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 organizer_is_me = 0;
  50         int i;
  51         int sequence = 0;
  52
  53         now = time(NULL);
  54         strcpy(organizer_string, "");
  55         strcpy(attendee_string, "");
  56
  57         if (supplied_vevent != NULL) {
  58                 vevent = supplied_vevent;
  59                 /* If we're looking at a fully encapsulated VCALENDAR
  60                  * rather than a VEVENT component, attempt to use the first
  61                  * relevant VEVENT subcomponent.  If there is none, the
  62                  * NULL returned by icalcomponent_get_first_component() will
  63                  * tell the next iteration of this function to create a
  64                  * new one.
  65                  */
  66                 if (icalcomponent_isa(vevent) == ICAL_VCALENDAR_COMPONENT) {
  67                         display_edit_individual_event(
  68                                 icalcomponent_get_first_component(
  69                                         vevent, ICAL_VEVENT_COMPONENT
  70                                 ), msgnum
  71                         );
  72                         return;
  73                 }
  74         }
  75         else {
  76                 vevent = icalcomponent_new(ICAL_VEVENT_COMPONENT);
  77                 created_new_vevent = 1;
  78         }
  79
  80         /* Learn the sequence */
  81         p = icalcomponent_get_first_property(vevent, ICAL_SEQUENCE_PROPERTY);
  82         if (p != NULL) {
  83                 sequence = icalproperty_get_sequence(p);
  84         }
  85
  86         /* Begin output */
  87         output_headers(1, 1, 2, 0, 0, 0, 0);
  88         wprintf("<div id=\"banner\">\n"
  89                 "<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR><TD>"
  90                 "<SPAN CLASS=\"titlebar\">Add or edit an event</SPAN>"
  91                 "</TD></TR></TABLE>\n"
  92                 "</div>\n<div id=\"content\">\n"
  93         );
  94
  95         wprintf("<center><table border=0 width=99%% bgcolor=\"#ffffff\"><tr><td>\n");
  96
  97         /************************************************************
  98          * Uncomment this to see the UID in calendar events for debugging
  99         wprintf("UID == ");
 100         p = icalcomponent_get_first_property(vevent, ICAL_UID_PROPERTY);
 101         if (p != NULL) {
 102                 escputs((char *)icalproperty_get_comment(p));
 103         }
 104         wprintf("<br />\n");
 105         wprintf("SEQUENCE == %d<br />\n", sequence);
 106         *************************************************************/
 107
 108         wprintf("<FORM NAME=\"EventForm\" METHOD=\"POST\" ACTION=\"/save_event\">\n");
 109
 110         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 111                 msgnum);
 112         wprintf("<INPUT TYPE=\"hidden\" NAME=\"calview\" VALUE=\"%s\">\n",
 113                 bstr("calview"));
 114         wprintf("<INPUT TYPE=\"hidden\" NAME=\"year\" VALUE=\"%s\">\n",
 115                 bstr("year"));
 116         wprintf("<INPUT TYPE=\"hidden\" NAME=\"month\" VALUE=\"%s\">\n",
 117                 bstr("month"));
 118         wprintf("<INPUT TYPE=\"hidden\" NAME=\"day\" VALUE=\"%s\">\n",
 119                 bstr("day"));
 120
 121         /* Put it in a borderless table so it lines up nicely */
 122         wprintf("<TABLE border=0 width=100%%>\n");
 123
 124         wprintf("<TR><TD><B>Summary</B></TD><TD>\n"
 125                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 126                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 127         p = icalcomponent_get_first_property(vevent, ICAL_SUMMARY_PROPERTY);
 128         if (p != NULL) {
 129                 escputs((char *)icalproperty_get_comment(p));
 130         }
 131         wprintf("\"></TD></TR>\n");
 132
 133         wprintf("<TR><TD><B>Location</B></TD><TD>\n"
 134                 "<INPUT TYPE=\"text\" NAME=\"location\" "
 135                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 136         p = icalcomponent_get_first_property(vevent, ICAL_LOCATION_PROPERTY);
 137         if (p != NULL) {
 138                 escputs((char *)icalproperty_get_comment(p));
 139         }
 140         wprintf("\"></TD></TR>\n");
 141
 142         wprintf("<TR><TD><B>Start</B></TD><TD>\n");
