initial/final commitHEADmaster

1 files changed, 3305 insertions, 0 deletions

diff --git a/openssl-1.1.0h/apps/s_server.c b/openssl-1.1.0h/apps/s_server.c
new file mode 100644
index 0000000..31c90fd
--- /dev/null
+++ b/openssl-1.1.0h/apps/s_server.c
@@ -0,0 +1,3305 @@
+/*
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/* ====================================================================
+ * 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.
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#if defined(_WIN32)
+/* Included before async.h to avoid some warnings */
+# include <windows.h>
+#endif
+
+#include <openssl/e_os2.h>
+#include <openssl/async.h>
+#include <openssl/ssl.h>
+
+#ifndef OPENSSL_NO_SOCK
+
+/*
+ * With IPv6, it looks like Digital has mixed up the proper order of
+ * recursive header file inclusion, resulting in the compiler complaining
+ * that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which is
+ * needed to have fileno() declared correctly...  So let's define u_int
+ */
+#if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
+# define __U_INT
+typedef unsigned int u_int;
+#endif
+
+#include <openssl/lhash.h>
+#include <openssl/bn.h>
+#define USE_SOCKETS
+#include "apps.h"
+#include <openssl/err.h>
+#include <openssl/pem.h>
+#include <openssl/x509.h>
+#include <openssl/ssl.h>
+#include <openssl/rand.h>
+#include <openssl/ocsp.h>
+#ifndef OPENSSL_NO_DH
+# include <openssl/dh.h>
+#endif
+#ifndef OPENSSL_NO_RSA
+# include <openssl/rsa.h>
+#endif
+#ifndef OPENSSL_NO_SRP
+# include <openssl/srp.h>
+#endif
+#include "s_apps.h"
+#include "timeouts.h"
+#ifdef CHARSET_EBCDIC
+#include <openssl/ebcdic.h>
+#endif
+
+static int not_resumable_sess_cb(SSL *s, int is_forward_secure);
+static int sv_body(int s, int stype, unsigned char *context);
+static int www_body(int s, int stype, unsigned char *context);
+static int rev_body(int s, int stype, unsigned char *context);
+static void close_accept_socket(void);
+static int init_ssl_connection(SSL *s);
+static void print_stats(BIO *bp, SSL_CTX *ctx);
+static int generate_session_id(const SSL *ssl, unsigned char *id,
+                               unsigned int *id_len);
+static void init_session_cache_ctx(SSL_CTX *sctx);
+static void free_sessions(void);
+#ifndef OPENSSL_NO_DH
+static DH *load_dh_param(const char *dhfile);
+#endif
+
+static const int bufsize = 16 * 1024;
+static int accept_socket = -1;
+
+#define TEST_CERT       "server.pem"
+#define TEST_CERT2      "server2.pem"
+
+static int s_nbio = 0;
+static int s_nbio_test = 0;
+static int s_crlf = 0;
+static SSL_CTX *ctx = NULL;
+static SSL_CTX *ctx2 = NULL;
+static int www = 0;
+
+static BIO *bio_s_out = NULL;
+static BIO *bio_s_msg = NULL;
+static int s_debug = 0;
+static int s_tlsextdebug = 0;
+static int s_msg = 0;
+static int s_quiet = 0;
+static int s_ign_eof = 0;
+static int s_brief = 0;
+
+static char *keymatexportlabel = NULL;
+static int keymatexportlen = 20;
+
+static int async = 0;
+
+static const char *session_id_prefix = NULL;
+
+#ifndef OPENSSL_NO_DTLS
+static int enable_timeouts = 0;
+static long socket_mtu;
+#endif
+
+/*
+ * We define this but make it always be 0 in no-dtls builds to simplify the
+ * code.
+ */
+static int dtlslisten = 0;
+
+#ifndef OPENSSL_NO_PSK
+static const char psk_identity[] = "Client_identity";
+char *psk_key = NULL;           /* by default PSK is not used */
+
+static unsigned int psk_server_cb(SSL *ssl, const char *identity,
+                                  unsigned char *psk,
+                                  unsigned int max_psk_len)
+{
+    long key_len = 0;
+    unsigned char *key;
+
+    if (s_debug)
+        BIO_printf(bio_s_out, "psk_server_cb\n");
+    if (!identity) {
+        BIO_printf(bio_err, "Error: client did not send PSK identity\n");
+        goto out_err;
+    }
+    if (s_debug)
+        BIO_printf(bio_s_out, "identity_len=%d identity=%s\n",
+                   (int)strlen(identity), identity);
+
+    /* here we could lookup the given identity e.g. from a database */
+    if (strcmp(identity, psk_identity) != 0) {
+        BIO_printf(bio_s_out, "PSK error: client identity not found"
+                   " (got '%s' expected '%s')\n", identity, psk_identity);
+        goto out_err;
+    }
+    if (s_debug)
+        BIO_printf(bio_s_out, "PSK client identity found\n");
+
+    /* convert the PSK key to binary */
+    key = OPENSSL_hexstr2buf(psk_key, &key_len);
+    if (key == NULL) {
+        BIO_printf(bio_err, "Could not convert PSK key '%s' to buffer\n",
+                   psk_key);
+        return 0;
+    }
+    if (key_len > (int)max_psk_len) {
+        BIO_printf(bio_err,
+                   "psk buffer of callback is too small (%d) for key (%ld)\n",
+                   max_psk_len, key_len);
+        OPENSSL_free(key);
+        return 0;
+    }
+
+    memcpy(psk, key, key_len);
+    OPENSSL_free(key);
+
+    if (s_debug)
+        BIO_printf(bio_s_out, "fetched PSK len=%ld\n", key_len);
+    return key_len;
+ out_err:
+    if (s_debug)
+        BIO_printf(bio_err, "Error in PSK server callback\n");
+    (void)BIO_flush(bio_err);
+    (void)BIO_flush(bio_s_out);
+    return 0;
+}
+#endif
+
+#ifndef OPENSSL_NO_SRP
+/* This is a context that we pass to callbacks */
+typedef struct srpsrvparm_st {
+    char *login;
+    SRP_VBASE *vb;
+    SRP_user_pwd *user;
+} srpsrvparm;
+
+/*
+ * This callback pretends to require some asynchronous logic in order to
+ * obtain a verifier. When the callback is called for a new connection we
+ * return with a negative value. This will provoke the accept etc to return
+ * with an LOOKUP_X509. The main logic of the reinvokes the suspended call
+ * (which would normally occur after a worker has finished) and we set the
+ * user parameters.
+ */
+static int ssl_srp_server_param_cb(SSL *s, int *ad, void *arg)
+{
+    srpsrvparm *p = (srpsrvparm *) arg;
+    int ret = SSL3_AL_FATAL;
+
+    if (p->login == NULL && p->user == NULL) {
+        p->login = SSL_get_srp_username(s);
+        BIO_printf(bio_err, "SRP username = \"%s\"\n", p->login);
+        return (-1);
+    }
+
+    if (p->user == NULL) {
+        BIO_printf(bio_err, "User %s doesn't exist\n", p->login);
+        goto err;
+    }
+
+    if (SSL_set_srp_server_param
+        (s, p->user->N, p->user->g, p->user->s, p->user->v,
+         p->user->info) < 0) {
+        *ad = SSL_AD_INTERNAL_ERROR;
+        goto err;
+    }
+    BIO_printf(bio_err,
+               "SRP parameters set: username = \"%s\" info=\"%s\" \n",
+               p->login, p->user->info);
+    ret = SSL_ERROR_NONE;
+
+ err:
+    SRP_user_pwd_free(p->user);
+    p->user = NULL;
+    p->login = NULL;
+    return ret;
+}
+
+#endif
+
+static int local_argc = 0;
+static char **local_argv;
+
+#ifdef CHARSET_EBCDIC
+static int ebcdic_new(BIO *bi);
+static int ebcdic_free(BIO *a);
+static int ebcdic_read(BIO *b, char *out, int outl);
+static int ebcdic_write(BIO *b, const char *in, int inl);
+static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr);
+static int ebcdic_gets(BIO *bp, char *buf, int size);
+static int ebcdic_puts(BIO *bp, const char *str);
+
+# define BIO_TYPE_EBCDIC_FILTER  (18|0x0200)
+static BIO_METHOD *methods_ebcdic = NULL;
+
+/* This struct is "unwarranted chumminess with the compiler." */
+typedef struct {
+    size_t alloced;
+    char buff[1];
+} EBCDIC_OUTBUFF;
+
+static const BIO_METHOD *BIO_f_ebcdic_filter()
+{
+    if (methods_ebcdic == NULL) {
+        methods_ebcdic = BIO_meth_new(BIO_TYPE_EBCDIC_FILTER,
+                                      "EBCDIC/ASCII filter");
+        if (methods_ebcdic == NULL
+            || !BIO_meth_set_write(methods_ebcdic, ebcdic_write)
+            || !BIO_meth_set_read(methods_ebcdic, ebcdic_read)
+            || !BIO_meth_set_puts(methods_ebcdic, ebcdic_puts)
+            || !BIO_meth_set_gets(methods_ebcdic, ebcdic_gets)
+            || !BIO_meth_set_ctrl(methods_ebcdic, ebcdic_ctrl)
+            || !BIO_meth_set_create(methods_ebcdic, ebcdic_new)
+            || !BIO_meth_set_destroy(methods_ebcdic, ebcdic_free))
+            return NULL;
+    }
+    return methods_ebcdic;
+}
+
+static int ebcdic_new(BIO *bi)
+{
+    EBCDIC_OUTBUFF *wbuf;
+
+    wbuf = app_malloc(sizeof(*wbuf) + 1024, "ebcdic wbuf");
+    wbuf->alloced = 1024;
+    wbuf->buff[0] = '\0';
+
+    BIO_set_data(bi, wbuf);
+    BIO_set_init(bi, 1);
+    return 1;
+}
+
+static int ebcdic_free(BIO *a)
+{
+    EBCDIC_OUTBUFF *wbuf;
+
+    if (a == NULL)
+        return 0;
+    wbuf = BIO_get_data(a);
+    OPENSSL_free(wbuf);
+    BIO_set_data(a, NULL);
+    BIO_set_init(a, 0);
+
+    return 1;
+}
+
+static int ebcdic_read(BIO *b, char *out, int outl)
+{
+    int ret = 0;
+    BIO *next = BIO_next(b);
+
+    if (out == NULL || outl == 0)
+        return (0);
+    if (next == NULL)
+        return (0);
+
+    ret = BIO_read(next, out, outl);
+    if (ret > 0)
+        ascii2ebcdic(out, out, ret);
+    return ret;
+}
+
+static int ebcdic_write(BIO *b, const char *in, int inl)
+{
+    EBCDIC_OUTBUFF *wbuf;
+    BIO *next = BIO_next(b);
+    int ret = 0;
+    int num;
+
+    if ((in == NULL) || (inl <= 0))
+        return (0);
+    if (next == NULL)
+        return 0;
+
+    wbuf = (EBCDIC_OUTBUFF *) BIO_get_data(b);
+
+    if (inl > (num = wbuf->alloced)) {
+        num = num + num;        /* double the size */
+        if (num < inl)
+            num = inl;
+        OPENSSL_free(wbuf);
+        wbuf = app_malloc(sizeof(*wbuf) + num, "grow ebcdic wbuf");
+
+        wbuf->alloced = num;
+        wbuf->buff[0] = '\0';
+
+        BIO_set_data(b, wbuf);
+    }
+
+    ebcdic2ascii(wbuf->buff, in, inl);
+
+    ret = BIO_write(next, wbuf->buff, inl);
+
+    return (ret);
+}
+
+static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr)
+{
+    long ret;
+    BIO *next = BIO_next(b);
+
+    if (next == NULL)
+        return (0);
+    switch (cmd) {
+    case BIO_CTRL_DUP:
+        ret = 0L;
+        break;
+    default:
+        ret = BIO_ctrl(next, cmd, num, ptr);
+        break;
+    }
+    return (ret);
+}
+
+static int ebcdic_gets(BIO *bp, char *buf, int size)
+{
+    int i, ret = 0;
+    BIO *next = BIO_next(bp);
+
+    if (next == NULL)
+        return 0;
+/*      return(BIO_gets(bp->next_bio,buf,size));*/
+    for (i = 0; i < size - 1; ++i) {
+        ret = ebcdic_read(bp, &buf[i], 1);
+        if (ret <= 0)
+            break;
+        else if (buf[i] == '\n') {
