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) % 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                 /* 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(3);
  88         do_template("beginbox_nt");
  89         wprintf("<h3>&nbsp;<IMG ALIGN=CENTER SRC=\"/static/vcalendar.gif\">"
  90                 "&nbsp;Add or edit an event</h3>\n");
  91
  92         /************************************************************
  93          * Uncomment this to see the UID in calendar events for debugging
  94         wprintf("UID == ");
  95         p = icalcomponent_get_first_property(vevent, ICAL_UID_PROPERTY);
  96         if (p != NULL) {
  97                 escputs((char *)icalproperty_get_comment(p));
  98         }
  99         wprintf("<BR>\n");
 100         wprintf("SEQUENCE == %d<BR>\n", sequence);
 101         *************************************************************/
 102
 103         wprintf("<FORM NAME=\"EventForm\" METHOD=\"POST\" ACTION=\"/save_event\">\n");
 104
 105         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 106                 msgnum);
 107         wprintf("<INPUT TYPE=\"hidden\" NAME=\"calview\" VALUE=\"%s\">\n",
 108                 bstr("calview"));
 109         wprintf("<INPUT TYPE=\"hidden\" NAME=\"year\" VALUE=\"%s\">\n",
 110                 bstr("year"));
 111         wprintf("<INPUT TYPE=\"hidden\" NAME=\"month\" VALUE=\"%s\">\n",
 112                 bstr("month"));
 113         wprintf("<INPUT TYPE=\"hidden\" NAME=\"day\" VALUE=\"%s\">\n",
 114                 bstr("day"));
 115
 116         /* Put it in a borderless table so it lines up nicely */
 117         wprintf("<TABLE border=0 width=100%%>\n");
 118
 119         wprintf("<TR><TD><B>Summary</B></TD><TD>\n"
 120                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 121                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 122         p = icalcomponent_get_first_property(vevent, ICAL_SUMMARY_PROPERTY);
 123         if (p != NULL) {
 124                 escputs((char *)icalproperty_get_comment(p));
 125         }
 126         wprintf("\"></TD></TR>\n");
 127
 128         wprintf("<TR><TD><B>Location</B></TD><TD>\n"
 129                 "<INPUT TYPE=\"text\" NAME=\"location\" "
 130                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 131         p = icalcomponent_get_first_property(vevent, ICAL_LOCATION_PROPERTY);
 132         if (p != NULL) {
 133                 escputs((char *)icalproperty_get_comment(p));
 134         }
 135         wprintf("\"></TD></TR>\n");
 136
 137         wprintf("<TR><TD><B>Start</B></TD><TD>\n");
 138         p = icalcomponent_get_first_property(vevent, ICAL_DTSTART_PROPERTY);
 139         if (p != NULL) {
 140                 t_start = icalproperty_get_dtstart(p);
 141                 if (t_start.is_date) {
 142                         t_start.hour = 0;
 143                         t_start.minute = 0;
 144                         t_start.second = 0;
 145                 }
 146         }
 147         else {
 148                 localtime_r(&now, &tm_now);
 149                 tm_now.tm_year = atoi(bstr("year")) - 1900;
 150                 tm_now.tm_mon = atoi(bstr("month")) - 1;
 151                 tm_now.tm_mday = atoi(bstr("day"));
 152                 if (strlen(bstr("hour")) > 0) {
 153                         tm_now.tm_hour = atoi(bstr("hour"));
 154                         tm_now.tm_min = atoi(bstr("minute"));
 155                         tm_now.tm_sec = 0;
 156                 }
 157                 else {
 158                         tm_now.tm_hour = 9;
 159                         tm_now.tm_min = 0;
 160                         tm_now.tm_sec = 0;
 161                 }
 162
 163                 t_start = icaltime_from_timet_with_zone(
 164                         mktime(&tm_now),
 165                         ((!strcasecmp(bstr("alldayevent"), "yes")) ? 1 : 0),
 166                         icaltimezone_get_utc_timezone()
 167                 );
 168                 t_start.is_utc = 1;
 169
 170         }
 171         display_icaltimetype_as_webform(&t_start, "dtstart");
 172
