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         /* Leading HTML for the display of this object */
  41         if (recursion_level == 0) {
  42                 StrBufAppendPrintf(Target, "<div class=\"mimepart\">\n");
  43         }
  44
  45         /* Look for a method */
  46         method = icalcomponent_get_first_property(cal, ICAL_METHOD_PROPERTY);
  47
  48         /* See what we need to do with this */
  49         if (method != NULL) {
  50                 the_method = icalproperty_get_method(method);
  51                 char *title;
  52
  53                 StrBufAppendPrintf(Target, "<div id=\"%s_title\">", divname);
  54                 StrBufAppendPrintf(Target, "<img src=\"static/calarea_48x.gif\">");
  55                 StrBufAppendPrintf(Target, "<span>");
  56                 switch(the_method) {
  57                 case ICAL_METHOD_REQUEST:
  58                         title = _("Meeting invitation");
  59                         break;
  60                 case ICAL_METHOD_REPLY:
  61                         title = _("Attendee's reply to your invitation");
  62                         break;
  63                 case ICAL_METHOD_PUBLISH:
  64                         title = _("Published event");
  65                         break;
  66                 default:
  67                         title = _("This is an unknown type of calendar item.");
  68                         break;
  69                 }
  70                 StrBufAppendPrintf(Target, "</span>");
  71
  72                 StrBufAppendPrintf(Target, "&nbsp;&nbsp;%s",title);
  73                 StrBufAppendPrintf(Target, "</div>");
  74         }
  75
  76         StrBufAppendPrintf(Target, "<dl>");
  77         p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
  78         if (p != NULL) {
  79                 StrBufAppendPrintf(Target, "<dt>");
  80                 StrBufAppendPrintf(Target, _("Summary:"));
  81                 StrBufAppendPrintf(Target, "</dt><dd>");
  82                 StrEscAppend(Target, NULL, (char *)icalproperty_get_comment(p), 0, 0);
  83                 StrBufAppendPrintf(Target, "</dd>\n");
  84         }
  85
  86         p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
  87         if (p != NULL) {
  88                 StrBufAppendPrintf(Target, "<dt>");
  89                 StrBufAppendPrintf(Target, _("Location:"));
  90                 StrBufAppendPrintf(Target, "</dt><dd>");
  91                 StrEscAppend(Target, NULL, (char *)icalproperty_get_comment(p), 0, 0);
  92                 StrBufAppendPrintf(Target, "</dd>\n");
  93         }
  94
  95         /*
  96          * Only show start/end times if we're actually looking at the VEVENT
  97          * component.  Otherwise it shows bogus dates for things like timezone.
  98          */
  99         if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
 100
 101                 p = icalcomponent_get_first_property(cal, ICAL_DTSTART_PROPERTY);
 102                 if (p != NULL) {
 103                         t = icalproperty_get_dtstart(p);
 104
 105                         if (t.is_date) {
 106                                 struct tm d_tm;
 107                                 char d_str[32];
 108                                 memset(&d_tm, 0, sizeof d_tm);
 109                                 d_tm.tm_year = t.year - 1900;
 110                                 d_tm.tm_mon = t.month - 1;
 111                                 d_tm.tm_mday = t.day;
 112                                 wc_strftime(d_str, sizeof d_str, "%x", &d_tm);
 113                                 StrBufAppendPrintf(Target, "<dt>");
 114                                 StrBufAppendPrintf(Target, _("Date:"));
 115                                 StrBufAppendPrintf(Target, "</dt><dd>%s</dd>", d_str);
 116                         }
 117                         else {
 118                                 tt = icaltime_as_timet(t);
 119                                 webcit_fmt_date(buf, tt, 0);
 120                                 StrBufAppendPrintf(Target, "<dt>");
 121                                 StrBufAppendPrintf(Target, _("Starting date/time:"));
 122                                 StrBufAppendPrintf(Target, "</dt><dd>%s</dd>", buf);
 123                         }
 124                 }
 125
 126                 p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
 127                 if (p != NULL) {
 128                         t = icalproperty_get_dtend(p);
 129                         tt = icaltime_as_timet(t);
 130                         webcit_fmt_date(buf, tt, 0);
 131                         StrBufAppendPrintf(Target, "<dt>");
 132                         StrBufAppendPrintf(Target, _("Ending date/time:"));
 133                         StrBufAppendPrintf(Target, "</dt><dd>%s</dd>", buf);
 134                 }
 135
 136         }
 137
 138         p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
 139         if (p != NULL) {
 140                 StrBufAppendPrintf(Target, "<dt>");
 141                 StrBufAppendPrintf(Target, _("Description:"));
 142                 StrBufAppendPrintf(Target, "</dt><dd>");
 143                 StrEscAppend(Target, NULL, (char *)icalproperty_get_comment(p), 0, 0);
 144                 StrBufAppendPrintf(Target, "</dd>\n");
 145         }
 146
 147         /* If the component has attendees, iterate through them. */
 148         for (p = icalcomponent_get_first_property(cal, ICAL_ATTENDEE_PROPERTY);
 149              (p != NULL);
 150              p = icalcomponent_get_next_property(cal, ICAL_ATTENDEE_PROPERTY)) {
 151                 StrBufAppendPrintf(Target, "<dt>");
 152                 StrBufAppendPrintf(Target, _("Attendee:"));
 153                 StrBufAppendPrintf(Target, "</dt><dd>");
 154                 safestrncpy(buf, icalproperty_get_attendee(p), sizeof buf);
 155                 if (!strncasecmp(buf, "MAILTO:", 7)) {
 156
 157                         /** screen name or email address */
