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 t;
 420         struct wcsession *WCC = WC;
 421         disp_cal *Cal;
 422         size_t len;
 423
 424         if (WCC->disp_cal_items == NULL)
 425                 WCC->disp_cal_items = NewHash(0, Flathash);
 426
 427         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 428         memset(Cal, 0, sizeof(disp_cal));
 429
 430         Cal->cal = icalcomponent_new_clone(cal);
 431         Cal->unread = unread;
 432         len = strlen(from);
 433         Cal->from = (char*)malloc(len+ 1);
 434         memcpy(Cal->from, from, len + 1);
 435         ical_dezonify(Cal->cal);
 436         Cal->cal_msgnum = msgnum;
 437
 438         /* Precalculate the starting date and time of this event, and store it in our top-level
 439          * structure.  Later, when we are rendering the calendar, we can just peek at these values
 440          * without having to break apart every calendar item.
 441          */
 442         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 443         if (ps != NULL) {
 444                 t = icalproperty_get_dtstart(ps);
 445                 Cal->event_start = icaltime_as_timet(t);
 446         }
 447
 448         /* Do the same for the ending date and time.  It makes the day view much easier to render. */
 449         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 450         if (ps != NULL) {
 451                 t = icalproperty_get_dtstart(ps);
 452                 Cal->event_end = icaltime_as_timet(t);
 453         }
 454
 455         /* Store it in the hash list. */
 456         Put(WCC->disp_cal_items,
 457             (char*) &Cal->event_start,
 458             sizeof(Cal->event_start),
 459             Cal,
 460             delete_cal);
 461
 462 #ifdef TECH_PREVIEW
 463
 464         /* handle recurring events (unfinished) */
 465
 466         /*
 467          * Just let libical iterate the recurrence, and keep looping back to the top of this function,
 468          * adding new hash entries that all point back to the same msgnum, until either the iteration
 469          * stops or some outer bound is reached.  The display code *should* automatically do the right
 470          * thing (but we'll have to see).
 471
 472         icalproperty *rrule = icalcomponent_get_first_property(Cal->cal, ICAL_RRULE_PROPERTY);
 473         if (!rrule) return;
 474         struct icalrecurrencetype recur = icalproperty_get_rrule(rrule);
 475
 476         lprintf(9, "recurrence detected -- need to handle this\n");
 477
 478          */
 479
 480 #endif /* TECH_PREVIEW */
 481
 482 }
 483
 484
 485
 486 /*
 487  * Display a task by itself (for editing)
 488  */
 489 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum, char *from, int unread)
 490 {
 491         icalcomponent *vtodo;
 492         icalproperty *p;
 493         struct icaltimetype IcalTime;
 494         time_t now;
 495         int created_new_vtodo = 0;
 496         icalproperty_status todoStatus;
 497
 498         now = time(NULL);
 499
 500         if (supplied_vtodo != NULL) {
 501                 vtodo = supplied_vtodo;
 502
 503                 /**
 504                  * If we're looking at a fully encapsulated VCALENDAR
 505                  * rather than a VTODO component, attempt to use the first
 506                  * relevant VTODO subcomponent.  If there is none, the
 507                  * NULL returned by icalcomponent_get_first_component() will
 508                  * tell the next iteration of this function to create a
 509                  * new one.
 510                  */
 511                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 512                         display_edit_individual_task(
 513                                 icalcomponent_get_first_component(
 514                                         vtodo, ICAL_VTODO_COMPONENT
 515                                         ),
 516                                 msgnum,
 517                                 from, unread
 518                                 );
 519                         return;
 520                 }
 521         }
 522         else {
 523                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 524                 created_new_vtodo = 1;
 525         }
 526
 527         // TODO: Can we take all this and move it into a template?
