diff options
Diffstat (limited to 'freebsd/sys/rpc/authunix_prot.c')
| -rw-r--r-- | freebsd/sys/rpc/authunix_prot.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/freebsd/sys/rpc/authunix_prot.c b/freebsd/sys/rpc/authunix_prot.c new file mode 100644 index 00000000..b6cde0fb --- /dev/null +++ b/freebsd/sys/rpc/authunix_prot.c @@ -0,0 +1,131 @@ +/* $NetBSD: authunix_prot.c,v 1.12 2000/01/22 22:19:17 mycroft Exp $ */ + +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 2009, Sun Microsystems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * - Neither the name of Sun Microsystems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON 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 ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char *sccsid2 = "@(#)authunix_prot.c 1.15 87/08/11 Copyr 1984 Sun Micro"; +static char *sccsid = "@(#)authunix_prot.c 2.1 88/07/29 4.0 RPCSRC"; +#endif +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * authunix_prot.c + * XDR for UNIX style authentication parameters for RPC + * + * Copyright (C) 1984, Sun Microsystems, Inc. + */ + +#include <sys/param.h> +#include <sys/jail.h> +#include <sys/kernel.h> +#include <sys/systm.h> +#include <sys/ucred.h> + +#include <rpc/types.h> +#include <rpc/xdr.h> +#include <rpc/auth.h> + +#include <rpc/rpc_com.h> + +/* gids compose part of a credential; there may not be more than 16 of them */ +#define NGRPS 16 + +/* + * XDR for unix authentication parameters. + */ +bool_t +xdr_authunix_parms(XDR *xdrs, uint32_t *time, struct xucred *cred) +{ + uint32_t namelen; + uint32_t ngroups, i; + uint32_t junk; + char hostbuf[MAXHOSTNAMELEN]; + + if (xdrs->x_op == XDR_ENCODE) { + /* + * Restrict name length to 255 according to RFC 1057. + */ + getcredhostname(NULL, hostbuf, sizeof(hostbuf)); + namelen = strlen(hostbuf); + if (namelen > 255) + namelen = 255; + } else { + namelen = 0; + } + junk = 0; + + if (!xdr_uint32_t(xdrs, time) + || !xdr_uint32_t(xdrs, &namelen)) + return (FALSE); + + /* + * Ignore the hostname on decode. + */ + if (xdrs->x_op == XDR_ENCODE) { + if (!xdr_opaque(xdrs, hostbuf, namelen)) + return (FALSE); + } else { + xdr_setpos(xdrs, xdr_getpos(xdrs) + RNDUP(namelen)); + } + + if (!xdr_uint32_t(xdrs, &cred->cr_uid)) + return (FALSE); + if (!xdr_uint32_t(xdrs, &cred->cr_groups[0])) + return (FALSE); + + if (xdrs->x_op == XDR_ENCODE) { + ngroups = cred->cr_ngroups - 1; + if (ngroups > NGRPS) + ngroups = NGRPS; + } + + if (!xdr_uint32_t(xdrs, &ngroups)) + return (FALSE); + for (i = 0; i < ngroups; i++) { + if (i + 1 < ngroups_max + 1) { + if (!xdr_uint32_t(xdrs, &cred->cr_groups[i + 1])) + return (FALSE); + } else { + if (!xdr_uint32_t(xdrs, &junk)) + return (FALSE); + } + } + + if (xdrs->x_op == XDR_DECODE) { + if (ngroups + 1 > ngroups_max + 1) + cred->cr_ngroups = ngroups_max + 1; + else + cred->cr_ngroups = ngroups + 1; + } + + return (TRUE); +} |