1 /*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #ifndef lint
35 static char sccsid[] = "@(#)pw_copy.c 5.3 (Berkeley) 5/2/91";
36 #endif /* not lint */
37
38 /*
39 * This module is used to copy the master password file, replacing a single
40 * record, by chpass(1) and passwd(1).
41 */
42
43 #include <pwd.h>
44 #include <stdio.h>
45 #include <string.h>
46
47 extern char *progname, *tempname;
48
pw_copy(ffd,tfd,pw)49 pw_copy(ffd, tfd, pw)
50 int ffd, tfd;
51 struct passwd *pw;
52 {
53 register FILE *from, *to;
54 register int done;
55 register char *p;
56 char buf[8192];
57
58 if (!(from = fdopen(ffd, "r")))
59 pw_error(_PATH_MASTERPASSWD, 1, 1);
60 if (!(to = fdopen(tfd, "w")))
61 pw_error(tempname, 1, 1);
62
63 for (done = 0; fgets(buf, sizeof(buf), from);) {
64 if (!index(buf, '\n')) {
65 (void)fprintf(stderr, "%s: %s: line too long\n",
66 progname, _PATH_MASTERPASSWD);
67 pw_error(NULL, 0, 1);
68 }
69 if (done) {
70 (void)fprintf(to, "%s", buf);
71 if (ferror(to))
72 goto err;
73 continue;
74 }
75 if (!(p = index(buf, ':'))) {
76 (void)fprintf(stderr, "%s: %s: corrupted entry\n",
77 progname, _PATH_MASTERPASSWD);
78 pw_error(NULL, 0, 1);
79 }
80 *p = '\0';
81 if (strcmp(buf, pw->pw_name)) {
82 *p = ':';
83 (void)fprintf(to, "%s", buf);
84 if (ferror(to))
85 goto err;
86 continue;
87 }
88 (void)fprintf(to, "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s\n",
89 pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid,
90 pw->pw_class, pw->pw_change, pw->pw_expire, pw->pw_gecos,
91 pw->pw_dir, pw->pw_shell);
92 done = 1;
93 if (ferror(to))
94 goto err;
95 }
96 if (!done)
97 (void)fprintf(to, "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s\n",
98 pw->pw_name, pw->pw_passwd, pw->pw_uid, pw->pw_gid,
99 pw->pw_class, pw->pw_change, pw->pw_expire, pw->pw_gecos,
100 pw->pw_dir, pw->pw_shell);
101
102 if (ferror(to))
103 err: pw_error(NULL, 1, 1);
104 (void)fclose(to);
105 }
106