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  * \brief Process a calendar object
  13  * ...at this point it's already been deserialized by cal_process_attachment()
  14  * \param cal the calendar object
  15  * \param recursion_level call stack depth ??????
  16  * \param msgnum number of the mesage in our db
  17  * \param cal_partnum of the calendar object ????
  18  */
  19 void cal_process_object(icalcomponent *cal,
  20                         int recursion_level,
  21                         long msgnum,
  22                         char *cal_partnum)
  23 {
  24         icalcomponent *c;
  25         icalproperty *method = NULL;
  26         icalproperty_method the_method = ICAL_METHOD_NONE;
  27         icalproperty *p;
  28         struct icaltimetype t;
  29         time_t tt;
  30         char buf[256];
  31         char conflict_name[256];
  32         char conflict_message[256];
  33         int is_update = 0;
  34         char divname[32];
  35         static int divcount = 0;
  36
  37         sprintf(divname, "rsvp%04x", ++divcount);
  38
  39         /** Leading HTML for the display of this object */
  40         if (recursion_level == 0) {
  41                 wprintf("<div class=\"mimepart\">\n");
  42         }
  43
  44         /** Look for a method */
  45         method = icalcomponent_get_first_property(cal, ICAL_METHOD_PROPERTY);
  46
  47         /** See what we need to do with this */
  48         if (method != NULL) {
  49                 the_method = icalproperty_get_method(method);
  50                 char *title;
  51
  52                 wprintf("<div id=\"%s_title\">", divname);
  53                 wprintf("<img src=\"static/calarea_48x.gif\">");
  54                 wprintf("<span>");
  55                 switch(the_method) {
  56                 case ICAL_METHOD_REQUEST:
  57                         title = _("Meeting invitation");
  58                         break;
  59                 case ICAL_METHOD_REPLY:
  60                         title = _("Attendee's reply to your invitation");
  61                         break;
  62                 case ICAL_METHOD_PUBLISH:
  63                         title = _("Published event");
  64                         break;
  65                 default:
  66                         title = _("This is an unknown type of calendar item.");
  67                         break;
  68                 }
  69                 wprintf("</span>");
  70
  71                 wprintf("&nbsp;&nbsp;%s",title);
  72                 wprintf("</div>");
  73         }
  74
  75         wprintf("<dl>");
  76         p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
  77         if (p != NULL) {
  78                 wprintf("<dt>");
  79                 wprintf(_("Summary:"));
  80                 wprintf("</dt><dd>");
  81                 escputs((char *)icalproperty_get_comment(p));
  82                 wprintf("</dd>\n");
  83         }
  84
  85         p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
  86         if (p != NULL) {
  87                 wprintf("<dt>");
  88                 wprintf(_("Location:"));
  89                 wprintf("</dt><dd>");
  90                 escputs((char *)icalproperty_get_comment(p));
  91                 wprintf("</dd>\n");
  92         }
  93
  94         /**
  95          * Only show start/end times if we're actually looking at the VEVENT
  96          * component.  Otherwise it shows bogus dates for things like timezone.
  97          */
  98         if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
  99
 100                 p = icalcomponent_get_first_property(cal,
 101                                                      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                                 wprintf("<dt>");
 114                                 wprintf(_("Date:"));
 115                                 wprintf("</dt><dd>%s</dd>", d_str);
 116                         }
 117                         else {
 118                                 tt = icaltime_as_timet(t);
 119                                 webcit_fmt_date(buf, tt, 0);
 120                                 wprintf("<dt>");
 121                                 wprintf(_("Starting date/time:"));
 122                                 wprintf("</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                         wprintf("<dt>");
 132                         wprintf(_("Ending date/time:"));
 133                         wprintf("</dt><dd>%s</dd>", buf);
 134                 }
 135
 136         }
 137
 138         p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
 139         if (p != NULL) {
 140                 wprintf("<dt>");
 141                 wprintf(_("Description:"));
 142                 wprintf("</dt><dd>");
 143                 escputs((char *)icalproperty_get_comment(p));
 144                 wprintf("</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                 wprintf("<dt>");
 152                 wprintf(_("Attendee:"));
 153                 wprintf("</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                         escputs(buf);
 161                         wprintf(" ");
 162
 163                         /** participant status */
 164                         partstat_as_string(buf, p);
 165                         escputs(buf);
 166                 }
 167                 wprintf("</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(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                                 wprintf("<dt>%s",
 200                                         (is_update ?
