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usr.sbin/rpc.tlsclntd/rpc.tlsclntd.c

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
* Authors: Doug Rabson <dfr@rabson.org>
* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Extensively modified from /usr/src/usr.sbin/gssd.c r344402 for
* the client side of kernel RPC-over-TLS by Rick Macklem.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/linker.h>
#include <sys/module.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/syslog.h>
#include <sys/time.h>
#include <err.h>
#include <getopt.h>
#include <libutil.h>
#include <netdb.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <rpc/rpc.h>
#include <rpc/rpc_com.h>
#include <rpc/rpcsec_tls.h>
#include <openssl/opensslconf.h>
#include <openssl/bio.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/x509v3.h>
#include "rpctlscd.h"
#include "rpc.tlscommon.h"
#ifndef _PATH_RPCTLSCDSOCK
#define _PATH_RPCTLSCDSOCK "/var/run/rpc.tlsclntd.sock"
#endif
#ifndef _PATH_CERTANDKEY
#define _PATH_CERTANDKEY "/etc/rpc.tlsclntd/"
#endif
#ifndef _PATH_RPCTLSCDPID
#define _PATH_RPCTLSCDPID "/var/run/rpc.tlsclntd.pid"
#endif
#ifndef _PREFERRED_CIPHERS
#define _PREFERRED_CIPHERS "AES128-GCM-SHA256"
#endif
rmacklemAuthorUnsubmitted
Done
Inline Actions

Does anyone know what the best setting is for
SSL_CTX_set_cipher_lisr() when using KTLS?

I found the above in some example code and
it seems to work, but I have no idea if there
is a better choice?

rmacklem: Does anyone know what the best setting is for SSL_CTX_set_cipher_lisr() when using KTLS? I…
jhbUnsubmitted
Done
Inline Actions

Hmmm, I would say to let OpenSSL use its default settings, but you might want to restrict this a bit to match the ciphers supported by KTLS. You can use 'openssl ciphers -s <string>' to see what ciphers match the strings you use. I would use "AESGCM" for now which matches all of the cipher variants using AES-GCM. Once Chacha20-Poly1305 support for KTLS lands, you should change this to "AESGCM:CHACHA20". The older AES-CBC variants would be covered by "AES+SHA", but we don't have RX support for those in all cases and they really shouldn't be used unless someone needs them. You might consider adding a command line option to allow the user to override it? Keep in mind that TLS 1.3 uses a different API for this than TLS <= 1.2, and we don't currently support KTLS RX for TLS 1.3.

jhb: Hmmm, I would say to let OpenSSL use its default settings, but you might want to restrict this…
/* Global variables also used by rpc.tlscommon.c. */
int rpctls_debug_level;
bool rpctls_verbose;
SSL_CTX *rpctls_ctx = NULL;
const char *rpctls_verify_cafile = NULL;
const char *rpctls_verify_capath = NULL;
char *rpctls_crlfile = NULL;
bool rpctls_cert = false;
bool rpctls_gothup = false;
struct ssl_list rpctls_ssllist;
static struct pidfh *rpctls_pfh = NULL;
static const char *rpctls_certdir = _PATH_CERTANDKEY;
static uint64_t rpctls_ssl_refno = 0;
static uint64_t rpctls_ssl_sec = 0;
static uint64_t rpctls_ssl_usec = 0;
static void rpctlscd_terminate(int);
static SSL_CTX *rpctls_setupcl_ssl(void);
static SSL *rpctls_connect(SSL_CTX *ctx, int s, char *certname,
u_int certlen, X509 **certp);
static void rpctls_huphandler(int sig __unused);
extern void rpctlscd_1(struct svc_req *rqstp, SVCXPRT *transp);
static struct option longopts[] = {
{ "certdir", required_argument, NULL, 'D' },
{ "debuglevel", no_argument, NULL, 'd' },
{ "verifylocs", required_argument, NULL, 'l' },
{ "mutualverf", no_argument, NULL, 'm' },
{ "verifydir", required_argument, NULL, 'p' },
{ "crl", required_argument, NULL, 'r' },
{ "verbose", no_argument, NULL, 'v' },
{ NULL, 0, NULL, 0 }
};
int
main(int argc, char **argv)
{
/*
* We provide an RPC service on a local-domain socket. The
* kernel rpctls code will upcall to this daemon to do the initial
* TLS handshake.
