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.
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
25 * Sun Microsystems, Inc.
27 * Mountain View, California 94043
29 * @(#)keyserv.c 1.15 94/04/25 SMI
30 * $FreeBSD: src/usr.sbin/keyserv/keyserv.c,v 1.12 2007/11/07 10:53:35 kevlo Exp $
34 * Copyright (c) 1986 - 1991 by Sun Microsystems, Inc.
39 * Store secret keys per uid. Do public key encryption and decryption
40 * operations. Generate "random" keys.
41 * Do not talk to anything but a local root
42 * process on the local transport only
52 #include <sys/types.h>
54 #include <sys/param.h>
56 #include <rpc/des_crypt.h>
58 #include <rpc/key_prot.h>
59 #include <rpcsvc/crypt.h>
67 #define KEYSERVSOCK "/var/run/keyservsock"
70 static void randomize( des_block * );
71 static void usage( void );
72 static int getrootkey( des_block *, int );
73 static int root_auth( SVCXPRT *, struct svc_req * );
76 static int debugging = 1;
78 static int debugging = 0;
81 static void keyprogram();
82 static des_block masterkey;
84 static char ROOTKEY[] = "/etc/.rootkey";
87 * Hack to allow the keyserver to use AUTH_DES (for authenticated
88 * NIS+ calls, for example). The only functions that get called
89 * are key_encryptsession_pk, key_decryptsession_pk, and key_gendes.
91 * The approach is to have the keyserver fill in pointers to local
92 * implementations of these functions, and to call those in key_call().
95 extern cryptkeyres *(*__key_encryptsession_pk_LOCAL)();
96 extern cryptkeyres *(*__key_decryptsession_pk_LOCAL)();
97 extern des_block *(*__key_gendes_LOCAL)();
98 extern int (*__des_crypt_LOCAL)();
100 cryptkeyres *key_encrypt_pk_2_svc_prog( uid_t, cryptkeyarg2 * );
101 cryptkeyres *key_decrypt_pk_2_svc_prog( uid_t, cryptkeyarg2 * );
102 des_block *key_gen_1_svc_prog( void *, struct svc_req * );
105 main(int argc, char **argv)
113 struct netconfig *nconf = NULL;
115 __key_encryptsession_pk_LOCAL = &key_encrypt_pk_2_svc_prog;
116 __key_decryptsession_pk_LOCAL = &key_decrypt_pk_2_svc_prog;
117 __key_gendes_LOCAL = &key_gen_1_svc_prog;
119 while ((c = getopt(argc, argv, "ndDvp:")) != -1)
140 load_des(warn, path);
141 __des_crypt_LOCAL = _my_crypt;
142 if (svc_auth_reg(AUTH_DES, _svcauth_des) == -1)
143 errx(1, "failed to register AUTH_DES authenticator");
145 if (optind != argc) {
152 umask(S_IXUSR|S_IXGRP|S_IXOTH);
154 errx(1, "keyserv must be run as root");
155 setmodulus(HEXMODULUS);
156 getrootkey(&masterkey, nflag);
158 rpcb_unset(KEY_PROG, KEY_VERS, NULL);
159 rpcb_unset(KEY_PROG, KEY_VERS2, NULL);
161 if (svc_create(keyprogram, KEY_PROG, KEY_VERS,
163 fprintf(stderr, "%s: unable to create service\n", argv[0]);
167 if (svc_create(keyprogram, KEY_PROG, KEY_VERS2,
169 fprintf(stderr, "%s: unable to create service\n", argv[0]);
173 localhandle = setnetconfig();
174 while ((nconf = getnetconfig(localhandle)) != NULL) {
175 if (nconf->nc_protofmly != NULL &&
176 strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0)
181 errx(1, "getnetconfig: %s", nc_sperror());
184 rpcb_unset(CRYPT_PROG, CRYPT_VERS, nconf);
185 transp = svcunix_create(RPC_ANYSOCK, 0, 0, KEYSERVSOCK);
187 errx(1, "cannot create AF_LOCAL service");
188 if (!svc_reg(transp, KEY_PROG, KEY_VERS, keyprogram, nconf))
189 errx(1, "unable to register (KEY_PROG, KEY_VERS, unix)");
190 if (!svc_reg(transp, KEY_PROG, KEY_VERS2, keyprogram, nconf))
191 errx(1, "unable to register (KEY_PROG, KEY_VERS2, unix)");
192 if (!svc_reg(transp, CRYPT_PROG, CRYPT_VERS, crypt_prog_1, nconf))
193 errx(1, "unable to register (CRYPT_PROG, CRYPT_VERS, unix)");
195 endnetconfig(localhandle);
197 umask(066); /* paranoia */
203 signal(SIGPIPE, SIG_IGN);
211 * In the event that we don't get a root password, we try to
212 * randomize the master key the best we can
215 randomize(des_block *master)
217 #ifdef KEYSERV_RANDOM
218 master->key.low = arc4random();
219 master->key.high = arc4random();
221 /* use stupid dangerous bad rand() */
223 master->key.low = rand();
224 master->key.high = rand();
229 * Try to get root's secret key, by prompting if terminal is a tty, else trying
230 * from standard input.
