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         ical_dezonify(Cal->cal);                        /* just-in-time dezonify is necessary */
 445         Cal->unread = unread;
 446         len = strlen(from);
 447         Cal->from = (char*)malloc(len+ 1);
 448         memcpy(Cal->from, from, len + 1);
 449         Cal->cal_msgnum = msgnum;
 450
 451         /* Precalculate the starting date and time of this event, and store it in our top-level
 452          * structure.  Later, when we are rendering the calendar, we can just peek at these values
 453          * without having to break apart every calendar item.
 454          */
 455         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 456         if (ps != NULL) {
 457                 dtstart = icalproperty_get_dtstart(ps);
 458                 Cal->event_start = icaltime_as_timet(dtstart);
 459                 lprintf(9, "\e[31mINITIAL: %s\e[0m", ctime(&Cal->event_start));
 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         rrule = icalcomponent_get_first_property(cal, ICAL_RRULE_PROPERTY);
 490         if (!rrule) return;
 491         recur = icalproperty_get_rrule(rrule);
 492         ritr = icalrecur_iterator_new(recur, dtstart);
 493         if (!ritr) return;
 494
 495         int stop_rr = 0;
 496         while (next = icalrecur_iterator_next(ritr), ((!icaltime_is_null_time(next))&&(!stop_rr)) ) {
 497                 ++num_recur;
 498
 499                 if (num_recur > 1) {            /* Skip the first one.  We already did it at the root. */
 500
 501                         /* Note: anything we do here, we also have to do above for the root event. */
 502                         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 503                         memset(Cal, 0, sizeof(disp_cal));
 504
 505                         Cal->cal = icalcomponent_new_clone(cal);
 506                         Cal->unread = unread;
 507                         len = strlen(from);
 508                         Cal->from = (char*)malloc(len+ 1);
 509                         memcpy(Cal->from, from, len + 1);
 510                         Cal->cal_msgnum = msgnum;
 511
 512                         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 513                         if (ps != NULL) {
 514                                 icalcomponent_remove_property(Cal->cal, ps);
 515                                 ps = icalproperty_new_dtstart(next);
 516                                 icalcomponent_add_property(Cal->cal, ps);
 517                                 ical_dezonify(Cal->cal);        /* dezonify every recurrence - we may
 518                                                                  * have hit the start/end of DST */
 519                                 Cal->event_start = icaltime_as_timet(next);
 520                                 lprintf(9, "\e[32mREPEATS: %s\e[0m", ctime(&Cal->event_start));
 521                                 final_recurrence = Cal->event_start;
 522                         }
 523
 524                         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 525                         if (ps != NULL) {
 526                                 icalcomponent_remove_property(Cal->cal, ps);
 527
 528                                 /* Make a new dtend */
 529                                 ps = icalproperty_new_dtend(icaltime_add(next, dur));
 530
 531                                 /* and stick it somewhere */
 532                                 icalcomponent_add_property(Cal->cal, ps);
 533                         }
 534
 535                         if ( (Cal->event_start > calv->lower_bound)
 536                            && (Cal->event_start < calv->upper_bound) ) {
 537                                 Put(WCC->disp_cal_items,
 538                                         (char*) &Cal->event_start,
 539                                         sizeof(Cal->event_start),
 540                                         Cal,
 541                                         delete_cal
 542                                 );
 543                         }
 544                         else {
 545                                 delete_cal(Cal);
 546                         }
 547
 548                         /* If an upper bound is set, stop when we go out of scope */
 549                         if (final_recurrence > calv->upper_bound) stop_rr = 1;
 550                 }
 551         }
 552         icalrecur_iterator_free(ritr);
 553         /* lprintf(9, "Performed %d recurrences; final one is %s", num_recur, ctime(&final_recurrence)); */
 554
 555 }
 556
 557
 558
 559 /*
 560  * Display a task by itself (for editing)
 561  */
 562 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum, char *from,
 563                         int unread, struct calview *calv)
 564 {
 565         icalcomponent *vtodo;
 566         icalproperty *p;
 567         struct icaltimetype IcalTime;
 568         time_t now;
 569         int created_new_vtodo = 0;
 570         icalproperty_status todoStatus;
 571
 572         now = time(NULL);
 573
 574         if (supplied_vtodo != NULL) {
 575                 vtodo = supplied_vtodo;
 576
 577                 /**
 578                  * If we're looking at a fully encapsulated VCALENDAR
 579                  * rather than a VTODO component, attempt to use the first
 580                  * relevant VTODO subcomponent.  If there is none, the
 581                  * NULL returned by icalcomponent_get_first_component() will
 582                  * tell the next iteration of this function to create a
 583                  * new one.
