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(icalcomponent *cal,
  20                         int recursion_level,
  21                         long msgnum,
  22                         char *cal_partnum)
  23 {
  24         icalcomponent *c;
  25         icalproperty *method = NULL;
  26         icalproperty_method the_method = ICAL_METHOD_NONE;
  27         icalproperty *p;
  28         struct icaltimetype t;
  29         time_t tt;
  30         char buf[256];
  31         char conflict_name[256];
  32         char conflict_message[256];
  33         int is_update = 0;
  34         char divname[32];
  35         static int divcount = 0;
  36
  37         sprintf(divname, "rsvp%04x", ++divcount);
  38
  39         /* Leading HTML for the display of this object */
  40         if (recursion_level == 0) {
  41                 wprintf("<div class=\"mimepart\">\n");
  42         }
  43
  44         /* Look for a method */
  45         method = icalcomponent_get_first_property(cal, ICAL_METHOD_PROPERTY);
  46
  47         /* See what we need to do with this */
  48         if (method != NULL) {
  49                 the_method = icalproperty_get_method(method);
  50                 char *title;
  51
  52                 wprintf("<div id=\"%s_title\">", divname);
  53                 wprintf("<img src=\"static/calarea_48x.gif\">");
  54                 wprintf("<span>");
  55                 switch(the_method) {
  56                 case ICAL_METHOD_REQUEST:
  57                         title = _("Meeting invitation");
  58                         break;
  59                 case ICAL_METHOD_REPLY:
  60                         title = _("Attendee's reply to your invitation");
  61                         break;
  62                 case ICAL_METHOD_PUBLISH:
  63                         title = _("Published event");
  64                         break;
  65                 default:
  66                         title = _("This is an unknown type of calendar item.");
  67                         break;
  68                 }
  69                 wprintf("</span>");
  70
  71                 wprintf("&nbsp;&nbsp;%s",title);
  72                 wprintf("</div>");
  73         }
  74
  75         wprintf("<dl>");
  76         p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
  77         if (p != NULL) {
  78                 wprintf("<dt>");
  79                 wprintf(_("Summary:"));
  80                 wprintf("</dt><dd>");
  81                 escputs((char *)icalproperty_get_comment(p));
  82                 wprintf("</dd>\n");
  83         }
  84
  85         p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
  86         if (p != NULL) {
  87                 wprintf("<dt>");
  88                 wprintf(_("Location:"));
  89                 wprintf("</dt><dd>");
  90                 escputs((char *)icalproperty_get_comment(p));
  91                 wprintf("</dd>\n");
  92         }
  93
  94         /*
  95          * Only show start/end times if we're actually looking at the VEVENT
  96          * component.  Otherwise it shows bogus dates for things like timezone.
  97          */
  98         if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
  99
 100                 p = icalcomponent_get_first_property(cal, ICAL_DTSTART_PROPERTY);
 101                 if (p != NULL) {
 102                         t = icalproperty_get_dtstart(p);
 103
 104                         if (t.is_date) {
 105                                 struct tm d_tm;
 106                                 char d_str[32];
 107                                 memset(&d_tm, 0, sizeof d_tm);
 108                                 d_tm.tm_year = t.year - 1900;
 109                                 d_tm.tm_mon = t.month - 1;
 110                                 d_tm.tm_mday = t.day;
 111                                 wc_strftime(d_str, sizeof d_str, "%x", &d_tm);
 112                                 wprintf("<dt>");
 113                                 wprintf(_("Date:"));
 114                                 wprintf("</dt><dd>%s</dd>", d_str);
 115                         }
 116                         else {
 117                                 tt = icaltime_as_timet(t);
 118                                 webcit_fmt_date(buf, tt, 0);
 119                                 wprintf("<dt>");
 120                                 wprintf(_("Starting date/time:"));
 121                                 wprintf("</dt><dd>%s</dd>", buf);
 122                         }
 123                 }
 124
 125                 p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
 126                 if (p != NULL) {
 127                         t = icalproperty_get_dtend(p);
 128                         tt = icaltime_as_timet(t);
 129                         webcit_fmt_date(buf, tt, 0);
 130                         wprintf("<dt>");
 131                         wprintf(_("Ending date/time:"));
 132                         wprintf("</dt><dd>%s</dd>", buf);
 133                 }
 134
 135         }
 136
 137         p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
 138         if (p != NULL) {
 139                 wprintf("<dt>");
 140                 wprintf(_("Description:"));
 141                 wprintf("</dt><dd>");
 142                 escputs((char *)icalproperty_get_comment(p));
 143                 wprintf("</dd>\n");
 144         }
 145
 146         /* If the component has attendees, iterate through them. */
 147         for (p = icalcomponent_get_first_property(cal, ICAL_ATTENDEE_PROPERTY);
 148              (p != NULL);
 149              p = icalcomponent_get_next_property(cal, ICAL_ATTENDEE_PROPERTY)) {
 150                 wprintf("<dt>");
 151                 wprintf(_("Attendee:"));
 152                 wprintf("</dt><dd>");
 153                 safestrncpy(buf, icalproperty_get_attendee(p), sizeof buf);
