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 teh 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
  89         /** Leading HTML for the display of this object */
  90         if (recursion_level == 0) {
  91                 wprintf("<CENTER><TABLE border=0>\n");
  92         }
  93
  94         /** Look for a method */
  95         method = icalcomponent_get_first_property(cal, ICAL_METHOD_PROPERTY);
  96
  97         /** See what we need to do with this */
  98         if (method != NULL) {
  99                 the_method = icalproperty_get_method(method);
 100                 switch(the_method) {
 101                     case ICAL_METHOD_REQUEST:
 102                         wprintf("<tr><td colspan=\"2\">\n"
 103                                 "<img align=\"center\" "
 104                                 "src=\"static/calarea_48x.gif\">"
 105                                 "&nbsp;&nbsp;"
 106                                 "<B>");
 107                         wprintf(_("Meeting invitation"));
 108                         wprintf("</B></TD></TR>\n");
 109                         break;
 110                     case ICAL_METHOD_REPLY:
 111                         wprintf("<TR><TD COLSPAN=2>\n"
 112                                 "<IMG ALIGN=CENTER "
 113                                 "src=\"static/calarea_48x.gif\">"
 114                                 "&nbsp;&nbsp;"
 115                                 "<B>");
 116                         wprintf(_("Attendee's reply to your invitation"));
 117                         wprintf("</B></TD></TR>\n");
 118                         break;
 119                     case ICAL_METHOD_PUBLISH:
 120                         wprintf("<TR><TD COLSPAN=2>\n"
 121                                 "<IMG ALIGN=CENTER "
 122                                 "src=\"static/calarea_48x.gif\">"
 123                                 "&nbsp;&nbsp;"
 124                                 "<B>");
 125                         wprintf(_("Published event"));
 126                         wprintf("</B></TD></TR>\n");
 127                         break;
 128                     default:
 129                         wprintf("<TR><TD COLSPAN=2>");
 130                         wprintf(_("This is an unknown type of calendar item."));
 131                         wprintf("</TD></TR>\n");
 132                         break;
 133                 }
 134         }
 135
 136         p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
 137         if (p != NULL) {
 138                 wprintf("<TR><TD><B>");
 139                 wprintf(_("Summary:"));
 140                 wprintf("</B></TD><TD>");
 141                 escputs((char *)icalproperty_get_comment(p));
 142                 wprintf("</TD></TR>\n");
 143         }
 144
 145         p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
 146         if (p != NULL) {
 147                 wprintf("<TR><TD><B>");
 148                 wprintf(_("Location:"));
 149                 wprintf("</B></TD><TD>");
 150                 escputs((char *)icalproperty_get_comment(p));
 151                 wprintf("</TD></TR>\n");
 152         }
 153
 154         /**
 155          * Only show start/end times if we're actually looking at the VEVENT
 156          * component.  Otherwise it shows bogus dates for things like timezone.
 157          */
 158         if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
 159
 160                 p = icalcomponent_get_first_property(cal,
 161                                                 ICAL_DTSTART_PROPERTY);
 162                 if (p != NULL) {
 163                         t = icalproperty_get_dtstart(p);
 164
 165                         if (t.is_date) {
 166                                 struct tm d_tm;
 167                                 char d_str[32];
 168                                 memset(&d_tm, 0, sizeof d_tm);
 169                                 d_tm.tm_year = t.year - 1900;
 170                                 d_tm.tm_mon = t.month - 1;
 171                                 d_tm.tm_mday = t.day;
 172                                 wc_strftime(d_str, sizeof d_str, "%x", &d_tm);
 173                                 wprintf("<TR><TD><B>");
 174                                 wprintf(_("Date:"));