 158                         strcpy(buf, &buf[7]);
 159                         striplt(buf);
 160                         StrEscAppend(Target, NULL, buf, 0, 0);
 161                         StrBufAppendPrintf(Target, " ");
 162
 163                         /** participant status */
 164                         partstat_as_string(buf, p);
 165                         StrEscAppend(Target, NULL, buf, 0, 0);
 166                 }
 167                 StrBufAppendPrintf(Target, "</dd>\n");
 168         }
 169
 170         /* If the component has subcomponents, recurse through them. */
 171         for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
 172              (c != 0);
 173              c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
 174                 /* Recursively process subcomponent */
 175                 cal_process_object(Target, c, recursion_level+1, msgnum, cal_partnum);
 176         }
 177
 178         /* If this is a REQUEST, display conflicts and buttons */
 179         if (the_method == ICAL_METHOD_REQUEST) {
 180
 181                 /* Check for conflicts */
 182                 lprintf(9, "Checking server calendar for conflicts...\n");
 183                 serv_printf("ICAL conflicts|%ld|%s|", msgnum, cal_partnum);
 184                 serv_getln(buf, sizeof buf);
 185                 if (buf[0] == '1') {
 186                         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 187                                 extract_token(conflict_name, buf, 3, '|', sizeof conflict_name);
 188                                 is_update = extract_int(buf, 4);
 189
 190                                 if (is_update) {
 191                                         snprintf(conflict_message, sizeof conflict_message,
 192                                                  _("This is an update of '%s' which is already in your calendar."), conflict_name);
 193                                 }
 194                                 else {
 195                                         snprintf(conflict_message, sizeof conflict_message,
 196                                                  _("This event would conflict with '%s' which is already in your calendar."), conflict_name);
 197                                 }
 198
 199                                 StrBufAppendPrintf(Target, "<dt>%s",
 200                                         (is_update ?
 201                                          _("Update:") :
 202                                          _("CONFLICT:")
 203                                                 )
 204                                         );
 205                                 StrBufAppendPrintf(Target, "</dt><dd>");
 206                                 StrEscAppend(Target, NULL, conflict_message, 0, 0);
 207                                 StrBufAppendPrintf(Target, "</dd>\n");
 208                         }
 209                 }
 210                 lprintf(9, "...done.\n");
 211
 212                 StrBufAppendPrintf(Target, "</dl>");
 213
 214                 /* Display the Accept/Decline buttons */
 215                 StrBufAppendPrintf(Target, "<p id=\"%s_question\">"
 216                         "%s "
 217                         "&nbsp;&nbsp;&nbsp;<span class=\"button_link\"> "
 218                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Accept');\">%s</a>"
 219                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 220                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Tentative');\">%s</a>"
 221                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 222                         "<a href=\"javascript:RespondToInvitation('%s_question','%s_title','%ld','%s','Decline');\">%s</a>"
 223                         "</span></p>\n",
 224                         divname,
 225                         _("How would you like to respond to this invitation?"),
 226                         divname, divname, msgnum, cal_partnum, _("Accept"),
 227                         divname, divname, msgnum, cal_partnum, _("Tentative"),
 228                         divname, divname, msgnum, cal_partnum, _("Decline")
 229                         );
 230
 231         }
 232
 233         /* If this is a REPLY, display update button */
 234         if (the_method == ICAL_METHOD_REPLY) {
 235
 236                 /* In the future, if we want to validate this object before
 237                  * continuing, we can do it this way:
 238                  serv_printf("ICAL whatever|%ld|%s|", msgnum, cal_partnum);
 239                  serv_getln(buf, sizeof buf);
 240                  }
 241                 ***********/
 242
 243                 /* Display the update buttons */
 244                 StrBufAppendPrintf(Target, "<p id=\"%s_question\" >"
 245                         "%s "
 246                         "&nbsp;&nbsp;&nbsp;<span class=\"button_link\"> "
 247                         "<a href=\"javascript:HandleRSVP('%s_question','%s_title','%ld','%s','Update');\">%s</a>"
 248                         "</span>&nbsp;&nbsp;&nbsp;<span class=\"button_link\">"
 249                         "<a href=\"javascript:HandleRSVP('%s_question','%s_title','%ld','%s','Ignore');\">%s</a>"
 250                         "</span></p>\n",
 251                         divname,
 252                         _("Click <i>Update</i> to accept this reply and update your calendar."),
 253                         divname, divname, msgnum, cal_partnum, _("Update"),
 254                         divname, divname, msgnum, cal_partnum, _("Ignore")
 255                         );
 256
 257         }
 258
 259         /* Trailing HTML for the display of this object */
 260         if (recursion_level == 0) {
 261                 StrBufAppendPrintf(Target, "<p>&nbsp;</p></div>\n");
 262         }
 263 }
 264
 265
 266 /**
 267  * \brief process calendar mail atachment
 268  * Deserialize a calendar object in a message so it can be processed.
