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00030 #include "asterisk.h"
00031
00032 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 366880 $")
00033
00034 #include <libical/ical.h>
00035 #include <ne_session.h>
00036 #include <ne_uri.h>
00037 #include <ne_request.h>
00038 #include <ne_auth.h>
00039 #include <ne_redirect.h>
00040 #include <libxml/xmlmemory.h>
00041 #include <libxml/parser.h>
00042
00043 #include "asterisk/module.h"
00044 #include "asterisk/calendar.h"
00045 #include "asterisk/lock.h"
00046 #include "asterisk/config.h"
00047 #include "asterisk/astobj2.h"
00048
00049 static void *caldav_load_calendar(void *data);
00050 static void *unref_caldav(void *obj);
00051 static int caldav_write_event(struct ast_calendar_event *event);
00052
00053 static struct ast_calendar_tech caldav_tech = {
00054 .type = "caldav",
00055 .description = "CalDAV calendars",
00056 .module = AST_MODULE,
00057 .load_calendar = caldav_load_calendar,
00058 .unref_calendar = unref_caldav,
00059 .write_event = caldav_write_event,
00060 };
00061
00062 struct caldav_pvt {
00063 AST_DECLARE_STRING_FIELDS(
00064 AST_STRING_FIELD(url);
00065 AST_STRING_FIELD(user);
00066 AST_STRING_FIELD(secret);
00067 );
00068 struct ast_calendar *owner;
00069 ne_uri uri;
00070 ne_session *session;
00071 struct ao2_container *events;
00072 };
00073
00074 static void caldav_destructor(void *obj)
00075 {
00076 struct caldav_pvt *pvt = obj;
00077
00078 ast_debug(1, "Destroying pvt for CalDAV calendar %s\n", pvt->owner->name);
00079 if (pvt->session) {
00080 ne_session_destroy(pvt->session);
00081 }
00082 ast_string_field_free_memory(pvt);
00083
00084 ao2_callback(pvt->events, OBJ_UNLINK | OBJ_NODATA | OBJ_MULTIPLE, NULL, NULL);
00085
00086 ao2_ref(pvt->events, -1);
00087 }
00088
00089 static void *unref_caldav(void *obj)
00090 {
00091 struct caldav_pvt *pvt = obj;
00092
00093 ao2_ref(pvt, -1);
00094 return NULL;
00095 }
00096
00097 static int fetch_response_reader(void *data, const char *block, size_t len)
00098 {
00099 struct ast_str **response = data;
00100 unsigned char *tmp;
00101
00102 if (!(tmp = ast_malloc(len + 1))) {
00103 return -1;
00104 }
00105 memcpy(tmp, block, len);
00106 tmp[len] = '\0';
00107 ast_str_append(response, 0, "%s", tmp);
00108 ast_free(tmp);
00109
00110 return 0;
00111 }
00112
00113 static int auth_credentials(void *userdata, const char *realm, int attempts, char *username, char *secret)
00114 {
00115 struct caldav_pvt *pvt = userdata;
00116
00117 if (attempts > 1) {
00118 ast_log(LOG_WARNING, "Invalid username or password for CalDAV calendar '%s'\n", pvt->owner->name);
00119 return -1;
00120 }
00121
00122 ne_strnzcpy(username, pvt->user, NE_ABUFSIZ);
00123 ne_strnzcpy(secret, pvt->secret, NE_ABUFSIZ);
00124
00125 return 0;
00126 }
00127
00128 static struct ast_str *caldav_request(struct caldav_pvt *pvt, const char *method, struct ast_str *req_body, struct ast_str *subdir, const char *content_type)
00129 {
00130 struct ast_str *response;
00131 ne_request *req;
00132 int ret;
00133 char buf[1000];
00134
00135 if (!pvt) {
00136 ast_log(LOG_ERROR, "There is no private!\n");
