151 lines
3.8 KiB
C
151 lines
3.8 KiB
C
/*
|
|
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
|
|
* unrestricted use provided that this legend is included on all tape
|
|
* media and as a part of the software program in whole or part. Users
|
|
* may copy or modify Sun RPC without charge, but are not authorized
|
|
* to license or distribute it to anyone else except as part of a product or
|
|
* program developed by the user or with the express written consent of
|
|
* Sun Microsystems, Inc.
|
|
*
|
|
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
|
|
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
|
|
*
|
|
* Sun RPC is provided with no support and without any obligation on the
|
|
* part of Sun Microsystems, Inc. to assist in its use, correction,
|
|
* modification or enhancement.
|
|
*
|
|
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
|
|
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
|
|
* OR ANY PART THEREOF.
|
|
*
|
|
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
|
|
* or profits or other special, indirect and consequential damages, even if
|
|
* Sun has been advised of the possibility of such damages.
|
|
*
|
|
* Sun Microsystems, Inc.
|
|
* 2550 Garcia Avenue
|
|
* Mountain View, California 94043
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#if !defined(lint) && defined(SCCSIDS)
|
|
static char sccsid[] = "@(#)netname.c 1.8 91/03/11 Copyr 1986 Sun Micro";
|
|
#endif
|
|
|
|
/*
|
|
* 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 <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>
|
|
|
|
#ifndef MAXHOSTNAMELEN
|
|
#define MAXHOSTNAMELEN 256
|
|
#endif
|
|
#ifndef NGROUPS
|
|
#define NGROUPS 16
|
|
#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(name)
|
|
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(netname, uid, domain)
|
|
char netname[MAXNETNAMELEN + 1];
|
|
uid_t uid;
|
|
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(netname, host, domain)
|
|
char netname[MAXNETNAMELEN + 1];
|
|
char *host;
|
|
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);
|
|
}
|