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asterisk/res/res_calendar.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2008 - 2009, Digium, Inc.
*
* Terry Wilson <twilson@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
* \brief Calendaring API
*
* \todo Support responding to a meeting invite
* \todo Support writing attendees
*/
/*** MODULEINFO
<support_level>core</support_level>
***/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/_private.h"
#include "asterisk/calendar.h"
#include "asterisk/utils.h"
#include "asterisk/astobj2.h"
#include "asterisk/module.h"
#include "asterisk/config.h"
#include "asterisk/channel.h"
#include "asterisk/devicestate.h"
#include "asterisk/linkedlists.h"
#include "asterisk/sched.h"
#include "asterisk/dial.h"
#include "asterisk/cli.h"
#include "asterisk/pbx.h"
#include "asterisk/app.h"
/*** DOCUMENTATION
<function name="CALENDAR_BUSY" language="en_US">
<synopsis>
Determine if the calendar is marked busy at this time.
</synopsis>
<syntax>
<parameter name="calendar" required="true" />
</syntax>
<description>
<para>Check the specified calendar's current busy status.</para>
</description>
<see-also>
<ref type="function">CALENDAR_EVENT</ref>
<ref type="function">CALENDAR_QUERY</ref>
<ref type="function">CALENDAR_QUERY_RESULT</ref>
<ref type="function">CALENDAR_WRITE</ref>
</see-also>
</function>
<function name="CALENDAR_EVENT" language="en_US">
<synopsis>
Get calendar event notification data from a notification call.
</synopsis>
<syntax>
<parameter name="field" required="true">
<enumlist>
<enum name="summary"><para>The VEVENT SUMMARY property or Exchange event 'subject'</para></enum>
<enum name="description"><para>The text description of the event</para></enum>
<enum name="organizer"><para>The organizer of the event</para></enum>
<enum name="location"><para>The location of the eventt</para></enum>
<enum name="categories"><para>The categories of the event</para></enum>
<enum name="priority"><para>The priority of the event</para></enum>
<enum name="calendar"><para>The name of the calendar associated with the event</para></enum>
<enum name="uid"><para>The unique identifier for this event</para></enum>
<enum name="start"><para>The start time of the event</para></enum>
<enum name="end"><para>The end time of the event</para></enum>
<enum name="busystate"><para>The busy state of the event 0=FREE, 1=TENTATIVE, 2=BUSY</para></enum>
</enumlist>
</parameter>
</syntax>
<description>
<para>Whenever a calendar event notification call is made, the event data
may be accessed with this function.</para>
</description>
<see-also>
<ref type="function">CALENDAR_BUSY</ref>
<ref type="function">CALENDAR_QUERY</ref>
<ref type="function">CALENDAR_QUERY_RESULT</ref>
<ref type="function">CALENDAR_WRITE</ref>
</see-also>
</function>
<function name="CALENDAR_QUERY" language="en_US">
<synopsis>Query a calendar server and store the data on a channel
</synopsis>
<syntax>
<parameter name="calendar" required="true">
<para>The calendar that should be queried</para>
</parameter>
<parameter name="start" required="false">
<para>The start time of the query (in seconds since epoch)</para>
</parameter>
<parameter name="end" required="false">
<para>The end time of the query (in seconds since epoch)</para>
</parameter>
</syntax>
<description>
<para>Get a list of events in the currently accessible timeframe of the <replaceable>calendar</replaceable>
The function returns the id for accessing the result with CALENDAR_QUERY_RESULT()</para>
</description>
<see-also>
<ref type="function">CALENDAR_BUSY</ref>
<ref type="function">CALENDAR_EVENT</ref>
<ref type="function">CALENDAR_QUERY_RESULT</ref>
<ref type="function">CALENDAR_WRITE</ref>
</see-also>
</function>
<function name="CALENDAR_QUERY_RESULT" language="en_US">
<synopsis>
Retrieve data from a previously run CALENDAR_QUERY() call
</synopsis>
<syntax>
<parameter name="id" required="true">
<para>The query ID returned by <literal>CALENDAR_QUERY</literal></para>
</parameter>
<parameter name="field" required="true">
<enumlist>
<enum name="getnum"><para>number of events occurring during time range</para></enum>
<enum name="summary"><para>A summary of the event</para></enum>
<enum name="description"><para>The full event description</para></enum>
<enum name="organizer"><para>The event organizer</para></enum>
<enum name="location"><para>The event location</para></enum>
<enum name="categories"><para>The categories of the event</para></enum>
<enum name="priority"><para>The priority of the event</para></enum>
<enum name="calendar"><para>The name of the calendar associted with the event</para></enum>
<enum name="uid"><para>The unique identifier for the event</para></enum>
<enum name="start"><para>The start time of the event (in seconds since epoch)</para></enum>
<enum name="end"><para>The end time of the event (in seconds since epoch)</para></enum>
<enum name="busystate"><para>The busy status of the event 0=FREE, 1=TENTATIVE, 2=BUSY</para></enum>
</enumlist>
</parameter>
<parameter name="entry" required="false" default="1">
<para>Return data from a specific event returned by the query</para>
</parameter>
</syntax>
<description>
<para>After running CALENDAR_QUERY and getting a result <replaceable>id</replaceable>, calling
<literal>CALENDAR_QUERY</literal> with that <replaceable>id</replaceable> and a <replaceable>field</replaceable>
will return the data for that field. If multiple events matched the query, and <replaceable>entry</replaceable>
is provided, information from that event will be returned.</para>
</description>
<see-also>
<ref type="function">CALENDAR_BUSY</ref>
<ref type="function">CALENDAR_EVENT</ref>
<ref type="function">CALENDAR_QUERY</ref>
<ref type="function">CALENDAR_WRITE</ref>
</see-also>
</function>
<function name="CALENDAR_WRITE" language="en_US">
<synopsis>Write an event to a calendar</synopsis>
<syntax>
<parameter name="calendar" required="true">
<para>The calendar to write to</para>
</parameter>
<parameter name="field" multiple="true" required="true">
<enumlist>
<enum name="summary"><para>A summary of the event</para></enum>
<enum name="description"><para>The full event description</para></enum>
<enum name="organizer"><para>The event organizer</para></enum>
<enum name="location"><para>The event location</para></enum>
