VMS support bug fixes.

[thirdparty/openssl.git] / apps / s_server.c

/* apps/s_server.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

/* 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(__DECC) && !defined(__U_INT)
#define __U_INT
typedef unsigned int u_int;
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef NO_STDIO
#define APPS_WIN16
#endif
#include <openssl/lhash.h>
#include <openssl/bn.h>
#define USE_SOCKETS
#include "apps.h"
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/x509.h>
#include <openssl/ssl.h>
#include "s_apps.h"

#if (defined(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
#endif

#ifndef NO_RSA
static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int 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 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);
#ifndef NO_DH
static DH *load_dh_param(void );
static DH *get_dh512(void);
#endif
/* static void s_server_init(void);*/

#ifndef S_ISDIR
#if defined(VMS) && !defined(__DECC)
#define S_ISDIR(a)      (((a) & S_IFMT) == S_IFDIR)
#else
#define S_ISDIR(a)      (((a) & _S_IFMT) == _S_IFDIR)
#endif
#endif

#ifndef NO_DH
static unsigned char dh512_p[]={
        0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
        0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
        0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
        0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
        0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
        0x47,0x74,0xE8,0x33,
        };
static unsigned char dh512_g[]={
        0x02,
        };

static DH *get_dh512(void)
        {
        DH *dh=NULL;

        if ((dh=DH_new()) == NULL) return(NULL);
        dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
        dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
        if ((dh->p == NULL) || (dh->g == NULL))
                return(NULL);
        return(dh);
        }
#endif

/* static int load_CA(SSL_CTX *ctx, char *file);*/

#undef BUFSIZZ
#define BUFSIZZ 16*1024
static int bufsize=32;
static int accept_socket= -1;

#define TEST_CERT       "server.pem"
#undef PROG
#define PROG            s_server_main

#define DH_PARAM        "server.pem"

extern int verify_depth;

static char *cipher=NULL;
static int s_server_verify=SSL_VERIFY_NONE;
static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
static char *s_dcert_file=NULL,*s_dkey_file=NULL;
#ifdef FIONBIO
static int s_nbio=0;
#endif
static int s_nbio_test=0;
static SSL_CTX *ctx=NULL;
static int www=0;

static BIO *bio_s_out=NULL;
static int s_debug=0;
static int s_quiet=0;

#if 0
static void s_server_init(void)
        {
        cipher=NULL;
        s_server_verify=SSL_VERIFY_NONE;
        s_dcert_file=NULL;
        s_dkey_file=NULL;
        s_cert_file=TEST_CERT;
        s_key_file=NULL;
#ifdef FIONBIO
        s_nbio=0;
#endif
        s_nbio_test=0;
        ctx=NULL;
        www=0;

        bio_s_out=NULL;
        s_debug=0;
        s_quiet=0;
        }
#endif

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," -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," -cert arg     - certificate file to use, PEM format assumed\n");
        BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
        BIO_printf(bio_err," -key arg      - RSA file to use, PEM format assumed, in cert file if\n");
        BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
        BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
        BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
#ifdef FIONBIO
        BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
#endif
        BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
        BIO_printf(bio_err," -debug        - Print more output\n");
        BIO_printf(bio_err," -state        - Print the SSL states\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," -nocert       - Don't use any certificates (Anon-DH)\n");
        BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
        BIO_printf(bio_err," -quiet        - No server output\n");
        BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
        BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
        BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
        BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
        BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
        BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
        BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
        BIO_printf(bio_err," -bugs         - Turn on SSL bug compatability\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");
        }

static int local_argc=0;
static char **local_argv;
static int hack=0;

int MAIN(int argc, char *argv[])
        {
        short port=PORT;
        char *CApath=NULL,*CAfile=NULL;
        char *context = NULL;
        int badop=0,bugs=0;
        int ret=1;
        int off=0;
        int no_tmp_rsa=0,nocert=0;
        int state=0;
        SSL_METHOD *meth=NULL;
#ifndef NO_DH
        DH *dh=NULL;
#endif