 201                                          _("Update:") :
 202                                          _("CONFLICT:")
 203                                                 )
 204                                         );
 205                                 wprintf("</dt><dd>");
 206                                 escputs(conflict_message);
 207                                 wprintf("</dd>\n");
 208                         }
 209                 }
 210                 lprintf(9, "...done.\n");
 211
 212                 wprintf("</dl>");
 213
 214                 /** Display the Accept/Decline buttons */
 215                 wprintf("<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                 /** \todo  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                 wprintf("<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                 wprintf("<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(char *part_source, long msgnum, char *cal_partnum)
 275 {
 276         icalcomponent *cal;
 277
 278         cal = icalcomponent_new_from_string(part_source);
 279
 280         if (cal == NULL) {
 281                 wprintf(_("There was an error parsing this calendar item."));
 282                 wprintf("<br />\n");
 283                 return;
 284         }
 285
 286         ical_dezonify(cal);
 287         cal_process_object(cal, 0, msgnum, cal_partnum);
 288
 289         /* Free the memory we obtained from libical's constructor */
 290         icalcomponent_free(cal);
 291 }
 292
 293
 294
 295
 296 /**
 297  * \brief accept/decline meeting
 298  * Respond to a meeting request
 299  */
 300 void respond_to_request(void)
 301 {
 302         char buf[1024];
 303
 304         begin_ajax_response();
 305
 306         serv_printf("ICAL respond|%s|%s|%s|",
 307                 bstr("msgnum"),
 308                 bstr("cal_partnum"),
 309                 bstr("sc")
 310         );
 311         serv_getln(buf, sizeof buf);
 312
 313         if (buf[0] == '2') {
 314                 wprintf("<img src=\"static/calarea_48x.gif\"><span>");
 315                 if (!strcasecmp(bstr("sc"), "accept")) {
 316                         wprintf(_("You have accepted this meeting invitation.  "
 317                                 "It has been entered into your calendar.")
 318                         );
 319                 } else if (!strcasecmp(bstr("sc"), "tentative")) {
 320                         wprintf(_("You have tentatively accepted this meeting invitation.  "
 321                                 "It has been 'pencilled in' to your calendar.")
 322                         );
 323                 } else if (!strcasecmp(bstr("sc"), "decline")) {
 324                         wprintf(_("You have declined this meeting invitation.  "
 325                                   "It has <b>not</b> been entered into your calendar.")
 326                                 );
 327                 }
 328                 wprintf(" ");
 329                 wprintf(_("A reply has been sent to the meeting organizer."));
 330                 wprintf("</span>");
 331         } else {
 332                 wprintf("<img align=\"center\" src=\"static/error.gif\"><span>");
 333                 wprintf("%s\n", &buf[4]);
 334                 wprintf("</span>");
 335         }
 336
 337         end_ajax_response();
 338 }
 339
 340
 341
 342 /**
 343  * \brief Handle an incoming RSVP
 344  */
 345 void handle_rsvp(void)
 346 {
 347         char buf[1024];
 348
 349         begin_ajax_response();
 350
 351         serv_printf("ICAL handle_rsvp|%s|%s|%s|",
 352                 bstr("msgnum"),
 353                 bstr("cal_partnum"),
 354                 bstr("sc")
 355         );
 356         serv_getln(buf, sizeof buf);
 357
 358         if (buf[0] == '2') {
 359                 wprintf("<img src=\"static/calarea_48x.gif\"><span>");
 360                 if (!strcasecmp(bstr("sc"), "update")) {
 361                         wprintf(_("Your calendar has been updated to reflect this RSVP."));
 362                 } else if (!strcasecmp(bstr("sc"), "ignore")) {
 363                         wprintf(_("You have chosen to ignore this RSVP. "
 364                                   "Your calendar has <b>not</b> been updated.")