*/
struct sockaddr_un sun;
int ch, fd, oldmask;
SVCXPRT *xprt;
bool tls_enable;
struct timeval tm;
struct timezone tz;
pid_t otherpid;
size_t tls_enable_len;
/* Check that another rpctlscd isn't already running. */
rpctls_pfh = pidfile_open(_PATH_RPCTLSCDPID, 0600, &otherpid);
if (rpctls_pfh == NULL) {
if (errno == EEXIST)
errx(1, "rpctlscd already running, pid: %d.", otherpid);
warn("cannot open or create pidfile");
}
/* Check to see that the ktls is enabled. */
tls_enable_len = sizeof(tls_enable);
if (sysctlbyname("kern.ipc.tls.enable", &tls_enable, &tls_enable_len,
NULL, 0) != 0 || !tls_enable)
errx(1, "Kernel TLS not enabled");
/* Get the time when this daemon is started. */
gettimeofday(&tm, &tz);
rpctls_ssl_sec = tm.tv_sec;
rpctls_ssl_usec = tm.tv_usec;
rpctls_verbose = false;
while ((ch = getopt_long(argc, argv, "D:dl:mp:r:v", longopts, NULL)) !=
-1) {
switch (ch) {
case 'D':
rpctls_certdir = optarg;
break;
case 'd':
rpctls_debug_level++;
break;
case 'l':
rpctls_verify_cafile = optarg;
break;
case 'm':
rpctls_cert = true;
break;
case 'p':
rpctls_verify_capath = optarg;
break;
case 'r':
rpctls_crlfile = optarg;
break;
case 'v':
rpctls_verbose = true;
break;
default:
fprintf(stderr, "usage: %s "
"[-D/--certdir certdir] [-d/--debuglevel] "
"[-l/--verifylocs CAfile] [-m/--mutualverf] "
"[-p/--verifydir CApath] [-r/--crl CRLfile] "
"[-v/--verbose]\n", argv[0]);
exit(1);
break;
}
}
if (rpctls_crlfile != NULL && rpctls_verify_cafile == NULL &&
rpctls_verify_capath == NULL)
errx(1, "-r requires the -l <CAfile> and/or "
"-p <CApath> options");
if (modfind("krpc") < 0) {
/* Not present in kernel, try loading it */
if (kldload("krpc") < 0 || modfind("krpc") < 0)
errx(1, "Kernel RPC is not available");
}
/*
* Set up the SSL_CTX *.
* Do it now, before daemonizing, in case the private key
* is encrypted and requires a passphrase to be entered.
