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 = ICAL_METHOD_NONE;
  82         icalproperty *p;
  83         struct icaltimetype t;
  84         time_t tt;
  85         char buf[SIZ];
  86         char conflict_name[SIZ];
  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/vcalendar.gif\">"
 105                                 "&nbsp;&nbsp;"
 106                                 "<B>Meeting invitation</B>
 107                                 </TD></TR>\n"
 108                         );
 109                         break;
 110                     case ICAL_METHOD_PUBLISH:
 111                         wprintf("<TR><TD COLSPAN=2>\n"
 112                                 "<IMG ALIGN=CENTER "
 113                                 "SRC=\"/static/vcalendar.gif\">"
 114                                 "&nbsp;&nbsp;"
 115                                 "<B>Published event</B>
 116                                 </TD></TR>\n"
 117                         );
 118                         break;
 119                     default:
 120                         wprintf("<TR><TD COLSPAN=2>"
 121                                 "I don't know what to do with this.</TD></TR>"
 122                                 "\n");
 123                         break;
 124                 }
 125         }
 126
 127         p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
 128         if (p != NULL) {
 129                 wprintf("<TR><TD><B>Summary:</B></TD><TD>");
 130                 escputs((char *)icalproperty_get_comment(p));
 131                 wprintf("</TD></TR>\n");
 132         }
 133
 134         p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
 135         if (p != NULL) {
 136                 wprintf("<TR><TD><B>Location:</B></TD><TD>");
 137                 escputs((char *)icalproperty_get_comment(p));
 138                 wprintf("</TD></TR>\n");
 139         }
 140
 141         /*
 142          * Only show start/end times if we're actually looking at the VEVENT
 143          * component.  Otherwise it shows bogus dates for things like timezone.
 144          */
 145         if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
 146
 147                 p = icalcomponent_get_first_property(cal,
 148                                                 ICAL_DTSTART_PROPERTY);
 149                 if (p != NULL) {
 150                         t = icalproperty_get_dtstart(p);
 151                         tt = icaltime_as_timet(t);
 152                         fmt_date(buf, tt);
 153                         wprintf("<TR><TD><B>Starting date/time:</B></TD><TD>"
 154                                 "%s</TD></TR>", buf
 155                         );
 156                 }
 157
 158                 p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
 159                 if (p != NULL) {
 160                         t = icalproperty_get_dtend(p);
 161                         tt = icaltime_as_timet(t);
 162                         fmt_date(buf, tt);
 163                         wprintf("<TR><TD><B>Ending date/time:</B></TD><TD>"
 164                                 "%s</TD></TR>", buf
 165                         );
 166                 }
 167
 168         }
 169
 170         p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
 171         if (p != NULL) {
 172                 wprintf("<TR><TD><B>Description:</B></TD><TD>");
 173                 escputs((char *)icalproperty_get_comment(p));
 174                 wprintf("</TD></TR>\n");
 175         }
 176
 177         /* If the component has subcomponents, recurse through them. */
 178         for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
 179             (c != 0);
 180             c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
 181                 /* Recursively process subcomponent */
 182                 cal_process_object(c, recursion_level+1, msgnum, cal_partnum);
 183         }
 184
 185         /* If this is a REQUEST, display conflicts and buttons */
 186         if (the_method == ICAL_METHOD_REQUEST) {
 187
 188                 /* Check for conflicts */
 189                 serv_printf("ICAL conflicts|%ld|%s|", msgnum, cal_partnum);
 190                 serv_gets(buf);
 191                 if (buf[0] == '1') {
 192                         while (serv_gets(buf), strcmp(buf, "000")) {
 193                                 extract(conflict_name, buf, 3);
 194                                 is_update = extract_int(buf, 4);
 195                                 wprintf("<TR><TD><B><I>%s</I></B></TD>"
 196                                         "<TD>"
 197                                         "%s "
 198                                         "<I>&quot;",
 199
 200                                         (is_update ?
 201                                                 "Update:" :
 202                                                 "CONFLICT:"
 203                                         ),
 204
 205                                         (is_update ?
 206                                                 "This is an update of" :
 207                                                 "This event would conflict with"
 208                                         )
 209
 210                                 );
 211                                 escputs(conflict_name);
 212                                 wprintf("&quot;</I> "
 213                                         "which is already in your calendar."
