I changed this code earlier to return NULL if it wasn't able to generate a UUID, whereas the earlier code would always return the ast_str that was passed in. Switch back to returning the ast_str, only set it to the empty string instead if UUID generation fails. We still do a validity check later which will catch this and blow up if necessary. git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@378000 65c4cc65-6c06-0410-ace0-fbb531ad65f3
762 lines
20 KiB
C
762 lines
20 KiB
C
/*
|
|
* 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 Resource for handling MS Exchange calendars
|
|
*/
|
|
|
|
/*** MODULEINFO
|
|
<depend>neon</depend>
|
|
<depend>ical</depend>
|
|
<depend>iksemel</depend>
|
|
<support_level>core</support_level>
|
|
***/
|
|
|
|
#include "asterisk.h"
|
|
|
|
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
|
|
|
|
#include <libical/ical.h>
|
|
#include <ne_session.h>
|
|
#include <ne_uri.h>
|
|
#include <ne_request.h>
|
|
#include <ne_auth.h>
|
|
#include <ne_redirect.h>
|
|
#include <iksemel.h>
|
|
|
|
#include "asterisk/module.h"
|
|
#include "asterisk/calendar.h"
|
|
#include "asterisk/lock.h"
|
|
#include "asterisk/config.h"
|
|
#include "asterisk/astobj2.h"
|
|
#include "asterisk/uuid.h"
|
|
|
|
static void *exchangecal_load_calendar(void *data);
|
|
static void *unref_exchangecal(void *obj);
|
|
static int exchangecal_write_event(struct ast_calendar_event *event);
|
|
|
|
static struct ast_calendar_tech exchangecal_tech = {
|
|
.type = "exchange",
|
|
.description = "MS Exchange calendars",
|
|
.module = AST_MODULE,
|
|
.load_calendar = exchangecal_load_calendar,
|
|
.unref_calendar = unref_exchangecal,
|
|
.write_event = exchangecal_write_event,
|
|
};
|
|
|
|
struct exchangecal_pvt {
|
|
AST_DECLARE_STRING_FIELDS(
|
|
AST_STRING_FIELD(url);
|
|
AST_STRING_FIELD(user);
|
|
AST_STRING_FIELD(secret);
|
|
);
|
|
struct ast_calendar *owner;
|
|
ne_uri uri;
|
|
ne_session *session;
|
|
struct ao2_container *events;
|
|
};
|
|
|
|
struct xmlstate {
|
|
char tag[80];
|
|
int in_response;
|
|
int in_propstat;
|
|
int in_prop;
|
|
void *ptr;
|
|
struct exchangecal_pvt *pvt;
|
|
};
|
|
|
|
static int parse_tag(void *data, char *name, char **atts, int type)
|
|
{
|
|
struct xmlstate *state = data;
|
|
char *tmp;
|
|
|
|
if ((tmp = strchr(name, ':'))) {
|
|
tmp++;
|
|
} else {
|
|
return IKS_HOOK;
|
|
}
|
|
|
|
ast_copy_string(state->tag, tmp, sizeof(state->tag));
|
|
|
|
switch (type) {
|
|
case IKS_OPEN:
|
|
if (!strcasecmp(state->tag, "response")) {
|
|
struct ast_calendar_event *event;
|
|
|
|
state->in_response = 1;
|
|
if (!(event = ast_calendar_event_alloc(state->pvt->owner))) {
|
|
return IKS_NOMEM;
|
|
}
|
|
state->ptr = event;
|
|
} else if (!strcasecmp(state->tag, "propstat")) {
|
|
state->in_propstat = 1;
|
|
