edit.c revision 1.4
1 /* $NetBSD: edit.c,v 1.4 1995/03/26 04:55:27 glass Exp $ */ 2 3 /*- 4 * Copyright (c) 1990, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)edit.c 8.3 (Berkeley) 4/2/94"; 39 #else 40 static char rcsid[] = "$NetBSD: edit.c,v 1.4 1995/03/26 04:55:27 glass Exp $"; 41 #endif 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/stat.h> 46 47 #include <ctype.h> 48 #include <err.h> 49 #include <errno.h> 50 #include <paths.h> 51 #include <pwd.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <unistd.h> 56 57 #include <pw_scan.h> 58 #include <pw_util.h> 59 60 #include "chpass.h" 61 62 extern char *tempname; 63 64 void 65 edit(pw) 66 struct passwd *pw; 67 { 68 struct stat begin, end; 69 70 for (;;) { 71 if (stat(tempname, &begin)) 72 pw_error(tempname, 1, 1); 73 pw_edit(1); 74 if (stat(tempname, &end)) 75 pw_error(tempname, 1, 1); 76 if (begin.st_mtime == end.st_mtime) { 77 warnx("no changes made"); 78 pw_error(NULL, 0, 0); 79 } 80 if (verify(pw)) 81 break; 82 pw_prompt(); 83 } 84 } 85 86 /* 87 * display -- 88 * print out the file for the user to edit; strange side-effect: 89 * set conditional flag if the user gets to edit the shell. 90 */ 91 void 92 display(fd, pw) 93 int fd; 94 struct passwd *pw; 95 { 96 FILE *fp; 97 char *bp, *p, *ttoa(); 98 99 if (!(fp = fdopen(fd, "w"))) 100 pw_error(tempname, 1, 1); 101 102 (void)fprintf(fp, 103 "#Changing user database information for %s.\n", pw->pw_name); 104 if (!uid) { 105 (void)fprintf(fp, "Login: %s\n", pw->pw_name); 106 (void)fprintf(fp, "Password: %s\n", pw->pw_passwd); 107 (void)fprintf(fp, "Uid [#]: %d\n", pw->pw_uid); 108 (void)fprintf(fp, "Gid [# or name]: %d\n", pw->pw_gid); 109 (void)fprintf(fp, "Change [month day year]: %s\n", 110 ttoa(pw->pw_change)); 111 (void)fprintf(fp, "Expire [month day year]: %s\n", 112 ttoa(pw->pw_expire)); 113 (void)fprintf(fp, "Class: %s\n", pw->pw_class); 114 (void)fprintf(fp, "Home directory: %s\n", pw->pw_dir); 115 (void)fprintf(fp, "Shell: %s\n", 116 *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL); 117 } 118 /* Only admin can change "restricted" shells. */ 119 else if (ok_shell(pw->pw_shell)) 120 /* 121 * Make shell a restricted field. Ugly with a 122 * necklace, but there's not much else to do. 123 */ 124 (void)fprintf(fp, "Shell: %s\n", 125 *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL); 126 else 127 list[E_SHELL].restricted = 1; 128 bp = pw->pw_gecos; 129 p = strsep(&bp, ","); 130 (void)fprintf(fp, "Full Name: %s\n", p ? p : ""); 131 p = strsep(&bp, ","); 132 (void)fprintf(fp, "Location: %s\n", p ? p : ""); 133 p = strsep(&bp, ","); 134 (void)fprintf(fp, "Office Phone: %s\n", p ? p : ""); 135 p = strsep(&bp, ","); 136 (void)fprintf(fp, "Home Phone: %s\n", p ? p : ""); 137 138 (void)fchown(fd, getuid(), getgid()); 139 (void)fclose(fp); 140 } 141 142 int 143 verify(pw) 144 struct passwd *pw; 145 { 146 ENTRY *ep; 147 char *p; 148 struct stat sb; 149 FILE *fp; 150 int len; 151 static char buf[LINE_MAX]; 152 153 if (!(fp = fopen(tempname, "r"))) 154 pw_error(tempname, 1, 1); 155 if (fstat(fileno(fp), &sb)) 156 pw_error(tempname, 1, 1); 157 if (sb.st_size == 0) { 158 warnx("corrupted temporary file"); 159 goto bad; 160 } 161 while (fgets(buf, sizeof(buf), fp)) { 162 if (!buf[0] || buf[0] == '#') 163 continue; 164 if (!(p = strchr(buf, '\n'))) { 165 warnx("line too long"); 166 goto bad; 167 } 168 *p = '\0'; 169 for (ep = list;; ++ep) { 170 if (!ep->prompt) { 171 warnx("unrecognized field"); 172 goto bad; 173 } 174 if (!strncasecmp(buf, ep->prompt, ep->len)) { 175 if (ep->restricted && uid) { 176 warnx( 177 "you may not change the %s field", 178 ep->prompt); 179 goto bad; 180 } 181 if (!(p = strchr(buf, ':'))) { 182 warnx("line corrupted"); 183 goto bad; 184 } 185 while (isspace(*++p)); 186 if (ep->except && strpbrk(p, ep->except)) { 187 warnx( 188 "illegal character in the \"%s\" field", 189 ep->prompt); 190 goto bad; 191 } 192 if ((ep->func)(p, pw, ep)) { 193 bad: (void)fclose(fp); 194 return (0); 195 } 196 break; 197 } 198 } 199 } 200 (void)fclose(fp); 201 202 /* Build the gecos field. */ 203 len = strlen(list[E_NAME].save) + strlen(list[E_BPHONE].save) + 204 strlen(list[E_HPHONE].save) + strlen(list[E_LOCATE].save) + 4; 205 if (!(p = malloc(len))) 206 err(1, NULL); 207 (void)sprintf(pw->pw_gecos = p, "%s,%s,%s,%s", list[E_NAME].save, 208 list[E_LOCATE].save, list[E_BPHONE].save, list[E_HPHONE].save); 209 210 if (snprintf(buf, sizeof(buf), 211 "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s", 212 pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid, pw->pw_class, 213 pw->pw_change, pw->pw_expire, pw->pw_gecos, pw->pw_dir, 214 pw->pw_shell) >= sizeof(buf)) { 215 warnx("entries too long"); 216 return (0); 217 } 218 return (pw_scan(buf, pw)); 219 } 220
Indexes created Sun Sep 21 20:09:37 GMT 2025