<enum name="categories"><para>The categories of the event</para></enum>
<enum name="priority"><para>The priority of the event</para></enum>
<enum name="uid"><para>The unique identifier for the event</para></enum>
<enum name="start"><para>The start time of the event (in seconds since epoch)</para></enum>
<enum name="end"><para>The end time of the event (in seconds since epoch)</para></enum>
<enum name="busystate"><para>The busy status of the event 0=FREE, 1=TENTATIVE, 2=BUSY</para></enum>
</enumlist>
</parameter>
</syntax>
<description>
<para>Example: CALENDAR_WRITE(calendar,field1,field2,field3)=val1,val2,val3</para>
<para>The field and value arguments can easily be set/passed using the HASHKEYS() and HASH() functions</para>
</description>
<see-also>
<ref type="function">CALENDAR_BUSY</ref>
<ref type="function">CALENDAR_EVENT</ref>
<ref type="function">CALENDAR_QUERY</ref>
<ref type="function">CALENDAR_QUERY_RESULT</ref>
</see-also>
</function>
***/
#define CALENDAR_BUCKETS 19
static struct ao2_container *calendars;
static struct ast_sched_context *sched;
static pthread_t refresh_thread = AST_PTHREADT_NULL;
static ast_mutex_t refreshlock;
static ast_cond_t refresh_condition;
static ast_mutex_t reloadlock;
static void event_notification_destroy(void *data);
static void *event_notification_duplicate(void *data);
static void eventlist_destroy(void *data);
static void *eventlist_duplicate(void *data);
static const struct ast_datastore_info event_notification_datastore = {
.type = "EventNotification",
.destroy = event_notification_destroy,
.duplicate = event_notification_duplicate,
};
static const struct ast_datastore_info eventlist_datastore_info = {
.type = "CalendarEventList",
.destroy = eventlist_destroy,
.duplicate = eventlist_duplicate,
};
struct evententry {
struct ast_calendar_event *event;
AST_LIST_ENTRY(evententry) list;
};
static AST_LIST_HEAD_STATIC(techs, ast_calendar_tech);
AST_LIST_HEAD_NOLOCK(eventlist, evententry); /* define the type */
static struct ast_config *calendar_config;
AST_RWLOCK_DEFINE_STATIC(config_lock);
const struct ast_config *ast_calendar_config_acquire(void)
{
ast_rwlock_rdlock(&config_lock);
if (!calendar_config) {
ast_rwlock_unlock(&config_lock);
return NULL;
}
return calendar_config;
}
void ast_calendar_config_release(void)
{
ast_rwlock_unlock(&config_lock);
}
static struct ast_calendar *unref_calendar(struct ast_calendar *cal)
{
ao2_ref(cal, -1);
return NULL;
}
static int calendar_hash_fn(const void *obj, const int flags)
{
const struct ast_calendar *cal = obj;
return ast_str_case_hash(cal->name);
}
static int calendar_cmp_fn(void *obj, void *arg, int flags)
{
const struct ast_calendar *one = obj, *two = arg;
return !strcasecmp(one->name, two->name) ? CMP_MATCH | CMP_STOP: 0;
}
static struct ast_calendar *find_calendar(const char *name)
{
struct ast_calendar tmp = {
.name = name,
};
return ao2_find(calendars, &tmp, OBJ_POINTER);
}
static int event_hash_fn(const void *obj, const int flags)
{
const struct ast_calendar_event *event = obj;
return ast_str_hash(event->uid);
}
static int event_cmp_fn(void *obj, void *arg, int flags)
{
const struct ast_calendar_event *one = obj, *two = arg;
return !strcmp(one->uid, two->uid) ? CMP_MATCH | CMP_STOP : 0;
}
static struct ast_calendar_event *find_event(struct ao2_container *events, const char *uid)
{
struct ast_calendar_event tmp = {
.uid = uid,
};
return ao2_find(events, &tmp, OBJ_POINTER);
}
struct ast_calendar_event *ast_calendar_unref_event(struct ast_calendar_event *event)
{
ao2_ref(event, -1);
return NULL;
}
static void calendar_destructor(void *obj)
{
struct ast_calendar *cal = obj;
ast_debug(3, "Destroying calendar %s\n", cal->name);
ao2_lock(cal);
cal->unloading = 1;
ast_cond_signal(&cal->unload);
pthread_join(cal->thread, NULL);
if (cal->tech_pvt) {
cal->tech_pvt = cal->tech->unref_calendar(cal->tech_pvt);
}
ast_calendar_clear_events(cal);
ast_string_field_free_memory(cal);
if (cal->vars) {
ast_variables_destroy(cal->vars);
cal->vars = NULL;
}
ao2_ref(cal->events, -1);
ao2_unlock(cal);
}
static void eventlist_destructor(void *obj)
{
struct eventlist *events = obj;
struct evententry *entry;
while ((entry = AST_LIST_REMOVE_HEAD(events, list))) {
ao2_ref(entry->event, -1);
ast_free(entry);
}
}
static int calendar_busy_callback(void *obj, void *arg, int flags)
{
struct ast_calendar_event *event = obj;
int *is_busy = arg;
struct timeval tv = ast_tvnow();
if (tv.tv_sec >= event->start && tv.tv_sec <= event->end && event->busy_state > AST_CALENDAR_BS_FREE) {
*is_busy = 1;
return CMP_STOP;
}
return 0;
}
static int calendar_is_busy(struct ast_calendar *cal)
{
int is_busy = 0;
ao2_callback(cal->events, OBJ_NODATA, calendar_busy_callback, &is_busy);
return is_busy;
}
static enum ast_device_state calendarstate(const char *data)
{
struct ast_calendar *cal;
if (ast_strlen_zero(data) || (!(cal = find_calendar(data)))) {
return AST_DEVICE_INVALID;
}
if (cal->tech->is_busy) {
return cal->tech->is_busy(cal) ? AST_DEVICE_INUSE : AST_DEVICE_NOT_INUSE;
}
return calendar_is_busy(cal) ? AST_DEVICE_INUSE : AST_DEVICE_NOT_INUSE;
}
static struct ast_calendar *build_calendar(struct ast_config *cfg, const char *cat, const struct ast_calendar_tech *tech)
{
struct ast_calendar *cal;
struct ast_variable *v, *last = NULL;
int new_calendar = 0;
if (!(cal = find_calendar(cat))) {
new_calendar = 1;
if (!(cal = ao2_alloc(sizeof(*cal), calendar_destructor))) {
ast_log(LOG_ERROR, "Could not allocate calendar structure. Stopping.\n");
return NULL;
}
if (!(cal->events = ao2_container_alloc(CALENDAR_BUCKETS, event_hash_fn, event_cmp_fn))) {
ast_log(LOG_ERROR, "Could not allocate events container for %s\n", cat);
cal = unref_calendar(cal);
return NULL;
}
if (ast_string_field_init(cal, 32)) {
ast_log(LOG_ERROR, "Couldn't create string fields for %s\n", cat);
cal = unref_calendar(cal);
return NULL;
}
} else {
cal->pending_deletion = 0;
}
ast_string_field_set(cal, name, cat);
cal->tech = tech;
cal->refresh = 3600;
cal->timeframe = 60;
cal->notify_waittime = 30000;
for (v = ast_variable_browse(cfg, cat); v; v = v->next) {
if (!strcasecmp(v->name, "autoreminder")) {
cal->autoreminder = atoi(v->value);
} else if (!strcasecmp(v->name, "channel")) {
ast_string_field_set(cal, notify_channel, v->value);
} else if (!strcasecmp(v->name, "context")) {
ast_string_field_set(cal, notify_context, v->value);