 154                 if (!strncasecmp(buf, "MAILTO:", 7)) {
 155
 156                         /** screen name or email address */
 157                         strcpy(buf, &buf[7]);
 158                         striplt(buf);
 159                         escputs(buf);
 160                         wprintf(" ");
 161
 162                         /** participant status */
 163                         partstat_as_string(buf, p);
 164                         escputs(buf);
 165                 }
 166                 wprintf("</dd>\n");
 167         }
 168
 169         /* If the component has subcomponents, recurse through them. */
 170         for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
 171              (c != 0);
 172              c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
 173                 /* Recursively process subcomponent */
 174                 cal_process_object(c, recursion_level+1, msgnum, cal_partnum);
 175         }
 176
 177         /* If this is a REQUEST, display conflicts and buttons */
 178         if (the_method == ICAL_METHOD_REQUEST) {
 179
 180                 /* Check for conflicts */
 181                 lprintf(9, "Checking server calendar for conflicts...\n");
 182                 serv_printf("ICAL conflicts|%ld|%s|", msgnum, cal_partnum);
 183                 serv_getln(buf, sizeof buf);
 184                 if (buf[0] == '1') {
 185                         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 186                                 extract_token(conflict_name, buf, 3, '|', sizeof conflict_name);
 187                                 is_update = extract_int(buf, 4);
 188
 189                                 if (is_update) {
 190                                         snprintf(conflict_message, sizeof conflict_message,
 191                                                  _("This is an update of '%s' which is already in your calendar."), conflict_name);
 192                                 }
 193                                 else {
 194                                         snprintf(conflict_message, sizeof conflict_message,
 195                                                  _("This event would conflict with '%s' which is already in your calendar."), conflict_name);
 196                                 }
 197
 198                                 wprintf("<dt>%s",
 199                                         (is_update ?
 200                                          _("Update:") :
 201                                          _("CONFLICT:")
 202                                                 )
 203                                         );
 204                                 wprintf("</dt><dd>");
 205                                 escputs(conflict_message);
 206                                 wprintf("</dd>\n");
 207                         }
 208                 }
 209                 lprintf(9, "...done.\n");
 210
 211                 wprintf("</dl>");
 212
 213                 /* Display the Accept/Decline buttons */
 214                 wprintf("<p id=\"%s_question\">"
 215                         "%s "
 216                         "&nbsp;&nbsp;&nbsp;<span class=\"button_link\"> "
 217                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Accept');\">%s</a>"
 218                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 219                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Tentative');\">%s</a>"
 220                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 221                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Decline');\">%s</a>"
 222                         "</span></p>\n",
 223                         divname,
 224                         _("How would you like to respond to this invitation?"),
 225                         divname, divname, msgnum, cal_partnum, _("Accept"),
 226                         divname, divname, msgnum, cal_partnum, _("Tentative"),
 227                         divname, divname, msgnum, cal_partnum, _("Decline")
 228                         );
 229
 230         }
 231
 232         /* If this is a REPLY, display update button */
 233         if (the_method == ICAL_METHOD_REPLY) {
 234
 235                 /* In the future, if we want to validate this object before
 236                  * continuing, we can do it this way:
 237                  serv_printf("ICAL whatever|%ld|%s|", msgnum, cal_partnum);
 238                  serv_getln(buf, sizeof buf);
 239                  }
 240                 ***********/
 241
 242                 /* Display the update buttons */
 243                 wprintf("<p id=\"%s_question\" >"
 244                         "%s "
 245                         "&nbsp;&nbsp;&nbsp;<span class=\"button_link\"> "
 246                         "<a href=\"javascript:HandleRSVP('%s_question','%s_title','%ld','%s','Update');\">%s</a>"
 247                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 248                         "<a href=\"javascript:HandleRSVP('%s_question','%s_title','%ld','%s','Ignore');\">%s</a>"
 249                         "</span></p>\n",
 250                         divname,
 251                         _("Click <i>Update</i> to accept this reply and update your calendar."),
 252                         divname, divname, msgnum, cal_partnum, _("Update"),
 253                         divname, divname, msgnum, cal_partnum, _("Ignore")
 254                         );
 255
 256         }
 257
 258         /* Trailing HTML for the display of this object */
 259         if (recursion_level == 0) {
 260                 wprintf("<p>&nbsp;</p></div>\n");
 261         }
 262 }
 263
 264
 265 /**
 266  * \brief process calendar mail atachment
 267  * Deserialize a calendar object in a message so it can be processed.