} else if (!strcasecmp(state->tag, "prop")) {
|
|
state->in_prop = 1;
|
|
}
|
|
break;
|
|
|
|
case IKS_CLOSE:
|
|
if (!strcasecmp(state->tag, "response")) {
|
|
struct ao2_container *events = state->pvt->events;
|
|
struct ast_calendar_event *event = state->ptr;
|
|
|
|
state->in_response = 0;
|
|
if (ast_strlen_zero(event->uid)) {
|
|
ast_log(LOG_ERROR, "This event has no UID, something has gone wrong\n");
|
|
event = ast_calendar_unref_event(event);
|
|
return IKS_HOOK;
|
|
}
|
|
ao2_link(events, event);
|
|
event = ast_calendar_unref_event(event);
|
|
} else if (!strcasecmp(state->tag, "propstat")) {
|
|
state->in_propstat = 0;
|
|
} else if (!strcasecmp(state->tag, "prop")) {
|
|
state->in_prop = 0;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return IKS_OK;
|
|
}
|
|
|
|
return IKS_OK;
|
|
}
|
|
|
|
static time_t mstime_to_time_t(char *mstime)
|
|
{
|
|
char *read, *write;
|
|
icaltimetype tt;
|
|
for (read = write = mstime; *read; read++) {
|
|
if (*read == '.') {
|
|
*write++ = 'Z';
|
|
*write = '\0';
|
|
break;
|
|
}
|
|
if (*read == '-' || *read == ':')
|
|
continue;
|
|
*write = *read;
|
|
write++;
|
|
}
|
|
|
|
tt = icaltime_from_string(mstime);
|
|
return icaltime_as_timet(tt);
|
|
}
|
|
|
|
static enum ast_calendar_busy_state msbusy_to_bs(const char *msbusy)
|
|
{
|
|
if (!strcasecmp(msbusy, "FREE")) {
|
|
return AST_CALENDAR_BS_FREE;
|
|
} else if (!strcasecmp(msbusy, "TENTATIVE")) {
|
|
return AST_CALENDAR_BS_BUSY_TENTATIVE;
|
|
} else {
|
|
return AST_CALENDAR_BS_BUSY;
|
|
}
|
|
}
|
|
|
|
static int parse_cdata(void *data, char *value, size_t len)
|
|
{
|
|
char *str;
|
|
struct xmlstate *state = data;
|
|
struct ast_calendar_event *event = state->ptr;
|
|
|
|
|
|
str = ast_skip_blanks(value);
|
|
|
|
if (str == value + len)
|
|
return IKS_OK;
|
|
|
|
if (!(str = ast_calloc(1, len + 1))) {
|
|
return IKS_NOMEM;
|
|
}
|
|
memcpy(str, value, len);
|
|
if (!(state->in_response && state->in_propstat && state->in_prop)) {
|
|
ast_free(str);
|
|
return IKS_OK;
|
|
}
|
|
/* We use ast_string_field_build here because libiksemel is parsing CDATA with < as
|
|
* new elements which is a bit odd and shouldn't happen */
|
|
if (!strcasecmp(state->tag, "subject")) {
|
|
ast_string_field_build(event, summary, "%s%s", event->summary, str);
|
|
} else if (!strcasecmp(state->tag, "location")) {
|
|
ast_string_field_build(event, location, "%s%s", event->location, str);
|
|
} else if (!strcasecmp(state->tag, "uid")) {
|
|
ast_string_field_build(event, uid, "%s%s", event->location, str);
|
|
} else if (!strcasecmp(state->tag, "organizer")) {
|
|
ast_string_field_build(event, organizer, "%s%s", event->organizer, str);
|
|
} else if (!strcasecmp(state->tag, "textdescription")) {
|
|
ast_string_field_build(event, description, "%s%s", event->description, str);
|
|
