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
 391
 392 /**
 393  * \brief get items, keep them.
 394  * If we're reading calendar items, just store them for now.  We have to
 395  * sort and re-output them later when we draw the calendar.
 396  * \param cal Our calendar to process
 397  * \param msgnum number of the mesage in our db
 398  */
 399 void display_individual_cal(icalcomponent *cal, long msgnum, char *from, int unread)
 400 {
 401         struct wcsession *WCC = WC;     /* stack this for faster access (WC is a function) */
 402
 403         WCC->num_cal += 1;
 404         WCC->disp_cal = realloc(WC->disp_cal, (sizeof(struct disp_cal) * WCC->num_cal) );
 405         WCC->disp_cal[WCC->num_cal - 1].cal = icalcomponent_new_clone(cal);
 406         WCC->disp_cal[WCC->num_cal - 1].unread = unread;
 407         WCC->disp_cal[WCC->num_cal - 1].from = malloc (strlen(from) + 1);
 408         strcpy (WCC->disp_cal[WCC->num_cal - 1].from, from);
 409         ical_dezonify(WCC->disp_cal[WCC->num_cal - 1].cal);
 410         WCC->disp_cal[WCC->num_cal - 1].cal_msgnum = msgnum;
 411 }
 412
 413
 414
 415 /**
 416  * \brief edit a task
 417  * Display a task by itself (for editing)
 418  * \param supplied_vtodo the todo item we want to edit
 419  * \param msgnum number of the mesage in our db
 420  */
 421 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum, char *from, int unread)
 422 {
 423         icalcomponent *vtodo;
 424         icalproperty *p;
 425         struct icaltimetype t;
 426         time_t now;
 427         int created_new_vtodo = 0;
 428
 429         now = time(NULL);
 430
 431         if (supplied_vtodo != NULL) {
 432                 vtodo = supplied_vtodo;
 433
 434                 /**
 435                  * If we're looking at a fully encapsulated VCALENDAR
 436                  * rather than a VTODO component, attempt to use the first
 437                  * relevant VTODO subcomponent.  If there is none, the
 438                  * NULL returned by icalcomponent_get_first_component() will
 439                  * tell the next iteration of this function to create a
 440                  * new one.
 441                  */
 442                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 443                         display_edit_individual_task(
 444                                 icalcomponent_get_first_component(
 445                                         vtodo, ICAL_VTODO_COMPONENT
 446                                         ),
 447                                 msgnum,
 448                                 from, unread
 449                                 );
 450                         return;
 451                 }
 452         }
 453         else {
 454                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 455                 created_new_vtodo = 1;
 456         }
 457
 458         // TODO: Can we take all this and move it into a template?
 459         output_headers(1, 1, 1, 0, 0, 0);
 460         wprintf("<!-- start task edit form -->");
 461         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 462         // Get summary early for title
 463         wprintf("<div class=\"box\">\n");
 464         wprintf("<div class=\"boxlabel\">");
 465         wprintf(_("Edit task"));
 466         wprintf("- ");
 467         if (p != NULL) {
 468                 escputs((char *)icalproperty_get_comment(p));
 469         }
 470         wprintf("</div>");
 471
 472         wprintf("<div class=\"boxcontent\">\n");
 473         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 474         wprintf("<div style=\"display: none;\">\n       ");
 475         wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%ld\">\n", WC->nonce);
 476         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 477                 msgnum);
 478         wprintf("</div>");
 479         wprintf("<table class=\"calendar_background\"><tr><td>");
 480         wprintf("<TABLE STYLE=\"border: none;\">\n");
 481
 482         wprintf("<TR><TD>");
 483         wprintf(_("Summary:"));
 484         wprintf("</TD><TD>"
 485                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 486                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 487         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 488         if (p != NULL) {
 489                 escputs((char *)icalproperty_get_comment(p));
 490         }
 491         wprintf("\"></TD></TR>\n");
 492
 493         wprintf("<TR><TD>");
 494         wprintf(_("Start date:"));
 495         wprintf("</TD><TD>");
