webcit/groupdav_options.c

   1 /*
   2  * $Id$
   3  *
   4  * Handles DAV OPTIONS requests (experimental -- not required by GroupDAV)
   5  *
   6  *
   7  * Copyright (c) 2005-2010 by the citadel.org team
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 3 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #include "webcit.h"
  25 #include "webserver.h"
  26 #include "groupdav.h"
  27
  28 /*
  29  * The pathname is always going to be /groupdav/room_name/msg_num
  30  */
  31 void groupdav_options(void)
  32 {
  33         wcsession *WCC = WC;
  34         StrBuf *dav_roomname;
  35         StrBuf *dav_uid;
  36         long dav_msgnum = (-1);
  37         char datestring[256];
  38         time_t now;
  39
  40         now = time(NULL);
  41         http_datestring(datestring, sizeof datestring, now);
  42
  43         dav_roomname = NewStrBuf();
  44         dav_uid = NewStrBuf();
  45         StrBufExtract_token(dav_roomname, WCC->Hdr->HR.ReqLine, 0, '/');
  46         StrBufExtract_token(dav_uid, WCC->Hdr->HR.ReqLine, 1, '/');
  47
  48         /*
  49          * If the room name is blank, the client is doing a top-level OPTIONS.
  50          */
  51         if (StrLength(dav_roomname) == 0) {
  52                 hprintf("HTTP/1.1 200 OK\r\n");
  53                 groupdav_common_headers();
  54                 hprintf("Date: %s\r\n", datestring);
  55                 hprintf("DAV: 1\r\n");
  56                 hprintf("Allow: OPTIONS, PROPFIND\r\n");
  57                 hprintf("\r\n");
  58                 begin_burst();
  59                 end_burst();
  60                 FreeStrBuf(&dav_roomname);
  61                 FreeStrBuf(&dav_uid);
  62                 return;
  63         }
  64
  65         /* Go to the correct room. */
  66         if (strcasecmp(ChrPtr(WC->CurRoom.name), ChrPtr(dav_roomname))) {
  67                 gotoroom(dav_roomname);
  68         }
  69
  70         if (strcasecmp(ChrPtr(WC->CurRoom.name), ChrPtr(dav_roomname))) {
  71                 hprintf("HTTP/1.1 404 not found\r\n");
  72                 groupdav_common_headers();
  73                 hprintf("Date: %s\r\n", datestring);
  74                 hprintf(
  75                         "Content-Type: text/plain\r\n");
  76                 begin_burst();
  77                 wc_printf(
  78                         "There is no folder called \"%s\" on this server.\r\n",
  79                         ChrPtr(dav_roomname)
  80                 );
  81                 end_burst();
  82                 FreeStrBuf(&dav_roomname);
  83                 FreeStrBuf(&dav_uid);
  84                 return;
  85         }
  86
  87         /* If dav_uid is non-empty, client is requesting an OPTIONS on
  88          * a specific item in the room.
  89          */
  90         if (StrLength(dav_uid) != 0) {
  91
  92                 dav_msgnum = locate_message_by_uid(ChrPtr(dav_uid));
  93                 if (dav_msgnum < 0) {
  94                         hprintf("HTTP/1.1 404 not found\r\n");
  95                         groupdav_common_headers();
  96                         hprintf("Content-Type: text/plain\r\n");
  97                         begin_burst();
  98                         wc_printf(
  99                                 "Object \"%s\" was not found in the \"%s\" folder.\r\n",
 100                                 ChrPtr(dav_uid),
 101                                 ChrPtr(dav_roomname)
 102                         );
 103                         FreeStrBuf(&dav_roomname);
 104                         FreeStrBuf(&dav_uid);
 105                         end_burst();return;
 106                 }
 107
 108                 hprintf("HTTP/1.1 200 OK\r\n");
 109                 groupdav_common_headers();
 110                 hprintf("Date: %s\r\n", datestring);
 111                 hprintf("DAV: 1\r\n");
 112                 hprintf("Allow: OPTIONS, PROPFIND, GET, PUT, DELETE\r\n");
 113
 114                 begin_burst();
 115                 end_burst();
 116                 FreeStrBuf(&dav_roomname);
 117                 FreeStrBuf(&dav_uid);
 118                 return;
 119         }
 120
 121         FreeStrBuf(&dav_roomname);
 122         FreeStrBuf(&dav_uid);
 123
 124         /*
 125          * We got to this point, which means that the client is requesting
 126          * an OPTIONS on the room itself.
 127          */
 128         hprintf("HTTP/1.1 200 OK\r\n");
 129         groupdav_common_headers();
 130         hprintf("Date: %s\r\n", datestring);
 131         hprintf("DAV: 1\r\n");
 132         hprintf("Allow: OPTIONS, PROPFIND, GET, PUT\r\n");
 133         begin_burst();
 134         wc_printf("\r\n");
 135         end_burst();
 136 }