1b9cbc85dSRick Macklem /*- 2b9cbc85dSRick Macklem * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3b9cbc85dSRick Macklem * 4b9cbc85dSRick Macklem * Copyright (c) 2008 Isilon Inc http://www.isilon.com/ 5b9cbc85dSRick Macklem * Authors: Doug Rabson <dfr@rabson.org> 6b9cbc85dSRick Macklem * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org> 7b9cbc85dSRick Macklem * 8b9cbc85dSRick Macklem * Redistribution and use in source and binary forms, with or without 9b9cbc85dSRick Macklem * modification, are permitted provided that the following conditions 10b9cbc85dSRick Macklem * are met: 11b9cbc85dSRick Macklem * 1. Redistributions of source code must retain the above copyright 12b9cbc85dSRick Macklem * notice, this list of conditions and the following disclaimer. 13b9cbc85dSRick Macklem * 2. Redistributions in binary form must reproduce the above copyright 14b9cbc85dSRick Macklem * notice, this list of conditions and the following disclaimer in the 15b9cbc85dSRick Macklem * documentation and/or other materials provided with the distribution. 16b9cbc85dSRick Macklem * 17b9cbc85dSRick Macklem * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18b9cbc85dSRick Macklem * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19b9cbc85dSRick Macklem * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20b9cbc85dSRick Macklem * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21b9cbc85dSRick Macklem * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22b9cbc85dSRick Macklem * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23b9cbc85dSRick Macklem * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24b9cbc85dSRick Macklem * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25b9cbc85dSRick Macklem * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26b9cbc85dSRick Macklem * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27b9cbc85dSRick Macklem * SUCH DAMAGE. 28b9cbc85dSRick Macklem */ 29b9cbc85dSRick Macklem 30b9cbc85dSRick Macklem /* 31b9cbc85dSRick Macklem * Extensively modified from /usr/src/usr.sbin/gssd.c r344402 for 32b9cbc85dSRick Macklem * the server side of kernel RPC-over-TLS by Rick Macklem. 33b9cbc85dSRick Macklem */ 34b9cbc85dSRick Macklem 35b9cbc85dSRick Macklem #include <sys/cdefs.h> 36b9cbc85dSRick Macklem __FBSDID("$FreeBSD$"); 37b9cbc85dSRick Macklem 38b9cbc85dSRick Macklem #include <sys/param.h> 39b9cbc85dSRick Macklem #include <sys/types.h> 40b9cbc85dSRick Macklem #include <sys/linker.h> 41b9cbc85dSRick Macklem #include <sys/module.h> 42b9cbc85dSRick Macklem #include <sys/queue.h> 43b9cbc85dSRick Macklem #include <sys/stat.h> 44b9cbc85dSRick Macklem #include <sys/sysctl.h> 45b9cbc85dSRick Macklem #include <sys/syslog.h> 46b9cbc85dSRick Macklem #include <sys/time.h> 47b9cbc85dSRick Macklem #include <err.h> 48b9cbc85dSRick Macklem #include <getopt.h> 49b9cbc85dSRick Macklem #include <libutil.h> 50b9cbc85dSRick Macklem #include <netdb.h> 51b9cbc85dSRick Macklem #include <pwd.h> 52b9cbc85dSRick Macklem #include <signal.h> 53b9cbc85dSRick Macklem #include <stdarg.h> 54b9cbc85dSRick Macklem #include <stdio.h> 55b9cbc85dSRick Macklem #include <stdlib.h> 56b9cbc85dSRick Macklem #include <stdbool.h> 57b9cbc85dSRick Macklem #include <string.h> 58b9cbc85dSRick Macklem #include <unistd.h> 59b9cbc85dSRick Macklem 60b9cbc85dSRick Macklem #include <rpc/rpc.h> 61b9cbc85dSRick Macklem #include <rpc/rpc_com.h> 62b9cbc85dSRick Macklem #include <rpc/rpcsec_tls.h> 63b9cbc85dSRick Macklem 64b9cbc85dSRick Macklem #include <openssl/opensslconf.h> 65b9cbc85dSRick Macklem #include <openssl/bio.h> 66b9cbc85dSRick Macklem #include <openssl/ssl.h> 67b9cbc85dSRick Macklem #include <openssl/err.h> 68b9cbc85dSRick Macklem #include <openssl/x509v3.h> 69b9cbc85dSRick Macklem 70b9cbc85dSRick Macklem #include "rpctlssd.h" 71b9cbc85dSRick Macklem #include "rpc.tlscommon.h" 72b9cbc85dSRick Macklem 73b9cbc85dSRick Macklem #ifndef _PATH_RPCTLSSDSOCK 74b9cbc85dSRick Macklem #define _PATH_RPCTLSSDSOCK "/var/run/rpc.tlsservd.sock" 75b9cbc85dSRick Macklem #endif 76b9cbc85dSRick Macklem #ifndef _PATH_CERTANDKEY 77b9cbc85dSRick Macklem #define _PATH_CERTANDKEY "/etc/rpc.tlsservd/" 78b9cbc85dSRick Macklem #endif 79b9cbc85dSRick Macklem #ifndef _PATH_RPCTLSSDPID 80b9cbc85dSRick Macklem #define _PATH_RPCTLSSDPID "/var/run/rpc.tlsservd.pid" 81b9cbc85dSRick Macklem #endif 82b9cbc85dSRick Macklem #ifndef _PREFERRED_CIPHERS 83b9cbc85dSRick Macklem #define _PREFERRED_CIPHERS "AES128-GCM-SHA256" 84b9cbc85dSRick Macklem #endif 85b9cbc85dSRick Macklem 86b9cbc85dSRick Macklem /* Global variables also used by rpc.tlscommon.c. */ 87b9cbc85dSRick Macklem int rpctls_debug_level; 88b9cbc85dSRick Macklem bool rpctls_verbose; 89b9cbc85dSRick Macklem SSL_CTX *rpctls_ctx = NULL; 90b9cbc85dSRick Macklem const char *rpctls_verify_cafile = NULL; 91b9cbc85dSRick Macklem const char *rpctls_verify_capath = NULL; 92b9cbc85dSRick Macklem char *rpctls_crlfile = NULL; 93b9cbc85dSRick Macklem bool rpctls_gothup = false; 94b9cbc85dSRick Macklem struct ssl_list rpctls_ssllist; 95b9cbc85dSRick Macklem 96b9cbc85dSRick Macklem static struct pidfh *rpctls_pfh = NULL; 97b9cbc85dSRick Macklem static bool rpctls_do_mutual = false; 98b9cbc85dSRick Macklem static const char *rpctls_certdir = _PATH_CERTANDKEY; 99b9cbc85dSRick Macklem static bool rpctls_comparehost = false; 100b9cbc85dSRick Macklem static unsigned int rpctls_wildcard = X509_CHECK_FLAG_NO_WILDCARDS; 101b9cbc85dSRick Macklem static uint64_t rpctls_ssl_refno = 0; 102b9cbc85dSRick Macklem static uint64_t rpctls_ssl_sec = 0; 103b9cbc85dSRick Macklem static uint64_t rpctls_ssl_usec = 0; 104b9cbc85dSRick Macklem static bool rpctls_cnuser = false; 105b9cbc85dSRick Macklem static char *rpctls_dnsname; 106b9cbc85dSRick Macklem static const char *rpctls_cnuseroid = "1.3.6.1.4.1.2238.1.1.1"; 