 173         wprintf("<INPUT TYPE=\"checkbox\" NAME=\"alldayevent\" "
 174                 "VALUE=\"yes\" onClick=\""
 175 ""
 176 "                       if (this.checked) { "
 177 "                               this.form.dtstart_hour.value='0'; "
 178 "                               this.form.dtstart_hour.disabled = true; "
 179 "                               this.form.dtstart_minute.value='0'; "
 180 "                               this.form.dtstart_minute.disabled = true; "
 181 "                               this.form.dtend_hour.value='0'; "
 182 "                               this.form.dtend_hour.disabled = true; "
 183 "                               this.form.dtend_minute.value='0'; "
 184 "                               this.form.dtend_minute.disabled = true; "
 185 "                               this.form.dtend_month.disabled = true; "
 186 "                               this.form.dtend_day.disabled = true; "
 187 "                               this.form.dtend_year.disabled = true; "
 188 "                       } "
 189 "                       else { "
 190 "                               this.form.dtstart_hour.disabled = false; "
 191 "                               this.form.dtstart_minute.disabled = false; "
 192 "                               this.form.dtend_hour.disabled = false; "
 193 "                               this.form.dtend_minute.disabled = false; "
 194 "                               this.form.dtend_month.disabled = false; "
 195 "                               this.form.dtend_day.disabled = false; "
 196 "                               this.form.dtend_year.disabled = false; "
 197 "                       } "
 198 " "
 199 " "
 200 "               \" %s >All day event",
 201                 (t_start.is_date ? "CHECKED" : "" )
 202         );
 203
 204         wprintf("</TD></TR>\n");
 205
 206         /* If this is an all-day-event, set the end time to be identical to
 207          * the start time (the hour/minute/second will be set to midnight).
 208          * Otherwise extract or create it.
 209          */
 210         wprintf("<TR><TD><B>End</B></TD><TD>\n");
 211         if (t_start.is_date) {
 212                 t_end = t_start;
 213         }
 214         else {
 215                 p = icalcomponent_get_first_property(vevent,
 216                                                         ICAL_DTEND_PROPERTY);
 217                 if (p != NULL) {
 218                         t_end = icalproperty_get_dtend(p);
 219                 }
 220                 else {
 221                         /* If this is not an all-day event and there is no
 222                          * end time specified, make the default one hour
 223                          * from the start time.
 224                          */
 225                         t_end = t_start;
 226                         t_end.hour += 1;
 227                         t_end.second = 0;
 228                         t_end = icaltime_normalize(t_end);
 229                         /* t_end = icaltime_from_timet(now, 0); */
 230                 }
 231         }
 232         display_icaltimetype_as_webform(&t_end, "dtend");
 233         wprintf("</TD></TR>\n");
 234
 235         wprintf("<TR><TD><B>Notes</B></TD><TD>\n"
 236                 "<TEXTAREA NAME=\"description\" wrap=soft "
 237                 "ROWS=5 COLS=80 WIDTH=80>\n"
 238         );
 239         p = icalcomponent_get_first_property(vevent, ICAL_DESCRIPTION_PROPERTY);
 240         if (p != NULL) {
 241                 escputs((char *)icalproperty_get_comment(p));
 242         }
 243         wprintf("</TEXTAREA></TD></TR>");
 244
 245         /* For a new event, the user creating the event should be the
 246          * organizer.  Set this field accordingly.
 247          */
 248         if (icalcomponent_get_first_property(vevent, ICAL_ORGANIZER_PROPERTY)
 249            == NULL) {
 250                 sprintf(organizer_string, "MAILTO:%s", WC->cs_inet_email);
 251                 icalcomponent_add_property(vevent,
 252                         icalproperty_new_organizer(organizer_string)
 253                 );
 254         }
 255
 256         /* Determine who is the organizer of this event.
