Fix signed/unsigned char clashes.
[openssl.git] / apps / s_client.c
index 7b1fa7b22be01569f6636766b3f699a70ab5706b..c7916677412f9cdfc385f16a64d2ebf24b88d3e5 100644 (file)
@@ -56,7 +56,7 @@
  * [including the GNU Public Licence.]
  */
 /* ====================================================================
- * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -135,19 +135,7 @@ typedef unsigned int u_int;
 #include <openssl/pem.h>
 #include <openssl/rand.h>
 #include "s_apps.h"
-
-#ifdef OPENSSL_SYS_WINDOWS
-#include <conio.h>
-#endif
-
-#ifdef OPENSSL_SYS_WINCE
-/* Windows CE incorrectly defines fileno as returning void*, so to avoid problems below... */
-#ifdef fileno
-#undef fileno
-#endif
-#define fileno(a) (int)_fileno(a)
-#endif
-
+#include "timeouts.h"
 
 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
@@ -193,14 +181,20 @@ static void sc_usage(void)
 
        BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
        BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
-       BIO_printf(bio_err," -key arg      - Private key file to use, PEM format assumed, in cert file if\n");
+       BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
+       BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");
        BIO_printf(bio_err,"                 not specified but cert file is.\n");
+       BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");
+       BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
        BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
        BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
        BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
        BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
        BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
        BIO_printf(bio_err," -debug        - extra output\n");
+#ifdef WATT32
+       BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");
+#endif
        BIO_printf(bio_err," -msg          - Show protocol messages\n");
        BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
        BIO_printf(bio_err," -state        - print the 'ssl' states\n");
@@ -213,6 +207,8 @@ static void sc_usage(void)
        BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
        BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
        BIO_printf(bio_err," -tls1         - just use TLSv1\n");
+       BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");    
+       BIO_printf(bio_err," -mtu          - set the MTU\n");
        BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
        BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
        BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
@@ -221,11 +217,37 @@ static void sc_usage(void)
        BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
        BIO_printf(bio_err,"                 for those protocols that support it, where\n");
        BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
-       BIO_printf(bio_err,"                 only \"smtp\" is supported.\n");
+       BIO_printf(bio_err,"                 only \"smtp\" and \"pop3\" are supported.\n");
+#ifndef OPENSSL_NO_ENGINE
        BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
+#endif
        BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
+#ifndef OPENSSL_NO_TLSEXT
+       BIO_printf(bio_err," -servername host  - Set TLS extension servername in ClientHello\n");
+#endif
+       }
+
+#ifndef OPENSSL_NO_TLSEXT
+
+/* This is a context that we pass to callbacks */
+typedef struct tlsextctx_st {
+   BIO * biodebug;
+   int ack;
+} tlsextctx;
 
+
+static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
+       {
+       tlsextctx * p = (tlsextctx *) arg;
+       const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
+       if (SSL_get_servername_type(s) != -1) 
+               p->ack = !SSL_session_reused(s) && hn != NULL;
+       else 
+               BIO_printf(bio_err,"Can't use SSL_get_servername\n");
+       
+       return SSL_ERROR_NONE;
        }
+#endif
 
 int MAIN(int, char **);
 
@@ -243,23 +265,40 @@ int MAIN(int argc, char **argv)
        int full_log=1;
        char *host=SSL_HOST_NAME;
        char *cert_file=NULL,*key_file=NULL;
+       int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
+       char *passarg = NULL, *pass = NULL;
+       X509 *cert = NULL;
+       EVP_PKEY *key = NULL;
        char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
        int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
        int crlf=0;
        int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
        SSL_CTX *ctx=NULL;
        int ret=1,in_init=1,i,nbio_test=0;
-       int smtp_starttls = 0;
+       int starttls_proto = 0;
        int prexit = 0, vflags = 0;
-       SSL_METHOD *meth=NULL;
+       const SSL_METHOD *meth=NULL;
+       int socket_type=SOCK_STREAM;
        BIO *sbio;
        char *inrand=NULL;
+#ifndef OPENSSL_NO_ENGINE
        char *engine_id=NULL;
        ENGINE *e=NULL;
-#ifdef OPENSSL_SYS_WINDOWS
+#endif
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
        struct timeval tv;
 #endif
 