 269  * (This is the main entry point for these things)
 270  * \param part_source the part of the message we want to parse
 271  * \param msgnum number of the mesage in our db
 272  * \param cal_partnum the number of the calendar item
 273  */
 274 void cal_process_attachment(wc_mime_attachment *Mime)
 275 {
 276         icalcomponent *cal;
 277
 278         cal = icalcomponent_new_from_string(ChrPtr(Mime->Data));
 279         FlushStrBuf(Mime->Data);
 280         if (cal == NULL) {
 281                 StrBufAppendPrintf(Mime->Data, _("There was an error parsing this calendar item."));
 282                 StrBufAppendPrintf(Mime->Data, "<br />\n");
 283                 return;
 284         }
 285
 286         cal_process_object(Mime->Data, cal, 0, Mime->msgnum, ChrPtr(Mime->PartNum));
 287
 288         /* Free the memory we obtained from libical's constructor */
 289         icalcomponent_free(cal);
 290 }
 291
 292
 293
 294
 295 /**
 296  * \brief accept/decline meeting
 297  * Respond to a meeting request
 298  */
 299 void respond_to_request(void)
 300 {
 301         char buf[1024];
 302
 303         begin_ajax_response();
 304
 305         serv_printf("ICAL respond|%s|%s|%s|",
 306                 bstr("msgnum"),
 307                 bstr("cal_partnum"),
 308                 bstr("sc")
 309         );
 310         serv_getln(buf, sizeof buf);
 311
 312         if (buf[0] == '2') {
 313                 wprintf("<img src=\"static/calarea_48x.gif\"><span>");
 314                 if (!strcasecmp(bstr("sc"), "accept")) {
 315                         wprintf(_("You have accepted this meeting invitation.  "
 316                                 "It has been entered into your calendar.")
 317                         );
 318                 } else if (!strcasecmp(bstr("sc"), "tentative")) {
 319                         wprintf(_("You have tentatively accepted this meeting invitation.  "
 320                                 "It has been 'pencilled in' to your calendar.")
 321                         );
 322                 } else if (!strcasecmp(bstr("sc"), "decline")) {
 323                         wprintf(_("You have declined this meeting invitation.  "
 324                                   "It has <b>not</b> been entered into your calendar.")
 325                                 );
 326                 }
 327                 wprintf(" ");
 328                 wprintf(_("A reply has been sent to the meeting organizer."));
 329                 wprintf("</span>");
 330         } else {
 331                 wprintf("<img align=\"center\" src=\"static/error.gif\"><span>");
 332                 wprintf("%s\n", &buf[4]);
 333                 wprintf("</span>");
 334         }
 335
 336         end_ajax_response();
 337 }
 338
 339
 340
 341 /**
 342  * \brief Handle an incoming RSVP
 343  */
 344 void handle_rsvp(void)
 345 {
 346         char buf[1024];
 347
 348         begin_ajax_response();
 349
 350         serv_printf("ICAL handle_rsvp|%s|%s|%s|",
 351                 bstr("msgnum"),
 352                 bstr("cal_partnum"),
 353                 bstr("sc")
 354         );
 355         serv_getln(buf, sizeof buf);
 356
 357         if (buf[0] == '2') {
 358                 wprintf("<img src=\"static/calarea_48x.gif\"><span>");
 359                 if (!strcasecmp(bstr("sc"), "update")) {
 360                         wprintf(_("Your calendar has been updated to reflect this RSVP."));
 361                 } else if (!strcasecmp(bstr("sc"), "ignore")) {
 362                         wprintf(_("You have chosen to ignore this RSVP. "
 363                                   "Your calendar has <b>not</b> been updated.")
 364                                 );
 365                 }
 366                 wprintf("</span>");
 367         } else {
 368                 wprintf("<img src=\"static/error.gif\"><span> %s\n", &buf[4]);
 369                 wprintf("</span>");
 370         }
 371
 372         end_ajax_response();
 373 }
 374
 375
 376
 377 int Flathash(const char *str, long len)
 378 {
 379         if (len != sizeof (int))
 380                 return 0;
 381         else return *(int*)str;
 382 }
 383
 384
 385
 386 /*
 387  * free memory allocated using libical
 388  */
 389 void delete_cal(void *vCal)
 390 {
 391         disp_cal *Cal = (disp_cal*) vCal;
 392         icalcomponent_free(Cal->cal);
 393         free(Cal->from);
 394         free(Cal);
 395 }
 396
 397 /*
 398  * This is the meat-and-bones of the first part of our two-phase calendar display.
 399  * As we encounter calendar items in messages being read from the server, we break out
 400  * any iCalendar objects and store them in a hash table.  Later on, the second phase will
 401  * use this hash table to render the calendar for display.
 402  */
 403 void display_individual_cal(icalcomponent *cal, long msgnum, char *from, int unread, struct calview *calv)
 404 {
 405         icalproperty *ps = NULL;
 406         struct icaltimetype dtstart, dtend;
 407         struct icaldurationtype dur;
 408         struct wcsession *WCC = WC;
 409         disp_cal *Cal;
 410         size_t len;
 411         time_t final_recurrence = 0;
 412
 413         /* recur variables */
 414         icalproperty *rrule = NULL;
 415         struct icalrecurrencetype recur;
 416         icalrecur_iterator *ritr = NULL;
 417         struct icaltimetype next;
 418         int num_recur = 0;
 419
 420         dtstart = icaltime_null_time();
 421         dtend = icaltime_null_time();
 422
 423         if (WCC->disp_cal_items == NULL)
 424                 WCC->disp_cal_items = NewHash(0, Flathash);
 425
 426         /* Note: anything we do here, we also have to do below for the recurrences. */
 427         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 428         memset(Cal, 0, sizeof(disp_cal));
 429         Cal->cal = icalcomponent_new_clone(cal);
 430
 431         /* Dezonify and decapsulate at the very last moment */
 432         ical_dezonify(Cal->cal);
 433         icalcomponent *cptr;
 434         if (icalcomponent_isa(Cal->cal) != ICAL_VEVENT_COMPONENT) {
 435                 cptr = icalcomponent_get_first_component(Cal->cal, ICAL_VEVENT_COMPONENT);
 436                 if (cptr) {
 437                         cptr = icalcomponent_new_clone(cptr);
 438                         icalcomponent_free(Cal->cal);
 439                         Cal->cal = cptr;
 440                 }
 441         }
 442
 443         Cal->unread = unread;
 444         len = strlen(from);
 445         Cal->from = (char*)malloc(len+ 1);
 446         memcpy(Cal->from, from, len + 1);
 447         Cal->cal_msgnum = msgnum;
 448
 449         /* Precalculate the starting date and time of this event, and store it in our top-level
 450          * structure.  Later, when we are rendering the calendar, we can just peek at these values
 451          * without having to break apart every calendar item.
