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         cal_process_object(Mime->Data, cal, 0, Mime->msgnum, ChrPtr(Mime->PartNum));
 287
 288         /* Free the memory we obtained from libical's constructor */
 289         icalcomponent_free(cal);
 290 }
 291
 292
 293
 294
 295 /**
 296  * \brief accept/decline meeting
 297  * Respond to a meeting request
 298  */
 299 void respond_to_request(void)
 300 {
 301         char buf[1024];
 302
 303         begin_ajax_response();
 304
 305         serv_printf("ICAL respond|%s|%s|%s|",
 306                 bstr("msgnum"),
 307                 bstr("cal_partnum"),
 308                 bstr("sc")
 309         );
 310         serv_getln(buf, sizeof buf);
 311
 312         if (buf[0] == '2') {
 313                 wprintf("<img src=\"static/calarea_48x.gif\"><span>");
 314                 if (!strcasecmp(bstr("sc"), "accept")) {
 315                         wprintf(_("You have accepted this meeting invitation.  "
 316                                 "It has been entered into your calendar.")
 317                         );
 318                 } else if (!strcasecmp(bstr("sc"), "tentative")) {
 319                         wprintf(_("You have tentatively accepted this meeting invitation.  "
 320                                 "It has been 'pencilled in' to your calendar.")
 321                         );
 322                 } else if (!strcasecmp(bstr("sc"), "decline")) {
 323                         wprintf(_("You have declined this meeting invitation.  "
 324                                   "It has <b>not</b> been entered into your calendar.")
 325                                 );
 326                 }
 327                 wprintf(" ");
 328                 wprintf(_("A reply has been sent to the meeting organizer."));
 329                 wprintf("</span>");
 330         } else {
 331                 wprintf("<img align=\"center\" src=\"static/error.gif\"><span>");
 332                 wprintf("%s\n", &buf[4]);
 333                 wprintf("</span>");
 334         }
 335
 336         end_ajax_response();
 337 }
 338
 339
 340
 341 /**
 342  * \brief Handle an incoming RSVP
 343  */
 344 void handle_rsvp(void)
 345 {
 346         char buf[1024];
 347
 348         begin_ajax_response();
 349
 350         serv_printf("ICAL handle_rsvp|%s|%s|%s|",
 351                 bstr("msgnum"),
 352                 bstr("cal_partnum"),
 353                 bstr("sc")
 354         );
 355         serv_getln(buf, sizeof buf);
 356
 357         if (buf[0] == '2') {
 358                 wprintf("<img src=\"static/calarea_48x.gif\"><span>");
 359                 if (!strcasecmp(bstr("sc"), "update")) {
 360                         wprintf(_("Your calendar has been updated to reflect this RSVP."));
 361                 } else if (!strcasecmp(bstr("sc"), "ignore")) {
 362                         wprintf(_("You have chosen to ignore this RSVP. "
 363                                   "Your calendar has <b>not</b> been updated.")
 364                                 );
 365                 }
 366                 wprintf("</span>");
 367         } else {
 368                 wprintf("<img src=\"static/error.gif\"><span> %s\n", &buf[4]);
 369                 wprintf("</span>");
 370         }
 371
 372         end_ajax_response();
 373 }
 374
 375
 376
 377 /*@}*/
 378 /*-----------------------------------------------------------------------**/
 379
 380
 381
 382 /**
 383  * \defgroup MsgDisplayHandlers Display handlers for message reading
 384  * \ingroup Calendaring
 385  */
 386
 387 /*@{*/
 388
 389 int Flathash(const char *str, long len)
 390 {
 391         if (len != sizeof (int))
 392                 return 0;
 393         else return *(int*)str;
 394 }
 395
 396
 397
 398 /**
 399  * \brief clean up ical memory
 400  * todo this could get trouble with future ical versions
 401  */
 402 void delete_cal(void *vCal)
 403 {
 404         disp_cal *Cal = (disp_cal*) vCal;
 405         icalcomponent_free(Cal->cal);
 406         free(Cal->from);
 407         free(Cal);
 408 }
 409
 410 /*
 411  * This is the meat-and-bones of the first part of our two-phase calendar display.