+#ifndef OPENSSL_NO_TLSEXT
+       char *servername = NULL; 
+        tlsextctx tlsextcbp = 
+        {NULL,0};
+#endif
+       struct sockaddr peer;
+       int peerlen = sizeof(peer);
+       int enable_timeouts = 0 ;
+       long socket_mtu = 0;
+
 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
        meth=SSLv23_client_method();
 #elif !defined(OPENSSL_NO_SSL3)
@@ -329,6 +368,11 @@ int MAIN(int argc, char **argv)
                        if (--argc < 1) goto bad;
                        cert_file= *(++argv);
                        }
+               else if (strcmp(*argv,"-certform") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       cert_format = str2fmt(*(++argv));
+                       }
                else if (strcmp(*argv,"-crl_check") == 0)
                        vflags |= X509_V_FLAG_CRL_CHECK;
                else if (strcmp(*argv,"-crl_check_all") == 0)
@@ -348,6 +392,10 @@ int MAIN(int argc, char **argv)
                        c_Pause=1;
                else if (strcmp(*argv,"-debug") == 0)
                        c_debug=1;
+#ifdef WATT32
+               else if (strcmp(*argv,"-wdebug") == 0)
+                       dbug_init();
+#endif
                else if (strcmp(*argv,"-msg") == 0)
                        c_msg=1;
                else if (strcmp(*argv,"-showcerts") == 0)
@@ -367,9 +415,33 @@ int MAIN(int argc, char **argv)
 #ifndef OPENSSL_NO_TLS1
                else if (strcmp(*argv,"-tls1") == 0)
                        meth=TLSv1_client_method();
+#endif
+#ifndef OPENSSL_NO_DTLS1
+               else if (strcmp(*argv,"-dtls1") == 0)
+                       {
+                       meth=DTLSv1_client_method();
+                       socket_type=SOCK_DGRAM;
+                       }
+               else if (strcmp(*argv,"-timeout") == 0)
+                       enable_timeouts=1;
+               else if (strcmp(*argv,"-mtu") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       socket_mtu = atol(*(++argv));
+                       }
 #endif
                else if (strcmp(*argv,"-bugs") == 0)
                        bugs=1;
+               else if (strcmp(*argv,"-keyform") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       key_format = str2fmt(*(++argv));
+                       }
+               else if (strcmp(*argv,"-pass") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       passarg = *(++argv);
+                       }
                else if (strcmp(*argv,"-key") == 0)
                        {
                        if (--argc < 1) goto bad;
@@ -395,6 +467,8 @@ int MAIN(int argc, char **argv)
                        off|=SSL_OP_NO_SSLv3;
                else if (strcmp(*argv,"-no_ssl2") == 0)
                        off|=SSL_OP_NO_SSLv2;
+               else if (strcmp(*argv,"-no_comp") == 0)
+                       { off|=SSL_OP_NO_COMPRESSION; }
                else if (strcmp(*argv,"-serverpref") == 0)
                        off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
                else if (strcmp(*argv,"-cipher") == 0)
@@ -411,20 +485,32 @@ int MAIN(int argc, char **argv)
                        if (--argc < 1) goto bad;
                        ++argv;
                        if (strcmp(*argv,"smtp") == 0)
-                               smtp_starttls = 1;
+                               starttls_proto = 1;
+                       else if (strcmp(*argv,"pop3") == 0)
+                               starttls_proto = 2;
                        else
                                goto bad;
                        }
+#ifndef OPENSSL_NO_ENGINE
                else if (strcmp(*argv,"-engine") == 0)
                        {
                        if (--argc < 1) goto bad;
                        engine_id = *(++argv);
                        }
+#endif
                else if (strcmp(*argv,"-rand") == 0)
                        {
                        if (--argc < 1) goto bad;
                        inrand= *(++argv);
                        }
+#ifndef OPENSSL_NO_TLSEXT
+               else if (strcmp(*argv,"-servername") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       servername= *(++argv);
+                       /* meth=TLSv1_client_method(); */
+                       }
+#endif
                else
                        {
                        BIO_printf(bio_err,"unknown option %s\n",*argv);
@@ -444,7 +530,45 @@ bad:
        OpenSSL_add_ssl_algorithms();
        SSL_load_error_strings();
 
+#ifndef OPENSSL_NO_ENGINE
         e = setup_engine(bio_err, engine_id, 1);
+#endif
+       if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
+               {
+               BIO_printf(bio_err, "Error getting password\n");
+               goto end;
+               }
+
+       if (key_file == NULL)
+               key_file = cert_file;
+
+
+       if (key_file)
+
+               {
+
+               key = load_key(bio_err, key_file, key_format, 0, pass, e,
+                              "client certificate private key file");
+               if (!key)
+                       {
+                       ERR_print_errors(bio_err);
+                       goto end;
+                       }
+
+               }
+
+       if (cert_file)
+
+               {
+               cert = load_cert(bio_err,cert_file,cert_format,
+                               NULL, e, "client certificate file");
+
+               if (!cert)
+                       {
+                       ERR_print_errors(bio_err);
+                       goto end;
+                       }
+               }
 
        if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
                && !RAND_status())
@@ -479,6 +603,10 @@ bad:
                SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
        else
                SSL_CTX_set_options(ctx,off);
+       /* DTLS: partial reads end up discarding unread UDP bytes :-( 
+        * Setting read ahead solves this problem.
+        */
+       if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
 
        if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
        if (cipher != NULL)
@@ -493,7 +621,7 @@ bad:
 #endif
 
