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 class=\"mimepart\">\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                 wprintf("<div id=\"%s_title\">", divname);
 107                 wprintf("<img src=\"static/calarea_48x.gif\">");
 108                 wprintf("<span>");
 109                 switch(the_method) {
 110                     case ICAL_METHOD_REQUEST:
 111                         title = _("Meeting invitation");
 112                         break;
 113                     case ICAL_METHOD_REPLY:
 114                         title = _("Attendee's reply to your invitation");
 115                         break;
 116                     case ICAL_METHOD_PUBLISH:
 117                         title = _("Published event");
 118                         break;
 119                     default:
 120                         title = _("This is an unknown type of calendar item.");
 121                         break;
 122                 }
 123                 wprintf("</span>");
 124
 125                 wprintf("&nbsp;&nbsp;%s",title);
 126                 wprintf("</div>");
 127         }
 128
 129         wprintf("<dl>");
 130         p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
 131         if (p != NULL) {
 132                 wprintf("<dt>");
 133                 wprintf(_("Summary:"));
 134                 wprintf("</dt><dd>");
 135                 escputs((char *)icalproperty_get_comment(p));
 136                 wprintf("</dd>\n");
 137         }
 138
 139         p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
 140         if (p != NULL) {
 141                 wprintf("<dt>");
 142                 wprintf(_("Location:"));
 143                 wprintf("</dt><dd>");
 144                 escputs((char *)icalproperty_get_comment(p));
 145                 wprintf("</dd>\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("<dt>");
 168                                 wprintf(_("Date:"));
 169                                 wprintf("</dt><dd>%s</dd>", d_str);
 170                         }
 171                         else {
 172                                 tt = icaltime_as_timet(t);
 173                                 webcit_fmt_date(buf, tt, 0);
 174                                 wprintf("<dt>");
 175                                 wprintf(_("Starting date/time:"));
 176                                 wprintf("</dt><dd>%s</dd>", 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                         webcit_fmt_date(buf, tt, 0);
 185                         wprintf("<dt>");
 186                         wprintf(_("Ending date/time:"));
 187                         wprintf("</dt><dd>%s</dd>", buf);
 188                 }
 189
 190         }
 191
 192         p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
 193         if (p != NULL) {
 194                 wprintf("<dt>");
 195                 wprintf(_("Description:"));
 196                 wprintf("</dt><dd>");
 197                 escputs((char *)icalproperty_get_comment(p));
 198                 wprintf("</dd>\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("<dt>");
 204                 wprintf(_("Attendee:"));
 205                 wprintf("</dt><dd>");
 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("</dd>\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("<dt>%s",
 252                                         (is_update ?
 253                                                 _("Update:") :
 254                                                 _("CONFLICT:")
 255                                         )
 256                                 );
 257                                 wprintf("</dt><dd>");
 258                                 escputs(conflict_message);
 259                                 wprintf("</dd>\n");
 260                         }
 261                 }
 262                 lprintf(9, "...done.\n");
 263
 264                 wprintf("</dl>");
 265
 266                 /** Display the Accept/Decline buttons */
 267                 wprintf("<p id=\"%s_question\">"
 268                         "%s "
 269                         "&nbsp;&nbsp;&nbsp;<span class=\"button_link\"> "
 270                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Accept');\">%s</a>"
 271                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 272                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Tentative');\">%s</a>"
 273                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 274                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Decline');\">%s</a>"
 275                         "</span></p>\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("<p id=\"%s_question\" >"
 297                         "%s "
 298                         "&nbsp;&nbsp;&nbsp;<span class=\"button_link\"> "
 299                         "<a href=\"javascript:HandleRSVP('%s_question','%s_title','%ld','%s','Update');\">%s</a>"
 300                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 301                         "<a href=\"javascript:HandleRSVP('%s_question','%s_title','%ld','%s','Ignore');\">%s</a>"
 302                         "</span></p>\n",
 303                         divname,
 304                         _("Click <i>Update</i> to accept this reply and update your calendar."),
 305                         divname, divname, msgnum, cal_partnum, _("Update"),
 306                         divname, divname, msgnum, cal_partnum, _("Ignore")
 307                 );
 308
 309         }
 310
 311         /** Trailing HTML for the display of this object */
 312         if (recursion_level == 0) {
 313                 wprintf("<p>&nbsp;</p></div>\n");
 314         }
 315 }
 316
 317
 318 /**
 319  * \brief process calendar mail atachment
 320  * Deserialize a calendar object in a message so it can be processed.
