Annotation of src/usr.bin/passwd/passwd.c, Revision 1.4
1.4 ! deraadt 1: /* $OpenBSD$ */
! 2:
1.1 deraadt 3: /*
4: * Copyright (c) 1988 The Regents of the University of California.
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 the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef lint
37: char copyright[] =
38: "@(#) Copyright (c) 1988 The Regents of the University of California.\n\
39: All rights reserved.\n";
40: #endif /* not lint */
41:
42: #ifndef lint
43: /*static char sccsid[] = "from: @(#)passwd.c 5.5 (Berkeley) 7/6/91";*/
1.4 ! deraadt 44: static char rcsid[] = "$OpenBSD: passwd.c,v 1.3 1996/05/03 18:23:34 tholo Exp $";
1.1 deraadt 45: #endif /* not lint */
46:
47: #include <stdio.h>
48: #include <string.h>
49: #include <unistd.h>
1.3 tholo 50: #ifdef KERBEROS
51: #include <kerberosIV/krb.h>
52: #endif
1.1 deraadt 53:
54: /*
55: * Note on configuration:
56: * Generally one would not use both Kerberos and YP
57: * to maintain passwords.
58: *
59: */
60:
61: int use_kerberos;
62: int use_yp;
63:
64: #ifdef YP
65: int force_yp;
66: #endif
67:
68: main(argc, argv)
69: int argc;
70: char **argv;
71: {
72: extern int optind;
73: register int ch;
74: char *username;
75: int status = 0;
76: char *basename;
1.3 tholo 77: #if defined(KERBEROS) || defined(KERBEROS5)
78: extern char realm[];
1.1 deraadt 79:
1.3 tholo 80: if (krb_get_lrealm(realm,1) == KSUCCESS)
81: use_kerberos = 1;
1.1 deraadt 82: #endif
83: #ifdef YP
84: use_yp = _yp_check(NULL);
85: #endif
86:
87: basename = strrchr(argv[0], '/');
88: if (basename == NULL)
89: basename = argv[0];
90:
91: while ((ch = getopt(argc, argv, "lky")) != EOF)
92: switch (ch) {
93: case 'l': /* change local password file */
94: use_kerberos = 0;
95: use_yp = 0;
96: break;
97: case 'k': /* change Kerberos password */
98: #if defined(KERBEROS) || defined(KERBEROS5)
99: use_kerberos = 1;
100: use_yp = 0;
101: break;
102: #else
103: fprintf(stderr, "passwd: Kerberos not compiled in\n");
104: exit(1);
105: #endif
106: case 'y': /* change YP password */
107: #ifdef YP
108: if (!use_yp) {
109: fprintf(stderr, "passwd: YP not in use.\n");
110: exit(1);
111: }
112: use_kerberos = 0;
113: use_yp = 1;
114: force_yp = 1;
115: break;
116: #else
117: fprintf(stderr, "passwd: YP not compiled in\n");
118: exit(1);
119: #endif
120: default:
121: usage();
122: exit(1);
123: }
124:
125: argc -= optind;
126: argv += optind;
127:
128: username = getlogin();
129: if (username == NULL) {
130: fprintf(stderr, "passwd: who are you ??\n");
131: exit(1);
132: }
133:
134: switch(argc) {
135: case 0:
136: break;
137: case 1:
138: #if defined(KERBEROS) || defined(KERBEROS5)
139: if (use_kerberos && strcmp(argv[0], username)) {
140: (void)fprintf(stderr, "passwd: %s\n\t%s\n%s\n",
141: "to change another user's Kerberos password, do",
142: "\"kinit <user>; passwd; kdestroy\";",
143: "to change a user's local passwd, use \"passwd -l <user>\"");
144: exit(1);
145: }
146: #endif
147: username = argv[0];
148: break;
149: default:
150: usage();
151: exit(1);
152: }
153:
154: #if defined(KERBEROS) || defined(KERBEROS5)
155: if (use_kerberos)
156: exit(krb_passwd());
157: #endif
158: #ifdef YP
159: if (force_yp || ((status = local_passwd(username)) && use_yp))
160: exit(yp_passwd(username));
161: exit(status);
162: #endif
163: exit(local_passwd(username));
164: }
165:
166: usage()
167: {
168: fprintf(stderr, "usage: passwd [-l] [-k] [-y] user\n");
169: }
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