webcit/groupdav_delete.c

   1 /*
   2  * $Id$
   3  *
   4  * Handles GroupDAV DELETE requests.
   5  *
   6  */
   7
   8 #include "webcit.h"
   9 #include "webserver.h"
  10 #include "groupdav.h"
  11
  12
  13 /*
  14  * The pathname is always going to be /groupdav/room_name/euid
  15  */
  16 void groupdav_delete(void)
  17 {
  18         wcsession *WCC = WC;
  19         char dav_uid[SIZ];
  20         long dav_msgnum = (-1);
  21         char buf[SIZ];
  22         int n = 0;
  23         StrBuf *dav_roomname = NewStrBuf();
  24
  25         /* Now extract the message euid */
  26         n = StrBufNum_tokens(WCC->Hdr->HR.ReqLine, '/');
  27         extract_token(dav_uid, ChrPtr(WCC->Hdr->HR.ReqLine), n-1, '/', sizeof dav_uid);
  28         StrBufExtract_token(dav_roomname, WCC->Hdr->HR.ReqLine, 0, '/');
  29
  30         ///* What's left is the room name.  Remove trailing slashes. */
  31         //len = StrLength(WCC->Hdr->HR.ReqLine);
  32         //if ((len > 0) && (ChrPtr(WCC->Hdr->HR.ReqLinee)[len-1] == '/')) {
  33         //      StrBufCutRight(WCC->Hdr->HR.ReqLine, 1);
  34         //}
  35         //StrBufCutLeft(WCC->Hdr->HR.ReqLine, 1);
  36
  37         /* Go to the correct room. */
  38         if (strcasecmp(ChrPtr(WC->CurRoom.name), ChrPtr(dav_roomname))) {
  39                 gotoroom(dav_roomname);
  40         }
  41         if (strcasecmp(ChrPtr(WC->CurRoom.name), ChrPtr(dav_roomname))) {
  42                 hprintf("HTTP/1.1 404 not found\r\n");
  43                 groupdav_common_headers();
  44                 hprintf("Content-Length: 0\r\n\r\n");
  45                 begin_burst();
  46                 end_burst();
  47                 FreeStrBuf(&dav_roomname);
  48                 return;
  49         }
  50
  51         dav_msgnum = locate_message_by_uid(dav_uid);
  52
  53         /*
  54          * If no item exists with the requested uid ... simple error.
  55          */
  56         if (dav_msgnum < 0L) {
  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         /*
  67          * It's there ... check the ETag and make sure it matches
  68          * the message number.
  69          */
  70         if (StrLength(WCC->Hdr->HR.dav_ifmatch) > 0) {
  71                 if (StrTol(WCC->Hdr->HR.dav_ifmatch) != dav_msgnum) {
  72                         hprintf("HTTP/1.1 412 Precondition Failed\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         /*
  83          * Ok, attempt to delete the item.
  84          */
  85         serv_printf("DELE %ld", dav_msgnum);
  86         serv_getln(buf, sizeof buf);
  87         if (buf[0] == '2') {
  88                 hprintf("HTTP/1.1 204 No Content\r\n"); /* success */
  89                 groupdav_common_headers();
  90                 hprintf("Content-Length: 0\r\n\r\n");
  91                 begin_burst();
  92                 end_burst();
  93         }
  94         else {
  95                 hprintf("HTTP/1.1 403 Forbidden\r\n");  /* access denied */
  96                 groupdav_common_headers();
  97                 hprintf("Content-Length: 0\r\n\r\n");
  98                 begin_burst();
  99                 end_burst();
 100         }
 101         FreeStrBuf(&dav_roomname);
 102         return;
 103 }