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/* $OpenBSD: s_server.c,v 1.59 2023/12/29 12:15:49 tb Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* 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 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
/* ====================================================================
* Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
*
* 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.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS 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.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
* ECC cipher suite support in OpenSSL originally developed by
* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
*/
/* ====================================================================
* Copyright 2005 Nokia. All rights reserved.
*
* The portions of the attached software ("Contribution") is developed by
* Nokia Corporation and is licensed pursuant to the OpenSSL open source
* license.
*
* The Contribution, originally written by Mika Kousa and Pasi Eronen of
* Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
* support (see RFC 4279) to OpenSSL.
*
* No patent licenses or other rights except those expressly stated in
* the OpenSSL open source license shall be deemed granted or received
* expressly, by implication, estoppel, or otherwise.
*
* No assurances are provided by Nokia that the Contribution does not
* infringe the patent or other intellectual property rights of any third
* party or that the license provides you with all the necessary rights
* to make use of the Contribution.
*
* THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
* ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
* SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
* OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
* OTHERWISE.
*/
/* Until the key-gen callbacks are modified to use newer prototypes, we allow
* deprecated functions for openssl-internal code */
#ifdef OPENSSL_NO_DEPRECATED
#undef OPENSSL_NO_DEPRECATED
#endif
#include <sys/types.h>
#include <sys/socket.h>
#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <unistd.h>
#include <poll.h>
#include "apps.h"
#include <openssl/bn.h>
#include <openssl/err.h>
#include <openssl/lhash.h>
#include <openssl/ocsp.h>
#include <openssl/pem.h>
#include <openssl/ssl.h>
#include <openssl/x509.h>
#ifndef OPENSSL_NO_DH
#include <openssl/dh.h>
#endif
#include <openssl/rsa.h>
#include "s_apps.h"
#include "timeouts.h"
static void s_server_init(void);
static void sv_usage(void);
static void print_stats(BIO *bp, SSL_CTX *ctx);
static int sv_body(int s, unsigned char *context);
static void close_accept_socket(void);
static int init_ssl_connection(SSL *s);
#ifndef OPENSSL_NO_DH
static DH *load_dh_param(const char *dhfile);
#endif
static int www_body(int s, unsigned char *context);
static int generate_session_id(const SSL *ssl, unsigned char *id,
unsigned int *id_len);
static int ssl_servername_cb(SSL *s, int *ad, void *arg);
static int cert_status_cb(SSL * s, void *arg);
static int alpn_cb(SSL *s, const unsigned char **out, unsigned char *outlen,
const unsigned char *in, unsigned int inlen, void *arg);
/* static int load_CA(SSL_CTX *ctx, char *file);*/
#define BUFSIZZ 16*1024
static int bufsize = BUFSIZZ;
static int accept_socket = -1;
#define TEST_CERT "server.pem"
#define TEST_CERT2 "server2.pem"
static int s_server_session_id_context = 1; /* anything will do */
static SSL_CTX *ctx = NULL;
static SSL_CTX *ctx2 = NULL;
static BIO *bio_s_out = NULL;
static int local_argc = 0;
static char **local_argv;
/* This is a context that we pass to callbacks */
typedef struct tlsextctx_st {
char *servername;
BIO *biodebug;
int extension_error;
} tlsextctx;
/* Structure passed to cert status callback */
typedef struct tlsextstatusctx_st {
/* Default responder to use */
char *host, *path, *port;
int use_ssl;
int timeout;
BIO *err;
int verbose;
} tlsextstatusctx;
/* This the context that we pass to alpn_cb */
typedef struct tlsextalpnctx_st {
unsigned char *data;
unsigned short len;
} tlsextalpnctx;
static struct {
char *alpn_in;
char *npn_in; /* Ignored. */
int bugs;
char *CAfile;
char *CApath;
#ifndef OPENSSL_NO_DTLS
int cert_chain;
#endif
char *cert_file;
char *cert_file2;
int cert_format;
char *cipher;
unsigned char *context;
int crlf;
char *dcert_file;
int dcert_format;
int debug;
char *dhfile;
char *dkey_file;
int dkey_format;
char *dpassarg;
int enable_timeouts;
const char *errstr;
char *groups_in;
char *key_file;
char *key_file2;
int key_format;
char *keymatexportlabel;
int keymatexportlen;
uint16_t max_version;
uint16_t min_version;
const SSL_METHOD *meth;
int msg;
int naccept;
char *named_curve;
int nbio;
int nbio_test;
int no_cache;
int nocert;
int no_dhe;
int no_ecdhe;
int no_tmp_rsa; /* No-op. */
int off;
char *passarg;
short port;
int quiet;
int server_verify;
char *session_id_prefix;
long socket_mtu;
int socket_type;
#ifndef OPENSSL_NO_SRTP
char *srtp_profiles;
#endif
int state;
tlsextstatusctx tlscstatp;
tlsextctx tlsextcbp;
int tlsextdebug;
int tlsextstatus;
X509_VERIFY_PARAM *vpm;
int www;
} cfg;
static int
s_server_opt_context(char *arg)
{
cfg.context = (unsigned char *) arg;
return (0);
}
static int
s_server_opt_keymatexportlen(char *arg)
{
cfg.keymatexportlen = strtonum(arg, 1, INT_MAX,
&cfg.errstr);
if (cfg.errstr != NULL) {
BIO_printf(bio_err, "invalid argument %s: %s\n",
arg, cfg.errstr);
return (1);
}
return (0);
}
#ifndef OPENSSL_NO_DTLS
static int
s_server_opt_mtu(char *arg)
{
cfg.socket_mtu = strtonum(arg, 0, LONG_MAX,
&cfg.errstr);
if (cfg.errstr != NULL) {
BIO_printf(bio_err, "invalid argument %s: %s\n",
arg, cfg.errstr);
return (1);
}
return (0);
}
#endif
#ifndef OPENSSL_NO_DTLS
static int
s_server_opt_protocol_version_dtls(void)
{
cfg.meth = DTLS_server_method();
cfg.socket_type = SOCK_DGRAM;
return (0);
}
#endif
#ifndef OPENSSL_NO_DTLS1_2
static int
s_server_opt_protocol_version_dtls1_2(void)
{
cfg.meth = DTLS_server_method();
cfg.min_version = DTLS1_2_VERSION;
cfg.max_version = DTLS1_2_VERSION;
cfg.socket_type = SOCK_DGRAM;
return (0);
}
#endif
static int
s_server_opt_protocol_version_tls1_2(void)
{
