webcit/calendar.c

   1 /*
   2  * $Id$
   3  *
   4  * Functions which handle calendar objects and their processing/display.
   5  *
   6  */
   7
   8 #include <ctype.h>
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13 #include <signal.h>
  14 #include <sys/types.h>
  15 #include <sys/wait.h>
  16 #include <sys/socket.h>
  17 #include <limits.h>
  18 #include <netinet/in.h>
  19 #include <netdb.h>
  20 #include <string.h>
  21 #include <pwd.h>
  22 #include <errno.h>
  23 #include <stdarg.h>
  24 #include <pthread.h>
  25 #include <signal.h>
  26 #include <time.h>
  27 #include "webcit.h"
  28 #include "webserver.h"
  29
  30 #ifndef HAVE_ICAL_H
  31
  32 /*
  33  * Handler stubs for builds with no calendar library available
  34  */
  35 void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum) {
  36
  37         wprintf("<I>This message contains calendaring/scheduling information,"
  38                 " but support for calendars is not available on this "
  39                 "particular system.  Please ask your system administrator to "
  40                 "install a new version of the Citadel web service with "
  41                 "calendaring enabled.</I><BR>\n"
  42         );
  43
  44 }
  45
  46 void display_calendar(long msgnum) {
  47         wprintf("<i>"
  48                 "Cannot display calendar item.  You are seeing this error "
  49                 "because your WebCit service has not been installed with "
  50                 "calendar support.  Please contact your system administrator."
  51                 "</i><br>\n");
  52 }
  53
  54 void display_task(long msgnum) {
  55         wprintf("<i>"
  56                 "Cannot display to-do item.  You are seeing this error "
  57                 "because your WebCit service has not been installed with "
  58                 "calendar support.  Please contact your system administrator."
  59                 "</i><br>\n");
  60 }
  61
  62 #else /* HAVE_ICAL_H */
  63
  64
  65 /******   End of handler stubs.  Everything below this line is real.   ******/
  66
  67
  68
  69
  70 /*
  71  * Process a calendar object
  72  * ...at this point it's already been deserialized by cal_process_attachment()
  73  */
  74 void cal_process_object(icalcomponent *cal,
  75                         int recursion_level,
  76                         long msgnum,
  77                         char *cal_partnum
  78 ) {
  79         icalcomponent *c;
  80         icalproperty *method = NULL;
  81         icalproperty_method the_method;
  82         icalproperty *p;
  83         struct icaltimetype t;
  84         time_t tt;
  85         char buf[SIZ];
  86
  87         /* Leading HTML for the display of this object */
  88         if (recursion_level == 0) {
  89                 wprintf("<CENTER><TABLE border=0 cellpadding=5>\n");
  90         }
  91
  92         /* Look for a method */
  93         method = icalcomponent_get_first_property(cal, ICAL_METHOD_PROPERTY);
  94
  95         /* See what we need to do with this */
  96         if (method != NULL) {
  97                 the_method = icalproperty_get_method(method);
  98                 switch(the_method) {
  99                     case ICAL_METHOD_REQUEST:
 100                         wprintf("<TR><TD COLSPAN=2>\n"
 101                                 "<IMG ALIGN=CENTER "
 102                                 "SRC=\"/static/vcalendar.gif\">"
 103                                 "&nbsp;&nbsp;"
 104                                 "<B>Meeting invitation</B>
 105                                 </TD></TR>\n"
 106                         );
 107                         break;
 108                     default:
 109                         wprintf("<TR><TD COLSPAN=2>"
 110                                 "I don't know what to do with this.</TD></TR>"
 111                                 "\n");
 112                         break;
 113                 }
 114         }
 115
 116         p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
 117         if (p != NULL) {
 118                 wprintf("<TR><TD><B>Summary:</B></TD><TD>");
 119                 escputs((char *)icalproperty_get_comment(p));
 120                 wprintf("</TD></TR>\n");
 121         }
 122
 123         p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
 124         if (p != NULL) {
 125                 wprintf("<TR><TD><B>Location:</B></TD><TD>");
 126                 escputs((char *)icalproperty_get_comment(p));
 127                 wprintf("</TD></TR>\n");
 128         }
 129
 130         /*
 131          * Only show start/end times if we're actually looking at the VEVENT
 132          * component.  Otherwise it shows bogus dates for things like timezone.