} else if (!strcasecmp(v->name, "extension")) {
ast_string_field_set(cal, notify_extension, v->value);
} else if (!strcasecmp(v->name, "waittime")) {
int i = atoi(v->value);
if (i > 0) {
cal->notify_waittime = 1000 * i;
}
} else if (!strcasecmp(v->name, "app")) {
ast_string_field_set(cal, notify_app, v->value);
} else if (!strcasecmp(v->name, "appdata")) {
ast_string_field_set(cal, notify_appdata, v->value);
} else if (!strcasecmp(v->name, "refresh")) {
cal->refresh = atoi(v->value);
} else if (!strcasecmp(v->name, "timeframe")) {
cal->timeframe = atoi(v->value);
} else if (!strcasecmp(v->name, "setvar")) {
char *name, *value;
struct ast_variable *var;
if ((name = (value = ast_strdup(v->value)))) {
strsep(&value, "=");
if (value) {
if ((var = ast_variable_new(ast_strip(name), ast_strip(value), ""))) {
if (last) {
last->next = var;
} else {
cal->vars = var;
}
last = var;
}
} else {
ast_log(LOG_WARNING, "Malformed argument. Should be '%s: variable=value'\n", v->name);
}
ast_free(name);
}
}
}
if (new_calendar) {
cal->thread = AST_PTHREADT_NULL;
ast_cond_init(&cal->unload, NULL);
ao2_link(calendars, cal);
if (ast_pthread_create(&cal->thread, NULL, cal->tech->load_calendar, cal)) {
/* If we start failing to create threads, go ahead and return NULL
* and the tech module will be unregistered
*/
ao2_unlink(calendars, cal);
cal = unref_calendar(cal);
}
}
return cal;
}
static int load_tech_calendars(struct ast_calendar_tech *tech)
{
struct ast_calendar *cal;
const char *cat = NULL;
const char *val;
if (!calendar_config) {
ast_log(LOG_WARNING, "Calendar support disabled, not loading %s calendar module\n", tech->type);
return -1;
}
ast_rwlock_wrlock(&config_lock);
while ((cat = ast_category_browse(calendar_config, cat))) {
if (!strcasecmp(cat, "general")) {
continue;
}
if (!(val = ast_variable_retrieve(calendar_config, cat, "type")) || strcasecmp(val, tech->type)) {
continue;
}
/* A serious error occurred loading calendars from this tech and it should be disabled */
if (!(cal = build_calendar(calendar_config, cat, tech))) {
ast_calendar_unregister(tech);
ast_rwlock_unlock(&config_lock);
return -1;
}
cal = unref_calendar(cal);
}
ast_rwlock_unlock(&config_lock);
return 0;
}
int ast_calendar_register(struct ast_calendar_tech *tech)
{
struct ast_calendar_tech *iter;
AST_LIST_LOCK(&techs);
AST_LIST_TRAVERSE(&techs, iter, list) {
if(!strcasecmp(tech->type, iter->type)) {
ast_log(LOG_WARNING, "Already have a handler for calendar type '%s'\n", tech->type);
AST_LIST_UNLOCK(&techs);
return -1;
}
}
AST_LIST_INSERT_HEAD(&techs, tech, list);
AST_LIST_UNLOCK(&techs);
ast_verb(2, "Registered calendar type '%s' (%s)\n", tech->type, tech->description);
return load_tech_calendars(tech);
}
static int match_caltech_cb(void *user_data, void *arg, int flags)
{
struct ast_calendar *cal = user_data;
struct ast_calendar_tech *tech = arg;
if (cal->tech == tech) {
return CMP_MATCH;
}
return 0;
}
void ast_calendar_unregister(struct ast_calendar_tech *tech)
{
struct ast_calendar_tech *iter;
AST_LIST_LOCK(&techs);
AST_LIST_TRAVERSE_SAFE_BEGIN(&techs, iter, list) {
if (iter != tech) {
continue;
}
ao2_callback(calendars, OBJ_UNLINK | OBJ_NODATA | OBJ_MULTIPLE, match_caltech_cb, tech);
AST_LIST_REMOVE_CURRENT(list);
ast_verb(2, "Unregistered calendar type '%s'\n", tech->type);
break;
}
AST_LIST_TRAVERSE_SAFE_END;
AST_LIST_UNLOCK(&techs);
}
static void calendar_event_destructor(void *obj)
{
struct ast_calendar_event *event = obj;
struct ast_calendar_attendee *attendee;
ast_debug(3, "Destroying event for calendar '%s'\n", event->owner->name);
ast_string_field_free_memory(event);
while ((attendee = AST_LIST_REMOVE_HEAD(&event->attendees, next))) {
if (attendee->data) {
ast_free(attendee->data);
}
ast_free(attendee);
}
}
/* This is only called from ao2_callbacks that are going to unref the event for us,
* so we don't unref the event here. */
static struct ast_calendar_event *destroy_event(struct ast_calendar_event *event)
{
if (event->notify_sched > -1 && ast_sched_del(sched, event->notify_sched)) {
ast_debug(3, "Notification running, can't delete sched entry\n");
}
if (event->bs_start_sched > -1 && ast_sched_del(sched, event->bs_start_sched)) {
ast_debug(3, "Devicestate update (start) running, can't delete sched entry\n");
}
if (event->bs_end_sched > -1 && ast_sched_del(sched, event->bs_end_sched)) {
ast_debug(3, "Devicestate update (end) running, can't delete sched entry\n");
}
/* If an event is being deleted and we've fired an event changing the status at the beginning,
* but haven't hit the end event yet, go ahead and set the devicestate to the current busy status */
if (event->bs_start_sched < 0 && event->bs_end_sched >= 0) {
if (!calendar_is_busy(event->owner)) {
ast_devstate_changed(AST_DEVICE_NOT_INUSE, "Calendar:%s", event->owner->name);
} else {
ast_devstate_changed(AST_DEVICE_BUSY, "Calendar:%s", event->owner->name);
}
}
return NULL;
}
static int clear_events_cb(void *user_data, void *arg, int flags)
{
struct ast_calendar_event *event = user_data;
event = destroy_event(event);
return CMP_MATCH;
}
void ast_calendar_clear_events(struct ast_calendar *cal)
{
ast_debug(3, "Clearing all events for calendar %s\n", cal->name);
ao2_callback(cal->events, OBJ_UNLINK | OBJ_NODATA | OBJ_MULTIPLE, clear_events_cb, NULL);
}
struct ast_calendar_event *ast_calendar_event_alloc(struct ast_calendar *cal)
{
struct ast_calendar_event *event;
if (!(event = ao2_alloc(sizeof(*event), calendar_event_destructor))) {
return NULL;
}
if (ast_string_field_init(event, 32)) {
event = ast_calendar_unref_event(event);
return NULL;
}
event->owner = cal;
event->notify_sched = -1;
event->bs_start_sched = -1;
event->bs_end_sched = -1;
AST_LIST_HEAD_INIT_NOLOCK(&event->attendees);
return event;
}
struct ao2_container *ast_calendar_event_container_alloc(void)
{
return ao2_container_alloc(CALENDAR_BUCKETS, event_hash_fn, event_cmp_fn);
}
static void event_notification_destroy(void *data)
{
struct ast_calendar_event *event = data;
event = ast_calendar_unref_event(event);
}
static void *event_notification_duplicate(void *data)
{
struct ast_calendar_event *event = data;
if (!event) {
return NULL;
}
ao2_ref(event, +1);
return event;
}
/*! \brief Generate 32 byte random string (stolen from chan_sip.c)*/
static char *generate_random_string(char *buf, size_t size)
{
long val[4];
int x;
