Fix warnings.
[openssl.git] / apps / s_client.c
index 44f228a..59a4daa 100644 (file)
  * copied and put under another distribution licence
  * [including the GNU Public Licence.]
  */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 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 <assert.h>
+#include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#define USE_SOCKETS
-#ifdef NO_STDIO
+#include <openssl/e_os2.h>
+#ifdef OPENSSL_NO_STDIO
 #define APPS_WIN16
 #endif
+
+/* 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
+
+#define USE_SOCKETS
 #include "apps.h"
 #include <openssl/x509.h>
 #include <openssl/ssl.h>
 #include <openssl/err.h>
 #include <openssl/pem.h>
+#include <openssl/rand.h>
 #include "s_apps.h"
+#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 */
+#undef FIONBIO
+#endif
 
-#if defined(NO_RSA) && !defined(NO_SSL2)
-#define NO_SSL2
+#if defined(OPENSSL_SYS_BEOS_R5)
+#include <fcntl.h>
 #endif
 
 #undef PROG
 
 extern int verify_depth;
 extern int verify_error;
+extern int verify_return_error;
 
 #ifdef FIONBIO
 static int c_nbio=0;
 #endif
 static int c_Pause=0;
 static int c_debug=0;
+#ifndef OPENSSL_NO_TLSEXT
+static int c_tlsextdebug=0;
+#endif
+static int c_msg=0;
 static int c_showcerts=0;
 
 static void sc_usage(void);
 static void print_stuff(BIO *berr,SSL *con,int full);
 static BIO *bio_c_out=NULL;
 static int c_quiet=0;
+static int c_ign_eof=0;
+
+#ifndef OPENSSL_NO_PSK
+/* Default PSK identity and key */
+static char *psk_identity="Client_identity";
+static char *psk_key=NULL; /* by default PSK is not used */
+
+static unsigned int psk_client_cb(SSL *ssl, const char *hint, char *identity,
+       unsigned int max_identity_len, unsigned char *psk,
+       unsigned int max_psk_len)
+       {
+       unsigned int psk_len = 0;
+       int ret;
+        BIGNUM *bn=NULL;
+
+       if (c_debug)
+               BIO_printf(bio_c_out, "psk_client_cb\n");
+       if (!hint)
+                {
+                /* no ServerKeyExchange message*/
+               if (c_debug)
+                       BIO_printf(bio_c_out,"NULL received PSK identity hint, continuing anyway\n");
+                }
+        else if (c_debug)
+               BIO_printf(bio_c_out, "Received PSK identity hint '%s'\n", hint);
+
+       /* lookup PSK identity and PSK key based on the given identity hint here */
+       ret = BIO_snprintf(identity, max_identity_len, psk_identity);
+       if (ret < 0 || (unsigned int)ret > max_identity_len)
+               goto out_err;
+       if (c_debug)
+               BIO_printf(bio_c_out, "created identity '%s' len=%d\n", identity, ret);
+        ret=BN_hex2bn(&bn, psk_key);
+        if (!ret)
+                {
+                BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
+                if (bn)
+                        BN_free(bn);
+                return 0;
+                }
+
+        if ((unsigned int)BN_num_bytes(bn) > max_psk_len)
+                {
+                BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
+                        max_psk_len, BN_num_bytes(bn));
+                BN_free(bn);
+                return 0;
+                }
+
+        psk_len=BN_bn2bin(bn, psk);
+        BN_free(bn);
+        if (psk_len == 0)
+                goto out_err;
+
+       if (c_debug)
+               BIO_printf(bio_c_out, "created PSK len=%d\n", psk_len);
+
+        return psk_len;
+ out_err:
+       if (c_debug)
+               BIO_printf(bio_err, "Error in PSK client callback\n");
+        return 0;
+       }
+#endif
 
