webcit/calendar.c

   1 /*
   2  * $Id$
   3  */
   4 /**
   5  * \defgroup calav Functions which handle calendar objects and their processing/display.
   6  * \ingroup Calendaring
   7  */
   8 /* @{ */
   9
  10 #include "webcit.h"
  11 #include "webserver.h"
  12
  13 #ifndef WEBCIT_WITH_CALENDAR_SERVICE
  14
  15 /**
  16  * \brief get around non existing types
  17  * Handler stubs for builds with no calendar library available
  18  * \param part_source dummy pointer to the source
  19  * \param msgnum number of the mesage in the db
  20  * \param cal_partnum number of the calendar part
  21  */
  22 void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum) {
  23
  24         wprintf(_("<I>This message contains calendaring/scheduling information,"
  25                 " but support for calendars is not available on this "
  26                 "particular system.  Please ask your system administrator to "
  27                 "install a new version of the Citadel web service with "
  28                 "calendaring enabled.</I><br />\n")
  29         );
  30
  31 }
  32
  33 /**
  34  * \brief say we can't display calendar items
  35  * \param msgnum number of the mesage in our db
  36  */
  37 void display_calendar(long msgnum) {
  38         wprintf(_("<i>"
  39                 "Cannot display calendar item.  You are seeing this error "
  40                 "because your WebCit service has not been installed with "
  41                 "calendar support.  Please contact your system administrator."
  42                 "</i><br />\n"));
  43 }
  44
  45 /**
  46  * \brief say we can't display task items
  47  * \param msgnum number of the mesage in our db
  48  */
  49 void display_task(long msgnum) {
  50         wprintf(_("<i>"
  51                 "Cannot display to-do item.  You are seeing this error "
  52                 "because your WebCit service has not been installed with "
  53                 "calendar support.  Please contact your system administrator."
  54                 "</i><br />\n"));
  55 }
  56 /** ok, we have calendaring available */
  57 #else /* WEBCIT_WITH_CALENDAR_SERVICE */
  58
  59
  60 /******   End of handler stubs.  Everything below this line is real.   ******/
  61
  62
  63
  64
  65 /**
  66  * \brief Process a calendar object
  67  * ...at this point it's already been deserialized by cal_process_attachment()
  68  * \param cal the calendar object
  69  * \param recursion_level call stack depth ??????
  70  * \param msgnum number of the mesage in our db
  71  * \param cal_partnum of the calendar object ????
  72  */
  73 void cal_process_object(icalcomponent *cal,
  74                         int recursion_level,
  75                         long msgnum,
  76                         char *cal_partnum
  77 ) {
  78         icalcomponent *c;
  79         icalproperty *method = NULL;
  80         icalproperty_method the_method = ICAL_METHOD_NONE;
  81         icalproperty *p;
  82         struct icaltimetype t;
  83         time_t tt;
  84         char buf[256];
  85         char conflict_name[256];
  86         char conflict_message[256];
  87         int is_update = 0;
  88         char divname[32];
  89         static int divcount = 0;
  90
  91         sprintf(divname, "rsvp%04x", ++divcount);
  92
  93         /** Leading HTML for the display of this object */
  94         if (recursion_level == 0) {
  95                 wprintf("<div align=center><table border=0 bgcolor=\"#ffd\">\n");
  96         }
  97
  98         /** Look for a method */
  99         method = icalcomponent_get_first_property(cal, ICAL_METHOD_PROPERTY);
 100
 101         /** See what we need to do with this */
 102         if (method != NULL) {
 103                 the_method = icalproperty_get_method(method);
 104                 char *title;
 105
 106                 switch(the_method) {
 107                     case ICAL_METHOD_REQUEST:
 108                         title = _("Meeting invitation");
 109                         break;
 110                     case ICAL_METHOD_REPLY:
 111                         title = _("Attendee's reply to your invitation");
 112                         break;
 113                     case ICAL_METHOD_PUBLISH:
 114                         title = _("Published event");
 115                         break;
 116                     default:
 117                         title = _("This is an unknown type of calendar item.");
 118                         break;
 119                 }
 120
 121                 wprintf("<tr><td colspan=\"2\">\n");
 122                 wprintf("<div id=\"%s_title\">", divname);
 123                 wprintf("<img align=\"center\" "
 124                         "src=\"static/calarea_48x.gif\">"
 125                         "&nbsp;&nbsp;<b>%s</b></div></td></TD></TR>\n",
 126                         title
 127                 );
 128         }
 129
 130         p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
 131         if (p != NULL) {
 132                 wprintf("<TR><TD><B>");
 133                 wprintf(_("Summary:"));
 134                 wprintf("</B></TD><TD>");
 135                 escputs((char *)icalproperty_get_comment(p));
 136                 wprintf("</TD></TR>\n");
 137         }
 138
 139         p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
 140         if (p != NULL) {
 141                 wprintf("<TR><TD><B>");
 142                 wprintf(_("Location:"));
 143                 wprintf("</B></TD><TD>");
 144                 escputs((char *)icalproperty_get_comment(p));
 145                 wprintf("</TD></TR>\n");
 146         }
 147
 148         /**
 149          * Only show start/end times if we're actually looking at the VEVENT
 150          * component.  Otherwise it shows bogus dates for things like timezone.
