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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 <iksemel.h>
00041
00042 #include "asterisk/module.h"
00043 #include "asterisk/calendar.h"
00044 #include "asterisk/lock.h"
00045 #include "asterisk/config.h"
00046 #include "asterisk/astobj2.h"
00047
00048 static void *exchangecal_load_calendar(void *data);
00049 static void *unref_exchangecal(void *obj);
00050 static int exchangecal_write_event(struct ast_calendar_event *event);
00051
00052 static struct ast_calendar_tech exchangecal_tech = {
00053 .type = "exchange",
00054 .description = "MS Exchange calendars",
00055 .module = AST_MODULE,
00056 .load_calendar = exchangecal_load_calendar,
00057 .unref_calendar = unref_exchangecal,
00058 .write_event = exchangecal_write_event,
00059 };
00060
00061 struct exchangecal_pvt {
00062 AST_DECLARE_STRING_FIELDS(
00063 AST_STRING_FIELD(url);
00064 AST_STRING_FIELD(user);
00065 AST_STRING_FIELD(secret);
00066 );
00067 struct ast_calendar *owner;
00068 ne_uri uri;
00069 ne_session *session;
00070 struct ao2_container *events;
00071 };
00072
00073 struct xmlstate {
00074 char tag[80];
00075 int in_response;
00076 int in_propstat;
00077 int in_prop;
00078 void *ptr;
00079 struct exchangecal_pvt *pvt;
00080 };
00081
00082 static int parse_tag(void *data, char *name, char **atts, int type)
00083 {
00084 struct xmlstate *state = data;
00085 char *tmp;
00086
00087 if ((tmp = strchr(name, ':'))) {
00088 tmp++;
00089 } else {
00090 return IKS_HOOK;
00091 }
00092
00093 ast_copy_string(state->tag, tmp, sizeof(state->tag));
00094
00095 switch (type) {
00096 case IKS_OPEN:
00097 if (!strcasecmp(state->tag, "response")) {
00098 struct ast_calendar_event *event;
00099
00100 state->in_response = 1;
00101 if (!(event = ast_calendar_event_alloc(state->pvt->owner))) {
00102 return IKS_NOMEM;
00103 }
00104 state->ptr = event;
00105 } else if (!strcasecmp(state->tag, "propstat")) {
00106 state->in_propstat = 1;
00107 } else if (!strcasecmp(state->tag, "prop")) {
00108 state->in_prop = 1;
00109 }
00110 break;
00111
00112 case IKS_CLOSE:
00113 if (!strcasecmp(state->tag, "response")) {
00114 struct ao2_container *events = state->pvt->events;
00115 struct ast_calendar_event *event = state->ptr;
00116
00117 state->in_response = 0;
00118 if (ast_strlen_zero(event->uid)) {
00119 ast_log(LOG_ERROR, "This event has no UID, something has gone wrong\n");
00120 event = ast_calendar_unref_event(event);
00121 return IKS_HOOK;
00122 }
00123 ao2_link(events, event);
00124 event = ast_calendar_unref_event(event);
00125 } else if (!strcasecmp(state->tag, "propstat")) {
00126 state->in_propstat = 0;
00127 } else if (!strcasecmp(state->tag, "prop")) {
00128 state->in_prop = 0;
00129 }
00130 break;
00131
00132 default:
00133 return IKS_OK;
00134 }
00135
00136 return IKS_OK;
00137 }
00138
00139 static time_t mstime_to_time_t(char *mstime)
00140 {
00141 char *read, *write;
00142 icaltimetype tt;
00143 for (read = write = mstime; *read; read++) {
00144 if (*read == '.') {
00145 *write++ = 'Z';
00146 *write = '\0';
00147 break;
00148 }
00149 if (*read == '-' || *read == ':')
00150 continue;
00151 *write = *read;
