![Trond Myklebust](/assets/img/avatar_default.png)
net/sunrpc/svcsock.c:412:22: warning: incorrect type in assignment (different address spaces) - svc_partial_recvfrom now takes a struct kvec, so the variable save_iovbase needs to be an ordinary (void *) Make a bunch of variables in net/sunrpc/xprtsock.c static Fix a couple of "warning: symbol 'foo' was not declared. Should it be static?" reports. Fix a couple of conflicting function declarations. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
224 lines
6.5 KiB
C
224 lines
6.5 KiB
C
/*
|
|
* linux/net/sunrpc/gss_krb5_seal.c
|
|
*
|
|
* Adapted from MIT Kerberos 5-1.2.1 lib/gssapi/krb5/k5seal.c
|
|
*
|
|
* Copyright (c) 2000-2008 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/jiffies.h>
|
|
#include <linux/sunrpc/gss_krb5.h>
|
|
#include <linux/random.h>
|
|
#include <linux/crypto.h>
|
|
|
|
#ifdef RPC_DEBUG
|
|
# define RPCDBG_FACILITY RPCDBG_AUTH
|
|
#endif
|
|
|
|
DEFINE_SPINLOCK(krb5_seq_lock);
|
|
|
|
static char *
|
|
setup_token(struct krb5_ctx *ctx, struct xdr_netobj *token)
|
|
{
|
|
__be16 *ptr, *krb5_hdr;
|
|
int body_size = GSS_KRB5_TOK_HDR_LEN + ctx->gk5e->cksumlength;
|
|
|
|
token->len = g_token_size(&ctx->mech_used, body_size);
|
|
|
|
ptr = (__be16 *)token->data;
|
|
g_make_token_header(&ctx->mech_used, body_size, (unsigned char **)&ptr);
|
|
|
|
/* ptr now at start of header described in rfc 1964, section 1.2.1: */
|
|
krb5_hdr = ptr;
|
|
*ptr++ = KG_TOK_MIC_MSG;
|
|
*ptr++ = cpu_to_le16(ctx->gk5e->signalg);
|
|
*ptr++ = SEAL_ALG_NONE;
|
|
*ptr++ = 0xffff;
|
|
|
|
return (char *)krb5_hdr;
|
|
}
|
|
|
|
static void *
|
|
setup_token_v2(struct krb5_ctx *ctx, struct xdr_netobj *token)
|
|
{
|
|
__be16 *ptr, *krb5_hdr;
|
|
u8 *p, flags = 0x00;
|
|
|
|
if ((ctx->flags & KRB5_CTX_FLAG_INITIATOR) == 0)
|
|
flags |= 0x01;
|
|
if (ctx->flags & KRB5_CTX_FLAG_ACCEPTOR_SUBKEY)
|
|
flags |= 0x04;
|
|
|
|
/* Per rfc 4121, sec 4.2.6.1, there is no header,
|
|
* just start the token */
|
|
krb5_hdr = ptr = (__be16 *)token->data;
|
|
|
|
*ptr++ = KG2_TOK_MIC;
|
|
p = (u8 *)ptr;
|
|
*p++ = flags;
|
|
*p++ = 0xff;
|
|
ptr = (__be16 *)p;
|
|
*ptr++ = 0xffff;
|
|
*ptr++ = 0xffff;
|
|
|
|
token->len = GSS_KRB5_TOK_HDR_LEN + ctx->gk5e->cksumlength;
|
|
return krb5_hdr;
|
|
}
|
|
|
|
static u32
|
|
gss_get_mic_v1(struct krb5_ctx *ctx, struct xdr_buf *text,
|
|
struct xdr_netobj *token)
|
|
{
|
|
char cksumdata[GSS_KRB5_MAX_CKSUM_LEN];
|
|
struct xdr_netobj md5cksum = {.len = sizeof(cksumdata),
|
|
.data = cksumdata};
|
|
void *ptr;
|
|
