1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 23*7c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 24*7c478bd9Sstevel@tonic-gate 25*7c478bd9Sstevel@tonic-gate 26*7c478bd9Sstevel@tonic-gate /* 27*7c478bd9Sstevel@tonic-gate * Copyright (c) 1999 by Sun Microsystems, Inc. 28*7c478bd9Sstevel@tonic-gate * All rights reserved. 29*7c478bd9Sstevel@tonic-gate */ 30*7c478bd9Sstevel@tonic-gate 31*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 32*7c478bd9Sstevel@tonic-gate 33*7c478bd9Sstevel@tonic-gate /* 34*7c478bd9Sstevel@tonic-gate * logdir() 35*7c478bd9Sstevel@tonic-gate * 36*7c478bd9Sstevel@tonic-gate * This routine does not use the getpwent(3) library routine 37*7c478bd9Sstevel@tonic-gate * because the latter uses the stdio package. The allocation of 38*7c478bd9Sstevel@tonic-gate * storage in this package destroys the integrity of the shell's 39*7c478bd9Sstevel@tonic-gate * storage allocation. 40*7c478bd9Sstevel@tonic-gate */ 41*7c478bd9Sstevel@tonic-gate 42*7c478bd9Sstevel@tonic-gate #include <fcntl.h> /* O_RDONLY */ 43*7c478bd9Sstevel@tonic-gate #include <stdlib.h> 44*7c478bd9Sstevel@tonic-gate #include <unistd.h> 45*7c478bd9Sstevel@tonic-gate #include <string.h> 46*7c478bd9Sstevel@tonic-gate 47*7c478bd9Sstevel@tonic-gate #define BUFSIZ 160 48*7c478bd9Sstevel@tonic-gate 49*7c478bd9Sstevel@tonic-gate static char line[BUFSIZ+1]; 50*7c478bd9Sstevel@tonic-gate 51*7c478bd9Sstevel@tonic-gate static char * 52*7c478bd9Sstevel@tonic-gate passwdfield(char *p) 53*7c478bd9Sstevel@tonic-gate { 54*7c478bd9Sstevel@tonic-gate while (*p && *p != ':') 55*7c478bd9Sstevel@tonic-gate ++p; 56*7c478bd9Sstevel@tonic-gate if (*p) 57*7c478bd9Sstevel@tonic-gate *p++ = 0; 58*7c478bd9Sstevel@tonic-gate return (p); 59*7c478bd9Sstevel@tonic-gate } 60*7c478bd9Sstevel@tonic-gate 61*7c478bd9Sstevel@tonic-gate char * 62*7c478bd9Sstevel@tonic-gate logdir(char *name) 63*7c478bd9Sstevel@tonic-gate { 64*7c478bd9Sstevel@tonic-gate char *p; 65*7c478bd9Sstevel@tonic-gate int i, j; 66*7c478bd9Sstevel@tonic-gate int pwf; 67*7c478bd9Sstevel@tonic-gate 68*7c478bd9Sstevel@tonic-gate /* attempt to open the password file */ 69*7c478bd9Sstevel@tonic-gate if ((pwf = open("/etc/passwd", O_RDONLY)) == -1) 70*7c478bd9Sstevel@tonic-gate return (0); 71*7c478bd9Sstevel@tonic-gate 72*7c478bd9Sstevel@tonic-gate /* find the matching password entry */ 73*7c478bd9Sstevel@tonic-gate do { 74*7c478bd9Sstevel@tonic-gate /* get the next line in the password file */ 75*7c478bd9Sstevel@tonic-gate i = read(pwf, line, BUFSIZ); 76*7c478bd9Sstevel@tonic-gate for (j = 0; j < i; j++) 77*7c478bd9Sstevel@tonic-gate if (line[j] == '\n') 78*7c478bd9Sstevel@tonic-gate break; 79*7c478bd9Sstevel@tonic-gate /* return a null pointer if the whole file has been read */ 80*7c478bd9Sstevel@tonic-gate if (j >= i) 81*7c478bd9Sstevel@tonic-gate return (0); 82*7c478bd9Sstevel@tonic-gate line[++j] = 0; /* terminate the line */ 83*7c478bd9Sstevel@tonic-gate /* point at the next line */ 84*7c478bd9Sstevel@tonic-gate (void) lseek(pwf, (long)(j - i), 1); 85*7c478bd9Sstevel@tonic-gate p = passwdfield(line); /* get the logname */ 86*7c478bd9Sstevel@tonic-gate } while (*name != *line || /* fast pretest */ 87*7c478bd9Sstevel@tonic-gate strcmp(name, line) != 0); 88*7c478bd9Sstevel@tonic-gate (void) close(pwf); 89*7c478bd9Sstevel@tonic-gate 90*7c478bd9Sstevel@tonic-gate /* skip the intervening fields */ 91*7c478bd9Sstevel@tonic-gate p = passwdfield(p); 92*7c478bd9Sstevel@tonic-gate p = passwdfield(p); 93*7c478bd9Sstevel@tonic-gate p = passwdfield(p); 94*7c478bd9Sstevel@tonic-gate p = passwdfield(p); 95*7c478bd9Sstevel@tonic-gate 96*7c478bd9Sstevel@tonic-gate /* return the login directory */ 97*7c478bd9Sstevel@tonic-gate (void) passwdfield(p); 98*7c478bd9Sstevel@tonic-gate return (p); 99*7c478bd9Sstevel@tonic-gate } 100