#if !defined(NO_SSL2) && !defined(NO_SSL3)
        meth=SSLv23_server_method();
#elif !defined(NO_SSL3)
        meth=SSLv3_server_method();
#elif !defined(NO_SSL2)
        meth=SSLv2_server_method();
#endif

        local_argc=argc;
        local_argv=argv;

        apps_startup();
        s_quiet=0;
        s_debug=0;

        if (bio_err == NULL)
                bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);

        verify_depth=0;
#ifdef FIONBIO
        s_nbio=0;
#endif
        s_nbio_test=0;

        argc--;
        argv++;

        while (argc >= 1)
                {
                if      ((strcmp(*argv,"-port") == 0) ||
                         (strcmp(*argv,"-accept") == 0))
                        {
                        if (--argc < 1) goto bad;
                        if (!extract_port(*(++argv),&port))
                                goto bad;
                        }
                else if (strcmp(*argv,"-verify") == 0)
                        {
                        s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
                        if (--argc < 1) goto bad;
                        verify_depth=atoi(*(++argv));
                        BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
                        }
                else if (strcmp(*argv,"-Verify") == 0)
                        {
                        s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
                                SSL_VERIFY_CLIENT_ONCE;
                        if (--argc < 1) goto bad;
                        verify_depth=atoi(*(++argv));
                        BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
                        }
                else if (strcmp(*argv,"-context") == 0)
                        {
                        if (--argc < 1) goto bad;
                        context= *(++argv);
                        }
                else if (strcmp(*argv,"-cert") == 0)
                        {
                        if (--argc < 1) goto bad;
                        s_cert_file= *(++argv);
                        }
                else if (strcmp(*argv,"-key") == 0)
                        {
                        if (--argc < 1) goto bad;
                        s_key_file= *(++argv);
                        }
                else if (strcmp(*argv,"-dcert") == 0)
                        {
                        if (--argc < 1) goto bad;
                        s_dcert_file= *(++argv);
                        }
                else if (strcmp(*argv,"-dkey") == 0)
                        {
                        if (--argc < 1) goto bad;
                        s_dkey_file= *(++argv);
                        }
                else if (strcmp(*argv,"-nocert") == 0)
                        {
                        nocert=1;
                        }
                else if (strcmp(*argv,"-CApath") == 0)
                        {
                        if (--argc < 1) goto bad;
                        CApath= *(++argv);
                        }
                else if (strcmp(*argv,"-cipher") == 0)
                        {
                        if (--argc < 1) goto bad;
                        cipher= *(++argv);
                        }
                else if (strcmp(*argv,"-CAfile") == 0)
                        {
                        if (--argc < 1) goto bad;
                        CAfile= *(++argv);
                        }
#ifdef FIONBIO  
                else if (strcmp(*argv,"-nbio") == 0)
                        { s_nbio=1; }
#endif
                else if (strcmp(*argv,"-nbio_test") == 0)
                        {
#ifdef FIONBIO  
                        s_nbio=1;
#endif
                        s_nbio_test=1;
                        }
                else if (strcmp(*argv,"-debug") == 0)
                        { s_debug=1; }
                else if (strcmp(*argv,"-hack") == 0)
                        { hack=1; }
                else if (strcmp(*argv,"-state") == 0)
                        { state=1; }
                else if (strcmp(*argv,"-quiet") == 0)
                        { s_quiet=1; }
                else if (strcmp(*argv,"-bugs") == 0)
                        { bugs=1; }
                else if (strcmp(*argv,"-no_tmp_rsa") == 0)
                        { no_tmp_rsa=1; }
                else if (strcmp(*argv,"-www") == 0)
                        { www=1; }
                else if (strcmp(*argv,"-WWW") == 0)
                        { www=2; }
                else if (strcmp(*argv,"-no_ssl2") == 0)
                        { off|=SSL_OP_NO_SSLv2; }
                else if (strcmp(*argv,"-no_ssl3") == 0)
                        { off|=SSL_OP_NO_SSLv3; }
                else if (strcmp(*argv,"-no_tls1") == 0)
                        { off|=SSL_OP_NO_TLSv1; }
#ifndef NO_SSL2
                else if (strcmp(*argv,"-ssl2") == 0)
                        { meth=SSLv2_server_method(); }
#endif
#ifndef NO_SSL3
                else if (strcmp(*argv,"-ssl3") == 0)
                        { meth=SSLv3_server_method(); }
#endif
#ifndef NO_TLS1
                else if (strcmp(*argv,"-tls1") == 0)
                        { meth=TLSv1_server_method(); }
#endif
                else
                        {
                        BIO_printf(bio_err,"unknown option %s\n",*argv);
                        badop=1;
                        break;
                        }
                argc--;
                argv++;
                }
        if (badop)
                {
bad:
                sv_usage();
                goto end;
                }