+            ++i;
+            break;
+        }
+    }
+    if (i < size)
+        buf[i] = '\0';
+    return (ret < 0 && i == 0) ? ret : i;
+}
+
+static int ebcdic_puts(BIO *bp, const char *str)
+{
+    if (BIO_next(bp) == NULL)
+        return 0;
+    return ebcdic_write(bp, str, strlen(str));
+}
+#endif
+
+/* This is a context that we pass to callbacks */
+typedef struct tlsextctx_st {
+    char *servername;
+    BIO *biodebug;
+    int extension_error;
+} tlsextctx;
+
+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 (strcasecmp(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;
+}
+
+/* Structure passed to cert status callback */
+typedef struct tlsextstatusctx_st {
+    /* Default responder to use */
+    char *host, *path, *port;
+    int use_ssl;
+    int timeout;
+    int verbose;
+} tlsextstatusctx;
+
+static tlsextstatusctx tlscstatp = { NULL, NULL, NULL, 0, -1, 0 };
+
+#ifndef OPENSSL_NO_OCSP
+/*
+ * 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;
+    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;
+    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(bio_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(bio_err, "cert_status: can't parse AIA URL\n");
+            goto err;
+        }
+        if (srctx->verbose)
+            BIO_printf(bio_err, "cert_status: AIA URL: %s\n",
+                       sk_OPENSSL_STRING_value(aia, 0));
+    } else {
+        if (!srctx->host) {
+            BIO_puts(bio_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;
+    }
+
+    inctx = X509_STORE_CTX_new();
+    if (inctx == NULL)
+        goto err;
+    if (!X509_STORE_CTX_init(inctx,
+                             SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)),
+                             NULL, NULL))
+        goto err;
+    obj = X509_STORE_CTX_get_obj_by_subject(inctx, X509_LU_X509,
+                                            X509_get_issuer_name(x));
+    if (obj == NULL) {
+        BIO_puts(bio_err, "cert_status: Can't retrieve issuer certificate.\n");
+        goto done;
+    }
+    id = OCSP_cert_to_id(NULL, x, X509_OBJECT_get0_X509(obj));
+    X509_OBJECT_free(obj);
+    if (!id)
+        goto err;
+    req = OCSP_REQUEST_new();
+    if (req == NULL)
+        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(req, host, path, port, use_ssl, NULL,
+                             srctx->timeout);
+    if (!resp) {
+        BIO_puts(bio_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(bio_err, "cert_status: ocsp response sent:\n");
+        OCSP_RESPONSE_print(bio_err, resp, 2);
+    }
+    ret = SSL_TLSEXT_ERR_OK;
+    goto done;
+
+ err:
+    ret = SSL_TLSEXT_ERR_ALERT_FATAL;
+ done:
+    if (ret != SSL_TLSEXT_ERR_OK)
+        ERR_print_errors(bio_err);
+    if (aia) {
+        OPENSSL_free(host);
+        OPENSSL_free(path);
+        OPENSSL_free(port);
+        X509_email_free(aia);
+    }
+    OCSP_CERTID_free(id);
+    OCSP_REQUEST_free(req);
+    OCSP_RESPONSE_free(resp);
+    X509_STORE_CTX_free(inctx);
+    return ret;
+}
+#endif
+
+#ifndef OPENSSL_NO_NEXTPROTONEG
+/* This is the context that we pass to next_proto_cb */
+typedef struct tlsextnextprotoctx_st {
+    unsigned char *data;
+    size_t len;
+} tlsextnextprotoctx;
+
+static int next_proto_cb(SSL *s, const unsigned char **data,
+                         unsigned int *len, void *arg)
+{
+    tlsextnextprotoctx *next_proto = arg;
+
+    *data = next_proto->data;
+    *len = next_proto->len;
+
+    return SSL_TLSEXT_ERR_OK;
+}
+#endif                         /* ndef OPENSSL_NO_NEXTPROTONEG */
+
+/* This the context that we pass to alpn_cb */
+typedef struct tlsextalpnctx_st {
+    unsigned char *data;
+    size_t len;
+} tlsextalpnctx;
+
+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 (!s_quiet) {
+        /* We can assume that |in| is syntactically valid. */
+        unsigned int 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 (!s_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;
+}
+
+static int not_resumable_sess_cb(SSL *s, int is_forward_secure)
+{
+    /* disable resumption for sessions with forward secure ciphers */
+    return is_forward_secure;
+}
+
+#ifndef OPENSSL_NO_SRP
+static srpsrvparm srp_callback_parm;
+#endif
+#ifndef OPENSSL_NO_SRTP
+static char *srtp_profiles = NULL;
+#endif
+
+typedef enum OPTION_choice {
+    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, OPT_ENGINE,
+    OPT_4, OPT_6, OPT_ACCEPT, OPT_PORT, OPT_UNIX, OPT_UNLINK, OPT_NACCEPT,
+    OPT_VERIFY, OPT_UPPER_V_VERIFY, OPT_CONTEXT, OPT_CERT, OPT_CRL,
+    OPT_CRL_DOWNLOAD, OPT_SERVERINFO, OPT_CERTFORM, OPT_KEY, OPT_KEYFORM,
+    OPT_PASS, OPT_CERT_CHAIN, OPT_DHPARAM, OPT_DCERTFORM, OPT_DCERT,
+    OPT_DKEYFORM, OPT_DPASS, OPT_DKEY, OPT_DCERT_CHAIN, OPT_NOCERT,
+    OPT_CAPATH, OPT_NOCAPATH, OPT_CHAINCAPATH, OPT_VERIFYCAPATH, OPT_NO_CACHE,
+    OPT_EXT_CACHE, OPT_CRLFORM, OPT_VERIFY_RET_ERROR, OPT_VERIFY_QUIET,
+    OPT_BUILD_CHAIN, OPT_CAFILE, OPT_NOCAFILE, OPT_CHAINCAFILE,
+    OPT_VERIFYCAFILE, OPT_NBIO, OPT_NBIO_TEST, OPT_IGN_EOF, OPT_NO_IGN_EOF,
+    OPT_DEBUG, OPT_TLSEXTDEBUG, OPT_STATUS, OPT_STATUS_VERBOSE,
+    OPT_STATUS_TIMEOUT, OPT_STATUS_URL, OPT_MSG, OPT_MSGFILE, OPT_TRACE,
+    OPT_SECURITY_DEBUG, OPT_SECURITY_DEBUG_VERBOSE, OPT_STATE, OPT_CRLF,
+    OPT_QUIET, OPT_BRIEF, OPT_NO_DHE,
+    OPT_NO_RESUME_EPHEMERAL, OPT_PSK_HINT, OPT_PSK, OPT_SRPVFILE,
+    OPT_SRPUSERSEED, OPT_REV, OPT_WWW, OPT_UPPER_WWW, OPT_HTTP, OPT_ASYNC,
+    OPT_SSL_CONFIG, OPT_SPLIT_SEND_FRAG, OPT_MAX_PIPELINES, OPT_READ_BUF,
+    OPT_SSL3, OPT_TLS1_2, OPT_TLS1_1, OPT_TLS1, OPT_DTLS, OPT_DTLS1,
+    OPT_DTLS1_2, OPT_TIMEOUT, OPT_MTU, OPT_LISTEN,
+    OPT_ID_PREFIX, OPT_RAND, OPT_SERVERNAME, OPT_SERVERNAME_FATAL,
+    OPT_CERT2, OPT_KEY2, OPT_NEXTPROTONEG, OPT_ALPN,
+    OPT_SRTP_PROFILES, OPT_KEYMATEXPORT, OPT_KEYMATEXPORTLEN,
+    OPT_S_ENUM,
+    OPT_V_ENUM,
+    OPT_X_ENUM
+} OPTION_CHOICE;
+
+OPTIONS s_server_options[] = {
+    {"help", OPT_HELP, '-', "Display this summary"},
+    {"port", OPT_PORT, 'p',
+     "TCP/IP port to listen on for connections (default is " PORT ")"},
+    {"accept", OPT_ACCEPT, 's',
+     "TCP/IP optional host and port to listen on for connections (default is *:" PORT ")"},
+#ifdef AF_UNIX
+    {"unix", OPT_UNIX, 's', "Unix domain socket to accept on"},
+#endif
+    {"4", OPT_4, '-', "Use IPv4 only"},
+    {"6", OPT_6, '-', "Use IPv6 only"},
+#ifdef AF_UNIX
+    {"unlink", OPT_UNLINK, '-', "For -unix, unlink existing socket first"},
+#endif
+    {"context", OPT_CONTEXT, 's', "Set session ID context"},
+    {"verify", OPT_VERIFY, 'n', "Turn on peer certificate verification"},
+    {"Verify", OPT_UPPER_V_VERIFY, 'n',
+     "Turn on peer certificate verification, must have a cert"},
+    {"cert", OPT_CERT, '<', "Certificate file to use; default is " TEST_CERT},
+    {"naccept", OPT_NACCEPT, 'p', "Terminate after #num connections"},
+    {"serverinfo", OPT_SERVERINFO, 's',
+     "PEM serverinfo file for certificate"},
+    {"certform", OPT_CERTFORM, 'F',
+     "Certificate format (PEM or DER) PEM default"},
+    {"key", OPT_KEY, 's',
+     "Private Key if not in -cert; default is " TEST_CERT},
+    {"keyform", OPT_KEYFORM, 'f',
+     "Key format (PEM, DER or ENGINE) PEM default"},
+    {"pass", OPT_PASS, 's', "Private key file pass phrase source"},
+    {"dcert", OPT_DCERT, '<',
+     "Second certificate file to use (usually for DSA)"},
+    {"dhparam", OPT_DHPARAM, '<', "DH parameters file to use"},
+    {"dcertform", OPT_DCERTFORM, 'F',
+     "Second certificate format (PEM or DER) PEM default"},
+    {"dkey", OPT_DKEY, '<',
+     "Second private key file to use (usually for DSA)"},
+    {"dkeyform", OPT_DKEYFORM, 'F',
+     "Second key format (PEM, DER or ENGINE) PEM default"},
+    {"dpass", OPT_DPASS, 's', "Second private key file pass phrase source"},
+    {"nbio_test", OPT_NBIO_TEST, '-', "Test with the non-blocking test bio"},
+    {"crlf", OPT_CRLF, '-', "Convert LF from terminal into CRLF"},
+    {"debug", OPT_DEBUG, '-', "Print more output"},
+    {"msg", OPT_MSG, '-', "Show protocol messages"},
+    {"msgfile", OPT_MSGFILE, '>',
+     "File to send output of -msg or -trace, instead of stdout"},
+    {"state", OPT_STATE, '-', "Print the SSL states"},
+    {"CAfile", OPT_CAFILE, '<', "PEM format file of CA's"},
+    {"CApath", OPT_CAPATH, '/', "PEM format directory of CA's"},
+    {"no-CAfile", OPT_NOCAFILE, '-',
+     "Do not load the default certificates file"},
+    {"no-CApath", OPT_NOCAPATH, '-',
+     "Do not load certificates from the default certificates directory"},
+    {"nocert", OPT_NOCERT, '-', "Don't use any certificates (Anon-DH)"},
+    {"quiet", OPT_QUIET, '-', "No server output"},
+    {"no_resume_ephemeral", OPT_NO_RESUME_EPHEMERAL, '-',
+     "Disable caching and tickets if ephemeral (EC)DH is used"},
+    {"www", OPT_WWW, '-', "Respond to a 'GET /' with a status page"},
+    {"WWW", OPT_UPPER_WWW, '-', "Respond to a 'GET with the file ./path"},
+    {"servername", OPT_SERVERNAME, 's',
+     "Servername for HostName TLS extension"},
+    {"servername_fatal", OPT_SERVERNAME_FATAL, '-',
+     "mismatch send fatal alert (default warning alert)"},
+    {"cert2", OPT_CERT2, '<',
+     "Certificate file to use for servername; default is" TEST_CERT2},
+    {"key2", OPT_KEY2, '<',
+     "-Private Key file to use for servername if not in -cert2"},
+    {"tlsextdebug", OPT_TLSEXTDEBUG, '-',
+     "Hex dump of all TLS extensions received"},
+    {"HTTP", OPT_HTTP, '-', "Like -WWW but ./path includes HTTP headers"},
+    {"id_prefix", OPT_ID_PREFIX, 's',
+     "Generate SSL/TLS session IDs prefixed by arg"},
+    {"rand", OPT_RAND, 's',
+     "Load the file(s) into the random number generator"},
+    {"keymatexport", OPT_KEYMATEXPORT, 's',
+     "Export keying material using label"},
+    {"keymatexportlen", OPT_KEYMATEXPORTLEN, 'p',
+     "Export len bytes of keying material (default 20)"},
+    {"CRL", OPT_CRL, '<', "CRL file to use"},
+    {"crl_download", OPT_CRL_DOWNLOAD, '-',
+     "Download CRL from distribution points"},
+    {"cert_chain", OPT_CERT_CHAIN, '<',
+     "certificate chain file in PEM format"},
+    {"dcert_chain", OPT_DCERT_CHAIN, '<',
+     "second certificate chain file in PEM format"},
+    {"chainCApath", OPT_CHAINCAPATH, '/',
+     "use dir as certificate store path to build CA certificate chain"},
+    {"verifyCApath", OPT_VERIFYCAPATH, '/',