 151          */
 152         if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
 153
 154                 p = icalcomponent_get_first_property(cal,
 155                                                 ICAL_DTSTART_PROPERTY);
 156                 if (p != NULL) {
 157                         t = icalproperty_get_dtstart(p);
 158
 159                         if (t.is_date) {
 160                                 struct tm d_tm;
 161                                 char d_str[32];
 162                                 memset(&d_tm, 0, sizeof d_tm);
 163                                 d_tm.tm_year = t.year - 1900;
 164                                 d_tm.tm_mon = t.month - 1;
 165                                 d_tm.tm_mday = t.day;
 166                                 wc_strftime(d_str, sizeof d_str, "%x", &d_tm);
 167                                 wprintf("<TR><TD><B>");
 168                                 wprintf(_("Date:"));
 169                                 wprintf("</B></TD><TD>%s</TD></TR>", d_str);
 170                         }
 171                         else {
 172                                 tt = icaltime_as_timet(t);
 173                                 fmt_date(buf, tt, 0);
 174                                 wprintf("<TR><TD><B>");
 175                                 wprintf(_("Starting date/time:"));
 176                                 wprintf("</B></TD><TD>%s</TD></TR>", buf);
 177                         }
 178                 }
 179
 180                 p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
 181                 if (p != NULL) {
 182                         t = icalproperty_get_dtend(p);
 183                         tt = icaltime_as_timet(t);
 184                         fmt_date(buf, tt, 0);
 185                         wprintf("<TR><TD><B>");
 186                         wprintf(_("Ending date/time:"));
 187                         wprintf("</B></TD><TD>%s</TD></TR>", buf);
 188                 }
 189
 190         }
 191
 192         p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
 193         if (p != NULL) {
 194                 wprintf("<TR><TD><B>");
 195                 wprintf(_("Description:"));
 196                 wprintf("</B></TD><TD>");
 197                 escputs((char *)icalproperty_get_comment(p));
 198                 wprintf("</TD></TR>\n");
 199         }
 200
 201         /** If the component has attendees, iterate through them. */
 202         for (p = icalcomponent_get_first_property(cal, ICAL_ATTENDEE_PROPERTY); (p != NULL); p = icalcomponent_get_next_property(cal, ICAL_ATTENDEE_PROPERTY)) {
 203                 wprintf("<TR><TD><B>");
 204                 wprintf(_("Attendee:"));
 205                 wprintf("</B></TD><TD>");
 206                 safestrncpy(buf, icalproperty_get_attendee(p), sizeof buf);
 207                 if (!strncasecmp(buf, "MAILTO:", 7)) {
 208
 209                         /** screen name or email address */
 210                         strcpy(buf, &buf[7]);
 211                         striplt(buf);
 212                         escputs(buf);
 213                         wprintf(" ");
 214
 215                         /** participant status */
 216                         partstat_as_string(buf, p);
 217                         escputs(buf);
 218                 }
 219                 wprintf("</TD></TR>\n");
 220         }
 221
 222         /** If the component has subcomponents, recurse through them. */
 223         for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
 224             (c != 0);
 225             c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
 226                 /* Recursively process subcomponent */
 227                 cal_process_object(c, recursion_level+1, msgnum, cal_partnum);
 228         }
 229
 230         /** If this is a REQUEST, display conflicts and buttons */
 231         if (the_method == ICAL_METHOD_REQUEST) {
 232
 233                 /* Check for conflicts */
 234                 lprintf(9, "Checking server calendar for conflicts...\n");
 235                 serv_printf("ICAL conflicts|%ld|%s|", msgnum, cal_partnum);
 236                 serv_getln(buf, sizeof buf);
 237                 if (buf[0] == '1') {
 238                         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 239                                 extract_token(conflict_name, buf, 3, '|', sizeof conflict_name);
 240                                 is_update = extract_int(buf, 4);
 241
 242                                 if (is_update) {
 243                                         snprintf(conflict_message, sizeof conflict_message,
 244                                                 _("This is an update of '%s' which is already in your calendar."), conflict_name);
 245                                 }
 246                                 else {
 247                                         snprintf(conflict_message, sizeof conflict_message,
 248                                                 _("This event would conflict with '%s' which is already in your calendar."), conflict_name);
 249                                 }
 250
 251                                 wprintf("<TR><TD><B><I>%s</I></B></TD><td>",
 252                                         (is_update ?
