2 * Copyright (c) 1990, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 2002 Networks Associates Technology, Inc.
7 * Portions of this software were developed for the FreeBSD Project by
8 * ThinkSec AS and NAI Labs, the Security Research Division of Network
9 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
10 * ("CBOSS"), as part of the DARPA CHATS research program.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the University of
23 * California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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43 static char sccsid[] = "@(#)edit.c 8.3 (Berkeley) 4/2/94";
47 #include <sys/cdefs.h>
48 __FBSDID("$FreeBSD$");
50 #include <sys/param.h>
68 static int display(const char *tfn, struct passwd *pw);
69 static struct passwd *verify(const char *tfn, struct passwd *pw);
72 edit(const char *tfn, struct passwd *pw)
78 if (display(tfn, pw) == -1)
89 if ((npw = verify(tfn, pw)) != NULL)
92 printf("re-edit the password file? ");
94 if ((line = fgetln(stdin, &len)) == NULL) {
98 if (len > 0 && (*line == 'N' || *line == 'n'))
105 * print out the file for the user to edit; strange side-effect:
106 * set conditional flag if the user gets to edit the shell.
109 display(const char *tfn, struct passwd *pw)
112 char *bp, *gecos, *p;
114 if ((fp = fopen(tfn, "w")) == NULL) {
120 "#Changing user information for %s.\n", pw->pw_name);
122 (void)fprintf(fp, "Login: %s\n", pw->pw_name);
123 (void)fprintf(fp, "Password: %s\n", pw->pw_passwd);
124 (void)fprintf(fp, "Uid [#]: %lu\n", (unsigned long)pw->pw_uid);
125 (void)fprintf(fp, "Gid [# or name]: %lu\n",
126 (unsigned long)pw->pw_gid);
127 (void)fprintf(fp, "Change [month day year]: %s\n",
128 ttoa(pw->pw_change));
129 (void)fprintf(fp, "Expire [month day year]: %s\n",
130 ttoa(pw->pw_expire));
131 (void)fprintf(fp, "Class: %s\n", pw->pw_class);
132 (void)fprintf(fp, "Home directory: %s\n", pw->pw_dir);
133 (void)fprintf(fp, "Shell: %s\n",
134 *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
136 /* Only admin can change "restricted" shells. */
138 else if (ok_shell(pw->pw_shell))
140 * Make shell a restricted field. Ugly with a
141 * necklace, but there's not much else to do.
144 else if ((!list[E_SHELL].restricted && ok_shell(pw->pw_shell)) ||
147 * If change not restrict (table.c) and standard shell
148 * OR if root, then allow editing of shell.
151 (void)fprintf(fp, "Shell: %s\n",
152 *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
154 list[E_SHELL].restricted = 1;
156 if ((bp = gecos = strdup(pw->pw_gecos)) == NULL) {
162 p = strsep(&bp, ",");
163 p = strdup(p ? p : "");
164 list[E_NAME].save = p;
165 if (!list[E_NAME].restricted || master_mode)
166 (void)fprintf(fp, "Full Name: %s\n", p);
168 p = strsep(&bp, ",");
169 p = strdup(p ? p : "");
170 list[E_LOCATE].save = p;
171 if (!list[E_LOCATE].restricted || master_mode)
172 (void)fprintf(fp, "Office Location: %s\n", p);
174 p = strsep(&bp, ",");
175 p = strdup(p ? p : "");
176 list[E_BPHONE].save = p;
177 if (!list[E_BPHONE].restricted || master_mode)
178 (void)fprintf(fp, "Office Phone: %s\n", p);
180 p = strsep(&bp, ",");
181 p = strdup(p ? p : "");
182 list[E_HPHONE].save = p;
183 if (!list[E_HPHONE].restricted || master_mode)
184 (void)fprintf(fp, "Home Phone: %s\n", p);
186 bp = strdup(bp ? bp : "");
187 list[E_OTHER].save = bp;
188 if (!list[E_OTHER].restricted || master_mode)
189 (void)fprintf(fp, "Other information: %s\n", bp);
193 (void)fchown(fileno(fp), getuid(), getgid());
198 static struct passwd *
199 verify(const char *tfn, struct passwd *pw)
209 if ((pw = pw_dup(pw)) == NULL)
211 if ((fp = fopen(tfn, "r")) == NULL ||
212 fstat(fileno(fp), &sb) == -1) {
217 if (sb.st_size == 0) {
218 warnx("corrupted temporary file");
224 for (line = 1; (buf = fgetln(fp, &len)) != NULL; ++line) {
225 if (*buf == '\0' || *buf == '#')
227 while (len > 0 && isspace(buf[len - 1]))
229 for (ep = list;; ++ep) {
231 warnx("%s: unrecognized field on line %d",
237 if (strncasecmp(buf, ep->prompt, ep->len) != 0)
239 if (ep->restricted && !master_mode) {
240 warnx("%s: you may not change the %s field",
244 for (p = buf; p < buf + len && *p != ':'; ++p)
247 warnx("%s: line %d corrupted", tfn, line);
250 while (++p < buf + len && isspace(*p))
253 asprintf(&val, "%.*s", (int)(buf + len - p), p);
256 if (ep->except && strpbrk(val, ep->except)) {
257 warnx("%s: invalid character in \"%s\" field '%s'",
258 tfn, ep->prompt, val);
261 if ((ep->func)(val, pw, ep))
269 /* Build the gecos field. */
270 len = asprintf(&p, "%s,%s,%s,%s,%s", list[E_NAME].save,
271 list[E_LOCATE].save, list[E_BPHONE].save,
272 list[E_HPHONE].save, list[E_OTHER].save);
278 while (len > 0 && p[len - 1] == ',')
288 npw = pw_scan(buf, PWSCAN_WARN|PWSCAN_MASTER);