+     "use dir as certificate store path to verify CA certificate"},
+    {"no_cache", OPT_NO_CACHE, '-', "Disable session cache"},
+    {"ext_cache", OPT_EXT_CACHE, '-',
+     "Disable internal cache, setup and use external cache"},
+    {"CRLform", OPT_CRLFORM, 'F', "CRL format (PEM or DER) PEM is default"},
+    {"verify_return_error", OPT_VERIFY_RET_ERROR, '-',
+     "Close connection on verification error"},
+    {"verify_quiet", OPT_VERIFY_QUIET, '-',
+     "No verify output except verify errors"},
+    {"build_chain", OPT_BUILD_CHAIN, '-', "Build certificate chain"},
+    {"chainCAfile", OPT_CHAINCAFILE, '<',
+     "CA file for certificate chain (PEM format)"},
+    {"verifyCAfile", OPT_VERIFYCAFILE, '<',
+     "CA file for certificate verification (PEM format)"},
+    {"ign_eof", OPT_IGN_EOF, '-', "ignore input eof (default when -quiet)"},
+    {"no_ign_eof", OPT_NO_IGN_EOF, '-', "Do not ignore input eof"},
+#ifndef OPENSSL_NO_OCSP
+    {"status", OPT_STATUS, '-', "Request certificate status from server"},
+    {"status_verbose", OPT_STATUS_VERBOSE, '-',
+     "Print more output in certificate status callback"},
+    {"status_timeout", OPT_STATUS_TIMEOUT, 'n',
+     "Status request responder timeout"},
+    {"status_url", OPT_STATUS_URL, 's', "Status request fallback URL"},
+#endif
+#ifndef OPENSSL_NO_SSL_TRACE
+    {"trace", OPT_TRACE, '-', "trace protocol messages"},
+#endif
+    {"security_debug", OPT_SECURITY_DEBUG, '-',
+     "Print output from SSL/TLS security framework"},
+    {"security_debug_verbose", OPT_SECURITY_DEBUG_VERBOSE, '-',
+     "Print more output from SSL/TLS security framework"},
+    {"brief", OPT_BRIEF, '-',
+     "Restrict output to brief summary of connection parameters"},
+    {"rev", OPT_REV, '-',
+     "act as a simple test server which just sends back with the received text reversed"},
+    {"async", OPT_ASYNC, '-', "Operate in asynchronous mode"},
+    {"ssl_config", OPT_SSL_CONFIG, 's',
+     "Configure SSL_CTX using the configuration 'val'"},
+    {"split_send_frag", OPT_SPLIT_SEND_FRAG, 'n',
+     "Size used to split data for encrypt pipelines"},
+    {"max_pipelines", OPT_MAX_PIPELINES, 'n',
+     "Maximum number of encrypt/decrypt pipelines to be used"},
+    {"read_buf", OPT_READ_BUF, 'n',
+     "Default read buffer size to be used for connections"},
+    OPT_S_OPTIONS,
+    OPT_V_OPTIONS,
+    OPT_X_OPTIONS,
+    {"nbio", OPT_NBIO, '-', "Use non-blocking IO"},
+#ifndef OPENSSL_NO_PSK
+    {"psk_hint", OPT_PSK_HINT, 's', "PSK identity hint to use"},
+    {"psk", OPT_PSK, 's', "PSK in hex (without 0x)"},
+#endif
+#ifndef OPENSSL_NO_SRP
+    {"srpvfile", OPT_SRPVFILE, '<', "The verifier file for SRP"},
+    {"srpuserseed", OPT_SRPUSERSEED, 's',
+     "A seed string for a default user salt"},
+#endif
+#ifndef OPENSSL_NO_SSL3
+    {"ssl3", OPT_SSL3, '-', "Just talk SSLv3"},
+#endif
+#ifndef OPENSSL_NO_TLS1
+    {"tls1", OPT_TLS1, '-', "Just talk TLSv1"},
+#endif
+#ifndef OPENSSL_NO_TLS1_1
+    {"tls1_1", OPT_TLS1_1, '-', "Just talk TLSv1.1"},
+#endif
+#ifndef OPENSSL_NO_TLS1_2
+    {"tls1_2", OPT_TLS1_2, '-', "just talk TLSv1.2"},
+#endif
+#ifndef OPENSSL_NO_DTLS
+    {"dtls", OPT_DTLS, '-', "Use any DTLS version"},
+    {"timeout", OPT_TIMEOUT, '-', "Enable timeouts"},
+    {"mtu", OPT_MTU, 'p', "Set link layer MTU"},
+    {"listen", OPT_LISTEN, '-',
+     "Listen for a DTLS ClientHello with a cookie and then connect"},
+#endif
+#ifndef OPENSSL_NO_DTLS1
+    {"dtls1", OPT_DTLS1, '-', "Just talk DTLSv1"},
+#endif
+#ifndef OPENSSL_NO_DTLS1_2
+    {"dtls1_2", OPT_DTLS1_2, '-', "Just talk DTLSv1.2"},
+#endif
+#ifndef OPENSSL_NO_DH
+    {"no_dhe", OPT_NO_DHE, '-', "Disable ephemeral DH"},
+#endif
+#ifndef OPENSSL_NO_NEXTPROTONEG
+    {"nextprotoneg", OPT_NEXTPROTONEG, 's',
+     "Set the advertised protocols for the NPN extension (comma-separated list)"},
+#endif
+#ifndef OPENSSL_NO_SRTP
+    {"use_srtp", OPT_SRTP_PROFILES, 's',
+     "Offer SRTP key management with a colon-separated profile list"},
+#endif
+    {"alpn", OPT_ALPN, 's',
+     "Set the advertised protocols for the ALPN extension (comma-separated list)"},
+#ifndef OPENSSL_NO_ENGINE
+    {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
+#endif
+    {NULL, OPT_EOF, 0, NULL}
+};
+
+#define IS_PROT_FLAG(o) \
+ (o == OPT_SSL3 || o == OPT_TLS1 || o == OPT_TLS1_1 || o == OPT_TLS1_2 \
+  || o == OPT_DTLS || o == OPT_DTLS1 || o == OPT_DTLS1_2)
+
+int s_server_main(int argc, char *argv[])
+{
+    ENGINE *engine = NULL;
+    EVP_PKEY *s_key = NULL, *s_dkey = NULL;
+    SSL_CONF_CTX *cctx = NULL;
+    const SSL_METHOD *meth = TLS_server_method();
+    SSL_EXCERT *exc = NULL;
+    STACK_OF(OPENSSL_STRING) *ssl_args = NULL;
+    STACK_OF(X509) *s_chain = NULL, *s_dchain = NULL;
+    STACK_OF(X509_CRL) *crls = NULL;
+    X509 *s_cert = NULL, *s_dcert = NULL;
+    X509_VERIFY_PARAM *vpm = NULL;
+    const char *CApath = NULL, *CAfile = NULL, *chCApath = NULL, *chCAfile = NULL;
+    char *dpassarg = NULL, *dpass = NULL, *inrand = NULL;
+    char *passarg = NULL, *pass = NULL, *vfyCApath = NULL, *vfyCAfile = NULL;
+    char *crl_file = NULL, *prog;
+#ifdef AF_UNIX
+    int unlink_unix_path = 0;
+#endif
+    do_server_cb server_cb;
+    int vpmtouched = 0, build_chain = 0, no_cache = 0, ext_cache = 0;
+#ifndef OPENSSL_NO_DH
+    char *dhfile = NULL;
+    int no_dhe = 0;
+#endif
+    int nocert = 0, ret = 1;
+    int noCApath = 0, noCAfile = 0;
+    int s_cert_format = FORMAT_PEM, s_key_format = FORMAT_PEM;
+    int s_dcert_format = FORMAT_PEM, s_dkey_format = FORMAT_PEM;
+    int rev = 0, naccept = -1, sdebug = 0;
+    int socket_family = AF_UNSPEC, socket_type = SOCK_STREAM;
+    int state = 0, crl_format = FORMAT_PEM, crl_download = 0;
+    char *host = NULL;
+    char *port = BUF_strdup(PORT);
+    unsigned char *context = NULL;
+    OPTION_CHOICE o;
+    EVP_PKEY *s_key2 = NULL;
+    X509 *s_cert2 = NULL;
+    tlsextctx tlsextcbp = { NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING };
+    const char *ssl_config = NULL;
+    int read_buf_len = 0;
+#ifndef OPENSSL_NO_NEXTPROTONEG
+    const char *next_proto_neg_in = NULL;
+    tlsextnextprotoctx next_proto = { NULL, 0 };
+#endif
+    const char *alpn_in = NULL;
+    tlsextalpnctx alpn_ctx = { NULL, 0 };
+#ifndef OPENSSL_NO_PSK
+    /* by default do not send a PSK identity hint */
+    char *psk_identity_hint = NULL;
+    char *p;
+#endif
+#ifndef OPENSSL_NO_SRP
+    char *srpuserseed = NULL;
+    char *srp_verifier_file = NULL;
+#endif
+    int min_version = 0, max_version = 0, prot_opt = 0, no_prot_opt = 0;
+    int s_server_verify = SSL_VERIFY_NONE;
+    int s_server_session_id_context = 1; /* anything will do */
+    const char *s_cert_file = TEST_CERT, *s_key_file = NULL, *s_chain_file = NULL;
+    const char *s_cert_file2 = TEST_CERT2, *s_key_file2 = NULL;
+    char *s_dcert_file = NULL, *s_dkey_file = NULL, *s_dchain_file = NULL;
+#ifndef OPENSSL_NO_OCSP
+    int s_tlsextstatus = 0;
+#endif
+    int no_resume_ephemeral = 0;
+    unsigned int split_send_fragment = 0, max_pipelines = 0;
+    const char *s_serverinfo_file = NULL;
+
+    /* Init of few remaining global variables */
+    local_argc = argc;
+    local_argv = argv;
+
+    ctx = ctx2 = NULL;
+    s_nbio = s_nbio_test = 0;
+    www = 0;
+    bio_s_out = NULL;
+    s_debug = 0;
+    s_msg = 0;
+    s_quiet = 0;
+    s_brief = 0;
+    async = 0;
+
+    cctx = SSL_CONF_CTX_new();
+    vpm = X509_VERIFY_PARAM_new();
+    if (cctx == NULL || vpm == NULL)
+        goto end;
+    SSL_CONF_CTX_set_flags(cctx,
+                           SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CMDLINE);
+
+    prog = opt_init(argc, argv, s_server_options);
+    while ((o = opt_next()) != OPT_EOF) {
+        if (IS_PROT_FLAG(o) && ++prot_opt > 1) {
+            BIO_printf(bio_err, "Cannot supply multiple protocol flags\n");
+            goto end;
+        }
+        if (IS_NO_PROT_FLAG(o))
+            no_prot_opt++;
+        if (prot_opt == 1 && no_prot_opt) {
+            BIO_printf(bio_err,
+                       "Cannot supply both a protocol flag and '-no_<prot>'\n");
+            goto end;
+        }
+        switch (o) {
+        case OPT_EOF:
+        case OPT_ERR:
+ opthelp:
+            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
+            goto end;
+        case OPT_HELP:
+            opt_help(s_server_options);
+            ret = 0;
+            goto end;
+
+        case OPT_4:
+#ifdef AF_UNIX
+            if (socket_family == AF_UNIX) {
+                OPENSSL_free(host); host = NULL;
+                OPENSSL_free(port); port = NULL;
+            }
+#endif
+            socket_family = AF_INET;
+            break;
+        case OPT_6:
+            if (1) {
+#ifdef AF_INET6
+#ifdef AF_UNIX
+                if (socket_family == AF_UNIX) {
+                    OPENSSL_free(host); host = NULL;
+                    OPENSSL_free(port); port = NULL;
+                }
+#endif
+                socket_family = AF_INET6;
+            } else {
+#endif
+                BIO_printf(bio_err, "%s: IPv6 domain sockets unsupported\n", prog);
+                goto end;
+            }
+            break;
+        case OPT_PORT:
+#ifdef AF_UNIX
+            if (socket_family == AF_UNIX) {
+                socket_family = AF_UNSPEC;
+            }
+#endif
+            OPENSSL_free(port); port = NULL;
+            OPENSSL_free(host); host = NULL;
+            if (BIO_parse_hostserv(opt_arg(), NULL, &port, BIO_PARSE_PRIO_SERV) < 1) {
+                BIO_printf(bio_err,
+                           "%s: -port argument malformed or ambiguous\n",
+                           port);
+                goto end;
+            }
+            break;
+        case OPT_ACCEPT:
+#ifdef AF_UNIX
+            if (socket_family == AF_UNIX) {
+                socket_family = AF_UNSPEC;
+            }
+#endif
+            OPENSSL_free(port); port = NULL;
+            OPENSSL_free(host); host = NULL;
+            if (BIO_parse_hostserv(opt_arg(), &host, &port, BIO_PARSE_PRIO_SERV) < 1) {
+                BIO_printf(bio_err,
+                           "%s: -accept argument malformed or ambiguous\n",
+                           port);
+                goto end;
+            }
+            break;
+#ifdef AF_UNIX
+        case OPT_UNIX:
+            socket_family = AF_UNIX;
+            OPENSSL_free(host); host = BUF_strdup(opt_arg());