00152 write++;
00153 }
00154
00155 tt = icaltime_from_string(mstime);
00156 return icaltime_as_timet(tt);
00157 }
00158
00159 static enum ast_calendar_busy_state msbusy_to_bs(const char *msbusy)
00160 {
00161 if (!strcasecmp(msbusy, "FREE")) {
00162 return AST_CALENDAR_BS_FREE;
00163 } else if (!strcasecmp(msbusy, "TENTATIVE")) {
00164 return AST_CALENDAR_BS_BUSY_TENTATIVE;
00165 } else {
00166 return AST_CALENDAR_BS_BUSY;
00167 }
00168 }
00169
00170 static int parse_cdata(void *data, char *value, size_t len)
00171 {
00172 char *str;
00173 struct xmlstate *state = data;
00174 struct ast_calendar_event *event = state->ptr;
00175
00176
00177 str = ast_skip_blanks(value);
00178
00179 if (str == value + len)
00180 return IKS_OK;
00181
00182 if (!(str = ast_calloc(1, len + 1))) {
00183 return IKS_NOMEM;
00184 }
00185 memcpy(str, value, len);
00186 if (!(state->in_response && state->in_propstat && state->in_prop)) {
00187 ast_free(str);
00188 return IKS_OK;
00189 }
00190
00191
00192 if (!strcasecmp(state->tag, "subject")) {
00193 ast_string_field_build(event, summary, "%s%s", event->summary, str);
00194 } else if (!strcasecmp(state->tag, "location")) {
00195 ast_string_field_build(event, location, "%s%s", event->location, str);
00196 } else if (!strcasecmp(state->tag, "uid")) {
00197 ast_string_field_build(event, uid, "%s%s", event->location, str);
00198 } else if (!strcasecmp(state->tag, "organizer")) {
00199 ast_string_field_build(event, organizer, "%s%s", event->organizer, str);
00200 } else if (!strcasecmp(state->tag, "textdescription")) {
00201 ast_string_field_build(event, description, "%s%s", event->description, str);
00202 } else if (!strcasecmp(state->tag, "dtstart")) {
00203 event->start = mstime_to_time_t(str);
00204 } else if (!strcasecmp(state->tag, "dtend")) {
00205 event->end = mstime_to_time_t(str);
00206 } else if (!strcasecmp(state->tag, "busystatus")) {
00207 event->busy_state = msbusy_to_bs(str);
00208 } else if (!strcasecmp(state->tag, "reminderoffset")) {
00209
00210
00211 event->alarm = event->start - atoi(str);
00212 }
00213
00214 ast_free(str);
00215 return IKS_OK;
00216 }
00217
00218 static void exchangecal_destructor(void *obj)
00219 {
00220 struct exchangecal_pvt *pvt = obj;
00221
00222 ast_debug(1, "Destroying pvt for Exchange calendar %s\n", pvt->owner->name);
00223 if (pvt->session) {
00224 ne_session_destroy(pvt->session);
00225 }
00226 ast_string_field_free_memory(pvt);
00227
00228 ao2_callback(pvt->events, OBJ_UNLINK | OBJ_NODATA | OBJ_MULTIPLE, NULL, NULL);
00229
00230 ao2_ref(pvt->events, -1);
00231 }
00232
00233 static void *unref_exchangecal(void *obj)
00234 {
00235 struct exchangecal_pvt *pvt = obj;
00236
00237 ao2_ref(pvt, -1);
00238 return NULL;
00239 }
00240
00241
00242 static struct ast_str *generate_exchange_uuid(struct ast_str *uid)
00243 {
00244 unsigned short val[8];
00245 int x;
00246
00247 for (x = 0; x < 8; x++) {
00248 val[x] = ast_random();
00249 }
00250 ast_str_set(&uid, 0, "%04x%04x-%04x-%04x-%04x-%04x%04x%04x", (unsigned)val[0],
00251 (unsigned)val[1], (unsigned)val[2], (unsigned)val[3], (unsigned)val[4],
00252 (unsigned)val[5], (unsigned)val[6], (unsigned)val[7]);
00253
