2 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 #include <sys/types.h>
32 #include <sys/socket.h>
34 #include <netinet/in.h>
35 #include <arpa/inet.h>
43 host_bind(const char *host
, const char *port
, int verbose
)
45 struct addrinfo hints
, *si
, *p
;
49 memset(&hints
, 0, sizeof hints
);
50 hints
.ai_family
= PF_UNSPEC
;
51 hints
.ai_socktype
= SOCK_STREAM
;
52 err
= getaddrinfo(host
, port
, &hints
, &si
);
54 fprintf(stderr
, "ERROR: getaddrinfo(): %s\n",
59 for (p
= si
; p
!= NULL
; p
= p
->ai_next
) {
61 struct sockaddr_in sa4
;
62 struct sockaddr_in6 sa6
;
65 char tmp
[INET6_ADDRSTRLEN
+ 50];
68 sa
= (struct sockaddr
*)p
->ai_addr
;
69 if (sa
->sa_family
== AF_INET
) {
70 sa4
= *(struct sockaddr_in
*)sa
;
71 sa
= (struct sockaddr
*)&sa4
;
75 sa4
.sin_addr
.s_addr
= INADDR_ANY
;
77 } else if (sa
->sa_family
== AF_INET6
) {
78 sa6
= *(struct sockaddr_in6
*)sa
;
79 sa
= (struct sockaddr
*)&sa6
;
81 addr
= &sa6
.sin6_addr
;
83 sa6
.sin6_addr
= in6addr_any
;
87 sa_len
= p
->ai_addrlen
;
90 if (!inet_ntop(p
->ai_family
, addr
, tmp
, sizeof tmp
)) {
91 strcpy(tmp
, "<invalid>");
94 sprintf(tmp
, "<unknown family: %d>",
98 fprintf(stderr
, "binding to: %s\n", tmp
);
100 fd
= socket(p
->ai_family
, p
->ai_socktype
, p
->ai_protocol
);
108 setsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &opt
, sizeof opt
);
110 setsockopt(fd
, IPPROTO_IPV6
, IPV6_V6ONLY
, &opt
, sizeof opt
);
111 if (bind(fd
, sa
, sa_len
) < 0) {
122 fprintf(stderr
, "ERROR: failed to bind\n");
126 if (listen(fd
, 5) < 0) {
134 fprintf(stderr
, "bound.\n");
140 accept_client(int server_fd
, int verbose
)
147 fd
= accept(server_fd
, &sa
, &sa_len
);
155 char tmp
[INET6_ADDRSTRLEN
+ 50];
159 switch (sa
.sa_family
) {
161 name
= inet_ntop(AF_INET
,
162 &((struct sockaddr_in
*)&sa
)->sin_addr
,
166 name
= inet_ntop(AF_INET6
,
167 &((struct sockaddr_in6
*)&sa
)->sin6_addr
,
172 sprintf(tmp
, "<unknown: %lu>",
173 (unsigned long)sa
.sa_family
);
176 fprintf(stderr
, "accepting connection from: %s\n", name
);
180 * We make the socket non-blocking, since we are going to use
181 * poll() to organise I/O.
