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00030 #include "asterisk.h"
00031
00032 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 413586 $")
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",
00198 (unsigned)val[0], (unsigned)val[1], (unsigned)val[2],
00199 (unsigned)val[3], (unsigned)val[4], (unsigned)val[5],
00200 (unsigned)val[6], (unsigned)val[7]);
00201 }
00202
00203 calendar = icalcomponent_new(ICAL_VCALENDAR_COMPONENT);
00204 icalcomponent_add_property(calendar, icalproperty_new_version("2.0"));
00205 icalcomponent_add_property(calendar, icalproperty_new_prodid("-//Digium, Inc.//res_caldav//EN"));
00206
00207 icalevent = icalcomponent_new(ICAL_VEVENT_COMPONENT);
00208 icalcomponent_add_property(icalevent, icalproperty_new_dtstamp(icaltime_current_time_with_zone(utc)));
00209 icalcomponent_add_property(icalevent, icalproperty_new_uid(event->uid));
00210 icalcomponent_add_property(icalevent, icalproperty_new_dtstart(icaltime_from_timet_with_zone(event->start, 0, utc)));
00211 icalcomponent_add_property(icalevent, icalproperty_new_dtend(icaltime_from_timet_with_zone(event->end, 0, utc)));
00212 if (!ast_strlen_zero(event->organizer)) {
00213 icalcomponent_add_property(icalevent, icalproperty_new_organizer(event->organizer));
00214 }
00215 if (!ast_strlen_zero(event->summary)) {
00216 icalcomponent_add_property(icalevent, icalproperty_new_summary(event->summary));
00217 }
00218 if (!ast_strlen_zero(event->description)) {
00219 icalcomponent_add_property(icalevent, icalproperty_new_description(event->description));
00220 }
00221 if (!ast_strlen_zero(event->location)) {
00222 icalcomponent_add_property(icalevent, icalproperty_new_location(event->location));
00223 }
00224 if (!ast_strlen_zero(event->categories)) {
00225 icalcomponent_add_property(icalevent, icalproperty_new_categories(event->categories));
00226 }
00227 if (event->priority > 0) {
00228 icalcomponent_add_property(icalevent, icalproperty_new_priority(event->priority));
00229 }
00230
00231 switch (event->busy_state) {
00232 case AST_CALENDAR_BS_BUSY:
00233 icalcomponent_add_property(icalevent, icalproperty_new_status(ICAL_STATUS_CONFIRMED));
00234 break;
00235
00236 case AST_CALENDAR_BS_BUSY_TENTATIVE:
00237 icalcomponent_add_property(icalevent, icalproperty_new_status(ICAL_STATUS_TENTATIVE));
00238 break;
00239
00240 default:
00241 icalcomponent_add_property(icalevent, icalproperty_new_status(ICAL_STATUS_NONE));
00242 }
00243
00244 icalcomponent_add_component(calendar, icalevent);
00245
00246 ast_str_append(&body, 0, "%s", icalcomponent_as_ical_string(calendar));
00247 ast_str_set(&subdir, 0, "%s%s.ics", pvt->url[strlen(pvt->url) - 1] == '/' ? "" : "/", event->uid);
00248
00249 response = caldav_request(pvt, "PUT", body, subdir, "text/calendar");
00250
00251 ret = 0;
00252
00253 write_cleanup:
00254 if (body) {
00255 ast_free(body);
00256 }
00257 if (response) {
00258 ast_free(response);
00259 }
00260 if (subdir) {
00261 ast_free(subdir);
00262 }
00263
00264 return ret;
00265 }
00266
00267 static struct ast_str *caldav_get_events_between(struct caldav_pvt *pvt, time_t start_time, time_t end_time)
00268 {
00269 struct ast_str *body, *response;
00270 icaltimezone *utc = icaltimezone_get_utc_timezone();
00271 icaltimetype start, end;
00272 const char *start_str, *end_str;
00273
00274 if (!(body = ast_str_create(512))) {