00254 return uid;
00255 }
00256
00257 static int is_valid_uuid(struct ast_str *uid)
00258 {
00259 int i;
00260
00261 if (ast_str_strlen(uid) != 36) {
00262 return 0;
00263 }
00264
00265 for (i = 0; i < ast_str_strlen(uid); i++) {
00266 if (i == 8 || i == 13 || i == 18 || i == 23) {
00267 if (ast_str_buffer(uid)[i] != '-') {
00268 return 0;
00269 }
00270 } else if (!((ast_str_buffer(uid)[i] > 47 && ast_str_buffer(uid)[i] < 58) || (ast_str_buffer(uid)[i] > 96 && ast_str_buffer(uid)[i] < 103))) {
00271 return 0;
00272 }
00273 }
00274
00275 return 1;
00276 }
00277
00278 static struct ast_str *xml_encode_str(struct ast_str *dst, const char *src)
00279 {
00280 const char *tmp;
00281 char buf[7];
00282
00283 for (tmp = src; *tmp; tmp++) {
00284 switch (*tmp) {
00285 case '\"':
00286 strcpy(buf, """);
00287 break;
00288
00289 case '\'':
00290 strcpy(buf, "'");
00291 break;
00292
00293 case '&':
00294 strcpy(buf, "&");
00295 break;
00296
00297 case '<':
00298 strcpy(buf, "<");
00299 break;
00300
00301 case '>':
00302 strcpy(buf, ">");
00303 break;
00304
00305 default:
00306 sprintf(buf, "%c", *tmp);
00307 }
00308
00309 ast_str_append(&dst, 0, "%s", buf);
00310 }
00311
00312 return dst;
00313 }
00314
00315 static struct ast_str *epoch_to_exchange_time(struct ast_str *dst, time_t epoch)
00316 {
00317 icaltimezone *utc = icaltimezone_get_utc_timezone();
00318 icaltimetype tt = icaltime_from_timet_with_zone(epoch, 0, utc);
00319 char tmp[30];
00320 int i;
00321
00322 ast_copy_string(tmp, icaltime_as_ical_string(tt), sizeof(tmp));
00323 for (i = 0; tmp[i]; i++) {
00324 ast_str_append(&dst, 0, "%c", tmp[i]);
00325 if (i == 3 || i == 5)
00326 ast_str_append(&dst, 0, "%c", '-');
00327 if (i == 10 || i == 12)
00328 ast_str_append(&dst, 0, "%c", ':');
00329 if (i == 14)
00330 ast_str_append(&dst, 0, "%s", ".000");
00331 }
00332
00333 return dst;
00334 }
00335
00336 static struct ast_str *bs_to_exchange_bs(struct ast_str *dst, enum ast_calendar_busy_state bs)
00337 {
00338 switch (bs) {
00339 case AST_CALENDAR_BS_BUSY:
00340 ast_str_set(&dst, 0, "%s", "BUSY");
00341 break;
00342
00343 case AST_CALENDAR_BS_BUSY_TENTATIVE:
00344 ast_str_set(&dst, 0, "%s", "TENTATIVE");
00345 break;
00346
00347 default:
00348 ast_str_set(&dst, 0, "%s", "FREE");
00349 }
00350
00351 return dst;
00352 }
00353
00354 static int fetch_response_reader(void *data, const char *block, size_t len)
00355 {
00356 struct ast_str **response = data;
00357 unsigned char *tmp;
00358
00359 if (!(tmp = ast_malloc(len + 1))) {
00360 return -1;
00361 }
00362 memcpy(tmp, block, len);
00363 tmp[len] = '\0';
00364 ast_str_append(response, 0, "%s", tmp);
00365 ast_free(tmp);
00366
00367 return 0;
00368 }
00369
00370 static int auth_credentials(void *userdata, const char *realm, int attempts, char *username, char *secret)
00371 {
00372 struct exchangecal_pvt *pvt = userdata;
00373
00374 if (attempts > 1) {
00375 ast_log(LOG_WARNING, "Invalid username or password for Exchange calendar '%s'\n", pvt->owner->name);
00376 return -1;
00377 }
00378
00379 ne_strnzcpy(username, pvt->user, NE_ABUFSIZ);
00380 ne_strnzcpy(secret, pvt->secret, NE_ABUFSIZ);
00381
00382 return 0;
00383 }
00384
