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res_calendar.c
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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2008 - 2009, Digium, Inc.
*
* Terry Wilson <[email protected]>
*
* 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
*/
/*! \li \ref res_calendar.c uses the configuration file \ref calendar.conf
* \addtogroup configuration_file Configuration Files
*/
/*!
* \page calendar.conf calendar.conf
* \verbinclude calendar.conf.sample
*/
/*** MODULEINFO
<support_level>extended</support_level>
***/
#include "asterisk.h"
#include "asterisk/_private.h"
#include "asterisk/channel.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"
#include "asterisk/format_cache.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>
<variablelist>
<variable name="CALENDAR_SUCCESS">
<para>The status of the write operation to the calendar</para>
<value name="1" >
The event was successfully written to the calendar.
</value>
<value name="0" >
The event was not written to the calendar due to network issues, permissions, etc.
</value>
</variable>
</variablelist>
</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 int module_unloading;
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);
ast_variables_destroy(cal->vars);
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)
{
enum ast_device_state state;
struct ast_calendar *cal;
if (ast_strlen_zero(data) || (!(cal = find_calendar(data)))) {
return AST_DEVICE_INVALID;
}
if (cal->tech->is_busy) {
state = cal->tech->is_busy(cal) ? AST_DEVICE_INUSE : AST_DEVICE_NOT_INUSE;
} else {
state = calendar_is_busy(cal) ? AST_DEVICE_INUSE : AST_DEVICE_NOT_INUSE;
}
cal = unref_calendar(cal);
return state;
}
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;
cal = find_calendar(cat);
if (cal && cal->fetch_again_at_reload) {
/** Create new calendar, old will be removed during reload */
cal = unref_calendar(cal);
}
if (!cal) {
new_calendar = 1;
if (!(cal = ao2_alloc(sizeof(*cal), calendar_destructor))) {
ast_log(LOG_ERROR, "Could not allocate calendar structure. Stopping.\n");
return NULL;
}
cal->events = ao2_container_alloc_hash(AO2_ALLOC_OPT_LOCK_MUTEX, 0,
CALENDAR_BUCKETS, event_hash_fn, NULL, event_cmp_fn);
if (!cal->events) {
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;
cal->fetch_again_at_reload = 0;
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, "fetch_again_at_reload")) {
cal->fetch_again_at_reload = ast_true(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 (cal->autoreminder && ast_strlen_zero(cal->notify_channel)) {
ast_log(LOG_WARNING,
"You have set 'autoreminder' but not 'channel' for calendar '%s.' "
"Notifications will not occur.\n",
cal->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;
if (!calendar_config) {
ast_log(LOG_WARNING, "Calendar support disabled, not loading %s calendar module\n", tech->type);
return -1;
}
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);
tech->user = ast_module_user_add(NULL);
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_module_user_remove(iter->user);
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, AST_DEVSTATE_CACHABLE, "Calendar:%s", event->owner->name);
} else {
ast_devstate_changed(AST_DEVICE_BUSY, AST_DEVSTATE_CACHABLE, "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_hash(AO2_ALLOC_OPT_LOCK_MUTEX, 0, CALENDAR_BUCKETS,
event_hash_fn, NULL, 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)
{
unsigned 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 = NULL;
struct ast_datastore *datastore;
enum ast_dial_result res;
struct ast_channel *chan = NULL;
struct ast_variable *itervar;
char *tech, *dest;
char buf[33];
struct ast_format_cap *caps;
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, NULL) < 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, NULL, NULL, 0, "Calendar/%s-%s", event->owner->name, buf))) {
ast_log(LOG_ERROR, "Could not allocate notification channel\n");
goto notify_cleanup;
}
ast_channel_tech_set(chan, &null_tech);
ast_channel_set_writeformat(chan, ast_format_slin);
ast_channel_set_readformat(chan, ast_format_slin);
ast_channel_set_rawwriteformat(chan, ast_format_slin);
ast_channel_set_rawreadformat(chan, ast_format_slin);
caps = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
if (!caps) {
ast_log(LOG_ERROR, "Could not allocate capabilities, notification not being sent!\n");
goto notify_cleanup;
}
ast_format_cap_append(caps, ast_format_slin, 0);
ast_channel_nativeformats_set(chan, caps);
ao2_ref(caps, -1);
ast_channel_unlock(chan);
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);
ast_channel_lock(chan);
res = ast_channel_datastore_add(chan, datastore);
ast_channel_unlock(chan);
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, ast_str_buffer(tmpstr));
}
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_channel_context_set(answered, event->owner->notify_context);
ast_channel_exten_set(answered, event->owner->notify_extension);
ast_channel_priority_set(answered, 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(¬ify_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, AST_DEVSTATE_CACHABLE, "Calendar:%s", event->owner->name);
} else {
ast_devstate_changed(AST_DEVICE_BUSY, AST_DEVSTATE_CACHABLE, "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 (!ast_strlen_zero(cal->notify_channel) && (!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;