 528         output_headers(1, 1, 1, 0, 0, 0);
 529         wprintf("<!-- start task edit form -->");
 530         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 531         // Get summary early for title
 532         wprintf("<div class=\"box\">\n");
 533         wprintf("<div class=\"boxlabel\">");
 534         wprintf(_("Edit task"));
 535         wprintf("- ");
 536         if (p != NULL) {
 537                 escputs((char *)icalproperty_get_comment(p));
 538         }
 539         wprintf("</div>");
 540
 541         wprintf("<div class=\"boxcontent\">\n");
 542         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 543         wprintf("<div style=\"display: none;\">\n       ");
 544         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 545         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 546                 msgnum);
 547         wprintf("</div>");
 548         wprintf("<table class=\"calendar_background\"><tr><td>");
 549         wprintf("<TABLE STYLE=\"border: none;\">\n");
 550
 551         wprintf("<TR><TD>");
 552         wprintf(_("Summary:"));
 553         wprintf("</TD><TD>"
 554                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 555                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 556         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 557         if (p != NULL) {
 558                 escputs((char *)icalproperty_get_comment(p));
 559         }
 560         wprintf("\"></TD></TR>\n");
 561
 562         wprintf("<TR><TD>");
 563         wprintf(_("Start date:"));
 564         wprintf("</TD><TD>");
 565         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 566         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodtstart\" ID=\"nodtstart\" VALUE=\"NODTSTART\" ");
 567         if (p == NULL) {
 568                 wprintf("CHECKED=\"CHECKED\"");
 569         }
 570         wprintf(">");
 571         wprintf(_("No date"));
 572
 573         wprintf(" ");
 574         wprintf(_("or"));
 575         wprintf(" ");
 576         if (p != NULL) {
 577                 IcalTime = icalproperty_get_dtstart(p);
 578         }
 579         else
 580                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 581         display_icaltimetype_as_webform(&IcalTime, "dtstart");
 582         wprintf("</TD></TR>\n");
 583
 584         wprintf("<TR><TD>");
 585         wprintf(_("Due date:"));
 586         wprintf("</TD><TD>");
 587         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 588         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodue\" ID=\"nodue\" VALUE=\"NODUE\"");
 589         if (p == NULL) {
 590                 wprintf("CHECKED=\"CHECKED\"");
 591         }
 592         wprintf(">");
 593         wprintf(_("No date"));
 594         wprintf(" ");
 595         wprintf(_("or"));
 596         wprintf(" ");
 597         if (p != NULL) {
 598                 IcalTime = icalproperty_get_due(p);
 599         }
 600         else
 601                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 602         display_icaltimetype_as_webform(&IcalTime, "due");
 603
 604         wprintf("</TD></TR>\n");
 605         todoStatus = icalcomponent_get_status(vtodo);
 606         wprintf("<TR><TD>\n");
 607         wprintf(_("Completed:"));
 608         wprintf("</TD><TD>");
 609         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"status\" VALUE=\"COMPLETED\"");
 610         if (todoStatus == ICAL_STATUS_COMPLETED) {
 611                 wprintf(" CHECKED=\"CHECKED\"");
 612         }
 613         wprintf(" >");
 614         wprintf("</TD></TR>");
 615         // start category field
 616         p = icalcomponent_get_first_property(vtodo, ICAL_CATEGORIES_PROPERTY);
 617         wprintf("<TR><TD>");
 618         wprintf(_("Category:"));
 619         wprintf("</TD><TD>");
 620         wprintf("<INPUT TYPE=\"text\" NAME=\"category\" MAXLENGTH=\"32\" SIZE=\"32\" VALUE=\"");
 621         if (p != NULL) {
 622                 escputs((char *)icalproperty_get_categories(p));
 623         }
 624         wprintf("\">");
 625         wprintf("</TD></TR>\n   ");
 626         // end category field
 627         wprintf("<TR><TD>");
 628         wprintf(_("Description:"));
 629         wprintf("</TD><TD>");
 630         wprintf("<TEXTAREA NAME=\"description\" "
 631                 "ROWS=\"10\" COLS=\"80\">\n"
 632                 );
 633         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 634         if (p != NULL) {
 635                 escputs((char *)icalproperty_get_comment(p));
 636         }
 637         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 638
 639         wprintf("<SPAN STYLE=\"text-align: center;\">"
 640                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 641                 "&nbsp;&nbsp;"
 642                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 643                 "&nbsp;&nbsp;"
 644                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 645                 "</SPAN>\n",