 452          */
 453         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 454         if (ps != NULL) {
 455                 dtstart = icalproperty_get_dtstart(ps);
 456                 Cal->event_start = icaltime_as_timet(dtstart);
 457                 lprintf(9, "\e[31mINITIAL: %s, is_utc=%d, tzid=%s\e[0m\n",
 458                         icaltime_as_ical_string(dtstart),
 459                         icaltime_is_utc(dtstart),
 460                         icaltime_get_tzid(dtstart)
 461                 );
 462         }
 463
 464         /* Do the same for the ending date and time.  It makes the day view much easier to render. */
 465         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 466         if (ps != NULL) {
 467                 dtend = icalproperty_get_dtend(ps);
 468                 Cal->event_end = icaltime_as_timet(dtend);
 469         }
 470
 471         /* Store it in the hash list. */
 472         Put(WCC->disp_cal_items,
 473             (char*) &Cal->event_start,
 474             sizeof(Cal->event_start),
 475             Cal,
 476             delete_cal);
 477
 478         /* handle recurring events */
 479
 480         if (icaltime_is_null_time(dtstart)) return;     /* Can't recur without a start time */
 481
 482         if (!icaltime_is_null_time(dtend)) {            /* Need duration for recurrences */
 483                 dur = icaltime_subtract(dtend, dtstart);
 484         }
 485
 486         /*
 487          * Just let libical iterate the recurrence, and keep looping back to the top of this function,
 488          * adding new hash entries that all point back to the same msgnum, until either the iteration
 489          * stops or some outer bound is reached.  The display code will automatically do the Right Thing.
 490          */
 491         rrule = icalcomponent_get_first_property(Cal->cal, ICAL_RRULE_PROPERTY);
 492         if (!rrule) return;
 493         recur = icalproperty_get_rrule(rrule);
 494         ritr = icalrecur_iterator_new(recur, dtstart);
 495         if (!ritr) return;
 496
 497         int stop_rr = 0;
 498         while (next = icalrecur_iterator_next(ritr), ((!icaltime_is_null_time(next))&&(!stop_rr)) ) {
 499                 ++num_recur;
 500                 if (num_recur > 1) {            /* Skip the first one.  We already did it at the root. */
 501
 502                         /* Note: anything we do here, we also have to do above for the root event. */
 503                         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 504                         memset(Cal, 0, sizeof(disp_cal));
 505                         Cal->cal = icalcomponent_new_clone(cal);
 506                         Cal->unread = unread;
 507                         len = strlen(from);
 508                         Cal->from = (char*)malloc(len+ 1);
 509                         memcpy(Cal->from, from, len + 1);
 510                         Cal->cal_msgnum = msgnum;
 511
 512                         icalcomponent *cptr;
 513                         if (icalcomponent_isa(Cal->cal) == ICAL_VEVENT_COMPONENT) {
 514                                 cptr = Cal->cal;
 515                         }
 516                         else {
 517                                 cptr = icalcomponent_get_first_component(Cal->cal, ICAL_VEVENT_COMPONENT);
 518                         }
 519                         if (cptr) {
 520                                 ps = icalcomponent_get_first_property(cptr, ICAL_DTSTART_PROPERTY);
 521                                 if (ps != NULL) {
 522                                         icalcomponent_remove_property(cptr, ps);
 523                                         ps = icalproperty_new_dtstart(next);
 524                                         icalcomponent_add_property(cptr, ps);
 525
 526                                         Cal->event_start = icaltime_as_timet(next);
 527                                         lprintf(9, "\e[32mREPEATS: %s, is_utc=%d, tzid=%s\e[0m\n",
 528                                                 icaltime_as_ical_string(next),
 529                                                 icaltime_is_utc(next),
 530                                                 icaltime_get_tzid(next)
 531                                         );
 532                                         final_recurrence = Cal->event_start;
 533                                 }
 534
 535                                 ps = icalcomponent_get_first_property(cptr, ICAL_DTEND_PROPERTY);
 536                                 if (ps != NULL) {
 537                                         icalcomponent_remove_property(cptr, ps);
 538
 539                                         /* Make a new dtend */
 540                                         ps = icalproperty_new_dtend(icaltime_add(next, dur));
 541
 542                                         /* and stick it somewhere */
 543                                         icalcomponent_add_property(cptr, ps);
 544                                 }
 545
 546                         }
 547
 548                         /* Dezonify and decapsulate at the very last moment */
 549                         ical_dezonify(Cal->cal);
 550                         if (icalcomponent_isa(Cal->cal) != ICAL_VEVENT_COMPONENT) {
 551                                 cptr = icalcomponent_get_first_component(Cal->cal, ICAL_VEVENT_COMPONENT);
 552                                 if (cptr) {
 553                                         cptr = icalcomponent_new_clone(cptr);
 554                                         icalcomponent_free(Cal->cal);
 555                                         Cal->cal = cptr;
 556                                 }
 557                         }
 558
 559                         if ( (Cal->event_start > calv->lower_bound)
 560                            && (Cal->event_start < calv->upper_bound) ) {
 561                                 Put(WCC->disp_cal_items,
 562                                         (char*) &Cal->event_start,
 563                                         sizeof(Cal->event_start),
 564                                         Cal,
 565                                         delete_cal
 566                                 );
 567                         }
 568                         else {
 569                                 delete_cal(Cal);
 570                         }
 571
 572                         /* If an upper bound is set, stop when we go out of scope */
 573                         if (final_recurrence > calv->upper_bound) stop_rr = 1;
 574                 }
 575         }
 576         icalrecur_iterator_free(ritr);
 577         /* lprintf(9, "Performed %d recurrences; final one is %s", num_recur, ctime(&final_recurrence)); */
 578
 579 }
 580
 581
 582
 583 /*
 584  * Display a task by itself (for editing)
 585  */
 586 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum, char *from,
 587                         int unread, struct calview *calv)
 588 {
 589         icalcomponent *vtodo;
 590         icalproperty *p;
 591         struct icaltimetype IcalTime;
 592         time_t now;
 593         int created_new_vtodo = 0;
 594         icalproperty_status todoStatus;
 595
 596         now = time(NULL);
 597
 598         if (supplied_vtodo != NULL) {
 599                 vtodo = supplied_vtodo;
 600
 601                 /**
 602                  * If we're looking at a fully encapsulated VCALENDAR
 603                  * rather than a VTODO component, attempt to use the first
 604                  * relevant VTODO subcomponent.  If there is none, the
 605                  * NULL returned by icalcomponent_get_first_component() will
 606                  * tell the next iteration of this function to create a
 607                  * new one.
