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00028 #include "asterisk.h"
00029
00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 300214 $")
00031
00032 #include <libical/ical.h>
00033 #include <ne_session.h>
00034 #include <ne_uri.h>
00035 #include <ne_request.h>
00036 #include <ne_auth.h>
00037 #include <ne_redirect.h>
00038 #include <iksemel.h>
00039
00040 #include "asterisk/module.h"
00041 #include "asterisk/calendar.h"
00042 #include "asterisk/lock.h"
00043 #include "asterisk/config.h"
00044 #include "asterisk/astobj2.h"
00045
00046 static void *exchangecal_load_calendar(void *data);
00047 static void *unref_exchangecal(void *obj);
00048 static int exchangecal_write_event(struct ast_calendar_event *event);
00049
00050 static struct ast_calendar_tech exchangecal_tech = {
00051 .type = "exchange",
00052 .description = "MS Exchange calendars",
00053 .module = AST_MODULE,
00054 .load_calendar = exchangecal_load_calendar,
00055 .unref_calendar = unref_exchangecal,
00056 .write_event = exchangecal_write_event,
00057 };
00058
00059 struct exchangecal_pvt {
00060 AST_DECLARE_STRING_FIELDS(
00061 AST_STRING_FIELD(url);
00062 AST_STRING_FIELD(user);
00063 AST_STRING_FIELD(secret);
00064 );
00065 struct ast_calendar *owner;
00066 ne_uri uri;
00067 ne_session *session;
00068 struct ao2_container *events;
00069 };
00070
00071 struct xmlstate {
00072 char tag[80];
00073 int in_response;
00074 int in_propstat;
00075 int in_prop;
00076 void *ptr;
00077 struct exchangecal_pvt *pvt;
00078 };
00079
00080 static int parse_tag(void *data, char *name, char **atts, int type)
00081 {
00082 struct xmlstate *state = data;
00083 char *tmp;
00084
00085 if ((tmp = strchr(name, ':'))) {
00086 tmp++;
00087 } else {
00088 return IKS_HOOK;
00089 }
00090
00091 ast_copy_string(state->tag, tmp, sizeof(state->tag));
00092
00093 switch (type) {
00094 case IKS_OPEN:
00095 if (!strcasecmp(state->tag, "response")) {
00096 struct ast_calendar_event *event;
00097
00098 state->in_response = 1;
00099 if (!(event = ast_calendar_event_alloc(state->pvt->owner))) {
00100 return IKS_NOMEM;
00101 }
00102 state->ptr = event;
00103 } else if (!strcasecmp(state->tag, "propstat")) {
00104 state->in_propstat = 1;
00105 } else if (!strcasecmp(state->tag, "prop")) {
00106 state->in_prop = 1;
00107 }
00108 break;
00109
00110 case IKS_CLOSE:
00111 if (!strcasecmp(state->tag, "response")) {
00112 struct ao2_container *events = state->pvt->events;
00113 struct ast_calendar_event *event = state->ptr;
00114
00115 state->in_response = 0;
00116 if (ast_strlen_zero(event->uid)) {
00117 ast_log(LOG_ERROR, "This event has no UID, something has gone wrong\n");
00118 event = ast_calendar_unref_event(event);
00119 return IKS_HOOK;
00120 }
00121 ao2_link(events, event);
00122 event = ast_calendar_unref_event(event);
00123 } else if (!strcasecmp(state->tag, "propstat")) {
00124 state->in_propstat = 0;
00125 } else if (!strcasecmp(state->tag, "prop")) {
00126 state->in_prop = 0;
00127 }
00128 break;
00129
00130 default:
00131 return IKS_OK;
00132 }
00133
00134 return IKS_OK;
00135 }
00136
00137 static time_t mstime_to_time_t(char *mstime)
00138 {
00139 char *read, *write;