+            OPENSSL_free(port); port = NULL;
+            break;
+        case OPT_UNLINK:
+            unlink_unix_path = 1;
+            break;
+#endif
+        case OPT_NACCEPT:
+            naccept = atol(opt_arg());
+            break;
+        case OPT_VERIFY:
+            s_server_verify = SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE;
+            verify_args.depth = atoi(opt_arg());
+            if (!s_quiet)
+                BIO_printf(bio_err, "verify depth is %d\n", verify_args.depth);
+            break;
+        case OPT_UPPER_V_VERIFY:
+            s_server_verify =
+                SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT |
+                SSL_VERIFY_CLIENT_ONCE;
+            verify_args.depth = atoi(opt_arg());
+            if (!s_quiet)
+                BIO_printf(bio_err,
+                           "verify depth is %d, must return a certificate\n",
+                           verify_args.depth);
+            break;
+        case OPT_CONTEXT:
+            context = (unsigned char *)opt_arg();
+            break;
+        case OPT_CERT:
+            s_cert_file = opt_arg();
+            break;
+        case OPT_CRL:
+            crl_file = opt_arg();
+            break;
+        case OPT_CRL_DOWNLOAD:
+            crl_download = 1;
+            break;
+        case OPT_SERVERINFO:
+            s_serverinfo_file = opt_arg();
+            break;
+        case OPT_CERTFORM:
+            if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &s_cert_format))
+                goto opthelp;
+            break;
+        case OPT_KEY:
+            s_key_file = opt_arg();
+            break;
+        case OPT_KEYFORM:
+            if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_key_format))
+                goto opthelp;
+            break;
+        case OPT_PASS:
+            passarg = opt_arg();
+            break;
+        case OPT_CERT_CHAIN:
+            s_chain_file = opt_arg();
+            break;
+        case OPT_DHPARAM:
+#ifndef OPENSSL_NO_DH
+            dhfile = opt_arg();
+#endif
+            break;
+        case OPT_DCERTFORM:
+            if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &s_dcert_format))
+                goto opthelp;
+            break;
+        case OPT_DCERT:
+            s_dcert_file = opt_arg();
+            break;
+        case OPT_DKEYFORM:
+            if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &s_dkey_format))
+                goto opthelp;
+            break;
+        case OPT_DPASS:
+            dpassarg = opt_arg();
+            break;
+        case OPT_DKEY:
+            s_dkey_file = opt_arg();
+            break;
+        case OPT_DCERT_CHAIN:
+            s_dchain_file = opt_arg();
+            break;
+        case OPT_NOCERT:
+            nocert = 1;
+            break;
+        case OPT_CAPATH:
+            CApath = opt_arg();
+            break;
+        case OPT_NOCAPATH:
+            noCApath = 1;
+            break;
+        case OPT_CHAINCAPATH:
+            chCApath = opt_arg();
+            break;
+        case OPT_VERIFYCAPATH:
+            vfyCApath = opt_arg();
+            break;
+        case OPT_NO_CACHE:
+            no_cache = 1;
+            break;
+        case OPT_EXT_CACHE:
+            ext_cache = 1;
+            break;
+        case OPT_CRLFORM:
+            if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &crl_format))
+                goto opthelp;
+            break;
+        case OPT_S_CASES:
+            if (ssl_args == NULL)
+                ssl_args = sk_OPENSSL_STRING_new_null();
+            if (ssl_args == NULL
+                || !sk_OPENSSL_STRING_push(ssl_args, opt_flag())
+                || !sk_OPENSSL_STRING_push(ssl_args, opt_arg())) {
+                BIO_printf(bio_err, "%s: Memory allocation failure\n", prog);
+                goto end;
+            }
+            break;
+        case OPT_V_CASES:
+            if (!opt_verify(o, vpm))
+                goto end;
+            vpmtouched++;
+            break;
+        case OPT_X_CASES:
+            if (!args_excert(o, &exc))
+                goto end;
+            break;
+        case OPT_VERIFY_RET_ERROR:
+            verify_args.return_error = 1;
+            break;
+        case OPT_VERIFY_QUIET:
+            verify_args.quiet = 1;
+            break;
+        case OPT_BUILD_CHAIN:
+            build_chain = 1;
+            break;
+        case OPT_CAFILE:
+            CAfile = opt_arg();
+            break;
+        case OPT_NOCAFILE:
+            noCAfile = 1;
+            break;
+        case OPT_CHAINCAFILE:
+            chCAfile = opt_arg();
+            break;
+        case OPT_VERIFYCAFILE:
+            vfyCAfile = opt_arg();
+            break;
+        case OPT_NBIO:
+            s_nbio = 1;
+            break;
+        case OPT_NBIO_TEST:
+            s_nbio = s_nbio_test = 1;
+            break;
+        case OPT_IGN_EOF:
+            s_ign_eof = 1;
+            break;
+        case OPT_NO_IGN_EOF:
+            s_ign_eof = 0;
+            break;
+        case OPT_DEBUG:
+            s_debug = 1;
+            break;
+        case OPT_TLSEXTDEBUG:
+            s_tlsextdebug = 1;
+            break;
+        case OPT_STATUS:
+#ifndef OPENSSL_NO_OCSP
+            s_tlsextstatus = 1;
+#endif
+            break;
+        case OPT_STATUS_VERBOSE:
+#ifndef OPENSSL_NO_OCSP
+            s_tlsextstatus = tlscstatp.verbose = 1;
+#endif
+            break;
+        case OPT_STATUS_TIMEOUT:
+#ifndef OPENSSL_NO_OCSP
+            s_tlsextstatus = 1;
+            tlscstatp.timeout = atoi(opt_arg());
+#endif
+            break;
+        case OPT_STATUS_URL:
+#ifndef OPENSSL_NO_OCSP
+            s_tlsextstatus = 1;
+            if (!OCSP_parse_url(opt_arg(),
+                                &tlscstatp.host,
+                                &tlscstatp.port,
+                                &tlscstatp.path, &tlscstatp.use_ssl)) {
+                BIO_printf(bio_err, "Error parsing URL\n");
+                goto end;
+            }
+#endif
+            break;
+        case OPT_MSG:
+            s_msg = 1;
+            break;
+        case OPT_MSGFILE:
+            bio_s_msg = BIO_new_file(opt_arg(), "w");
+            break;
+        case OPT_TRACE:
+#ifndef OPENSSL_NO_SSL_TRACE
+            s_msg = 2;
+#endif
+            break;
+        case OPT_SECURITY_DEBUG:
+            sdebug = 1;
+            break;
+        case OPT_SECURITY_DEBUG_VERBOSE:
+            sdebug = 2;
+            break;
+        case OPT_STATE:
+            state = 1;
+            break;
+        case OPT_CRLF:
+            s_crlf = 1;
+            break;
+        case OPT_QUIET:
+            s_quiet = 1;
+            break;
+        case OPT_BRIEF:
+            s_quiet = s_brief = verify_args.quiet = 1;
+            break;
+        case OPT_NO_DHE:
+#ifndef OPENSSL_NO_DH
+            no_dhe = 1;
+#endif
+            break;
+        case OPT_NO_RESUME_EPHEMERAL:
+            no_resume_ephemeral = 1;
+            break;
+        case OPT_PSK_HINT:
+#ifndef OPENSSL_NO_PSK
+            psk_identity_hint = opt_arg();
+#endif
+            break;
+        case OPT_PSK:
+#ifndef OPENSSL_NO_PSK
+            for (p = psk_key = opt_arg(); *p; p++) {
+                if (isxdigit(_UC(*p)))
+                    continue;
+                BIO_printf(bio_err, "Not a hex number '%s'\n", *argv);
+                goto end;
+            }
+#endif
+            break;
+        case OPT_SRPVFILE:
+#ifndef OPENSSL_NO_SRP
+            srp_verifier_file = opt_arg();
+            if (min_version < TLS1_VERSION)
+                min_version = TLS1_VERSION;
+#endif
+            break;
+        case OPT_SRPUSERSEED:
+#ifndef OPENSSL_NO_SRP
+            srpuserseed = opt_arg();
+            if (min_version < TLS1_VERSION)
+                min_version = TLS1_VERSION;
+#endif
+            break;
+        case OPT_REV:
+            rev = 1;
+            break;
+        case OPT_WWW:
+            www = 1;
+            break;
+        case OPT_UPPER_WWW:
+            www = 2;
+            break;
+        case OPT_HTTP:
+            www = 3;
+            break;
+        case OPT_SSL_CONFIG:
+            ssl_config = opt_arg();
+            break;
+        case OPT_SSL3:
+            min_version = SSL3_VERSION;
+            max_version = SSL3_VERSION;
+            break;
+        case OPT_TLS1_2:
+            min_version = TLS1_2_VERSION;
+            max_version = TLS1_2_VERSION;
+            break;
+        case OPT_TLS1_1:
+            min_version = TLS1_1_VERSION;
+            max_version = TLS1_1_VERSION;
+            break;
+        case OPT_TLS1:
+            min_version = TLS1_VERSION;
+            max_version = TLS1_VERSION;
+            break;
+        case OPT_DTLS:
+#ifndef OPENSSL_NO_DTLS
+            meth = DTLS_server_method();
+            socket_type = SOCK_DGRAM;
+#endif
+            break;
+        case OPT_DTLS1:
+#ifndef OPENSSL_NO_DTLS
+            meth = DTLS_server_method();
+            min_version = DTLS1_VERSION;
+            max_version = DTLS1_VERSION;
+            socket_type = SOCK_DGRAM;
+#endif
+            break;
+        case OPT_DTLS1_2:
+#ifndef OPENSSL_NO_DTLS
+            meth = DTLS_server_method();
+            min_version = DTLS1_2_VERSION;
+            max_version = DTLS1_2_VERSION;
+            socket_type = SOCK_DGRAM;
+#endif
+            break;
+        case OPT_TIMEOUT:
+#ifndef OPENSSL_NO_DTLS
+            enable_timeouts = 1;
+#endif
+            break;
+        case OPT_MTU:
+#ifndef OPENSSL_NO_DTLS
+            socket_mtu = atol(opt_arg());
+#endif
+            break;
+        case OPT_LISTEN:
+#ifndef OPENSSL_NO_DTLS
+            dtlslisten = 1;
+#endif
+            break;
+        case OPT_ID_PREFIX:
+            session_id_prefix = opt_arg();
+            break;
+        case OPT_ENGINE:
+            engine = setup_engine(opt_arg(), 1);
+            break;
+        case OPT_RAND:
+            inrand = opt_arg();
+            break;
+        case OPT_SERVERNAME:
+            tlsextcbp.servername = opt_arg();
+            break;
+        case OPT_SERVERNAME_FATAL:
+            tlsextcbp.extension_error = SSL_TLSEXT_ERR_ALERT_FATAL;
+            break;
+        case OPT_CERT2:
+            s_cert_file2 = opt_arg();
+            break;
+        case OPT_KEY2:
+            s_key_file2 = opt_arg();
+            break;
