2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (c) 1990, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 * Copyright (c) 2002 Networks Associates Technology, Inc.
9 * Portions of this software were developed for the FreeBSD Project by
10 * ThinkSec AS and NAI Labs, the Security Research Division of Network
11 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
12 * ("CBOSS"), as part of the DARPA CHATS research program.
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. All advertising materials mentioning features or use of this software
23 * must display the following acknowledgement:
24 * This product includes software developed by the University of
25 * California, Berkeley and its contributors.
26 * 4. Neither the name of the University nor the names of its contributors
27 * may be used to endorse or promote products derived from this software
28 * without specific prior written permission.
30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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45 static char sccsid[] = "@(#)edit.c 8.3 (Berkeley) 4/2/94";
49 #include <sys/cdefs.h>
50 __FBSDID("$FreeBSD$");
52 #include <sys/param.h>
70 static int display(const char *tfn, struct passwd *pw);
71 static struct passwd *verify(const char *tfn, struct passwd *pw);
74 edit(const char *tfn, struct passwd *pw)
80 if (display(tfn, pw) == -1)
91 if ((npw = verify(tfn, pw)) != NULL)
94 printf("re-edit the password file? ");
96 if ((line = fgetln(stdin, &len)) == NULL) {
100 if (len > 0 && (*line == 'N' || *line == 'n'))
107 * print out the file for the user to edit; strange side-effect:
108 * set conditional flag if the user gets to edit the shell.
111 display(const char *tfn, struct passwd *pw)
114 char *bp, *gecos, *p;
116 if ((fp = fopen(tfn, "w")) == NULL) {
122 "#Changing user information for %s.\n", pw->pw_name);
124 (void)fprintf(fp, "Login: %s\n", pw->pw_name);
125 (void)fprintf(fp, "Password: %s\n", pw->pw_passwd);
126 (void)fprintf(fp, "Uid [#]: %lu\n", (unsigned long)pw->pw_uid);
127 (void)fprintf(fp, "Gid [# or name]: %lu\n",
128 (unsigned long)pw->pw_gid);
129 (void)fprintf(fp, "Change [month day year]: %s\n",
130 ttoa(pw->pw_change));
131 (void)fprintf(fp, "Expire [month day year]: %s\n",
132 ttoa(pw->pw_expire));
133 (void)fprintf(fp, "Class: %s\n", pw->pw_class);
134 (void)fprintf(fp, "Home directory: %s\n", pw->pw_dir);
135 (void)fprintf(fp, "Shell: %s\n",
136 *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
138 /* Only admin can change "restricted" shells. */
140 else if (ok_shell(pw->pw_shell))
142 * Make shell a restricted field. Ugly with a
143 * necklace, but there's not much else to do.
146 else if ((!list[E_SHELL].restricted && ok_shell(pw->pw_shell)) ||
149 * If change not restrict (table.c) and standard shell
150 * OR if root, then allow editing of shell.
153 (void)fprintf(fp, "Shell: %s\n",
154 *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
156 list[E_SHELL].restricted = 1;
158 if ((bp = gecos = strdup(pw->pw_gecos)) == NULL) {
164 p = strsep(&bp, ",");
165 p = strdup(p ? p : "");
166 list[E_NAME].save = p;
167 if (!list[E_NAME].restricted || master_mode)
168 (void)fprintf(fp, "Full Name: %s\n", p);
170 p = strsep(&bp, ",");
171 p = strdup(p ? p : "");
172 list[E_LOCATE].save = p;
173 if (!list[E_LOCATE].restricted || master_mode)
174 (void)fprintf(fp, "Office Location: %s\n", p);
176 p = strsep(&bp, ",");
177 p = strdup(p ? p : "");
178 list[E_BPHONE].save = p;
179 if (!list[E_BPHONE].restricted || master_mode)
180 (void)fprintf(fp, "Office Phone: %s\n", p);
182 p = strsep(&bp, ",");
183 p = strdup(p ? p : "");
184 list[E_HPHONE].save = p;
185 if (!list[E_HPHONE].restricted || master_mode)
186 (void)fprintf(fp, "Home Phone: %s\n", p);
188 bp = strdup(bp ? bp : "");
189 list[E_OTHER].save = bp;
190 if (!list[E_OTHER].restricted || master_mode)
191 (void)fprintf(fp, "Other information: %s\n", bp);
195 (void)fchown(fileno(fp), getuid(), getgid());
200 static struct passwd *
201 verify(const char *tfn, struct passwd *pw)
211 if ((pw = pw_dup(pw)) == NULL)
213 if ((fp = fopen(tfn, "r")) == NULL ||
214 fstat(fileno(fp), &sb) == -1) {
219 if (sb.st_size == 0) {
220 warnx("corrupted temporary file");
226 for (line = 1; (buf = fgetln(fp, &len)) != NULL; ++line) {
227 if (*buf == '\0' || *buf == '#')
229 while (len > 0 && isspace(buf[len - 1]))
231 for (ep = list;; ++ep) {
233 warnx("%s: unrecognized field on line %d",
239 if (strncasecmp(buf, ep->prompt, ep->len) != 0)
241 if (ep->restricted && !master_mode) {
242 warnx("%s: you may not change the %s field",
246 for (p = buf; p < buf + len && *p != ':'; ++p)
249 warnx("%s: line %d corrupted", tfn, line);
252 while (++p < buf + len && isspace(*p))
255 asprintf(&val, "%.*s", (int)(buf + len - p), p);
258 if (ep->except && strpbrk(val, ep->except)) {
259 warnx("%s: invalid character in \"%s\" field '%s'",
260 tfn, ep->prompt, val);
263 if ((ep->func)(val, pw, ep))
271 /* Build the gecos field. */
272 len = asprintf(&p, "%s,%s,%s,%s,%s", list[E_NAME].save,
273 list[E_LOCATE].save, list[E_BPHONE].save,
274 list[E_HPHONE].save, list[E_OTHER].save);
280 while (len > 0 && p[len - 1] == ',')
290 npw = pw_scan(buf, PWSCAN_WARN|PWSCAN_MASTER);