231 * Returns 1 on success.
234 getrootkey(des_block *master, int prompt)
237 char name[MAXNETNAMELEN + 1];
238 char secret[HEXKEYBYTES];
239 key_netstarg netstore;
244 * Read secret key out of ROOTKEY
246 fd = open(ROOTKEY, O_RDONLY, 0);
251 if (read(fd, secret, HEXKEYBYTES) < HEXKEYBYTES) {
252 warnx("the key read from %s was too short", ROOTKEY);
257 if (!getnetname(name)) {
259 "failed to generate host's netname when establishing root's key");
262 memcpy(netstore.st_priv_key, secret, HEXKEYBYTES);
263 memset(netstore.st_pub_key, 0, HEXKEYBYTES);
264 netstore.st_netname = name;
265 if (pk_netput(0, &netstore) != KEY_SUCCESS) {
266 warnx("could not set root's key and netname");
272 * Decrypt yellow pages publickey entry to get secret key
274 passwd = getpass("root password:");
275 passwd2des(passwd, (char *)master);
277 if (!getsecretkey(name, secret, passwd)) {
278 warnx("can't find %s's secret key", name);
281 if (secret[0] == 0) {
282 warnx("password does not decrypt secret key for %s", name);
285 pk_setkey(0, secret);
287 * Store it for future use in $ROOTKEY, if possible
289 fd = open(ROOTKEY, O_WRONLY|O_TRUNC|O_CREAT, 0);
293 write(fd, secret, strlen(secret));
294 write(fd, &newline, sizeof (newline));
301 * Procedures to implement RPC service
304 strstatus(keystatus status)
308 return ("KEY_SUCCESS");
310 return ("KEY_NOSECRET");
312 return ("KEY_UNKNOWN");
314 return ("KEY_SYSTEMERR");
316 return ("(bad result code)");
321 key_set_1_svc_prog(uid_t uid, keybuf key)
323 static keystatus status;
326 fprintf(stderr, "set(%ld, %.*s) = ", uid,
327 (int) sizeof (keybuf), key);
329 status = pk_setkey(uid, key);
331 fprintf(stderr, "%s\n", strstatus(status));
338 key_encrypt_pk_2_svc_prog(uid_t uid, cryptkeyarg2 *arg)
340 static cryptkeyres res;
343 fprintf(stderr, "encrypt(%ld, %s, %08x%08x) = ", uid,
344 arg->remotename, arg->deskey.key.high,
345 arg->deskey.key.low);
347 res.cryptkeyres_u.deskey = arg->deskey;
348 res.status = pk_encrypt(uid, arg->remotename, &(arg->remotekey),
349 &res.cryptkeyres_u.deskey);
351 if (res.status == KEY_SUCCESS) {
352 fprintf(stderr, "%08x%08x\n",
353 res.cryptkeyres_u.deskey.key.high,
354 res.cryptkeyres_u.deskey.key.low);
356 fprintf(stderr, "%s\n", strstatus(res.status));
364 key_decrypt_pk_2_svc_prog(uid_t uid, cryptkeyarg2 *arg)
366 static cryptkeyres res;
369 fprintf(stderr, "decrypt(%ld, %s, %08x%08x) = ", uid,
370 arg->remotename, arg->deskey.key.high,
371 arg->deskey.key.low);
373 res.cryptkeyres_u.deskey = arg->deskey;
374 res.status = pk_decrypt(uid, arg->remotename, &(arg->remotekey),
375 &res.cryptkeyres_u.deskey);
377 if (res.status == KEY_SUCCESS) {
378 fprintf(stderr, "%08x%08x\n",
379 res.cryptkeyres_u.deskey.key.high,
380 res.cryptkeyres_u.deskey.key.low);
382 fprintf(stderr, "%s\n", strstatus(res.status));
390 key_net_put_2_svc_prog(uid_t uid, key_netstarg *arg)
392 static keystatus status;
395 fprintf(stderr, "net_put(%s, %.*s, %.*s) = ",
396 arg->st_netname, (int)sizeof (arg->st_pub_key),
397 arg->st_pub_key, (int)sizeof (arg->st_priv_key),
401 status = pk_netput(uid, arg);
404 fprintf(stderr, "%s\n", strstatus(status));
412 key_net_get_2_svc_prog(uid_t uid, void *arg)
414 static key_netstres keynetname;
417 fprintf(stderr, "net_get(%ld) = ", uid);