+        case OPT_NEXTPROTONEG:
+# ifndef OPENSSL_NO_NEXTPROTONEG
+            next_proto_neg_in = opt_arg();
+#endif
+            break;
+        case OPT_ALPN:
+            alpn_in = opt_arg();
+            break;
+        case OPT_SRTP_PROFILES:
+#ifndef OPENSSL_NO_SRTP
+            srtp_profiles = opt_arg();
+#endif
+            break;
+        case OPT_KEYMATEXPORT:
+            keymatexportlabel = opt_arg();
+            break;
+        case OPT_KEYMATEXPORTLEN:
+            keymatexportlen = atoi(opt_arg());
+            break;
+        case OPT_ASYNC:
+            async = 1;
+            break;
+        case OPT_SPLIT_SEND_FRAG:
+            split_send_fragment = atoi(opt_arg());
+            if (split_send_fragment == 0) {
+                /*
+                 * Not allowed - set to a deliberately bad value so we get an
+                 * error message below
+                 */
+                split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH + 1;
+            }
+            break;
+        case OPT_MAX_PIPELINES:
+            max_pipelines = atoi(opt_arg());
+            break;
+        case OPT_READ_BUF:
+            read_buf_len = atoi(opt_arg());
+            break;
+
+        }
+    }
+    argc = opt_num_rest();
+    argv = opt_rest();
+
+#ifndef OPENSSL_NO_DTLS
+    if (www && socket_type == SOCK_DGRAM) {
+        BIO_printf(bio_err, "Can't use -HTTP, -www or -WWW with DTLS\n");
+        goto end;
+    }
+
+    if (dtlslisten && socket_type != SOCK_DGRAM) {
+        BIO_printf(bio_err, "Can only use -listen with DTLS\n");
+        goto end;
+    }
+#endif
+
+#ifdef AF_UNIX
+    if (socket_family == AF_UNIX && socket_type != SOCK_STREAM) {
+        BIO_printf(bio_err,
+                   "Can't use unix sockets and datagrams together\n");
+        goto end;
+    }
+#endif
+
+    if (split_send_fragment > SSL3_RT_MAX_PLAIN_LENGTH) {
+        BIO_printf(bio_err, "Bad split send fragment size\n");
+        goto end;
+    }
+
+    if (max_pipelines > SSL_MAX_PIPELINES) {
+        BIO_printf(bio_err, "Bad max pipelines value\n");
+        goto end;
+    }
+
+    if (!app_passwd(passarg, dpassarg, &pass, &dpass)) {
+        BIO_printf(bio_err, "Error getting password\n");
+        goto end;
+    }
+
+    if (s_key_file == NULL)
+        s_key_file = s_cert_file;
+
+    if (s_key_file2 == NULL)
+        s_key_file2 = s_cert_file2;
+
+    if (!load_excert(&exc))
+        goto end;
+
+    if (nocert == 0) {
+        s_key = load_key(s_key_file, s_key_format, 0, pass, engine,
+                         "server certificate private key file");
+        if (!s_key) {
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+
+        s_cert = load_cert(s_cert_file, s_cert_format,
+                           "server certificate file");
+
+        if (!s_cert) {
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+        if (s_chain_file) {
+            if (!load_certs(s_chain_file, &s_chain, FORMAT_PEM, NULL,
+                            "server certificate chain"))
+                goto end;
+        }
+
+        if (tlsextcbp.servername) {
+            s_key2 = load_key(s_key_file2, s_key_format, 0, pass, engine,
+                              "second server certificate private key file");
+            if (!s_key2) {
+                ERR_print_errors(bio_err);
+                goto end;
+            }
+
+            s_cert2 = load_cert(s_cert_file2, s_cert_format,
+                                "second server certificate file");
+
+            if (!s_cert2) {
+                ERR_print_errors(bio_err);
+                goto end;
+            }
+        }
+    }
+#if !defined(OPENSSL_NO_NEXTPROTONEG)
+    if (next_proto_neg_in) {
+        next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
+        if (next_proto.data == NULL)
+            goto end;
+    }
+#endif
+    alpn_ctx.data = NULL;
+    if (alpn_in) {
+        alpn_ctx.data = next_protos_parse(&alpn_ctx.len, alpn_in);
+        if (alpn_ctx.data == NULL)
+            goto end;
+    }
+
+    if (crl_file) {
+        X509_CRL *crl;
+        crl = load_crl(crl_file, crl_format);
+        if (!crl) {
+            BIO_puts(bio_err, "Error loading CRL\n");
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+        crls = sk_X509_CRL_new_null();
+        if (!crls || !sk_X509_CRL_push(crls, crl)) {
+            BIO_puts(bio_err, "Error adding CRL\n");
+            ERR_print_errors(bio_err);
+            X509_CRL_free(crl);
+            goto end;
+        }
+    }
+
+    if (s_dcert_file) {
+
+        if (s_dkey_file == NULL)
+            s_dkey_file = s_dcert_file;
+
+        s_dkey = load_key(s_dkey_file, s_dkey_format,
+                          0, dpass, engine, "second certificate private key file");
+        if (!s_dkey) {
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+
+        s_dcert = load_cert(s_dcert_file, s_dcert_format,
+                            "second server certificate file");
+
+        if (!s_dcert) {
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+        if (s_dchain_file) {
+            if (!load_certs(s_dchain_file, &s_dchain, FORMAT_PEM, NULL,
+                            "second server certificate chain"))
+                goto end;
+        }
+
+    }
+
+    if (!app_RAND_load_file(NULL, 1) && inrand == NULL
+        && !RAND_status()) {
+        BIO_printf(bio_err,
+                   "warning, not much extra random data, consider using the -rand option\n");
+    }
+    if (inrand != NULL)
+        BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
+                   app_RAND_load_files(inrand));
+
+    if (bio_s_out == NULL) {
+        if (s_quiet && !s_debug) {
+            bio_s_out = BIO_new(BIO_s_null());
+            if (s_msg && !bio_s_msg)
+                bio_s_msg = dup_bio_out(FORMAT_TEXT);
+        } else {
+            if (bio_s_out == NULL)
+                bio_s_out = dup_bio_out(FORMAT_TEXT);
+        }
+    }
+#if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_EC)
+    if (nocert)
+#endif
+    {
+        s_cert_file = NULL;
+        s_key_file = NULL;
+        s_dcert_file = NULL;
+        s_dkey_file = NULL;
+        s_cert_file2 = NULL;
+        s_key_file2 = NULL;
+    }
+
+    ctx = SSL_CTX_new(meth);
+    if (ctx == NULL) {
+        ERR_print_errors(bio_err);
+        goto end;
+    }
+    if (sdebug)
+        ssl_ctx_security_debug(ctx, sdebug);
+
+    if (!config_ctx(cctx, ssl_args, ctx))
+        goto end;
+
+    if (ssl_config) {
+        if (SSL_CTX_config(ctx, ssl_config) == 0) {
+            BIO_printf(bio_err, "Error using configuration \"%s\"\n",
+                       ssl_config);
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+    }
+    if (min_version != 0
+        && SSL_CTX_set_min_proto_version(ctx, min_version) == 0)
+        goto end;
+    if (max_version != 0
+        && SSL_CTX_set_max_proto_version(ctx, max_version) == 0)
+        goto end;
+
+    if (session_id_prefix) {
+        if (strlen(session_id_prefix) >= 32)
+            BIO_printf(bio_err,
+                       "warning: id_prefix is too long, only one new session will be possible\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", session_id_prefix);
+    }
+    SSL_CTX_set_quiet_shutdown(ctx, 1);
+    if (exc)
+        ssl_ctx_set_excert(ctx, exc);
+
+    if (state)
+        SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback);
+    if (no_cache)
+        SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
+    else if (ext_cache)
+        init_session_cache_ctx(ctx);
+    else
+        SSL_CTX_sess_set_cache_size(ctx, 128);
+
+    if (async) {
+        SSL_CTX_set_mode(ctx, SSL_MODE_ASYNC);
+    }
+    if (split_send_fragment > 0) {
+        SSL_CTX_set_split_send_fragment(ctx, split_send_fragment);
+    }
+    if (max_pipelines > 0) {
+        SSL_CTX_set_max_pipelines(ctx, max_pipelines);
+    }
+
+    if (read_buf_len > 0) {
+        SSL_CTX_set_default_read_buffer_len(ctx, read_buf_len);
+    }
+#ifndef OPENSSL_NO_SRTP
+    if (srtp_profiles != NULL) {
+        /* Returns 0 on success! */
+        if (SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles) != 0) {
+            BIO_printf(bio_err, "Error setting SRTP profile\n");
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+    }
+#endif
+
+    if (!ctx_set_verify_locations(ctx, CAfile, CApath, noCAfile, noCApath)) {
+        ERR_print_errors(bio_err);
+        goto end;
+    }
+    if (vpmtouched && !SSL_CTX_set1_param(ctx, vpm)) {
+        BIO_printf(bio_err, "Error setting verify params\n");
+        ERR_print_errors(bio_err);
+        goto end;
+    }
+
+    ssl_ctx_add_crls(ctx, crls, 0);
+
+    if (!ssl_load_stores(ctx, vfyCApath, vfyCAfile, chCApath, chCAfile,
+                         crls, crl_download)) {
+        BIO_printf(bio_err, "Error loading store locations\n");
+        ERR_print_errors(bio_err);
+        goto end;
+    }
+
+    if (s_cert2) {
+        ctx2 = SSL_CTX_new(meth);
+        if (ctx2 == NULL) {
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+    }
+
+    if (ctx2) {
+        BIO_printf(bio_s_out, "Setting secondary ctx parameters\n");
+
+        if (sdebug)
+            ssl_ctx_security_debug(ctx, sdebug);
+
+        if (session_id_prefix) {
+            if (strlen(session_id_prefix) >= 32)
+                BIO_printf(bio_err,
+                           "warning: id_prefix is too long, only one new session will be possible\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", session_id_prefix);
+        }
+        SSL_CTX_set_quiet_shutdown(ctx2, 1);
+        if (exc)
+            ssl_ctx_set_excert(ctx2, exc);
+
+        if (state)
+            SSL_CTX_set_info_callback(ctx2, apps_ssl_info_callback);
+
+        if (no_cache)
+            SSL_CTX_set_session_cache_mode(ctx2, SSL_SESS_CACHE_OFF);
+        else if (ext_cache)
+            init_session_cache_ctx(ctx2);
+        else
+            SSL_CTX_sess_set_cache_size(ctx2, 128);
+
+        if (async)
+            SSL_CTX_set_mode(ctx2, SSL_MODE_ASYNC);
+
+        if (!ctx_set_verify_locations(ctx2, CAfile, CApath, noCAfile,
+                                      noCApath)) {
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+        if (vpmtouched && !SSL_CTX_set1_param(ctx2, vpm)) {
+            BIO_printf(bio_err, "Error setting verify params\n");
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+