for (x = 0; x < 4; x++) {
val[x] = ast_random();
}
snprintf(buf, size, "%08lx%08lx%08lx%08lx", val[0], val[1], val[2], val[3]);
return buf;
}
static int null_chan_write(struct ast_channel *chan, struct ast_frame *frame)
{
return 0;
}
static const struct ast_channel_tech null_tech = {
.type = "NULL",
.description = "Null channel (should not see this)",
.write = null_chan_write,
};
static void *do_notify(void *data)
{
struct ast_calendar_event *event = data;
struct ast_dial *dial = NULL;
struct ast_str *apptext = NULL, *tmpstr;
struct ast_datastore *datastore;
enum ast_dial_result res;
struct ast_channel *chan = NULL;
struct ast_variable *itervar;
char *tech, *dest;
char buf[8];
tech = ast_strdupa(event->owner->notify_channel);
if ((dest = strchr(tech, '/'))) {
*dest = '\0';
dest++;
} else {
ast_log(LOG_WARNING, "Channel should be in form Tech/Dest (was '%s')\n", tech);
goto notify_cleanup;
}
if (!(dial = ast_dial_create())) {
ast_log(LOG_ERROR, "Could not create dial structure\n");
goto notify_cleanup;
}
if (ast_dial_append(dial, tech, dest) < 0) {
ast_log(LOG_ERROR, "Could not append channel\n");
goto notify_cleanup;
}
ast_dial_set_global_timeout(dial, event->owner->notify_waittime);
generate_random_string(buf, sizeof(buf));
if (!(chan = ast_channel_alloc(1, AST_STATE_DOWN, 0, 0, 0, 0, 0, 0, 0, "Calendar/%s-%s", event->owner->name, buf))) {
ast_log(LOG_ERROR, "Could not allocate notification channel\n");
goto notify_cleanup;
}
chan->tech = &null_tech;
ast_format_set(&chan->writeformat, AST_FORMAT_SLINEAR, 0);
ast_format_set(&chan->readformat, AST_FORMAT_SLINEAR, 0);
ast_format_set(&chan->rawwriteformat, AST_FORMAT_SLINEAR, 0);
ast_format_set(&chan->rawreadformat, AST_FORMAT_SLINEAR, 0);
/* clear native formats and set to slinear. write format is signlear so just use that to set it */
ast_format_cap_set(chan->nativeformats, &chan->writeformat);
if (!(datastore = ast_datastore_alloc(&event_notification_datastore, NULL))) {
ast_log(LOG_ERROR, "Could not allocate datastore, notification not being sent!\n");
goto notify_cleanup;
}
datastore->data = event;
datastore->inheritance = DATASTORE_INHERIT_FOREVER;
ao2_ref(event, +1);
res = ast_channel_datastore_add(chan, datastore);
if (!(tmpstr = ast_str_create(32))) {
goto notify_cleanup;
}
for (itervar = event->owner->vars; itervar; itervar = itervar->next) {
ast_str_substitute_variables(&tmpstr, 0, chan, itervar->value);
pbx_builtin_setvar_helper(chan, itervar->name, tmpstr->str);
}
if (!(apptext = ast_str_create(32))) {
goto notify_cleanup;
}
if (!ast_strlen_zero(event->owner->notify_app)) {
ast_str_set(&apptext, 0, "%s,%s", event->owner->notify_app, event->owner->notify_appdata);
ast_dial_option_global_enable(dial, AST_DIAL_OPTION_ANSWER_EXEC, ast_str_buffer(apptext));
} else {
}
ast_verb(3, "Dialing %s for notification on calendar %s\n", event->owner->notify_channel, event->owner->name);
res = ast_dial_run(dial, chan, 0);
if (res != AST_DIAL_RESULT_ANSWERED) {
ast_verb(3, "Notification call for %s was not completed\n", event->owner->name);
} else {
struct ast_channel *answered;
answered = ast_dial_answered_steal(dial);
if (ast_strlen_zero(event->owner->notify_app)) {
ast_copy_string(answered->context, event->owner->notify_context, sizeof(answered->context));
ast_copy_string(answered->exten, event->owner->notify_extension, sizeof(answered->exten));
answered->priority = 1;
ast_pbx_run(answered);
}
}
notify_cleanup:
if (apptext) {
ast_free(apptext);
}
if (tmpstr) {
ast_free(tmpstr);
}
if (dial) {
ast_dial_destroy(dial);
}
if (chan) {
ast_channel_release(chan);
}
event = ast_calendar_unref_event(event);
return NULL;
}
static int calendar_event_notify(const void *data)
{
struct ast_calendar_event *event = (void *)data;
int res = -1;
pthread_t notify_thread = AST_PTHREADT_NULL;
if (!(event && event->owner)) {
ast_log(LOG_ERROR, "Extremely low-cal...in fact cal is NULL!\n");
return res;
}
ao2_ref(event, +1);
event->notify_sched = -1;
if (ast_pthread_create_background(&notify_thread, NULL, do_notify, event) < 0) {
ast_log(LOG_ERROR, "Could not create notification thread\n");
return res;
}
res = 0;
return res;
}
static int calendar_devstate_change(const void *data)
{
struct ast_calendar_event *event = (struct ast_calendar_event *)data;
struct timeval now = ast_tvnow();
int is_end_event;
if (!event) {
ast_log(LOG_WARNING, "Event was NULL!\n");
return 0;
}
ao2_ref(event, +1);
is_end_event = event->end <= now.tv_sec;
if (is_end_event) {
event->bs_end_sched = -1;
} else {
event->bs_start_sched = -1;
}
/* We can have overlapping events, so ignore the event->busy_state and check busy state
* based on all events in the calendar */
if (!calendar_is_busy(event->owner)) {
ast_devstate_changed(AST_DEVICE_NOT_INUSE, "Calendar:%s", event->owner->name);
} else {
ast_devstate_changed(AST_DEVICE_BUSY, "Calendar:%s", event->owner->name);
}
event = ast_calendar_unref_event(event);
return 0;
}
static void copy_event_data(struct ast_calendar_event *dst, struct ast_calendar_event *src)
{
struct ast_calendar_attendee *attendee;
ast_string_field_set(dst, summary, src->summary);
ast_string_field_set(dst, description, src->description);
ast_string_field_set(dst, organizer, src->organizer);
ast_string_field_set(dst, location, src->location);
ast_string_field_set(dst, uid, src->uid);
ast_string_field_set(dst, categories, src->categories);
dst->priority = src->priority;
dst->owner = src->owner;
dst->start = src->start;
dst->end = src->end;
dst->alarm = src->alarm;
dst->busy_state = src->busy_state;
/* Delete any existing attendees */
while ((attendee = AST_LIST_REMOVE_HEAD(&dst->attendees, next))) {
ast_free(attendee);
}
/* Copy over the new attendees */
while ((attendee = AST_LIST_REMOVE_HEAD(&src->attendees, next))) {
AST_LIST_INSERT_TAIL(&dst->attendees, attendee, next);
}
}
static int schedule_calendar_event(struct ast_calendar *cal, struct ast_calendar_event *old_event, struct ast_calendar_event *cmp_event)
{
struct timeval now = ast_tvnow();
struct ast_calendar_event *event;
time_t alarm_notify_sched = 0, devstate_sched_start, devstate_sched_end;
int changed = 0;
event = cmp_event ? cmp_event : old_event;
ao2_lock(event);
if (!cmp_event || old_event->alarm != event->alarm) {
changed = 1;
if (cal->autoreminder) {
alarm_notify_sched = (event->start - (60 * cal->autoreminder) - now.tv_sec) * 1000;
