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)
 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 #ifdef TECH_PREVIEW
 476
 477         /* handle recurring events */
 478
 479         if (icaltime_is_null_time(dtstart)) return;     /* Can't recur without a start time */
 480
 481         if (!icaltime_is_null_time(dtend)) {            /* Need duration for recurrences */
 482                 dur = icaltime_subtract(dtend, dtstart);
 483         }
 484
 485         /*
 486          * Just let libical iterate the recurrence, and keep looping back to the top of this function,
 487          * adding new hash entries that all point back to the same msgnum, until either the iteration
 488          * stops or some outer bound is reached.  The display code will automatically do the Right Thing.
 489          */
 490
 491         rrule = icalcomponent_get_first_property(Cal->cal, ICAL_RRULE_PROPERTY);
 492         if (!rrule) return;
 493         recur = icalproperty_get_rrule(rrule);
 494         ritr = icalrecur_iterator_new(recur, dtstart);
 495         if (!ritr) return;
 496
 497         while (next = icalrecur_iterator_next(ritr), !icaltime_is_null_time(next) ) {
 498                 ++num_recur;
 499
 500                 if (num_recur > 1) {            /* Skip the first one.  We already did it at the root. */
 501
 502                         /* Note: anything we do here, we also have to do above for the root event. */
 503                         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 504                         memset(Cal, 0, sizeof(disp_cal));
 505
 506                         Cal->cal = icalcomponent_new_clone(cal);
 507                         Cal->unread = unread;
 508                         len = strlen(from);
 509                         Cal->from = (char*)malloc(len+ 1);
 510                         memcpy(Cal->from, from, len + 1);
 511                         ical_dezonify(Cal->cal);
 512                         Cal->cal_msgnum = msgnum;
 513
 514                         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 515                         if (ps != NULL) {
 516                                 icalcomponent_remove_property(Cal->cal, ps);
 517                                 ps = icalproperty_new_dtstart(next);
 518                                 icalcomponent_add_property(Cal->cal, ps);
 519                                 Cal->event_start = icaltime_as_timet(next);
 520                                 final_recurrence = Cal->event_start;
 521                         }
 522
 523                         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 524                         if (ps != NULL) {
 525                                 icalcomponent_remove_property(Cal->cal, ps);
 526
 527                                 /* Make a new dtend */
 528                                 ps = icalproperty_new_dtend(icaltime_add(next, dur));
 529
 530                                 /* and stick it somewhere */
 531                                 icalcomponent_add_property(Cal->cal, ps);
 532                         }
 533
 534                         Put(WCC->disp_cal_items,
 535                                 (char*) &Cal->event_start,
 536                                 sizeof(Cal->event_start),
 537                                 Cal,
 538                                 delete_cal);
 539                 }
 540         }
 541         lprintf(9, "Performed %d recurrences; final one is %s", num_recur, ctime(&final_recurrence));
 542
 543 #endif /* TECH_PREVIEW */
 544
 545 }
 546
 547
 548
 549 /*
 550  * Display a task by itself (for editing)
 551  */
 552 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum, char *from, int unread)
 553 {
 554         icalcomponent *vtodo;
 555         icalproperty *p;
 556         struct icaltimetype IcalTime;
 557         time_t now;
 558         int created_new_vtodo = 0;
 559         icalproperty_status todoStatus;
 560
 561         now = time(NULL);
 562
 563         if (supplied_vtodo != NULL) {
 564                 vtodo = supplied_vtodo;
 565
 566                 /**
 567                  * If we're looking at a fully encapsulated VCALENDAR
 568                  * rather than a VTODO component, attempt to use the first
 569                  * relevant VTODO subcomponent.  If there is none, the
 570                  * NULL returned by icalcomponent_get_first_component() will
 571                  * tell the next iteration of this function to create a
 572                  * new one.
