indent has problems with comments that are on the right hand side of a line.
[oweals/openssl.git] / apps / s_server.c
index febe6d81f9d5c446fe3fef227a9f528c02d08e8a..d824a838d48d4e1b70e9ba20738e9552d09dfa05 100644 (file)
@@ -204,15 +204,17 @@ typedef unsigned int u_int;
 #ifndef OPENSSL_NO_RSA
 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);
 #endif
-static int sv_body(char *hostname, int s, unsigned char *context);
-static int www_body(char *hostname, int s, unsigned char *context);
-static int rev_body(char *hostname, int s, unsigned char *context);
+static int sv_body(char *hostname, int s, int stype, unsigned char *context);
+static int www_body(char *hostname, int s, int stype, unsigned char *context);
+static int rev_body(char *hostname, int s, int stype, unsigned char *context);
 static void close_accept_socket(void );
 static void sv_usage(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);
 static DH *get_dh512(void);
@@ -294,6 +296,7 @@ static int cert_status_cb(SSL *s, void *arg);
 static int no_resume_ephemeral = 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;
@@ -312,10 +315,9 @@ static int cert_chain = 0;
 #endif
 
 #ifndef OPENSSL_NO_TLSEXT
-static BIO *authz_in = NULL;
-static const char *s_authz_file = NULL;
 static BIO *serverinfo_in = NULL;
 static const char *s_serverinfo_file = NULL;
+
 #endif
 
 #ifndef OPENSSL_NO_PSK
@@ -471,15 +473,21 @@ static void sv_usage(void)
        BIO_printf(bio_err,"usage: s_server [args ...]\n");
        BIO_printf(bio_err,"\n");
        BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
+       BIO_printf(bio_err," -verify_host host - check peer certificate matches \"host\"\n");
+       BIO_printf(bio_err," -verify_email email - check peer certificate matches \"email\"\n");
+       BIO_printf(bio_err," -verify_ip ipaddr - check peer certificate matches \"ipaddr\"\n");
        BIO_printf(bio_err," -context arg  - set session ID context\n");
        BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
        BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
+       BIO_printf(bio_err," -verify_return_error - return verification errors\n");
        BIO_printf(bio_err," -cert arg     - certificate file to use\n");
        BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
-       BIO_printf(bio_err," -authz arg   -  binary authz file for certificate\n");
 #ifndef OPENSSL_NO_TLSEXT
        BIO_printf(bio_err," -serverinfo arg - PEM serverinfo file for certificate\n");
+       BIO_printf(bio_err," -auth               - send and receive RFC 5878 TLS auth extensions and supplemental data\n");
+       BIO_printf(bio_err," -auth_require_reneg - Do not send TLS auth extensions until renegotiation\n");
 #endif
+       BIO_printf(bio_err," -no_resumption_on_reneg - set SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION flag\n");
        BIO_printf(bio_err," -crl_check    - check the peer certificate has not been revoked by its CA.\n" \
                           "                 The CRL(s) are appended to the certificate file\n");
        BIO_printf(bio_err," -crl_check_all - check the peer certificate has not been revoked by its CA\n" \
@@ -529,11 +537,14 @@ static void sv_usage(void)
        BIO_printf(bio_err," -srpuserseed string - A seed string for a default user salt.\n");
 #endif
        BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
+#ifndef OPENSSL_NO_SSL3_METHOD
        BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
+#endif
        BIO_printf(bio_err," -tls1_2       - Just talk TLSv1.2\n");
        BIO_printf(bio_err," -tls1_1       - Just talk TLSv1.1\n");
        BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
        BIO_printf(bio_err," -dtls1        - Just talk DTLSv1\n");
+       BIO_printf(bio_err," -dtls1_2      - Just talk DTLSv1.2\n");
        BIO_printf(bio_err," -timeout      - Enable timeouts\n");
        BIO_printf(bio_err," -mtu          - Set link layer MTU\n");
        BIO_printf(bio_err," -chain        - Read a certificate chain\n");
@@ -549,6 +560,7 @@ static void sv_usage(void)
        BIO_printf(bio_err," -no_ecdhe     - Disable ephemeral ECDH\n");
 #endif
        BIO_printf(bio_err," -bugs         - Turn on SSL bug compatibility\n");
+       BIO_printf(bio_err," -hack         - workaround for early Netscape code\n");
        BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
        BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
        BIO_printf(bio_err," -HTTP         - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
@@ -571,10 +583,17 @@ static void sv_usage(void)
 # ifndef OPENSSL_NO_NEXTPROTONEG
        BIO_printf(bio_err," -nextprotoneg arg - set the advertised protocols for the NPN extension (comma-separated list)\n");
 # endif
+# ifndef OPENSSL_NO_SRTP
         BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
+# endif
+       BIO_printf(bio_err," -alpn arg  - set the advertised protocols for the ALPN extension (comma-separated list)\n");
 #endif
        BIO_printf(bio_err," -keymatexport label   - Export keying material using label\n");
        BIO_printf(bio_err," -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
+       BIO_printf(bio_err," -status           - respond to certificate status requests\n");
+       BIO_printf(bio_err," -status_verbose   - enable status request verbose printout\n");
+       BIO_printf(bio_err," -status_timeout n - status request responder timeout\n");
+       BIO_printf(bio_err," -status_url URL   - status request fallback URL\n");
        }
 
