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         icalcomponent *cptr = NULL;
 413
 414         /* recur variables */
 415         icalproperty *rrule = NULL;
 416         struct icalrecurrencetype recur;
 417         icalrecur_iterator *ritr = NULL;
 418         struct icaltimetype next;
 419         int num_recur = 0;
 420
 421         dtstart = icaltime_null_time();
 422         dtend = icaltime_null_time();
 423
 424         if (WCC->disp_cal_items == NULL)
 425                 WCC->disp_cal_items = NewHash(0, Flathash);
 426
 427         /* Note: anything we do here, we also have to do below for the recurrences. */
 428         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 429         memset(Cal, 0, sizeof(disp_cal));
 430         Cal->cal = icalcomponent_new_clone(cal);
 431
 432         /* Dezonify and decapsulate at the very last moment */
 433         /* lprintf(9, "INITIAL: %s\n", icaltime_as_ical_string(icalproperty_get_dtstart(
 434                 icalcomponent_get_first_property(icalcomponent_get_first_component(
 435                 Cal->cal, ICAL_VEVENT_COMPONENT), ICAL_DTSTART_PROPERTY)))
 436         ); */
 437         ical_dezonify(Cal->cal);
 438         if (icalcomponent_isa(Cal->cal) != ICAL_VEVENT_COMPONENT) {
 439                 cptr = icalcomponent_get_first_component(Cal->cal, ICAL_VEVENT_COMPONENT);
 440                 if (cptr) {
 441                         cptr = icalcomponent_new_clone(cptr);
 442                         icalcomponent_free(Cal->cal);
 443                         Cal->cal = cptr;
 444                 }
 445         }
 446
 447         Cal->unread = unread;
 448         len = strlen(from);
 449         Cal->from = (char*)malloc(len+ 1);
 450         memcpy(Cal->from, from, len + 1);
 451         Cal->cal_msgnum = msgnum;
 452
 453         /* Precalculate the starting date and time of this event, and store it in our top-level
 454          * structure.  Later, when we are rendering the calendar, we can just peek at these values
 455          * without having to break apart every calendar item.
 456          */
 457         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 458         if (ps != NULL) {
 459                 dtstart = icalproperty_get_dtstart(ps);
 460                 Cal->event_start = icaltime_as_timet(dtstart);
 461         }
 462
 463         /* Do the same for the ending date and time.  It makes the day view much easier to render. */
 464         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 465         if (ps != NULL) {
 466                 dtend = icalproperty_get_dtend(ps);
 467                 Cal->event_end = icaltime_as_timet(dtend);
 468         }
 469
 470         /* Store it in the hash list. */
 471         Put(WCC->disp_cal_items,
 472             (char*) &Cal->event_start,
 473             sizeof(Cal->event_start),
 474             Cal,
 475             delete_cal);
 476
 477         /****************************** handle recurring events ******************************/
 478
 479         if (icaltime_is_null_time(dtstart)) return;     /* Can't recur without a start time */
 480
 481         if (!icaltime_is_null_time(dtend)) {            /* Need duration for recurrences */
 482                 dur = icaltime_subtract(dtend, dtstart);
 483         }
 484
 485         /*
 486          * Just let libical iterate the recurrence, and keep looping back to the top of this function,
 487          * adding new hash entries that all point back to the same msgnum, until either the iteration
 488          * stops or some outer bound is reached.  The display code will automatically do the Right Thing.