 143         p = icalcomponent_get_first_property(vevent, ICAL_DTSTART_PROPERTY);
 144         if (p != NULL) {
 145                 t_start = icalproperty_get_dtstart(p);
 146                 if (t_start.is_date) {
 147                         t_start.hour = 0;
 148                         t_start.minute = 0;
 149                         t_start.second = 0;
 150                 }
 151         }
 152         else {
 153                 localtime_r(&now, &tm_now);
 154                 if (strlen(bstr("year")) > 0) {
 155                         tm_now.tm_year = atoi(bstr("year")) - 1900;
 156                         tm_now.tm_mon = atoi(bstr("month")) - 1;
 157                         tm_now.tm_mday = atoi(bstr("day"));
 158                 }
 159                 if (strlen(bstr("hour")) > 0) {
 160                         tm_now.tm_hour = atoi(bstr("hour"));
 161                         tm_now.tm_min = atoi(bstr("minute"));
 162                         tm_now.tm_sec = 0;
 163                 }
 164                 else {
 165                         tm_now.tm_hour = 9;
 166                         tm_now.tm_min = 0;
 167                         tm_now.tm_sec = 0;
 168                 }
 169
 170                 t_start = icaltime_from_timet_with_zone(
 171                         mktime(&tm_now),
 172                         ((!strcasecmp(bstr("alldayevent"), "yes")) ? 1 : 0),
 173                         icaltimezone_get_utc_timezone()
 174                 );
 175                 t_start.is_utc = 1;
 176
 177         }
 178         display_icaltimetype_as_webform(&t_start, "dtstart");
 179
 180         wprintf("<INPUT TYPE=\"checkbox\" NAME=\"alldayevent\" "
 181                 "VALUE=\"yes\" onClick=\""
 182 ""
 183 "                       if (this.checked) { "
 184 "                               this.form.dtstart_hour.value='0'; "
 185 "                               this.form.dtstart_hour.disabled = true; "
 186 "                               this.form.dtstart_minute.value='0'; "
 187 "                               this.form.dtstart_minute.disabled = true; "
 188 "                               this.form.dtend_hour.value='0'; "
 189 "                               this.form.dtend_hour.disabled = true; "
 190 "                               this.form.dtend_minute.value='0'; "
 191 "                               this.form.dtend_minute.disabled = true; "
 192 "                               this.form.dtend_month.disabled = true; "
 193 "                               this.form.dtend_day.disabled = true; "
 194 "                               this.form.dtend_year.disabled = true; "
 195 "                       } "
 196 "                       else { "
 197 "                               this.form.dtstart_hour.disabled = false; "
 198 "                               this.form.dtstart_minute.disabled = false; "
 199 "                               this.form.dtend_hour.disabled = false; "
 200 "                               this.form.dtend_minute.disabled = false; "
 201 "                               this.form.dtend_month.disabled = false; "
 202 "                               this.form.dtend_day.disabled = false; "
 203 "                               this.form.dtend_year.disabled = false; "
 204 "                       } "
 205 " "
 206 " "
 207 "               \" %s >All day event",
 208                 (t_start.is_date ? "CHECKED" : "" )
 209         );
 210
 211         wprintf("</TD></TR>\n");
 212
 213         /* If this is an all-day-event, set the end time to be identical to
 214          * the start time (the hour/minute/second will be set to midnight).
 215          * Otherwise extract or create it.
 216          */
 217         wprintf("<TR><TD><B>End</B></TD><TD>\n");
 218         if (t_start.is_date) {
 219                 t_end = t_start;
 220         }
 221         else {
 222                 p = icalcomponent_get_first_property(vevent,
 223                                                         ICAL_DTEND_PROPERTY);
 224                 if (p != NULL) {
 225                         t_end = icalproperty_get_dtend(p);
 226                 }
 227                 else {
 228                         /* If this is not an all-day event and there is no
 229                          * end time specified, make the default one hour
 230                          * from the start time.