 268  * (This is the main entry point for these things)
 269  * \param part_source the part of the message we want to parse
 270  * \param msgnum number of the mesage in our db
 271  * \param cal_partnum the number of the calendar item
 272  */
 273 void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum)
 274 {
 275         icalcomponent *cal;
 276
 277         cal = icalcomponent_new_from_string(part_source);
 278
 279         if (cal == NULL) {
 280                 wprintf(_("There was an error parsing this calendar item."));
 281                 wprintf("<br />\n");
 282                 return;
 283         }
 284
 285         ical_dezonify(cal);
 286         cal_process_object(cal, 0, msgnum, cal_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         ical_dezonify(Cal->cal);
 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         }
 460
 461         /* Do the same for the ending date and time.  It makes the day view much easier to render. */
 462         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 463         if (ps != NULL) {
 464                 dtend = icalproperty_get_dtstart(ps);
 465                 Cal->event_end = icaltime_as_timet(dtend);
 466         }
 467
 468         /* Store it in the hash list. */
 469         Put(WCC->disp_cal_items,
 470             (char*) &Cal->event_start,
 471             sizeof(Cal->event_start),
 472             Cal,
 473             delete_cal);
 474
 475         /* handle recurring events */
 476
 477         if (icaltime_is_null_time(dtstart)) return;     /* Can't recur without a start time */
 478
 479         if (!icaltime_is_null_time(dtend)) {            /* Need duration for recurrences */
 480                 dur = icaltime_subtract(dtend, dtstart);
 481         }
 482
 483         /*
 484          * Just let libical iterate the recurrence, and keep looping back to the top of this function,
 485          * adding new hash entries that all point back to the same msgnum, until either the iteration
 486          * stops or some outer bound is reached.  The display code will automatically do the Right Thing.
 487          */
 488
 489         rrule = icalcomponent_get_first_property(Cal->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                         ical_dezonify(Cal->cal);
 511                         Cal->cal_msgnum = msgnum;
 512
 513                         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 514                         if (ps != NULL) {
 515                                 icalcomponent_remove_property(Cal->cal, ps);
 516                                 ps = icalproperty_new_dtstart(next);
 517                                 icalcomponent_add_property(Cal->cal, ps);
 518                                 Cal->event_start = icaltime_as_timet(next);
 519                                 final_recurrence = Cal->event_start;
 520                         }
 521
 522                         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 523                         if (ps != NULL) {
 524                                 icalcomponent_remove_property(Cal->cal, ps);
 525
 526                                 /* Make a new dtend */
 527                                 ps = icalproperty_new_dtend(icaltime_add(next, dur));
 528
 529                                 /* and stick it somewhere */
 530                                 icalcomponent_add_property(Cal->cal, ps);
 531                         }
 532
 533                         if ( (Cal->event_start > calv->lower_bound)
 534                            && (Cal->event_start < calv->upper_bound) ) {
 535                                 Put(WCC->disp_cal_items,
 536                                         (char*) &Cal->event_start,
 537                                         sizeof(Cal->event_start),
 538                                         Cal,
 539                                         delete_cal
 540                                 );
 541                         }
 542                         else {
 543                                 delete_cal(Cal);
 544                         }
 545
 546                         /* If an upper bound is set, stop when we go out of scope */
 547                         if (final_recurrence > calv->upper_bound) stop_rr = 1;
 548                 }
 549         }
 550         icalrecur_iterator_free(ritr);
 551         /* lprintf(9, "Performed %d recurrences; final one is %s", num_recur, ctime(&final_recurrence)); */
 552
 553 }
 554
 555
 556
 557 /*
 558  * Display a task by itself (for editing)
 559  */
 560 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum, char *from,
 561                         int unread, struct calview *calv)
 562 {
 563         icalcomponent *vtodo;
 564         icalproperty *p;
 565         struct icaltimetype IcalTime;
 566         time_t now;
 567         int created_new_vtodo = 0;
 568         icalproperty_status todoStatus;
 569
 570         now = time(NULL);
 571
 572         if (supplied_vtodo != NULL) {
 573                 vtodo = supplied_vtodo;
 574
 575                 /**
 576                  * If we're looking at a fully encapsulated VCALENDAR
 577                  * rather than a VTODO component, attempt to use the first
 578                  * relevant VTODO subcomponent.  If there is none, the
 579                  * NULL returned by icalcomponent_get_first_component() will
 580                  * tell the next iteration of this function to create a
 581                  * new one.