 489          */
 490         cptr = cal;
 491         if (icalcomponent_isa(cptr) != ICAL_VEVENT_COMPONENT) {
 492                 cptr = icalcomponent_get_first_component(cptr, ICAL_VEVENT_COMPONENT);
 493         }
 494         if (!cptr) return;
 495         ps = icalcomponent_get_first_property(cptr, ICAL_DTSTART_PROPERTY);
 496         if (ps == NULL) return;
 497         dtstart = icalproperty_get_dtstart(ps);
 498         rrule = icalcomponent_get_first_property(cptr, ICAL_RRULE_PROPERTY);
 499         if (!rrule) return;
 500         recur = icalproperty_get_rrule(rrule);
 501         ritr = icalrecur_iterator_new(recur, dtstart);
 502         if (!ritr) return;
 503
 504         int stop_rr = 0;
 505         while (next = icalrecur_iterator_next(ritr), ((!icaltime_is_null_time(next))&&(!stop_rr)) ) {
 506                 ++num_recur;
 507                 if (num_recur > 1) {            /* Skip the first one.  We already did it at the root. */
 508                         /* lprintf(9, "REPEATS: %s\n", icaltime_as_ical_string(next)); */
 509
 510                         /* Note: anything we do here, we also have to do above for the root event. */
 511                         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 512                         memset(Cal, 0, sizeof(disp_cal));
 513                         Cal->cal = icalcomponent_new_clone(cal);
 514                         Cal->unread = unread;
 515                         len = strlen(from);
 516                         Cal->from = (char*)malloc(len+ 1);
 517                         memcpy(Cal->from, from, len + 1);
 518                         Cal->cal_msgnum = msgnum;
 519
 520                         icalcomponent *cptr;
 521                         if (icalcomponent_isa(Cal->cal) == ICAL_VEVENT_COMPONENT) {
 522                                 cptr = Cal->cal;
 523                         }
 524                         else {
 525                                 cptr = icalcomponent_get_first_component(Cal->cal, ICAL_VEVENT_COMPONENT);
 526                         }
 527                         if (cptr) {
 528                                 ps = icalcomponent_get_first_property(cptr, ICAL_DTSTART_PROPERTY);
 529                                 if (ps != NULL) {
 530                                         icalcomponent_remove_property(cptr, ps);
 531                                         ps = icalproperty_new_dtstart(next);
 532                                         icalcomponent_add_property(cptr, ps);
 533
 534                                         Cal->event_start = icaltime_as_timet(next);
 535                                         final_recurrence = Cal->event_start;
 536                                 }
 537
 538                                 ps = icalcomponent_get_first_property(cptr, ICAL_DTEND_PROPERTY);
 539                                 if (ps != NULL) {
 540                                         icalcomponent_remove_property(cptr, ps);
 541
 542                                         /* Make a new dtend */
 543                                         ps = icalproperty_new_dtend(icaltime_add(next, dur));
 544
 545                                         /* and stick it somewhere */
 546                                         icalcomponent_add_property(cptr, ps);
 547                                 }
 548
 549                         }
 550
 551                         /* Dezonify and decapsulate at the very last moment */
 552                         ical_dezonify(Cal->cal);
 553                         if (icalcomponent_isa(Cal->cal) != ICAL_VEVENT_COMPONENT) {
 554                                 cptr = icalcomponent_get_first_component(Cal->cal, ICAL_VEVENT_COMPONENT);
 555                                 if (cptr) {
 556                                         cptr = icalcomponent_new_clone(cptr);
 557                                         icalcomponent_free(Cal->cal);
 558                                         Cal->cal = cptr;
 559                                 }
 560                         }
 561
 562                         if ( (Cal->event_start > calv->lower_bound)
 563                            && (Cal->event_start < calv->upper_bound) ) {
 564                                 Put(WCC->disp_cal_items,
 565                                         (char*) &Cal->event_start,
 566                                         sizeof(Cal->event_start),
 567                                         Cal,
 568                                         delete_cal
 569                                 );
 570                         }
 571                         else {
 572                                 delete_cal(Cal);
 573                         }
 574
 575                         /* If an upper bound is set, stop when we go out of scope */
 576                         if (final_recurrence > calv->upper_bound) stop_rr = 1;
 577                 }
 578         }
 579         icalrecur_iterator_free(ritr);
 580         /* lprintf(9, "Performed %d recurrences; final one is %s", num_recur, ctime(&final_recurrence)); */
 581
 582 }
 583
 584
 585
 586 /*
 587  * Display a task by itself (for editing)
 588  */
 589 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum, char *from,
 590                         int unread, struct calview *calv)
 591 {
 592         icalcomponent *vtodo;
 593         icalproperty *p;
 594         struct icaltimetype IcalTime;
 595         time_t now;
 596         int created_new_vtodo = 0;
 597         icalproperty_status todoStatus;
 598
 599         now = time(NULL);
 600
 601         if (supplied_vtodo != NULL) {
 602                 vtodo = supplied_vtodo;
 603
 604                 /**
 605                  * If we're looking at a fully encapsulated VCALENDAR
 606                  * rather than a VTODO component, attempt to use the first
 607                  * relevant VTODO subcomponent.  If there is none, the
 608                  * NULL returned by icalcomponent_get_first_component() will
 609                  * tell the next iteration of this function to create a
 610                  * new one.
