Annotation of src/usr.bin/passwd/passwd.c, Revision 1.16
1.16 ! millert 1: /* $OpenBSD: passwd.c,v 1.15 2002/06/28 22:28:17 deraadt Exp $ */
1.4 deraadt 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.
1.16 ! millert 15: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
31:
32: #ifndef lint
33: char copyright[] =
34: "@(#) Copyright (c) 1988 The Regents of the University of California.\n\
35: All rights reserved.\n";
36: #endif /* not lint */
37:
38: #ifndef lint
1.11 millert 39: /*static const char sccsid[] = "from: @(#)passwd.c 5.5 (Berkeley) 7/6/91";*/
1.16 ! millert 40: static const char rcsid[] = "$OpenBSD: passwd.c,v 1.15 2002/06/28 22:28:17 deraadt Exp $";
1.1 deraadt 41: #endif /* not lint */
42:
43: #include <stdio.h>
44: #include <string.h>
45: #include <unistd.h>
1.12 millert 46: #include <err.h>
1.3 tholo 47: #ifdef KERBEROS
48: #include <kerberosIV/krb.h>
49: #endif
1.1 deraadt 50:
51: /*
52: * Note on configuration:
53: * Generally one would not use both Kerberos and YP
54: * to maintain passwords.
55: *
56: */
57:
58: int use_kerberos;
59: int use_yp;
60:
61: #ifdef YP
62: int force_yp;
63: #endif
64:
1.9 millert 65: extern int local_passwd(char *, int);
1.6 weingart 66: extern int yp_passwd(char *);
1.7 art 67: extern int krb_passwd(int, char **);
1.10 hin 68: extern int krb5_passwd(int, char **);
1.14 hugh 69: extern int _yp_check(char **);
1.15 deraadt 70: void usage(int retval);
1.6 weingart 71:
72: int
1.15 deraadt 73: main(int argc, char **argv)
1.1 deraadt 74: {
75: extern int optind;
1.15 deraadt 76: char *username;
1.13 mpech 77: int ch;
1.14 hugh 78: #ifdef YP
1.1 deraadt 79: int status = 0;
1.14 hugh 80: #endif
1.15 deraadt 81:
1.3 tholo 82: #if defined(KERBEROS) || defined(KERBEROS5)
83: extern char realm[];
1.1 deraadt 84:
1.3 tholo 85: if (krb_get_lrealm(realm,1) == KSUCCESS)
86: use_kerberos = 1;
1.1 deraadt 87: #endif
88: #ifdef YP
89: use_yp = _yp_check(NULL);
90: #endif
91:
1.6 weingart 92: /* Process args and options */
1.10 hin 93: while ((ch = getopt(argc, argv, "lykK")) != -1)
1.1 deraadt 94: switch (ch) {
95: case 'l': /* change local password file */
96: use_kerberos = 0;
97: use_yp = 0;
98: break;
99: case 'k': /* change Kerberos password */
1.10 hin 100: #if defined(KERBEROS)
1.1 deraadt 101: use_kerberos = 1;
102: use_yp = 0;
1.7 art 103: exit(krb_passwd(argc, argv));
1.1 deraadt 104: break;
105: #else
106: fprintf(stderr, "passwd: Kerberos not compiled in\n");
107: exit(1);
1.10 hin 108: #endif
109: case 'K':
110: #ifdef KRB5
111: /* Skip programname and '-K' option */
1.15 deraadt 112: argc -= 2;
113: argv += 2;
1.10 hin 114: exit(krb5_passwd(argc, argv));
1.15 deraadt 115: #else
1.10 hin 116: errx(1, "KerberosV support not enabled");
117: break;
1.1 deraadt 118: #endif
119: case 'y': /* change YP password */
120: #ifdef YP
121: if (!use_yp) {
122: fprintf(stderr, "passwd: YP not in use.\n");
123: exit(1);
124: }
125: use_kerberos = 0;
126: use_yp = 1;
127: force_yp = 1;
128: break;
129: #else
130: fprintf(stderr, "passwd: YP not compiled in\n");
131: exit(1);
132: #endif
133: default:
1.8 ericj 134: usage(1);
1.1 deraadt 135: }
136:
137: argc -= optind;
138: argv += optind;
139:
140: username = getlogin();
141: if (username == NULL) {
142: fprintf(stderr, "passwd: who are you ??\n");
143: exit(1);
144: }
1.15 deraadt 145:
146: switch (argc) {
1.1 deraadt 147: case 0:
148: break;
149: case 1:
150: #if defined(KERBEROS) || defined(KERBEROS5)
1.15 deraadt 151: if (use_kerberos && strcmp(argv[0], username)) {
152: (void)fprintf(stderr, "passwd: %s\n\t%s\n%s\n",
153: "to change another user's Kerberos password, do",
154: "\"passwd -k -u <user>\";",
155: "to change a user's local passwd, use \"passwd -l <user>\"");
156: exit(1);
157: }
1.1 deraadt 158: #endif
159: username = argv[0];
160: break;
161: default:
1.8 ericj 162: usage(1);
1.1 deraadt 163: }
164:
165: #if defined(KERBEROS) || defined(KERBEROS5)
1.15 deraadt 166: if (use_kerberos)
167: exit(krb_passwd(argc, argv));
1.1 deraadt 168: #endif
1.7 art 169:
1.1 deraadt 170: #ifdef YP
1.9 millert 171: if (force_yp || ((status = local_passwd(username, 0)) && use_yp))
1.1 deraadt 172: exit(yp_passwd(username));
173: exit(status);
174: #endif
1.9 millert 175: exit(local_passwd(username, 0));
1.1 deraadt 176: }
177:
1.6 weingart 178: void
1.15 deraadt 179: usage(int retval)
1.1 deraadt 180: {
1.15 deraadt 181: fprintf(stderr, "usage: passwd [-l] [-y] [-k [-n name] [-i instance] "
182: "[-r realm] [-u username[.instance][@realm]] [user]\n");
1.8 ericj 183: exit(retval);
1.1 deraadt 184: }
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