00137 return NULL;
00138 }
00139
00140 if (!(response = ast_str_create(512))) {
00141 ast_log(LOG_ERROR, "Could not allocate memory for response.\n");
00142 return NULL;
00143 }
00144
00145 snprintf(buf, sizeof(buf), "%s%s", pvt->uri.path, subdir ? ast_str_buffer(subdir) : "");
00146
00147 req = ne_request_create(pvt->session, method, buf);
00148 ne_add_response_body_reader(req, ne_accept_2xx, fetch_response_reader, &response);
00149 ne_set_request_body_buffer(req, ast_str_buffer(req_body), ast_str_strlen(req_body));
00150 ne_add_request_header(req, "Content-type", ast_strlen_zero(content_type) ? "text/xml" : content_type);
00151
00152 ret = ne_request_dispatch(req);
00153 ne_request_destroy(req);
00154
00155 if (ret != NE_OK || !ast_str_strlen(response)) {
00156 if (ret != NE_OK) {
00157 ast_log(LOG_WARNING, "Unknown response to CalDAV calendar %s, request %s to %s: %s\n", pvt->owner->name, method, buf, ne_get_error(pvt->session));
00158 }
00159 ast_free(response);
00160 return NULL;
00161 }
00162
00163 return response;
00164 }
00165
00166 static int caldav_write_event(struct ast_calendar_event *event)
00167 {
00168 struct caldav_pvt *pvt;
00169 struct ast_str *body = NULL, *response = NULL, *subdir = NULL;
00170 icalcomponent *calendar, *icalevent;
00171 icaltimezone *utc = icaltimezone_get_utc_timezone();
00172 int ret = -1;
00173
00174 if (!event) {
00175 ast_log(LOG_WARNING, "No event passed!\n");
00176 return -1;
00177 }
00178
00179 if (!(event->start && event->end)) {
00180 ast_log(LOG_WARNING, "The event must contain a start and an end\n");
00181 return -1;
00182 }
00183 if (!(body = ast_str_create(512)) ||
00184 !(subdir = ast_str_create(32))) {
00185 ast_log(LOG_ERROR, "Could not allocate memory for request!\n");
00186 goto write_cleanup;
00187 }
00188
00189 pvt = event->owner->tech_pvt;
00190
00191 if (ast_strlen_zero(event->uid)) {
00192 unsigned short val[8];
00193 int x;
00194 for (x = 0; x < 8; x++) {
00195 val[x] = ast_random();
00196 }
00197 ast_string_field_build(event, uid, "%04x%04x-%04x-%04x-%04x-%04x%04x%04x", val[0], val[1], val[2], val[3], val[4], val[5], val[6], val[7]);
00198 }
00199
00200 calendar = icalcomponent_new(ICAL_VCALENDAR_COMPONENT);
00201 icalcomponent_add_property(calendar, icalproperty_new_version("2.0"));
00202 icalcomponent_add_property(calendar, icalproperty_new_prodid("-//Digium, Inc.//res_caldav//EN"));
00203
00204 icalevent = icalcomponent_new(ICAL_VEVENT_COMPONENT);
00205 icalcomponent_add_property(icalevent, icalproperty_new_dtstamp(icaltime_current_time_with_zone(utc)));
00206 icalcomponent_add_property(icalevent, icalproperty_new_uid(event->uid));
00207 icalcomponent_add_property(icalevent, icalproperty_new_dtstart(icaltime_from_timet_with_zone(event->start, 0, utc)));
00208 icalcomponent_add_property(icalevent, icalproperty_new_dtend(icaltime_from_timet_with_zone(event->end, 0, utc)));
00209 if (!ast_strlen_zero(event->organizer)) {
00210 icalcomponent_add_property(icalevent, icalproperty_new_organizer(event->organizer));
00211 }
00212 if (!ast_strlen_zero(event->summary)) {