 611                  */
 612                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 613                         display_edit_individual_task(
 614                                 icalcomponent_get_first_component(
 615                                         vtodo, ICAL_VTODO_COMPONENT
 616                                         ),
 617                                 msgnum, from, unread, calv
 618                                 );
 619                         return;
 620                 }
 621         }
 622         else {
 623                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 624                 created_new_vtodo = 1;
 625         }
 626
 627         // TODO: Can we take all this and move it into a template?
 628         output_headers(1, 1, 1, 0, 0, 0);
 629         wprintf("<!-- start task edit form -->");
 630         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 631         // Get summary early for title
 632         wprintf("<div class=\"box\">\n");
 633         wprintf("<div class=\"boxlabel\">");
 634         wprintf(_("Edit task"));
 635         wprintf("- ");
 636         if (p != NULL) {
 637                 escputs((char *)icalproperty_get_comment(p));
 638         }
 639         wprintf("</div>");
 640
 641         wprintf("<div class=\"boxcontent\">\n");
 642         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 643         wprintf("<div style=\"display: none;\">\n       ");
 644         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 645         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 646                 msgnum);
 647         wprintf("</div>");
 648         wprintf("<table class=\"calendar_background\"><tr><td>");
 649         wprintf("<TABLE STYLE=\"border: none;\">\n");
 650
 651         wprintf("<TR><TD>");
 652         wprintf(_("Summary:"));
 653         wprintf("</TD><TD>"
 654                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 655                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 656         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 657         if (p != NULL) {
 658                 escputs((char *)icalproperty_get_comment(p));
 659         }
 660         wprintf("\"></TD></TR>\n");
 661
 662         wprintf("<TR><TD>");
 663         wprintf(_("Start date:"));
 664         wprintf("</TD><TD>");
 665         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 666         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodtstart\" ID=\"nodtstart\" VALUE=\"NODTSTART\" ");
 667         if (p == NULL) {
 668                 wprintf("CHECKED=\"CHECKED\"");
 669         }
 670         wprintf(">");
 671         wprintf(_("No date"));
 672
 673         wprintf(" ");
 674         wprintf(_("or"));
 675         wprintf(" ");
 676         if (p != NULL) {
 677                 IcalTime = icalproperty_get_dtstart(p);
 678         }
 679         else
 680                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 681         display_icaltimetype_as_webform(&IcalTime, "dtstart", 0);
 682         wprintf("</TD></TR>\n");
 683
 684         wprintf("<TR><TD>");
 685         wprintf(_("Due date:"));
 686         wprintf("</TD><TD>");
 687         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 688         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodue\" ID=\"nodue\" VALUE=\"NODUE\"");
 689         if (p == NULL) {
 690                 wprintf("CHECKED=\"CHECKED\"");
 691         }
 692         wprintf(">");
 693         wprintf(_("No date"));
 694         wprintf(" ");
 695         wprintf(_("or"));
 696         wprintf(" ");
 697         if (p != NULL) {
 698                 IcalTime = icalproperty_get_due(p);
 699         }
 700         else
 701                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 702         display_icaltimetype_as_webform(&IcalTime, "due", 0);
 703
 704         wprintf("</TD></TR>\n");
 705         todoStatus = icalcomponent_get_status(vtodo);
 706         wprintf("<TR><TD>\n");
 707         wprintf(_("Completed:"));
 708         wprintf("</TD><TD>");
 709         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"status\" VALUE=\"COMPLETED\"");
 710         if (todoStatus == ICAL_STATUS_COMPLETED) {
 711                 wprintf(" CHECKED=\"CHECKED\"");
 712         }
 713         wprintf(" >");
 714         wprintf("</TD></TR>");
 715         // start category field
 716         p = icalcomponent_get_first_property(vtodo, ICAL_CATEGORIES_PROPERTY);
 717         wprintf("<TR><TD>");
 718         wprintf(_("Category:"));
 719         wprintf("</TD><TD>");
 720         wprintf("<INPUT TYPE=\"text\" NAME=\"category\" MAXLENGTH=\"32\" SIZE=\"32\" VALUE=\"");
 721         if (p != NULL) {
 722                 escputs((char *)icalproperty_get_categories(p));
 723         }
 724         wprintf("\">");
 725         wprintf("</TD></TR>\n   ");
 726         // end category field
 727         wprintf("<TR><TD>");
 728         wprintf(_("Description:"));