 257          * We need to determine "me" or "not me."
 258          */
 259         organizer = icalcomponent_get_first_property(vevent,
 260                                                 ICAL_ORGANIZER_PROPERTY);
 261         if (organizer != NULL) {
 262                 strcpy(organizer_string, icalproperty_get_organizer(organizer));
 263                 if (!strncasecmp(organizer_string, "MAILTO:", 7)) {
 264                         strcpy(organizer_string, &organizer_string[7]);
 265                         striplt(organizer_string);
 266                         lprintf(9, "ISME %s\n", organizer_string);
 267                         serv_printf("ISME %s", organizer_string);
 268                         serv_gets(buf);
 269                         lprintf(9, "%s\n", buf);
 270                         if (buf[0] == '2') {
 271                                 organizer_is_me = 1;
 272                         }
 273                 }
 274         }
 275
 276         wprintf("<TR><TD><B>Organizer</B></TD><TD>");
 277         escputs(organizer_string);
 278         if (organizer_is_me) {
 279                 wprintf(" <FONT SIZE=-1><I>"
 280                         "(you are the organizer)</I></FONT>\n");
 281         }
 282
 283         /*
 284          * Transmit the organizer as a hidden field.   We don't want the user
 285          * to be able to change it, but we do want it fed back to the server,
 286          * especially if this is a new event and there is no organizer already
 287          * in the calendar object.
 288          */
 289         wprintf("<INPUT TYPE=\"hidden\" NAME=\"organizer\" VALUE=\"");
 290         escputs(organizer_string);
 291         wprintf("\">");
 292
 293         wprintf("</TD></TR>\n");
 294
 295         /* Transparency */
 296         wprintf("<TR><TD><B>Show time as:</B></TD><TD>");
 297
 298         p = icalcomponent_get_first_property(vevent, ICAL_TRANSP_PROPERTY);
 299         if (p == NULL) {
 300                 /* No transparency found.  Default to opaque (busy). */
 301                 p = icalproperty_new_transp(ICAL_TRANSP_OPAQUE);
 302                 if (p != NULL) {
 303                         icalcomponent_add_property(vevent, p);
 304                 }
 305         }
 306         if (p != NULL) {
 307                 v = icalproperty_get_value(p);
 308         }
 309         else {
 310                 v = NULL;
 311         }
 312
 313         wprintf("<INPUT TYPE=\"radio\" NAME=\"transp\" VALUE=\"transparent\"");
 314         if (v != NULL) if (icalvalue_get_transp(v) == ICAL_TRANSP_TRANSPARENT)
 315                 wprintf(" CHECKED");
 316         wprintf(">Free&nbsp;&nbsp;");
 317
 318         wprintf("<INPUT TYPE=\"radio\" NAME=\"transp\" VALUE=\"opaque\"");
 319         if (v != NULL) if (icalvalue_get_transp(v) == ICAL_TRANSP_OPAQUE)
 320                 wprintf(" CHECKED");
 321         wprintf(">Busy");
 322
 323         wprintf("</TD></TR>\n");
 324
 325         /* Attendees */
 326         wprintf("<TR><TD><B>Attendees</B><BR>"
 327                 "<FONT SIZE=-2>(One per line)"
 328                 "</FONT></TD><TD>"
 329                 "<TEXTAREA %s NAME=\"attendees\" wrap=soft "
 330                 "ROWS=3 COLS=80 WIDTH=80>\n",
 331                 (organizer_is_me ? "" : "DISABLED ")
 332         );
 333         i = 0;
 334         for (attendee = icalcomponent_get_first_property(vevent, ICAL_ATTENDEE_PROPERTY);
 335             attendee != NULL;
 336             attendee = icalcomponent_get_next_property(vevent, ICAL_ATTENDEE_PROPERTY)) {
 337                 strcpy(attendee_string, icalproperty_get_attendee(attendee));
 338                 if (!strncasecmp(attendee_string, "MAILTO:", 7)) {
 339
 340                         /* screen name or email address */
 341                         strcpy(attendee_string, &attendee_string[7]);
 342                         striplt(attendee_string);
 343                         if (i++) wprintf("\n");
 344                         escputs(attendee_string);
 345                         wprintf(" ");
 346
 347                         /* participant status */