 496         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 497         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodtstart\" ID=\"nodtstart\" VALUE=\"NODTSTART\" ");
 498         if (p == NULL) {
 499                 wprintf("CHECKED=\"CHECKED\"");
 500         }
 501         wprintf(">");
 502         wprintf(_("No date"));
 503
 504         wprintf(" ");
 505         wprintf(_("or"));
 506         wprintf(" ");
 507         if (p != NULL) {
 508                 t = icalproperty_get_dtstart(p);
 509         }
 510         display_icaltimetype_as_webform(&t, "dtstart");
 511         wprintf("</TD></TR>\n");
 512
 513         wprintf("<TR><TD>");
 514         wprintf(_("Due date:"));
 515         wprintf("</TD><TD>");
 516         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 517         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"nodue\" ID=\"nodue\" VALUE=\"NODUE\"");
 518         if (p == NULL) {
 519                 wprintf("CHECKED=\"CHECKED\"");
 520         }
 521         wprintf(">");
 522         wprintf(_("No date"));
 523         wprintf(" ");
 524         wprintf(_("or"));
 525         wprintf(" ");
 526         if (p != NULL) {
 527                 t = icalproperty_get_due(p);
 528         }
 529         display_icaltimetype_as_webform(&t, "due");
 530
 531         wprintf("</TD></TR>\n");
 532         icalproperty_status todoStatus = icalcomponent_get_status(vtodo);
 533         wprintf("<TR><TD>\n");
 534         wprintf(_("Completed:"));
 535         wprintf("</TD><TD>");
 536         wprintf("<INPUT TYPE=\"CHECKBOX\" NAME=\"STATUS\" VALUE=\"COMPLETED\"");
 537         if (todoStatus == ICAL_STATUS_COMPLETED) {
 538                 wprintf(" CHECKED=\"CHECKED\"");
 539         }
 540         wprintf(" >");
 541         wprintf("</TD></TR>");
 542         // start category field
 543         p = icalcomponent_get_first_property(vtodo, ICAL_CATEGORIES_PROPERTY);
 544         wprintf("<TR><TD>");
 545         wprintf(_("Category:"));
 546         wprintf("</TD><TD>");
 547         wprintf("<INPUT TYPE=\"text\" NAME=\"category\" MAXLENGTH=\"32\" SIZE=\"32\" VALUE=\"");
 548         if (p != NULL) {
 549                 escputs((char *)icalproperty_get_categories(p));
 550         }
 551         wprintf("\">");
 552         wprintf("</TD></TR>\n   ");
 553         // end category field
 554         wprintf("<TR><TD>");
 555         wprintf(_("Description:"));
 556         wprintf("</TD><TD>");
 557         wprintf("<TEXTAREA NAME=\"description\" "
 558                 "ROWS=\"10\" COLS=\"80\">\n"
 559                 );
 560         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 561         if (p != NULL) {
 562                 escputs((char *)icalproperty_get_comment(p));
 563         }
 564         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 565
 566         wprintf("<SPAN STYLE=\"text-align: center;\">"
 567                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 568                 "&nbsp;&nbsp;"
 569                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 570                 "&nbsp;&nbsp;"
 571                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 572                 "</SPAN>\n",
 573                 _("Save"),
 574                 _("Delete"),
 575                 _("Cancel")
 576                 );
 577         wprintf("</td></tr></table>");
 578         wprintf("</FORM>\n");
 579         wprintf("</div></div></div>\n");
 580         wprintf("<!-- end task edit form -->");
 581         wDumpContent(1);
 582
 583         if (created_new_vtodo) {
 584                 icalcomponent_free(vtodo);
 585         }
 586 }
 587
 588 /*
 589  * \brief Save an edited task
 590  * \param supplied_vtodo the task to save
 591  * \param msgnum number of the mesage in our db
 592  */
 593 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum, char* from, int unread)
 594 {
 595         char buf[SIZ];
 596         int delete_existing = 0;
 597         icalproperty *prop;
 598         icalcomponent *vtodo, *encaps;
 599         int created_new_vtodo = 0;
 600         int i;
 601         int sequence = 0;
 602         struct icaltimetype t;
 603
 604         if (supplied_vtodo != NULL) {
 605                 vtodo = supplied_vtodo;
 606                 /**
 607                  * If we're looking at a fully encapsulated VCALENDAR
 608                  * rather than a VTODO component, attempt to use the first
 609                  * relevant VTODO subcomponent.  If there is none, the
 610                  * NULL returned by icalcomponent_get_first_component() will
 611                  * tell the next iteration of this function to create a
 612                  * new one.