 584                  */
 585                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 586                         display_edit_individual_task(
 587                                 icalcomponent_get_first_component(
 588                                         vtodo, ICAL_VTODO_COMPONENT
 589                                         ),
 590                                 msgnum, from, unread, calv
 591                                 );
 592                         return;
 593                 }
 594         }
 595         else {
 596                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 597                 created_new_vtodo = 1;
 598         }
 599
 600         // TODO: Can we take all this and move it into a template?
 601         output_headers(1, 1, 1, 0, 0, 0);
 602         wprintf("<!-- start task edit form -->");
 603         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 604         // Get summary early for title
 605         wprintf("<div class=\"box\">\n");
 606         wprintf("<div class=\"boxlabel\">");
 607         wprintf(_("Edit task"));
 608         wprintf("- ");
 609         if (p != NULL) {
 610                 escputs((char *)icalproperty_get_comment(p));
 611         }
 612         wprintf("</div>");
 613
 614         wprintf("<div class=\"boxcontent\">\n");
 615         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 616         wprintf("<div style=\"display: none;\">\n       ");
 617         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 618         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 619                 msgnum);
 620         wprintf("</div>");
 621         wprintf("<table class=\"calendar_background\"><tr><td>");
 622         wprintf("<TABLE STYLE=\"border: none;\">\n");
 623
 624         wprintf("<TR><TD>");
 625         wprintf(_("Summary:"));
 626         wprintf("</TD><TD>"
 627                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 628                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 629         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 630         if (p != NULL) {
 631                 escputs((char *)icalproperty_get_comment(p));
 632         }
 633         wprintf("\"></TD></TR>\n");
 634
 635         wprintf("<TR><TD>");
 636         wprintf(_("Start date:"));
 637         wprintf("</TD><TD>");
 638         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 639         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodtstart\" ID=\"nodtstart\" VALUE=\"NODTSTART\" ");
 640         if (p == NULL) {
 641                 wprintf("CHECKED=\"CHECKED\"");
 642         }
 643         wprintf(">");
 644         wprintf(_("No date"));
 645
 646         wprintf(" ");
 647         wprintf(_("or"));
 648         wprintf(" ");
 649         if (p != NULL) {
 650                 IcalTime = icalproperty_get_dtstart(p);
 651         }
 652         else
 653                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 654         display_icaltimetype_as_webform(&IcalTime, "dtstart", 0);
 655         wprintf("</TD></TR>\n");
 656
 657         wprintf("<TR><TD>");
 658         wprintf(_("Due date:"));
 659         wprintf("</TD><TD>");
 660         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 661         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodue\" ID=\"nodue\" VALUE=\"NODUE\"");
 662         if (p == NULL) {
 663                 wprintf("CHECKED=\"CHECKED\"");
 664         }
 665         wprintf(">");
 666         wprintf(_("No date"));
 667         wprintf(" ");
 668         wprintf(_("or"));
 669         wprintf(" ");
 670         if (p != NULL) {
 671                 IcalTime = icalproperty_get_due(p);
 672         }
 673         else
 674                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 675         display_icaltimetype_as_webform(&IcalTime, "due", 0);
 676
 677         wprintf("</TD></TR>\n");
 678         todoStatus = icalcomponent_get_status(vtodo);
 679         wprintf("<TR><TD>\n");
 680         wprintf(_("Completed:"));
 681         wprintf("</TD><TD>");
 682         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"status\" VALUE=\"COMPLETED\"");
 683         if (todoStatus == ICAL_STATUS_COMPLETED) {
 684                 wprintf(" CHECKED=\"CHECKED\"");
 685         }
 686         wprintf(" >");
 687         wprintf("</TD></TR>");
 688         // start category field
 689         p = icalcomponent_get_first_property(vtodo, ICAL_CATEGORIES_PROPERTY);
 690         wprintf("<TR><TD>");
 691         wprintf(_("Category:"));
 692         wprintf("</TD><TD>");
 693         wprintf("<INPUT TYPE=\"text\" NAME=\"category\" MAXLENGTH=\"32\" SIZE=\"32\" VALUE=\"");
 694         if (p != NULL) {
 695                 escputs((char *)icalproperty_get_categories(p));
 696         }
 697         wprintf("\">");
 698         wprintf("</TD></TR>\n   ");
 699         // end category field
 700         wprintf("<TR><TD>");
 701         wprintf(_("Description:"));