cfg.min_version = TLS1_2_VERSION;
cfg.max_version = TLS1_2_VERSION;
return (0);
}
static int
s_server_opt_protocol_version_tls1_3(void)
{
cfg.min_version = TLS1_3_VERSION;
cfg.max_version = TLS1_3_VERSION;
return (0);
}
static int
s_server_opt_nbio_test(void)
{
cfg.nbio = 1;
cfg.nbio_test = 1;
return (0);
}
static int
s_server_opt_port(char *arg)
{
if (!extract_port(arg, &cfg.port))
return (1);
return (0);
}
static int
s_server_opt_status_timeout(char *arg)
{
cfg.tlsextstatus = 1;
cfg.tlscstatp.timeout = strtonum(arg, 0, INT_MAX,
&cfg.errstr);
if (cfg.errstr != NULL) {
BIO_printf(bio_err, "invalid argument %s: %s\n",
arg, cfg.errstr);
return (1);
}
return (0);
}
static int
s_server_opt_status_url(char *arg)
{
cfg.tlsextstatus = 1;
if (!OCSP_parse_url(arg, &cfg.tlscstatp.host,
&cfg.tlscstatp.port, &cfg.tlscstatp.path,
&cfg.tlscstatp.use_ssl)) {
BIO_printf(bio_err, "Error parsing URL\n");
return (1);
}
return (0);
}
static int
s_server_opt_status_verbose(void)
{
cfg.tlsextstatus = 1;
cfg.tlscstatp.verbose = 1;
return (0);
}
static int
s_server_opt_verify(char *arg)
{
cfg.server_verify = SSL_VERIFY_PEER |
SSL_VERIFY_CLIENT_ONCE;
verify_depth = strtonum(arg, 0, INT_MAX, &cfg.errstr);
if (cfg.errstr != NULL) {
BIO_printf(bio_err, "invalid argument %s: %s\n",
arg, cfg.errstr);
return (1);
}
BIO_printf(bio_err, "verify depth is %d\n", verify_depth);
return (0);
}
static int
s_server_opt_verify_fail(char *arg)
{
cfg.server_verify = SSL_VERIFY_PEER |
SSL_VERIFY_FAIL_IF_NO_PEER_CERT | SSL_VERIFY_CLIENT_ONCE;
verify_depth = strtonum(arg, 0, INT_MAX, &cfg.errstr);
if (cfg.errstr != NULL) {
BIO_printf(bio_err, "invalid argument %s: %s\n",
arg, cfg.errstr);
return (1);
}
BIO_printf(bio_err, "verify depth is %d, must return a certificate\n",
verify_depth);
return (0);
}
static int
s_server_opt_verify_param(int argc, char **argv, int *argsused)
{
char **pargs = argv;
int pargc = argc;
int badarg = 0;
if (!args_verify(&pargs, &pargc, &badarg, bio_err,
&cfg.vpm)) {
BIO_printf(bio_err, "unknown option %s\n", *argv);
return (1);
}
if (badarg)
return (1);
*argsused = argc - pargc;
return (0);
}
static const struct option s_server_options[] = {
{
.name = "4",
.type = OPTION_DISCARD,
},
{
.name = "6",
.type = OPTION_DISCARD,
},
{
.name = "accept",
.argname = "port",
.desc = "Port to accept on (default is 4433)",
.type = OPTION_ARG_FUNC,
.opt.argfunc = s_server_opt_port,
},
{
.name = "alpn",
.argname = "protocols",
.desc = "Set the advertised protocols for the ALPN extension"
" (comma-separated list)",
.type = OPTION_ARG,
.opt.arg = &cfg.alpn_in,
},
{
.name = "bugs",
.desc = "Turn on SSL bug compatibility",
.type = OPTION_FLAG,
.opt.flag = &cfg.bugs,
},
{
.name = "CAfile",
.argname = "file",
.desc = "PEM format file of CA certificates",
.type = OPTION_ARG,
.opt.arg = &cfg.CAfile,
},
{
.name = "CApath",
.argname = "directory",
.desc = "PEM format directory of CA certificates",
.type = OPTION_ARG,
.opt.arg = &cfg.CApath,
},
{
.name = "cert",
.argname = "file",
.desc = "Certificate file to use\n"
"(default is " TEST_CERT ")",
.type = OPTION_ARG,
.opt.arg = &cfg.cert_file,
},
{
.name = "cert2",
.argname = "file",
.desc = "Certificate file to use for servername\n"
"(default is " TEST_CERT2 ")",
.type = OPTION_ARG,
.opt.arg = &cfg.cert_file2,
},
{
.name = "certform",
.argname = "fmt",
.desc = "Certificate format (PEM or DER) PEM default",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.cert_format,
},
#ifndef OPENSSL_NO_DTLS
{
.name = "chain",
.type = OPTION_FLAG,
.opt.flag = &cfg.cert_chain,
},
#endif
{
.name = "cipher",
.argname = "list",
.desc = "List of ciphers to enable (see `openssl ciphers`)",
.type = OPTION_ARG,
.opt.arg = &cfg.cipher,
},
{
.name = "context",
.argname = "id",
.desc = "Set session ID context",
.type = OPTION_ARG_FUNC,
.opt.argfunc = s_server_opt_context,
},
{
.name = "crlf",
.desc = "Convert LF from terminal into CRLF",
.type = OPTION_FLAG,
.opt.flag = &cfg.crlf,
},
{
.name = "dcert",
.argname = "file",
.desc = "Second certificate file to use (usually for DSA)",
.type = OPTION_ARG,
.opt.arg = &cfg.dcert_file,
},
{
.name = "dcertform",
.argname = "fmt",
.desc = "Second certificate format (PEM or DER) PEM default",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.dcert_format,
},
{
.name = "debug",
.desc = "Print more output",
.type = OPTION_FLAG,
.opt.flag = &cfg.debug,
},
{
.name = "dhparam",
.argname = "file",
.desc = "DH parameter file to use, in cert file if not specified",
.type = OPTION_ARG,
.opt.arg = &cfg.dhfile,
},
{
.name = "dkey",
.argname = "file",
.desc = "Second private key file to use (usually for DSA)",
.type = OPTION_ARG,
.opt.arg = &cfg.dkey_file,
},
{
.name = "dkeyform",
.argname = "fmt",
.desc = "Second key format (PEM or DER) PEM default",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.dkey_format,
},
{
.name = "dpass",
.argname = "arg",
.desc = "Second private key file pass phrase source",
.type = OPTION_ARG,
.opt.arg = &cfg.dpassarg,
},
#ifndef OPENSSL_NO_DTLS
{
.name = "dtls",
.desc = "Use any version of DTLS",
.type = OPTION_FUNC,
.opt.func = s_server_opt_protocol_version_dtls,
},
#endif
#ifndef OPENSSL_NO_DTLS1_2
{
.name = "dtls1_2",
.desc = "Just use DTLSv1.2",
.type = OPTION_FUNC,
.opt.func = s_server_opt_protocol_version_dtls1_2,
},
#endif
{
.name = "groups",
.argname = "list",
.desc = "Specify EC groups (colon-separated list)",
.type = OPTION_ARG,
.opt.arg = &cfg.groups_in,
},
{
.name = "HTTP",
.desc = "Respond to a 'GET /<path> HTTP/1.0' with file ./<path>",
.type = OPTION_VALUE,
.opt.value = &cfg.www,
.value = 3,
},
{
.name = "id_prefix",
.argname = "arg",
.desc = "Generate SSL/TLS session IDs prefixed by 'arg'",
.type = OPTION_ARG,
.opt.arg = &cfg.session_id_prefix,
},
{
.name = "key",
.argname = "file",
.desc = "Private Key file to use, in cert file if\n"
"not specified (default is " TEST_CERT ")",
.type = OPTION_ARG,
.opt.arg = &cfg.key_file,
},
{
.name = "key2",
.argname = "file",
.desc = "Private Key file to use for servername, in cert file if\n"
"not specified (default is " TEST_CERT2 ")",
.type = OPTION_ARG,
.opt.arg = &cfg.key_file2,
},
{
.name = "keyform",
.argname = "fmt",