 175                                 wprintf("</B></TD><TD>%s</TD></TR>", d_str);
 176                         }
 177                         else {
 178                                 tt = icaltime_as_timet(t);
 179                                 fmt_date(buf, tt, 0);
 180                                 wprintf("<TR><TD><B>");
 181                                 wprintf(_("Starting date/time:"));
 182                                 wprintf("</B></TD><TD>%s</TD></TR>", buf);
 183                         }
 184                 }
 185
 186                 p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
 187                 if (p != NULL) {
 188                         t = icalproperty_get_dtend(p);
 189                         tt = icaltime_as_timet(t);
 190                         fmt_date(buf, tt, 0);
 191                         wprintf("<TR><TD><B>");
 192                         wprintf(_("Ending date/time:"));
 193                         wprintf("</B></TD><TD>%s</TD></TR>", buf);
 194                 }
 195
 196         }
 197
 198         p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
 199         if (p != NULL) {
 200                 wprintf("<TR><TD><B>");
 201                 wprintf(_("Description:"));
 202                 wprintf("</B></TD><TD>");
 203                 escputs((char *)icalproperty_get_comment(p));
 204                 wprintf("</TD></TR>\n");
 205         }
 206
 207         /** If the component has attendees, iterate through them. */
 208         for (p = icalcomponent_get_first_property(cal, ICAL_ATTENDEE_PROPERTY); (p != NULL); p = icalcomponent_get_next_property(cal, ICAL_ATTENDEE_PROPERTY)) {
 209                 wprintf("<TR><TD><B>");
 210                 wprintf(_("Attendee:"));
 211                 wprintf("</B></TD><TD>");
 212                 safestrncpy(buf, icalproperty_get_attendee(p), sizeof buf);
 213                 if (!strncasecmp(buf, "MAILTO:", 7)) {
 214
 215                         /** screen name or email address */
 216                         strcpy(buf, &buf[7]);
 217                         striplt(buf);
 218                         escputs(buf);
 219                         wprintf(" ");
 220
 221                         /** participant status */
 222                         partstat_as_string(buf, p);
 223                         escputs(buf);
 224                 }
 225                 wprintf("</TD></TR>\n");
 226         }
 227
 228         /** If the component has subcomponents, recurse through them. */
 229         for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
 230             (c != 0);
 231             c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
 232                 /* Recursively process subcomponent */
 233                 cal_process_object(c, recursion_level+1, msgnum, cal_partnum);
 234         }
 235
 236         /** If this is a REQUEST, display conflicts and buttons */
 237         if (the_method == ICAL_METHOD_REQUEST) {
 238
 239                 /* Check for conflicts */
 240                 lprintf(9, "Checking server calendar for conflicts...\n");
 241                 serv_printf("ICAL conflicts|%ld|%s|", msgnum, cal_partnum);
 242                 serv_getln(buf, sizeof buf);
 243                 if (buf[0] == '1') {
 244                         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 245                                 extract_token(conflict_name, buf, 3, '|', sizeof conflict_name);
 246                                 is_update = extract_int(buf, 4);
 247
 248                                 if (is_update) {
 249                                         snprintf(conflict_message, sizeof conflict_message,
 250                                                 _("This is an update of '%s' which is already in your calendar."), conflict_name);
 251                                 }
 252                                 else {
 253                                         snprintf(conflict_message, sizeof conflict_message,
 254                                                 _("This event would conflict with '%s' which is already in your calendar."), conflict_name);
 255                                 }
 256
 257                                 wprintf("<TR><TD><B><I>%s</I></B></TD><td>",
 258                                         (is_update ?
