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