 702         wprintf("</TD><TD>");
 703         wprintf("<TEXTAREA NAME=\"description\" "
 704                 "ROWS=\"10\" COLS=\"80\">\n"
 705                 );
 706         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 707         if (p != NULL) {
 708                 escputs((char *)icalproperty_get_comment(p));
 709         }
 710         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 711
 712         wprintf("<SPAN STYLE=\"text-align: center;\">"
 713                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 714                 "&nbsp;&nbsp;"
 715                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 716                 "&nbsp;&nbsp;"
 717                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 718                 "</SPAN>\n",
 719                 _("Save"),
 720                 _("Delete"),
 721                 _("Cancel")
 722                 );
 723         wprintf("</td></tr></table>");
 724         wprintf("</FORM>\n");
 725         wprintf("</div></div></div>\n");
 726         wprintf("<!-- end task edit form -->");
 727         wDumpContent(1);
 728
 729         if (created_new_vtodo) {
 730                 icalcomponent_free(vtodo);
 731         }
 732 }
 733
 734 /*
 735  * \brief Save an edited task
 736  * \param supplied_vtodo the task to save
 737  * \param msgnum number of the mesage in our db
 738  */
 739 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum, char* from, int unread,
 740                                 struct calview *calv)
 741 {
 742         char buf[SIZ];
 743         int delete_existing = 0;
 744         icalproperty *prop;
 745         icalcomponent *vtodo, *encaps;
 746         int created_new_vtodo = 0;
 747         int i;
 748         int sequence = 0;
 749         struct icaltimetype t;
 750
 751         if (supplied_vtodo != NULL) {
 752                 vtodo = supplied_vtodo;
 753                 /**
 754                  * If we're looking at a fully encapsulated VCALENDAR
 755                  * rather than a VTODO component, attempt to use the first
 756                  * relevant VTODO subcomponent.  If there is none, the
 757                  * NULL returned by icalcomponent_get_first_component() will
 758                  * tell the next iteration of this function to create a
 759                  * new one.
 760                  */
 761                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 762                         save_individual_task(
 763                                 icalcomponent_get_first_component(
 764                                         vtodo, ICAL_VTODO_COMPONENT),
 765                                 msgnum, from, unread, calv
 766                                 );
 767                         return;
 768                 }
 769         }
 770         else {
 771                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 772                 created_new_vtodo = 1;
 773         }
 774
 775         if (havebstr("save_button")) {
 776
 777                 /** Replace values in the component with ones from the form */
 778
 779                 while (prop = icalcomponent_get_first_property(vtodo,
 780                                                                ICAL_SUMMARY_PROPERTY), prop != NULL) {
 781                         icalcomponent_remove_property(vtodo, prop);
 782                         icalproperty_free(prop);
 783                 }
 784                 if (havebstr("summary")) {
 785
 786                         icalcomponent_add_property(vtodo,
 787                                                    icalproperty_new_summary(bstr("summary")));
 788                 } else {
 789                         icalcomponent_add_property(vtodo,
 790                                                    icalproperty_new_summary("Untitled Task"));
 791                 }
 792
 793                 while (prop = icalcomponent_get_first_property(vtodo,
 794                                                                ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 795                         icalcomponent_remove_property(vtodo, prop);
 796                         icalproperty_free(prop);
 797                 }
 798                 if (havebstr("description")) {
 799                         icalcomponent_add_property(vtodo,
 800                                                    icalproperty_new_description(bstr("description")));
 801                 }
 802
 803                 while (prop = icalcomponent_get_first_property(vtodo,
 804                                                                ICAL_DTSTART_PROPERTY), prop != NULL) {
 805                         icalcomponent_remove_property(vtodo, prop);
 806                         icalproperty_free(prop);
 807                 }
 808                 if (IsEmptyStr(bstr("nodtstart"))) {
 809                         icaltime_from_webform(&t, "dtstart");
 810                         icalcomponent_add_property(vtodo,