        if (bio_s_out == NULL)
                {
                if (s_quiet && !s_debug)
                        {
                        bio_s_out=BIO_new(BIO_s_null());
                        }
                else
                        {
                        if (bio_s_out == NULL)
                                bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
                        }
                }

#if !defined(NO_RSA) || !defined(NO_DSA)
        if (nocert)
#endif
                {
                s_cert_file=NULL;
                s_key_file=NULL;
                s_dcert_file=NULL;
                s_dkey_file=NULL;
                }

        SSL_load_error_strings();
        SSLeay_add_ssl_algorithms();

        ctx=SSL_CTX_new(meth);
        if (ctx == NULL)
                {
                ERR_print_errors(bio_err);
                goto end;
                }

        SSL_CTX_set_quiet_shutdown(ctx,1);
        if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
        if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
        SSL_CTX_set_options(ctx,off);
        if (hack) SSL_CTX_set_options(ctx,SSL_OP_NON_EXPORT_FIRST);

        if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);

        SSL_CTX_sess_set_cache_size(ctx,128);

#if 0
        if (cipher == NULL) cipher=getenv("SSL_CIPHER");
#endif

#if 0
        if (s_cert_file == NULL)
                {
                BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
                goto end;
                }
#endif

        if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
                (!SSL_CTX_set_default_verify_paths(ctx)))
                {
                /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
                ERR_print_errors(bio_err);
                /* goto end; */
                }

#ifndef NO_DH
        /* EAY EAY EAY evil hack */
        dh=load_dh_param();
        if (dh != NULL)
                {
                BIO_printf(bio_s_out,"Setting temp DH parameters\n");
                }
        else
                {
                BIO_printf(bio_s_out,"Using default temp DH parameters\n");
                dh=get_dh512();
                }
        BIO_flush(bio_s_out);

        SSL_CTX_set_tmp_dh(ctx,dh);
        DH_free(dh);
#endif
        
        if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
                goto end;
        if (s_dcert_file != NULL)
                {
                if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
                        goto end;
                }

#ifndef NO_RSA
#if 1
        SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
#else
        if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
                {
                RSA *rsa;

                BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
                BIO_flush(bio_s_out);

                rsa=RSA_generate_key(512,RSA_F4,NULL);

                if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
                        {
                        ERR_print_errors(bio_err);
                        goto end;
                        }
                RSA_free(rsa);
                BIO_printf(bio_s_out,"\n");
                }
#endif
#endif

        if (cipher != NULL)
                SSL_CTX_set_cipher_list(ctx,cipher);
        SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);

        SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));

