webcit/calendar.c

   1 /*
   2  * $Id$
   3  *
   4  * Functions which handle calendar objects and their processing/display.
   5  */
   6
   7 #include "webcit.h"
   8 #include "webserver.h"
   9
  10
  11 /*
  12  * Process a calendar object.  At this point it's already been deserialized by cal_process_attachment()
  13  *
  14  * cal:                 the calendar object
  15  * recursion_level:     Number of times we've recursed into this function
  16  * msgnum:              Message number on the Citadel server
  17  * cal_partnum:         MIME part number within that message containing the calendar object
  18  */
  19 void cal_process_object(StrBuf *Target,
  20                         icalcomponent *cal,
  21                         int recursion_level,
  22                         long msgnum,
  23                         const char *cal_partnum)
  24 {
  25         icalcomponent *c;
  26         icalproperty *method = NULL;
  27         icalproperty_method the_method = ICAL_METHOD_NONE;
  28         icalproperty *p;
  29         struct icaltimetype t;
  30         time_t tt;
  31         char buf[256];
  32         char conflict_name[256];
  33         char conflict_message[256];
  34         int is_update = 0;
  35         char divname[32];
  36         static int divcount = 0;
  37
  38         sprintf(divname, "rsvp%04x", ++divcount);
  39
  40         /* Convert timezones to something easy to display.
  41          * It's safe to do this in memory because we're only changing it on the
  42          * display side -- when we tell the server to do something with the object,
  43          * the server will be working with its original copy in the database.
  44          */
  45         if ((cal) && (recursion_level == 0)) {
  46                 ical_dezonify(cal);
  47         }
  48
  49         /* Leading HTML for the display of this object */
  50         if (recursion_level == 0) {
  51                 StrBufAppendPrintf(Target, "<div class=\"mimepart\">\n");
  52         }
  53
  54         /* Look for a method */
  55         method = icalcomponent_get_first_property(cal, ICAL_METHOD_PROPERTY);
  56
  57         /* See what we need to do with this */
  58         if (method != NULL) {
  59                 the_method = icalproperty_get_method(method);
  60                 char *title;
  61
  62                 StrBufAppendPrintf(Target, "<div id=\"%s_title\">", divname);
  63                 StrBufAppendPrintf(Target, "<img src=\"static/calarea_48x.gif\">");
  64                 StrBufAppendPrintf(Target, "<span>");
  65                 switch(the_method) {
  66                 case ICAL_METHOD_REQUEST:
  67                         title = _("Meeting invitation");
  68                         break;
  69                 case ICAL_METHOD_REPLY:
  70                         title = _("Attendee's reply to your invitation");
  71                         break;
  72                 case ICAL_METHOD_PUBLISH:
  73                         title = _("Published event");
  74                         break;
  75                 default:
  76                         title = _("This is an unknown type of calendar item.");
  77                         break;
  78                 }
  79                 StrBufAppendPrintf(Target, "</span>");
  80
  81                 StrBufAppendPrintf(Target, "&nbsp;&nbsp;%s",title);
  82                 StrBufAppendPrintf(Target, "</div>");
  83         }
  84
  85         StrBufAppendPrintf(Target, "<dl>");
  86         p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
  87         if (p != NULL) {
  88                 StrBufAppendPrintf(Target, "<dt>");
  89                 StrBufAppendPrintf(Target, _("Summary:"));
  90                 StrBufAppendPrintf(Target, "</dt><dd>");
  91                 StrEscAppend(Target, NULL, (char *)icalproperty_get_comment(p), 0, 0);
  92                 StrBufAppendPrintf(Target, "</dd>\n");
  93         }
  94
  95         p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
  96         if (p != NULL) {
  97                 StrBufAppendPrintf(Target, "<dt>");
  98                 StrBufAppendPrintf(Target, _("Location:"));
  99                 StrBufAppendPrintf(Target, "</dt><dd>");
 100                 StrEscAppend(Target, NULL, (char *)icalproperty_get_comment(p), 0, 0);
 101                 StrBufAppendPrintf(Target, "</dd>\n");
 102         }
 103
 104         /*
 105          * Only show start/end times if we're actually looking at the VEVENT
 106          * component.  Otherwise it shows bogus dates for things like timezone.