 253                                                 _("Update:") :
 254                                                 _("CONFLICT:")
 255                                         )
 256                                 );
 257                                 escputs(conflict_message);
 258                                 wprintf("</TD></TR>\n");
 259                         }
 260                 }
 261                 lprintf(9, "...done.\n");
 262
 263                 /** Display the Accept/Decline buttons */
 264                 wprintf("<tr><td colspan=2>"
 265                         "<div id=\"%s_question\">"
 266                         "%s "
 267                         "<font size=+1>"
 268                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Accept');\">%s</a>"
 269                         " | "
 270                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Tentative');\">%s</a>"
 271                         " | "
 272                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Decline');\">%s</a>"
 273                         "</font>"
 274                         "</div>"
 275                         "</td></tr>\n",
 276                         divname,
 277                         _("How would you like to respond to this invitation?"),
 278                         divname, divname, msgnum, cal_partnum, _("Accept"),
 279                         divname, divname, msgnum, cal_partnum, _("Tentative"),
 280                         divname, divname, msgnum, cal_partnum, _("Decline")
 281                 );
 282
 283         }
 284
 285         /** If this is a REPLY, display update button */
 286         if (the_method == ICAL_METHOD_REPLY) {
 287
 288                 /** \todo  In the future, if we want to validate this object before \
 289                  * continuing, we can do it this way:
 290                 serv_printf("ICAL whatever|%ld|%s|", msgnum, cal_partnum);
 291                 serv_getln(buf, sizeof buf);
 292                 }
 293                  ***********/
 294
 295                 /** Display the update buttons */
 296                 wprintf("<tr><td colspan=2>"
 297                         "<div id=\"%s_question\">"
 298                         "%s"
 299                         "<font size=+1>"
 300                         "<a href=\"javascript:HandleRSVP('%s_question','%s_title','%ld','%s','Update');\">%s</a>"
 301                         " | "
 302                         "<a href=\"javascript:HandleRSVP('%s_question','%s_title','%ld','%s','Ignore');\">%s</a>"
 303                         "</font>"
 304                         "</div>"
 305                         "</td></tr>\n",
 306                         divname,
 307                         _("Click <i>Update</i> to accept this reply and update your calendar."),
 308                         divname, divname, msgnum, cal_partnum, _("Update"),
 309                         divname, divname, msgnum, cal_partnum, _("Ignore")
 310                 );
 311
 312         }
 313
 314         /** Trailing HTML for the display of this object */
 315         if (recursion_level == 0) {
 316                 wprintf("</tr></table></div>\n");
 317         }
 318 }
 319
 320
 321 /**
 322  * \brief process calendar mail atachment
 323  * Deserialize a calendar object in a message so it can be processed.
