webcit/groupdav_delete.c

   1 /*
   2  * $Id$
   3  *
   4  * Handles GroupDAV DELETE requests.
   5  *
   6  * Copyright (c) 2005-2010 by the citadel.org team
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #include "webcit.h"
  24 #include "webserver.h"
  25 #include "groupdav.h"
  26
  27
  28 /*
  29  * The pathname is always going to be /groupdav/room_name/euid
  30  */
  31 void groupdav_delete(void)
  32 {
  33         wcsession *WCC = WC;
  34         char dav_uid[SIZ];
  35         long dav_msgnum = (-1);
  36         char buf[SIZ];
  37         int n = 0;
  38         StrBuf *dav_roomname = NewStrBuf();
  39
  40         /* Now extract the message euid */
  41         n = StrBufNum_tokens(WCC->Hdr->HR.ReqLine, '/');
  42         extract_token(dav_uid, ChrPtr(WCC->Hdr->HR.ReqLine), n-1, '/', sizeof dav_uid);
  43         StrBufExtract_token(dav_roomname, WCC->Hdr->HR.ReqLine, 0, '/');
  44
  45         ///* What's left is the room name.  Remove trailing slashes. */
  46         //len = StrLength(WCC->Hdr->HR.ReqLine);
  47         //if ((len > 0) && (ChrPtr(WCC->Hdr->HR.ReqLinee)[len-1] == '/')) {
  48         //      StrBufCutRight(WCC->Hdr->HR.ReqLine, 1);
  49         //}
  50         //StrBufCutLeft(WCC->Hdr->HR.ReqLine, 1);
  51
  52         /* Go to the correct room. */
  53         if (strcasecmp(ChrPtr(WC->CurRoom.name), ChrPtr(dav_roomname))) {
  54                 gotoroom(dav_roomname);
  55         }
  56         if (strcasecmp(ChrPtr(WC->CurRoom.name), ChrPtr(dav_roomname))) {
  57                 hprintf("HTTP/1.1 404 not found\r\n");
  58                 groupdav_common_headers();
  59                 hprintf("Content-Length: 0\r\n\r\n");
  60                 begin_burst();
  61                 end_burst();
  62                 FreeStrBuf(&dav_roomname);
  63                 return;
  64         }
  65
  66         dav_msgnum = locate_message_by_uid(dav_uid);
  67
  68         /*
  69          * If no item exists with the requested uid ... simple error.
  70          */
  71         if (dav_msgnum < 0L) {
  72                 hprintf("HTTP/1.1 404 Not Found\r\n");
  73                 groupdav_common_headers();
  74                 hprintf("Content-Length: 0\r\n\r\n");
  75                 begin_burst();
  76                 end_burst();
  77                 FreeStrBuf(&dav_roomname);
  78                 return;
  79         }
  80
  81         /*
  82          * It's there ... check the ETag and make sure it matches
  83          * the message number.
  84          */
  85         if (StrLength(WCC->Hdr->HR.dav_ifmatch) > 0) {
  86                 if (StrTol(WCC->Hdr->HR.dav_ifmatch) != dav_msgnum) {
  87                         hprintf("HTTP/1.1 412 Precondition Failed\r\n");
  88                         groupdav_common_headers();
  89                         hprintf("Content-Length: 0\r\n\r\n");
  90                         begin_burst();
  91                         end_burst();
  92                         FreeStrBuf(&dav_roomname);
  93                         return;
  94                 }
  95         }
  96
  97         /*
  98          * Ok, attempt to delete the item.
  99          */
 100         serv_printf("DELE %ld", dav_msgnum);
 101         serv_getln(buf, sizeof buf);
 102         if (buf[0] == '2') {
 103                 hprintf("HTTP/1.1 204 No Content\r\n"); /* success */
 104                 groupdav_common_headers();
 105                 hprintf("Content-Length: 0\r\n\r\n");
 106                 begin_burst();
 107                 end_burst();
 108         }
 109         else {
 110                 hprintf("HTTP/1.1 403 Forbidden\r\n");  /* access denied */
 111                 groupdav_common_headers();
 112                 hprintf("Content-Length: 0\r\n\r\n");
 113                 begin_burst();
 114                 end_burst();
 115         }
 116         FreeStrBuf(&dav_roomname);
 117         return;
 118 }