2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
5 * Authors: Doug Rabson <dfr@rabson.org>
6 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * Extensively modified from /usr/src/usr.sbin/gssd.c r344402 for
32 * the server side of kernel RPC-over-TLS by Rick Macklem.
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <sys/param.h>
39 #include <sys/types.h>
40 #include <sys/linker.h>
41 #include <sys/module.h>
42 #include <sys/queue.h>
44 #include <sys/sysctl.h>
45 #include <sys/syslog.h>
61 #include <rpc/rpc_com.h>
62 #include <rpc/rpcsec_tls.h>
64 #include <openssl/opensslconf.h>
65 #include <openssl/bio.h>
66 #include <openssl/ssl.h>
67 #include <openssl/err.h>
68 #include <openssl/x509v3.h>
71 #include "rpc.tlscommon.h"
73 #ifndef _PATH_RPCTLSSDSOCK
74 #define _PATH_RPCTLSSDSOCK "/var/run/rpc.tlsservd.sock"
76 #ifndef _PATH_CERTANDKEY
77 #define _PATH_CERTANDKEY "/etc/rpc.tlsservd/"
79 #ifndef _PATH_RPCTLSSDPID
80 #define _PATH_RPCTLSSDPID "/var/run/rpc.tlsservd.pid"
82 #ifndef _PREFERRED_CIPHERS
83 #define _PREFERRED_CIPHERS "AES128-GCM-SHA256"
86 /* Global variables also used by rpc.tlscommon.c. */
87 int rpctls_debug_level;
89 SSL_CTX *rpctls_ctx = NULL;
90 const char *rpctls_verify_cafile = NULL;
91 const char *rpctls_verify_capath = NULL;
92 char *rpctls_crlfile = NULL;
93 bool rpctls_gothup = false;
94 struct ssl_list rpctls_ssllist;
96 static struct pidfh *rpctls_pfh = NULL;
97 static bool rpctls_do_mutual = false;
98 static const char *rpctls_certdir = _PATH_CERTANDKEY;
99 static bool rpctls_comparehost = false;
100 static unsigned int rpctls_wildcard = X509_CHECK_FLAG_NO_WILDCARDS;
101 static uint64_t rpctls_ssl_refno = 0;
102 static uint64_t rpctls_ssl_sec = 0;
103 static uint64_t rpctls_ssl_usec = 0;
104 static bool rpctls_cnuser = false;
105 static char *rpctls_dnsname;
106 static const char *rpctls_cnuseroid = "1.3.6.1.4.1.2238.1.1.1";
108 static void rpctlssd_terminate(int);
109 static SSL_CTX *rpctls_setup_ssl(const char *certdir);
110 static SSL *rpctls_server(SSL_CTX *ctx, int s,
111 uint32_t *flags, uint32_t *uidp,
112 int *ngrps, uint32_t *gidp, X509 **certp);
113 static int rpctls_cnname(X509 *cert, uint32_t *uidp,
114 int *ngrps, uint32_t *gidp);
115 static char *rpctls_getdnsname(char *dnsname);
116 static void rpctls_huphandler(int sig __unused);
118 extern void rpctlssd_1(struct svc_req *rqstp, SVCXPRT *transp);
120 static struct option longopts[] = {
121 { "certdir", required_argument, NULL, 'D' },
122 { "debuglevel", no_argument, NULL, 'd' },
123 { "checkhost", no_argument, NULL, 'h' },
124 { "verifylocs", required_argument, NULL, 'l' },
125 { "mutualverf", no_argument, NULL, 'm' },
126 { "domain", required_argument, NULL, 'n' },
127 { "verifydir", required_argument, NULL, 'p' },
128 { "crl", required_argument, NULL, 'r' },
129 { "certuser", no_argument, NULL, 'u' },
130 { "verbose", no_argument, NULL, 'v' },
131 { "multiwild", no_argument, NULL, 'W' },
