webcit/calendar.c

   1 /*
   2  * $Id$
   3  *
   4  * Functions which handle calendar objects and their processing/display.
   5  */
   6
   7 #include "webcit.h"
   8 #include "webserver.h"
   9
  10
  11 /*
  12  * Process a calendar object.  At this point it's already been deserialized by cal_process_attachment()
  13  *
  14  * cal:                 the calendar object
  15  * recursion_level:     Number of times we've recursed into this function
  16  * msgnum:              Message number on the Citadel server
  17  * cal_partnum:         MIME part number within that message containing the calendar object
  18  */
  19 void cal_process_object(StrBuf *Target,
  20                         icalcomponent *cal,
  21                         int recursion_level,
  22                         long msgnum,
  23                         const char *cal_partnum)
  24 {
  25         icalcomponent *c;
  26         icalproperty *method = NULL;
  27         icalproperty_method the_method = ICAL_METHOD_NONE;
  28         icalproperty *p;
  29         struct icaltimetype t;
  30         time_t tt;
  31         char buf[256];
  32         char conflict_name[256];
  33         char conflict_message[256];
  34         int is_update = 0;
  35         char divname[32];
  36         static int divcount = 0;
  37
  38         sprintf(divname, "rsvp%04x", ++divcount);
  39
  40         /* Convert timezones to something easy to display.
  41          * It's safe to do this in memory because we're only changing it on the
  42          * display side -- when we tell the server to do something with the object,
  43          * the server will be working with its original copy in the database.
  44          */
  45         if ((cal) && (recursion_level == 0)) {
  46                 ical_dezonify(cal);
  47         }
  48
  49         /* Leading HTML for the display of this object */
  50         if (recursion_level == 0) {
  51                 StrBufAppendPrintf(Target, "<div class=\"mimepart\">\n");
  52         }
  53
  54         /* Look for a method */
  55         method = icalcomponent_get_first_property(cal, ICAL_METHOD_PROPERTY);
  56
  57         /* See what we need to do with this */
  58         if (method != NULL) {
  59                 char *title;
  60                 the_method = icalproperty_get_method(method);
  61
  62                 StrBufAppendPrintf(Target, "<div id=\"%s_title\">", divname);
  63                 StrBufAppendPrintf(Target, "<img src=\"static/calarea_48x.gif\">");
  64                 StrBufAppendPrintf(Target, "<span>");
  65                 switch(the_method) {
  66                 case ICAL_METHOD_REQUEST:
  67                         title = _("Meeting invitation");
  68                         break;
  69                 case ICAL_METHOD_REPLY:
  70                         title = _("Attendee's reply to your invitation");
  71                         break;
  72                 case ICAL_METHOD_PUBLISH:
  73                         title = _("Published event");
  74                         break;
  75                 default:
  76                         title = _("This is an unknown type of calendar item.");
  77                         break;
  78                 }
  79                 StrBufAppendPrintf(Target, "</span>");
  80
  81                 StrBufAppendPrintf(Target, "&nbsp;&nbsp;%s",title);
  82                 StrBufAppendPrintf(Target, "</div>");
  83         }
  84
  85         StrBufAppendPrintf(Target, "<dl>");
  86         p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
  87         if (p != NULL) {
  88                 StrBufAppendPrintf(Target, "<dt>");
  89                 StrBufAppendPrintf(Target, _("Summary:"));
  90                 StrBufAppendPrintf(Target, "</dt><dd>");
  91                 StrEscAppend(Target, NULL, (char *)icalproperty_get_comment(p), 0, 0);
  92                 StrBufAppendPrintf(Target, "</dd>\n");
  93         }
  94
  95         p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
  96         if (p != NULL) {
  97                 StrBufAppendPrintf(Target, "<dt>");
  98                 StrBufAppendPrintf(Target, _("Location:"));
  99                 StrBufAppendPrintf(Target, "</dt><dd>");
 100                 StrEscAppend(Target, NULL, (char *)icalproperty_get_comment(p), 0, 0);
 101                 StrBufAppendPrintf(Target, "</dd>\n");
 102         }
 103
 104         /*
 105          * Only show start/end times if we're actually looking at the VEVENT
 106          * component.  Otherwise it shows bogus dates for things like timezone.
 107          */
 108         if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
 109
 110                 p = icalcomponent_get_first_property(cal, ICAL_DTSTART_PROPERTY);
 111                 if (p != NULL) {
 112                         t = icalproperty_get_dtstart(p);
 113
 114                         if (t.is_date) {
 115                                 struct tm d_tm;
 116                                 char d_str[32];
 117                                 memset(&d_tm, 0, sizeof d_tm);
 118                                 d_tm.tm_year = t.year - 1900;
 119                                 d_tm.tm_mon = t.month - 1;
 120                                 d_tm.tm_mday = t.day;
 121                                 wc_strftime(d_str, sizeof d_str, "%x", &d_tm);
 122                                 StrBufAppendPrintf(Target, "<dt>");
 123                                 StrBufAppendPrintf(Target, _("Date:"));
 124                                 StrBufAppendPrintf(Target, "</dt><dd>%s</dd>", d_str);
 125                         }
 126                         else {
 127                                 tt = icaltime_as_timet(t);
 128                                 webcit_fmt_date(buf, 256, tt, DATEFMT_FULL);
 129                                 StrBufAppendPrintf(Target, "<dt>");
 130                                 StrBufAppendPrintf(Target, _("Starting date/time:"));
 131                                 StrBufAppendPrintf(Target, "</dt><dd>%s</dd>", buf);
 132                         }
 133                 }
 134
 135                 p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
 136                 if (p != NULL) {
 137                         t = icalproperty_get_dtend(p);
 138                         tt = icaltime_as_timet(t);
 139                         webcit_fmt_date(buf, 256, tt, DATEFMT_FULL);
 140                         StrBufAppendPrintf(Target, "<dt>");
 141                         StrBufAppendPrintf(Target, _("Ending date/time:"));
 142                         StrBufAppendPrintf(Target, "</dt><dd>%s</dd>", buf);
 143                 }
 144
 145         }
 146
 147         p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
 148         if (p != NULL) {
 149                 StrBufAppendPrintf(Target, "<dt>");
 150                 StrBufAppendPrintf(Target, _("Description:"));
 151                 StrBufAppendPrintf(Target, "</dt><dd>");
 152                 StrEscAppend(Target, NULL, (char *)icalproperty_get_comment(p), 0, 0);
 153                 StrBufAppendPrintf(Target, "</dd>\n");
 154         }
 155
 156         if (icalcomponent_get_first_property(cal, ICAL_RRULE_PROPERTY)) {
 157                 /* Unusual string syntax used here in order to re-use existing translations */
 158                 StrBufAppendPrintf(Target, "<dt>%s:</dt><dd>%s.</dd>\n",
 159                         _("Recurrence"),
 160                         _("This is a recurring event")
 161                 );
 162         }
 163
 164         /* If the component has attendees, iterate through them. */
