Annotation of src/usr.bin/passwd/passwd.c, Revision 1.2
1.1 deraadt 1: /*
2: * Copyright (c) 1988 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: char copyright[] =
36: "@(#) Copyright (c) 1988 The Regents of the University of California.\n\
37: All rights reserved.\n";
38: #endif /* not lint */
39:
40: #ifndef lint
41: /*static char sccsid[] = "from: @(#)passwd.c 5.5 (Berkeley) 7/6/91";*/
1.2 ! deraadt 42: static char rcsid[] = "$Id: passwd.c,v 1.1.1.1 1995/10/18 08:45:54 deraadt Exp $";
1.1 deraadt 43: #endif /* not lint */
44:
45: #include <stdio.h>
46: #include <string.h>
47: #include <unistd.h>
48:
49: /*
50: * Note on configuration:
51: * Generally one would not use both Kerberos and YP
52: * to maintain passwords.
53: *
54: */
55:
56: int use_kerberos;
57: int use_yp;
58:
59: #ifdef YP
60: int force_yp;
61: #endif
62:
63: main(argc, argv)
64: int argc;
65: char **argv;
66: {
67: extern int optind;
68: register int ch;
69: char *username;
70: int status = 0;
71: char *basename;
72:
73: #if defined(KERBEROS) || defined(KERBEROS5)
74: use_kerberos = 1;
75: #endif
76: #ifdef YP
77: use_yp = _yp_check(NULL);
78: #endif
79:
80: basename = strrchr(argv[0], '/');
81: if (basename == NULL)
82: basename = argv[0];
83:
84: while ((ch = getopt(argc, argv, "lky")) != EOF)
85: switch (ch) {
86: case 'l': /* change local password file */
87: use_kerberos = 0;
88: use_yp = 0;
89: break;
90: case 'k': /* change Kerberos password */
91: #if defined(KERBEROS) || defined(KERBEROS5)
92: use_kerberos = 1;
93: use_yp = 0;
94: break;
95: #else
96: fprintf(stderr, "passwd: Kerberos not compiled in\n");
97: exit(1);
98: #endif
99: case 'y': /* change YP password */
100: #ifdef YP
101: if (!use_yp) {
102: fprintf(stderr, "passwd: YP not in use.\n");
103: exit(1);
104: }
105: use_kerberos = 0;
106: use_yp = 1;
107: force_yp = 1;
108: break;
109: #else
110: fprintf(stderr, "passwd: YP not compiled in\n");
111: exit(1);
112: #endif
113: default:
114: usage();
115: exit(1);
116: }
117:
118: argc -= optind;
119: argv += optind;
120:
121: username = getlogin();
122: if (username == NULL) {
123: fprintf(stderr, "passwd: who are you ??\n");
124: exit(1);
125: }
126:
127: switch(argc) {
128: case 0:
129: break;
130: case 1:
131: #if defined(KERBEROS) || defined(KERBEROS5)
132: if (use_kerberos && strcmp(argv[0], username)) {
133: (void)fprintf(stderr, "passwd: %s\n\t%s\n%s\n",
134: "to change another user's Kerberos password, do",
135: "\"kinit <user>; passwd; kdestroy\";",
136: "to change a user's local passwd, use \"passwd -l <user>\"");
137: exit(1);
138: }
139: #endif
140: username = argv[0];
141: break;
142: default:
143: usage();
144: exit(1);
145: }
146:
147: #if defined(KERBEROS) || defined(KERBEROS5)
148: if (use_kerberos)
149: exit(krb_passwd());
150: #endif
151: #ifdef YP
152: if (force_yp || ((status = local_passwd(username)) && use_yp))
153: exit(yp_passwd(username));
154: exit(status);
155: #endif
156: exit(local_passwd(username));
157: }
158:
159: usage()
160: {
161: fprintf(stderr, "usage: passwd [-l] [-k] [-y] user\n");
162: }
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