 107          */
 108         if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
 109
 110                 p = icalcomponent_get_first_property(cal, ICAL_DTSTART_PROPERTY);
 111                 if (p != NULL) {
 112                         t = icalproperty_get_dtstart(p);
 113
 114                         if (t.is_date) {
 115                                 struct tm d_tm;
 116                                 char d_str[32];
 117                                 memset(&d_tm, 0, sizeof d_tm);
 118                                 d_tm.tm_year = t.year - 1900;
 119                                 d_tm.tm_mon = t.month - 1;
 120                                 d_tm.tm_mday = t.day;
 121                                 wc_strftime(d_str, sizeof d_str, "%x", &d_tm);
 122                                 StrBufAppendPrintf(Target, "<dt>");
 123                                 StrBufAppendPrintf(Target, _("Date:"));
 124                                 StrBufAppendPrintf(Target, "</dt><dd>%s</dd>", d_str);
 125                         }
 126                         else {
 127                                 tt = icaltime_as_timet(t);
 128                                 webcit_fmt_date(buf, tt, 0);
 129                                 StrBufAppendPrintf(Target, "<dt>");
 130                                 StrBufAppendPrintf(Target, _("Starting date/time:"));
 131                                 StrBufAppendPrintf(Target, "</dt><dd>%s</dd>", buf);
 132                         }
 133                 }
 134
 135                 p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
 136                 if (p != NULL) {
 137                         t = icalproperty_get_dtend(p);
 138                         tt = icaltime_as_timet(t);
 139                         webcit_fmt_date(buf, tt, 0);
 140                         StrBufAppendPrintf(Target, "<dt>");
 141                         StrBufAppendPrintf(Target, _("Ending date/time:"));
 142                         StrBufAppendPrintf(Target, "</dt><dd>%s</dd>", buf);
 143                 }
 144
 145         }
 146
 147         p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
 148         if (p != NULL) {
 149                 StrBufAppendPrintf(Target, "<dt>");
 150                 StrBufAppendPrintf(Target, _("Description:"));
 151                 StrBufAppendPrintf(Target, "</dt><dd>");
 152                 StrEscAppend(Target, NULL, (char *)icalproperty_get_comment(p), 0, 0);
 153                 StrBufAppendPrintf(Target, "</dd>\n");
 154         }
 155
 156         if (icalcomponent_get_first_property(cal, ICAL_RRULE_PROPERTY)) {
 157                 /* Unusual string syntax used here in order to re-use existing translations */
 158                 StrBufAppendPrintf(Target, "<dt>%s:</dt><dd>%s.</dd>\n",
 159                         _("Recurrence"),
 160                         _("This is a recurring event")
 161                 );
 162         }
 163
 164         /* If the component has attendees, iterate through them. */
 165         for (p = icalcomponent_get_first_property(cal, ICAL_ATTENDEE_PROPERTY);
 166              (p != NULL);
 167              p = icalcomponent_get_next_property(cal, ICAL_ATTENDEE_PROPERTY)) {
 168                 StrBufAppendPrintf(Target, "<dt>");
 169                 StrBufAppendPrintf(Target, _("Attendee:"));
 170                 StrBufAppendPrintf(Target, "</dt><dd>");
 171                 safestrncpy(buf, icalproperty_get_attendee(p), sizeof buf);
 172                 if (!strncasecmp(buf, "MAILTO:", 7)) {
 173
 174                         /** screen name or email address */
 175                         strcpy(buf, &buf[7]);
 176                         striplt(buf);
 177                         StrEscAppend(Target, NULL, buf, 0, 0);
 178                         StrBufAppendPrintf(Target, " ");
 179
 180                         /** participant status */
 181                         partstat_as_string(buf, p);
 182                         StrEscAppend(Target, NULL, buf, 0, 0);
 183                 }
 184                 StrBufAppendPrintf(Target, "</dd>\n");
 185         }
 186
 187         /* If the component has subcomponents, recurse through them. */
 188         for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
 189              (c != 0);
 190              c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
 191                 /* Recursively process subcomponent */
 192                 cal_process_object(Target, c, recursion_level+1, msgnum, cal_partnum);
 193         }
 194
 195         /* If this is a REQUEST, display conflicts and buttons */
 196         if (the_method == ICAL_METHOD_REQUEST) {
 197
 198                 /* Check for conflicts */
 199                 lprintf(9, "Checking server calendar for conflicts...\n");
 200                 serv_printf("ICAL conflicts|%ld|%s|", msgnum, cal_partnum);
 201                 serv_getln(buf, sizeof buf);
 202                 if (buf[0] == '1') {
 203                         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 204                                 extract_token(conflict_name, buf, 3, '|', sizeof conflict_name);
 205                                 is_update = extract_int(buf, 4);
 206
 207                                 if (is_update) {
 208                                         snprintf(conflict_message, sizeof conflict_message,
 209                                                  _("This is an update of '%s' which is already in your calendar."), conflict_name);
 210                                 }
 211                                 else {
 212                                         snprintf(conflict_message, sizeof conflict_message,
 213                                                  _("This event would conflict with '%s' which is already in your calendar."), conflict_name);
 214                                 }
 215
 216                                 StrBufAppendPrintf(Target, "<dt>%s",
 217                                         (is_update ?
 218                                          _("Update:") :
 219                                          _("CONFLICT:")
 220                                                 )
 221                                         );
 222                                 StrBufAppendPrintf(Target, "</dt><dd>");
 223                                 StrEscAppend(Target, NULL, conflict_message, 0, 0);
 224                                 StrBufAppendPrintf(Target, "</dd>\n");
 225                         }
 226                 }
 227                 lprintf(9, "...done.\n");
 228
 229                 StrBufAppendPrintf(Target, "</dl>");
 230
 231                 /* Display the Accept/Decline buttons */
 232                 StrBufAppendPrintf(Target, "<p id=\"%s_question\">"
 233                         "%s "
 234                         "&nbsp;&nbsp;&nbsp;<span class=\"button_link\"> "
 235                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Accept');\">%s</a>"
 236                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 237                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Tentative');\">%s</a>"
 238                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 239                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Decline');\">%s</a>"
 240                         "</span></p>\n",
 241                         divname,
 242                         _("How would you like to respond to this invitation?"),
 243                         divname, divname, msgnum, cal_partnum, _("Accept"),
 244                         divname, divname, msgnum, cal_partnum, _("Tentative"),
 245                         divname, divname, msgnum, cal_partnum, _("Decline")
 246                         );
 247
 248         }
 249
 250         /* If this is a REPLY, display update button */
 251         if (the_method == ICAL_METHOD_REPLY) {
 252
 253                 /* Display the update buttons */
 254                 StrBufAppendPrintf(Target, "<p id=\"%s_question\" >"
 255                         "%s "
 256                         "&nbsp;&nbsp;&nbsp;<span class=\"button_link\"> "
 257                         "<a href=\"javascript:HandleRSVP('%s_question','%s_title','%ld','%s','Update');\">%s</a>"
 258                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 259                         "<a href=\"javascript:HandleRSVP('%s_question','%s_title','%ld','%s','Ignore');\">%s</a>"
 260                         "</span></p>\n",
 261                         divname,
 262                         _("Click <i>Update</i> to accept this reply and update your calendar."),
 263                         divname, divname, msgnum, cal_partnum, _("Update"),
 264                         divname, divname, msgnum, cal_partnum, _("Ignore")
 265                         );
 266
 267         }
 268
 269         /* Trailing HTML for the display of this object */
 270         if (recursion_level == 0) {
 271                 StrBufAppendPrintf(Target, "<p>&nbsp;</p></div>\n");
 272         }
 273 }
 274
 275
 276 /*
 277  * Deserialize a calendar object in a message so it can be displayed.