 231                          */
 232                         t_end = t_start;
 233                         t_end.hour += 1;
 234                         t_end.second = 0;
 235                         t_end = icaltime_normalize(t_end);
 236                         /* t_end = icaltime_from_timet(now, 0); */
 237                 }
 238         }
 239         display_icaltimetype_as_webform(&t_end, "dtend");
 240         wprintf("</TD></TR>\n");
 241
 242         wprintf("<TR><TD><B>Notes</B></TD><TD>\n"
 243                 "<TEXTAREA NAME=\"description\" wrap=soft "
 244                 "ROWS=5 COLS=80 WIDTH=80>\n"
 245         );
 246         p = icalcomponent_get_first_property(vevent, ICAL_DESCRIPTION_PROPERTY);
 247         if (p != NULL) {
 248                 escputs((char *)icalproperty_get_comment(p));
 249         }
 250         wprintf("</TEXTAREA></TD></TR>");
 251
 252         /* For a new event, the user creating the event should be the
 253          * organizer.  Set this field accordingly.
 254          */
 255         if (icalcomponent_get_first_property(vevent, ICAL_ORGANIZER_PROPERTY)
 256            == NULL) {
 257                 sprintf(organizer_string, "MAILTO:%s", WC->cs_inet_email);
 258                 icalcomponent_add_property(vevent,
 259                         icalproperty_new_organizer(organizer_string)
 260                 );
 261         }
 262
 263         /* Determine who is the organizer of this event.
 264          * We need to determine "me" or "not me."
 265          */
 266         organizer = icalcomponent_get_first_property(vevent,
 267                                                 ICAL_ORGANIZER_PROPERTY);
 268         if (organizer != NULL) {
 269                 strcpy(organizer_string, icalproperty_get_organizer(organizer));
 270                 if (!strncasecmp(organizer_string, "MAILTO:", 7)) {
 271                         strcpy(organizer_string, &organizer_string[7]);
 272                         striplt(organizer_string);
 273                         lprintf(9, "ISME %s\n", organizer_string);
 274                         serv_printf("ISME %s", organizer_string);
 275                         serv_gets(buf);
 276                         lprintf(9, "%s\n", buf);
 277                         if (buf[0] == '2') {
 278                                 organizer_is_me = 1;
 279                         }
 280                 }
 281         }
 282
 283         wprintf("<TR><TD><B>Organizer</B></TD><TD>");
 284         escputs(organizer_string);
 285         if (organizer_is_me) {
 286                 wprintf(" <FONT SIZE=-1><I>"
 287                         "(you are the organizer)</I></FONT>\n");
 288         }
 289
 290         /*
 291          * Transmit the organizer as a hidden field.   We don't want the user
 292          * to be able to change it, but we do want it fed back to the server,
 293          * especially if this is a new event and there is no organizer already
 294          * in the calendar object.
 295          */
 296         wprintf("<INPUT TYPE=\"hidden\" NAME=\"organizer\" VALUE=\"");
 297         escputs(organizer_string);
 298         wprintf("\">");
 299
 300         wprintf("</TD></TR>\n");
 301
 302         /* Transparency */
 303         wprintf("<TR><TD><B>Show time as:</B></TD><TD>");
 304
 305         p = icalcomponent_get_first_property(vevent, ICAL_TRANSP_PROPERTY);
 306         if (p == NULL) {
 307                 /* No transparency found.  Default to opaque (busy). */
 308                 p = icalproperty_new_transp(ICAL_TRANSP_OPAQUE);
 309                 if (p != NULL) {
 310                         icalcomponent_add_property(vevent, p);
 311                 }
 312         }
 313         if (p != NULL) {
 314                 v = icalproperty_get_value(p);
 315         }
 316         else {
 317                 v = NULL;
 318         }
 319
 320         wprintf("<INPUT TYPE=\"radio\" NAME=\"transp\" VALUE=\"transparent\"");
 321         if (v != NULL) if (icalvalue_get_transp(v) == ICAL_TRANSP_TRANSPARENT)
 322                 wprintf(" CHECKED");
 323         wprintf(">Free&nbsp;&nbsp;");
 324
 325         wprintf("<INPUT TYPE=\"radio\" NAME=\"transp\" VALUE=\"opaque\"");
 326         if (v != NULL) if (icalvalue_get_transp(v) == ICAL_TRANSP_OPAQUE)
 327                 wprintf(" CHECKED");
 328         wprintf(">Busy");
 329
 330         wprintf("</TD></TR>\n");
 331
 332         /* Attendees */
 333         wprintf("<TR><TD><B>Attendees</B><br />"
 334                 "<FONT SIZE=-2>(One per line)"
 335                 "</FONT></TD><TD>"
 336                 "<TEXTAREA %s NAME=\"attendees\" wrap=soft "
 337                 "ROWS=3 COLS=80 WIDTH=80>\n",
 338                 (organizer_is_me ? "" : "DISABLED ")
 339         );
 340         i = 0;
 341         for (attendee = icalcomponent_get_first_property(vevent, ICAL_ATTENDEE_PROPERTY);