 324  * (This is the main entry point for these things)
 325  * \param part_source the part of the message we want to parse
 326  * \param msgnum number of the mesage in our db
 327  * \param cal_partnum the number of the calendar item
 328  */
 329 void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum) {
 330         icalcomponent *cal;
 331
 332         cal = icalcomponent_new_from_string(part_source);
 333
 334         if (cal == NULL) {
 335                 wprintf(_("There was an error parsing this calendar item."));
 336                 wprintf("<br />\n");
 337                 return;
 338         }
 339
 340         ical_dezonify(cal);
 341         cal_process_object(cal, 0, msgnum, cal_partnum);
 342
 343         /* Free the memory we obtained from libical's constructor */
 344         icalcomponent_free(cal);
 345 }
 346
 347
 348
 349
 350 /**
 351  * \brief accept/decline meeting
 352  * Respond to a meeting request
 353  */
 354 void respond_to_request(void) {
 355         char buf[1024];
 356
 357         begin_ajax_response();
 358
 359         serv_printf("ICAL respond|%s|%s|%s|",
 360                 bstr("msgnum"),
 361                 bstr("cal_partnum"),
 362                 bstr("sc")
 363         );
 364         serv_getln(buf, sizeof buf);
 365
 366         if (buf[0] == '2') {
 367                 wprintf("<table border=0 cellpadding=0><tr><td>");
 368                 wprintf("<td><img align=\"center\" src=\"static/calarea_48x.gif\"></td><td><b><i>");
 369                 if (!strcasecmp(bstr("sc"), "accept")) {
 370                         wprintf(_("You have accepted this meeting invitation.  "
 371                                 "It has been entered into your calendar.")
 372                         );
 373                 } else if (!strcasecmp(bstr("sc"), "tentative")) {
 374                         wprintf(_("You have tentatively accepted this meeting invitation.  "
 375                                 "It has been 'pencilled in' to your calendar.")
 376                         );
 377                 } else if (!strcasecmp(bstr("sc"), "decline")) {
 378                         wprintf(_("You have declined this meeting invitation.  "
 379                                 "It has <b>not</b> been entered into your calendar.")
 380                         );
 381                 }
 382                 wprintf(" ");
 383                 wprintf(_("A reply has been sent to the meeting organizer."));
 384                 wprintf("</i></b></td></tr></table>");
 385         } else {
 386                 wprintf("<img align=\"center\" src=\"static/error.gif\">&nbsp;<b><i>");
 387                 wprintf("%s\n", &buf[4]);
 388         }
 389
 390         end_ajax_response();
 391 }
 392
 393
 394
 395 /**
 396  * \brief Handle an incoming RSVP
 397  */
 398 void handle_rsvp(void) {
 399         char buf[1024];
 400
 401         begin_ajax_response();
 402
 403         serv_printf("ICAL handle_rsvp|%s|%s|%s|",
 404                 bstr("msgnum"),
 405                 bstr("cal_partnum"),
 406                 bstr("sc")
 407         );
 408         serv_getln(buf, sizeof buf);
 409
 410         if (buf[0] == '2') {
 411                 wprintf("<table border=0 cellpadding=0><tr><td>");
 412                 wprintf("<td><img align=\"center\" src=\"static/calarea_48x.gif\"></td><td><b><i>");
 413                 if (!strcasecmp(bstr("sc"), "update")) {
 414                         wprintf(_("Your calendar has been updated to reflect this RSVP."));
 415                 } else if (!strcasecmp(bstr("sc"), "ignore")) {
 416                         wprintf(_("You have chosen to ignore this RSVP. "
 417                                 "Your calendar has <b>not</b> been updated.")
 418                         );
 419                 }
 420                 wprintf("</i></b></td></tr></table>");
 421         } else {
 422                 wprintf("<img src=\"static/error.gif\" align=center> %s\n", &buf[4]);
 423         }
 424
 425         end_ajax_response();
 426
 427 }
 428
 429
 430
 431 /*@}*/
 432 /*-----------------------------------------------------------------------**/
 433
 434
 435
 436 /**
 437  * \defgroup MsgDisplayHandlers Display handlers for message reading
 438  * \ingroup Calendaring
 439  */
 440
 441 /*@{*/
 442
 443
 444
 445 /**
 446  * \brief get items, keep them.
 447  * If we're reading calendar items, just store them for now.  We have to
 448  * sort and re-output them later when we draw the calendar.