 608                  */
 609                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 610                         display_edit_individual_task(
 611                                 icalcomponent_get_first_component(
 612                                         vtodo, ICAL_VTODO_COMPONENT
 613                                         ),
 614                                 msgnum, from, unread, calv
 615                                 );
 616                         return;
 617                 }
 618         }
 619         else {
 620                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 621                 created_new_vtodo = 1;
 622         }
 623
 624         // TODO: Can we take all this and move it into a template?
 625         output_headers(1, 1, 1, 0, 0, 0);
 626         wprintf("<!-- start task edit form -->");
 627         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 628         // Get summary early for title
 629         wprintf("<div class=\"box\">\n");
 630         wprintf("<div class=\"boxlabel\">");
 631         wprintf(_("Edit task"));
 632         wprintf("- ");
 633         if (p != NULL) {
 634                 escputs((char *)icalproperty_get_comment(p));
 635         }
 636         wprintf("</div>");
 637
 638         wprintf("<div class=\"boxcontent\">\n");
 639         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 640         wprintf("<div style=\"display: none;\">\n       ");
 641         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 642         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 643                 msgnum);
 644         wprintf("</div>");
 645         wprintf("<table class=\"calendar_background\"><tr><td>");
 646         wprintf("<TABLE STYLE=\"border: none;\">\n");
 647
 648         wprintf("<TR><TD>");
 649         wprintf(_("Summary:"));
 650         wprintf("</TD><TD>"
 651                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 652                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 653         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 654         if (p != NULL) {
 655                 escputs((char *)icalproperty_get_comment(p));
 656         }
 657         wprintf("\"></TD></TR>\n");
 658
 659         wprintf("<TR><TD>");
 660         wprintf(_("Start date:"));
 661         wprintf("</TD><TD>");
 662         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 663         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodtstart\" ID=\"nodtstart\" VALUE=\"NODTSTART\" ");
 664         if (p == NULL) {
 665                 wprintf("CHECKED=\"CHECKED\"");
 666         }
 667         wprintf(">");
 668         wprintf(_("No date"));
 669
 670         wprintf(" ");
 671         wprintf(_("or"));
 672         wprintf(" ");
 673         if (p != NULL) {
 674                 IcalTime = icalproperty_get_dtstart(p);
 675         }
 676         else
 677                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 678         display_icaltimetype_as_webform(&IcalTime, "dtstart", 0);
 679         wprintf("</TD></TR>\n");
 680
 681         wprintf("<TR><TD>");
 682         wprintf(_("Due date:"));
 683         wprintf("</TD><TD>");
 684         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 685         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodue\" ID=\"nodue\" VALUE=\"NODUE\"");
 686         if (p == NULL) {
 687                 wprintf("CHECKED=\"CHECKED\"");
 688         }
 689         wprintf(">");
 690         wprintf(_("No date"));
 691         wprintf(" ");
 692         wprintf(_("or"));
 693         wprintf(" ");
 694         if (p != NULL) {
 695                 IcalTime = icalproperty_get_due(p);
 696         }
 697         else
 698                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 699         display_icaltimetype_as_webform(&IcalTime, "due", 0);
 700
 701         wprintf("</TD></TR>\n");
 702         todoStatus = icalcomponent_get_status(vtodo);
 703         wprintf("<TR><TD>\n");
 704         wprintf(_("Completed:"));
 705         wprintf("</TD><TD>");
 706         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"status\" VALUE=\"COMPLETED\"");
 707         if (todoStatus == ICAL_STATUS_COMPLETED) {
 708                 wprintf(" CHECKED=\"CHECKED\"");
 709         }
 710         wprintf(" >");
 711         wprintf("</TD></TR>");
 712         // start category field
 713         p = icalcomponent_get_first_property(vtodo, ICAL_CATEGORIES_PROPERTY);
 714         wprintf("<TR><TD>");
 715         wprintf(_("Category:"));
 716         wprintf("</TD><TD>");
 717         wprintf("<INPUT TYPE=\"text\" NAME=\"category\" MAXLENGTH=\"32\" SIZE=\"32\" VALUE=\"");
 718         if (p != NULL) {
 719                 escputs((char *)icalproperty_get_categories(p));
 720         }
 721         wprintf("\">");
 722         wprintf("</TD></TR>\n   ");
 723         // end category field
 724         wprintf("<TR><TD>");
 725         wprintf(_("Description:"));
 726         wprintf("</TD><TD>");
 727         wprintf("<TEXTAREA NAME=\"description\" "
 728                 "ROWS=\"10\" COLS=\"80\">\n"
 729                 );
 730         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 731         if (p != NULL) {
 732                 escputs((char *)icalproperty_get_comment(p));
 733         }
 734         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 735
 736         wprintf("<SPAN STYLE=\"text-align: center;\">"
 737                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 738                 "&nbsp;&nbsp;"
 739                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 740                 "&nbsp;&nbsp;"
 741                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 742                 "</SPAN>\n",
 743                 _("Save"),
 744                 _("Delete"),
 745                 _("Cancel")
 746                 );
 747         wprintf("</td></tr></table>");
 748         wprintf("</FORM>\n");
 749         wprintf("</div></div></div>\n");
 750         wprintf("<!-- end task edit form -->");
 751         wDumpContent(1);
 752
 753         if (created_new_vtodo) {
 754                 icalcomponent_free(vtodo);
 755         }
 756 }
 757
 758 /*
 759  * \brief Save an edited task
 760  * \param supplied_vtodo the task to save
 761  * \param msgnum number of the mesage in our db
 762  */
 763 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum, char* from, int unread,
 764                                 struct calview *calv)
 765 {
 766         char buf[SIZ];
 767         int delete_existing = 0;
 768         icalproperty *prop;
 769         icalcomponent *vtodo, *encaps;
 770         int created_new_vtodo = 0;
 771         int i;
 772         int sequence = 0;
 773         struct icaltimetype t;
 774
 775         if (supplied_vtodo != NULL) {
 776                 vtodo = supplied_vtodo;
 777                 /**