.desc = "Key format (PEM or DER) PEM default",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.key_format,
},
{
.name = "keymatexport",
.argname = "label",
.desc = "Export keying material using label",
.type = OPTION_ARG,
.opt.arg = &cfg.keymatexportlabel,
},
{
.name = "keymatexportlen",
.argname = "len",
.desc = "Export len bytes of keying material (default 20)",
.type = OPTION_ARG_FUNC,
.opt.argfunc = s_server_opt_keymatexportlen,
},
{
.name = "legacy_renegotiation",
.type = OPTION_DISCARD,
},
{
.name = "msg",
.desc = "Show protocol messages",
.type = OPTION_FLAG,
.opt.flag = &cfg.msg,
},
#ifndef OPENSSL_NO_DTLS
{
.name = "mtu",
.argname = "mtu",
.desc = "Set link layer MTU",
.type = OPTION_ARG_FUNC,
.opt.argfunc = s_server_opt_mtu,
},
#endif
{
.name = "naccept",
.argname = "num",
.desc = "Terminate after num connections",
.type = OPTION_ARG_INT,
.opt.value = &cfg.naccept
},
{
.name = "named_curve",
.argname = "arg",
.type = OPTION_ARG,
.opt.arg = &cfg.named_curve,
},
{
.name = "nbio",
.desc = "Run with non-blocking I/O",
.type = OPTION_FLAG,
.opt.flag = &cfg.nbio,
},
{
.name = "nbio_test",
.desc = "Test with the non-blocking test bio",
.type = OPTION_FUNC,
.opt.func = s_server_opt_nbio_test,
},
{
.name = "nextprotoneg",
.argname = "arg",
.type = OPTION_ARG,
.opt.arg = &cfg.npn_in, /* Ignored. */
},
{
.name = "no_cache",
.desc = "Disable session cache",
.type = OPTION_FLAG,
.opt.flag = &cfg.no_cache,
},
{
.name = "no_comp",
.desc = "Disable SSL/TLS compression",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.off,
.value = SSL_OP_NO_COMPRESSION,
},
{
.name = "no_dhe",
.desc = "Disable ephemeral DH",
.type = OPTION_FLAG,
.opt.flag = &cfg.no_dhe,
},
{
.name = "no_ecdhe",
.desc = "Disable ephemeral ECDH",
.type = OPTION_FLAG,
.opt.flag = &cfg.no_ecdhe,
},
{
.name = "no_ticket",
.desc = "Disable use of RFC4507bis session tickets",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.off,
.value = SSL_OP_NO_TICKET,
},
{
.name = "no_ssl2",
.type = OPTION_DISCARD,
},
{
.name = "no_ssl3",
.type = OPTION_DISCARD,
},
{
.name = "no_tls1",
.type = OPTION_DISCARD,
},
{
.name = "no_tls1_1",
.type = OPTION_DISCARD,
},
{
.name = "no_tls1_2",
.desc = "Just disable TLSv1.2",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.off,
.value = SSL_OP_NO_TLSv1_2,
},
{
.name = "no_tls1_3",
.desc = "Just disable TLSv1.3",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.off,
.value = SSL_OP_NO_TLSv1_3,
},
{
.name = "no_tmp_rsa",
.type = OPTION_DISCARD,
},
{
.name = "nocert",
.desc = "Don't use any certificates (Anon-DH)",
.type = OPTION_FLAG,
.opt.flag = &cfg.nocert,
},
{
.name = "pass",
.argname = "arg",
.desc = "Private key file pass phrase source",
.type = OPTION_ARG,
.opt.arg = &cfg.passarg,
},
{
.name = "port",
.argname = "port",
.type = OPTION_ARG_FUNC,
.opt.argfunc = s_server_opt_port,
},
{
.name = "quiet",
.desc = "Inhibit printing of session and certificate information",
.type = OPTION_FLAG,
.opt.flag = &cfg.quiet,
},
{
.name = "servername",
.argname = "name",
.desc = "Servername for HostName TLS extension",
.type = OPTION_ARG,
.opt.arg = &cfg.tlsextcbp.servername,
},
{
.name = "servername_fatal",
.desc = "On mismatch send fatal alert (default warning alert)",
.type = OPTION_VALUE,
.opt.value = &cfg.tlsextcbp.extension_error,
.value = SSL_TLSEXT_ERR_ALERT_FATAL,
},
{
.name = "serverpref",
.desc = "Use server's cipher preferences",
.type = OPTION_VALUE_OR,
.opt.value = &cfg.off,
.value = SSL_OP_CIPHER_SERVER_PREFERENCE,
},
{
.name = "state",
.desc = "Print the SSL states",
.type = OPTION_FLAG,
.opt.flag = &cfg.state,
},
{
.name = "status",
.desc = "Respond to certificate status requests",
.type = OPTION_FLAG,
.opt.flag = &cfg.tlsextstatus,
},
{
.name = "status_timeout",
.argname = "nsec",
.desc = "Status request responder timeout",
.type = OPTION_ARG_FUNC,
.opt.argfunc = s_server_opt_status_timeout,
},
{
.name = "status_url",
.argname = "url",
.desc = "Status request fallback URL",
.type = OPTION_ARG_FUNC,
.opt.argfunc = s_server_opt_status_url,
},
{
.name = "status_verbose",
.desc = "Enable status request verbose printout",
.type = OPTION_FUNC,
.opt.func = s_server_opt_status_verbose,
},
#ifndef OPENSSL_NO_DTLS
{
.name = "timeout",
.desc = "Enable timeouts",
.type = OPTION_FLAG,
.opt.flag = &cfg.enable_timeouts,
},
#endif
{
.name = "tls1_2",
.desc = "Just talk TLSv1.2",
.type = OPTION_FUNC,
.opt.func = s_server_opt_protocol_version_tls1_2,
},
{
.name = "tls1_3",
.desc = "Just talk TLSv1.3",
.type = OPTION_FUNC,
.opt.func = s_server_opt_protocol_version_tls1_3,
},
{
.name = "tlsextdebug",
.desc = "Hex dump of all TLS extensions received",
.type = OPTION_FLAG,
.opt.flag = &cfg.tlsextdebug,
},
#ifndef OPENSSL_NO_SRTP
{
.name = "use_srtp",
.argname = "profiles",
.desc = "Offer SRTP key management with a colon-separated profile list",
.type = OPTION_ARG,
.opt.arg = &cfg.srtp_profiles,
},
#endif
{
.name = "Verify",
.argname = "depth",
.desc = "Turn on peer certificate verification, must have a cert",
.type = OPTION_ARG_FUNC,
.opt.argfunc = s_server_opt_verify_fail,
},
{
.name = "verify",
.argname = "depth",
.desc = "Turn on peer certificate verification",
.type = OPTION_ARG_FUNC,
.opt.argfunc = s_server_opt_verify,
},
{
.name = "verify_return_error",
.desc = "Return verification error",
.type = OPTION_FLAG,
.opt.flag = &verify_return_error,
},
{
.name = "WWW",
.desc = "Respond to a 'GET /<path> HTTP/1.0' with file ./<path>",
.type = OPTION_VALUE,
.opt.value = &cfg.www,
.value = 2,
},
{
.name = "www",
.desc = "Respond to a 'GET /' with a status page",
.type = OPTION_VALUE,
.opt.value = &cfg.www,
.value = 1,
},
{
.name = NULL,
.desc = "",
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = s_server_opt_verify_param,
},
{ NULL },
};
static void
s_server_init(void)
{
accept_socket = -1;
cfg.cipher = NULL;
cfg.server_verify = SSL_VERIFY_NONE;
cfg.dcert_file = NULL;
cfg.dkey_file = NULL;
cfg.cert_file = TEST_CERT;
cfg.key_file = NULL;
cfg.cert_file2 = TEST_CERT2;
cfg.key_file2 = NULL;
ctx2 = NULL;
cfg.nbio = 0;
cfg.nbio_test = 0;
ctx = NULL;
cfg.www = 0;
bio_s_out = NULL;
cfg.debug = 0;
cfg.msg = 0;
cfg.quiet = 0;
}
static void
sv_usage(void)
{
fprintf(stderr, "usage: s_server "
"[-accept port] [-alpn protocols] [-bugs] [-CAfile file]\n"