 613                  */
 614                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 615                         save_individual_task(
 616                                 icalcomponent_get_first_component(
 617                                         vtodo, ICAL_VTODO_COMPONENT),
 618                                 msgnum, from, unread
 619                                 );
 620                         return;
 621                 }
 622         }
 623         else {
 624                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 625                 created_new_vtodo = 1;
 626         }
 627
 628         if (havebstr("save_button")) {
 629
 630                 /** Replace values in the component with ones from the form */
 631
 632                 while (prop = icalcomponent_get_first_property(vtodo,
 633                                                                ICAL_SUMMARY_PROPERTY), prop != NULL) {
 634                         icalcomponent_remove_property(vtodo, prop);
 635                         icalproperty_free(prop);
 636                 }
 637                 if (havebstr("summary")) {
 638
 639                         icalcomponent_add_property(vtodo,
 640                                                    icalproperty_new_summary(bstr("summary")));
 641                 } else {
 642                         icalcomponent_add_property(vtodo,
 643                                                    icalproperty_new_summary("Untitled Task"));
 644                 }
 645
 646                 while (prop = icalcomponent_get_first_property(vtodo,
 647                                                                ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 648                         icalcomponent_remove_property(vtodo, prop);
 649                         icalproperty_free(prop);
 650                 }
 651                 if (!IsEmptyStr(bstr("description"))) {
 652                         icalcomponent_add_property(vtodo,
 653                                                    icalproperty_new_description(bstr("description")));
 654                 }
 655
 656                 while (prop = icalcomponent_get_first_property(vtodo,
 657                                                                ICAL_DTSTART_PROPERTY), prop != NULL) {
 658                         icalcomponent_remove_property(vtodo, prop);
 659                         icalproperty_free(prop);
 660                 }
 661                 if (IsEmptyStr(bstr("nodtstart"))) {
 662                         icaltime_from_webform(&t, "dtstart");
 663                         icalcomponent_add_property(vtodo,
 664                                                    icalproperty_new_dtstart(t)
 665                                 );
 666                 }
 667                 while(prop = icalcomponent_get_first_property(vtodo,
 668                                                               ICAL_STATUS_PROPERTY), prop != NULL) {
 669                         icalcomponent_remove_property(vtodo,prop);
 670                         icalproperty_free(prop);
 671                 }
 672                 if (!IsEmptyStr(bstr("status"))) {
 673                         icalproperty_status taskStatus = icalproperty_string_to_status(
 674                                 bstr("status"));
 675                         icalcomponent_set_status(vtodo, taskStatus);
 676                 }
 677                 while (prop = icalcomponent_get_first_property(vtodo,
 678                                                                ICAL_CATEGORIES_PROPERTY), prop != NULL) {
 679                         icalcomponent_remove_property(vtodo,prop);
 680                         icalproperty_free(prop);
 681                 }
 682                 if (!IsEmptyStr(bstr("category"))) {
 683                         prop = icalproperty_new_categories(bstr("category"));
 684                         icalcomponent_add_property(vtodo,prop);
 685                 }
 686                 while (prop = icalcomponent_get_first_property(vtodo,
 687                                                                ICAL_DUE_PROPERTY), prop != NULL) {
 688                         icalcomponent_remove_property(vtodo, prop);
 689                         icalproperty_free(prop);
 690                 }
 691                 if (IsEmptyStr(bstr("nodue"))) {
 692                         icaltime_from_webform(&t, "due");
 693                         icalcomponent_add_property(vtodo,
 694                                                    icalproperty_new_due(t)
 695                                 );
 696                 }
 697                 /** Give this task a UID if it doesn't have one. */
 698                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 699                 if (icalcomponent_get_first_property(vtodo,
 700                                                      ICAL_UID_PROPERTY) == NULL) {
 701                         generate_uuid(buf);
 702                         icalcomponent_add_property(vtodo,
 703                                                    icalproperty_new_uid(buf)
 704                                 );
 705                 }
 706
 707                 /** Increment the sequence ID */
 708                 lprintf(9, "Increment the sequence ID\n");
 709                 while (prop = icalcomponent_get_first_property(vtodo,
 710                                                                ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 711                         i = icalproperty_get_sequence(prop);
 712                         lprintf(9, "Sequence was %d\n", i);
 713                         if (i > sequence) sequence = i;
 714                         icalcomponent_remove_property(vtodo, prop);
 715                         icalproperty_free(prop);
 716                 }
 717                 ++sequence;
 718                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 719                 icalcomponent_add_property(vtodo,
 720                                            icalproperty_new_sequence(sequence)
 721                         );
 722
 723                 /**
 724                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 725                  * for two reasons: one, it's easier to just free the whole thing
 726                  * when we're done instead of unbundling, but more importantly, we
 727                  * can't encapsulate something that may already be encapsulated
 728                  * somewhere else.