 646                 _("Save"),
 647                 _("Delete"),
 648                 _("Cancel")
 649                 );
 650         wprintf("</td></tr></table>");
 651         wprintf("</FORM>\n");
 652         wprintf("</div></div></div>\n");
 653         wprintf("<!-- end task edit form -->");
 654         wDumpContent(1);
 655
 656         if (created_new_vtodo) {
 657                 icalcomponent_free(vtodo);
 658         }
 659 }
 660
 661 /*
 662  * \brief Save an edited task
 663  * \param supplied_vtodo the task to save
 664  * \param msgnum number of the mesage in our db
 665  */
 666 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum, char* from, int unread)
 667 {
 668         char buf[SIZ];
 669         int delete_existing = 0;
 670         icalproperty *prop;
 671         icalcomponent *vtodo, *encaps;
 672         int created_new_vtodo = 0;
 673         int i;
 674         int sequence = 0;
 675         struct icaltimetype t;
 676
 677         if (supplied_vtodo != NULL) {
 678                 vtodo = supplied_vtodo;
 679                 /**
 680                  * If we're looking at a fully encapsulated VCALENDAR
 681                  * rather than a VTODO component, attempt to use the first
 682                  * relevant VTODO subcomponent.  If there is none, the
 683                  * NULL returned by icalcomponent_get_first_component() will
 684                  * tell the next iteration of this function to create a
 685                  * new one.
 686                  */
 687                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 688                         save_individual_task(
 689                                 icalcomponent_get_first_component(
 690                                         vtodo, ICAL_VTODO_COMPONENT),
 691                                 msgnum, from, unread
 692                                 );
 693                         return;
 694                 }
 695         }
 696         else {
 697                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 698                 created_new_vtodo = 1;
 699         }
 700
 701         if (havebstr("save_button")) {
 702
 703                 /** Replace values in the component with ones from the form */
 704
 705                 while (prop = icalcomponent_get_first_property(vtodo,
 706                                                                ICAL_SUMMARY_PROPERTY), prop != NULL) {
 707                         icalcomponent_remove_property(vtodo, prop);
 708                         icalproperty_free(prop);
 709                 }
 710                 if (havebstr("summary")) {
 711
 712                         icalcomponent_add_property(vtodo,
 713                                                    icalproperty_new_summary(bstr("summary")));
 714                 } else {
 715                         icalcomponent_add_property(vtodo,
 716                                                    icalproperty_new_summary("Untitled Task"));
 717                 }
 718
 719                 while (prop = icalcomponent_get_first_property(vtodo,
 720                                                                ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 721                         icalcomponent_remove_property(vtodo, prop);
 722                         icalproperty_free(prop);
 723                 }
 724                 if (havebstr("description")) {
 725                         icalcomponent_add_property(vtodo,
 726                                                    icalproperty_new_description(bstr("description")));
 727                 }
 728
 729                 while (prop = icalcomponent_get_first_property(vtodo,
 730                                                                ICAL_DTSTART_PROPERTY), prop != NULL) {
 731                         icalcomponent_remove_property(vtodo, prop);
 732                         icalproperty_free(prop);
 733                 }
 734                 if (IsEmptyStr(bstr("nodtstart"))) {
 735                         icaltime_from_webform(&t, "dtstart");
 736                         icalcomponent_add_property(vtodo,
 737                                                    icalproperty_new_dtstart(t)
 738                                 );
 739                 }
 740                 while(prop = icalcomponent_get_first_property(vtodo,
 741                                                               ICAL_STATUS_PROPERTY), prop != NULL) {
 742                         icalcomponent_remove_property(vtodo,prop);
 743                         icalproperty_free(prop);
 744                 }
 745                 if (havebstr("status")) {
 746                         icalproperty_status taskStatus = icalproperty_string_to_status(
 747                                 bstr("status"));
 748                         icalcomponent_set_status(vtodo, taskStatus);
 749                 }
 750                 while (prop = icalcomponent_get_first_property(vtodo,
