1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
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>
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
16 *
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
27 * SUCH DAMAGE.
28 */
29
30 /*
31 * Extensively modified from /usr/src/usr.sbin/gssd.c r344402 for
32 * the client side of kernel RPC-over-TLS by Rick Macklem.
33 */
34
35 #include <sys/param.h>
36 #include <sys/types.h>
37 #include <sys/queue.h>
38 #include <sys/linker.h>
39 #include <sys/module.h>
40 #include <sys/stat.h>
41 #include <sys/sysctl.h>
42 #include <sys/syslog.h>
43 #include <sys/time.h>
44 #include <err.h>
45 #include <getopt.h>
46 #include <libutil.h>
47 #include <netdb.h>
48 #include <signal.h>
49 #include <stdarg.h>
50 #include <stdbool.h>
51 #include <stdio.h>
52 #include <stdlib.h>
53 #include <string.h>
54 #include <unistd.h>
55
56 #include <rpc/rpc.h>
57 #include <rpc/rpc_com.h>
58 #include <rpc/rpcsec_tls.h>
59
60 #include <openssl/opensslconf.h>
61 #include <openssl/bio.h>
62 #include <openssl/ssl.h>
63 #include <openssl/err.h>
64 #include <openssl/x509v3.h>
65
66 #include "rpctlscd.h"
67 #include "rpc.tlscommon.h"
68
69 #ifndef _PATH_CERTANDKEY
70 #define _PATH_CERTANDKEY "/etc/rpc.tlsclntd/"
71 #endif
72 #ifndef _PATH_RPCTLSCDPID
73 #define _PATH_RPCTLSCDPID "/var/run/rpc.tlsclntd.pid"
74 #endif
75
76 /* Global variables also used by rpc.tlscommon.c. */
77 int rpctls_debug_level;
78 bool rpctls_verbose;
79 SSL_CTX *rpctls_ctx = NULL;
80 const char *rpctls_verify_cafile = NULL;
81 const char *rpctls_verify_capath = NULL;
82 char *rpctls_crlfile = NULL;
83 bool rpctls_cert = false;
84 bool rpctls_gothup = false;
85 struct ssl_list rpctls_ssllist;
86
87 static struct pidfh *rpctls_pfh = NULL;
88 static const char *rpctls_certdir = _PATH_CERTANDKEY;
89 static const char *rpctls_ciphers = NULL;
90 static int rpctls_tlsvers = TLS1_3_VERSION;
91
92 static void rpctlscd_terminate(int);
93 static SSL_CTX *rpctls_setupcl_ssl(void);
94 static SSL *rpctls_connect(SSL_CTX *ctx, int s, char *certname,
95 u_int certlen, X509 **certp);
96 static void rpctls_huphandler(int sig __unused);
97
98 extern void rpctlscd_2(struct svc_req *rqstp, SVCXPRT *transp);
99
100 static struct option longopts[] = {
101 { "usetls1_2", no_argument, NULL, '2' },
102 { "certdir", required_argument, NULL, 'D' },
103 { "ciphers", required_argument, NULL, 'C' },
104 { "debuglevel", no_argument, NULL, 'd' },
105 { "verifylocs", required_argument, NULL, 'l' },
106 { "mutualverf", no_argument, NULL, 'm' },
107 { "verifydir", required_argument, NULL, 'p' },
108 { "crl", required_argument, NULL, 'r' },
109 { "verbose", no_argument, NULL, 'v' },
110 { NULL, 0, NULL, 0 }
111 };
112
113 int
main(int argc,char ** argv)114 main(int argc, char **argv)
115 {
116 int ch;
117 SVCXPRT *xprt;
118 bool tls_enable;
119 pid_t otherpid;
120 size_t tls_enable_len;
121
122 /* Check that another rpctlscd isn't already running. */
123 rpctls_pfh = pidfile_open(_PATH_RPCTLSCDPID, 0600, &otherpid);
124 if (rpctls_pfh == NULL) {
125 if (errno == EEXIST)
126 errx(1, "rpctlscd already running, pid: %d.", otherpid);
127 warn("cannot open or create pidfile");
128 }
129
130 /* Check to see that the ktls is enabled. */
131 tls_enable_len = sizeof(tls_enable);
132 if (sysctlbyname("kern.ipc.tls.enable", &tls_enable, &tls_enable_len,
133 NULL, 0) != 0 || !tls_enable)
134 errx(1, "Kernel TLS not enabled");
135
136 rpctls_verbose = false;
137 while ((ch = getopt_long(argc, argv, "2C:D:dl:mp:r:v", longopts,
138 NULL)) != -1) {
139 switch (ch) {
140 case '2':
141 rpctls_tlsvers = TLS1_2_VERSION;
142 break;
143 case 'C':
144 rpctls_ciphers = optarg;