 811                                                    icalproperty_new_dtstart(t)
 812                                 );
 813                 }
 814                 while(prop = icalcomponent_get_first_property(vtodo,
 815                                                               ICAL_STATUS_PROPERTY), prop != NULL) {
 816                         icalcomponent_remove_property(vtodo,prop);
 817                         icalproperty_free(prop);
 818                 }
 819                 if (havebstr("status")) {
 820                         icalproperty_status taskStatus = icalproperty_string_to_status(
 821                                 bstr("status"));
 822                         icalcomponent_set_status(vtodo, taskStatus);
 823                 }
 824                 while (prop = icalcomponent_get_first_property(vtodo,
 825                                                                ICAL_CATEGORIES_PROPERTY), prop != NULL) {
 826                         icalcomponent_remove_property(vtodo,prop);
 827                         icalproperty_free(prop);
 828                 }
 829                 if (!IsEmptyStr(bstr("category"))) {
 830                         prop = icalproperty_new_categories(bstr("category"));
 831                         icalcomponent_add_property(vtodo,prop);
 832                 }
 833                 while (prop = icalcomponent_get_first_property(vtodo,
 834                                                                ICAL_DUE_PROPERTY), prop != NULL) {
 835                         icalcomponent_remove_property(vtodo, prop);
 836                         icalproperty_free(prop);
 837                 }
 838                 if (IsEmptyStr(bstr("nodue"))) {
 839                         icaltime_from_webform(&t, "due");
 840                         icalcomponent_add_property(vtodo,
 841                                                    icalproperty_new_due(t)
 842                                 );
 843                 }
 844                 /** Give this task a UID if it doesn't have one. */
 845                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 846                 if (icalcomponent_get_first_property(vtodo,
 847                                                      ICAL_UID_PROPERTY) == NULL) {
 848                         generate_uuid(buf);
 849                         icalcomponent_add_property(vtodo,
 850                                                    icalproperty_new_uid(buf)
 851                                 );
 852                 }
 853
 854                 /** Increment the sequence ID */
 855                 lprintf(9, "Increment the sequence ID\n");
 856                 while (prop = icalcomponent_get_first_property(vtodo,
 857                                                                ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 858                         i = icalproperty_get_sequence(prop);
 859                         lprintf(9, "Sequence was %d\n", i);
 860                         if (i > sequence) sequence = i;
 861                         icalcomponent_remove_property(vtodo, prop);
 862                         icalproperty_free(prop);
 863                 }
 864                 ++sequence;
 865                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 866                 icalcomponent_add_property(vtodo,
 867                                            icalproperty_new_sequence(sequence)
 868                         );
 869
 870                 /**
 871                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 872                  * for two reasons: one, it's easier to just free the whole thing
 873                  * when we're done instead of unbundling, but more importantly, we
 874                  * can't encapsulate something that may already be encapsulated
 875                  * somewhere else.
 876                  */
 877                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 878                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 879
 880                 /* Serialize it and save it to the message base */
 881                 serv_puts("ENT0 1|||4");
 882                 serv_getln(buf, sizeof buf);
 883                 if (buf[0] == '4') {
 884                         serv_puts("Content-type: text/calendar");
 885                         serv_puts("");
 886                         serv_puts(icalcomponent_as_ical_string(encaps));
 887                         serv_puts("000");
 888
 889                         /**
 890                          * Probably not necessary; the server will see the UID
 891                          * of the object and delete the old one anyway, but
 892                          * just in case...
 893                          */
 894                         delete_existing = 1;
 895                 }
 896                 icalcomponent_free(encaps);
 897         }
 898
 899         /**
 900          * If the user clicked 'Delete' then explicitly delete the message.