 133          */
 134         if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
 135
 136                 p = icalcomponent_get_first_property(cal,
 137                                                 ICAL_DTSTART_PROPERTY);
 138                 if (p != NULL) {
 139                         t = icalproperty_get_dtstart(p);
 140                         tt = icaltime_as_timet(t);
 141                         fmt_date(buf, tt);
 142                         wprintf("<TR><TD><B>Starting date/time:</B></TD><TD>"
 143                                 "%s</TD></TR>", buf
 144                         );
 145                 }
 146
 147                 p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
 148                 if (p != NULL) {
 149                         t = icalproperty_get_dtend(p);
 150                         tt = icaltime_as_timet(t);
 151                         fmt_date(buf, tt);
 152                         wprintf("<TR><TD><B>Ending date/time:</B></TD><TD>"
 153                                 "%s</TD></TR>", buf
 154                         );
 155                 }
 156
 157         }
 158
 159         p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
 160         if (p != NULL) {
 161                 wprintf("<TR><TD><B>Description:</B></TD><TD>");
 162                 escputs((char *)icalproperty_get_comment(p));
 163                 wprintf("</TD></TR>\n");
 164         }
 165
 166         /* If the component has subcomponents, recurse through them. */
 167         for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
 168             (c != 0);
 169             c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
 170                 /* Recursively process subcomponent */
 171                 cal_process_object(c, recursion_level+1, msgnum, cal_partnum);
 172         }
 173
 174         /* Trailing HTML for the display of this object */
 175         if (recursion_level == 0) {
 176                 wprintf("<TR><TD COLSPAN=2>"
 177                         "<FORM METHOD=\"GET\" "
 178                         "ACTION=\"/respond_to_request\">\n"
 179                         "<INPUT TYPE=\"submit\" NAME=\"sc\" "
 180                                 "VALUE=\"Accept\">\n"
 181                         "&nbsp;&nbsp;"
 182                         "<INPUT TYPE=\"submit\" NAME=\"sc\" "
 183                                 "VALUE=\"Tentative\">\n"
 184                         "&nbsp;&nbsp;"
 185                         "<INPUT TYPE=\"submit\" NAME=\"sc\" "
 186                                 "VALUE=\"Decline\">\n"
 187                         "<INPUT TYPE=\"hidden\" NAME=\"msgnum\" "
 188                                 "VALUE=\"%ld\">"
 189                         "<INPUT TYPE=\"hidden\" NAME=\"cal_partnum\" "
 190                                 "VALUE=\"%s\">"
 191                         "</FORM>"
 192                         "</TD></TR></TABLE></CENTER>\n",
 193                         msgnum, cal_partnum
 194                 );
 195         }
 196 }
 197
 198
 199 /*
 200  * Back end for cal_add() -- this writes it to the message base
 201  */
 202 void pencil_it_in(icalcomponent *cal) {
 203         char hold_rm[SIZ];
 204         char buf[SIZ];
 205         char *serialized_event;
 206
 207         /* Save the name of the room we're in */
 208         strcpy(hold_rm, WC->wc_roomname);
 209
 210         /* Go find the user's calendar */
 211         serv_printf("GOTO %s", CALENDAR_ROOM_NAME);
 212         serv_gets(buf);
 213         if (buf[0] != '2') return;
 214
 215         /* Enter the message */
 216         serialized_event = icalcomponent_as_ical_string(cal);
 217         if (serialized_event != NULL) {
 218                 sprintf(buf, "ENT0 1|||4||");
 219                 serv_puts(buf);
 220                 serv_gets(buf);
 221                 if (buf[0] == '4') {
 222                         serv_puts("Content-type: text/calendar");
 223                         serv_puts("");
 224                         serv_write(serialized_event, strlen(serialized_event));
 225                         serv_puts("");
 226                         serv_puts("000");
 227                 }
 228         }
 229
 230         /* Return to the room we were in */
 231         serv_printf("GOTO %s", hold_rm);
 232         serv_gets(buf);
 233 }
 234
 235
 236 /*
 237  * Add a calendar object to the user's calendar
 238  */
 239 void cal_add(icalcomponent *cal, int recursion_level, int tentative) {
 240         icalcomponent *c;
 241
 242         /*
 243          * The VEVENT subcomponent is the one we're interested in saving.
