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)
 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         ical_dezonify(WCC->disp_cal[WCC->num_cal - 1].cal);
 457         WCC->disp_cal[WCC->num_cal - 1].cal_msgnum = msgnum;
 458 }
 459
 460
 461
 462 /*
 463  * \brief edit a task
 464  * Display a task by itself (for editing)
 465  * \param supplied_vtodo the todo item we want to edit
 466  * \param msgnum number of the mesage in our db
 467  */
 468 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 469         icalcomponent *vtodo;
 470         icalproperty *p;
 471         struct icaltimetype t;
 472         time_t now;
 473         int created_new_vtodo = 0;
 474
 475         now = time(NULL);
 476
 477         if (supplied_vtodo != NULL) {
 478                 vtodo = supplied_vtodo;
 479
 480                 /**
 481                  * If we're looking at a fully encapsulated VCALENDAR
 482                  * rather than a VTODO component, attempt to use the first
 483                  * relevant VTODO subcomponent.  If there is none, the
 484                  * NULL returned by icalcomponent_get_first_component() will
 485                  * tell the next iteration of this function to create a
 486                  * new one.
 487                  */
 488                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 489                         display_edit_individual_task(
 490                                 icalcomponent_get_first_component(
 491                                         vtodo, ICAL_VTODO_COMPONENT
 492                                 ), msgnum
 493                         );
 494                         return;
 495                 }
 496         }
 497         else {
 498                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 499                 created_new_vtodo = 1;
 500         }
 501
 502         output_headers(1, 1, 2, 0, 0, 0);
 503         wprintf("<div id=\"banner\">\n");
 504         wprintf("<img src=\"static/taskmanag_48x.gif\">");
 505         wprintf("<h1>");
 506         wprintf(_("Edit task"));
 507         wprintf("</h1>");
 508         wprintf("</div>\n");
 509
 510         wprintf("<div id=\"content\" class=\"service\">\n");
 511
 512         wprintf("<div class=\"fix_scrollbar_bug\">"
 513                 "<table class=\"calendar_background\"><tr><td>");
 514
 515         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 516         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%ld\">\n", WC->nonce);
 517         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 518                 msgnum);
 519
 520         wprintf("<TABLE border=0>\n");
 521
 522         wprintf("<TR><TD>");
 523         wprintf(_("Summary:"));
 524         wprintf("</TD><TD>"
 525                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 526                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 527         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 528         if (p != NULL) {
 529                 escputs((char *)icalproperty_get_comment(p));
 530         }
 531         wprintf("\"></TD></TR>\n");
 532
 533         wprintf("<TR><TD>");
 534         wprintf(_("Start date:"));
 535         wprintf("</TD><TD>");
 536         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 537         if (p != NULL) {
 538                 t = icalproperty_get_dtstart(p);
 539         }
 540         else {
 541                 t = icaltime_from_timet(now, 0);
 542         }
 543         display_icaltimetype_as_webform(&t, "dtstart");
 544         wprintf("</TD></TR>\n");
 545
 546         wprintf("<TR><TD>");
 547         wprintf(_("Due date:"));
 548         wprintf("</TD><TD>");
 549         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 550         if (p != NULL) {
 551                 t = icalproperty_get_due(p);
 552         }
 553         else {
 554                 t = icaltime_from_timet(now, 0);
 555         }
 556         display_icaltimetype_as_webform(&t, "due");
 557         wprintf("</TD></TR>\n");
 558         wprintf("<TR><TD>");
 559         wprintf(_("Description:"));
 560         wprintf("</TD><TD>");
 561         wprintf("<TEXTAREA NAME=\"description\" wrap=soft "
 562                 "ROWS=10 COLS=80 WIDTH=80>\n"
 563         );
 564         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 565         if (p != NULL) {
 566                 escputs((char *)icalproperty_get_comment(p));
 567         }
 568         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 569
 570         wprintf("<CENTER>"
 571                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 572                 "&nbsp;&nbsp;"
 573                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 574                 "&nbsp;&nbsp;"
 575                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 576                 "</CENTER>\n",
 577                 _("Save"),
 578                 _("Delete"),
 579                 _("Cancel")
 580         );
 581
 582         wprintf("</FORM>\n");
 583
 584         wprintf("</td></tr></table></div>\n");
 585         wDumpContent(1);
 586
 587         if (created_new_vtodo) {
 588                 icalcomponent_free(vtodo);
 589         }
 590 }
 591
 592 /*
 593  * \brief Save an edited task
 594  * \param supplied_vtodo the task to save
 595  * \param msgnum number of the mesage in our db
 596  */
 597 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 598         char buf[SIZ];
 599         int delete_existing = 0;
 600         icalproperty *prop;
 601         icalcomponent *vtodo, *encaps;
 602         int created_new_vtodo = 0;
 603         int i;
 604         int sequence = 0;
 605         struct icaltimetype t;
 606
 607         if (supplied_vtodo != NULL) {
 608                 vtodo = supplied_vtodo;
 609                 /**
 610                  * If we're looking at a fully encapsulated VCALENDAR
 611                  * rather than a VTODO component, attempt to use the first
 612                  * relevant VTODO subcomponent.  If there is none, the
 613                  * NULL returned by icalcomponent_get_first_component() will
 614                  * tell the next iteration of this function to create a
 615                  * new one.
