webcit/event.c

   1 /*
   2  * $Id$
   3  *
   4  * Editing calendar events.
   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
  31 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
  32
  33 /*
  34  * Display an event by itself (for editing)
  35  */
  36 void display_edit_individual_event(icalcomponent *supplied_vevent, long msgnum) {
  37         icalcomponent *vevent;
  38         icalproperty *p;
  39         icalvalue *v;
  40         struct icaltimetype t_start, t_end;
  41         time_t now;
  42         struct tm tm_now;
  43         int created_new_vevent = 0;
  44         icalproperty *organizer = NULL;
  45         char organizer_string[SIZ];
  46         icalproperty *attendee = NULL;
  47         char attendee_string[SIZ];
  48         char buf[SIZ];
  49         int i;
  50         int organizer_is_me = 0;
  51         int sequence = 0;
  52
  53         now = time(NULL) % 60;  /* mod 60 to force :00 seconds */
  54         strcpy(organizer_string, "");
  55         strcpy(attendee_string, "");
  56
  57         if (supplied_vevent != NULL) {
  58                 vevent = supplied_vevent;
  59         }
  60         else {
  61                 vevent = icalcomponent_new(ICAL_VEVENT_COMPONENT);
  62                 created_new_vevent = 1;
  63         }
  64
  65         /* Learn the sequence */
  66         p = icalcomponent_get_first_property(vevent, ICAL_SEQUENCE_PROPERTY);
  67         if (p != NULL) {
  68                 sequence = icalproperty_get_sequence(p);
  69         }
  70
  71         /* Begin output */
  72         output_headers(3);
  73         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=007700><TR><TD>"
  74                 "<IMG ALIGN=CENTER SRC=\"/static/vcalendar.gif\">"
  75                 "<FONT SIZE=+1 COLOR=\"FFFFFF\""
  76                 "<B>Edit event</B>"
  77                 "</FONT></TD></TR></TABLE><BR>\n"
  78         );
  79
  80         /************************************************************
  81          * Uncomment this to see the UID in calendar events for debugging
  82         wprintf("UID == ");
  83         p = icalcomponent_get_first_property(vevent, ICAL_UID_PROPERTY);
  84         if (p != NULL) {
  85                 escputs((char *)icalproperty_get_comment(p));
  86         }
  87         wprintf("<BR>\n");
  88         wprintf("SEQUENCE == %d<BR>\n", sequence);
  89         *************************************************************/
  90
  91         wprintf("<FORM NAME=\"EventForm\" METHOD=\"POST\" ACTION=\"/save_event\">\n");
  92
  93         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
  94                 msgnum);
  95         wprintf("<INPUT TYPE=\"hidden\" NAME=\"calview\" VALUE=\"%s\">\n",
  96                 bstr("calview"));
  97         wprintf("<INPUT TYPE=\"hidden\" NAME=\"year\" VALUE=\"%s\">\n",
  98                 bstr("year"));
  99         wprintf("<INPUT TYPE=\"hidden\" NAME=\"month\" VALUE=\"%s\">\n",
 100                 bstr("month"));
 101         wprintf("<INPUT TYPE=\"hidden\" NAME=\"day\" VALUE=\"%s\">\n",
 102                 bstr("day"));
 103
 104         /* Put it in a borderless table so it lines up nicely */
 105         wprintf("<TABLE border=0 width=100%%>\n");
 106
 107         wprintf("<TR><TD><B>Summary</B></TD><TD>\n"
 108                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 109                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 110         p = icalcomponent_get_first_property(vevent, ICAL_SUMMARY_PROPERTY);
 111         if (p != NULL) {
 112                 escputs((char *)icalproperty_get_comment(p));
 113         }
 114         wprintf("\"></TD></TR>\n");
 115
 116         wprintf("<TR><TD><B>Location</B></TD><TD>\n"
 117                 "<INPUT TYPE=\"text\" NAME=\"location\" "
 118                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 119         p = icalcomponent_get_first_property(vevent, ICAL_LOCATION_PROPERTY);
 120         if (p != NULL) {
 121                 escputs((char *)icalproperty_get_comment(p));
 122         }
 123         wprintf("\"></TD></TR>\n");
 124
 125         wprintf("<TR><TD><B>Start</B></TD><TD>\n");
 126         p = icalcomponent_get_first_property(vevent, ICAL_DTSTART_PROPERTY);
 127         if (p != NULL) {
 128                 t_start = icalproperty_get_dtstart(p);
 129                 if (t_start.is_date) {
 130                         t_start.hour = 0;
 131                         t_start.minute = 0;
 132                         t_start.second = 0;
 133                 }
 134         }
 135         else {
 136                 memcpy(&tm_now, localtime(&now), sizeof(struct tm));
 137                 tm_now.tm_year = atoi(bstr("year")) - 1900;