00140 icaltimetype tt;
00141 for (read = write = mstime; *read; read++) {
00142 if (*read == '.') {
00143 *write++ = 'Z';
00144 *write = '\0';
00145 break;
00146 }
00147 if (*read == '-' || *read == ':')
00148 continue;
00149 *write = *read;
00150 write++;
00151 }
00152
00153 tt = icaltime_from_string(mstime);
00154 return icaltime_as_timet(tt);
00155 }
00156
00157 static enum ast_calendar_busy_state msbusy_to_bs(const char *msbusy)
00158 {
00159 if (!strcasecmp(msbusy, "FREE")) {
00160 return AST_CALENDAR_BS_FREE;
00161 } else if (!strcasecmp(msbusy, "TENTATIVE")) {
00162 return AST_CALENDAR_BS_BUSY_TENTATIVE;
00163 } else {
00164 return AST_CALENDAR_BS_BUSY;
00165 }
00166 }
00167
00168 static int parse_cdata(void *data, char *value, size_t len)
00169 {
00170 char *str;
00171 struct xmlstate *state = data;
00172 struct ast_calendar_event *event = state->ptr;
00173
00174
00175 str = ast_skip_blanks(value);
00176
00177 if (str == value + len)
00178 return IKS_OK;
00179
00180 if (!(str = ast_calloc(1, len + 1))) {
00181 return IKS_NOMEM;
00182 }
00183 memcpy(str, value, len);
00184 if (!(state->in_response && state->in_propstat && state->in_prop)) {
00185 ast_free(str);
00186 return IKS_OK;
00187 }
00188
00189
00190 if (!strcasecmp(state->tag, "subject")) {
00191 ast_string_field_build(event, summary, "%s%s", event->summary, str);
00192 } else if (!strcasecmp(state->tag, "location")) {
00193 ast_string_field_build(event, location, "%s%s", event->location, str);
00194 } else if (!strcasecmp(state->tag, "uid")) {
00195 ast_string_field_build(event, uid, "%s%s", event->location, str);
00196 } else if (!strcasecmp(state->tag, "organizer")) {
00197 ast_string_field_build(event, organizer, "%s%s", event->organizer, str);
00198 } else if (!strcasecmp(state->tag, "textdescription")) {
00199 ast_string_field_build(event, description, "%s%s", event->description, str);
00200 } else if (!strcasecmp(state->tag, "dtstart")) {
00201 event->start = mstime_to_time_t(str);
00202 } else if (!strcasecmp(state->tag, "dtend")) {
00203 event->end = mstime_to_time_t(str);
00204 } else if (!strcasecmp(state->tag, "busystatus")) {
00205 event->busy_state = msbusy_to_bs(str);
00206 } else if (!strcasecmp(state->tag, "reminderoffset")) {
00207
00208
00209 event->alarm = event->start - atoi(str);
00210 }
00211
00212 ast_free(str);
00213 return IKS_OK;
00214 }
00215
00216 static void exchangecal_destructor(void *obj)
00217 {
00218 struct exchangecal_pvt *pvt = obj;
00219
00220 ast_debug(1, "Destroying pvt for Exchange calendar %s\n", pvt->owner->name);
00221 if (pvt->session) {
00222 ne_session_destroy(pvt->session);
00223 }
00224 ast_string_field_free_memory(pvt);
00225
00226 ao2_callback(pvt->events, OBJ_UNLINK | OBJ_NODATA | OBJ_MULTIPLE, NULL, NULL);
00227
00228 ao2_ref(pvt->events, -1);
00229 }
00230
00231 static void *unref_exchangecal(void *obj)
00232 {
00233 struct exchangecal_pvt *pvt = obj;
00234
00235 ao2_ref(pvt, -1);
00236 return NULL;
00237 }
00238
00239
00240 static struct ast_str *generate_exchange_uuid(struct ast_str *uid)
00241 {
00242 unsigned short val[8];
00243 int x;
00244
00245 for (x = 0; x < 8; x++) {
