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