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=\"Decline\">\n"
 184                         "<INPUT TYPE=\"hidden\" NAME=\"msgnum\" "
 185                                 "VALUE=\"%ld\">"
 186                         "<INPUT TYPE=\"hidden\" NAME=\"cal_partnum\" "
 187                                 "VALUE=\"%s\">"
 188                         "</FORM>"
 189                         "</TD></TR></TABLE></CENTER>\n",
 190                         msgnum, cal_partnum
 191                 );
 192         }
 193 }
 194
 195
 196 /*
 197  * Back end for cal_add() -- this writes it to the message base
 198  */
 199 void pencil_it_in(icalcomponent *cal) {
 200         char hold_rm[SIZ];
 201         char buf[SIZ];
 202         char *serialized_event;
 203
 204         /* Save the name of the room we're in */
 205         strcpy(hold_rm, WC->wc_roomname);
 206
 207         /* Go find the user's calendar */
 208         serv_printf("GOTO %s", CALENDAR_ROOM_NAME);
 209         serv_gets(buf);
 210         if (buf[0] != '2') return;
 211
 212         /* Enter the message */
 213         serialized_event = icalcomponent_as_ical_string(cal);
 214         if (serialized_event != NULL) {
 215                 sprintf(buf, "ENT0 1|||4||");
 216                 serv_puts(buf);
 217                 serv_gets(buf);
 218                 if (buf[0] == '4') {
 219                         serv_puts("Content-type: text/calendar");
 220                         serv_puts("");
 221                         serv_write(serialized_event, strlen(serialized_event));
 222                         serv_puts("");
 223                         serv_puts("000");
 224                 }
 225         }
 226
 227         /* Return to the room we were in */
 228         serv_printf("GOTO %s", hold_rm);
 229         serv_gets(buf);
 230 }
 231
 232
 233 /*
 234  * Add a calendar object to the user's calendar
 235  */
 236 void cal_add(icalcomponent *cal, int recursion_level) {
 237         icalcomponent *c;
 238
 239         /*
 240          * The VEVENT subcomponent is the one we're interested in saving.
 241          */
 242         if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
 243                 /* Save to the message base */
 244                 pencil_it_in(cal);
 245
 246         }
 247
 248         /* If the component has subcomponents, recurse through them. */
 249         for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
 250             (c != 0);
 251             c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
 252                 /* Recursively process subcomponent */
 253                 cal_add(c, recursion_level+1);
 254         }
 255
 256 }
 257
 258
 259 /*
 260  * Deserialize a calendar object in a message so it can be processed.
 261  * (This is the main entry point for these things)
 262  */
 263 void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum) {
 264         icalcomponent *cal;
 265
 266         cal = icalcomponent_new_from_string(part_source);
 267
 268         if (cal == NULL) {
 269                 wprintf("Error parsing calendar object: %s<BR>\n",
 270                         icalerror_strerror(icalerrno));
 271                 return;
 272         }
 273
 274         cal_process_object(cal, 0, msgnum, cal_partnum);
 275
 276         /* Free the memory we obtained from libical's constructor */
 277         icalcomponent_free(cal);
 278 }
 279
 280
 281
 282
 283 /*
 284  * Respond to a meeting request
 285  */
 286 void respond_to_request(void) {
 287         char buf[SIZ];
 288         size_t total_len;
 289         char *serialized_cal;
 290         icalcomponent *cal;
 291
 292         output_headers(3);
 293
 294         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=007700><TR><TD>"
 295                 "<FONT SIZE=+1 COLOR=\"FFFFFF\""
 296                 "<B>Respond to meeting request</B>"
 297                 "</FONT></TD></TR></TABLE><BR>\n"
 298         );
 299
 300         sprintf(buf, "OPNA %s|%s", bstr("msgnum"), bstr("cal_partnum"));
 301         serv_puts(buf);
 302         serv_gets(buf);
 303         if (buf[0] != '2') {
 304                 wprintf("Error: %s<BR>\n", &buf[4]);
 305                 wDumpContent(1);
 306                 return;
 307         }
 308
 309         total_len = atoi(&buf[4]);
 310         serialized_cal = malloc(total_len + 1);
 311
 312         read_server_binary(serialized_cal, total_len);
 313
 314         serv_puts("CLOS");
 315         serv_gets(buf);
 316         serialized_cal[total_len + 1] = 0;
 317
 318         /* Deserialize it */
 319         cal = icalcomponent_new_from_string(serialized_cal);
 320         free(serialized_cal);
 321
 322         if (cal == NULL) {
 323                 wprintf("Error parsing calendar object: %s<BR>\n",
 324                         icalerror_strerror(icalerrno));
 325                 wDumpContent(1);
 326                 return;
 327         }
 328
 329         /* Save this in the user's calendar if necessary */
 330         if (!strcasecmp(bstr("sc"), "Accept")) {
 331                 cal_add(cal, 0);
 332         }
 333
 334         /* Send a reply if necessary */
 335         /* FIXME ... do this */
 336
 337         /* Free the memory we obtained from libical's constructor */
 338         icalcomponent_free(cal);
 339
 340         /* Delete the message from the inbox */
 341         /* FIXME ... do this */
 342
 343
 344         wprintf("Done!<BR>\n");
 345
 346         /* ...and now we're done. */
 347         wDumpContent(1);
 348 }
 349
 350
 351
 352
 353 /*****************************************************************************/
 354
 355
 356
 357 /*
 358  * Display handlers for message reading
 359  */
 360
 361
 362
 363 /*
 364  * If we're reading calendar items, just store them for now.  We have to
 365  * sort and re-output them later when we draw the calendar.