 729                  */
 730                 lprintf(9, "Encapsulating into a full VCALENDAR component\n");
 731                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 732
 733                 /* Serialize it and save it to the message base */
 734                 serv_puts("ENT0 1|||4");
 735                 serv_getln(buf, sizeof buf);
 736                 if (buf[0] == '4') {
 737                         serv_puts("Content-type: text/calendar");
 738                         serv_puts("");
 739                         serv_puts(icalcomponent_as_ical_string(encaps));
 740                         serv_puts("000");
 741
 742                         /**
 743                          * Probably not necessary; the server will see the UID
 744                          * of the object and delete the old one anyway, but
 745                          * just in case...
 746                          */
 747                         delete_existing = 1;
 748                 }
 749                 icalcomponent_free(encaps);
 750         }
 751
 752         /**
 753          * If the user clicked 'Delete' then explicitly delete the message.
 754          */
 755         if (havebstr("delete_button")) {
 756                 delete_existing = 1;
 757         }
 758
 759         if ( (delete_existing) && (msgnum > 0L) ) {
 760                 serv_printf("DELE %ld", lbstr("msgnum"));
 761                 serv_getln(buf, sizeof buf);
 762         }
 763
 764         if (created_new_vtodo) {
 765                 icalcomponent_free(vtodo);
 766         }
 767
 768         /** Go back to the task list */
 769         readloop("readfwd");
 770 }
 771
 772
 773
 774 /**
 775  * \brief generic item handler
 776  * Code common to all display handlers.  Given a message number and a MIME
 777  * type, we load the message and hunt for that MIME type.  If found, we load
 778  * the relevant part, deserialize it into a libical component, filter it for
 779  * the requested object type, and feed it to the specified handler.
 780  * \param mimetype mimetyp of our object
 781  * \param which_kind sort of ical type
 782  * \param msgnum number of the mesage in our db
 783  * \param callback a funcion \todo
 784  *
 785  */
 786 void display_using_handler(long msgnum, int unread,
 787                            icalcomponent_kind which_kind,
 788                            void (*callback)(icalcomponent *, long, char*, int)
 789         )
 790 {
 791         char buf[1024];
 792         char from[128] = "";
 793         char mime_partnum[256];
 794         char mime_filename[256];
 795         char mime_content_type[256];
 796         char mime_disposition[256];
 797         int mime_length;
 798         char relevant_partnum[256];
 799         char *relevant_source = NULL;
 800         icalcomponent *cal, *c;
 801
 802         relevant_partnum[0] = '\0';
 803         sprintf(buf, "MSG4 %ld", msgnum);       /* we need the mime headers */
 804         serv_puts(buf);
 805         serv_getln(buf, sizeof buf);
 806         if (buf[0] != '1') return;
 807
 808         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 809                 if (!strncasecmp(buf, "part=", 5)) {
 810                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 811                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 812                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 813                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 814                         mime_length = extract_int(&buf[5], 5);
 815
 816                         if (  (!strcasecmp(mime_content_type, "text/calendar"))
 817                               || (!strcasecmp(mime_content_type, "application/ics"))
 818                               || (!strcasecmp(mime_content_type, "text/vtodo"))
 819                                 ) {
 820                                 strcpy(relevant_partnum, mime_partnum);
 821                         }
 822                 }
 823                 else if (!strncasecmp(buf, "from=", 4)) {
 824                         extract_token(from, buf, 1, '=', sizeof(from));
 825                 }
 826         }
 827
 828         if (!IsEmptyStr(relevant_partnum)) {
 829                 relevant_source = load_mimepart(msgnum, relevant_partnum);
 830                 if (relevant_source != NULL) {
 831
 832                         cal = icalcomponent_new_from_string(relevant_source);
 833                         if (cal != NULL) {
 834
 835                                 ical_dezonify(cal);
 836
 837                                 /** Simple components of desired type */
 838                                 if (icalcomponent_isa(cal) == which_kind) {
 839                                         callback(cal, msgnum, from, unread);
 840                                 }
 841
 842                                 /** Subcomponents of desired type */
 843                                 for (c = icalcomponent_get_first_component(cal,
 844                                                                            which_kind);
