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 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)edit.c 8.3 (Berkeley) 4/2/94
37 * $FreeBSD: src/usr.bin/chpass/edit.c,v 1.23 2003/04/09 18:18:42 des Exp $
38 * $DragonFly: src/usr.bin/chpass/edit.c,v 1.3 2003/10/02 17:42:26 hmp Exp $
41 #include <sys/param.h>
59 static int display(const char *tfn, struct passwd *pw);
60 static struct passwd *verify(const char *tfn, struct passwd *pw);
63 edit(const char *tfn, struct passwd *pw)
69 if (display(tfn, pw) == -1)
80 if ((npw = verify(tfn, pw)) != NULL)
83 printf("re-edit the password file? ");
85 if ((line = fgetln(stdin, &len)) == NULL) {
89 if (len > 0 && (*line == 'N' || *line == 'n'))
96 * print out the file for the user to edit; strange side-effect:
97 * set conditional flag if the user gets to edit the shell.
100 display(const char *tfn, struct passwd *pw)
103 char *bp, *gecos, *p;
105 if ((fp = fopen(tfn, "w")) == NULL) {
110 fprintf(fp, "#Changing user information for %s.\n", pw->pw_name);
112 fprintf(fp, "Login: %s\n", pw->pw_name);
113 fprintf(fp, "Password: %s\n", pw->pw_passwd);
114 fprintf(fp, "Uid [#]: %lu\n", (unsigned long)pw->pw_uid);
115 fprintf(fp, "Gid [# or name]: %lu\n",
116 (unsigned long)pw->pw_gid);
117 fprintf(fp, "Change [month day year]: %s\n",
118 ttoa(pw->pw_change));
119 fprintf(fp, "Expire [month day year]: %s\n",
120 ttoa(pw->pw_expire));
121 fprintf(fp, "Class: %s\n", pw->pw_class);
122 fprintf(fp, "Home directory: %s\n", pw->pw_dir);
123 fprintf(fp, "Shell: %s\n",
124 *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
126 /* Only admin can change "restricted" shells. */
128 else if (ok_shell(pw->pw_shell))
130 * Make shell a restricted field. Ugly with a
131 * necklace, but there's not much else to do.
134 else if ((!list[E_SHELL].restricted && ok_shell(pw->pw_shell)) ||
137 * If change not restrict (table.c) and standard shell
138 * OR if root, then allow editing of shell.
141 fprintf(fp, "Shell: %s\n",
142 *pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
144 list[E_SHELL].restricted = 1;
146 if ((bp = gecos = strdup(pw->pw_gecos)) == NULL) {
152 p = strsep(&bp, ",");
153 p = strdup(p ? p : "");
154 list[E_NAME].save = p;
155 if (!list[E_NAME].restricted || master_mode)
156 fprintf(fp, "Full Name: %s\n", p);
158 p = strsep(&bp, ",");
159 p = strdup(p ? p : "");
160 list[E_LOCATE].save = p;
161 if (!list[E_LOCATE].restricted || master_mode)
162 fprintf(fp, "Office Location: %s\n", p);
164 p = strsep(&bp, ",");
165 p = strdup(p ? p : "");
166 list[E_BPHONE].save = p;
167 if (!list[E_BPHONE].restricted || master_mode)
168 fprintf(fp, "Office Phone: %s\n", p);
170 p = strsep(&bp, ",");
171 p = strdup(p ? p : "");
172 list[E_HPHONE].save = p;
173 if (!list[E_HPHONE].restricted || master_mode)
174 fprintf(fp, "Home Phone: %s\n", p);
176 bp = strdup(bp ? bp : "");
177 list[E_OTHER].save = bp;
178 if (!list[E_OTHER].restricted || master_mode)
179 fprintf(fp, "Other information: %s\n", bp);
183 fchown(fileno(fp), getuid(), getgid());
188 static struct passwd *
189 verify(const char *tfn, struct passwd *pw)
199 if ((pw = pw_dup(pw)) == NULL)
201 if ((fp = fopen(tfn, "r")) == NULL ||
202 fstat(fileno(fp), &sb) == -1) {
207 if (sb.st_size == 0) {
208 warnx("corrupted temporary file");
214 for (line = 1; (buf = fgetln(fp, &len)) != NULL; ++line) {
215 if (*buf == '\0' || *buf == '#')
217 while (len > 0 && isspace(buf[len - 1]))
219 for (ep = list;; ++ep) {
221 warnx("%s: unrecognized field on line %d",
227 if (strncasecmp(buf, ep->prompt, ep->len) != 0)
229 if (ep->restricted && !master_mode) {
230 warnx("%s: you may not change the %s field",
234 for (p = buf; p < buf + len && *p != ':'; ++p)
237 warnx("%s: line %d corrupted", tfn, line);
240 while (++p < buf + len && isspace(*p))
243 asprintf(&val, "%.*s", (int)(buf + len - p), p);
246 if (ep->except && strpbrk(val, ep->except)) {
247 warnx("%s: invalid character in \"%s\" field '%s'",
248 tfn, ep->prompt, val);
251 if ((ep->func)(val, pw, ep))
259 /* Build the gecos field. */
260 len = asprintf(&p, "%s,%s,%s,%s,%s", list[E_NAME].save,
261 list[E_LOCATE].save, list[E_BPHONE].save,
262 list[E_HPHONE].save, list[E_OTHER].save);
268 while (len > 0 && p[len - 1] == ',')
278 npw = pw_scan(buf, PWSCAN_WARN|PWSCAN_MASTER);