        BIO_printf(bio_s_out,"ACCEPT\n");
        if (www)
                do_server(port,&accept_socket,www_body, context);
        else
                do_server(port,&accept_socket,sv_body, context);
        print_stats(bio_s_out,ctx);
        ret=0;
end:
        if (ctx != NULL) SSL_CTX_free(ctx);
        if (bio_s_out != NULL)
                {
                BIO_free(bio_s_out);
                bio_s_out=NULL;
                }
        EXIT(ret);
        }

static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
        {
        BIO_printf(bio,"%4ld items in the session cache\n",
                SSL_CTX_sess_number(ssl_ctx));
        BIO_printf(bio,"%4d client connects (SSL_connect())\n",
                SSL_CTX_sess_connect(ssl_ctx));
        BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
                SSL_CTX_sess_connect_renegotiate(ssl_ctx));
        BIO_printf(bio,"%4d client connects that finished\n",
                SSL_CTX_sess_connect_good(ssl_ctx));
        BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
                SSL_CTX_sess_accept(ssl_ctx));
        BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
                SSL_CTX_sess_accept_renegotiate(ssl_ctx));
        BIO_printf(bio,"%4d server accepts that finished\n",
                SSL_CTX_sess_accept_good(ssl_ctx));
        BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
        BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
        BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
        BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
        BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
                SSL_CTX_sess_cache_full(ssl_ctx),
                SSL_CTX_sess_get_cache_size(ssl_ctx));
        }

static int sv_body(char *hostname, int s, unsigned char *context)
        {
        char *buf=NULL;
        fd_set readfds;
        int ret=1,width;
        int k,i;
        unsigned long l;
        SSL *con=NULL;
        BIO *sbio;

        if ((buf=Malloc(bufsize)) == NULL)
                {
                BIO_printf(bio_err,"out of memory\n");
                goto err;
                }
#ifdef FIONBIO  
        if (s_nbio)
                {
                unsigned long sl=1;

                if (!s_quiet)
                        BIO_printf(bio_err,"turning on non blocking io\n");
                if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
                        ERR_print_errors(bio_err);
                }
#endif

        if (con == NULL) {
                con=(SSL *)SSL_new(ctx);
                if(context)
                      SSL_set_session_id_context(con, context,
                                                 strlen((char *)context));
        }
        SSL_clear(con);

        sbio=BIO_new_socket(s,BIO_NOCLOSE);
        if (s_nbio_test)
                {
                BIO *test;

                test=BIO_new(BIO_f_nbio_test());
                sbio=BIO_push(test,sbio);
                }
        SSL_set_bio(con,sbio,sbio);
        SSL_set_accept_state(con);
        /* SSL_set_fd(con,s); */

        if (s_debug)
                {
                con->debug=1;
                BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
                BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
                }