 342             attendee != NULL;
 343             attendee = icalcomponent_get_next_property(vevent, ICAL_ATTENDEE_PROPERTY)) {
 344                 strcpy(attendee_string, icalproperty_get_attendee(attendee));
 345                 if (!strncasecmp(attendee_string, "MAILTO:", 7)) {
 346
 347                         /* screen name or email address */
 348                         strcpy(attendee_string, &attendee_string[7]);
 349                         striplt(attendee_string);
 350                         if (i++) wprintf("\n");
 351                         escputs(attendee_string);
 352                         wprintf(" ");
 353
 354                         /* participant status */
 355                         partstat_as_string(buf, attendee);
 356                         escputs(buf);
 357                 }
 358         }
 359         wprintf("</TEXTAREA></TD></TR>\n");
 360
 361         /* Done with properties. */
 362         wprintf("</TABLE>\n<CENTER>"
 363                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Save\">"
 364                 "&nbsp;&nbsp;"
 365                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Delete\">\n"
 366                 "&nbsp;&nbsp;"
 367                 "<INPUT TYPE=\"submit\" NAME=\"sc\" "
 368                                 "VALUE=\"Check attendee availability\">\n"
 369                 "&nbsp;&nbsp;"
 370                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Cancel\">\n"
 371                 "</CENTER>\n"
 372         );
 373
 374         wprintf("</FORM>\n");
 375
 376         wprintf("<script type=\"text/javascript\">"
 377                 "<!--"
 378                         "if (document.EventForm.alldayevent.checked) {"
 379                                 "document.EventForm.dtstart_hour.value='0';"
 380                                 "document.EventForm.dtstart_hour.disabled = true;"
 381                                 "document.EventForm.dtstart_minute.value='0';"
 382                                 "document.EventForm.dtstart_minute.disabled = true;"
 383                                 "document.EventForm.dtend_hour.value='0';"
 384                                 "document.EventForm.dtend_hour.disabled = true;"
 385                                 "document.EventForm.dtend_minute.value='0';"
 386                                 "document.EventForm.dtend_minute.disabled = true;"
 387                                 "document.EventForm.dtend_month.disabled = true;"
 388                                 "document.EventForm.dtend_day.disabled = true;"
 389                                 "document.EventForm.dtend_year.disabled = true;"
 390                         "}"
 391                         "else {"
 392                                 "document.EventForm.dtstart_hour.disabled = false;"
 393                                 "document.EventForm.dtstart_minute.disabled = false;"
 394                                 "document.EventForm.dtend_hour.disabled = false;"
 395                                 "document.EventForm.dtend_minute.disabled = false;"
 396                                 "document.EventForm.dtend_month.disabled = false;"
 397                                 "document.EventForm.dtend_day.disabled = false;"
 398                                 "document.EventForm.dtend_year.disabled = false;"
 399                         "}"
 400                 "//-->"
 401                 "</script>\n"
 402         );
 403
 404         wprintf("</td></tr></table></center>\n");
 405         wDumpContent(1);
 406
 407         if (created_new_vevent) {
 408                 icalcomponent_free(vevent);
 409         }
 410 }
 411
 412 /*
 413  * Save an edited event
 414  *
 415  */
 416 void save_individual_event(icalcomponent *supplied_vevent, long msgnum) {
 417         char buf[SIZ];
 418         icalproperty *prop;
 419         icalcomponent *vevent, *encaps;
 420         int created_new_vevent = 0;
 421         int all_day_event = 0;
 422         struct icaltimetype event_start;
 423         icalproperty *attendee = NULL;
 424         char attendee_string[SIZ];
 425         int i;
 426         int foundit;
 427         char form_attendees[SIZ];
 428         char organizer_string[SIZ];
 429         int sequence = 0;
 430         enum icalproperty_transp formtransp = ICAL_TRANSP_NONE;
 431
 432         if (supplied_vevent != NULL) {
 433                 vevent = supplied_vevent;
 434                 /* If we're looking at a fully encapsulated VCALENDAR
 435                  * rather than a VEVENT component, attempt to use the first
 436                  * relevant VEVENT subcomponent.  If there is none, the
 437                  * NULL returned by icalcomponent_get_first_component() will
 438                  * tell the next iteration of this function to create a
 439                  * new one.
