edit.c revision 1.8
1 /* $NetBSD: edit.c,v 1.8 1997/02/11 08:26:27 mrg 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 1.8 1997/02/11 08:26:27 mrg 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 #include <util.h> 57 58 #include "chpass.h" 59 60 void 61 edit(tempname, pw) 62 char *tempname; 63 struct passwd *pw; 64 { 65 struct stat begin, end; 66 67 for (;;) { 68 if (stat(tempname, &begin)) 69 (*Pw_error)(tempname, 1, 1); 70 pw_edit(1, tempname); 71 if (stat(tempname, &end)) 72 (*Pw_error)(tempname, 1, 1); 73 if (begin.st_mtime == end.st_mtime) { 74 warnx("no changes made"); 75 unlink(tempname); 76 (*Pw_error)(NULL, 0, 0); 77 } 78 if (verify(tempname, pw)) 79 break; 80 #ifdef YP 81 if (use_yp) 82 yppw_prompt(); 83 else 84 #endif 85 pw_prompt(); 86 } 87 } 88 89 /* 90 * display -- 91 * print out the file for the user to edit; strange side-effect: 92 * set conditional flag if the user gets to edit the shell. 93 */ 94 void 95 display(tempname, fd, pw) 96 char *tempname; 97 int fd; 98 struct passwd *pw; 99 { 100 FILE *fp; 101 char *bp, *p, *ttoa(); 102 103 if (!(fp = fdopen(fd, "w"))) 104 (*Pw_error)(tempname, 1, 1); 105 106 (void)fprintf(fp, 107 "#Changing user %sdatabase information for %s.\n", 108 use_yp ? "YP " : "", pw->pw_name); 109 if (!uid) { 110 (void)fprintf(fp, "Login: %s\n", pw->pw_name); 111 (void)fprintf(fp, "Password: %s\n", pw->pw_passwd); 112 (void)fprintf(fp, "Uid [#]: %d\n", pw->pw_uid); 113 (void)fprintf(fp, "Gid [# or name]: %d\n", pw->pw_gid); 114 (void)fprintf(fp, "Change [month day year]: %s\n", 115 ttoa(pw->pw_change)); 116 (void)fprintf(fp, "Expire [month day year]: %s\n", 117 ttoa(pw->pw_expire)); 118 (void)fprintf(fp, "Class: %s\n", pw->pw_class); 119 (void)fprintf(fp, "Home directory: %s\n", pw->pw_dir); 120 (void)fprintf(fp, "Shell: %s\n", 121 *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL); 122 } 123 /* Only admin can change "restricted" shells. */ 124 else if (ok_shell(pw->pw_shell)) 125 /* 126 * Make shell a restricted field. Ugly with a 127 * necklace, but there's not much else to do. 128 */ 129 (void)fprintf(fp, "Shell: %s\n", 130 *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL); 131 else 132 list[E_SHELL].restricted = 1; 133 bp = pw->pw_gecos; 134 p = strsep(&bp, ","); 135 (void)fprintf(fp, "Full Name: %s\n", p ? p : ""); 136 p = strsep(&bp, ","); 137 (void)fprintf(fp, "Location: %s\n", p ? p : ""); 138 p = strsep(&bp, ","); 139 (void)fprintf(fp, "Office Phone: %s\n", p ? p : ""); 140 p = strsep(&bp, ","); 141 (void)fprintf(fp, "Home Phone: %s\n", p ? p : ""); 142 143 (void)fchown(fd, getuid(), getgid()); 144 (void)fclose(fp); 145 } 146 147 int 148 verify(tempname, pw) 149 char *tempname; 150 struct passwd *pw; 151 { 152 ENTRY *ep; 153 char *p; 154 struct stat sb; 155 FILE *fp; 156 int len; 157 static char buf[LINE_MAX]; 158 159 if (!(fp = fopen(tempname, "r"))) 160 (*Pw_error)(tempname, 1, 1); 161 if (fstat(fileno(fp), &sb)) 162 (*Pw_error)(tempname, 1, 1); 163 if (sb.st_size == 0) { 164 warnx("corrupted temporary file"); 165 goto bad; 166 } 167 while (fgets(buf, sizeof(buf), fp)) { 168 if (!buf[0] || buf[0] == '#') 169 continue; 170 if (!(p = strchr(buf, '\n'))) { 171 warnx("line too long"); 172 goto bad; 173 } 174 *p = '\0'; 175 for (ep = list;; ++ep) { 176 if (!ep->prompt) { 177 warnx("unrecognized field"); 178 goto bad; 179 } 180 if (!strncasecmp(buf, ep->prompt, ep->len)) { 181 if (ep->restricted && uid) { 182 warnx( 183 "you may not change the %s field", 184 ep->prompt); 185 goto bad; 186 } 187 if (!(p = strchr(buf, ':'))) { 188 warnx("line corrupted"); 189 goto bad; 190 } 191 while (isspace(*++p)); 192 if (ep->except && strpbrk(p, ep->except)) { 193 warnx( 194 "illegal character in the \"%s\" field", 195 ep->prompt); 196 goto bad; 197 } 198 if ((ep->func)(p, pw, ep)) { 199 bad: (void)fclose(fp); 200 return (0); 201 } 202 break; 203 } 204 } 205 } 206 (void)fclose(fp); 207 208 /* Build the gecos field. */ 209 len = strlen(list[E_NAME].save) + strlen(list[E_BPHONE].save) + 210 strlen(list[E_HPHONE].save) + strlen(list[E_LOCATE].save) + 4; 211 if (!(p = malloc(len))) 212 err(1, NULL); 213 (void)snprintf(pw->pw_gecos = p, len, "%s,%s,%s,%s", list[E_NAME].save, 214 list[E_LOCATE].save, list[E_BPHONE].save, list[E_HPHONE].save); 215 216 if (snprintf(buf, sizeof(buf), 217 "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s", 218 pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid, pw->pw_class, 219 pw->pw_change, pw->pw_expire, pw->pw_gecos, pw->pw_dir, 220 pw->pw_shell) >= sizeof(buf)) { 221 warnx("entries too long"); 222 return (0); 223 } 224 return (pw_scan(buf, pw, (int *)NULL)); 225 } 226
Indexes created Thu Oct 23 22:10:10 GMT 2025