" [-CApath directory] [-cert file] [-cert2 file]\n"
" [-certform der | pem] [-cipher cipherlist]\n"
" [-context id] [-crl_check] [-crl_check_all] [-crlf]\n"
" [-dcert file] [-dcertform der | pem] [-debug]\n"
" [-dhparam file] [-dkey file] [-dkeyform der | pem]\n"
" [-dpass arg] [-dtls] [-dtls1_2] [-groups list] [-HTTP]\n"
" [-id_prefix arg] [-key keyfile] [-key2 keyfile]\n"
" [-keyform der | pem] [-keymatexport label]\n"
" [-keymatexportlen len] [-msg] [-mtu mtu] [-naccept num]\n"
" [-named_curve arg] [-nbio] [-nbio_test] [-no_cache]\n"
" [-no_dhe] [-no_ecdhe] [-no_ticket] \n"
" [-no_tls1_2] [-no_tls1_3] [-no_tmp_rsa]\n"
" [-nocert] [-pass arg] [-quiet] [-servername name]\n"
" [-servername_fatal] [-serverpref] [-state] [-status]\n"
" [-status_timeout nsec] [-status_url url]\n"
" [-status_verbose] [-timeout] \n"
" [-tls1_2] [-tls1_3] [-tlsextdebug] [-use_srtp profiles]\n"
" [-Verify depth] [-verify depth] [-verify_return_error]\n"
" [-WWW] [-www]\n");
fprintf(stderr, "\n");
options_usage(s_server_options);
fprintf(stderr, "\n");
}
int
s_server_main(int argc, char *argv[])
{
int ret = 1;
char *pass = NULL;
char *dpass = NULL;
X509 *s_cert = NULL, *s_dcert = NULL;
EVP_PKEY *s_key = NULL, *s_dkey = NULL;
EVP_PKEY *s_key2 = NULL;
X509 *s_cert2 = NULL;
tlsextalpnctx alpn_ctx = { NULL, 0 };
if (pledge("stdio rpath inet dns tty", NULL) == -1) {
perror("pledge");
exit(1);
}
memset(&cfg, 0, sizeof(cfg));
cfg.keymatexportlen = 20;
cfg.meth = TLS_server_method();
cfg.naccept = -1;
cfg.port = PORT;
cfg.cert_file = TEST_CERT;
cfg.cert_file2 = TEST_CERT2;
cfg.cert_format = FORMAT_PEM;
cfg.dcert_format = FORMAT_PEM;
cfg.dkey_format = FORMAT_PEM;
cfg.key_format = FORMAT_PEM;
cfg.server_verify = SSL_VERIFY_NONE;
cfg.socket_type = SOCK_STREAM;
cfg.tlscstatp.timeout = -1;
cfg.tlsextcbp.extension_error =
SSL_TLSEXT_ERR_ALERT_WARNING;
local_argc = argc;
local_argv = argv;
s_server_init();
verify_depth = 0;
if (options_parse(argc, argv, s_server_options, NULL, NULL) != 0) {
if (cfg.errstr == NULL)
sv_usage();
goto end;
}
if (!app_passwd(bio_err, cfg.passarg,
cfg.dpassarg, &pass, &dpass)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
if (cfg.key_file == NULL)
cfg.key_file = cfg.cert_file;
if (cfg.key_file2 == NULL)
cfg.key_file2 = cfg.cert_file2;
if (cfg.nocert == 0) {
s_key = load_key(bio_err, cfg.key_file,
cfg.key_format, 0, pass,
"server certificate private key file");
if (!s_key) {
ERR_print_errors(bio_err);
goto end;
}
s_cert = load_cert(bio_err, cfg.cert_file,
cfg.cert_format,
NULL, "server certificate file");
if (!s_cert) {
ERR_print_errors(bio_err);
goto end;
}
if (cfg.tlsextcbp.servername) {
s_key2 = load_key(bio_err, cfg.key_file2,
cfg.key_format, 0, pass,
"second server certificate private key file");
if (!s_key2) {
ERR_print_errors(bio_err);
goto end;
}
s_cert2 = load_cert(bio_err, cfg.cert_file2,
cfg.cert_format,
NULL, "second server certificate file");
if (!s_cert2) {
ERR_print_errors(bio_err);
goto end;
}
}
}
alpn_ctx.data = NULL;
if (cfg.alpn_in) {
unsigned short len;
alpn_ctx.data = next_protos_parse(&len,
cfg.alpn_in);
if (alpn_ctx.data == NULL)
goto end;
alpn_ctx.len = len;
}
if (cfg.dcert_file) {
if (cfg.dkey_file == NULL)
cfg.dkey_file = cfg.dcert_file;
s_dkey = load_key(bio_err, cfg.dkey_file,
cfg.dkey_format,
0, dpass, "second certificate private key file");
if (!s_dkey) {
ERR_print_errors(bio_err);
goto end;
}
s_dcert = load_cert(bio_err, cfg.dcert_file,
cfg.dcert_format,
NULL, "second server certificate file");
if (!s_dcert) {
ERR_print_errors(bio_err);
goto end;
}
}
if (bio_s_out == NULL) {
if (cfg.quiet && !cfg.debug &&
!cfg.msg) {
bio_s_out = BIO_new(BIO_s_null());
} else {
if (bio_s_out == NULL)
bio_s_out = BIO_new_fp(stdout, BIO_NOCLOSE);
}
}
if (cfg.nocert) {
cfg.cert_file = NULL;
cfg.key_file = NULL;
cfg.dcert_file = NULL;
cfg.dkey_file = NULL;
cfg.cert_file2 = NULL;
cfg.key_file2 = NULL;
}
ctx = SSL_CTX_new(cfg.meth);
if (ctx == NULL) {
ERR_print_errors(bio_err);
goto end;
}
SSL_CTX_clear_mode(ctx, SSL_MODE_AUTO_RETRY);
if (!SSL_CTX_set_min_proto_version(ctx, cfg.min_version))
goto end;
if (!SSL_CTX_set_max_proto_version(ctx, cfg.max_version))
goto end;
if (cfg.session_id_prefix) {
if (strlen(cfg.session_id_prefix) >= 32)
BIO_printf(bio_err,
"warning: id_prefix is too long, only one new session will be possible\n");
else if (strlen(cfg.session_id_prefix) >= 16)
BIO_printf(bio_err,
"warning: id_prefix is too long if you use SSLv2\n");
if (!SSL_CTX_set_generate_session_id(ctx, generate_session_id)) {
BIO_printf(bio_err, "error setting 'id_prefix'\n");
ERR_print_errors(bio_err);
goto end;
}
BIO_printf(bio_err, "id_prefix '%s' set.\n",
cfg.session_id_prefix);
}
SSL_CTX_set_quiet_shutdown(ctx, 1);
if (cfg.bugs)
SSL_CTX_set_options(ctx, SSL_OP_ALL);
SSL_CTX_set_options(ctx, cfg.off);
if (cfg.state)
SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback);
if (cfg.no_cache)
SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
else
SSL_CTX_sess_set_cache_size(ctx, 128);
#ifndef OPENSSL_NO_SRTP
if (cfg.srtp_profiles != NULL)
SSL_CTX_set_tlsext_use_srtp(ctx, cfg.srtp_profiles);
#endif
if ((!SSL_CTX_load_verify_locations(ctx, cfg.CAfile,
cfg.CApath)) ||
(!SSL_CTX_set_default_verify_paths(ctx))) {
/* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
ERR_print_errors(bio_err);
/* goto end; */
}
if (cfg.vpm)
SSL_CTX_set1_param(ctx, cfg.vpm);
if (s_cert2) {
ctx2 = SSL_CTX_new(cfg.meth);
if (ctx2 == NULL) {
ERR_print_errors(bio_err);
goto end;
}
if (!SSL_CTX_set_min_proto_version(ctx2,
cfg.min_version))
goto end;
if (!SSL_CTX_set_max_proto_version(ctx2,
cfg.max_version))
goto end;
SSL_CTX_clear_mode(ctx2, SSL_MODE_AUTO_RETRY);
}
if (ctx2) {
BIO_printf(bio_s_out, "Setting secondary ctx parameters\n");
if (cfg.session_id_prefix) {
if (strlen(cfg.session_id_prefix) >= 32)
BIO_printf(bio_err,
"warning: id_prefix is too long, only one new session will be possible\n");
else if (strlen(cfg.session_id_prefix) >= 16)
BIO_printf(bio_err,
"warning: id_prefix is too long if you use SSLv2\n");
if (!SSL_CTX_set_generate_session_id(ctx2,
generate_session_id)) {
BIO_printf(bio_err,
"error setting 'id_prefix'\n");
ERR_print_errors(bio_err);
goto end;
}
