webcit/calendar.c

   1 /*
   2  * $Id$
   3  */
   4 /**
   5  * \defgroup calav Functions which handle calendar objects and their processing/display.
   6  * \todo parts aren't parsed by doxygen
   7  */
   8 /* @{ */
   9
  10 #include "webcit.h"
  11 #include "webserver.h"
  12
  13 #ifndef WEBCIT_WITH_CALENDAR_SERVICE
  14
  15 /**
  16  * \brief get around non existing types
  17  * Handler stubs for builds with no calendar library available
  18  * \param part_source dummy pointer to the source
  19  * \param msgnum number of the mesage in the db
  20  * \param cal_partnum number of the calendar part
  21  */
  22 void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum) {
  23
  24         wprintf(_("<I>This message contains calendaring/scheduling information,"
  25                 " but support for calendars is not available on this "
  26                 "particular system.  Please ask your system administrator to "
  27                 "install a new version of the Citadel web service with "
  28                 "calendaring enabled.</I><br />\n")
  29         );
  30
  31 }
  32
  33 /**
  34  * \brief say we can't display calendar items
  35  * \param msgnum number of the mesage in our db
  36  */
  37 void display_calendar(long msgnum) {
  38         wprintf(_("<i>"
  39                 "Cannot display calendar item.  You are seeing this error "
  40                 "because your WebCit service has not been installed with "
  41                 "calendar support.  Please contact your system administrator."
  42                 "</i><br />\n"));
  43 }
  44
  45 /**
  46  * \brief say we can't display task items
  47  * \param msgnum number of the mesage in our db
  48  */
  49 void display_task(long msgnum) {
  50         wprintf(_("<i>"
  51                 "Cannot display to-do item.  You are seeing this error "
  52                 "because your WebCit service has not been installed with "
  53                 "calendar support.  Please contact your system administrator."
  54                 "</i><br />\n"));
  55 }
  56 /** ok, we have calendaring available */
  57 #else /* WEBCIT_WITH_CALENDAR_SERVICE */
  58
  59
  60 /******   End of handler stubs.  Everything below this line is real.   ******/
  61
  62
  63
  64
  65 /**
  66  * \brief Process a calendar object
  67  * ...at this point it's already been deserialized by cal_process_attachment()
  68  * \param cal teh calendar object
  69  * \param recursion_level call stack depth ??????
  70  * \param msgnum number of the mesage in our db
  71  * \param cal_partnum of the calendar object ????
  72  */
  73 void cal_process_object(icalcomponent *cal,
  74                         int recursion_level,
  75                         long msgnum,
  76                         char *cal_partnum
  77 ) {
  78         icalcomponent *c;
  79         icalproperty *method = NULL;
  80         icalproperty_method the_method = ICAL_METHOD_NONE;
  81         icalproperty *p;
  82         struct icaltimetype t;
  83         time_t tt;
  84         char buf[256];
  85         char conflict_name[256];
  86         char conflict_message[256];
  87         int is_update = 0;
  88
  89         /** Leading HTML for the display of this object */
  90         if (recursion_level == 0) {
  91                 wprintf("<CENTER><TABLE border=0>\n");
  92         }
  93
  94         /** Look for a method */
  95         method = icalcomponent_get_first_property(cal, ICAL_METHOD_PROPERTY);
  96
  97         /** See what we need to do with this */
  98         if (method != NULL) {
  99                 the_method = icalproperty_get_method(method);
 100                 switch(the_method) {
 101                     case ICAL_METHOD_REQUEST:
 102                         wprintf("<tr><td colspan=\"2\">\n"
 103                                 "<img align=\"center\" "
 104                                 "src=\"static/calarea_48x.gif\">"
 105                                 "&nbsp;&nbsp;"
 106                                 "<B>");
 107                         wprintf(_("Meeting invitation"));
 108                         wprintf("</B></TD></TR>\n");
 109                         break;
 110                     case ICAL_METHOD_REPLY:
 111                         wprintf("<TR><TD COLSPAN=2>\n"
 112                                 "<IMG ALIGN=CENTER "
 113                                 "src=\"static/calarea_48x.gif\">"
 114                                 "&nbsp;&nbsp;"
 115                                 "<B>");
 116                         wprintf(_("Attendee's reply to your invitation"));
 117                         wprintf("</B></TD></TR>\n");
 118                         break;
 119                     case ICAL_METHOD_PUBLISH:
 120                         wprintf("<TR><TD COLSPAN=2>\n"
 121                                 "<IMG ALIGN=CENTER "
 122                                 "src=\"static/calarea_48x.gif\">"
 123                                 "&nbsp;&nbsp;"
 124                                 "<B>");
 125                         wprintf(_("Published event"));
 126                         wprintf("</B></TD></TR>\n");
 127                         break;
 128                     default:
 129                         wprintf("<TR><TD COLSPAN=2>");
 130                         wprintf(_("This is an unknown type of calendar item."));
 131                         wprintf("</TD></TR>\n");
 132                         break;
 133                 }
 134         }
 135
 136         p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
 137         if (p != NULL) {
 138                 wprintf("<TR><TD><B>");
 139                 wprintf(_("Summary:"));
 140                 wprintf("</B></TD><TD>");