} else if (!strcasecmp(state->tag, "dtstart")) {
|
|
event->start = mstime_to_time_t(str);
|
|
} else if (!strcasecmp(state->tag, "dtend")) {
|
|
event->end = mstime_to_time_t(str);
|
|
} else if (!strcasecmp(state->tag, "busystatus")) {
|
|
event->busy_state = msbusy_to_bs(str);
|
|
} else if (!strcasecmp(state->tag, "reminderoffset")) {
|
|
/*XXX Currently we rely on event->start being set first which means we rely on the response order
|
|
* which technically should be fine since the query returns in the order we ask for, but ... */
|
|
event->alarm = event->start - atoi(str);
|
|
}
|
|
|
|
ast_free(str);
|
|
return IKS_OK;
|
|
}
|
|
|
|
static void exchangecal_destructor(void *obj)
|
|
{
|
|
struct exchangecal_pvt *pvt = obj;
|
|
|
|
ast_debug(1, "Destroying pvt for Exchange calendar %s\n", pvt->owner->name);
|
|
if (pvt->session) {
|
|
ne_session_destroy(pvt->session);
|
|
}
|
|
ast_string_field_free_memory(pvt);
|
|
|
|
ao2_callback(pvt->events, OBJ_UNLINK | OBJ_NODATA | OBJ_MULTIPLE, NULL, NULL);
|
|
|
|
ao2_ref(pvt->events, -1);
|
|
}
|
|
|
|
static void *unref_exchangecal(void *obj)
|
|
{
|
|
struct exchangecal_pvt *pvt = obj;
|
|
|
|
ao2_ref(pvt, -1);
|
|
return NULL;
|
|
}
|
|
|
|
/* It is very important to use the return value of this function as a realloc could occur */
|
|
static struct ast_str *generate_exchange_uuid(struct ast_str *uid)
|
|
{
|
|
char buffer[AST_UUID_STR_LEN];
|
|
struct ast_uuid *uuid = ast_uuid_generate();
|
|
|
|
if (!uuid) {
|
|
ast_str_set(&uid, 0, "%s", "");
|
|
return uid;
|
|
}
|
|
|
|
ast_str_set(&uid, 0, "%s", ast_uuid_to_str(uuid, buffer, AST_UUID_STR_LEN));
|
|
|
|
ast_free(uuid);
|
|
|
|
return uid;
|
|
}
|
|
|
|
static int is_valid_uuid(struct ast_str *uid)
|
|
{
|
|
struct ast_uuid *uuid = ast_str_to_uuid(ast_str_buffer(uid));
|
|
|
|
if (uuid) {
|
|
ast_free(uuid);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct ast_str *xml_encode_str(struct ast_str *dst, const char *src)
|
|
{
|
|
const char *tmp;
|
|
char buf[7];
|
|
|
|
for (tmp = src; *tmp; tmp++) {
|
|
switch (*tmp) {
|
|
case '\"':
|
|
strcpy(buf, """);
|
|
break;
|
|
|
|
case '\'':
|
|
strcpy(buf, "'");
|
|
break;
|
|
|
|
case '&':
|
|
strcpy(buf, "&");
|
|
break;
|
|
|
|
case '<':
|
|
strcpy(buf, "<");
|
|
break;
|
|
|
|
case '>':
|
|
strcpy(buf, ">");
|
|
break;
|
|
|
|
default:
|
|
sprintf(buf, "%c", *tmp);
|
|
}
|
|
|
|
ast_str_append(&dst, 0, "%s", buf);
|
|
}
|
|
|
|
return dst;
|
|
}
|
|
|
|
static struct ast_str *epoch_to_exchange_time(struct ast_str *dst, time_t epoch)
|
|
{
|
|
icaltimezone *utc = icaltimezone_get_utc_timezone();
|
|
icaltimetype tt = icaltime_from_timet_with_zone(epoch, 0, utc);
|
|
char tmp[30];
|
|
int i;
|
|
|
|
ast_copy_string(tmp, icaltime_as_ical_string(tt), sizeof(tmp));
|
|
for (i = 0; tmp[i]; i++) {
|
|
ast_str_append(&dst, 0, "%c", tmp[i]);