 449  * \param cal Our calendar to process
 450  * \param msgnum number of the mesage in our db
 451  */
 452 void display_individual_cal(icalcomponent *cal, long msgnum) {
 453
 454         WC->num_cal += 1;
 455
 456         WC->disp_cal = realloc(WC->disp_cal,
 457                         (sizeof(struct disp_cal) * WC->num_cal) );
 458         WC->disp_cal[WC->num_cal - 1].cal = icalcomponent_new_clone(cal);
 459
 460         WC->disp_cal[WC->num_cal - 1].cal_msgnum = msgnum;
 461 }
 462
 463
 464
 465 /*
 466  * \brief edit a task
 467  * Display a task by itself (for editing)
 468  * \param supplied_vtodo the todo item we want to edit
 469  * \param msgnum number of the mesage in our db
 470  */
 471 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 472         icalcomponent *vtodo;
 473         icalproperty *p;
 474         struct icaltimetype t;
 475         time_t now;
 476         int created_new_vtodo = 0;
 477
 478         now = time(NULL);
 479
 480         if (supplied_vtodo != NULL) {
 481                 vtodo = supplied_vtodo;
 482
 483                 /**
 484                  * If we're looking at a fully encapsulated VCALENDAR
 485                  * rather than a VTODO component, attempt to use the first
 486                  * relevant VTODO subcomponent.  If there is none, the
 487                  * NULL returned by icalcomponent_get_first_component() will
 488                  * tell the next iteration of this function to create a
 489                  * new one.
 490                  */
 491                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 492                         display_edit_individual_task(
 493                                 icalcomponent_get_first_component(
 494                                         vtodo, ICAL_VTODO_COMPONENT
 495                                 ), msgnum
 496                         );
 497                         return;
 498                 }
 499         }
 500         else {
 501                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 502                 created_new_vtodo = 1;
 503         }
 504
 505         output_headers(1, 1, 2, 0, 0, 0);
 506         wprintf("<div id=\"banner\">\n"
 507                 "<TABLE class=\"calendar_banner\"><TR>"
 508                 "<TD><img src=\"static/taskmanag_48x.gif\"></TD>"
 509                 "<td><SPAN CLASS=\"titlebar\">");
 510         wprintf(_("Edit task"));
 511         wprintf("</SPAN>"
 512                 "</TD></TR></TABLE>\n"
 513                 "</div>\n<div id=\"content\">\n"
 514         );
 515
 516         wprintf("<div class=\"fix_scrollbar_bug\">"
 517                 "<table class=\"calendar_background\"><tr><td>");
 518
 519         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 520         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%ld\">\n", WC->nonce);
 521         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 522                 msgnum);
 523
 524         wprintf("<TABLE border=0>\n");
 525
 526         wprintf("<TR><TD>");
 527         wprintf(_("Summary:"));
 528         wprintf("</TD><TD>"
 529                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 530                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 531         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 532         if (p != NULL) {
 533                 escputs((char *)icalproperty_get_comment(p));
 534         }
 535         wprintf("\"></TD></TR>\n");
 536
 537         wprintf("<TR><TD>");
 538         wprintf(_("Start date:"));
 539         wprintf("</TD><TD>");
 540         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 541         if (p != NULL) {
 542                 t = icalproperty_get_dtstart(p);
 543         }
 544         else {
 545                 t = icaltime_from_timet(now, 0);
 546         }
 547         display_icaltimetype_as_webform(&t, "dtstart");
 548         wprintf("</TD></TR>\n");
 549
 550         wprintf("<TR><TD>");
 551         wprintf(_("Due date:"));
 552         wprintf("</TD><TD>");
 553         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 554         if (p != NULL) {
 555                 t = icalproperty_get_due(p);
 556         }
 557         else {
 558                 t = icaltime_from_timet(now, 0);
 559         }
 560         display_icaltimetype_as_webform(&t, "due");
 561         wprintf("</TD></TR>\n");
 562         wprintf("<TR><TD>");
 563         wprintf(_("Description:"));
 564         wprintf("</TD><TD>");
 565         wprintf("<TEXTAREA NAME=\"description\" wrap=soft "
 566                 "ROWS=10 COLS=80 WIDTH=80>\n"
 567         );
 568         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 569         if (p != NULL) {
 570                 escputs((char *)icalproperty_get_comment(p));
 571         }
 572         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 573
 574         wprintf("<CENTER>"
 575                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 576                 "&nbsp;&nbsp;"
 577                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 578                 "&nbsp;&nbsp;"
 579                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 580                 "</CENTER>\n",
 581                 _("Save"),
 582                 _("Delete"),
 583                 _("Cancel")
 584         );
 585
 586         wprintf("</FORM>\n");
 587
 588         wprintf("</td></tr></table></div>\n");
 589         wDumpContent(1);
 590
 591         if (created_new_vtodo) {
 592                 icalcomponent_free(vtodo);
 593         }
 594 }
 595
 596 /*
 597  * \brief Save an edited task
 598  * \param supplied_vtodo the task to save
 599  * \param msgnum number of the mesage in our db
 600  */
 601 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 602         char buf[SIZ];
 603         int delete_existing = 0;
 604         icalproperty *prop;
 605         icalcomponent *vtodo, *encaps;
 606         int created_new_vtodo = 0;
 607         int i;
 608         int sequence = 0;
 609         struct icaltimetype t;
 610
 611         if (supplied_vtodo != NULL) {
 612                 vtodo = supplied_vtodo;
 613                 /**
 614                  * If we're looking at a fully encapsulated VCALENDAR
 615                  * rather than a VTODO component, attempt to use the first
 616                  * relevant VTODO subcomponent.  If there is none, the
 617                  * NULL returned by icalcomponent_get_first_component() will
 618                  * tell the next iteration of this function to create a
 619                  * new one.