 321  * (This is the main entry point for these things)
 322  * \param part_source the part of the message we want to parse
 323  * \param msgnum number of the mesage in our db
 324  * \param cal_partnum the number of the calendar item
 325  */
 326 void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum) {
 327         icalcomponent *cal;
 328
 329         cal = icalcomponent_new_from_string(part_source);
 330
 331         if (cal == NULL) {
 332                 wprintf(_("There was an error parsing this calendar item."));
 333                 wprintf("<br />\n");
 334                 return;
 335         }
 336
 337         ical_dezonify(cal);
 338         cal_process_object(cal, 0, msgnum, cal_partnum);
 339
 340         /* Free the memory we obtained from libical's constructor */
 341         icalcomponent_free(cal);
 342 }
 343
 344
 345
 346
 347 /**
 348  * \brief accept/decline meeting
 349  * Respond to a meeting request
 350  */
 351 void respond_to_request(void) {
 352         char buf[1024];
 353
 354         begin_ajax_response();
 355
 356         serv_printf("ICAL respond|%s|%s|%s|",
 357                 bstr("msgnum"),
 358                 bstr("cal_partnum"),
 359                 bstr("sc")
 360         );
 361         serv_getln(buf, sizeof buf);
 362
 363         if (buf[0] == '2') {
 364                 wprintf("<img src=\"static/calarea_48x.gif\"><span>");
 365                 if (!strcasecmp(bstr("sc"), "accept")) {
 366                         wprintf(_("You have accepted this meeting invitation.  "
 367                                 "It has been entered into your calendar.")
 368                         );
 369                 } else if (!strcasecmp(bstr("sc"), "tentative")) {
 370                         wprintf(_("You have tentatively accepted this meeting invitation.  "
 371                                 "It has been 'pencilled in' to your calendar.")
 372                         );
 373                 } else if (!strcasecmp(bstr("sc"), "decline")) {
 374                         wprintf(_("You have declined this meeting invitation.  "
 375                                 "It has <b>not</b> been entered into your calendar.")
 376                         );
 377                 }
 378                 wprintf(" ");
 379                 wprintf(_("A reply has been sent to the meeting organizer."));
 380                 wprintf("</span>");
 381         } else {
 382                 wprintf("<img align=\"center\" src=\"static/error.gif\"><span>");
 383                 wprintf("%s\n", &buf[4]);
 384                 wprintf("</span>");
 385         }
 386
 387         end_ajax_response();
 388 }
 389
 390
 391
 392 /**
 393  * \brief Handle an incoming RSVP
 394  */
 395 void handle_rsvp(void) {
 396         char buf[1024];
 397
 398         begin_ajax_response();
 399
 400         serv_printf("ICAL handle_rsvp|%s|%s|%s|",
 401                 bstr("msgnum"),
 402                 bstr("cal_partnum"),
 403                 bstr("sc")
 404         );
 405         serv_getln(buf, sizeof buf);
 406
 407         if (buf[0] == '2') {
 408                 wprintf("<img src=\"static/calarea_48x.gif\"><span>");
 409                 if (!strcasecmp(bstr("sc"), "update")) {
 410                         wprintf(_("Your calendar has been updated to reflect this RSVP."));
 411                 } else if (!strcasecmp(bstr("sc"), "ignore")) {
 412                         wprintf(_("You have chosen to ignore this RSVP. "
 413                                 "Your calendar has <b>not</b> been updated.")
 414                         );
 415                 }
 416                 wprintf("</span>");
 417         } else {
 418                 wprintf("<img src=\"static/error.gif\"><span> %s\n", &buf[4]);
 419                 wprintf("</span>");
 420         }
 421
 422         end_ajax_response();
 423
 424 }
 425
 426
 427
 428 /*@}*/
 429 /*-----------------------------------------------------------------------**/
 430
 431
 432
 433 /**
 434  * \defgroup MsgDisplayHandlers Display handlers for message reading
 435  * \ingroup Calendaring
 436  */
 437
 438 /*@{*/
 439
 440
 441
 442 /**
 443  * \brief get items, keep them.
 444  * If we're reading calendar items, just store them for now.  We have to
 445  * sort and re-output them later when we draw the calendar.