183 fcntl(fd
, F_SETFL
, O_NONBLOCK
);
191 "usage: brssl server [ options ]\n");
195 " -q suppress verbose messages\n");
197 " -trace activate extra debug messages (dump of all packets)\n");
199 " -b name bind to a specific address or host name\n");
201 " -p port bind to a specific port (default: 4433)\n");
203 " -mono use monodirectional buffering\n");
205 " -buf length set the I/O buffer length (in bytes)\n");
207 " -cache length set the session cache storage length (in bytes)\n");
209 " -cert fname read certificate chain from file 'fname'\n");
211 " -key fname read private key from file 'fname'\n");
213 " -list list supported names (protocols, algorithms...)\n");
215 " -vmin name set minimum supported version (default: TLS-1.0)\n");
217 " -vmax name set maximum supported version (default: TLS-1.2)\n");
219 " -cs names set list of supported cipher suites (comma-separated)\n");
221 " -hf names add support for some hash functions (comma-separated)\n");
223 " -serverpref enforce server's preferences for cipher suites\n");
228 const br_ssl_server_policy_class
*vtable
;
230 br_x509_certificate
*chain
;
232 int cert_signer_algo
;
237 get_cert_signer_algo(br_x509_certificate
*xc
)
239 br_x509_decoder_context dc
;
242 br_x509_decoder_init(&dc
, 0, 0);
243 br_x509_decoder_push(&dc
, xc
->data
, xc
->data_len
);
244 err
= br_x509_decoder_last_error(&dc
);
248 return br_x509_decoder_get_signer_key_type(&dc
);
253 sp_choose(const br_ssl_server_policy_class
**pctx
,
254 const br_ssl_server_context
*cc
,
255 br_ssl_server_choices
*choices
)
258 const br_suite_translated
*st
;
263 pc
= (policy_context
*)pctx
;
264 st
= br_ssl_server_get_client_suites(cc
, &st_num
);
265 chashes
= br_ssl_server_get_client_hashes(cc
);
266 for (hash_id
= 6; hash_id
>= 2; hash_id
--) {
267 if ((chashes
>> hash_id
) & 1) {
272 fprintf(stderr
, "Client parameters:\n");
273 fprintf(stderr
, " Maximum version: ");
274 switch (cc
->client_max_version
) {
276 fprintf(stderr
, "SSL 3.0");
279 fprintf(stderr
, "TLS 1.0");
282 fprintf(stderr
, "TLS 1.1");
285 fprintf(stderr
, "TLS 1.2");
288 fprintf(stderr
, "unknown (0x%04X)",
289 (unsigned)cc
->client_max_version
);
292 fprintf(stderr
, "\n");
293 fprintf(stderr
, " Compatible cipher suites:\n");
294 for (u
= 0; u
< st_num
; u
++) {
297 get_suite_name_ext(st
[u
][0], csn
, sizeof csn
);
298 fprintf(stderr
, " %s\n", csn
);
300 fprintf(stderr
, " Common hash functions:");
301 for (u
= 2; u
<= 6; u
++) {
302 if ((chashes
>> u
) & 1) {
306 case 3: z
= 224; break;
307 case 4: z
= 256; break;
308 case 5: z
= 384; break;
309 case 6: z
= 512; break;
314 fprintf(stderr
, " sha%d", z
);
317 fprintf(stderr
, "\n");
319 for (u
= 0; u
< st_num
; u
++) {
325 if (pc
->sk
->key_type
== BR_KEYTYPE_RSA
) {
326 choices
->cipher_suite
= st
[u
][0];
330 case BR_SSLKEYX_ECDHE_RSA
:
331 if (pc
->sk
->key_type
== BR_KEYTYPE_RSA
) {
332 choices
->cipher_suite
= st
[u
][0];
333 choices
->hash_id
= hash_id
;
337 case BR_SSLKEYX_ECDHE_ECDSA
:
338 if (pc
->sk
->key_type
== BR_KEYTYPE_EC
) {
339 choices
->cipher_suite
= st
[u
][0];
340 choices
->hash_id
= hash_id
;
344 case BR_SSLKEYX_ECDH_RSA
:
345 if (pc
->sk
->key_type
== BR_KEYTYPE_EC
346 && pc
->cert_signer_algo
== BR_KEYTYPE_RSA
)
348 choices
->cipher_suite
= st
[u
][0];
352 case BR_SSLKEYX_ECDH_ECDSA
:
353 if (pc
->sk
->key_type
== BR_KEYTYPE_EC
354 && pc
->cert_signer_algo
== BR_KEYTYPE_EC
)
356 choices
->cipher_suite
= st
[u
][0];
365 choices
->chain
= pc
->chain
;
366 choices
->chain_len
= pc
->chain_len
;
370 get_suite_name_ext(choices
->cipher_suite
, csn
, sizeof csn
);
371 fprintf(stderr
, "Using: %s\n", csn
);
377 sp_do_keyx(const br_ssl_server_policy_class
**pctx
,
378 unsigned char *data
, size_t len
)
382 pc
= (policy_context
*)pctx
;
383 switch (pc
->sk
->key_type
) {
385 return br_rsa_ssl_decrypt(
386 &br_rsa_i31_private
, &pc
->sk
->key
.rsa
,
389 return br_ec_prime_i31
.mul(data
, len
, pc
->sk
->key
.ec
.x
,
390 pc
->sk
->key
.ec
.xlen
, pc
->sk
->key
.ec
.curve
);
392 fprintf(stderr
, "ERROR: unknown private key type (%d)\n",
393 (int)pc
->sk
->key_type
);
399 * OID for hash functions in RSA signatures.