 278  *
 279  */
 280 void cal_process_attachment(wc_mime_attachment *Mime)
 281 {
 282         icalcomponent *cal;
 283
 284         cal = icalcomponent_new_from_string(ChrPtr(Mime->Data));
 285         FlushStrBuf(Mime->Data);
 286         if (cal == NULL) {
 287                 StrBufAppendPrintf(Mime->Data, _("There was an error parsing this calendar item."));
 288                 StrBufAppendPrintf(Mime->Data, "<br />\n");
 289                 return;
 290         }
 291
 292         cal_process_object(Mime->Data, cal, 0, Mime->msgnum, ChrPtr(Mime->PartNum));
 293
 294         /* Free the memory we obtained from libical's constructor */
 295         icalcomponent_free(cal);
 296 }
 297
 298
 299
 300
 301 /**
 302  * \brief accept/decline meeting
 303  * Respond to a meeting request
 304  */
 305 void respond_to_request(void)
 306 {
 307         char buf[1024];
 308
 309         begin_ajax_response();
 310
 311         serv_printf("ICAL respond|%s|%s|%s|",
 312                 bstr("msgnum"),
 313                 bstr("cal_partnum"),
 314                 bstr("sc")
 315         );
 316         serv_getln(buf, sizeof buf);
 317
 318         if (buf[0] == '2') {
 319                 wprintf("<img src=\"static/calarea_48x.gif\"><span>");
 320                 if (!strcasecmp(bstr("sc"), "accept")) {
 321                         wprintf(_("You have accepted this meeting invitation.  "
 322                                 "It has been entered into your calendar.")
 323                         );
 324                 } else if (!strcasecmp(bstr("sc"), "tentative")) {
 325                         wprintf(_("You have tentatively accepted this meeting invitation.  "
 326                                 "It has been 'pencilled in' to your calendar.")
 327                         );
 328                 } else if (!strcasecmp(bstr("sc"), "decline")) {
 329                         wprintf(_("You have declined this meeting invitation.  "
 330                                   "It has <b>not</b> been entered into your calendar.")
 331                                 );
 332                 }
 333                 wprintf(" ");
 334                 wprintf(_("A reply has been sent to the meeting organizer."));
 335                 wprintf("</span>");
 336         } else {
 337                 wprintf("<img align=\"center\" src=\"static/error.gif\"><span>");
 338                 wprintf("%s\n", &buf[4]);
 339                 wprintf("</span>");
 340         }
 341
 342         end_ajax_response();
 343 }
 344
 345
 346
 347 /**
 348  * \brief Handle an incoming RSVP
 349  */
 350 void handle_rsvp(void)
 351 {
 352         char buf[1024];
 353
 354         begin_ajax_response();
 355
 356         serv_printf("ICAL handle_rsvp|%s|%s|%s|",
 357                 bstr("msgnum"),
 358                 bstr("cal_partnum"),
 359                 bstr("sc")
 360         );
 361         serv_getln(buf, sizeof buf);
 362
 363         if (buf[0] == '2') {
 364                 wprintf("<img src=\"static/calarea_48x.gif\"><span>");
 365                 if (!strcasecmp(bstr("sc"), "update")) {
 366                         wprintf(_("Your calendar has been updated to reflect this RSVP."));
 367                 } else if (!strcasecmp(bstr("sc"), "ignore")) {
 368                         wprintf(_("You have chosen to ignore this RSVP. "
 369                                   "Your calendar has <b>not</b> been updated.")
 370                                 );
 371                 }
 372                 wprintf("</span>");
 373         } else {
 374                 wprintf("<img src=\"static/error.gif\"><span> %s\n", &buf[4]);
 375                 wprintf("</span>");
 376         }
 377
 378         end_ajax_response();
 379 }
 380
 381
 382
 383
 384 /*
 385  * free memory allocated using libical
 386  */
 387 void delete_cal(void *vCal)
 388 {
 389         disp_cal *Cal = (disp_cal*) vCal;
 390         icalcomponent_free(Cal->cal);
 391         free(Cal->from);
 392         free(Cal);
 393 }
 394
 395 /*
 396  * This is the meat-and-bones of the first part of our two-phase calendar display.
 397  * As we encounter calendar items in messages being read from the server, we break out
 398  * any iCalendar objects and store them in a hash table.  Later on, the second phase will
 399  * use this hash table to render the calendar for display.
