Annotation of src/usr.bin/passwd/passwd.c, Revision 1.15
1.15 ! deraadt 1: /* $OpenBSD: passwd.c,v 1.14 2002/05/10 06:52:03 hugh 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.
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
1.11 millert 43: /*static const char sccsid[] = "from: @(#)passwd.c 5.5 (Berkeley) 7/6/91";*/
1.15 ! deraadt 44: static const char rcsid[] = "$OpenBSD: passwd.c,v 1.14 2002/05/10 06:52:03 hugh Exp $";
1.1 deraadt 45: #endif /* not lint */
46:
47: #include <stdio.h>
48: #include <string.h>
49: #include <unistd.h>
1.12 millert 50: #include <err.h>
1.3 tholo 51: #ifdef KERBEROS
52: #include <kerberosIV/krb.h>
53: #endif
1.1 deraadt 54:
55: /*
56: * Note on configuration:
57: * Generally one would not use both Kerberos and YP
58: * to maintain passwords.
59: *
60: */
61:
62: int use_kerberos;
63: int use_yp;
64:
65: #ifdef YP
66: int force_yp;
67: #endif
68:
1.9 millert 69: extern int local_passwd(char *, int);
1.6 weingart 70: extern int yp_passwd(char *);
1.7 art 71: extern int krb_passwd(int, char **);
1.10 hin 72: extern int krb5_passwd(int, char **);
1.14 hugh 73: extern int _yp_check(char **);
1.15 ! deraadt 74: void usage(int retval);
1.6 weingart 75:
76: int
1.15 ! deraadt 77: main(int argc, char **argv)
1.1 deraadt 78: {
79: extern int optind;
1.15 ! deraadt 80: char *username;
1.13 mpech 81: int ch;
1.14 hugh 82: #ifdef YP
1.1 deraadt 83: int status = 0;
1.14 hugh 84: #endif
1.15 ! deraadt 85:
1.3 tholo 86: #if defined(KERBEROS) || defined(KERBEROS5)
87: extern char realm[];
1.1 deraadt 88:
1.3 tholo 89: if (krb_get_lrealm(realm,1) == KSUCCESS)
90: use_kerberos = 1;
1.1 deraadt 91: #endif
92: #ifdef YP
93: use_yp = _yp_check(NULL);
94: #endif
95:
1.6 weingart 96: /* Process args and options */
1.10 hin 97: while ((ch = getopt(argc, argv, "lykK")) != -1)
1.1 deraadt 98: switch (ch) {
99: case 'l': /* change local password file */
100: use_kerberos = 0;
101: use_yp = 0;
102: break;
103: case 'k': /* change Kerberos password */
1.10 hin 104: #if defined(KERBEROS)
1.1 deraadt 105: use_kerberos = 1;
106: use_yp = 0;
1.7 art 107: exit(krb_passwd(argc, argv));
1.1 deraadt 108: break;
109: #else
110: fprintf(stderr, "passwd: Kerberos not compiled in\n");
111: exit(1);
1.10 hin 112: #endif
113: case 'K':
114: #ifdef KRB5
115: /* Skip programname and '-K' option */
1.15 ! deraadt 116: argc -= 2;
! 117: argv += 2;
1.10 hin 118: exit(krb5_passwd(argc, argv));
1.15 ! deraadt 119: #else
1.10 hin 120: errx(1, "KerberosV support not enabled");
121: break;
1.1 deraadt 122: #endif
123: case 'y': /* change YP password */
124: #ifdef YP
125: if (!use_yp) {
126: fprintf(stderr, "passwd: YP not in use.\n");
127: exit(1);
128: }
129: use_kerberos = 0;
130: use_yp = 1;
131: force_yp = 1;
132: break;
133: #else
134: fprintf(stderr, "passwd: YP not compiled in\n");
135: exit(1);
136: #endif
137: default:
1.8 ericj 138: usage(1);
1.1 deraadt 139: }
140:
141: argc -= optind;
142: argv += optind;
143:
144: username = getlogin();
145: if (username == NULL) {
146: fprintf(stderr, "passwd: who are you ??\n");
147: exit(1);
148: }
1.15 ! deraadt 149:
! 150: switch (argc) {
1.1 deraadt 151: case 0:
152: break;
153: case 1:
154: #if defined(KERBEROS) || defined(KERBEROS5)
1.15 ! deraadt 155: if (use_kerberos && strcmp(argv[0], username)) {
! 156: (void)fprintf(stderr, "passwd: %s\n\t%s\n%s\n",
! 157: "to change another user's Kerberos password, do",
! 158: "\"passwd -k -u <user>\";",
! 159: "to change a user's local passwd, use \"passwd -l <user>\"");
! 160: exit(1);
! 161: }
1.1 deraadt 162: #endif
163: username = argv[0];
164: break;
165: default:
1.8 ericj 166: usage(1);
1.1 deraadt 167: }
168:
169: #if defined(KERBEROS) || defined(KERBEROS5)
1.15 ! deraadt 170: if (use_kerberos)
! 171: exit(krb_passwd(argc, argv));
1.1 deraadt 172: #endif
1.7 art 173:
1.1 deraadt 174: #ifdef YP
1.9 millert 175: if (force_yp || ((status = local_passwd(username, 0)) && use_yp))
1.1 deraadt 176: exit(yp_passwd(username));
177: exit(status);
178: #endif
1.9 millert 179: exit(local_passwd(username, 0));
1.1 deraadt 180: }
181:
1.6 weingart 182: void
1.15 ! deraadt 183: usage(int retval)
1.1 deraadt 184: {
1.15 ! deraadt 185: fprintf(stderr, "usage: passwd [-l] [-y] [-k [-n name] [-i instance] "
! 186: "[-r realm] [-u username[.instance][@realm]] [user]\n");
1.8 ericj 187: exit(retval);
1.1 deraadt 188: }
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