 412  * As we encounter calendar items in messages being read from the server, we break out
 413  * any iCalendar objects and store them in a hash table.  Later on, the second phase will
 414  * use this hash table to render the calendar for display.
 415  */
 416 void display_individual_cal(icalcomponent *cal, long msgnum, char *from, int unread, struct calview *calv)
 417 {
 418         icalproperty *ps = NULL;
 419         struct icaltimetype dtstart, dtend;
 420         struct icaldurationtype dur;
 421         struct wcsession *WCC = WC;
 422         disp_cal *Cal;
 423         size_t len;
 424         time_t final_recurrence = 0;
 425
 426         /* recur variables */
 427         icalproperty *rrule = NULL;
 428         struct icalrecurrencetype recur;
 429         icalrecur_iterator *ritr = NULL;
 430         struct icaltimetype next;
 431         int num_recur = 0;
 432
 433         dtstart = icaltime_null_time();
 434         dtend = icaltime_null_time();
 435
 436         if (WCC->disp_cal_items == NULL)
 437                 WCC->disp_cal_items = NewHash(0, Flathash);
 438
 439         /* Note: anything we do here, we also have to do below for the recurrences. */
 440         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 441         memset(Cal, 0, sizeof(disp_cal));
 442
 443         Cal->cal = icalcomponent_new_clone(cal);
 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_dtstart(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
 488         rrule = icalcomponent_get_first_property(Cal->cal, ICAL_RRULE_PROPERTY);
 489         if (!rrule) return;
 490         recur = icalproperty_get_rrule(rrule);
 491         ritr = icalrecur_iterator_new(recur, dtstart);
 492         if (!ritr) return;
 493
 494         int stop_rr = 0;
 495         while (next = icalrecur_iterator_next(ritr), ((!icaltime_is_null_time(next))&&(!stop_rr)) ) {
 496                 ++num_recur;
 497
 498                 if (num_recur > 1) {            /* Skip the first one.  We already did it at the root. */
 499
 500                         /* Note: anything we do here, we also have to do above for the root event. */
 501                         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 502                         memset(Cal, 0, sizeof(disp_cal));
 503
 504                         Cal->cal = icalcomponent_new_clone(cal);
 505                         Cal->unread = unread;
 506                         len = strlen(from);
 507                         Cal->from = (char*)malloc(len+ 1);
 508                         memcpy(Cal->from, from, len + 1);
 509                         Cal->cal_msgnum = msgnum;
 510
 511                         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 512                         if (ps != NULL) {
 513                                 icalcomponent_remove_property(Cal->cal, ps);
 514                                 ps = icalproperty_new_dtstart(next);
 515                                 icalcomponent_add_property(Cal->cal, ps);
 516                                 Cal->event_start = icaltime_as_timet(next);
 517                                 final_recurrence = Cal->event_start;
 518                         }
 519
 520                         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 521                         if (ps != NULL) {
 522                                 icalcomponent_remove_property(Cal->cal, ps);
 523
 524                                 /* Make a new dtend */
 525                                 ps = icalproperty_new_dtend(icaltime_add(next, dur));
 526
 527                                 /* and stick it somewhere */
 528                                 icalcomponent_add_property(Cal->cal, ps);
 529                         }
 530
 531                         if ( (Cal->event_start > calv->lower_bound)
 532                            && (Cal->event_start < calv->upper_bound) ) {
 533                                 Put(WCC->disp_cal_items,
 534                                         (char*) &Cal->event_start,
 535                                         sizeof(Cal->event_start),
 536                                         Cal,
 537                                         delete_cal
 538                                 );
 539                         }
 540                         else {
 541                                 delete_cal(Cal);
 542                         }
 543
 544                         /* If an upper bound is set, stop when we go out of scope */
 545                         if (final_recurrence > calv->upper_bound) stop_rr = 1;
 546                 }
 547         }
 548         icalrecur_iterator_free(ritr);
 549         /* lprintf(9, "Performed %d recurrences; final one is %s", num_recur, ctime(&final_recurrence)); */
 550
 551 }
 552
 553
 554
 555 /*
 556  * Display a task by itself (for editing)
 557  */
 558 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum, char *from,
 559                         int unread, struct calview *calv)
 560 {
 561         icalcomponent *vtodo;
 562         icalproperty *p;
 563         struct icaltimetype IcalTime;
 564         time_t now;
 565         int created_new_vtodo = 0;
 566         icalproperty_status todoStatus;
 567
 568         now = time(NULL);
 569
 570         if (supplied_vtodo != NULL) {
 571                 vtodo = supplied_vtodo;
 572
 573                 /**
 574                  * If we're looking at a fully encapsulated VCALENDAR
 575                  * rather than a VTODO component, attempt to use the first
 576                  * relevant VTODO subcomponent.  If there is none, the
 577                  * NULL returned by icalcomponent_get_first_component() will
 578                  * tell the next iteration of this function to create a
 579                  * new one.