 static void sc_usage(void)
        {
@@ -111,36 +279,96 @@ 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");
 #ifdef FIONBIO
        BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 #endif
+       BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
        BIO_printf(bio_err," -quiet        - no s_client output\n");
+       BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
+#ifndef OPENSSL_NO_PSK
+       BIO_printf(bio_err," -psk_identity arg - PSK identity\n");
+       BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
+#endif
        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," -cipher       - prefered cipher to use, use the 'openssl ciphers'\n");
+       BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
+       BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
        BIO_printf(bio_err,"                 command to see what is available\n");
+       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\", \"pop3\", \"imap\", and \"ftp\" 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_TLSEXT_ERR_OK;
        }
+#endif
+
+enum
+{
+       PROTO_OFF       = 0,
+       PROTO_SMTP,
+       PROTO_POP3,
+       PROTO_IMAP,
+       PROTO_FTP
+};
+
+int MAIN(int, char **);
 
 int MAIN(int argc, char **argv)
        {
        int off=0;
-       SSL *con=NULL,*con2=NULL;
+       SSL *con=NULL;
+       X509_STORE *store = NULL;
        int s,k,width,state=0;
-       char *cbuf=NULL,*sbuf=NULL;
+       char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
        int cbuf_len,cbuf_off;
        int sbuf_len,sbuf_off;
        fd_set readfds,writefds;
@@ -148,34 +376,71 @@ 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;
-       SSL_METHOD *meth=NULL;
+       int starttls_proto = PROTO_OFF;
+       int prexit = 0, vflags = 0;
+       const SSL_METHOD *meth=NULL;
+       int socket_type=SOCK_STREAM;
        BIO *sbio;
-       /*static struct timeval timeout={10,0};*/
+       char *inrand=NULL;
+       int mbuf_len=0;
+#ifndef OPENSSL_NO_ENGINE
+       char *engine_id=NULL;
+       ENGINE *e=NULL;
+#endif
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
+       struct timeval tv;
+#if defined(OPENSSL_SYS_BEOS_R5)
+       int stdin_set = 0;
+#endif
+#endif
+
+#ifndef OPENSSL_NO_TLSEXT
+       char *servername = NULL; 
+        tlsextctx tlsextcbp = 
+        {NULL,0};
+#endif
+       char *sess_in = NULL;
+       char *sess_out = NULL;
+       struct sockaddr peer;
+       int peerlen = sizeof(peer);
+       int enable_timeouts = 0 ;
+       long socket_mtu = 0;
 
-#if !defined(NO_SSL2) && !defined(NO_SSL3)
+#if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
        meth=SSLv23_client_method();
-#elif !defined(NO_SSL3)
+#elif !defined(OPENSSL_NO_SSL3)
        meth=SSLv3_client_method();
-#elif !defined(NO_SSL2)
+#elif !defined(OPENSSL_NO_SSL2)
        meth=SSLv2_client_method();
 #endif
 
        apps_startup();
        c_Pause=0;
        c_quiet=0;
+       c_ign_eof=0;
        c_debug=0;
+       c_msg=0;
        c_showcerts=0;
 