 static int local_argc=0;
@@ -752,7 +771,7 @@ static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
        
        if (servername)
                {
-               if (strcmp(servername,p->servername)) 
+               if (strcasecmp(servername,p->servername)) 
                        return p->extension_error;
                if (ctx2)
                        {
@@ -927,8 +946,47 @@ static int next_proto_cb(SSL *s, const unsigned char **data, unsigned int *len,
        }
 # endif  /* ndef OPENSSL_NO_NEXTPROTONEG */
 
+/* This the context that we pass to alpn_cb */
+typedef struct tlsextalpnctx_st {
+       unsigned char *data;
+       unsigned short 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;
 
-#endif
+       if (!s_quiet)
+               {
+               /* We can assume that |in| is syntactically valid. */
+               unsigned i;
+               BIO_printf(bio_s_out, "ALPN protocols advertised by the client: ");
+               for (i = 0; i < inlen; )
+                       {
+                       if (i)
+                               BIO_write(bio_s_out, ", ", 2);
+                       BIO_write(bio_s_out, &in[i + 1], in[i]);
+                       i += in[i] + 1;
+                       }
+               BIO_write(bio_s_out, "\n", 1);
+               }
+
+       if (SSL_select_next_proto((unsigned char**) out, outlen, alpn_ctx->data, alpn_ctx->len, in, inlen) !=
+           OPENSSL_NPN_NEGOTIATED)
+               {
+               return SSL_TLSEXT_ERR_NOACK;
+               }
+
+       if (!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;
+       }
+#endif  /* ndef OPENSSL_NO_TLSEXT */
 
 int MAIN(int, char **);
 
@@ -941,7 +999,9 @@ static char *jpake_secret = NULL;
 #ifndef OPENSSL_NO_SRP
        static srpsrvparm srp_callback_parm;
 #endif
+#ifndef OPENSSL_NO_SRTP
 static char *srtp_profiles = NULL;
+#endif
 