 845                                      (c != 0);
 846                                      c = icalcomponent_get_next_component(cal,
 847                                                                           which_kind)) {
 848                                         callback(c, msgnum, from, unread);
 849                                 }
 850                                 icalcomponent_free(cal);
 851                         }
 852                         free(relevant_source);
 853                 }
 854         }
 855         icalmemory_free_ring();
 856 }
 857
 858 /**
 859  * \brief display whole calendar
 860  * \param msgnum number of the mesage in our db
 861  */
 862 void display_calendar(long msgnum, int unread) {
 863         display_using_handler(msgnum, unread,
 864                               ICAL_VEVENT_COMPONENT,
 865                               display_individual_cal);
 866 }
 867
 868 /**
 869  * \brief display whole taksview
 870  * \param msgnum number of the mesage in our db
 871  */
 872 void display_task(long msgnum, int unread) {
 873         display_using_handler(msgnum, unread,
 874                               ICAL_VTODO_COMPONENT,
 875                               display_individual_cal);
 876 }
 877
 878 /**
 879  * \brief display the editor component for a task
 880  */
 881 void display_edit_task(void) {
 882         long msgnum = 0L;
 883
 884         /** Force change the room if we have to */
 885         if (havebstr("taskrm")) {
 886                 gotoroom((char *)bstr("taskrm"));
 887         }
 888
 889         msgnum = lbstr("msgnum");
 890         if (msgnum > 0L) {
 891                 /** existing task */
 892                 display_using_handler(msgnum, 0,
 893                                       ICAL_VTODO_COMPONENT,
 894                                       display_edit_individual_task);
 895         }
 896         else {
 897                 /** new task */
 898                 display_edit_individual_task(NULL, 0L, "", 0);
 899         }
 900 }
 901
 902 /**
 903  *\brief save an edited task
 904  */
 905 void save_task(void) {
 906         long msgnum = 0L;
 907
 908         msgnum = lbstr("msgnum");
 909         if (msgnum > 0L) {
 910                 display_using_handler(msgnum, 0,
 911                                       ICAL_VTODO_COMPONENT,
 912                                       save_individual_task);
 913         }
 914         else {
 915                 save_individual_task(NULL, 0L, "", 0);
 916         }
 917 }
 918
 919 /**
 920  * \brief display the editor component for an event
 921  */
 922 void display_edit_event(void) {
 923         long msgnum = 0L;
 924
 925         msgnum = lbstr("msgnum");
 926         if (msgnum > 0L) {
 927                 /* existing event */
 928                 display_using_handler(msgnum, 0,
 929                                       ICAL_VEVENT_COMPONENT,
 930                                       display_edit_individual_event);
 931         }
 932         else {
 933                 /* new event */
 934                 display_edit_individual_event(NULL, 0L, "", 0);
 935         }
 936 }
 937
 938 /**
 939  * \brief save an edited event
 940  */
 941 void save_event(void) {
 942         long msgnum = 0L;
 943
 944         msgnum = lbstr("msgnum");
 945
 946         if (msgnum > 0L) {
 947                 display_using_handler(msgnum, 0,
 948                                       ICAL_VEVENT_COMPONENT,
 949                                       save_individual_event);
 950         }
 951         else {
 952                 save_individual_event(NULL, 0L, "", 0);
 953         }
 954 }
 955
 956
 957
 958
 959
 960 /**
 961  * \brief freebusy display (for client software)
 962  * \param req dunno. ?????
 963  */
 964 void do_freebusy(char *req) {
 965         char who[SIZ];
 966         char buf[SIZ];
 967         char *fb;
 968         int len;
 969
 970         extract_token(who, req, 1, ' ', sizeof who);
 971         if (!strncasecmp(who, "/freebusy/", 10)) {
 972                 strcpy(who, &who[10]);
 973         }
 974         unescape_input(who);
 975
 976         len = strlen(who);
 977         if ( (!strcasecmp(&who[len-4], ".vcf"))
 978              || (!strcasecmp(&who[len-4], ".ifb"))
 979              || (!strcasecmp(&who[len-4], ".vfb")) ) {
 980                 who[len-4] = 0;
 981         }
 982
 983         lprintf(9, "freebusy requested for <%s>\n", who);
 984         serv_printf("ICAL freebusy|%s", who);
 985         serv_getln(buf, sizeof buf);
 986
 987         if (buf[0] != '1') {
 988                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
 989                 output_headers(0, 0, 0, 0, 0, 0);
 990                 wprintf("Content-Type: text/plain\r\n");
 991                 wprintf("\r\n");
 992                 wprintf("%s\n", &buf[4]);
 993                 return;
 994         }
 995
 996         fb = read_server_text();
 997         http_transmit_thing(fb, strlen(fb), "text/calendar", 0);
 998         free(fb);
 999 }
1000