s32 now;
|
|
u32 seq_send;
|
|
u8 *cksumkey;
|
|
|
|
dprintk("RPC: %s\n", __func__);
|
|
BUG_ON(ctx == NULL);
|
|
|
|
now = get_seconds();
|
|
|
|
ptr = setup_token(ctx, token);
|
|
|
|
if (ctx->gk5e->keyed_cksum)
|
|
cksumkey = ctx->cksum;
|
|
else
|
|
cksumkey = NULL;
|
|
|
|
if (make_checksum(ctx, ptr, 8, text, 0, cksumkey,
|
|
KG_USAGE_SIGN, &md5cksum))
|
|
return GSS_S_FAILURE;
|
|
|
|
memcpy(ptr + GSS_KRB5_TOK_HDR_LEN, md5cksum.data, md5cksum.len);
|
|
|
|
spin_lock(&krb5_seq_lock);
|
|
seq_send = ctx->seq_send++;
|
|
spin_unlock(&krb5_seq_lock);
|
|
|
|
if (krb5_make_seq_num(ctx, ctx->seq, ctx->initiate ? 0 : 0xff,
|
|
seq_send, ptr + GSS_KRB5_TOK_HDR_LEN, ptr + 8))
|
|
return GSS_S_FAILURE;
|
|
|
|
return (ctx->endtime < now) ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE;
|
|
}
|
|
|
|
static u32
|
|
gss_get_mic_v2(struct krb5_ctx *ctx, struct xdr_buf *text,
|
|
struct xdr_netobj *token)
|
|
{
|
|
char cksumdata[GSS_KRB5_MAX_CKSUM_LEN];
|
|
struct xdr_netobj cksumobj = { .len = sizeof(cksumdata),
|
|
.data = cksumdata};
|
|
void *krb5_hdr;
|
|
s32 now;
|
|
u64 seq_send;
|
|
u8 *cksumkey;
|
|
unsigned int cksum_usage;
|
|
|
|
dprintk("RPC: %s\n", __func__);
|
|
|
|
krb5_hdr = setup_token_v2(ctx, token);
|
|
|
|
/* Set up the sequence number. Now 64-bits in clear
|
|
* text and w/o direction indicator */
|
|
spin_lock(&krb5_seq_lock);
|
|
seq_send = ctx->seq_send64++;
|
|
spin_unlock(&krb5_seq_lock);
|
|
*((u64 *)(krb5_hdr + 8)) = cpu_to_be64(seq_send);
|
|
|
|
if (ctx->initiate) {
|
|
cksumkey = ctx->initiator_sign;
|
|
cksum_usage = KG_USAGE_INITIATOR_SIGN;
|
|
} else {
|
|
cksumkey = ctx->acceptor_sign;
|
|
cksum_usage = KG_USAGE_ACCEPTOR_SIGN;
|
|
}
|
|
|
|
if (make_checksum_v2(ctx, krb5_hdr, GSS_KRB5_TOK_HDR_LEN,
|
|
text, 0, cksumkey, cksum_usage, &cksumobj))
|
|
return GSS_S_FAILURE;
|
|
|
|
memcpy(krb5_hdr + GSS_KRB5_TOK_HDR_LEN, cksumobj.data, cksumobj.len);
|
|
|
|
now = get_seconds();
|
|
|
|
return (ctx->endtime < now) ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE;
|
|
}
|
|
|
|
u32
|
|
gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text,
|
|
struct xdr_netobj *token)
|
|
{
|
|
struct krb5_ctx *ctx = gss_ctx->internal_ctx_id;
|
|
|
|
switch (ctx->enctype) {
|
|
default:
|
|
BUG();
|
|
case ENCTYPE_DES_CBC_RAW:
|
|
case ENCTYPE_DES3_CBC_RAW:
|
|
case ENCTYPE_ARCFOUR_HMAC:
|
|
return gss_get_mic_v1(ctx, text, token);
|
|
case ENCTYPE_AES128_CTS_HMAC_SHA1_96:
|
|
case ENCTYPE_AES256_CTS_HMAC_SHA1_96:
|
|
return gss_get_mic_v2(ctx, text, token);
|
|
}
|
|
}
|
|
|