00246 val[x] = ast_random();
00247 }
00248 ast_str_set(&uid, 0, "%04x%04x-%04x-%04x-%04x-%04x%04x%04x", val[0], val[1], val[2], val[3], val[4], val[5], val[6], val[7]);
00249
00250 return uid;
00251 }
00252
00253 static int is_valid_uuid(struct ast_str *uid)
00254 {
00255 int i;
00256
00257 if (ast_str_strlen(uid) != 36) {
00258 return 0;
00259 }
00260
00261 for (i = 0; i < ast_str_strlen(uid); i++) {
00262 if (i == 8 || i == 13 || i == 18 || i == 23) {
00263 if (ast_str_buffer(uid)[i] != '-') {
00264 return 0;
00265 }
00266 } 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))) {
00267 return 0;
00268 }
00269 }
00270
00271 return 1;
00272 }
00273
00274 static struct ast_str *xml_encode_str(struct ast_str *dst, const char *src)
00275 {
00276 const char *tmp;
00277 char buf[7];
00278
00279 for (tmp = src; *tmp; tmp++) {
00280 switch (*tmp) {
00281 case '\"':
00282 strcpy(buf, """);
00283 break;
00284
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 default:
00302 sprintf(buf, "%c", *tmp);
00303 }
00304
00305 ast_str_append(&dst, 0, "%s", buf);
00306 }
00307
00308 return dst;
00309 }
00310
00311 static struct ast_str *epoch_to_exchange_time(struct ast_str *dst, time_t epoch)
00312 {
00313 icaltimezone *utc = icaltimezone_get_utc_timezone();
00314 icaltimetype tt = icaltime_from_timet_with_zone(epoch, 0, utc);
00315 char tmp[30];
00316 int i;
00317
00318 ast_copy_string(tmp, icaltime_as_ical_string(tt), sizeof(tmp));
00319 for (i = 0; tmp[i]; i++) {
00320 ast_str_append(&dst, 0, "%c", tmp[i]);
00321 if (i == 3 || i == 5)
00322 ast_str_append(&dst, 0, "%c", '-');
00323 if (i == 10 || i == 12)
00324 ast_str_append(&dst, 0, "%c", ':');
00325 if (i == 14)
00326 ast_str_append(&dst, 0, "%s", ".000");
00327 }
00328
00329 return dst;
00330 }
00331
00332 static struct ast_str *bs_to_exchange_bs(struct ast_str *dst, enum ast_calendar_busy_state bs)
00333 {
00334 switch (bs) {
00335 case AST_CALENDAR_BS_BUSY:
00336 ast_str_set(&dst, 0, "%s", "BUSY");
00337 break;
00338
00339 case AST_CALENDAR_BS_BUSY_TENTATIVE:
00340 ast_str_set(&dst, 0, "%s", "TENTATIVE");
00341 break;
00342
00343 default:
00344 ast_str_set(&dst, 0, "%s", "FREE");
00345 }
00346
00347 return dst;
00348 }
00349
00350 static int fetch_response_reader(void *data, const char *block, size_t len)
00351 {
00352 struct ast_str **response = data;
00353 unsigned char *tmp;
00354
00355 if (!(tmp = ast_malloc(len + 1))) {
00356 return -1;
00357 }
00358 memcpy(tmp, block, len);
00359 tmp[len] = '\0';
00360 ast_str_append(response, 0, "%s", tmp);
00361 ast_free(tmp);
00362
00363 return 0;
00364 }
00365
00366 static int auth_credentials(void *userdata, const char *realm, int attempts, char *username, char *secret)
00367 {
00368 struct exchangecal_pvt *pvt = userdata;
00369
00370 if (attempts > 1) {
00371 ast_log(LOG_WARNING, "Invalid username or password for Exchange calendar '%s'\n", pvt->owner->name);
00372 return -1;
00373 }
00374
00375 ne_strnzcpy(username, pvt->user, NE_ABUFSIZ);
00376 ne_strnzcpy(secret, pvt->secret, NE_ABUFSIZ);
00377
00378 return 0;
00379 }
00380
00381 static struct ast_str *exchangecal_request(struct exchangecal_pvt *pvt, const char *method, struct ast_str *req_body, struct ast_str *subdir)