132 { "singlewild", no_argument, NULL, 'w' },
137 main(int argc, char **argv)
140 * We provide an RPC service on a local-domain socket. The
141 * kernel rpctls code will upcall to this daemon to do the initial
144 struct sockaddr_un sun;
145 int ch, debug, fd, oldmask;
149 char hostname[MAXHOSTNAMELEN + 2];
152 size_t tls_enable_len;
154 /* Check that another rpctlssd isn't already running. */
155 rpctls_pfh = pidfile_open(_PATH_RPCTLSSDPID, 0600, &otherpid);
156 if (rpctls_pfh == NULL) {
158 errx(1, "rpctlssd already running, pid: %d.", otherpid);
159 warn("cannot open or create pidfile");
162 /* Check to see that the ktls is enabled. */
163 tls_enable_len = sizeof(tls_enable);
164 if (sysctlbyname("kern.ipc.tls.enable", &tls_enable, &tls_enable_len,
165 NULL, 0) != 0 || !tls_enable)
166 errx(1, "Kernel TLS not enabled");
168 /* Get the time when this daemon is started. */
169 gettimeofday(&tm, &tz);
170 rpctls_ssl_sec = tm.tv_sec;
171 rpctls_ssl_usec = tm.tv_usec;
173 /* Set the dns name for the server. */
174 rpctls_dnsname = rpctls_getdnsname(hostname);
175 if (rpctls_dnsname == NULL) {
176 strcpy(hostname, "@default.domain");
177 rpctls_dnsname = hostname;
181 rpctls_verbose = false;
182 while ((ch = getopt_long(argc, argv, "D:dhl:n:mp:r:uvWw", longopts,
186 rpctls_certdir = optarg;
189 rpctls_debug_level++;
192 rpctls_comparehost = true;
195 rpctls_verify_cafile = optarg;
198 rpctls_do_mutual = true;
202 strlcpy(&hostname[1], optarg, MAXHOSTNAMELEN + 1);
203 rpctls_dnsname = hostname;
206 rpctls_verify_capath = optarg;
209 rpctls_crlfile = optarg;
212 rpctls_cnuser = true;
215 rpctls_verbose = true;
218 if (rpctls_wildcard != X509_CHECK_FLAG_NO_WILDCARDS)
219 errx(1, "options -w and -W are mutually "
221 rpctls_wildcard = X509_CHECK_FLAG_MULTI_LABEL_WILDCARDS;
224 if (rpctls_wildcard != X509_CHECK_FLAG_NO_WILDCARDS)
225 errx(1, "options -w and -W are mutually "
230 fprintf(stderr, "usage: %s "
231 "[-D/--certdir certdir] [-d/--debuglevel] "
233 "[-l/--verifylocs CAfile] [-m/--mutualverf] "
234 "[-n/--domain domain_name] "
235 "[-p/--verifydir CApath] [-r/--crl CRLfile] "
236 "[-u/--certuser] [-v/--verbose] [-W/--multiwild] "
237 "[-w/--singlewild]\n", argv[0]);
241 if (rpctls_do_mutual && rpctls_verify_cafile == NULL &&
242 rpctls_verify_capath == NULL)
243 errx(1, "-m requires the -l <CAfile> and/or "
244 "-p <CApath> options");
245 if (rpctls_comparehost && (!rpctls_do_mutual ||
246 (rpctls_verify_cafile == NULL && rpctls_verify_capath == NULL)))
247 errx(1, "-h requires the -m plus the "
248 "-l <CAfile> and/or -p <CApath> options");
249 if (!rpctls_comparehost && rpctls_wildcard !=
250 X509_CHECK_FLAG_NO_WILDCARDS)
251 errx(1, "The -w or -W options require the -h option");
252 if (rpctls_cnuser && (!rpctls_do_mutual ||
253 (rpctls_verify_cafile == NULL && rpctls_verify_capath == NULL)))
254 errx(1, "-u requires the -m plus the "
255 "-l <CAfile> and/or -p <CApath> options");