        SSL_CTX_set_verify(ctx,verify,verify_callback);
-       if (!set_cert_stuff(ctx,cert_file,key_file))
+       if (!set_cert_key_stuff(ctx,cert,key))
                goto end;
 
        if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
@@ -506,8 +634,27 @@ bad:
 
        store = SSL_CTX_get_cert_store(ctx);
        X509_STORE_set_flags(store, vflags);
+#ifndef OPENSSL_NO_TLSEXT
+       if (servername != NULL)
+               {
+               tlsextcbp.biodebug = bio_err;
+               SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
+               SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
+               }
+#endif
 
        con=SSL_new(ctx);
+#ifndef OPENSSL_NO_TLSEXT
+       if (servername != NULL)
+               {
+               if (!SSL_set_tlsext_hostname(con,servername))
+                       {
+                       BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
+                       ERR_print_errors(bio_err);
+                       goto end;
+                       }
+               }
+#endif
 #ifndef OPENSSL_NO_KRB5
        if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
                 {
@@ -518,7 +665,7 @@ bad:
 
 re_start:
 
-       if (init_client(&s,host,port) == 0)
+       if (init_client(&s,host,port,socket_type) == 0)
                {
                BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
                SHUTDOWN(s);
@@ -539,7 +686,46 @@ re_start:
                }
 #endif                                              
        if (c_Pause & 0x01) con->debug=1;
-       sbio=BIO_new_socket(s,BIO_NOCLOSE);
+
+       if ( SSL_version(con) == DTLS1_VERSION)
+               {
+               struct timeval timeout;
+
+               sbio=BIO_new_dgram(s,BIO_NOCLOSE);
+               if (getsockname(s, &peer, (void *)&peerlen) < 0)
+                       {
+                       BIO_printf(bio_err, "getsockname:errno=%d\n",
+                               get_last_socket_error());
+                       SHUTDOWN(s);
+                       goto end;
+                       }
+
+               BIO_ctrl_set_connected(sbio, 1, &peer);
+
+               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 > 0)
+                       {
+                       SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
+                       SSL_set_mtu(con, socket_mtu);
+                       }
+               else
+                       /* want to do MTU discovery */
+                       BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
+               }
+       else
+               sbio=BIO_new_socket(s,BIO_NOCLOSE);
+
+
 
        if (nbio_test)
                {
@@ -552,7 +738,7 @@ re_start:
        if (c_debug)
                {
                con->debug=1;
-               BIO_set_callback(sbio,bio_dump_cb);
+               BIO_set_callback(sbio,bio_dump_callback);
                BIO_set_callback_arg(sbio,bio_c_out);
                }
        if (c_msg)
@@ -579,12 +765,18 @@ re_start:
        sbuf_off=0;
 
        /* This is an ugly hack that does a lot of assumptions */
-       if (smtp_starttls)
+       if (starttls_proto == 1)
                {
                BIO_read(sbio,mbuf,BUFSIZZ);
                BIO_printf(sbio,"STARTTLS\r\n");
                BIO_read(sbio,sbuf,BUFSIZZ);
                }
+       if (starttls_proto == 2)
+               {
+               BIO_read(sbio,mbuf,BUFSIZZ);
+               BIO_printf(sbio,"STLS\r\n");
+               BIO_read(sbio,sbuf,BUFSIZZ);
+               }
 
        for (;;)
                {
@@ -602,14 +794,20 @@ re_start:
                        if (in_init)
                                {
                                in_init=0;
+#ifndef OPENSSL_NO_TLSEXT
+       if (servername != NULL && !SSL_session_reused(con))
+               {
+               BIO_printf(bio_c_out,"Server did %sacknowledge servername extension.\n",tlsextcbp.ack?"":"not ");
+               }
+#endif
                                print_stuff(bio_c_out,con,full_log);
                                if (full_log > 0) full_log--;
 
-                               if (smtp_starttls)
+                               if (starttls_proto)
                                        {
                                        BIO_printf(bio_err,"%s",mbuf);
                                        /* We don't need to know any more */
-                                       smtp_starttls = 0;
+                                       starttls_proto = 0;
                                        }
 