 366  */
 367 void display_individual_cal(icalcomponent *cal, long msgnum) {
 368
 369         WC->num_cal += 1;
 370
 371         WC->disp_cal = realloc(WC->disp_cal,
 372                         (sizeof(icalcomponent *) * WC->num_cal) );
 373         WC->disp_cal[WC->num_cal - 1] = icalcomponent_new_clone(cal);
 374
 375         WC->cal_msgnum = realloc(WC->cal_msgnum,
 376                         (sizeof(long) * WC->num_cal) );
 377         WC->cal_msgnum[WC->num_cal - 1] = msgnum;
 378 }
 379
 380
 381
 382 /*
 383  * Display a task in the task list
 384  */
 385 void display_individual_task(icalcomponent *vtodo, long msgnum) {
 386         icalproperty *p;
 387
 388         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 389         wprintf("<LI><A HREF=\"/display_edit_task?msgnum=%ld\">", msgnum);
 390         if (p != NULL) {
 391                 escputs((char *)icalproperty_get_comment(p));
 392         }
 393         wprintf("</A>\n");
 394 }
 395
 396
 397 /*
 398  * Display a task by itself (for editing)
 399  */
 400 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 401         icalcomponent *vtodo;
 402         icalproperty *p;
 403         struct icaltimetype t;
 404         time_t now;
 405         int created_new_vtodo = 0;
 406
 407         now = time(NULL);
 408
 409         if (supplied_vtodo != NULL) {
 410                 vtodo = supplied_vtodo;
 411         }
 412         else {
 413                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 414                 created_new_vtodo = 1;
 415         }
 416
 417         output_headers(3);
 418         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=007700><TR><TD>"
 419                 "<FONT SIZE=+1 COLOR=\"FFFFFF\""
 420                 "<B>Edit task</B>"
 421                 "</FONT></TD></TR></TABLE><BR>\n"
 422         );
 423
 424         wprintf("<FORM METHOD=\"POST\" ACTION=\"/save_task\">\n");
 425         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 426                 msgnum);
 427
 428         wprintf("Summary: "
 429                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 430                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 431         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 432         if (p != NULL) {
 433                 escputs((char *)icalproperty_get_comment(p));
 434         }
 435         wprintf("\"><BR>\n");
 436
 437         wprintf("Start date: ");
 438         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 439         if (p != NULL) {
 440                 t = icalproperty_get_dtstart(p);
 441         }
 442         else {
 443                 t = icaltime_from_timet(now, 0);
 444         }
 445         display_icaltimetype_as_webform(&t, "dtstart");
 446         wprintf("<BR>\n");
 447
 448         wprintf("Due date: ");
 449         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 450         if (p != NULL) {
 451                 t = icalproperty_get_due(p);
 452         }
 453         else {
 454                 t = icaltime_from_timet(now, 0);
 455         }
 456         display_icaltimetype_as_webform(&t, "due");
 457         wprintf("<BR>\n");
 458
 459         wprintf("<CENTER><TEXTAREA NAME=\"description\" wrap=soft "
 460                 "ROWS=10 COLS=80 WIDTH=80>\n"
 461         );
 462         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 463         if (p != NULL) {
 464                 escputs((char *)icalproperty_get_comment(p));
 465         }
 466         wprintf("</TEXTAREA><BR>\n");
 467
 468         wprintf("<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Save\">"
 469                 "&nbsp;&nbsp;"
 470                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Delete\">\n"
 471                 "&nbsp;&nbsp;"
 472                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Cancel\">\n"
 473                 "</CENTER>\n"
 474         );
 475
 476         wprintf("</FORM>\n");
 477