 582                  */
 583                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 584                         display_edit_individual_task(
 585                                 icalcomponent_get_first_component(
 586                                         vtodo, ICAL_VTODO_COMPONENT
 587                                         ),
 588                                 msgnum, from, unread, calv
 589                                 );
 590                         return;
 591                 }
 592         }
 593         else {
 594                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 595                 created_new_vtodo = 1;
 596         }
 597
 598         // TODO: Can we take all this and move it into a template?
 599         output_headers(1, 1, 1, 0, 0, 0);
 600         wprintf("<!-- start task edit form -->");
 601         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 602         // Get summary early for title
 603         wprintf("<div class=\"box\">\n");
 604         wprintf("<div class=\"boxlabel\">");
 605         wprintf(_("Edit task"));
 606         wprintf("- ");
 607         if (p != NULL) {
 608                 escputs((char *)icalproperty_get_comment(p));
 609         }
 610         wprintf("</div>");
 611
 612         wprintf("<div class=\"boxcontent\">\n");
 613         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 614         wprintf("<div style=\"display: none;\">\n       ");
 615         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 616         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 617                 msgnum);
 618         wprintf("</div>");
 619         wprintf("<table class=\"calendar_background\"><tr><td>");
 620         wprintf("<TABLE STYLE=\"border: none;\">\n");
 621
 622         wprintf("<TR><TD>");
 623         wprintf(_("Summary:"));
 624         wprintf("</TD><TD>"
 625                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 626                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 627         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 628         if (p != NULL) {
 629                 escputs((char *)icalproperty_get_comment(p));
 630         }
 631         wprintf("\"></TD></TR>\n");
 632
 633         wprintf("<TR><TD>");
 634         wprintf(_("Start date:"));
 635         wprintf("</TD><TD>");
 636         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 637         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodtstart\" ID=\"nodtstart\" VALUE=\"NODTSTART\" ");
 638         if (p == NULL) {
 639                 wprintf("CHECKED=\"CHECKED\"");
 640         }
 641         wprintf(">");
 642         wprintf(_("No date"));
 643
 644         wprintf(" ");
 645         wprintf(_("or"));
 646         wprintf(" ");
 647         if (p != NULL) {
 648                 IcalTime = icalproperty_get_dtstart(p);
 649         }
 650         else
 651                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 652         display_icaltimetype_as_webform(&IcalTime, "dtstart", 0);
 653         wprintf("</TD></TR>\n");
 654
 655         wprintf("<TR><TD>");
 656         wprintf(_("Due date:"));
 657         wprintf("</TD><TD>");
 658         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 659         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodue\" ID=\"nodue\" VALUE=\"NODUE\"");
 660         if (p == NULL) {
 661                 wprintf("CHECKED=\"CHECKED\"");
 662         }
 663         wprintf(">");
 664         wprintf(_("No date"));
 665         wprintf(" ");
 666         wprintf(_("or"));
 667         wprintf(" ");
 668         if (p != NULL) {