BIO_printf(bio_err, "id_prefix '%s' set.\n",
cfg.session_id_prefix);
}
SSL_CTX_set_quiet_shutdown(ctx2, 1);
if (cfg.bugs)
SSL_CTX_set_options(ctx2, SSL_OP_ALL);
SSL_CTX_set_options(ctx2, cfg.off);
if (cfg.state)
SSL_CTX_set_info_callback(ctx2, apps_ssl_info_callback);
if (cfg.no_cache)
SSL_CTX_set_session_cache_mode(ctx2, SSL_SESS_CACHE_OFF);
else
SSL_CTX_sess_set_cache_size(ctx2, 128);
if ((!SSL_CTX_load_verify_locations(ctx2,
cfg.CAfile, cfg.CApath)) ||
(!SSL_CTX_set_default_verify_paths(ctx2))) {
ERR_print_errors(bio_err);
}
if (cfg.vpm)
SSL_CTX_set1_param(ctx2, cfg.vpm);
}
if (alpn_ctx.data)
SSL_CTX_set_alpn_select_cb(ctx, alpn_cb, &alpn_ctx);
if (cfg.groups_in != NULL) {
if (SSL_CTX_set1_groups_list(ctx, cfg.groups_in) != 1) {
BIO_printf(bio_err, "Failed to set groups '%s'\n",
cfg.groups_in);
goto end;
}
}
#ifndef OPENSSL_NO_DH
if (!cfg.no_dhe) {
DH *dh = NULL;
if (cfg.dhfile)
dh = load_dh_param(cfg.dhfile);
else if (cfg.cert_file)
dh = load_dh_param(cfg.cert_file);
if (dh != NULL)
BIO_printf(bio_s_out, "Setting temp DH parameters\n");
else
BIO_printf(bio_s_out, "Using auto DH parameters\n");
(void) BIO_flush(bio_s_out);
if (dh == NULL)
SSL_CTX_set_dh_auto(ctx, 1);
else if (!SSL_CTX_set_tmp_dh(ctx, dh)) {
BIO_printf(bio_err,
"Error setting temp DH parameters\n");
ERR_print_errors(bio_err);
DH_free(dh);
goto end;
}
if (ctx2) {
if (!cfg.dhfile) {
DH *dh2 = NULL;
if (cfg.cert_file2 != NULL)
dh2 = load_dh_param(
cfg.cert_file2);
if (dh2 != NULL) {
BIO_printf(bio_s_out,
"Setting temp DH parameters\n");
(void) BIO_flush(bio_s_out);
DH_free(dh);
dh = dh2;
}
}
if (dh == NULL)
SSL_CTX_set_dh_auto(ctx2, 1);
else if (!SSL_CTX_set_tmp_dh(ctx2, dh)) {
BIO_printf(bio_err,
"Error setting temp DH parameters\n");
ERR_print_errors(bio_err);
DH_free(dh);
goto end;
}
}
DH_free(dh);
}
#endif
if (!cfg.no_ecdhe && cfg.named_curve != NULL) {
EC_KEY *ecdh = NULL;
int nid;
if ((nid = OBJ_sn2nid(cfg.named_curve)) == 0) {
BIO_printf(bio_err, "unknown curve name (%s)\n",
cfg.named_curve);
goto end;
}
if ((ecdh = EC_KEY_new_by_curve_name(nid)) == NULL) {
BIO_printf(bio_err, "unable to create curve (%s)\n",
cfg.named_curve);
goto end;
}
BIO_printf(bio_s_out, "Setting temp ECDH parameters\n");
(void) BIO_flush(bio_s_out);
SSL_CTX_set_tmp_ecdh(ctx, ecdh);
if (ctx2)
SSL_CTX_set_tmp_ecdh(ctx2, ecdh);
EC_KEY_free(ecdh);
}
if (!set_cert_key_stuff(ctx, s_cert, s_key))
goto end;
if (ctx2 && !set_cert_key_stuff(ctx2, s_cert2, s_key2))
goto end;
if (s_dcert != NULL) {
if (!set_cert_key_stuff(ctx, s_dcert, s_dkey))
goto end;
}
if (cfg.cipher != NULL) {
if (!SSL_CTX_set_cipher_list(ctx, cfg.cipher)) {
BIO_printf(bio_err, "error setting cipher list\n");
ERR_print_errors(bio_err);
goto end;
}
if (ctx2 && !SSL_CTX_set_cipher_list(ctx2,
cfg.cipher)) {
BIO_printf(bio_err, "error setting cipher list\n");
ERR_print_errors(bio_err);
goto end;
}
}
SSL_CTX_set_verify(ctx, cfg.server_verify, verify_callback);
SSL_CTX_set_session_id_context(ctx,
(void *) &s_server_session_id_context,
sizeof s_server_session_id_context);
/* Set DTLS cookie generation and verification callbacks */
SSL_CTX_set_cookie_generate_cb(ctx, generate_cookie_callback);
SSL_CTX_set_cookie_verify_cb(ctx, verify_cookie_callback);
if (ctx2) {
SSL_CTX_set_verify(ctx2, cfg.server_verify,
verify_callback);
SSL_CTX_set_session_id_context(ctx2,
(void *) &s_server_session_id_context,
sizeof s_server_session_id_context);
cfg.tlsextcbp.biodebug = bio_s_out;
SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
SSL_CTX_set_tlsext_servername_arg(ctx2,
&cfg.tlsextcbp);
SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
SSL_CTX_set_tlsext_servername_arg(ctx,
&cfg.tlsextcbp);
}
if (cfg.CAfile != NULL) {
SSL_CTX_set_client_CA_list(ctx,
SSL_load_client_CA_file(cfg.CAfile));
if (ctx2)
SSL_CTX_set_client_CA_list(ctx2,
SSL_load_client_CA_file(cfg.CAfile));
}
BIO_printf(bio_s_out, "ACCEPT\n");
(void) BIO_flush(bio_s_out);
if (cfg.www)
do_server(cfg.port, cfg.socket_type,
&accept_socket, www_body, cfg.context,
cfg.naccept);
else
do_server(cfg.port, cfg.socket_type,
&accept_socket, sv_body, cfg.context,
cfg.naccept);
print_stats(bio_s_out, ctx);
ret = 0;
end:
SSL_CTX_free(ctx);
X509_free(s_cert);
X509_free(s_dcert);
EVP_PKEY_free(s_key);
EVP_PKEY_free(s_dkey);
free(pass);
free(dpass);
X509_VERIFY_PARAM_free(cfg.vpm);
free(cfg.tlscstatp.host);
free(cfg.tlscstatp.port);
free(cfg.tlscstatp.path);
SSL_CTX_free(ctx2);
X509_free(s_cert2);
EVP_PKEY_free(s_key2);
free(alpn_ctx.data);
if (bio_s_out != NULL) {
BIO_free(bio_s_out);
bio_s_out = NULL;
}
return (ret);
}
static void
print_stats(BIO *bio, SSL_CTX *ssl_ctx)
{
BIO_printf(bio, "%4ld items in the session cache\n",
SSL_CTX_sess_number(ssl_ctx));
BIO_printf(bio, "%4ld client connects (SSL_connect())\n",
SSL_CTX_sess_connect(ssl_ctx));
BIO_printf(bio, "%4ld client renegotiates (SSL_connect())\n",
SSL_CTX_sess_connect_renegotiate(ssl_ctx));
BIO_printf(bio, "%4ld client connects that finished\n",
SSL_CTX_sess_connect_good(ssl_ctx));
BIO_printf(bio, "%4ld server accepts (SSL_accept())\n",
SSL_CTX_sess_accept(ssl_ctx));
BIO_printf(bio, "%4ld server renegotiates (SSL_accept())\n",
SSL_CTX_sess_accept_renegotiate(ssl_ctx));
BIO_printf(bio, "%4ld server accepts that finished\n",
SSL_CTX_sess_accept_good(ssl_ctx));
BIO_printf(bio, "%4ld session cache hits\n",
SSL_CTX_sess_hits(ssl_ctx));
BIO_printf(bio, "%4ld session cache misses\n",
SSL_CTX_sess_misses(ssl_ctx));
BIO_printf(bio, "%4ld session cache timeouts\n",
SSL_CTX_sess_timeouts(ssl_ctx));
BIO_printf(bio, "%4ld callback cache hits\n",
SSL_CTX_sess_cb_hits(ssl_ctx));
BIO_printf(bio, "%4ld cache full overflows (%ld allowed)\n",
SSL_CTX_sess_cache_full(ssl_ctx),
SSL_CTX_sess_get_cache_size(ssl_ctx));
}
static int
sv_body(int s, unsigned char *context)
{
char *buf = NULL;
int ret = 1;
int k, i;
unsigned long l;
SSL *con = NULL;
BIO *sbio;
struct timeval timeout;
if ((buf = malloc(bufsize)) == NULL) {
BIO_printf(bio_err, "out of memory\n");
goto err;
}
if (cfg.nbio) {
if (!cfg.quiet)
BIO_printf(bio_err, "turning on non blocking io\n");
if (!BIO_socket_nbio(s, 1))
ERR_print_errors(bio_err);
}
if (con == NULL) {
con = SSL_new(ctx);
if (cfg.tlsextdebug) {
SSL_set_tlsext_debug_callback(con, tlsext_cb);