00385 static struct ast_str *exchangecal_request(struct exchangecal_pvt *pvt, const char *method, struct ast_str *req_body, struct ast_str *subdir)
00386 {
00387 struct ast_str *response;
00388 ne_request *req;
00389 int ret;
00390 char buf[1000];
00391
00392 if (!pvt) {
00393 ast_log(LOG_ERROR, "There is no private!\n");
00394 return NULL;
00395 }
00396
00397 if (!(response = ast_str_create(512))) {
00398 ast_log(LOG_ERROR, "Could not allocate memory for response.\n");
00399 return NULL;
00400 }
00401
00402 snprintf(buf, sizeof(buf), "%s%s", pvt->uri.path, subdir ? ast_str_buffer(subdir) : "");
00403
00404 req = ne_request_create(pvt->session, method, buf);
00405 ne_add_response_body_reader(req, ne_accept_2xx, fetch_response_reader, &response);
00406 ne_set_request_body_buffer(req, ast_str_buffer(req_body), ast_str_strlen(req_body));
00407 ne_add_request_header(req, "Content-type", "text/xml");
00408
00409 ret = ne_request_dispatch(req);
00410 ne_request_destroy(req);
00411
00412 if (ret != NE_OK || !ast_str_strlen(response)) {
00413 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));
00414 ast_free(response);
00415 return NULL;
00416 }
00417
00418 return response;
00419 }
00420
00421 static int exchangecal_write_event(struct ast_calendar_event *event)
00422 {
00423 struct ast_str *body = NULL, *response = NULL, *subdir = NULL;
00424 struct ast_str *uid = NULL, *summary = NULL, *description = NULL, *organizer = NULL,
00425 *location = NULL, *start = NULL, *end = NULL, *busystate = NULL;
00426 int ret = -1;
00427
00428 if (!event) {
00429 ast_log(LOG_WARNING, "No event passed!\n");
00430 return -1;
00431 }
00432
00433 if (!(event->start && event->end)) {
00434 ast_log(LOG_WARNING, "The event must contain a start and an end\n");
00435 return -1;
00436 }
00437 if (!(body = ast_str_create(512)) ||
00438 !(subdir = ast_str_create(32))) {
00439 ast_log(LOG_ERROR, "Could not allocate memory for request!\n");
00440 goto write_cleanup;
00441 }
00442
00443 if (!(uid = ast_str_create(32)) ||
00444 !(summary = ast_str_create(32)) ||
00445 !(description = ast_str_create(32)) ||
00446 !(organizer = ast_str_create(32)) ||
00447 !(location = ast_str_create(32)) ||
00448 !(start = ast_str_create(32)) ||
00449 !(end = ast_str_create(32)) ||
00450 !(busystate = ast_str_create(32))) {
00451 ast_log(LOG_ERROR, "Unable to allocate memory for request values\n");
00452 goto write_cleanup;
00453 }
00454
00455 if (ast_strlen_zero(event->uid)) {
00456 uid = generate_exchange_uuid(uid);
00457 } else {
00458 ast_str_set(&uid, 36, "%s", event->uid);
00459 }
00460
00461 if (!is_valid_uuid(uid)) {
00462 ast_log(LOG_WARNING, "An invalid uid was provided, you may leave this field blank to have one generated for you\n");
00463 goto write_cleanup;
00464 }
00465
00466 summary = xml_encode_str(summary, event->summary);
00467 description = xml_encode_str(description, event->description);
00468 organizer = xml_encode_str(organizer, event->organizer);
00469 location = xml_encode_str(location, event->location);
00470 start = epoch_to_exchange_time(start, event->start);
00471 end = epoch_to_exchange_time(end, event->end);
00472 busystate = bs_to_exchange_bs(busystate, event->busy_state);