 580                  */
 581                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 582                         display_edit_individual_task(
 583                                 icalcomponent_get_first_component(
 584                                         vtodo, ICAL_VTODO_COMPONENT
 585                                         ),
 586                                 msgnum, from, unread, calv
 587                                 );
 588                         return;
 589                 }
 590         }
 591         else {
 592                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 593                 created_new_vtodo = 1;
 594         }
 595
 596         // TODO: Can we take all this and move it into a template?
 597         output_headers(1, 1, 1, 0, 0, 0);
 598         wprintf("<!-- start task edit form -->");
 599         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 600         // Get summary early for title
 601         wprintf("<div class=\"box\">\n");
 602         wprintf("<div class=\"boxlabel\">");
 603         wprintf(_("Edit task"));
 604         wprintf("- ");
 605         if (p != NULL) {
 606                 escputs((char *)icalproperty_get_comment(p));
 607         }
 608         wprintf("</div>");
 609
 610         wprintf("<div class=\"boxcontent\">\n");
 611         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 612         wprintf("<div style=\"display: none;\">\n       ");
 613         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 614         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 615                 msgnum);
 616         wprintf("</div>");
 617         wprintf("<table class=\"calendar_background\"><tr><td>");
 618         wprintf("<TABLE STYLE=\"border: none;\">\n");
 619
 620         wprintf("<TR><TD>");
 621         wprintf(_("Summary:"));
 622         wprintf("</TD><TD>"
 623                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 624                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 625         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 626         if (p != NULL) {
 627                 escputs((char *)icalproperty_get_comment(p));
 628         }
 629         wprintf("\"></TD></TR>\n");
 630
 631         wprintf("<TR><TD>");
 632         wprintf(_("Start date:"));
 633         wprintf("</TD><TD>");
 634         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 635         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodtstart\" ID=\"nodtstart\" VALUE=\"NODTSTART\" ");
 636         if (p == NULL) {
 637                 wprintf("CHECKED=\"CHECKED\"");
 638         }
 639         wprintf(">");
 640         wprintf(_("No date"));
 641
 642         wprintf(" ");
 643         wprintf(_("or"));
 644         wprintf(" ");
 645         if (p != NULL) {
 646                 IcalTime = icalproperty_get_dtstart(p);
 647         }
 648         else
 649                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 650         display_icaltimetype_as_webform(&IcalTime, "dtstart", 0);
 651         wprintf("</TD></TR>\n");
 652
 653         wprintf("<TR><TD>");
 654         wprintf(_("Due date:"));
 655         wprintf("</TD><TD>");
 656         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 657         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodue\" ID=\"nodue\" VALUE=\"NODUE\"");
 658         if (p == NULL) {
 659                 wprintf("CHECKED=\"CHECKED\"");
 660         }
 661         wprintf(">");
 662         wprintf(_("No date"));
 663         wprintf(" ");
 664         wprintf(_("or"));
 665         wprintf(" ");
 666         if (p != NULL) {
 667                 IcalTime = icalproperty_get_due(p);
 668         }
 669         else
 670                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 671         display_icaltimetype_as_webform(&IcalTime, "due", 0);
 672
 673         wprintf("</TD></TR>\n");
 674         todoStatus = icalcomponent_get_status(vtodo);
 675         wprintf("<TR><TD>\n");
 676         wprintf(_("Completed:"));
 677         wprintf("</TD><TD>");
 678         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"status\" VALUE=\"COMPLETED\"");
 679         if (todoStatus == ICAL_STATUS_COMPLETED) {
 680                 wprintf(" CHECKED=\"CHECKED\"");
 681         }
 682         wprintf(" >");
 683         wprintf("</TD></TR>");
 684         // start category field
 685         p = icalcomponent_get_first_property(vtodo, ICAL_CATEGORIES_PROPERTY);
 686         wprintf("<TR><TD>");
 687         wprintf(_("Category:"));
 688         wprintf("</TD><TD>");
 689         wprintf("<INPUT TYPE=\"text\" NAME=\"category\" MAXLENGTH=\"32\" SIZE=\"32\" VALUE=\"");
 690         if (p != NULL) {
 691                 escputs((char *)icalproperty_get_categories(p));
 692         }
 693         wprintf("\">");
 694         wprintf("</TD></TR>\n   ");