 int MAIN(int argc, char *argv[])
        {
@@ -969,16 +1029,18 @@ int MAIN(int argc, char *argv[])
        X509 *s_cert = NULL, *s_dcert = NULL;
        STACK_OF(X509) *s_chain = NULL, *s_dchain = NULL;
        EVP_PKEY *s_key = NULL, *s_dkey = NULL;
-       int no_cache = 0;
-       int rev = 0;
+       int no_cache = 0, ext_cache = 0;
+       int rev = 0, naccept = -1;
 #ifndef OPENSSL_NO_TLSEXT
        EVP_PKEY *s_key2 = NULL;
        X509 *s_cert2 = NULL;
         tlsextctx tlsextcbp = {NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING};
 # ifndef OPENSSL_NO_NEXTPROTONEG
        const char *next_proto_neg_in = NULL;
-       tlsextnextprotoctx next_proto;
+       tlsextnextprotoctx next_proto = { NULL, 0};
 # endif
+       const char *alpn_in = NULL;
+       tlsextalpnctx alpn_ctx = { NULL, 0};
 #endif
 #ifndef OPENSSL_NO_PSK
        /* by default do not send a PSK identity hint */
@@ -1037,6 +1099,17 @@ int MAIN(int argc, char *argv[])
                        if (!extract_port(*(++argv),&port))
                                goto bad;
                        }
+               else if (strcmp(*argv,"-naccept") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       naccept = atol(*(++argv));
+                       if (naccept <= 0)
+                               {
+                               BIO_printf(bio_err, "bad accept value %s\n",
+                                                       *argv);
+                               goto bad;
+                               }
+                       }
                else if (strcmp(*argv,"-verify") == 0)
                        {
                        s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
@@ -1072,11 +1145,6 @@ int MAIN(int argc, char *argv[])
                else if (strcmp(*argv,"-crl_download") == 0)
                        crl_download = 1;
 #ifndef OPENSSL_NO_TLSEXT
-               else if (strcmp(*argv,"-authz") == 0)
-                       {
-                       if (--argc < 1) goto bad;
-                       s_authz_file = *(++argv);
-                       }
                else if (strcmp(*argv,"-serverinfo") == 0)
                        {
                        if (--argc < 1) goto bad;
@@ -1164,6 +1232,8 @@ int MAIN(int argc, char *argv[])
                        }
                else if (strcmp(*argv,"-no_cache") == 0)
                        no_cache = 1;
+               else if (strcmp(*argv,"-ext_cache") == 0)
+                       ext_cache = 1;
                else if (strcmp(*argv,"-CRLform") == 0)
                        {
                        if (--argc < 1) goto bad;
@@ -1219,6 +1289,10 @@ int MAIN(int argc, char *argv[])
 #endif
                        s_nbio_test=1;
                        }
+               else if (strcmp(*argv,"-ign_eof") == 0)
+                       s_ign_eof=1;
+               else if (strcmp(*argv,"-no_ign_eof") == 0)
+                       s_ign_eof=0;
                else if (strcmp(*argv,"-debug") == 0)
                        { s_debug=1; }
 #ifndef OPENSSL_NO_TLSEXT
@@ -1330,9 +1404,12 @@ int MAIN(int argc, char *argv[])
                        { www=3; }
 #ifndef OPENSSL_NO_SSL2
                else if (strcmp(*argv,"-ssl2") == 0)
-                       { meth=SSLv2_server_method(); }
+                       {
+                       no_ecdhe=1;
+                       meth=SSLv2_server_method();
+                       }
 #endif
-#ifndef OPENSSL_NO_SSL3
+#ifndef OPENSSL_NO_SSL3_METHOD
                else if (strcmp(*argv,"-ssl3") == 0)
                        { meth=SSLv3_server_method(); }
 #endif
@@ -1345,11 +1422,21 @@ int MAIN(int argc, char *argv[])
                        { meth=TLSv1_2_server_method(); }
 #endif
 #ifndef OPENSSL_NO_DTLS1
+               else if (strcmp(*argv,"-dtls") == 0)
+                       { 
+                       meth=DTLS_server_method();
+                       socket_type = SOCK_DGRAM;
+                       }
                else if (strcmp(*argv,"-dtls1") == 0)
                        { 
                        meth=DTLSv1_server_method();
                        socket_type = SOCK_DGRAM;
                        }
+               else if (strcmp(*argv,"-dtls1_2") == 0)
+                       { 
+                       meth=DTLSv1_2_server_method();
+                       socket_type = SOCK_DGRAM;
+                       }
                else if (strcmp(*argv,"-timeout") == 0)
                        enable_timeouts = 1;
                else if (strcmp(*argv,"-mtu") == 0)
@@ -1402,6 +1489,11 @@ int MAIN(int argc, char *argv[])
                        next_proto_neg_in = *(++argv);
                        }
 # endif
+               else if (strcmp(*argv,"-alpn") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       alpn_in = *(++argv);
+                       }
 #endif
 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
                else if (strcmp(*argv,"-jpake") == 0)
@@ -1410,11 +1502,13 @@ int MAIN(int argc, char *argv[])
                        jpake_secret = *(++argv);
                        }
 #endif
+#ifndef OPENSSL_NO_SRTP
                else if (strcmp(*argv,"-use_srtp") == 0)
                        {
                        if (--argc < 1) goto bad;
                        srtp_profiles = *(++argv);
                        }
+#endif
                else if (strcmp(*argv,"-keymatexport") == 0)
                        {
                        if (--argc < 1) goto bad;
@@ -1441,6 +1535,14 @@ bad:
                sv_usage();
                goto end;
                }
+#ifndef OPENSSL_NO_DTLS1
+       if (www && socket_type == SOCK_DGRAM)
+               {
+               BIO_printf(bio_err,
+                               "Can't use -HTTP, -www or -WWW with DTLS\n");
+               goto end;
+               }
+#endif
 