 751                                                                ICAL_CATEGORIES_PROPERTY), prop != NULL) {
 752                         icalcomponent_remove_property(vtodo,prop);
 753                         icalproperty_free(prop);
 754                 }
 755                 if (!IsEmptyStr(bstr("category"))) {
 756                         prop = icalproperty_new_categories(bstr("category"));
 757                         icalcomponent_add_property(vtodo,prop);
 758                 }
 759                 while (prop = icalcomponent_get_first_property(vtodo,
 760                                                                ICAL_DUE_PROPERTY), prop != NULL) {
 761                         icalcomponent_remove_property(vtodo, prop);
 762                         icalproperty_free(prop);
 763                 }
 764                 if (IsEmptyStr(bstr("nodue"))) {
 765                         icaltime_from_webform(&t, "due");
 766                         icalcomponent_add_property(vtodo,
 767                                                    icalproperty_new_due(t)
 768                                 );
 769                 }
 770                 /** Give this task a UID if it doesn't have one. */
 771                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 772                 if (icalcomponent_get_first_property(vtodo,
 773                                                      ICAL_UID_PROPERTY) == NULL) {
 774                         generate_uuid(buf);
 775                         icalcomponent_add_property(vtodo,
 776                                                    icalproperty_new_uid(buf)
 777                                 );
 778                 }
 779
 780                 /** Increment the sequence ID */
 781                 lprintf(9, "Increment the sequence ID\n");
 782                 while (prop = icalcomponent_get_first_property(vtodo,
 783                                                                ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 784                         i = icalproperty_get_sequence(prop);
 785                         lprintf(9, "Sequence was %d\n", i);
 786                         if (i > sequence) sequence = i;
 787                         icalcomponent_remove_property(vtodo, prop);
 788                         icalproperty_free(prop);
 789                 }
 790                 ++sequence;
 791                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 792                 icalcomponent_add_property(vtodo,
 793                                            icalproperty_new_sequence(sequence)
 794                         );
 795
 796                 /**
 797                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 798                  * for two reasons: one, it's easier to just free the whole thing
 799                  * when we're done instead of unbundling, but more importantly, we
 800                  * can't encapsulate something that may already be encapsulated
 801                  * somewhere else.
 802                  */
 803                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 804                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 805
 806                 /* Serialize it and save it to the message base */
 807                 serv_puts("ENT0 1|||4");
 808                 serv_getln(buf, sizeof buf);
 809                 if (buf[0] == '4') {
 810                         serv_puts("Content-type: text/calendar");
 811                         serv_puts("");
 812                         serv_puts(icalcomponent_as_ical_string(encaps));
 813                         serv_puts("000");
 814
 815                         /**
 816                          * Probably not necessary; the server will see the UID
 817                          * of the object and delete the old one anyway, but
 818                          * just in case...
 819                          */
 820                         delete_existing = 1;
 821                 }
 822                 icalcomponent_free(encaps);
 823         }
 824
 825         /**
 826          * If the user clicked 'Delete' then explicitly delete the message.
 827          */
 828         if (havebstr("delete_button")) {
 829                 delete_existing = 1;
 830         }
 831
 832         if ( (delete_existing) && (msgnum > 0L) ) {
 833                 serv_printf("DELE %ld", lbstr("msgnum"));
 834                 serv_getln(buf, sizeof buf);
 835         }
 836
 837         if (created_new_vtodo) {
 838                 icalcomponent_free(vtodo);
 839         }
 840
 841         /** Go back to the task list */
 842         readloop("readfwd");
 843 }
 844
 845
 846
 847 /**
 848  * \brief generic item handler
 849  * Code common to all display handlers.  Given a message number and a MIME
 850  * type, we load the message and hunt for that MIME type.  If found, we load
 851  * the relevant part, deserialize it into a libical component, filter it for
 852  * the requested object type, and feed it to the specified handler.