 446  * \param cal Our calendar to process
 447  * \param msgnum number of the mesage in our db
 448  */
 449 void display_individual_cal(icalcomponent *cal, long msgnum, char *from, int unread)
 450 {
 451         struct wcsession *WCC = WC;     /* stack this for faster access (WC is a function) */
 452
 453         WCC->num_cal += 1;
 454         WCC->disp_cal = realloc(WC->disp_cal, (sizeof(struct disp_cal) * WCC->num_cal) );
 455         WCC->disp_cal[WCC->num_cal - 1].cal = icalcomponent_new_clone(cal);
 456         WCC->disp_cal[WCC->num_cal - 1].unread = unread;
 457         WCC->disp_cal[WCC->num_cal - 1].from = malloc (strlen(from) + 1);
 458         strcpy (WCC->disp_cal[WCC->num_cal - 1].from, from);
 459         ical_dezonify(WCC->disp_cal[WCC->num_cal - 1].cal);
 460         WCC->disp_cal[WCC->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, char *from, int unread) {
 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                                         ),
 496                                 msgnum,
 497                                 from, unread
 498                         );
 499                         return;
 500                 }
 501         }
 502         else {
 503                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 504                 created_new_vtodo = 1;
 505         }
 506
 507         output_headers(1, 1, 2, 0, 0, 0);
 508         wprintf("<div id=\"banner\">\n");
 509         wprintf("<img src=\"static/taskmanag_48x.gif\">");
 510         wprintf("<h1>");
 511         wprintf(_("Edit task"));
 512         wprintf("</h1>");
 513         wprintf("</div>\n");
 514
 515         wprintf("<div id=\"content\" class=\"service\">\n");
 516
 517         wprintf("<div class=\"fix_scrollbar_bug\">"
 518                 "<table class=\"calendar_background\"><tr><td>");
 519
 520         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 521         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%ld\">\n", WC->nonce);
 522         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 523                 msgnum);
 524
 525         wprintf("<TABLE border=0>\n");
 526
 527         wprintf("<TR><TD>");
 528         wprintf(_("Summary:"));
 529         wprintf("</TD><TD>"
 530                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 531                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 532         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 533         if (p != NULL) {
 534                 escputs((char *)icalproperty_get_comment(p));
 535         }
 536         wprintf("\"></TD></TR>\n");
 537
 538         wprintf("<TR><TD>");
 539         wprintf(_("Start date:"));
 540         wprintf("</TD><TD>");
 541         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 542         if (p != NULL) {
 543                 t = icalproperty_get_dtstart(p);
 544         }
 545         else {
 546                 t = icaltime_from_timet(now, 0);
 547         }
 548         display_icaltimetype_as_webform(&t, "dtstart");
 549         wprintf("</TD></TR>\n");
 550
 551         wprintf("<TR><TD>");
 552         wprintf(_("Due date:"));
 553         wprintf("</TD><TD>");
 554         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 555         if (p != NULL) {
 556                 t = icalproperty_get_due(p);
 557         }
 558         else {
 559                 t = icaltime_from_timet(now, 0);
 560         }
 561         display_icaltimetype_as_webform(&t, "due");
 562         wprintf("</TD></TR>\n");
 563         wprintf("<TR><TD>");
 564         wprintf(_("Description:"));
 565         wprintf("</TD><TD>");
 566         wprintf("<TEXTAREA NAME=\"description\" wrap=soft "
 567                 "ROWS=10 COLS=80 WIDTH=80>\n"
 568         );
 569         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 570         if (p != NULL) {
 571                 escputs((char *)icalproperty_get_comment(p));
 572         }
 573         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 574
 575         wprintf("<CENTER>"
 576                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 577                 "&nbsp;&nbsp;"
 578                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 579                 "&nbsp;&nbsp;"
 580                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 581                 "</CENTER>\n",
 582                 _("Save"),
 583                 _("Delete"),
 584                 _("Cancel")
 585         );
 586
 587         wprintf("</FORM>\n");
 588
 589         wprintf("</td></tr></table></div>\n");
 590         wDumpContent(1);
 591
 592         if (created_new_vtodo) {
 593                 icalcomponent_free(vtodo);
 594         }
 595 }
 596
 597 /*
 598  * \brief Save an edited task
 599  * \param supplied_vtodo the task to save
 600  * \param msgnum number of the mesage in our db
 601  */
 602 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum, char* from, int unread) {
 603         char buf[SIZ];
 604         int delete_existing = 0;
 605         icalproperty *prop;
 606         icalcomponent *vtodo, *encaps;
 607         int created_new_vtodo = 0;
 608         int i;
 609         int sequence = 0;
 610         struct icaltimetype t;
 611
 612         if (supplied_vtodo != NULL) {
 613                 vtodo = supplied_vtodo;
 614                 /**
 615                  * If we're looking at a fully encapsulated VCALENDAR
 616                  * rather than a VTODO component, attempt to use the first
 617                  * relevant VTODO subcomponent.  If there is none, the
 618                  * NULL returned by icalcomponent_get_first_component() will
 619                  * tell the next iteration of this function to create a
 620                  * new one.