 573                  */
 574                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 575                         display_edit_individual_task(
 576                                 icalcomponent_get_first_component(
 577                                         vtodo, ICAL_VTODO_COMPONENT
 578                                         ),
 579                                 msgnum,
 580                                 from, unread
 581                                 );
 582                         return;
 583                 }
 584         }
 585         else {
 586                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 587                 created_new_vtodo = 1;
 588         }
 589
 590         // TODO: Can we take all this and move it into a template?
 591         output_headers(1, 1, 1, 0, 0, 0);
 592         wprintf("<!-- start task edit form -->");
 593         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 594         // Get summary early for title
 595         wprintf("<div class=\"box\">\n");
 596         wprintf("<div class=\"boxlabel\">");
 597         wprintf(_("Edit task"));
 598         wprintf("- ");
 599         if (p != NULL) {
 600                 escputs((char *)icalproperty_get_comment(p));
 601         }
 602         wprintf("</div>");
 603
 604         wprintf("<div class=\"boxcontent\">\n");
 605         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 606         wprintf("<div style=\"display: none;\">\n       ");
 607         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 608         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 609                 msgnum);
 610         wprintf("</div>");
 611         wprintf("<table class=\"calendar_background\"><tr><td>");
 612         wprintf("<TABLE STYLE=\"border: none;\">\n");
 613
 614         wprintf("<TR><TD>");
 615         wprintf(_("Summary:"));
 616         wprintf("</TD><TD>"
 617                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 618                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 619         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 620         if (p != NULL) {
 621                 escputs((char *)icalproperty_get_comment(p));
 622         }
 623         wprintf("\"></TD></TR>\n");
 624
 625         wprintf("<TR><TD>");
 626         wprintf(_("Start date:"));
 627         wprintf("</TD><TD>");
 628         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 629         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodtstart\" ID=\"nodtstart\" VALUE=\"NODTSTART\" ");
 630         if (p == NULL) {
 631                 wprintf("CHECKED=\"CHECKED\"");
 632         }
 633         wprintf(">");
 634         wprintf(_("No date"));
 635
 636         wprintf(" ");
 637         wprintf(_("or"));
 638         wprintf(" ");
 639         if (p != NULL) {
 640                 IcalTime = icalproperty_get_dtstart(p);
 641         }
 642         else
 643                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 644         display_icaltimetype_as_webform(&IcalTime, "dtstart");
 645         wprintf("</TD></TR>\n");
 646
 647         wprintf("<TR><TD>");
 648         wprintf(_("Due date:"));
 649         wprintf("</TD><TD>");
 650         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 651         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodue\" ID=\"nodue\" VALUE=\"NODUE\"");
 652         if (p == NULL) {
 653                 wprintf("CHECKED=\"CHECKED\"");
 654         }
 655         wprintf(">");
 656         wprintf(_("No date"));
 657         wprintf(" ");
 658         wprintf(_("or"));
 659         wprintf(" ");
 660         if (p != NULL) {
 661                 IcalTime = icalproperty_get_due(p);
 662         }
 663         else
 664                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 665         display_icaltimetype_as_webform(&IcalTime, "due");
 666
 667         wprintf("</TD></TR>\n");
 668         todoStatus = icalcomponent_get_status(vtodo);
 669         wprintf("<TR><TD>\n");
 670         wprintf(_("Completed:"));
 671         wprintf("</TD><TD>");
 672         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"status\" VALUE=\"COMPLETED\"");
 673         if (todoStatus == ICAL_STATUS_COMPLETED) {
 674                 wprintf(" CHECKED=\"CHECKED\"");
 675         }
 676         wprintf(" >");
 677         wprintf("</TD></TR>");
 678         // start category field
 679         p = icalcomponent_get_first_property(vtodo, ICAL_CATEGORIES_PROPERTY);
 680         wprintf("<TR><TD>");
 681         wprintf(_("Category:"));
 682         wprintf("</TD><TD>");
 683         wprintf("<INPUT TYPE=\"text\" NAME=\"category\" MAXLENGTH=\"32\" SIZE=\"32\" VALUE=\"");
 684         if (p != NULL) {
 685                 escputs((char *)icalproperty_get_categories(p));
 686         }
 687         wprintf("\">");
 688         wprintf("</TD></TR>\n   ");
 689         // end category field
 690         wprintf("<TR><TD>");