 669                 IcalTime = icalproperty_get_due(p);
 670         }
 671         else
 672                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 673         display_icaltimetype_as_webform(&IcalTime, "due", 0);
 674
 675         wprintf("</TD></TR>\n");
 676         todoStatus = icalcomponent_get_status(vtodo);
 677         wprintf("<TR><TD>\n");
 678         wprintf(_("Completed:"));
 679         wprintf("</TD><TD>");
 680         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"status\" VALUE=\"COMPLETED\"");
 681         if (todoStatus == ICAL_STATUS_COMPLETED) {
 682                 wprintf(" CHECKED=\"CHECKED\"");
 683         }
 684         wprintf(" >");
 685         wprintf("</TD></TR>");
 686         // start category field
 687         p = icalcomponent_get_first_property(vtodo, ICAL_CATEGORIES_PROPERTY);
 688         wprintf("<TR><TD>");
 689         wprintf(_("Category:"));
 690         wprintf("</TD><TD>");
 691         wprintf("<INPUT TYPE=\"text\" NAME=\"category\" MAXLENGTH=\"32\" SIZE=\"32\" VALUE=\"");
 692         if (p != NULL) {
 693                 escputs((char *)icalproperty_get_categories(p));
 694         }
 695         wprintf("\">");
 696         wprintf("</TD></TR>\n   ");
 697         // end category field
 698         wprintf("<TR><TD>");
 699         wprintf(_("Description:"));
 700         wprintf("</TD><TD>");
 701         wprintf("<TEXTAREA NAME=\"description\" "
 702                 "ROWS=\"10\" COLS=\"80\">\n"
 703                 );
 704         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 705         if (p != NULL) {
 706                 escputs((char *)icalproperty_get_comment(p));
 707         }
 708         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 709
 710         wprintf("<SPAN STYLE=\"text-align: center;\">"
 711                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 712                 "&nbsp;&nbsp;"
 713                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 714                 "&nbsp;&nbsp;"
 715                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 716                 "</SPAN>\n",
 717                 _("Save"),
 718                 _("Delete"),
 719                 _("Cancel")
 720                 );
 721         wprintf("</td></tr></table>");
 722         wprintf("</FORM>\n");
 723         wprintf("</div></div></div>\n");
 724         wprintf("<!-- end task edit form -->");
 725         wDumpContent(1);
 726
 727         if (created_new_vtodo) {
 728                 icalcomponent_free(vtodo);
 729         }
 730 }
 731
 732 /*
 733  * \brief Save an edited task
 734  * \param supplied_vtodo the task to save
 735  * \param msgnum number of the mesage in our db
 736  */
 737 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum, char* from, int unread,
 738                                 struct calview *calv)
 739 {
 740         char buf[SIZ];
 741         int delete_existing = 0;
 742         icalproperty *prop;
 743         icalcomponent *vtodo, *encaps;
 744         int created_new_vtodo = 0;
 745         int i;
 746         int sequence = 0;
 747         struct icaltimetype t;
 748
 749         if (supplied_vtodo != NULL) {
 750                 vtodo = supplied_vtodo;
 751                 /**
 752                  * If we're looking at a fully encapsulated VCALENDAR
 753                  * rather than a VTODO component, attempt to use the first
 754                  * relevant VTODO subcomponent.  If there is none, the
 755                  * NULL returned by icalcomponent_get_first_component() will
 756                  * tell the next iteration of this function to create a
 757                  * new one.