257 if (modfind("krpc") < 0) {
258 /* Not present in kernel, try loading it */
259 if (kldload("krpc") < 0 || modfind("krpc") < 0)
260 errx(1, "Kernel RPC is not available");
263 if (rpctls_debug_level == 0) {
264 if (daemon(0, 0) != 0)
265 err(1, "Can't daemonize");
266 signal(SIGINT, SIG_IGN);
267 signal(SIGQUIT, SIG_IGN);
268 signal(SIGHUP, SIG_IGN);
270 signal(SIGTERM, rpctlssd_terminate);
271 signal(SIGPIPE, SIG_IGN);
272 signal(SIGHUP, rpctls_huphandler);
274 pidfile_write(rpctls_pfh);
276 memset(&sun, 0, sizeof sun);
277 sun.sun_family = AF_LOCAL;
278 unlink(_PATH_RPCTLSSDSOCK);
279 strcpy(sun.sun_path, _PATH_RPCTLSSDSOCK);
280 sun.sun_len = SUN_LEN(&sun);
281 fd = socket(AF_LOCAL, SOCK_STREAM, 0);
283 if (rpctls_debug_level == 0) {
284 syslog(LOG_ERR, "Can't create local rpctlssd socket");
287 err(1, "Can't create local rpctlssd socket");
289 oldmask = umask(S_IXUSR|S_IRWXG|S_IRWXO);
290 if (bind(fd, (struct sockaddr *)&sun, sun.sun_len) < 0) {
291 if (rpctls_debug_level == 0) {
292 syslog(LOG_ERR, "Can't bind local rpctlssd socket");
295 err(1, "Can't bind local rpctlssd socket");
298 if (listen(fd, SOMAXCONN) < 0) {
299 if (rpctls_debug_level == 0) {
301 "Can't listen on local rpctlssd socket");
304 err(1, "Can't listen on local rpctlssd socket");
306 xprt = svc_vc_create(fd, RPC_MAXDATASIZE, RPC_MAXDATASIZE);
308 if (rpctls_debug_level == 0) {
310 "Can't create transport for local rpctlssd socket");
313 err(1, "Can't create transport for local rpctlssd socket");
315 if (!svc_reg(xprt, RPCTLSSD, RPCTLSSDVERS, rpctlssd_1, NULL)) {
316 if (rpctls_debug_level == 0) {
318 "Can't register service for local rpctlssd socket");
321 err(1, "Can't register service for local rpctlssd socket");
324 rpctls_ctx = rpctls_setup_ssl(rpctls_certdir);
325 if (rpctls_ctx == NULL) {
326 if (rpctls_debug_level == 0) {
327 syslog(LOG_ERR, "Can't create SSL context");
330 err(1, "Can't create SSL context");
332 rpctls_gothup = false;
333 LIST_INIT(&rpctls_ssllist);
335 rpctls_syscall(RPCTLS_SYSC_SRVSETPATH, _PATH_RPCTLSSDSOCK);
339 rpctls_syscall(RPCTLS_SYSC_SRVSHUTDOWN, "");
341 SSL_CTX_free(rpctls_ctx);
347 rpctlssd_null_1_svc(__unused void *argp, __unused void *result,
348 __unused struct svc_req *rqstp)
351 rpctls_verbose_out("rpctlssd_null_svc: done\n");
356 rpctlssd_connect_1_svc(__unused void *argp,
357 struct rpctlssd_connect_res *result, __unused struct svc_req *rqstp)
362 struct ssl_entry *newslp;
367 rpctls_verbose_out("rpctlsd_connect_svc: started\n");
368 memset(result, 0, sizeof(*result));
369 /* Get the socket fd from the kernel. */
370 s = rpctls_syscall(RPCTLS_SYSC_SRVSOCKET, "");
374 /* Do the server side of a TLS handshake. */
375 gidp = calloc(NGROUPS, sizeof(*gidp));
376 ssl = rpctls_server(rpctls_ctx, s, &flags, &uid, &ngrps, gidp, &cert);
379 rpctls_verbose_out("rpctlssd_connect_svc: ssl "
382 * For RPC-over-TLS, this upcall is expected
383 * to close off the socket upon handshake failure.