 259                                                 _("Update:") :
 260                                                 _("CONFLICT:")
 261                                         )
 262                                 );
 263                                 escputs(conflict_message);
 264                                 wprintf("</TD></TR>\n");
 265                         }
 266                 }
 267                 lprintf(9, "...done.\n");
 268
 269                 /** Display the Accept/Decline buttons */
 270                 wprintf("<tr><td>%s</td>"
 271                         "<td><font size=+1>"
 272                         "<a href=\"respond_to_request?msgnum=%ld&cal_partnum=%s&sc=Accept\">%s</a>"
 273                         " | "
 274                         "<a href=\"respond_to_request?msgnum=%ld&cal_partnum=%s&sc=Tentative\">%s</a>"
 275                         " | "
 276                         "<a href=\"respond_to_request?msgnum=%ld&cal_partnum=%s&sc=Decline\">%s</a>"
 277                         "</FONT></TD></TR>\n",
 278                         _("How would you like to respond to this invitation?"),
 279                         msgnum, cal_partnum, _("Accept"),
 280                         msgnum, cal_partnum, _("Tentative"),
 281                         msgnum, cal_partnum, _("Decline")
 282                 );
 283
 284         }
 285
 286         /** If this is a REPLY, display update button */
 287         if (the_method == ICAL_METHOD_REPLY) {
 288
 289                 /** \todo  In the future, if we want to validate this object before \
 290                  * continuing, we can do it this way:
 291                 serv_printf("ICAL whatever|%ld|%s|", msgnum, cal_partnum);
 292                 serv_getln(buf, sizeof buf);
 293                 }
 294                  ***********/
 295
 296                 /** Display the update buttons */
 297                 wprintf("<TR><TD>"
 298                         "%s"
 299                         "</td><td><font size=+1>"
 300                         "<a href=\"handle_rsvp?msgnum=%ld&cal_partnum=%s&sc=Update\">%s</a>"
 301                         " | "
 302                         "<a href=\"handle_rsvp?msgnum=%ld&cal_partnum=%s&sc=Ignore\">%s</a>"
 303                         "</font>"
 304                         "</TD></TR>\n",
 305                         _("Click <i>Update</i> to accept this reply and update your calendar."),
 306                         msgnum, cal_partnum, _("Update"),
 307                         msgnum, cal_partnum, _("Ignore")
 308                 );
 309
 310         }
 311
 312         /** Trailing HTML for the display of this object */
 313         if (recursion_level == 0) {
 314
 315                 wprintf("</TR></TABLE></CENTER>\n");
 316         }
 317 }
 318
 319
 320 /**
 321  * \brief process calendar mail atachment
 322  * Deserialize a calendar object in a message so it can be processed.
 323  * (This is the main entry point for these things)
 324  * \param part_source the part of the message we want to parse
 325  * \param msgnum number of the mesage in our db
 326  * \param cal_partnum the number of the calendar item
 327  */
 328 void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum) {
 329         icalcomponent *cal;
 330
 331         cal = icalcomponent_new_from_string(part_source);
 332
 333         if (cal == NULL) {
 334                 wprintf(_("There was an error parsing this calendar item."));
 335                 wprintf("<br />\n");
 336                 return;
 337         }
 338
 339         ical_dezonify(cal);
 340         cal_process_object(cal, 0, msgnum, cal_partnum);
 341
 342         /* Free the memory we obtained from libical's constructor */
 343         icalcomponent_free(cal);
 344 }
 345
 346
 347
 348
 349 /**
 350  * \brief accept/decline meeting
 351  * Respond to a meeting request
 352  */
 353 void respond_to_request(void) {
 354         char buf[SIZ];
 355
 356         output_headers(1, 1, 2, 0, 0, 0);
 357
 358         wprintf("<div id=\"banner\">\n");
 359         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR><TD>"
 360                 "<SPAN CLASS=\"titlebar\">");
 361         wprintf(_("Respond to meeting request"));
 362         wprintf("</SPAN>"
 363                 "</TD></TR></TABLE>\n"
 364         );
 365         wprintf("</div>\n<div id=\"content\">\n");
 366
 367         serv_printf("ICAL respond|%s|%s|%s|",
 368                 bstr("msgnum"),
 369                 bstr("cal_partnum"),
 370                 bstr("sc")
 371         );
 372         serv_getln(buf, sizeof buf);
 373
 374         if (buf[0] == '2') {
 375                 wprintf("<TABLE BORDER=0><TR><TD>"
 376                         "<img src=\"static/calarea_48x.gif\" ALIGN=CENTER>"
 377                         "</TD><TD>"
 378                 );
 379                 if (!strcasecmp(bstr("sc"), "accept")) {
 380                         wprintf(_("You have accepted this meeting invitation.  "
 381                                 "It has been entered into your calendar.")
 382                         );
 383                 } else if (!strcasecmp(bstr("sc"), "tentative")) {
 384                         wprintf(_("You have tentatively accepted this meeting invitation.  "
 385                                 "It has been 'pencilled in' to your calendar.")
 386                         );
 387                 } else if (!strcasecmp(bstr("sc"), "decline")) {
 388                         wprintf(_("You have declined this meeting invitation.  "
 389                                 "It has <b>not</b> been entered into your calendar.")