 758                  */
 759                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 760                         save_individual_task(
 761                                 icalcomponent_get_first_component(
 762                                         vtodo, ICAL_VTODO_COMPONENT),
 763                                 msgnum, from, unread, calv
 764                                 );
 765                         return;
 766                 }
 767         }
 768         else {
 769                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 770                 created_new_vtodo = 1;
 771         }
 772
 773         if (havebstr("save_button")) {
 774
 775                 /** Replace values in the component with ones from the form */
 776
 777                 while (prop = icalcomponent_get_first_property(vtodo,
 778                                                                ICAL_SUMMARY_PROPERTY), prop != NULL) {
 779                         icalcomponent_remove_property(vtodo, prop);
 780                         icalproperty_free(prop);
 781                 }
 782                 if (havebstr("summary")) {
 783
 784                         icalcomponent_add_property(vtodo,
 785                                                    icalproperty_new_summary(bstr("summary")));
 786                 } else {
 787                         icalcomponent_add_property(vtodo,
 788                                                    icalproperty_new_summary("Untitled Task"));
 789                 }
 790
 791                 while (prop = icalcomponent_get_first_property(vtodo,
 792                                                                ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 793                         icalcomponent_remove_property(vtodo, prop);
 794                         icalproperty_free(prop);
 795                 }
 796                 if (havebstr("description")) {
 797                         icalcomponent_add_property(vtodo,
 798                                                    icalproperty_new_description(bstr("description")));
 799                 }
 800
 801                 while (prop = icalcomponent_get_first_property(vtodo,
 802                                                                ICAL_DTSTART_PROPERTY), prop != NULL) {
 803                         icalcomponent_remove_property(vtodo, prop);
 804                         icalproperty_free(prop);
 805                 }
 806                 if (IsEmptyStr(bstr("nodtstart"))) {
 807                         icaltime_from_webform(&t, "dtstart");
 808                         icalcomponent_add_property(vtodo,
 809                                                    icalproperty_new_dtstart(t)
 810                                 );
 811                 }
 812                 while(prop = icalcomponent_get_first_property(vtodo,
 813                                                               ICAL_STATUS_PROPERTY), prop != NULL) {
 814                         icalcomponent_remove_property(vtodo,prop);
 815                         icalproperty_free(prop);
 816                 }
 817                 if (havebstr("status")) {
 818                         icalproperty_status taskStatus = icalproperty_string_to_status(
 819                                 bstr("status"));
 820                         icalcomponent_set_status(vtodo, taskStatus);
 821                 }
 822                 while (prop = icalcomponent_get_first_property(vtodo,
 823                                                                ICAL_CATEGORIES_PROPERTY), prop != NULL) {
 824                         icalcomponent_remove_property(vtodo,prop);
 825                         icalproperty_free(prop);
 826                 }
 827                 if (!IsEmptyStr(bstr("category"))) {
 828                         prop = icalproperty_new_categories(bstr("category"));
 829                         icalcomponent_add_property(vtodo,prop);
 830                 }
 831                 while (prop = icalcomponent_get_first_property(vtodo,
 832                                                                ICAL_DUE_PROPERTY), prop != NULL) {
 833                         icalcomponent_remove_property(vtodo, prop);
 834                         icalproperty_free(prop);
 835                 }
 836                 if (IsEmptyStr(bstr("nodue"))) {
 837                         icaltime_from_webform(&t, "due");
 838                         icalcomponent_add_property(vtodo,
 839                                                    icalproperty_new_due(t)
 840                                 );
 841                 }
 842                 /** Give this task a UID if it doesn't have one. */
 843                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 844                 if (icalcomponent_get_first_property(vtodo,
 845                                                      ICAL_UID_PROPERTY) == NULL) {
 846                         generate_uuid(buf);
 847                         icalcomponent_add_property(vtodo,
 848                                                    icalproperty_new_uid(buf)
 849                                 );
 850                 }
 851
 852                 /** Increment the sequence ID */
 853                 lprintf(9, "Increment the sequence ID\n");
 854                 while (prop = icalcomponent_get_first_property(vtodo,
 855                                                                ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 856                         i = icalproperty_get_sequence(prop);
 857                         lprintf(9, "Sequence was %d\n", i);
 858                         if (i > sequence) sequence = i;
 859                         icalcomponent_remove_property(vtodo, prop);
 860                         icalproperty_free(prop);
 861                 }
 862                 ++sequence;
 863                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 864                 icalcomponent_add_property(vtodo,
 865                                            icalproperty_new_sequence(sequence)
 866                         );
 867
 868                 /**
 869                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 870                  * for two reasons: one, it's easier to just free the whole thing
 871                  * when we're done instead of unbundling, but more importantly, we
 872                  * can't encapsulate something that may already be encapsulated
 873                  * somewhere else.
 874                  */
 875                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 876                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 877
 878                 /* Serialize it and save it to the message base */
 879                 serv_puts("ENT0 1|||4");
 880                 serv_getln(buf, sizeof buf);
 881                 if (buf[0] == '4') {
 882                         serv_puts("Content-type: text/calendar");
 883                         serv_puts("");
 884                         serv_puts(icalcomponent_as_ical_string(encaps));
 885                         serv_puts("000");
 886
 887                         /**
 888                          * Probably not necessary; the server will see the UID
 889                          * of the object and delete the old one anyway, but
 890                          * just in case...