145 break;
146 case 'D':
147 rpctls_certdir = optarg;
148 break;
149 case 'd':
150 rpctls_debug_level++;
151 break;
152 case 'l':
153 rpctls_verify_cafile = optarg;
154 break;
155 case 'm':
156 rpctls_cert = true;
157 break;
158 case 'p':
159 rpctls_verify_capath = optarg;
160 break;
161 case 'r':
162 rpctls_crlfile = optarg;
163 break;
164 case 'v':
165 rpctls_verbose = true;
166 break;
167 default:
168 fprintf(stderr, "usage: %s "
169 "[-2/--usetls1_2] "
170 "[-C/--ciphers available_ciphers] "
171 "[-D/--certdir certdir] [-d/--debuglevel] "
172 "[-l/--verifylocs CAfile] [-m/--mutualverf] "
173 "[-p/--verifydir CApath] [-r/--crl CRLfile] "
174 "[-v/--verbose]\n", argv[0]);
175 exit(1);
176 break;
177 }
178 }
179 if (rpctls_crlfile != NULL && rpctls_verify_cafile == NULL &&
180 rpctls_verify_capath == NULL)
181 errx(1, "-r requires the -l <CAfile> and/or "
182 "-p <CApath> options");
183
184 if (modfind("krpc") < 0) {
185 /* Not present in kernel, try loading it */
186 if (kldload("krpc") < 0 || modfind("krpc") < 0)
187 errx(1, "Kernel RPC is not available");
188 }
189
190 /*
191 * Set up the SSL_CTX *.
192 * Do it now, before daemonizing, in case the private key
193 * is encrypted and requires a passphrase to be entered.
194 */
195 rpctls_ctx = rpctls_setupcl_ssl();
196 if (rpctls_ctx == NULL) {
197 if (rpctls_debug_level == 0) {
198 syslog(LOG_ERR, "Can't set up TLS context");
199 exit(1);
200 }
201 err(1, "Can't set up TLS context");
202 }
203 LIST_INIT(&rpctls_ssllist);
204
205 if (!rpctls_debug_level) {
206 if (daemon(0, 0) != 0)
207 err(1, "Can't daemonize");
208 signal(SIGINT, SIG_IGN);
209 signal(SIGQUIT, SIG_IGN);
210 signal(SIGHUP, SIG_IGN);
211 }
212 signal(SIGTERM, rpctlscd_terminate);
213 signal(SIGPIPE, SIG_IGN);
214 signal(SIGHUP, rpctls_huphandler);
215
216 pidfile_write(rpctls_pfh);
217
218 if ((xprt = svc_nl_create("tlsclnt")) == NULL) {
219 if (rpctls_debug_level == 0) {
220 syslog(LOG_ERR,
221 "Can't create transport for local rpctlscd socket");
222 exit(1);
223 }
224 err(1, "Can't create transport for local rpctlscd socket");
225 }
226 if (!svc_reg(xprt, RPCTLSCD, RPCTLSCDVERS, rpctlscd_2, NULL)) {
227 if (rpctls_debug_level == 0) {
228 syslog(LOG_ERR,
229 "Can't register service for local rpctlscd socket");
230 exit(1);
231 }
232 err(1, "Can't register service for local rpctlscd socket");
233 }
234
235 rpctls_svc_run();
236
237 SSL_CTX_free(rpctls_ctx);
238 return (0);
239 }
240
241 bool_t
rpctlscd_null_2_svc(__unused void * argp,__unused void * result,__unused struct svc_req * rqstp)242 rpctlscd_null_2_svc(__unused void *argp, __unused void *result,
243 __unused struct svc_req *rqstp)
244 {
245
246 rpctls_verbose_out("rpctlscd_null: done\n");
247 return (TRUE);
248 }
249
250 bool_t
rpctlscd_connect_2_svc(struct rpctlscd_connect_arg * argp,struct rpctlscd_connect_res * result,__unused struct svc_req * rqstp)251 rpctlscd_connect_2_svc(struct rpctlscd_connect_arg *argp,
252 struct rpctlscd_connect_res *result, __unused struct svc_req *rqstp)
253 {
254 int s;
255 SSL *ssl;
256 struct ssl_entry *newslp;
257 X509 *cert;
258
259 rpctls_verbose_out("rpctlsd_connect: started\n");
260 /* Get the socket fd from the kernel. */
261 s = rpctls_syscall(argp->socookie);
262 if (s < 0) {
263 result->reterr = RPCTLSERR_NOSOCKET;
264 return (TRUE);
265 }
266
267 /* Do a TLS connect handshake. */
268 ssl = rpctls_connect(rpctls_ctx, s, argp->certname.certname_val,
269 argp->certname.certname_len, &cert);
270 if (ssl == NULL) {
271 rpctls_verbose_out("rpctlsd_connect: can't do TLS "
272 "handshake\n");
273 result->reterr = RPCTLSERR_NOSSL;
274 /*
275 * For RPC-over-TLS, this upcall is expected
276 * to close off the socket.