 620                  */
 621                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 622                         save_individual_task(
 623                                 icalcomponent_get_first_component(
 624                                         vtodo, ICAL_VTODO_COMPONENT
 625                                 ), msgnum
 626                         );
 627                         return;
 628                 }
 629         }
 630         else {
 631                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 632                 created_new_vtodo = 1;
 633         }
 634
 635         if (!IsEmptyStr(bstr("save_button"))) {
 636
 637                 /** Replace values in the component with ones from the form */
 638
 639                 while (prop = icalcomponent_get_first_property(vtodo,
 640                       ICAL_SUMMARY_PROPERTY), prop != NULL) {
 641                         icalcomponent_remove_property(vtodo, prop);
 642                         icalproperty_free(prop);
 643                 }
 644                 icalcomponent_add_property(vtodo,
 645                         icalproperty_new_summary(bstr("summary")));
 646
 647                 while (prop = icalcomponent_get_first_property(vtodo,
 648                       ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 649                         icalcomponent_remove_property(vtodo, prop);
 650                         icalproperty_free(prop);
 651                 }
 652                 icalcomponent_add_property(vtodo,
 653                         icalproperty_new_description(bstr("description")));
 654
 655                 while (prop = icalcomponent_get_first_property(vtodo,
 656                       ICAL_DTSTART_PROPERTY), prop != NULL) {
 657                         icalcomponent_remove_property(vtodo, prop);
 658                         icalproperty_free(prop);
 659                 }
 660                 icaltime_from_webform(&t, "dtstart");
 661                 icalcomponent_add_property(vtodo,
 662                         icalproperty_new_dtstart(t)
 663                 );
 664
 665                 while (prop = icalcomponent_get_first_property(vtodo,
 666                       ICAL_DUE_PROPERTY), prop != NULL) {
 667                         icalcomponent_remove_property(vtodo, prop);
 668                         icalproperty_free(prop);
 669                 }
 670                 icaltime_from_webform(&t, "due");
 671                 icalcomponent_add_property(vtodo,
 672                         icalproperty_new_due(t)
 673                 );
 674
 675                 /** Give this task a UID if it doesn't have one. */
 676                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 677                 if (icalcomponent_get_first_property(vtodo,
 678                    ICAL_UID_PROPERTY) == NULL) {
 679                         generate_uuid(buf);
 680                         icalcomponent_add_property(vtodo,
 681                                 icalproperty_new_uid(buf)
 682                         );
 683                 }
 684
 685                 /** Increment the sequence ID */
 686                 lprintf(9, "Increment the sequence ID\n");
 687                 while (prop = icalcomponent_get_first_property(vtodo,
 688                       ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 689                         i = icalproperty_get_sequence(prop);
 690                         lprintf(9, "Sequence was %d\n", i);
 691                         if (i > sequence) sequence = i;
 692                         icalcomponent_remove_property(vtodo, prop);
 693                         icalproperty_free(prop);
 694                 }
 695                 ++sequence;
 696                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 697                 icalcomponent_add_property(vtodo,
 698                         icalproperty_new_sequence(sequence)
 699                 );
 700
 701                 /**
 702                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 703                  * for two reasons: one, it's easier to just free the whole thing
 704                  * when we're done instead of unbundling, but more importantly, we
 705                  * can't encapsulate something that may already be encapsulated
 706                  * somewhere else.