 165         for (p = icalcomponent_get_first_property(cal, ICAL_ATTENDEE_PROPERTY);
 166              (p != NULL);
 167              p = icalcomponent_get_next_property(cal, ICAL_ATTENDEE_PROPERTY)) {
 168                 StrBufAppendPrintf(Target, "<dt>");
 169                 StrBufAppendPrintf(Target, _("Attendee:"));
 170                 StrBufAppendPrintf(Target, "</dt><dd>");
 171                 safestrncpy(buf, icalproperty_get_attendee(p), sizeof buf);
 172                 if (!strncasecmp(buf, "MAILTO:", 7)) {
 173
 174                         /** screen name or email address */
 175                         strcpy(buf, &buf[7]);
 176                         striplt(buf);
 177                         StrEscAppend(Target, NULL, buf, 0, 0);
 178                         StrBufAppendPrintf(Target, " ");
 179
 180                         /** participant status */
 181                         partstat_as_string(buf, p);
 182                         StrEscAppend(Target, NULL, buf, 0, 0);
 183                 }
 184                 StrBufAppendPrintf(Target, "</dd>\n");
 185         }
 186
 187         /* If the component has subcomponents, recurse through them. */
 188         for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
 189              (c != 0);
 190              c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
 191                 /* Recursively process subcomponent */
 192                 cal_process_object(Target, c, recursion_level+1, msgnum, cal_partnum);
 193         }
 194
 195         /* If this is a REQUEST, display conflicts and buttons */
 196         if (the_method == ICAL_METHOD_REQUEST) {
 197
 198                 /* Check for conflicts */
 199                 lprintf(9, "Checking server calendar for conflicts...\n");
 200                 serv_printf("ICAL conflicts|%ld|%s|", msgnum, cal_partnum);
 201                 serv_getln(buf, sizeof buf);
 202                 if (buf[0] == '1') {
 203                         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 204                                 extract_token(conflict_name, buf, 3, '|', sizeof conflict_name);
 205                                 is_update = extract_int(buf, 4);
 206
 207                                 if (is_update) {
 208                                         snprintf(conflict_message, sizeof conflict_message,
 209                                                  _("This is an update of '%s' which is already in your calendar."), conflict_name);
 210                                 }
 211                                 else {
 212                                         snprintf(conflict_message, sizeof conflict_message,
 213                                                  _("This event would conflict with '%s' which is already in your calendar."), conflict_name);
 214                                 }
 215
 216                                 StrBufAppendPrintf(Target, "<dt>%s",
 217                                         (is_update ?
 218                                          _("Update:") :
 219                                          _("CONFLICT:")
 220                                                 )
 221                                         );
 222                                 StrBufAppendPrintf(Target, "</dt><dd>");
 223                                 StrEscAppend(Target, NULL, conflict_message, 0, 0);
 224                                 StrBufAppendPrintf(Target, "</dd>\n");
 225                         }
 226                 }
 227                 lprintf(9, "...done.\n");
 228
 229                 StrBufAppendPrintf(Target, "</dl>");
 230
 231                 /* Display the Accept/Decline buttons */
 232                 StrBufAppendPrintf(Target, "<p id=\"%s_question\">"
 233                         "%s "
 234                         "&nbsp;&nbsp;&nbsp;<span class=\"button_link\"> "
 235                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Accept');\">%s</a>"
 236                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 237                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Tentative');\">%s</a>"
 238                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 239                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Decline');\">%s</a>"
 240                         "</span></p>\n",
 241                         divname,
 242                         _("How would you like to respond to this invitation?"),
 243                         divname, divname, msgnum, cal_partnum, _("Accept"),
 244                         divname, divname, msgnum, cal_partnum, _("Tentative"),
 245                         divname, divname, msgnum, cal_partnum, _("Decline")
 246                         );
 247
 248         }
 249
 250         /* If this is a REPLY, display update button */
 251         if (the_method == ICAL_METHOD_REPLY) {
 252
 253                 /* Display the update buttons */
 254                 StrBufAppendPrintf(Target, "<p id=\"%s_question\" >"
 255                         "%s "
 256                         "&nbsp;&nbsp;&nbsp;<span class=\"button_link\"> "
 257                         "<a href=\"javascript:HandleRSVP('%s_question','%s_title','%ld','%s','Update');\">%s</a>"
 258                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 259                         "<a href=\"javascript:HandleRSVP('%s_question','%s_title','%ld','%s','Ignore');\">%s</a>"
 260                         "</span></p>\n",
 261                         divname,
 262                         _("Click <i>Update</i> to accept this reply and update your calendar."),
 263                         divname, divname, msgnum, cal_partnum, _("Update"),
 264                         divname, divname, msgnum, cal_partnum, _("Ignore")
 265                         );
 266
 267         }
 268
 269         /* Trailing HTML for the display of this object */
 270         if (recursion_level == 0) {
 271                 StrBufAppendPrintf(Target, "<p>&nbsp;</p></div>\n");
 272         }
 273 }
 274
 275
 276 /*
 277  * Deserialize a calendar object in a message so it can be displayed.
 278  */
 279 void cal_process_attachment(wc_mime_attachment *Mime)
 280 {
 281         icalcomponent *cal;
 282
 283         cal = icalcomponent_new_from_string(ChrPtr(Mime->Data));
 284         FlushStrBuf(Mime->Data);
 285         if (cal == NULL) {
 286                 StrBufAppendPrintf(Mime->Data, _("There was an error parsing this calendar item."));
 287                 StrBufAppendPrintf(Mime->Data, "<br />\n");
 288                 return;
 289         }
 290
 291         cal_process_object(Mime->Data, cal, 0, Mime->msgnum, ChrPtr(Mime->PartNum));
 292
 293         /* Free the memory we obtained from libical's constructor */
 294         icalcomponent_free(cal);
 295 }
 296
 297
 298
 299
 300 /*
 301  * Respond to a meeting request - accept/decline meeting
 302  */
 303 void respond_to_request(void)
 304 {
 305         char buf[1024];
 306
 307         begin_ajax_response();
 308
 309         serv_printf("ICAL respond|%s|%s|%s|",
 310                 bstr("msgnum"),
 311                 bstr("cal_partnum"),
 312                 bstr("sc")
 313         );
 314         serv_getln(buf, sizeof buf);
 315
 316         if (buf[0] == '2') {
 317                 wprintf("<img src=\"static/calarea_48x.gif\"><span>");
 318                 if (!strcasecmp(bstr("sc"), "accept")) {
 319                         wprintf(_("You have accepted this meeting invitation.  "
 320                                 "It has been entered into your calendar.")