 695         // end category field
 696         wprintf("<TR><TD>");
 697         wprintf(_("Description:"));
 698         wprintf("</TD><TD>");
 699         wprintf("<TEXTAREA NAME=\"description\" "
 700                 "ROWS=\"10\" COLS=\"80\">\n"
 701                 );
 702         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 703         if (p != NULL) {
 704                 escputs((char *)icalproperty_get_comment(p));
 705         }
 706         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 707
 708         wprintf("<SPAN STYLE=\"text-align: center;\">"
 709                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 710                 "&nbsp;&nbsp;"
 711                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 712                 "&nbsp;&nbsp;"
 713                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 714                 "</SPAN>\n",
 715                 _("Save"),
 716                 _("Delete"),
 717                 _("Cancel")
 718                 );
 719         wprintf("</td></tr></table>");
 720         wprintf("</FORM>\n");
 721         wprintf("</div></div></div>\n");
 722         wprintf("<!-- end task edit form -->");
 723         wDumpContent(1);
 724
 725         if (created_new_vtodo) {
 726                 icalcomponent_free(vtodo);
 727         }
 728 }
 729
 730 /*
 731  * \brief Save an edited task
 732  * \param supplied_vtodo the task to save
 733  * \param msgnum number of the mesage in our db
 734  */
 735 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum, char* from, int unread,
 736                                 struct calview *calv)
 737 {
 738         char buf[SIZ];
 739         int delete_existing = 0;
 740         icalproperty *prop;
 741         icalcomponent *vtodo, *encaps;
 742         int created_new_vtodo = 0;
 743         int i;
 744         int sequence = 0;
 745         struct icaltimetype t;
 746
 747         if (supplied_vtodo != NULL) {
 748                 vtodo = supplied_vtodo;
 749                 /**
 750                  * If we're looking at a fully encapsulated VCALENDAR
 751                  * rather than a VTODO component, attempt to use the first
 752                  * relevant VTODO subcomponent.  If there is none, the
 753                  * NULL returned by icalcomponent_get_first_component() will
 754                  * tell the next iteration of this function to create a
 755                  * new one.
 756                  */
 757                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 758                         save_individual_task(
 759                                 icalcomponent_get_first_component(
 760                                         vtodo, ICAL_VTODO_COMPONENT),
 761                                 msgnum, from, unread, calv
 762                                 );
 763                         return;
 764                 }
 765         }
 766         else {
 767                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 768                 created_new_vtodo = 1;
 769         }
 770
 771         if (havebstr("save_button")) {
 772
 773                 /** Replace values in the component with ones from the form */
 774
 775                 while (prop = icalcomponent_get_first_property(vtodo,
 776                                                                ICAL_SUMMARY_PROPERTY), prop != NULL) {
 777                         icalcomponent_remove_property(vtodo, prop);
 778                         icalproperty_free(prop);
 779                 }
 780                 if (havebstr("summary")) {
 781
 782                         icalcomponent_add_property(vtodo,
 783                                                    icalproperty_new_summary(bstr("summary")));
 784                 } else {
 785                         icalcomponent_add_property(vtodo,
 786                                                    icalproperty_new_summary("Untitled Task"));
 787                 }
 788
 789                 while (prop = icalcomponent_get_first_property(vtodo,
 790                                                                ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 791                         icalcomponent_remove_property(vtodo, prop);
 792                         icalproperty_free(prop);
 793                 }
 794                 if (havebstr("description")) {
 795                         icalcomponent_add_property(vtodo,
 796                                                    icalproperty_new_description(bstr("description")));
 797                 }
 798
 799                 while (prop = icalcomponent_get_first_property(vtodo,
 800                                                                ICAL_DTSTART_PROPERTY), prop != NULL) {
 801                         icalcomponent_remove_property(vtodo, prop);
 802                         icalproperty_free(prop);
 803                 }