 616                  */
 617                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 618                         save_individual_task(
 619                                 icalcomponent_get_first_component(
 620                                         vtodo, ICAL_VTODO_COMPONENT
 621                                 ), msgnum
 622                         );
 623                         return;
 624                 }
 625         }
 626         else {
 627                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 628                 created_new_vtodo = 1;
 629         }
 630
 631         if (!IsEmptyStr(bstr("save_button"))) {
 632
 633                 /** Replace values in the component with ones from the form */
 634
 635                 while (prop = icalcomponent_get_first_property(vtodo,
 636                       ICAL_SUMMARY_PROPERTY), prop != NULL) {
 637                         icalcomponent_remove_property(vtodo, prop);
 638                         icalproperty_free(prop);
 639                 }
 640                 if (!IsEmptyStr(bstr("summary"))) {
 641
 642                         icalcomponent_add_property(vtodo,
 643                                         icalproperty_new_summary(bstr("summary")));
 644                 } else {
 645                         icalcomponent_add_property(vtodo,
 646                                         icalproperty_new_summary("Untitled Task"));
 647                 }
 648
 649                 while (prop = icalcomponent_get_first_property(vtodo,
 650                       ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 651                         icalcomponent_remove_property(vtodo, prop);
 652                         icalproperty_free(prop);
 653                 }
 654                 icalcomponent_add_property(vtodo,
 655                         icalproperty_new_description(bstr("description")));
 656
 657                 while (prop = icalcomponent_get_first_property(vtodo,
 658                       ICAL_DTSTART_PROPERTY), prop != NULL) {
 659                         icalcomponent_remove_property(vtodo, prop);
 660                         icalproperty_free(prop);
 661                 }
 662                 icaltime_from_webform(&t, "dtstart");
 663                 icalcomponent_add_property(vtodo,
 664                         icalproperty_new_dtstart(t)
 665                 );
 666
 667                 while (prop = icalcomponent_get_first_property(vtodo,
 668                       ICAL_DUE_PROPERTY), prop != NULL) {
 669                         icalcomponent_remove_property(vtodo, prop);
 670                         icalproperty_free(prop);
 671                 }
 672                 icaltime_from_webform(&t, "due");
 673                 icalcomponent_add_property(vtodo,
 674                         icalproperty_new_due(t)
 675                 );
 676
 677                 /** Give this task a UID if it doesn't have one. */
 678                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 679                 if (icalcomponent_get_first_property(vtodo,
 680                    ICAL_UID_PROPERTY) == NULL) {
 681                         generate_uuid(buf);
 682                         icalcomponent_add_property(vtodo,
 683                                 icalproperty_new_uid(buf)
 684                         );
 685                 }
 686
 687                 /** Increment the sequence ID */
 688                 lprintf(9, "Increment the sequence ID\n");
 689                 while (prop = icalcomponent_get_first_property(vtodo,
 690                       ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 691                         i = icalproperty_get_sequence(prop);
 692                         lprintf(9, "Sequence was %d\n", i);
 693                         if (i > sequence) sequence = i;
 694                         icalcomponent_remove_property(vtodo, prop);
 695                         icalproperty_free(prop);
 696                 }
 697                 ++sequence;
 698                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 699                 icalcomponent_add_property(vtodo,
 700                         icalproperty_new_sequence(sequence)
 701                 );
 702
 703                 /**
 704                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 705                  * for two reasons: one, it's easier to just free the whole thing
 706                  * when we're done instead of unbundling, but more importantly, we
 707                  * can't encapsulate something that may already be encapsulated
 708                  * somewhere else.