 440                  */
 441                 if (icalcomponent_isa(vevent) == ICAL_VCALENDAR_COMPONENT) {
 442                         save_individual_event(
 443                                 icalcomponent_get_first_component(
 444                                         vevent, ICAL_VEVENT_COMPONENT
 445                                 ), msgnum
 446                         );
 447                         return;
 448                 }
 449         }
 450         else {
 451                 vevent = icalcomponent_new(ICAL_VEVENT_COMPONENT);
 452                 created_new_vevent = 1;
 453         }
 454
 455         if ( (!strcasecmp(bstr("sc"), "Save"))
 456            || (!strcasecmp(bstr("sc"), "Check attendee availability")) ) {
 457
 458                 /* Replace values in the component with ones from the form */
 459
 460                 while (prop = icalcomponent_get_first_property(vevent,
 461                       ICAL_SUMMARY_PROPERTY), prop != NULL) {
 462                         icalcomponent_remove_property(vevent, prop);
 463                         icalproperty_free(prop);
 464                 }
 465                 icalcomponent_add_property(vevent,
 466                         icalproperty_new_summary(bstr("summary")));
 467
 468                 while (prop = icalcomponent_get_first_property(vevent,
 469                       ICAL_LOCATION_PROPERTY), prop != NULL) {
 470                         icalcomponent_remove_property(vevent, prop);
 471                         icalproperty_free(prop);
 472                 }
 473                 icalcomponent_add_property(vevent,
 474                         icalproperty_new_location(bstr("location")));
 475
 476                 while (prop = icalcomponent_get_first_property(vevent,
 477                       ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 478                         icalcomponent_remove_property(vevent, prop);
 479                         icalproperty_free(prop);
 480                 }
 481                 icalcomponent_add_property(vevent,
 482                         icalproperty_new_description(bstr("description")));
 483
 484                 while (prop = icalcomponent_get_first_property(vevent,
 485                       ICAL_DTSTART_PROPERTY), prop != NULL) {
 486                         icalcomponent_remove_property(vevent, prop);
 487                         icalproperty_free(prop);
 488                 }
 489
 490                 if (!strcmp(bstr("alldayevent"), "yes")) {
 491                         all_day_event = 1;
 492                 }
 493                 else {
 494                         all_day_event = 0;
 495                 }
 496
 497                 event_start = icaltime_from_webform("dtstart");
 498                 if (all_day_event) {
 499                         event_start.is_date = 1;
 500                         event_start.hour = 0;
 501                         event_start.minute = 0;
 502                         event_start.second = 0;
 503                 }
 504
 505
 506                 /* The following odd-looking snippet of code looks like it
 507                  * takes some unnecessary steps.  It is done this way because
 508                  * libical incorrectly turns an "all day event" into a normal
 509                  * event starting at midnight (i.e. it serializes as date/time
 510                  * instead of just date) unless icalvalue_new_date() is used.
 511                  * So we force it, if this is an all day event.