 901          */
 902         if (havebstr("delete_button")) {
 903                 delete_existing = 1;
 904         }
 905
 906         if ( (delete_existing) && (msgnum > 0L) ) {
 907                 serv_printf("DELE %ld", lbstr("msgnum"));
 908                 serv_getln(buf, sizeof buf);
 909         }
 910
 911         if (created_new_vtodo) {
 912                 icalcomponent_free(vtodo);
 913         }
 914
 915         /** Go back to the task list */
 916         readloop("readfwd");
 917 }
 918
 919
 920
 921 /*
 922  * Code common to all icalendar display handlers.  Given a message number and a MIME
 923  * type, we load the message and hunt for that MIME type.  If found, we load
 924  * the relevant part, deserialize it into a libical component, filter it for
 925  * the requested object type, and feed it to the specified handler.
 926  */
 927 void load_ical_object(long msgnum, int unread,
 928                            icalcomponent_kind which_kind,
 929                            void (*callback)(icalcomponent *, long, char*, int, struct calview *),
 930                            struct calview *calv
 931         )
 932 {
 933         char buf[1024];
 934         char from[128] = "";
 935         char mime_partnum[256];
 936         char mime_filename[256];
 937         char mime_content_type[256];
 938         char mime_disposition[256];
 939         int mime_length;
 940         char relevant_partnum[256];
 941         char *relevant_source = NULL;
 942         icalcomponent *cal, *c;
 943
 944         relevant_partnum[0] = '\0';
 945         sprintf(buf, "MSG4 %ld", msgnum);       /* we need the mime headers */
 946         serv_puts(buf);
 947         serv_getln(buf, sizeof buf);
 948         if (buf[0] != '1') return;
 949
 950         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 951                 if (!strncasecmp(buf, "part=", 5)) {
 952                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 953                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 954                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 955                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 956                         mime_length = extract_int(&buf[5], 5);
 957
 958                         if (  (!strcasecmp(mime_content_type, "text/calendar"))
 959                               || (!strcasecmp(mime_content_type, "application/ics"))
 960                               || (!strcasecmp(mime_content_type, "text/vtodo"))
 961                                 ) {
 962                                 strcpy(relevant_partnum, mime_partnum);
 963                         }
 964                 }
 965                 else if (!strncasecmp(buf, "from=", 4)) {
 966                         extract_token(from, buf, 1, '=', sizeof(from));
 967                 }
 968         }
 969
 970         if (!IsEmptyStr(relevant_partnum)) {
 971                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 972                 if (relevant_source != NULL) {
 973
 974                         cal = icalcomponent_new_from_string(relevant_source);
 975                         if (cal != NULL) {
 976
 977                                 /* A which_kind of (-1) means just load the whole thing */
 978                                 if (which_kind == (-1)) {
 979                                         callback(cal, msgnum, from, unread, calv);
 980                                 }
 981
 982                                 /* Otherwise recurse and hunt */
 983                                 else {
 984
 985                                         /* Simple components of desired type */
 986                                         if (icalcomponent_isa(cal) == which_kind) {
 987                                                 callback(cal, msgnum, from, unread, calv);
 988                                         }
 989
 990                                         /* Subcomponents of desired type */
 991                                         for (c = icalcomponent_get_first_component(cal, which_kind);
 992                                         (c != 0);
 993                                         c = icalcomponent_get_next_component(cal, which_kind)) {
 994                                                 callback(c, msgnum, from, unread, calv);
 995                                         }
 996
 997                                 }
 998
 999                                 icalcomponent_free(cal);
1000                         }
1001                         free(relevant_source);
1002                 }
1003         }
1004         icalmemory_free_ring();