 621                  */
 622                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 623                         save_individual_task(
 624                                 icalcomponent_get_first_component(
 625                                         vtodo, ICAL_VTODO_COMPONENT),
 626                                 msgnum, from, unread
 627                         );
 628                         return;
 629                 }
 630         }
 631         else {
 632                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 633                 created_new_vtodo = 1;
 634         }
 635
 636         if (!IsEmptyStr(bstr("save_button"))) {
 637
 638                 /** Replace values in the component with ones from the form */
 639
 640                 while (prop = icalcomponent_get_first_property(vtodo,
 641                       ICAL_SUMMARY_PROPERTY), prop != NULL) {
 642                         icalcomponent_remove_property(vtodo, prop);
 643                         icalproperty_free(prop);
 644                 }
 645                 if (!IsEmptyStr(bstr("summary"))) {
 646
 647                         icalcomponent_add_property(vtodo,
 648                                         icalproperty_new_summary(bstr("summary")));
 649                 } else {
 650                         icalcomponent_add_property(vtodo,
 651                                         icalproperty_new_summary("Untitled Task"));
 652                 }
 653
 654                 while (prop = icalcomponent_get_first_property(vtodo,
 655                       ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 656                         icalcomponent_remove_property(vtodo, prop);
 657                         icalproperty_free(prop);
 658                 }
 659                 icalcomponent_add_property(vtodo,
 660                         icalproperty_new_description(bstr("description")));
 661
 662                 while (prop = icalcomponent_get_first_property(vtodo,
 663                       ICAL_DTSTART_PROPERTY), prop != NULL) {
 664                         icalcomponent_remove_property(vtodo, prop);
 665                         icalproperty_free(prop);
 666                 }
 667                 icaltime_from_webform(&t, "dtstart");
 668                 icalcomponent_add_property(vtodo,
 669                         icalproperty_new_dtstart(t)
 670                 );
 671
 672                 while (prop = icalcomponent_get_first_property(vtodo,
 673                       ICAL_DUE_PROPERTY), prop != NULL) {
 674                         icalcomponent_remove_property(vtodo, prop);
 675                         icalproperty_free(prop);
 676                 }
 677                 icaltime_from_webform(&t, "due");
 678                 icalcomponent_add_property(vtodo,
 679                         icalproperty_new_due(t)
 680                 );
 681
 682                 /** Give this task a UID if it doesn't have one. */
 683                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 684                 if (icalcomponent_get_first_property(vtodo,
 685                    ICAL_UID_PROPERTY) == NULL) {
 686                         generate_uuid(buf);
 687                         icalcomponent_add_property(vtodo,
 688                                 icalproperty_new_uid(buf)
 689                         );
 690                 }
 691
 692                 /** Increment the sequence ID */
 693                 lprintf(9, "Increment the sequence ID\n");
 694                 while (prop = icalcomponent_get_first_property(vtodo,
 695                       ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 696                         i = icalproperty_get_sequence(prop);
 697                         lprintf(9, "Sequence was %d\n", i);
 698                         if (i > sequence) sequence = i;
 699                         icalcomponent_remove_property(vtodo, prop);
 700                         icalproperty_free(prop);
 701                 }
 702                 ++sequence;
 703                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 704                 icalcomponent_add_property(vtodo,
 705                         icalproperty_new_sequence(sequence)
 706                 );
 707
 708                 /**
 709                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 710                  * for two reasons: one, it's easier to just free the whole thing
 711                  * when we're done instead of unbundling, but more importantly, we
 712                  * can't encapsulate something that may already be encapsulated
 713                  * somewhere else.