00275 ast_log(LOG_ERROR, "Could not allocate memory for body of request!\n");
00276 return NULL;
00277 }
00278
00279 start = icaltime_from_timet_with_zone(start_time, 0, utc);
00280 end = icaltime_from_timet_with_zone(end_time, 0, utc);
00281 start_str = icaltime_as_ical_string(start);
00282 end_str = icaltime_as_ical_string(end);
00283
00284
00285
00286
00287
00288 ast_str_append(&body, 0,
00289 "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n"
00290 "<C:calendar-query xmlns:D=\"DAV:\" xmlns:C=\"urn:ietf:params:xml:ns:caldav\">\n"
00291 " <D:prop>\n"
00292 " <C:calendar-data>\n"
00293 " <C:expand start=\"%s\" end=\"%s\"/>\n"
00294 " </C:calendar-data>\n"
00295 " </D:prop>\n"
00296 " <C:filter>\n"
00297 " <C:comp-filter name=\"VCALENDAR\">\n"
00298 " <C:comp-filter name=\"VEVENT\">\n"
00299 " <C:time-range start=\"%s\" end=\"%s\"/>\n"
00300 " </C:comp-filter>\n"
00301 " </C:comp-filter>\n"
00302 " </C:filter>\n"
00303 "</C:calendar-query>\n", start_str, end_str, start_str, end_str);
00304
00305 response = caldav_request(pvt, "REPORT", body, NULL, NULL);
00306 ast_free(body);
00307
00308 return response;
00309 }
00310
00311 static time_t icalfloat_to_timet(icaltimetype time)
00312 {
00313 struct ast_tm tm = {0,};
00314 struct timeval tv;
00315
00316 tm.tm_mday = time.day;
00317 tm.tm_mon = time.month - 1;
00318 tm.tm_year = time.year - 1900;
00319 tm.tm_hour = time.hour;
00320 tm.tm_min = time.minute;
00321 tm.tm_sec = time.second;
00322 tm.tm_isdst = -1;
00323 tv = ast_mktime(&tm, NULL);
00324
00325 return tv.tv_sec;
00326 }
00327
00328
00329
00330
00331
00332
00333
00334
00335
00336 static void caldav_add_event(icalcomponent *comp, struct icaltime_span *span, void *data)
00337 {
00338 struct caldav_pvt *pvt = data;
00339 struct ast_calendar_event *event;
00340 icaltimezone *utc = icaltimezone_get_utc_timezone();
00341 icaltimetype start, end, tmp;
00342 icalcomponent *valarm;
00343 icalproperty *prop;
00344 struct icaltriggertype trigger;
00345
00346 if (!(pvt && pvt->owner)) {
00347 ast_log(LOG_ERROR, "Require a private structure with an owner\n");
00348 return;
00349 }
00350
00351 if (!(event = ast_calendar_event_alloc(pvt->owner))) {
00352 ast_log(LOG_ERROR, "Could not allocate an event!\n");
00353 return;
00354 }
00355
00356 start = icalcomponent_get_dtstart(comp);
00357 end = icalcomponent_get_dtend(comp);
00358
00359 event->start = icaltime_get_tzid(start) ? span->start : icalfloat_to_timet(start);
00360 event->end = icaltime_get_tzid(end) ? span->end : icalfloat_to_timet(end);
00361 event->busy_state = span->is_busy ? AST_CALENDAR_BS_BUSY : AST_CALENDAR_BS_FREE;
00362
00363 if ((prop = icalcomponent_get_first_property(comp, ICAL_SUMMARY_PROPERTY))) {
00364 ast_string_field_set(event, summary, icalproperty_get_value_as_string(prop));
00365 }
00366
00367 if ((prop = icalcomponent_get_first_property(comp, ICAL_DESCRIPTION_PROPERTY))) {
00368 ast_string_field_set(event, description, icalproperty_get_value_as_string(prop));
00369 }
00370
00371 if ((prop = icalcomponent_get_first_property(comp, ICAL_ORGANIZER_PROPERTY))) {
00372 ast_string_field_set(event, organizer, icalproperty_get_value_as_string(prop));
00373 }
00374
00375 if ((prop = icalcomponent_get_first_property(comp, ICAL_LOCATION_PROPERTY))) {
00376 ast_string_field_set(event, location, icalproperty_get_value_as_string(prop));
00377 }
00378
00379 if ((prop = icalcomponent_get_first_property(comp, ICAL_CATEGORIES_PROPERTY))) {
