A netgraph node that implements Microsoft Point-to-Point compression

(MPPC) and Microsoft Point-to-Point encryption (MPPE) protocols.

Note: the MPPC part is disabled as it requires proprietary files.

Obtained from:	Whistle source tree

1 files changed, 83 insertions, 0 deletions

diff --git a/sys/netgraph/ng_mppc.h b/sys/netgraph/ng_mppc.h
new file mode 100644
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+++ b/sys/netgraph/ng_mppc.h
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+
+/*
+ * ng_mppc.h
+ *
+ * Copyright (c) 1996-2000 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * Author: Archie Cobbs <archie@whistle.com>
+ *
+ * $Whistle: ng_mppc.h,v 1.3 2000/02/12 01:17:22 archie Exp $
+ * $FreeBSD$
+ */
+
+#ifndef _NETGRAPH_MPPC_H_
+#define _NETGRAPH_MPPC_H_
+
+/* Node type name and magic cookie */
+#define NG_MPPC_NODE_TYPE	"mppc"
+#define NGM_MPPC_COOKIE		942886745
+
+/* Hook names */
+#define NG_MPPC_HOOK_COMP	"comp"		/* compression hook */
+#define NG_MPPC_HOOK_DECOMP	"decomp"	/* decompression hook */
+
+/* Length of MPPE key */
+#define MPPE_KEY_LEN		16
+
+/* Max expansion due to MPPC header and compression algorithm */
+#define MPPC_MAX_BLOWUP(n)	((n) * 9 / 8 + 26)
+
+/* MPPC/MPPE PPP negotiation bits */
+#define MPPC_BIT		0x00000001	/* mppc compression bits */
+#define MPPE_40			0x00000020	/* use 40 bit key */
+#define MPPE_128		0x00000040	/* use 128 bit key */
+#define MPPE_BITS		0x00000060	/* mppe encryption bits */
+#define MPPE_STATELESS		0x01000000	/* use stateless mode */
+#define MPPC_VALID_BITS		0x01000061	/* possibly valid bits */
+
+/* Config struct (per-direction) */
+struct ng_mppc_config {
+	u_char		enable;			/* enable */
+	u_int32_t	bits;			/* config bits */
+	u_char		startkey[MPPE_KEY_LEN];	/* start key */
+};
+
+/* Netgraph commands */
+enum {
+	NGM_MPPC_CONFIG_COMP = 1,
+	NGM_MPPC_CONFIG_DECOMP,
+	NGM_MPPC_RESETREQ,			/* sent either way! */
+};
+
+#endif /* _NETGRAPH_MPPC_H_ */
+