        if (bio_err == NULL)
                bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 
-       if (    ((cbuf=Malloc(BUFSIZZ)) == NULL) ||
-               ((sbuf=Malloc(BUFSIZZ)) == NULL))
+       if (!load_config(bio_err, NULL))
+               goto end;
+
+       if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
+               ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
+               ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
                {
                BIO_printf(bio_err,"out of memory\n");
                goto end;
@@ -220,32 +485,117 @@ int MAIN(int argc, char **argv)
                        if (--argc < 1) goto bad;
                        cert_file= *(++argv);
                        }
+               else if (strcmp(*argv,"-sess_out") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       sess_out = *(++argv);
+                       }
+               else if (strcmp(*argv,"-sess_in") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       sess_in = *(++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)
+                       vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
+               else if (strcmp(*argv,"-verify_return_error") == 0)
+                       verify_return_error = 1;
+               else if (strcmp(*argv,"-prexit") == 0)
+                       prexit=1;
+               else if (strcmp(*argv,"-crlf") == 0)
+                       crlf=1;
                else if (strcmp(*argv,"-quiet") == 0)
+                       {
                        c_quiet=1;
+                       c_ign_eof=1;
+                       }
+               else if (strcmp(*argv,"-ign_eof") == 0)
+                       c_ign_eof=1;
                else if (strcmp(*argv,"-pause") == 0)
                        c_Pause=1;
                else if (strcmp(*argv,"-debug") == 0)
                        c_debug=1;
+#ifndef OPENSSL_NO_TLSEXT
+               else if (strcmp(*argv,"-tlsextdebug") == 0)
+                       c_tlsextdebug=1;
+#endif
+#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)
                        c_showcerts=1;
                else if (strcmp(*argv,"-nbio_test") == 0)
                        nbio_test=1;
                else if (strcmp(*argv,"-state") == 0)
                        state=1;
-#ifndef NO_SSL2
+#ifndef OPENSSL_NO_PSK
+                else if (strcmp(*argv,"-psk_identity") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       psk_identity=*(++argv);
+                       }
+                else if (strcmp(*argv,"-psk") == 0)
+                       {
+                        size_t j;
+
+                       if (--argc < 1) goto bad;
+                       psk_key=*(++argv);
+                       for (j = 0; j < strlen(psk_key); j++)
+                                {
+                                if (isxdigit((int)psk_key[j]))
+                                        continue;
+                                BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
+                                goto bad;
+                                }
+                       }
+#endif
+#ifndef OPENSSL_NO_SSL2
                else if (strcmp(*argv,"-ssl2") == 0)
                        meth=SSLv2_client_method();
 #endif
-#ifndef NO_SSL3
+#ifndef OPENSSL_NO_SSL3
                else if (strcmp(*argv,"-ssl3") == 0)
                        meth=SSLv3_client_method();
 #endif
-#ifndef NO_TLS1
+#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;
@@ -271,6 +621,14 @@ 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; }
+#ifndef OPENSSL_NO_TLSEXT
+               else if (strcmp(*argv,"-no_ticket") == 0)
+                       { off|=SSL_OP_NO_TICKET; }
+#endif
+               else if (strcmp(*argv,"-serverpref") == 0)
+                       off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
                else if (strcmp(*argv,"-cipher") == 0)
                        {
                        if (--argc < 1) goto bad;
@@ -279,6 +637,41 @@ int MAIN(int argc, char **argv)
 #ifdef FIONBIO
                else if (strcmp(*argv,"-nbio") == 0)
                        { c_nbio=1; }
+#endif
+               else if (strcmp(*argv,"-starttls") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       ++argv;
+                       if (strcmp(*argv,"smtp") == 0)
+                               starttls_proto = PROTO_SMTP;
+                       else if (strcmp(*argv,"pop3") == 0)
+                               starttls_proto = PROTO_POP3;
+                       else if (strcmp(*argv,"imap") == 0)
+                               starttls_proto = PROTO_IMAP;
+                       else if (strcmp(*argv,"ftp") == 0)
+                               starttls_proto = PROTO_FTP;
+                       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
                        {
@@ -296,9 +689,61 @@ bad:
                goto end;
                }
 
+       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())
+               {
+               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_c_out == NULL)
                {
-               if (c_quiet)
+               if (c_quiet && !c_debug && !c_msg)
                        {
                        bio_c_out=BIO_new(BIO_s_null());
                        }
@@ -309,7 +754,6 @@ bad:
                        }
                }
 
-       SSLeay_add_ssl_algorithms();
        ctx=SSL_CTX_new(meth);
        if (ctx == NULL)
                {
@@ -317,39 +761,104 @@ bad:
                goto end;
                }
 
+#ifndef OPENSSL_NO_PSK
+       if (psk_key != NULL)
+               {
+               if (c_debug)
+                       BIO_printf(bio_c_out, "PSK key given, setting client callback\n");
+               SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
+               }
+#endif
        if (bugs)
                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)
-               SSL_CTX_set_cipher_list(ctx,cipher);
+               if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
+               BIO_printf(bio_err,"error setting cipher list\n");
+               ERR_print_errors(bio_err);
+               goto end;
+       }
 #if 0
        else
                SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
 #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)) ||
                (!SSL_CTX_set_default_verify_paths(ctx)))
                {
-               /* BIO_printf(bio_err,"error seting default verify locations\n"); */
+               /* BIO_printf(bio_err,"error setting default verify locations\n"); */
                ERR_print_errors(bio_err);
                /* goto end; */
                }
 