 244          */
 245         if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
 246                 /* Save to the message base */
 247                 pencil_it_in(cal);
 248
 249         }
 250
 251         /* If the component has subcomponents, recurse through them. */
 252         for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
 253             (c != 0);
 254             c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
 255                 /* Recursively process subcomponent */
 256                 cal_add(c, recursion_level+1, tentative);
 257         }
 258
 259 }
 260
 261
 262 /*
 263  * Deserialize a calendar object in a message so it can be processed.
 264  * (This is the main entry point for these things)
 265  */
 266 void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum) {
 267         icalcomponent *cal;
 268
 269         cal = icalcomponent_new_from_string(part_source);
 270
 271         if (cal == NULL) {
 272                 wprintf("Error parsing calendar object: %s<BR>\n",
 273                         icalerror_strerror(icalerrno));
 274                 return;
 275         }
 276
 277         cal_process_object(cal, 0, msgnum, cal_partnum);
 278
 279         /* Free the memory we obtained from libical's constructor */
 280         icalcomponent_free(cal);
 281 }
 282
 283
 284
 285
 286 /*
 287  * Respond to a meeting request
 288  */
 289 void respond_to_request(void) {
 290         char buf[SIZ];
 291         size_t total_len;
 292         char *serialized_cal;
 293         icalcomponent *cal;
 294
 295         output_headers(3);
 296
 297         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=007700><TR><TD>"
 298                 "<FONT SIZE=+1 COLOR=\"FFFFFF\""
 299                 "<B>Respond to meeting request</B>"
 300                 "</FONT></TD></TR></TABLE><BR>\n"
 301         );
 302
 303         sprintf(buf, "OPNA %s|%s", bstr("msgnum"), bstr("cal_partnum"));
 304         serv_puts(buf);
 305         serv_gets(buf);
 306         if (buf[0] != '2') {
 307                 wprintf("Error: %s<BR>\n", &buf[4]);
 308                 wDumpContent(1);
 309                 return;
 310         }
 311
 312         total_len = atoi(&buf[4]);
 313         serialized_cal = malloc(total_len + 1);
 314
 315         read_server_binary(serialized_cal, total_len);
 316
 317         serv_puts("CLOS");
 318         serv_gets(buf);
 319         serialized_cal[total_len + 1] = 0;
 320
 321         /* Deserialize it */
 322         cal = icalcomponent_new_from_string(serialized_cal);
 323         free(serialized_cal);
 324
 325         if (cal == NULL) {
 326                 wprintf("Error parsing calendar object: %s<BR>\n",
 327                         icalerror_strerror(icalerrno));
 328                 wDumpContent(1);
 329                 return;
 330         }
 331
 332         /* Save this in the user's calendar if necessary */
 333         if (!strcasecmp(bstr("sc"), "Accept")) {
 334                 cal_add(cal, 0, 0);
 335         }
 336         if (!strcasecmp(bstr("sc"), "Tentative")) {
 337                 cal_add(cal, 0, 1);
 338         }
 339
 340         /* Send a reply if necessary */
 341         /* FIXME ... do this */
 342
 343         /* Free the memory we obtained from libical's constructor */
 344         icalcomponent_free(cal);
 345
 346         /* Delete the message from the inbox */
 347         /* FIXME ... do this */
 348
 349
 350         wprintf("Done!<BR>\n");
 351
 352         /* ...and now we're done. */
 353         wDumpContent(1);
 354 }
 355
 356
 357
 358
 359 /*****************************************************************************/
 360
 361
 362
 363 /*
 364  * Display handlers for message reading
 365  */
 366
 367
 368
 369 /*
 370  * If we're reading calendar items, just store them for now.  We have to
 371  * sort and re-output them later when we draw the calendar.