 512                  */
 513                 prop = icalproperty_new_dtstart(event_start);
 514                 if (all_day_event) {
 515                         icalproperty_set_value(prop,
 516                                 icalvalue_new_date(event_start)
 517                         );
 518                 }
 519
 520                 if (prop) icalcomponent_add_property(vevent, prop);
 521                 else icalproperty_free(prop);
 522
 523                 while (prop = icalcomponent_get_first_property(vevent,
 524                       ICAL_DTEND_PROPERTY), prop != NULL) {
 525                         icalcomponent_remove_property(vevent, prop);
 526                         icalproperty_free(prop);
 527                 }
 528                 while (prop = icalcomponent_get_first_property(vevent,
 529                       ICAL_DURATION_PROPERTY), prop != NULL) {
 530                         icalcomponent_remove_property(vevent, prop);
 531                         icalproperty_free(prop);
 532                 }
 533
 534                 if (all_day_event == 0) {
 535                         icalcomponent_add_property(vevent,
 536                                 icalproperty_new_dtend(icaltime_normalize(
 537                                         icaltime_from_webform("dtend"))
 538                                 )
 539                         );
 540                 }
 541
 542                 /* See if transparency is indicated */
 543                 if (strlen(bstr("transp")) > 0) {
 544                         if (!strcasecmp(bstr("transp"), "opaque")) {
 545                                 formtransp = ICAL_TRANSP_OPAQUE;
 546                         }
 547                         else if (!strcasecmp(bstr("transp"), "transparent")) {
 548                                 formtransp = ICAL_TRANSP_TRANSPARENT;
 549                         }
 550
 551                         while (prop = icalcomponent_get_first_property(vevent, ICAL_TRANSP_PROPERTY),
 552                               (prop != NULL)) {
 553                                 icalcomponent_remove_property(vevent, prop);
 554                                 icalproperty_free(prop);
 555                         }
 556
 557                         lprintf(9, "adding new property...\n");
 558                         icalcomponent_add_property(vevent, icalproperty_new_transp(formtransp));
 559                         lprintf(9, "...added it.\n");
 560                 }
 561
 562                 /* Give this event a UID if it doesn't have one. */
 563                 lprintf(9, "Give this event a UID if it doesn't have one.\n");
 564                 if (icalcomponent_get_first_property(vevent,
 565                    ICAL_UID_PROPERTY) == NULL) {
 566                         generate_uuid(buf);
 567                         icalcomponent_add_property(vevent,
 568                                 icalproperty_new_uid(buf)
 569                         );
 570                 }
 571
 572                 /* Increment the sequence ID */
 573                 lprintf(9, "Increment the sequence ID\n");
 574                 while (prop = icalcomponent_get_first_property(vevent,
 575                       ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 576                         i = icalproperty_get_sequence(prop);
 577                         lprintf(9, "Sequence was %d\n", i);
 578                         if (i > sequence) sequence = i;
 579                         icalcomponent_remove_property(vevent, prop);
 580                         icalproperty_free(prop);
 581                 }
 582                 ++sequence;
 583                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 584                 icalcomponent_add_property(vevent,
 585                         icalproperty_new_sequence(sequence)
 586                 );
 587
 588                 /* Set the organizer, only if one does not already exist *and*
 589                  * the form is supplying one
 590                  */
 591                 lprintf(9, "Setting the organizer...\n");
 592                 strcpy(buf, bstr("organizer"));
 593                 if ( (icalcomponent_get_first_property(vevent,
 594                    ICAL_ORGANIZER_PROPERTY) == NULL)
 595                    && (strlen(buf) > 0) ) {
 596
 597                         /* set new organizer */
 598                         sprintf(organizer_string, "MAILTO:%s", buf);
 599                         icalcomponent_add_property(vevent,
 600                                 icalproperty_new_organizer(organizer_string)
 601                         );
 602
 603                 }
 604
 605                 /*
 606                  * Add any new attendees listed in the web form
 607                  */
 608                 lprintf(9, "Add any new attendees\n");
 609
 610                 /* First, strip out the parenthesized partstats.  */
 611                 strcpy(form_attendees, bstr("attendees"));
 612                 stripout(form_attendees, '(', ')');
 613
 614                 /* Now iterate! */
 615                 for (i=0; i<num_tokens(form_attendees, '\n'); ++i) {
 616                         extract_token(buf, form_attendees, i, '\n');
 617                         striplt(buf);
 618                         if (strlen(buf) > 0) {
 619                                 lprintf(9, "Attendee: <%s>\n", buf);