 778                  * If we're looking at a fully encapsulated VCALENDAR
 779                  * rather than a VTODO component, attempt to use the first
 780                  * relevant VTODO subcomponent.  If there is none, the
 781                  * NULL returned by icalcomponent_get_first_component() will
 782                  * tell the next iteration of this function to create a
 783                  * new one.
 784                  */
 785                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 786                         save_individual_task(
 787                                 icalcomponent_get_first_component(
 788                                         vtodo, ICAL_VTODO_COMPONENT),
 789                                 msgnum, from, unread, calv
 790                                 );
 791                         return;
 792                 }
 793         }
 794         else {
 795                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 796                 created_new_vtodo = 1;
 797         }
 798
 799         if (havebstr("save_button")) {
 800
 801                 /** Replace values in the component with ones from the form */
 802
 803                 while (prop = icalcomponent_get_first_property(vtodo,
 804                                                                ICAL_SUMMARY_PROPERTY), prop != NULL) {
 805                         icalcomponent_remove_property(vtodo, prop);
 806                         icalproperty_free(prop);
 807                 }
 808                 if (havebstr("summary")) {
 809
 810                         icalcomponent_add_property(vtodo,
 811                                                    icalproperty_new_summary(bstr("summary")));
 812                 } else {
 813                         icalcomponent_add_property(vtodo,
 814                                                    icalproperty_new_summary("Untitled Task"));
 815                 }
 816
 817                 while (prop = icalcomponent_get_first_property(vtodo,
 818                                                                ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 819                         icalcomponent_remove_property(vtodo, prop);
 820                         icalproperty_free(prop);
 821                 }
 822                 if (havebstr("description")) {
 823                         icalcomponent_add_property(vtodo,
 824                                                    icalproperty_new_description(bstr("description")));
 825                 }
 826
 827                 while (prop = icalcomponent_get_first_property(vtodo,
 828                                                                ICAL_DTSTART_PROPERTY), prop != NULL) {
 829                         icalcomponent_remove_property(vtodo, prop);
 830                         icalproperty_free(prop);
 831                 }
 832                 if (IsEmptyStr(bstr("nodtstart"))) {
 833                         icaltime_from_webform(&t, "dtstart");
 834                         icalcomponent_add_property(vtodo,
 835                                                    icalproperty_new_dtstart(t)
 836                                 );
 837                 }
 838                 while(prop = icalcomponent_get_first_property(vtodo,
 839                                                               ICAL_STATUS_PROPERTY), prop != NULL) {
 840                         icalcomponent_remove_property(vtodo,prop);
 841                         icalproperty_free(prop);
 842                 }
 843                 if (havebstr("status")) {
 844                         icalproperty_status taskStatus = icalproperty_string_to_status(
 845                                 bstr("status"));
 846                         icalcomponent_set_status(vtodo, taskStatus);
 847                 }
 848                 while (prop = icalcomponent_get_first_property(vtodo,
 849                                                                ICAL_CATEGORIES_PROPERTY), prop != NULL) {
 850                         icalcomponent_remove_property(vtodo,prop);
 851                         icalproperty_free(prop);
 852                 }
 853                 if (!IsEmptyStr(bstr("category"))) {
 854                         prop = icalproperty_new_categories(bstr("category"));
 855                         icalcomponent_add_property(vtodo,prop);
 856                 }
 857                 while (prop = icalcomponent_get_first_property(vtodo,
 858                                                                ICAL_DUE_PROPERTY), prop != NULL) {
 859                         icalcomponent_remove_property(vtodo, prop);
 860                         icalproperty_free(prop);
 861                 }
 862                 if (IsEmptyStr(bstr("nodue"))) {
 863                         icaltime_from_webform(&t, "due");
 864                         icalcomponent_add_property(vtodo,
 865                                                    icalproperty_new_due(t)
 866                                 );
 867                 }
 868                 /** Give this task a UID if it doesn't have one. */
 869                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 870                 if (icalcomponent_get_first_property(vtodo,
 871                                                      ICAL_UID_PROPERTY) == NULL) {
 872                         generate_uuid(buf);
 873                         icalcomponent_add_property(vtodo,
 874                                                    icalproperty_new_uid(buf)
 875                                 );
 876                 }
 877
 878                 /** Increment the sequence ID */
 879                 lprintf(9, "Increment the sequence ID\n");
 880                 while (prop = icalcomponent_get_first_property(vtodo,
 881                                                                ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 882                         i = icalproperty_get_sequence(prop);
 883                         lprintf(9, "Sequence was %d\n", i);
 884                         if (i > sequence) sequence = i;
 885                         icalcomponent_remove_property(vtodo, prop);
 886                         icalproperty_free(prop);
 887                 }
 888                 ++sequence;
 889                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 890                 icalcomponent_add_property(vtodo,
 891                                            icalproperty_new_sequence(sequence)
 892                         );
 893
 894                 /**
 895                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 896                  * for two reasons: one, it's easier to just free the whole thing
 897                  * when we're done instead of unbundling, but more importantly, we
 898                  * can't encapsulate something that may already be encapsulated
 899                  * somewhere else.