 709                  */
 710                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 711                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 712
 713                 /* Serialize it and save it to the message base */
 714                 serv_puts("ENT0 1|||4");
 715                 serv_getln(buf, sizeof buf);
 716                 if (buf[0] == '4') {
 717                         serv_puts("Content-type: text/calendar");
 718                         serv_puts("");
 719                         serv_puts(icalcomponent_as_ical_string(encaps));
 720                         serv_puts("000");
 721
 722                         /**
 723                          * Probably not necessary; the server will see the UID
 724                          * of the object and delete the old one anyway, but
 725                          * just in case...
 726                          */
 727                         delete_existing = 1;
 728                 }
 729                 icalcomponent_free(encaps);
 730         }
 731
 732         /**
 733          * If the user clicked 'Delete' then explicitly delete the message.
 734          */
 735         if (!IsEmptyStr(bstr("delete_button"))) {
 736                 delete_existing = 1;
 737         }
 738
 739         if ( (delete_existing) && (msgnum > 0L) ) {
 740                 serv_printf("DELE %ld", atol(bstr("msgnum")));
 741                 serv_getln(buf, sizeof buf);
 742         }
 743
 744         if (created_new_vtodo) {
 745                 icalcomponent_free(vtodo);
 746         }
 747
 748         /** Go back to the task list */
 749         readloop("readfwd");
 750 }
 751
 752
 753
 754 /**
 755  * \brief generic item handler
 756  * Code common to all display handlers.  Given a message number and a MIME
 757  * type, we load the message and hunt for that MIME type.  If found, we load
 758  * the relevant part, deserialize it into a libical component, filter it for
 759  * the requested object type, and feed it to the specified handler.
 760  * \param mimetype mimetyp of our object
 761  * \param which_kind sort of ical type
 762  * \param msgnum number of the mesage in our db
 763  * \param callback a funcion \todo
 764  *
 765  */
 766 void display_using_handler(long msgnum,
 767                         char *mimetype,
 768                         icalcomponent_kind which_kind,
 769                         void (*callback)(icalcomponent *, long)
 770         ) {
 771         char buf[1024];
 772         char mime_partnum[256];
 773         char mime_filename[256];
 774         char mime_content_type[256];
 775         char mime_disposition[256];
 776         int mime_length;
 777         char relevant_partnum[256];
 778         char *relevant_source = NULL;
 779         icalcomponent *cal, *c;
 780
 781         relevant_partnum[0] = '\0';
 782         sprintf(buf, "MSG4 %ld", msgnum);       /* we need the mime headers */
 783         serv_puts(buf);
 784         serv_getln(buf, sizeof buf);
 785         if (buf[0] != '1') return;
 786
 787         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 788                 if (!strncasecmp(buf, "part=", 5)) {
 789                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 790                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 791                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 792                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 793                         mime_length = extract_int(&buf[5], 5);
 794
 795                         if (!strcasecmp(mime_content_type, "text/calendar")) {
 796                                 strcpy(relevant_partnum, mime_partnum);
 797                         }
 798                         else if (!strcasecmp(mime_content_type, "text/vtodo")) {
 799                                 strcpy(relevant_partnum, mime_partnum);
 800                         }
 801
 802                 }
 803         }
 804
 805         if (!IsEmptyStr(relevant_partnum)) {
 806                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 807                 if (relevant_source != NULL) {
 808
 809                         cal = icalcomponent_new_from_string(relevant_source);
 810                         if (cal != NULL) {
 811
 812                                 ical_dezonify(cal);
 813
 814                                 /** Simple components of desired type */
 815                                 if (icalcomponent_isa(cal) == which_kind) {
 816                                         callback(cal, msgnum);
 817                                 }
 818
 819                                 /** Subcomponents of desired type */
 820                                 for (c = icalcomponent_get_first_component(cal,
 821                                     which_kind);
 822                                     (c != 0);
 823                                     c = icalcomponent_get_next_component(cal,
