mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-30 12:04:07 +00:00
142 lines
4.0 KiB
C
142 lines
4.0 KiB
C
/*-
|
|
* 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 sccsid[] = "@(#)netname.c 1.8 91/03/11 Copyr 1986 Sun Micro";
|
|
#endif
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*
|
|
* netname utility routines
|
|
* convert from unix names to network names and vice-versa
|
|
* This module is operating system dependent!
|
|
* What we define here will work with any unix system that has adopted
|
|
* the sun NIS domain architecture.
|
|
*/
|
|
|
|
#include "namespace.h"
|
|
#include <sys/param.h>
|
|
#include <rpc/rpc.h>
|
|
#include <rpc/rpc_com.h>
|
|
#ifdef YP
|
|
#include <rpcsvc/yp_prot.h>
|
|
#include <rpcsvc/ypclnt.h>
|
|
#endif
|
|
#include <ctype.h>
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include "un-namespace.h"
|
|
|
|
#ifndef MAXHOSTNAMELEN
|
|
#define MAXHOSTNAMELEN 256
|
|
#endif
|
|
|
|
#define TYPE_BIT(type) (sizeof (type) * CHAR_BIT)
|
|
|
|
#define TYPE_SIGNED(type) (((type) -1) < 0)
|
|
|
|
/*
|
|
** 302 / 1000 is log10(2.0) rounded up.
|
|
** Subtract one for the sign bit if the type is signed;
|
|
** add one for integer division truncation;
|
|
** add one more for a minus sign if the type is signed.
|
|
*/
|
|
#define INT_STRLEN_MAXIMUM(type) \
|
|
((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
|
|
|
|
static char *OPSYS = "unix";
|
|
|
|
/*
|
|
* Figure out my fully qualified network name
|
|
*/
|
|
int
|
|
getnetname(char name[MAXNETNAMELEN+1])
|
|
{
|
|
uid_t uid;
|
|
|
|
uid = geteuid();
|
|
if (uid == 0) {
|
|
return (host2netname(name, (char *) NULL, (char *) NULL));
|
|
} else {
|
|
return (user2netname(name, uid, (char *) NULL));
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Convert unix cred to network-name
|
|
*/
|
|
int
|
|
user2netname(char netname[MAXNETNAMELEN + 1], const uid_t uid, const char *domain)
|
|
{
|
|
char *dfltdom;
|
|
|
|
if (domain == NULL) {
|
|
if (__rpc_get_default_domain(&dfltdom) != 0) {
|
|
return (0);
|
|
}
|
|
domain = dfltdom;
|
|
}
|
|
if (strlen(domain) + 1 + INT_STRLEN_MAXIMUM(u_long) + 1 + strlen(OPSYS) > MAXNETNAMELEN) {
|
|
return (0);
|
|
}
|
|
(void) sprintf(netname, "%s.%ld@%s", OPSYS, (u_long)uid, domain);
|
|
return (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* Convert host to network-name
|
|
*/
|
|
int
|
|
host2netname(char netname[MAXNETNAMELEN + 1], const char *host, const char *domain)
|
|
{
|
|
char *dfltdom;
|
|
char hostname[MAXHOSTNAMELEN+1];
|
|
|
|
if (domain == NULL) {
|
|
if (__rpc_get_default_domain(&dfltdom) != 0) {
|
|
return (0);
|
|
}
|
|
domain = dfltdom;
|
|
}
|
|
if (host == NULL) {
|
|
(void) gethostname(hostname, sizeof(hostname));
|
|
host = hostname;
|
|
}
|
|
if (strlen(domain) + 1 + strlen(host) + 1 + strlen(OPSYS) > MAXNETNAMELEN) {
|
|
return (0);
|
|
}
|
|
(void) sprintf(netname, "%s.%s@%s", OPSYS, host, domain);
|
|
return (1);
|
|
}
|