 707                  */
 708                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 709                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 710
 711                 /* Serialize it and save it to the message base */
 712                 serv_puts("ENT0 1|||4");
 713                 serv_getln(buf, sizeof buf);
 714                 if (buf[0] == '4') {
 715                         serv_puts("Content-type: text/calendar");
 716                         serv_puts("");
 717                         serv_puts(icalcomponent_as_ical_string(encaps));
 718                         serv_puts("000");
 719
 720                         /**
 721                          * Probably not necessary; the server will see the UID
 722                          * of the object and delete the old one anyway, but
 723                          * just in case...
 724                          */
 725                         delete_existing = 1;
 726                 }
 727                 icalcomponent_free(encaps);
 728         }
 729
 730         /**
 731          * If the user clicked 'Delete' then explicitly delete the message.
 732          */
 733         if (!IsEmptyStr(bstr("delete_button"))) {
 734                 delete_existing = 1;
 735         }
 736
 737         if ( (delete_existing) && (msgnum > 0L) ) {
 738                 serv_printf("DELE %ld", atol(bstr("msgnum")));
 739                 serv_getln(buf, sizeof buf);
 740         }
 741
 742         if (created_new_vtodo) {
 743                 icalcomponent_free(vtodo);
 744         }
 745
 746         /** Go back to the task list */
 747         readloop("readfwd");
 748 }
 749
 750
 751
 752 /**
 753  * \brief generic item handler
 754  * Code common to all display handlers.  Given a message number and a MIME
 755  * type, we load the message and hunt for that MIME type.  If found, we load
 756  * the relevant part, deserialize it into a libical component, filter it for
 757  * the requested object type, and feed it to the specified handler.
 758  * \param mimetype mimetyp of our object
 759  * \param which_kind sort of ical type
 760  * \param msgnum number of the mesage in our db
 761  * \param callback a funcion \todo
 762  *
 763  */
 764 void display_using_handler(long msgnum,
 765                         char *mimetype,
 766                         icalcomponent_kind which_kind,
 767                         void (*callback)(icalcomponent *, long)
 768         ) {
 769         char buf[1024];
 770         char mime_partnum[256];
 771         char mime_filename[256];
 772         char mime_content_type[256];
 773         char mime_disposition[256];
 774         int mime_length;
 775         char relevant_partnum[256];
 776         char *relevant_source = NULL;
 777         icalcomponent *cal, *c;
 778
 779         sprintf(buf, "MSG0 %ld|0", msgnum);     /* unfortunately we need the mime headers */
 780         serv_puts(buf);
 781         serv_getln(buf, sizeof buf);
 782         if (buf[0] != '1') return;
 783
 784         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 785                 if (!strncasecmp(buf, "part=", 5)) {
 786                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 787                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 788                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 789                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 790                         mime_length = extract_int(&buf[5], 5);
 791
 792                         if (!strcasecmp(mime_content_type, "text/calendar")) {
 793                                 strcpy(relevant_partnum, mime_partnum);
 794                         }
 795
 796                 }
 797         }
 798
 799         if (!IsEmptyStr(relevant_partnum)) {
 800                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 801                 if (relevant_source != NULL) {
 802
 803                         cal = icalcomponent_new_from_string(relevant_source);
 804                         if (cal != NULL) {
 805
 806                                 ical_dezonify(cal);
 807
 808                                 /** Simple components of desired type */
 809                                 if (icalcomponent_isa(cal) == which_kind) {
 810                                         callback(cal, msgnum);
 811                                 }
 812
 813                                 /** Subcomponents of desired type */
 814                                 for (c = icalcomponent_get_first_component(cal,
 815                                     which_kind);
 816                                     (c != 0);
 817                                     c = icalcomponent_get_next_component(cal,
 818                                     which_kind)) {