 824                                     which_kind)) {
 825                                         callback(c, msgnum);
 826                                 }
 827                                 icalcomponent_free(cal);
 828                         }
 829                         free(relevant_source);
 830                 }
 831         }
 832
 833 }
 834
 835 /**
 836  * \brief display whole calendar
 837  * \param msgnum number of the mesage in our db
 838  */
 839 void display_calendar(long msgnum) {
 840         display_using_handler(msgnum, "text/calendar",
 841                                 ICAL_VEVENT_COMPONENT,
 842                                 display_individual_cal);
 843 }
 844
 845 /**
 846  * \brief display whole taksview
 847  * \param msgnum number of the mesage in our db
 848  */
 849 void display_task(long msgnum) {
 850         display_using_handler(msgnum, "text/calendar",
 851                                 ICAL_VTODO_COMPONENT,
 852                                 display_individual_cal);
 853 }
 854
 855 /**
 856  * \brief display the editor component for a task
 857  */
 858 void display_edit_task(void) {
 859         long msgnum = 0L;
 860
 861         /** Force change the room if we have to */
 862         if (!IsEmptyStr(bstr("taskrm"))) {
 863                 gotoroom(bstr("taskrm"));
 864         }
 865
 866         msgnum = atol(bstr("msgnum"));
 867         if (msgnum > 0L) {
 868                 /** existing task */
 869                 display_using_handler(msgnum, "text/calendar",
 870                                 ICAL_VTODO_COMPONENT,
 871                                 display_edit_individual_task);
 872         }
 873         else {
 874                 /** new task */
 875                 display_edit_individual_task(NULL, 0L);
 876         }
 877 }
 878
 879 /**
 880  *\brief save an edited task
 881  */
 882 void save_task(void) {
 883         long msgnum = 0L;
 884
 885         msgnum = atol(bstr("msgnum"));
 886         if (msgnum > 0L) {
 887                 display_using_handler(msgnum, "text/calendar",
 888                                 ICAL_VTODO_COMPONENT,
 889                                 save_individual_task);
 890         }
 891         else {
 892                 save_individual_task(NULL, 0L);
 893         }
 894 }
 895
 896 /**
 897  * \brief display the editor component for an event
 898  */
 899 void display_edit_event(void) {
 900         long msgnum = 0L;
 901
 902         msgnum = atol(bstr("msgnum"));
 903         if (msgnum > 0L) {
 904                 /* existing event */
 905                 display_using_handler(msgnum, "text/calendar",
 906                                 ICAL_VEVENT_COMPONENT,
 907                                 display_edit_individual_event);
 908         }
 909         else {
 910                 /* new event */
 911                 display_edit_individual_event(NULL, 0L);
 912         }
 913 }
 914
 915 /**
 916  * \brief save an edited event
 917  */
 918 void save_event(void) {
 919         long msgnum = 0L;
 920
 921         msgnum = atol(bstr("msgnum"));
 922
 923         if (msgnum > 0L) {
 924                 display_using_handler(msgnum, "text/calendar",
 925                                 ICAL_VEVENT_COMPONENT,
 926                                 save_individual_event);
 927         }
 928         else {
 929                 save_individual_event(NULL, 0L);
 930         }
 931 }
 932
 933
 934
 935
 936
 937 /**
 938  * \brief freebusy display (for client software)
 939  * \param req dunno. ?????
 940  */
 941 void do_freebusy(char *req) {
 942         char who[SIZ];
 943         char buf[SIZ];
 944         char *fb;
 945         int len;
 946
 947         extract_token(who, req, 1, ' ', sizeof who);
 948         if (!strncasecmp(who, "/freebusy/", 10)) {
 949                 strcpy(who, &who[10]);
 950         }
 951         unescape_input(who);
 952
 953         len = strlen(who);
 954         if ( (!strcasecmp(&who[len-4], ".vcf"))
 955            || (!strcasecmp(&who[len-4], ".ifb"))
 956            || (!strcasecmp(&who[len-4], ".vfb")) ) {
 957                 who[len-4] = 0;
 958         }
 959
 960         lprintf(9, "freebusy requested for <%s>\n", who);
 961         serv_printf("ICAL freebusy|%s", who);
 962         serv_getln(buf, sizeof buf);
 963
 964         if (buf[0] != '1') {
 965                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
 966                 output_headers(0, 0, 0, 0, 0, 0);
 967                 wprintf("Content-Type: text/plain\r\n");
 968                 wprintf("\r\n");
 969                 wprintf("%s\n", &buf[4]);
 970                 return;
 971         }
 972
 973         fb = read_server_text();
 974         http_transmit_thing(fb, strlen(fb), "text/calendar", 0);
 975         free(fb);
 976 }
 977
 978
 979
 980 #endif /* WEBCIT_WITH_CALENDAR_SERVICE */
 981
 982
 983 /*@}*/