1 /* 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. 9 * 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. 13 * 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. 17 * 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. 21 * 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. 25 * 26 * Sun Microsystems, Inc. 27 * 2550 Garcia Avenue 28 * Mountain View, California 94043 29 * 30 * $FreeBSD$ 31 */ 32 #if !defined(lint) && defined(SCCSIDS) 33 static char sccsid[] = "@(#)netname.c 1.8 91/03/11 Copyr 1986 Sun Micro"; 34 #endif 35 36 /* 37 * netname utility routines 38 * convert from unix names to network names and vice-versa 39 * This module is operating system dependent! 40 * What we define here will work with any unix system that has adopted 41 * the sun NIS domain architecture. 42 */ 43 44 #include <sys/param.h> 45 #include <rpc/rpc.h> 46 #include <rpc/rpc_com.h> 47 #ifdef YP 48 #include <rpcsvc/yp_prot.h> 49 #include <rpcsvc/ypclnt.h> 50 #endif 51 #include <ctype.h> 52 #include <stdlib.h> 53 #include <unistd.h> 54 #include <string.h> 55 #include <stdio.h> 56 57 #ifndef MAXHOSTNAMELEN 58 #define MAXHOSTNAMELEN 256 59 #endif 60 #ifndef NGROUPS 61 #define NGROUPS 16 62 #endif 63 64 static char *OPSYS = "unix"; 65 66 /* 67 * Figure out my fully qualified network name 68 */ 69 int 70 getnetname(name) 71 char name[MAXNETNAMELEN+1]; 72 { 73 uid_t uid; 74 75 uid = geteuid(); 76 if (uid == 0) { 77 return (host2netname(name, (char *) NULL, (char *) NULL)); 78 } else { 79 return (user2netname(name, uid, (char *) NULL)); 80 } 81 } 82 83 84 /* 85 * Convert unix cred to network-name 86 */ 87 int 88 user2netname(netname, uid, domain) 89 char netname[MAXNETNAMELEN + 1]; 90 uid_t uid; 91 char *domain; 92 { 93 char *dfltdom; 94 95 #define MAXIPRINT (20) /* max length of printed integer */ 96 97 if (domain == NULL) { 98 if (_rpc_get_default_domain(&dfltdom) != 0) { 99 return (0); 100 } 101 domain = dfltdom; 102 } 103 if (strlen(domain) + 1 + MAXIPRINT + 1 + strlen(OPSYS) > MAXNETNAMELEN) { 104 return (0); 105 } 106 (void) sprintf(netname, "%s.%ld@%s", OPSYS, (u_long)uid, domain); 107 return (1); 108 } 109 110 111 /* 112 * Convert host to network-name 113 */ 114 int 115 host2netname(netname, host, domain) 116 char netname[MAXNETNAMELEN + 1]; 117 char *host; 118 char *domain; 119 { 120 char *dfltdom; 121 char hostname[MAXHOSTNAMELEN+1]; 122 123 if (domain == NULL) { 124 if (_rpc_get_default_domain(&dfltdom) != 0) { 125 return (0); 126 } 127 domain = dfltdom; 128 } 129 if (host == NULL) { 130 (void) gethostname(hostname, sizeof(hostname)); 131 host = hostname; 132 } 133 if (strlen(domain) + 1 + strlen(host) + 1 + strlen(OPSYS) > MAXNETNAMELEN) { 134 return (0); 135 } 136 (void) sprintf(netname, "%s.%s@%s", OPSYS, host, domain); 137 return (1); 138 } 139