} else if (event->alarm) {
alarm_notify_sched = (event->alarm - now.tv_sec) * 1000;
}
/* For now, send the notification if we missed it, but the meeting hasn't happened yet */
if (event->start >= now.tv_sec) {
if (alarm_notify_sched <= 0) {
alarm_notify_sched = 1;
}
ast_mutex_lock(&refreshlock);
AST_SCHED_REPLACE(old_event->notify_sched, sched, alarm_notify_sched, calendar_event_notify, old_event);
ast_mutex_unlock(&refreshlock);
ast_debug(3, "Calendar alarm event notification scheduled to happen in %ld ms\n", (long) alarm_notify_sched);
}
}
if (!cmp_event || old_event->start != event->start) {
changed = 1;
devstate_sched_start = (event->start - now.tv_sec) * 1000;
if (devstate_sched_start < 1) {
devstate_sched_start = 1;
}
ast_mutex_lock(&refreshlock);
AST_SCHED_REPLACE(old_event->bs_start_sched, sched, devstate_sched_start, calendar_devstate_change, old_event);
ast_mutex_unlock(&refreshlock);
ast_debug(3, "Calendar bs_start event notification scheduled to happen in %ld ms\n", (long) devstate_sched_start);
}
if (!cmp_event || old_event->end != event->end) {
changed = 1;
devstate_sched_end = (event->end - now.tv_sec) * 1000;
ast_mutex_lock(&refreshlock);
AST_SCHED_REPLACE(old_event->bs_end_sched, sched, devstate_sched_end, calendar_devstate_change, old_event);
ast_mutex_unlock(&refreshlock);
ast_debug(3, "Calendar bs_end event notification scheduled to happen in %ld ms\n", (long) devstate_sched_end);
}
if (changed) {
ast_cond_signal(&refresh_condition);
}
ao2_unlock(event);
return 0;
}
static int merge_events_cb(void *obj, void *arg, int flags)
{
struct ast_calendar_event *old_event = obj, *new_event;
struct ao2_container *new_events = arg;
/* If we don't find the old_event in new_events, then we can safely delete the old_event */
if (!(new_event = find_event(new_events, old_event->uid))) {
old_event = destroy_event(old_event);
return CMP_MATCH;
}
/* We have events to merge. If any data that will affect a scheduler event has changed,
* then we need to replace the scheduler event */
schedule_calendar_event(old_event->owner, old_event, new_event);
/* Since we don't want to mess with cancelling sched events and adding new ones, just
* copy the internals of the new_event to the old_event */
copy_event_data(old_event, new_event);
/* Now we can go ahead and unlink the new_event from new_events and unref it so that only completely
* new events remain in the container */
ao2_unlink(new_events, new_event);
new_event = ast_calendar_unref_event(new_event);
return 0;
}
static int add_new_event_cb(void *obj, void *arg, int flags)
{
struct ast_calendar_event *new_event = obj;
struct ao2_container *events = arg;
ao2_link(events, new_event);
schedule_calendar_event(new_event->owner, new_event, NULL);
return CMP_MATCH;
}
void ast_calendar_merge_events(struct ast_calendar *cal, struct ao2_container *new_events)
{
/* Loop through all events attached to the calendar. If there is a matching new event
* merge its data over and handle any schedule changes that need to be made. Then remove
* the new_event from new_events so that we are left with only new_events that we can add later. */
ao2_callback(cal->events, OBJ_UNLINK | OBJ_NODATA | OBJ_MULTIPLE, merge_events_cb, new_events);
/* Now, we should only have completely new events in new_events. Loop through and add them */
ao2_callback(new_events, OBJ_UNLINK | OBJ_NODATA | OBJ_MULTIPLE, add_new_event_cb, cal->events);
}
static int load_config(void *data)
{
struct ast_flags config_flags = { CONFIG_FLAG_FILEUNCHANGED };
struct ast_config *tmpcfg;
if (!(tmpcfg = ast_config_load2("calendar.conf", "calendar", config_flags)) ||
tmpcfg == CONFIG_STATUS_FILEINVALID) {
ast_log(LOG_ERROR, "Unable to load config calendar.conf\n");
return -1;
}
if (tmpcfg == CONFIG_STATUS_FILEUNCHANGED) {
return 0;
}
ast_rwlock_wrlock(&config_lock);
if (calendar_config) {
ast_config_destroy(calendar_config);
}
calendar_config = tmpcfg;
ast_rwlock_unlock(&config_lock);
return 0;
}
/*! \brief A dialplan function that can be used to determine the busy status of a calendar */
static int calendar_busy_exec(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
{
struct ast_calendar *cal;
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "CALENDAR_BUSY requires an argument: CALENDAR_BUSY(<calendar_name>)\n");
return -1;
}
cal = find_calendar(data);
if (!cal) {
ast_log(LOG_WARNING, "Could not find calendar '%s'\n", data);
return -1;
}
strcpy(buf, calendar_is_busy(cal) ? "1" : "0");
return 0;
}
static struct ast_custom_function calendar_busy_function = {
.name = "CALENDAR_BUSY",
.read = calendar_busy_exec,
};
static int add_event_to_list(struct eventlist *events, struct ast_calendar_event *event, time_t start, time_t end)
{
struct evententry *entry, *iter;
int event_startdiff = abs(start - event->start);
int event_enddiff = abs(end - event->end);
int i = 0;
if (!(entry = ast_calloc(1, sizeof(*entry)))) {
ast_log(LOG_ERROR, "Unable to allocate memory for event list\n");
return -1;
}
entry->event = event;
ao2_ref(event, +1);
if (start == end) {
AST_LIST_TRAVERSE_SAFE_BEGIN(events, iter, list) {
int startdiff = abs(iter->event->start - start);
ast_debug(10, "Comparing %s with startdiff %d to %s with startdiff %d\n", event->summary, event_startdiff, iter->event->summary, startdiff);
++i;
if (startdiff > event_startdiff) {
AST_LIST_INSERT_BEFORE_CURRENT(entry, list);
return i;
}
if (startdiff == event_startdiff) {
int enddiff = abs(iter->event->end - end);
if (enddiff > event_enddiff) {
AST_LIST_INSERT_BEFORE_CURRENT(entry, list);
return i;
}
if (event_startdiff == enddiff) {
if (strcmp(event->uid, iter->event->uid) < 0) {
AST_LIST_INSERT_BEFORE_CURRENT(entry, list);
return i;
}
}
}
}
AST_LIST_TRAVERSE_SAFE_END;
AST_LIST_INSERT_TAIL(events, entry, list);
return i;
}
AST_LIST_TRAVERSE_SAFE_BEGIN(events, iter, list) {
++i;
if (iter->event->start > event->start) {
AST_LIST_INSERT_BEFORE_CURRENT(entry, list);
return i;
}
if (iter->event->start == event->start) {
if ((iter->event->end - iter->event->start) == (event->end - event->start)) {
if (strcmp(event->uid, iter->event->uid) < 0) {
AST_LIST_INSERT_BEFORE_CURRENT(entry, list);
return i;
}
}
if ((iter->event->end - iter->event->start) < (event->end - event->start)) {
AST_LIST_INSERT_BEFORE_CURRENT(entry, list);
return i;
}
}
}
AST_LIST_TRAVERSE_SAFE_END;
AST_LIST_INSERT_TAIL(events, entry, list);