00382 {
00383 struct ast_str *response;
00384 ne_request *req;
00385 int ret;
00386 char buf[1000];
00387
00388 if (!pvt) {
00389 ast_log(LOG_ERROR, "There is no private!\n");
00390 return NULL;
00391 }
00392
00393 if (!(response = ast_str_create(512))) {
00394 ast_log(LOG_ERROR, "Could not allocate memory for response.\n");
00395 return NULL;
00396 }
00397
00398 snprintf(buf, sizeof(buf), "%s%s", pvt->uri.path, subdir ? ast_str_buffer(subdir) : "");
00399
00400 req = ne_request_create(pvt->session, method, buf);
00401 ne_add_response_body_reader(req, ne_accept_2xx, fetch_response_reader, &response);
00402 ne_set_request_body_buffer(req, ast_str_buffer(req_body), ast_str_strlen(req_body));
00403 ne_add_request_header(req, "Content-type", "text/xml");
00404
00405 ret = ne_request_dispatch(req);
00406 ne_request_destroy(req);
00407
00408 if (ret != NE_OK || !ast_str_strlen(response)) {
00409 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));
00410 ast_free(response);
00411 return NULL;
00412 }
00413
00414 return response;
00415 }
00416
00417 static int exchangecal_write_event(struct ast_calendar_event *event)
00418 {
00419 struct ast_str *body = NULL, *response = NULL, *subdir = NULL;
00420 struct ast_str *uid = NULL, *summary = NULL, *description = NULL, *organizer = NULL,
00421 *location = NULL, *start = NULL, *end = NULL, *busystate = NULL;
00422 int ret = -1;
00423
00424 if (!event) {
00425 ast_log(LOG_WARNING, "No event passed!\n");
00426 return -1;
00427 }
00428
00429 if (!(event->start && event->end)) {
00430 ast_log(LOG_WARNING, "The event must contain a start and an end\n");
00431 return -1;
00432 }
00433 if (!(body = ast_str_create(512)) ||
00434 !(subdir = ast_str_create(32)) ||
00435 !(response = ast_str_create(512))) {
00436 ast_log(LOG_ERROR, "Could not allocate memory for request and response!\n");
00437 goto write_cleanup;
00438 }
00439
00440 if (!(uid = ast_str_create(32)) ||
00441 !(summary = ast_str_create(32)) ||
00442 !(description = ast_str_create(32)) ||
00443 !(organizer = ast_str_create(32)) ||
00444 !(location = ast_str_create(32)) ||
00445 !(start = ast_str_create(32)) ||
00446 !(end = ast_str_create(32)) ||
00447 !(busystate = ast_str_create(32))) {
00448 ast_log(LOG_ERROR, "Unable to allocate memory for request values\n");
00449 goto write_cleanup;
00450 }
00451
00452 if (ast_strlen_zero(event->uid)) {
00453 uid = generate_exchange_uuid(uid);
00454 } else {
00455 ast_str_set(&uid, 36, "%s", event->uid);
00456 }
00457
00458 if (!is_valid_uuid(uid)) {
00459 ast_log(LOG_WARNING, "An invalid uid was provided, you may leave this field blank to have one generated for you\n");
00460 goto write_cleanup;
00461 }
00462
00463 summary = xml_encode_str(summary, event->summary);
00464 description = xml_encode_str(description, event->description);
00465 organizer = xml_encode_str(organizer, event->organizer);
00466 location = xml_encode_str(location, event->location);
00467 start = epoch_to_exchange_time(start, event->start);
00468 end = epoch_to_exchange_time(end, event->end);
00469 busystate = bs_to_exchange_bs(busystate, event->busy_state);
00470