 400  */
 401 void display_individual_cal(icalcomponent *cal, long msgnum, char *from, int unread, struct calview *calv)
 402 {
 403         icalproperty *ps = NULL;
 404         struct icaltimetype dtstart, dtend;
 405         struct icaldurationtype dur;
 406         wcsession *WCC = WC;
 407         disp_cal *Cal;
 408         size_t len;
 409         time_t final_recurrence = 0;
 410         icalcomponent *cptr = NULL;
 411
 412         /* recur variables */
 413         icalproperty *rrule = NULL;
 414         struct icalrecurrencetype recur;
 415         icalrecur_iterator *ritr = NULL;
 416         struct icaltimetype next;
 417         int num_recur = 0;
 418
 419         dtstart = icaltime_null_time();
 420         dtend = icaltime_null_time();
 421
 422         if (WCC->disp_cal_items == NULL)
 423                 WCC->disp_cal_items = NewHash(0, Flathash);
 424
 425         /* Note: anything we do here, we also have to do below for the recurrences. */
 426         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 427         memset(Cal, 0, sizeof(disp_cal));
 428         Cal->cal = icalcomponent_new_clone(cal);
 429
 430         /* Dezonify and decapsulate at the very last moment */
 431         /* lprintf(9, "INITIAL: %s\n", icaltime_as_ical_string(icalproperty_get_dtstart(
 432                 icalcomponent_get_first_property(icalcomponent_get_first_component(
 433                 Cal->cal, ICAL_VEVENT_COMPONENT), ICAL_DTSTART_PROPERTY)))
 434         ); */
 435         ical_dezonify(Cal->cal);
 436         if (icalcomponent_isa(Cal->cal) != ICAL_VEVENT_COMPONENT) {
 437                 cptr = icalcomponent_get_first_component(Cal->cal, ICAL_VEVENT_COMPONENT);
 438                 if (cptr) {
 439                         cptr = icalcomponent_new_clone(cptr);
 440                         icalcomponent_free(Cal->cal);
 441                         Cal->cal = cptr;
 442                 }
 443         }
 444
 445         Cal->unread = unread;
 446         len = strlen(from);
 447         Cal->from = (char*)malloc(len+ 1);
 448         memcpy(Cal->from, from, len + 1);
 449         Cal->cal_msgnum = msgnum;
 450
 451         /* Precalculate the starting date and time of this event, and store it in our top-level
 452          * structure.  Later, when we are rendering the calendar, we can just peek at these values
 453          * without having to break apart every calendar item.
 454          */
 455         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 456         if (ps != NULL) {
 457                 dtstart = icalproperty_get_dtstart(ps);
 458                 Cal->event_start = icaltime_as_timet(dtstart);
 459         }
 460
 461         /* Do the same for the ending date and time.  It makes the day view much easier to render. */
 462         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 463         if (ps != NULL) {
 464                 dtend = icalproperty_get_dtend(ps);
 465                 Cal->event_end = icaltime_as_timet(dtend);
 466         }
 467
 468         /* Store it in the hash list. */
 469         Put(WCC->disp_cal_items,
 470             (char*) &Cal->event_start,
 471             sizeof(Cal->event_start),
 472             Cal,
 473             delete_cal);
 474
 475         /****************************** handle recurring events ******************************/
 476
 477         if (icaltime_is_null_time(dtstart)) return;     /* Can't recur without a start time */
 478
 479         if (!icaltime_is_null_time(dtend)) {            /* Need duration for recurrences */
 480                 dur = icaltime_subtract(dtend, dtstart);
 481         }
 482
 483         /*
 484          * Just let libical iterate the recurrence, and keep looping back to the top of this function,
 485          * adding new hash entries that all point back to the same msgnum, until either the iteration
 486          * stops or some outer bound is reached.  The display code will automatically do the Right Thing.
 487          */
 488         cptr = cal;
 489         if (icalcomponent_isa(cptr) != ICAL_VEVENT_COMPONENT) {
 490                 cptr = icalcomponent_get_first_component(cptr, ICAL_VEVENT_COMPONENT);
 491         }
 492         if (!cptr) return;
 493         ps = icalcomponent_get_first_property(cptr, ICAL_DTSTART_PROPERTY);
 494         if (ps == NULL) return;
 495         dtstart = icalproperty_get_dtstart(ps);
 496         rrule = icalcomponent_get_first_property(cptr, ICAL_RRULE_PROPERTY);
 497         if (!rrule) return;
 498         recur = icalproperty_get_rrule(rrule);
 499         ritr = icalrecur_iterator_new(recur, dtstart);
 500         if (!ritr) return;
 501
 502         int stop_rr = 0;
 503         while (next = icalrecur_iterator_next(ritr), ((!icaltime_is_null_time(next))&&(!stop_rr)) ) {
 504                 ++num_recur;
 505                 if (num_recur > 1) {            /* Skip the first one.  We already did it at the root. */
 506                         /* lprintf(9, "REPEATS: %s\n", icaltime_as_ical_string(next)); */
 507
 508                         /* Note: anything we do here, we also have to do above for the root event. */
 509                         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 510                         memset(Cal, 0, sizeof(disp_cal));
 511                         Cal->cal = icalcomponent_new_clone(cal);
 512                         Cal->unread = unread;
 513                         len = strlen(from);
 514                         Cal->from = (char*)malloc(len+ 1);
 515                         memcpy(Cal->from, from, len + 1);
 516                         Cal->cal_msgnum = msgnum;
 517
 518                         icalcomponent *cptr;
 519                         if (icalcomponent_isa(Cal->cal) == ICAL_VEVENT_COMPONENT) {
 520                                 cptr = Cal->cal;
 521                         }
 522                         else {
 523                                 cptr = icalcomponent_get_first_component(Cal->cal, ICAL_VEVENT_COMPONENT);
 524                         }
 525                         if (cptr) {
 526                                 ps = icalcomponent_get_first_property(cptr, ICAL_DTSTART_PROPERTY);
 527                                 if (ps != NULL) {
 528                                         icalcomponent_remove_property(cptr, ps);
 529                                         ps = icalproperty_new_dtstart(next);
 530                                         icalcomponent_add_property(cptr, ps);
 531
 532                                         Cal->event_start = icaltime_as_timet(next);
 533                                         final_recurrence = Cal->event_start;
 534                                 }
 535
 536                                 ps = icalcomponent_get_first_property(cptr, ICAL_DTEND_PROPERTY);
 537                                 if (ps != NULL) {