 714                  */
 715                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 716                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 717
 718                 /* Serialize it and save it to the message base */
 719                 serv_puts("ENT0 1|||4");
 720                 serv_getln(buf, sizeof buf);
 721                 if (buf[0] == '4') {
 722                         serv_puts("Content-type: text/calendar");
 723                         serv_puts("");
 724                         serv_puts(icalcomponent_as_ical_string(encaps));
 725                         serv_puts("000");
 726
 727                         /**
 728                          * Probably not necessary; the server will see the UID
 729                          * of the object and delete the old one anyway, but
 730                          * just in case...
 731                          */
 732                         delete_existing = 1;
 733                 }
 734                 icalcomponent_free(encaps);
 735         }
 736
 737         /**
 738          * If the user clicked 'Delete' then explicitly delete the message.
 739          */
 740         if (!IsEmptyStr(bstr("delete_button"))) {
 741                 delete_existing = 1;
 742         }
 743
 744         if ( (delete_existing) && (msgnum > 0L) ) {
 745                 serv_printf("DELE %ld", atol(bstr("msgnum")));
 746                 serv_getln(buf, sizeof buf);
 747         }
 748
 749         if (created_new_vtodo) {
 750                 icalcomponent_free(vtodo);
 751         }
 752
 753         /** Go back to the task list */
 754         readloop("readfwd");
 755 }
 756
 757
 758
 759 /**
 760  * \brief generic item handler
 761  * Code common to all display handlers.  Given a message number and a MIME
 762  * type, we load the message and hunt for that MIME type.  If found, we load
 763  * the relevant part, deserialize it into a libical component, filter it for
 764  * the requested object type, and feed it to the specified handler.
 765  * \param mimetype mimetyp of our object
 766  * \param which_kind sort of ical type
 767  * \param msgnum number of the mesage in our db
 768  * \param callback a funcion \todo
 769  *
 770  */
 771 void display_using_handler(long msgnum, int unread,
 772                            icalcomponent_kind which_kind,
 773                            void (*callback)(icalcomponent *, long, char*, int)
 774         ) {
 775         char buf[1024];
 776         char from[128] = "";
 777         char mime_partnum[256];
 778         char mime_filename[256];
 779         char mime_content_type[256];
 780         char mime_disposition[256];
 781         int mime_length;
 782         char relevant_partnum[256];
 783         char *relevant_source = NULL;
 784         icalcomponent *cal, *c;
 785
 786         relevant_partnum[0] = '\0';
 787         sprintf(buf, "MSG4 %ld", msgnum);       /* we need the mime headers */
 788         serv_puts(buf);
 789         serv_getln(buf, sizeof buf);
 790         if (buf[0] != '1') return;
 791
 792         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 793                 if (!strncasecmp(buf, "part=", 5)) {
 794                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 795                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 796                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 797                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 798                         mime_length = extract_int(&buf[5], 5);
 799
 800                         if (  (!strcasecmp(mime_content_type, "text/calendar"))
 801                            || (!strcasecmp(mime_content_type, "application/ics"))
 802                            || (!strcasecmp(mime_content_type, "text/vtodo"))
 803                         ) {
 804                                 strcpy(relevant_partnum, mime_partnum);
 805                         }
 806                 }
 807                 else if (!strncasecmp(buf, "from=", 4)) {
 808                         extract_token(from, buf, 1, '=', sizeof(from));
 809                 }
 810         }
 811
 812         if (!IsEmptyStr(relevant_partnum)) {
 813                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 814                 if (relevant_source != NULL) {
 815
 816                         cal = icalcomponent_new_from_string(relevant_source);
 817                         if (cal != NULL) {
 818
 819                                 ical_dezonify(cal);
 820
 821                                 /** Simple components of desired type */
 822                                 if (icalcomponent_isa(cal) == which_kind) {
 823                                         callback(cal, msgnum, from, unread);
 824                                 }
 825
 826                                 /** Subcomponents of desired type */
 827                                 for (c = icalcomponent_get_first_component(cal,
 828                                     which_kind);
