Annotation of src/usr.bin/skeyinfo/skeyinfo.c, Revision 1.3
1.3 ! millert 1: /* $OpenBSD: skeyinfo.c,v 1.2 1997/07/23 04:14:46 millert Exp $ */
1.1 millert 2:
3: /*
4: * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
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. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by Todd C. Miller.
18: * 4. The name of the author may not be used to endorse or promote products
19: * derived from this software without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
22: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
23: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
24: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
30: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31: */
32:
33: #include <err.h>
34: #include <limits.h>
35: #include <paths.h>
36: #include <pwd.h>
37: #include <stdio.h>
38: #include <stdlib.h>
39: #include <string.h>
40: #include <unistd.h>
41: #include <skey.h>
42:
43: extern char *__progname;
44:
45: void usage __P((void));
46:
47: int
48: main(argc, argv)
49: int argc;
50: char **argv;
51: {
52: struct passwd *pw;
53: struct skey key;
54: char *name = NULL;
55: int errs, ch, verbose = 0;
56:
57: if (geteuid() != 0)
58: errx(1, "must be setuid root");
59:
60: while ((ch = getopt(argc, argv, "v")) != -1)
61: switch(ch) {
62: case 'v':
63: verbose = 1;
64: break;
65: default:
66: usage();
67: }
68: argc -= optind;
69: argv += optind;
70:
71: if (argc == 1)
72: name = argv[0];
73: else if (argc > 1)
74: usage();
75:
76: if (name && getuid() != 0)
77: errx(1, "only root may specify an alternate user");
78:
79: if (name) {
80: if (strlen(name) > PASS_MAX)
81: errx(1, "username too long (%d chars max)", PASS_MAX);
82: if ((pw = getpwnam(name)) == NULL)
83: errx(1, "no passwd entry for %s", name);
84: } else {
85: if ((pw = getpwuid(getuid())) == NULL)
86: errx(1, "no passwd entry for uid %u", getuid());
87: }
88:
89: if ((name = strdup(pw->pw_name)) == NULL)
90: err(1, "cannot allocate memory");
91: sevenbit(name);
92:
93: errs = skeylookup(&key, name);
94: switch (errs) {
95: case 0: /* Success! */
96: if (verbose)
97: (void)printf("otp-%s ", skey_get_algorithm());
98: (void)printf("%d %s\n", key.n - 1, key.seed);
99: break;
100: case -1: /* File error */
101: /* XXX - _PATH_SKEYFILE should be in paths.h? */
102: warnx("cannot open /etc/skeykeys");
103: break;
104: case 1: /* Unknown user */
105: warnx("%s is not listed in /etc/skeykeys", name);
106: }
1.3 ! millert 107: (void)fclose(mp->keyfile);
1.1 millert 108:
1.2 millert 109: exit(errs);
1.1 millert 110: }
111:
112: void
113: usage()
114: {
115: (void)fprintf(stderr, "Usage: %s [-v] [user]\n", __progname);
116: exit(1);
117: }