388 rpctls_verbose_out("rpctlssd_connect_svc: "
389 "succeeded flags=0x%x\n", flags);
390 result->flags = flags;
391 result->sec = rpctls_ssl_sec;
392 result->usec = rpctls_ssl_usec;
393 result->ssl = ++rpctls_ssl_refno;
394 /* Hard to believe this could ever wrap around.. */
395 if (rpctls_ssl_refno == 0)
396 result->ssl = ++rpctls_ssl_refno;
397 if ((flags & RPCTLS_FLAGS_CERTUSER) != 0) {
399 result->gid.gid_len = ngrps;
400 result->gid.gid_val = gidp;
403 result->gid.gid_len = 0;
404 result->gid.gid_val = gidp;
408 /* Maintain list of all current SSL *'s */
409 newslp = malloc(sizeof(*newslp));
412 newslp->shutoff = false;
413 newslp->refno = rpctls_ssl_refno;
415 LIST_INSERT_HEAD(&rpctls_ssllist, newslp, next);
420 rpctlssd_handlerecord_1_svc(struct rpctlssd_handlerecord_arg *argp,
421 struct rpctlssd_handlerecord_res *result, __unused struct svc_req *rqstp)
423 struct ssl_entry *slp;
428 if (argp->sec == rpctls_ssl_sec && argp->usec ==
430 LIST_FOREACH(slp, &rpctls_ssllist, next) {
431 if (slp->refno == argp->ssl)
437 rpctls_verbose_out("rpctlssd_handlerecord fd=%d\n",
440 * An SSL_read() of 0 bytes should fail, but it should
441 * handle the non-application data record before doing so.
443 ret = SSL_read(slp->ssl, &junk, 0);
445 /* Check to see if this was a close alert. */
446 ret = SSL_get_shutdown(slp->ssl);
447 if ((ret & (SSL_SENT_SHUTDOWN |
448 SSL_RECEIVED_SHUTDOWN)) == SSL_RECEIVED_SHUTDOWN)
449 SSL_shutdown(slp->ssl);
451 if (rpctls_debug_level == 0)
452 syslog(LOG_ERR, "SSL_read returned %d", ret);
454 fprintf(stderr, "SSL_read returned %d\n", ret);
456 result->reterr = RPCTLSERR_OK;
458 result->reterr = RPCTLSERR_NOSSL;
463 rpctlssd_disconnect_1_svc(struct rpctlssd_disconnect_arg *argp,
464 struct rpctlssd_disconnect_res *result, __unused struct svc_req *rqstp)
466 struct ssl_entry *slp;
470 if (argp->sec == rpctls_ssl_sec && argp->usec ==
472 LIST_FOREACH(slp, &rpctls_ssllist, next) {
473 if (slp->refno == argp->ssl)
479 rpctls_verbose_out("rpctlssd_disconnect fd=%d closed\n",
481 LIST_REMOVE(slp, next);
483 ret = SSL_get_shutdown(slp->ssl);
485 * Do an SSL_shutdown() unless a close alert has
488 if ((ret & SSL_SENT_SHUTDOWN) == 0)
489 SSL_shutdown(slp->ssl);
492 if (slp->cert != NULL)
493 X509_free(slp->cert);
495 * For RPC-over-TLS, this upcall is expected
496 * to close off the socket.
499 shutdown(slp->s, SHUT_WR);
502 result->reterr = RPCTLSERR_OK;
504 result->reterr = RPCTLSERR_NOCLOSE;
509 rpctlssd_1_freeresult(__unused SVCXPRT *transp, xdrproc_t xdr_result,
512 rpctlssd_connect_res *res;
514 if (xdr_result == (xdrproc_t)xdr_rpctlssd_connect_res) {
515 res = (rpctlssd_connect_res *)(void *)result;
516 free(res->gid.gid_val);
522 rpctlssd_terminate(int sig __unused)
524 struct ssl_entry *slp;
526 rpctls_syscall(RPCTLS_SYSC_SRVSHUTDOWN, "");
527 pidfile_remove(rpctls_pfh);
529 LIST_FOREACH(slp, &rpctls_ssllist, next)
530 shutdown(slp->s, SHUT_RD);
534 /* Allow the handshake to proceed. */
536 rpctls_verify_callback(__unused int preverify_ok,
537 __unused X509_STORE_CTX *x509_ctx)
544 rpctls_setup_ssl(const char *certdir)
552 SSL_load_error_strings();
553 OpenSSL_add_all_algorithms();
555 ctx = SSL_CTX_new(TLS_server_method());
557 rpctls_verbose_out("rpctls_setup_ssl: SSL_CTX_new failed\n");
560 SSL_CTX_set_ecdh_auto(ctx, 1);
563 * Set preferred ciphers, since KERN_TLS only supports a
566 ret = SSL_CTX_set_cipher_list(ctx, _PREFERRED_CIPHERS);
568 rpctls_verbose_out("rpctls_setup_ssl: "
569 "SSL_CTX_set_cipher_list failed to set any ciphers\n");
574 /* Get the cert.pem and certkey.pem files from the directory certdir. */
575 len = strlcpy(path, certdir, sizeof(path));
576 rlen = sizeof(path) - len;
577 if (strlcpy(&path[len], "cert.pem", rlen) != 8) {
581 ret = SSL_CTX_use_certificate_file(ctx, path, SSL_FILETYPE_PEM);