*/
rpctls_ctx = rpctls_setupcl_ssl();
if (rpctls_ctx == NULL) {
if (rpctls_debug_level == 0) {
syslog(LOG_ERR, "Can't set up TLS context");
exit(1);
}
err(1, "Can't set up TLS context");
}
LIST_INIT(&rpctls_ssllist);
if (!rpctls_debug_level) {
if (daemon(0, 0) != 0)
err(1, "Can't daemonize");
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
signal(SIGHUP, SIG_IGN);
}
signal(SIGTERM, rpctlscd_terminate);
signal(SIGPIPE, SIG_IGN);
signal(SIGHUP, rpctls_huphandler);
pidfile_write(rpctls_pfh);
memset(&sun, 0, sizeof sun);
sun.sun_family = AF_LOCAL;
unlink(_PATH_RPCTLSCDSOCK);
strcpy(sun.sun_path, _PATH_RPCTLSCDSOCK);
sun.sun_len = SUN_LEN(&sun);
fd = socket(AF_LOCAL, SOCK_STREAM, 0);
if (fd < 0) {
if (rpctls_debug_level == 0) {
syslog(LOG_ERR, "Can't create local rpctlscd socket");
exit(1);
}
err(1, "Can't create local rpctlscd socket");
}
oldmask = umask(S_IXUSR|S_IRWXG|S_IRWXO);
if (bind(fd, (struct sockaddr *)&sun, sun.sun_len) < 0) {
if (rpctls_debug_level == 0) {
syslog(LOG_ERR, "Can't bind local rpctlscd socket");
exit(1);
}
err(1, "Can't bind local rpctlscd socket");
}
umask(oldmask);
if (listen(fd, SOMAXCONN) < 0) {
if (rpctls_debug_level == 0) {
syslog(LOG_ERR,
"Can't listen on local rpctlscd socket");
exit(1);
}
err(1, "Can't listen on local rpctlscd socket");
}
xprt = svc_vc_create(fd, RPC_MAXDATASIZE, RPC_MAXDATASIZE);
if (!xprt) {
if (rpctls_debug_level == 0) {
syslog(LOG_ERR,
"Can't create transport for local rpctlscd socket");
exit(1);
}
err(1, "Can't create transport for local rpctlscd socket");
}
if (!svc_reg(xprt, RPCTLSCD, RPCTLSCDVERS, rpctlscd_1, NULL)) {
if (rpctls_debug_level == 0) {
syslog(LOG_ERR,
"Can't register service for local rpctlscd socket");
exit(1);
}
err(1, "Can't register service for local rpctlscd socket");
}
rpctls_syscall(RPCTLS_SYSC_CLSETPATH, _PATH_RPCTLSCDSOCK);
rpctls_svc_run();
rpctls_syscall(RPCTLS_SYSC_CLSHUTDOWN, "");
SSL_CTX_free(rpctls_ctx);
EVP_cleanup();
return (0);
}
bool_t
rpctlscd_null_1_svc(__unused void *argp, __unused void *result,
__unused struct svc_req *rqstp)
{
rpctls_verbose_out("rpctlscd_null: done\n");
return (TRUE);
}
bool_t
rpctlscd_connect_1_svc(struct rpctlscd_connect_arg *argp,
struct rpctlscd_connect_res *result, __unused struct svc_req *rqstp)
{
int s;
SSL *ssl;
struct ssl_entry *newslp;
X509 *cert;
rpctls_verbose_out("rpctlsd_connect: started\n");
/* Get the socket fd from the kernel. */
s = rpctls_syscall(RPCTLS_SYSC_CLSOCKET, "");
if (s < 0) {
result->reterr = RPCTLSERR_NOSOCKET;
return (TRUE);
}
/* Do a TLS connect handshake. */
ssl = rpctls_connect(rpctls_ctx, s, argp->certname.certname_val,
argp->certname.certname_len, &cert);
if (ssl == NULL) {
rpctls_verbose_out("rpctlsd_connect: can't do TLS "
"handshake\n");
result->reterr = RPCTLSERR_NOSSL;
} else {
result->reterr = RPCTLSERR_OK;
result->sec = rpctls_ssl_sec;
result->usec = rpctls_ssl_usec;
result->ssl = ++rpctls_ssl_refno;
/* Hard to believe this will ever wrap around.. */
if (rpctls_ssl_refno == 0)
result->ssl = ++rpctls_ssl_refno;
}
if (ssl == NULL) {
/*
* For RPC-over-TLS, this upcall is expected
* to close off the socket.
*/
close(s);
return (TRUE);
}
/* Maintain list of all current SSL *'s */
newslp = malloc(sizeof(*newslp));
newslp->refno = rpctls_ssl_refno;
newslp->s = s;
newslp->shutoff = false;
newslp->ssl = ssl;
newslp->cert = cert;
LIST_INSERT_HEAD(&rpctls_ssllist, newslp, next);
return (TRUE);
}
bool_t
rpctlscd_handlerecord_1_svc(struct rpctlscd_handlerecord_arg *argp,
struct rpctlscd_handlerecord_res *result, __unused struct svc_req *rqstp)
{
struct ssl_entry *slp;
int ret;
char junk;
slp = NULL;
if (argp->sec == rpctls_ssl_sec && argp->usec ==
rpctls_ssl_usec) {
LIST_FOREACH(slp, &rpctls_ssllist, next) {
if (slp->refno == argp->ssl)
break;
}
}
if (slp != NULL) {
rpctls_verbose_out("rpctlscd_handlerecord fd=%d\n",
slp->s);
/*
* An SSL_read() of 0 bytes should fail, but it should
* handle the non-application data record before doing so.