 365                                 );
 366                 }
 367                 wprintf("</span>");
 368         } else {
 369                 wprintf("<img src=\"static/error.gif\"><span> %s\n", &buf[4]);
 370                 wprintf("</span>");
 371         }
 372
 373         end_ajax_response();
 374 }
 375
 376
 377
 378 /*@}*/
 379 /*-----------------------------------------------------------------------**/
 380
 381
 382
 383 /**
 384  * \defgroup MsgDisplayHandlers Display handlers for message reading
 385  * \ingroup Calendaring
 386  */
 387
 388 /*@{*/
 389
 390 int Flathash(const char *str, long len)
 391 {
 392         if (len != sizeof (int))
 393                 return 0;
 394         else return *(int*)str;
 395 }
 396
 397
 398
 399 /**
 400  * \brief clean up ical memory
 401  * todo this could get trouble with future ical versions
 402  */
 403 void delete_cal(void *vCal)
 404 {
 405         disp_cal *Cal = (disp_cal*) vCal;
 406         icalcomponent_free(Cal->cal);
 407         free(Cal->from);
 408         free(Cal);
 409 }
 410
 411 /**
 412  * \brief get items, keep them.
 413  * If we're reading calendar items, just store them for now.  We have to
 414  * sort and re-output them later when we draw the calendar.
 415  * \param cal Our calendar to process
 416  * \param msgnum number of the mesage in our db
 417  */
 418 void display_individual_cal(icalcomponent *cal, long msgnum, char *from, int unread)
 419 {
 420         icalproperty *ps = NULL;
 421         struct icaltimetype t;
 422         struct wcsession *WCC = WC;
 423         disp_cal *Cal;
 424         size_t len;
 425
 426         if (WCC->disp_cal_items == NULL)
 427                 WCC->disp_cal_items = NewHash(0, Flathash);
 428
 429         Cal = (disp_cal*) malloc(sizeof(disp_cal));
 430         memset(Cal, 0, sizeof(disp_cal));
 431
 432         Cal->cal = icalcomponent_new_clone(cal);
 433         Cal->unread = unread;
 434         len = strlen(from);
 435         Cal->from = (char*)malloc(len+ 1);
 436         memcpy(Cal->from, from, len + 1);
 437         ical_dezonify(Cal->cal);
 438         Cal->cal_msgnum = msgnum;
 439
 440         //! Precalculate some Values we can use for easy comparison later.
 441         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 442         if (ps != NULL) {
 443                 t = icalproperty_get_dtstart(ps);
 444                 Cal->event_start = icaltime_as_timet(t);
 445         }
 446         ps = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 447         if (ps != NULL) { //!  Precalc the end day and end day + hour
 448                 t = icalproperty_get_dtstart(ps);
 449                 Cal->event_end = icaltime_as_timet(t);
 450         }
 451         Put(WCC->disp_cal_items,
 452             (char*) &Cal->event_start,
 453             sizeof(Cal->event_start),
 454             Cal,
 455             delete_cal);
 456 }
 457
 458
 459
 460 /**
 461  * \brief edit a task
 462  * Display a task by itself (for editing)
 463  * \param supplied_vtodo the todo item we want to edit
 464  * \param msgnum number of the mesage in our db
 465  */
 466 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum, char *from, int unread)
 467 {
 468         icalcomponent *vtodo;
 469         icalproperty *p;
 470         struct icaltimetype IcalTime;
 471         time_t now;
 472         int created_new_vtodo = 0;
 473         icalproperty_status todoStatus;
 474
 475         now = time(NULL);
 476
 477         if (supplied_vtodo != NULL) {
 478                 vtodo = supplied_vtodo;
 479
 480                 /**
 481                  * If we're looking at a fully encapsulated VCALENDAR
 482                  * rather than a VTODO component, attempt to use the first
 483                  * relevant VTODO subcomponent.  If there is none, the
 484                  * NULL returned by icalcomponent_get_first_component() will
 485                  * tell the next iteration of this function to create a
 486                  * new one.