 141                 escputs((char *)icalproperty_get_comment(p));
 142                 wprintf("</TD></TR>\n");
 143         }
 144
 145         p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
 146         if (p != NULL) {
 147                 wprintf("<TR><TD><B>");
 148                 wprintf(_("Location:"));
 149                 wprintf("</B></TD><TD>");
 150                 escputs((char *)icalproperty_get_comment(p));
 151                 wprintf("</TD></TR>\n");
 152         }
 153
 154         /**
 155          * Only show start/end times if we're actually looking at the VEVENT
 156          * component.  Otherwise it shows bogus dates for things like timezone.
 157          */
 158         if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
 159
 160                 p = icalcomponent_get_first_property(cal,
 161                                                 ICAL_DTSTART_PROPERTY);
 162                 if (p != NULL) {
 163                         t = icalproperty_get_dtstart(p);
 164
 165                         if (t.is_date) {
 166                                 wprintf("<TR><TD><B>");
 167                                 wprintf(_("Date:"));
 168                                 wprintf("</B></TD><TD>"
 169                                         "%s %d, %d</TD></TR>",
 170                                         months[t.month - 1],
 171                                         t.day, t.year
 172                                 );
 173                         }
 174                         else {
 175                                 tt = icaltime_as_timet(t);
 176                                 fmt_date(buf, tt, 0);
 177                                 wprintf("<TR><TD><B>");
 178                                 wprintf(_("Starting date/time:"));
 179                                 wprintf("</B></TD><TD>%s</TD></TR>", buf);
 180                         }
 181                 }
 182
 183                 p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
 184                 if (p != NULL) {
 185                         t = icalproperty_get_dtend(p);
 186                         tt = icaltime_as_timet(t);
 187                         fmt_date(buf, tt, 0);
 188                         wprintf("<TR><TD><B>");
 189                         wprintf(_("Ending date/time:"));
 190                         wprintf("</B></TD><TD>%s</TD></TR>", buf);
 191                 }
 192
 193         }
 194
 195         p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
 196         if (p != NULL) {
 197                 wprintf("<TR><TD><B>");
 198                 wprintf(_("Description:"));
 199                 wprintf("</B></TD><TD>");
 200                 escputs((char *)icalproperty_get_comment(p));
 201                 wprintf("</TD></TR>\n");
 202         }
 203
 204         /** If the component has attendees, iterate through them. */
 205         for (p = icalcomponent_get_first_property(cal, ICAL_ATTENDEE_PROPERTY); (p != NULL); p = icalcomponent_get_next_property(cal, ICAL_ATTENDEE_PROPERTY)) {
 206                 wprintf("<TR><TD><B>");
 207                 wprintf(_("Attendee:"));
 208                 wprintf("</B></TD><TD>");
 209                 safestrncpy(buf, icalproperty_get_attendee(p), sizeof buf);
 210                 if (!strncasecmp(buf, "MAILTO:", 7)) {
 211
 212                         /** screen name or email address */
 213                         strcpy(buf, &buf[7]);
 214                         striplt(buf);
 215                         escputs(buf);
 216                         wprintf(" ");
 217
 218                         /** participant status */
 219                         partstat_as_string(buf, p);
 220                         escputs(buf);
 221                 }
 222                 wprintf("</TD></TR>\n");
 223         }
 224
 225         /** If the component has subcomponents, recurse through them. */
 226         for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
 227             (c != 0);
 228             c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
 229                 /* Recursively process subcomponent */
 230                 cal_process_object(c, recursion_level+1, msgnum, cal_partnum);
 231         }
 232
 233         /** If this is a REQUEST, display conflicts and buttons */
 234         if (the_method == ICAL_METHOD_REQUEST) {
 235
 236                 /* Check for conflicts */
 237                 lprintf(9, "Checking server calendar for conflicts...\n");
 238                 serv_printf("ICAL conflicts|%ld|%s|", msgnum, cal_partnum);
 239                 serv_getln(buf, sizeof buf);
 240                 if (buf[0] == '1') {
 241                         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 242                                 extract_token(conflict_name, buf, 3, '|', sizeof conflict_name);
 243                                 is_update = extract_int(buf, 4);
 244
 245                                 if (is_update) {
 246                                         snprintf(conflict_message, sizeof conflict_message,
 247                                                 _("This is an update of '%s' which is already in your calendar."), conflict_name);
 248                                 }
 249                                 else {
 250                                         snprintf(conflict_message, sizeof conflict_message,
 251                                                 _("This event would conflict with '%s' which is already in your calendar."), conflict_name);
 252                                 }
 253
 254                                 wprintf("<TR><TD><B><I>%s</I></B></TD><td>",
 255                                         (is_update ?