 729         wprintf("</TD><TD>");
 730         wprintf("<TEXTAREA NAME=\"description\" "
 731                 "ROWS=\"10\" COLS=\"80\">\n"
 732                 );
 733         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 734         if (p != NULL) {
 735                 escputs((char *)icalproperty_get_comment(p));
 736         }
 737         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 738
 739         wprintf("<SPAN STYLE=\"text-align: center;\">"
 740                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 741                 "&nbsp;&nbsp;"
 742                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 743                 "&nbsp;&nbsp;"
 744                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 745                 "</SPAN>\n",
 746                 _("Save"),
 747                 _("Delete"),
 748                 _("Cancel")
 749                 );
 750         wprintf("</td></tr></table>");
 751         wprintf("</FORM>\n");
 752         wprintf("</div></div></div>\n");
 753         wprintf("<!-- end task edit form -->");
 754         wDumpContent(1);
 755
 756         if (created_new_vtodo) {
 757                 icalcomponent_free(vtodo);
 758         }
 759 }
 760
 761 /*
 762  * \brief Save an edited task
 763  * \param supplied_vtodo the task to save
 764  * \param msgnum number of the mesage in our db
 765  */
 766 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum, char* from, int unread,
 767                                 struct calview *calv)
 768 {
 769         char buf[SIZ];
 770         int delete_existing = 0;
 771         icalproperty *prop;
 772         icalcomponent *vtodo, *encaps;
 773         int created_new_vtodo = 0;
 774         int i;
 775         int sequence = 0;
 776         struct icaltimetype t;
 777
 778         if (supplied_vtodo != NULL) {
 779                 vtodo = supplied_vtodo;
 780                 /**
 781                  * If we're looking at a fully encapsulated VCALENDAR
 782                  * rather than a VTODO component, attempt to use the first
 783                  * relevant VTODO subcomponent.  If there is none, the
 784                  * NULL returned by icalcomponent_get_first_component() will
 785                  * tell the next iteration of this function to create a
 786                  * new one.
 787                  */
 788                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 789                         save_individual_task(
 790                                 icalcomponent_get_first_component(
 791                                         vtodo, ICAL_VTODO_COMPONENT),
 792                                 msgnum, from, unread, calv
 793                                 );
 794                         return;
 795                 }
 796         }
 797         else {
 798                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 799                 created_new_vtodo = 1;
 800         }
 801
 802         if (havebstr("save_button")) {
 803
 804                 /** Replace values in the component with ones from the form */
 805
 806                 while (prop = icalcomponent_get_first_property(vtodo,
 807                                                                ICAL_SUMMARY_PROPERTY), prop != NULL) {
 808                         icalcomponent_remove_property(vtodo, prop);
 809                         icalproperty_free(prop);
 810                 }
 811                 if (havebstr("summary")) {
 812
 813                         icalcomponent_add_property(vtodo,
 814                                                    icalproperty_new_summary(bstr("summary")));
 815                 } else {
 816                         icalcomponent_add_property(vtodo,
 817                                                    icalproperty_new_summary("Untitled Task"));
 818                 }
 819
 820                 while (prop = icalcomponent_get_first_property(vtodo,
 821                                                                ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 822                         icalcomponent_remove_property(vtodo, prop);
 823                         icalproperty_free(prop);
 824                 }
 825                 if (havebstr("description")) {
 826                         icalcomponent_add_property(vtodo,
 827                                                    icalproperty_new_description(bstr("description")));
 828                 }
 829
 830                 while (prop = icalcomponent_get_first_property(vtodo,
 831                                                                ICAL_DTSTART_PROPERTY), prop != NULL) {
 832                         icalcomponent_remove_property(vtodo, prop);
 833                         icalproperty_free(prop);
 834                 }
 835                 if (IsEmptyStr(bstr("nodtstart"))) {
 836                         icaltime_from_webform(&t, "dtstart");
 837                         icalcomponent_add_property(vtodo,