+        ssl_ctx_add_crls(ctx2, crls, 0);
+        if (!config_ctx(cctx, ssl_args, ctx2))
+            goto end;
+    }
+#ifndef OPENSSL_NO_NEXTPROTONEG
+    if (next_proto.data)
+        SSL_CTX_set_next_protos_advertised_cb(ctx, next_proto_cb,
+                                              &next_proto);
+#endif
+    if (alpn_ctx.data)
+        SSL_CTX_set_alpn_select_cb(ctx, alpn_cb, &alpn_ctx);
+
+#ifndef OPENSSL_NO_DH
+    if (!no_dhe) {
+        DH *dh = NULL;
+
+        if (dhfile)
+            dh = load_dh_param(dhfile);
+        else if (s_cert_file)
+            dh = load_dh_param(s_cert_file);
+
+        if (dh != NULL) {
+            BIO_printf(bio_s_out, "Setting temp DH parameters\n");
+        } else {
+            BIO_printf(bio_s_out, "Using default temp 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_puts(bio_err, "Error setting temp DH parameters\n");
+            ERR_print_errors(bio_err);
+            DH_free(dh);
+            goto end;
+        }
+
+        if (ctx2) {
+            if (!dhfile) {
+                DH *dh2 = load_dh_param(s_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_puts(bio_err, "Error setting temp DH parameters\n");
+                ERR_print_errors(bio_err);
+                DH_free(dh);
+                goto end;
+            }
+        }
+        DH_free(dh);
+    }
+#endif
+
+    if (!set_cert_key_stuff(ctx, s_cert, s_key, s_chain, build_chain))
+        goto end;
+
+    if (s_serverinfo_file != NULL
+        && !SSL_CTX_use_serverinfo_file(ctx, s_serverinfo_file)) {
+        ERR_print_errors(bio_err);
+        goto end;
+    }
+
+    if (ctx2 && !set_cert_key_stuff(ctx2, s_cert2, s_key2, NULL, build_chain))
+        goto end;
+
+    if (s_dcert != NULL) {
+        if (!set_cert_key_stuff(ctx, s_dcert, s_dkey, s_dchain, build_chain))
+            goto end;
+    }
+
+    if (no_resume_ephemeral) {
+        SSL_CTX_set_not_resumable_session_callback(ctx,
+                                                   not_resumable_sess_cb);
+
+        if (ctx2)
+            SSL_CTX_set_not_resumable_session_callback(ctx2,
+                                                       not_resumable_sess_cb);
+    }
+#ifndef OPENSSL_NO_PSK
+    if (psk_key != NULL) {
+        if (s_debug)
+            BIO_printf(bio_s_out, "PSK key given, setting server callback\n");
+        SSL_CTX_set_psk_server_callback(ctx, psk_server_cb);
+    }
+
+    if (!SSL_CTX_use_psk_identity_hint(ctx, psk_identity_hint)) {
+        BIO_printf(bio_err, "error setting PSK identity hint to context\n");
+        ERR_print_errors(bio_err);
+        goto end;
+    }
+#endif
+
+    SSL_CTX_set_verify(ctx, s_server_verify, verify_callback);
+    if (!SSL_CTX_set_session_id_context(ctx,
+                                        (void *)&s_server_session_id_context,
+                                        sizeof(s_server_session_id_context))) {
+        BIO_printf(bio_err, "error setting session id context\n");
+        ERR_print_errors(bio_err);
+        goto end;
+    }
+
+    /* 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, s_server_verify, verify_callback);
+        if (!SSL_CTX_set_session_id_context(ctx2,
+                    (void *)&s_server_session_id_context,
+                    sizeof(s_server_session_id_context))) {
+            BIO_printf(bio_err, "error setting session id context\n");
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+        tlsextcbp.biodebug = bio_s_out;
+        SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
+        SSL_CTX_set_tlsext_servername_arg(ctx2, &tlsextcbp);
+        SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
+        SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
+    }
+
+#ifndef OPENSSL_NO_SRP
+    if (srp_verifier_file != NULL) {
+        srp_callback_parm.vb = SRP_VBASE_new(srpuserseed);
+        srp_callback_parm.user = NULL;
+        srp_callback_parm.login = NULL;
+        if ((ret =
+             SRP_VBASE_init(srp_callback_parm.vb,
+                            srp_verifier_file)) != SRP_NO_ERROR) {
+            BIO_printf(bio_err,
+                       "Cannot initialize SRP verifier file \"%s\":ret=%d\n",
+                       srp_verifier_file, ret);
+            goto end;
+        }
+        SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, verify_callback);
+        SSL_CTX_set_srp_cb_arg(ctx, &srp_callback_parm);
+        SSL_CTX_set_srp_username_callback(ctx, ssl_srp_server_param_cb);
+    } else
+#endif
+    if (CAfile != NULL) {
+        SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file(CAfile));
+
+        if (ctx2)
+            SSL_CTX_set_client_CA_list(ctx2, SSL_load_client_CA_file(CAfile));
+    }
+#ifndef OPENSSL_NO_OCSP
+    if (s_tlsextstatus) {
+        SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb);
+        SSL_CTX_set_tlsext_status_arg(ctx, &tlscstatp);
+        if (ctx2) {
+            SSL_CTX_set_tlsext_status_cb(ctx2, cert_status_cb);
+            SSL_CTX_set_tlsext_status_arg(ctx2, &tlscstatp);
+        }
+    }
+#endif
+
+    BIO_printf(bio_s_out, "ACCEPT\n");
+    (void)BIO_flush(bio_s_out);
+    if (rev)
+        server_cb = rev_body;
+    else if (www)
+        server_cb = www_body;
+    else
+        server_cb = sv_body;
+#ifdef AF_UNIX
+    if (socket_family == AF_UNIX
+        && unlink_unix_path)
+        unlink(host);
+#endif
+    do_server(&accept_socket, host, port, socket_family, socket_type,
+              server_cb, context, naccept);
+    print_stats(bio_s_out, ctx);
+    ret = 0;
+ end:
+    SSL_CTX_free(ctx);
+    X509_free(s_cert);
+    sk_X509_CRL_pop_free(crls, X509_CRL_free);
+    X509_free(s_dcert);
+    EVP_PKEY_free(s_key);
+    EVP_PKEY_free(s_dkey);
+    sk_X509_pop_free(s_chain, X509_free);
+    sk_X509_pop_free(s_dchain, X509_free);
+    OPENSSL_free(pass);
+    OPENSSL_free(dpass);
+    OPENSSL_free(host);
+    OPENSSL_free(port);
+    X509_VERIFY_PARAM_free(vpm);
+    free_sessions();
+    OPENSSL_free(tlscstatp.host);
+    OPENSSL_free(tlscstatp.port);
+    OPENSSL_free(tlscstatp.path);
+    SSL_CTX_free(ctx2);
+    X509_free(s_cert2);
+    EVP_PKEY_free(s_key2);
+#ifndef OPENSSL_NO_NEXTPROTONEG
+    OPENSSL_free(next_proto.data);
+#endif
+    OPENSSL_free(alpn_ctx.data);
+    ssl_excert_free(exc);
+    sk_OPENSSL_STRING_free(ssl_args);
+    SSL_CONF_CTX_free(cctx);
+    release_engine(engine);
+    BIO_free(bio_s_out);
+    bio_s_out = NULL;
+    BIO_free(bio_s_msg);
+    bio_s_msg = NULL;
+#ifdef CHARSET_EBCDIC
+    BIO_meth_free(methods_ebcdic);
+#endif
+    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, int stype, unsigned char *context)
+{
+    char *buf = NULL;
+    fd_set readfds;
+    int ret = 1, width;
+    int k, i;
+    unsigned long l;
+    SSL *con = NULL;
+    BIO *sbio;
+    struct timeval timeout;
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
+    struct timeval tv;
+#else
+    struct timeval *timeoutp;
+#endif
+
+    buf = app_malloc(bufsize, "server buffer");
+    if (s_nbio) {
+        if (!BIO_socket_nbio(s, 1))
+            ERR_print_errors(bio_err);
+        else if (!s_quiet)
+            BIO_printf(bio_err, "Turned on non blocking io\n");
+    }
+
+    if (con == NULL) {
+        con = SSL_new(ctx);
+
+        if (s_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))) {
+            BIO_printf(bio_err, "Error setting session id context\n");
+            ret = -1;
+            goto err;
+        }
+    }
+    if (!SSL_clear(con)) {
+        BIO_printf(bio_err, "Error clearing SSL connection\n");
+        ret = -1;
+        goto err;
+    }
+#ifndef OPENSSL_NO_DTLS
+    if (stype == SOCK_DGRAM) {
+
+        sbio = BIO_new_dgram(s, BIO_NOCLOSE);
+
+        if (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 (socket_mtu) {
+            if (socket_mtu < DTLS_get_link_min_mtu(con)) {
+                BIO_printf(bio_err, "MTU too small. Must be at least %ld\n",
+                           DTLS_get_link_min_mtu(con));
+                ret = -1;
+                BIO_free(sbio);
+                goto err;
+            }
+            SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
+            if (!DTLS_set_link_mtu(con, socket_mtu)) {
+                BIO_printf(bio_err, "Failed to set MTU\n");
+                ret = -1;
+                BIO_free(sbio);
+                goto err;
+            }
+        } 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
+#endif
+        sbio = BIO_new_socket(s, BIO_NOCLOSE);
+
+    if (s_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 (s_debug) {
+        BIO_set_callback(SSL_get_rbio(con), bio_dump_callback);
+        BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
+    }
+    if (s_msg) {
+#ifndef OPENSSL_NO_SSL_TRACE
+        if (s_msg == 2)
+            SSL_set_msg_callback(con, SSL_trace);
+        else
+#endif
+            SSL_set_msg_callback(con, msg_cb);
+        SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
+    }
+
+    if (s_tlsextdebug) {
+        SSL_set_tlsext_debug_callback(con, tlsext_cb);
+        SSL_set_tlsext_debug_arg(con, bio_s_out);
+    }
+
+    if (fileno_stdin() > s)
+        width = fileno_stdin() + 1;
+    else
+        width = s + 1;
+    for (;;) {
+        int read_from_terminal;
+        int read_from_sslcon;
+
+        read_from_terminal = 0;
+        read_from_sslcon = SSL_has_pending(con)
+                           || (async && SSL_waiting_for_async(con));
+
+        if (!read_from_sslcon) {
+            FD_ZERO(&readfds);
+#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS)
+            openssl_fdset(fileno_stdin(), &readfds);
+#endif
+            openssl_fdset(s, &readfds);
+            /*
+             * Note: under VMS with SOCKETSHR the second parameter is
+             * currently of type (int *) whereas under other systems it is
+             * (void *) if you don't have a cast it will choke the compiler:
+             * if you do have a cast then you can either go for (int *) or
+             * (void *).
+             */
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
+            /*
+             * Under DOS (non-djgpp) and Windows we can't select on stdin:
+             * only on sockets. As a workaround we timeout the select every
+             * second and check for any keypress. In a proper Windows
+             * application we wouldn't do this because it is inefficient.
