xref: /freebsd/lib/libc/rpc/crypt_client.c (revision c697fb7f)
1 /*-
2  * SPDX-License-Identifier: BSD-4-Clause
3  *
4  * Copyright (c) 1996
5  *	Bill Paul <wpaul@ctr.columbia.edu>.  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 Bill Paul.
18  * 4. Neither the name of the author nor the names of any co-contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  */
34 
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37 
38 #include "namespace.h"
39 #include <err.h>
40 #include <sys/types.h>
41 #include <rpc/des_crypt.h>
42 #include <rpc/des.h>
43 #include <string.h>
44 #include <rpcsvc/crypt.h>
45 #include "un-namespace.h"
46 
47 int
48 _des_crypt_call(char *buf, int len, struct desparams *dparms)
49 {
50 	CLIENT *clnt;
51 	desresp  *result_1;
52 	desargs  des_crypt_1_arg;
53 	struct netconfig *nconf;
54 	void *localhandle;
55 	int stat;
56 
57 	nconf = NULL;
58 	localhandle = setnetconfig();
59 	while ((nconf = getnetconfig(localhandle)) != NULL) {
60 		if (nconf->nc_protofmly != NULL &&
61 		     strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0)
62 			break;
63 	}
64 	if (nconf == NULL) {
65 		warnx("getnetconfig: %s", nc_sperror());
66 		endnetconfig(localhandle);
67 		return(DESERR_HWERROR);
68 	}
69 	clnt = clnt_tp_create(NULL, CRYPT_PROG, CRYPT_VERS, nconf);
70 	if (clnt == (CLIENT *) NULL) {
71 		endnetconfig(localhandle);
72 		return(DESERR_HWERROR);
73 	}
74 	endnetconfig(localhandle);
75 
76 	des_crypt_1_arg.desbuf.desbuf_len = len;
77 	des_crypt_1_arg.desbuf.desbuf_val = buf;
78 	des_crypt_1_arg.des_dir = (dparms->des_dir == ENCRYPT) ? ENCRYPT_DES : DECRYPT_DES;
79 	des_crypt_1_arg.des_mode = (dparms->des_mode == CBC) ? CBC_DES : ECB_DES;
80 	bcopy(dparms->des_ivec, des_crypt_1_arg.des_ivec, 8);
81 	bcopy(dparms->des_key, des_crypt_1_arg.des_key, 8);
82 
83 	result_1 = des_crypt_1(&des_crypt_1_arg, clnt);
84 	if (result_1 == (desresp *) NULL) {
85 		clnt_destroy(clnt);
86 		return(DESERR_HWERROR);
87 	}
88 
89 	stat = result_1->stat;
90 
91 	if (result_1->stat == DESERR_NONE ||
92 	    result_1->stat == DESERR_NOHWDEVICE) {
93 		bcopy(result_1->desbuf.desbuf_val, buf, len);
94 		bcopy(result_1->des_ivec, dparms->des_ivec, 8);
95 	}
96 
97 	clnt_freeres(clnt, (xdrproc_t)xdr_desresp, result_1);
98 	clnt_destroy(clnt);
99 
100 	return(stat);
101 }
102