00471 ast_str_append(&body, 0,
00472 "<?xml version=\"1.0\"?>\n"
00473 "<a:propertyupdate\n"
00474 " xmlns:a=\"DAV:\"\n"
00475 " xmlns:e=\"http://schemas.microsoft.com/exchange/\"\n"
00476 " xmlns:mapi=\"http://schemas.microsoft.com/mapi/\"\n"
00477 " xmlns:mapit=\"http://schemas.microsoft.com/mapi/proptag/\"\n"
00478 " xmlns:x=\"xml:\" xmlns:cal=\"urn:schemas:calendar:\"\n"
00479 " xmlns:dt=\"uuid:%s/\"\n"
00480 " xmlns:header=\"urn:schemas:mailheader:\"\n"
00481 " xmlns:mail=\"urn:schemas:httpmail:\"\n"
00482 ">\n"
00483 " <a:set>\n"
00484 " <a:prop>\n"
00485 " <a:contentclass>urn:content-classes:appointment</a:contentclass>\n"
00486 " <e:outlookmessageclass>IPM.Appointment</e:outlookmessageclass>\n"
00487 " <mail:subject>%s</mail:subject>\n"
00488 " <mail:description>%s</mail:description>\n"
00489 " <header:to>%s</header:to>\n"
00490 " <cal:location>%s</cal:location>\n"
00491 " <cal:dtstart dt:dt=\"dateTime.tz\">%s</cal:dtstart>\n"
00492 " <cal:dtend dt:dt=\"dateTime.tz\">%s</cal:dtend>\n"
00493 " <cal:instancetype dt:dt=\"int\">0</cal:instancetype>\n"
00494 " <cal:busystatus>%s</cal:busystatus>\n"
00495 " <cal:meetingstatus>CONFIRMED</cal:meetingstatus>\n"
00496 " <cal:alldayevent dt:dt=\"boolean\">0</cal:alldayevent>\n"
00497 " <cal:responserequested dt:dt=\"boolean\">0</cal:responserequested>\n"
00498 " <mapi:finvited dt:dt=\"boolean\">1</mapi:finvited>\n"
00499 " </a:prop>\n"
00500 " </a:set>\n"
00501 "</a:propertyupdate>\n",
00502 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));
00503 ast_verb(0, "\n\n%s\n\n", ast_str_buffer(body));
00504 ast_str_set(&subdir, 0, "/Calendar/%s.eml", ast_str_buffer(uid));
00505
00506 response = exchangecal_request(event->owner->tech_pvt, "PROPPATCH", body, subdir);
00507
00508 ret = 0;
00509 write_cleanup:
00510 if (uid) {
00511 ast_free(uid);
00512 }
00513 if (summary) {
00514 ast_free(summary);
00515 }
00516 if (description) {
00517 ast_free(description);
00518 }
00519 if (organizer) {
00520 ast_free(organizer);
00521 }
00522 if (location) {
00523 ast_free(location);
00524 }
00525 if (start) {
00526 ast_free(start);
00527 }
00528 if (end) {
00529 ast_free(end);
00530 }
00531 if (busystate) {
00532 ast_free(busystate);
00533 }
00534 if (body) {
00535 ast_free(body);
00536 }
00537 if (response) {
00538 ast_free(response);
00539 }
00540 if (subdir) {
00541 ast_free(subdir);
00542 }
00543
00544 return ret;
00545 }
00546
00547
00548 static struct ast_str *exchangecal_get_events_between(struct exchangecal_pvt *pvt, time_t start_time, time_t end_time)
00549 {
00550 struct ast_str *body, *response;
00551 char start[80], end[80];
00552 struct timeval tv = {0,};
00553 struct ast_tm tm;
00554
00555 tv.tv_sec = start_time;
00556 ast_localtime(&tv, &tm, "UTC");
00557 ast_strftime(start, sizeof(start), "%Y/%m/%d %T", &tm);
00558
00559 tv.tv_sec = end_time;
00560 ast_localtime(&tv, &tm, "UTC");
00561 ast_strftime(end, sizeof(end), "%Y/%m/%d %T", &tm);
00562
00563 if (!(body = ast_str_create(512))) {
00564 ast_log(LOG_ERROR, "Could not allocate memory for body of request!\n");
00565 return NULL;
00566 }
00567
00568 ast_str_append(&body, 0,
00569 "<?xml version=\"1.0\"?>\n"
