2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user or with the express written consent of
8 * Sun Microsystems, Inc.
10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 * Sun RPC is provided with no support and without any obligation on the
15 * part of Sun Microsystems, Inc. to assist in its use, correction,
16 * modification or enhancement.
18 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20 * OR ANY PART THEREOF.
22 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23 * or profits or other special, indirect and consequential damages, even if
24 * Sun has been advised of the possibility of such damages.
26 * Sun Microsystems, Inc.
28 * Mountain View, California 94043
31 #if defined(LIBC_SCCS) && !defined(lint)
32 static char sccsid[] = "@(#)netname.c 1.8 91/03/11 Copyr 1986 Sun Micro";
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
38 * netname utility routines
39 * convert from unix names to network names and vice-versa
40 * This module is operating system dependent!
41 * What we define here will work with any unix system that has adopted
42 * the sun NIS domain architecture.
45 #include "namespace.h"
46 #include <sys/param.h>
48 #include <rpc/rpc_com.h>
50 #include <rpcsvc/yp_prot.h>
51 #include <rpcsvc/ypclnt.h>
59 #include "un-namespace.h"
61 #ifndef MAXHOSTNAMELEN
62 #define MAXHOSTNAMELEN 256
68 #define TYPE_BIT(type) (sizeof (type) * CHAR_BIT)
70 #define TYPE_SIGNED(type) (((type) -1) < 0)
73 ** 302 / 1000 is log10(2.0) rounded up.
74 ** Subtract one for the sign bit if the type is signed;
75 ** add one for integer division truncation;
76 ** add one more for a minus sign if the type is signed.
78 #define INT_STRLEN_MAXIMUM(type) \
79 ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
81 static char *OPSYS = "unix";
84 * Figure out my fully qualified network name
88 char name[MAXNETNAMELEN+1];
94 return (host2netname(name, (char *) NULL, (char *) NULL));
96 return (user2netname(name, uid, (char *) NULL));
102 * Convert unix cred to network-name
105 user2netname(netname, uid, domain)
106 char netname[MAXNETNAMELEN + 1];
112 if (domain == NULL) {
113 if (__rpc_get_default_domain(&dfltdom) != 0) {
118 if (strlen(domain) + 1 + INT_STRLEN_MAXIMUM(u_long) + 1 + strlen(OPSYS) > MAXNETNAMELEN) {
121 (void) sprintf(netname, "%s.%ld@%s", OPSYS, (u_long)uid, domain);
127 * Convert host to network-name
130 host2netname(netname, host, domain)
131 char netname[MAXNETNAMELEN + 1];
136 char hostname[MAXHOSTNAMELEN+1];
138 if (domain == NULL) {
139 if (__rpc_get_default_domain(&dfltdom) != 0) {
145 (void) gethostname(hostname, sizeof(hostname));
148 if (strlen(domain) + 1 + strlen(host) + 1 + strlen(OPSYS) > MAXNETNAMELEN) {
151 (void) sprintf(netname, "%s.%s@%s", OPSYS, host, domain);