 390                         );
 391                 }
 392                 wprintf(" ");
 393                 wprintf(_("A reply has been sent to the meeting organizer."));
 394                 wprintf("</TD></TR></TABLE>\n");
 395         } else {
 396                 wprintf("<img src=\"static/error.gif\" ALIGN=CENTER>"
 397                         "%s\n", &buf[4]);
 398         }
 399
 400         wprintf("<a href=\"dotskip?room=");
 401         urlescputs(WC->wc_roomname);
 402         wprintf("\"><br />");
 403         wprintf(_("Return to messages"));
 404         wprintf("</A><br />\n");
 405
 406         wDumpContent(1);
 407 }
 408
 409
 410
 411 /**
 412  * \brief Handle an incoming RSVP
 413  */
 414 void handle_rsvp(void) {
 415         char buf[SIZ];
 416
 417         output_headers(1, 1, 2, 0, 0, 0);
 418
 419         wprintf("<div id=\"banner\">\n");
 420         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR><TD>"
 421                 "<SPAN CLASS=\"titlebar\">");
 422         wprintf(_("Update your calendar with this RSVP"));
 423         wprintf("</SPAN>"
 424                 "</TD></TR></TABLE>\n"
 425                 "</div>\n<div id=\"content\">\n"
 426         );
 427
 428         serv_printf("ICAL handle_rsvp|%s|%s|%s|",
 429                 bstr("msgnum"),
 430                 bstr("cal_partnum"),
 431                 bstr("sc")
 432         );
 433         serv_getln(buf, sizeof buf);
 434
 435         if (buf[0] == '2') {
 436                 wprintf("<TABLE BORDER=0><TR><TD>"
 437                         "<img src=\"static/calarea_48x.gif\" ALIGN=CENTER>"
 438                         "</TD><TD>"
 439                 );
 440                 if (!strcasecmp(bstr("sc"), "update")) {
 441                         wprintf(_("Your calendar has been updated to reflect this RSVP."));
 442                 } else if (!strcasecmp(bstr("sc"), "ignore")) {
 443                         wprintf(_("You have chosen to ignore this RSVP. "
 444                                 "Your calendar has <b>not</b> been updated.")
 445                         );
 446                 }
 447                 wprintf("</TD></TR></TABLE>\n"
 448                 );
 449         } else {
 450                 wprintf("<img src=\"static/error.gif\" ALIGN=CENTER>"
 451                         "%s\n", &buf[4]);
 452         }
 453
 454         wprintf("<a href=\"dotskip?room=");
 455         urlescputs(WC->wc_roomname);
 456         wprintf("\"><br />");
 457         wprintf(_("Return to messages"));
 458         wprintf("</A><br />\n");
 459
 460         wDumpContent(1);
 461 }
 462
 463
 464
 465 /*@}*/
 466 /*-----------------------------------------------------------------------**/
 467
 468
 469
 470 /**
 471  * \defgroup MsgDisplayHandlers Display handlers for message reading
 472  * \ingroup Calendaring
 473  */
 474
 475 /*@{*/
 476
 477
 478
 479 /**
 480  * \brief get items, keep them.
 481  * If we're reading calendar items, just store them for now.  We have to
 482  * sort and re-output them later when we draw the calendar.
 483  * \param cal Our calendar to process
 484  * \param msgnum number of the mesage in our db
 485  */
 486 void display_individual_cal(icalcomponent *cal, long msgnum) {
 487
 488         WC->num_cal += 1;
 489
 490         WC->disp_cal = realloc(WC->disp_cal,
 491                         (sizeof(struct disp_cal) * WC->num_cal) );
 492         WC->disp_cal[WC->num_cal - 1].cal = icalcomponent_new_clone(cal);
 493
 494         WC->disp_cal[WC->num_cal - 1].cal_msgnum = msgnum;
 495 }
 496
 497
 498
 499 /*
 500  * \brief edit a task
 501  * Display a task by itself (for editing)
 502  * \param supplied_vtodo the todo item we want to edit
 503  * \param msgnum number of the mesage in our db
 504  */
 505 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 506         icalcomponent *vtodo;
 507         icalproperty *p;
 508         struct icaltimetype t;
 509         time_t now;
 510         int created_new_vtodo = 0;
 511
 512         now = time(NULL);
 513
 514         if (supplied_vtodo != NULL) {
 515                 vtodo = supplied_vtodo;
 516
 517                 /**
 518                  * If we're looking at a fully encapsulated VCALENDAR
 519                  * rather than a VTODO component, attempt to use the first
 520                  * relevant VTODO subcomponent.  If there is none, the
 521                  * NULL returned by icalcomponent_get_first_component() will
 522                  * tell the next iteration of this function to create a
 523                  * new one.