 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
        if (jpake_secret)
@@ -1528,7 +1630,8 @@ bad:
 #endif /* OPENSSL_NO_TLSEXT */
                }
 
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 
+#if !defined(OPENSSL_NO_TLSEXT)
+# if !defined(OPENSSL_NO_NEXTPROTONEG) 
        if (next_proto_neg_in)
                {
                unsigned short len;
@@ -1541,6 +1644,16 @@ bad:
                {
                next_proto.data = NULL;
                }
+# endif
+       alpn_ctx.data = NULL;
+       if (alpn_in)
+               {
+               unsigned short len;
+               alpn_ctx.data = next_protos_parse(&len, alpn_in);
+               if (alpn_ctx.data == NULL)
+                       goto end;
+               alpn_ctx.len = len;
+               }
 #endif
 
        if (crl_file)
@@ -1668,11 +1781,15 @@ bad:
        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);
 
+#ifndef OPENSSL_NO_SRTP
        if (srtp_profiles != NULL)
                SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
+#endif
 
 #if 0
        if (cipher == NULL) cipher=getenv("SSL_CIPHER");
@@ -1752,6 +1869,8 @@ bad:
 
                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);
 
@@ -1774,6 +1893,8 @@ bad:
        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);
 #endif 
 
 #ifndef OPENSSL_NO_DH
@@ -1823,11 +1944,12 @@ bad:
        if (!set_cert_key_stuff(ctx, s_cert, s_key, s_chain, build_chain))
                goto end;
 #ifndef OPENSSL_NO_TLSEXT
-       if (s_authz_file != NULL && !SSL_CTX_use_authz_file(ctx, s_authz_file))
-               goto end;
        if (s_serverinfo_file != NULL
            && !SSL_CTX_use_serverinfo_file(ctx, s_serverinfo_file))
+               {
+               ERR_print_errors(bio_err);
                goto end;
+               }
 #endif
 #ifndef OPENSSL_NO_TLSEXT
        if (ctx2 && !set_cert_key_stuff(ctx2,s_cert2,s_key2, NULL, build_chain))
@@ -1954,11 +2076,11 @@ bad:
        BIO_printf(bio_s_out,"ACCEPT\n");
        (void)BIO_flush(bio_s_out);
        if (rev)
-               do_server(port,socket_type,&accept_socket,rev_body, context);
+               do_server(port,socket_type,&accept_socket,rev_body, context, naccept);
        else if (www)
-               do_server(port,socket_type,&accept_socket,www_body, context);
+               do_server(port,socket_type,&accept_socket,www_body, context, naccept);
        else
-               do_server(port,socket_type,&accept_socket,sv_body, context);
+               do_server(port,socket_type,&accept_socket,sv_body, context, naccept);
        print_stats(bio_s_out,ctx);
        ret=0;
 end:
@@ -1983,6 +2105,7 @@ end:
                OPENSSL_free(dpass);
        if (vpm)
                X509_VERIFY_PARAM_free(vpm);
+       free_sessions();
 #ifndef OPENSSL_NO_TLSEXT
        if (tlscstatp.host)
                OPENSSL_free(tlscstatp.host);
@@ -1995,10 +2118,14 @@ end:
                X509_free(s_cert2);
        if (s_key2)
                EVP_PKEY_free(s_key2);
-       if (authz_in != NULL)
-               BIO_free(authz_in);
        if (serverinfo_in != NULL)
                BIO_free(serverinfo_in);
+# ifndef OPENSSL_NO_NEXTPROTONEG
+       if (next_proto.data)
+               OPENSSL_free(next_proto.data);
+# endif
+       if (alpn_ctx.data)
+               OPENSSL_free(alpn_ctx.data);
 #endif
        ssl_excert_free(exc);
        if (ssl_args)
@@ -2048,7 +2175,7 @@ static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
                SSL_CTX_sess_get_cache_size(ssl_ctx));
        }
 
-static int sv_body(char *hostname, int s, unsigned char *context)
+static int sv_body(char *hostname, int s, int stype, unsigned char *context)
        {
        char *buf=NULL;
        fd_set readfds;
@@ -2118,7 +2245,7 @@ static int sv_body(char *hostname, int s, unsigned char *context)
 #endif
 #endif
 