 829                                     (c != 0);
 830                                     c = icalcomponent_get_next_component(cal,
 831                                     which_kind)) {
 832                                         callback(c, msgnum, from, unread);
 833                                 }
 834                                 icalcomponent_free(cal);
 835                         }
 836                         free(relevant_source);
 837                 }
 838         }
 839         icalmemory_free_ring();
 840 }
 841
 842 /**
 843  * \brief display whole calendar
 844  * \param msgnum number of the mesage in our db
 845  */
 846 void display_calendar(long msgnum, int unread) {
 847         display_using_handler(msgnum, unread,
 848                                 ICAL_VEVENT_COMPONENT,
 849                                 display_individual_cal);
 850 }
 851
 852 /**
 853  * \brief display whole taksview
 854  * \param msgnum number of the mesage in our db
 855  */
 856 void display_task(long msgnum, int unread) {
 857         display_using_handler(msgnum, unread,
 858                                 ICAL_VTODO_COMPONENT,
 859                                 display_individual_cal);
 860 }
 861
 862 /**
 863  * \brief display the editor component for a task
 864  */
 865 void display_edit_task(void) {
 866         long msgnum = 0L;
 867
 868         /** Force change the room if we have to */
 869         if (!IsEmptyStr(bstr("taskrm"))) {
 870                 gotoroom(bstr("taskrm"));
 871         }
 872
 873         msgnum = atol(bstr("msgnum"));
 874         if (msgnum > 0L) {
 875                 /** existing task */
 876                 display_using_handler(msgnum, 0,
 877                                 ICAL_VTODO_COMPONENT,
 878                                 display_edit_individual_task);
 879         }
 880         else {
 881                 /** new task */
 882                 display_edit_individual_task(NULL, 0L, "", 0);
 883         }
 884 }
 885
 886 /**
 887  *\brief save an edited task
 888  */
 889 void save_task(void) {
 890         long msgnum = 0L;
 891
 892         msgnum = atol(bstr("msgnum"));
 893         if (msgnum > 0L) {
 894                 display_using_handler(msgnum, 0,
 895                                 ICAL_VTODO_COMPONENT,
 896                                 save_individual_task);
 897         }
 898         else {
 899                 save_individual_task(NULL, 0L, "", 0);
 900         }
 901 }
 902
 903 /**
 904  * \brief display the editor component for an event
 905  */
 906 void display_edit_event(void) {
 907         long msgnum = 0L;
 908
 909         msgnum = atol(bstr("msgnum"));
 910         if (msgnum > 0L) {
 911                 /* existing event */
 912                 display_using_handler(msgnum, 0,
 913                                 ICAL_VEVENT_COMPONENT,
 914                                 display_edit_individual_event);
 915         }
 916         else {
 917                 /* new event */
 918                 display_edit_individual_event(NULL, 0L, "", 0);
 919         }
 920 }
 921
 922 /**
 923  * \brief save an edited event
 924  */
 925 void save_event(void) {
 926         long msgnum = 0L;
 927
 928         msgnum = atol(bstr("msgnum"));
 929
 930         if (msgnum > 0L) {
 931                 display_using_handler(msgnum, 0,
 932                                 ICAL_VEVENT_COMPONENT,
 933                                 save_individual_event);
 934         }
 935         else {
 936                 save_individual_event(NULL, 0L, "", 0);
 937         }
 938 }
 939
 940
 941
 942
 943
 944 /**
 945  * \brief freebusy display (for client software)
 946  * \param req dunno. ?????
 947  */
 948 void do_freebusy(char *req) {
 949         char who[SIZ];
 950         char buf[SIZ];
 951         char *fb;
 952         int len;
 953
 954         extract_token(who, req, 1, ' ', sizeof who);
 955         if (!strncasecmp(who, "/freebusy/", 10)) {
 956                 strcpy(who, &who[10]);
 957         }
 958         unescape_input(who);
 959
 960         len = strlen(who);
 961         if ( (!strcasecmp(&who[len-4], ".vcf"))
 962            || (!strcasecmp(&who[len-4], ".ifb"))
 963            || (!strcasecmp(&who[len-4], ".vfb")) ) {
 964                 who[len-4] = 0;
 965         }
 966
 967         lprintf(9, "freebusy requested for <%s>\n", who);
 968         serv_printf("ICAL freebusy|%s", who);
 969         serv_getln(buf, sizeof buf);
 970
 971         if (buf[0] != '1') {
 972                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
 973                 output_headers(0, 0, 0, 0, 0, 0);
 974                 wprintf("Content-Type: text/plain\r\n");
 975                 wprintf("\r\n");
 976                 wprintf("%s\n", &buf[4]);
 977                 return;
 978         }
 979
 980         fb = read_server_text();
 981         http_transmit_thing(fb, strlen(fb), "text/calendar", 0);
 982         free(fb);
 983 }
 984
 985
 986
 987 #endif /* WEBCIT_WITH_CALENDAR_SERVICE */
 988