*/
ret = SSL_read(slp->ssl, &junk, 0);
if (ret <= 0) {
/* Check to see if this was a close alert. */
ret = SSL_get_shutdown(slp->ssl);
if ((ret & (SSL_SENT_SHUTDOWN |
SSL_RECEIVED_SHUTDOWN)) == SSL_RECEIVED_SHUTDOWN)
SSL_shutdown(slp->ssl);
} else {
if (rpctls_debug_level == 0)
syslog(LOG_ERR, "SSL_read returned %d", ret);
else
fprintf(stderr, "SSL_read returned %d\n", ret);
}
result->reterr = RPCTLSERR_OK;
} else
result->reterr = RPCTLSERR_NOSSL;
return (TRUE);
}
bool_t
rpctlscd_disconnect_1_svc(struct rpctlscd_disconnect_arg *argp,
struct rpctlscd_disconnect_res *result, __unused struct svc_req *rqstp)
{
struct ssl_entry *slp;
int ret;
slp = NULL;
if (argp->sec == rpctls_ssl_sec && argp->usec ==
rpctls_ssl_usec) {
LIST_FOREACH(slp, &rpctls_ssllist, next) {
if (slp->refno == argp->ssl)
break;
}
}
if (slp != NULL) {
rpctls_verbose_out("rpctlscd_disconnect: fd=%d closed\n",
slp->s);
LIST_REMOVE(slp, next);
if (!slp->shutoff) {
ret = SSL_get_shutdown(slp->ssl);
/*
* Do an SSL_shutdown() unless a close alert has
* already been sent.
*/
if ((ret & SSL_SENT_SHUTDOWN) == 0)
SSL_shutdown(slp->ssl);
}
SSL_free(slp->ssl);
if (slp->cert != NULL)
X509_free(slp->cert);
/*
* For RPC-over-TLS, this upcall is expected
* to close off the socket.
*/
if (!slp->shutoff)
shutdown(slp->s, SHUT_WR);
close(slp->s);
free(slp);
result->reterr = RPCTLSERR_OK;
} else
result->reterr = RPCTLSERR_NOCLOSE;
return (TRUE);
}
int
rpctlscd_1_freeresult(__unused SVCXPRT *transp, __unused xdrproc_t xdr_result,
__unused caddr_t result)
{
return (TRUE);
}
static void
rpctlscd_terminate(int sig __unused)
{
rpctls_syscall(RPCTLS_SYSC_CLSHUTDOWN, "");
pidfile_remove(rpctls_pfh);
exit(0);
}
static SSL_CTX *
rpctls_setupcl_ssl(void)
{
SSL_CTX *ctx;
long flags;
char path[PATH_MAX];
size_t len, rlen;
int ret;
SSL_library_init();
SSL_load_error_strings();
OpenSSL_add_all_algorithms();
ctx = SSL_CTX_new(TLS_client_method());
if (ctx == NULL) {
rpctls_verbose_out("rpctls_setupcl_ssl: SSL_CTX_new "
"failed\n");
return (NULL);
}
SSL_CTX_set_ecdh_auto(ctx, 1);
/*
* Set preferred ciphers, since KERN_TLS only supports a
* few of them.
*/
ret = SSL_CTX_set_cipher_list(ctx, _PREFERRED_CIPHERS);
if (ret == 0) {
rpctls_verbose_out("rpctls_setupcl_ssl: "
"SSL_CTX_set_cipher_list failed to set any ciphers\n");
SSL_CTX_free(ctx);
return (NULL);
}
/*
* If rpctls_cert is true, a certificate and key exists in
* rpctls_certdir, so that it can do mutual authentication.