 538                                         icalcomponent_remove_property(cptr, ps);
 539
 540                                         /* Make a new dtend */
 541                                         ps = icalproperty_new_dtend(icaltime_add(next, dur));
 542
 543                                         /* and stick it somewhere */
 544                                         icalcomponent_add_property(cptr, ps);
 545                                 }
 546
 547                         }
 548
 549                         /* Dezonify and decapsulate at the very last moment */
 550                         ical_dezonify(Cal->cal);
 551                         if (icalcomponent_isa(Cal->cal) != ICAL_VEVENT_COMPONENT) {
 552                                 cptr = icalcomponent_get_first_component(Cal->cal, ICAL_VEVENT_COMPONENT);
 553                                 if (cptr) {
 554                                         cptr = icalcomponent_new_clone(cptr);
 555                                         icalcomponent_free(Cal->cal);
 556                                         Cal->cal = cptr;
 557                                 }
 558                         }
 559
 560                         if ( (Cal->event_start > calv->lower_bound)
 561                            && (Cal->event_start < calv->upper_bound) ) {
 562                                 Put(WCC->disp_cal_items,
 563                                         (char*) &Cal->event_start,
 564                                         sizeof(Cal->event_start),
 565                                         Cal,
 566                                         delete_cal
 567                                 );
 568                         }
 569                         else {
 570                                 delete_cal(Cal);
 571                         }
 572
 573                         /* If an upper bound is set, stop when we go out of scope */
 574                         if (final_recurrence > calv->upper_bound) stop_rr = 1;
 575                 }
 576         }
 577         icalrecur_iterator_free(ritr);
 578         /* lprintf(9, "Performed %d recurrences; final one is %s", num_recur, ctime(&final_recurrence)); */
 579
 580 }
 581
 582
 583
 584 /*
 585  * Display a task by itself (for editing)
 586  */
 587 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum, char *from,
 588                         int unread, struct calview *calv)
 589 {
 590         icalcomponent *vtodo;
 591         icalproperty *p;
 592         struct icaltimetype IcalTime;
 593         time_t now;
 594         int created_new_vtodo = 0;
 595         icalproperty_status todoStatus;
 596
 597         now = time(NULL);
 598
 599         if (supplied_vtodo != NULL) {
 600                 vtodo = supplied_vtodo;
 601
 602                 /**
 603                  * If we're looking at a fully encapsulated VCALENDAR
 604                  * rather than a VTODO component, attempt to use the first
 605                  * relevant VTODO subcomponent.  If there is none, the
 606                  * NULL returned by icalcomponent_get_first_component() will
 607                  * tell the next iteration of this function to create a
 608                  * new one.
 609                  */
 610                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 611                         display_edit_individual_task(
 612                                 icalcomponent_get_first_component(
 613                                         vtodo, ICAL_VTODO_COMPONENT
 614                                         ),
 615                                 msgnum, from, unread, calv
 616                                 );
 617                         return;
 618                 }
 619         }
 620         else {
 621                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 622                 created_new_vtodo = 1;
 623         }
 624
 625         // TODO: Can we take all this and move it into a template?
 626         output_headers(1, 1, 1, 0, 0, 0);
 627         wprintf("<!-- start task edit form -->");
 628         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 629         // Get summary early for title
 630         wprintf("<div class=\"box\">\n");
 631         wprintf("<div class=\"boxlabel\">");
 632         wprintf(_("Edit task"));
 633         wprintf("- ");
 634         if (p != NULL) {
 635                 escputs((char *)icalproperty_get_comment(p));
 636         }
 637         wprintf("</div>");
 638
 639         wprintf("<div class=\"boxcontent\">\n");
 640         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 641         wprintf("<div style=\"display: none;\">\n       ");
 642         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 643         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 644                 msgnum);
 645         wprintf("</div>");
 646         wprintf("<table class=\"calendar_background\"><tr><td>");
 647         wprintf("<TABLE STYLE=\"border: none;\">\n");
 648
 649         wprintf("<TR><TD>");
 650         wprintf(_("Summary:"));
 651         wprintf("</TD><TD>"
 652                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 653                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 654         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 655         if (p != NULL) {
 656                 escputs((char *)icalproperty_get_comment(p));
 657         }
 658         wprintf("\"></TD></TR>\n");
 659
 660         wprintf("<TR><TD>");
 661         wprintf(_("Start date:"));
 662         wprintf("</TD><TD>");
 663         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 664         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodtstart\" ID=\"nodtstart\" VALUE=\"NODTSTART\" ");
 665         if (p == NULL) {
 666                 wprintf("CHECKED=\"CHECKED\"");
 667         }
 668         wprintf(">");
 669         wprintf(_("No date"));
 670
 671         wprintf(" ");
 672         wprintf(_("or"));
 673         wprintf(" ");
 674         if (p != NULL) {
 675                 IcalTime = icalproperty_get_dtstart(p);
 676         }
 677         else
 678                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 679         display_icaltimetype_as_webform(&IcalTime, "dtstart", 0);
 680         wprintf("</TD></TR>\n");
 681
 682         wprintf("<TR><TD>");
 683         wprintf(_("Due date:"));
 684         wprintf("</TD><TD>");
 685         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 686         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodue\" ID=\"nodue\" VALUE=\"NODUE\"");
 687         if (p == NULL) {
 688                 wprintf("CHECKED=\"CHECKED\"");
 689         }
 690         wprintf(">");
 691         wprintf(_("No date"));
 692         wprintf(" ");
 693         wprintf(_("or"));
 694         wprintf(" ");
 695         if (p != NULL) {
 696                 IcalTime = icalproperty_get_due(p);