 321                         );
 322                 } else if (!strcasecmp(bstr("sc"), "tentative")) {
 323                         wprintf(_("You have tentatively accepted this meeting invitation.  "
 324                                 "It has been 'pencilled in' to your calendar.")
 325                         );
 326                 } else if (!strcasecmp(bstr("sc"), "decline")) {
 327                         wprintf(_("You have declined this meeting invitation.  "
 328                                   "It has <b>not</b> been entered into your calendar.")
 329                                 );
 330                 }
 331                 wprintf(" ");
 332                 wprintf(_("A reply has been sent to the meeting organizer."));
 333                 wprintf("</span>");
 334         } else {
 335                 wprintf("<img align=\"center\" src=\"static/error.gif\"><span>");
 336                 wprintf("%s\n", &buf[4]);
 337                 wprintf("</span>");
 338         }
 339
 340         end_ajax_response();
 341 }
 342
 343
 344
 345 /*
 346  * Handle an incoming RSVP
 347  */
 348 void handle_rsvp(void)
 349 {
 350         char buf[1024];
 351
 352         begin_ajax_response();
 353
 354         serv_printf("ICAL handle_rsvp|%s|%s|%s|",
 355                 bstr("msgnum"),
 356                 bstr("cal_partnum"),
 357                 bstr("sc")
 358         );
 359         serv_getln(buf, sizeof buf);
 360
 361         if (buf[0] == '2') {
 362                 wprintf("<img src=\"static/calarea_48x.gif\"><span>");
 363                 if (!strcasecmp(bstr("sc"), "update")) {
 364                         wprintf(_("Your calendar has been updated to reflect this RSVP."));
 365                 } else if (!strcasecmp(bstr("sc"), "ignore")) {
 366                         wprintf(_("You have chosen to ignore this RSVP. "
 367                                   "Your calendar has <b>not</b> been updated.")
 368                                 );
 369                 }
 370                 wprintf("</span>");
 371         } else {
 372                 wprintf("<img src=\"static/error.gif\"><span> %s\n", &buf[4]);
 373                 wprintf("</span>");
 374         }
 375
 376         end_ajax_response();
 377 }
 378
 379
 380
 381
 382 /*
 383  * free memory allocated using libical
 384  */
 385 void delete_cal(void *vCal)
 386 {
 387         disp_cal *Cal = (disp_cal*) vCal;
 388         icalcomponent_free(Cal->cal);
 389         free(Cal->from);
 390         free(Cal);
 391 }
 392
 393 /*
 394  * This is the meat-and-bones of the first part of our two-phase calendar display.
 395  * As we encounter calendar items in messages being read from the server, we break out
 396  * any iCalendar objects and store them in a hash table.  Later on, the second phase will
 397  * use this hash table to render the calendar for display.
 398  */
 399 void display_individual_cal(icalcomponent *cal, long msgnum, char *from, int unread, struct calview *calv)
 400 {
 401         icalproperty *ps = NULL;
 402         struct icaltimetype dtstart, dtend;
 403         struct icaldurationtype dur;
 404         wcsession *WCC = WC;
 405         disp_cal *Cal;
 406         size_t len;
 407         time_t final_recurrence = 0;
 408         icalcomponent *cptr = NULL;
 409
 410         /* recur variables */
 411         icalproperty *rrule = NULL;
 412         struct icalrecurrencetype recur;
 413         icalrecur_iterator *ritr = NULL;
 414         struct icaltimetype next;
 415         int num_recur = 0;
 416         int stop_rr = 0;
 417
 418         dtstart = icaltime_null_time();
 419         dtend = icaltime_null_time();
 420
 421         if (WCC->disp_cal_items == NULL)
 422                 WCC->disp_cal_items = NewHash(0, Flathash);
 423
 424         /* Note: anything we do here, we also have to do below for the recurrences. */
 425         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 426         memset(Cal, 0, sizeof(disp_cal));
 427         Cal->cal = icalcomponent_new_clone(cal);
 428
 429         /* Dezonify and decapsulate at the very last moment */
 430         /* lprintf(9, "INITIAL: %s\n", icaltime_as_ical_string(icalproperty_get_dtstart(
 431                 icalcomponent_get_first_property(icalcomponent_get_first_component(
 432                 Cal->cal, ICAL_VEVENT_COMPONENT), ICAL_DTSTART_PROPERTY)))
 433         ); */
 434         ical_dezonify(Cal->cal);
 435         if (icalcomponent_isa(Cal->cal) != ICAL_VEVENT_COMPONENT) {
 436                 cptr = icalcomponent_get_first_component(Cal->cal, ICAL_VEVENT_COMPONENT);
 437                 if (cptr) {
 438                         cptr = icalcomponent_new_clone(cptr);
 439                         icalcomponent_free(Cal->cal);
 440                         Cal->cal = cptr;
 441                 }
 442         }
 443
 444         Cal->unread = unread;
 445         len = strlen(from);
 446         Cal->from = (char*)malloc(len+ 1);
 447         memcpy(Cal->from, from, len + 1);
 448         Cal->cal_msgnum = msgnum;
 449
 450         /* Precalculate the starting date and time of this event, and store it in our top-level
 451          * structure.  Later, when we are rendering the calendar, we can just peek at these values
 452          * without having to break apart every calendar item.
 453          */
 454         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 455         if (ps != NULL) {
 456                 dtstart = icalproperty_get_dtstart(ps);
 457                 Cal->event_start = icaltime_as_timet(dtstart);
 458         }
 459
 460         /* Do the same for the ending date and time.  It makes the day view much easier to render. */
 461         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 462         if (ps != NULL) {
 463                 dtend = icalproperty_get_dtend(ps);
 464                 Cal->event_end = icaltime_as_timet(dtend);
 465         }
 466
 467         /* Store it in the hash list. */
 468         Put(WCC->disp_cal_items,
 469             (char*) &Cal->event_start,
 470             sizeof(Cal->event_start),
 471             Cal,
 472             delete_cal);
 473
 474         /****************************** handle recurring events ******************************/
 475
 476         if (icaltime_is_null_time(dtstart)) return;     /* Can't recur without a start time */
 477
 478         if (!icaltime_is_null_time(dtend)) {            /* Need duration for recurrences */
 479                 dur = icaltime_subtract(dtend, dtstart);
 480         }
 481
 482         /*
 483          * Just let libical iterate the recurrence, and keep looping back to the top of this function,
 484          * adding new hash entries that all point back to the same msgnum, until either the iteration
 485          * stops or some outer bound is reached.  The display code will automatically do the Right Thing.