|
|
if (i == 3 || i == 5)
|
|
ast_str_append(&dst, 0, "%c", '-');
|
|
if (i == 10 || i == 12)
|
|
ast_str_append(&dst, 0, "%c", ':');
|
|
if (i == 14)
|
|
ast_str_append(&dst, 0, "%s", ".000");
|
|
}
|
|
|
|
return dst;
|
|
}
|
|
|
|
static struct ast_str *bs_to_exchange_bs(struct ast_str *dst, enum ast_calendar_busy_state bs)
|
|
{
|
|
switch (bs) {
|
|
case AST_CALENDAR_BS_BUSY:
|
|
ast_str_set(&dst, 0, "%s", "BUSY");
|
|
break;
|
|
|
|
case AST_CALENDAR_BS_BUSY_TENTATIVE:
|
|
ast_str_set(&dst, 0, "%s", "TENTATIVE");
|
|
break;
|
|
|
|
default:
|
|
ast_str_set(&dst, 0, "%s", "FREE");
|
|
}
|
|
|
|
return dst;
|
|
}
|
|
|
|
static int fetch_response_reader(void *data, const char *block, size_t len)
|
|
{
|
|
struct ast_str **response = data;
|
|
unsigned char *tmp;
|
|
|
|
if (!(tmp = ast_malloc(len + 1))) {
|
|
return -1;
|
|
}
|
|
memcpy(tmp, block, len);
|
|
tmp[len] = '\0';
|
|
ast_str_append(response, 0, "%s", tmp);
|
|
ast_free(tmp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int auth_credentials(void *userdata, const char *realm, int attempts, char *username, char *secret)
|
|
{
|
|
struct exchangecal_pvt *pvt = userdata;
|
|
|
|
if (attempts > 1) {
|
|
ast_log(LOG_WARNING, "Invalid username or password for Exchange calendar '%s'\n", pvt->owner->name);
|
|
return -1;
|
|
}
|
|
|
|
ne_strnzcpy(username, pvt->user, NE_ABUFSIZ);
|
|
ne_strnzcpy(secret, pvt->secret, NE_ABUFSIZ);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct ast_str *exchangecal_request(struct exchangecal_pvt *pvt, const char *method, struct ast_str *req_body, struct ast_str *subdir)
|
|
{
|
|
struct ast_str *response;
|
|
ne_request *req;
|
|
int ret;
|
|
char buf[1000];
|
|
|
|
if (!pvt) {
|
|
ast_log(LOG_ERROR, "There is no private!\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (!(response = ast_str_create(512))) {
|
|
ast_log(LOG_ERROR, "Could not allocate memory for response.\n");
|
|
return NULL;
|
|
}
|
|
|
|
snprintf(buf, sizeof(buf), "%s%s", pvt->uri.path, subdir ? ast_str_buffer(subdir) : "");
|
|
|
|
req = ne_request_create(pvt->session, method, buf);
|
|
ne_add_response_body_reader(req, ne_accept_2xx, fetch_response_reader, &response);
|
|
ne_set_request_body_buffer(req, ast_str_buffer(req_body), ast_str_strlen(req_body));
|
|
ne_add_request_header(req, "Content-type", "text/xml");
|
|
|
|
ret = ne_request_dispatch(req);
|
|
ne_request_destroy(req);
|
|
|
|
if (ret != NE_OK || !ast_str_strlen(response)) {
|
|
ast_log(LOG_WARNING, "Unknown response to CalDAV calendar %s, request %s to %s: %s\n", pvt->owner->name, method, pvt->url, ne_get_error(pvt->session));
|
|
ast_free(response);
|
|
return NULL;
|
|
}
|
|
|
|
return response;
|
|
}
|
|
|
|
static int exchangecal_write_event(struct ast_calendar_event *event)
|
|
{
|
|