-       SSL_load_error_strings();
+       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 *)SSL_new(ctx);
+       con=SSL_new(ctx);
+       if (sess_in)
+               {
+               SSL_SESSION *sess;
+               BIO *stmp = BIO_new_file(sess_in, "r");
+               if (!stmp)
+                       {
+                       BIO_printf(bio_err, "Can't open session file %s\n",
+                                               sess_in);
+                       ERR_print_errors(bio_err);
+                       goto end;
+                       }
+               sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
+               BIO_free(stmp);
+               if (!sess)
+                       {
+                       BIO_printf(bio_err, "Can't open session file %s\n",
+                                               sess_in);
+                       ERR_print_errors(bio_err);
+                       goto end;
+                       }
+               SSL_set_session(con, sess);
+               SSL_SESSION_free(sess);
+               }
+#ifndef OPENSSL_NO_TLSEXT
+       if (servername != NULL)
+               {
+               if (!SSL_set_tlsext_host_name(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)
+                {
+                kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
+               }
+#endif /* OPENSSL_NO_KRB5  */
 /*     SSL_set_cipher_list(con,"RC4-MD5"); */
 
 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);
@@ -370,7 +879,46 @@ 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;
+                       }
+
+               (void)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)
                {
@@ -383,9 +931,21 @@ re_start:
        if (c_debug)
                {
                con->debug=1;
-               BIO_set_callback(sbio,bio_dump_cb);
-               BIO_set_callback_arg(sbio,bio_c_out);
+               BIO_set_callback(sbio,bio_dump_callback);
+               BIO_set_callback_arg(sbio,(char *)bio_c_out);
+               }
+       if (c_msg)
+               {
+               SSL_set_msg_callback(con, msg_cb);
+               SSL_set_msg_callback_arg(con, bio_c_out);
+               }
+#ifndef OPENSSL_NO_TLSEXT
+       if (c_tlsextdebug)
+               {
+               SSL_set_tlsext_debug_callback(con, tlsext_cb);
+               SSL_set_tlsext_debug_arg(con, bio_c_out);
                }
+#endif
 
        SSL_set_bio(con,sbio,sbio);
        SSL_set_connect_state(con);
@@ -404,6 +964,95 @@ re_start:
        sbuf_len=0;
        sbuf_off=0;
 