 691         wprintf(_("Description:"));
 692         wprintf("</TD><TD>");
 693         wprintf("<TEXTAREA NAME=\"description\" "
 694                 "ROWS=\"10\" COLS=\"80\">\n"
 695                 );
 696         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 697         if (p != NULL) {
 698                 escputs((char *)icalproperty_get_comment(p));
 699         }
 700         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 701
 702         wprintf("<SPAN STYLE=\"text-align: center;\">"
 703                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 704                 "&nbsp;&nbsp;"
 705                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 706                 "&nbsp;&nbsp;"
 707                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 708                 "</SPAN>\n",
 709                 _("Save"),
 710                 _("Delete"),
 711                 _("Cancel")
 712                 );
 713         wprintf("</td></tr></table>");
 714         wprintf("</FORM>\n");
 715         wprintf("</div></div></div>\n");
 716         wprintf("<!-- end task edit form -->");
 717         wDumpContent(1);
 718
 719         if (created_new_vtodo) {
 720                 icalcomponent_free(vtodo);
 721         }
 722 }
 723
 724 /*
 725  * \brief Save an edited task
 726  * \param supplied_vtodo the task to save
 727  * \param msgnum number of the mesage in our db
 728  */
 729 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum, char* from, int unread)
 730 {
 731         char buf[SIZ];
 732         int delete_existing = 0;
 733         icalproperty *prop;
 734         icalcomponent *vtodo, *encaps;
 735         int created_new_vtodo = 0;
 736         int i;
 737         int sequence = 0;
 738         struct icaltimetype t;
 739
 740         if (supplied_vtodo != NULL) {
 741                 vtodo = supplied_vtodo;
 742                 /**
 743                  * If we're looking at a fully encapsulated VCALENDAR
 744                  * rather than a VTODO component, attempt to use the first
 745                  * relevant VTODO subcomponent.  If there is none, the
 746                  * NULL returned by icalcomponent_get_first_component() will
 747                  * tell the next iteration of this function to create a
 748                  * new one.
 749                  */
 750                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 751                         save_individual_task(
 752                                 icalcomponent_get_first_component(
 753                                         vtodo, ICAL_VTODO_COMPONENT),
 754                                 msgnum, from, unread
 755                                 );
 756                         return;
 757                 }
 758         }
 759         else {
 760                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 761                 created_new_vtodo = 1;
 762         }
 763
 764         if (havebstr("save_button")) {
 765
 766                 /** Replace values in the component with ones from the form */
 767
 768                 while (prop = icalcomponent_get_first_property(vtodo,
 769                                                                ICAL_SUMMARY_PROPERTY), prop != NULL) {
 770                         icalcomponent_remove_property(vtodo, prop);
 771                         icalproperty_free(prop);
 772                 }
 773                 if (havebstr("summary")) {
 774
 775                         icalcomponent_add_property(vtodo,
 776                                                    icalproperty_new_summary(bstr("summary")));
 777                 } else {
 778                         icalcomponent_add_property(vtodo,
 779                                                    icalproperty_new_summary("Untitled Task"));
 780                 }
 781
 782                 while (prop = icalcomponent_get_first_property(vtodo,
 783                                                                ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 784                         icalcomponent_remove_property(vtodo, prop);
 785                         icalproperty_free(prop);
 786                 }
 787                 if (havebstr("description")) {
 788                         icalcomponent_add_property(vtodo,
 789                                                    icalproperty_new_description(bstr("description")));
 790                 }
 791
 792                 while (prop = icalcomponent_get_first_property(vtodo,
 793                                                                ICAL_DTSTART_PROPERTY), prop != NULL) {
 794                         icalcomponent_remove_property(vtodo, prop);
 795                         icalproperty_free(prop);
 796                 }
 797                 if (IsEmptyStr(bstr("nodtstart"))) {
 798                         icaltime_from_webform(&t, "dtstart");
 799                         icalcomponent_add_property(vtodo,