struct ast_str *body = NULL, *response = NULL, *subdir = NULL;
|
|
struct ast_str *uid = NULL, *summary = NULL, *description = NULL, *organizer = NULL,
|
|
*location = NULL, *start = NULL, *end = NULL, *busystate = NULL;
|
|
int ret = -1;
|
|
|
|
if (!event) {
|
|
ast_log(LOG_WARNING, "No event passed!\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!(event->start && event->end)) {
|
|
ast_log(LOG_WARNING, "The event must contain a start and an end\n");
|
|
return -1;
|
|
}
|
|
if (!(body = ast_str_create(512)) ||
|
|
!(subdir = ast_str_create(32))) {
|
|
ast_log(LOG_ERROR, "Could not allocate memory for request!\n");
|
|
goto write_cleanup;
|
|
}
|
|
|
|
if (!(uid = ast_str_create(32)) ||
|
|
!(summary = ast_str_create(32)) ||
|
|
!(description = ast_str_create(32)) ||
|
|
!(organizer = ast_str_create(32)) ||
|
|
!(location = ast_str_create(32)) ||
|
|
!(start = ast_str_create(32)) ||
|
|
!(end = ast_str_create(32)) ||
|
|
!(busystate = ast_str_create(32))) {
|
|
ast_log(LOG_ERROR, "Unable to allocate memory for request values\n");
|
|
goto write_cleanup;
|
|
}
|
|
|
|
if (ast_strlen_zero(event->uid)) {
|
|
uid = generate_exchange_uuid(uid);
|
|
} else {
|
|
ast_str_set(&uid, 36, "%s", event->uid);
|
|
}
|
|
|
|
if (!is_valid_uuid(uid)) {
|
|
ast_log(LOG_WARNING, "An invalid uid was provided, you may leave this field blank to have one generated for you\n");
|
|
goto write_cleanup;
|
|
}
|
|
|
|
summary = xml_encode_str(summary, event->summary);
|
|
description = xml_encode_str(description, event->description);
|
|
organizer = xml_encode_str(organizer, event->organizer);
|
|
location = xml_encode_str(location, event->location);
|
|
start = epoch_to_exchange_time(start, event->start);
|
|
end = epoch_to_exchange_time(end, event->end);
|
|
busystate = bs_to_exchange_bs(busystate, event->busy_state);
|
|
|
|
ast_str_append(&body, 0,
|
|
"<?xml version=\"1.0\"?>\n"
|
|
"<a:propertyupdate\n"
|
|
" xmlns:a=\"DAV:\"\n"
|
|
" xmlns:e=\"http://schemas.microsoft.com/exchange/\"\n"
|
|
" xmlns:mapi=\"http://schemas.microsoft.com/mapi/\"\n"
|
|
" xmlns:mapit=\"http://schemas.microsoft.com/mapi/proptag/\"\n"
|
|
" xmlns:x=\"xml:\" xmlns:cal=\"urn:schemas:calendar:\"\n"
|
|
" xmlns:dt=\"uuid:%s/\"\n" /* uid */
|
|
" xmlns:header=\"urn:schemas:mailheader:\"\n"
|
|
" xmlns:mail=\"urn:schemas:httpmail:\"\n"
|
|
">\n"
|
|
" <a:set>\n"
|
|
" <a:prop>\n"
|
|
" <a:contentclass>urn:content-classes:appointment</a:contentclass>\n"
|
|
" <e:outlookmessageclass>IPM.Appointment</e:outlookmessageclass>\n"
|
|
" <mail:subject>%s</mail:subject>\n" /* summary */
|
|
" <mail:description>%s</mail:description>\n" /* description */
|
|
" <header:to>%s</header:to>\n" /* organizer */
|
|
" <cal:location>%s</cal:location>\n" /* location */
|
|
" <cal:dtstart dt:dt=\"dateTime.tz\">%s</cal:dtstart>\n" /* start */
|
|