00473
00474 ast_str_append(&body, 0,
00475 "<?xml version=\"1.0\"?>\n"
00476 "<a:propertyupdate\n"
00477 " xmlns:a=\"DAV:\"\n"
00478 " xmlns:e=\"http://schemas.microsoft.com/exchange/\"\n"
00479 " xmlns:mapi=\"http://schemas.microsoft.com/mapi/\"\n"
00480 " xmlns:mapit=\"http://schemas.microsoft.com/mapi/proptag/\"\n"
00481 " xmlns:x=\"xml:\" xmlns:cal=\"urn:schemas:calendar:\"\n"
00482 " xmlns:dt=\"uuid:%s/\"\n"
00483 " xmlns:header=\"urn:schemas:mailheader:\"\n"
00484 " xmlns:mail=\"urn:schemas:httpmail:\"\n"
00485 ">\n"
00486 " <a:set>\n"
00487 " <a:prop>\n"
00488 " <a:contentclass>urn:content-classes:appointment</a:contentclass>\n"
00489 " <e:outlookmessageclass>IPM.Appointment</e:outlookmessageclass>\n"
00490 " <mail:subject>%s</mail:subject>\n"
00491 " <mail:description>%s</mail:description>\n"
00492 " <header:to>%s</header:to>\n"
00493 " <cal:location>%s</cal:location>\n"
00494 " <cal:dtstart dt:dt=\"dateTime.tz\">%s</cal:dtstart>\n"
00495 " <cal:dtend dt:dt=\"dateTime.tz\">%s</cal:dtend>\n"
00496 " <cal:instancetype dt:dt=\"int\">0</cal:instancetype>\n"
00497 " <cal:busystatus>%s</cal:busystatus>\n"
00498 " <cal:meetingstatus>CONFIRMED</cal:meetingstatus>\n"
00499 " <cal:alldayevent dt:dt=\"boolean\">0</cal:alldayevent>\n"
00500 " <cal:responserequested dt:dt=\"boolean\">0</cal:responserequested>\n"
00501 " <mapi:finvited dt:dt=\"boolean\">1</mapi:finvited>\n"
00502 " </a:prop>\n"
00503 " </a:set>\n"
00504 "</a:propertyupdate>\n",
00505 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));
00506 ast_verb(0, "\n\n%s\n\n", ast_str_buffer(body));
00507 ast_str_set(&subdir, 0, "/Calendar/%s.eml", ast_str_buffer(uid));
00508
00509 response = exchangecal_request(event->owner->tech_pvt, "PROPPATCH", body, subdir);
00510
00511 ret = 0;
00512 write_cleanup:
00513 if (uid) {
00514 ast_free(uid);
00515 }
00516 if (summary) {
00517 ast_free(summary);
00518 }
00519 if (description) {
00520 ast_free(description);
00521 }
00522 if (organizer) {
00523 ast_free(organizer);
00524 }
00525 if (location) {
00526 ast_free(location);
00527 }
00528 if (start) {
00529 ast_free(start);
00530 }
00531 if (end) {
00532 ast_free(end);
00533 }
00534 if (busystate) {
00535 ast_free(busystate);
00536 }
00537 if (body) {
00538 ast_free(body);
00539 }
00540 if (response) {
00541 ast_free(response);
00542 }
00543 if (subdir) {
00544 ast_free(subdir);
00545 }
00546
00547 return ret;
00548 }
00549
00550
00551 static struct ast_str *exchangecal_get_events_between(struct exchangecal_pvt *pvt, time_t start_time, time_t end_time)
00552 {
00553 struct ast_str *body, *response;
00554 char start[80], end[80];
00555 struct timeval tv = {0,};
00556 struct ast_tm tm;
00557
00558 tv.tv_sec = start_time;
00559 ast_localtime(&tv, &tm, "UTC");
00560 ast_strftime(start, sizeof(start), "%Y/%m/%d %T", &tm);
00561
00562 tv.tv_sec = end_time;
00563 ast_localtime(&tv, &tm, "UTC");
00564 ast_strftime(end, sizeof(end), "%Y/%m/%d %T", &tm);
00565
00566 if (!(body = ast_str_create(512))) {
00567 ast_log(LOG_ERROR, "Could not allocate memory for body of request!\n");
00568 return NULL;
00569 }
00570
00571 ast_str_append(&body, 0,
00572 "<?xml version=\"1.0\"?>\n"