 524                  */
 525                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 526                         display_edit_individual_task(
 527                                 icalcomponent_get_first_component(
 528                                         vtodo, ICAL_VTODO_COMPONENT
 529                                 ), msgnum
 530                         );
 531                         return;
 532                 }
 533         }
 534         else {
 535                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 536                 created_new_vtodo = 1;
 537         }
 538
 539         output_headers(1, 1, 2, 0, 0, 0);
 540         wprintf("<div id=\"banner\">\n"
 541                 "<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR>"
 542                 "<TD><img src=\"static/taskmanag_48x.gif\"></TD>"
 543                 "<td><SPAN CLASS=\"titlebar\">");
 544         wprintf(_("Edit task"));
 545         wprintf("</SPAN>"
 546                 "</TD></TR></TABLE>\n"
 547                 "</div>\n<div id=\"content\">\n"
 548         );
 549
 550         wprintf("<div class=\"fix_scrollbar_bug\">"
 551                 "<table border=0 width=100%% bgcolor=\"#ffffff\"><tr><td>");
 552
 553         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 554         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 555                 msgnum);
 556
 557         wprintf("<TABLE border=0>\n");
 558
 559         wprintf("<TR><TD>");
 560         wprintf(_("Summary:"));
 561         wprintf("</TD><TD>"
 562                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 563                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 564         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 565         if (p != NULL) {
 566                 escputs((char *)icalproperty_get_comment(p));
 567         }
 568         wprintf("\"></TD></TR>\n");
 569
 570         wprintf("<TR><TD>");
 571         wprintf(_("Start date:"));
 572         wprintf("</TD><TD>");
 573         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 574         if (p != NULL) {
 575                 t = icalproperty_get_dtstart(p);
 576         }
 577         else {
 578                 t = icaltime_from_timet(now, 0);
 579         }
 580         display_icaltimetype_as_webform(&t, "dtstart");
 581         wprintf("</TD></TR>\n");
 582
 583         wprintf("<TR><TD>");
 584         wprintf(_("Due date:"));
 585         wprintf("</TD><TD>");
 586         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 587         if (p != NULL) {
 588                 t = icalproperty_get_due(p);
 589         }
 590         else {
 591                 t = icaltime_from_timet(now, 0);
 592         }
 593         display_icaltimetype_as_webform(&t, "due");
 594         wprintf("</TD></TR>\n");
 595         wprintf("<TR><TD>");
 596         wprintf(_("Description:"));
 597         wprintf("</TD><TD>");
 598         wprintf("<TEXTAREA NAME=\"description\" wrap=soft "
 599                 "ROWS=10 COLS=80 WIDTH=80>\n"
 600         );
 601         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 602         if (p != NULL) {
 603                 escputs((char *)icalproperty_get_comment(p));
 604         }
 605         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 606
 607         wprintf("<CENTER>"
 608                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 609                 "&nbsp;&nbsp;"
 610                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 611                 "&nbsp;&nbsp;"
 612                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 613                 "</CENTER>\n",
 614                 _("Save"),
 615                 _("Delete"),
 616                 _("Cancel")
 617         );
 618
 619         wprintf("</FORM>\n");
 620
 621         wprintf("</td></tr></table></div>\n");
 622         wDumpContent(1);
 623
 624         if (created_new_vtodo) {
 625                 icalcomponent_free(vtodo);
 626         }
 627 }
 628
 629 /*
 630  * \brief Save an edited task
 631  * \param supplied_vtodo the task to save
 632  * \param msgnum number of the mesage in our db
 633  */
 634 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 635         char buf[SIZ];
 636         int delete_existing = 0;
 637         icalproperty *prop;
 638         icalcomponent *vtodo, *encaps;
 639         int created_new_vtodo = 0;
 640         int i;
 641         int sequence = 0;
 642         struct icaltimetype t;
 643
 644         if (supplied_vtodo != NULL) {
 645                 vtodo = supplied_vtodo;
 646                 /**
 647                  * If we're looking at a fully encapsulated VCALENDAR
 648                  * rather than a VTODO component, attempt to use the first
 649                  * relevant VTODO subcomponent.  If there is none, the
 650                  * NULL returned by icalcomponent_get_first_component() will
 651                  * tell the next iteration of this function to create a
 652                  * new one.