 348                         partstat_as_string(buf, attendee);
 349                         escputs(buf);
 350                 }
 351         }
 352         wprintf("</TEXTAREA></TD></TR>\n");
 353
 354         /* Done with properties. */
 355         wprintf("</TABLE>\n<CENTER>"
 356                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Save\">"
 357                 "&nbsp;&nbsp;"
 358                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Delete\">\n"
 359                 "&nbsp;&nbsp;"
 360                 "<INPUT TYPE=\"submit\" NAME=\"sc\" "
 361                                 "VALUE=\"Check attendee availability\">\n"
 362                 "&nbsp;&nbsp;"
 363                 "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Cancel\">\n"
 364                 "</CENTER>\n"
 365         );
 366
 367         wprintf("</FORM>\n");
 368
 369         wprintf("<SCRIPT language=\"javascript\">"
 370                 "<!--"
 371                         "if (document.EventForm.alldayevent.checked) {"
 372                                 "document.EventForm.dtstart_hour.value='0';"
 373                                 "document.EventForm.dtstart_hour.disabled = true;"
 374                                 "document.EventForm.dtstart_minute.value='0';"
 375                                 "document.EventForm.dtstart_minute.disabled = true;"
 376                                 "document.EventForm.dtend_hour.value='0';"
 377                                 "document.EventForm.dtend_hour.disabled = true;"
 378                                 "document.EventForm.dtend_minute.value='0';"
 379                                 "document.EventForm.dtend_minute.disabled = true;"
 380                                 "document.EventForm.dtend_month.disabled = true;"
 381                                 "document.EventForm.dtend_day.disabled = true;"
 382                                 "document.EventForm.dtend_year.disabled = true;"
 383                         "}"
 384                         "else {"
 385                                 "document.EventForm.dtstart_hour.disabled = false;"
 386                                 "document.EventForm.dtstart_minute.disabled = false;"
 387                                 "document.EventForm.dtend_hour.disabled = false;"
 388                                 "document.EventForm.dtend_minute.disabled = false;"
 389                                 "document.EventForm.dtend_month.disabled = false;"
 390                                 "document.EventForm.dtend_day.disabled = false;"
 391                                 "document.EventForm.dtend_year.disabled = false;"
 392                         "}"
 393                 "//-->"
 394                 "</SCRIPT>\n"
 395         );
 396
 397         do_template("endbox");
 398         wDumpContent(1);
 399
 400         if (created_new_vevent) {
 401                 icalcomponent_free(vevent);
 402         }
 403 }
 404
 405 /*
 406  * Save an edited event
 407  *
 408  */
 409 void save_individual_event(icalcomponent *supplied_vevent, long msgnum) {
 410         char buf[SIZ];
 411         icalproperty *prop;
 412         icalcomponent *vevent, *encaps;
 413         int created_new_vevent = 0;
 414         int all_day_event = 0;
 415         struct icaltimetype event_start;
 416         icalproperty *attendee = NULL;
 417         char attendee_string[SIZ];
 418         int i;
 419         int foundit;
 420         char form_attendees[SIZ];
 421         char organizer_string[SIZ];
 422         int sequence = 0;
 423         enum icalproperty_transp formtransp = ICAL_TRANSP_NONE;
 424
 425         if (supplied_vevent != NULL) {
 426                 vevent = supplied_vevent;
 427                 /* If we're looking at a fully encapsulated VCALENDAR
 428                  * rather than a VEVENT component, attempt to use the first
 429                  * relevant VEVENT subcomponent.  If there is none, the
 430                  * NULL returned by icalcomponent_get_first_component() will
 431                  * tell the next iteration of this function to create a
 432                  * new one.