00213 icalcomponent_add_property(icalevent, icalproperty_new_summary(event->summary));
00214 }
00215 if (!ast_strlen_zero(event->description)) {
00216 icalcomponent_add_property(icalevent, icalproperty_new_description(event->description));
00217 }
00218 if (!ast_strlen_zero(event->location)) {
00219 icalcomponent_add_property(icalevent, icalproperty_new_location(event->location));
00220 }
00221 if (!ast_strlen_zero(event->categories)) {
00222 icalcomponent_add_property(icalevent, icalproperty_new_categories(event->categories));
00223 }
00224 if (event->priority > 0) {
00225 icalcomponent_add_property(icalevent, icalproperty_new_priority(event->priority));
00226 }
00227
00228 switch (event->busy_state) {
00229 case AST_CALENDAR_BS_BUSY:
00230 icalcomponent_add_property(icalevent, icalproperty_new_status(ICAL_STATUS_CONFIRMED));
00231 break;
00232
00233 case AST_CALENDAR_BS_BUSY_TENTATIVE:
00234 icalcomponent_add_property(icalevent, icalproperty_new_status(ICAL_STATUS_TENTATIVE));
00235 break;
00236
00237 default:
00238 icalcomponent_add_property(icalevent, icalproperty_new_status(ICAL_STATUS_NONE));
00239 }
00240
00241 icalcomponent_add_component(calendar, icalevent);
00242
00243 ast_str_append(&body, 0, "%s", icalcomponent_as_ical_string(calendar));
00244 ast_str_set(&subdir, 0, "%s%s.ics", pvt->url[strlen(pvt->url) - 1] == '/' ? "" : "/", event->uid);
00245
00246 response = caldav_request(pvt, "PUT", body, subdir, "text/calendar");
00247
00248 ret = 0;
00249
00250 write_cleanup:
00251 if (body) {
00252 ast_free(body);
00253 }
00254 if (response) {
00255 ast_free(response);
00256 }
00257 if (subdir) {
00258 ast_free(subdir);
00259 }
00260
00261 return ret;
00262 }
00263
00264 static struct ast_str *caldav_get_events_between(struct caldav_pvt *pvt, time_t start_time, time_t end_time)
00265 {
00266 struct ast_str *body, *response;
00267 icaltimezone *utc = icaltimezone_get_utc_timezone();
00268 icaltimetype start, end;
00269 const char *start_str, *end_str;
00270
00271 if (!(body = ast_str_create(512))) {
00272 ast_log(LOG_ERROR, "Could not allocate memory for body of request!\n");
00273 return NULL;
00274 }
00275
00276 start = icaltime_from_timet_with_zone(start_time, 0, utc);
00277 end = icaltime_from_timet_with_zone(end_time, 0, utc);
00278 start_str = icaltime_as_ical_string(start);
00279 end_str = icaltime_as_ical_string(end);
00280
00281
00282
00283
00284
00285 ast_str_append(&body, 0,
00286 "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n"
00287 "<C:calendar-query xmlns:D=\"DAV:\" xmlns:C=\"urn:ietf:params:xml:ns:caldav\">\n"
00288 " <D:prop>\n"
00289 " <C:calendar-data>\n"
00290 " <C:expand start=\"%s\" end=\"%s\"/>\n"
00291 " </C:calendar-data>\n"
00292 " </D:prop>\n"
00293 " <C:filter>\n"
00294 " <C:comp-filter name=\"VCALENDAR\">\n"
00295 " <C:comp-filter name=\"VEVENT\">\n"
00296 " <C:time-range start=\"%s\" end=\"%s\"/>\n"
00297 " </C:comp-filter>\n"
00298 " </C:comp-filter>\n"
00299 " </C:filter>\n"
00300 "</C:calendar-query>\n", start_str, end_str, start_str, end_str);
00301
00302 response = caldav_request(pvt, "REPORT", body, NULL, NULL);
00303 ast_free(body);
00304
00305 return response;