 478         wDumpContent(1);
 479
 480         if (created_new_vtodo) {
 481                 icalcomponent_free(vtodo);
 482         }
 483 }
 484
 485 /*
 486  * Save an edited task
 487  */
 488 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 489         char buf[SIZ];
 490         int delete_existing = 0;
 491         icalproperty *prop;
 492         icalcomponent *vtodo;
 493         int created_new_vtodo = 0;
 494
 495         if (supplied_vtodo != NULL) {
 496                 vtodo = supplied_vtodo;
 497         }
 498         else {
 499                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 500                 created_new_vtodo = 1;
 501         }
 502
 503         if (!strcasecmp(bstr("sc"), "Save")) {
 504
 505                 /* Replace values in the component with ones from the form */
 506
 507                 while (prop = icalcomponent_get_first_property(vtodo,
 508                       ICAL_SUMMARY_PROPERTY), prop != NULL) {
 509                         icalcomponent_remove_property(vtodo, prop);
 510                 }
 511                 icalcomponent_add_property(vtodo,
 512                         icalproperty_new_summary(bstr("summary")));
 513
 514                 while (prop = icalcomponent_get_first_property(vtodo,
 515                       ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 516                         icalcomponent_remove_property(vtodo, prop);
 517                 }
 518                 icalcomponent_add_property(vtodo,
 519                         icalproperty_new_description(bstr("description")));
 520
 521                 while (prop = icalcomponent_get_first_property(vtodo,
 522                       ICAL_DTSTART_PROPERTY), prop != NULL) {
 523                         icalcomponent_remove_property(vtodo, prop);
 524                 }
 525                 icalcomponent_add_property(vtodo,
 526                         icalproperty_new_dtstart(
 527                                 icaltime_from_webform("dtstart")
 528                         )
 529                 );
 530
 531                 while (prop = icalcomponent_get_first_property(vtodo,
 532                       ICAL_DUE_PROPERTY), prop != NULL) {
 533                         icalcomponent_remove_property(vtodo, prop);
 534                 }
 535                 icalcomponent_add_property(vtodo,
 536                         icalproperty_new_due(
 537                                 icaltime_from_webform("due")
 538                         )
 539                 );
 540
 541                 /* Serialize it and save it to the message base */
 542                 serv_puts("ENT0 1|||4");
 543                 serv_gets(buf);
 544                 if (buf[0] == '4') {
 545                         serv_puts("Content-type: text/calendar");
 546                         serv_puts("");
 547                         serv_puts(icalcomponent_as_ical_string(vtodo));
 548                         serv_puts("000");
 549                         delete_existing = 1;
 550                 }
 551         }
 552
 553         /*
 554          * If the user clicked 'Delete' then delete it, period.
 555          */
 556         if (!strcasecmp(bstr("sc"), "Delete")) {
 557                 delete_existing = 1;
 558         }
 559
 560         if ( (delete_existing) && (msgnum > 0L) ) {
 561                 serv_printf("DELE %ld", atol(bstr("msgnum")));
 562                 serv_gets(buf);
 563         }
 564
 565         if (created_new_vtodo) {
 566                 icalcomponent_free(vtodo);
 567         }
 568
 569         /* Go back to the task list */
 570         readloop("readfwd");
 571 }
 572
 573
 574
 575 /*
 576  * Code common to all display handlers.  Given a message number and a MIME
 577  * type, we load the message and hunt for that MIME type.  If found, we load
 578  * the relevant part, deserialize it into a libical component, filter it for
 579  * the requested object type, and feed it to the specified handler.
