1 /*
2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user or with the express written consent of
8 * Sun Microsystems, Inc.
9 *
10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11 * WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13 *
14 * Sun RPC is provided with no support and without any obligation on the
15 * part of Sun Microsystems, Inc. to assist in its use, correction,
16 * modification or enhancement.
17 *
18 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20 * OR ANY PART THEREOF.
21 *
22 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23 * or profits or other special, indirect and consequential damages, even if
24 * Sun has been advised of the possibility of such damages.
25 *
26 * Sun Microsystems, Inc.
27 * 2550 Garcia Avenue
28 * Mountain View, California 94043
29 *
30 * @(#)secretkey.c 1.8 91/03/11 Copyr 1986 Sun Micro
31 * $FreeBSD: src/lib/librpcsvc/secretkey.c,v 1.3 2002/03/21 23:53:40 obrien Exp $
32 */
33
34 /*
35 * secretkey.c
36 * Copyright (C) 1986, Sun Microsystems, Inc.
37 */
38
39 /*
40 * Secret key lookup routines
41 */
42 #include <stdio.h>
43 #include <pwd.h>
44 #include <rpc/rpc.h>
45 #include <rpc/key_prot.h>
46 #include <rpcsvc/yp_prot.h>
47 #include <rpcsvc/ypclnt.h>
48 #include <string.h>
49
50 extern int xdecrypt(char *, char *);
51
52 /*
53 * Get somebody's encrypted secret key from the database, using the given
54 * passwd to decrypt it.
55 */
56 int
getsecretkey(char * netname,char * secretkey,char * passwd)57 getsecretkey(char *netname, char *secretkey, char *passwd)
58 {
59 char lookup[3 * HEXKEYBYTES];
60 char *p;
61
62 if (secretkey == NULL)
63 return (0);
64 if (!getpublicandprivatekey(netname, lookup))
65 return (0);
66 p = strchr(lookup, ':');
67 if (p == NULL) {
68 return (0);
69 }
70 p++;
71 if (!xdecrypt(p, passwd)) {
72 return (0);
73 }
74 if (memcmp(p, p + HEXKEYBYTES, KEYCHECKSUMSIZE) != 0) {
75 secretkey[0] = '\0';
76 return (1);
77 }
78 p[HEXKEYBYTES] = '\0';
79 strncpy(secretkey, p, HEXKEYBYTES);
80 secretkey[HEXKEYBYTES] = '\0';
81 return (1);
82 }
83