 853  * \param mimetype mimetyp of our object
 854  * \param which_kind sort of ical type
 855  * \param msgnum number of the mesage in our db
 856  * \param callback a funcion \todo
 857  *
 858  */
 859 void display_using_handler(long msgnum, int unread,
 860                            icalcomponent_kind which_kind,
 861                            void (*callback)(icalcomponent *, long, char*, int)
 862         )
 863 {
 864         char buf[1024];
 865         char from[128] = "";
 866         char mime_partnum[256];
 867         char mime_filename[256];
 868         char mime_content_type[256];
 869         char mime_disposition[256];
 870         int mime_length;
 871         char relevant_partnum[256];
 872         char *relevant_source = NULL;
 873         icalcomponent *cal, *c;
 874
 875         relevant_partnum[0] = '\0';
 876         sprintf(buf, "MSG4 %ld", msgnum);       /* we need the mime headers */
 877         serv_puts(buf);
 878         serv_getln(buf, sizeof buf);
 879         if (buf[0] != '1') return;
 880
 881         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 882                 if (!strncasecmp(buf, "part=", 5)) {
 883                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 884                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 885                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 886                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 887                         mime_length = extract_int(&buf[5], 5);
 888
 889                         if (  (!strcasecmp(mime_content_type, "text/calendar"))
 890                               || (!strcasecmp(mime_content_type, "application/ics"))
 891                               || (!strcasecmp(mime_content_type, "text/vtodo"))
 892                                 ) {
 893                                 strcpy(relevant_partnum, mime_partnum);
 894                         }
 895                 }
 896                 else if (!strncasecmp(buf, "from=", 4)) {
 897                         extract_token(from, buf, 1, '=', sizeof(from));
 898                 }
 899         }
 900
 901         if (!IsEmptyStr(relevant_partnum)) {
 902                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 903                 if (relevant_source != NULL) {
 904
 905                         cal = icalcomponent_new_from_string(relevant_source);
 906                         if (cal != NULL) {
 907
 908                                 ical_dezonify(cal);
 909
 910                                 /** Simple components of desired type */
 911                                 if (icalcomponent_isa(cal) == which_kind) {
 912                                         callback(cal, msgnum, from, unread);
 913                                 }
 914
 915                                 /** Subcomponents of desired type */
 916                                 for (c = icalcomponent_get_first_component(cal,
 917                                                                            which_kind);
 918                                      (c != 0);
 919                                      c = icalcomponent_get_next_component(cal,
 920                                                                           which_kind)) {
 921                                         callback(c, msgnum, from, unread);
 922                                 }
 923                                 icalcomponent_free(cal);
 924                         }
 925                         free(relevant_source);
 926                 }
 927         }
 928         icalmemory_free_ring();
 929 }
 930
 931 /**
 932  * \brief display whole calendar
 933  * \param msgnum number of the mesage in our db
 934  */
 935 void display_calendar(long msgnum, int unread) {
 936         display_using_handler(msgnum, unread,
 937                               ICAL_VEVENT_COMPONENT,
 938                               display_individual_cal);
 939 }
 940
 941 /**
 942  * \brief display whole taksview
 943  * \param msgnum number of the mesage in our db
 944  */
 945 void display_task(long msgnum, int unread) {
 946         display_using_handler(msgnum, unread,
 947                               ICAL_VTODO_COMPONENT,
 948                               display_individual_cal);
 949 }
 950
 951 /**