 372  */
 373 void display_individual_cal(icalcomponent *cal, long msgnum) {
 374
 375         WC->num_cal += 1;
 376
 377         WC->disp_cal = realloc(WC->disp_cal,
 378                         (sizeof(icalcomponent *) * WC->num_cal) );
 379         WC->disp_cal[WC->num_cal - 1] = icalcomponent_new_clone(cal);
 380
 381         WC->cal_msgnum = realloc(WC->cal_msgnum,
 382                         (sizeof(long) * WC->num_cal) );
 383         WC->cal_msgnum[WC->num_cal - 1] = msgnum;
 384 }
 385
 386
 387
 388 /*
 389  * Display a task in the task list
 390  */
 391 void display_individual_task(icalcomponent *vtodo, long msgnum) {
 392         icalproperty *p;
 393
 394         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 395         wprintf("<LI><A HREF=\"/display_edit_task?msgnum=%ld\">", msgnum);
 396         if (p != NULL) {
 397                 escputs((char *)icalproperty_get_comment(p));
 398         }
 399         wprintf("</A>\n");
 400 }
 401
 402
 403 /*
 404  * Display a task by itself (for editing)
 405  */
 406 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 407         icalcomponent *vtodo;
 408         icalproperty *p;
 409         struct icaltimetype t;
 410         time_t now;
 411         int created_new_vtodo = 0;
 412
 413         now = time(NULL);
 414
 415         if (supplied_vtodo != NULL) {
 416                 vtodo = supplied_vtodo;
 417         }
 418         else {
 419                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 420                 created_new_vtodo = 1;
 421         }
 422
 423         output_headers(3);
 424         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=007700><TR><TD>"
 425                 "<FONT SIZE=+1 COLOR=\"FFFFFF\""
 426                 "<B>Edit task</B>"
 427                 "</FONT></TD></TR></TABLE><BR>\n"
 428         );
 429
 430         wprintf("<FORM METHOD=\"POST\" ACTION=\"/save_task\">\n");
 431         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 432                 msgnum);
 433
 434         wprintf("Summary: "
 435                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 436                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 437         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 438         if (p != NULL) {
 439                 escputs((char *)icalproperty_get_comment(p));
 440         }
 441         wprintf("\"><BR>\n");
 442
 443         wprintf("Start date: ");
 444         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 445         if (p != NULL) {
 446                 t = icalproperty_get_dtstart(p);
 447         }
 448         else {
 449                 t = icaltime_from_timet(now, 0);
 450         }
 451         display_icaltimetype_as_webform(&t, "dtstart");
 452         wprintf("<BR>\n");
 453
 454         wprintf("Due date: ");
 455         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 456         if (p != NULL) {
 457                 t = icalproperty_get_due(p);
 458         }
 459         else {
 460                 t = icaltime_from_timet(now, 0);
 461         }
 462         display_icaltimetype_as_webform(&t, "due");
 463         wprintf("<BR>\n");
 464
 465         wprintf("<CENTER><TEXTAREA NAME=\"description\" wrap=soft "
 466                 "ROWS=10 COLS=80 WIDTH=80>\n"
 467         );
 468         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 469         if (p != NULL) {
 470                 escputs((char *)icalproperty_get_comment(p));
 471         }
 472         wprintf("</TEXTAREA><BR>\n");
 473
 474         wprintf("<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Save\">"
 475                 "&nbsp;&nbsp;"
 476                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Delete\">\n"
 477                 "&nbsp;&nbsp;"
 478                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Cancel\">\n"
 479                 "</CENTER>\n"
 480         );
 481
 482         wprintf("</FORM>\n");
 483