 800                                                    icalproperty_new_dtstart(t)
 801                                 );
 802                 }
 803                 while(prop = icalcomponent_get_first_property(vtodo,
 804                                                               ICAL_STATUS_PROPERTY), prop != NULL) {
 805                         icalcomponent_remove_property(vtodo,prop);
 806                         icalproperty_free(prop);
 807                 }
 808                 if (havebstr("status")) {
 809                         icalproperty_status taskStatus = icalproperty_string_to_status(
 810                                 bstr("status"));
 811                         icalcomponent_set_status(vtodo, taskStatus);
 812                 }
 813                 while (prop = icalcomponent_get_first_property(vtodo,
 814                                                                ICAL_CATEGORIES_PROPERTY), prop != NULL) {
 815                         icalcomponent_remove_property(vtodo,prop);
 816                         icalproperty_free(prop);
 817                 }
 818                 if (!IsEmptyStr(bstr("category"))) {
 819                         prop = icalproperty_new_categories(bstr("category"));
 820                         icalcomponent_add_property(vtodo,prop);
 821                 }
 822                 while (prop = icalcomponent_get_first_property(vtodo,
 823                                                                ICAL_DUE_PROPERTY), prop != NULL) {
 824                         icalcomponent_remove_property(vtodo, prop);
 825                         icalproperty_free(prop);
 826                 }
 827                 if (IsEmptyStr(bstr("nodue"))) {
 828                         icaltime_from_webform(&t, "due");
 829                         icalcomponent_add_property(vtodo,
 830                                                    icalproperty_new_due(t)
 831                                 );
 832                 }
 833                 /** Give this task a UID if it doesn't have one. */
 834                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 835                 if (icalcomponent_get_first_property(vtodo,
 836                                                      ICAL_UID_PROPERTY) == NULL) {
 837                         generate_uuid(buf);
 838                         icalcomponent_add_property(vtodo,
 839                                                    icalproperty_new_uid(buf)
 840                                 );
 841                 }
 842
 843                 /** Increment the sequence ID */
 844                 lprintf(9, "Increment the sequence ID\n");
 845                 while (prop = icalcomponent_get_first_property(vtodo,
 846                                                                ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 847                         i = icalproperty_get_sequence(prop);
 848                         lprintf(9, "Sequence was %d\n", i);
 849                         if (i > sequence) sequence = i;
 850                         icalcomponent_remove_property(vtodo, prop);
 851                         icalproperty_free(prop);
 852                 }
 853                 ++sequence;
 854                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 855                 icalcomponent_add_property(vtodo,
 856                                            icalproperty_new_sequence(sequence)
 857                         );
 858
 859                 /**
 860                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 861                  * for two reasons: one, it's easier to just free the whole thing
 862                  * when we're done instead of unbundling, but more importantly, we
 863                  * can't encapsulate something that may already be encapsulated
 864                  * somewhere else.
 865                  */
 866                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 867                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 868
 869                 /* Serialize it and save it to the message base */
 870                 serv_puts("ENT0 1|||4");
 871                 serv_getln(buf, sizeof buf);
 872                 if (buf[0] == '4') {
 873                         serv_puts("Content-type: text/calendar");
 874                         serv_puts("");
 875                         serv_puts(icalcomponent_as_ical_string(encaps));
 876                         serv_puts("000");
 877
 878                         /**
 879                          * Probably not necessary; the server will see the UID
 880                          * of the object and delete the old one anyway, but
 881                          * just in case...
 882                          */
 883                         delete_existing = 1;
 884                 }
 885                 icalcomponent_free(encaps);
 886         }
 887
 888         /**
 889          * If the user clicked 'Delete' then explicitly delete the message.