583 rpctls_verbose_out("rpctls_setup_ssl: can't use certificate "
584 "file path=%s ret=%d\n", path, ret);
588 if (strlcpy(&path[len], "certkey.pem", rlen) != 11) {
592 ret = SSL_CTX_use_PrivateKey_file(ctx, path, SSL_FILETYPE_PEM);
594 rpctls_verbose_out("rpctls_setup_ssl: Can't use private "
595 "key path=%s ret=%d\n", path, ret);
600 /* Set Mutual authentication, as required. */
601 if (rpctls_do_mutual) {
602 if (rpctls_verify_cafile != NULL ||
603 rpctls_verify_capath != NULL) {
604 if (rpctls_crlfile != NULL) {
605 ret = rpctls_loadcrlfile(ctx);
607 rpctls_verbose_out("rpctls_setup_ssl:"
608 " Load CRLfile failed\n");
613 #if OPENSSL_VERSION_NUMBER >= 0x30000000
615 if (rpctls_verify_cafile != NULL)
616 ret = SSL_CTX_load_verify_file(ctx,
617 rpctls_verify_cafile);
618 if (ret != 0 && rpctls_verify_capath != NULL)
619 ret = SSL_CTX_load_verify_dir(ctx,
620 rpctls_verify_capath);
622 ret = SSL_CTX_load_verify_locations(ctx,
623 rpctls_verify_cafile, rpctls_verify_capath);
626 rpctls_verbose_out("rpctls_setup_ssl: "
627 "Can't load verify locations\n");
631 if (rpctls_verify_cafile != NULL)
632 SSL_CTX_set_client_CA_list(ctx,
633 SSL_load_client_CA_file(
634 rpctls_verify_cafile));
636 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER,
637 rpctls_verify_callback);
639 #ifdef SSL_OP_ENABLE_KTLS
640 SSL_CTX_set_options(ctx, SSL_OP_ENABLE_KTLS);
642 #ifdef SSL_MODE_NO_KTLS_TX
643 SSL_CTX_clear_mode(ctx, SSL_MODE_NO_KTLS_TX | SSL_MODE_NO_KTLS_RX);
649 rpctls_server(SSL_CTX *ctx, int s, uint32_t *flags, uint32_t *uidp,
650 int *ngrps, uint32_t *gidp, X509 **certp)
654 struct sockaddr *sad;
655 struct sockaddr_storage ad;
656 char hostnam[NI_MAXHOST];
663 sad = (struct sockaddr *)&ad;
666 rpctls_verbose_out("rpctls_server: SSL_new failed\n");
669 if (SSL_set_fd(ssl, s) != 1) {
670 rpctls_verbose_out("rpctls_server: SSL_set_fd failed\n");
674 ret = SSL_accept(ssl);
676 rpctls_verbose_out("rpctls_server: SSL_accept "
677 "failed ret=%d\n", ret);
681 *flags |= RPCTLS_FLAGS_HANDSHAKE;
682 if (rpctls_do_mutual) {
683 cert = SSL_get_peer_certificate(ssl);
685 gethostret = rpctls_gethost(s, sad, hostnam,
689 cp2 = X509_NAME_oneline(
690 X509_get_subject_name(cert), NULL, 0);
691 *flags |= RPCTLS_FLAGS_GOTCERT;
692 verfret = SSL_get_verify_result(ssl);
693 if (verfret != X509_V_OK) {
694 cp = X509_NAME_oneline(
695 X509_get_issuer_name(cert), NULL, 0);
696 if (rpctls_debug_level == 0)
697 syslog(LOG_INFO | LOG_DAEMON,
698 "rpctls_server: client IP %s "
699 "issuerName=%s subjectName=%s"
700 " verify failed %s\n", hostnam,
702 X509_verify_cert_error_string(
706 "rpctls_server: client IP %s "
707 "issuerName=%s subjectName=%s"
708 " verify failed %s\n", hostnam,
710 X509_verify_cert_error_string(
714 X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT ||
715 verfret == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN)
716 *flags |= RPCTLS_FLAGS_SELFSIGNED;
717 else if (verfret == X509_V_OK) {
718 if (rpctls_comparehost) {
721 ret = rpctls_checkhost(sad,
722 cert, rpctls_wildcard);
725 RPCTLS_FLAGS_DISABLED;
733 ret = rpctls_cnname(cert, uidp,
736 *flags |= RPCTLS_FLAGS_CERTUSER;
738 *flags |= RPCTLS_FLAGS_VERIFIED;
745 rpctls_verbose_out("rpctls_server: "
746 "No peer certificate\n");
749 /* Check to see that ktls is working for the connection. */
750 ret = BIO_get_ktls_send(SSL_get_wbio(ssl));
751 rpctls_verbose_out("rpctls_server: BIO_get_ktls_send=%d\n", ret);
753 ret = BIO_get_ktls_recv(SSL_get_rbio(ssl));
754 rpctls_verbose_out("rpctls_server: BIO_get_ktls_recv=%d\n",
758 if (rpctls_debug_level == 0)
759 syslog(LOG_ERR, "ktls not working");
761 fprintf(stderr, "ktls not working\n");
763 * The handshake has completed, so all that can be
764 * done is disable the connection.