 891                          */
 892                         delete_existing = 1;
 893                 }
 894                 icalcomponent_free(encaps);
 895         }
 896
 897         /**
 898          * If the user clicked 'Delete' then explicitly delete the message.
 899          */
 900         if (havebstr("delete_button")) {
 901                 delete_existing = 1;
 902         }
 903
 904         if ( (delete_existing) && (msgnum > 0L) ) {
 905                 serv_printf("DELE %ld", lbstr("msgnum"));
 906                 serv_getln(buf, sizeof buf);
 907         }
 908
 909         if (created_new_vtodo) {
 910                 icalcomponent_free(vtodo);
 911         }
 912
 913         /** Go back to the task list */
 914         readloop("readfwd");
 915 }
 916
 917
 918
 919 /*
 920  * Code common to all icalendar display handlers.  Given a message number and a MIME
 921  * type, we load the message and hunt for that MIME type.  If found, we load
 922  * the relevant part, deserialize it into a libical component, filter it for
 923  * the requested object type, and feed it to the specified handler.
 924  */
 925 void load_ical_object(long msgnum, int unread,
 926                            icalcomponent_kind which_kind,
 927                            void (*callback)(icalcomponent *, long, char*, int, struct calview *),
 928                            struct calview *calv
 929         )
 930 {
 931         char buf[1024];
 932         char from[128] = "";
 933         char mime_partnum[256];
 934         char mime_filename[256];
 935         char mime_content_type[256];
 936         char mime_disposition[256];
 937         int mime_length;
 938         char relevant_partnum[256];
 939         char *relevant_source = NULL;
 940         icalcomponent *cal, *c;
 941
 942         relevant_partnum[0] = '\0';
 943         sprintf(buf, "MSG4 %ld", msgnum);       /* we need the mime headers */
 944         serv_puts(buf);
 945         serv_getln(buf, sizeof buf);
 946         if (buf[0] != '1') return;
 947
 948         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 949                 if (!strncasecmp(buf, "part=", 5)) {
 950                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 951                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 952                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 953                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 954                         mime_length = extract_int(&buf[5], 5);
 955
 956                         if (  (!strcasecmp(mime_content_type, "text/calendar"))
 957                               || (!strcasecmp(mime_content_type, "application/ics"))
 958                               || (!strcasecmp(mime_content_type, "text/vtodo"))
 959                                 ) {
 960                                 strcpy(relevant_partnum, mime_partnum);
 961                         }
 962                 }
 963                 else if (!strncasecmp(buf, "from=", 4)) {
 964                         extract_token(from, buf, 1, '=', sizeof(from));
 965                 }
 966         }
 967
 968         if (!IsEmptyStr(relevant_partnum)) {
 969                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 970                 if (relevant_source != NULL) {
 971
 972                         cal = icalcomponent_new_from_string(relevant_source);
 973                         if (cal != NULL) {
 974
 975                                 ical_dezonify(cal);
 976
 977                                 /* Simple components of desired type */
 978                                 if (icalcomponent_isa(cal) == which_kind) {
 979                                         callback(cal, msgnum, from, unread, calv);
 980                                 }
 981
 982                                 /* Subcomponents of desired type */
 983                                 for (c = icalcomponent_get_first_component(cal, which_kind);
 984                                      (c != 0);
 985                                      c = icalcomponent_get_next_component(cal, which_kind)) {
 986                                         callback(c, msgnum, from, unread, calv);
 987                                 }
 988                                 icalcomponent_free(cal);
 989                         }
 990                         free(relevant_source);
 991                 }
 992         }
 993         icalmemory_free_ring();
 994 }
 995
 996 /*