00380 ast_string_field_set(event, categories, icalproperty_get_value_as_string(prop));
00381 }
00382
00383 if ((prop = icalcomponent_get_first_property(comp, ICAL_PRIORITY_PROPERTY))) {
00384 event->priority = icalvalue_get_integer(icalproperty_get_value(prop));
00385 }
00386
00387 if ((prop = icalcomponent_get_first_property(comp, ICAL_UID_PROPERTY))) {
00388 ast_string_field_set(event, uid, icalproperty_get_value_as_string(prop));
00389 } else {
00390 ast_log(LOG_WARNING, "No UID found, but one is required. Generating, but updates may not be acurate\n");
00391 if (!ast_strlen_zero(event->summary)) {
00392 ast_string_field_set(event, uid, event->summary);
00393 } else {
00394 char tmp[100];
00395 snprintf(tmp, sizeof(tmp), "%ld", event->start);
00396 ast_string_field_set(event, uid, tmp);
00397 }
00398 }
00399
00400
00401 for (prop = icalcomponent_get_first_property(comp, ICAL_ATTENDEE_PROPERTY);
00402 prop; prop = icalcomponent_get_next_property(comp, ICAL_ATTENDEE_PROPERTY)) {
00403 struct ast_calendar_attendee *attendee;
00404 const char *data;
00405
00406 if (!(attendee = ast_calloc(1, sizeof(*attendee)))) {
00407 event = ast_calendar_unref_event(event);
00408 return;
00409 }
00410 data = icalproperty_get_attendee(prop);
00411 if (ast_strlen_zero(data)) {
00412 ast_free(attendee);
00413 continue;
00414 }
00415 attendee->data = ast_strdup(data);
00416 AST_LIST_INSERT_TAIL(&event->attendees, attendee, next);
00417 }
00418
00419
00420
00421
00422
00423 if (!(valarm = icalcomponent_get_first_component(comp, ICAL_VALARM_COMPONENT))) {
00424 ao2_link(pvt->events, event);
00425 event = ast_calendar_unref_event(event);
00426 return;
00427 }
00428
00429 if (!(prop = icalcomponent_get_first_property(valarm, ICAL_TRIGGER_PROPERTY))) {
00430 ast_log(LOG_WARNING, "VALARM has no TRIGGER, skipping!\n");
00431 ao2_link(pvt->events, event);
00432 event = ast_calendar_unref_event(event);
00433 return;
00434 }
00435
00436 trigger = icalproperty_get_trigger(prop);
00437
00438 if (icaltriggertype_is_null_trigger(trigger)) {
00439 ast_log(LOG_WARNING, "Bad TRIGGER for VALARM, skipping!\n");
00440 ao2_link(pvt->events, event);
00441 event = ast_calendar_unref_event(event);
00442 return;
00443 }
00444
00445 if (!icaltime_is_null_time(trigger.time)) {
00446 tmp = icaltime_convert_to_zone(trigger.time, utc);
00447 event->alarm = icaltime_as_timet_with_zone(tmp, utc);
00448 } else {
00449
00450
00451 tmp = icaltime_add(start, trigger.duration);
00452 event->alarm = icaltime_as_timet_with_zone(tmp, utc);
00453 }
00454
00455 ao2_link(pvt->events, event);
00456 event = ast_calendar_unref_event(event);
00457
00458 return;
00459 }
00460
00461 struct xmlstate {
00462 int in_caldata;
00463 struct caldav_pvt *pvt;
00464 struct ast_str *cdata;
00465 time_t start;
00466 time_t end;
00467 };
00468
00469 static void handle_start_element(void *data, const xmlChar *fullname, const xmlChar **atts)
00470 {
00471 struct xmlstate *state = data;
00472
00473 if (!xmlStrcasecmp(fullname, BAD_CAST "C:calendar-data")) {
00474 state->in_caldata = 1;
00475 ast_str_reset(state->cdata);
00476 }
00477 }
00478
00479 static void handle_end_element(void *data, const xmlChar *name)
00480 {
00481 struct xmlstate *state = data;
00482 struct icaltimetype start, end;
00483 icaltimezone *utc = icaltimezone_get_utc_timezone();
00484 icalcomponent *iter;
00485 icalcomponent *comp;