 487                  */
 488                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 489                         display_edit_individual_task(
 490                                 icalcomponent_get_first_component(
 491                                         vtodo, ICAL_VTODO_COMPONENT
 492                                         ),
 493                                 msgnum,
 494                                 from, unread
 495                                 );
 496                         return;
 497                 }
 498         }
 499         else {
 500                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 501                 created_new_vtodo = 1;
 502         }
 503
 504         // TODO: Can we take all this and move it into a template?
 505         output_headers(1, 1, 1, 0, 0, 0);
 506         wprintf("<!-- start task edit form -->");
 507         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 508         // Get summary early for title
 509         wprintf("<div class=\"box\">\n");
 510         wprintf("<div class=\"boxlabel\">");
 511         wprintf(_("Edit task"));
 512         wprintf("- ");
 513         if (p != NULL) {
 514                 escputs((char *)icalproperty_get_comment(p));
 515         }
 516         wprintf("</div>");
 517
 518         wprintf("<div class=\"boxcontent\">\n");
 519         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 520         wprintf("<div style=\"display: none;\">\n       ");
 521         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%ld\">\n", WC->nonce);
 522         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 523                 msgnum);
 524         wprintf("</div>");
 525         wprintf("<table class=\"calendar_background\"><tr><td>");
 526         wprintf("<TABLE STYLE=\"border: none;\">\n");
 527
 528         wprintf("<TR><TD>");
 529         wprintf(_("Summary:"));
 530         wprintf("</TD><TD>"
 531                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 532                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 533         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 534         if (p != NULL) {
 535                 escputs((char *)icalproperty_get_comment(p));
 536         }
 537         wprintf("\"></TD></TR>\n");
 538
 539         wprintf("<TR><TD>");
 540         wprintf(_("Start date:"));
 541         wprintf("</TD><TD>");
 542         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 543         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodtstart\" ID=\"nodtstart\" VALUE=\"NODTSTART\" ");
 544         if (p == NULL) {
 545                 wprintf("CHECKED=\"CHECKED\"");
 546         }
 547         wprintf(">");
 548         wprintf(_("No date"));
 549
 550         wprintf(" ");
 551         wprintf(_("or"));
 552         wprintf(" ");
 553         if (p != NULL) {
 554                 IcalTime = icalproperty_get_dtstart(p);
 555         }
 556         else
 557                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 558         display_icaltimetype_as_webform(&IcalTime, "dtstart");
 559         wprintf("</TD></TR>\n");
 560
 561         wprintf("<TR><TD>");
 562         wprintf(_("Due date:"));
 563         wprintf("</TD><TD>");
 564         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 565         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodue\" ID=\"nodue\" VALUE=\"NODUE\"");
 566         if (p == NULL) {
 567                 wprintf("CHECKED=\"CHECKED\"");
 568         }
 569         wprintf(">");
 570         wprintf(_("No date"));
 571         wprintf(" ");
 572         wprintf(_("or"));
 573         wprintf(" ");
 574         if (p != NULL) {
 575                 IcalTime = icalproperty_get_due(p);
 576         }
 577         else
 578                 IcalTime = icaltime_current_time_with_zone(get_default_icaltimezone());
 579         display_icaltimetype_as_webform(&IcalTime, "due");
 580
 581         wprintf("</TD></TR>\n");
 582         todoStatus = icalcomponent_get_status(vtodo);
 583         wprintf("<TR><TD>\n");
 584         wprintf(_("Completed:"));
 585         wprintf("</TD><TD>");
 586         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"STATUS\" VALUE=\"COMPLETED\"");
 587         if (todoStatus == ICAL_STATUS_COMPLETED) {
 588                 wprintf(" CHECKED=\"CHECKED\"");
 589         }
 590         wprintf(" >");
 591         wprintf("</TD></TR>");
 592         // start category field
 593         p = icalcomponent_get_first_property(vtodo, ICAL_CATEGORIES_PROPERTY);
 594         wprintf("<TR><TD>");
 595         wprintf(_("Category:"));
 596         wprintf("</TD><TD>");
 597         wprintf("<INPUT TYPE=\"text\" NAME=\"category\" MAXLENGTH=\"32\" SIZE=\"32\" VALUE=\"");
 598         if (p != NULL) {
 599                 escputs((char *)icalproperty_get_categories(p));
 600         }
 601         wprintf("\">");
 602         wprintf("</TD></TR>\n   ");
 603         // end category field