                                if (reconnect)
@@ -628,7 +826,7 @@ re_start:
 
                if (!ssl_pending)
                        {
-#ifndef OPENSSL_SYS_WINDOWS
+#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE)
                        if (tty_on)
                                {
                                if (read_tty)  FD_SET(fileno(stdin),&readfds);
@@ -655,8 +853,8 @@ re_start:
                         * will choke the compiler: if you do have a cast then
                         * you can either go for (int *) or (void *).
                         */
-#ifdef OPENSSL_SYS_WINDOWS
-                       /* Under Windows we make the assumption that we can
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
+                        /* Under Windows/DOS we make the assumption that we can
                         * always write to the tty: therefore if we need to
                         * write to the tty we just fall through. Otherwise
                         * we timeout the select every second and see if there
@@ -670,7 +868,7 @@ re_start:
                                        tv.tv_usec = 0;
                                        i=select(width,(void *)&readfds,(void *)&writefds,
                                                 NULL,&tv);
-#ifdef OPENSSL_SYS_WINCE
+#if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
                                        if(!i && (!_kbhit() || !read_tty) ) continue;
 #else
                                        if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
@@ -678,6 +876,16 @@ re_start:
                                } else  i=select(width,(void *)&readfds,(void *)&writefds,
                                         NULL,NULL);
                        }
+#elif defined(OPENSSL_SYS_NETWARE)
+                       if(!write_tty) {
+                               if(read_tty) {
+                                       tv.tv_sec = 1;
+                                       tv.tv_usec = 0;
+                                       i=select(width,(void *)&readfds,(void *)&writefds,
+                                               NULL,&tv);
+                               } else  i=select(width,(void *)&readfds,(void *)&writefds,
+                                       NULL,NULL);
+                       }
 #else
                        i=select(width,(void *)&readfds,(void *)&writefds,
                                 NULL,NULL);
@@ -758,7 +966,7 @@ re_start:
                                goto shut;
                                }
                        }
-#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
                /* Assume Windows/DOS can always write */
                else if (!ssl_pending && write_tty)
 #else
@@ -768,7 +976,7 @@ re_start:
 #ifdef CHARSET_EBCDIC
                        ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
 #endif
-                       i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
+                       i=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);
 
                        if (i <= 0)
                                {
@@ -839,12 +1047,14 @@ printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240
                                }
                        }
 
-#ifdef OPENSSL_SYS_WINDOWS
-#ifdef OPENSSL_SYS_WINCE
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
+#if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
                else if (_kbhit())
 #else
                else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
 #endif
+#elif defined (OPENSSL_SYS_NETWARE)
+               else if (_kbhit())
 #else
                else if (FD_ISSET(fileno(stdin),&readfds))
 #endif
@@ -853,7 +1063,7 @@ printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240
                                {
                                int j, lf_num;
 
-                               i=read(fileno(stdin),cbuf,BUFSIZZ/2);
+                               i=raw_read_stdin(cbuf,BUFSIZZ/2);
                                lf_num = 0;
                                /* both loops are skipped when i <= 0 */
                                for (j = 0; j < i; j++)
@@ -872,7 +1082,7 @@ printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240
                                assert(lf_num == 0);
                                }
                        else
-                               i=read(fileno(stdin),cbuf,BUFSIZZ);
+                               i=raw_read_stdin(cbuf,BUFSIZZ);
 
                        if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
                                {
@@ -908,6 +1118,12 @@ end:
        if (con != NULL) SSL_free(con);
        if (con2 != NULL) SSL_free(con2);
        if (ctx != NULL) SSL_CTX_free(ctx);
+       if (cert)
+               X509_free(cert);
+       if (key)
+               EVP_PKEY_free(key);
+       if (pass)
+               OPENSSL_free(pass);
        if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
        if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
        if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
@@ -917,7 +1133,7 @@ end:
                bio_c_out=NULL;
                }
        apps_shutdown();
-       EXIT(ret);
+       OPENSSL_EXIT(ret);
        }
 
 
@@ -925,13 +1141,16 @@ static void print_stuff(BIO *bio, SSL *s, int full)
        {
        X509 *peer=NULL;
        char *p;
-       static char *space="                ";
+       static const char *space="                ";
        char buf[BUFSIZ];
        STACK_OF(X509) *sk;
        STACK_OF(X509_NAME) *sk2;
        SSL_CIPHER *c;
        X509_NAME *xn;
        int j,i;
+#ifndef OPENSSL_NO_COMP
+       const COMP_METHOD *comp, *expansion;
+#endif
 
        if (full)
                {
@@ -1034,6 +1253,14 @@ static void print_stuff(BIO *bio, SSL *s, int full)
                                                         EVP_PKEY_bits(pktmp));
                EVP_PKEY_free(pktmp);
        }
+#ifndef OPENSSL_NO_COMP
+       comp=SSL_get_current_compression(s);
+       expansion=SSL_get_current_expansion(s);
+       BIO_printf(bio,"Compression: %s\n",
+               comp ? SSL_COMP_get_name(comp) : "NONE");
+       BIO_printf(bio,"Expansion: %s\n",
+               expansion ? SSL_COMP_get_name(expansion) : "NONE");
+#endif
        SSL_SESSION_print(bio,SSL_get_session(s));
        BIO_printf(bio,"---\n");
        if (peer != NULL)