00486
00487 if (xmlStrcasecmp(name, BAD_CAST "C:calendar-data")) {
00488 return;
00489 }
00490
00491 state->in_caldata = 0;
00492 if (!(state->cdata && ast_str_strlen(state->cdata))) {
00493 return;
00494 }
00495
00496
00497 start = icaltime_from_timet_with_zone(state->start, 0, utc);
00498 end = icaltime_from_timet_with_zone(state->end, 0, utc);
00499 comp = icalparser_parse_string(ast_str_buffer(state->cdata));
00500
00501 for (iter = icalcomponent_get_first_component(comp, ICAL_VEVENT_COMPONENT);
00502 iter;
00503 iter = icalcomponent_get_next_component(comp, ICAL_VEVENT_COMPONENT))
00504 {
00505 icalcomponent_foreach_recurrence(iter, start, end, caldav_add_event, state->pvt);
00506 }
00507
00508 icalcomponent_free(comp);
00509 }
00510
00511 static void handle_characters(void *data, const xmlChar *ch, int len)
00512 {
00513 struct xmlstate *state = data;
00514 xmlChar *tmp;
00515
00516 if (!state->in_caldata) {
00517 return;
00518 }
00519
00520 tmp = xmlStrndup(ch, len);
00521 ast_str_append(&state->cdata, 0, "%s", (char *)tmp);
00522 xmlFree(tmp);
00523 }
00524
00525 static int update_caldav(struct caldav_pvt *pvt)
00526 {
00527 struct timeval now = ast_tvnow();
00528 time_t start, end;
00529 struct ast_str *response;
00530 xmlSAXHandler saxHandler;
00531 struct xmlstate state = {
00532 .in_caldata = 0,
00533 .pvt = pvt
00534 };
00535
00536 start = now.tv_sec;
00537 end = now.tv_sec + 60 * pvt->owner->timeframe;
00538 if (!(response = caldav_get_events_between(pvt, start, end))) {
00539 return -1;
00540 }
00541
00542 if (!(state.cdata = ast_str_create(512))) {
00543 ast_free(response);
00544 return -1;
00545 }
00546
00547 state.start = start;
00548 state.end = end;
00549
00550 memset(&saxHandler, 0, sizeof(saxHandler));
00551 saxHandler.startElement = handle_start_element;
00552 saxHandler.endElement = handle_end_element;
00553 saxHandler.characters = handle_characters;
00554
00555 xmlSAXUserParseMemory(&saxHandler, &state, ast_str_buffer(response), ast_str_strlen(response));
00556
00557 ast_calendar_merge_events(pvt->owner, pvt->events);
00558
00559 ast_free(response);
00560 ast_free(state.cdata);
00561
00562 return 0;
00563 }
00564
00565 static int verify_cert(void *userdata, int failures, const ne_ssl_certificate *cert)
00566 {
00567
00568 return 0;
00569 }
00570
00571 static void *caldav_load_calendar(void *void_data)
00572 {
00573 struct caldav_pvt *pvt;
00574 const struct ast_config *cfg;
00575 struct ast_variable *v;
00576 struct ast_calendar *cal = void_data;
00577 ast_mutex_t refreshlock;
00578
00579 if (!(cal && (cfg = ast_calendar_config_acquire()))) {
00580 ast_log(LOG_ERROR, "You must enable calendar support for res_caldav to load\n");
00581 return NULL;
00582 }
00583
00584 if (ao2_trylock(cal)) {
00585 if (cal->unloading) {
00586 ast_log(LOG_WARNING, "Unloading module, load_calendar cancelled.\n");
00587 } else {
00588 ast_log(LOG_WARNING, "Could not lock calendar, aborting!\n");
00589 }
00590 ast_calendar_config_release();
00591 return NULL;
00592 }
00593
00594 if (!(pvt = ao2_alloc(sizeof(*pvt), caldav_destructor))) {
00595 ast_log(LOG_ERROR, "Could not allocate caldav_pvt structure for calendar: %s\n", cal->name);
00596 ast_calendar_config_release();
00597 return NULL;
00598 }
00599
00600 pvt->owner = cal;
00601
00602 if (!(pvt->events = ast_calendar_event_container_alloc())) {