 890          */
 891         if (havebstr("delete_button")) {
 892                 delete_existing = 1;
 893         }
 894
 895         if ( (delete_existing) && (msgnum > 0L) ) {
 896                 serv_printf("DELE %ld", lbstr("msgnum"));
 897                 serv_getln(buf, sizeof buf);
 898         }
 899
 900         if (created_new_vtodo) {
 901                 icalcomponent_free(vtodo);
 902         }
 903
 904         /** Go back to the task list */
 905         readloop("readfwd");
 906 }
 907
 908
 909
 910 /*
 911  * Code common to all icalendar display handlers.  Given a message number and a MIME
 912  * type, we load the message and hunt for that MIME type.  If found, we load
 913  * the relevant part, deserialize it into a libical component, filter it for
 914  * the requested object type, and feed it to the specified handler.
 915  */
 916 void display_using_handler(long msgnum, int unread,
 917                            icalcomponent_kind which_kind,
 918                            void (*callback)(icalcomponent *, long, char*, int)
 919         )
 920 {
 921         char buf[1024];
 922         char from[128] = "";
 923         char mime_partnum[256];
 924         char mime_filename[256];
 925         char mime_content_type[256];
 926         char mime_disposition[256];
 927         int mime_length;
 928         char relevant_partnum[256];
 929         char *relevant_source = NULL;
 930         icalcomponent *cal, *c;
 931
 932         relevant_partnum[0] = '\0';
 933         sprintf(buf, "MSG4 %ld", msgnum);       /* we need the mime headers */
 934         serv_puts(buf);
 935         serv_getln(buf, sizeof buf);
 936         if (buf[0] != '1') return;
 937
 938         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 939                 if (!strncasecmp(buf, "part=", 5)) {
 940                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 941                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 942                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 943                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 944                         mime_length = extract_int(&buf[5], 5);
 945
 946                         if (  (!strcasecmp(mime_content_type, "text/calendar"))
 947                               || (!strcasecmp(mime_content_type, "application/ics"))
 948                               || (!strcasecmp(mime_content_type, "text/vtodo"))
 949                                 ) {
 950                                 strcpy(relevant_partnum, mime_partnum);
 951                         }
 952                 }
 953                 else if (!strncasecmp(buf, "from=", 4)) {
 954                         extract_token(from, buf, 1, '=', sizeof(from));
 955                 }
 956         }
 957
 958         if (!IsEmptyStr(relevant_partnum)) {
 959                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 960                 if (relevant_source != NULL) {
 961
 962                         cal = icalcomponent_new_from_string(relevant_source);
 963                         if (cal != NULL) {
 964
 965                                 ical_dezonify(cal);
 966
 967                                 /* Simple components of desired type */
 968                                 if (icalcomponent_isa(cal) == which_kind) {
 969                                         callback(cal, msgnum, from, unread);
 970                                 }
 971
 972                                 /* Subcomponents of desired type */
 973                                 for (c = icalcomponent_get_first_component(cal, which_kind);
 974                                      (c != 0);
 975                                      c = icalcomponent_get_next_component(cal, which_kind)) {
 976                                         callback(c, msgnum, from, unread);
 977                                 }
 978                                 icalcomponent_free(cal);
 979                         }
 980                         free(relevant_source);
 981                 }
 982         }
 983         icalmemory_free_ring();
 984 }
 985
 986 /*
 987  * Display a calendar item
 988  */
 989 void display_calendar(long msgnum, int unread) {