401 static const unsigned char HASH_OID_SHA1
[] = {
402 0x05, 0x2B, 0x0E, 0x03, 0x02, 0x1A
405 static const unsigned char HASH_OID_SHA224
[] = {
406 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x04
409 static const unsigned char HASH_OID_SHA256
[] = {
410 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01
413 static const unsigned char HASH_OID_SHA384
[] = {
414 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02
417 static const unsigned char HASH_OID_SHA512
[] = {
418 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03
421 static const unsigned char *HASH_OID
[] = {
429 static const br_hash_class
*
430 get_hash_impl(int hash_id
)
434 for (u
= 0; hash_functions
[u
].name
; u
++) {
435 const br_hash_class
*hc
;
438 hc
= hash_functions
[u
].hclass
;
439 id
= (hc
->desc
>> BR_HASHDESC_ID_OFF
) & BR_HASHDESC_ID_MASK
;
448 sp_do_sign(const br_ssl_server_policy_class
**pctx
,
449 int hash_id
, size_t hv_len
, unsigned char *data
, size_t len
)
452 unsigned char hv
[64];
454 pc
= (policy_context
*)pctx
;
455 memcpy(hv
, data
, hv_len
);
456 switch (pc
->sk
->key_type
) {
459 const unsigned char *hash_oid
;
460 const br_hash_class
*hc
;
465 } else if (hash_id
>= 2 && hash_id
<= 6) {
466 hash_oid
= HASH_OID
[hash_id
- 2];
469 fprintf(stderr
, "ERROR: cannot RSA-sign with"
470 " unknown hash function: %d\n",
475 sig_len
= (pc
->sk
->key
.rsa
.n_bitlen
+ 7) >> 3;
478 fprintf(stderr
, "ERROR: cannot RSA-sign,"
479 " buffer is too small"
480 " (sig=%lu, buf=%lu)\n",
481 (unsigned long)sig_len
,
486 x
= br_rsa_i31_pkcs1_sign(hash_oid
, hv
, hv_len
,
487 &pc
->sk
->key
.rsa
, data
);
490 fprintf(stderr
, "ERROR: RSA-sign failure\n");
497 hc
= get_hash_impl(hash_id
);
500 fprintf(stderr
, "ERROR: cannot RSA-sign with"
501 " unknown hash function: %d\n",
508 fprintf(stderr
, "ERROR: cannot ECDSA-sign"
509 " (output buffer = %lu)\n",
514 sig_len
= br_ecdsa_i31_sign_asn1(&br_ec_prime_i31
,
515 hc
, hv
, &pc
->sk
->key
.ec
, data
);
518 fprintf(stderr
, "ERROR: ECDSA-sign failure\n");
529 static const br_ssl_server_policy_class policy_vtable
= {
530 sizeof(policy_context
),
538 do_server(int argc
, char *argv
[])
544 const char *bind_name
;
547 cipher_suite
*suites
;
551 br_x509_certificate
*chain
;
553 int cert_signer_algo
;
556 br_ssl_server_context cc
;
558 br_ssl_session_cache_lru lru
;
559 unsigned char *iobuf
, *cache
;
560 size_t iobuf_len
, cache_len
;
582 cache_len
= (size_t)-1;
586 for (i
= 0; i
< argc
; i
++) {
592 goto server_exit_error
;
594 if (eqstr(arg
, "-v") || eqstr(arg
, "-verbose")) {
596 } else if (eqstr(arg
, "-q") || eqstr(arg
, "-quiet")) {
598 } else if (eqstr(arg
, "-trace")) {
600 } else if (eqstr(arg
, "-b")) {
603 "ERROR: no argument for '-b'\n");
605 goto server_exit_error
;
607 if (bind_name
!= NULL
) {
608 fprintf(stderr
, "ERROR: duplicate bind host\n");