 804                 if (IsEmptyStr(bstr("nodtstart"))) {
 805                         icaltime_from_webform(&t, "dtstart");
 806                         icalcomponent_add_property(vtodo,
 807                                                    icalproperty_new_dtstart(t)
 808                                 );
 809                 }
 810                 while(prop = icalcomponent_get_first_property(vtodo,
 811                                                               ICAL_STATUS_PROPERTY), prop != NULL) {
 812                         icalcomponent_remove_property(vtodo,prop);
 813                         icalproperty_free(prop);
 814                 }
 815                 if (havebstr("status")) {
 816                         icalproperty_status taskStatus = icalproperty_string_to_status(
 817                                 bstr("status"));
 818                         icalcomponent_set_status(vtodo, taskStatus);
 819                 }
 820                 while (prop = icalcomponent_get_first_property(vtodo,
 821                                                                ICAL_CATEGORIES_PROPERTY), prop != NULL) {
 822                         icalcomponent_remove_property(vtodo,prop);
 823                         icalproperty_free(prop);
 824                 }
 825                 if (!IsEmptyStr(bstr("category"))) {
 826                         prop = icalproperty_new_categories(bstr("category"));
 827                         icalcomponent_add_property(vtodo,prop);
 828                 }
 829                 while (prop = icalcomponent_get_first_property(vtodo,
 830                                                                ICAL_DUE_PROPERTY), prop != NULL) {
 831                         icalcomponent_remove_property(vtodo, prop);
 832                         icalproperty_free(prop);
 833                 }
 834                 if (IsEmptyStr(bstr("nodue"))) {
 835                         icaltime_from_webform(&t, "due");
 836                         icalcomponent_add_property(vtodo,
 837                                                    icalproperty_new_due(t)
 838                                 );
 839                 }
 840                 /** Give this task a UID if it doesn't have one. */
 841                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 842                 if (icalcomponent_get_first_property(vtodo,
 843                                                      ICAL_UID_PROPERTY) == NULL) {
 844                         generate_uuid(buf);
 845                         icalcomponent_add_property(vtodo,
 846                                                    icalproperty_new_uid(buf)
 847                                 );
 848                 }
 849
 850                 /** Increment the sequence ID */
 851                 lprintf(9, "Increment the sequence ID\n");
 852                 while (prop = icalcomponent_get_first_property(vtodo,
 853                                                                ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 854                         i = icalproperty_get_sequence(prop);
 855                         lprintf(9, "Sequence was %d\n", i);
 856                         if (i > sequence) sequence = i;
 857                         icalcomponent_remove_property(vtodo, prop);
 858                         icalproperty_free(prop);
 859                 }
 860                 ++sequence;
 861                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 862                 icalcomponent_add_property(vtodo,
 863                                            icalproperty_new_sequence(sequence)
 864                         );
 865
 866                 /**
 867                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 868                  * for two reasons: one, it's easier to just free the whole thing
 869                  * when we're done instead of unbundling, but more importantly, we
 870                  * can't encapsulate something that may already be encapsulated
 871                  * somewhere else.
 872                  */
 873                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 874                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 875
 876                 /* Serialize it and save it to the message base */
 877                 serv_puts("ENT0 1|||4");
 878                 serv_getln(buf, sizeof buf);
 879                 if (buf[0] == '4') {
 880                         serv_puts("Content-type: text/calendar");
 881                         serv_puts("");
 882                         serv_puts(icalcomponent_as_ical_string(encaps));
 883                         serv_puts("000");
 884
 885                         /**
 886                          * Probably not necessary; the server will see the UID
 887                          * of the object and delete the old one anyway, but
 888                          * just in case...