766 *flags |= RPCTLS_FLAGS_DISABLED;
773 * Acquire the dnsname for this server.
776 rpctls_getdnsname(char *hostname)
779 struct addrinfo *aip, hints;
783 if (gethostname(hostname, MAXHOSTNAMELEN) == 0) {
784 if ((cp = strchr(hostname, '.')) != NULL &&
789 memset((void *)&hints, 0, sizeof (hints));
790 hints.ai_flags = AI_CANONNAME;
791 error = getaddrinfo(hostname, NULL, &hints, &aip);
793 if (aip->ai_canonname != NULL &&
794 (cp = strchr(aip->ai_canonname, '.')) !=
795 NULL && *(cp + 1) != '\0') {
797 strlcpy(&hostname[1], cp + 1,
809 * Check for an otherName component of subjectAltName where the OID
810 * matches and the "domain" matches that of this server.
811 * If found, map "user" to a <uid, gidlist> for it.
814 rpctls_cnname(X509 *cert, uint32_t *uidp, int *ngrps, uint32_t *gidp)
816 char *cp, usern[1024 + 1];
820 GENERAL_NAMES *genlist;
821 GENERAL_NAME *genname;
825 /* First, find the otherName in the subjectAltName. */
826 genlist = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
830 for (i = 0; i < sk_GENERAL_NAME_num(genlist); i++) {
831 genname = sk_GENERAL_NAME_value(genlist, i);
832 if (genname->type != GEN_OTHERNAME)
834 val = genname->d.otherName;
836 /* Check to see that it is the correct OID. */
837 slen = i2t_ASN1_OBJECT(usern, sizeof(usern), val->type_id);
838 if (slen != strlen(rpctls_cnuseroid) || memcmp(usern,
839 rpctls_cnuseroid, slen) != 0)
842 /* Sanity check the otherName. */
843 if (val->value->type != V_ASN1_UTF8STRING ||
844 val->value->value.utf8string->length < 3 ||
845 (size_t)val->value->value.utf8string->length > sizeof(usern)
847 rpctls_verbose_out("rpctls_cnname: invalid cnuser "
848 "type=%d\n", val->value->type);
852 /* Look for a "user" in the otherName */
853 memcpy(usern, val->value->value.utf8string->data,
854 val->value->value.utf8string->length);
855 usern[val->value->value.utf8string->length] = '\0';
857 /* Now, look for the @dnsname suffix in the commonName. */
858 cp = strcasestr(usern, rpctls_dnsname);
861 if (*(cp + strlen(rpctls_dnsname)) != '\0') {
871 /* See if the "user" is in the passwd database. */
872 pwd = getpwnam(usern);
877 if (getgrouplist(pwd->pw_name, pwd->pw_gid, gids, ngrps) < 0)
879 rpctls_verbose_out("mapped user=%s ngrps=%d uid=%d\n", pwd->pw_name,
880 *ngrps, pwd->pw_uid);
881 for (j = 0; j < *ngrps; j++)
887 rpctls_huphandler(int sig __unused)
890 rpctls_gothup = true;