610 goto server_exit_error
;
613 } else if (eqstr(arg
, "-p")) {
616 "ERROR: no argument for '-p'\n");
618 goto server_exit_error
;
621 fprintf(stderr
, "ERROR: duplicate bind port\n");
623 goto server_exit_error
;
626 } else if (eqstr(arg
, "-mono")) {
628 } else if (eqstr(arg
, "-buf")) {
631 "ERROR: no argument for '-buf'\n");
633 goto server_exit_error
;
636 if (iobuf_len
!= 0) {
638 "ERROR: duplicate I/O buffer length\n");
640 goto server_exit_error
;
642 iobuf_len
= parse_size(arg
);
643 if (iobuf_len
== (size_t)-1) {
645 goto server_exit_error
;
647 } else if (eqstr(arg
, "-cache")) {
650 "ERROR: no argument for '-cache'\n");
652 goto server_exit_error
;
655 if (cache_len
!= (size_t)-1) {
656 fprintf(stderr
, "ERROR: duplicate session"
659 goto server_exit_error
;
661 cache_len
= parse_size(arg
);
662 if (cache_len
== (size_t)-1) {
664 goto server_exit_error
;
666 } else if (eqstr(arg
, "-cert")) {
669 "ERROR: no argument for '-cert'\n");
671 goto server_exit_error
;
675 "ERROR: duplicate certificate chain\n");
677 goto server_exit_error
;
680 chain
= read_certificates(arg
, &chain_len
);
681 if (chain
== NULL
|| chain_len
== 0) {
682 goto server_exit_error
;
684 } else if (eqstr(arg
, "-key")) {
687 "ERROR: no argument for '-key'\n");
689 goto server_exit_error
;
693 "ERROR: duplicate private key\n");
695 goto server_exit_error
;
698 sk
= read_private_key(arg
);
700 goto server_exit_error
;
702 } else if (eqstr(arg
, "-list")) {
705 } else if (eqstr(arg
, "-vmin")) {
708 "ERROR: no argument for '-vmin'\n");
710 goto server_exit_error
;
715 "ERROR: duplicate minimum version\n");
717 goto server_exit_error
;
719 vmin
= parse_version(arg
, strlen(arg
));
722 "ERROR: unrecognised version '%s'\n",
725 goto server_exit_error
;
727 } else if (eqstr(arg
, "-vmax")) {
730 "ERROR: no argument for '-vmax'\n");
732 goto server_exit_error
;
737 "ERROR: duplicate maximum version\n");
739 goto server_exit_error
;
741 vmax
= parse_version(arg
, strlen(arg
));
744 "ERROR: unrecognised version '%s'\n",
747 goto server_exit_error
;
749 } else if (eqstr(arg
, "-cs")) {
752 "ERROR: no argument for '-cs'\n");
754 goto server_exit_error
;
757 if (suites
!= NULL
) {
758 fprintf(stderr
, "ERROR: duplicate list"
759 " of cipher suites\n");
761 goto server_exit_error
;
763 suites
= parse_suites(arg
, &num_suites
);
764 if (suites
== NULL
) {
766 goto server_exit_error
;
768 } else if (eqstr(arg
, "-hf")) {
773 "ERROR: no argument for '-hf'\n");
775 goto server_exit_error
;
778 x
= parse_hash_functions(arg
);
781 goto server_exit_error
;
784 } else if (eqstr(arg
, "-serverpref")) {
785 flags
|= BR_OPT_ENFORCE_SERVER_PREFERENCES
;
787 fprintf(stderr
, "ERROR: unknown option: '%s'\n", arg
);
789 goto server_exit_error
;
802 fprintf(stderr
, "ERROR: impossible minimum/maximum protocol"