 256                                                 _("Update:") :
 257                                                 _("CONFLICT:")
 258                                         )
 259                                 );
 260                                 escputs(conflict_message);
 261                                 wprintf("</TD></TR>\n");
 262                         }
 263                 }
 264                 lprintf(9, "...done.\n");
 265
 266                 /** Display the Accept/Decline buttons */
 267                 wprintf("<TR><TD>How would you like to respond to this invitation?</td>"
 268                         "<td><FONT SIZE=+1>"
 269                         "<a href=\"respond_to_request?msgnum=%ld&cal_partnum=%s&sc=Accept\">%s</a>"
 270                         " | "
 271                         "<a href=\"respond_to_request?msgnum=%ld&cal_partnum=%s&sc=Tentative\">%s</a>"
 272                         " | "
 273                         "<a href=\"respond_to_request?msgnum=%ld&cal_partnum=%s&sc=Decline\">%s</a>"
 274                         "</FONT></TD></TR>\n",
 275                         msgnum, cal_partnum, _("Accept"),
 276                         msgnum, cal_partnum, _("Tentative"),
 277                         msgnum, cal_partnum, _("Decline")
 278                 );
 279
 280         }
 281
 282         /** If this is a REPLY, display update button */
 283         if (the_method == ICAL_METHOD_REPLY) {
 284
 285                 /** \todo  In the future, if we want to validate this object before \
 286                  * continuing, we can do it this way:
 287                 serv_printf("ICAL whatever|%ld|%s|", msgnum, cal_partnum);
 288                 serv_getln(buf, sizeof buf);
 289                 }
 290                  ***********/
 291
 292                 /** Display the update buttons */
 293                 wprintf("<TR><TD>"
 294                         "%s"
 295                         "</td><td><font size=+1>"
 296                         "<a href=\"handle_rsvp?msgnum=%ld&cal_partnum=%s&sc=Update\">%s</a>"
 297                         " | "
 298                         "<a href=\"handle_rsvp?msgnum=%ld&cal_partnum=%s&sc=Ignore\">%s</a>"
 299                         "</font>"
 300                         "</TD></TR>\n",
 301                         _("Click <i>Update</i> to accept this reply and update your calendar."),
 302                         msgnum, cal_partnum, _("Update"),
 303                         msgnum, cal_partnum, _("Ignore")
 304                 );
 305
 306         }
 307
 308         /** Trailing HTML for the display of this object */
 309         if (recursion_level == 0) {
 310
 311                 wprintf("</TR></TABLE></CENTER>\n");
 312         }
 313 }
 314
 315
 316 /**
 317  * \brief process calendar mail atachment
 318  * Deserialize a calendar object in a message so it can be processed.