 433                  */
 434                 if (icalcomponent_isa(vevent) == ICAL_VCALENDAR_COMPONENT) {
 435                         save_individual_event(
 436                                 icalcomponent_get_first_component(
 437                                         vevent, ICAL_VEVENT_COMPONENT
 438                                 ), msgnum
 439                         );
 440                         return;
 441                 }
 442         }
 443         else {
 444                 vevent = icalcomponent_new(ICAL_VEVENT_COMPONENT);
 445                 created_new_vevent = 1;
 446         }
 447
 448         if ( (!strcasecmp(bstr("sc"), "Save"))
 449            || (!strcasecmp(bstr("sc"), "Check attendee availability")) ) {
 450
 451                 /* Replace values in the component with ones from the form */
 452
 453                 while (prop = icalcomponent_get_first_property(vevent,
 454                       ICAL_SUMMARY_PROPERTY), prop != NULL) {
 455                         icalcomponent_remove_property(vevent, prop);
 456                         icalproperty_free(prop);
 457                 }
 458                 icalcomponent_add_property(vevent,
 459                         icalproperty_new_summary(bstr("summary")));
 460
 461                 while (prop = icalcomponent_get_first_property(vevent,
 462                       ICAL_LOCATION_PROPERTY), prop != NULL) {
 463                         icalcomponent_remove_property(vevent, prop);
 464                         icalproperty_free(prop);
 465                 }
 466                 icalcomponent_add_property(vevent,
 467                         icalproperty_new_location(bstr("location")));
 468
 469                 while (prop = icalcomponent_get_first_property(vevent,
 470                       ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 471                         icalcomponent_remove_property(vevent, prop);
 472                         icalproperty_free(prop);
 473                 }
 474                 icalcomponent_add_property(vevent,
 475                         icalproperty_new_description(bstr("description")));
 476
 477                 while (prop = icalcomponent_get_first_property(vevent,
 478                       ICAL_DTSTART_PROPERTY), prop != NULL) {
 479                         icalcomponent_remove_property(vevent, prop);
 480                         icalproperty_free(prop);
 481                 }
 482
 483                 if (!strcmp(bstr("alldayevent"), "yes")) {
 484                         all_day_event = 1;
 485                 }
 486                 else {
 487                         all_day_event = 0;
 488                 }
 489
 490                 event_start = icaltime_from_webform("dtstart");
 491                 if (all_day_event) {
 492                         event_start.is_date = 1;
 493                         event_start.hour = 0;
 494                         event_start.minute = 0;
 495                         event_start.second = 0;
 496                 }
 497
 498
 499                 /* The following odd-looking snippet of code looks like it
 500                  * takes some unnecessary steps.  It is done this way because
 501                  * libical incorrectly turns an "all day event" into a normal
 502                  * event starting at midnight (i.e. it serializes as date/time
 503                  * instead of just date) unless icalvalue_new_date() is used.
 504                  * So we force it, if this is an all day event.