 486          */
 487         cptr = cal;
 488         if (icalcomponent_isa(cptr) != ICAL_VEVENT_COMPONENT) {
 489                 cptr = icalcomponent_get_first_component(cptr, ICAL_VEVENT_COMPONENT);
 490         }
 491         if (!cptr) return;
 492         ps = icalcomponent_get_first_property(cptr, ICAL_DTSTART_PROPERTY);
 493         if (ps == NULL) return;
 494         dtstart = icalproperty_get_dtstart(ps);
 495         rrule = icalcomponent_get_first_property(cptr, ICAL_RRULE_PROPERTY);
 496         if (!rrule) return;
 497         recur = icalproperty_get_rrule(rrule);
 498         ritr = icalrecur_iterator_new(recur, dtstart);
 499         if (!ritr) return;
 500
 501         while (next = icalrecur_iterator_next(ritr), ((!icaltime_is_null_time(next))&&(!stop_rr)) ) {
 502                 ++num_recur;
 503                 if (num_recur > 1) {            /* Skip the first one.  We already did it at the root. */
 504                         icalcomponent *cptr;
 505                         /* lprintf(9, "REPEATS: %s\n", icaltime_as_ical_string(next)); */
 506
 507                         /* Note: anything we do here, we also have to do above for the root event. */
 508                         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 509                         memset(Cal, 0, sizeof(disp_cal));
 510                         Cal->cal = icalcomponent_new_clone(cal);
 511                         Cal->unread = unread;
 512                         len = strlen(from);
 513                         Cal->from = (char*)malloc(len+ 1);
 514                         memcpy(Cal->from, from, len + 1);
 515                         Cal->cal_msgnum = msgnum;
 516
 517                         if (icalcomponent_isa(Cal->cal) == ICAL_VEVENT_COMPONENT) {
 518                                 cptr = Cal->cal;
 519                         }
 520                         else {
 521                                 cptr = icalcomponent_get_first_component(Cal->cal, ICAL_VEVENT_COMPONENT);
 522                         }
 523                         if (cptr) {
 524                                 ps = icalcomponent_get_first_property(cptr, ICAL_DTSTART_PROPERTY);
 525                                 if (ps != NULL) {
 526                                         icalcomponent_remove_property(cptr, ps);
 527                                         ps = icalproperty_new_dtstart(next);
 528                                         icalcomponent_add_property(cptr, ps);
 529
 530                                         Cal->event_start = icaltime_as_timet(next);
 531                                         final_recurrence = Cal->event_start;
 532                                 }
 533
 534                                 ps = icalcomponent_get_first_property(cptr, ICAL_DTEND_PROPERTY);
 535                                 if (ps != NULL) {
 536                                         icalcomponent_remove_property(cptr, ps);
 537
 538                                         /* Make a new dtend */
 539                                         ps = icalproperty_new_dtend(icaltime_add(next, dur));
 540
 541                                         /* and stick it somewhere */
 542                                         icalcomponent_add_property(cptr, ps);
 543                                 }
 544
 545                         }
 546
 547                         /* Dezonify and decapsulate at the very last moment */
 548                         ical_dezonify(Cal->cal);
 549                         if (icalcomponent_isa(Cal->cal) != ICAL_VEVENT_COMPONENT) {
 550                                 cptr = icalcomponent_get_first_component(Cal->cal, ICAL_VEVENT_COMPONENT);
 551                                 if (cptr) {
 552                                         cptr = icalcomponent_new_clone(cptr);
 553                                         icalcomponent_free(Cal->cal);
 554                                         Cal->cal = cptr;
 555                                 }
 556                         }
 557
 558                         if ( (Cal->event_start > calv->lower_bound)
 559                            && (Cal->event_start < calv->upper_bound) ) {
 560                                 Put(WCC->disp_cal_items,
 561                                         (char*) &Cal->event_start,
 562                                         sizeof(Cal->event_start),
 563                                         Cal,
 564                                         delete_cal
 565                                 );
 566                         }
 567                         else {
 568                                 delete_cal(Cal);
 569                         }
 570
 571                         /* If an upper bound is set, stop when we go out of scope */
 572                         if (final_recurrence > calv->upper_bound) stop_rr = 1;
 573                 }
 574         }
 575         icalrecur_iterator_free(ritr);
 576         /* lprintf(9, "Performed %d recurrences; final one is %s", num_recur, ctime(&final_recurrence)); */
 577
 578 }
 579
 580
 581
 582 /*
 583  * Display a task by itself (for editing)
 584  */
 585 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum, char *from,
 586                         int unread, struct calview *calv)
 587 {
 588         icalcomponent *vtodo;
 589         icalproperty *p;
 590         struct icaltimetype IcalTime;
 591         time_t now;
 592         int created_new_vtodo = 0;
 593         icalproperty_status todoStatus;
 594
 595         now = time(NULL);
 596
 597         if (supplied_vtodo != NULL) {
 598                 vtodo = supplied_vtodo;
 599
 600                 /*
 601                  * It's safe to convert to UTC here because there are no recurrences to worry about.
 602                  */
 603                 ical_dezonify(vtodo);
 604
 605                 /*
 606                  * If we're looking at a fully encapsulated VCALENDAR
 607                  * rather than a VTODO component, attempt to use the first
 608                  * relevant VTODO subcomponent.  If there is none, the
 609                  * NULL returned by icalcomponent_get_first_component() will
 610                  * tell the next iteration of this function to create a
 611                  * new one.