return i;
}
static void eventlist_destroy(void *data)
{
struct eventlist *events = data;
ao2_ref(events, -1);
}
static void *eventlist_duplicate(void *data)
{
struct eventlist *events = data;
if (!events) {
return NULL;
}
ao2_ref(events, +1);
return events;
}
static int calendar_query_exec(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
{
struct ast_calendar *cal;
struct ao2_iterator i;
struct ast_calendar_event *event;
struct eventlist *events;
time_t start = INT_MIN, end = INT_MAX;
struct ast_datastore *eventlist_datastore;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(calendar);
AST_APP_ARG(start);
AST_APP_ARG(end);
);
if (!chan) {
ast_log(LOG_WARNING, "%s requires a channel to store the data on\n", cmd);
return -1;
}
AST_STANDARD_APP_ARGS(args, data);
if (ast_strlen_zero(args.calendar)) {
ast_log(LOG_WARNING, "%s requires a calendar argument\n", cmd);
return -1;
}
if (!(cal = find_calendar(args.calendar))) {
ast_log(LOG_WARNING, "Unknown calendar '%s'\n", args.calendar);
return -1;
}
if (!(events = ao2_alloc(sizeof(*events), eventlist_destructor))) {
ast_log(LOG_ERROR, "Unable to allocate memory for event list\n");
cal = unref_calendar(cal);
return -1;
}
if (!ast_strlen_zero(args.start)) {
start = atoi(args.start);
}
if (!ast_strlen_zero(args.end)) {
end = atoi(args.end);
}
i = ao2_iterator_init(cal->events, 0);
while ((event = ao2_iterator_next(&i))) {
if (!(start > event->end || end < event->start)) {
ast_debug(10, "%s (%ld - %ld) overlapped with (%ld - %ld)\n", event->summary, (long) event->start, (long) event->end, (long) start, (long) end);
if (add_event_to_list(events, event, start, end) < 0) {
event = ast_calendar_unref_event(event);
ao2_iterator_destroy(&i);
return -1;
}
}
event = ast_calendar_unref_event(event);
}
ao2_iterator_destroy(&i);
ast_channel_lock(chan);
do {
generate_random_string(buf, len);
} while (ast_channel_datastore_find(chan, &eventlist_datastore_info, buf));
ast_channel_unlock(chan);
if (!(eventlist_datastore = ast_datastore_alloc(&eventlist_datastore_info, buf))) {
ast_log(LOG_ERROR, "Could not allocate datastore!\n");
return -1;
}
eventlist_datastore->inheritance = DATASTORE_INHERIT_FOREVER;
eventlist_datastore->data = events;
ast_channel_lock(chan);
ast_channel_datastore_add(chan, eventlist_datastore);
ast_channel_unlock(chan);
return 0;
}
static struct ast_custom_function calendar_query_function = {
.name = "CALENDAR_QUERY",
.read = calendar_query_exec,
};
static void calendar_join_attendees(struct ast_calendar_event *event, char *buf, size_t len)
{
struct ast_str *tmp;
struct ast_calendar_attendee *attendee;
if (!(tmp = ast_str_create(32))) {
ast_log(LOG_ERROR, "Could not allocate memory for attendees!\n");
return;
}
AST_LIST_TRAVERSE(&event->attendees, attendee, next) {
ast_str_append(&tmp, 0, "%s%s", attendee == AST_LIST_FIRST(&event->attendees) ? "" : ",", attendee->data);
}
ast_copy_string(buf, ast_str_buffer(tmp), len);
ast_free(tmp);
}
static int calendar_query_result_exec(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
{
struct ast_datastore *datastore;
struct eventlist *events;
struct evententry *entry;
int row = 1;
size_t listlen = 0;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(id);
AST_APP_ARG(field);
AST_APP_ARG(row);
);
if (!chan) {
ast_log(LOG_WARNING, "%s requires a channel\n", cmd);
return -1;
}
AST_STANDARD_APP_ARGS(args, data);
if (ast_strlen_zero(args.id) || ast_strlen_zero(args.field)) {
ast_log(LOG_WARNING, "%s requires an id and a field", cmd);
return -1;
}
ast_channel_lock(chan);
if (!(datastore = ast_channel_datastore_find(chan, &eventlist_datastore_info, args.id))) {
ast_log(LOG_WARNING, "There is no event notification datastore with id '%s' on '%s'!\n", args.id, chan->name);
ast_channel_unlock(chan);
return -1;
}
ast_channel_unlock(chan);
if (!(events = datastore->data)) {
ast_log(LOG_WARNING, "The datastore contains no data!\n");
return -1;
}
if (!ast_strlen_zero(args.row)) {
row = atoi(args.row);
}
AST_LIST_TRAVERSE(events, entry, list) {
listlen++;
}
if (!strcasecmp(args.field, "getnum")) {
snprintf(buf, len, "%zu", listlen);
return 0;
}
AST_LIST_TRAVERSE(events, entry, list) {
if (--row) {
continue;
}
if (!strcasecmp(args.field, "summary")) {
ast_copy_string(buf, entry->event->summary, len);
} else if (!strcasecmp(args.field, "description")) {
ast_copy_string(buf, entry->event->description, len);
} else if (!strcasecmp(args.field, "organizer")) {
ast_copy_string(buf, entry->event->organizer, len);
} else if (!strcasecmp(args.field, "location")) {
ast_copy_string(buf, entry->event->location, len);
} else if (!strcasecmp(args.field, "categories")) {
ast_copy_string(buf, entry->event->categories, len);
} else if (!strcasecmp(args.field, "priority")) {
snprintf(buf, len, "%d", entry->event->priority);
} else if (!strcasecmp(args.field, "calendar")) {
ast_copy_string(buf, entry->event->owner->name, len);
} else if (!strcasecmp(args.field, "uid")) {
ast_copy_string(buf, entry->event->uid, len);
} else if (!strcasecmp(args.field, "start")) {
snprintf(buf, len, "%ld", (long) entry->event->start);
} else if (!strcasecmp(args.field, "end")) {
snprintf(buf, len, "%ld", (long) entry->event->end);
} else if (!strcasecmp(args.field, "busystate")) {
snprintf(buf, len, "%d", entry->event->busy_state);
} else if (!strcasecmp(args.field, "attendees")) {
calendar_join_attendees(entry->event, buf, len);
} else {
ast_log(LOG_WARNING, "Unknown field '%s'\n", args.field);
}
break;
}
return 0;
}
static struct ast_custom_function calendar_query_result_function = {
.name = "CALENDAR_QUERY_RESULT",
.read = calendar_query_result_exec,
};
static int calendar_write_exec(struct ast_channel *chan, const char *cmd, char *data, const char *value)
{
int i, j, ret = -1;
char *val_dup = NULL;
struct ast_calendar *cal = NULL;
struct ast_calendar_event *event = NULL;
struct timeval tv = ast_tvnow();
AST_DECLARE_APP_ARGS(fields,
AST_APP_ARG(field)[10];
);
AST_DECLARE_APP_ARGS(values,
AST_APP_ARG(value)[10];
);
if (!(val_dup = ast_strdup(value))) {
ast_log(LOG_ERROR, "Could not allocate memory for values\n");
return -1;
}
AST_STANDARD_APP_ARGS(fields, data);
AST_STANDARD_APP_ARGS(values, val_dup);
/* XXX Eventually we will support unnamed calendars, so if we don't find one, we parse
* for a calendar type and create it */