SSL_set_tlsext_debug_arg(con, bio_s_out);
}
if (cfg.tlsextstatus) {
SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb);
cfg.tlscstatp.err = bio_err;
SSL_CTX_set_tlsext_status_arg(ctx,
&cfg.tlscstatp);
}
if (context)
SSL_set_session_id_context(con, context,
strlen((char *) context));
}
SSL_clear(con);
if (SSL_is_dtls(con)) {
sbio = BIO_new_dgram(s, BIO_NOCLOSE);
if (cfg.enable_timeouts) {
timeout.tv_sec = 0;
timeout.tv_usec = DGRAM_RCV_TIMEOUT;
BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0,
&timeout);
timeout.tv_sec = 0;
timeout.tv_usec = DGRAM_SND_TIMEOUT;
BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0,
&timeout);
}
if (cfg.socket_mtu > 28) {
SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
SSL_set_mtu(con, cfg.socket_mtu - 28);
} else
/* want to do MTU discovery */
BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
/* turn on cookie exchange */
SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);
} else
sbio = BIO_new_socket(s, BIO_NOCLOSE);
if (cfg.nbio_test) {
BIO *test;
test = BIO_new(BIO_f_nbio_test());
sbio = BIO_push(test, sbio);
}
SSL_set_bio(con, sbio, sbio);
SSL_set_accept_state(con);
/* SSL_set_fd(con,s); */
if (cfg.debug) {
BIO_set_callback(SSL_get_rbio(con), bio_dump_callback);
BIO_set_callback_arg(SSL_get_rbio(con), (char *) bio_s_out);
}
if (cfg.msg) {
SSL_set_msg_callback(con, msg_cb);
SSL_set_msg_callback_arg(con, bio_s_out);
}
if (cfg.tlsextdebug) {
SSL_set_tlsext_debug_callback(con, tlsext_cb);
SSL_set_tlsext_debug_arg(con, bio_s_out);
}
for (;;) {
int read_from_terminal;
int read_from_sslcon;
struct pollfd pfd[2];
int ptimeout;
read_from_terminal = 0;
read_from_sslcon = SSL_pending(con);
if (!read_from_sslcon) {
pfd[0].fd = fileno(stdin);
pfd[0].events = POLLIN;
pfd[1].fd = s;
pfd[1].events = POLLIN;
if (SSL_is_dtls(con) &&
DTLSv1_get_timeout(con, &timeout))
ptimeout = timeout.tv_sec * 1000 +
timeout.tv_usec / 1000;
else
ptimeout = -1;
i = poll(pfd, 2, ptimeout);
if (SSL_is_dtls(con) &&
DTLSv1_handle_timeout(con) > 0)
BIO_printf(bio_err, "TIMEOUT occured\n");
if (i <= 0)
continue;
if (pfd[0].revents) {
if ((pfd[0].revents & (POLLERR|POLLNVAL)))
continue;
read_from_terminal = 1;
}
if (pfd[1].revents) {
if ((pfd[1].revents & (POLLERR|POLLNVAL)))
continue;
read_from_sslcon = 1;
}
}
if (read_from_terminal) {
if (cfg.crlf) {
int j, lf_num;
i = read(fileno(stdin), buf, bufsize / 2);
lf_num = 0;
/* both loops are skipped when i <= 0 */
for (j = 0; j < i; j++)
if (buf[j] == '\n')
lf_num++;
for (j = i - 1; j >= 0; j--) {
buf[j + lf_num] = buf[j];
if (buf[j] == '\n') {
lf_num--;
i++;
buf[j + lf_num] = '\r';
}
}
assert(lf_num == 0);
} else
i = read(fileno(stdin), buf, bufsize);
if (!cfg.quiet) {
if ((i <= 0) || (buf[0] == 'Q')) {
BIO_printf(bio_s_out, "DONE\n");
shutdown(s, SHUT_RD);
close(s);
close_accept_socket();
ret = -11;
goto err;
}
if ((i <= 0) || (buf[0] == 'q')) {
BIO_printf(bio_s_out, "DONE\n");
if (!SSL_is_dtls(con)) {
shutdown(s, SHUT_RD);
close(s);
}
/*
* close_accept_socket(); ret= -11;
*/
goto err;
}
if ((buf[0] == 'r') &&
((buf[1] == '\n') || (buf[1] == '\r'))) {
SSL_renegotiate(con);
i = SSL_do_handshake(con);
printf("SSL_do_handshake -> %d\n", i);
i = 0; /* 13; */
continue;
/*
* RE-NEGOTIATE\n");
*/
}
if ((buf[0] == 'R') &&
((buf[1] == '\n') || (buf[1] == '\r'))) {
SSL_set_verify(con,
SSL_VERIFY_PEER |
SSL_VERIFY_CLIENT_ONCE,
NULL);
SSL_renegotiate(con);
i = SSL_do_handshake(con);
printf("SSL_do_handshake -> %d\n", i);
i = 0; /* 13; */
continue;
/*
* RE-NEGOTIATE asking for client
* cert\n");
*/
}
if (buf[0] == 'P') {
static const char *str =
"Lets print some clear text\n";
BIO_write(SSL_get_wbio(con), str,
strlen(str));
}
if (buf[0] == 'S') {
print_stats(bio_s_out,
SSL_get_SSL_CTX(con));
}
}
l = k = 0;
for (;;) {
/* should do a select for the write */
#ifdef RENEG
{
static count = 0;
if (++count == 100) {
count = 0;
SSL_renegotiate(con);
}
}
#endif
k = SSL_write(con, &(buf[l]), (unsigned int) i);
switch (SSL_get_error(con, k)) {
case SSL_ERROR_NONE:
break;
case SSL_ERROR_WANT_WRITE:
case SSL_ERROR_WANT_READ:
case SSL_ERROR_WANT_X509_LOOKUP:
BIO_printf(bio_s_out, "Write BLOCK\n");
break;
case SSL_ERROR_SYSCALL:
case SSL_ERROR_SSL:
BIO_printf(bio_s_out, "ERROR\n");
ERR_print_errors(bio_err);
ret = 1;
goto err;
/* break; */
case SSL_ERROR_ZERO_RETURN:
BIO_printf(bio_s_out, "DONE\n");
ret = 1;
goto err;
}
if (k <= 0)
continue;
l += k;
i -= k;
if (i <= 0)
break;
}
}
if (read_from_sslcon) {
if (!SSL_is_init_finished(con)) {
i = init_ssl_connection(con);
if (i < 0) {
ret = 0;
goto err;
} else if (i == 0) {
ret = 1;
goto err;
}
} else {
again:
i = SSL_read(con, (char *) buf, bufsize);
switch (SSL_get_error(con, i)) {
case SSL_ERROR_NONE: {
int len, n;
for (len = 0; len < i;) {
do {
n = write(fileno(stdout), buf + len, i - len);
} while (n == -1 && errno == EINTR);
if (n == -1) {
BIO_printf(bio_s_out, "ERROR\n");
goto err;
}
len += n;
}
}
if (SSL_pending(con))
goto again;
break;
case SSL_ERROR_WANT_WRITE:
case SSL_ERROR_WANT_READ:
BIO_printf(bio_s_out, "Read BLOCK\n");
break;
case SSL_ERROR_SYSCALL:
case SSL_ERROR_SSL:
BIO_printf(bio_s_out, "ERROR\n");
ERR_print_errors(bio_err);
ret = 1;
goto err;
case SSL_ERROR_ZERO_RETURN:
BIO_printf(bio_s_out, "DONE\n");
ret = 1;
goto err;
}
}
}
}
err:
if (con != NULL) {
BIO_printf(bio_s_out, "shutting down SSL\n");
SSL_set_shutdown(con,
SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);
SSL_free(con);
}
BIO_printf(bio_s_out, "CONNECTION CLOSED\n");
freezero(buf, bufsize);
if (ret >= 0)
BIO_printf(bio_s_out, "ACCEPT\n");
return (ret);
}
static void
close_accept_socket(void)
{
BIO_printf(bio_err, "shutdown accept socket\n");
if (accept_socket >= 0) {
shutdown(accept_socket, SHUT_RDWR);
close(accept_socket);
}
}
static int
init_ssl_connection(SSL *con)
{
int i;
const char *str;
X509 *peer;
long verify_error;
char buf[BUFSIZ];
unsigned char *exportedkeymat;
i = SSL_accept(con);
if (i <= 0) {
if (BIO_sock_should_retry(i)) {
BIO_printf(bio_s_out, "DELAY\n");
return (1);
}
BIO_printf(bio_err, "ERROR\n");
verify_error = SSL_get_verify_result(con);
if (verify_error != X509_V_OK) {
BIO_printf(bio_err, "verify error:%s\n",
X509_verify_cert_error_string(verify_error));