 484         wDumpContent(1);
 485
 486         if (created_new_vtodo) {
 487                 icalcomponent_free(vtodo);
 488         }
 489 }
 490
 491 /*
 492  * Save an edited task
 493  */
 494 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 495         char buf[SIZ];
 496         int delete_existing = 0;
 497         icalproperty *prop;
 498         icalcomponent *vtodo;
 499         int created_new_vtodo = 0;
 500
 501         if (supplied_vtodo != NULL) {
 502                 vtodo = supplied_vtodo;
 503         }
 504         else {
 505                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 506                 created_new_vtodo = 1;
 507         }
 508
 509         if (!strcasecmp(bstr("sc"), "Save")) {
 510
 511                 /* Replace values in the component with ones from the form */
 512
 513                 while (prop = icalcomponent_get_first_property(vtodo,
 514                       ICAL_SUMMARY_PROPERTY), prop != NULL) {
 515                         icalcomponent_remove_property(vtodo, prop);
 516                 }
 517                 icalcomponent_add_property(vtodo,
 518                         icalproperty_new_summary(bstr("summary")));
 519
 520                 while (prop = icalcomponent_get_first_property(vtodo,
 521                       ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 522                         icalcomponent_remove_property(vtodo, prop);
 523                 }
 524                 icalcomponent_add_property(vtodo,
 525                         icalproperty_new_description(bstr("description")));
 526
 527                 while (prop = icalcomponent_get_first_property(vtodo,
 528                       ICAL_DTSTART_PROPERTY), prop != NULL) {
 529                         icalcomponent_remove_property(vtodo, prop);
 530                 }
 531                 icalcomponent_add_property(vtodo,
 532                         icalproperty_new_dtstart(
 533                                 icaltime_from_webform("dtstart")
 534                         )
 535                 );
 536
 537                 while (prop = icalcomponent_get_first_property(vtodo,
 538                       ICAL_DUE_PROPERTY), prop != NULL) {
 539                         icalcomponent_remove_property(vtodo, prop);
 540                 }
 541                 icalcomponent_add_property(vtodo,
 542                         icalproperty_new_due(
 543                                 icaltime_from_webform("due")
 544                         )
 545                 );
 546
 547                 /* Serialize it and save it to the message base */
 548                 serv_puts("ENT0 1|||4");
 549                 serv_gets(buf);
 550                 if (buf[0] == '4') {
 551                         serv_puts("Content-type: text/calendar");
 552                         serv_puts("");
 553                         serv_puts(icalcomponent_as_ical_string(vtodo));
 554                         serv_puts("000");
 555                         delete_existing = 1;
 556                 }
 557         }
 558
 559         /*
 560          * If the user clicked 'Delete' then delete it, period.
 561          */
 562         if (!strcasecmp(bstr("sc"), "Delete")) {
 563                 delete_existing = 1;
 564         }
 565
 566         if ( (delete_existing) && (msgnum > 0L) ) {
 567                 serv_printf("DELE %ld", atol(bstr("msgnum")));
 568                 serv_gets(buf);
 569         }
 570
 571         if (created_new_vtodo) {
 572                 icalcomponent_free(vtodo);
 573         }
 574
 575         /* Go back to the task list */
 576         readloop("readfwd");
 577 }
 578
 579
 580
 581 /*
 582  * Code common to all display handlers.  Given a message number and a MIME
 583  * type, we load the message and hunt for that MIME type.  If found, we load
 584  * the relevant part, deserialize it into a libical component, filter it for
 585  * the requested object type, and feed it to the specified handler.