 138                 tm_now.tm_mon = atoi(bstr("month")) - 1;
 139                 tm_now.tm_mday = atoi(bstr("day"));
 140                 if (strlen(bstr("hour")) > 0) {
 141                         tm_now.tm_hour = atoi(bstr("hour"));
 142                         tm_now.tm_min = atoi(bstr("minute"));
 143                         tm_now.tm_sec = 0;
 144                 }
 145                 else {
 146                         tm_now.tm_hour = 9;
 147                         tm_now.tm_min = 0;
 148                         tm_now.tm_sec = 0;
 149                 }
 150
 151                 t_start = icaltime_from_timet_with_zone(
 152                         mktime(&tm_now),
 153                         ((!strcasecmp(bstr("alldayevent"), "yes")) ? 1 : 0),
 154                         icaltimezone_get_utc_timezone
 155                 );
 156                 t_start.is_utc = 1;
 157
 158         }
 159         display_icaltimetype_as_webform(&t_start, "dtstart");
 160
 161         wprintf("<INPUT TYPE=\"checkbox\" NAME=\"alldayevent\" "
 162                 "VALUE=\"yes\" onClick=\"
 163
 164                         if (this.checked) {
 165                                 this.form.dtstart_hour.value='0';
 166                                 this.form.dtstart_hour.disabled = true;
 167                                 this.form.dtstart_minute.value='0';
 168                                 this.form.dtstart_minute.disabled = true;
 169                                 this.form.dtend_hour.value='0';
 170                                 this.form.dtend_hour.disabled = true;
 171                                 this.form.dtend_minute.value='0';
 172                                 this.form.dtend_minute.disabled = true;
 173                                 this.form.dtend_month.disabled = true;
 174                                 this.form.dtend_day.disabled = true;
 175                                 this.form.dtend_year.disabled = true;
 176                         }
 177                         else {
 178                                 this.form.dtstart_hour.disabled = false;
 179                                 this.form.dtstart_minute.disabled = false;
 180                                 this.form.dtend_hour.disabled = false;
 181                                 this.form.dtend_minute.disabled = false;
 182                                 this.form.dtend_month.disabled = false;
 183                                 this.form.dtend_day.disabled = false;
 184                                 this.form.dtend_year.disabled = false;
 185                         }
 186
 187
 188                 \" %s >All day event",
 189                 (t_start.is_date ? "CHECKED" : "" )
 190         );
 191
 192         wprintf("</TD></TR>\n");
 193
 194         /* If this is an all-day-event, set the end time to be identical to
 195          * the start time (the hour/minute/second will be set to midnight).
 196          * Otherwise extract or create it.
 197          */
 198         wprintf("<TR><TD><B>End</B></TD><TD>\n");
 199         if (t_start.is_date) {
 200                 t_end = t_start;
 201         }
 202         else {
 203                 p = icalcomponent_get_first_property(vevent,
 204                                                         ICAL_DTEND_PROPERTY);
 205                 if (p != NULL) {
 206                         t_end = icalproperty_get_dtend(p);
 207                 }
 208                 else {
 209                         /* If this is not an all-day event and there is no
 210                          * end time specified, make the default one hour
 211                          * from the start time.
 212                          */
 213                         t_end = t_start;
 214                         t_end.hour += 1;
 215                         t_end.second = 0;
 216                         t_end = icaltime_normalize(t_end);
 217                         /* t_end = icaltime_from_timet(now, 0); */
 218                 }
 219         }
 220         display_icaltimetype_as_webform(&t_end, "dtend");
 221         wprintf("</TD></TR>\n");
 222
 223         wprintf("<TR><TD><B>Notes</B></TD><TD>\n"
 224                 "<TEXTAREA NAME=\"description\" wrap=soft "
 225                 "ROWS=10 COLS=80 WIDTH=80>\n"
 226         );
 227         p = icalcomponent_get_first_property(vevent, ICAL_DESCRIPTION_PROPERTY);
 228         if (p != NULL) {
 229                 escputs((char *)icalproperty_get_comment(p));
 230         }
 231         wprintf("</TEXTAREA></TD></TR>");
 232
 233         /* For a new event, the user creating the event should be the
 234          * organizer.  Set this field accordingly.