 990         display_using_handler(msgnum, unread, ICAL_VEVENT_COMPONENT, display_individual_cal);
 991 }
 992
 993 /*
 994  * Display task view
 995  */
 996 void display_task(long msgnum, int unread) {
 997         display_using_handler(msgnum, unread, ICAL_VTODO_COMPONENT, display_individual_cal);
 998 }
 999
1000 /*
1001  * Display the editor component for a task
1002  */
1003 void display_edit_task(void) {
1004         long msgnum = 0L;
1005
1006         /* Force change the room if we have to */
1007         if (havebstr("taskrm")) {
1008                 gotoroom((char *)bstr("taskrm"));
1009         }
1010
1011         msgnum = lbstr("msgnum");
1012         if (msgnum > 0L) {
1013                 /* existing task */
1014                 display_using_handler(msgnum, 0,
1015                                       ICAL_VTODO_COMPONENT,
1016                                       display_edit_individual_task);
1017         }
1018         else {
1019                 /* new task */
1020                 display_edit_individual_task(NULL, 0L, "", 0);
1021         }
1022 }
1023
1024 /*
1025  * save an edited task
1026  */
1027 void save_task(void) {
1028         long msgnum = 0L;
1029
1030         msgnum = lbstr("msgnum");
1031         if (msgnum > 0L) {
1032                 display_using_handler(msgnum, 0, ICAL_VTODO_COMPONENT, save_individual_task);
1033         }
1034         else {
1035                 save_individual_task(NULL, 0L, "", 0);
1036         }
1037 }
1038
1039 /*
1040  * display the editor component for an event
1041  */
1042 void display_edit_event(void) {
1043         long msgnum = 0L;
1044
1045         msgnum = lbstr("msgnum");
1046         if (msgnum > 0L) {
1047                 /* existing event */
1048                 display_using_handler(msgnum, 0, ICAL_VEVENT_COMPONENT, display_edit_individual_event);
1049         }
1050         else {
1051                 /* new event */
1052                 display_edit_individual_event(NULL, 0L, "", 0);
1053         }
1054 }
1055
1056 /*
1057  * save an edited event
1058  */
1059 void save_event(void) {
1060         long msgnum = 0L;
1061
1062         msgnum = lbstr("msgnum");
1063
1064         if (msgnum > 0L) {
1065                 display_using_handler(msgnum, 0, ICAL_VEVENT_COMPONENT, save_individual_event);
1066         }
1067         else {
1068                 save_individual_event(NULL, 0L, "", 0);
1069         }
1070 }
1071
1072
1073
1074
1075
1076 /*
1077  * Anonymous request of freebusy data for a user
1078  */
1079 void do_freebusy(char *req) {
1080         char who[SIZ];
1081         char buf[SIZ];
1082         int len;
1083         long lines;
1084
1085         extract_token(who, req, 1, ' ', sizeof who);
1086         if (!strncasecmp(who, "/freebusy/", 10)) {
1087                 strcpy(who, &who[10]);
1088         }
1089         unescape_input(who);
1090
1091         len = strlen(who);
1092         if ( (!strcasecmp(&who[len-4], ".vcf"))
1093              || (!strcasecmp(&who[len-4], ".ifb"))
1094              || (!strcasecmp(&who[len-4], ".vfb")) ) {
1095                 who[len-4] = 0;
1096         }
1097
1098         lprintf(9, "freebusy requested for <%s>\n", who);
1099         serv_printf("ICAL freebusy|%s", who);
1100         serv_getln(buf, sizeof buf);
1101
1102         if (buf[0] != '1') {
1103                 hprintf("HTTP/1.1 404 %s\n", &buf[4]);
1104                 output_headers(0, 0, 0, 0, 0, 0);
1105                 hprintf("Content-Type: text/plain\r\n");
1106                 wprintf("%s\n", &buf[4]);
1107                 end_burst();
1108                 return;
1109         }
1110
1111         read_server_text(WC->WBuf, &lines);
1112         http_transmit_thing("text/calendar", 0);
1113 }
1114
1115
1116
1117
1118
1119 void
1120 InitModule_CALENDAR
1121 (void)
1122 {
1123         WebcitAddUrlHandler(HKEY("display_edit_task"), display_edit_task, 0);
1124         WebcitAddUrlHandler(HKEY("save_task"), save_task, 0);
1125         WebcitAddUrlHandler(HKEY("display_edit_event"), display_edit_event, 0);
1126         WebcitAddUrlHandler(HKEY("save_event"), save_event, 0);
1127         WebcitAddUrlHandler(HKEY("respond_to_request"), respond_to_request, 0);
1128         WebcitAddUrlHandler(HKEY("handle_rsvp"), handle_rsvp, 0);
1129 }