 604         wprintf("<TR><TD>");
 605         wprintf(_("Description:"));
 606         wprintf("</TD><TD>");
 607         wprintf("<TEXTAREA NAME=\"description\" "
 608                 "ROWS=\"10\" COLS=\"80\">\n"
 609                 );
 610         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 611         if (p != NULL) {
 612                 escputs((char *)icalproperty_get_comment(p));
 613         }
 614         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 615
 616         wprintf("<SPAN STYLE=\"text-align: center;\">"
 617                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 618                 "&nbsp;&nbsp;"
 619                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 620                 "&nbsp;&nbsp;"
 621                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 622                 "</SPAN>\n",
 623                 _("Save"),
 624                 _("Delete"),
 625                 _("Cancel")
 626                 );
 627         wprintf("</td></tr></table>");
 628         wprintf("</FORM>\n");
 629         wprintf("</div></div></div>\n");
 630         wprintf("<!-- end task edit form -->");
 631         wDumpContent(1);
 632
 633         if (created_new_vtodo) {
 634                 icalcomponent_free(vtodo);
 635         }
 636 }
 637
 638 /*
 639  * \brief Save an edited task
 640  * \param supplied_vtodo the task to save
 641  * \param msgnum number of the mesage in our db
 642  */
 643 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum, char* from, int unread)
 644 {
 645         char buf[SIZ];
 646         int delete_existing = 0;
 647         icalproperty *prop;
 648         icalcomponent *vtodo, *encaps;
 649         int created_new_vtodo = 0;
 650         int i;
 651         int sequence = 0;
 652         struct icaltimetype t;
 653
 654         if (supplied_vtodo != NULL) {
 655                 vtodo = supplied_vtodo;
 656                 /**
 657                  * If we're looking at a fully encapsulated VCALENDAR
 658                  * rather than a VTODO component, attempt to use the first
 659                  * relevant VTODO subcomponent.  If there is none, the
 660                  * NULL returned by icalcomponent_get_first_component() will
 661                  * tell the next iteration of this function to create a
 662                  * new one.
 663                  */
 664                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 665                         save_individual_task(
 666                                 icalcomponent_get_first_component(
 667                                         vtodo, ICAL_VTODO_COMPONENT),
 668                                 msgnum, from, unread
 669                                 );
 670                         return;
 671                 }
 672         }
 673         else {
 674                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 675                 created_new_vtodo = 1;
 676         }
 677
 678         if (havebstr("save_button")) {
 679
 680                 /** Replace values in the component with ones from the form */
 681
 682                 while (prop = icalcomponent_get_first_property(vtodo,
 683                                                                ICAL_SUMMARY_PROPERTY), prop != NULL) {
 684                         icalcomponent_remove_property(vtodo, prop);
 685                         icalproperty_free(prop);
 686                 }
 687                 if (havebstr("summary")) {
 688
 689                         icalcomponent_add_property(vtodo,
 690                                                    icalproperty_new_summary(bstr("summary")));
 691                 } else {
 692                         icalcomponent_add_property(vtodo,
 693                                                    icalproperty_new_summary("Untitled Task"));
 694                 }
 695
 696                 while (prop = icalcomponent_get_first_property(vtodo,
 697                                                                ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 698                         icalcomponent_remove_property(vtodo, prop);
 699                         icalproperty_free(prop);
 700                 }
 701                 if (!IsEmptyStr(bstr("description"))) {
 702                         icalcomponent_add_property(vtodo,
 703                                                    icalproperty_new_description(bstr("description")));
 704                 }
 705
 706                 while (prop = icalcomponent_get_first_property(vtodo,
 707                                                                ICAL_DTSTART_PROPERTY), prop != NULL) {
 708                         icalcomponent_remove_property(vtodo, prop);
 709                         icalproperty_free(prop);
 710                 }
 711                 if (IsEmptyStr(bstr("nodtstart"))) {
 712                         icaltime_from_webform(&t, "dtstart");
 713                         icalcomponent_add_property(vtodo,