 697         }
 698         else
 699                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 700         display_icaltimetype_as_webform(&IcalTime, "due", 0);
 701
 702         wprintf("</TD></TR>\n");
 703         todoStatus = icalcomponent_get_status(vtodo);
 704         wprintf("<TR><TD>\n");
 705         wprintf(_("Completed:"));
 706         wprintf("</TD><TD>");
 707         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"status\" VALUE=\"COMPLETED\"");
 708         if (todoStatus == ICAL_STATUS_COMPLETED) {
 709                 wprintf(" CHECKED=\"CHECKED\"");
 710         }
 711         wprintf(" >");
 712         wprintf("</TD></TR>");
 713         // start category field
 714         p = icalcomponent_get_first_property(vtodo, ICAL_CATEGORIES_PROPERTY);
 715         wprintf("<TR><TD>");
 716         wprintf(_("Category:"));
 717         wprintf("</TD><TD>");
 718         wprintf("<INPUT TYPE=\"text\" NAME=\"category\" MAXLENGTH=\"32\" SIZE=\"32\" VALUE=\"");
 719         if (p != NULL) {
 720                 escputs((char *)icalproperty_get_categories(p));
 721         }
 722         wprintf("\">");
 723         wprintf("</TD></TR>\n   ");
 724         // end category field
 725         wprintf("<TR><TD>");
 726         wprintf(_("Description:"));
 727         wprintf("</TD><TD>");
 728         wprintf("<TEXTAREA NAME=\"description\" "
 729                 "ROWS=\"10\" COLS=\"80\">\n"
 730                 );
 731         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 732         if (p != NULL) {
 733                 escputs((char *)icalproperty_get_comment(p));
 734         }
 735         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 736
 737         wprintf("<SPAN STYLE=\"text-align: center;\">"
 738                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 739                 "&nbsp;&nbsp;"
 740                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 741                 "&nbsp;&nbsp;"
 742                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 743                 "</SPAN>\n",
 744                 _("Save"),
 745                 _("Delete"),
 746                 _("Cancel")
 747                 );
 748         wprintf("</td></tr></table>");
 749         wprintf("</FORM>\n");
 750         wprintf("</div></div></div>\n");
 751         wprintf("<!-- end task edit form -->");
 752         wDumpContent(1);
 753
 754         if (created_new_vtodo) {
 755                 icalcomponent_free(vtodo);
 756         }
 757 }
 758
 759 /*
 760  * \brief Save an edited task
 761  * \param supplied_vtodo the task to save
 762  * \param msgnum number of the mesage in our db
 763  */
 764 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum, char* from, int unread,
 765                                 struct calview *calv)
 766 {
 767         char buf[SIZ];
 768         int delete_existing = 0;
 769         icalproperty *prop;
 770         icalcomponent *vtodo, *encaps;
 771         int created_new_vtodo = 0;
 772         int i;
 773         int sequence = 0;
 774         struct icaltimetype t;
 775
 776         if (supplied_vtodo != NULL) {
 777                 vtodo = supplied_vtodo;
 778                 /**
 779                  * If we're looking at a fully encapsulated VCALENDAR
 780                  * rather than a VTODO component, attempt to use the first
 781                  * relevant VTODO subcomponent.  If there is none, the
 782                  * NULL returned by icalcomponent_get_first_component() will
 783                  * tell the next iteration of this function to create a
 784                  * new one.
 785                  */
 786                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 787                         save_individual_task(
 788                                 icalcomponent_get_first_component(
 789                                         vtodo, ICAL_VTODO_COMPONENT),
 790                                 msgnum, from, unread, calv
 791                                 );
 792                         return;
 793                 }
 794         }
 795         else {
 796                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 797                 created_new_vtodo = 1;
 798         }
 799
 800         if (havebstr("save_button")) {
 801
 802                 /** Replace values in the component with ones from the form */
 803
 804                 while (prop = icalcomponent_get_first_property(vtodo,
 805                                                                ICAL_SUMMARY_PROPERTY), prop != NULL) {
 806                         icalcomponent_remove_property(vtodo, prop);
 807                         icalproperty_free(prop);
 808                 }
 809                 if (havebstr("summary")) {
 810
 811                         icalcomponent_add_property(vtodo,
 812                                                    icalproperty_new_summary(bstr("summary")));
 813                 } else {
 814                         icalcomponent_add_property(vtodo,
 815                                                    icalproperty_new_summary("Untitled Task"));
 816                 }
 817
 818                 while (prop = icalcomponent_get_first_property(vtodo,
 819                                                                ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 820                         icalcomponent_remove_property(vtodo, prop);
 821                         icalproperty_free(prop);
 822                 }
 823                 if (havebstr("description")) {
 824                         icalcomponent_add_property(vtodo,
 825                                                    icalproperty_new_description(bstr("description")));
 826                 }
 827
 828                 while (prop = icalcomponent_get_first_property(vtodo,
 829                                                                ICAL_DTSTART_PROPERTY), prop != NULL) {
 830                         icalcomponent_remove_property(vtodo, prop);
 831                         icalproperty_free(prop);
 832                 }
 833                 if (IsEmptyStr(bstr("nodtstart"))) {
 834                         icaltime_from_webform(&t, "dtstart");
 835                         icalcomponent_add_property(vtodo,
 836                                                    icalproperty_new_dtstart(t)
 837                                 );
 838                 }
 839                 while(prop = icalcomponent_get_first_property(vtodo,
 840                                                               ICAL_STATUS_PROPERTY), prop != NULL) {
 841                         icalcomponent_remove_property(vtodo,prop);
 842                         icalproperty_free(prop);
 843                 }
 844                 if (havebstr("status")) {
 845                         icalproperty_status taskStatus = icalproperty_string_to_status(