        width=s+1;
        for (;;)
                {
                FD_ZERO(&readfds);
#ifndef WINDOWS
                FD_SET(fileno(stdin),&readfds);
#endif
                FD_SET(s,&readfds);
                /* Note: under VMS with SOCKETSHR the second parameter is
                 * currently of type (int *) whereas under other systems
                 * it is (void *) if you don't have a cast it will choke
                 * the compiler: if you do have a cast then you can either
                 * go for (int *) or (void *).
                 */
                i=select(width,(void *)&readfds,NULL,NULL,NULL);
                if (i <= 0) continue;
                if (FD_ISSET(fileno(stdin),&readfds))
                        {
                        i=read(fileno(stdin),buf,bufsize);
                        if (!s_quiet)
                                {
                                if ((i <= 0) || (buf[0] == 'Q'))
                                        {
                                        BIO_printf(bio_s_out,"DONE\n");
                                        SHUTDOWN(s);
                                        close_accept_socket();
                                        ret= -11;
                                        goto err;
                                        }
                                if ((i <= 0) || (buf[0] == 'q'))
                                        {
                                        BIO_printf(bio_s_out,"DONE\n");
                                        SHUTDOWN(s);
        /*                              close_accept_socket();
                                        ret= -11;*/
                                        goto err;
                                        }
                                if ((buf[0] == 'r') && 
                                        ((buf[1] == '\n') || (buf[1] == '\r')))
                                        {
                                        SSL_renegotiate(con);
                                        i=SSL_do_handshake(con);
                                        printf("SSL_do_handshake -> %d\n",i);
                                        i=0; /*13; */
                                        continue;
                                        /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
                                        }
                                if ((buf[0] == 'R') &&
                                        ((buf[1] == '\n') || (buf[1] == '\r')))
                                        {
                                        SSL_set_verify(con,
                                                SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
                                        SSL_renegotiate(con);
                                        i=SSL_do_handshake(con);
                                        printf("SSL_do_handshake -> %d\n",i);
                                        i=0; /* 13; */
                                        continue;
                                        /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
                                        }
                                if (buf[0] == 'P')
                                        {
                                        static char *str="Lets print some clear text\n";
                                        BIO_write(SSL_get_wbio(con),str,strlen(str));
                                        }
                                if (buf[0] == 'S')
                                        {
                                        print_stats(bio_s_out,SSL_get_SSL_CTX(con));
                                        }
                                }
                        l=k=0;
                        for (;;)
                                {
                                /* should do a select for the write */
#ifdef RENEG
{ static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
#endif
                                k=SSL_write(con,&(buf[l]),(unsigned int)i);
                                switch (SSL_get_error(con,k))
                                        {
                                case SSL_ERROR_NONE:
                                        break;
                                case SSL_ERROR_WANT_WRITE:
                                case SSL_ERROR_WANT_READ:
                                case SSL_ERROR_WANT_X509_LOOKUP:
                                        BIO_printf(bio_s_out,"Write BLOCK\n");
                                        break;
                                case SSL_ERROR_SYSCALL:
                                case SSL_ERROR_SSL:
                                        BIO_printf(bio_s_out,"ERROR\n");
                                        ERR_print_errors(bio_err);
                                        ret=1;
                                        goto err;
                                        /* break; */
                                case SSL_ERROR_ZERO_RETURN:
                                        BIO_printf(bio_s_out,"DONE\n");
                                        ret=1;
                                        goto err;
                                        }
                                l+=k;
                                i-=k;
                                if (i <= 0) break;
                                }
                        }
                if (FD_ISSET(s,&readfds))
                        {
                        if (!SSL_is_init_finished(con))
                                {
                                i=init_ssl_connection(con);
                                
                                if (i < 0)
                                        {
                                        ret=0;
                                        goto err;
                                        }
                                else if (i == 0)
                                        {
                                        ret=1;
                                        goto err;
                                        }
                                }
                        else
                                {
again:  
                                i=SSL_read(con,(char *)buf,bufsize);
                                switch (SSL_get_error(con,i))
                                        {
                                case SSL_ERROR_NONE:
                                        write(fileno(stdout),buf,
                                                (unsigned int)i);
                                        if (SSL_pending(con)) goto again;
                                        break;
                                case SSL_ERROR_WANT_WRITE:
                                case SSL_ERROR_WANT_READ:
                                case SSL_ERROR_WANT_X509_LOOKUP:
                                        BIO_printf(bio_s_out,"Read BLOCK\n");
                                        break;
                                case SSL_ERROR_SYSCALL:
                                case SSL_ERROR_SSL:
                                        BIO_printf(bio_s_out,"ERROR\n");
                                        ERR_print_errors(bio_err);
                                        ret=1;
                                        goto err;
                                case SSL_ERROR_ZERO_RETURN:
                                        BIO_printf(bio_s_out,"DONE\n");
                                        ret=1;
                                        goto err;
                                        }
                                }
                        }
                }
err:
        BIO_printf(bio_s_out,"shutting down SSL\n");
#if 1
        SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
#else
        SSL_shutdown(con);
#endif
        if (con != NULL) SSL_free(con);
        BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
        if (buf != NULL)
                {
                memset(buf,0,bufsize);
                Free(buf);
                }
        if (ret >= 0)
                BIO_printf(bio_s_out,"ACCEPT\n");
        return(ret);
        }

static void close_accept_socket(void)
        {
        BIO_printf(bio_err,"shutdown accept socket\n");
        if (accept_socket >= 0)
                {
                SHUTDOWN2(accept_socket);
                }
        }

static int init_ssl_connection(SSL *con)
        {
        int i;
        const char *str;
        X509 *peer;
        long verify_error;
        MS_STATIC char buf[BUFSIZ];

        if ((i=SSL_accept(con)) <= 0)
                {
                if (BIO_sock_should_retry(i))
                        {
                        BIO_printf(bio_s_out,"DELAY\n");
                        return(1);
                        }