 714                                                    icalproperty_new_dtstart(t)
 715                                 );
 716                 }
 717                 while(prop = icalcomponent_get_first_property(vtodo,
 718                                                               ICAL_STATUS_PROPERTY), prop != NULL) {
 719                         icalcomponent_remove_property(vtodo,prop);
 720                         icalproperty_free(prop);
 721                 }
 722                 if (!IsEmptyStr(bstr("status"))) {
 723                         icalproperty_status taskStatus = icalproperty_string_to_status(
 724                                 bstr("status"));
 725                         icalcomponent_set_status(vtodo, taskStatus);
 726                 }
 727                 while (prop = icalcomponent_get_first_property(vtodo,
 728                                                                ICAL_CATEGORIES_PROPERTY), prop != NULL) {
 729                         icalcomponent_remove_property(vtodo,prop);
 730                         icalproperty_free(prop);
 731                 }
 732                 if (!IsEmptyStr(bstr("category"))) {
 733                         prop = icalproperty_new_categories(bstr("category"));
 734                         icalcomponent_add_property(vtodo,prop);
 735                 }
 736                 while (prop = icalcomponent_get_first_property(vtodo,
 737                                                                ICAL_DUE_PROPERTY), prop != NULL) {
 738                         icalcomponent_remove_property(vtodo, prop);
 739                         icalproperty_free(prop);
 740                 }
 741                 if (IsEmptyStr(bstr("nodue"))) {
 742                         icaltime_from_webform(&t, "due");
 743                         icalcomponent_add_property(vtodo,
 744                                                    icalproperty_new_due(t)
 745                                 );
 746                 }
 747                 /** Give this task a UID if it doesn't have one. */
 748                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 749                 if (icalcomponent_get_first_property(vtodo,
 750                                                      ICAL_UID_PROPERTY) == NULL) {
 751                         generate_uuid(buf);
 752                         icalcomponent_add_property(vtodo,
 753                                                    icalproperty_new_uid(buf)
 754                                 );
 755                 }
 756
 757                 /** Increment the sequence ID */
 758                 lprintf(9, "Increment the sequence ID\n");
 759                 while (prop = icalcomponent_get_first_property(vtodo,
 760                                                                ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 761                         i = icalproperty_get_sequence(prop);
 762                         lprintf(9, "Sequence was %d\n", i);
 763                         if (i > sequence) sequence = i;
 764                         icalcomponent_remove_property(vtodo, prop);
 765                         icalproperty_free(prop);
 766                 }
 767                 ++sequence;
 768                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 769                 icalcomponent_add_property(vtodo,
 770                                            icalproperty_new_sequence(sequence)
 771                         );
 772
 773                 /**
 774                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 775                  * for two reasons: one, it's easier to just free the whole thing
 776                  * when we're done instead of unbundling, but more importantly, we
 777                  * can't encapsulate something that may already be encapsulated
 778                  * somewhere else.
 779                  */
 780                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 781                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 782
 783                 /* Serialize it and save it to the message base */
 784                 serv_puts("ENT0 1|||4");
 785                 serv_getln(buf, sizeof buf);
 786                 if (buf[0] == '4') {
 787                         serv_puts("Content-type: text/calendar");
 788                         serv_puts("");
 789                         serv_puts(icalcomponent_as_ical_string(encaps));
 790                         serv_puts("000");
 791
 792                         /**
 793                          * Probably not necessary; the server will see the UID
 794                          * of the object and delete the old one anyway, but
 795                          * just in case...
 796                          */
 797                         delete_existing = 1;
 798                 }
 799                 icalcomponent_free(encaps);
 800         }
 801
 802         /**
 803          * If the user clicked 'Delete' then explicitly delete the message.