 653                  */
 654                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 655                         save_individual_task(
 656                                 icalcomponent_get_first_component(
 657                                         vtodo, ICAL_VTODO_COMPONENT
 658                                 ), msgnum
 659                         );
 660                         return;
 661                 }
 662         }
 663         else {
 664                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 665                 created_new_vtodo = 1;
 666         }
 667
 668         if (strlen(bstr("save_button")) > 0) {
 669
 670                 /** Replace values in the component with ones from the form */
 671
 672                 while (prop = icalcomponent_get_first_property(vtodo,
 673                       ICAL_SUMMARY_PROPERTY), prop != NULL) {
 674                         icalcomponent_remove_property(vtodo, prop);
 675                         icalproperty_free(prop);
 676                 }
 677                 icalcomponent_add_property(vtodo,
 678                         icalproperty_new_summary(bstr("summary")));
 679
 680                 while (prop = icalcomponent_get_first_property(vtodo,
 681                       ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 682                         icalcomponent_remove_property(vtodo, prop);
 683                         icalproperty_free(prop);
 684                 }
 685                 icalcomponent_add_property(vtodo,
 686                         icalproperty_new_description(bstr("description")));
 687
 688                 while (prop = icalcomponent_get_first_property(vtodo,
 689                       ICAL_DTSTART_PROPERTY), prop != NULL) {
 690                         icalcomponent_remove_property(vtodo, prop);
 691                         icalproperty_free(prop);
 692                 }
 693                 icaltime_from_webform(&t, "dtstart");
 694                 icalcomponent_add_property(vtodo,
 695                         icalproperty_new_dtstart(t)
 696                 );
 697
 698                 while (prop = icalcomponent_get_first_property(vtodo,
 699                       ICAL_DUE_PROPERTY), prop != NULL) {
 700                         icalcomponent_remove_property(vtodo, prop);
 701                         icalproperty_free(prop);
 702                 }
 703                 icaltime_from_webform(&t, "due");
 704                 icalcomponent_add_property(vtodo,
 705                         icalproperty_new_due(t)
 706                 );
 707
 708                 /** Give this task a UID if it doesn't have one. */
 709                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 710                 if (icalcomponent_get_first_property(vtodo,
 711                    ICAL_UID_PROPERTY) == NULL) {
 712                         generate_uuid(buf);
 713                         icalcomponent_add_property(vtodo,
 714                                 icalproperty_new_uid(buf)
 715                         );
 716                 }
 717
 718                 /** Increment the sequence ID */
 719                 lprintf(9, "Increment the sequence ID\n");
 720                 while (prop = icalcomponent_get_first_property(vtodo,
 721                       ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 722                         i = icalproperty_get_sequence(prop);
 723                         lprintf(9, "Sequence was %d\n", i);
 724                         if (i > sequence) sequence = i;
 725                         icalcomponent_remove_property(vtodo, prop);
 726                         icalproperty_free(prop);
 727                 }
 728                 ++sequence;
 729                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 730                 icalcomponent_add_property(vtodo,
 731                         icalproperty_new_sequence(sequence)
 732                 );
 733
 734                 /**
 735                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 736                  * for two reasons: one, it's easier to just free the whole thing
 737                  * when we're done instead of unbundling, but more importantly, we
 738                  * can't encapsulate something that may already be encapsulated
 739                  * somewhere else.