00306 }
00307
00308 static time_t icalfloat_to_timet(icaltimetype time)
00309 {
00310 struct ast_tm tm = {0,};
00311 struct timeval tv;
00312
00313 tm.tm_mday = time.day;
00314 tm.tm_mon = time.month - 1;
00315 tm.tm_year = time.year - 1900;
00316 tm.tm_hour = time.hour;
00317 tm.tm_min = time.minute;
00318 tm.tm_sec = time.second;
00319 tm.tm_isdst = -1;
00320 tv = ast_mktime(&tm, NULL);
00321
00322 return tv.tv_sec;
00323 }
00324
00325
00326
00327
00328
00329
00330
00331
00332
00333 static void caldav_add_event(icalcomponent *comp, struct icaltime_span *span, void *data)
00334 {
00335 struct caldav_pvt *pvt = data;
00336 struct ast_calendar_event *event;
00337 icaltimezone *utc = icaltimezone_get_utc_timezone();
00338 icaltimetype start, end, tmp;
00339 icalcomponent *valarm;
00340 icalproperty *prop;
00341 struct icaltriggertype trigger;
00342
00343 if (!(pvt && pvt->owner)) {
00344 ast_log(LOG_ERROR, "Require a private structure with an owner\n");
00345 return;
00346 }
00347
00348 if (!(event = ast_calendar_event_alloc(pvt->owner))) {
00349 ast_log(LOG_ERROR, "Could not allocate an event!\n");
00350 return;
00351 }
00352
00353 start = icalcomponent_get_dtstart(comp);
00354 end = icalcomponent_get_dtend(comp);
00355
00356 event->start = icaltime_get_tzid(start) ? span->start : icalfloat_to_timet(start);
00357 event->end = icaltime_get_tzid(end) ? span->end : icalfloat_to_timet(end);
00358 event->busy_state = span->is_busy ? AST_CALENDAR_BS_BUSY : AST_CALENDAR_BS_FREE;
00359
00360 if ((prop = icalcomponent_get_first_property(comp, ICAL_SUMMARY_PROPERTY))) {
00361 ast_string_field_set(event, summary, icalproperty_get_value_as_string(prop));
00362 }
00363
00364 if ((prop = icalcomponent_get_first_property(comp, ICAL_DESCRIPTION_PROPERTY))) {
00365 ast_string_field_set(event, description, icalproperty_get_value_as_string(prop));
00366 }
00367
00368 if ((prop = icalcomponent_get_first_property(comp, ICAL_ORGANIZER_PROPERTY))) {
00369 ast_string_field_set(event, organizer, icalproperty_get_value_as_string(prop));
00370 }
00371
00372 if ((prop = icalcomponent_get_first_property(comp, ICAL_LOCATION_PROPERTY))) {
00373 ast_string_field_set(event, location, icalproperty_get_value_as_string(prop));
00374 }
00375
00376 if ((prop = icalcomponent_get_first_property(comp, ICAL_CATEGORIES_PROPERTY))) {
00377 ast_string_field_set(event, categories, icalproperty_get_value_as_string(prop));
00378 }
00379
00380 if ((prop = icalcomponent_get_first_property(comp, ICAL_PRIORITY_PROPERTY))) {
00381 event->priority = icalvalue_get_integer(icalproperty_get_value(prop));
00382 }
00383
00384 if ((prop = icalcomponent_get_first_property(comp, ICAL_UID_PROPERTY))) {
00385 ast_string_field_set(event, uid, icalproperty_get_value_as_string(prop));
00386 } else {
00387 ast_log(LOG_WARNING, "No UID found, but one is required. Generating, but updates may not be acurate\n");
00388 if (!ast_strlen_zero(event->summary)) {
00389 ast_string_field_set(event, uid, event->summary);
00390 } else {
00391 char tmp[100];
00392 snprintf(tmp, sizeof(tmp), "%lu", event->start);
00393 ast_string_field_set(event, uid, tmp);