+             */
+            tv.tv_sec = 1;
+            tv.tv_usec = 0;
+            i = select(width, (void *)&readfds, NULL, NULL, &tv);
+            if (has_stdin_waiting())
+                read_from_terminal = 1;
+            if ((i < 0) || (!i && !read_from_terminal))
+                continue;
+#else
+            if ((SSL_version(con) == DTLS1_VERSION) &&
+                DTLSv1_get_timeout(con, &timeout))
+                timeoutp = &timeout;
+            else
+                timeoutp = NULL;
+
+            i = select(width, (void *)&readfds, NULL, NULL, timeoutp);
+
+            if ((SSL_version(con) == DTLS1_VERSION)
+                && DTLSv1_handle_timeout(con) > 0) {
+                BIO_printf(bio_err, "TIMEOUT occurred\n");
+            }
+
+            if (i <= 0)
+                continue;
+            if (FD_ISSET(fileno_stdin(), &readfds))
+                read_from_terminal = 1;
+#endif
+            if (FD_ISSET(s, &readfds))
+                read_from_sslcon = 1;
+        }
+        if (read_from_terminal) {
+            if (s_crlf) {
+                int j, lf_num;
+
+                i = raw_read_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 = raw_read_stdin(buf, bufsize);
+
+            if (!s_quiet && !s_brief) {
+                if ((i <= 0) || (buf[0] == 'Q')) {
+                    BIO_printf(bio_s_out, "DONE\n");
+                    (void)BIO_flush(bio_s_out);
+                    BIO_closesocket(s);
+                    close_accept_socket();
+                    ret = -11;
+                    goto err;
+                }
+                if ((i <= 0) || (buf[0] == 'q')) {
+                    BIO_printf(bio_s_out, "DONE\n");
+                    (void)BIO_flush(bio_s_out);
+                    if (SSL_version(con) != DTLS1_VERSION)
+                        BIO_closesocket(s);
+                    /*
+                     * close_accept_socket(); ret= -11;
+                     */
+                    goto err;
+                }
+#ifndef OPENSSL_NO_HEARTBEATS
+                if ((buf[0] == 'B') && ((buf[1] == '\n') || (buf[1] == '\r'))) {
+                    BIO_printf(bio_err, "HEARTBEATING\n");
+                    SSL_heartbeat(con);
+                    i = 0;
+                    continue;
+                }
+#endif
+                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;
+                    /*
+                     * strcpy(buf,"server side 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;
+                    /*
+                     * strcpy(buf,"server side 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));
+                }
+            }
+#ifdef CHARSET_EBCDIC
+            ebcdic2ascii(buf, buf, i);
+#endif
+            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);
+#ifndef OPENSSL_NO_SRP
+                while (SSL_get_error(con, k) == SSL_ERROR_WANT_X509_LOOKUP) {
+                    BIO_printf(bio_s_out, "LOOKUP renego during write\n");
+                    SRP_user_pwd_free(srp_callback_parm.user);
+                    srp_callback_parm.user =
+                        SRP_VBASE_get1_by_user(srp_callback_parm.vb,
+                                               srp_callback_parm.login);
+                    if (srp_callback_parm.user)
+                        BIO_printf(bio_s_out, "LOOKUP done %s\n",
+                                   srp_callback_parm.user->info);
+                    else
+                        BIO_printf(bio_s_out, "LOOKUP not successful\n");
+                    k = SSL_write(con, &(buf[l]), (unsigned int)i);
+                }
+#endif
+                switch (SSL_get_error(con, k)) {
+                case SSL_ERROR_NONE:
+                    break;
+                case SSL_ERROR_WANT_ASYNC:
+                    BIO_printf(bio_s_out, "Write BLOCK (Async)\n");
+                    (void)BIO_flush(bio_s_out);
+                    wait_for_async(con);
+                    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");
+                    (void)BIO_flush(bio_s_out);
+                    break;
+                case SSL_ERROR_WANT_ASYNC_JOB:
+                    /*
+                     * This shouldn't ever happen in s_server. Treat as an error
+                     */
+                case SSL_ERROR_SYSCALL:
+                case SSL_ERROR_SSL:
+                    BIO_printf(bio_s_out, "ERROR\n");
+                    (void)BIO_flush(bio_s_out);
+                    ERR_print_errors(bio_err);
+                    ret = 1;
+                    goto err;
+                    /* break; */
+                case SSL_ERROR_ZERO_RETURN:
+                    BIO_printf(bio_s_out, "DONE\n");
+                    (void)BIO_flush(bio_s_out);
+                    ret = 1;
+                    goto err;
+                }
+                if (k > 0) {
+                    l += k;
+                    i -= k;
+                }
+                if (i <= 0)
+                    break;
+            }
+        }
+        if (read_from_sslcon) {
+            /*
+             * init_ssl_connection handles all async events itself so if we're
+             * waiting for async then we shouldn't go back into
+             * init_ssl_connection
+             */
+            if ((!async || !SSL_waiting_for_async(con))
+                    && !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);
+#ifndef OPENSSL_NO_SRP
+                while (SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
+                    BIO_printf(bio_s_out, "LOOKUP renego during read\n");
+                    SRP_user_pwd_free(srp_callback_parm.user);
+                    srp_callback_parm.user =
+                        SRP_VBASE_get1_by_user(srp_callback_parm.vb,
+                                               srp_callback_parm.login);
+                    if (srp_callback_parm.user)
+                        BIO_printf(bio_s_out, "LOOKUP done %s\n",
+                                   srp_callback_parm.user->info);
+                    else
+                        BIO_printf(bio_s_out, "LOOKUP not successful\n");
+                    i = SSL_read(con, (char *)buf, bufsize);
+                }
+#endif
+                switch (SSL_get_error(con, i)) {
+                case SSL_ERROR_NONE:
+#ifdef CHARSET_EBCDIC
+                    ascii2ebcdic(buf, buf, i);
+#endif
+                    raw_write_stdout(buf, (unsigned int)i);
+                    (void)BIO_flush(bio_s_out);
+                    if (SSL_has_pending(con))
+                        goto again;
+                    break;
+                case SSL_ERROR_WANT_ASYNC:
+                    BIO_printf(bio_s_out, "Read BLOCK (Async)\n");
+                    (void)BIO_flush(bio_s_out);
+                    wait_for_async(con);
+                    break;
+                case SSL_ERROR_WANT_WRITE:
+                case SSL_ERROR_WANT_READ:
+                    BIO_printf(bio_s_out, "Read BLOCK\n");
+                    (void)BIO_flush(bio_s_out);
+                    break;
+                case SSL_ERROR_WANT_ASYNC_JOB:
+                    /*
+                     * This shouldn't ever happen in s_server. Treat as an error
+                     */
+                case SSL_ERROR_SYSCALL:
+                case SSL_ERROR_SSL:
+                    BIO_printf(bio_s_out, "ERROR\n");
+                    (void)BIO_flush(bio_s_out);
+                    ERR_print_errors(bio_err);
+                    ret = 1;
+                    goto err;
+                case SSL_ERROR_ZERO_RETURN:
+                    BIO_printf(bio_s_out, "DONE\n");
+                    (void)BIO_flush(bio_s_out);
+                    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");
+    OPENSSL_clear_free(buf, bufsize);
+    if (ret >= 0)
+        BIO_printf(bio_s_out, "ACCEPT\n");
+    (void)BIO_flush(bio_s_out);
+    return (ret);
+}
+
+static void close_accept_socket(void)
+{
+    BIO_printf(bio_err, "shutdown accept socket\n");
+    if (accept_socket >= 0) {
+        BIO_closesocket(accept_socket);
+    }
+}
+
+static int init_ssl_connection(SSL *con)
+{
+    int i;
+    const char *str;
+    X509 *peer;
+    long verify_err;
+    char buf[BUFSIZ];
+#if !defined(OPENSSL_NO_NEXTPROTONEG)
+    const unsigned char *next_proto_neg;
+    unsigned next_proto_neg_len;
+#endif
+    unsigned char *exportedkeymat;
+    int retry = 0;
+
+#ifndef OPENSSL_NO_DTLS
+    if (dtlslisten) {
+        BIO_ADDR *client = NULL;
+
+        if ((client = BIO_ADDR_new()) == NULL) {
+            BIO_printf(bio_err, "ERROR - memory\n");
+            return 0;
+        }
+        i = DTLSv1_listen(con, client);
+        if (i > 0) {
+            BIO *wbio;
+            int fd = -1;
+
+            wbio = SSL_get_wbio(con);
+            if (wbio) {
+                BIO_get_fd(wbio, &fd);
+            }
+
+            if (!wbio || BIO_connect(fd, client, 0) == 0) {
+                BIO_printf(bio_err, "ERROR - unable to connect\n");
+                BIO_ADDR_free(client);
+                return 0;
+            }
+            BIO_ADDR_free(client);
+            dtlslisten = 0;
+            i = SSL_accept(con);
+        } else {
+            BIO_ADDR_free(client);
+        }
+    } else
+#endif
+
+    do {
+        i = SSL_accept(con);
+
+        if (i <= 0)
+            retry = BIO_sock_should_retry(i);
+#ifdef CERT_CB_TEST_RETRY
+        {
+            while (i <= 0
+                    && SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP
+                    && SSL_get_state(con) == TLS_ST_SR_CLNT_HELLO) {
+                BIO_printf(bio_err,
+                           "LOOKUP from certificate callback during accept\n");
+                i = SSL_accept(con);
+                if (i <= 0)
+                    retry = BIO_sock_should_retry(i);
+            }
+        }
+#endif
+
+#ifndef OPENSSL_NO_SRP
+        while (i <= 0
+               && SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
+            BIO_printf(bio_s_out, "LOOKUP during accept %s\n",
+                       srp_callback_parm.login);
+            SRP_user_pwd_free(srp_callback_parm.user);
+            srp_callback_parm.user =
+                SRP_VBASE_get1_by_user(srp_callback_parm.vb,
+                                       srp_callback_parm.login);
+            if (srp_callback_parm.user)
+                BIO_printf(bio_s_out, "LOOKUP done %s\n",
+                           srp_callback_parm.user->info);
+            else
+                BIO_printf(bio_s_out, "LOOKUP not successful\n");
+            i = SSL_accept(con);
+            if (i <= 0)
+                retry = BIO_sock_should_retry(i);
+        }
+#endif
+    } while (i < 0 && SSL_waiting_for_async(con));
+
+    if (i <= 0) {
+        if ((dtlslisten && i == 0)
+                || (!dtlslisten && retry)) {
+            BIO_printf(bio_s_out, "DELAY\n");
+            return (1);
+        }
+
+        BIO_printf(bio_err, "ERROR\n");
+
+        verify_err = SSL_get_verify_result(con);
+        if (verify_err != X509_V_OK) {
+            BIO_printf(bio_err, "verify error:%s\n",
+                       X509_verify_cert_error_string(verify_err));
+        }
+        /* Always print any error messages */
+        ERR_print_errors(bio_err);
+        return (0);
+    }
+
+    if (s_brief)
+        print_ssl_summary(con);
+
+    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);
+        peer = NULL;
+    }
+
+    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));
+    ssl_print_sigalgs(bio_s_out, con);
+#ifndef OPENSSL_NO_EC
+    ssl_print_point_formats(bio_s_out, con);
+    ssl_print_curves(bio_s_out, con, 0);
+#endif
+    BIO_printf(bio_s_out, "CIPHER is %s\n", (str != NULL) ? str : "(NONE)");
+
+#if !defined(OPENSSL_NO_NEXTPROTONEG)
+    SSL_get0_next_proto_negotiated(con, &next_proto_neg, &next_proto_neg_len);
+    if (next_proto_neg) {
+        BIO_printf(bio_s_out, "NEXTPROTO is ");
+        BIO_write(bio_s_out, next_proto_neg, next_proto_neg_len);
+        BIO_printf(bio_s_out, "\n");
+    }
+#endif
+#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_session_reused(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 ((SSL_get_options(con) & SSL_OP_NO_RENEGOTIATION))
+        BIO_printf(bio_s_out, "Renegotiation is DISABLED\n");
+
+    if (keymatexportlabel != NULL) {
+        BIO_printf(bio_s_out, "Keying material exporter:\n");
+        BIO_printf(bio_s_out, "    Label: '%s'\n", keymatexportlabel);
+        BIO_printf(bio_s_out, "    Length: %i bytes\n", keymatexportlen);
+        exportedkeymat = app_malloc(keymatexportlen, "export key");
+        if (!SSL_export_keying_material(con, exportedkeymat,
+                                        keymatexportlen,
+                                        keymatexportlabel,
+                                        strlen(keymatexportlabel),
+                                        NULL, 0, 0)) {
+            BIO_printf(bio_s_out, "    Error\n");
+        } else {
+            BIO_printf(bio_s_out, "    Keying material: ");
+            for (i = 0; i < keymatexportlen; i++)
+                BIO_printf(bio_s_out, "%02X", exportedkeymat[i]);
+            BIO_printf(bio_s_out, "\n");
+        }
+        OPENSSL_free(exportedkeymat);
+    }
+
+    (void)BIO_flush(bio_s_out);
+    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, int stype, 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;
+#ifdef RENEG
+    int total_bytes = 0;
+#endif
+    int width;
+    fd_set readfds;
+
+    /* Set width for a select call if needed */
+    width = s + 1;
+
+    buf = app_malloc(bufsize, "server www buffer");
+    io = BIO_new(BIO_f_buffer());
+    ssl_bio = BIO_new(BIO_f_ssl());
+    if ((io == NULL) || (ssl_bio == NULL))
+        goto err;
+
+    if (s_nbio) {
+        if (!BIO_socket_nbio(s, 1))
+            ERR_print_errors(bio_err);
+        else if (!s_quiet)
+            BIO_printf(bio_err, "Turned on non blocking io\n");
+    }
+
+    /* 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 (s_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)))
+        goto err;
+
+    sbio = BIO_new_socket(s, BIO_NOCLOSE);
+    if (s_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);
+#ifdef CHARSET_EBCDIC
+    io = BIO_push(BIO_new(BIO_f_ebcdic_filter()), io);
+#endif
+
+    if (s_debug) {
+        BIO_set_callback(SSL_get_rbio(con), bio_dump_callback);
+        BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
+    }
+    if (s_msg) {
+#ifndef OPENSSL_NO_SSL_TRACE
+        if (s_msg == 2)
+            SSL_set_msg_callback(con, SSL_trace);
+        else
+#endif
+            SSL_set_msg_callback(con, msg_cb);
+        SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
+    }
+
+    for (;;) {
+        i = BIO_gets(io, buf, bufsize - 1);
+        if (i < 0) {            /* error */
+            if (!BIO_should_retry(io) && !SSL_waiting_for_async(con)) {
+                if (!s_quiet)
+                    ERR_print_errors(bio_err);
+                goto err;
+            } else {
+                BIO_printf(bio_s_out, "read R BLOCK\n");
+#ifndef OPENSSL_NO_SRP
+                if (BIO_should_io_special(io)
+                    && BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
+                    BIO_printf(bio_s_out, "LOOKUP renego during read\n");
+                    SRP_user_pwd_free(srp_callback_parm.user);
+                    srp_callback_parm.user =
+                        SRP_VBASE_get1_by_user(srp_callback_parm.vb,
+                                               srp_callback_parm.login);
+                    if (srp_callback_parm.user)
+                        BIO_printf(bio_s_out, "LOOKUP done %s\n",
+                                   srp_callback_parm.user->info);
+                    else
+                        BIO_printf(bio_s_out, "LOOKUP not successful\n");
+                    continue;
+                }
+#endif
+#if !defined(OPENSSL_SYS_MSDOS)
+                sleep(1);
+#endif
+                continue;
+            }
+        } else if (i == 0) {    /* end of input */
+            ret = 1;
+            goto end;
+        }
+
+        /* else we have data */
+        if (((www == 1) && (strncmp("GET ", buf, 4) == 0)) ||
+            ((www == 2) && (strncmp("GET /stats ", buf, 11) == 0))) {
+            char *p;
+            X509 *peer = NULL;
+            STACK_OF(SSL_CIPHER) *sk;
+            static const char *space = "                          ";
+
+            if (www == 1 && strncmp("GET /reneg", buf, 10) == 0) {
+                if (strncmp("GET /renegcert", buf, 14) == 0)
+                    SSL_set_verify(con,
+                                   SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE,
+                                   NULL);
+                i = SSL_renegotiate(con);
+                BIO_printf(bio_s_out, "SSL_renegotiate -> %d\n", i);
+                /* Send the HelloRequest */
+                i = SSL_do_handshake(con);
+                if (i <= 0) {
+                    BIO_printf(bio_s_out, "SSL_do_handshake() Retval %d\n",
+                               SSL_get_error(con, i));
+                    ERR_print_errors(bio_err);
+                    goto err;
+                }
+                /* Wait for a ClientHello to come back */
+                FD_ZERO(&readfds);
+                openssl_fdset(s, &readfds);
+                i = select(width, (void *)&readfds, NULL, NULL, NULL);
+                if (i <= 0 || !FD_ISSET(s, &readfds)) {
+                    BIO_printf(bio_s_out,
+                               "Error waiting for client response\n");
+                    ERR_print_errors(bio_err);
+                    goto err;
+                }
+                /*
+                 * We're not actually expecting any data here and we ignore
+                 * any that is sent. This is just to force the handshake that
+                 * we're expecting to come from the client. If they haven't
+                 * sent one there's not much we can do.
