Imported Upstream version 2.3_rc1

1 files changed, 0 insertions, 114 deletions

diff --git a/mss.c b/mss.c
deleted file mode 100644
index 660b62c..0000000
--- a/mss.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- *  OpenVPN -- An application to securely tunnel IP networks
- *             over a single TCP/UDP port, with support for SSL/TLS-based
- *             session authentication and key exchange,
- *             packet encryption, packet authentication, and
- *             packet compression.
- *
- *  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2
- *  as published by the Free Software Foundation.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program (see the file COPYING included with this
- *  distribution); if not, write to the Free Software Foundation, Inc.,
- *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include "syshead.h"
-#include "error.h"
-#include "mss.h"
-#include "memdbg.h"
-
-/*
- * Lower MSS on TCP SYN packets to fix MTU
- * problems which arise from protocol
- * encapsulation.
- */
-void
-mss_fixup (struct buffer *buf, int maxmss)
-{
-  const struct openvpn_iphdr *pip;
-  int hlen;
-
-  if (BLEN (buf) < (int) sizeof (struct openvpn_iphdr))
-    return;
-  
-  verify_align_4 (buf);
-  pip = (struct openvpn_iphdr *) BPTR (buf);
-
-  hlen = OPENVPN_IPH_GET_LEN (pip->version_len);
-
-  if (pip->protocol == OPENVPN_IPPROTO_TCP
-      && ntohs (pip->tot_len) == BLEN (buf)
-      && (ntohs (pip->frag_off) & OPENVPN_IP_OFFMASK) == 0
-      && hlen <= BLEN (buf)
-      && BLEN (buf) - hlen
-         >= (int) sizeof (struct openvpn_tcphdr))
-    {
-      struct buffer newbuf = *buf;
-      if (buf_advance (&newbuf, hlen))
-	{
-	  struct openvpn_tcphdr *tc = (struct openvpn_tcphdr *) BPTR (&newbuf);
-	  if (tc->flags & OPENVPN_TCPH_SYN_MASK)
-	    mss_fixup_dowork (&newbuf, (uint16_t) maxmss);
-	}
-    }
-}
-
-void
-mss_fixup_dowork (struct buffer *buf, uint16_t maxmss)
-{
-  int hlen, olen, optlen;
-  uint8_t *opt;
-  uint16_t *mss;
-  int accumulate;
-  struct openvpn_tcphdr *tc;
-
-  ASSERT (BLEN (buf) >= (int) sizeof (struct openvpn_tcphdr));
-
-  verify_align_4 (buf);
-  tc = (struct openvpn_tcphdr *) BPTR (buf);
-  hlen = OPENVPN_TCPH_GET_DOFF (tc->doff_res);
-
-  /* Invalid header length or header without options. */
-  if (hlen <= (int) sizeof (struct openvpn_tcphdr)
-      || hlen > BLEN (buf))
-    return;
-
-  for (olen = hlen - sizeof (struct openvpn_tcphdr),
-	 opt = (uint8_t *)(tc + 1);
-       olen > 0;
-       olen -= optlen, opt += optlen) {
-    if (*opt == OPENVPN_TCPOPT_EOL)
-      break;
-    else if (*opt == OPENVPN_TCPOPT_NOP)
-      optlen = 1;
-    else {
-      optlen = *(opt + 1);
-      if (optlen <= 0 || optlen > olen)
-        break;
-      if (*opt == OPENVPN_TCPOPT_MAXSEG) {
-        if (optlen != OPENVPN_TCPOLEN_MAXSEG)
-          continue;
-        mss = (uint16_t *)(opt + 2);
-        if (ntohs (*mss) > maxmss) {
-          dmsg (D_MSS, "MSS: %d -> %d",
-               (int) ntohs (*mss),
-	       (int) maxmss);
-          accumulate = *mss;
-          *mss = htons (maxmss);
-          accumulate -= *mss;
-          ADJUST_CHECKSUM (accumulate, tc->check);
-        }
-      }
-    }
-  }
-}