 846                                 bstr("status"));
 847                         icalcomponent_set_status(vtodo, taskStatus);
 848                 }
 849                 while (prop = icalcomponent_get_first_property(vtodo,
 850                                                                ICAL_CATEGORIES_PROPERTY), prop != NULL) {
 851                         icalcomponent_remove_property(vtodo,prop);
 852                         icalproperty_free(prop);
 853                 }
 854                 if (!IsEmptyStr(bstr("category"))) {
 855                         prop = icalproperty_new_categories(bstr("category"));
 856                         icalcomponent_add_property(vtodo,prop);
 857                 }
 858                 while (prop = icalcomponent_get_first_property(vtodo,
 859                                                                ICAL_DUE_PROPERTY), prop != NULL) {
 860                         icalcomponent_remove_property(vtodo, prop);
 861                         icalproperty_free(prop);
 862                 }
 863                 if (IsEmptyStr(bstr("nodue"))) {
 864                         icaltime_from_webform(&t, "due");
 865                         icalcomponent_add_property(vtodo,
 866                                                    icalproperty_new_due(t)
 867                                 );
 868                 }
 869                 /** Give this task a UID if it doesn't have one. */
 870                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 871                 if (icalcomponent_get_first_property(vtodo,
 872                                                      ICAL_UID_PROPERTY) == NULL) {
 873                         generate_uuid(buf);
 874                         icalcomponent_add_property(vtodo,
 875                                                    icalproperty_new_uid(buf)
 876                                 );
 877                 }
 878
 879                 /** Increment the sequence ID */
 880                 lprintf(9, "Increment the sequence ID\n");
 881                 while (prop = icalcomponent_get_first_property(vtodo,
 882                                                                ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 883                         i = icalproperty_get_sequence(prop);
 884                         lprintf(9, "Sequence was %d\n", i);
 885                         if (i > sequence) sequence = i;
 886                         icalcomponent_remove_property(vtodo, prop);
 887                         icalproperty_free(prop);
 888                 }
 889                 ++sequence;
 890                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 891                 icalcomponent_add_property(vtodo,
 892                                            icalproperty_new_sequence(sequence)
 893                         );
 894
 895                 /**
 896                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 897                  * for two reasons: one, it's easier to just free the whole thing
 898                  * when we're done instead of unbundling, but more importantly, we
 899                  * can't encapsulate something that may already be encapsulated
 900                  * somewhere else.
 901                  */
 902                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 903                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 904
 905                 /* Serialize it and save it to the message base */
 906                 serv_puts("ENT0 1|||4");
 907                 serv_getln(buf, sizeof buf);
 908                 if (buf[0] == '4') {
 909                         serv_puts("Content-type: text/calendar");
 910                         serv_puts("");
 911                         serv_puts(icalcomponent_as_ical_string(encaps));
 912                         serv_puts("000");
 913
 914                         /**
 915                          * Probably not necessary; the server will see the UID
 916                          * of the object and delete the old one anyway, but
 917                          * just in case...
 918                          */
 919                         delete_existing = 1;
 920                 }
 921                 icalcomponent_free(encaps);
 922         }
 923
 924         /**
 925          * If the user clicked 'Delete' then explicitly delete the message.
 926          */
 927         if (havebstr("delete_button")) {
 928                 delete_existing = 1;
 929         }
 930
 931         if ( (delete_existing) && (msgnum > 0L) ) {
 932                 serv_printf("DELE %ld", lbstr("msgnum"));
 933                 serv_getln(buf, sizeof buf);
 934         }
 935
 936         if (created_new_vtodo) {
 937                 icalcomponent_free(vtodo);
 938         }
 939
 940         /** Go back to the task list */
 941         readloop(readfwd);
 942 }
 943
 944
 945
 946 /*
 947  * Code common to all icalendar display handlers.  Given a message number and a MIME
 948  * type, we load the message and hunt for that MIME type.  If found, we load
 949  * the relevant part, deserialize it into a libical component, filter it for
 950  * the requested object type, and feed it to the specified handler.
 951  */
 952 void load_ical_object(long msgnum, int unread,
 953                            icalcomponent_kind which_kind,
 954                            void (*callback)(icalcomponent *, long, char*, int, struct calview *),
 955                            struct calview *calv
 956         )
 957 {
 958         char buf[1024];
 959         char from[128] = "";
 960         char mime_partnum[256];
 961         char mime_filename[256];
 962         char mime_content_type[256];
 963         char mime_disposition[256];
 964         int mime_length;
 965         char relevant_partnum[256];
 966         char *relevant_source = NULL;
 967         icalcomponent *cal, *c;
 968
 969         relevant_partnum[0] = '\0';
 970         sprintf(buf, "MSG4 %ld", msgnum);       /* we need the mime headers */
 971         serv_puts(buf);
 972         serv_getln(buf, sizeof buf);
 973         if (buf[0] != '1') return;
 974
 975         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 976                 if (!strncasecmp(buf, "part=", 5)) {
 977                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 978                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 979                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 980                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 981                         mime_length = extract_int(&buf[5], 5);
 982
 983                         if (  (!strcasecmp(mime_content_type, "text/calendar"))
 984                               || (!strcasecmp(mime_content_type, "application/ics"))
 985                               || (!strcasecmp(mime_content_type, "text/vtodo"))