803 " version combination\n");
805 goto server_exit_error
;
807 if (suites
== NULL
) {
810 for (u
= 0; cipher_suites
[u
].name
; u
++) {
811 if ((cipher_suites
[u
].req
& REQ_TLS12
) == 0
817 suites
= xmalloc(num_suites
* sizeof *suites
);
819 for (u
= 0; cipher_suites
[u
].name
; u
++) {
820 if ((cipher_suites
[u
].req
& REQ_TLS12
) == 0
823 suites
[num_suites
++] = cipher_suites
[u
];
828 hfuns
= (unsigned)-1;
830 if (chain
== NULL
|| chain_len
== 0) {
831 fprintf(stderr
, "ERROR: no certificate chain provided\n");
832 goto server_exit_error
;
835 fprintf(stderr
, "ERROR: no private key provided\n");
836 goto server_exit_error
;
838 switch (sk
->key_type
) {
845 curve
= sk
->key
.ec
.curve
;
846 supp
= br_ec_prime_i31
.supported_curves
;
847 if (curve
> 31 || !((supp
>> curve
) & 1)) {
848 fprintf(stderr
, "ERROR: private key curve (%d)"
849 " is not supported\n", curve
);
850 goto server_exit_error
;
854 fprintf(stderr
, "ERROR: unsupported private key type (%d)\n",
858 cert_signer_algo
= get_cert_signer_algo(chain
);
859 if (cert_signer_algo
< 0) {
860 fprintf(stderr
, "ERROR: server certificate cannot be"
861 " decoded (err=%d)\n", -cert_signer_algo
);
862 goto server_exit_error
;
863 } else if (verbose
) {
866 switch (cert_signer_algo
) {
867 case BR_KEYTYPE_RSA
: csas
= "RSA"; break;
868 case BR_KEYTYPE_EC
: csas
= "EC"; break;
873 fprintf(stderr
, "Issuing CA key type: %d (%s)\n",
874 cert_signer_algo
, csas
);
876 if (iobuf_len
== 0) {
878 iobuf_len
= BR_SSL_BUFSIZE_BIDI
;
880 iobuf_len
= BR_SSL_BUFSIZE_MONO
;
883 iobuf
= xmalloc(iobuf_len
);
884 if (cache_len
== (size_t)-1) {
887 cache
= xmalloc(cache_len
);
890 * Compute implementation requirements and inject implementations.
892 suite_ids
= xmalloc(num_suites
* sizeof *suite_ids
);
893 br_ssl_server_zero(&cc
);
894 br_ssl_engine_set_versions(&cc
.eng
, vmin
, vmax
);
895 br_ssl_server_set_all_flags(&cc
, flags
);
896 if (vmin
<= BR_TLS11
) {
897 if (!(hfuns
& (1 << br_md5_ID
))) {
898 fprintf(stderr
, "ERROR: TLS 1.0 and 1.1 need MD5\n");
899 goto server_exit_error
;
901 if (!(hfuns
& (1 << br_sha1_ID
))) {
902 fprintf(stderr
, "ERROR: TLS 1.0 and 1.1 need SHA-1\n");
903 goto server_exit_error
;
906 for (u
= 0; u
< num_suites
; u
++) {
910 suite_ids
[u
] = suites
[u
].suite
;
911 if ((req
& REQ_TLS12
) != 0 && vmax
< BR_TLS12
) {
913 "ERROR: cipher suite %s requires TLS 1.2\n",
915 goto server_exit_error
;
917 if ((req
& REQ_SHA1
) != 0 && !(hfuns
& (1 << br_sha1_ID
))) {
919 "ERROR: cipher suite %s requires SHA-1\n",
921 goto server_exit_error
;
923 if ((req
& REQ_SHA256
) != 0 && !(hfuns
& (1 << br_sha256_ID
))) {
925 "ERROR: cipher suite %s requires SHA-256\n",
927 goto server_exit_error
;
929 if ((req
& REQ_SHA384
) != 0 && !(hfuns
& (1 << br_sha384_ID
))) {
931 "ERROR: cipher suite %s requires SHA-384\n",
933 goto server_exit_error