 889                          */
 890                         delete_existing = 1;
 891                 }
 892                 icalcomponent_free(encaps);
 893         }
 894
 895         /**
 896          * If the user clicked 'Delete' then explicitly delete the message.
 897          */
 898         if (havebstr("delete_button")) {
 899                 delete_existing = 1;
 900         }
 901
 902         if ( (delete_existing) && (msgnum > 0L) ) {
 903                 serv_printf("DELE %ld", lbstr("msgnum"));
 904                 serv_getln(buf, sizeof buf);
 905         }
 906
 907         if (created_new_vtodo) {
 908                 icalcomponent_free(vtodo);
 909         }
 910
 911         /** Go back to the task list */
 912         readloop("readfwd");
 913 }
 914
 915
 916
 917 /*
 918  * Code common to all icalendar display handlers.  Given a message number and a MIME
 919  * type, we load the message and hunt for that MIME type.  If found, we load
 920  * the relevant part, deserialize it into a libical component, filter it for
 921  * the requested object type, and feed it to the specified handler.
 922  */
 923 void load_ical_object(long msgnum, int unread,
 924                            icalcomponent_kind which_kind,
 925                            void (*callback)(icalcomponent *, long, char*, int, struct calview *),
 926                            struct calview *calv
 927         )
 928 {
 929         char buf[1024];
 930         char from[128] = "";
 931         char mime_partnum[256];
 932         char mime_filename[256];
 933         char mime_content_type[256];
 934         char mime_disposition[256];
 935         int mime_length;
 936         char relevant_partnum[256];
 937         char *relevant_source = NULL;
 938         icalcomponent *cal, *c;
 939
 940         relevant_partnum[0] = '\0';
 941         sprintf(buf, "MSG4 %ld", msgnum);       /* we need the mime headers */
 942         serv_puts(buf);
 943         serv_getln(buf, sizeof buf);
 944         if (buf[0] != '1') return;
 945
 946         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 947                 if (!strncasecmp(buf, "part=", 5)) {
 948                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 949                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 950                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 951                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 952                         mime_length = extract_int(&buf[5], 5);
 953
 954                         if (  (!strcasecmp(mime_content_type, "text/calendar"))
 955                               || (!strcasecmp(mime_content_type, "application/ics"))
 956                               || (!strcasecmp(mime_content_type, "text/vtodo"))
 957                                 ) {
 958                                 strcpy(relevant_partnum, mime_partnum);
 959                         }
 960                 }
 961                 else if (!strncasecmp(buf, "from=", 4)) {
 962                         extract_token(from, buf, 1, '=', sizeof(from));
 963                 }
 964         }
 965
 966         if (!IsEmptyStr(relevant_partnum)) {
 967                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 968                 if (relevant_source != NULL) {
 969
 970                         cal = icalcomponent_new_from_string(relevant_source);
 971                         if (cal != NULL) {
 972
 973                                 /* Simple components of desired type */
 974                                 if (icalcomponent_isa(cal) == which_kind) {
 975                                         callback(cal, msgnum, from, unread, calv);
 976                                 }
 977
 978                                 /* Subcomponents of desired type */
 979                                 for (c = icalcomponent_get_first_component(cal, which_kind);
 980                                      (c != 0);
 981                                      c = icalcomponent_get_next_component(cal, which_kind)) {
 982                                         callback(c, msgnum, from, unread, calv);
 983                                 }
 984                                 icalcomponent_free(cal);
 985                         }
 986                         free(relevant_source);
 987                 }
 988         }
 989         icalmemory_free_ring();
 990 }
 991
 992 /*
 993  * Display a calendar item
 994  */