 900                  */
 901                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 902                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 903
 904                 /* Serialize it and save it to the message base */
 905                 serv_puts("ENT0 1|||4");
 906                 serv_getln(buf, sizeof buf);
 907                 if (buf[0] == '4') {
 908                         serv_puts("Content-type: text/calendar");
 909                         serv_puts("");
 910                         serv_puts(icalcomponent_as_ical_string(encaps));
 911                         serv_puts("000");
 912
 913                         /**
 914                          * Probably not necessary; the server will see the UID
 915                          * of the object and delete the old one anyway, but
 916                          * just in case...
 917                          */
 918                         delete_existing = 1;
 919                 }
 920                 icalcomponent_free(encaps);
 921         }
 922
 923         /**
 924          * If the user clicked 'Delete' then explicitly delete the message.
 925          */
 926         if (havebstr("delete_button")) {
 927                 delete_existing = 1;
 928         }
 929
 930         if ( (delete_existing) && (msgnum > 0L) ) {
 931                 serv_printf("DELE %ld", lbstr("msgnum"));
 932                 serv_getln(buf, sizeof buf);
 933         }
 934
 935         if (created_new_vtodo) {
 936                 icalcomponent_free(vtodo);
 937         }
 938
 939         /** Go back to the task list */
 940         readloop("readfwd");
 941 }
 942
 943
 944
 945 /*
 946  * Code common to all icalendar display handlers.  Given a message number and a MIME
 947  * type, we load the message and hunt for that MIME type.  If found, we load
 948  * the relevant part, deserialize it into a libical component, filter it for
 949  * the requested object type, and feed it to the specified handler.
 950  */
 951 void load_ical_object(long msgnum, int unread,
 952                            icalcomponent_kind which_kind,
 953                            void (*callback)(icalcomponent *, long, char*, int, struct calview *),
 954                            struct calview *calv
 955         )
 956 {
 957         char buf[1024];
 958         char from[128] = "";
 959         char mime_partnum[256];
 960         char mime_filename[256];
 961         char mime_content_type[256];
 962         char mime_disposition[256];
 963         int mime_length;
 964         char relevant_partnum[256];
 965         char *relevant_source = NULL;
 966         icalcomponent *cal, *c;
 967
 968         relevant_partnum[0] = '\0';
 969         sprintf(buf, "MSG4 %ld", msgnum);       /* we need the mime headers */
 970         serv_puts(buf);
 971         serv_getln(buf, sizeof buf);
 972         if (buf[0] != '1') return;
 973
 974         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 975                 if (!strncasecmp(buf, "part=", 5)) {
 976                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 977                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 978                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 979                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 980                         mime_length = extract_int(&buf[5], 5);
 981
 982                         if (  (!strcasecmp(mime_content_type, "text/calendar"))
 983                               || (!strcasecmp(mime_content_type, "application/ics"))
 984                               || (!strcasecmp(mime_content_type, "text/vtodo"))
 985                                 ) {
 986                                 strcpy(relevant_partnum, mime_partnum);
 987                         }
 988                 }
 989                 else if (!strncasecmp(buf, "from=", 4)) {
 990                         extract_token(from, buf, 1, '=', sizeof(from));
 991                 }
 992         }
 993
 994         if (!IsEmptyStr(relevant_partnum)) {
 995                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 996                 if (relevant_source != NULL) {
 997
 998                         cal = icalcomponent_new_from_string(relevant_source);
 999                         if (cal != NULL) {
1000                                 /* FIXME temp */
1001                                 icalproperty *p;
1002                                 p = icalcomponent_get_first_property(cal, ICAL_DTSTART_PROPERTY);
1003                                 if (p) {
1004                                         lprintf(9, "DTSTART IS %s\n",
1005                                                 icaltime_as_ical_string(
1006                                                         icalproperty_get_dtstart(p)
1007                                                 )
1008                                         );
1009                                 }
1010                                 /* */
1011
1012
1013                                 /* A which_kind of (-1) means just load the whole thing */
1014                                 if (which_kind == (-1)) {
1015                                         callback(cal, msgnum, from, unread, calv);
1016                                 }
1017
1018                                 /* Otherwise recurse and hunt */
1019                                 else {
1020
1021                                         /* Simple components of desired type */
1022                                         if (icalcomponent_isa(cal) == which_kind) {