 319  * (This is the main entry point for these things)
 320  * \param part_source the part of the message we want to parse
 321  * \param msgnum number of the mesage in our db
 322  * \param cal_partnum the number of the calendar item
 323  */
 324 void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum) {
 325         icalcomponent *cal;
 326
 327         cal = icalcomponent_new_from_string(part_source);
 328
 329         if (cal == NULL) {
 330                 wprintf(_("There was an error parsing this calendar item."));
 331                 wprintf("<br />\n");
 332                 return;
 333         }
 334
 335         ical_dezonify(cal);
 336         cal_process_object(cal, 0, msgnum, cal_partnum);
 337
 338         /* Free the memory we obtained from libical's constructor */
 339         icalcomponent_free(cal);
 340 }
 341
 342
 343
 344
 345 /**
 346  * \brief accept/decline meeting
 347  * Respond to a meeting request
 348  */
 349 void respond_to_request(void) {
 350         char buf[SIZ];
 351
 352         output_headers(1, 1, 2, 0, 0, 0);
 353
 354         wprintf("<div id=\"banner\">\n");
 355         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR><TD>"
 356                 "<SPAN CLASS=\"titlebar\">");
 357         wprintf(_("Respond to meeting request"));
 358         wprintf("</SPAN>"
 359                 "</TD></TR></TABLE>\n"
 360         );
 361         wprintf("</div>\n<div id=\"content\">\n");
 362
 363         serv_printf("ICAL respond|%s|%s|%s|",
 364                 bstr("msgnum"),
 365                 bstr("cal_partnum"),
 366                 bstr("sc")
 367         );
 368         serv_getln(buf, sizeof buf);
 369
 370         if (buf[0] == '2') {
 371                 wprintf("<TABLE BORDER=0><TR><TD>"
 372                         "<img src=\"static/calarea_48x.gif\" ALIGN=CENTER>"
 373                         "</TD><TD>"
 374                 );
 375                 if (!strcasecmp(bstr("sc"), "accept")) {
 376                         wprintf(_("You have accepted this meeting invitation.  "
 377                                 "It has been entered into your calendar.")
 378                         );
 379                 } else if (!strcasecmp(bstr("sc"), "tentative")) {
 380                         wprintf(_("You have tentatively accepted this meeting invitation.  "
 381                                 "It has been 'pencilled in' to your calendar.")
 382                         );
 383                 } else if (!strcasecmp(bstr("sc"), "decline")) {
 384                         wprintf(_("You have declined this meeting invitation.  "
 385                                 "It has <b>not</b> been entered into your calendar.")
 386                         );
 387                 }
 388                 wprintf(" ");
 389                 wprintf(_("A reply has been sent to the meeting organizer."));
 390                 wprintf("</TD></TR></TABLE>\n");
 391         } else {
 392                 wprintf("<img src=\"static/error.gif\" ALIGN=CENTER>"
 393                         "%s\n", &buf[4]);
 394         }
 395
 396         wprintf("<a href=\"dotskip?room=");
 397         urlescputs(WC->wc_roomname);
 398         wprintf("\"><br />");
 399         wprintf(_("Return to messages"));
 400         wprintf("</A><br />\n");
 401
 402         wDumpContent(1);
 403 }
 404
 405
 406
 407 /**
 408  * \brief Handle an incoming RSVP
 409  */
 410 void handle_rsvp(void) {
 411         char buf[SIZ];
 412
 413         output_headers(1, 1, 2, 0, 0, 0);
 414
 415         wprintf("<div id=\"banner\">\n");
 416         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR><TD>"
 417                 "<SPAN CLASS=\"titlebar\">");
 418         wprintf(_("Update your calendar with this RSVP"));
 419         wprintf("</SPAN>"
 420                 "</TD></TR></TABLE>\n"
 421                 "</div>\n<div id=\"content\">\n"
 422         );
 423
 424         serv_printf("ICAL handle_rsvp|%s|%s|%s|",
 425                 bstr("msgnum"),
 426                 bstr("cal_partnum"),
 427                 bstr("sc")
 428         );
 429         serv_getln(buf, sizeof buf);
 430
 431         if (buf[0] == '2') {
 432                 wprintf("<TABLE BORDER=0><TR><TD>"
 433                         "<img src=\"static/calarea_48x.gif\" ALIGN=CENTER>"
 434                         "</TD><TD>"
 435                 );
 436                 if (!strcasecmp(bstr("sc"), "update")) {
 437                         wprintf(_("Your calendar has been updated to reflect this RSVP."));
 438                 } else if (!strcasecmp(bstr("sc"), "ignore")) {
 439                         wprintf(_("You have chosen to ignore this RSVP. "
 440                                 "Your calendar has <b>not</b> been updated.")
