149 lines
4.1 KiB
C
149 lines
4.1 KiB
C
/*-
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* Copyright (c) 2009, Sun Microsystems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of Sun Microsystems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)netname.c 1.8 91/03/11 Copyr 1986 Sun Micro";
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* netname utility routines
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* convert from unix names to network names and vice-versa
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* This module is operating system dependent!
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* What we define here will work with any unix system that has adopted
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* the sun NIS domain architecture.
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*/
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#include "namespace.h"
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#include <sys/param.h>
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#include <rpc/rpc.h>
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#include <rpc/rpc_com.h>
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#ifdef YP
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#include <rpcsvc/yp_prot.h>
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#include <rpcsvc/ypclnt.h>
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#endif
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#include <ctype.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "un-namespace.h"
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#ifndef MAXHOSTNAMELEN
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#define MAXHOSTNAMELEN 256
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#endif
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#define TYPE_BIT(type) (sizeof (type) * CHAR_BIT)
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#define TYPE_SIGNED(type) (((type) -1) < 0)
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/*
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** 302 / 1000 is log10(2.0) rounded up.
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** Subtract one for the sign bit if the type is signed;
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** add one for integer division truncation;
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** add one more for a minus sign if the type is signed.
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*/
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#define INT_STRLEN_MAXIMUM(type) \
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((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
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static char *OPSYS = "unix";
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/*
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* Figure out my fully qualified network name
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*/
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int
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getnetname(name)
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char name[MAXNETNAMELEN+1];
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{
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uid_t uid;
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uid = geteuid();
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if (uid == 0) {
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return (host2netname(name, (char *) NULL, (char *) NULL));
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} else {
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return (user2netname(name, uid, (char *) NULL));
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}
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}
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/*
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* Convert unix cred to network-name
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*/
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int
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user2netname(netname, uid, domain)
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char netname[MAXNETNAMELEN + 1];
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const uid_t uid;
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const char *domain;
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{
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char *dfltdom;
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if (domain == NULL) {
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if (__rpc_get_default_domain(&dfltdom) != 0) {
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return (0);
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}
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domain = dfltdom;
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}
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if (strlen(domain) + 1 + INT_STRLEN_MAXIMUM(u_long) + 1 + strlen(OPSYS) > MAXNETNAMELEN) {
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return (0);
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}
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(void) sprintf(netname, "%s.%ld@%s", OPSYS, (u_long)uid, domain);
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return (1);
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}
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/*
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* Convert host to network-name
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*/
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int
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host2netname(netname, host, domain)
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char netname[MAXNETNAMELEN + 1];
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const char *host;
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const char *domain;
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{
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char *dfltdom;
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char hostname[MAXHOSTNAMELEN+1];
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if (domain == NULL) {
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if (__rpc_get_default_domain(&dfltdom) != 0) {
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return (0);
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}
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domain = dfltdom;
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}
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if (host == NULL) {
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(void) gethostname(hostname, sizeof(hostname));
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host = hostname;
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}
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if (strlen(domain) + 1 + strlen(host) + 1 + strlen(OPSYS) > MAXNETNAMELEN) {
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return (0);
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}
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(void) sprintf(netname, "%s.%s@%s", OPSYS, host, domain);
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return (1);
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}
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