1023                                                 callback(cal, msgnum, from, unread, calv);
1024                                         }
1025
1026                                         /* Subcomponents of desired type */
1027                                         for (c = icalcomponent_get_first_component(cal, which_kind);
1028                                         (c != 0);
1029                                         c = icalcomponent_get_next_component(cal, which_kind)) {
1030                                                 callback(c, msgnum, from, unread, calv);
1031                                         }
1032
1033                                 }
1034
1035                                 icalcomponent_free(cal);
1036                         }
1037                         free(relevant_source);
1038                 }
1039         }
1040         icalmemory_free_ring();
1041 }
1042
1043 /*
1044  * Display a calendar item
1045  */
1046 void load_calendar_item(message_summary *Msg, int unread, struct calview *c) {
1047         /*load_ical_object(Msg->msgnum, unread, ICAL_VEVENT_COMPONENT, display_individual_cal, c);*/
1048         load_ical_object(Msg->msgnum, unread, (-1), display_individual_cal, c);
1049 }
1050
1051 /*
1052  * Display task view
1053  */
1054 void display_task(message_summary *Msg, int unread) {
1055         load_ical_object(Msg->msgnum, unread, ICAL_VTODO_COMPONENT, display_individual_cal, NULL);
1056 }
1057
1058 /*
1059  * Display the editor component for a task
1060  */
1061 void display_edit_task(void) {
1062         long msgnum = 0L;
1063
1064         /* Force change the room if we have to */
1065         if (havebstr("taskrm")) {
1066                 gotoroom((char *)bstr("taskrm"));
1067         }
1068
1069         msgnum = lbstr("msgnum");
1070         if (msgnum > 0L) {
1071                 /* existing task */
1072                 load_ical_object(msgnum, 0,
1073                                       ICAL_VTODO_COMPONENT,
1074                                       display_edit_individual_task,
1075                                       NULL
1076                 );
1077         }
1078         else {
1079                 /* new task */
1080                 display_edit_individual_task(NULL, 0L, "", 0, NULL);
1081         }
1082 }
1083
1084 /*
1085  * save an edited task
1086  */
1087 void save_task(void) {
1088         long msgnum = 0L;
1089         msgnum = lbstr("msgnum");
1090         if (msgnum > 0L) {
1091                 load_ical_object(msgnum, 0, ICAL_VTODO_COMPONENT, save_individual_task, NULL);
1092         }
1093         else {
1094                 save_individual_task(NULL, 0L, "", 0, NULL);
1095         }
1096 }
1097
1098 /*
1099  * display the editor component for an event
1100  */
1101 void display_edit_event(void) {
1102         long msgnum = 0L;
1103
1104         msgnum = lbstr("msgnum");
1105         if (msgnum > 0L) {
1106                 /* existing event */
1107                 load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, display_edit_individual_event, NULL);
1108         }
1109         else {
1110                 /* new event */
1111                 display_edit_individual_event(NULL, 0L, "", 0, NULL);
1112         }
1113 }
1114
1115 /*
1116  * save an edited event
1117  */
1118 void save_event(void) {
1119         long msgnum = 0L;
1120
1121         msgnum = lbstr("msgnum");
1122
1123         if (msgnum > 0L) {
1124                 load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, save_individual_event, NULL);
1125         }
1126         else {
1127                 save_individual_event(NULL, 0L, "", 0, NULL);
1128         }
1129 }
1130
1131
1132
1133
1134
1135 /*
1136  * Anonymous request of freebusy data for a user
1137  */
1138 void do_freebusy(const char *req) {
1139         char who[SIZ];
1140         char buf[SIZ];
1141         int len;
1142         long lines;
1143
1144         extract_token(who, req, 1, ' ', sizeof who);
1145         if (!strncasecmp(who, "/freebusy/", 10)) {
1146                 strcpy(who, &who[10]);
1147         }
1148         unescape_input(who);
1149
1150         len = strlen(who);
1151         if ( (!strcasecmp(&who[len-4], ".vcf"))
1152              || (!strcasecmp(&who[len-4], ".ifb"))
1153              || (!strcasecmp(&who[len-4], ".vfb")) ) {
1154                 who[len-4] = 0;
1155         }
1156
1157         lprintf(9, "freebusy requested for <%s>\n", who);
1158         serv_printf("ICAL freebusy|%s", who);
1159         serv_getln(buf, sizeof buf);
1160
1161         if (buf[0] != '1') {
1162                 hprintf("HTTP/1.1 404 %s\n", &buf[4]);
1163                 output_headers(0, 0, 0, 0, 0, 0);
1164                 hprintf("Content-Type: text/plain\r\n");
1165                 wprintf("%s\n", &buf[4]);
1166                 end_burst();
1167                 return;
1168         }
1169
1170         read_server_text(WC->WBuf, &lines);
1171         http_transmit_thing("text/calendar", 0);
1172 }
1173
1174
1175
1176
1177
1178 void
1179 InitModule_CALENDAR
1180 (void)
1181 {
1182         WebcitAddUrlHandler(HKEY("display_edit_task"), display_edit_task, 0);
1183         WebcitAddUrlHandler(HKEY("save_task"), save_task, 0);
1184         WebcitAddUrlHandler(HKEY("display_edit_event"), display_edit_event, 0);
1185         WebcitAddUrlHandler(HKEY("save_event"), save_event, 0);
1186         WebcitAddUrlHandler(HKEY("respond_to_request"), respond_to_request, 0);
1187         WebcitAddUrlHandler(HKEY("handle_rsvp"), handle_rsvp, 0);
1188 }