" <cal:dtend dt:dt=\"dateTime.tz\">%s</cal:dtend>\n" /* end */
|
|
" <cal:instancetype dt:dt=\"int\">0</cal:instancetype>\n"
|
|
" <cal:busystatus>%s</cal:busystatus>\n" /* busy_state (BUSY, FREE, BUSY_TENTATIVE) */
|
|
" <cal:meetingstatus>CONFIRMED</cal:meetingstatus>\n"
|
|
" <cal:alldayevent dt:dt=\"boolean\">0</cal:alldayevent>\n" /* XXX need to add event support for all day events */
|
|
" <cal:responserequested dt:dt=\"boolean\">0</cal:responserequested>\n"
|
|
" <mapi:finvited dt:dt=\"boolean\">1</mapi:finvited>\n"
|
|
" </a:prop>\n"
|
|
" </a:set>\n"
|
|
"</a:propertyupdate>\n",
|
|
ast_str_buffer(uid), ast_str_buffer(summary), ast_str_buffer(description), ast_str_buffer(organizer), ast_str_buffer(location), ast_str_buffer(start), ast_str_buffer(end), ast_str_buffer(busystate));
|
|
ast_verb(0, "\n\n%s\n\n", ast_str_buffer(body));
|
|
ast_str_set(&subdir, 0, "/Calendar/%s.eml", ast_str_buffer(uid));
|
|
|
|
if ((response = exchangecal_request(event->owner->tech_pvt, "PROPPATCH", body, subdir))) {
|
|
ret = 0;
|
|
}
|
|
|
|
write_cleanup:
|
|
if (uid) {
|
|
ast_free(uid);
|
|
}
|
|
if (summary) {
|
|
ast_free(summary);
|
|
}
|
|
if (description) {
|
|
ast_free(description);
|
|
}
|
|
if (organizer) {
|
|
ast_free(organizer);
|
|
}
|
|
if (location) {
|
|
ast_free(location);
|
|
}
|
|
if (start) {
|
|
ast_free(start);
|
|
}
|
|
if (end) {
|
|
ast_free(end);
|
|
}
|
|
if (busystate) {
|
|
ast_free(busystate);
|
|
}
|
|
if (body) {
|
|
ast_free(body);
|
|
}
|
|
if (response) {
|
|
ast_free(response);
|
|
}
|
|
if (subdir) {
|
|
ast_free(subdir);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
static struct ast_str *exchangecal_get_events_between(struct exchangecal_pvt *pvt, time_t start_time, time_t end_time)
|
|
{
|
|
struct ast_str *body, *response;
|
|
char start[80], end[80];
|
|
struct timeval tv = {0,};
|
|
struct ast_tm tm;
|
|
|
|
tv.tv_sec = start_time;
|
|
ast_localtime(&tv, &tm, "UTC");
|
|
ast_strftime(start, sizeof(start), "%Y/%m/%d %T", &tm);
|
|
|
|
tv.tv_sec = end_time;
|
|
ast_localtime(&tv, &tm, "UTC");
|
|
ast_strftime(end, sizeof(end), "%Y/%m/%d %T", &tm);
|
|
|
|
if (!(body = ast_str_create(512))) {
|
|
ast_log(LOG_ERROR, "Could not allocate memory for body of request!\n");
|
|
return NULL;
|
|
}
|
|
|
|
ast_str_append(&body, 0,
|
|
"<?xml version=\"1.0\"?>\n"
|
|
"<g:searchrequest xmlns:g=\"DAV:\">\n"
|
|
" <g:sql> SELECT \"urn:schemas:calendar:location\", \"urn:schemas:httpmail:subject\",\n"
|
|
" \"urn:schemas:calendar:dtstart\", \"urn:schemas:calendar:dtend\",\n"
|
|
" \"urn:schemas:calendar:busystatus\", \"urn:schemas:calendar:instancetype\",\n"
|
|
" \"urn:schemas:calendar:uid\", \"urn:schemas:httpmail:textdescription\",\n"
|
|
" \"urn:schemas:calendar:organizer\", \"urn:schemas:calendar:reminderoffset\"\n"
|
|