-       if (SSL_version(con) == DTLS1_VERSION)
+       if (stype == SOCK_DGRAM)
                {
 
                sbio=BIO_new_dgram(s,BIO_NOCLOSE);
@@ -2134,10 +2261,24 @@ static int sv_body(char *hostname, int s, unsigned char *context)
                        BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
                        }
 
-               if (socket_mtu > 28)
+               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);
-                       SSL_set_mtu(con, socket_mtu - 28);
+                       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 */
@@ -2502,6 +2643,15 @@ static int init_ssl_connection(SSL *con)
 
 
        i=SSL_accept(con);
+#ifdef CERT_CB_TEST_RETRY
+       {
+       while (i <= 0 && SSL_get_error(con,i) == SSL_ERROR_WANT_X509_LOOKUP && SSL_state(con) == SSL3_ST_SR_CLNT_HELLO_C) 
+               {
+               fprintf(stderr, "LOOKUP from certificate callback during accept\n");
+               i=SSL_accept(con);
+               }
+       }
+#endif
 #ifndef OPENSSL_NO_SRP
        while (i <= 0 &&  SSL_get_error(con,i) == SSL_ERROR_WANT_X509_LOOKUP) 
                {
@@ -2514,6 +2664,7 @@ static int init_ssl_connection(SSL *con)
                        i=SSL_accept(con);
                }
 #endif
+
        if (i <= 0)
                {
                if (BIO_sock_should_retry(i))
@@ -2555,7 +2706,10 @@ static int init_ssl_connection(SSL *con)
                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_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
@@ -2567,6 +2721,7 @@ static int init_ssl_connection(SSL *con)
                BIO_printf(bio_s_out, "\n");
                }
 #endif
+#ifndef OPENSSL_NO_SRTP
        {
        SRTP_PROTECTION_PROFILE *srtp_profile
          = SSL_get_selected_srtp_profile(con);
@@ -2575,6 +2730,7 @@ static int init_ssl_connection(SSL *con)
                BIO_printf(bio_s_out,"SRTP Extension negotiated, profile=%s\n",
                           srtp_profile->name);
        }
+#endif
        if (SSL_cache_hit(con)) BIO_printf(bio_s_out,"Reused session-id\n");
        if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
                TLS1_FLAGS_TLS_PADDING_BUG)
@@ -2661,7 +2817,7 @@ static int load_CA(SSL_CTX *ctx, char *file)
        }
 #endif
 
-static int www_body(char *hostname, int s, unsigned char *context)
+static int www_body(char *hostname, int s, int stype, unsigned char *context)
        {
        char *buf=NULL;
        int ret=1;
@@ -2875,7 +3031,9 @@ static int www_body(char *hostname, int s, unsigned char *context)
                                BIO_puts(io,"\n");
                                }
                        ssl_print_sigalgs(io, con);
+#ifndef OPENSSL_NO_EC
                        ssl_print_curves(io, con, 0);
+#endif
                        BIO_printf(io,(SSL_cache_hit(con)
                                ?"---\nReused, "
                                :"---\nNew, "));
@@ -3069,7 +3227,7 @@ err:
        return(ret);
        }
 
-static int rev_body(char *hostname, int s, unsigned char *context)
+static int rev_body(char *hostname, int s, int stype, unsigned char *context)
        {
        char *buf=NULL;
        int i;
@@ -3185,6 +3343,12 @@ static int rev_body(char *hostname, int s, unsigned char *context)
                                p--;
                                i--;
                                }
+                       if (!s_ign_eof && i == 5 && !strncmp(buf, "CLOSE", 5))
+                               {
+                               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);
@@ -3263,3 +3427,107 @@ static int generate_session_id(const SSL *ssl, unsigned char *id,
                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;
+       unsigned char *p;
+
+       sess = OPENSSL_malloc(sizeof(simple_ssl_session));
+
+       SSL_SESSION_get_id(session, &sess->idlen);
+       sess->derlen = i2d_SSL_SESSION(session, NULL);
+
+       sess->id = BUF_memdup(SSL_SESSION_get_id(session, NULL), sess->idlen);
+
+       sess->der = OPENSSL_malloc(sess->derlen);
+       p = sess->der;
+       i2d_SSL_SESSION(session, &p);
+
+       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, 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;
+       }
+