277 */
278 close(s);
279 return (TRUE);
280 } else
281 result->reterr = RPCTLSERR_OK;
282
283 /* Maintain list of all current SSL *'s */
284 newslp = malloc(sizeof(*newslp));
285 newslp->cookie = argp->socookie;
286 newslp->s = s;
287 newslp->shutoff = false;
288 newslp->ssl = ssl;
289 newslp->cert = cert;
290 LIST_INSERT_HEAD(&rpctls_ssllist, newslp, next);
291 return (TRUE);
292 }
293
294 bool_t
rpctlscd_handlerecord_2_svc(struct rpctlscd_handlerecord_arg * argp,struct rpctlscd_handlerecord_res * result,__unused struct svc_req * rqstp)295 rpctlscd_handlerecord_2_svc(struct rpctlscd_handlerecord_arg *argp,
296 struct rpctlscd_handlerecord_res *result, __unused struct svc_req *rqstp)
297 {
298 struct ssl_entry *slp;
299 int ret;
300 char junk;
301
302 LIST_FOREACH(slp, &rpctls_ssllist, next)
303 if (slp->cookie == argp->socookie)
304 break;
305
306 if (slp != NULL) {
307 rpctls_verbose_out("rpctlscd_handlerecord fd=%d\n",
308 slp->s);
309 /*
310 * An SSL_read() of 0 bytes should fail, but it should
311 * handle the non-application data record before doing so.
312 */
313 ret = SSL_read(slp->ssl, &junk, 0);
314 if (ret <= 0) {
315 /* Check to see if this was a close alert. */
316 ret = SSL_get_shutdown(slp->ssl);
317 if ((ret & (SSL_SENT_SHUTDOWN |
318 SSL_RECEIVED_SHUTDOWN)) == SSL_RECEIVED_SHUTDOWN)
319 SSL_shutdown(slp->ssl);
320 } else {
321 if (rpctls_debug_level == 0)
322 syslog(LOG_ERR, "SSL_read returned %d", ret);
323 else
324 fprintf(stderr, "SSL_read returned %d\n", ret);
325 }
326 result->reterr = RPCTLSERR_OK;
327 } else
328 result->reterr = RPCTLSERR_NOSSL;
329 return (TRUE);
330 }
331
332 bool_t
rpctlscd_disconnect_2_svc(struct rpctlscd_disconnect_arg * argp,struct rpctlscd_disconnect_res * result,__unused struct svc_req * rqstp)333 rpctlscd_disconnect_2_svc(struct rpctlscd_disconnect_arg *argp,
334 struct rpctlscd_disconnect_res *result, __unused struct svc_req *rqstp)
335 {
336 struct ssl_entry *slp;
337 int ret;
338
339 LIST_FOREACH(slp, &rpctls_ssllist, next)
340 if (slp->cookie == argp->socookie)
341 break;
342
343 if (slp != NULL) {
344 rpctls_verbose_out("rpctlscd_disconnect: fd=%d closed\n",
345 slp->s);
346 LIST_REMOVE(slp, next);
347 if (!slp->shutoff) {
348 ret = SSL_get_shutdown(slp->ssl);
349 /*
350 * Do an SSL_shutdown() unless a close alert has
351 * already been sent.