 214                                         "</TD></TR>\n");
 215                         }
 216                 }
 217
 218                 /* Display the Accept/Decline buttons */
 219                 wprintf("<TR><TD COLSPAN=2>"
 220                         "<FORM METHOD=\"GET\" "
 221                         "ACTION=\"/respond_to_request\">\n"
 222                         "<INPUT TYPE=\"submit\" NAME=\"sc\" "
 223                                 "VALUE=\"Accept\">\n"
 224                         "&nbsp;&nbsp;"
 225                         "<INPUT TYPE=\"submit\" NAME=\"sc\" "
 226                                 "VALUE=\"Tentative\">\n"
 227                         "&nbsp;&nbsp;"
 228                         "<INPUT TYPE=\"submit\" NAME=\"sc\" "
 229                                 "VALUE=\"Decline\">\n"
 230                         "<INPUT TYPE=\"hidden\" NAME=\"msgnum\" "
 231                                 "VALUE=\"%ld\">"
 232                         "<INPUT TYPE=\"hidden\" NAME=\"cal_partnum\" "
 233                                 "VALUE=\"%s\">"
 234                         "</FORM>"
 235                         "</TD></TR>\n",
 236                         msgnum, cal_partnum
 237                 );
 238
 239         }
 240
 241         /* Trailing HTML for the display of this object */
 242         if (recursion_level == 0) {
 243
 244                 wprintf("</TR></TABLE></CENTER>\n");
 245         }
 246 }
 247
 248
 249 /*
 250  * Deserialize a calendar object in a message so it can be processed.
 251  * (This is the main entry point for these things)
 252  */
 253 void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum) {
 254         icalcomponent *cal;
 255
 256         cal = icalcomponent_new_from_string(part_source);
 257
 258         if (cal == NULL) {
 259                 wprintf("Error parsing calendar object: %s<BR>\n",
 260                         icalerror_strerror(icalerrno));
 261                 return;
 262         }
 263
 264         cal_process_object(cal, 0, msgnum, cal_partnum);
 265
 266         /* Free the memory we obtained from libical's constructor */
 267         icalcomponent_free(cal);
 268 }
 269
 270
 271
 272
 273 /*
 274  * Respond to a meeting request
 275  */
 276 void respond_to_request(void) {
 277         char buf[SIZ];
 278
 279         output_headers(3);
 280
 281         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=007700><TR><TD>"
 282                 "<FONT SIZE=+1 COLOR=\"FFFFFF\""
 283                 "<B>Respond to meeting request</B>"
 284                 "</FONT></TD></TR></TABLE><BR>\n"
 285         );
 286
 287         serv_printf("ICAL respond|%s|%s|%s|",
 288                 bstr("msgnum"),
 289                 bstr("cal_partnum"),
 290                 bstr("sc")
 291         );
 292         serv_gets(buf);
 293
 294         if (buf[0] == '2') {
 295                 wprintf("<TABLE BORDER=0><TR><TD>"
 296                         "<IMG SRC=\"static/vcalendar.gif\" ALIGN=CENTER>"
 297                         "</TD><TD>"
 298                 );
 299                 if (!strcasecmp(bstr("sc"), "accept")) {
 300                         wprintf("You have accepted this meeting invitation.  "
 301                                 "It has been entered into your calendar, "
 302                         );
 303                 } else if (!strcasecmp(bstr("sc"), "tentative")) {
 304                         wprintf("You have tentatively accepted this meeting invitation.  "
 305                                 "It has been 'pencilled in' to your calendar, "
 306                         );
 307                 } else if (!strcasecmp(bstr("sc"), "decline")) {
 308                         wprintf("You have declined this meeting invitation.  "
 309                                 "It has <b>not</b> been entered into your calendar, "
 310                         );
 311                 }
 312                 wprintf("and a reply has been sent to the meeting organizer."