} else
ERR_print_errors(bio_err);
return (0);
}
PEM_write_bio_SSL_SESSION(bio_s_out, SSL_get_session(con));
peer = SSL_get_peer_certificate(con);
if (peer != NULL) {
BIO_printf(bio_s_out, "Client certificate\n");
PEM_write_bio_X509(bio_s_out, peer);
X509_NAME_oneline(X509_get_subject_name(peer), buf, sizeof buf);
BIO_printf(bio_s_out, "subject=%s\n", buf);
X509_NAME_oneline(X509_get_issuer_name(peer), buf, sizeof buf);
BIO_printf(bio_s_out, "issuer=%s\n", buf);
X509_free(peer);
}
if (SSL_get_shared_ciphers(con, buf, sizeof buf) != NULL)
BIO_printf(bio_s_out, "Shared ciphers:%s\n", buf);
str = SSL_CIPHER_get_name(SSL_get_current_cipher(con));
BIO_printf(bio_s_out, "CIPHER is %s\n", (str != NULL) ? str : "(NONE)");
#ifndef OPENSSL_NO_SRTP
{
SRTP_PROTECTION_PROFILE *srtp_profile
= SSL_get_selected_srtp_profile(con);
if (srtp_profile)
BIO_printf(bio_s_out,
"SRTP Extension negotiated, profile=%s\n",
srtp_profile->name);
}
#endif
if (SSL_cache_hit(con))
BIO_printf(bio_s_out, "Reused session-id\n");
BIO_printf(bio_s_out, "Secure Renegotiation IS%s supported\n",
SSL_get_secure_renegotiation_support(con) ? "" : " NOT");
if (cfg.keymatexportlabel != NULL) {
BIO_printf(bio_s_out, "Keying material exporter:\n");
BIO_printf(bio_s_out, " Label: '%s'\n",
cfg.keymatexportlabel);
BIO_printf(bio_s_out, " Length: %i bytes\n",
cfg.keymatexportlen);
exportedkeymat = malloc(cfg.keymatexportlen);
if (exportedkeymat != NULL) {
if (!SSL_export_keying_material(con, exportedkeymat,
cfg.keymatexportlen,
cfg.keymatexportlabel,
strlen(cfg.keymatexportlabel),
NULL, 0, 0)) {
BIO_printf(bio_s_out, " Error\n");
} else {
BIO_printf(bio_s_out, " Keying material: ");
for (i = 0; i < cfg.keymatexportlen; i++)
BIO_printf(bio_s_out, "%02X",
exportedkeymat[i]);
BIO_printf(bio_s_out, "\n");
}
free(exportedkeymat);
}
}
return (1);
}
#ifndef OPENSSL_NO_DH
static DH *
load_dh_param(const char *dhfile)
{
DH *ret = NULL;
BIO *bio;
if ((bio = BIO_new_file(dhfile, "r")) == NULL)
goto err;
ret = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
err:
BIO_free(bio);
return (ret);
}
#endif
static int
www_body(int s, unsigned char *context)
{
char *buf = NULL;
int ret = 1;
int i, j, k, dot;
SSL *con;
const SSL_CIPHER *c;
BIO *io, *ssl_bio, *sbio;
buf = malloc(bufsize);
if (buf == NULL)
return (0);
io = BIO_new(BIO_f_buffer());
ssl_bio = BIO_new(BIO_f_ssl());
if ((io == NULL) || (ssl_bio == NULL))
goto err;
if (cfg.nbio) {
if (!cfg.quiet)
BIO_printf(bio_err, "turning on non blocking io\n");
if (!BIO_socket_nbio(s, 1))
ERR_print_errors(bio_err);
}
/* lets make the output buffer a reasonable size */
if (!BIO_set_write_buffer_size(io, bufsize))
goto err;
if ((con = SSL_new(ctx)) == NULL)
goto err;
if (cfg.tlsextdebug) {
SSL_set_tlsext_debug_callback(con, tlsext_cb);
SSL_set_tlsext_debug_arg(con, bio_s_out);
}
if (context)
SSL_set_session_id_context(con, context,
strlen((char *) context));
sbio = BIO_new_socket(s, BIO_NOCLOSE);
if (cfg.nbio_test) {
BIO *test;
test = BIO_new(BIO_f_nbio_test());
sbio = BIO_push(test, sbio);
}
SSL_set_bio(con, sbio, sbio);
SSL_set_accept_state(con);
/* SSL_set_fd(con,s); */
BIO_set_ssl(ssl_bio, con, BIO_CLOSE);
BIO_push(io, ssl_bio);
if (cfg.debug) {
BIO_set_callback(SSL_get_rbio(con), bio_dump_callback);
BIO_set_callback_arg(SSL_get_rbio(con), (char *) bio_s_out);
}
if (cfg.msg) {
SSL_set_msg_callback(con, msg_cb);
SSL_set_msg_callback_arg(con, bio_s_out);
}
for (;;) {
i = BIO_gets(io, buf, bufsize - 1);
if (i < 0) { /* error */
if (!BIO_should_retry(io)) {
if (!cfg.quiet)
ERR_print_errors(bio_err);
goto err;
} else {
if (cfg.debug) {
BIO_printf(bio_s_out, "read R BLOCK\n");
sleep(1);
}
continue;
}
} else if (i == 0) { /* end of input */
ret = 1;
goto end;
}
/* else we have data */
if (((cfg.www == 1) &&
(strncmp("GET ", buf, 4) == 0)) ||
((cfg.www == 2) &&
(strncmp("GET /stats ", buf, 11) == 0))) {
char *p;
X509 *peer;
STACK_OF(SSL_CIPHER) *sk;
static const char *space = " ";
BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
BIO_puts(io, "<HTML><BODY BGCOLOR=\"#ffffff\">\n");
BIO_puts(io, "<pre>\n");
/* BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
BIO_puts(io, "\n");
for (i = 0; i < local_argc; i++) {
BIO_puts(io, local_argv[i]);
BIO_write(io, " ", 1);
}
BIO_puts(io, "\n");
BIO_printf(io,
"Secure Renegotiation IS%s supported\n",
SSL_get_secure_renegotiation_support(con) ?
"" : " NOT");
/*
* The following is evil and should not really be
* done
*/
BIO_printf(io,
"Ciphers supported in s_server binary\n");
sk = SSL_get_ciphers(con);
j = sk_SSL_CIPHER_num(sk);
for (i = 0; i < j; i++) {
c = sk_SSL_CIPHER_value(sk, i);
BIO_printf(io, "%-11s:%-25s",
SSL_CIPHER_get_version(c),
SSL_CIPHER_get_name(c));
if ((((i + 1) % 2) == 0) && (i + 1 != j))
BIO_puts(io, "\n");
}
BIO_puts(io, "\n");
p = SSL_get_shared_ciphers(con, buf, bufsize);
if (p != NULL) {
BIO_printf(io,
"---\nCiphers common between both SSL end points:\n");
j = i = 0;
while (*p) {
if (*p == ':') {
BIO_write(io, space, 26 - j);
i++;
j = 0;
BIO_write(io,
((i % 3) ? " " : "\n"), 1);
} else {
BIO_write(io, p, 1);
j++;
}
p++;
}
BIO_puts(io, "\n");
}
BIO_printf(io, (SSL_cache_hit(con)
? "---\nReused, "
: "---\nNew, "));
c = SSL_get_current_cipher(con);
BIO_printf(io, "%s, Cipher is %s\n",
SSL_CIPHER_get_version(c),
SSL_CIPHER_get_name(c));
SSL_SESSION_print(io, SSL_get_session(con));
BIO_printf(io, "---\n");
print_stats(io, SSL_get_SSL_CTX(con));
BIO_printf(io, "---\n");
peer = SSL_get_peer_certificate(con);
if (peer != NULL) {
BIO_printf(io, "Client certificate\n");
X509_print(io, peer);
PEM_write_bio_X509(io, peer);
} else
BIO_puts(io,
"no client certificate available\n");
BIO_puts(io, "</BODY></HTML>\r\n\r\n");
break;
} else if ((cfg.www == 2 ||
cfg.www == 3) &&
(strncmp("GET /", buf, 5) == 0)) {
BIO *file;
char *p, *e;
static const char *text = "HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
/* skip the '/' */
p = &(buf[5]);
dot = 1;
for (e = p; *e != '\0'; e++) {
if (e[0] == ' ')
break;
switch (dot) {
case 1:
dot = (e[0] == '.') ? 2 : 0;
break;
case 2:
dot = (e[0] == '.') ? 3 : 0;
break;
case 3:
dot = (e[0] == '/' || e[0] == '\\') ?
-1 : 0;
break;
}
if (dot == 0)
dot = (e[0] == '/' || e[0] == '\\') ?