419 keynetname.status = pk_netget(uid, &keynetname.key_netstres_u.knet);
421 if (keynetname.status == KEY_SUCCESS) {
422 fprintf(stderr, "<%s, %.*s, %.*s>\n",
423 keynetname.key_netstres_u.knet.st_netname,
424 (int)sizeof (keynetname.key_netstres_u.knet.st_pub_key),
425 keynetname.key_netstres_u.knet.st_pub_key,
426 (int)sizeof (keynetname.key_netstres_u.knet.st_priv_key),
427 keynetname.key_netstres_u.knet.st_priv_key);
429 fprintf(stderr, "NOT FOUND\n");
434 return (&keynetname);
439 key_get_conv_2_svc_prog(uid_t uid, keybuf arg)
441 static cryptkeyres res;
444 fprintf(stderr, "get_conv(%ld, %.*s) = ", uid,
445 (int)sizeof (arg), arg);
448 res.status = pk_get_conv_key(uid, arg, &res);
451 if (res.status == KEY_SUCCESS) {
452 fprintf(stderr, "%08x%08x\n",
453 res.cryptkeyres_u.deskey.key.high,
454 res.cryptkeyres_u.deskey.key.low);
456 fprintf(stderr, "%s\n", strstatus(res.status));
465 key_encrypt_1_svc_prog(uid_t uid, cryptkeyarg *arg)
467 static cryptkeyres res;
470 fprintf(stderr, "encrypt(%ld, %s, %08x%08x) = ", uid,
471 arg->remotename, arg->deskey.key.high,
472 arg->deskey.key.low);
474 res.cryptkeyres_u.deskey = arg->deskey;
475 res.status = pk_encrypt(uid, arg->remotename, NULL,
476 &res.cryptkeyres_u.deskey);
478 if (res.status == KEY_SUCCESS) {
479 fprintf(stderr, "%08x%08x\n",
480 res.cryptkeyres_u.deskey.key.high,
481 res.cryptkeyres_u.deskey.key.low);
483 fprintf(stderr, "%s\n", strstatus(res.status));
491 key_decrypt_1_svc_prog(uid_t uid, cryptkeyarg *arg)
493 static cryptkeyres res;
496 fprintf(stderr, "decrypt(%ld, %s, %08x%08x) = ", uid,
497 arg->remotename, arg->deskey.key.high,
498 arg->deskey.key.low);
500 res.cryptkeyres_u.deskey = arg->deskey;
501 res.status = pk_decrypt(uid, arg->remotename, NULL,
502 &res.cryptkeyres_u.deskey);
504 if (res.status == KEY_SUCCESS) {
505 fprintf(stderr, "%08x%08x\n",
506 res.cryptkeyres_u.deskey.key.high,
507 res.cryptkeyres_u.deskey.key.low);
509 fprintf(stderr, "%s\n", strstatus(res.status));
518 key_gen_1_svc_prog(void *v, struct svc_req *s)
521 static des_block keygen;
522 static des_block key;
524 gettimeofday(&time, NULL);
525 keygen.key.high += (time.tv_sec ^ time.tv_usec);
526 keygen.key.low += (time.tv_sec ^ time.tv_usec);
527 ecb_crypt((char *)&masterkey, (char *)&keygen, sizeof (keygen),
528 DES_ENCRYPT | DES_HW);
530 des_setparity((char *)&key);
532 fprintf(stderr, "gen() = %08x%08x\n", key.key.high,
540 key_getcred_1_svc_prog(uid_t uid, netnamestr *name)
542 static getcredres res;
543 static u_int gids[NGROUPS];
544 struct unixcred *cred;
546 cred = &res.getcredres_u.cred;
547 cred->gids.gids_val = gids;
548 if (!netname2user(*name, (uid_t *) &cred->uid, (gid_t *) &cred->gid,
549 (int *)&cred->gids.gids_len, (gid_t *)gids)) {
550 res.status = KEY_UNKNOWN;
552 res.status = KEY_SUCCESS;
555 fprintf(stderr, "getcred(%s) = ", *name);
556 if (res.status == KEY_SUCCESS) {
557 fprintf(stderr, "uid=%d, gid=%d, grouplen=%d\n",
558 cred->uid, cred->gid, cred->gids.gids_len);
560 fprintf(stderr, "%s\n", strstatus(res.status));
571 keyprogram(struct svc_req *rqstp, SVCXPRT *transp)
574 keybuf key_set_1_arg;
575 cryptkeyarg key_encrypt_1_arg;
576 cryptkeyarg key_decrypt_1_arg;
577 netnamestr key_getcred_1_arg;
578 cryptkeyarg key_encrypt_2_arg;