 995 void load_calendar_item(message_summary *Msg, int unread, struct calview *c) {
 996         load_ical_object(Msg->msgnum, unread, ICAL_VEVENT_COMPONENT, display_individual_cal, c);
 997 }
 998
 999 /*
1000  * Display task view
1001  */
1002 void display_task(message_summary *Msg, int unread) {
1003         load_ical_object(Msg->msgnum, unread, ICAL_VTODO_COMPONENT, display_individual_cal, NULL);
1004 }
1005
1006 /*
1007  * Display the editor component for a task
1008  */
1009 void display_edit_task(void) {
1010         long msgnum = 0L;
1011
1012         /* Force change the room if we have to */
1013         if (havebstr("taskrm")) {
1014                 gotoroom((char *)bstr("taskrm"));
1015         }
1016
1017         msgnum = lbstr("msgnum");
1018         if (msgnum > 0L) {
1019                 /* existing task */
1020                 load_ical_object(msgnum, 0,
1021                                       ICAL_VTODO_COMPONENT,
1022                                       display_edit_individual_task,
1023                                       NULL
1024                 );
1025         }
1026         else {
1027                 /* new task */
1028                 display_edit_individual_task(NULL, 0L, "", 0, NULL);
1029         }
1030 }
1031
1032 /*
1033  * save an edited task
1034  */
1035 void save_task(void) {
1036         long msgnum = 0L;
1037         msgnum = lbstr("msgnum");
1038         if (msgnum > 0L) {
1039                 load_ical_object(msgnum, 0, ICAL_VTODO_COMPONENT, save_individual_task, NULL);
1040         }
1041         else {
1042                 save_individual_task(NULL, 0L, "", 0, NULL);
1043         }
1044 }
1045
1046 /*
1047  * display the editor component for an event
1048  */
1049 void display_edit_event(void) {
1050         long msgnum = 0L;
1051
1052         msgnum = lbstr("msgnum");
1053         if (msgnum > 0L) {
1054                 /* existing event */
1055                 load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, display_edit_individual_event, NULL);
1056         }
1057         else {
1058                 /* new event */
1059                 display_edit_individual_event(NULL, 0L, "", 0, NULL);
1060         }
1061 }
1062
1063 /*
1064  * save an edited event
1065  */
1066 void save_event(void) {
1067         long msgnum = 0L;
1068
1069         msgnum = lbstr("msgnum");
1070
1071         if (msgnum > 0L) {
1072                 load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, save_individual_event, NULL);
1073         }
1074         else {
1075                 save_individual_event(NULL, 0L, "", 0, NULL);
1076         }
1077 }
1078
1079
1080
1081
1082
1083 /*
1084  * Anonymous request of freebusy data for a user
1085  */
1086 void do_freebusy(const char *req) {
1087         char who[SIZ];
1088         char buf[SIZ];
1089         int len;
1090         long lines;
1091
1092         extract_token(who, req, 1, ' ', sizeof who);
1093         if (!strncasecmp(who, "/freebusy/", 10)) {
1094                 strcpy(who, &who[10]);
1095         }
1096         unescape_input(who);
1097
1098         len = strlen(who);
1099         if ( (!strcasecmp(&who[len-4], ".vcf"))
1100              || (!strcasecmp(&who[len-4], ".ifb"))
1101              || (!strcasecmp(&who[len-4], ".vfb")) ) {
1102                 who[len-4] = 0;
1103         }
1104
1105         lprintf(9, "freebusy requested for <%s>\n", who);
1106         serv_printf("ICAL freebusy|%s", who);
1107         serv_getln(buf, sizeof buf);
1108
1109         if (buf[0] != '1') {
1110                 hprintf("HTTP/1.1 404 %s\n", &buf[4]);
1111                 output_headers(0, 0, 0, 0, 0, 0);
1112                 hprintf("Content-Type: text/plain\r\n");
1113                 wprintf("%s\n", &buf[4]);
1114                 end_burst();
1115                 return;
1116         }
1117
1118         read_server_text(WC->WBuf, &lines);
1119         http_transmit_thing("text/calendar", 0);
1120 }
1121
1122
1123
1124
1125
1126 void
1127 InitModule_CALENDAR
1128 (void)
1129 {
1130         WebcitAddUrlHandler(HKEY("display_edit_task"), display_edit_task, 0);
1131         WebcitAddUrlHandler(HKEY("save_task"), save_task, 0);
1132         WebcitAddUrlHandler(HKEY("display_edit_event"), display_edit_event, 0);
1133         WebcitAddUrlHandler(HKEY("save_event"), save_event, 0);
1134         WebcitAddUrlHandler(HKEY("respond_to_request"), respond_to_request, 0);
1135         WebcitAddUrlHandler(HKEY("handle_rsvp"), handle_rsvp, 0);
1136 }