352 */
353 if ((ret & SSL_SENT_SHUTDOWN) == 0)
354 SSL_shutdown(slp->ssl);
355 }
356 SSL_free(slp->ssl);
357 if (slp->cert != NULL)
358 X509_free(slp->cert);
359 /*
360 * For RPC-over-TLS, this upcall is expected
361 * to close off the socket.
362 */
363 if (!slp->shutoff)
364 shutdown(slp->s, SHUT_WR);
365 close(slp->s);
366 free(slp);
367 result->reterr = RPCTLSERR_OK;
368 } else
369 result->reterr = RPCTLSERR_NOCLOSE;
370 return (TRUE);
371 }
372
373 int
rpctlscd_2_freeresult(__unused SVCXPRT * transp,__unused xdrproc_t xdr_result,__unused caddr_t result)374 rpctlscd_2_freeresult(__unused SVCXPRT *transp, __unused xdrproc_t xdr_result,
375 __unused caddr_t result)
376 {
377
378 return (TRUE);
379 }
380
381 static void
rpctlscd_terminate(int sig __unused)382 rpctlscd_terminate(int sig __unused)
383 {
384
385 pidfile_remove(rpctls_pfh);
386 exit(0);
387 }
388
389 static SSL_CTX *
rpctls_setupcl_ssl(void)390 rpctls_setupcl_ssl(void)
391 {
392 SSL_CTX *ctx;
393 char path[PATH_MAX];
394 size_t len, rlen;
395 int ret;
396
397 ctx = SSL_CTX_new(TLS_client_method());
398 if (ctx == NULL) {
399 rpctls_verbose_out("rpctls_setupcl_ssl: SSL_CTX_new "
400 "failed\n");
401 return (NULL);
402 }
403
404 if (rpctls_ciphers != NULL) {
405 /*
406 * Set available ciphers, since KERN_TLS only supports a
407 * few of them.
408 */
409 ret = SSL_CTX_set_ciphersuites(ctx, rpctls_ciphers);
410 if (ret == 0) {
411 rpctls_verbose_out("rpctls_setupcl_ssl: "
412 "SSL_CTX_set_ciphersuites failed: %s\n",
413 rpctls_ciphers);
414 SSL_CTX_free(ctx);
415 return (NULL);
416 }
417 }
418
419 /*
420 * If rpctls_cert is true, a certificate and key exists in
421 * rpctls_certdir, so that it can do mutual authentication.
422 */
423 if (rpctls_cert) {
424 /* Get the cert.pem and certkey.pem files. */
425 len = strlcpy(path, rpctls_certdir, sizeof(path));
426 rlen = sizeof(path) - len;
427 if (strlcpy(&path[len], "cert.pem", rlen) != 8) {
428 SSL_CTX_free(ctx);
429 return (NULL);
430 }
431 ret = SSL_CTX_use_certificate_file(ctx, path,
432 SSL_FILETYPE_PEM);
433 if (ret != 1) {
434 rpctls_verbose_out("rpctls_setupcl_ssl: can't use "
435 "certificate file path=%s ret=%d\n", path, ret);
436 SSL_CTX_free(ctx);
437 return (NULL);
438 }
439 if (strlcpy(&path[len], "certkey.pem", rlen) != 11) {
440 SSL_CTX_free(ctx);
441 return (NULL);
442 }
443 ret = SSL_CTX_use_PrivateKey_file(ctx, path,
444 SSL_FILETYPE_PEM);
445 if (ret != 1) {
446 rpctls_verbose_out("rpctls_setupcl_ssl: Can't use "
447 "private key path=%s ret=%d\n", path, ret);
448 SSL_CTX_free(ctx);
449 return (NULL);
450 }
451 }
452
453 if (rpctls_verify_cafile != NULL || rpctls_verify_capath != NULL) {
454 if (rpctls_crlfile != NULL) {
455 ret = rpctls_loadcrlfile(ctx);
456 if (ret == 0) {
457 rpctls_verbose_out("rpctls_setupcl_ssl: "
458 "Load CRLfile failed\n");
459 SSL_CTX_free(ctx);
460 return (NULL);
461 }
462 }
463 #if OPENSSL_VERSION_NUMBER >= 0x30000000
464 ret = 1;
465 if (rpctls_verify_cafile != NULL)
466 ret = SSL_CTX_load_verify_file(ctx,
467 rpctls_verify_cafile);
468 if (ret != 0 && rpctls_verify_capath != NULL)
469 ret = SSL_CTX_load_verify_dir(ctx,
470 rpctls_verify_capath);
471 #else
472 ret = SSL_CTX_load_verify_locations(ctx,
473 rpctls_verify_cafile, rpctls_verify_capath);
474 #endif
475 if (ret == 0) {
476 rpctls_verbose_out("rpctls_setupcl_ssl: "
477 "Can't load verify locations\n");
478 SSL_CTX_free(ctx);
479 return (NULL);
480 }
481 /*
482 * The man page says that the
483 * SSL_CTX_set0_CA_list() call is not normally
484 * needed, but I believe it is harmless.