 819                                         callback(c, msgnum);
 820                                 }
 821                                 icalcomponent_free(cal);
 822                         }
 823                         free(relevant_source);
 824                 }
 825         }
 826
 827 }
 828
 829 /**
 830  * \brief display whole calendar
 831  * \param msgnum number of the mesage in our db
 832  */
 833 void display_calendar(long msgnum) {
 834         display_using_handler(msgnum, "text/calendar",
 835                                 ICAL_VEVENT_COMPONENT,
 836                                 display_individual_cal);
 837 }
 838
 839 /**
 840  * \brief display whole taksview
 841  * \param msgnum number of the mesage in our db
 842  */
 843 void display_task(long msgnum) {
 844         display_using_handler(msgnum, "text/calendar",
 845                                 ICAL_VTODO_COMPONENT,
 846                                 display_individual_cal);
 847 }
 848
 849 /**
 850  * \brief display the editor component for a task
 851  */
 852 void display_edit_task(void) {
 853         long msgnum = 0L;
 854
 855         /** Force change the room if we have to */
 856         if (!IsEmptyStr(bstr("taskrm"))) {
 857                 gotoroom(bstr("taskrm"));
 858         }
 859
 860         msgnum = atol(bstr("msgnum"));
 861         if (msgnum > 0L) {
 862                 /** existing task */
 863                 display_using_handler(msgnum, "text/calendar",
 864                                 ICAL_VTODO_COMPONENT,
 865                                 display_edit_individual_task);
 866         }
 867         else {
 868                 /** new task */
 869                 display_edit_individual_task(NULL, 0L);
 870         }
 871 }
 872
 873 /**
 874  *\brief save an edited task
 875  */
 876 void save_task(void) {
 877         long msgnum = 0L;
 878
 879         msgnum = atol(bstr("msgnum"));
 880         if (msgnum > 0L) {
 881                 display_using_handler(msgnum, "text/calendar",
 882                                 ICAL_VTODO_COMPONENT,
 883                                 save_individual_task);
 884         }
 885         else {
 886                 save_individual_task(NULL, 0L);
 887         }
 888 }
 889
 890 /**
 891  * \brief display the editor component for an event
 892  */
 893 void display_edit_event(void) {
 894         long msgnum = 0L;
 895
 896         msgnum = atol(bstr("msgnum"));
 897         if (msgnum > 0L) {
 898                 /* existing event */
 899                 display_using_handler(msgnum, "text/calendar",
 900                                 ICAL_VEVENT_COMPONENT,
 901                                 display_edit_individual_event);
 902         }
 903         else {
 904                 /* new event */
 905                 display_edit_individual_event(NULL, 0L);
 906         }
 907 }
 908
 909 /**
 910  * \brief save an edited event
 911  */
 912 void save_event(void) {
 913         long msgnum = 0L;
 914
 915         msgnum = atol(bstr("msgnum"));
 916
 917         if (msgnum > 0L) {
 918                 display_using_handler(msgnum, "text/calendar",
 919                                 ICAL_VEVENT_COMPONENT,
 920                                 save_individual_event);
 921         }
 922         else {
 923                 save_individual_event(NULL, 0L);
 924         }
 925 }
 926
 927
 928
 929
 930
 931 /**
 932  * \brief freebusy display (for client software)
 933  * \param req dunno. ?????
 934  */
 935 void do_freebusy(char *req) {
 936         char who[SIZ];
 937         char buf[SIZ];
 938         char *fb;
 939         int len;
 940
 941         extract_token(who, req, 1, ' ', sizeof who);
 942         if (!strncasecmp(who, "/freebusy/", 10)) {
 943                 strcpy(who, &who[10]);
 944         }
 945         unescape_input(who);
 946
 947         len = strlen(who);
 948         if ( (!strcasecmp(&who[len-4], ".vcf"))
 949            || (!strcasecmp(&who[len-4], ".ifb"))
 950            || (!strcasecmp(&who[len-4], ".vfb")) ) {
 951                 who[len-4] = 0;
 952         }
 953
 954         lprintf(9, "freebusy requested for <%s>\n", who);
 955         serv_printf("ICAL freebusy|%s", who);
 956         serv_getln(buf, sizeof buf);
 957
 958         if (buf[0] != '1') {
 959                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
 960                 output_headers(0, 0, 0, 0, 0, 0);
 961                 wprintf("Content-Type: text/plain\r\n");
 962                 wprintf("\r\n");
 963                 wprintf("%s\n", &buf[4]);
 964                 return;
 965         }
 966
 967         fb = read_server_text();
 968         http_transmit_thing(fb, strlen(fb), "text/calendar", 0);
 969         free(fb);
 970 }
 971
 972
 973
 974 #endif /* WEBCIT_WITH_CALENDAR_SERVICE */
 975
 976
 977 /*@}*/