 740                  */
 741                 lprintf(9, "Encapsulating into full VCALENDAR component\n");
 742                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 743
 744                 /* Serialize it and save it to the message base */
 745                 serv_puts("ENT0 1|||4");
 746                 serv_getln(buf, sizeof buf);
 747                 if (buf[0] == '4') {
 748                         serv_puts("Content-type: text/calendar");
 749                         serv_puts("");
 750                         serv_puts(icalcomponent_as_ical_string(encaps));
 751                         serv_puts("000");
 752
 753                         /**
 754                          * Probably not necessary; the server will see the UID
 755                          * of the object and delete the old one anyway, but
 756                          * just in case...
 757                          */
 758                         delete_existing = 1;
 759                 }
 760                 icalcomponent_free(encaps);
 761         }
 762
 763         /**
 764          * If the user clicked 'Delete' then explicitly delete the message.
 765          */
 766         if (strlen(bstr("delete_button")) > 0) {
 767                 delete_existing = 1;
 768         }
 769
 770         if ( (delete_existing) && (msgnum > 0L) ) {
 771                 serv_printf("DELE %ld", atol(bstr("msgnum")));
 772                 serv_getln(buf, sizeof buf);
 773         }
 774
 775         if (created_new_vtodo) {
 776                 icalcomponent_free(vtodo);
 777         }
 778
 779         /** Go back to the task list */
 780         readloop("readfwd");
 781 }
 782
 783
 784
 785 /**
 786  * \brief generic item handler
 787  * Code common to all display handlers.  Given a message number and a MIME
 788  * type, we load the message and hunt for that MIME type.  If found, we load
 789  * the relevant part, deserialize it into a libical component, filter it for
 790  * the requested object type, and feed it to the specified handler.
 791  * \param mimetype mimetyp of our object
 792  * \param which_kind sort of ical type
 793  * \param msgnum number of the mesage in our db
 794  * \param callback a funcion \todo
 795  *
 796  */
 797 void display_using_handler(long msgnum,
 798                         char *mimetype,
 799                         icalcomponent_kind which_kind,
 800                         void (*callback)(icalcomponent *, long)
 801         ) {
 802         char buf[SIZ];
 803         char mime_partnum[SIZ];
 804         char mime_filename[SIZ];
 805         char mime_content_type[SIZ];
 806         char mime_disposition[SIZ];
 807         int mime_length;
 808         char relevant_partnum[SIZ];
 809         char *relevant_source = NULL;
 810         icalcomponent *cal, *c;
 811
 812         sprintf(buf, "MSG0 %ld|1", msgnum);     /* ask for headers only */
 813         serv_puts(buf);
 814         serv_getln(buf, sizeof buf);
 815         if (buf[0] != '1') return;
 816
 817         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 818                 if (!strncasecmp(buf, "part=", 5)) {
 819                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 820                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 821                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 822                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 823                         mime_length = extract_int(&buf[5], 5);
 824
 825                         if (!strcasecmp(mime_content_type, "text/calendar")) {
 826                                 strcpy(relevant_partnum, mime_partnum);
 827                         }
 828
 829                 }
 830         }
 831
 832         if (strlen(relevant_partnum) > 0) {
 833                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 834                 if (relevant_source != NULL) {
 835
 836                         cal = icalcomponent_new_from_string(relevant_source);
 837                         if (cal != NULL) {
 838
 839                                 ical_dezonify(cal);
 840
 841                                 /** Simple components of desired type */
 842                                 if (icalcomponent_isa(cal) == which_kind) {
 843                                         callback(cal, msgnum);
 844                                 }
 845
 846                                 /** Subcomponents of desired type */
 847                                 for (c = icalcomponent_get_first_component(cal,
 848                                     which_kind);
 849                                     (c != 0);
 850                                     c = icalcomponent_get_next_component(cal,
 851                                     which_kind)) {