107712aac13SRick Macklem static const char *rpctls_ciphers = NULL; 1080637b12bSRick Macklem static int rpctls_mintls = TLS1_3_VERSION; 109b9cbc85dSRick Macklem 110b9cbc85dSRick Macklem static void rpctlssd_terminate(int); 111b9cbc85dSRick Macklem static SSL_CTX *rpctls_setup_ssl(const char *certdir); 112b9cbc85dSRick Macklem static SSL *rpctls_server(SSL_CTX *ctx, int s, 113b9cbc85dSRick Macklem uint32_t *flags, uint32_t *uidp, 114b9cbc85dSRick Macklem int *ngrps, uint32_t *gidp, X509 **certp); 115b9cbc85dSRick Macklem static int rpctls_cnname(X509 *cert, uint32_t *uidp, 116b9cbc85dSRick Macklem int *ngrps, uint32_t *gidp); 117b9cbc85dSRick Macklem static char *rpctls_getdnsname(char *dnsname); 118b9cbc85dSRick Macklem static void rpctls_huphandler(int sig __unused); 119b9cbc85dSRick Macklem 120b9cbc85dSRick Macklem extern void rpctlssd_1(struct svc_req *rqstp, SVCXPRT *transp); 121b9cbc85dSRick Macklem 122b9cbc85dSRick Macklem static struct option longopts[] = { 1230637b12bSRick Macklem { "allowtls1_2", no_argument, NULL, '2' }, 124712aac13SRick Macklem { "ciphers", required_argument, NULL, 'C' }, 125b9cbc85dSRick Macklem { "certdir", required_argument, NULL, 'D' }, 126b9cbc85dSRick Macklem { "debuglevel", no_argument, NULL, 'd' }, 127b9cbc85dSRick Macklem { "checkhost", no_argument, NULL, 'h' }, 128b9cbc85dSRick Macklem { "verifylocs", required_argument, NULL, 'l' }, 129b9cbc85dSRick Macklem { "mutualverf", no_argument, NULL, 'm' }, 130b9cbc85dSRick Macklem { "domain", required_argument, NULL, 'n' }, 131b9cbc85dSRick Macklem { "verifydir", required_argument, NULL, 'p' }, 132b9cbc85dSRick Macklem { "crl", required_argument, NULL, 'r' }, 133b9cbc85dSRick Macklem { "certuser", no_argument, NULL, 'u' }, 134b9cbc85dSRick Macklem { "verbose", no_argument, NULL, 'v' }, 135b9cbc85dSRick Macklem { "multiwild", no_argument, NULL, 'W' }, 136b9cbc85dSRick Macklem { "singlewild", no_argument, NULL, 'w' }, 137b9cbc85dSRick Macklem { NULL, 0, NULL, 0 } 138b9cbc85dSRick Macklem }; 139b9cbc85dSRick Macklem 140b9cbc85dSRick Macklem int 141b9cbc85dSRick Macklem main(int argc, char **argv) 142b9cbc85dSRick Macklem { 143b9cbc85dSRick Macklem /* 144b9cbc85dSRick Macklem * We provide an RPC service on a local-domain socket. The 145b9cbc85dSRick Macklem * kernel rpctls code will upcall to this daemon to do the initial 146b9cbc85dSRick Macklem * TLS handshake. 147b9cbc85dSRick Macklem */ 148b9cbc85dSRick Macklem struct sockaddr_un sun; 149350668ebSRick Macklem int ch, fd, oldmask; 150b9cbc85dSRick Macklem SVCXPRT *xprt; 151b9cbc85dSRick Macklem struct timeval tm; 152b9cbc85dSRick Macklem struct timezone tz; 153b9cbc85dSRick Macklem char hostname[MAXHOSTNAMELEN + 2]; 154b9cbc85dSRick Macklem pid_t otherpid; 155b9cbc85dSRick Macklem bool tls_enable; 156b9cbc85dSRick Macklem size_t tls_enable_len; 157b9cbc85dSRick Macklem 158b9cbc85dSRick Macklem /* Check that another rpctlssd isn't already running. */ 159b9cbc85dSRick Macklem rpctls_pfh = pidfile_open(_PATH_RPCTLSSDPID, 0600, &otherpid); 160b9cbc85dSRick Macklem if (rpctls_pfh == NULL) { 161b9cbc85dSRick Macklem if (errno == EEXIST) 162b9cbc85dSRick Macklem errx(1, "rpctlssd already running, pid: %d.", otherpid); 163b9cbc85dSRick Macklem warn("cannot open or create pidfile"); 164b9cbc85dSRick Macklem } 165b9cbc85dSRick Macklem 166b9cbc85dSRick Macklem /* Check to see that the ktls is enabled. */ 167b9cbc85dSRick Macklem tls_enable_len = sizeof(tls_enable); 168b9cbc85dSRick Macklem if (sysctlbyname("kern.ipc.tls.enable", &tls_enable, &tls_enable_len, 169b9cbc85dSRick Macklem NULL, 0) != 0 || !tls_enable) 170b9cbc85dSRick Macklem errx(1, "Kernel TLS not enabled"); 171b9cbc85dSRick Macklem 172b9cbc85dSRick Macklem /* Get the time when this daemon is started. */ 173b9cbc85dSRick Macklem gettimeofday(&tm, &tz); 174b9cbc85dSRick Macklem rpctls_ssl_sec = tm.tv_sec; 175b9cbc85dSRick Macklem rpctls_ssl_usec = tm.tv_usec; 176b9cbc85dSRick Macklem 177b9cbc85dSRick Macklem /* Set the dns name for the server. */ 178b9cbc85dSRick Macklem rpctls_dnsname = rpctls_getdnsname(hostname); 179b9cbc85dSRick Macklem if (rpctls_dnsname == NULL) { 180b9cbc85dSRick Macklem strcpy(hostname, "@default.domain"); 181b9cbc85dSRick Macklem rpctls_dnsname = hostname; 182b9cbc85dSRick Macklem } 183b9cbc85dSRick Macklem 184b9cbc85dSRick Macklem rpctls_verbose = false; 1850637b12bSRick Macklem while ((ch = getopt_long(argc, argv, "2C:D:dhl:n:mp:r:uvWw", longopts, 186b9cbc85dSRick Macklem NULL)) != -1) { 187b9cbc85dSRick Macklem switch (ch) { 1880637b12bSRick Macklem case '2': 1890637b12bSRick Macklem rpctls_mintls = TLS1_2_VERSION; 1900637b12bSRick Macklem break; 191712aac13SRick Macklem case 'C': 192712aac13SRick Macklem rpctls_ciphers = optarg; 193712aac13SRick Macklem break; 194b9cbc85dSRick Macklem case 'D': 195b9cbc85dSRick Macklem rpctls_certdir = optarg; 196b9cbc85dSRick Macklem break; 197b9cbc85dSRick Macklem case 'd': 198b9cbc85dSRick Macklem rpctls_debug_level++; 199b9cbc85dSRick Macklem break; 200b9cbc85dSRick Macklem case 'h': 201b9cbc85dSRick Macklem rpctls_comparehost = true; 202b9cbc85dSRick Macklem break; 203b9cbc85dSRick Macklem case 'l': 204b9cbc85dSRick Macklem rpctls_verify_cafile = optarg; 205b9cbc85dSRick Macklem break; 206b9cbc85dSRick Macklem case 'm': 207b9cbc85dSRick Macklem rpctls_do_mutual = true; 208b9cbc85dSRick Macklem break; 209b9cbc85dSRick Macklem case 'n': 210b9cbc85dSRick Macklem hostname[0] = '@'; 211b9cbc85dSRick Macklem strlcpy(&hostname[1], optarg, MAXHOSTNAMELEN + 1); 212b9cbc85dSRick Macklem rpctls_dnsname = hostname; 213b9cbc85dSRick Macklem break; 214b9cbc85dSRick Macklem case 'p': 215b9cbc85dSRick Macklem rpctls_verify_capath = optarg; 216b9cbc85dSRick Macklem break; 217b9cbc85dSRick Macklem case 'r': 218b9cbc85dSRick Macklem rpctls_crlfile = optarg; 219b9cbc85dSRick Macklem break; 220b9cbc85dSRick Macklem case 'u': 221b9cbc85dSRick Macklem rpctls_cnuser = true; 222b9cbc85dSRick Macklem break; 223b9cbc85dSRick Macklem case 'v': 224b9cbc85dSRick Macklem rpctls_verbose = true; 225b9cbc85dSRick Macklem break; 226b9cbc85dSRick Macklem case 'W': 227b9cbc85dSRick Macklem if (rpctls_wildcard != X509_CHECK_FLAG_NO_WILDCARDS) 228b9cbc85dSRick Macklem errx(1, "options -w and -W are mutually " 229b9cbc85dSRick Macklem "exclusive"); 230b9cbc85dSRick Macklem rpctls_wildcard = X509_CHECK_FLAG_MULTI_LABEL_WILDCARDS; 231b9cbc85dSRick Macklem break; 232b9cbc85dSRick Macklem case 'w': 233b9cbc85dSRick Macklem if (rpctls_wildcard != X509_CHECK_FLAG_NO_WILDCARDS) 234b9cbc85dSRick Macklem errx(1, "options -w and -W are mutually " 235b9cbc85dSRick Macklem "exclusive"); 236b9cbc85dSRick Macklem rpctls_wildcard = 0; 237b9cbc85dSRick Macklem break; 238b9cbc85dSRick Macklem default: 239b9cbc85dSRick Macklem fprintf(stderr, "usage: %s " 240b9cbc85dSRick Macklem "[-D/--certdir certdir] [-d/--debuglevel] " 241b9cbc85dSRick Macklem "[-h/--checkhost] " 242b9cbc85dSRick Macklem "[-l/--verifylocs CAfile] [-m/--mutualverf] " 243b9cbc85dSRick Macklem "[-n/--domain domain_name] " 244b9cbc85dSRick Macklem "[-p/--verifydir CApath] [-r/--crl CRLfile] " 245b9cbc85dSRick Macklem "[-u/--certuser] [-v/--verbose] [-W/--multiwild] " 246b9cbc85dSRick Macklem "[-w/--singlewild]\n", argv[0]); 247b9cbc85dSRick Macklem exit(1); 248b9cbc85dSRick Macklem } 249b9cbc85dSRick Macklem } 250b9cbc85dSRick Macklem if (rpctls_do_mutual && rpctls_verify_cafile == NULL && 251b9cbc85dSRick Macklem rpctls_verify_capath == NULL) 252b9cbc85dSRick Macklem errx(1, "-m requires the -l <CAfile> and/or " 253b9cbc85dSRick Macklem "-p <CApath> options"); 254b9cbc85dSRick Macklem if (rpctls_comparehost && (!rpctls_do_mutual || 255b9cbc85dSRick Macklem (rpctls_verify_cafile == NULL && rpctls_verify_capath == NULL))) 256b9cbc85dSRick Macklem errx(1, "-h requires the -m plus the " 257b9cbc85dSRick Macklem "-l <CAfile> and/or -p <CApath> options"); 258b9cbc85dSRick Macklem if (!rpctls_comparehost && rpctls_wildcard != 259b9cbc85dSRick Macklem X509_CHECK_FLAG_NO_WILDCARDS) 260b9cbc85dSRick Macklem errx(1, "The -w or -W options require the -h option"); 261b9cbc85dSRick Macklem if (rpctls_cnuser && (!rpctls_do_mutual || 262b9cbc85dSRick Macklem (rpctls_verify_cafile == NULL && rpctls_verify_capath == NULL))) 263b9cbc85dSRick Macklem errx(1, "-u requires the -m plus the " 264b9cbc85dSRick Macklem "-l <CAfile> and/or -p <CApath> options"); 265b9cbc85dSRick Macklem 266b9cbc85dSRick Macklem if (modfind("krpc") < 0) { 267b9cbc85dSRick Macklem /* Not present in kernel, try loading it */ 268b9cbc85dSRick Macklem if (kldload("krpc") < 0 || modfind("krpc") < 0) 269b9cbc85dSRick Macklem errx(1, "Kernel RPC is not available"); 270b9cbc85dSRick Macklem } 271b9cbc85dSRick Macklem 272b9cbc85dSRick Macklem if (rpctls_debug_level == 0) { 273b9cbc85dSRick Macklem if (daemon(0, 0) != 0) 274b9cbc85dSRick Macklem err(1, "Can't daemonize"); 275b9cbc85dSRick Macklem signal(SIGINT, SIG_IGN); 276b9cbc85dSRick Macklem signal(SIGQUIT, SIG_IGN); 277b9cbc85dSRick Macklem signal(SIGHUP, SIG_IGN); 278b9cbc85dSRick Macklem } 279b9cbc85dSRick Macklem signal(SIGTERM, rpctlssd_terminate); 280b9cbc85dSRick Macklem signal(SIGPIPE, SIG_IGN); 281b9cbc85dSRick Macklem signal(SIGHUP, rpctls_huphandler); 282b9cbc85dSRick Macklem 283b9cbc85dSRick Macklem pidfile_write(rpctls_pfh); 284b9cbc85dSRick Macklem 285b9cbc85dSRick Macklem memset(&sun, 0, sizeof sun); 286b9cbc85dSRick Macklem sun.sun_family = AF_LOCAL; 287b9cbc85dSRick Macklem unlink(_PATH_RPCTLSSDSOCK); 288b9cbc85dSRick Macklem strcpy(sun.sun_path, _PATH_RPCTLSSDSOCK); 289b9cbc85dSRick Macklem sun.sun_len = SUN_LEN(&sun); 290b9cbc85dSRick Macklem fd = socket(AF_LOCAL, SOCK_STREAM, 0); 291b9cbc85dSRick Macklem if (fd < 0) { 292b9cbc85dSRick Macklem if (rpctls_debug_level == 0) { 293b9cbc85dSRick Macklem syslog(LOG_ERR, "Can't create local rpctlssd socket"); 294b9cbc85dSRick Macklem exit(1); 295b9cbc85dSRick Macklem } 296b9cbc85dSRick Macklem err(1, "Can't create local rpctlssd socket"); 297b9cbc85dSRick Macklem } 298b9cbc85dSRick Macklem oldmask = umask(S_IXUSR|S_IRWXG|S_IRWXO); 299b9cbc85dSRick Macklem if (bind(fd, (struct sockaddr *)&sun, sun.sun_len) < 0) { 300b9cbc85dSRick Macklem if (rpctls_debug_level == 0) { 301b9cbc85dSRick Macklem syslog(LOG_ERR, "Can't bind local rpctlssd socket"); 302b9cbc85dSRick Macklem exit(1); 303b9cbc85dSRick Macklem } 304b9cbc85dSRick Macklem err(1, "Can't bind local rpctlssd socket"); 305b9cbc85dSRick Macklem } 306b9cbc85dSRick Macklem umask(oldmask); 307b9cbc85dSRick Macklem if (listen(fd, SOMAXCONN) < 0) { 308b9cbc85dSRick Macklem if (rpctls_debug_level == 0) { 309b9cbc85dSRick Macklem syslog(LOG_ERR, 310b9cbc85dSRick Macklem "Can't listen on local rpctlssd socket"); 311b9cbc85dSRick Macklem exit(1); 312b9cbc85dSRick Macklem } 313b9cbc85dSRick Macklem err(1, "Can't listen on local rpctlssd socket"); 314b9cbc85dSRick Macklem } 315b9cbc85dSRick Macklem xprt = svc_vc_create(fd, RPC_MAXDATASIZE, RPC_MAXDATASIZE); 316b9cbc85dSRick Macklem if (!xprt) { 317b9cbc85dSRick Macklem if (rpctls_debug_level == 0) { 318b9cbc85dSRick Macklem syslog(LOG_ERR, 319b9cbc85dSRick Macklem "Can't create transport for local rpctlssd socket"); 320b9cbc85dSRick Macklem exit(1); 321b9cbc85dSRick Macklem } 322b9cbc85dSRick Macklem err(1, "Can't create transport for local rpctlssd socket"); 323b9cbc85dSRick Macklem } 324b9cbc85dSRick Macklem if (!svc_reg(xprt, RPCTLSSD, RPCTLSSDVERS, rpctlssd_1, NULL)) { 325b9cbc85dSRick Macklem if (rpctls_debug_level == 0) { 326b9cbc85dSRick Macklem syslog(LOG_ERR, 327b9cbc85dSRick Macklem "Can't register service for local rpctlssd socket"); 