00573 "<g:searchrequest xmlns:g=\"DAV:\">\n"
00574 " <g:sql> SELECT \"urn:schemas:calendar:location\", \"urn:schemas:httpmail:subject\",\n"
00575 " \"urn:schemas:calendar:dtstart\", \"urn:schemas:calendar:dtend\",\n"
00576 " \"urn:schemas:calendar:busystatus\", \"urn:schemas:calendar:instancetype\",\n"
00577 " \"urn:schemas:calendar:uid\", \"urn:schemas:httpmail:textdescription\",\n"
00578 " \"urn:schemas:calendar:organizer\", \"urn:schemas:calendar:reminderoffset\"\n"
00579 " FROM Scope('SHALLOW TRAVERSAL OF \"%s/Calendar\"')\n"
00580 " WHERE NOT \"urn:schemas:calendar:instancetype\" = 1\n"
00581 " AND \"DAV:contentclass\" = 'urn:content-classes:appointment'\n"
00582 " AND NOT (\"urn:schemas:calendar:dtend\" < '%s'\n"
00583 " OR \"urn:schemas:calendar:dtstart\" > '%s')\n"
00584 " ORDER BY \"urn:schemas:calendar:dtstart\" ASC\n"
00585 " </g:sql>\n"
00586 "</g:searchrequest>\n", pvt->url, start, end);
00587
00588 ast_debug(5, "Request:\n%s\n", ast_str_buffer(body));
00589 response = exchangecal_request(pvt, "SEARCH", body, NULL);
00590 ast_debug(5, "Response:\n%s\n", ast_str_buffer(response));
00591 ast_free(body);
00592
00593 return response;
00594 }
00595
00596 static int update_exchangecal(struct exchangecal_pvt *pvt)
00597 {
00598 struct xmlstate state;
00599 struct timeval now = ast_tvnow();
00600 time_t start, end;
00601 struct ast_str *response;
00602 iksparser *p;
00603
00604 state.pvt = pvt;
00605 start = now.tv_sec;
00606 end = now.tv_sec + 60 * pvt->owner->timeframe;
00607 if (!(response = exchangecal_get_events_between(pvt, start, end))) {
00608 return -1;
00609 }
00610
00611 p = iks_sax_new(&state, parse_tag, parse_cdata);
00612 iks_parse(p, ast_str_buffer(response), ast_str_strlen(response), 1);
00613 ast_calendar_merge_events(pvt->owner, pvt->events);
00614 ast_free(response);
00615
00616 return 0;
00617 }
00618
00619 static void *exchangecal_load_calendar(void *void_data)
00620 {
00621 struct exchangecal_pvt *pvt;
00622 const struct ast_config *cfg;
00623 struct ast_variable *v;
00624 struct ast_calendar *cal = void_data;
00625 ast_mutex_t refreshlock;
00626
00627 if (!(cal && (cfg = ast_calendar_config_acquire()))) {
00628 ast_log(LOG_ERROR, "You must enable calendar support for res_exchangecal to load\n");
00629 return NULL;
00630 }
00631
00632 if (ao2_trylock(cal)) {
00633 if (cal->unloading) {
00634 ast_log(LOG_WARNING, "Unloading module, load_calendar cancelled.\n");
00635 } else {
00636 ast_log(LOG_WARNING, "Could not lock calendar, aborting!\n");
00637 }
00638 ast_calendar_config_release();
00639 return NULL;
00640 }
00641
00642 if (!(pvt = ao2_alloc(sizeof(*pvt), exchangecal_destructor))) {
00643 ast_log(LOG_ERROR, "Could not allocate exchangecal_pvt structure for calendar: %s\n", cal->name);
00644 ast_calendar_config_release();
00645 return NULL;
00646 }
00647
00648 pvt->owner = cal;
00649
00650 if (!(pvt->events = ast_calendar_event_container_alloc())) {
00651 ast_log(LOG_ERROR, "Could not allocate space for fetching events for calendar: %s\n", cal->name);
00652 pvt = unref_exchangecal(pvt);
00653 ao2_unlock(cal);
00654 ast_calendar_config_release();
00655 return NULL;
00656 }
00657