 612                  */
 613                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 614                         display_edit_individual_task(
 615                                 icalcomponent_get_first_component(
 616                                         vtodo, ICAL_VTODO_COMPONENT
 617                                         ),
 618                                 msgnum, from, unread, calv
 619                                 );
 620                         return;
 621                 }
 622         }
 623         else {
 624                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 625                 created_new_vtodo = 1;
 626         }
 627
 628         /* TODO: Can we take all this and move it into a template?       */
 629         output_headers(1, 1, 1, 0, 0, 0);
 630         wprintf("<!-- start task edit form -->");
 631         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 632         /* Get summary early for title */
 633         wprintf("<div class=\"box\">\n");
 634         wprintf("<div class=\"boxlabel\">");
 635         wprintf(_("Edit task"));
 636         wprintf("- ");
 637         if (p != NULL) {
 638                 escputs((char *)icalproperty_get_comment(p));
 639         }
 640         wprintf("</div>");
 641
 642         wprintf("<div class=\"boxcontent\">\n");
 643         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 644         wprintf("<div style=\"display: none;\">\n       ");
 645         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 646         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n", msgnum);
 647         wprintf("<INPUT TYPE=\"hidden\" NAME=\"return_to_summary\" VALUE=\"%d\">\n",
 648                 ibstr("return_to_summary"));
 649         wprintf("</div>");
 650         wprintf("<table class=\"calendar_background\"><tr><td>");
 651         wprintf("<TABLE STYLE=\"border: none;\">\n");
 652
 653         wprintf("<TR><TD>");
 654         wprintf(_("Summary:"));
 655         wprintf("</TD><TD>"
 656                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 657                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 658         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 659         if (p != NULL) {
 660                 escputs((char *)icalproperty_get_comment(p));
 661         }
 662         wprintf("\"></TD></TR>\n");
 663
 664         wprintf("<TR><TD>");
 665         wprintf(_("Start date:"));
 666         wprintf("</TD><TD>");
 667         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 668         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodtstart\" ID=\"nodtstart\" VALUE=\"NODTSTART\" ");
 669         if (p == NULL) {
 670                 wprintf("CHECKED=\"CHECKED\"");
 671         }
 672         wprintf(">");
 673         wprintf(_("No date"));
 674
 675         wprintf(" ");
 676         wprintf("<span ID=\"dtstart_date\">");
 677         wprintf(_("or"));
 678         wprintf(" ");
 679         if (p != NULL) {
 680                 IcalTime = icalproperty_get_dtstart(p);
 681         }
 682         else
 683                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 684         display_icaltimetype_as_webform(&IcalTime, "dtstart", 0);
 685
 686         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"dtstart_time_assoc\" ID=\"dtstart_time_assoc\" VALUE=\"yes\"");
 687         if (!IcalTime.is_date) {
 688                 wprintf("CHECKED=\"CHECKED\"");
 689         }
 690         wprintf(">");
 691         wprintf(_("Time associated"));
 692         wprintf("</span></TD></TR>\n");
 693
 694         wprintf("<TR><TD>");
 695         wprintf(_("Due date:"));
 696         wprintf("</TD><TD>");
 697         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 698         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodue\" ID=\"nodue\" VALUE=\"NODUE\"");
 699         if (p == NULL) {
 700                 wprintf("CHECKED=\"CHECKED\"");
 701         }
 702         wprintf(">");
 703         wprintf(_("No date"));
 704         wprintf(" ");
 705         wprintf("<span ID=\"due_date\">\n");
 706         wprintf(_("or"));
 707         wprintf(" ");
 708         if (p != NULL) {
 709                 IcalTime = icalproperty_get_due(p);
 710         }
 711         else
 712                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 713         display_icaltimetype_as_webform(&IcalTime, "due", 0);
 714
 715         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"due_time_assoc\" ID=\"due_time_assoc\" VALUE=\"yes\"");
 716         if (!IcalTime.is_date) {
 717                 wprintf("CHECKED=\"CHECKED\"");
 718         }
 719         wprintf(">");
 720         wprintf(_("Time associated"));
 721         wprintf("</span></TD></TR>\n");
 722         todoStatus = icalcomponent_get_status(vtodo);
 723         wprintf("<TR><TD>\n");
 724         wprintf(_("Completed:"));
 725         wprintf("</TD><TD>");
 726         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"status\" VALUE=\"COMPLETED\"");
 727         if (todoStatus == ICAL_STATUS_COMPLETED) {
 728                 wprintf(" CHECKED=\"CHECKED\"");
 729         }
 730         wprintf(" >");
 731         wprintf("</TD></TR>");
 732         /* start category field */
 733         p = icalcomponent_get_first_property(vtodo, ICAL_CATEGORIES_PROPERTY);
 734         wprintf("<TR><TD>");
 735         wprintf(_("Category:"));
 736         wprintf("</TD><TD>");
 737         wprintf("<INPUT TYPE=\"text\" NAME=\"category\" MAXLENGTH=\"32\" SIZE=\"32\" VALUE=\"");
 738         if (p != NULL) {
 739                 escputs((char *)icalproperty_get_categories(p));
 740         }
 741         wprintf("\">");
 742         wprintf("</TD></TR>\n   ");
 743         /* end category field */
 744         wprintf("<TR><TD>");
 745         wprintf(_("Description:"));
 746         wprintf("</TD><TD>");
 747         wprintf("<TEXTAREA NAME=\"description\" "
 748                 "ROWS=\"10\" COLS=\"80\">\n"
 749                 );
 750         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 751         if (p != NULL) {
 752                 escputs((char *)icalproperty_get_comment(p));
 753         }
 754         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 755
 756         wprintf("<SPAN STYLE=\"text-align: center;\">"
 757                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 758                 "&nbsp;&nbsp;"
 759                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 760                 "&nbsp;&nbsp;"
 761                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 762                 "</SPAN>\n",
 763                 _("Save"),
 764                 _("Delete"),
 765                 _("Cancel")
 766                 );
 767         wprintf("</td></tr></table>");
 768         wprintf("</FORM>\n");
 769         wprintf("</div></div></div>\n");
 770         wprintf("<!-- end task edit form -->");
 771         wDumpContent(1);
 772
 773         if (created_new_vtodo) {
 774                 icalcomponent_free(vtodo);
 775         }
 776 }
 777
 778 /*
 779  * Save an edited task
 780  *
 781  * supplied_vtodo       the task to save
 782  * msgnum               number of the mesage in our db
 783  */
 784 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum, char* from, int unread,
 785                                 struct calview *calv)
 786 {
 787         char buf[SIZ];
 788         int delete_existing = 0;
 789         icalproperty *prop;
 790         icalcomponent *vtodo, *encaps;
 791         int created_new_vtodo = 0;
 792         int i;
 793         int sequence = 0;
 794         struct icaltimetype t;
 795
 796         if (supplied_vtodo != NULL) {
 797                 vtodo = supplied_vtodo;
 798                 /**
 799                  * If we're looking at a fully encapsulated VCALENDAR
 800                  * rather than a VTODO component, attempt to use the first
 801                  * relevant VTODO subcomponent.  If there is none, the
 802                  * NULL returned by icalcomponent_get_first_component() will
 803                  * tell the next iteration of this function to create a
 804                  * new one.
