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15637ed4 RG |
1 | /* |
2 | * Copyright (c) 1987 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 | char copyright[] = | |
36 | "@(#) Copyright (c) 1987 Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)vipw.c 5.16 (Berkeley) 3/3/91"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | #include <sys/types.h> | |
45 | #include <sys/stat.h> | |
46 | #include <pwd.h> | |
47 | #include <stdio.h> | |
48 | #include <stdlib.h> | |
49 | #include <string.h> | |
50 | ||
51 | char *progname = "vipw"; | |
52 | char *tempname; | |
53 | ||
54 | main() | |
55 | { | |
56 | register int pfd, tfd; | |
57 | struct stat begin, end; | |
58 | ||
59 | pw_init(); | |
60 | pfd = pw_lock(); | |
61 | tfd = pw_tmp(); | |
62 | copyfile(pfd, tfd); | |
63 | (void)close(tfd); | |
64 | ||
65 | for (;;) { | |
66 | if (stat(tempname, &begin)) | |
67 | pw_error(tempname, 1, 1); | |
68 | pw_edit(0); | |
69 | if (stat(tempname, &end)) | |
70 | pw_error(tempname, 1, 1); | |
71 | if (begin.st_mtime == end.st_mtime) { | |
72 | (void)fprintf(stderr, "vipw: no changes made\n"); | |
73 | pw_error((char *)NULL, 0, 0); | |
74 | } | |
75 | if (pw_mkdb()) | |
76 | break; | |
77 | pw_prompt(); | |
78 | } | |
79 | exit(0); | |
80 | } | |
81 | ||
82 | copyfile(from, to) | |
83 | register int from, to; | |
84 | { | |
85 | register int nr, nw, off; | |
86 | char buf[8*1024]; | |
87 | ||
88 | while ((nr = read(from, buf, sizeof(buf))) > 0) | |
89 | for (off = 0; off < nr; nr -= nw, off += nw) | |
90 | if ((nw = write(to, buf + off, nr)) < 0) | |
91 | pw_error(tempname, 1, 1); | |
92 | if (nr < 0) | |
93 | pw_error(_PATH_MASTERPASSWD, 1, 1); | |
94 | } |