 313                         "</TD></TR></TABLE>\n"
 314                 );
 315         } else {
 316                 wprintf("<IMG SRC=\"static/error.gif\" ALIGN=CENTER>"
 317                         "%s\n", &buf[4]);
 318         }
 319
 320         wprintf("<A HREF=\"/dotskip?room=");
 321         urlescputs(WC->wc_roomname);
 322         wprintf("\">Return to messages</A><BR>\n");
 323
 324         wDumpContent(1);
 325 }
 326
 327
 328
 329
 330 /*****************************************************************************/
 331
 332
 333
 334 /*
 335  * Display handlers for message reading
 336  */
 337
 338
 339
 340 /*
 341  * If we're reading calendar items, just store them for now.  We have to
 342  * sort and re-output them later when we draw the calendar.
 343  */
 344 void display_individual_cal(icalcomponent *cal, long msgnum) {
 345
 346         WC->num_cal += 1;
 347
 348         WC->disp_cal = realloc(WC->disp_cal,
 349                         (sizeof(icalcomponent *) * WC->num_cal) );
 350         WC->disp_cal[WC->num_cal - 1] = icalcomponent_new_clone(cal);
 351
 352         WC->cal_msgnum = realloc(WC->cal_msgnum,
 353                         (sizeof(long) * WC->num_cal) );
 354         WC->cal_msgnum[WC->num_cal - 1] = msgnum;
 355 }
 356
 357
 358
 359 /*
 360  * Display a task in the task list
 361  */
 362 void display_individual_task(icalcomponent *vtodo, long msgnum) {
 363         icalproperty *p;
 364
 365         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 366         wprintf("<LI><A HREF=\"/display_edit_task?msgnum=%ld\">", msgnum);
 367         if (p != NULL) {
 368                 escputs((char *)icalproperty_get_comment(p));
 369         }
 370         wprintf("</A>\n");
 371 }
 372
 373
 374 /*
 375  * Display a task by itself (for editing)
 376  */
 377 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 378         icalcomponent *vtodo;
 379         icalproperty *p;
 380         struct icaltimetype t;
 381         time_t now;
 382         int created_new_vtodo = 0;
 383
 384         now = time(NULL);
 385
 386         if (supplied_vtodo != NULL) {
 387                 vtodo = supplied_vtodo;
 388         }
 389         else {
 390                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 391                 created_new_vtodo = 1;
 392         }
 393
 394         output_headers(3);
 395         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=007700><TR><TD>"
 396                 "<FONT SIZE=+1 COLOR=\"FFFFFF\""
 397                 "<B>Edit task</B>"
 398                 "</FONT></TD></TR></TABLE><BR>\n"
 399         );
 400
 401         wprintf("<FORM METHOD=\"POST\" ACTION=\"/save_task\">\n");
 402         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 403                 msgnum);
 404
 405         wprintf("Summary: "
 406                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 407                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 408         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 409         if (p != NULL) {
 410                 escputs((char *)icalproperty_get_comment(p));
 411         }
 412         wprintf("\"><BR>\n");
 413
 414         wprintf("Start date: ");
 415         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 416         if (p != NULL) {
 417                 t = icalproperty_get_dtstart(p);
 418         }
 419         else {
 420                 t = icaltime_from_timet(now, 0);
 421         }
 422         display_icaltimetype_as_webform(&t, "dtstart");
 423         wprintf("<BR>\n");
 424
 425         wprintf("Due date: ");
 426         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 427         if (p != NULL) {
 428                 t = icalproperty_get_due(p);
 429         }
 430         else {
 431                 t = icaltime_from_timet(now, 0);
 432         }
 433         display_icaltimetype_as_webform(&t, "due");
 434         wprintf("<BR>\n");
 435
 436         wprintf("<CENTER><TEXTAREA NAME=\"description\" wrap=soft "
 437                 "ROWS=10 COLS=80 WIDTH=80>\n"
 438         );
 439         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 440         if (p != NULL) {
 441                 escputs((char *)icalproperty_get_comment(p));
 442         }
 443         wprintf("</TEXTAREA><BR>\n");
 444
 445         wprintf("<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Save\">"
 446                 "&nbsp;&nbsp;"
 447                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Delete\">\n"
