Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 176 insertions, 0 deletions

diff --git a/net/sunrpc/auth_gss/gss_krb5_seal.c b/net/sunrpc/auth_gss/gss_krb5_seal.c
new file mode 100644
index 00000000000..afeeb8715a7
--- /dev/null
+++ b/net/sunrpc/auth_gss/gss_krb5_seal.c
@@ -0,0 +1,176 @@
+/*
+ *  linux/net/sunrpc/gss_krb5_seal.c
+ *
+ *  Adapted from MIT Kerberos 5-1.2.1 lib/gssapi/krb5/k5seal.c
+ *
+ *  Copyright (c) 2000 The Regents of the University of Michigan.
+ *  All rights reserved.
+ *
+ *  Andy Adamson	<andros@umich.edu>
+ *  J. Bruce Fields	<bfields@umich.edu>
+ */
+
+/*
+ * Copyright 1993 by OpenVision Technologies, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appears in all copies and
+ * that both that copyright notice and this permission notice appear in
+ * supporting documentation, and that the name of OpenVision not be used
+ * in advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission. OpenVision makes no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ * OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+ * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * Copyright (C) 1998 by the FundsXpress, INC.
+ *
+ * All rights reserved.
+ *
+ * Export of this software from the United States of America may require
+ * a specific license from the United States Government.  It is the
+ * responsibility of any person or organization contemplating export to
+ * obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of FundsXpress. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  FundsXpress makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/sunrpc/gss_krb5.h>
+#include <linux/random.h>
+#include <asm/scatterlist.h>
+#include <linux/crypto.h>
+
+#ifdef RPC_DEBUG
+# define RPCDBG_FACILITY        RPCDBG_AUTH
+#endif
+
+static inline int
+gss_krb5_padding(int blocksize, int length) {
+	/* Most of the code is block-size independent but in practice we
+	 * use only 8: */
+	BUG_ON(blocksize != 8);
+	return 8 - (length & 7);
+}
+
+u32
+krb5_make_token(struct krb5_ctx *ctx, int qop_req,
+		   struct xdr_buf *text, struct xdr_netobj *token,
+		   int toktype)
+{
+	s32			checksum_type;
+	struct xdr_netobj	md5cksum = {.len = 0, .data = NULL};
+	int			blocksize = 0, tmsglen;
+	unsigned char		*ptr, *krb5_hdr, *msg_start;
+	s32			now;
+
+	dprintk("RPC:     gss_krb5_seal\n");
+
+	now = get_seconds();
+
+	if (qop_req != 0)
+		goto out_err;
+
+	switch (ctx->signalg) {
+		case SGN_ALG_DES_MAC_MD5:
+			checksum_type = CKSUMTYPE_RSA_MD5;
+			break;
+		default:
+			dprintk("RPC:      gss_krb5_seal: ctx->signalg %d not"
+				" supported\n", ctx->signalg);
+			goto out_err;
+	}
+	if (ctx->sealalg != SEAL_ALG_NONE && ctx->sealalg != SEAL_ALG_DES) {
+		dprintk("RPC:      gss_krb5_seal: ctx->sealalg %d not supported\n",
+			ctx->sealalg);
+		goto out_err;
+	}
+
+	if (toktype == KG_TOK_WRAP_MSG) {
+		blocksize = crypto_tfm_alg_blocksize(ctx->enc);
+		tmsglen = blocksize + text->len
+			+ gss_krb5_padding(blocksize, blocksize + text->len);
+	} else {
+		tmsglen = 0;
+	}
+
+	token->len = g_token_size(&ctx->mech_used, 22 + tmsglen);
+
+	ptr = token->data;
+	g_make_token_header(&ctx->mech_used, 22 + tmsglen, &ptr);
+
+	*ptr++ = (unsigned char) ((toktype>>8)&0xff);
+	*ptr++ = (unsigned char) (toktype&0xff);
+
+	/* ptr now at byte 2 of header described in rfc 1964, section 1.2.1: */
+	krb5_hdr = ptr - 2;
+	msg_start = krb5_hdr + 24;
+
+	*(u16 *)(krb5_hdr + 2) = htons(ctx->signalg);
+	memset(krb5_hdr + 4, 0xff, 4);
+	if (toktype == KG_TOK_WRAP_MSG)
+		*(u16 *)(krb5_hdr + 4) = htons(ctx->sealalg);
+
+	if (toktype == KG_TOK_WRAP_MSG) {
+		/* XXX removing support for now */
+		goto out_err;
+	} else { /* Sign only.  */
+		if (make_checksum(checksum_type, krb5_hdr, 8, text,
+				       &md5cksum))
+			goto out_err;
+	}
+
+	switch (ctx->signalg) {
+	case SGN_ALG_DES_MAC_MD5:
+		if (krb5_encrypt(ctx->seq, NULL, md5cksum.data,
+				  md5cksum.data, md5cksum.len))
+			goto out_err;
+		memcpy(krb5_hdr + 16,
+		       md5cksum.data + md5cksum.len - KRB5_CKSUM_LENGTH,
+		       KRB5_CKSUM_LENGTH);
+
+		dprintk("RPC:      make_seal_token: cksum data: \n");
+		print_hexl((u32 *) (krb5_hdr + 16), KRB5_CKSUM_LENGTH, 0);
+		break;
+	default:
+		BUG();
+	}
+
+	kfree(md5cksum.data);
+
+	if ((krb5_make_seq_num(ctx->seq, ctx->initiate ? 0 : 0xff,
+			       ctx->seq_send, krb5_hdr + 16, krb5_hdr + 8)))
+		goto out_err;
+
+	ctx->seq_send++;
+
+	return ((ctx->endtime < now) ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE);
+out_err:
+	if (md5cksum.data) kfree(md5cksum.data);
+	return GSS_S_FAILURE;
+}