 235          */
 236         if (icalcomponent_get_first_property(vevent, ICAL_ORGANIZER_PROPERTY)
 237            == NULL) {
 238                 sprintf(organizer_string, "MAILTO:%s", WC->cs_inet_email);
 239                 icalcomponent_add_property(vevent,
 240                         icalproperty_new_organizer(organizer_string)
 241                 );
 242         }
 243
 244         /* Determine who is the organizer of this event.
 245          * We need to determine "me" or "not me."
 246          */
 247         organizer = icalcomponent_get_first_property(vevent,
 248                                                 ICAL_ORGANIZER_PROPERTY);
 249         if (organizer != NULL) {
 250                 strcpy(organizer_string, icalproperty_get_organizer(organizer));
 251                 if (!strncasecmp(organizer_string, "MAILTO:", 7)) {
 252                         strcpy(organizer_string, &organizer_string[7]);
 253                         striplt(organizer_string);
 254                         lprintf(9, "ISME %s\n", organizer_string);
 255                         serv_printf("ISME %s", organizer_string);
 256                         serv_gets(buf);
 257                         lprintf(9, "%s\n", buf);
 258                         if (buf[0] == '2') {
 259                                 organizer_is_me = 1;
 260                         }
 261                 }
 262         }
 263
 264         wprintf("<TR><TD><B>Organizer</B></TD><TD>");
 265         escputs(organizer_string);
 266         if (organizer_is_me) {
 267                 wprintf(" <FONT SIZE=-1><I>"
 268                         "(you are the organizer)</I></FONT>\n");
 269         }
 270
 271         /*
 272          * Transmit the organizer as a hidden field.   We don't want the user
 273          * to be able to change it, but we do want it fed back to the server,
 274          * especially if this is a new event and there is no organizer already
 275          * in the calendar object.
 276          */
 277         wprintf("<INPUT TYPE=\"hidden\" NAME=\"organizer\" VALUE=\"");
 278         escputs(organizer_string);
 279         wprintf("\">");
 280
 281         wprintf("</TD></TR>\n");
 282
 283         /* Transparency */
 284         wprintf("<TR><TD><B>Show time as:</B></TD><TD>");
 285
 286         p = icalcomponent_get_first_property(vevent, ICAL_TRANSP_PROPERTY);
 287         if (p == NULL) {
 288                 /* No transparency found.  Default to opaque (busy). */
 289                 p = icalproperty_new_transp(ICAL_TRANSP_OPAQUE);
 290                 if (p != NULL) {
 291                         icalcomponent_add_property(vevent, p);
 292                 }
 293         }
 294         if (p != NULL) {
 295                 v = icalproperty_get_value(p);
 296         }
 297         else {
 298                 v = NULL;
 299         }
 300
 301         wprintf("<INPUT TYPE=\"radio\" NAME=\"transp\" VALUE=\"transparent\"");
 302         if (v != NULL) if (icalvalue_get_transp(v) == ICAL_TRANSP_TRANSPARENT)
 303                 wprintf(" CHECKED");
 304         wprintf(">Free&nbsp;&nbsp;");
 305
 306         wprintf("<INPUT TYPE=\"radio\" NAME=\"transp\" VALUE=\"opaque\"");
 307         if (v != NULL) if (icalvalue_get_transp(v) == ICAL_TRANSP_OPAQUE)
 308                 wprintf(" CHECKED");
 309         wprintf(">Busy");
 310
 311         wprintf("</TD></TR>\n");
 312
 313         /* Attendees */
 314         wprintf("<TR><TD><B>Attendees</B><BR>"
 315                 "<FONT SIZE=-2>(Separate multiple attendees with commas)"
 316                 "</FONT></TD><TD>"
 317                 "<TEXTAREA %s NAME=\"attendees\" wrap=soft "
 318                 "ROWS=3 COLS=80 WIDTH=80>\n",
 319                 (organizer_is_me ? "" : "DISABLED ")
 320         );
 321         i = 0;
 322         for (attendee = icalcomponent_get_first_property(vevent, ICAL_ATTENDEE_PROPERTY); attendee != NULL; attendee = icalcomponent_get_next_property(vevent, ICAL_ATTENDEE_PROPERTY)) {
 323                 strcpy(attendee_string, icalproperty_get_attendee(attendee));
 324                 if (!strncasecmp(attendee_string, "MAILTO:", 7)) {
 325
 326                         /* screen name or email address */
 327                         strcpy(attendee_string, &attendee_string[7]);
 328                         striplt(attendee_string);
 329                         if (i++) wprintf(", ");
 330                         escputs(attendee_string);
 331                         wprintf(" ");
 332
 333                         /* participant status */
 334                         partstat_as_string(buf, attendee);
 335                         escputs(buf);
 336                 }
 337         }
 338         wprintf("</TEXTAREA></TD></TR>\n");
 339
 340         /* Done with properties. */
 341         wprintf("</TABLE>\n<CENTER>"
 342                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Save\">"