00394 }
00395 }
00396
00397
00398 for (prop = icalcomponent_get_first_property(comp, ICAL_ATTENDEE_PROPERTY);
00399 prop; prop = icalcomponent_get_next_property(comp, ICAL_ATTENDEE_PROPERTY)) {
00400 struct ast_calendar_attendee *attendee;
00401 const char *data;
00402
00403 if (!(attendee = ast_calloc(1, sizeof(*attendee)))) {
00404 event = ast_calendar_unref_event(event);
00405 return;
00406 }
00407 data = icalproperty_get_attendee(prop);
00408 if (ast_strlen_zero(data)) {
00409 ast_free(attendee);
00410 continue;
00411 }
00412 attendee->data = ast_strdup(data);
00413 AST_LIST_INSERT_TAIL(&event->attendees, attendee, next);
00414 }
00415
00416
00417
00418
00419
00420 if (!(valarm = icalcomponent_get_first_component(comp, ICAL_VALARM_COMPONENT))) {
00421 ao2_link(pvt->events, event);
00422 event = ast_calendar_unref_event(event);
00423 return;
00424 }
00425
00426 if (!(prop = icalcomponent_get_first_property(valarm, ICAL_TRIGGER_PROPERTY))) {
00427 ast_log(LOG_WARNING, "VALARM has no TRIGGER, skipping!\n");
00428 ao2_link(pvt->events, event);
00429 event = ast_calendar_unref_event(event);
00430 return;
00431 }
00432
00433 trigger = icalproperty_get_trigger(prop);
00434
00435 if (icaltriggertype_is_null_trigger(trigger)) {
00436 ast_log(LOG_WARNING, "Bad TRIGGER for VALARM, skipping!\n");
00437 ao2_link(pvt->events, event);
00438 event = ast_calendar_unref_event(event);
00439 return;
00440 }
00441
00442 if (!icaltime_is_null_time(trigger.time)) {
00443 tmp = icaltime_convert_to_zone(trigger.time, utc);
00444 event->alarm = icaltime_as_timet_with_zone(tmp, utc);
00445 } else {
00446
00447
00448 tmp = icaltime_add(start, trigger.duration);
00449 event->alarm = icaltime_as_timet_with_zone(tmp, utc);
00450 }
00451
00452 ao2_link(pvt->events, event);
00453 event = ast_calendar_unref_event(event);
00454
00455 return;
00456 }
00457
00458 struct xmlstate {
00459 int in_caldata;
00460 struct caldav_pvt *pvt;
00461 struct ast_str *cdata;
00462 time_t start;
00463 time_t end;
00464 };
00465
00466 static void handle_start_element(void *data, const xmlChar *fullname, const xmlChar **atts)
00467 {
00468 struct xmlstate *state = data;
00469
00470 if (!xmlStrcasecmp(fullname, BAD_CAST "C:calendar-data")) {
00471 state->in_caldata = 1;
00472 ast_str_reset(state->cdata);
00473 }
00474 }
00475
00476 static void handle_end_element(void *data, const xmlChar *name)
00477 {
00478 struct xmlstate *state = data;
00479 struct icaltimetype start, end;
00480 icaltimezone *utc = icaltimezone_get_utc_timezone();
00481 icalcomponent *iter;
00482 icalcomponent *comp;
00483
00484 if (xmlStrcasecmp(name, BAD_CAST "C:calendar-data")) {
00485 return;
00486 }
00487
00488 state->in_caldata = 0;
00489 if (!(state->cdata && ast_str_strlen(state->cdata))) {
00490 return;
00491 }
00492
00493
00494 start = icaltime_from_timet_with_zone(state->start, 0, utc);
00495 end = icaltime_from_timet_with_zone(state->end, 0, utc);
00496 comp = icalparser_parse_string(ast_str_buffer(state->cdata));
00497
00498 for (iter = icalcomponent_get_first_component(comp, ICAL_VEVENT_COMPONENT);
00499 iter;