 805                  */
 806                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 807                         save_individual_task(
 808                                 icalcomponent_get_first_component(
 809                                         vtodo, ICAL_VTODO_COMPONENT),
 810                                 msgnum, from, unread, calv
 811                                 );
 812                         return;
 813                 }
 814         }
 815         else {
 816                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 817                 created_new_vtodo = 1;
 818         }
 819
 820         if (havebstr("save_button")) {
 821
 822                 /** Replace values in the component with ones from the form */
 823
 824                 while (prop = icalcomponent_get_first_property(vtodo,
 825                                                                ICAL_SUMMARY_PROPERTY), prop != NULL) {
 826                         icalcomponent_remove_property(vtodo, prop);
 827                         icalproperty_free(prop);
 828                 }
 829                 if (havebstr("summary")) {
 830
 831                         icalcomponent_add_property(vtodo,
 832                                                    icalproperty_new_summary(bstr("summary")));
 833                 } else {
 834                         icalcomponent_add_property(vtodo,
 835                                                    icalproperty_new_summary(_("Untitled Task")));
 836                 }
 837
 838                 while (prop = icalcomponent_get_first_property(vtodo,
 839                                                                ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 840                         icalcomponent_remove_property(vtodo, prop);
 841                         icalproperty_free(prop);
 842                 }
 843                 if (havebstr("description")) {
 844                         icalcomponent_add_property(vtodo,
 845                                                    icalproperty_new_description(bstr("description")));
 846                 }
 847
 848                 while (prop = icalcomponent_get_first_property(vtodo,
 849                                                                ICAL_DTSTART_PROPERTY), prop != NULL) {
 850                         icalcomponent_remove_property(vtodo, prop);
 851                         icalproperty_free(prop);
 852                 }
 853                 if (IsEmptyStr(bstr("nodtstart"))) {
 854                         if (yesbstr("dtstart_time")) {
 855                                 icaltime_from_webform(&t, "dtstart");
 856                         }
 857                         else {
 858                                 icaltime_from_webform_dateonly(&t, "dtstart");
 859                         }
 860                         icalcomponent_add_property(vtodo,
 861                                                    icalproperty_new_dtstart(t)
 862                                 );
 863                 }
 864                 while(prop = icalcomponent_get_first_property(vtodo,
 865                                                               ICAL_STATUS_PROPERTY), prop != NULL) {
 866                         icalcomponent_remove_property(vtodo,prop);
 867                         icalproperty_free(prop);
 868                 }
 869                 while(prop = icalcomponent_get_first_property(vtodo,
 870                                                               ICAL_PERCENTCOMPLETE_PROPERTY), prop != NULL) {
 871                         icalcomponent_remove_property(vtodo,prop);
 872                         icalproperty_free(prop);
 873                 }
 874
 875                 if (havebstr("status")) {
 876                         icalproperty_status taskStatus = icalproperty_string_to_status(bstr("status"));
 877                         icalcomponent_set_status(vtodo, taskStatus);
 878                         icalcomponent_add_property(vtodo,
 879                                 icalproperty_new_percentcomplete(
 880                                         (strcasecmp(bstr("status"), "completed") ? 0 : 100)
 881                                 )
 882                         );
 883                 }
 884                 else {
 885                         icalcomponent_add_property(vtodo, icalproperty_new_percentcomplete(0));
 886                 }
 887                 while (prop = icalcomponent_get_first_property(vtodo,
 888                                                                ICAL_CATEGORIES_PROPERTY), prop != NULL) {
 889                         icalcomponent_remove_property(vtodo,prop);
 890                         icalproperty_free(prop);
 891                 }
 892                 if (!IsEmptyStr(bstr("category"))) {
 893                         prop = icalproperty_new_categories(bstr("category"));
 894                         icalcomponent_add_property(vtodo,prop);
 895                 }
 896                 while (prop = icalcomponent_get_first_property(vtodo,
 897                                                                ICAL_DUE_PROPERTY), prop != NULL) {
 898                         icalcomponent_remove_property(vtodo, prop);
 899                         icalproperty_free(prop);
 900                 }
 901                 if (IsEmptyStr(bstr("nodue"))) {
 902                         if (yesbstr("due_time")) {
 903                                 icaltime_from_webform(&t, "due");
 904                         }
 905                         else {
 906                                 icaltime_from_webform_dateonly(&t, "due");
 907                         }
 908                         icalcomponent_add_property(vtodo,
 909                                                    icalproperty_new_due(t)
 910                                 );
 911                 }
 912                 /** Give this task a UID if it doesn't have one. */
 913                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 914                 if (icalcomponent_get_first_property(vtodo,
 915                                                      ICAL_UID_PROPERTY) == NULL) {
 916                         generate_uuid(buf);
 917                         icalcomponent_add_property(vtodo,
 918                                                    icalproperty_new_uid(buf)
 919                                 );
 920                 }
 921
 922                 /* Increment the sequence ID */
 923                 lprintf(9, "Increment the sequence ID\n");
 924                 while (prop = icalcomponent_get_first_property(vtodo,
 925                                                                ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 926                         i = icalproperty_get_sequence(prop);
 927                         lprintf(9, "Sequence was %d\n", i);
 928                         if (i > sequence) sequence = i;
 929                         icalcomponent_remove_property(vtodo, prop);
 930                         icalproperty_free(prop);
 931                 }
 932                 ++sequence;
 933                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 934                 icalcomponent_add_property(vtodo,
 935                                            icalproperty_new_sequence(sequence)
 936                         );
 937
 938                 /*
 939                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 940                  * for two reasons: one, it's easier to just free the whole thing
 941                  * when we're done instead of unbundling, but more importantly, we
 942                  * can't encapsulate something that may already be encapsulated
 943                  * somewhere else.
 944                  */
 945                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 946                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 947
 948                 /* Serialize it and save it to the message base */
 949                 serv_puts("ENT0 1|||4");
 950                 serv_getln(buf, sizeof buf);
 951                 if (buf[0] == '4') {
 952                         serv_puts("Content-type: text/calendar");
 953                         serv_puts("");
 954                         serv_puts(icalcomponent_as_ical_string(encaps));
 955                         serv_puts("000");
 956
 957                         /*
 958                          * Probably not necessary; the server will see the UID
 959                          * of the object and delete the old one anyway, but
 960                          * just in case...