+       /* This is an ugly hack that does a lot of assumptions */
+       /* We do have to handle multi-line responses which may come
+          in a single packet or not. We therefore have to use
+          BIO_gets() which does need a buffering BIO. So during
+          the initial chitchat we do push a buffering BIO into the
+          chain that is removed again later on to not disturb the
+          rest of the s_client operation. */
+       if (starttls_proto == PROTO_SMTP)
+               {
+               int foundit=0;
+               BIO *fbio = BIO_new(BIO_f_buffer());
+               BIO_push(fbio, sbio);
+               /* wait for multi-line response to end from SMTP */
+               do
+                       {
+                       mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
+                       }
+               while (mbuf_len>3 && mbuf[3]=='-');
+               /* STARTTLS command requires EHLO... */
+               BIO_printf(fbio,"EHLO openssl.client.net\r\n");
+               (void)BIO_flush(fbio);
+               /* wait for multi-line response to end EHLO SMTP response */
+               do
+                       {
+                       mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
+                       if (strstr(mbuf,"STARTTLS"))
+                               foundit=1;
+                       }
+               while (mbuf_len>3 && mbuf[3]=='-');
+               (void)BIO_flush(fbio);
+               BIO_pop(fbio);
+               BIO_free(fbio);
+               if (!foundit)
+                       BIO_printf(bio_err,
+                                  "didn't found starttls in server response,"
+                                  " try anyway...\n");
+               BIO_printf(sbio,"STARTTLS\r\n");
+               BIO_read(sbio,sbuf,BUFSIZZ);
+               }
+       else if (starttls_proto == PROTO_POP3)
+               {
+               BIO_read(sbio,mbuf,BUFSIZZ);
+               BIO_printf(sbio,"STLS\r\n");
+               BIO_read(sbio,sbuf,BUFSIZZ);
+               }
+       else if (starttls_proto == PROTO_IMAP)
+               {
+               int foundit=0;
+               BIO *fbio = BIO_new(BIO_f_buffer());
+               BIO_push(fbio, sbio);
+               BIO_gets(fbio,mbuf,BUFSIZZ);
+               /* STARTTLS command requires CAPABILITY... */
+               BIO_printf(fbio,". CAPABILITY\r\n");
+               (void)BIO_flush(fbio);
+               /* wait for multi-line CAPABILITY response */
+               do
+                       {
+                       mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
+                       if (strstr(mbuf,"STARTTLS"))
+                               foundit=1;
+                       }
+               while (mbuf_len>3 && mbuf[0]!='.');
+               (void)BIO_flush(fbio);
+               BIO_pop(fbio);
+               BIO_free(fbio);
+               if (!foundit)
+                       BIO_printf(bio_err,
+                                  "didn't found STARTTLS in server response,"
+                                  " try anyway...\n");
+               BIO_printf(sbio,". STARTTLS\r\n");
+               BIO_read(sbio,sbuf,BUFSIZZ);
+               }
+       else if (starttls_proto == PROTO_FTP)
+               {
+               BIO *fbio = BIO_new(BIO_f_buffer());
+               BIO_push(fbio, sbio);
+               /* wait for multi-line response to end from FTP */
+               do
+                       {
+                       mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
+                       }
+               while (mbuf_len>3 && mbuf[3]=='-');
+               (void)BIO_flush(fbio);
+               BIO_pop(fbio);
+               BIO_free(fbio);
+               BIO_printf(sbio,"AUTH TLS\r\n");
+               BIO_read(sbio,sbuf,BUFSIZZ);
+               }
+
        for (;;)
                {
                FD_ZERO(&readfds);
@@ -420,9 +1069,33 @@ 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
+                               if (sess_out)
+                                       {
+                                       BIO *stmp = BIO_new_file(sess_out, "w");
+                                       if (stmp)
+                                               {
+                                               PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
+                                               BIO_free(stmp);
+                                               }
+                                       else 
+                                               BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
+                                       }
                                print_stuff(bio_c_out,con,full_log);
                                if (full_log > 0) full_log--;
 
+                               if (starttls_proto)
+                                       {
+                                       BIO_printf(bio_err,"%s",mbuf);
+                                       /* We don't need to know any more */
+                                       starttls_proto = PROTO_OFF;
+                                       }
+
                                if (reconnect)
                                        {
                                        reconnect--;
@@ -439,22 +1112,89 @@ re_start:
 
                if (!ssl_pending)
                        {
-#ifndef WINDOWS
+#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined (OPENSSL_SYS_BEOS_R5)
                        if (tty_on)
                                {
-                               if (read_tty)  FD_SET(fileno(stdin),&readfds);
-                               if (write_tty) FD_SET(fileno(stdout),&writefds);
+                               if (read_tty)  openssl_fdset(fileno(stdin),&readfds);
+                               if (write_tty) openssl_fdset(fileno(stdout),&writefds);
                                }
-#endif
                        if (read_ssl)
-                               FD_SET(SSL_get_fd(con),&readfds);
+                               openssl_fdset(SSL_get_fd(con),&readfds);
                        if (write_ssl)
-                               FD_SET(SSL_get_fd(con),&writefds);
-
+                               openssl_fdset(SSL_get_fd(con),&writefds);
+#else
+                       if(!tty_on || !write_tty) {
+                               if (read_ssl)
+                                       openssl_fdset(SSL_get_fd(con),&readfds);
+                               if (write_ssl)
+                                       openssl_fdset(SSL_get_fd(con),&writefds);
+                       }
+#endif
 /*                     printf("mode tty(%d %d%d) ssl(%d%d)\n",
                                tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
 