 952  * \brief display the editor component for a task
 953  */
 954 void display_edit_task(void) {
 955         long msgnum = 0L;
 956
 957         /** Force change the room if we have to */
 958         if (havebstr("taskrm")) {
 959                 gotoroom((char *)bstr("taskrm"));
 960         }
 961
 962         msgnum = lbstr("msgnum");
 963         if (msgnum > 0L) {
 964                 /** existing task */
 965                 display_using_handler(msgnum, 0,
 966                                       ICAL_VTODO_COMPONENT,
 967                                       display_edit_individual_task);
 968         }
 969         else {
 970                 /** new task */
 971                 display_edit_individual_task(NULL, 0L, "", 0);
 972         }
 973 }
 974
 975 /**
 976  *\brief save an edited task
 977  */
 978 void save_task(void) {
 979         long msgnum = 0L;
 980
 981         msgnum = lbstr("msgnum");
 982         if (msgnum > 0L) {
 983                 display_using_handler(msgnum, 0,
 984                                       ICAL_VTODO_COMPONENT,
 985                                       save_individual_task);
 986         }
 987         else {
 988                 save_individual_task(NULL, 0L, "", 0);
 989         }
 990 }
 991
 992 /**
 993  * \brief display the editor component for an event
 994  */
 995 void display_edit_event(void) {
 996         long msgnum = 0L;
 997
 998         msgnum = lbstr("msgnum");
 999         if (msgnum > 0L) {
1000                 /* existing event */
1001                 display_using_handler(msgnum, 0,
1002                                       ICAL_VEVENT_COMPONENT,
1003                                       display_edit_individual_event);
1004         }
1005         else {
1006                 /* new event */
1007                 display_edit_individual_event(NULL, 0L, "", 0);
1008         }
1009 }
1010
1011 /**
1012  * \brief save an edited event
1013  */
1014 void save_event(void) {
1015         long msgnum = 0L;
1016
1017         msgnum = lbstr("msgnum");
1018
1019         if (msgnum > 0L) {
1020                 display_using_handler(msgnum, 0,
1021                                       ICAL_VEVENT_COMPONENT,
1022                                       save_individual_event);
1023         }
1024         else {
1025                 save_individual_event(NULL, 0L, "", 0);
1026         }
1027 }
1028
1029
1030
1031
1032
1033 /**
1034  * \brief freebusy display (for client software)
1035  * \param req dunno. ?????
1036  */
1037 void do_freebusy(char *req) {
1038         char who[SIZ];
1039         char buf[SIZ];
1040         char *fb;
1041         int len;
1042
1043         extract_token(who, req, 1, ' ', sizeof who);
1044         if (!strncasecmp(who, "/freebusy/", 10)) {
1045                 strcpy(who, &who[10]);
1046         }
1047         unescape_input(who);
1048
1049         len = strlen(who);
1050         if ( (!strcasecmp(&who[len-4], ".vcf"))
1051              || (!strcasecmp(&who[len-4], ".ifb"))
1052              || (!strcasecmp(&who[len-4], ".vfb")) ) {
1053                 who[len-4] = 0;
1054         }
1055
1056         lprintf(9, "freebusy requested for <%s>\n", who);
1057         serv_printf("ICAL freebusy|%s", who);
1058         serv_getln(buf, sizeof buf);
1059
1060         if (buf[0] != '1') {
1061                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
1062                 output_headers(0, 0, 0, 0, 0, 0);
1063                 wprintf("Content-Type: text/plain\r\n");
1064                 wprintf("\r\n");
1065                 wprintf("%s\n", &buf[4]);
1066                 return;
1067         }
1068
1069         fb = read_server_text();
1070         http_transmit_thing(fb, strlen(fb), "text/calendar", 0);
1071         free(fb);
1072 }
1073
1074
1075
1076
1077
1078 void
1079 InitModule_CALENDAR
1080 (void)
1081 {
1082         WebcitAddUrlHandler(HKEY("display_edit_task"), display_edit_task, 0);
1083         WebcitAddUrlHandler(HKEY("save_task"), save_task, 0);
1084         WebcitAddUrlHandler(HKEY("display_edit_event"), display_edit_event, 0);
1085         WebcitAddUrlHandler(HKEY("save_event"), save_event, 0);
1086         WebcitAddUrlHandler(HKEY("respond_to_request"), respond_to_request, 0);
1087         WebcitAddUrlHandler(HKEY("handle_rsvp"), handle_rsvp, 0);
1088 }