if (!(cal = find_calendar(fields.field[0]))) {
ast_log(LOG_WARNING, "Couldn't find calendar '%s'\n", fields.field[0]);
goto write_cleanup;
}
if (!(cal->tech->write_event)) {
ast_log(LOG_WARNING, "Calendar '%s' has no write function!\n", cal->name);
goto write_cleanup;
}
if (!(event = ast_calendar_event_alloc(cal))) {
goto write_cleanup;
}
if (ast_strlen_zero(fields.field[0])) {
ast_log(LOG_WARNING, "CALENDAR_WRITE requires a calendar name!\n");
goto write_cleanup;
}
if (fields.argc - 1 != values.argc) {
ast_log(LOG_WARNING, "CALENDAR_WRITE should have the same number of fields (%d) and values (%d)!\n", fields.argc - 1, values.argc);
goto write_cleanup;
}
event->owner = cal;
for (i = 1, j = 0; i < fields.argc; i++, j++) {
if (!strcasecmp(fields.field[i], "summary")) {
ast_string_field_set(event, summary, values.value[j]);
} else if (!strcasecmp(fields.field[i], "description")) {
ast_string_field_set(event, description, values.value[j]);
} else if (!strcasecmp(fields.field[i], "organizer")) {
ast_string_field_set(event, organizer, values.value[j]);
} else if (!strcasecmp(fields.field[i], "location")) {
ast_string_field_set(event, location, values.value[j]);
} else if (!strcasecmp(fields.field[i], "categories")) {
ast_string_field_set(event, categories, values.value[j]);
} else if (!strcasecmp(fields.field[i], "priority")) {
event->priority = atoi(values.value[j]);
} else if (!strcasecmp(fields.field[i], "uid")) {
ast_string_field_set(event, uid, values.value[j]);
} else if (!strcasecmp(fields.field[i], "start")) {
event->start = atoi(values.value[j]);
} else if (!strcasecmp(fields.field[i], "end")) {
event->end = atoi(values.value[j]);
} else if (!strcasecmp(fields.field[i], "busystate")) {
event->busy_state = atoi(values.value[j]);
} else {
ast_log(LOG_WARNING, "Unknown calendar event field '%s'\n", fields.field[i]);
}
}
if (!event->start) {
event->start = tv.tv_sec;
}
if (!event->end) {
event->end = tv.tv_sec;
}
if((ret = cal->tech->write_event(event))) {
ast_log(LOG_WARNING, "Writing event to calendar '%s' failed!\n", cal->name);
}
write_cleanup:
if (cal) {
cal = unref_calendar(cal);
}
if (event) {
event = ast_calendar_unref_event(event);
}
if (val_dup) {
ast_free(val_dup);
}
return ret;
}
static struct ast_custom_function calendar_write_function = {
.name = "CALENDAR_WRITE",
.write = calendar_write_exec,
};
/*! \brief CLI command to list available calendars */
static char *handle_show_calendars(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
#define FORMAT "%-20.20s %-10.10s %-6.6s\n"
struct ao2_iterator i;
struct ast_calendar *cal;
switch(cmd) {
case CLI_INIT:
e->command = "calendar show calendars";
e->usage =
"Usage: calendar show calendars\n"
" Lists all registered calendars.\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
ast_cli(a->fd, FORMAT, "Calendar", "Type", "Status");
ast_cli(a->fd, FORMAT, "--------", "----", "------");
i = ao2_iterator_init(calendars, 0);
while ((cal = ao2_iterator_next(&i))) {
ast_cli(a->fd, FORMAT, cal->name, cal->tech->type, calendar_is_busy(cal) ? "busy" : "free");
cal = unref_calendar(cal);
}
ao2_iterator_destroy(&i);
return CLI_SUCCESS;
#undef FORMAT
}
/*! \brief CLI command to list of all calendars types currently loaded on the backend */
static char *handle_show_calendars_types(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
#define FORMAT "%-10.10s %-30.30s\n"
struct ast_calendar_tech *iter;
switch(cmd) {
case CLI_INIT:
e->command = "calendar show types";
e->usage =
"Usage: calendar show types\n"
" Lists all registered calendars types.\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
ast_cli(a->fd, FORMAT, "Type", "Description");
AST_LIST_LOCK(&techs);
AST_LIST_TRAVERSE(&techs, iter, list) {
ast_cli(a->fd, FORMAT, iter->type, iter->description);
}
AST_LIST_UNLOCK(&techs);
return CLI_SUCCESS;
#undef FORMAT
}
static char *epoch_to_string(char *buf, size_t buflen, time_t epoch)
{
struct ast_tm tm;
struct timeval tv = {
.tv_sec = epoch,
};
if (!epoch) {
*buf = '\0';
return buf;
}
ast_localtime(&tv, &tm, NULL);
ast_strftime(buf, buflen, "%F %r %z", &tm);
return buf;
}
static char *handle_show_calendar(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
#define FORMAT "%-17.17s : %-20.20s\n"
#define FORMAT2 "%-12.12s: %-40.60s\n"
struct ao2_iterator i;
struct ast_calendar *cal;
struct ast_calendar_event *event;
int which = 0;
char *ret = NULL;
switch(cmd) {
case CLI_INIT:
e->command = "calendar show calendar";
e->usage =
"Usage: calendar show calendar <calendar name>\n"
" Displays information about a calendar\n";
return NULL;
case CLI_GENERATE:
if (a->pos != 3) {
return NULL;
}
i = ao2_iterator_init(calendars, 0);
while ((cal = ao2_iterator_next(&i))) {
if (!strncasecmp(a->word, cal->name, strlen(a->word)) && ++which > a->n) {
ret = ast_strdup(cal->name);
cal = unref_calendar(cal);
break;
}
cal = unref_calendar(cal);
}
ao2_iterator_destroy(&i);
return ret;
}
if (a->argc != 4) {
return CLI_SHOWUSAGE;
}
if (!(cal = find_calendar(a->argv[3]))) {
return NULL;
}
ast_cli(a->fd, FORMAT, "Name", cal->name);
ast_cli(a->fd, FORMAT, "Notify channel", cal->notify_channel);
ast_cli(a->fd, FORMAT, "Notify context", cal->notify_context);
ast_cli(a->fd, FORMAT, "Notify extension", cal->notify_extension);
ast_cli(a->fd, FORMAT, "Notify application", cal->notify_app);
ast_cli(a->fd, FORMAT, "Notify appdata", cal->notify_appdata);
ast_cli(a->fd, "%-17.17s : %d\n", "Refresh time", cal->refresh);
ast_cli(a->fd, "%-17.17s : %d\n", "Timeframe", cal->timeframe);
ast_cli(a->fd, "%-17.17s : %d\n", "Autoreminder", cal->autoreminder);
ast_cli(a->fd, "%s\n", "Events");
ast_cli(a->fd, "%s\n", "------");
i = ao2_iterator_init(cal->events, 0);
while ((event = ao2_iterator_next(&i))) {
char buf[100];
ast_cli(a->fd, FORMAT2, "Summary", event->summary);
ast_cli(a->fd, FORMAT2, "Description", event->description);
ast_cli(a->fd, FORMAT2, "Organizer", event->organizer);
ast_cli(a->fd, FORMAT2, "Location", event->location);
ast_cli(a->fd, FORMAT2, "Categories", event->categories);
ast_cli(a->fd, "%-12.12s: %d\n", "Priority", event->priority);
ast_cli(a->fd, FORMAT2, "UID", event->uid);
ast_cli(a->fd, FORMAT2, "Start", epoch_to_string(buf, sizeof(buf), event->start));
ast_cli(a->fd, FORMAT2, "End", epoch_to_string(buf, sizeof(buf), event->end));
ast_cli(a->fd, FORMAT2, "Alarm", epoch_to_string(buf, sizeof(buf), event->alarm));