 343                 "&nbsp;&nbsp;"
 344                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Delete\">\n"
 345                 "&nbsp;&nbsp;"
 346                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Cancel\">\n"
 347                 "</CENTER>\n"
 348         );
 349
 350         wprintf("</FORM>\n");
 351
 352         wprintf("<SCRIPT language=\"javascript\">
 353                 <!--
 354
 355                         if (document.EventForm.alldayevent.checked) {
 356                                 document.EventForm.dtstart_hour.value='0';
 357                                 document.EventForm.dtstart_hour.disabled = true;
 358                                 document.EventForm.dtstart_minute.value='0';
 359                                 document.EventForm.dtstart_minute.disabled = true;
 360                                 document.EventForm.dtend_hour.value='0';
 361                                 document.EventForm.dtend_hour.disabled = true;
 362                                 document.EventForm.dtend_minute.value='0';
 363                                 document.EventForm.dtend_minute.disabled = true;
 364                                 document.EventForm.dtend_month.disabled = true;
 365                                 document.EventForm.dtend_day.disabled = true;
 366                                 document.EventForm.dtend_year.disabled = true;
 367                         }
 368                         else {
 369                                 document.EventForm.dtstart_hour.disabled = false;
 370                                 document.EventForm.dtstart_minute.disabled = false;
 371                                 document.EventForm.dtend_hour.disabled = false;
 372                                 document.EventForm.dtend_minute.disabled = false;
 373                                 document.EventForm.dtend_month.disabled = false;
 374                                 document.EventForm.dtend_day.disabled = false;
 375                                 document.EventForm.dtend_year.disabled = false;
 376                         }
 377                 //-->
 378                 </SCRIPT>
 379         ");
 380
 381         wDumpContent(1);
 382
 383         if (created_new_vevent) {
 384                 icalcomponent_free(vevent);
 385         }
 386 }
 387
 388 /*
 389  * Save an edited event
 390  */
 391 void save_individual_event(icalcomponent *supplied_vevent, long msgnum) {
 392         char buf[SIZ];
 393         icalproperty *prop;
 394         icalcomponent *vevent;
 395         int created_new_vevent = 0;
 396         int all_day_event = 0;
 397         struct icaltimetype event_start;
 398         icalproperty *attendee = NULL;
 399         char attendee_string[SIZ];
 400         int i;
 401         int foundit;
 402         char form_attendees[SIZ];
 403         char organizer_string[SIZ];
 404         int sequence = 0;
 405         enum icalproperty_transp formtransp = ICAL_TRANSP_NONE;
 406
 407         if (supplied_vevent != NULL) {
 408                 vevent = supplied_vevent;
 409         }
 410         else {
 411                 vevent = icalcomponent_new(ICAL_VEVENT_COMPONENT);
 412                 created_new_vevent = 1;
 413         }
 414
 415         if (!strcasecmp(bstr("sc"), "Save")) {
 416
 417                 /* Replace values in the component with ones from the form */
 418
 419                 while (prop = icalcomponent_get_first_property(vevent,
 420                       ICAL_SUMMARY_PROPERTY), prop != NULL) {
 421                         icalcomponent_remove_property(vevent, prop);
 422                         icalproperty_free(prop);
 423                 }
 424                 icalcomponent_add_property(vevent,
 425                         icalproperty_new_summary(bstr("summary")));
 426
 427                 while (prop = icalcomponent_get_first_property(vevent,
 428                       ICAL_LOCATION_PROPERTY), prop != NULL) {
 429                         icalcomponent_remove_property(vevent, prop);
 430                         icalproperty_free(prop);
 431                 }
 432                 icalcomponent_add_property(vevent,
 433                         icalproperty_new_location(bstr("location")));
 434
 435                 while (prop = icalcomponent_get_first_property(vevent,
 436                       ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 437                         icalcomponent_remove_property(vevent, prop);
 438                         icalproperty_free(prop);
 439                 }
 440                 icalcomponent_add_property(vevent,
 441                         icalproperty_new_description(bstr("description")));
 442
 443                 while (prop = icalcomponent_get_first_property(vevent,
 444                       ICAL_DTSTART_PROPERTY), prop != NULL) {
 445                         icalcomponent_remove_property(vevent, prop);
 446                         icalproperty_free(prop);
