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