+                 */
+                BIO_gets(io, buf, bufsize - 1);
+            }
+
+            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, OpenSSL_version(OPENSSL_VERSION)); */
+            BIO_puts(io, "\n");
+            for (i = 0; i < local_argc; i++) {
+                const char *myp;
+                for (myp = local_argv[i]; *myp; myp++)
+                    switch (*myp) {
+                    case '<':
+                        BIO_puts(io, "&lt;");
+                        break;
+                    case '>':
+                        BIO_puts(io, "&gt;");
+                        break;
+                    case '&':
+                        BIO_puts(io, "&amp;");
+                        break;
+                    default:
+                        BIO_write(io, myp, 1);
+                        break;
+                    }
+                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");
+            }
+            ssl_print_sigalgs(io, con);
+#ifndef OPENSSL_NO_EC
+            ssl_print_curves(io, con, 0);
+#endif
+            BIO_printf(io, (SSL_session_reused(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);
+                X509_free(peer);
+                peer = NULL;
+            } else {
+                BIO_puts(io, "no client certificate available\n");
+            }
+            BIO_puts(io, "</pre></BODY></HTML>\r\n\r\n");
+            break;
+        } else if ((www == 2 || 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] == '/') ? -1 : 0;
+                    break;
+                }
+                if (dot == 0)
+                    dot = (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 (!s_quiet)
+                BIO_printf(bio_err, "FILE:%s\n", p);
+
+            if (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;
+                BIO_printf(bio_err, "%d\n", i);
+                if (total_bytes > 3 * 1024) {
+                    total_bytes = 0;
+                    BIO_printf(bio_err, "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)
+                            && !SSL_waiting_for_async(con))
+                            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");
+    OPENSSL_free(buf);
+    BIO_free_all(io);
+    return (ret);
+}
+
+static int rev_body(int s, int stype, unsigned char *context)
+{
+    char *buf = NULL;
+    int i;
+    int ret = 1;
+    SSL *con;
+    BIO *io, *ssl_bio, *sbio;
+
+    buf = app_malloc(bufsize, "server rev buffer");
+    io = BIO_new(BIO_f_buffer());
+    ssl_bio = BIO_new(BIO_f_ssl());
+    if ((io == NULL) || (ssl_bio == NULL))
+        goto 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 (s_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))) {
+        ERR_print_errors(bio_err);
+        goto err;
+    }
+
+    sbio = BIO_new_socket(s, BIO_NOCLOSE);
+    SSL_set_bio(con, sbio, sbio);
+    SSL_set_accept_state(con);
+
+    BIO_set_ssl(ssl_bio, con, BIO_CLOSE);
+    BIO_push(io, ssl_bio);
+#ifdef CHARSET_EBCDIC
+    io = BIO_push(BIO_new(BIO_f_ebcdic_filter()), io);
+#endif
+
+    if (s_debug) {
+        BIO_set_callback(SSL_get_rbio(con), bio_dump_callback);
+        BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
+    }
+    if (s_msg) {
+#ifndef OPENSSL_NO_SSL_TRACE
+        if (s_msg == 2)
+            SSL_set_msg_callback(con, SSL_trace);
+        else
+#endif
+            SSL_set_msg_callback(con, msg_cb);
+        SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
+    }
+
+    for (;;) {
+        i = BIO_do_handshake(io);
+        if (i > 0)
+            break;
+        if (!BIO_should_retry(io)) {
+            BIO_puts(bio_err, "CONNECTION FAILURE\n");
+            ERR_print_errors(bio_err);
+            goto end;
+        }
+#ifndef OPENSSL_NO_SRP
+        if (BIO_should_io_special(io)
+            && BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
+            BIO_printf(bio_s_out, "LOOKUP renego during accept\n");
+            SRP_user_pwd_free(srp_callback_parm.user);
+            srp_callback_parm.user =
+                SRP_VBASE_get1_by_user(srp_callback_parm.vb,
+                                       srp_callback_parm.login);
+            if (srp_callback_parm.user)
+                BIO_printf(bio_s_out, "LOOKUP done %s\n",
+                           srp_callback_parm.user->info);
+            else
+                BIO_printf(bio_s_out, "LOOKUP not successful\n");
+            continue;
+        }
+#endif
+    }
+    BIO_printf(bio_err, "CONNECTION ESTABLISHED\n");
+    print_ssl_summary(con);
+
+    for (;;) {
+        i = BIO_gets(io, buf, bufsize - 1);
+        if (i < 0) {            /* error */
+            if (!BIO_should_retry(io)) {
+                if (!s_quiet)
+                    ERR_print_errors(bio_err);
+                goto err;
+            } else {
+                BIO_printf(bio_s_out, "read R BLOCK\n");
+#ifndef OPENSSL_NO_SRP
+                if (BIO_should_io_special(io)
+                    && BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
+                    BIO_printf(bio_s_out, "LOOKUP renego during read\n");
+                    SRP_user_pwd_free(srp_callback_parm.user);
+                    srp_callback_parm.user =
+                        SRP_VBASE_get1_by_user(srp_callback_parm.vb,
+                                               srp_callback_parm.login);
+                    if (srp_callback_parm.user)
+                        BIO_printf(bio_s_out, "LOOKUP done %s\n",
+                                   srp_callback_parm.user->info);
+                    else
+                        BIO_printf(bio_s_out, "LOOKUP not successful\n");
+                    continue;
+                }
+#endif
+#if !defined(OPENSSL_SYS_MSDOS)
+                sleep(1);
+#endif
+                continue;
+            }
+        } else if (i == 0) {    /* end of input */
+            ret = 1;
+            BIO_printf(bio_err, "CONNECTION CLOSED\n");
+            goto end;
+        } else {
+            char *p = buf + i - 1;
+            while (i && (*p == '\n' || *p == '\r')) {
+                p--;
+                i--;
+            }
+            if (!s_ign_eof && (i == 5) && (strncmp(buf, "CLOSE", 5) == 0)) {
+                ret = 1;
+                BIO_printf(bio_err, "CONNECTION CLOSED\n");
+                goto end;
+            }
+            BUF_reverse((unsigned char *)buf, NULL, i);
+            buf[i] = '\n';
+            BIO_write(io, buf, i + 1);
+            for (;;) {
+                i = BIO_flush(io);
+                if (i > 0)
+                    break;
+                if (!BIO_should_retry(io))
+                    goto end;
+            }
+        }
+    }
+ end:
+    /* make sure we re-use sessions */
+    SSL_set_shutdown(con, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);
+
+ err:
+
+    OPENSSL_free(buf);
+    BIO_free_all(io);
+    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 {
+        if (RAND_bytes(id, *id_len) <= 0)
+            return 0;
+        /*
+         * 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, session_id_prefix,
+               (strlen(session_id_prefix) < *id_len) ?
+               strlen(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;
+}
+
+/*
+ * By default s_server uses an in-memory cache which caches SSL_SESSION
+ * structures without any serialisation. This hides some bugs which only
+ * become apparent in deployed servers. By implementing a basic external
+ * session cache some issues can be debugged using s_server.
+ */
+
+typedef struct simple_ssl_session_st {
+    unsigned char *id;
+    unsigned int idlen;
+    unsigned char *der;
+    int derlen;
+    struct simple_ssl_session_st *next;
+} simple_ssl_session;
+
+static simple_ssl_session *first = NULL;
+
+static int add_session(SSL *ssl, SSL_SESSION *session)
+{
+    simple_ssl_session *sess = app_malloc(sizeof(*sess), "get session");
+    unsigned char *p;
+
+    SSL_SESSION_get_id(session, &sess->idlen);
+    sess->derlen = i2d_SSL_SESSION(session, NULL);
+    if (sess->derlen < 0) {
+        BIO_printf(bio_err, "Error encoding session\n");
+        OPENSSL_free(sess);
+        return 0;
+    }
+
+    sess->id = OPENSSL_memdup(SSL_SESSION_get_id(session, NULL), sess->idlen);
+    sess->der = app_malloc(sess->derlen, "get session buffer");
+    if (!sess->id) {
+        BIO_printf(bio_err, "Out of memory adding to external cache\n");
+        OPENSSL_free(sess->id);
+        OPENSSL_free(sess->der);
+        OPENSSL_free(sess);
+        return 0;
+    }
+    p = sess->der;
+
+    /* Assume it still works. */
+    if (i2d_SSL_SESSION(session, &p) != sess->derlen) {
+        BIO_printf(bio_err, "Unexpected session encoding length\n");
+        OPENSSL_free(sess->id);
+        OPENSSL_free(sess->der);
+        OPENSSL_free(sess);
+        return 0;
+    }
+
+    sess->next = first;
+    first = sess;
+    BIO_printf(bio_err, "New session added to external cache\n");
+    return 0;
+}
+
+static SSL_SESSION *get_session(SSL *ssl, const unsigned char *id, int idlen,
+                                int *do_copy)
+{
+    simple_ssl_session *sess;
+    *do_copy = 0;
+    for (sess = first; sess; sess = sess->next) {
+        if (idlen == (int)sess->idlen && !memcmp(sess->id, id, idlen)) {
+            const unsigned char *p = sess->der;
+            BIO_printf(bio_err, "Lookup session: cache hit\n");
+            return d2i_SSL_SESSION(NULL, &p, sess->derlen);
+        }
+    }
+    BIO_printf(bio_err, "Lookup session: cache miss\n");
+    return NULL;
+}
+
+static void del_session(SSL_CTX *sctx, SSL_SESSION *session)
+{
+    simple_ssl_session *sess, *prev = NULL;
+    const unsigned char *id;
+    unsigned int idlen;
+    id = SSL_SESSION_get_id(session, &idlen);
+    for (sess = first; sess; sess = sess->next) {
+        if (idlen == sess->idlen && !memcmp(sess->id, id, idlen)) {
+            if (prev)
+                prev->next = sess->next;
+            else
+                first = sess->next;
+            OPENSSL_free(sess->id);
+            OPENSSL_free(sess->der);
+            OPENSSL_free(sess);
+            return;
+        }
+        prev = sess;
+    }
+}
+
+static void init_session_cache_ctx(SSL_CTX *sctx)
+{
+    SSL_CTX_set_session_cache_mode(sctx,
+                                   SSL_SESS_CACHE_NO_INTERNAL |
+                                   SSL_SESS_CACHE_SERVER);
+    SSL_CTX_sess_set_new_cb(sctx, add_session);
+    SSL_CTX_sess_set_get_cb(sctx, get_session);
+    SSL_CTX_sess_set_remove_cb(sctx, del_session);
+}
+
+static void free_sessions(void)
+{
+    simple_ssl_session *sess, *tsess;
+    for (sess = first; sess;) {
+        OPENSSL_free(sess->id);
+        OPENSSL_free(sess->der);
+        tsess = sess;
+        sess = sess->next;
+        OPENSSL_free(tsess);
+    }
+    first = NULL;
+}
+
+#endif                          /* OPENSSL_NO_SOCK */