ast_cli(a->fd, "\n");
event = ast_calendar_unref_event(event);
}
ao2_iterator_destroy(&i);
cal = unref_calendar(cal);
return CLI_SUCCESS;
#undef FORMAT
#undef FORMAT2
}
static char *handle_dump_sched(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
switch(cmd) {
case CLI_INIT:
e->command = "calendar dump sched";
e->usage =
"Usage: calendar dump sched\n"
" Dump the calendar sched context";
return NULL;
case CLI_GENERATE:
return NULL;
}
ast_sched_dump(sched);
return CLI_SUCCESS;
}
static struct ast_cli_entry calendar_cli[] = {
AST_CLI_DEFINE(handle_show_calendar, "Display information about a calendar"),
AST_CLI_DEFINE(handle_show_calendars, "Show registered calendars"),
AST_CLI_DEFINE(handle_dump_sched, "Dump calendar sched context"),
AST_CLI_DEFINE(handle_show_calendars_types, "Show all calendar types loaded"),
};
static int calendar_event_read(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
{
struct ast_datastore *datastore;
struct ast_calendar_event *event;
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "%s requires an argument\n", cmd);
return -1;
}
ast_channel_lock(chan);
if (!(datastore = ast_channel_datastore_find(chan, &event_notification_datastore, NULL))) {
ast_log(LOG_WARNING, "There is no event notification datastore on '%s'!\n", chan->name);
ast_channel_unlock(chan);
return -1;
}
ast_channel_unlock(chan);
if (!(event = datastore->data)) {
ast_log(LOG_WARNING, "The datastore contains no data!\n");
return -1;
}
if (!strcasecmp(data, "summary")) {
ast_copy_string(buf, event->summary, len);
} else if (!strcasecmp(data, "description")) {
ast_copy_string(buf, event->description, len);
} else if (!strcasecmp(data, "organizer")) {
ast_copy_string(buf, event->organizer, len);
} else if (!strcasecmp(data, "location")) {
ast_copy_string(buf, event->location, len);
} else if (!strcasecmp(data, "categories")) {
ast_copy_string(buf, event->categories, len);
} else if (!strcasecmp(data, "priority")) {
snprintf(buf, len, "%d", event->priority);
} else if (!strcasecmp(data, "calendar")) {
ast_copy_string(buf, event->owner->name, len);
} else if (!strcasecmp(data, "uid")) {
ast_copy_string(buf, event->uid, len);
} else if (!strcasecmp(data, "start")) {
snprintf(buf, len, "%ld", (long)event->start);
} else if (!strcasecmp(data, "end")) {
snprintf(buf, len, "%ld", (long)event->end);
} else if (!strcasecmp(data, "busystate")) {
snprintf(buf, len, "%d", event->busy_state);
} else if (!strcasecmp(data, "attendees")) {
calendar_join_attendees(event, buf, len);
}
return 0;
}
static struct ast_custom_function calendar_event_function = {
.name = "CALENDAR_EVENT",
.read = calendar_event_read,
};
static int cb_pending_deletion(void *user_data, void *arg, int flags)
{
struct ast_calendar *cal = user_data;
cal->pending_deletion = 1;
return CMP_MATCH;
}
static int cb_rm_pending_deletion(void *user_data, void *arg, int flags)
{
struct ast_calendar *cal = user_data;
return cal->pending_deletion ? CMP_MATCH : 0;
}
static int reload(void)
{
struct ast_calendar_tech *iter;
ast_mutex_lock(&reloadlock);
/* Mark existing calendars for deletion */
ao2_callback(calendars, OBJ_NODATA | OBJ_MULTIPLE, cb_pending_deletion, NULL);
load_config(NULL);
AST_LIST_LOCK(&techs);
AST_LIST_TRAVERSE(&techs, iter, list) {
if (load_tech_calendars(iter)) {
ast_log(LOG_WARNING, "Failed to reload %s calendars, module disabled\n", iter->type);
}
}
AST_LIST_UNLOCK(&techs);
/* Delete calendars that no longer show up in the config */
ao2_callback(calendars, OBJ_UNLINK | OBJ_NODATA | OBJ_MULTIPLE, cb_rm_pending_deletion, NULL);
ast_mutex_unlock(&reloadlock);
return 0;
}
static void *do_refresh(void *data)
{
for (;;) {
struct timeval now = ast_tvnow();
struct timespec ts = {0,};
int wait;
ast_mutex_lock(&refreshlock);
if ((wait = ast_sched_wait(sched)) < 0) {
wait = 1000;
}
ts.tv_sec = (now.tv_sec + wait / 1000) + 1;
ast_cond_timedwait(&refresh_condition, &refreshlock, &ts);
ast_mutex_unlock(&refreshlock);
ast_sched_runq(sched);
}
return NULL;
}
/* If I were to allow unloading it would look something like this */
static int unload_module(void)
{
struct ast_calendar_tech *tech;
ast_devstate_prov_del("calendar");
ast_custom_function_unregister(&calendar_busy_function);
ast_custom_function_unregister(&calendar_event_function);
ast_custom_function_unregister(&calendar_query_function);
ast_custom_function_unregister(&calendar_query_result_function);
ast_custom_function_unregister(&calendar_write_function);
ast_cli_unregister_multiple(calendar_cli, ARRAY_LEN(calendar_cli));
/* Remove all calendars */
ao2_callback(calendars, OBJ_UNLINK | OBJ_NODATA | OBJ_MULTIPLE, NULL, NULL);
AST_LIST_LOCK(&techs);
AST_LIST_TRAVERSE(&techs, tech, list) {
ast_unload_resource(tech->module, 0);
}
AST_LIST_UNLOCK(&techs);
return 0;
}
static int load_module(void)
{
if (!(calendars = ao2_container_alloc(CALENDAR_BUCKETS, calendar_hash_fn, calendar_cmp_fn))) {
ast_log(LOG_ERROR, "Unable to allocate calendars container!\n");
return AST_MODULE_LOAD_FAILURE;
}
if (load_config(NULL)) {
/* We don't have calendar support enabled */
return AST_MODULE_LOAD_DECLINE;
}
ast_mutex_init(&refreshlock);
ast_cond_init(&refresh_condition, NULL);
ast_mutex_init(&reloadlock);
if (!(sched = ast_sched_context_create())) {
ast_log(LOG_ERROR, "Unable to create sched context\n");
return AST_MODULE_LOAD_FAILURE;
}
if (ast_pthread_create_background(&refresh_thread, NULL, do_refresh, NULL) < 0) {
ast_log(LOG_ERROR, "Unable to start refresh thread--notifications disabled!\n");
}
ast_custom_function_register(&calendar_busy_function);
ast_custom_function_register(&calendar_event_function);
ast_custom_function_register(&calendar_query_function);
ast_custom_function_register(&calendar_query_result_function);
ast_custom_function_register(&calendar_write_function);
ast_cli_register_multiple(calendar_cli, ARRAY_LEN(calendar_cli));
ast_devstate_prov_add("Calendar", calendarstate);
/* Since other modules depend on this, disable unloading */
ast_module_ref(ast_module_info->self);
return AST_MODULE_LOAD_SUCCESS;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_GLOBAL_SYMBOLS | AST_MODFLAG_LOAD_ORDER, "Asterisk Calendar integration",
.load = load_module,
.unload = unload_module,
.reload = reload,
.load_pri = AST_MODPRI_DEVSTATE_PROVIDER,
);
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