 448                 "&nbsp;&nbsp;"
 449                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Cancel\">\n"
 450                 "</CENTER>\n"
 451         );
 452
 453         wprintf("</FORM>\n");
 454
 455         wDumpContent(1);
 456
 457         if (created_new_vtodo) {
 458                 icalcomponent_free(vtodo);
 459         }
 460 }
 461
 462 /*
 463  * Save an edited task
 464  */
 465 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 466         char buf[SIZ];
 467         int delete_existing = 0;
 468         icalproperty *prop;
 469         icalcomponent *vtodo;
 470         int created_new_vtodo = 0;
 471
 472         if (supplied_vtodo != NULL) {
 473                 vtodo = supplied_vtodo;
 474         }
 475         else {
 476                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 477                 created_new_vtodo = 1;
 478         }
 479
 480         if (!strcasecmp(bstr("sc"), "Save")) {
 481
 482                 /* Replace values in the component with ones from the form */
 483
 484                 while (prop = icalcomponent_get_first_property(vtodo,
 485                       ICAL_SUMMARY_PROPERTY), prop != NULL) {
 486                         icalcomponent_remove_property(vtodo, prop);
 487                 }
 488                 icalcomponent_add_property(vtodo,
 489                         icalproperty_new_summary(bstr("summary")));
 490
 491                 while (prop = icalcomponent_get_first_property(vtodo,
 492                       ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 493                         icalcomponent_remove_property(vtodo, prop);
 494                 }
 495                 icalcomponent_add_property(vtodo,
 496                         icalproperty_new_description(bstr("description")));
 497
 498                 while (prop = icalcomponent_get_first_property(vtodo,
 499                       ICAL_DTSTART_PROPERTY), prop != NULL) {
 500                         icalcomponent_remove_property(vtodo, prop);
 501                 }
 502                 icalcomponent_add_property(vtodo,
 503                         icalproperty_new_dtstart(
 504                                 icaltime_from_webform("dtstart")
 505                         )
 506                 );
 507
 508                 while (prop = icalcomponent_get_first_property(vtodo,
 509                       ICAL_DUE_PROPERTY), prop != NULL) {
 510                         icalcomponent_remove_property(vtodo, prop);
 511                 }
 512                 icalcomponent_add_property(vtodo,
 513                         icalproperty_new_due(
 514                                 icaltime_from_webform("due")
 515                         )
 516                 );
 517
 518                 /* Serialize it and save it to the message base */
 519                 serv_puts("ENT0 1|||4");
 520                 serv_gets(buf);
 521                 if (buf[0] == '4') {
 522                         serv_puts("Content-type: text/calendar");
 523                         serv_puts("");
 524                         serv_puts(icalcomponent_as_ical_string(vtodo));
 525                         serv_puts("000");
 526
 527                         /* Probably not necessary; the server will see the UID
 528                          * of the object and delete the old one anyway, but
 529                          * just in case...
 530                          */
 531                         delete_existing = 1;
 532                 }
 533         }
 534
 535         /*
 536          * If the user clicked 'Delete' then explicitly delete the message.
 537          */
 538         if (!strcasecmp(bstr("sc"), "Delete")) {
 539                 delete_existing = 1;
 540         }
 541
 542         if ( (delete_existing) && (msgnum > 0L) ) {
 543                 serv_printf("DELE %ld", atol(bstr("msgnum")));
 544                 serv_gets(buf);
 545         }
 546
 547         if (created_new_vtodo) {
 548                 icalcomponent_free(vtodo);
 549         }
 550
 551         /* Go back to the task list */
 552         readloop("readfwd");
 553 }
 554
 555
 556
 557 /*
 558  * Code common to all display handlers.  Given a message number and a MIME
 559  * type, we load the message and hunt for that MIME type.  If found, we load
 560  * the relevant part, deserialize it into a libical component, filter it for
 561  * the requested object type, and feed it to the specified handler.
