1 /* $NetBSD: edit.c,v 1.21 2011/08/31 16:24:57 plunky Exp $ */
4 * Copyright (c) 1990, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/cdefs.h>
35 static char sccsid
[] = "@(#)edit.c 8.3 (Berkeley) 4/2/94";
37 __RCSID("$NetBSD: edit.c,v 1.21 2011/08/31 16:24:57 plunky Exp $");
41 #include <sys/param.h>
59 edit(char *tempname
, struct passwd
*pw
)
61 struct stat begin
, end
;
64 if (stat(tempname
, &begin
))
65 (*Pw_error
)(tempname
, 1, 1);
67 if (stat(tempname
, &end
))
68 (*Pw_error
)(tempname
, 1, 1);
69 if (begin
.st_mtime
== end
.st_mtime
) {
70 warnx("no changes made");
71 (*Pw_error
)(NULL
, 0, 0);
73 if (verify(tempname
, pw
))
86 * print out the file for the user to edit; strange side-effect:
87 * set conditional flag if the user gets to edit the shell.
90 display(char *tempname
, int fd
, struct passwd
*pw
)
94 char chgstr
[256], expstr
[256];
96 if (!(fp
= fdopen(fd
, "w")))
97 (*Pw_error
)(tempname
, 1, 1);
100 "#Changing user %sdatabase information for %s.\n",
101 use_yp
? "YP " : "", pw
->pw_name
);
103 (void)fprintf(fp
, "Login: %s\n", pw
->pw_name
);
104 (void)fprintf(fp
, "Password: %s\n", pw
->pw_passwd
);
105 (void)fprintf(fp
, "Uid [#]: %d\n", pw
->pw_uid
);
106 (void)fprintf(fp
, "Gid [# or name]: %d\n", pw
->pw_gid
);
107 (void)fprintf(fp
, "Change [month day year]: %s\n",
108 ttoa(chgstr
, sizeof chgstr
, pw
->pw_change
));
109 (void)fprintf(fp
, "Expire [month day year]: %s\n",
110 ttoa(expstr
, sizeof expstr
, pw
->pw_expire
));
111 (void)fprintf(fp
, "Class: %s\n", pw
->pw_class
);
112 (void)fprintf(fp
, "Home directory: %s\n", pw
->pw_dir
);
113 (void)fprintf(fp
, "Shell: %s\n",
114 *pw
->pw_shell
? pw
->pw_shell
: _PATH_BSHELL
);
116 /* Only admin can change "restricted" shells. */
117 else if (ok_shell(pw
->pw_shell
))
119 * Make shell a restricted field. Ugly with a
120 * necklace, but there's not much else to do.
122 (void)fprintf(fp
, "Shell: %s\n",
123 *pw
->pw_shell
? pw
->pw_shell
: _PATH_BSHELL
);
125 list
[E_SHELL
].restricted
= 1;
126 bp
= strdup(pw
->pw_gecos
);
131 p
= strsep(&bp
, ",");
132 (void)fprintf(fp
, "Full Name: %s\n", p
? p
: "");
133 p
= strsep(&bp
, ",");
134 (void)fprintf(fp
, "Location: %s\n", p
? p
: "");
135 p
= strsep(&bp
, ",");
136 (void)fprintf(fp
, "Office Phone: %s\n", p
? p
: "");
137 p
= strsep(&bp
, ",");
138 (void)fprintf(fp
, "Home Phone: %s\n", p
? p
: "");
140 (void)fchown(fd
, getuid(), getgid());
145 verify(char *tempname
, struct passwd
*pw
)
152 static char buf
[LINE_MAX
];
154 if ((fd
= open(tempname
, O_RDONLY
|O_NOFOLLOW
)) == -1 ||
155 (fp
= fdopen(fd
, "r")) == NULL
)
156 (*Pw_error
)(tempname
, 1, 1);
158 (*Pw_error
)(tempname
, 1, 1);
159 if (sb
.st_size
== 0 || sb
.st_nlink
!= 1) {
160 warnx("corrupted temporary file");
163 while (fgets(buf
, sizeof(buf
), fp
)) {
164 if (!buf
[0] || buf
[0] == '#')
166 if (!(p
= strchr(buf
, '\n'))) {
167 warnx("line too long");
171 for (ep
= list
;; ++ep
) {
173 warnx("unrecognized field");
176 if (!strncasecmp(buf
, ep
->prompt
, ep
->len
)) {
177 if (ep
->restricted
&& uid
) {
179 "you may not change the %s field",
183 if (!(p
= strchr(buf
, ':'))) {
184 warnx("line corrupted");
187 while (isspace((unsigned char)*++p
));
188 if (ep
->except
&& strpbrk(p
, ep
->except
)) {
190 "illegal character in the \"%s\" field",
194 if ((ep
->func
)(p
, pw
, ep
)) {
195 bad
: (void)fclose(fp
);
204 /* Build the gecos field. */
205 len
= strlen(list
[E_NAME
].save
) + strlen(list
[E_BPHONE
].save
) +
206 strlen(list
[E_HPHONE
].save
) + strlen(list
[E_LOCATE
].save
) + 4;
207 if (!(p
= malloc(len
)))
209 (void)snprintf(p
, len
, "%s,%s,%s,%s", list
[E_NAME
].save
,
210 list
[E_LOCATE
].save
, list
[E_BPHONE
].save
, list
[E_HPHONE
].save
);
213 if (snprintf(buf
, sizeof(buf
),
214 "%s:%s:%d:%d:%s:%lu:%lu:%s:%s:%s",
215 pw
->pw_name
, pw
->pw_passwd
, pw
->pw_uid
, pw
->pw_gid
, pw
->pw_class
,
216 (u_long
)pw
->pw_change
, (u_long
)pw
->pw_expire
, pw
->pw_gecos
,
217 pw
->pw_dir
, pw
->pw_shell
) >= (int)sizeof(buf
)) {
218 warnx("entries too long");
221 return (pw_scan(buf
, pw
, NULL
));