 804          */
 805         if (havebstr("delete_button")) {
 806                 delete_existing = 1;
 807         }
 808
 809         if ( (delete_existing) && (msgnum > 0L) ) {
 810                 serv_printf("DELE %ld", lbstr("msgnum"));
 811                 serv_getln(buf, sizeof buf);
 812         }
 813
 814         if (created_new_vtodo) {
 815                 icalcomponent_free(vtodo);
 816         }
 817
 818         /** Go back to the task list */
 819         readloop("readfwd");
 820 }
 821
 822
 823
 824 /**
 825  * \brief generic item handler
 826  * Code common to all display handlers.  Given a message number and a MIME
 827  * type, we load the message and hunt for that MIME type.  If found, we load
 828  * the relevant part, deserialize it into a libical component, filter it for
 829  * the requested object type, and feed it to the specified handler.
 830  * \param mimetype mimetyp of our object
 831  * \param which_kind sort of ical type
 832  * \param msgnum number of the mesage in our db
 833  * \param callback a funcion \todo
 834  *
 835  */
 836 void display_using_handler(long msgnum, int unread,
 837                            icalcomponent_kind which_kind,
 838                            void (*callback)(icalcomponent *, long, char*, int)
 839         )
 840 {
 841         char buf[1024];
 842         char from[128] = "";
 843         char mime_partnum[256];
 844         char mime_filename[256];
 845         char mime_content_type[256];
 846         char mime_disposition[256];
 847         int mime_length;
 848         char relevant_partnum[256];
 849         char *relevant_source = NULL;
 850         icalcomponent *cal, *c;
 851
 852         relevant_partnum[0] = '\0';
 853         sprintf(buf, "MSG4 %ld", msgnum);       /* we need the mime headers */
 854         serv_puts(buf);
 855         serv_getln(buf, sizeof buf);
 856         if (buf[0] != '1') return;
 857
 858         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 859                 if (!strncasecmp(buf, "part=", 5)) {
 860                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 861                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 862                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 863                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 864                         mime_length = extract_int(&buf[5], 5);
 865
 866                         if (  (!strcasecmp(mime_content_type, "text/calendar"))
 867                               || (!strcasecmp(mime_content_type, "application/ics"))
 868                               || (!strcasecmp(mime_content_type, "text/vtodo"))
 869                                 ) {
 870                                 strcpy(relevant_partnum, mime_partnum);
 871                         }
 872                 }
 873                 else if (!strncasecmp(buf, "from=", 4)) {
 874                         extract_token(from, buf, 1, '=', sizeof(from));
 875                 }
 876         }
 877
 878         if (!IsEmptyStr(relevant_partnum)) {
 879                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 880                 if (relevant_source != NULL) {
 881
 882                         cal = icalcomponent_new_from_string(relevant_source);
 883                         if (cal != NULL) {
 884
 885                                 ical_dezonify(cal);
 886
 887                                 /** Simple components of desired type */
 888                                 if (icalcomponent_isa(cal) == which_kind) {
 889                                         callback(cal, msgnum, from, unread);
 890                                 }
 891
 892                                 /** Subcomponents of desired type */
 893                                 for (c = icalcomponent_get_first_component(cal,
 894                                                                            which_kind);
 895                                      (c != 0);
 896                                      c = icalcomponent_get_next_component(cal,
 897                                                                           which_kind)) {
 898                                         callback(c, msgnum, from, unread);
 899                                 }
 900                                 icalcomponent_free(cal);
 901                         }
 902                         free(relevant_source);
 903                 }
 904         }
 905         icalmemory_free_ring();
