Annotation of src/usr.bin/passwd/passwd.c, Revision 1.19
1.19 ! deraadt 1: /* $OpenBSD: passwd.c,v 1.18 2003/08/04 07:29:22 hin 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";*/
1.19 ! deraadt 40: static const char rcsid[] = "$OpenBSD: passwd.c,v 1.18 2003/08/04 07:29:22 hin Exp $";
1.1 deraadt 41: #endif /* not lint */
42:
43: #include <stdio.h>
1.17 david 44: #include <stdlib.h>
1.1 deraadt 45: #include <string.h>
46: #include <unistd.h>
1.12 millert 47: #include <err.h>
1.1 deraadt 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:
1.9 millert 63: extern int local_passwd(char *, int);
1.6 weingart 64: extern int yp_passwd(char *);
1.10 hin 65: extern int krb5_passwd(int, char **);
1.14 hugh 66: extern int _yp_check(char **);
1.15 deraadt 67: void usage(int retval);
1.6 weingart 68:
69: int
1.15 deraadt 70: main(int argc, char **argv)
1.1 deraadt 71: {
72: extern int optind;
1.15 deraadt 73: char *username;
1.13 mpech 74: int ch;
1.14 hugh 75: #ifdef YP
1.1 deraadt 76: int status = 0;
1.14 hugh 77: #endif
1.15 deraadt 78:
1.18 hin 79: #if defined(KERBEROS5)
1.3 tholo 80: extern char realm[];
1.1 deraadt 81:
1.3 tholo 82: if (krb_get_lrealm(realm,1) == KSUCCESS)
83: use_kerberos = 1;
1.1 deraadt 84: #endif
85: #ifdef YP
86: use_yp = _yp_check(NULL);
1.19 ! deraadt 87: if (use_yp) {
! 88: char *dom;
! 89:
! 90: yp_get_default_domain(&dom);
! 91: yp_unbind(dom);
! 92: }
1.1 deraadt 93: #endif
94:
1.6 weingart 95: /* Process args and options */
1.18 hin 96: while ((ch = getopt(argc, argv, "lyK")) != -1)
1.1 deraadt 97: switch (ch) {
98: case 'l': /* change local password file */
99: use_kerberos = 0;
100: use_yp = 0;
101: break;
1.10 hin 102: case 'K':
103: #ifdef KRB5
104: /* Skip programname and '-K' option */
1.15 deraadt 105: argc -= 2;
106: argv += 2;
1.10 hin 107: exit(krb5_passwd(argc, argv));
1.15 deraadt 108: #else
1.10 hin 109: errx(1, "KerberosV support not enabled");
110: break;
1.1 deraadt 111: #endif
112: case 'y': /* change YP password */
113: #ifdef YP
114: if (!use_yp) {
115: fprintf(stderr, "passwd: YP not in use.\n");
116: exit(1);
117: }
118: use_kerberos = 0;
119: use_yp = 1;
120: force_yp = 1;
121: break;
122: #else
123: fprintf(stderr, "passwd: YP not compiled in\n");
124: exit(1);
125: #endif
126: default:
1.8 ericj 127: usage(1);
1.1 deraadt 128: }
129:
130: argc -= optind;
131: argv += optind;
132:
133: username = getlogin();
134: if (username == NULL) {
135: fprintf(stderr, "passwd: who are you ??\n");
136: exit(1);
137: }
1.15 deraadt 138:
139: switch (argc) {
1.1 deraadt 140: case 0:
141: break;
142: case 1:
1.18 hin 143: #if defined(KERBEROS5)
1.15 deraadt 144: if (use_kerberos && strcmp(argv[0], username)) {
145: (void)fprintf(stderr, "passwd: %s\n\t%s\n%s\n",
146: "to change another user's Kerberos password, do",
1.18 hin 147: "\"passwd -K -u <user>\";",
1.15 deraadt 148: "to change a user's local passwd, use \"passwd -l <user>\"");
149: exit(1);
150: }
1.1 deraadt 151: #endif
152: username = argv[0];
153: break;
154: default:
1.8 ericj 155: usage(1);
1.1 deraadt 156: }
1.7 art 157:
1.1 deraadt 158: #ifdef YP
1.9 millert 159: if (force_yp || ((status = local_passwd(username, 0)) && use_yp))
1.1 deraadt 160: exit(yp_passwd(username));
161: exit(status);
162: #endif
1.9 millert 163: exit(local_passwd(username, 0));
1.1 deraadt 164: }
165:
1.6 weingart 166: void
1.15 deraadt 167: usage(int retval)
1.1 deraadt 168: {
1.15 deraadt 169: fprintf(stderr, "usage: passwd [-l] [-y] [-k [-n name] [-i instance] "
170: "[-r realm] [-u username[.instance][@realm]] [user]\n");
1.8 ericj 171: exit(retval);
1.1 deraadt 172: }
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