 441                         );
 442                 }
 443                 wprintf("</TD></TR></TABLE>\n"
 444                 );
 445         } else {
 446                 wprintf("<img src=\"static/error.gif\" ALIGN=CENTER>"
 447                         "%s\n", &buf[4]);
 448         }
 449
 450         wprintf("<a href=\"dotskip?room=");
 451         urlescputs(WC->wc_roomname);
 452         wprintf("\"><br />");
 453         wprintf(_("Return to messages"));
 454         wprintf("</A><br />\n");
 455
 456         wDumpContent(1);
 457 }
 458
 459
 460
 461 /*@}*/
 462 /*-----------------------------------------------------------------------**/
 463
 464
 465
 466 /**
 467  * \defgroup MsgDisplayHandlers Display handlers for message reading
 468  * \todo why does doxygen not parse this? and generate another group?
 469  */
 470
 471 /*@{*/
 472
 473
 474
 475 /**
 476  * \brief get items, keep them.
 477  * If we're reading calendar items, just store them for now.  We have to
 478  * sort and re-output them later when we draw the calendar.
 479  * \param cal Our calendar to process
 480  * \param msgnum number of the mesage in our db
 481  */
 482 void display_individual_cal(icalcomponent *cal, long msgnum) {
 483
 484         WC->num_cal += 1;
 485
 486         WC->disp_cal = realloc(WC->disp_cal,
 487                         (sizeof(struct disp_cal) * WC->num_cal) );
 488         WC->disp_cal[WC->num_cal - 1].cal = icalcomponent_new_clone(cal);
 489
 490         WC->disp_cal[WC->num_cal - 1].cal_msgnum = msgnum;
 491 }
 492
 493
 494
 495 /*
 496  * \brief edit a task
 497  * Display a task by itself (for editing)
 498  * \param supplied_vtodo the todo item we want to edit
 499  * \param msgnum number of the mesage in our db
 500  */
 501 void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 502         icalcomponent *vtodo;
 503         icalproperty *p;
 504         struct icaltimetype t;
 505         time_t now;
 506         int created_new_vtodo = 0;
 507
 508         now = time(NULL);
 509
 510         if (supplied_vtodo != NULL) {
 511                 vtodo = supplied_vtodo;
 512
 513                 /**
 514                  * If we're looking at a fully encapsulated VCALENDAR
 515                  * rather than a VTODO component, attempt to use the first
 516                  * relevant VTODO subcomponent.  If there is none, the
 517                  * NULL returned by icalcomponent_get_first_component() will
 518                  * tell the next iteration of this function to create a
 519                  * new one.
 520                  */
 521                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 522                         display_edit_individual_task(
 523                                 icalcomponent_get_first_component(
 524                                         vtodo, ICAL_VTODO_COMPONENT
 525                                 ), msgnum
 526                         );
 527                         return;
 528                 }
 529         }
 530         else {
 531                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 532                 created_new_vtodo = 1;
 533         }
 534
 535         output_headers(1, 1, 2, 0, 0, 0);
 536         wprintf("<div id=\"banner\">\n"
 537                 "<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR>"
 538                 "<TD><img src=\"static/taskmanag_48x.gif\"></TD>"
 539                 "<td><SPAN CLASS=\"titlebar\">");
 540         wprintf(_("Edit task"));
 541         wprintf("</SPAN>"
 542                 "</TD></TR></TABLE>\n"
 543                 "</div>\n<div id=\"content\">\n"
 544         );
 545
 546         wprintf("<div class=\"fix_scrollbar_bug\">"
 547                 "<table border=0 width=100%% bgcolor=\"#ffffff\"><tr><td>");
 548
 549         wprintf("<FORM METHOD=\"POST\" action=\"save_task\">\n");
 550         wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
 551                 msgnum);
 552
 553         wprintf("<TABLE border=0>\n");
 554
 555         wprintf("<TR><TD>");
 556         wprintf(_("Summary:"));
 557         wprintf("</TD><TD>"
 558                 "<INPUT TYPE=\"text\" NAME=\"summary\" "
 559                 "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
 560         p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
 561         if (p != NULL) {
 562                 escputs((char *)icalproperty_get_comment(p));
 563         }
 564         wprintf("\"></TD></TR>\n");
 565
 566         wprintf("<TR><TD>");
 567         wprintf(_("Start date:"));
 568         wprintf("</TD><TD>");
 569         p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
 570         if (p != NULL) {
