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(StrBuf *dav_pathname, char *dav_ifmatch) {
  17         char dav_uid[SIZ];
  18         long dav_msgnum = (-1);
  19         char buf[SIZ];
  20         int n = 0;
  21
  22         /* First, break off the "/groupdav/" prefix */
  23         StrBufCutLeft(dav_pathname, 9);
  24
  25         /* Now extract the message euid */
  26         n = StrBufNum_tokens(dav_pathname, '/');
  27         extract_token(dav_uid, ChrPtr(dav_pathname), n-1, '/', sizeof dav_uid);
  28         StrBufRemove_token(dav_pathname, n-1, '/');
  29
  30         /* What's left is the room name.  Remove trailing slashes. */
  31         //len = StrLength(dav_pathname);
  32         //if ((len > 0) && (ChrPtr(dav_pathname)[len-1] == '/')) {
  33         //      StrBufCutRight(dav_pathname, 1);
  34         //}
  35         StrBufCutLeft(dav_pathname, 1);
  36
  37         /* Go to the correct room. */
  38         if (strcasecmp(ChrPtr(WC->wc_roomname), ChrPtr(dav_pathname))) {
  39                 gotoroom(dav_pathname);
  40         }
  41         if (strcasecmp(ChrPtr(WC->wc_roomname), ChrPtr(dav_pathname))) {
  42                 hprintf("HTTP/1.1 404 not found\r\n");
  43                 groupdav_common_headers();
  44                 hprintf("Content-Length: 0\r\n\r\n");
  45                 return;
  46         }
  47
  48         dav_msgnum = locate_message_by_uid(dav_uid);
  49
  50         /*
  51          * If no item exists with the requested uid ... simple error.
  52          */
  53         if (dav_msgnum < 0L) {
  54                 hprintf("HTTP/1.1 404 Not Found\r\n");
  55                 groupdav_common_headers();
  56                 hprintf("Content-Length: 0\r\n\r\n");
  57                 return;
  58         }
  59
  60         /*
  61          * It's there ... check the ETag and make sure it matches
  62          * the message number.
  63          */
  64         if (!IsEmptyStr(dav_ifmatch)) {
  65                 if (atol(dav_ifmatch) != dav_msgnum) {
  66                         hprintf("HTTP/1.1 412 Precondition Failed\r\n");
  67                         groupdav_common_headers();
  68                         hprintf("Content-Length: 0\r\n\r\n");
  69                         return;
  70                 }
  71         }
  72
  73         /*
  74          * Ok, attempt to delete the item.
  75          */
  76         serv_printf("DELE %ld", dav_msgnum);
  77         serv_getln(buf, sizeof buf);
  78         if (buf[0] == '2') {
  79                 hprintf("HTTP/1.1 204 No Content\r\n"); /* success */
  80                 groupdav_common_headers();
  81                 hprintf("Content-Length: 0\r\n\r\n");
  82         }
  83         else {
  84                 hprintf("HTTP/1.1 403 Forbidden\r\n");  /* access denied */
  85                 groupdav_common_headers();
  86                 hprintf("Content-Length: 0\r\n\r\n");
  87         }
  88         return;
  89 }