 838                                                    icalproperty_new_dtstart(t)
 839                                 );
 840                 }
 841                 while(prop = icalcomponent_get_first_property(vtodo,
 842                                                               ICAL_STATUS_PROPERTY), prop != NULL) {
 843                         icalcomponent_remove_property(vtodo,prop);
 844                         icalproperty_free(prop);
 845                 }
 846                 if (havebstr("status")) {
 847                         icalproperty_status taskStatus = icalproperty_string_to_status(
 848                                 bstr("status"));
 849                         icalcomponent_set_status(vtodo, taskStatus);
 850                 }
 851                 while (prop = icalcomponent_get_first_property(vtodo,
 852                                                                ICAL_CATEGORIES_PROPERTY), prop != NULL) {
 853                         icalcomponent_remove_property(vtodo,prop);
 854                         icalproperty_free(prop);
 855                 }
 856                 if (!IsEmptyStr(bstr("category"))) {
 857                         prop = icalproperty_new_categories(bstr("category"));
 858                         icalcomponent_add_property(vtodo,prop);
 859                 }
 860                 while (prop = icalcomponent_get_first_property(vtodo,
 861                                                                ICAL_DUE_PROPERTY), prop != NULL) {
 862                         icalcomponent_remove_property(vtodo, prop);
 863                         icalproperty_free(prop);
 864                 }
 865                 if (IsEmptyStr(bstr("nodue"))) {
 866                         icaltime_from_webform(&t, "due");
 867                         icalcomponent_add_property(vtodo,
 868                                                    icalproperty_new_due(t)
 869                                 );
 870                 }
 871                 /** Give this task a UID if it doesn't have one. */
 872                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 873                 if (icalcomponent_get_first_property(vtodo,
 874                                                      ICAL_UID_PROPERTY) == NULL) {
 875                         generate_uuid(buf);
 876                         icalcomponent_add_property(vtodo,
 877                                                    icalproperty_new_uid(buf)
 878                                 );
 879                 }
 880
 881                 /** Increment the sequence ID */
 882                 lprintf(9, "Increment the sequence ID\n");
 883                 while (prop = icalcomponent_get_first_property(vtodo,
 884                                                                ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 885                         i = icalproperty_get_sequence(prop);
 886                         lprintf(9, "Sequence was %d\n", i);
 887                         if (i > sequence) sequence = i;
 888                         icalcomponent_remove_property(vtodo, prop);
 889                         icalproperty_free(prop);
 890                 }
 891                 ++sequence;
 892                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 893                 icalcomponent_add_property(vtodo,
 894                                            icalproperty_new_sequence(sequence)
 895                         );
 896
 897                 /**
 898                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 899                  * for two reasons: one, it's easier to just free the whole thing
 900                  * when we're done instead of unbundling, but more importantly, we
 901                  * can't encapsulate something that may already be encapsulated
 902                  * somewhere else.
 903                  */
 904                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 905                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 906
 907                 /* Serialize it and save it to the message base */
 908                 serv_puts("ENT0 1|||4");
 909                 serv_getln(buf, sizeof buf);
 910                 if (buf[0] == '4') {
 911                         serv_puts("Content-type: text/calendar");
 912                         serv_puts("");
 913                         serv_puts(icalcomponent_as_ical_string(encaps));
 914                         serv_puts("000");
 915
 916                         /**
 917                          * Probably not necessary; the server will see the UID
 918                          * of the object and delete the old one anyway, but
 919                          * just in case...
 920                          */
 921                         delete_existing = 1;
 922                 }
 923                 icalcomponent_free(encaps);
 924         }
 925
 926         /**
 927          * If the user clicked 'Delete' then explicitly delete the message.