 997  * Display a calendar item
 998  */
 999 void load_calendar_item(long msgnum, int unread, struct calview *c) {
1000         load_ical_object(msgnum, unread, ICAL_VEVENT_COMPONENT, display_individual_cal, c);
1001 }
1002
1003 /*
1004  * Display task view
1005  */
1006 void display_task(long msgnum, int unread) {
1007         load_ical_object(msgnum, unread, ICAL_VTODO_COMPONENT, display_individual_cal, NULL);
1008 }
1009
1010 /*
1011  * Display the editor component for a task
1012  */
1013 void display_edit_task(void) {
1014         long msgnum = 0L;
1015
1016         /* Force change the room if we have to */
1017         if (havebstr("taskrm")) {
1018                 gotoroom((char *)bstr("taskrm"));
1019         }
1020
1021         msgnum = lbstr("msgnum");
1022         if (msgnum > 0L) {
1023                 /* existing task */
1024                 load_ical_object(msgnum, 0,
1025                                       ICAL_VTODO_COMPONENT,
1026                                       display_edit_individual_task,
1027                                       NULL
1028                 );
1029         }
1030         else {
1031                 /* new task */
1032                 display_edit_individual_task(NULL, 0L, "", 0, NULL);
1033         }
1034 }
1035
1036 /*
1037  * save an edited task
1038  */
1039 void save_task(void) {
1040         long msgnum = 0L;
1041         msgnum = lbstr("msgnum");
1042         if (msgnum > 0L) {
1043                 load_ical_object(msgnum, 0, ICAL_VTODO_COMPONENT, save_individual_task, NULL);
1044         }
1045         else {
1046                 save_individual_task(NULL, 0L, "", 0, NULL);
1047         }
1048 }
1049
1050 /*
1051  * display the editor component for an event
1052  */
1053 void display_edit_event(void) {
1054         long msgnum = 0L;
1055
1056         msgnum = lbstr("msgnum");
1057         if (msgnum > 0L) {
1058                 /* existing event */
1059                 load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, display_edit_individual_event, NULL);
1060         }
1061         else {
1062                 /* new event */
1063                 display_edit_individual_event(NULL, 0L, "", 0, NULL);
1064         }
1065 }
1066
1067 /*
1068  * save an edited event
1069  */
1070 void save_event(void) {
1071         long msgnum = 0L;
1072
1073         msgnum = lbstr("msgnum");
1074
1075         if (msgnum > 0L) {
1076                 load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, save_individual_event, NULL);
1077         }
1078         else {
1079                 save_individual_event(NULL, 0L, "", 0, NULL);
1080         }
1081 }
1082
1083
1084
1085
1086
1087 /*
1088  * Anonymous request of freebusy data for a user
1089  */
1090 void do_freebusy(const char *req) {
1091         char who[SIZ];
1092         char buf[SIZ];
1093         int len;
1094         long lines;
1095
1096         extract_token(who, req, 1, ' ', sizeof who);
1097         if (!strncasecmp(who, "/freebusy/", 10)) {
1098                 strcpy(who, &who[10]);
1099         }
1100         unescape_input(who);
1101
1102         len = strlen(who);
1103         if ( (!strcasecmp(&who[len-4], ".vcf"))
1104              || (!strcasecmp(&who[len-4], ".ifb"))
1105              || (!strcasecmp(&who[len-4], ".vfb")) ) {
1106                 who[len-4] = 0;
1107         }
1108
1109         lprintf(9, "freebusy requested for <%s>\n", who);
1110         serv_printf("ICAL freebusy|%s", who);
1111         serv_getln(buf, sizeof buf);
1112
1113         if (buf[0] != '1') {
1114                 hprintf("HTTP/1.1 404 %s\n", &buf[4]);
1115                 output_headers(0, 0, 0, 0, 0, 0);
1116                 hprintf("Content-Type: text/plain\r\n");
1117                 wprintf("%s\n", &buf[4]);
1118                 end_burst();
1119                 return;
1120         }
1121
1122         read_server_text(WC->WBuf, &lines);
1123         http_transmit_thing("text/calendar", 0);
1124 }
1125
1126
1127
1128
1129
1130 void
1131 InitModule_CALENDAR
1132 (void)
1133 {
1134         WebcitAddUrlHandler(HKEY("display_edit_task"), display_edit_task, 0);
1135         WebcitAddUrlHandler(HKEY("save_task"), save_task, 0);
1136         WebcitAddUrlHandler(HKEY("display_edit_event"), display_edit_event, 0);
1137         WebcitAddUrlHandler(HKEY("save_event"), save_event, 0);
1138         WebcitAddUrlHandler(HKEY("respond_to_request"), respond_to_request, 0);
1139         WebcitAddUrlHandler(HKEY("handle_rsvp"), handle_rsvp, 0);
1140 }