 571                 t = icalproperty_get_dtstart(p);
 572         }
 573         else {
 574                 t = icaltime_from_timet(now, 0);
 575         }
 576         display_icaltimetype_as_webform(&t, "dtstart");
 577         wprintf("</TD></TR>\n");
 578
 579         wprintf("<TR><TD>");
 580         wprintf(_("Due date:"));
 581         wprintf("</TD><TD>");
 582         p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
 583         if (p != NULL) {
 584                 t = icalproperty_get_due(p);
 585         }
 586         else {
 587                 t = icaltime_from_timet(now, 0);
 588         }
 589         display_icaltimetype_as_webform(&t, "due");
 590         wprintf("</TD></TR>\n");
 591         wprintf("<TR><TD>");
 592         wprintf(_("Description:"));
 593         wprintf("</TD><TD>");
 594         wprintf("<TEXTAREA NAME=\"description\" wrap=soft "
 595                 "ROWS=10 COLS=80 WIDTH=80>\n"
 596         );
 597         p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
 598         if (p != NULL) {
 599                 escputs((char *)icalproperty_get_comment(p));
 600         }
 601         wprintf("</TEXTAREA></TD></TR></TABLE>\n");
 602
 603         wprintf("<CENTER>"
 604                 "<INPUT TYPE=\"submit\" NAME=\"save_button\" VALUE=\"%s\">"
 605                 "&nbsp;&nbsp;"
 606                 "<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 607                 "&nbsp;&nbsp;"
 608                 "<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 609                 "</CENTER>\n",
 610                 _("Save"),
 611                 _("Delete"),
 612                 _("Cancel")
 613         );
 614
 615         wprintf("</FORM>\n");
 616
 617         wprintf("</td></tr></table></div>\n");
 618         wDumpContent(1);
 619
 620         if (created_new_vtodo) {
 621                 icalcomponent_free(vtodo);
 622         }
 623 }
 624
 625 /*
 626  * \brief Save an edited task
 627  * \param supplied_vtodo the task to save
 628  * \param msgnum number of the mesage in our db
 629  */
 630 void save_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
 631         char buf[SIZ];
 632         int delete_existing = 0;
 633         icalproperty *prop;
 634         icalcomponent *vtodo, *encaps;
 635         int created_new_vtodo = 0;
 636         int i;
 637         int sequence = 0;
 638         struct icaltimetype t;
 639
 640         if (supplied_vtodo != NULL) {
 641                 vtodo = supplied_vtodo;
 642                 /**
 643                  * If we're looking at a fully encapsulated VCALENDAR
 644                  * rather than a VTODO component, attempt to use the first
 645                  * relevant VTODO subcomponent.  If there is none, the
 646                  * NULL returned by icalcomponent_get_first_component() will
 647                  * tell the next iteration of this function to create a
 648                  * new one.
 649                  */
 650                 if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
 651                         save_individual_task(
 652                                 icalcomponent_get_first_component(
 653                                         vtodo, ICAL_VTODO_COMPONENT
 654                                 ), msgnum
 655                         );
 656                         return;
 657                 }
 658         }
 659         else {
 660                 vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
 661                 created_new_vtodo = 1;
 662         }
 663
 664         if (strlen(bstr("save_button")) > 0) {
 665
 666                 /** Replace values in the component with ones from the form */
 667
 668                 while (prop = icalcomponent_get_first_property(vtodo,
 669                       ICAL_SUMMARY_PROPERTY), prop != NULL) {
 670                         icalcomponent_remove_property(vtodo, prop);
 671                         icalproperty_free(prop);
 672                 }
 673                 icalcomponent_add_property(vtodo,
 674                         icalproperty_new_summary(bstr("summary")));
 675
 676                 while (prop = icalcomponent_get_first_property(vtodo,
 677                       ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
 678                         icalcomponent_remove_property(vtodo, prop);
 679                         icalproperty_free(prop);
 680                 }
 681                 icalcomponent_add_property(vtodo,
 682                         icalproperty_new_description(bstr("description")));
 683
 684                 while (prop = icalcomponent_get_first_property(vtodo,
 685                       ICAL_DTSTART_PROPERTY), prop != NULL) {