 928          */
 929         if (havebstr("delete_button")) {
 930                 delete_existing = 1;
 931         }
 932
 933         if ( (delete_existing) && (msgnum > 0L) ) {
 934                 serv_printf("DELE %ld", lbstr("msgnum"));
 935                 serv_getln(buf, sizeof buf);
 936         }
 937
 938         if (created_new_vtodo) {
 939                 icalcomponent_free(vtodo);
 940         }
 941
 942         /** Go back to the task list */
 943         readloop("readfwd");
 944 }
 945
 946
 947
 948 /*
 949  * Code common to all icalendar display handlers.  Given a message number and a MIME
 950  * type, we load the message and hunt for that MIME type.  If found, we load
 951  * the relevant part, deserialize it into a libical component, filter it for
 952  * the requested object type, and feed it to the specified handler.
 953  */
 954 void load_ical_object(long msgnum, int unread,
 955                            icalcomponent_kind which_kind,
 956                            void (*callback)(icalcomponent *, long, char*, int, struct calview *),
 957                            struct calview *calv
 958         )
 959 {
 960         char buf[1024];
 961         char from[128] = "";
 962         char mime_partnum[256];
 963         char mime_filename[256];
 964         char mime_content_type[256];
 965         char mime_disposition[256];
 966         int mime_length;
 967         char relevant_partnum[256];
 968         char *relevant_source = NULL;
 969         icalcomponent *cal, *c;
 970
 971         relevant_partnum[0] = '\0';
 972         sprintf(buf, "MSG4 %ld", msgnum);       /* we need the mime headers */
 973         serv_puts(buf);
 974         serv_getln(buf, sizeof buf);
 975         if (buf[0] != '1') return;
 976
 977         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 978                 if (!strncasecmp(buf, "part=", 5)) {
 979                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 980                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 981                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 982                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 983                         mime_length = extract_int(&buf[5], 5);
 984
 985                         if (  (!strcasecmp(mime_content_type, "text/calendar"))
 986                               || (!strcasecmp(mime_content_type, "application/ics"))
 987                               || (!strcasecmp(mime_content_type, "text/vtodo"))
 988                                 ) {
 989                                 strcpy(relevant_partnum, mime_partnum);
 990                         }
 991                 }
 992                 else if (!strncasecmp(buf, "from=", 4)) {
 993                         extract_token(from, buf, 1, '=', sizeof(from));
 994                 }
 995         }
 996
 997         if (!IsEmptyStr(relevant_partnum)) {
 998                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 999                 if (relevant_source != NULL) {
1000
1001                         cal = icalcomponent_new_from_string(relevant_source);
1002                         if (cal != NULL) {
1003
1004                                 /* A which_kind of (-1) means just load the whole thing */
1005                                 if (which_kind == (-1)) {
1006                                         callback(cal, msgnum, from, unread, calv);
1007                                 }
1008
1009                                 /* Otherwise recurse and hunt */
1010                                 else {
1011
1012                                         /* Simple components of desired type */
1013                                         if (icalcomponent_isa(cal) == which_kind) {
1014                                                 callback(cal, msgnum, from, unread, calv);
1015                                         }
1016
1017                                         /* Subcomponents of desired type */
1018                                         for (c = icalcomponent_get_first_component(cal, which_kind);
1019                                         (c != 0);
1020                                         c = icalcomponent_get_next_component(cal, which_kind)) {
1021                                                 callback(c, msgnum, from, unread, calv);
1022                                         }
1023
1024                                 }
1025
1026                                 icalcomponent_free(cal);
1027                         }
1028                         free(relevant_source);
1029                 }
1030         }
1031         icalmemory_free_ring();
1032 }
1033
1034 /*