 586  */
 587 void display_using_handler(long msgnum,
 588                         char *mimetype,
 589                         icalcomponent_kind which_kind,
 590                         void (*callback)(icalcomponent *, long)
 591         ) {
 592         char buf[SIZ];
 593         char mime_partnum[SIZ];
 594         char mime_filename[SIZ];
 595         char mime_content_type[SIZ];
 596         char mime_disposition[SIZ];
 597         int mime_length;
 598         char relevant_partnum[SIZ];
 599         char *relevant_source = NULL;
 600         icalcomponent *cal, *c;
 601
 602         sprintf(buf, "MSG0 %ld|1", msgnum);     /* ask for headers only */
 603         serv_puts(buf);
 604         serv_gets(buf);
 605         if (buf[0] != '1') return;
 606
 607         while (serv_gets(buf), strcmp(buf, "000")) {
 608                 if (!strncasecmp(buf, "part=", 5)) {
 609                         extract(mime_filename, &buf[5], 1);
 610                         extract(mime_partnum, &buf[5], 2);
 611                         extract(mime_disposition, &buf[5], 3);
 612                         extract(mime_content_type, &buf[5], 4);
 613                         mime_length = extract_int(&buf[5], 5);
 614
 615                         if (!strcasecmp(mime_content_type, "text/calendar")) {
 616                                 strcpy(relevant_partnum, mime_partnum);
 617                         }
 618
 619                 }
 620         }
 621
 622         if (strlen(relevant_partnum) > 0) {
 623                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 624                 if (relevant_source != NULL) {
 625
 626                         cal = icalcomponent_new_from_string(relevant_source);
 627                         if (cal != NULL) {
 628
 629                                 /* Simple components of desired type */
 630                                 if (icalcomponent_isa(cal) == which_kind) {
 631                                         callback(cal, msgnum);
 632                                 }
 633
 634                                 /* Subcomponents of desired type */
 635                                 for (c = icalcomponent_get_first_component(cal,
 636                                     which_kind);
 637                                     (c != 0);
 638                                     c = icalcomponent_get_next_component(cal,
 639                                     which_kind)) {
 640                                         callback(c, msgnum);
 641                                 }
 642                                 icalcomponent_free(cal);
 643                         }
 644                         free(relevant_source);
 645                 }
 646         }
 647
 648 }
 649
 650 void display_calendar(long msgnum) {
 651         display_using_handler(msgnum, "text/calendar",
 652                                 ICAL_VEVENT_COMPONENT,
 653                                 display_individual_cal);
 654 }
 655
 656 void display_task(long msgnum) {
 657         display_using_handler(msgnum, "text/calendar",
 658                                 ICAL_VTODO_COMPONENT,
 659                                 display_individual_task);
 660 }
 661
 662 void display_edit_task(void) {
 663         long msgnum = 0L;
 664
 665         msgnum = atol(bstr("msgnum"));
 666         if (msgnum > 0L) {
 667                 /* existing task */
 668                 display_using_handler(msgnum, "text/calendar",
 669                                 ICAL_VTODO_COMPONENT,
 670                                 display_edit_individual_task);
 671         }
 672         else {
 673                 /* new task */
 674                 display_edit_individual_task(NULL, 0L);
 675         }
 676 }
 677
 678 void save_task(void) {
 679         long msgnum = 0L;
 680
 681         msgnum = atol(bstr("msgnum"));
 682         if (msgnum > 0L) {
 683                 display_using_handler(msgnum, "text/calendar",
 684                                 ICAL_VTODO_COMPONENT,
 685                                 save_individual_task);
 686         }
 687         else {
 688                 save_individual_task(NULL, 0L);
 689         }
 690 }
 691
 692 void display_edit_event(void) {
 693         long msgnum = 0L;
 694
 695         msgnum = atol(bstr("msgnum"));
 696         if (msgnum > 0L) {
 697                 /* existing event */
 698                 display_using_handler(msgnum, "text/calendar",
 699                                 ICAL_VEVENT_COMPONENT,
 700                                 display_edit_individual_event);
 701         }
 702         else {
 703                 /* new event */
 704                 display_edit_individual_event(NULL, 0L);
 705         }
 706 }
 707
 708 void save_event(void) {
 709         long msgnum = 0L;
 710
 711         msgnum = atol(bstr("msgnum"));
 712
 713         if (msgnum > 0L) {
 714                 display_using_handler(msgnum, "text/calendar",
 715                                 ICAL_VEVENT_COMPONENT,
 716                                 save_individual_event);
 717         }
 718         else {
 719                 save_individual_event(NULL, 0L);
 720         }
 721 }
 722
 723 #endif /* HAVE_ICAL_H */