00500 iter = icalcomponent_get_next_component(comp, ICAL_VEVENT_COMPONENT))
00501 {
00502 icalcomponent_foreach_recurrence(iter, start, end, caldav_add_event, state->pvt);
00503 }
00504
00505 icalcomponent_free(comp);
00506 }
00507
00508 static void handle_characters(void *data, const xmlChar *ch, int len)
00509 {
00510 struct xmlstate *state = data;
00511 xmlChar *tmp;
00512
00513 if (!state->in_caldata) {
00514 return;
00515 }
00516
00517 tmp = xmlStrndup(ch, len);
00518 ast_str_append(&state->cdata, 0, "%s", (char *)tmp);
00519 xmlFree(tmp);
00520 }
00521
00522 static int update_caldav(struct caldav_pvt *pvt)
00523 {
00524 struct timeval now = ast_tvnow();
00525 time_t start, end;
00526 struct ast_str *response;
00527 xmlSAXHandler saxHandler;
00528 struct xmlstate state = {
00529 .in_caldata = 0,
00530 .pvt = pvt
00531 };
00532
00533 start = now.tv_sec;
00534 end = now.tv_sec + 60 * pvt->owner->timeframe;
00535 if (!(response = caldav_get_events_between(pvt, start, end))) {
00536 return -1;
00537 }
00538
00539 if (!(state.cdata = ast_str_create(512))) {
00540 ast_free(response);
00541 return -1;
00542 }
00543
00544 state.start = start;
00545 state.end = end;
00546
00547 memset(&saxHandler, 0, sizeof(saxHandler));
00548 saxHandler.startElement = handle_start_element;
00549 saxHandler.endElement = handle_end_element;
00550 saxHandler.characters = handle_characters;
00551
00552 xmlSAXUserParseMemory(&saxHandler, &state, ast_str_buffer(response), ast_str_strlen(response));
00553
00554 ast_calendar_merge_events(pvt->owner, pvt->events);
00555
00556 ast_free(response);
00557 ast_free(state.cdata);
00558
00559 return 0;
00560 }
00561
00562 static int verify_cert(void *userdata, int failures, const ne_ssl_certificate *cert)
00563 {
00564
00565 return 0;
00566 }
00567
00568 static void *caldav_load_calendar(void *void_data)
00569 {
00570 struct caldav_pvt *pvt;
00571 const struct ast_config *cfg;
00572 struct ast_variable *v;
00573 struct ast_calendar *cal = void_data;
00574 ast_mutex_t refreshlock;
00575
00576 if (!(cal && (cfg = ast_calendar_config_acquire()))) {
00577 ast_log(LOG_ERROR, "You must enable calendar support for res_caldav to load\n");
00578 return NULL;
00579 }
00580
00581 if (ao2_trylock(cal)) {
00582 if (cal->unloading) {
00583 ast_log(LOG_WARNING, "Unloading module, load_calendar cancelled.\n");
00584 } else {
00585 ast_log(LOG_WARNING, "Could not lock calendar, aborting!\n");
00586 }
00587 ast_calendar_config_release();
00588 return NULL;
00589 }
00590
00591 if (!(pvt = ao2_alloc(sizeof(*pvt), caldav_destructor))) {
00592 ast_log(LOG_ERROR, "Could not allocate caldav_pvt structure for calendar: %s\n", cal->name);
00593 ast_calendar_config_release();
00594 return NULL;
00595 }
00596
00597 pvt->owner = cal;
00598
00599 if (!(pvt->events = ast_calendar_event_container_alloc())) {
00600 ast_log(LOG_ERROR, "Could not allocate space for fetching events for calendar: %s\n", cal->name);
00601 pvt = unref_caldav(pvt);
00602 ao2_unlock(cal);
00603 ast_calendar_config_release();
00604 return NULL;
00605 }
00606
00607 if (ast_string_field_init(pvt, 32)) {
