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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23 /* All Rights Reserved */ 24 25 26 /* 27 * Copyright (c) 1997, by Sun Microsystems, Inc. 28 * All rights reserved. 29 */ 30 31 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.2 */ 32 /*LINTLIBRARY*/ 33 34 #include <sys/types.h> 35 #include <stdio.h> 36 #include <string.h> 37 #include <ctype.h> 38 #include <pwd.h> 39 #include <stdlib.h> 40 #include <limits.h> 41 #include "libadm.h" 42 43 #define PROMPT "Enter the login name of an existing user" 44 #define MESG "Please enter the login name of an existing user." 45 #define ALTMESG "Please enter one of the following login names:\\n\\t" 46 #define MALSIZ 64 47 48 #define DELIM1 '/' 49 #define BLANK ' ' 50 51 static char * 52 setmsg(int disp) 53 { 54 struct passwd 55 *pwdptr; 56 int count; 57 size_t n, m; 58 char *msg; 59 60 if (disp == 0) 61 return (MESG); 62 63 m = MALSIZ; 64 n = sizeof (ALTMESG); 65 msg = (char *) calloc(m, sizeof (char)); 66 (void) strcpy(msg, ALTMESG); 67 68 setpwent(); 69 count = 0; 70 while (pwdptr = getpwent()) { 71 n += strlen(pwdptr->pw_name) + 2; 72 while (n >= m) { 73 m += MALSIZ; 74 msg = (char *) realloc(msg, m*sizeof (char)); 75 } 76 if (count++) 77 (void) strcat(msg, ", "); 78 (void) strcat(msg, pwdptr->pw_name); 79 } 80 endpwent(); 81 return (msg); 82 } 83 84 int 85 ckuid_dsp(void) 86 { 87 struct passwd *pwdptr; 88 89 /* if display flag is set, then list out passwd file */ 90 if (ckpwdfile() == 1) 91 return (1); 92 setpwent(); 93 while (pwdptr = getpwent()) 94 (void) printf("%s\n", pwdptr->pw_name); 95 endpwent(); 96 return (0); 97 } 98 99 int 100 ckuid_val(char *usrnm) 101 { 102 int valid; 103 104 setpwent(); 105 valid = (getpwnam(usrnm) ? 0 : 1); 106 endpwent(); 107 return (valid); 108 } 109 110 int 111 ckpwdfile(void) /* check to see if passwd file there */ 112 { 113 struct passwd *pwdptr; 114 115 setpwent(); 116 pwdptr = getpwent(); 117 if (!pwdptr) { 118 endpwent(); 119 return (1); 120 } 121 endpwent(); 122 return (0); 123 } 124 125 void 126 ckuid_err(short disp, char *error) 127 { 128 char *msg; 129 130 msg = setmsg(disp); 131 puterror(stdout, msg, error); 132 if (disp) 133 free(msg); 134 } 135 136 void 137 ckuid_hlp(int disp, char *help) 138 { 139 char *msg; 140 141 msg = setmsg(disp); 142 puthelp(stdout, msg, help); 143 if (disp) 144 free(msg); 145 } 146 147 int 148 ckuid(char *uid, short disp, char *defstr, char *error, char *help, 149 char *prompt) 150 { 151 char *defmesg, 152 input[MAX_INPUT]; 153 154 defmesg = NULL; 155 if (!prompt) 156 prompt = PROMPT; 157 158 start: 159 putprmpt(stderr, prompt, NULL, defstr); 160 if (getinput(input)) { 161 if (disp && defmesg) 162 free(defmesg); 163 return (1); 164 } 165 166 if (!strlen(input)) { 167 if (defstr) { 168 if (disp && defmesg) 169 free(defmesg); 170 (void) strcpy(uid, defstr); 171 return (0); 172 } 173 if (!defmesg) 174 defmesg = setmsg(disp); 175 puterror(stderr, defmesg, error); 176 goto start; 177 } else if (strcmp(input, "?") == 0) { 178 if (!defmesg) 179 defmesg = setmsg(disp); 180 puthelp(stderr, defmesg, help); 181 goto start; 182 } else if (ckquit && (strcmp(input, "q") == 0)) { 183 if (disp && defmesg) 184 free(defmesg); 185 return (3); 186 } else if (ckuid_val(input)) { 187 if (!defmesg) 188 defmesg = setmsg(disp); 189 puterror(stderr, defmesg, error); 190 goto start; 191 } 192 (void) strcpy(uid, input); 193 if (disp && defmesg) 194 free(defmesg); 195 return (0); 196 } 197