 961                          */
 962                         delete_existing = 1;
 963                 }
 964                 icalcomponent_free(encaps);
 965         }
 966
 967         /**
 968          * If the user clicked 'Delete' then explicitly delete the message.
 969          */
 970         if (havebstr("delete_button")) {
 971                 delete_existing = 1;
 972         }
 973
 974         if ( (delete_existing) && (msgnum > 0L) ) {
 975                 serv_printf("DELE %ld", lbstr("msgnum"));
 976                 serv_getln(buf, sizeof buf);
 977         }
 978
 979         if (created_new_vtodo) {
 980                 icalcomponent_free(vtodo);
 981         }
 982
 983         /* Go back to wherever we came from */
 984         if (ibstr("return_to_summary") == 1) {
 985                 summary();
 986         }
 987         else {
 988                 readloop(readfwd);
 989         }
 990 }
 991
 992
 993
 994 void process_ical_object(long msgnum, int unread,
 995                          char *from,
 996                          char *FlatIcal,
 997                          icalcomponent_kind which_kind,
 998                          IcalCallbackFunc CallBack,
 999                          struct calview *calv
1000         )
1001 {
1002         icalcomponent *cal, *c;
1003
1004         cal = icalcomponent_new_from_string(FlatIcal);
1005         if (cal != NULL) {
1006
1007                 /* A which_kind of (-1) means just load the whole thing */
1008                 if (which_kind == (-1)) {
1009                         CallBack(cal, msgnum, from, unread, calv);
1010                 }
1011
1012                 /* Otherwise recurse and hunt */
1013                 else {
1014
1015                         /* Simple components of desired type */
1016                         if (icalcomponent_isa(cal) == which_kind) {
1017                                 CallBack(cal, msgnum, from, unread, calv);
1018                         }
1019
1020                         /* Subcomponents of desired type */
1021                         for (c = icalcomponent_get_first_component(cal, which_kind);
1022                              (c != 0);
1023                              c = icalcomponent_get_next_component(cal, which_kind)) {
1024                                 CallBack(c, msgnum, from, unread, calv);
1025                         }
1026
1027                 }
1028
1029                 icalcomponent_free(cal);
1030         }
1031 }
1032
1033 /*
1034  * Code common to all icalendar display handlers.  Given a message number and a MIME
1035  * type, we load the message and hunt for that MIME type.  If found, we load
1036  * the relevant part, deserialize it into a libical component, filter it for
1037  * the requested object type, and feed it to the specified handler.
1038  */
1039 void load_ical_object(long msgnum, int unread,
1040                       icalcomponent_kind which_kind,
1041                       IcalCallbackFunc CallBack,
1042                       struct calview *calv,
1043                       int RenderAsync
1044         )
1045 {
1046         StrBuf *Buf;
1047         StrBuf *Data;
1048         const char *bptr;
1049         int Done = 0;
1050         char from[128] = "";
1051         char mime_partnum[256];
1052         char mime_filename[256];
1053         char mime_content_type[256];
1054         char mime_disposition[256];
1055         int mime_length;
1056         char relevant_partnum[256];
1057         char *relevant_source = NULL;
1058         int phase = 0;                          /* 0 = citadel headers, 1 = mime headers, 2 = body */
1059         char msg4_content_type[256] = "";
1060         char msg4_content_encoding[256] = "";
1061         int msg4_content_length = 0;
1062
1063         relevant_partnum[0] = '\0';
1064         serv_printf("MSG4 %ld", msgnum);        /* we need the mime headers */
1065         Buf = NewStrBuf();
1066         StrBuf_ServGetln(Buf);
1067         if (GetServerStatus(Buf, NULL) != 1) {
1068                 FreeStrBuf (&Buf);
1069                 return;
1070         }
1071         while (!Done && (StrBuf_ServGetln(Buf)>=0)) {
1072                 if ( (StrLength(Buf)==3) &&
1073                      !strcmp(ChrPtr(Buf), "000")) {
1074                         Done = 1;
1075                         break;
1076                 }
1077                 bptr = ChrPtr(Buf);
1078                 switch (phase) {
1079                 case 0:
1080                         if (!strncasecmp(bptr, "part=", 5)) {
1081                                 extract_token(mime_filename, &bptr[5], 1, '|', sizeof mime_filename);
1082                                 extract_token(mime_partnum, &bptr[5], 2, '|', sizeof mime_partnum);
1083                                 extract_token(mime_disposition, &bptr[5], 3, '|', sizeof mime_disposition);
1084                                 extract_token(mime_content_type, &bptr[5], 4, '|', sizeof mime_content_type);
1085                                 mime_length = extract_int(&bptr[5], 5);
1086
1087                                 if (  (!strcasecmp(mime_content_type, "text/calendar"))
1088                                       || (!strcasecmp(mime_content_type, "application/ics"))
1089                                       || (!strcasecmp(mime_content_type, "text/vtodo"))
1090                                         ) {
1091                                         strcpy(relevant_partnum, mime_partnum);
1092                                 }
1093                         }
1094                         else if (!strncasecmp(bptr, "from=", 4)) {
1095                                 extract_token(from, bptr, 1, '=', sizeof(from));
1096                         }
1097                         else if ((phase == 0) && (!strncasecmp(bptr, "text", 4))) {
1098                                 phase = 1;
1099                         }
1100                 break;
1101                 case 1:
1102                         if (!IsEmptyStr(bptr)) {
1103                                 if (!strncasecmp(bptr, "Content-type: ", 14)) {
1104                                         safestrncpy(msg4_content_type, &bptr[14], sizeof msg4_content_type);
1105                                         striplt(msg4_content_type);
1106                                 }
1107                                 else if (!strncasecmp(bptr, "Content-transfer-encoding: ", 27)) {
1108                                         safestrncpy(msg4_content_encoding, &bptr[27], sizeof msg4_content_encoding);
1109                                         striplt(msg4_content_type);
1110                                 }
1111                                 else if ((!strncasecmp(bptr, "Content-length: ", 16))) {
1112                                         msg4_content_length = atoi(&bptr[16]);
1113                                 }
1114                                 break;
1115                         }
1116                         else {
1117                                 phase++;
1118
1119                                 if ((msg4_content_length > 0)
1120                                     && ( !strcasecmp(msg4_content_encoding, "7bit"))
1121                                     && ((!strcasecmp(mime_content_type, "text/calendar"))
1122                                         || (!strcasecmp(mime_content_type, "application/ics"))
1123                                         || (!strcasecmp(mime_content_type, "text/vtodo"))
1124                                             )
1125                                         )
1126                                 {
1127                                 }
1128                         }
1129                 case 2:
1130                         Data = NewStrBufPlain(NULL, msg4_content_length * 2);
1131                         if (msg4_content_length > 0) {
1132                                 StrBuf_ServGetBLOBBuffered(Data, msg4_content_length);
1133                                 phase ++;
1134                         }
1135                         else {
1136                                 StrBufAppendBuf(Data, Buf, 0);
1137                                 StrBufAppendBufPlain(Data, "\r\n", 1, 0);
1138                         }
1139                 case 3:
1140                         StrBufAppendBuf(Data, Buf, 0);
1141                 }
1142         }
1143         FreeStrBuf(&Buf);
1144
1145         /* If MSG4 didn't give us the part we wanted, but we know that we can find it
1146          * as one of the other MIME parts, attempt to load it now.