579 cryptkeyarg key_decrypt_2_arg;
580 netnamestr key_getcred_2_arg;
581 cryptkeyarg2 key_encrypt_pk_2_arg;
582 cryptkeyarg2 key_decrypt_pk_2_arg;
583 key_netstarg key_net_put_2_arg;
584 netobj key_get_conv_2_arg;
587 xdrproc_t xdr_argument, xdr_result;
592 switch (rqstp->rq_proc) {
594 svc_sendreply(transp, (xdrproc_t)xdr_void, NULL);
598 xdr_argument = (xdrproc_t)xdr_keybuf;
599 xdr_result = (xdrproc_t)xdr_int;
600 local = (char *(*)()) key_set_1_svc_prog;
605 xdr_argument = (xdrproc_t)xdr_cryptkeyarg;
606 xdr_result = (xdrproc_t)xdr_cryptkeyres;
607 local = (char *(*)()) key_encrypt_1_svc_prog;
612 xdr_argument = (xdrproc_t)xdr_cryptkeyarg;
613 xdr_result = (xdrproc_t)xdr_cryptkeyres;
614 local = (char *(*)()) key_decrypt_1_svc_prog;
619 xdr_argument = (xdrproc_t)xdr_void;
620 xdr_result = (xdrproc_t)xdr_des_block;
621 local = (char *(*)()) key_gen_1_svc_prog;
626 xdr_argument = (xdrproc_t)xdr_netnamestr;
627 xdr_result = (xdrproc_t)xdr_getcredres;
628 local = (char *(*)()) key_getcred_1_svc_prog;
633 xdr_argument = (xdrproc_t)xdr_cryptkeyarg2;
634 xdr_result = (xdrproc_t)xdr_cryptkeyres;
635 local = (char *(*)()) key_encrypt_pk_2_svc_prog;
640 xdr_argument = (xdrproc_t)xdr_cryptkeyarg2;
641 xdr_result = (xdrproc_t)xdr_cryptkeyres;
642 local = (char *(*)()) key_decrypt_pk_2_svc_prog;
648 xdr_argument = (xdrproc_t)xdr_key_netstarg;
649 xdr_result = (xdrproc_t)xdr_keystatus;
650 local = (char *(*)()) key_net_put_2_svc_prog;
655 xdr_argument = (xdrproc_t) xdr_void;
656 xdr_result = (xdrproc_t)xdr_key_netstres;
657 local = (char *(*)()) key_net_get_2_svc_prog;
662 xdr_argument = (xdrproc_t) xdr_keybuf;
663 xdr_result = (xdrproc_t)xdr_cryptkeyres;
664 local = (char *(*)()) key_get_conv_2_svc_prog;
669 svcerr_noproc(transp);
673 if (root_auth(transp, rqstp) == 0) {
676 "not local privileged process\n");
678 svcerr_weakauth(transp);
681 if (rqstp->rq_cred.oa_flavor != AUTH_SYS) {
683 fprintf(stderr, "not unix authentication\n");
685 svcerr_weakauth(transp);
688 uid = ((struct authsys_parms *)rqstp->rq_clntcred)->aup_uid;
691 memset(&argument, 0, sizeof (argument));
692 if (!svc_getargs(transp, xdr_argument, &argument)) {
693 svcerr_decode(transp);
696 result = (*local) (uid, &argument);
697 if (!svc_sendreply(transp, xdr_result, result)) {
699 fprintf(stderr, "unable to reply\n");
700 svcerr_systemerr(transp);
702 if (!svc_freeargs(transp, xdr_argument, &argument)) {
704 fprintf(stderr, "unable to free arguments\n");
711 root_auth(SVCXPRT *trans, struct svc_req *rqstp)
714 struct sockaddr *remote;
716 remote = svc_getrpccaller(trans)->buf;
717 if (remote->sa_family != AF_UNIX) {
719 fprintf(stderr, "client didn't use AF_UNIX\n");
723 if (__rpc_get_local_uid(trans, &uid) < 0) {
725 fprintf(stderr, "__rpc_get_local_uid failed\n");
730 fprintf(stderr, "local_uid %ld\n", uid);
733 if (rqstp->rq_cred.oa_flavor == AUTH_SYS) {
734 if (((uid_t) ((struct authunix_parms *)
735 rqstp->rq_clntcred)->aup_uid)
741 "local_uid %ld mismatches auth %ld\n", uid,
742 ((uid_t) ((struct authunix_parms *)rqstp->rq_clntcred)->aup_uid));
747 fprintf(stderr, "Not auth sys\n");
755 fprintf(stderr, "usage: keyserv [-n] [-D] [-d] [-v] [-p path]\n");
756 fprintf(stderr, "-d disables the use of default keys\n");