00570 "<g:searchrequest xmlns:g=\"DAV:\">\n"
00571 " <g:sql> SELECT \"urn:schemas:calendar:location\", \"urn:schemas:httpmail:subject\",\n"
00572 " \"urn:schemas:calendar:dtstart\", \"urn:schemas:calendar:dtend\",\n"
00573 " \"urn:schemas:calendar:busystatus\", \"urn:schemas:calendar:instancetype\",\n"
00574 " \"urn:schemas:calendar:uid\", \"urn:schemas:httpmail:textdescription\",\n"
00575 " \"urn:schemas:calendar:organizer\", \"urn:schemas:calendar:reminderoffset\"\n"
00576 " FROM Scope('SHALLOW TRAVERSAL OF \"%s/Calendar\"')\n"
00577 " WHERE NOT \"urn:schemas:calendar:instancetype\" = 1\n"
00578 " AND \"DAV:contentclass\" = 'urn:content-classes:appointment'\n"
00579 " AND NOT (\"urn:schemas:calendar:dtend\" < '%s'\n"
00580 " OR \"urn:schemas:calendar:dtstart\" > '%s')\n"
00581 " ORDER BY \"urn:schemas:calendar:dtstart\" ASC\n"
00582 " </g:sql>\n"
00583 "</g:searchrequest>\n", pvt->url, start, end);
00584
00585 ast_debug(5, "Request:\n%s\n", ast_str_buffer(body));
00586 response = exchangecal_request(pvt, "SEARCH", body, NULL);
00587 ast_debug(5, "Response:\n%s\n", ast_str_buffer(response));
00588 ast_free(body);
00589
00590 return response;
00591 }
00592
00593 static int update_exchangecal(struct exchangecal_pvt *pvt)
00594 {
00595 struct xmlstate state;
00596 struct timeval now = ast_tvnow();
00597 time_t start, end;
00598 struct ast_str *response;
00599 iksparser *p;
00600
00601 state.pvt = pvt;
00602 start = now.tv_sec;
00603 end = now.tv_sec + 60 * pvt->owner->timeframe;
00604 if (!(response = exchangecal_get_events_between(pvt, start, end))) {
00605 return -1;
00606 }
00607
00608 p = iks_sax_new(&state, parse_tag, parse_cdata);
00609 iks_parse(p, ast_str_buffer(response), ast_str_strlen(response), 1);
00610 ast_calendar_merge_events(pvt->owner, pvt->events);
00611 ast_free(response);
00612
00613 return 0;
00614 }
00615
00616 static void *exchangecal_load_calendar(void *void_data)
00617 {
00618 struct exchangecal_pvt *pvt;
00619 const struct ast_config *cfg;
00620 struct ast_variable *v;
00621 struct ast_calendar *cal = void_data;
00622 ast_mutex_t refreshlock;
00623
00624 if (!(cal && (cfg = ast_calendar_config_acquire()))) {
00625 ast_log(LOG_ERROR, "You must enable calendar support for res_exchangecal to load\n");
00626 return NULL;
00627 }
00628
00629 if (ao2_trylock(cal)) {
00630 if (cal->unloading) {
00631 ast_log(LOG_WARNING, "Unloading module, load_calendar cancelled.\n");
00632 } else {
00633 ast_log(LOG_WARNING, "Could not lock calendar, aborting!\n");
00634 }
00635 ast_calendar_config_release();
00636 return NULL;
00637 }
00638
00639 if (!(pvt = ao2_alloc(sizeof(*pvt), exchangecal_destructor))) {
00640 ast_log(LOG_ERROR, "Could not allocate exchangecal_pvt structure for calendar: %s\n", cal->name);
00641 ast_calendar_config_release();
00642 return NULL;
00643 }
00644
00645 pvt->owner = cal;
00646
00647 if (!(pvt->events = ast_calendar_event_container_alloc())) {
00648 ast_log(LOG_ERROR, "Could not allocate space for fetching events for calendar: %s\n", cal->name);
00649 pvt = unref_exchangecal(pvt);
00650 ao2_unlock(cal);
00651 ast_calendar_config_release();
00652 return NULL;
00653 }
00654