 447                 }
 448
 449                 if (!strcmp(bstr("alldayevent"), "yes")) {
 450                         all_day_event = 1;
 451                 }
 452                 else {
 453                         all_day_event = 0;
 454                 }
 455
 456                 event_start = icaltime_from_webform("dtstart");
 457                 if (all_day_event) {
 458                         event_start.is_date = 1;
 459                         event_start.hour = 0;
 460                         event_start.minute = 0;
 461                         event_start.second = 0;
 462                 }
 463
 464
 465                 /* The following odd-looking snippet of code looks like it
 466                  * takes some unnecessary steps.  It is done this way because
 467                  * libical incorrectly turns an "all day event" into a normal
 468                  * event starting at midnight (i.e. it serializes as date/time
 469                  * instead of just date) unless icalvalue_new_date() is used.
 470                  * So we force it, if this is an all day event.
 471                  */
 472                 prop = icalproperty_new_dtstart(event_start);
 473                 if (all_day_event) {
 474                         icalproperty_set_value(prop,
 475                                 icalvalue_new_date(event_start)
 476                         );
 477                 }
 478
 479                 if (prop) icalcomponent_add_property(vevent, prop);
 480                 else icalproperty_free(prop);
 481
 482                 while (prop = icalcomponent_get_first_property(vevent,
 483                       ICAL_DTEND_PROPERTY), prop != NULL) {
 484                         icalcomponent_remove_property(vevent, prop);
 485                         icalproperty_free(prop);
 486                 }
 487                 while (prop = icalcomponent_get_first_property(vevent,
 488                       ICAL_DURATION_PROPERTY), prop != NULL) {
 489                         icalcomponent_remove_property(vevent, prop);
 490                         icalproperty_free(prop);
 491                 }
 492
 493                 if (all_day_event == 0) {
 494                         icalcomponent_add_property(vevent,
 495                                 icalproperty_new_dtend(icaltime_normalize(
 496                                         icaltime_from_webform("dtend"))
 497                                 )
 498                         );
 499                 }
 500
 501                 /* See if transparency is indicated */
 502                 if (strlen(bstr("transp")) > 0) {
 503                         lprintf(9, "FORM VALUE: <%s>\n", bstr("transp"));
 504                         if (!strcasecmp(bstr("transp"), "opaque")) {
 505                                 formtransp = ICAL_TRANSP_OPAQUE;
 506                                 lprintf(9, "setting to opaque\n");
 507                         }
 508                         else if (!strcasecmp(bstr("transp"), "transparent")) {
 509                                 formtransp = ICAL_TRANSP_TRANSPARENT;
 510                                 lprintf(9, "setting to transparent\n");
 511                         }
 512
 513                         while (prop = icalcomponent_get_first_property(vevent, ICAL_TRANSP_PROPERTY),
 514                               (prop != NULL)) {
 515                                 lprintf(9, "removing existing property\n");
 516                                 icalcomponent_remove_property(vevent, prop);
 517                                 icalproperty_free(prop);
 518                         }
 519
 520                         lprintf(9, "adding new property\n");
 521                         icalcomponent_add_property(vevent, icalproperty_new_transp(formtransp));
 522                 }
 523
 524                 /* Give this event a UID if it doesn't have one. */
 525                 if (icalcomponent_get_first_property(vevent,
 526                    ICAL_UID_PROPERTY) == NULL) {
 527                         generate_new_uid(buf);
 528                         icalcomponent_add_property(vevent,
 529                                 icalproperty_new_uid(buf)
 530                         );
 531                 }
 532
 533                 /* Increment the sequence ID */
 534                 while (prop = icalcomponent_get_first_property(vevent,
 535                       ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 536                         i = icalproperty_get_sequence(prop);
 537                         if (i > sequence) sequence = i;
 538                         icalcomponent_remove_property(vevent, prop);
 539                         icalproperty_free(prop);
 540                 }
 541                 ++sequence;
 542                 icalcomponent_add_property(vevent,
 543                         icalproperty_new_sequence(sequence)
 544                 );