;
935 /* TODO: algorithm implementation selection */
936 if ((req
& REQ_AESCBC
) != 0) {
937 br_ssl_engine_set_aes_cbc(&cc
.eng
,
938 &br_aes_ct_cbcenc_vtable
,
939 &br_aes_ct_cbcdec_vtable
);
940 br_ssl_engine_set_cbc(&cc
.eng
,
941 &br_sslrec_in_cbc_vtable
,
942 &br_sslrec_out_cbc_vtable
);
944 if ((req
& REQ_AESGCM
) != 0) {
945 br_ssl_engine_set_aes_ctr(&cc
.eng
,
946 &br_aes_ct_ctr_vtable
);
947 br_ssl_engine_set_ghash(&cc
.eng
,
949 br_ssl_engine_set_gcm(&cc
.eng
,
950 &br_sslrec_in_gcm_vtable
,
951 &br_sslrec_out_gcm_vtable
);
953 if ((req
& REQ_3DESCBC
) != 0) {
954 br_ssl_engine_set_des_cbc(&cc
.eng
,
955 &br_des_ct_cbcenc_vtable
,
956 &br_des_ct_cbcdec_vtable
);
957 br_ssl_engine_set_cbc(&cc
.eng
,
958 &br_sslrec_in_cbc_vtable
,
959 &br_sslrec_out_cbc_vtable
);
961 if ((req
& (REQ_ECDHE_RSA
| REQ_ECDHE_ECDSA
)) != 0) {
962 br_ssl_engine_set_ec(&cc
.eng
, &br_ec_prime_i31
);
965 br_ssl_engine_set_suites(&cc
.eng
, suite_ids
, num_suites
);
967 for (u
= 0; hash_functions
[u
].name
; u
++) {
968 const br_hash_class
*hc
;
971 hc
= hash_functions
[u
].hclass
;
972 id
= (hc
->desc
>> BR_HASHDESC_ID_OFF
) & BR_HASHDESC_ID_MASK
;
973 if ((hfuns
& ((unsigned)1 << id
)) != 0) {
974 br_ssl_engine_set_hash(&cc
.eng
, id
, hc
);
977 if (vmin
<= BR_TLS11
) {
978 br_ssl_engine_set_prf10(&cc
.eng
, &br_tls10_prf
);
980 if (vmax
>= BR_TLS12
) {
981 if ((hfuns
& ((unsigned)1 << br_sha256_ID
)) != 0) {
982 br_ssl_engine_set_prf_sha256(&cc
.eng
,
983 &br_tls12_sha256_prf
);
985 if ((hfuns
& ((unsigned)1 << br_sha384_ID
)) != 0) {
986 br_ssl_engine_set_prf_sha384(&cc
.eng
,
987 &br_tls12_sha384_prf
);
991 br_ssl_session_cache_lru_init(&lru
, cache
, cache_len
);
992 br_ssl_server_set_cache(&cc
, &lru
.vtable
);
994 pc
.vtable
= &policy_vtable
;
995 pc
.verbose
= verbose
;
997 pc
.chain_len
= chain_len
;
998 pc
.cert_signer_algo
= cert_signer_algo
;
1000 br_ssl_server_set_policy(&cc
, &pc
.vtable
);
1002 br_ssl_engine_set_buffer(&cc
.eng
, iobuf
, iobuf_len
, bidi
);
1005 * Open the server socket.
1007 server_fd
= host_bind(bind_name
, port
, verbose
);
1008 if (server_fd
< 0) {
1009 goto server_exit_error
;
1013 * Process incoming clients, one at a time. Note that we do not
1014 * accept any client until the previous connection has finished:
1015 * this is voluntary, since the tool uses stdin/stdout for
1016 * application data, and thus cannot really run two connections
1022 fd
= accept_client(server_fd
, verbose
);
1024 goto server_exit_error
;
1026 br_ssl_server_reset(&cc
);
1027 x
= run_ssl_engine(&cc
.eng
, fd
,
1028 (verbose
? RUN_ENGINE_VERBOSE
: 0)
1029 | (trace
? RUN_ENGINE_TRACE
: 0));
1033 goto server_exit_error
;
1038 * Release allocated structures.
1043 if (chain
!= NULL
) {
1044 for (u
= 0; u
< chain_len
; u
++) {
1045 xfree(chain
[u
].data
);
1049 free_private_key(sk
);