00655 if (ast_string_field_init(pvt, 32)) {
00656 ast_log(LOG_ERROR, "Couldn't allocate string field space for calendar: %s\n", cal->name);
00657 pvt = unref_exchangecal(pvt);
00658 ao2_unlock(cal);
00659 ast_calendar_config_release();
00660 return NULL;
00661 }
00662
00663 for (v = ast_variable_browse(cfg, cal->name); v; v = v->next) {
00664 if (!strcasecmp(v->name, "url")) {
00665 ast_string_field_set(pvt, url, v->value);
00666 } else if (!strcasecmp(v->name, "user")) {
00667 ast_string_field_set(pvt, user, v->value);
00668 } else if (!strcasecmp(v->name, "secret")) {
00669 ast_string_field_set(pvt, secret, v->value);
00670 }
00671 }
00672
00673 ast_calendar_config_release();
00674
00675 if (ast_strlen_zero(pvt->url)) {
00676 ast_log(LOG_WARNING, "No URL was specified for Exchange calendar '%s' - skipping.\n", cal->name);
00677 pvt = unref_exchangecal(pvt);
00678 ao2_unlock(cal);
00679 return NULL;
00680 }
00681
00682 if (ne_uri_parse(pvt->url, &pvt->uri) || pvt->uri.host == NULL || pvt->uri.path == NULL) {
00683 ast_log(LOG_WARNING, "Could not parse url '%s' for Exchange calendar '%s' - skipping.\n", pvt->url, cal->name);
00684 pvt = unref_exchangecal(pvt);
00685 ao2_unlock(cal);
00686 return NULL;
00687 }
00688
00689 if (pvt->uri.scheme == NULL) {
00690 pvt->uri.scheme = "http";
00691 }
00692
00693 if (pvt->uri.port == 0) {
00694 pvt->uri.port = ne_uri_defaultport(pvt->uri.scheme);
00695 }
00696
00697 pvt->session = ne_session_create(pvt->uri.scheme, pvt->uri.host, pvt->uri.port);
00698 ne_redirect_register(pvt->session);
00699 ne_set_server_auth(pvt->session, auth_credentials, pvt);
00700 if (!strcasecmp(pvt->uri.scheme, "https")) {
00701 ne_ssl_trust_default_ca(pvt->session);
00702 }
00703
00704 cal->tech_pvt = pvt;
00705
00706 ast_mutex_init(&refreshlock);
00707
00708
00709 update_exchangecal(pvt);
00710
00711 ao2_unlock(cal);
00712
00713
00714 for (;;) {
00715 struct timeval tv = ast_tvnow();
00716 struct timespec ts = {0,};
00717
00718 ts.tv_sec = tv.tv_sec + (60 * pvt->owner->refresh);
00719
00720 ast_mutex_lock(&refreshlock);
00721 while (!pvt->owner->unloading) {
00722 if (ast_cond_timedwait(&pvt->owner->unload, &refreshlock, &ts) == ETIMEDOUT) {
00723 break;
00724 }
00725 }
00726 ast_mutex_unlock(&refreshlock);
00727
00728 if (pvt->owner->unloading) {
00729 ast_debug(10, "Skipping refresh since we got a shutdown signal\n");
00730 return NULL;
00731 }
00732
00733 ast_debug(10, "Refreshing after %d minute timeout\n", pvt->owner->refresh);
00734
00735 update_exchangecal(pvt);
00736 }
00737
00738 return NULL;
00739 }
00740
00741 static int load_module(void)
00742 {
00743 ne_sock_init();
00744 if (ast_calendar_register(&exchangecal_tech)) {
00745 ne_sock_exit();
00746 return AST_MODULE_LOAD_DECLINE;
00747 }
00748
00749 return AST_MODULE_LOAD_SUCCESS;
00750 }
00751
00752 static int unload_module(void)
00753 {
00754 ast_calendar_unregister(&exchangecal_tech);
00755 ne_sock_exit();
00756 return 0;
00757 }
00758
00759 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Asterisk MS Exchange Calendar Integration",
00760 .load = load_module,
00761 .unload = unload_module,
00762 .load_pri = AST_MODPRI_DEVSTATE_PLUGIN,
00763 );