                BIO_printf(bio_err,"ERROR\n");
                verify_error=SSL_get_verify_result(con);
                if (verify_error != X509_V_OK)
                        {
                        BIO_printf(bio_err,"verify error:%s\n",
                                X509_verify_cert_error_string(verify_error));
                        }
                else
                        ERR_print_errors(bio_err);
                return(0);
                }

        PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));

        peer=SSL_get_peer_certificate(con);
        if (peer != NULL)
                {
                BIO_printf(bio_s_out,"Client certificate\n");
                PEM_write_bio_X509(bio_s_out,peer);
                X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
                BIO_printf(bio_s_out,"subject=%s\n",buf);
                X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
                BIO_printf(bio_s_out,"issuer=%s\n",buf);
                X509_free(peer);
                }

        if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
                BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
        str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
        BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
        if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
        if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
                TLS1_FLAGS_TLS_PADDING_BUG)
                BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");

        return(1);
        }

#ifndef NO_DH
static DH *load_dh_param(void)
        {
        DH *ret=NULL;
        BIO *bio;

        if ((bio=BIO_new_file(DH_PARAM,"r")) == NULL)
                goto err;
        ret=PEM_read_bio_DHparams(bio,NULL,NULL);
err:
        if (bio != NULL) BIO_free(bio);
        return(ret);
        }
#endif

#if 0
static int load_CA(SSL_CTX *ctx, char *file)
        {
        FILE *in;
        X509 *x=NULL;

        if ((in=fopen(file,"r")) == NULL)
                return(0);

        for (;;)
                {
                if (PEM_read_X509(in,&x,NULL) == NULL)
                        break;
                SSL_CTX_add_client_CA(ctx,x);
                }
        if (x != NULL) X509_free(x);
        fclose(in);
        return(1);
        }
#endif

static int www_body(char *hostname, int s, unsigned char *context)
        {
        char *buf=NULL;
        int ret=1;
        int i,j,k,blank,dot;
        struct stat st_buf;
        SSL *con;
        SSL_CIPHER *c;
        BIO *io,*ssl_bio,*sbio;
        long total_bytes;

        buf=Malloc(bufsize);
        if (buf == NULL) return(0);
        io=BIO_new(BIO_f_buffer());
        ssl_bio=BIO_new(BIO_f_ssl());
        if ((io == NULL) || (ssl_bio == NULL)) goto err;

#ifdef FIONBIO  
        if (s_nbio)
                {
                unsigned long sl=1;

                if (!s_quiet)
                        BIO_printf(bio_err,"turning on non blocking io\n");
                if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
                        ERR_print_errors(bio_err);
                }
#endif

        /* lets make the output buffer a reasonable size */
        if (!BIO_set_write_buffer_size(io,bufsize)) goto err;

        if ((con=(SSL *)SSL_new(ctx)) == NULL) goto err;
        if(context) SSL_set_session_id_context(con, context,
                                               strlen((char *)context));

        sbio=BIO_new_socket(s,BIO_NOCLOSE);
        if (s_nbio_test)
                {
                BIO *test;

                test=BIO_new(BIO_f_nbio_test());
                sbio=BIO_push(test,sbio);
                }
        SSL_set_bio(con,sbio,sbio);
        SSL_set_accept_state(con);

        /* SSL_set_fd(con,s); */
        BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
        BIO_push(io,ssl_bio);

        if (s_debug)
                {
                con->debug=1;
                BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
                BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
                }

        blank=0;
        for (;;)
                {
                if (hack)
                        {
                        i=SSL_accept(con);