-                       i=select(width,&readfds,&writefds,NULL,NULL);
+                       /* 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 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
+                        * are any keypresses. Note: this is a hack, in a proper
+                        * Windows application we wouldn't do this.
+                        */
+                       i=0;
+                       if(!write_tty) {
+                               if(read_tty) {
+                                       tv.tv_sec = 1;
+                                       tv.tv_usec = 0;
+                                       i=select(width,(void *)&readfds,(void *)&writefds,
+                                                NULL,&tv);
+#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;
+#endif
+                               } 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);
+                       }
+#elif defined(OPENSSL_SYS_BEOS_R5)
+                       /* Under BeOS-R5 the situation is similar to DOS */
+                       i=0;
+                       stdin_set = 0;
+                       (void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
+                       if(!write_tty) {
+                               if(read_tty) {
+                                       tv.tv_sec = 1;
+                                       tv.tv_usec = 0;
+                                       i=select(width,(void *)&readfds,(void *)&writefds,
+                                                NULL,&tv);
+                                       if (read(fileno(stdin), sbuf, 0) >= 0)
+                                               stdin_set = 1;
+                                       if (!i && (stdin_set != 1 || !read_tty))
+                                               continue;
+                               } else  i=select(width,(void *)&readfds,(void *)&writefds,
+                                        NULL,NULL);
+                       }
+                       (void)fcntl(fileno(stdin), F_SETFL, 0);
+#else
+                       i=select(width,(void *)&readfds,(void *)&writefds,
+                                NULL,NULL);
+#endif
                        if ( i < 0)
                                {
                                BIO_printf(bio_err,"bad select %d\n",
@@ -531,10 +1271,17 @@ re_start:
                                goto shut;
                                }
                        }
-#ifndef WINDOWS
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
+               /* Assume Windows/DOS/BeOS can always write */
+               else if (!ssl_pending && write_tty)
+#else
                else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
+#endif
                        {
-                       i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
+#ifdef CHARSET_EBCDIC
+                       ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
+#endif
+                       i=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);
 
                        if (i <= 0)
                                {
@@ -551,7 +1298,6 @@ re_start:
                                write_tty=0;
                                }
                        }
-#endif
                else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
                        {
 #ifdef RENEG
@@ -606,18 +1352,52 @@ printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240
                                }
                        }
 
-#ifndef WINDOWS
+#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())
+#elif defined(OPENSSL_SYS_BEOS_R5)
+               else if (stdin_set)
+#else
                else if (FD_ISSET(fileno(stdin),&readfds))
+#endif
                        {
-                       i=read(fileno(stdin),cbuf,BUFSIZZ);
+                       if (crlf)
+                               {
+                               int j, lf_num;
+
+                               i=raw_read_stdin(cbuf,BUFSIZZ/2);
+                               lf_num = 0;
+                               /* both loops are skipped when i <= 0 */
+                               for (j = 0; j < i; j++)
+                                       if (cbuf[j] == '\n')
+                                               lf_num++;
+                               for (j = i-1; j >= 0; j--)
+                                       {
+                                       cbuf[j+lf_num] = cbuf[j];
+                                       if (cbuf[j] == '\n')
+                                               {
+                                               lf_num--;
+                                               i++;
+                                               cbuf[j+lf_num] = '\r';
+                                               }
+                                       }
+                               assert(lf_num == 0);
+                               }
+                       else
+                               i=raw_read_stdin(cbuf,BUFSIZZ);
 
-                       if ((!c_quiet) && ((i <= 0) || (cbuf[0] == 'Q')))
+                       if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
                                {
                                BIO_printf(bio_err,"DONE\n");
                                goto shut;
                                }
 