00608 ast_log(LOG_ERROR, "Couldn't allocate string field space for calendar: %s\n", cal->name);
00609 pvt = unref_caldav(pvt);
00610 ao2_unlock(cal);
00611 ast_calendar_config_release();
00612 return NULL;
00613 }
00614
00615 for (v = ast_variable_browse(cfg, cal->name); v; v = v->next) {
00616 if (!strcasecmp(v->name, "url")) {
00617 ast_string_field_set(pvt, url, v->value);
00618 } else if (!strcasecmp(v->name, "user")) {
00619 ast_string_field_set(pvt, user, v->value);
00620 } else if (!strcasecmp(v->name, "secret")) {
00621 ast_string_field_set(pvt, secret, v->value);
00622 }
00623 }
00624
00625 ast_calendar_config_release();
00626
00627 if (ast_strlen_zero(pvt->url)) {
00628 ast_log(LOG_WARNING, "No URL was specified for CalDAV calendar '%s' - skipping.\n", cal->name);
00629 pvt = unref_caldav(pvt);
00630 ao2_unlock(cal);
00631 return NULL;
00632 }
00633
00634 if (ne_uri_parse(pvt->url, &pvt->uri) || pvt->uri.host == NULL || pvt->uri.path == NULL) {
00635 ast_log(LOG_WARNING, "Could not parse url '%s' for CalDAV calendar '%s' - skipping.\n", pvt->url, cal->name);
00636 pvt = unref_caldav(pvt);
00637 ao2_unlock(cal);
00638 return NULL;
00639 }
00640
00641 if (pvt->uri.scheme == NULL) {
00642 pvt->uri.scheme = "http";
00643 }
00644
00645 if (pvt->uri.port == 0) {
00646 pvt->uri.port = ne_uri_defaultport(pvt->uri.scheme);
00647 }
00648
00649 pvt->session = ne_session_create(pvt->uri.scheme, pvt->uri.host, pvt->uri.port);
00650 ne_redirect_register(pvt->session);
00651 ne_set_server_auth(pvt->session, auth_credentials, pvt);
00652 if (!strcasecmp(pvt->uri.scheme, "https")) {
00653 ne_ssl_trust_default_ca(pvt->session);
00654 ne_ssl_set_verify(pvt->session, verify_cert, NULL);
00655 }
00656
00657 cal->tech_pvt = pvt;
00658
00659 ast_mutex_init(&refreshlock);
00660
00661
00662 update_caldav(pvt);
00663
00664 ao2_unlock(cal);
00665
00666
00667 for (;;) {
00668 struct timeval tv = ast_tvnow();
00669 struct timespec ts = {0,};
00670
00671 ts.tv_sec = tv.tv_sec + (60 * pvt->owner->refresh);
00672
00673 ast_mutex_lock(&refreshlock);
00674 while (!pvt->owner->unloading) {
00675 if (ast_cond_timedwait(&pvt->owner->unload, &refreshlock, &ts) == ETIMEDOUT) {
00676 break;
00677 }
00678 }
00679 ast_mutex_unlock(&refreshlock);
00680
00681 if (pvt->owner->unloading) {
00682 ast_debug(10, "Skipping refresh since we got a shutdown signal\n");
00683 return NULL;
00684 }
00685
00686 ast_debug(10, "Refreshing after %d minute timeout\n", pvt->owner->refresh);
00687
00688 update_caldav(pvt);
00689 }
00690
00691 return NULL;
00692 }
00693
00694 static int load_module(void)
00695 {
00696 ne_sock_init();
00697 if (ast_calendar_register(&caldav_tech)) {
00698 ne_sock_exit();
00699 return AST_MODULE_LOAD_DECLINE;
00700 }
00701
00702 return AST_MODULE_LOAD_SUCCESS;
00703 }
00704
00705 static int unload_module(void)
00706 {
00707 ast_calendar_unregister(&caldav_tech);
00708 ne_sock_exit();
00709 return 0;
00710 }
00711
00712 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Asterisk CalDAV Calendar Integration",
00713 .load = load_module,
00714 .unload = unload_module,
00715 .load_pri = AST_MODPRI_DEVSTATE_PLUGIN,
00716 );