00658 if (ast_string_field_init(pvt, 32)) {
00659 ast_log(LOG_ERROR, "Couldn't allocate string field space for calendar: %s\n", cal->name);
00660 pvt = unref_exchangecal(pvt);
00661 ao2_unlock(cal);
00662 ast_calendar_config_release();
00663 return NULL;
00664 }
00665
00666 for (v = ast_variable_browse(cfg, cal->name); v; v = v->next) {
00667 if (!strcasecmp(v->name, "url")) {
00668 ast_string_field_set(pvt, url, v->value);
00669 } else if (!strcasecmp(v->name, "user")) {
00670 ast_string_field_set(pvt, user, v->value);
00671 } else if (!strcasecmp(v->name, "secret")) {
00672 ast_string_field_set(pvt, secret, v->value);
00673 }
00674 }
00675
00676 ast_calendar_config_release();
00677
00678 if (ast_strlen_zero(pvt->url)) {
00679 ast_log(LOG_WARNING, "No URL was specified for Exchange calendar '%s' - skipping.\n", cal->name);
00680 pvt = unref_exchangecal(pvt);
00681 ao2_unlock(cal);
00682 return NULL;
00683 }
00684
00685 if (ne_uri_parse(pvt->url, &pvt->uri) || pvt->uri.host == NULL || pvt->uri.path == NULL) {
00686 ast_log(LOG_WARNING, "Could not parse url '%s' for Exchange calendar '%s' - skipping.\n", pvt->url, cal->name);
00687 pvt = unref_exchangecal(pvt);
00688 ao2_unlock(cal);
00689 return NULL;
00690 }
00691
00692 if (pvt->uri.scheme == NULL) {
00693 pvt->uri.scheme = "http";
00694 }
00695
00696 if (pvt->uri.port == 0) {
00697 pvt->uri.port = ne_uri_defaultport(pvt->uri.scheme);
00698 }
00699
00700 pvt->session = ne_session_create(pvt->uri.scheme, pvt->uri.host, pvt->uri.port);
00701 ne_redirect_register(pvt->session);
00702 ne_set_server_auth(pvt->session, auth_credentials, pvt);
00703 if (!strcasecmp(pvt->uri.scheme, "https")) {
00704 ne_ssl_trust_default_ca(pvt->session);
00705 }
00706
00707 cal->tech_pvt = pvt;
00708
00709 ast_mutex_init(&refreshlock);
00710
00711
00712 update_exchangecal(pvt);
00713
00714 ao2_unlock(cal);
00715
00716
00717 for (;;) {
00718 struct timeval tv = ast_tvnow();
00719 struct timespec ts = {0,};
00720
00721 ts.tv_sec = tv.tv_sec + (60 * pvt->owner->refresh);
00722
00723 ast_mutex_lock(&refreshlock);
00724 while (!pvt->owner->unloading) {
00725 if (ast_cond_timedwait(&pvt->owner->unload, &refreshlock, &ts) == ETIMEDOUT) {
00726 break;
00727 }
00728 }
00729 ast_mutex_unlock(&refreshlock);
00730
00731 if (pvt->owner->unloading) {
00732 ast_debug(10, "Skipping refresh since we got a shutdown signal\n");
00733 return NULL;
00734 }
00735
00736 ast_debug(10, "Refreshing after %d minute timeout\n", pvt->owner->refresh);
00737
00738 update_exchangecal(pvt);
00739 }
00740
00741 return NULL;
00742 }
00743
00744 static int load_module(void)
00745 {
00746 ne_sock_init();
00747 if (ast_calendar_register(&exchangecal_tech)) {
00748 ne_sock_exit();
00749 return AST_MODULE_LOAD_DECLINE;
00750 }
00751
00752 return AST_MODULE_LOAD_SUCCESS;
00753 }
00754
00755 static int unload_module(void)
00756 {
00757 ast_calendar_unregister(&exchangecal_tech);
00758 ne_sock_exit();
00759 return 0;
00760 }
00761
00762 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Asterisk MS Exchange Calendar Integration",
00763 .load = load_module,
00764 .unload = unload_module,
00765 .load_pri = AST_MODPRI_DEVSTATE_PLUGIN,
00766 );