 505                  */
 506                 prop = icalproperty_new_dtstart(event_start);
 507                 if (all_day_event) {
 508                         icalproperty_set_value(prop,
 509                                 icalvalue_new_date(event_start)
 510                         );
 511                 }
 512
 513                 if (prop) icalcomponent_add_property(vevent, prop);
 514                 else icalproperty_free(prop);
 515
 516                 while (prop = icalcomponent_get_first_property(vevent,
 517                       ICAL_DTEND_PROPERTY), prop != NULL) {
 518                         icalcomponent_remove_property(vevent, prop);
 519                         icalproperty_free(prop);
 520                 }
 521                 while (prop = icalcomponent_get_first_property(vevent,
 522                       ICAL_DURATION_PROPERTY), prop != NULL) {
 523                         icalcomponent_remove_property(vevent, prop);
 524                         icalproperty_free(prop);
 525                 }
 526
 527                 if (all_day_event == 0) {
 528                         icalcomponent_add_property(vevent,
 529                                 icalproperty_new_dtend(icaltime_normalize(
 530                                         icaltime_from_webform("dtend"))
 531                                 )
 532                         );
 533                 }
 534
 535                 /* See if transparency is indicated */
 536                 if (strlen(bstr("transp")) > 0) {
 537                         if (!strcasecmp(bstr("transp"), "opaque")) {
 538                                 formtransp = ICAL_TRANSP_OPAQUE;
 539                         }
 540                         else if (!strcasecmp(bstr("transp"), "transparent")) {
 541                                 formtransp = ICAL_TRANSP_TRANSPARENT;
 542                         }
 543
 544                         while (prop = icalcomponent_get_first_property(vevent, ICAL_TRANSP_PROPERTY),
 545                               (prop != NULL)) {
 546                                 icalcomponent_remove_property(vevent, prop);
 547                                 icalproperty_free(prop);
 548                         }
 549
 550                         lprintf(9, "adding new property...\n");
 551                         icalcomponent_add_property(vevent, icalproperty_new_transp(formtransp));
 552                         lprintf(9, "...added it.\n");
 553                 }
 554
 555                 /* Give this event a UID if it doesn't have one. */
 556                 lprintf(9, "Give this event a UID if it doesn't have one.\n");
 557                 if (icalcomponent_get_first_property(vevent,
 558                    ICAL_UID_PROPERTY) == NULL) {
 559                         generate_uuid(buf);
 560                         icalcomponent_add_property(vevent,
 561                                 icalproperty_new_uid(buf)
 562                         );
 563                 }
 564
 565                 /* Increment the sequence ID */
 566                 lprintf(9, "Increment the sequence ID\n");
 567                 while (prop = icalcomponent_get_first_property(vevent,
 568                       ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 569                         i = icalproperty_get_sequence(prop);
 570                         lprintf(9, "Sequence was %d\n", i);
 571                         if (i > sequence) sequence = i;
 572                         icalcomponent_remove_property(vevent, prop);
 573                         icalproperty_free(prop);
 574                 }
 575                 ++sequence;
 576                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 577                 icalcomponent_add_property(vevent,
 578                         icalproperty_new_sequence(sequence)
 579                 );
 580
 581                 /* Set the organizer, only if one does not already exist *and*
 582                  * the form is supplying one
 583                  */
 584                 lprintf(9, "Setting the organizer...\n");
 585                 strcpy(buf, bstr("organizer"));
 586                 if ( (icalcomponent_get_first_property(vevent,
 587                    ICAL_ORGANIZER_PROPERTY) == NULL)
 588                    && (strlen(buf) > 0) ) {
 589
 590                         /* set new organizer */
 591                         sprintf(organizer_string, "MAILTO:%s", buf);
 592                         icalcomponent_add_property(vevent,
 593                                 icalproperty_new_organizer(organizer_string)
 594                         );
 595
 596                 }
 597
 598                 /*
 599                  * Add any new attendees listed in the web form
 600                  */
 601                 lprintf(9, "Add any new attendees\n");
 602
 603                 /* First, strip out the parenthesized partstats.  */
 604                 strcpy(form_attendees, bstr("attendees"));
 605                 stripout(form_attendees, '(', ')');
 606
 607                 /* Now iterate! */
 608                 for (i=0; i<num_tokens(form_attendees, '\n'); ++i) {
 609                         extract_token(buf, form_attendees, i, '\n');
 610                         striplt(buf);
 611                         if (strlen(buf) > 0) {