328b9cbc85dSRick Macklem exit(1); 329b9cbc85dSRick Macklem } 330b9cbc85dSRick Macklem err(1, "Can't register service for local rpctlssd socket"); 331b9cbc85dSRick Macklem } 332b9cbc85dSRick Macklem 333b9cbc85dSRick Macklem rpctls_ctx = rpctls_setup_ssl(rpctls_certdir); 334b9cbc85dSRick Macklem if (rpctls_ctx == NULL) { 335b9cbc85dSRick Macklem if (rpctls_debug_level == 0) { 336b9cbc85dSRick Macklem syslog(LOG_ERR, "Can't create SSL context"); 337b9cbc85dSRick Macklem exit(1); 338b9cbc85dSRick Macklem } 339b9cbc85dSRick Macklem err(1, "Can't create SSL context"); 340b9cbc85dSRick Macklem } 341b9cbc85dSRick Macklem rpctls_gothup = false; 342b9cbc85dSRick Macklem LIST_INIT(&rpctls_ssllist); 343b9cbc85dSRick Macklem 344b9cbc85dSRick Macklem rpctls_syscall(RPCTLS_SYSC_SRVSETPATH, _PATH_RPCTLSSDSOCK); 345b9cbc85dSRick Macklem 346b9cbc85dSRick Macklem rpctls_svc_run(); 347b9cbc85dSRick Macklem 348b9cbc85dSRick Macklem rpctls_syscall(RPCTLS_SYSC_SRVSHUTDOWN, ""); 349b9cbc85dSRick Macklem 350b9cbc85dSRick Macklem SSL_CTX_free(rpctls_ctx); 351b9cbc85dSRick Macklem EVP_cleanup(); 352b9cbc85dSRick Macklem return (0); 353b9cbc85dSRick Macklem } 354b9cbc85dSRick Macklem 355b9cbc85dSRick Macklem bool_t 356b9cbc85dSRick Macklem rpctlssd_null_1_svc(__unused void *argp, __unused void *result, 357b9cbc85dSRick Macklem __unused struct svc_req *rqstp) 358b9cbc85dSRick Macklem { 359b9cbc85dSRick Macklem 360b9cbc85dSRick Macklem rpctls_verbose_out("rpctlssd_null_svc: done\n"); 361b9cbc85dSRick Macklem return (TRUE); 362b9cbc85dSRick Macklem } 363b9cbc85dSRick Macklem 364b9cbc85dSRick Macklem bool_t 365b9cbc85dSRick Macklem rpctlssd_connect_1_svc(__unused void *argp, 366b9cbc85dSRick Macklem struct rpctlssd_connect_res *result, __unused struct svc_req *rqstp) 367b9cbc85dSRick Macklem { 368b9cbc85dSRick Macklem int ngrps, s; 369b9cbc85dSRick Macklem SSL *ssl; 370b9cbc85dSRick Macklem uint32_t flags; 371b9cbc85dSRick Macklem struct ssl_entry *newslp; 372b9cbc85dSRick Macklem uint32_t uid; 373b9cbc85dSRick Macklem uint32_t *gidp; 374b9cbc85dSRick Macklem X509 *cert; 375b9cbc85dSRick Macklem 376b9cbc85dSRick Macklem rpctls_verbose_out("rpctlsd_connect_svc: started\n"); 377b9cbc85dSRick Macklem memset(result, 0, sizeof(*result)); 378b9cbc85dSRick Macklem /* Get the socket fd from the kernel. */ 379b9cbc85dSRick Macklem s = rpctls_syscall(RPCTLS_SYSC_SRVSOCKET, ""); 380b9cbc85dSRick Macklem if (s < 0) 381b9cbc85dSRick Macklem return (FALSE); 382b9cbc85dSRick Macklem 383b9cbc85dSRick Macklem /* Do the server side of a TLS handshake. */ 384b9cbc85dSRick Macklem gidp = calloc(NGROUPS, sizeof(*gidp)); 385b9cbc85dSRick Macklem ssl = rpctls_server(rpctls_ctx, s, &flags, &uid, &ngrps, gidp, &cert); 386b9cbc85dSRick Macklem if (ssl == NULL) { 387b9cbc85dSRick Macklem free(gidp); 388b9cbc85dSRick Macklem rpctls_verbose_out("rpctlssd_connect_svc: ssl " 389b9cbc85dSRick Macklem "accept failed\n"); 390b9cbc85dSRick Macklem /* 391b9cbc85dSRick Macklem * For RPC-over-TLS, this upcall is expected 392b9cbc85dSRick Macklem * to close off the socket upon handshake failure. 393b9cbc85dSRick Macklem */ 394b9cbc85dSRick Macklem close(s); 395b9cbc85dSRick Macklem return (FALSE); 396b9cbc85dSRick Macklem } else { 397b9cbc85dSRick Macklem rpctls_verbose_out("rpctlssd_connect_svc: " 398b9cbc85dSRick Macklem "succeeded flags=0x%x\n", flags); 399b9cbc85dSRick Macklem result->flags = flags; 400b9cbc85dSRick Macklem result->sec = rpctls_ssl_sec; 401b9cbc85dSRick Macklem result->usec = rpctls_ssl_usec; 402b9cbc85dSRick Macklem result->ssl = ++rpctls_ssl_refno; 403b9cbc85dSRick Macklem /* Hard to believe this could ever wrap around.. */ 404b9cbc85dSRick Macklem if (rpctls_ssl_refno == 0) 405b9cbc85dSRick Macklem result->ssl = ++rpctls_ssl_refno; 406b9cbc85dSRick Macklem if ((flags & RPCTLS_FLAGS_CERTUSER) != 0) { 407b9cbc85dSRick Macklem result->uid = uid; 408b9cbc85dSRick Macklem result->gid.gid_len = ngrps; 409b9cbc85dSRick Macklem result->gid.gid_val = gidp; 410b9cbc85dSRick Macklem } else { 411b9cbc85dSRick Macklem result->uid = 0; 412b9cbc85dSRick Macklem result->gid.gid_len = 0; 413b9cbc85dSRick Macklem result->gid.gid_val = gidp; 414b9cbc85dSRick Macklem } 415b9cbc85dSRick Macklem } 416b9cbc85dSRick Macklem 417b9cbc85dSRick Macklem /* Maintain list of all current SSL *'s */ 418b9cbc85dSRick Macklem newslp = malloc(sizeof(*newslp)); 419b9cbc85dSRick Macklem newslp->ssl = ssl; 420b9cbc85dSRick Macklem newslp->s = s; 421b9cbc85dSRick Macklem newslp->shutoff = false; 422b9cbc85dSRick Macklem newslp->refno = rpctls_ssl_refno; 423b9cbc85dSRick Macklem newslp->cert = cert; 424b9cbc85dSRick Macklem LIST_INSERT_HEAD(&rpctls_ssllist, newslp, next); 425b9cbc85dSRick Macklem return (TRUE); 426b9cbc85dSRick Macklem } 427b9cbc85dSRick Macklem 428b9cbc85dSRick Macklem bool_t 429b9cbc85dSRick Macklem rpctlssd_handlerecord_1_svc(struct rpctlssd_handlerecord_arg *argp, 430b9cbc85dSRick Macklem struct rpctlssd_handlerecord_res *result, __unused struct svc_req *rqstp) 431b9cbc85dSRick Macklem { 432b9cbc85dSRick Macklem struct ssl_entry *slp; 433b9cbc85dSRick Macklem int ret; 434b9cbc85dSRick Macklem char junk; 435b9cbc85dSRick Macklem 436b9cbc85dSRick Macklem slp = NULL; 437b9cbc85dSRick Macklem if (argp->sec == rpctls_ssl_sec && argp->usec == 438b9cbc85dSRick Macklem rpctls_ssl_usec) { 439b9cbc85dSRick Macklem LIST_FOREACH(slp, &rpctls_ssllist, next) { 440b9cbc85dSRick Macklem if (slp->refno == argp->ssl) 441b9cbc85dSRick Macklem break; 442b9cbc85dSRick Macklem } 443b9cbc85dSRick Macklem } 444b9cbc85dSRick Macklem 445b9cbc85dSRick Macklem if (slp != NULL) { 446b9cbc85dSRick Macklem rpctls_verbose_out("rpctlssd_handlerecord fd=%d\n", 447b9cbc85dSRick Macklem slp->s); 448b9cbc85dSRick Macklem /* 449b9cbc85dSRick Macklem * An SSL_read() of 0 bytes should fail, but