e_source_get_property (source, "auth") && 
         (!e_passwords_get_password (e_source_get_property(source, "auth-domain"), pass_key)))) {
        g_mutex_unlock (an->priv->mutex);
        g_free (str_uri);
        g_free (pass_key);
        return;
    }
    
    client = auth_new_cal_from_source (source, source_type);

    if (client) {
        d (printf("%s:%d (alarm_notify_add_calendar) %s - Calendar Open Async... %p\n", __FILE__, __LINE__, str_uri, client));  
        g_hash_table_insert (priv->uri_client_hash[source_type], g_strdup (str_uri), client);
        g_signal_connect (G_OBJECT (client), "cal_opened", G_CALLBACK (cal_opened_cb), an);
        e_cal_open_async (client, FALSE);
    }
    g_free (str_uri);
    g_free (pass_key);
    g_mutex_unlock (an->priv->mutex);
}

void
alarm_notify_remove_calendar (AlarmNotify *an, ECalSourceType source_type, const char *str_uri)
{
    AlarmNotifyPrivate *priv;
    ECal *client;
    
    priv = an->priv;

    client = g_hash_table_lookup (priv->uri_client_hash[source_type], str_uri);
    if (client) {
        d (printf("%s:%d (alarm_notify_remove_calendar) - Removing Client %p\n", __FILE__, __LINE__, client));
        alarm_queue_remove_client (client);
        g_hash_table_remove (priv->uri_client_hash[source_type], str_uri);
    }
}