1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <unistd.h> 31 #include <string.h> 32 #include <errno.h> 33 #include <pwd.h> 34 35 int 36 main(int argc, char *argv[]) 37 { 38 char *plogin = NULL; 39 char cmds[BUFSIZ] = { 0 }; 40 char sep[] = " "; 41 struct passwd *ppw = NULL; 42 int i, len; 43 44 if (argc < 3 || strlen(argv[1]) == 0) { 45 (void) printf("\tUsage: %s <login> <commands> ...\n", argv[0]); 46 return (1); 47 } 48 49 plogin = argv[1]; 50 len = 0; 51 for (i = 2; i < argc; i++) { 52 (void) snprintf(cmds+len, sizeof (cmds)-len, 53 "%s%s", argv[i], sep); 54 len += strlen(argv[i]) + strlen(sep); 55 } 56 57 if ((ppw = getpwnam(plogin)) == NULL) { 58 perror("getpwnam"); 59 return (errno); 60 } 61 if (setgid(ppw->pw_gid) != 0) { 62 perror("setgid"); 63 return (errno); 64 } 65 if (setuid(ppw->pw_uid) != 0) { 66 perror("setuid"); 67 return (errno); 68 } 69 70 if (execl("/bin/sh", "sh", "-c", cmds, (char *)0) != 0) { 71 perror("execl"); 72 return (errno); 73 } 74 75 return (0); 76 } 77