485 */
486 if (rpctls_verify_cafile != NULL)
487 SSL_CTX_set0_CA_list(ctx,
488 SSL_load_client_CA_file(rpctls_verify_cafile));
489 }
490
491 /*
492 * The RFC specifies that RPC-over-TLS must use TLS1.3.
493 * However, early FreeBSD versions (13.0, 13.1) did not
494 * support RX for KTLS1.3, so TLS1.2 needs to be used for
495 * these servers.
496 */
497 ret = SSL_CTX_set_min_proto_version(ctx, rpctls_tlsvers);
498 if (ret == 0) {
499 rpctls_verbose_out("rpctls_setupcl_ssl: "
500 "SSL_CTX_set_min_proto_version failed\n");
501 SSL_CTX_free(ctx);
502 return (NULL);
503 }
504 ret = SSL_CTX_set_max_proto_version(ctx, rpctls_tlsvers);
505 if (ret == 0) {
506 rpctls_verbose_out("rpctls_setupcl_ssl: "
507 "SSL_CTX_set_max_proto_version failed\n");
508 SSL_CTX_free(ctx);
509 return (NULL);
510 }
511
512 #ifdef SSL_OP_ENABLE_KTLS
513 SSL_CTX_set_options(ctx, SSL_OP_ENABLE_KTLS);
514 #endif
515 #ifdef SSL_MODE_NO_KTLS_TX
516 SSL_CTX_clear_mode(ctx, SSL_MODE_NO_KTLS_TX | SSL_MODE_NO_KTLS_RX);
517 #endif
518 return (ctx);
519 }
520
521 static SSL *
rpctls_connect(SSL_CTX * ctx,int s,char * certname,u_int certlen,X509 ** certp)522 rpctls_connect(SSL_CTX *ctx, int s, char *certname, u_int certlen, X509 **certp)
523 {
524 SSL *ssl;
525 X509 *cert;
526 struct sockaddr_storage ad;
527 struct sockaddr *sad;
528 char hostnam[NI_MAXHOST], path[PATH_MAX];
529 int gethostret, ret;
530 char *cp, *cp2;
531 size_t len, rlen;
532 long verfret;
533
534 *certp = NULL;
535 sad = (struct sockaddr *)&ad;
536 ssl = SSL_new(ctx);
537 if (ssl == NULL) {
538 rpctls_verbose_out("rpctls_connect: "
539 "SSL_new failed\n");
540 return (NULL);
541 }
542 if (SSL_set_fd(ssl, s) != 1) {
543 rpctls_verbose_out("rpctls_connect: "
544 "SSL_set_fd failed\n");
545 SSL_free(ssl);
546 return (NULL);
547 }
548
549 /*
550 * If rpctls_cert is true and certname is set, a alternate certificate
551 * and key exists in files named <certname>.pem and <certname>key.pem
552 * in rpctls_certdir that is to be used for mutual authentication.
