1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23*0Sstevel@tonic-gate /* All Rights Reserved */ 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate /* 27*0Sstevel@tonic-gate * Copyright (c) 1999, by Sun Microsystems, Inc. 28*0Sstevel@tonic-gate * All rights reserved. 29*0Sstevel@tonic-gate */ 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 32*0Sstevel@tonic-gate /*LINTLIBRARY*/ 33*0Sstevel@tonic-gate 34*0Sstevel@tonic-gate #include "synonyms.h" 35*0Sstevel@tonic-gate #include "libmail.h" 36*0Sstevel@tonic-gate #include <sys/types.h> 37*0Sstevel@tonic-gate #include <ctype.h> 38*0Sstevel@tonic-gate #ifdef SVR4 39*0Sstevel@tonic-gate #include <sys/utsname.h> 40*0Sstevel@tonic-gate #include <sys/systeminfo.h> 41*0Sstevel@tonic-gate #endif 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate #define NMLN 512 44*0Sstevel@tonic-gate #ifdef SVR4 45*0Sstevel@tonic-gate #if SYS_NMLN > NMLN 46*0Sstevel@tonic-gate #undef NMLN 47*0Sstevel@tonic-gate #define NMLN SYS_NMLN 48*0Sstevel@tonic-gate #endif 49*0Sstevel@tonic-gate #endif 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate static char *look4domain(char *, char *, int); 52*0Sstevel@tonic-gate static char *readdomain(char *, int); 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate /* 55*0Sstevel@tonic-gate * NAME 56*0Sstevel@tonic-gate * maildomain() - retrieve the domain name 57*0Sstevel@tonic-gate * 58*0Sstevel@tonic-gate * SYNOPSIS 59*0Sstevel@tonic-gate * char *maildomain() 60*0Sstevel@tonic-gate * 61*0Sstevel@tonic-gate * DESCRIPTION 62*0Sstevel@tonic-gate * Retrieve the domain name from xgetenv("DOMAIN"). 63*0Sstevel@tonic-gate * If that is not set, look in /etc/resolv.conf, /etc/inet/named.boot 64*0Sstevel@tonic-gate * and /etc/named.boot for "^domain[ ]+<domain>". 65*0Sstevel@tonic-gate * If that is not set, use sysinfo(SI_SRPC_DOMAIN) from 66*0Sstevel@tonic-gate * -lnsl. Otherwise, return an empty string. 67*0Sstevel@tonic-gate */ 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate /* read a file for the domain */ 70*0Sstevel@tonic-gate static char *look4domain(char *file, char *buf, int size) 71*0Sstevel@tonic-gate { 72*0Sstevel@tonic-gate char *ret = 0; 73*0Sstevel@tonic-gate FILE *fp = fopen(file, "r"); 74*0Sstevel@tonic-gate 75*0Sstevel@tonic-gate if (!fp) 76*0Sstevel@tonic-gate return (0); 77*0Sstevel@tonic-gate 78*0Sstevel@tonic-gate while (fgets(buf, size, fp)) 79*0Sstevel@tonic-gate if (strncmp(buf, "domain", 6) == 0) 80*0Sstevel@tonic-gate if (isspace(buf[6])) { 81*0Sstevel@tonic-gate char *x = skipspace(buf + 6); 82*0Sstevel@tonic-gate if (isgraph(*x)) { 83*0Sstevel@tonic-gate trimnl(x); 84*0Sstevel@tonic-gate strmove(buf, x); 85*0Sstevel@tonic-gate ret = buf; 86*0Sstevel@tonic-gate break; 87*0Sstevel@tonic-gate } 88*0Sstevel@tonic-gate } 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate (void) fclose(fp); 91*0Sstevel@tonic-gate return (ret); 92*0Sstevel@tonic-gate } 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate /* read the domain from the xenvironment or one of the files */ 95*0Sstevel@tonic-gate static char *readdomain(char *buf, int size) 96*0Sstevel@tonic-gate { 97*0Sstevel@tonic-gate char *ret; 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate if ((ret = xgetenv("DOMAIN")) != 0) { 100*0Sstevel@tonic-gate (void) strncpy(buf, ret, size); 101*0Sstevel@tonic-gate return (buf); 102*0Sstevel@tonic-gate } 103*0Sstevel@tonic-gate 104*0Sstevel@tonic-gate if (((ret = look4domain("/etc/resolv.conf", buf, size)) != 0) || 105*0Sstevel@tonic-gate ((ret = look4domain("/etc/inet/named.boot", buf, size)) != 0) || 106*0Sstevel@tonic-gate ((ret = look4domain("/etc/named.boot", buf, size)) != 0)) 107*0Sstevel@tonic-gate return (ret); 108*0Sstevel@tonic-gate 109*0Sstevel@tonic-gate #ifdef SVR4 110*0Sstevel@tonic-gate if (sysinfo(SI_SRPC_DOMAIN, buf, size) >= 0) 111*0Sstevel@tonic-gate return (buf); 112*0Sstevel@tonic-gate #endif 113*0Sstevel@tonic-gate 114*0Sstevel@tonic-gate return (0); 115*0Sstevel@tonic-gate } 116*0Sstevel@tonic-gate 117*0Sstevel@tonic-gate char * 118*0Sstevel@tonic-gate maildomain(void) 119*0Sstevel@tonic-gate { 120*0Sstevel@tonic-gate static char *domain = 0; 121*0Sstevel@tonic-gate static char dombuf[NMLN+1] = "."; 122*0Sstevel@tonic-gate 123*0Sstevel@tonic-gate /* if we've already been here, return the info */ 124*0Sstevel@tonic-gate if (domain != 0) 125*0Sstevel@tonic-gate return (domain); 126*0Sstevel@tonic-gate 127*0Sstevel@tonic-gate domain = readdomain(dombuf+1, NMLN); 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate /* Make certain that the domain begins with a single dot */ 130*0Sstevel@tonic-gate /* and does not have one at the end. */ 131*0Sstevel@tonic-gate if (domain) { 132*0Sstevel@tonic-gate size_t len; 133*0Sstevel@tonic-gate domain = dombuf; 134*0Sstevel@tonic-gate while (*domain && *domain == '.') 135*0Sstevel@tonic-gate domain++; 136*0Sstevel@tonic-gate domain--; 137*0Sstevel@tonic-gate len = strlen(domain); 138*0Sstevel@tonic-gate while ((len > 0) && (domain[len-1] == '.')) 139*0Sstevel@tonic-gate domain[--len] = '\0'; 140*0Sstevel@tonic-gate } 141*0Sstevel@tonic-gate /* no domain information */ 142*0Sstevel@tonic-gate else 143*0Sstevel@tonic-gate domain = ""; 144*0Sstevel@tonic-gate 145*0Sstevel@tonic-gate return (domain); 146*0Sstevel@tonic-gate } 147