 986                                 ) {
 987                                 strcpy(relevant_partnum, mime_partnum);
 988                         }
 989                 }
 990                 else if (!strncasecmp(buf, "from=", 4)) {
 991                         extract_token(from, buf, 1, '=', sizeof(from));
 992                 }
 993         }
 994
 995         if (!IsEmptyStr(relevant_partnum)) {
 996                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 997                 if (relevant_source != NULL) {
 998
 999                         cal = icalcomponent_new_from_string(relevant_source);
1000                         if (cal != NULL) {
1001
1002                                 /* A which_kind of (-1) means just load the whole thing */
1003                                 if (which_kind == (-1)) {
1004                                         callback(cal, msgnum, from, unread, calv);
1005                                 }
1006
1007                                 /* Otherwise recurse and hunt */
1008                                 else {
1009
1010                                         /* Simple components of desired type */
1011                                         if (icalcomponent_isa(cal) == which_kind) {
1012                                                 callback(cal, msgnum, from, unread, calv);
1013                                         }
1014
1015                                         /* Subcomponents of desired type */
1016                                         for (c = icalcomponent_get_first_component(cal, which_kind);
1017                                         (c != 0);
1018                                         c = icalcomponent_get_next_component(cal, which_kind)) {
1019                                                 callback(c, msgnum, from, unread, calv);
1020                                         }
1021
1022                                 }
1023
1024                                 icalcomponent_free(cal);
1025                         }
1026                         free(relevant_source);
1027                 }
1028         }
1029         icalmemory_free_ring();
1030 }
1031
1032 /*
1033  * Display a calendar item
1034  */
1035 void load_calendar_item(message_summary *Msg, int unread, struct calview *c) {
1036         /*load_ical_object(Msg->msgnum, unread, ICAL_VEVENT_COMPONENT, display_individual_cal, c);*/
1037         load_ical_object(Msg->msgnum, unread, (-1), display_individual_cal, c);
1038 }
1039
1040 /*
1041  * Display task view
1042  */
1043 void display_task(message_summary *Msg, int unread) {
1044         load_ical_object(Msg->msgnum, unread, ICAL_VTODO_COMPONENT, display_individual_cal, NULL);
1045 }
1046
1047 /*
1048  * Display the editor component for a task
1049  */
1050 void display_edit_task(void) {
1051         long msgnum = 0L;
1052
1053         /* Force change the room if we have to */
1054         if (havebstr("taskrm")) {
1055                 gotoroom((char *)bstr("taskrm"));
1056         }
1057
1058         msgnum = lbstr("msgnum");
1059         if (msgnum > 0L) {
1060                 /* existing task */
1061                 load_ical_object(msgnum, 0,
1062                                       ICAL_VTODO_COMPONENT,
1063                                       display_edit_individual_task,
1064                                       NULL
1065                 );
1066         }
1067         else {
1068                 /* new task */
1069                 display_edit_individual_task(NULL, 0L, "", 0, NULL);
1070         }
1071 }
1072
1073 /*
1074  * save an edited task
1075  */
1076 void save_task(void) {
1077         long msgnum = 0L;
1078         msgnum = lbstr("msgnum");
1079         if (msgnum > 0L) {
1080                 load_ical_object(msgnum, 0, ICAL_VTODO_COMPONENT, save_individual_task, NULL);
1081         }
1082         else {
1083                 save_individual_task(NULL, 0L, "", 0, NULL);
1084         }
1085 }
1086
1087 /*
1088  * display the editor component for an event
1089  */
1090 void display_edit_event(void) {
1091         long msgnum = 0L;
1092
1093         msgnum = lbstr("msgnum");
1094         if (msgnum > 0L) {
1095                 /* existing event */
1096                 load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, display_edit_individual_event, NULL);
1097         }
1098         else {
1099                 /* new event */
1100                 display_edit_individual_event(NULL, 0L, "", 0, NULL);
1101         }
1102 }
1103
1104 /*
1105  * save an edited event
1106  */
1107 void save_event(void) {
1108         long msgnum = 0L;
1109
1110         msgnum = lbstr("msgnum");
1111
1112         if (msgnum > 0L) {
1113                 /* load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, save_individual_event, NULL); */
1114                 load_ical_object(msgnum, 0, (-1), save_individual_event, NULL);
1115         }
1116         else {
1117                 save_individual_event(NULL, 0L, "", 0, NULL);
1118         }
1119 }
1120
1121
1122
1123
1124
1125 /*
1126  * Anonymous request of freebusy data for a user
1127  */
1128 void do_freebusy(const char *req) {
1129         char who[SIZ];
1130         char buf[SIZ];
1131         int len;
1132         long lines;
1133
1134         extract_token(who, req, 1, ' ', sizeof who);
1135         if (!strncasecmp(who, "/freebusy/", 10)) {
1136                 strcpy(who, &who[10]);
1137         }
1138         unescape_input(who);
1139
1140         len = strlen(who);
1141         if ( (!strcasecmp(&who[len-4], ".vcf"))
1142              || (!strcasecmp(&who[len-4], ".ifb"))
1143              || (!strcasecmp(&who[len-4], ".vfb")) ) {
1144                 who[len-4] = 0;
1145         }
1146
1147         lprintf(9, "freebusy requested for <%s>\n", who);
1148         serv_printf("ICAL freebusy|%s", who);
1149         serv_getln(buf, sizeof buf);
1150
1151         if (buf[0] != '1') {
1152                 hprintf("HTTP/1.1 404 %s\n", &buf[4]);
1153                 output_headers(0, 0, 0, 0, 0, 0);
1154                 hprintf("Content-Type: text/plain\r\n");
1155                 wprintf("%s\n", &buf[4]);
1156                 end_burst();
1157                 return;
1158         }
1159
1160         read_server_text(WC->WBuf, &lines);
1161         http_transmit_thing("text/calendar", 0);
1162 }
1163
1164
1165
1166
1167
1168 void
1169 InitModule_CALENDAR
1170 (void)
1171 {
1172         WebcitAddUrlHandler(HKEY("display_edit_task"), display_edit_task, 0);
1173         WebcitAddUrlHandler(HKEY("save_task"), save_task, 0);
1174         WebcitAddUrlHandler(HKEY("display_edit_event"), display_edit_event, 0);
1175         WebcitAddUrlHandler(HKEY("save_event"), save_event, 0);
1176         WebcitAddUrlHandler(HKEY("respond_to_request"), respond_to_request, 0);
1177         WebcitAddUrlHandler(HKEY("handle_rsvp"), handle_rsvp, 0);
1178 }