553 */
554 if (rpctls_cert && certlen > 0) {
555 len = strlcpy(path, rpctls_certdir, sizeof(path));
556 rlen = sizeof(path) - len;
557 if (rlen <= certlen) {
558 SSL_free(ssl);
559 return (NULL);
560 }
561 memcpy(&path[len], certname, certlen);
562 rlen -= certlen;
563 len += certlen;
564 path[len] = '\0';
565 if (strlcpy(&path[len], ".pem", rlen) != 4) {
566 SSL_free(ssl);
567 return (NULL);
568 }
569 ret = SSL_use_certificate_file(ssl, path, SSL_FILETYPE_PEM);
570 if (ret != 1) {
571 rpctls_verbose_out("rpctls_connect: can't use "
572 "certificate file path=%s ret=%d\n", path, ret);
573 SSL_free(ssl);
574 return (NULL);
575 }
576 if (strlcpy(&path[len], "key.pem", rlen) != 7) {
577 SSL_free(ssl);
578 return (NULL);
579 }
580 ret = SSL_use_PrivateKey_file(ssl, path, SSL_FILETYPE_PEM);
581 if (ret != 1) {
582 rpctls_verbose_out("rpctls_connect: Can't use "
583 "private key path=%s ret=%d\n", path, ret);
584 SSL_free(ssl);
585 return (NULL);
586 }
587 }
588
589 ret = SSL_connect(ssl);
590 if (ret != 1) {
591 rpctls_verbose_out("rpctls_connect: "
592 "SSL_connect failed %d: %s\n",
593 ret, ERR_error_string(ERR_get_error(), NULL));
594 SSL_free(ssl);
595 return (NULL);
596 }
597
598 #if OPENSSL_VERSION_NUMBER >= 0x30000000
599 cert = SSL_get1_peer_certificate(ssl);
600 #else
601 cert = SSL_get_peer_certificate(ssl);
602 #endif
603 if (cert == NULL) {
604 rpctls_verbose_out("rpctls_connect: get peer"
605 " certificate failed\n");
606 SSL_free(ssl);
607 return (NULL);
608 }
609 gethostret = rpctls_gethost(s, sad, hostnam, sizeof(hostnam));
610 if (gethostret == 0)
611 hostnam[0] = '\0';
612 verfret = SSL_get_verify_result(ssl);
613 if (verfret == X509_V_OK && (rpctls_verify_cafile != NULL ||
614 rpctls_verify_capath != NULL) && (gethostret == 0 ||
615 rpctls_checkhost(sad, cert, X509_CHECK_FLAG_NO_WILDCARDS) != 1))
616 verfret = X509_V_ERR_HOSTNAME_MISMATCH;
617 if (verfret != X509_V_OK && (rpctls_verify_cafile != NULL ||
618 rpctls_verify_capath != NULL)) {
619 if (verfret != X509_V_OK) {
620 cp = X509_NAME_oneline(X509_get_issuer_name(cert),
621 NULL, 0);
622 cp2 = X509_NAME_oneline(X509_get_subject_name(cert),
623 NULL, 0);
624 if (rpctls_debug_level == 0)
625 syslog(LOG_INFO | LOG_DAEMON,
626 "rpctls_connect: client IP %s "
627 "issuerName=%s subjectName=%s verify "
628 "failed %s\n", hostnam, cp, cp2,
629 X509_verify_cert_error_string(verfret));
630 else
631 fprintf(stderr,
632 "rpctls_connect: client IP %s "
633 "issuerName=%s subjectName=%s verify "
634 "failed %s\n", hostnam, cp, cp2,
635 X509_verify_cert_error_string(verfret));
636 }
637 X509_free(cert);
638 SSL_free(ssl);
639 return (NULL);
640 }
641
642 /* Check to see if ktls is enabled on the connection. */
643 ret = BIO_get_ktls_send(SSL_get_wbio(ssl));
644 rpctls_verbose_out("rpctls_connect: BIO_get_ktls_send=%d\n", ret);
645 if (ret != 0) {
646 ret = BIO_get_ktls_recv(SSL_get_rbio(ssl));
647 rpctls_verbose_out("rpctls_connect: BIO_get_ktls_recv=%d\n",
648 ret);
649 }
650 if (ret == 0) {
651 if (rpctls_debug_level == 0)
652 syslog(LOG_ERR, "ktls not working\n");
653 else
654 fprintf(stderr, "ktls not working\n");
655 X509_free(cert);
656 SSL_free(ssl);
657 return (NULL);
658 }
659 if (ret == X509_V_OK && (rpctls_verify_cafile != NULL ||
660 rpctls_verify_capath != NULL) && rpctls_crlfile != NULL)
661 *certp = cert;
662 else
663 X509_free(cert);
664
665 return (ssl);
666 }
667
668 static void
rpctls_huphandler(int sig __unused)669 rpctls_huphandler(int sig __unused)
670 {
671
672 rpctls_gothup = true;
673 }
674