*/
if (rpctls_cert) {
/* Get the cert.pem and certkey.pem files. */
len = strlcpy(path, rpctls_certdir, sizeof(path));
rlen = sizeof(path) - len;
if (strlcpy(&path[len], "cert.pem", rlen) != 8) {
SSL_CTX_free(ctx);
return (NULL);
}
ret = SSL_CTX_use_certificate_file(ctx, path,
SSL_FILETYPE_PEM);
if (ret != 1) {
rpctls_verbose_out("rpctls_setupcl_ssl: can't use "
"certificate file path=%s ret=%d\n", path, ret);
SSL_CTX_free(ctx);
return (NULL);
}
if (strlcpy(&path[len], "certkey.pem", rlen) != 11) {
SSL_CTX_free(ctx);
return (NULL);
}
ret = SSL_CTX_use_PrivateKey_file(ctx, path,
SSL_FILETYPE_PEM);
if (ret != 1) {
rpctls_verbose_out("rpctls_setupcl_ssl: Can't use "
"private key path=%s ret=%d\n", path, ret);
SSL_CTX_free(ctx);
return (NULL);
}
}
if (rpctls_verify_cafile != NULL || rpctls_verify_capath != NULL) {
if (rpctls_crlfile != NULL) {
ret = rpctls_loadcrlfile(ctx);
if (ret == 0) {
rpctls_verbose_out("rpctls_setupcl_ssl: "
"Load CRLfile failed\n");
SSL_CTX_free(ctx);
return (NULL);
}
}
#if OPENSSL_VERSION_NUMBER >= 0x30000000
ret = 1;
if (rpctls_verify_cafile != NULL)
ret = SSL_CTX_load_verify_file(ctx,
rpctls_verify_cafile);
if (ret != 0 && rpctls_verify_capath != NULL)
ret = SSL_CTX_load_verify_dir(ctx,
rpctls_verify_capath);
#else
ret = SSL_CTX_load_verify_locations(ctx,
rpctls_verify_cafile, rpctls_verify_capath);
#endif
if (ret == 0) {
rpctls_verbose_out("rpctls_setupcl_ssl: "
"Can't load verify locations\n");
SSL_CTX_free(ctx);
return (NULL);
}
/*
* The man page says that the
* SSL_CTX_set0_CA_list() call is not normally
* needed, but I believe it is harmless.
*/
if (rpctls_verify_cafile != NULL)
SSL_CTX_set0_CA_list(ctx,
SSL_load_client_CA_file(rpctls_verify_cafile));
}
/* RPC-over-TLS must use TLSv1.3, according to the IETF draft.*/
#ifdef notyet
flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_TLSv1 |
SSL_OP_NO_TLSv1_1 | SSL_OP_NO_TLSv1_2;
#else
flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_TLSv1_3;
#endif
SSL_CTX_set_options(ctx, flags);
SSL_CTX_clear_mode(ctx, SSL_MODE_NO_KTLS_TX | SSL_MODE_NO_KTLS_RX);
return (ctx);
}
static SSL *
rpctls_connect(SSL_CTX *ctx, int s, char *certname, u_int certlen, X509 **certp)
{
SSL *ssl;
X509 *cert;
struct sockaddr_storage ad;
struct sockaddr *sad;
char hostnam[NI_MAXHOST], path[PATH_MAX];
int gethostret, ret;
char *cp, *cp2;
size_t len, rlen;
long verfret;
*certp = NULL;
sad = (struct sockaddr *)&ad;
ssl = SSL_new(ctx);
if (ssl == NULL) {
rpctls_verbose_out("rpctls_connect: "
"SSL_new failed\n");
return (NULL);
}
if (SSL_set_fd(ssl, s) != 1) {
rpctls_verbose_out("rpctls_connect: "
"SSL_set_fd failed\n");
SSL_free(ssl);
return (NULL);
}
/*
* If rpctls_cert is true and certname is set, a alternate certificate
* and key exists in files named <certname>.pem and <certname>key.pem
* in rpctls_certdir that is to be used for mutual authentication.