 686                         icalcomponent_remove_property(vtodo, prop);
 687                         icalproperty_free(prop);
 688                 }
 689                 icaltime_from_webform(&t, "dtstart");
 690                 icalcomponent_add_property(vtodo,
 691                         icalproperty_new_dtstart(t)
 692                 );
 693
 694                 while (prop = icalcomponent_get_first_property(vtodo,
 695                       ICAL_DUE_PROPERTY), prop != NULL) {
 696                         icalcomponent_remove_property(vtodo, prop);
 697                         icalproperty_free(prop);
 698                 }
 699                 icaltime_from_webform(&t, "due");
 700                 icalcomponent_add_property(vtodo,
 701                         icalproperty_new_due(t)
 702                 );
 703
 704                 /** Give this task a UID if it doesn't have one. */
 705                 lprintf(9, "Give this task a UID if it doesn't have one.\n");
 706                 if (icalcomponent_get_first_property(vtodo,
 707                    ICAL_UID_PROPERTY) == NULL) {
 708                         generate_uuid(buf);
 709                         icalcomponent_add_property(vtodo,
 710                                 icalproperty_new_uid(buf)
 711                         );
 712                 }
 713
 714                 /** Increment the sequence ID */
 715                 lprintf(9, "Increment the sequence ID\n");
 716                 while (prop = icalcomponent_get_first_property(vtodo,
 717                       ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
 718                         i = icalproperty_get_sequence(prop);
 719                         lprintf(9, "Sequence was %d\n", i);
 720                         if (i > sequence) sequence = i;
 721                         icalcomponent_remove_property(vtodo, prop);
 722                         icalproperty_free(prop);
 723                 }
 724                 ++sequence;
 725                 lprintf(9, "New sequence is %d.  Adding...\n", sequence);
 726                 icalcomponent_add_property(vtodo,
 727                         icalproperty_new_sequence(sequence)
 728                 );
 729
 730                 /**
 731                  * Encapsulate event into full VCALENDAR component.  Clone it first,
 732                  * for two reasons: one, it's easier to just free the whole thing
 733                  * when we're done instead of unbundling, but more importantly, we
 734                  * can't encapsulate something that may already be encapsulated
 735                  * somewhere else.
 736                  */
 737                 lprintf(9, "Encapsulating into full VCALENDAR component\n");
 738                 encaps = ical_encapsulate_subcomponent(icalcomponent_new_clone(vtodo));
 739
 740                 /* Serialize it and save it to the message base */
 741                 serv_puts("ENT0 1|||4");
 742                 serv_getln(buf, sizeof buf);
 743                 if (buf[0] == '4') {
 744                         serv_puts("Content-type: text/calendar");
 745                         serv_puts("");
 746                         serv_puts(icalcomponent_as_ical_string(encaps));
 747                         serv_puts("000");
 748
 749                         /**
 750                          * Probably not necessary; the server will see the UID
 751                          * of the object and delete the old one anyway, but
 752                          * just in case...
 753                          */
 754                         delete_existing = 1;
 755                 }
 756                 icalcomponent_free(encaps);
 757         }
 758
 759         /**
 760          * If the user clicked 'Delete' then explicitly delete the message.
 761          */
 762         if (strlen(bstr("delete_button")) > 0) {
 763                 delete_existing = 1;
 764         }
 765
 766         if ( (delete_existing) && (msgnum > 0L) ) {
 767                 serv_printf("DELE %ld", atol(bstr("msgnum")));
 768                 serv_getln(buf, sizeof buf);
 769         }
 770
 771         if (created_new_vtodo) {
 772                 icalcomponent_free(vtodo);
 773         }
 774
 775         /** Go back to the task list */
 776         readloop("readfwd");
 777 }
 778
 779
 780
 781 /**
 782  * \brief generic item handler
 783  * Code common to all display handlers.  Given a message number and a MIME
 784  * type, we load the message and hunt for that MIME type.  If found, we load
 785  * the relevant part, deserialize it into a libical component, filter it for
 786  * the requested object type, and feed it to the specified handler.