 612                                 lprintf(9, "Attendee: <%s>\n", buf);
 613                                 sprintf(attendee_string, "MAILTO:%s", buf);
 614                                 foundit = 0;
 615
 616                                 for (attendee = icalcomponent_get_first_property(vevent, ICAL_ATTENDEE_PROPERTY); attendee != NULL; attendee = icalcomponent_get_next_property(vevent, ICAL_ATTENDEE_PROPERTY)) {
 617                                         if (!strcasecmp(attendee_string,
 618                                            icalproperty_get_attendee(attendee)))
 619                                                 ++foundit;
 620                                 }
 621
 622
 623                                 if (foundit == 0) {
 624                                         icalcomponent_add_property(vevent,
 625                                                 icalproperty_new_attendee(attendee_string)
 626                                         );
 627                                 }
 628                         }
 629                 }
 630
 631                 /*
 632                  * Remove any attendees *not* listed in the web form
 633                  */
 634 STARTOVER:      lprintf(9, "Remove unlisted attendees\n");
 635                 for (attendee = icalcomponent_get_first_property(vevent, ICAL_ATTENDEE_PROPERTY); attendee != NULL; attendee = icalcomponent_get_next_property(vevent, ICAL_ATTENDEE_PROPERTY)) {
 636                         strcpy(attendee_string, icalproperty_get_attendee(attendee));
 637                         if (!strncasecmp(attendee_string, "MAILTO:", 7)) {
 638                                 strcpy(attendee_string, &attendee_string[7]);
 639                                 striplt(attendee_string);
 640                                 foundit = 0;
 641                                 for (i=0; i<num_tokens(form_attendees, '\n'); ++i) {
 642                                         extract_token(buf, form_attendees, i, '\n');
 643                                         striplt(buf);
 644                                         if (!strcasecmp(buf, attendee_string)) ++foundit;
 645                                 }
 646                                 if (foundit == 0) {
 647                                         icalcomponent_remove_property(vevent, attendee);
 648                                         icalproperty_free(attendee);
 649                                         goto STARTOVER;
 650                                 }
 651                         }
 652                 }
 653
 654                 /*
 655                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 656                  * for two reasons: one, it's easier to just free the whole thing
 657                  * when we're done instead of unbundling, but more importantly, we
 658                  * can't encapsulate something that may already be encapsulated
 659                  * somewhere else.
 660                  */
 661                 lprintf(9, "Encapsulating into full VCALENDAR component\n");
 662                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vevent));
 663
 664                 /* If the user clicked 'Save' then save it to the server. */
 665                 lprintf(9, "Serializing it for saving\n");
 666                 if ( (encaps != NULL) && (!strcasecmp(bstr("sc"), "Save")) ) {
 667                         serv_puts("ENT0 1|||4");
 668                         serv_gets(buf);
 669                         if (buf[0] == '4') {
 670                                 serv_puts("Content-type: text/calendar");
 671                                 serv_puts("");
 672                                 serv_puts(icalcomponent_as_ical_string(encaps));
 673                                 serv_puts("000");
 674                         }
 675                         icalcomponent_free(encaps);
 676                 }
 677
 678                 /* Or, check attendee availability if the user asked for that. */
 679                 if ( (encaps != NULL) && (!strcasecmp(bstr("sc"), "Check attendee availability")) ) {
 680
 681                         /* Call this function, which does the real work */
 682                         check_attendee_availability(encaps);
 683
 684                         /* This displays the form again, with our annotations */
 685                         display_edit_individual_event(encaps, msgnum);
 686
 687                         icalcomponent_free(encaps);
 688                 }
 689
 690         }
 691
 692         /*
 693          * If the user clicked 'Delete' then delete it.
 694          */
 695         lprintf(9, "Checking to see if we have to delete an old event\n");
 696         if ( (!strcasecmp(bstr("sc"), "Delete")) && (msgnum > 0L) ) {
 697                 serv_printf("DELE %ld", atol(bstr("msgnum")));
 698                 serv_gets(buf);
 699         }
 700
 701         if (created_new_vevent) {
 702                 icalcomponent_free(vevent);
 703         }
 704
 705         /* If this was a save or deelete, go back to the calendar view. */
 706         if (strcasecmp(bstr("sc"), "Check attendee availability")) {
 707                 readloop("readfwd");
 708         }
 709 }
 710
 711
 712 #endif /* WEBCIT_WITH_CALENDAR_SERVICE */