 906 }
 907
 908 /**
 909  * \brief display whole calendar
 910  * \param msgnum number of the mesage in our db
 911  */
 912 void display_calendar(long msgnum, int unread) {
 913         display_using_handler(msgnum, unread,
 914                               ICAL_VEVENT_COMPONENT,
 915                               display_individual_cal);
 916 }
 917
 918 /**
 919  * \brief display whole taksview
 920  * \param msgnum number of the mesage in our db
 921  */
 922 void display_task(long msgnum, int unread) {
 923         display_using_handler(msgnum, unread,
 924                               ICAL_VTODO_COMPONENT,
 925                               display_individual_cal);
 926 }
 927
 928 /**
 929  * \brief display the editor component for a task
 930  */
 931 void display_edit_task(void) {
 932         long msgnum = 0L;
 933
 934         /** Force change the room if we have to */
 935         if (havebstr("taskrm")) {
 936                 gotoroom((char *)bstr("taskrm"));
 937         }
 938
 939         msgnum = lbstr("msgnum");
 940         if (msgnum > 0L) {
 941                 /** existing task */
 942                 display_using_handler(msgnum, 0,
 943                                       ICAL_VTODO_COMPONENT,
 944                                       display_edit_individual_task);
 945         }
 946         else {
 947                 /** new task */
 948                 display_edit_individual_task(NULL, 0L, "", 0);
 949         }
 950 }
 951
 952 /**
 953  *\brief save an edited task
 954  */
 955 void save_task(void) {
 956         long msgnum = 0L;
 957
 958         msgnum = lbstr("msgnum");
 959         if (msgnum > 0L) {
 960                 display_using_handler(msgnum, 0,
 961                                       ICAL_VTODO_COMPONENT,
 962                                       save_individual_task);
 963         }
 964         else {
 965                 save_individual_task(NULL, 0L, "", 0);
 966         }
 967 }
 968
 969 /**
 970  * \brief display the editor component for an event
 971  */
 972 void display_edit_event(void) {
 973         long msgnum = 0L;
 974
 975         msgnum = lbstr("msgnum");
 976         if (msgnum > 0L) {
 977                 /* existing event */
 978                 display_using_handler(msgnum, 0,
 979                                       ICAL_VEVENT_COMPONENT,
 980                                       display_edit_individual_event);
 981         }
 982         else {
 983                 /* new event */
 984                 display_edit_individual_event(NULL, 0L, "", 0);
 985         }
 986 }
 987
 988 /**
 989  * \brief save an edited event
 990  */
 991 void save_event(void) {
 992         long msgnum = 0L;
 993
 994         msgnum = lbstr("msgnum");
 995
 996         if (msgnum > 0L) {
 997                 display_using_handler(msgnum, 0,
 998                                       ICAL_VEVENT_COMPONENT,
 999                                       save_individual_event);
1000         }
1001         else {
1002                 save_individual_event(NULL, 0L, "", 0);
1003         }
1004 }
1005
1006
1007
1008
1009
1010 /**
1011  * \brief freebusy display (for client software)
1012  * \param req dunno. ?????
1013  */
1014 void do_freebusy(char *req) {
1015         char who[SIZ];
1016         char buf[SIZ];
1017         char *fb;
1018         int len;
1019
1020         extract_token(who, req, 1, ' ', sizeof who);
1021         if (!strncasecmp(who, "/freebusy/", 10)) {
1022                 strcpy(who, &who[10]);
1023         }
1024         unescape_input(who);
1025
1026         len = strlen(who);
1027         if ( (!strcasecmp(&who[len-4], ".vcf"))
1028              || (!strcasecmp(&who[len-4], ".ifb"))
1029              || (!strcasecmp(&who[len-4], ".vfb")) ) {
1030                 who[len-4] = 0;
1031         }
1032
1033         lprintf(9, "freebusy requested for <%s>\n", who);
1034         serv_printf("ICAL freebusy|%s", who);
1035         serv_getln(buf, sizeof buf);
1036
1037         if (buf[0] != '1') {
1038                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
1039                 output_headers(0, 0, 0, 0, 0, 0);
1040                 wprintf("Content-Type: text/plain\r\n");
1041                 wprintf("\r\n");
1042                 wprintf("%s\n", &buf[4]);
1043                 return;
1044         }
1045
1046         fb = read_server_text();
1047         http_transmit_thing(fb, strlen(fb), "text/calendar", 0);
1048         free(fb);
1049 }
1050