it should 450b9cbc85dSRick Macklem * handle the non-application data record before doing so. 451b9cbc85dSRick Macklem */ 452b9cbc85dSRick Macklem ret = SSL_read(slp->ssl, &junk, 0); 453b9cbc85dSRick Macklem if (ret <= 0) { 454b9cbc85dSRick Macklem /* Check to see if this was a close alert. */ 455b9cbc85dSRick Macklem ret = SSL_get_shutdown(slp->ssl); 456b9cbc85dSRick Macklem if ((ret & (SSL_SENT_SHUTDOWN | 457b9cbc85dSRick Macklem SSL_RECEIVED_SHUTDOWN)) == SSL_RECEIVED_SHUTDOWN) 458b9cbc85dSRick Macklem SSL_shutdown(slp->ssl); 459b9cbc85dSRick Macklem } else { 460b9cbc85dSRick Macklem if (rpctls_debug_level == 0) 461b9cbc85dSRick Macklem syslog(LOG_ERR, "SSL_read returned %d", ret); 462b9cbc85dSRick Macklem else 463b9cbc85dSRick Macklem fprintf(stderr, "SSL_read returned %d\n", ret); 464b9cbc85dSRick Macklem } 465b9cbc85dSRick Macklem result->reterr = RPCTLSERR_OK; 466b9cbc85dSRick Macklem } else 467b9cbc85dSRick Macklem result->reterr = RPCTLSERR_NOSSL; 468b9cbc85dSRick Macklem return (TRUE); 469b9cbc85dSRick Macklem } 470b9cbc85dSRick Macklem 471b9cbc85dSRick Macklem bool_t 472b9cbc85dSRick Macklem rpctlssd_disconnect_1_svc(struct rpctlssd_disconnect_arg *argp, 473b9cbc85dSRick Macklem struct rpctlssd_disconnect_res *result, __unused struct svc_req *rqstp) 474b9cbc85dSRick Macklem { 475b9cbc85dSRick Macklem struct ssl_entry *slp; 476b9cbc85dSRick Macklem int ret; 477b9cbc85dSRick Macklem 478b9cbc85dSRick Macklem slp = NULL; 479b9cbc85dSRick Macklem if (argp->sec == rpctls_ssl_sec && argp->usec == 480b9cbc85dSRick Macklem rpctls_ssl_usec) { 481b9cbc85dSRick Macklem LIST_FOREACH(slp, &rpctls_ssllist, next) { 482b9cbc85dSRick Macklem if (slp->refno == argp->ssl) 483b9cbc85dSRick Macklem break; 484b9cbc85dSRick Macklem } 485b9cbc85dSRick Macklem } 486b9cbc85dSRick Macklem 487b9cbc85dSRick Macklem if (slp != NULL) { 488b9cbc85dSRick Macklem rpctls_verbose_out("rpctlssd_disconnect fd=%d closed\n", 489b9cbc85dSRick Macklem slp->s); 490b9cbc85dSRick Macklem LIST_REMOVE(slp, next); 491b9cbc85dSRick Macklem if (!slp->shutoff) { 492b9cbc85dSRick Macklem ret = SSL_get_shutdown(slp->ssl); 493b9cbc85dSRick Macklem /* 494b9cbc85dSRick Macklem * Do an SSL_shutdown() unless a close alert has 495b9cbc85dSRick Macklem * already been sent. 496b9cbc85dSRick Macklem */ 497b9cbc85dSRick Macklem if ((ret & SSL_SENT_SHUTDOWN) == 0) 498b9cbc85dSRick Macklem SSL_shutdown(slp->ssl); 499b9cbc85dSRick Macklem } 500b9cbc85dSRick Macklem SSL_free(slp->ssl); 501b9cbc85dSRick Macklem if (slp->cert != NULL) 502b9cbc85dSRick Macklem X509_free(slp->cert); 503b9cbc85dSRick Macklem /* 504b9cbc85dSRick Macklem * For RPC-over-TLS, this upcall is expected 505b9cbc85dSRick Macklem * to close off the socket. 506b9cbc85dSRick Macklem */ 507b9cbc85dSRick Macklem if (!slp->shutoff) 508b9cbc85dSRick Macklem shutdown(slp->s, SHUT_WR); 509b9cbc85dSRick Macklem close(slp->s); 510b9cbc85dSRick Macklem free(slp); 511b9cbc85dSRick Macklem result->reterr = RPCTLSERR_OK; 512b9cbc85dSRick Macklem } else 513b9cbc85dSRick Macklem result->reterr = RPCTLSERR_NOCLOSE; 514b9cbc85dSRick Macklem return (TRUE); 515b9cbc85dSRick Macklem } 516b9cbc85dSRick Macklem 517b9cbc85dSRick Macklem int 518b9cbc85dSRick Macklem rpctlssd_1_freeresult(__unused SVCXPRT *transp, xdrproc_t xdr_result, 519b9cbc85dSRick Macklem caddr_t result) 520b9cbc85dSRick Macklem { 521b9cbc85dSRick Macklem rpctlssd_connect_res *res; 522b9cbc85dSRick Macklem 523b9cbc85dSRick Macklem if (xdr_result == (xdrproc_t)xdr_rpctlssd_connect_res) { 524b9cbc85dSRick Macklem res = (rpctlssd_connect_res *)(void *)result; 525b9cbc85dSRick Macklem free(res->gid.gid_val); 526b9cbc85dSRick Macklem } 527b9cbc85dSRick Macklem return (TRUE); 528b9cbc85dSRick Macklem } 529b9cbc85dSRick Macklem 530b9cbc85dSRick Macklem static void 531b9cbc85dSRick Macklem rpctlssd_terminate(int sig __unused) 532b9cbc85dSRick Macklem { 533b9cbc85dSRick Macklem struct ssl_entry *slp; 534b9cbc85dSRick Macklem 535b9cbc85dSRick Macklem rpctls_syscall(RPCTLS_SYSC_SRVSHUTDOWN, ""); 536b9cbc85dSRick Macklem pidfile_remove(rpctls_pfh); 537b9cbc85dSRick Macklem 538b9cbc85dSRick Macklem LIST_FOREACH(slp, &rpctls_ssllist, next) 539b9cbc85dSRick Macklem shutdown(slp->s, SHUT_RD); 540b9cbc85dSRick Macklem exit(0); 541b9cbc85dSRick Macklem } 542b9cbc85dSRick Macklem 543b9cbc85dSRick Macklem /* Allow the handshake to proceed. */ 544b9cbc85dSRick Macklem static int 545b9cbc85dSRick Macklem rpctls_verify_callback(__unused int preverify_ok, 546b9cbc85dSRick Macklem __unused X509_STORE_CTX *x509_ctx) 547b9cbc85dSRick Macklem { 548b9cbc85dSRick Macklem 549b9cbc85dSRick Macklem return (1); 550b9cbc85dSRick Macklem } 551b9cbc85dSRick Macklem 552b9cbc85dSRick Macklem static SSL_CTX * 553b9cbc85dSRick Macklem rpctls_setup_ssl(const char *certdir) 554b9cbc85dSRick Macklem { 555b9cbc85dSRick Macklem SSL_CTX *ctx; 556b9cbc85dSRick Macklem char path[PATH_MAX]; 557b9cbc85dSRick Macklem size_t len, rlen; 558b9cbc85dSRick Macklem int ret; 559b9cbc85dSRick Macklem 560b9cbc85dSRick Macklem SSL_library_init(); 561b9cbc85dSRick Macklem SSL_load_error_strings(); 562b9cbc85dSRick Macklem OpenSSL_add_all_algorithms(); 563b9cbc85dSRick Macklem 564b9cbc85dSRick Macklem ctx = SSL_CTX_new(TLS_server_method()); 565b9cbc85dSRick Macklem if (ctx == NULL) { 566b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_setup_ssl: SSL_CTX_new failed\n"); 567b9cbc85dSRick Macklem return (NULL); 568b9cbc85dSRick Macklem } 569b9cbc85dSRick Macklem SSL_CTX_set_ecdh_auto(ctx, 1); 570b9cbc85dSRick Macklem 571712aac13SRick Macklem if (rpctls_ciphers != NULL) { 572b9cbc85dSRick Macklem /* 573b9cbc85dSRick Macklem * Set preferred ciphers, since KERN_TLS only supports a 574712aac13SRick Macklem * few of them. Normally, not doing this should be ok, 575712aac13SRick Macklem * since