00603 ast_log(LOG_ERROR, "Could not allocate space for fetching events for calendar: %s\n", cal->name);
00604 pvt = unref_caldav(pvt);
00605 ao2_unlock(cal);
00606 ast_calendar_config_release();
00607 return NULL;
00608 }
00609
00610 if (ast_string_field_init(pvt, 32)) {
00611 ast_log(LOG_ERROR, "Couldn't allocate string field space for calendar: %s\n", cal->name);
00612 pvt = unref_caldav(pvt);
00613 ao2_unlock(cal);
00614 ast_calendar_config_release();
00615 return NULL;
00616 }
00617
00618 for (v = ast_variable_browse(cfg, cal->name); v; v = v->next) {
00619 if (!strcasecmp(v->name, "url")) {
00620 ast_string_field_set(pvt, url, v->value);
00621 } else if (!strcasecmp(v->name, "user")) {
00622 ast_string_field_set(pvt, user, v->value);
00623 } else if (!strcasecmp(v->name, "secret")) {
00624 ast_string_field_set(pvt, secret, v->value);
00625 }
00626 }
00627
00628 ast_calendar_config_release();
00629
00630 if (ast_strlen_zero(pvt->url)) {
00631 ast_log(LOG_WARNING, "No URL was specified for CalDAV calendar '%s' - skipping.\n", cal->name);
00632 pvt = unref_caldav(pvt);
00633 ao2_unlock(cal);
00634 return NULL;
00635 }
00636
00637 if (ne_uri_parse(pvt->url, &pvt->uri) || pvt->uri.host == NULL || pvt->uri.path == NULL) {
00638 ast_log(LOG_WARNING, "Could not parse url '%s' for CalDAV calendar '%s' - skipping.\n", pvt->url, cal->name);
00639 pvt = unref_caldav(pvt);
00640 ao2_unlock(cal);
00641 return NULL;
00642 }
00643
00644 if (pvt->uri.scheme == NULL) {
00645 pvt->uri.scheme = "http";
00646 }
00647
00648 if (pvt->uri.port == 0) {
00649 pvt->uri.port = ne_uri_defaultport(pvt->uri.scheme);
00650 }
00651
00652 pvt->session = ne_session_create(pvt->uri.scheme, pvt->uri.host, pvt->uri.port);
00653 ne_redirect_register(pvt->session);
00654 ne_set_server_auth(pvt->session, auth_credentials, pvt);
00655 if (!strcasecmp(pvt->uri.scheme, "https")) {
00656 ne_ssl_trust_default_ca(pvt->session);
00657 ne_ssl_set_verify(pvt->session, verify_cert, NULL);
00658 }
00659
00660 cal->tech_pvt = pvt;
00661
00662 ast_mutex_init(&refreshlock);
00663
00664
00665 update_caldav(pvt);
00666
00667 ao2_unlock(cal);
00668
00669
00670 for (;;) {
00671 struct timeval tv = ast_tvnow();
00672 struct timespec ts = {0,};
00673
00674 ts.tv_sec = tv.tv_sec + (60 * pvt->owner->refresh);
00675
00676 ast_mutex_lock(&refreshlock);
00677 while (!pvt->owner->unloading) {
00678 if (ast_cond_timedwait(&pvt->owner->unload, &refreshlock, &ts) == ETIMEDOUT) {
00679 break;
00680 }
00681 }
00682 ast_mutex_unlock(&refreshlock);
00683
00684 if (pvt->owner->unloading) {
00685 ast_debug(10, "Skipping refresh since we got a shutdown signal\n");
00686 return NULL;
00687 }
00688
00689 ast_debug(10, "Refreshing after %d minute timeout\n", pvt->owner->refresh);
00690
00691 update_caldav(pvt);
00692 }
00693
00694 return NULL;
00695 }
00696
00697 static int load_module(void)
00698 {
00699 ne_sock_init();
00700 if (ast_calendar_register(&caldav_tech)) {
00701 ne_sock_exit();
00702 return AST_MODULE_LOAD_DECLINE;
00703 }
00704
00705 return AST_MODULE_LOAD_SUCCESS;
00706 }
00707
00708 static int unload_module(void)
00709 {
00710 ast_calendar_unregister(&caldav_tech);
00711 ne_sock_exit();
00712 return 0;
00713 }
00714
00715 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Asterisk CalDAV Calendar Integration",
00716 .load = load_module,
00717 .unload = unload_module,
00718 .load_pri = AST_MODPRI_DEVSTATE_PLUGIN,
00719 );