1035  * Display a calendar item
1036  */
1037 void load_calendar_item(message_summary *Msg, int unread, struct calview *c) {
1038         /*load_ical_object(Msg->msgnum, unread, ICAL_VEVENT_COMPONENT, display_individual_cal, c);*/
1039         load_ical_object(Msg->msgnum, unread, (-1), display_individual_cal, c);
1040 }
1041
1042 /*
1043  * Display task view
1044  */
1045 void display_task(message_summary *Msg, int unread) {
1046         load_ical_object(Msg->msgnum, unread, ICAL_VTODO_COMPONENT, display_individual_cal, NULL);
1047 }
1048
1049 /*
1050  * Display the editor component for a task
1051  */
1052 void display_edit_task(void) {
1053         long msgnum = 0L;
1054
1055         /* Force change the room if we have to */
1056         if (havebstr("taskrm")) {
1057                 gotoroom((char *)bstr("taskrm"));
1058         }
1059
1060         msgnum = lbstr("msgnum");
1061         if (msgnum > 0L) {
1062                 /* existing task */
1063                 load_ical_object(msgnum, 0,
1064                                       ICAL_VTODO_COMPONENT,
1065                                       display_edit_individual_task,
1066                                       NULL
1067                 );
1068         }
1069         else {
1070                 /* new task */
1071                 display_edit_individual_task(NULL, 0L, "", 0, NULL);
1072         }
1073 }
1074
1075 /*
1076  * save an edited task
1077  */
1078 void save_task(void) {
1079         long msgnum = 0L;
1080         msgnum = lbstr("msgnum");
1081         if (msgnum > 0L) {
1082                 load_ical_object(msgnum, 0, ICAL_VTODO_COMPONENT, save_individual_task, NULL);
1083         }
1084         else {
1085                 save_individual_task(NULL, 0L, "", 0, NULL);
1086         }
1087 }
1088
1089 /*
1090  * display the editor component for an event
1091  */
1092 void display_edit_event(void) {
1093         long msgnum = 0L;
1094
1095         msgnum = lbstr("msgnum");
1096         if (msgnum > 0L) {
1097                 /* existing event */
1098                 load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, display_edit_individual_event, NULL);
1099         }
1100         else {
1101                 /* new event */
1102                 display_edit_individual_event(NULL, 0L, "", 0, NULL);
1103         }
1104 }
1105
1106 /*
1107  * save an edited event
1108  */
1109 void save_event(void) {
1110         long msgnum = 0L;
1111
1112         msgnum = lbstr("msgnum");
1113
1114         if (msgnum > 0L) {
1115                 /* load_ical_object(msgnum, 0, ICAL_VEVENT_COMPONENT, save_individual_event, NULL); */
1116                 load_ical_object(msgnum, 0, (-1), save_individual_event, NULL);
1117         }
1118         else {
1119                 save_individual_event(NULL, 0L, "", 0, NULL);
1120         }
1121 }
1122
1123
1124
1125
1126
1127 /*
1128  * Anonymous request of freebusy data for a user
1129  */
1130 void do_freebusy(const char *req) {
1131         char who[SIZ];
1132         char buf[SIZ];
1133         int len;
1134         long lines;
1135
1136         extract_token(who, req, 1, ' ', sizeof who);
1137         if (!strncasecmp(who, "/freebusy/", 10)) {
1138                 strcpy(who, &who[10]);
1139         }
1140         unescape_input(who);
1141
1142         len = strlen(who);
1143         if ( (!strcasecmp(&who[len-4], ".vcf"))
1144              || (!strcasecmp(&who[len-4], ".ifb"))
1145              || (!strcasecmp(&who[len-4], ".vfb")) ) {
1146                 who[len-4] = 0;
1147         }
1148
1149         lprintf(9, "freebusy requested for <%s>\n", who);
1150         serv_printf("ICAL freebusy|%s", who);
1151         serv_getln(buf, sizeof buf);
1152
1153         if (buf[0] != '1') {
1154                 hprintf("HTTP/1.1 404 %s\n", &buf[4]);
1155                 output_headers(0, 0, 0, 0, 0, 0);
1156                 hprintf("Content-Type: text/plain\r\n");
1157                 wprintf("%s\n", &buf[4]);
1158                 end_burst();
1159                 return;
1160         }
1161
1162         read_server_text(WC->WBuf, &lines);
1163         http_transmit_thing("text/calendar", 0);
1164 }
1165
1166
1167
1168
1169
1170 void
1171 InitModule_CALENDAR
1172 (void)
1173 {
1174         WebcitAddUrlHandler(HKEY("display_edit_task"), display_edit_task, 0);
1175         WebcitAddUrlHandler(HKEY("save_task"), save_task, 0);
1176         WebcitAddUrlHandler(HKEY("display_edit_event"), display_edit_event, 0);
1177         WebcitAddUrlHandler(HKEY("save_event"), save_event, 0);
1178         WebcitAddUrlHandler(HKEY("respond_to_request"), respond_to_request, 0);
1179         WebcitAddUrlHandler(HKEY("handle_rsvp"), handle_rsvp, 0);
1180 }