 562  */
 563 void display_using_handler(long msgnum,
 564                         char *mimetype,
 565                         icalcomponent_kind which_kind,
 566                         void (*callback)(icalcomponent *, long)
 567         ) {
 568         char buf[SIZ];
 569         char mime_partnum[SIZ];
 570         char mime_filename[SIZ];
 571         char mime_content_type[SIZ];
 572         char mime_disposition[SIZ];
 573         int mime_length;
 574         char relevant_partnum[SIZ];
 575         char *relevant_source = NULL;
 576         icalcomponent *cal, *c;
 577
 578         sprintf(buf, "MSG0 %ld|1", msgnum);     /* ask for headers only */
 579         serv_puts(buf);
 580         serv_gets(buf);
 581         if (buf[0] != '1') return;
 582
 583         while (serv_gets(buf), strcmp(buf, "000")) {
 584                 if (!strncasecmp(buf, "part=", 5)) {
 585                         extract(mime_filename, &buf[5], 1);
 586                         extract(mime_partnum, &buf[5], 2);
 587                         extract(mime_disposition, &buf[5], 3);
 588                         extract(mime_content_type, &buf[5], 4);
 589                         mime_length = extract_int(&buf[5], 5);
 590
 591                         if (!strcasecmp(mime_content_type, "text/calendar")) {
 592                                 strcpy(relevant_partnum, mime_partnum);
 593                         }
 594
 595                 }
 596         }
 597
 598         if (strlen(relevant_partnum) > 0) {
 599                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 600                 if (relevant_source != NULL) {
 601
 602                         cal = icalcomponent_new_from_string(relevant_source);
 603                         if (cal != NULL) {
 604
 605                                 /* Simple components of desired type */
 606                                 if (icalcomponent_isa(cal) == which_kind) {
 607                                         callback(cal, msgnum);
 608                                 }
 609
 610                                 /* Subcomponents of desired type */
 611                                 for (c = icalcomponent_get_first_component(cal,
 612                                     which_kind);
 613                                     (c != 0);
 614                                     c = icalcomponent_get_next_component(cal,
 615                                     which_kind)) {
 616                                         callback(c, msgnum);
 617                                 }
 618                                 icalcomponent_free(cal);
 619                         }
 620                         free(relevant_source);
 621                 }
 622         }
 623
 624 }
 625
 626 void display_calendar(long msgnum) {
 627         display_using_handler(msgnum, "text/calendar",
 628                                 ICAL_VEVENT_COMPONENT,
 629                                 display_individual_cal);
 630 }
 631
 632 void display_task(long msgnum) {
 633         display_using_handler(msgnum, "text/calendar",
 634                                 ICAL_VTODO_COMPONENT,
 635                                 display_individual_task);
 636 }
 637
 638 void display_edit_task(void) {
 639         long msgnum = 0L;
 640
 641         msgnum = atol(bstr("msgnum"));
 642         if (msgnum > 0L) {
 643                 /* existing task */
 644                 display_using_handler(msgnum, "text/calendar",
 645                                 ICAL_VTODO_COMPONENT,
 646                                 display_edit_individual_task);
 647         }
 648         else {
 649                 /* new task */
 650                 display_edit_individual_task(NULL, 0L);
 651         }
 652 }
 653
 654 void save_task(void) {
 655         long msgnum = 0L;
 656
 657         msgnum = atol(bstr("msgnum"));
 658         if (msgnum > 0L) {
 659                 display_using_handler(msgnum, "text/calendar",
 660                                 ICAL_VTODO_COMPONENT,
 661                                 save_individual_task);
 662         }
 663         else {
 664                 save_individual_task(NULL, 0L);
 665         }
 666 }
 667
 668 void display_edit_event(void) {
 669         long msgnum = 0L;
 670
 671         msgnum = atol(bstr("msgnum"));
 672         if (msgnum > 0L) {
 673                 /* existing event */
 674                 display_using_handler(msgnum, "text/calendar",
 675                                 ICAL_VEVENT_COMPONENT,
 676                                 display_edit_individual_event);
 677         }
 678         else {
 679                 /* new event */
 680                 display_edit_individual_event(NULL, 0L);
 681         }
 682 }
 683
 684 void save_event(void) {
 685         long msgnum = 0L;
 686
 687         msgnum = atol(bstr("msgnum"));
 688
 689         if (msgnum > 0L) {
 690                 display_using_handler(msgnum, "text/calendar",
 691                                 ICAL_VEVENT_COMPONENT,
 692                                 save_individual_event);
 693         }
 694         else {
 695                 save_individual_event(NULL, 0L);
 696         }
 697 }
 698
 699 #endif /* HAVE_ICAL_H */