 852                                         callback(c, msgnum);
 853                                 }
 854                                 icalcomponent_free(cal);
 855                         }
 856                         free(relevant_source);
 857                 }
 858         }
 859
 860 }
 861
 862 /**
 863  * \brief display whole calendar
 864  * \param msgnum number of the mesage in our db
 865  */
 866 void display_calendar(long msgnum) {
 867         display_using_handler(msgnum, "text/calendar",
 868                                 ICAL_VEVENT_COMPONENT,
 869                                 display_individual_cal);
 870 }
 871
 872 /**
 873  * \brief display whole taksview
 874  * \param msgnum number of the mesage in our db
 875  */
 876 void display_task(long msgnum) {
 877         display_using_handler(msgnum, "text/calendar",
 878                                 ICAL_VTODO_COMPONENT,
 879                                 display_individual_cal);
 880 }
 881
 882 /**
 883  * \brief display the editor component for a task
 884  */
 885 void display_edit_task(void) {
 886         long msgnum = 0L;
 887
 888         /** Force change the room if we have to */
 889         if (strlen(bstr("taskrm")) > 0) {
 890                 gotoroom(bstr("taskrm"));
 891         }
 892
 893         msgnum = atol(bstr("msgnum"));
 894         if (msgnum > 0L) {
 895                 /** existing task */
 896                 display_using_handler(msgnum, "text/calendar",
 897                                 ICAL_VTODO_COMPONENT,
 898                                 display_edit_individual_task);
 899         }
 900         else {
 901                 /** new task */
 902                 display_edit_individual_task(NULL, 0L);
 903         }
 904 }
 905
 906 /**
 907  *\brief save an edited task
 908  */
 909 void save_task(void) {
 910         long msgnum = 0L;
 911
 912         msgnum = atol(bstr("msgnum"));
 913         if (msgnum > 0L) {
 914                 display_using_handler(msgnum, "text/calendar",
 915                                 ICAL_VTODO_COMPONENT,
 916                                 save_individual_task);
 917         }
 918         else {
 919                 save_individual_task(NULL, 0L);
 920         }
 921 }
 922
 923 /**
 924  * \brief display the editor component for an event
 925  */
 926 void display_edit_event(void) {
 927         long msgnum = 0L;
 928
 929         msgnum = atol(bstr("msgnum"));
 930         if (msgnum > 0L) {
 931                 /* existing event */
 932                 display_using_handler(msgnum, "text/calendar",
 933                                 ICAL_VEVENT_COMPONENT,
 934                                 display_edit_individual_event);
 935         }
 936         else {
 937                 /* new event */
 938                 display_edit_individual_event(NULL, 0L);
 939         }
 940 }
 941
 942 /**
 943  * \brief save an edited event
 944  */
 945 void save_event(void) {
 946         long msgnum = 0L;
 947
 948         msgnum = atol(bstr("msgnum"));
 949
 950         if (msgnum > 0L) {
 951                 display_using_handler(msgnum, "text/calendar",
 952                                 ICAL_VEVENT_COMPONENT,
 953                                 save_individual_event);
 954         }
 955         else {
 956                 save_individual_event(NULL, 0L);
 957         }
 958 }
 959
 960
 961
 962
 963
 964 /**
 965  * \brief freebusy display (for client software)
 966  * \param req dunno. ?????
 967  */
 968 void do_freebusy(char *req) {
 969         char who[SIZ];
 970         char buf[SIZ];
 971         char *fb;
 972
 973         extract_token(who, req, 1, ' ', sizeof who);
 974         if (!strncasecmp(who, "/freebusy/", 10)) {
 975                 strcpy(who, &who[10]);
 976         }
 977         unescape_input(who);
 978
 979         if ( (!strcasecmp(&who[strlen(who)-4], ".vcf"))
 980            || (!strcasecmp(&who[strlen(who)-4], ".ifb"))
 981            || (!strcasecmp(&who[strlen(who)-4], ".vfb")) ) {
 982                 who[strlen(who)-4] = 0;
 983         }
 984
 985         lprintf(9, "freebusy requested for <%s>\n", who);
 986         serv_printf("ICAL freebusy|%s", who);
 987         serv_getln(buf, sizeof buf);
 988
 989         if (buf[0] != '1') {
 990                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
 991                 output_headers(0, 0, 0, 0, 0, 0);
 992                 wprintf("Content-Type: text/plain\r\n");
 993                 wprintf("\r\n");
 994                 wprintf("%s\n", &buf[4]);
 995                 return;
 996         }
 997
 998         fb = read_server_text();
 999         http_transmit_thing(fb, strlen(fb), "text/calendar", 0);
1000         free(fb);
1001 }
1002
1003
1004
1005 #endif /* WEBCIT_WITH_CALENDAR_SERVICE */
1006
1007
1008 /*@}*/