 580  */
 581 void display_using_handler(long msgnum,
 582                         char *mimetype,
 583                         icalcomponent_kind which_kind,
 584                         void (*callback)(icalcomponent *, long)
 585         ) {
 586         char buf[SIZ];
 587         char mime_partnum[SIZ];
 588         char mime_filename[SIZ];
 589         char mime_content_type[SIZ];
 590         char mime_disposition[SIZ];
 591         int mime_length;
 592         char relevant_partnum[SIZ];
 593         char *relevant_source = NULL;
 594         icalcomponent *cal, *c;
 595
 596         sprintf(buf, "MSG0 %ld|1", msgnum);     /* ask for headers only */
 597         serv_puts(buf);
 598         serv_gets(buf);
 599         if (buf[0] != '1') return;
 600
 601         while (serv_gets(buf), strcmp(buf, "000")) {
 602                 if (!strncasecmp(buf, "part=", 5)) {
 603                         extract(mime_filename, &buf[5], 1);
 604                         extract(mime_partnum, &buf[5], 2);
 605                         extract(mime_disposition, &buf[5], 3);
 606                         extract(mime_content_type, &buf[5], 4);
 607                         mime_length = extract_int(&buf[5], 5);
 608
 609                         if (!strcasecmp(mime_content_type, "text/calendar")) {
 610                                 strcpy(relevant_partnum, mime_partnum);
 611                         }
 612
 613                 }
 614         }
 615
 616         if (strlen(relevant_partnum) > 0) {
 617                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 618                 if (relevant_source != NULL) {
 619
 620                         cal = icalcomponent_new_from_string(relevant_source);
 621                         if (cal != NULL) {
 622
 623                                 /* Simple components of desired type */
 624                                 if (icalcomponent_isa(cal) == which_kind) {
 625                                         callback(cal, msgnum);
 626                                 }
 627
 628                                 /* Subcomponents of desired type */
 629                                 for (c = icalcomponent_get_first_component(cal,
 630                                     which_kind);
 631                                     (c != 0);
 632                                     c = icalcomponent_get_next_component(cal,
 633                                     which_kind)) {
 634                                         callback(c, msgnum);
 635                                 }
 636                                 icalcomponent_free(cal);
 637                         }
 638                         free(relevant_source);
 639                 }
 640         }
 641
 642 }
 643
 644 void display_calendar(long msgnum) {
 645         display_using_handler(msgnum, "text/calendar",
 646                                 ICAL_VEVENT_COMPONENT,
 647                                 display_individual_cal);
 648 }
 649
 650 void display_task(long msgnum) {
 651         display_using_handler(msgnum, "text/calendar",
 652                                 ICAL_VTODO_COMPONENT,
 653                                 display_individual_task);
 654 }
 655
 656 void display_edit_task(void) {
 657         long msgnum = 0L;
 658
 659         msgnum = atol(bstr("msgnum"));
 660         if (msgnum > 0L) {
 661                 /* existing task */
 662                 display_using_handler(msgnum, "text/calendar",
 663                                 ICAL_VTODO_COMPONENT,
 664                                 display_edit_individual_task);
 665         }
 666         else {
 667                 /* new task */
 668                 display_edit_individual_task(NULL, 0L);
 669         }
 670 }
 671
 672 void save_task(void) {
 673         long msgnum = 0L;
 674
 675         msgnum = atol(bstr("msgnum"));
 676         if (msgnum > 0L) {
 677                 display_using_handler(msgnum, "text/calendar",
 678                                 ICAL_VTODO_COMPONENT,
 679                                 save_individual_task);
 680         }
 681         else {
 682                 save_individual_task(NULL, 0L);
 683         }
 684 }
 685
 686 void display_edit_event(void) {
 687         long msgnum = 0L;
 688
 689         msgnum = atol(bstr("msgnum"));
 690         if (msgnum > 0L) {
 691                 /* existing event */
 692                 display_using_handler(msgnum, "text/calendar",
 693                                 ICAL_VEVENT_COMPONENT,
 694                                 display_edit_individual_event);
 695         }
 696         else {
 697                 /* new event */
 698                 display_edit_individual_event(NULL, 0L);
 699         }
 700 }
 701
 702 void save_event(void) {
 703         long msgnum = 0L;
 704
 705         msgnum = atol(bstr("msgnum"));
 706
 707         if (msgnum > 0L) {
 708                 display_using_handler(msgnum, "text/calendar",
 709                                 ICAL_VEVENT_COMPONENT,
 710                                 save_individual_event);
 711         }
 712         else {
 713                 save_individual_event(NULL, 0L);
 714         }
 715 }
 716
 717 #endif /* HAVE_ICAL_H */