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
  24         /* Now extract the message euid */
  25         n = StrBufNum_tokens(WCC->Hdr->HR.ReqLine, '/');
  26         extract_token(dav_uid, ChrPtr(WCC->Hdr->HR.ReqLine), n-1, '/', sizeof dav_uid);
  27         StrBufRemove_token(WCC->Hdr->HR.ReqLine, n-1, '/');
  28
  29         /* What's left is the room name.  Remove trailing slashes. */
  30         //len = StrLength(WCC->Hdr->HR.ReqLine);
  31         //if ((len > 0) && (ChrPtr(WCC->Hdr->HR.ReqLinee)[len-1] == '/')) {
  32         //      StrBufCutRight(WCC->Hdr->HR.ReqLine, 1);
  33         //}
  34         StrBufCutLeft(WCC->Hdr->HR.ReqLine, 1);
  35
  36         /* Go to the correct room. */
  37         if (strcasecmp(ChrPtr(WC->wc_roomname), ChrPtr(WCC->Hdr->HR.ReqLine))) {
  38                 gotoroom(WCC->Hdr->HR.ReqLine);
  39         }
  40         if (strcasecmp(ChrPtr(WC->wc_roomname), ChrPtr(WCC->Hdr->HR.ReqLine))) {
  41                 hprintf("HTTP/1.1 404 not found\r\n");
  42                 groupdav_common_headers();
  43                 hprintf("Content-Length: 0\r\n\r\n");
  44                 return;
  45         }
  46
  47         dav_msgnum = locate_message_by_uid(dav_uid);
  48
  49         /*
  50          * If no item exists with the requested uid ... simple error.
  51          */
  52         if (dav_msgnum < 0L) {
  53                 hprintf("HTTP/1.1 404 Not Found\r\n");
  54                 groupdav_common_headers();
  55                 hprintf("Content-Length: 0\r\n\r\n");
  56                 return;
  57         }
  58
  59         /*
  60          * It's there ... check the ETag and make sure it matches
  61          * the message number.
  62          */
  63         if (StrLength(WCC->Hdr->HR.dav_ifmatch) > 0) {
  64                 if (StrTol(WCC->Hdr->HR.dav_ifmatch) != dav_msgnum) {
  65                         hprintf("HTTP/1.1 412 Precondition Failed\r\n");
  66                         groupdav_common_headers();
  67                         hprintf("Content-Length: 0\r\n\r\n");
  68                         return;
  69                 }
  70         }
  71
  72         /*
  73          * Ok, attempt to delete the item.
  74          */
  75         serv_printf("DELE %ld", dav_msgnum);
  76         serv_getln(buf, sizeof buf);
  77         if (buf[0] == '2') {
  78                 hprintf("HTTP/1.1 204 No Content\r\n"); /* success */
  79                 groupdav_common_headers();
  80                 hprintf("Content-Length: 0\r\n\r\n");
  81         }
  82         else {
  83                 hprintf("HTTP/1.1 403 Forbidden\r\n");  /* access denied */
  84                 groupdav_common_headers();
  85                 hprintf("Content-Length: 0\r\n\r\n");
  86         }
  87         return;
  88 }