the library defaults will work. 576b9cbc85dSRick Macklem */ 577712aac13SRick Macklem ret = SSL_CTX_set_cipher_list(ctx, rpctls_ciphers); 578b9cbc85dSRick Macklem if (ret == 0) { 579b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_setup_ssl: " 580712aac13SRick Macklem "SSL_CTX_set_cipher_list failed: %s\n", 581712aac13SRick Macklem rpctls_ciphers); 582b9cbc85dSRick Macklem SSL_CTX_free(ctx); 583b9cbc85dSRick Macklem return (NULL); 584b9cbc85dSRick Macklem } 585712aac13SRick Macklem } 586b9cbc85dSRick Macklem 5870637b12bSRick Macklem ret = SSL_CTX_set_min_proto_version(ctx, rpctls_mintls); 5880637b12bSRick Macklem if (ret == 0) { 5890637b12bSRick Macklem rpctls_verbose_out("rpctls_setup_ssl: " 5900637b12bSRick Macklem "SSL_CTX_set_min_proto_version failed\n"); 5910637b12bSRick Macklem SSL_CTX_free(ctx); 5920637b12bSRick Macklem return (NULL); 5930637b12bSRick Macklem } 5940637b12bSRick Macklem ret = SSL_CTX_set_max_proto_version(ctx, TLS1_3_VERSION); 5950637b12bSRick Macklem if (ret == 0) { 5960637b12bSRick Macklem rpctls_verbose_out("rpctls_setup_ssl: " 5970637b12bSRick Macklem "SSL_CTX_set_max_proto_version failed\n"); 5980637b12bSRick Macklem SSL_CTX_free(ctx); 5990637b12bSRick Macklem return (NULL); 6000637b12bSRick Macklem } 6010637b12bSRick Macklem 602b9cbc85dSRick Macklem /* Get the cert.pem and certkey.pem files from the directory certdir. */ 603b9cbc85dSRick Macklem len = strlcpy(path, certdir, sizeof(path)); 604b9cbc85dSRick Macklem rlen = sizeof(path) - len; 605b9cbc85dSRick Macklem if (strlcpy(&path[len], "cert.pem", rlen) != 8) { 606b9cbc85dSRick Macklem SSL_CTX_free(ctx); 607b9cbc85dSRick Macklem return (NULL); 608b9cbc85dSRick Macklem } 609b9cbc85dSRick Macklem ret = SSL_CTX_use_certificate_file(ctx, path, SSL_FILETYPE_PEM); 610b9cbc85dSRick Macklem if (ret != 1) { 611b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_setup_ssl: can't use certificate " 612b9cbc85dSRick Macklem "file path=%s ret=%d\n", path, ret); 613b9cbc85dSRick Macklem SSL_CTX_free(ctx); 614b9cbc85dSRick Macklem return (NULL); 615b9cbc85dSRick Macklem } 616b9cbc85dSRick Macklem if (strlcpy(&path[len], "certkey.pem", rlen) != 11) { 617b9cbc85dSRick Macklem SSL_CTX_free(ctx); 618b9cbc85dSRick Macklem return (NULL); 619b9cbc85dSRick Macklem } 620b9cbc85dSRick Macklem ret = SSL_CTX_use_PrivateKey_file(ctx, path, SSL_FILETYPE_PEM); 621b9cbc85dSRick Macklem if (ret != 1) { 622b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_setup_ssl: Can't use private " 623b9cbc85dSRick Macklem "key path=%s ret=%d\n", path, ret); 624b9cbc85dSRick Macklem SSL_CTX_free(ctx); 625b9cbc85dSRick Macklem return (NULL); 626b9cbc85dSRick Macklem } 627b9cbc85dSRick Macklem 628b9cbc85dSRick Macklem /* Set Mutual authentication, as required. */ 629b9cbc85dSRick Macklem if (rpctls_do_mutual) { 630b9cbc85dSRick Macklem if (rpctls_verify_cafile != NULL || 631b9cbc85dSRick Macklem rpctls_verify_capath != NULL) { 632b9cbc85dSRick Macklem if (rpctls_crlfile != NULL) { 633b9cbc85dSRick Macklem ret = rpctls_loadcrlfile(ctx); 634b9cbc85dSRick Macklem if (ret == 0) { 635b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_setup_ssl:" 636b9cbc85dSRick Macklem " Load CRLfile failed\n"); 637b9cbc85dSRick Macklem SSL_CTX_free(ctx); 638b9cbc85dSRick Macklem return (NULL); 639b9cbc85dSRick Macklem } 640b9cbc85dSRick Macklem } 641b9cbc85dSRick Macklem #if OPENSSL_VERSION_NUMBER >= 0x30000000 642b9cbc85dSRick Macklem ret = 1; 643b9cbc85dSRick Macklem if (rpctls_verify_cafile != NULL) 644b9cbc85dSRick Macklem ret = SSL_CTX_load_verify_file(ctx, 645b9cbc85dSRick Macklem rpctls_verify_cafile); 646b9cbc85dSRick Macklem if (ret != 0 && rpctls_verify_capath != NULL) 647b9cbc85dSRick Macklem ret = SSL_CTX_load_verify_dir(ctx, 648b9cbc85dSRick Macklem rpctls_verify_capath); 649b9cbc85dSRick Macklem #else 650b9cbc85dSRick Macklem ret = SSL_CTX_load_verify_locations(ctx, 651b9cbc85dSRick Macklem rpctls_verify_cafile, rpctls_verify_capath); 652b9cbc85dSRick Macklem #endif 653b9cbc85dSRick Macklem if (ret == 0) { 654b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_setup_ssl: " 655b9cbc85dSRick Macklem "Can't load verify locations\n"); 656b9cbc85dSRick Macklem SSL_CTX_free(ctx); 657b9cbc85dSRick Macklem return (NULL); 658b9cbc85dSRick Macklem } 659b9cbc85dSRick Macklem if (rpctls_verify_cafile != NULL) 660b9cbc85dSRick Macklem SSL_CTX_set_client_CA_list(ctx, 661b9cbc85dSRick Macklem SSL_load_client_CA_file( 662b9cbc85dSRick Macklem rpctls_verify_cafile)); 663b9cbc85dSRick Macklem } 664b9cbc85dSRick Macklem SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, 665b9cbc85dSRick Macklem rpctls_verify_callback); 666b9cbc85dSRick Macklem } 667c7bb0f47SJohn Baldwin #ifdef SSL_OP_ENABLE_KTLS 668c7bb0f47SJohn Baldwin SSL_CTX_set_options(ctx, SSL_OP_ENABLE_KTLS); 669c7bb0f47SJohn Baldwin #endif 670c7bb0f47SJohn Baldwin #ifdef SSL_MODE_NO_KTLS_TX 671b9cbc85dSRick Macklem SSL_CTX_clear_mode(ctx, SSL_MODE_NO_KTLS_TX | SSL_MODE_NO_KTLS_RX); 672c7bb0f47SJohn Baldwin #endif 673b9cbc85dSRick Macklem return (ctx); 674b9cbc85dSRick Macklem } 675b9cbc85dSRick Macklem 676b9cbc85dSRick Macklem static SSL * 677b9cbc85dSRick Macklem rpctls_server(SSL_CTX *ctx, int s, uint32_t *flags, uint32_t *uidp, 678b9cbc85dSRick Macklem int *ngrps, uint32_t *gidp, X509 **certp) 679b9cbc85dSRick Macklem { 680b9cbc85dSRick Macklem SSL *ssl; 681b9cbc85dSRick Macklem X509 *cert; 682b9cbc85dSRick Macklem struct sockaddr *sad; 683b9cbc85dSRick Macklem struct sockaddr_storage ad; 684b9cbc85dSRick Macklem char hostnam[NI_MAXHOST]; 685b9cbc85dSRick Macklem int gethostret, ret; 686b9cbc85dSRick Macklem char *cp, *cp2; 687b9cbc85dSRick Macklem long verfret; 688b9cbc85dSRick Macklem 689b9cbc85dSRick Macklem *flags = 0; 690b9cbc85dSRick Macklem *certp = NULL; 691b9cbc85dSRick Macklem sad = (struct sockaddr *)&ad; 692b9cbc85dSRick Macklem ssl = SSL_new(ctx); 693b9cbc85dSRick Macklem if (ssl == NULL) { 694b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_server: SSL_new failed\n"); 695b9cbc85dSRick Macklem return (NULL); 696b9cbc85dSRick Macklem } 697b9cbc85dSRick Macklem if (SSL_set_fd(ssl, s) != 1) { 698b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_server: SSL_set_fd failed\n"); 699b9cbc85dSRick Macklem SSL_free(ssl); 700b9cbc85dSRick Macklem return (NULL); 701b9cbc85dSRick Macklem } 702b9cbc85dSRick Macklem ret = SSL_accept(ssl); 703b9cbc85dSRick Macklem if (ret != 1) { 704b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_server: SSL_accept " 705b9cbc85dSRick Macklem "failed ret=%d\n", ret); 706b9cbc85dSRick Macklem SSL_free(ssl); 707b9cbc85dSRick Macklem return (NULL); 708b9cbc85dSRick Macklem } 709b9cbc85dSRick Macklem *flags |= RPCTLS_FLAGS_HANDSHAKE; 710d71c9f14SRick Macklem if (rpctls_verbose) { 711d71c9f14SRick Macklem gethostret = rpctls_gethost(s, sad, hostnam, sizeof(hostnam)); 712d71c9f14SRick Macklem if (gethostret == 0) 713d71c9f14SRick Macklem hostnam[0] = '\0'; 714d71c9f14SRick Macklem rpctls_verbose_out("rpctls_server: SSL handshake ok for host %s" 715d71c9f14SRick Macklem " <%s %s>\n", hostnam, SSL_get_version(ssl), 716d71c9f14SRick Macklem SSL_get_cipher(ssl)); 717d71c9f14SRick Macklem } 718b9cbc85dSRick Macklem if (rpctls_do_mutual) { 719b9cbc85dSRick Macklem cert = SSL_get_peer_certificate(ssl); 720b9cbc85dSRick Macklem if (cert != NULL) { 721d71c9f14SRick Macklem if (!rpctls_verbose) { 722b9cbc85dSRick Macklem gethostret = rpctls_gethost(s, sad, hostnam, 723b9cbc85dSRick Macklem sizeof(hostnam)); 724b9cbc85dSRick Macklem if (gethostret == 0) 725b9cbc85dSRick Macklem hostnam[0] = '\0'; 726d71c9f14SRick Macklem } 727b9cbc85dSRick Macklem cp2 = X509_NAME_oneline( 728b9cbc85dSRick Macklem X509_get_subject_name(cert), NULL, 0); 729b9cbc85dSRick Macklem *flags |= RPCTLS_FLAGS_GOTCERT; 730b9cbc85dSRick Macklem verfret = SSL_get_verify_result(ssl); 731b9cbc85dSRick Macklem if (verfret != X509_V_OK) { 732b9cbc85dSRick Macklem cp = X509_NAME_oneline( 733b9cbc85dSRick Macklem X509_get_issuer_name(cert), NULL, 0); 734b9cbc85dSRick Macklem if (rpctls_debug_level == 0) 735b9cbc85dSRick Macklem syslog(LOG_INFO | LOG_DAEMON, 736b9cbc85dSRick Macklem "rpctls_server: client IP %s " 737b9cbc85dSRick Macklem "issuerName=%s subjectName=%s" 738b9cbc85dSRick Macklem " verify failed %s\n", hostnam, 739b9cbc85dSRick Macklem cp, cp2, 740b9cbc85dSRick Macklem X509_verify_cert_error_string( 741b9cbc85dSRick Macklem verfret)); 742b9cbc85dSRick Macklem else 743b9cbc85dSRick Macklem fprintf(stderr, 744b9cbc85dSRick Macklem "rpctls_server: client IP %s " 745b9cbc85dSRick Macklem "issuerName=%s subjectName=%s" 746b9cbc85dSRick Macklem " verify failed %s\n", hostnam, 747b9cbc85dSRick Macklem cp, cp2, 748b9cbc85dSRick Macklem X509_verify_cert_error_string( 749b9cbc85dSRick Macklem verfret)); 750b9cbc85dSRick Macklem } 751b9cbc85dSRick Macklem if (verfret == 752b9cbc85dSRick Macklem X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT || 753b9cbc85dSRick Macklem verfret == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN) 754b9cbc85dSRick Macklem *flags |= RPCTLS_FLAGS_SELFSIGNED; 755b9cbc85dSRick Macklem else if (verfret == X509_V_OK) { 756b9cbc85dSRick Macklem if (rpctls_comparehost) { 757b9cbc85dSRick Macklem ret = 0; 758b9cbc85dSRick Macklem if (gethostret != 0) 759b9cbc85dSRick Macklem ret = rpctls_checkhost(sad, 760b9cbc85dSRick Macklem cert, rpctls_wildcard); 761b9cbc85dSRick Macklem if (ret != 1) { 762b9cbc85dSRick Macklem *flags |= 763b9cbc85dSRick Macklem RPCTLS_FLAGS_DISABLED; 764b9cbc85dSRick Macklem rpctls_verbose_out( 765b9cbc85dSRick Macklem "rpctls_server: " 766b9cbc85dSRick Macklem "checkhost " 767b9cbc85dSRick Macklem "failed\n"); 768b9cbc85dSRick Macklem } 769b9cbc85dSRick Macklem } 770b9cbc85dSRick Macklem if (rpctls_cnuser) { 771b9cbc85dSRick Macklem ret = rpctls_cnname(cert, uidp, 772b9cbc85dSRick Macklem ngrps, gidp); 773b9cbc85dSRick Macklem if (ret != 0) 774b9cbc85dSRick Macklem *flags |= RPCTLS_FLAGS_CERTUSER; 775b9cbc85dSRick Macklem } 776b9cbc85dSRick Macklem *flags |= RPCTLS_FLAGS_VERIFIED; 777b9cbc85dSRick Macklem *certp = cert; 778b9cbc85dSRick Macklem cert = NULL; 779b9cbc85dSRick Macklem } 780b9cbc85dSRick Macklem if (cert != NULL) 781b9cbc85dSRick Macklem X509_free(cert); 782b9cbc85dSRick Macklem } else 783b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_server: " 784b9cbc85dSRick Macklem "No peer certificate\n"); 785b9cbc85dSRick Macklem } 786b9cbc85dSRick Macklem 787b9cbc85dSRick Macklem /* Check to see that ktls is working for the connection. */ 788b9cbc85dSRick Macklem ret = BIO_get_ktls_send(SSL_get_wbio(ssl)); 789b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_server: BIO_get_ktls_send=%d\n", ret); 790b9cbc85dSRick Macklem if (ret != 0) { 791b9cbc85dSRick Macklem ret = BIO_get_ktls_recv(SSL_get_rbio(ssl)); 792b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_server: BIO_get_ktls_recv=%d\n", 793b9cbc85dSRick Macklem ret); 794b9cbc85dSRick Macklem } 795b9cbc85dSRick Macklem if (ret == 0) { 796b9cbc85dSRick Macklem if (rpctls_debug_level == 0) 797b9cbc85dSRick Macklem syslog(LOG_ERR, "ktls not working"); 798b9cbc85dSRick Macklem else 799b9cbc85dSRick Macklem fprintf(stderr, "ktls not working\n"); 800b9cbc85dSRick Macklem /* 801b9cbc85dSRick Macklem * The handshake has completed, so all that can be 802b9cbc85dSRick Macklem * done is disable the connection. 803b9cbc85dSRick Macklem */ 804b9cbc85dSRick Macklem *flags |= RPCTLS_FLAGS_DISABLED; 805b9cbc85dSRick Macklem } 806b9cbc85dSRick Macklem 807b9cbc85dSRick Macklem return (ssl); 808b9cbc85dSRick Macklem } 809b9cbc85dSRick Macklem 810b9cbc85dSRick Macklem /* 811b9cbc85dSRick Macklem * Acquire the dnsname for this server. 