-                       if ((!c_quiet) && (cbuf[0] == 'R'))
+                       if ((!c_ign_eof) && (cbuf[0] == 'R'))
                                {
                                BIO_printf(bio_err,"RENEGOTIATING\n");
                                SSL_renegotiate(con);
@@ -627,29 +1407,45 @@ printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240
                                {
                                cbuf_len=i;
                                cbuf_off=0;
+#ifdef CHARSET_EBCDIC
+                               ebcdic2ascii(cbuf, cbuf, i);
+#endif
                                }
 
                        write_ssl=1;
                        read_tty=0;
                        }
-#endif
                }
 shut:
+       if (in_init)
+               print_stuff(bio_c_out,con,full_log);
        SSL_shutdown(con);
        SHUTDOWN(SSL_get_fd(con));
        ret=0;
 end:
-       if (con != NULL) SSL_free(con);
-       if (con2 != NULL) SSL_free(con2);
+       if (con != NULL)
+               {
+               if (prexit != 0)
+                       print_stuff(bio_c_out,con,1);
+               SSL_free(con);
+               }
        if (ctx != NULL) SSL_CTX_free(ctx);
-       if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); Free(cbuf); }
-       if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); Free(sbuf); }
+       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); }
        if (bio_c_out != NULL)
                {
                BIO_free(bio_c_out);
                bio_c_out=NULL;
                }
-       EXIT(ret);
+       apps_shutdown();
+       OPENSSL_EXIT(ret);
        }
 
 
@@ -657,27 +1453,34 @@ 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)
                {
+               int got_a_chain = 0;
+
                sk=SSL_get_peer_cert_chain(s);
                if (sk != NULL)
                        {
+                       got_a_chain = 1; /* we don't have it for SSL2 (yet) */
+
                        BIO_printf(bio,"---\nCertificate chain\n");
                        for (i=0; i<sk_X509_num(sk); i++)
                                {
                                X509_NAME_oneline(X509_get_subject_name(
-                                       sk_X509_value(sk,i)),buf,BUFSIZ);
+                                       sk_X509_value(sk,i)),buf,sizeof buf);
                                BIO_printf(bio,"%2d s:%s\n",i,buf);
                                X509_NAME_oneline(X509_get_issuer_name(
-                                       sk_X509_value(sk,i)),buf,BUFSIZ);
+                                       sk_X509_value(sk,i)),buf,sizeof buf);
                                BIO_printf(bio,"   i:%s\n",buf);
                                if (c_showcerts)
                                        PEM_write_bio_X509(bio,sk_X509_value(sk,i));
@@ -689,13 +1492,13 @@ static void print_stuff(BIO *bio, SSL *s, int full)
                if (peer != NULL)
                        {
                        BIO_printf(bio,"Server certificate\n");
-                       if (!c_showcerts) /* Redundant if we showed the whole chain */
+                       if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
                                PEM_write_bio_X509(bio,peer);
                        X509_NAME_oneline(X509_get_subject_name(peer),
-                               buf,BUFSIZ);
+                               buf,sizeof buf);
                        BIO_printf(bio,"subject=%s\n",buf);
                        X509_NAME_oneline(X509_get_issuer_name(peer),
-                               buf,BUFSIZ);
+                               buf,sizeof buf);
                        BIO_printf(bio,"issuer=%s\n",buf);
                        }
                else
@@ -717,9 +1520,14 @@ static void print_stuff(BIO *bio, SSL *s, int full)
                        {
                        BIO_printf(bio,"---\nNo client certificate CA names sent\n");
                        }
-               p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
+               p=SSL_get_shared_ciphers(s,buf,sizeof buf);
                if (p != NULL)
                        {
+                       /* This works only for SSL 2.  In later protocol
+                        * versions, the client does not know what other
+                        * ciphers (in addition to the one to be used
+                        * in the current connection) the server supports. */
+
                        BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
                        j=i=0;
                        while (*p)
@@ -757,9 +1565,19 @@ 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)
                X509_free(peer);
+       /* flush, or debugging output gets mixed with http response */
+       (void)BIO_flush(bio);
        }