1 : 0;
}
dot = (dot == 3) || (dot == -1); /* filename contains
* ".." component */
if (*e == '\0') {
BIO_puts(io, text);
BIO_printf(io,
"'%s' is an invalid file name\r\n", p);
break;
}
*e = '\0';
if (dot) {
BIO_puts(io, text);
BIO_printf(io,
"'%s' contains '..' reference\r\n", p);
break;
}
if (*p == '/') {
BIO_puts(io, text);
BIO_printf(io,
"'%s' is an invalid path\r\n", p);
break;
}
/* if a directory, do the index thang */
if (app_isdir(p) > 0) {
BIO_puts(io, text);
BIO_printf(io, "'%s' is a directory\r\n", p);
break;
}
if ((file = BIO_new_file(p, "r")) == NULL) {
BIO_puts(io, text);
BIO_printf(io, "Error opening '%s'\r\n", p);
ERR_print_errors(io);
break;
}
if (!cfg.quiet)
BIO_printf(bio_err, "FILE:%s\n", p);
if (cfg.www == 2) {
i = strlen(p);
if (((i > 5) && (strcmp(&(p[i - 5]), ".html") == 0)) ||
((i > 4) && (strcmp(&(p[i - 4]), ".php") == 0)) ||
((i > 4) && (strcmp(&(p[i - 4]), ".htm") == 0)))
BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
else
BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
}
/* send the file */
for (;;) {
i = BIO_read(file, buf, bufsize);
if (i <= 0)
break;
#ifdef RENEG
total_bytes += i;
fprintf(stderr, "%d\n", i);
if (total_bytes > 3 * 1024) {
total_bytes = 0;
fprintf(stderr, "RENEGOTIATE\n");
SSL_renegotiate(con);
}
#endif
for (j = 0; j < i;) {
#ifdef RENEG
{
static count = 0;
if (++count == 13) {
SSL_renegotiate(con);
}
}
#endif
k = BIO_write(io, &(buf[j]), i - j);
if (k <= 0) {
if (!BIO_should_retry(io))
goto write_error;
else {
BIO_printf(bio_s_out,
"rwrite W BLOCK\n");
}
} else {
j += k;
}
}
}
write_error:
BIO_free(file);
break;
}
}
for (;;) {
i = (int) BIO_flush(io);
if (i <= 0) {
if (!BIO_should_retry(io))
break;
} else
break;
}
end:
/* make sure we re-use sessions */
SSL_set_shutdown(con, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);
err:
if (ret >= 0)
BIO_printf(bio_s_out, "ACCEPT\n");
free(buf);
BIO_free_all(io);
/* if (ssl_bio != NULL) BIO_free(ssl_bio);*/
return (ret);
}
#define MAX_SESSION_ID_ATTEMPTS 10
static int
generate_session_id(const SSL *ssl, unsigned char *id, unsigned int *id_len)
{
unsigned int count = 0;
do {
arc4random_buf(id, *id_len);
/*
* Prefix the session_id with the required prefix. NB: If our
* prefix is too long, clip it - but there will be worse
* effects anyway, eg. the server could only possibly create
* 1 session ID (ie. the prefix!) so all future session
* negotiations will fail due to conflicts.
*/
memcpy(id, cfg.session_id_prefix,
(strlen(cfg.session_id_prefix) < *id_len) ?
strlen(cfg.session_id_prefix) : *id_len);
}
while (SSL_has_matching_session_id(ssl, id, *id_len) &&
(++count < MAX_SESSION_ID_ATTEMPTS));
if (count >= MAX_SESSION_ID_ATTEMPTS)
return 0;
return 1;
}
static int
ssl_servername_cb(SSL *s, int *ad, void *arg)
{
tlsextctx *p = (tlsextctx *) arg;
const char *servername = SSL_get_servername(s,
TLSEXT_NAMETYPE_host_name);
if (servername && p->biodebug)
BIO_printf(p->biodebug, "Hostname in TLS extension: \"%s\"\n",
servername);
if (!p->servername)
return SSL_TLSEXT_ERR_NOACK;
if (servername) {
if (strcmp(servername, p->servername))
return p->extension_error;
if (ctx2) {
BIO_printf(p->biodebug, "Switching server context.\n");
SSL_set_SSL_CTX(s, ctx2);
}
}
return SSL_TLSEXT_ERR_OK;
}
/* Certificate Status callback. This is called when a client includes a
* certificate status request extension.
*
* This is a simplified version. It examines certificates each time and
* makes one OCSP responder query for each request.
*
* A full version would store details such as the OCSP certificate IDs and
* minimise the number of OCSP responses by caching them until they were
* considered "expired".
*/
static int
cert_status_cb(SSL *s, void *arg)
{
tlsextstatusctx *srctx = arg;
BIO *err = srctx->err;
char *host = NULL, *port = NULL, *path = NULL;
int use_ssl;
unsigned char *rspder = NULL;
int rspderlen;
STACK_OF(OPENSSL_STRING) *aia = NULL;
X509 *x = NULL;
X509_STORE_CTX *inctx = NULL;
X509_OBJECT *obj = NULL;
OCSP_REQUEST *req = NULL;
OCSP_RESPONSE *resp = NULL;
OCSP_CERTID *id = NULL;
STACK_OF(X509_EXTENSION) *exts;
int ret = SSL_TLSEXT_ERR_NOACK;
int i;
if (srctx->verbose)
BIO_puts(err, "cert_status: callback called\n");
/* Build up OCSP query from server certificate */
x = SSL_get_certificate(s);
aia = X509_get1_ocsp(x);
if (aia) {
if (!OCSP_parse_url(sk_OPENSSL_STRING_value(aia, 0),
&host, &port, &path, &use_ssl)) {
BIO_puts(err, "cert_status: can't parse AIA URL\n");
goto err;
}
if (srctx->verbose)
BIO_printf(err, "cert_status: AIA URL: %s\n",
sk_OPENSSL_STRING_value(aia, 0));
} else {
if (!srctx->host) {
BIO_puts(srctx->err,
"cert_status: no AIA and no default responder URL\n");
goto done;
}
host = srctx->host;
path = srctx->path;
port = srctx->port;
use_ssl = srctx->use_ssl;
}
if ((inctx = X509_STORE_CTX_new()) == NULL)
goto err;
if (!X509_STORE_CTX_init(inctx,
SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)),
NULL, NULL))
goto err;
if ((obj = X509_OBJECT_new()) == NULL)
goto done;
if (X509_STORE_get_by_subject(inctx, X509_LU_X509,
X509_get_issuer_name(x), obj) <= 0) {
BIO_puts(err,
"cert_status: Can't retrieve issuer certificate.\n");
X509_STORE_CTX_cleanup(inctx);
goto done;
}
req = OCSP_REQUEST_new();
if (!req)
goto err;
id = OCSP_cert_to_id(NULL, x, X509_OBJECT_get0_X509(obj));
X509_OBJECT_free(obj);
obj = NULL;
X509_STORE_CTX_free(inctx);
inctx = NULL;
if (!id)
goto err;
if (!OCSP_request_add0_id(req, id))
goto err;
id = NULL;
/* Add any extensions to the request */
SSL_get_tlsext_status_exts(s, &exts);
for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
if (!OCSP_REQUEST_add_ext(req, ext, -1))
goto err;
}
resp = process_responder(err, req, host, path, port, use_ssl, NULL,
srctx->timeout);
if (!resp) {
BIO_puts(err, "cert_status: error querying responder\n");
goto done;
}
rspderlen = i2d_OCSP_RESPONSE(resp, &rspder);
if (rspderlen <= 0)
goto err;
SSL_set_tlsext_status_ocsp_resp(s, rspder, rspderlen);
if (srctx->verbose) {
BIO_puts(err, "cert_status: ocsp response sent:\n");
OCSP_RESPONSE_print(err, resp, 2);
}
ret = SSL_TLSEXT_ERR_OK;
done:
X509_STORE_CTX_free(inctx);
X509_OBJECT_free(obj);
if (ret != SSL_TLSEXT_ERR_OK)
ERR_print_errors(err);
if (aia) {
free(host);
free(path);
free(port);
X509_email_free(aia);
}
if (id)
OCSP_CERTID_free(id);
if (req)
OCSP_REQUEST_free(req);
if (resp)
OCSP_RESPONSE_free(resp);
return ret;
err:
ret = SSL_TLSEXT_ERR_ALERT_FATAL;
goto done;
}
static int
alpn_cb(SSL *s, const unsigned char **out, unsigned char *outlen,
const unsigned char *in, unsigned int inlen, void *arg)
{
tlsextalpnctx *alpn_ctx = arg;
if (!cfg.quiet) {
/* We can assume that in is syntactically valid. */
unsigned i;
BIO_printf(bio_s_out,
"ALPN protocols advertised by the client: ");
for (i = 0; i < inlen; ) {
if (i)
BIO_write(bio_s_out, ", ", 2);
BIO_write(bio_s_out, &in[i + 1], in[i]);
i += in[i] + 1;
}
BIO_write(bio_s_out, "\n", 1);
}
if (SSL_select_next_proto((unsigned char**)out, outlen, alpn_ctx->data,
alpn_ctx->len, in, inlen) != OPENSSL_NPN_NEGOTIATED)
return (SSL_TLSEXT_ERR_NOACK);
if (!cfg.quiet) {
BIO_printf(bio_s_out, "ALPN protocols selected: ");
BIO_write(bio_s_out, *out, *outlen);
BIO_write(bio_s_out, "\n", 1);
}
return (SSL_TLSEXT_ERR_OK);
}
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