812b9cbc85dSRick Macklem */ 813b9cbc85dSRick Macklem static char * 814b9cbc85dSRick Macklem rpctls_getdnsname(char *hostname) 815b9cbc85dSRick Macklem { 816b9cbc85dSRick Macklem char *cp, *dnsname; 817b9cbc85dSRick Macklem struct addrinfo *aip, hints; 818b9cbc85dSRick Macklem int error; 819b9cbc85dSRick Macklem 820b9cbc85dSRick Macklem dnsname = NULL; 821b9cbc85dSRick Macklem if (gethostname(hostname, MAXHOSTNAMELEN) == 0) { 822b9cbc85dSRick Macklem if ((cp = strchr(hostname, '.')) != NULL && 823b9cbc85dSRick Macklem *(cp + 1) != '\0') { 824b9cbc85dSRick Macklem *cp = '@'; 825b9cbc85dSRick Macklem dnsname = cp; 826b9cbc85dSRick Macklem } else { 827b9cbc85dSRick Macklem memset((void *)&hints, 0, sizeof (hints)); 828b9cbc85dSRick Macklem hints.ai_flags = AI_CANONNAME; 829b9cbc85dSRick Macklem error = getaddrinfo(hostname, NULL, &hints, &aip); 830b9cbc85dSRick Macklem if (error == 0) { 831b9cbc85dSRick Macklem if (aip->ai_canonname != NULL && 832b9cbc85dSRick Macklem (cp = strchr(aip->ai_canonname, '.')) != 833b9cbc85dSRick Macklem NULL && *(cp + 1) != '\0') { 834b9cbc85dSRick Macklem hostname[0] = '@'; 835b9cbc85dSRick Macklem strlcpy(&hostname[1], cp + 1, 836b9cbc85dSRick Macklem MAXHOSTNAMELEN + 1); 837b9cbc85dSRick Macklem dnsname = hostname; 838b9cbc85dSRick Macklem } 839b9cbc85dSRick Macklem freeaddrinfo(aip); 840b9cbc85dSRick Macklem } 841b9cbc85dSRick Macklem } 842b9cbc85dSRick Macklem } 843b9cbc85dSRick Macklem return (dnsname); 844b9cbc85dSRick Macklem } 845b9cbc85dSRick Macklem 846b9cbc85dSRick Macklem /* 847b9cbc85dSRick Macklem * Check for an otherName component of subjectAltName where the OID 848b9cbc85dSRick Macklem * matches and the "domain" matches that of this server. 849b9cbc85dSRick Macklem * If found, map "user" to a <uid, gidlist> for it. 850b9cbc85dSRick Macklem */ 851b9cbc85dSRick Macklem static int 852b9cbc85dSRick Macklem rpctls_cnname(X509 *cert, uint32_t *uidp, int *ngrps, uint32_t *gidp) 853b9cbc85dSRick Macklem { 854b9cbc85dSRick Macklem char *cp, usern[1024 + 1]; 855b9cbc85dSRick Macklem struct passwd *pwd; 856b9cbc85dSRick Macklem gid_t gids[NGROUPS]; 857b9cbc85dSRick Macklem int i, j; 858b9cbc85dSRick Macklem GENERAL_NAMES *genlist; 859b9cbc85dSRick Macklem GENERAL_NAME *genname; 860b9cbc85dSRick Macklem OTHERNAME *val; 861b9cbc85dSRick Macklem size_t slen; 862b9cbc85dSRick Macklem 863b9cbc85dSRick Macklem /* First, find the otherName in the subjectAltName. */ 864b9cbc85dSRick Macklem genlist = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL); 865b9cbc85dSRick Macklem if (genlist == NULL) 866b9cbc85dSRick Macklem return (0); 867b9cbc85dSRick Macklem cp = NULL; 868b9cbc85dSRick Macklem for (i = 0; i < sk_GENERAL_NAME_num(genlist); i++) { 869b9cbc85dSRick Macklem genname = sk_GENERAL_NAME_value(genlist, i); 870b9cbc85dSRick Macklem if (genname->type != GEN_OTHERNAME) 871b9cbc85dSRick Macklem continue; 872b9cbc85dSRick Macklem val = genname->d.otherName; 873b9cbc85dSRick Macklem 874b9cbc85dSRick Macklem /* Check to see that it is the correct OID. */ 875b9cbc85dSRick Macklem slen = i2t_ASN1_OBJECT(usern, sizeof(usern), val->type_id); 876b9cbc85dSRick Macklem if (slen != strlen(rpctls_cnuseroid) || memcmp(usern, 877b9cbc85dSRick Macklem rpctls_cnuseroid, slen) != 0) 878b9cbc85dSRick Macklem continue; 879b9cbc85dSRick Macklem 880b9cbc85dSRick Macklem /* Sanity check the otherName. */ 881b9cbc85dSRick Macklem if (val->value->type != V_ASN1_UTF8STRING || 882b9cbc85dSRick Macklem val->value->value.utf8string->length < 3 || 883b9cbc85dSRick Macklem (size_t)val->value->value.utf8string->length > sizeof(usern) 884b9cbc85dSRick Macklem - 1) { 885b9cbc85dSRick Macklem rpctls_verbose_out("rpctls_cnname: invalid cnuser " 886b9cbc85dSRick Macklem "type=%d\n", val->value->type); 887b9cbc85dSRick Macklem continue; 888b9cbc85dSRick Macklem } 889b9cbc85dSRick Macklem 890b9cbc85dSRick Macklem /* Look for a "user" in the otherName */ 891b9cbc85dSRick Macklem memcpy(usern, val->value->value.utf8string->data, 892b9cbc85dSRick Macklem val->value->value.utf8string->length); 893b9cbc85dSRick Macklem usern[val->value->value.utf8string->length] = '\0'; 894b9cbc85dSRick Macklem 895b9cbc85dSRick Macklem /* Now, look for the @dnsname suffix in the commonName. */ 896b9cbc85dSRick Macklem cp = strcasestr(usern, rpctls_dnsname); 897b9cbc85dSRick Macklem if (cp == NULL) 898b9cbc85dSRick Macklem continue; 899b9cbc85dSRick Macklem if (*(cp + strlen(rpctls_dnsname)) != '\0') { 900b9cbc85dSRick Macklem cp = NULL; 901b9cbc85dSRick Macklem continue; 902b9cbc85dSRick Macklem } 903b9cbc85dSRick Macklem *cp = '\0'; 904b9cbc85dSRick Macklem break; 905b9cbc85dSRick Macklem } 906b9cbc85dSRick Macklem if (cp == NULL) 907b9cbc85dSRick Macklem return (0); 908b9cbc85dSRick Macklem 909b9cbc85dSRick Macklem /* See if the "user" is in the passwd database. */ 910b9cbc85dSRick Macklem pwd = getpwnam(usern); 911b9cbc85dSRick Macklem if (pwd == NULL) 912b9cbc85dSRick Macklem return (0); 913b9cbc85dSRick Macklem *uidp = pwd->pw_uid; 914b9cbc85dSRick Macklem *ngrps = NGROUPS; 915b9cbc85dSRick Macklem if (getgrouplist(pwd->pw_name, pwd->pw_gid, gids, ngrps) < 0) 916b9cbc85dSRick Macklem return (0); 917b9cbc85dSRick Macklem rpctls_verbose_out("mapped user=%s ngrps=%d uid=%d\n", pwd->pw_name, 918b9cbc85dSRick Macklem *ngrps, pwd->pw_uid); 919b9cbc85dSRick Macklem for (j = 0; j < *ngrps; j++) 920b9cbc85dSRick Macklem gidp[j] = gids[j]; 921b9cbc85dSRick Macklem return (1); 922b9cbc85dSRick Macklem } 923b9cbc85dSRick Macklem 924b9cbc85dSRick Macklem static void 925b9cbc85dSRick Macklem rpctls_huphandler(int sig __unused) 926b9cbc85dSRick Macklem { 927b9cbc85dSRick Macklem 928b9cbc85dSRick Macklem rpctls_gothup = true; 929b9cbc85dSRick Macklem } 930