 620                                 sprintf(attendee_string, "MAILTO:%s", buf);
 621                                 foundit = 0;
 622
 623                                 for (attendee = icalcomponent_get_first_property(vevent, ICAL_ATTENDEE_PROPERTY); attendee != NULL; attendee = icalcomponent_get_next_property(vevent, ICAL_ATTENDEE_PROPERTY)) {
 624                                         if (!strcasecmp(attendee_string,
 625                                            icalproperty_get_attendee(attendee)))
 626                                                 ++foundit;
 627                                 }
 628
 629
 630                                 if (foundit == 0) {
 631                                         icalcomponent_add_property(vevent,
 632                                                 icalproperty_new_attendee(attendee_string)
 633                                         );
 634                                 }
 635                         }
 636                 }
 637
 638                 /*
 639                  * Remove any attendees *not* listed in the web form
 640                  */
 641 STARTOVER:      lprintf(9, "Remove unlisted attendees\n");
 642                 for (attendee = icalcomponent_get_first_property(vevent, ICAL_ATTENDEE_PROPERTY); attendee != NULL; attendee = icalcomponent_get_next_property(vevent, ICAL_ATTENDEE_PROPERTY)) {
 643                         strcpy(attendee_string, icalproperty_get_attendee(attendee));
 644                         if (!strncasecmp(attendee_string, "MAILTO:", 7)) {
 645                                 strcpy(attendee_string, &attendee_string[7]);
 646                                 striplt(attendee_string);
 647                                 foundit = 0;
 648                                 for (i=0; i<num_tokens(form_attendees, '\n'); ++i) {
 649                                         extract_token(buf, form_attendees, i, '\n');
 650                                         striplt(buf);
 651                                         if (!strcasecmp(buf, attendee_string)) ++foundit;
 652                                 }
 653                                 if (foundit == 0) {
 654                                         icalcomponent_remove_property(vevent, attendee);
 655                                         icalproperty_free(attendee);
 656                                         goto STARTOVER;
 657                                 }
 658                         }
 659                 }
 660
 661                 /*
 662                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 663                  * for two reasons: one, it's easier to just free the whole thing
 664                  * when we're done instead of unbundling, but more importantly, we
 665                  * can't encapsulate something that may already be encapsulated
 666                  * somewhere else.
 667                  */
 668                 lprintf(9, "Encapsulating into full VCALENDAR component\n");
 669                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vevent));
 670
 671                 /* If the user clicked 'Save' then save it to the server. */
 672                 lprintf(9, "Serializing it for saving\n");
 673                 if ( (encaps != NULL) && (!strcasecmp(bstr("sc"), "Save")) ) {
 674                         serv_puts("ENT0 1|||4|||1|");
 675                         serv_gets(buf);
 676                         if (buf[0] == '8') {
 677                                 serv_puts("Content-type: text/calendar");
 678                                 serv_puts("");
 679                                 serv_puts(icalcomponent_as_ical_string(encaps));
 680                                 serv_puts("000");
 681                         }
 682                         while (serv_gets(buf), strcmp(buf, "000")) {
 683                                 lprintf(9, "ENT0 REPLY: %s\n", buf);
 684                         }
 685                         icalcomponent_free(encaps);
 686                 }
 687
 688                 /* Or, check attendee availability if the user asked for that. */
 689                 if ( (encaps != NULL) && (!strcasecmp(bstr("sc"), "Check attendee availability")) ) {
 690
 691                         /* Call this function, which does the real work */
 692                         check_attendee_availability(encaps);
 693
 694                         /* This displays the form again, with our annotations */
 695                         display_edit_individual_event(encaps, msgnum);
 696
 697                         icalcomponent_free(encaps);
 698                 }
 699
 700         }
 701
 702         /*
 703          * If the user clicked 'Delete' then delete it.
 704          */
 705         lprintf(9, "Checking to see if we have to delete an old event\n");
 706         if ( (!strcasecmp(bstr("sc"), "Delete")) && (msgnum > 0L) ) {
 707                 serv_printf("DELE %ld", atol(bstr("msgnum")));
 708                 serv_gets(buf);
 709         }
 710
 711         if (created_new_vevent) {
 712                 icalcomponent_free(vevent);
 713         }
 714
 715         /* If this was a save or deelete, go back to the calendar view. */
 716         if (strcasecmp(bstr("sc"), "Check attendee availability")) {
 717                 readloop("readfwd");
 718         }
 719 }
 720
 721
 722 #endif /* WEBCIT_WITH_CALENDAR_SERVICE */