" FROM Scope('SHALLOW TRAVERSAL OF \"%s/Calendar\"')\n"
|
|
" WHERE NOT \"urn:schemas:calendar:instancetype\" = 1\n"
|
|
" AND \"DAV:contentclass\" = 'urn:content-classes:appointment'\n"
|
|
" AND NOT (\"urn:schemas:calendar:dtend\" < '%s'\n"
|
|
" OR \"urn:schemas:calendar:dtstart\" > '%s')\n"
|
|
" ORDER BY \"urn:schemas:calendar:dtstart\" ASC\n"
|
|
" </g:sql>\n"
|
|
"</g:searchrequest>\n", pvt->url, start, end);
|
|
|
|
ast_debug(5, "Request:\n%s\n", ast_str_buffer(body));
|
|
response = exchangecal_request(pvt, "SEARCH", body, NULL);
|
|
ast_debug(5, "Response:\n%s\n", ast_str_buffer(response));
|
|
ast_free(body);
|
|
|
|
return response;
|
|
}
|
|
|
|
static int update_exchangecal(struct exchangecal_pvt *pvt)
|
|
{
|
|
struct xmlstate state;
|
|
struct timeval now = ast_tvnow();
|
|
time_t start, end;
|
|
struct ast_str *response;
|
|
iksparser *p;
|
|
|
|
state.pvt = pvt;
|
|
start = now.tv_sec;
|
|
end = now.tv_sec + 60 * pvt->owner->timeframe;
|
|
if (!(response = exchangecal_get_events_between(pvt, start, end))) {
|
|
return -1;
|
|
}
|
|
|
|
p = iks_sax_new(&state, parse_tag, parse_cdata);
|
|
iks_parse(p, ast_str_buffer(response), ast_str_strlen(response), 1);
|
|
ast_calendar_merge_events(pvt->owner, pvt->events);
|
|
ast_free(response);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void *exchangecal_load_calendar(void *void_data)
|
|
{
|
|
struct exchangecal_pvt *pvt;
|
|
const struct ast_config *cfg;
|
|
struct ast_variable *v;
|
|
struct ast_calendar *cal = void_data;
|
|
ast_mutex_t refreshlock;
|
|
|
|
if (!(cal && (cfg = ast_calendar_config_acquire()))) {
|
|
ast_log(LOG_ERROR, "You must enable calendar support for res_exchangecal to load\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (ao2_trylock(cal)) {
|
|
if (cal->unloading) {
|
|
ast_log(LOG_WARNING, "Unloading module, load_calendar cancelled.\n");
|
|
} else {
|
|
ast_log(LOG_WARNING, "Could not lock calendar, aborting!\n");
|
|
}
|
|
ast_calendar_config_release();
|
|
return NULL;
|
|
}
|
|
|
|
if (!(pvt = ao2_alloc(sizeof(*pvt), exchangecal_destructor))) {
|
|
ast_log(LOG_ERROR, "Could not allocate exchangecal_pvt structure for calendar: %s\n", cal->name);
|
|
ast_calendar_config_release();
|
|
return NULL;
|
|
}
|
|
|
|
pvt->owner = cal;
|
|
|
|
if (!(pvt->events = ast_calendar_event_container_alloc())) {
|
|
ast_log(LOG_ERROR, "Could not allocate space for fetching events for calendar: %s\n", cal->name);
|
|
pvt = unref_exchangecal(pvt);
|
|
ao2_unlock(cal);
|
|
ast_calendar_config_release();
|
|
return NULL;
|
|
}
|
|
|
|
if (ast_string_field_init(pvt, 32)) {
|
|
ast_log(LOG_ERROR, "Couldn't allocate string field space for calendar: %s\n", cal->name);
|
|
pvt = unref_exchangecal(pvt);
|
|
ao2_unlock(cal);
|
|
ast_calendar_config_release();
|
|
return NULL;
|
|
}
|
|
|
|