*/
if (rpctls_cert && certlen > 0) {
len = strlcpy(path, rpctls_certdir, sizeof(path));
rlen = sizeof(path) - len;
if (rlen <= certlen) {
SSL_free(ssl);
return (NULL);
}
memcpy(&path[len], certname, certlen);
rlen -= certlen;
len += certlen;
path[len] = '\0';
if (strlcpy(&path[len], ".pem", rlen) != 4) {
SSL_free(ssl);
return (NULL);
}
ret = SSL_use_certificate_file(ssl, path, SSL_FILETYPE_PEM);
if (ret != 1) {
rpctls_verbose_out("rpctls_connect: can't use "
"certificate file path=%s ret=%d\n", path, ret);
SSL_free(ssl);
return (NULL);
}
if (strlcpy(&path[len], "key.pem", rlen) != 7) {
SSL_free(ssl);
return (NULL);
}
ret = SSL_use_PrivateKey_file(ssl, path, SSL_FILETYPE_PEM);
if (ret != 1) {
rpctls_verbose_out("rpctls_connect: Can't use "
"private key path=%s ret=%d\n", path, ret);
SSL_free(ssl);
return (NULL);
}
}
ret = SSL_connect(ssl);
if (ret != 1) {
rpctls_verbose_out("rpctls_connect: "
"SSL_connect failed %d\n",
ret);
SSL_free(ssl);
return (NULL);
}
cert = SSL_get_peer_certificate(ssl);
if (cert == NULL) {
rpctls_verbose_out("rpctls_connect: get peer"
" certificate failed\n");
SSL_free(ssl);
return (NULL);
}
gethostret = rpctls_gethost(s, sad, hostnam, sizeof(hostnam));
if (gethostret == 0)
hostnam[0] = '\0';
verfret = SSL_get_verify_result(ssl);
if (verfret == X509_V_OK && (rpctls_verify_cafile != NULL ||
rpctls_verify_capath != NULL) && (gethostret == 0 ||
rpctls_checkhost(sad, cert, X509_CHECK_FLAG_NO_WILDCARDS) != 1))
verfret = X509_V_ERR_HOSTNAME_MISMATCH;
if (verfret != X509_V_OK && (rpctls_verify_cafile != NULL ||
rpctls_verify_capath != NULL)) {
if (verfret != X509_V_OK) {
cp = X509_NAME_oneline(X509_get_issuer_name(cert),
NULL, 0);
cp2 = X509_NAME_oneline(X509_get_subject_name(cert),
NULL, 0);
if (rpctls_debug_level == 0)
syslog(LOG_INFO | LOG_DAEMON,
"rpctls_connect: client IP %s "
"issuerName=%s subjectName=%s verify "
"failed %s\n", hostnam, cp, cp2,
X509_verify_cert_error_string(verfret));
else
fprintf(stderr,
"rpctls_connect: client IP %s "
"issuerName=%s subjectName=%s verify "
"failed %s\n", hostnam, cp, cp2,
X509_verify_cert_error_string(verfret));
}
X509_free(cert);
SSL_free(ssl);
return (NULL);
}
/* Check to see if ktls is enabled on the connection. */
ret = BIO_get_ktls_send(SSL_get_wbio(ssl));
rpctls_verbose_out("rpctls_connect: BIO_get_ktls_send=%d\n", ret);
if (ret != 0) {
ret = BIO_get_ktls_recv(SSL_get_rbio(ssl));
rpctls_verbose_out("rpctls_connect: BIO_get_ktls_recv=%d\n",
ret);
}
if (ret == 0) {
if (rpctls_debug_level == 0)
syslog(LOG_ERR, "ktls not working\n");
else
fprintf(stderr, "ktls not working\n");
X509_free(cert);
SSL_free(ssl);
return (NULL);
}
if (ret == X509_V_OK && (rpctls_verify_cafile != NULL ||
rpctls_verify_capath != NULL) && rpctls_crlfile != NULL)
*certp = cert;
else
X509_free(cert);
return (ssl);
}
static void
rpctls_huphandler(int sig __unused)
{
rpctls_gothup = true;
}