webcit/dav_options.c

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