for (v = ast_variable_browse(cfg, cal->name); v; v = v->next) {
|
|
if (!strcasecmp(v->name, "url")) {
|
|
ast_string_field_set(pvt, url, v->value);
|
|
} else if (!strcasecmp(v->name, "user")) {
|
|
ast_string_field_set(pvt, user, v->value);
|
|
} else if (!strcasecmp(v->name, "secret")) {
|
|
ast_string_field_set(pvt, secret, v->value);
|
|
}
|
|
}
|
|
|
|
ast_calendar_config_release();
|
|
|
|
if (ast_strlen_zero(pvt->url)) {
|
|
ast_log(LOG_WARNING, "No URL was specified for Exchange calendar '%s' - skipping.\n", cal->name);
|
|
pvt = unref_exchangecal(pvt);
|
|
ao2_unlock(cal);
|
|
return NULL;
|
|
}
|
|
|
|
if (ne_uri_parse(pvt->url, &pvt->uri) || pvt->uri.host == NULL || pvt->uri.path == NULL) {
|
|
ast_log(LOG_WARNING, "Could not parse url '%s' for Exchange calendar '%s' - skipping.\n", pvt->url, cal->name);
|
|
pvt = unref_exchangecal(pvt);
|
|
ao2_unlock(cal);
|
|
return NULL;
|
|
}
|
|
|
|
if (pvt->uri.scheme == NULL) {
|
|
pvt->uri.scheme = "http";
|
|
}
|
|
|
|
if (pvt->uri.port == 0) {
|
|
pvt->uri.port = ne_uri_defaultport(pvt->uri.scheme);
|
|
}
|
|
|
|
pvt->session = ne_session_create(pvt->uri.scheme, pvt->uri.host, pvt->uri.port);
|
|
ne_redirect_register(pvt->session);
|
|
ne_set_server_auth(pvt->session, auth_credentials, pvt);
|
|
if (!strcasecmp(pvt->uri.scheme, "https")) {
|
|
ne_ssl_trust_default_ca(pvt->session);
|
|
}
|
|
|
|
cal->tech_pvt = pvt;
|
|
|
|
ast_mutex_init(&refreshlock);
|
|
|
|
/* Load it the first time */
|
|
update_exchangecal(pvt);
|
|
|
|
ao2_unlock(cal);
|
|
|
|
/* The only writing from another thread will be if unload is true */
|
|
for (;;) {
|
|
struct timeval tv = ast_tvnow();
|
|
struct timespec ts = {0,};
|
|
|
|
ts.tv_sec = tv.tv_sec + (60 * pvt->owner->refresh);
|
|
|
|
ast_mutex_lock(&refreshlock);
|
|
while (!pvt->owner->unloading) {
|
|
if (ast_cond_timedwait(&pvt->owner->unload, &refreshlock, &ts) == ETIMEDOUT) {
|
|
break;
|
|
}
|
|
}
|
|
ast_mutex_unlock(&refreshlock);
|
|
|
|
if (pvt->owner->unloading) {
|
|
ast_debug(10, "Skipping refresh since we got a shutdown signal\n");
|
|
return NULL;
|
|
}
|
|
|
|
ast_debug(10, "Refreshing after %d minute timeout\n", pvt->owner->refresh);
|
|
|
|
update_exchangecal(pvt);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int load_module(void)
|
|
{
|
|
ne_sock_init();
|
|
if (ast_calendar_register(&exchangecal_tech)) {
|
|
ne_sock_exit();
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
|
|
return AST_MODULE_LOAD_SUCCESS;
|
|
}
|
|
|
|
static int unload_module(void)
|
|
{
|
|
ast_calendar_unregister(&exchangecal_tech);
|
|
ne_sock_exit();
|
|
return 0;
|
|
}
|
|
|
|
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Asterisk MS Exchange Calendar Integration",
|
|
.load = load_module,
|
|
.unload = unload_module,
|
|
.load_pri = AST_MODPRI_DEVSTATE_PLUGIN,
|
|
);
|