1005 }
1006
1007 /*
1008  * Display a calendar item
1009  */
1010 void load_calendar_item(message_summary *Msg, int unread, struct calview *c) {
1011         load_ical_object(Msg->msgnum, unread, ICAL_VEVENT_COMPONENT, display_individual_cal, c);
1012         /* load_ical_object(Msg->msgnum, unread, (-1), display_individual_cal, c); */
1013 }
1014
1015 /*
1016  * Display task view
1017  */
1018 void display_task(message_summary *Msg, int unread) {
1019         load_ical_object(Msg->msgnum, unread, ICAL_VTODO_COMPONENT, display_individual_cal, NULL);
1020 }
1021
1022 /*
1023  * Display the editor component for a task
1024  */
1025 void display_edit_task(void) {
1026         long msgnum = 0L;
1027
1028         /* Force change the room if we have to */
1029         if (havebstr("taskrm")) {
1030                 gotoroom((char *)bstr("taskrm"));
1031         }
1032
1033         msgnum = lbstr("msgnum");
1034         if (msgnum > 0L) {
1035                 /* existing task */
1036                 load_ical_object(msgnum, 0,
1037                                       ICAL_VTODO_COMPONENT,
1038                                       display_edit_individual_task,
1039                                       NULL
1040                 );
1041         }
1042         else {
1043                 /* new task */
1044                 display_edit_individual_task(NULL, 0L, "", 0, NULL);
1045         }
1046 }
1047
1048 /*
1049  * save an edited task
1050  */
1051 void save_task(void) {
1052         long msgnum = 0L;
1053         msgnum = lbstr("msgnum");
1054         if (msgnum > 0L) {
1055                 load_ical_object(msgnum, 0, ICAL_VTODO_COMPONENT, save_individual_task, NULL);
1056         }
1057         else {
1058                 save_individual_task(NULL, 0L, "", 0, NULL);
1059         }
1060 }
1061
1062 /*
1063  * display the editor component for an event
1064  */
1065 void display_edit_event(void) {
1066         long msgnum = 0L;
1067
1068         msgnum = lbstr("msgnum");
1069         if (msgnum > 0L) {
1070                 /* existing event */
1071                 load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, display_edit_individual_event, NULL);
1072         }
1073         else {
1074                 /* new event */
1075                 display_edit_individual_event(NULL, 0L, "", 0, NULL);
1076         }
1077 }
1078
1079 /*
1080  * save an edited event
1081  */
1082 void save_event(void) {
1083         long msgnum = 0L;
1084
1085         msgnum = lbstr("msgnum");
1086
1087         if (msgnum > 0L) {
1088                 load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, save_individual_event, NULL);
1089         }
1090         else {
1091                 save_individual_event(NULL, 0L, "", 0, NULL);
1092         }
1093 }
1094
1095
1096
1097
1098
1099 /*
1100  * Anonymous request of freebusy data for a user
1101  */
1102 void do_freebusy(const char *req) {
1103         char who[SIZ];
1104         char buf[SIZ];
1105         int len;
1106         long lines;
1107
1108         extract_token(who, req, 1, ' ', sizeof who);
1109         if (!strncasecmp(who, "/freebusy/", 10)) {
1110                 strcpy(who, &who[10]);
1111         }
1112         unescape_input(who);
1113
1114         len = strlen(who);
1115         if ( (!strcasecmp(&who[len-4], ".vcf"))
1116              || (!strcasecmp(&who[len-4], ".ifb"))
1117              || (!strcasecmp(&who[len-4], ".vfb")) ) {
1118                 who[len-4] = 0;
1119         }
1120
1121         lprintf(9, "freebusy requested for <%s>\n", who);
1122         serv_printf("ICAL freebusy|%s", who);
1123         serv_getln(buf, sizeof buf);
1124
1125         if (buf[0] != '1') {
1126                 hprintf("HTTP/1.1 404 %s\n", &buf[4]);
1127                 output_headers(0, 0, 0, 0, 0, 0);
1128                 hprintf("Content-Type: text/plain\r\n");
1129                 wprintf("%s\n", &buf[4]);
1130                 end_burst();
1131                 return;
1132         }
1133
1134         read_server_text(WC->WBuf, &lines);
1135         http_transmit_thing("text/calendar", 0);
1136 }
1137
1138
1139
1140
1141
1142 void
1143 InitModule_CALENDAR
1144 (void)
1145 {
1146         WebcitAddUrlHandler(HKEY("display_edit_task"), display_edit_task, 0);
1147         WebcitAddUrlHandler(HKEY("save_task"), save_task, 0);
1148         WebcitAddUrlHandler(HKEY("display_edit_event"), display_edit_event, 0);
1149         WebcitAddUrlHandler(HKEY("save_event"), save_event, 0);
1150         WebcitAddUrlHandler(HKEY("respond_to_request"), respond_to_request, 0);
1151         WebcitAddUrlHandler(HKEY("handle_rsvp"), handle_rsvp, 0);
1152 }