 545
 546                 /* Set the organizer, only if one does not already exist *and*
 547                  * the form is supplying one
 548                  */
 549                 strcpy(buf, bstr("organizer"));
 550                 if ( (icalcomponent_get_first_property(vevent,
 551                    ICAL_ORGANIZER_PROPERTY) == NULL)
 552                    && (strlen(buf) > 0) ) {
 553
 554                         /* set new organizer */
 555                         sprintf(organizer_string, "MAILTO:%s", buf);
 556                         icalcomponent_add_property(vevent,
 557                                 icalproperty_new_organizer(organizer_string)
 558                         );
 559
 560                 }
 561
 562                 /*
 563                  * Add any new attendees listed in the web form
 564                  */
 565
 566                 /* First, strip out the parenthesized partstats.  */
 567                 strcpy(form_attendees, bstr("attendees"));
 568                 stripout(form_attendees, '(', ')');
 569
 570                 /* Now iterate! */
 571                 for (i=0; i<num_tokens(form_attendees, ','); ++i) {
 572                         extract_token(buf, form_attendees, i, ',');
 573                         striplt(buf);
 574                         if (strlen(buf) > 0) {
 575                                 lprintf(9, "Attendee: <%s>\n", buf);
 576                                 sprintf(attendee_string, "MAILTO:%s", buf);
 577                                 foundit = 0;
 578
 579                                 for (attendee = icalcomponent_get_first_property(vevent, ICAL_ATTENDEE_PROPERTY); attendee != NULL; attendee = icalcomponent_get_next_property(vevent, ICAL_ATTENDEE_PROPERTY)) {
 580                                         if (!strcasecmp(attendee_string,
 581                                            icalproperty_get_attendee(attendee)))
 582                                                 ++foundit;
 583                                 }
 584
 585
 586                                 if (foundit == 0) {
 587                                         icalcomponent_add_property(vevent,
 588                                                 icalproperty_new_attendee(attendee_string)
 589                                         );
 590                                 }
 591                         }
 592                 }
 593
 594                 /*
 595                  * Remove any attendees *not* listed in the web form
 596                  */
 597 STARTOVER:
 598                 for (attendee = icalcomponent_get_first_property(vevent, ICAL_ATTENDEE_PROPERTY); attendee != NULL; attendee = icalcomponent_get_next_property(vevent, ICAL_ATTENDEE_PROPERTY)) {
 599                         strcpy(attendee_string, icalproperty_get_attendee(attendee));
 600                         if (!strncasecmp(attendee_string, "MAILTO:", 7)) {
 601                                 strcpy(attendee_string, &attendee_string[7]);
 602                                 striplt(attendee_string);
 603                                 foundit = 0;
 604                                 for (i=0; i<num_tokens(form_attendees, ','); ++i) {
 605                                         extract_token(buf, form_attendees, i, ',');
 606                                         striplt(buf);
 607                                         if (!strcasecmp(buf, attendee_string)) ++foundit;
 608                                 }
 609                                 if (foundit == 0) {
 610                                         icalcomponent_remove_property(vevent, attendee);
 611                                         icalproperty_free(attendee);
 612                                         goto STARTOVER;
 613                                 }
 614                         }
 615                 }
 616
 617                 /*
 618                  * Serialize it and save it to the message base
 619                  */
 620                 serv_puts("ENT0 1|||4");
 621                 serv_gets(buf);
 622                 if (buf[0] == '4') {
 623                         serv_puts("Content-type: text/calendar");
 624                         serv_puts("");
 625                         serv_puts(icalcomponent_as_ical_string(vevent));
 626                         serv_puts("000");
 627                 }
 628         }
 629
 630         /*
 631          * If the user clicked 'Delete' then delete it.
 632          */
 633         if ( (!strcasecmp(bstr("sc"), "Delete")) && (msgnum > 0L) ) {
 634                 serv_printf("DELE %ld", atol(bstr("msgnum")));
 635                 serv_gets(buf);
 636         }
 637
 638         if (created_new_vevent) {
 639                 icalcomponent_free(vevent);
 640         }
 641
 642         /* Go back to the event list */
 643         readloop("readfwd");
 644 }
 645
 646
 647 #endif /* WEBCIT_WITH_CALENDAR_SERVICE */