 787  * \param mimetype mimetyp of our object
 788  * \param which_kind sort of ical type
 789  * \param msgnum number of the mesage in our db
 790  * \param callback a funcion \todo
 791  *
 792  */
 793 void display_using_handler(long msgnum,
 794                         char *mimetype,
 795                         icalcomponent_kind which_kind,
 796                         void (*callback)(icalcomponent *, long)
 797         ) {
 798         char buf[SIZ];
 799         char mime_partnum[SIZ];
 800         char mime_filename[SIZ];
 801         char mime_content_type[SIZ];
 802         char mime_disposition[SIZ];
 803         int mime_length;
 804         char relevant_partnum[SIZ];
 805         char *relevant_source = NULL;
 806         icalcomponent *cal, *c;
 807
 808         sprintf(buf, "MSG0 %ld|1", msgnum);     /* ask for headers only */
 809         serv_puts(buf);
 810         serv_getln(buf, sizeof buf);
 811         if (buf[0] != '1') return;
 812
 813         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 814                 if (!strncasecmp(buf, "part=", 5)) {
 815                         extract_token(mime_filename, &buf[5], 1, '|', sizeof mime_filename);
 816                         extract_token(mime_partnum, &buf[5], 2, '|', sizeof mime_partnum);
 817                         extract_token(mime_disposition, &buf[5], 3, '|', sizeof mime_disposition);
 818                         extract_token(mime_content_type, &buf[5], 4, '|', sizeof mime_content_type);
 819                         mime_length = extract_int(&buf[5], 5);
 820
 821                         if (!strcasecmp(mime_content_type, "text/calendar")) {
 822                                 strcpy(relevant_partnum, mime_partnum);
 823                         }
 824
 825                 }
 826         }
 827
 828         if (strlen(relevant_partnum) > 0) {
 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);
 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);
 849                                 }
 850                                 icalcomponent_free(cal);
 851                         }
 852                         free(relevant_source);
 853                 }
 854         }
 855
 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) {
 863         display_using_handler(msgnum, "text/calendar",
 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) {
 873         display_using_handler(msgnum, "text/calendar",
 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 (strlen(bstr("taskrm")) > 0) {
 886                 gotoroom(bstr("taskrm"));
 887         }
 888
 889         msgnum = atol(bstr("msgnum"));
 890         if (msgnum > 0L) {
 891                 /** existing task */
 892                 display_using_handler(msgnum, "text/calendar",
 893                                 ICAL_VTODO_COMPONENT,
 894                                 display_edit_individual_task);
 895         }
 896         else {
 897                 /** new task */
 898                 display_edit_individual_task(NULL, 0L);
 899         }
 900 }
 901
 902 /**
 903  *\brief save an edited task
 904  */
 905 void save_task(void) {
 906         long msgnum = 0L;
 907
 908         msgnum = atol(bstr("msgnum"));
 909         if (msgnum > 0L) {
 910                 display_using_handler(msgnum, "text/calendar",
 911                                 ICAL_VTODO_COMPONENT,
 912                                 save_individual_task);
 913         }
 914         else {
 915                 save_individual_task(NULL, 0L);
 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 = atol(bstr("msgnum"));
 926         if (msgnum > 0L) {
 927                 /* existing event */
 928                 display_using_handler(msgnum, "text/calendar",
 929                                 ICAL_VEVENT_COMPONENT,
 930                                 display_edit_individual_event);
 931         }
 932         else {
 933                 /* new event */
 934                 display_edit_individual_event(NULL, 0L);
 935         }
 936 }
 937
 938 /**
 939  * \brief save an edited event
 940  */
 941 void save_event(void) {
 942         long msgnum = 0L;
 943
 944         msgnum = atol(bstr("msgnum"));
 945
 946         if (msgnum > 0L) {
 947                 display_using_handler(msgnum, "text/calendar",
 948                                 ICAL_VEVENT_COMPONENT,
 949                                 save_individual_event);
 950         }
 951         else {
 952                 save_individual_event(NULL, 0L);
 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
 969         extract_token(who, req, 1, ' ', sizeof who);
 970         if (!strncasecmp(who, "/freebusy/", 10)) {
 971                 strcpy(who, &who[10]);
 972         }
 973         unescape_input(who);
 974
 975         if ( (!strcasecmp(&who[strlen(who)-4], ".vcf"))
 976            || (!strcasecmp(&who[strlen(who)-4], ".ifb"))
 977            || (!strcasecmp(&who[strlen(who)-4], ".vfb")) ) {
 978                 who[strlen(who)-4] = 0;
 979         }
 980
 981         lprintf(9, "freebusy requested for <%s>\n", who);
 982         serv_printf("ICAL freebusy|%s", who);
 983         serv_getln(buf, sizeof buf);
 984
 985         if (buf[0] != '1') {
 986                 wprintf("HTTP/1.1 404 %s\n", &buf[4]);
 987                 output_headers(0, 0, 0, 0, 0, 0);
 988                 wprintf("Content-Type: text/plain\r\n");
 989                 wprintf("\r\n");
 990                 wprintf("%s\n", &buf[4]);
 991                 return;
 992         }
 993
 994         fb = read_server_text();
 995         http_transmit_thing(fb, strlen(fb), "text/calendar", 0);
 996         free(fb);
 997 }
 998
 999
1000
1001 #endif /* WEBCIT_WITH_CALENDAR_SERVICE */
1002
1003
1004 /*@}*/