1147          */
1148         if ((Data == NULL) && (!IsEmptyStr(relevant_partnum))) {
1149                 Data = load_mimepart(msgnum, relevant_partnum);
1150         }
1151
1152         if (Data != NULL) {
1153                 relevant_source = (char*) ChrPtr(Data);
1154                 process_ical_object(msgnum, unread,
1155                                     from,
1156                                     relevant_source,
1157                                     which_kind,
1158                                     CallBack,
1159                                     calv);
1160                 FreeStrBuf (&Data);
1161         }
1162
1163         icalmemory_free_ring();
1164 }
1165
1166 /*
1167  * Display a calendar item
1168  */
1169 void load_calendar_item(message_summary *Msg, int unread, struct calview *c) {
1170         load_ical_object(Msg->msgnum, unread, (-1), display_individual_cal, c, 1);
1171 }
1172
1173 /*
1174  * Display task view
1175  */
1176 void display_task(message_summary *Msg, int unread) {
1177         load_ical_object(Msg->msgnum, unread, ICAL_VTODO_COMPONENT, display_individual_cal, NULL, 0);
1178 }
1179
1180 /*
1181  * Display the editor component for a task
1182  */
1183 void display_edit_task(void) {
1184         long msgnum = 0L;
1185
1186         /* Force change the room if we have to */
1187         if (havebstr("taskrm")) {
1188                 gotoroom(sbstr("taskrm"));
1189         }
1190
1191         msgnum = lbstr("msgnum");
1192         if (msgnum > 0L) {
1193                 /* existing task */
1194                 load_ical_object(msgnum, 0,
1195                                  ICAL_VTODO_COMPONENT,
1196                                  display_edit_individual_task,
1197                                  NULL, 0
1198                 );
1199         }
1200         else {
1201                 /* new task */
1202                 display_edit_individual_task(NULL, 0L, "", 0, NULL);
1203         }
1204 }
1205
1206 /*
1207  * save an edited task
1208  */
1209 void save_task(void) {
1210         long msgnum = 0L;
1211         msgnum = lbstr("msgnum");
1212         if (msgnum > 0L) {
1213                 load_ical_object(msgnum, 0, ICAL_VTODO_COMPONENT, save_individual_task, NULL, 0);
1214         }
1215         else {
1216                 save_individual_task(NULL, 0L, "", 0, NULL);
1217         }
1218 }
1219
1220 /*
1221  * display the editor component for an event
1222  */
1223 void display_edit_event(void) {
1224         long msgnum = 0L;
1225
1226         msgnum = lbstr("msgnum");
1227         if (msgnum > 0L) {
1228                 /* existing event */
1229                 load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, display_edit_individual_event, NULL, 0);
1230         }
1231         else {
1232                 /* new event */
1233                 display_edit_individual_event(NULL, 0L, "", 0, NULL);
1234         }
1235 }
1236
1237 /*
1238  * save an edited event
1239  */
1240 void save_event(void) {
1241         long msgnum = 0L;
1242
1243         msgnum = lbstr("msgnum");
1244
1245         if (msgnum > 0L) {
1246                 load_ical_object(msgnum, 0, (-1), save_individual_event, NULL, 0);
1247         }
1248         else {
1249                 save_individual_event(NULL, 0L, "", 0, NULL);
1250         }
1251 }
1252
1253
1254
1255
1256
1257 /*
1258  * Anonymous request of freebusy data for a user
1259  */
1260 void do_freebusy(const char *req) {
1261         char who[SIZ];
1262         char buf[SIZ];
1263         int len;
1264         long lines;
1265
1266         extract_token(who, req, 1, ' ', sizeof who);
1267         if (!strncasecmp(who, "/freebusy/", 10)) {
1268                 strcpy(who, &who[10]);
1269         }
1270         unescape_input(who);
1271
1272         len = strlen(who);
1273         if ( (!strcasecmp(&who[len-4], ".vcf"))
1274              || (!strcasecmp(&who[len-4], ".ifb"))
1275              || (!strcasecmp(&who[len-4], ".vfb")) ) {
1276                 who[len-4] = 0;
1277         }
1278
1279         lprintf(9, "freebusy requested for <%s>\n", who);
1280         serv_printf("ICAL freebusy|%s", who);
1281         serv_getln(buf, sizeof buf);
1282
1283         if (buf[0] != '1') {
1284                 hprintf("HTTP/1.1 404 %s\n", &buf[4]);
1285                 output_headers(0, 0, 0, 0, 0, 0);
1286                 hprintf("Content-Type: text/plain\r\n");
1287                 wprintf("%s\n", &buf[4]);
1288                 end_burst();
1289                 return;
1290         }
1291
1292         read_server_text(WC->WBuf, &lines);
1293         http_transmit_thing("text/calendar", 0);
1294 }
1295
1296
1297
1298
1299
1300 void
1301 InitModule_CALENDAR
1302 (void)
1303 {
1304         RegisterPreference("daystart", _("Calendar day view begins at:"), PRF_INT, NULL);
1305         RegisterPreference("dayend", _("Calendar day view ends at:"), PRF_INT, NULL);
1306         RegisterPreference("weekstart", _("Week starts on:"), PRF_INT, NULL);
1307
1308         WebcitAddUrlHandler(HKEY("display_edit_task"), display_edit_task, 0);
1309         WebcitAddUrlHandler(HKEY("save_task"), save_task, 0);
1310         WebcitAddUrlHandler(HKEY("display_edit_event"), display_edit_event, 0);
1311         WebcitAddUrlHandler(HKEY("save_event"), save_event, 0);
1312         WebcitAddUrlHandler(HKEY("respond_to_request"), respond_to_request, 0);
1313         WebcitAddUrlHandler(HKEY("handle_rsvp"), handle_rsvp, 0);
1314 }