                        switch (SSL_get_error(con,i))
                                {
                        case SSL_ERROR_NONE:
                                break;
                        case SSL_ERROR_WANT_WRITE:
                        case SSL_ERROR_WANT_READ:
                        case SSL_ERROR_WANT_X509_LOOKUP:
                                continue;
                        case SSL_ERROR_SYSCALL:
                        case SSL_ERROR_SSL:
                        case SSL_ERROR_ZERO_RETURN:
                                ret=1;
                                goto err;
                                /* break; */
                                }

                        SSL_renegotiate(con);
                        SSL_write(con,NULL,0);
                        }

                i=BIO_gets(io,buf,bufsize-1);
                if (i < 0) /* error */
                        {
                        if (!BIO_should_retry(io))
                                {
                                if (!s_quiet)
                                        ERR_print_errors(bio_err);
                                goto err;
                                }
                        else
                                {
                                BIO_printf(bio_s_out,"read R BLOCK\n");
#ifndef MSDOS
                                sleep(1);
#endif
                                continue;
                                }
                        }
                else if (i == 0) /* end of input */
                        {
                        ret=1;
                        goto end;
                        }

                /* else we have data */
                if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
                        ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
                        {
                        char *p;
                        X509 *peer;
                        STACK_OF(SSL_CIPHER) *sk;
                        static char *space="                          ";

                        BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
                        BIO_puts(io,"<HTML><BODY BGCOLOR=ffffff>\n");
                        BIO_puts(io,"<pre>\n");
/*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
                        BIO_puts(io,"\n");
                        for (i=0; i<local_argc; i++)
                                {
                                BIO_puts(io,local_argv[i]);
                                BIO_write(io," ",1);
                                }
                        BIO_puts(io,"\n");

                        /* The following is evil and should not really
                         * be done */
                        BIO_printf(io,"Ciphers supported in s_server binary\n");
                        sk=SSL_get_ciphers(con);
                        j=sk_SSL_CIPHER_num(sk);
                        for (i=0; i<j; i++)
                                {
                                c=sk_SSL_CIPHER_value(sk,i);
                                BIO_printf(io,"%-11s:%-25s",
                                        SSL_CIPHER_get_version(c),
                                        SSL_CIPHER_get_name(c));
                                if ((((i+1)%2) == 0) && (i+1 != j))
                                        BIO_puts(io,"\n");
                                }
                        BIO_puts(io,"\n");
                        p=SSL_get_shared_ciphers(con,buf,bufsize);
                        if (p != NULL)
                                {
                                BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
                                j=i=0;
                                while (*p)
                                        {
                                        if (*p == ':')
                                                {
                                                BIO_write(io,space,26-j);
                                                i++;
                                                j=0;
                                                BIO_write(io,((i%3)?" ":"\n"),1);
                                                }
                                        else
                                                {
                                                BIO_write(io,p,1);
                                                j++;
                                                }
                                        p++;
                                        }
                                BIO_puts(io,"\n");
                                }
                        BIO_printf(io,((con->hit)
                                ?"---\nReused, "
                                :"---\nNew, "));
                        c=SSL_get_current_cipher(con);
                        BIO_printf(io,"%s, Cipher is %s\n",
                                SSL_CIPHER_get_version(c),
                                SSL_CIPHER_get_name(c));
                        SSL_SESSION_print(io,SSL_get_session(con));
                        BIO_printf(io,"---\n");
                        print_stats(io,SSL_get_SSL_CTX(con));
                        BIO_printf(io,"---\n");
                        peer=SSL_get_peer_certificate(con);
                        if (peer != NULL)
                                {
                                BIO_printf(io,"Client certificate\n");
                                X509_print(io,peer);
                                PEM_write_bio_X509(io,peer);
                                }
                        else
                                BIO_puts(io,"no client certificate available\n");
                        BIO_puts(io,"</BODY></HTML>\r\n\r\n");
                        break;
                        }
                else if ((www == 2) && (strncmp("GET ",buf,4) == 0))
                        {
                        BIO *file;
                        char *p,*e;
                        static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";

                        /* skip the '/' */
                        p= &(buf[5]);
                        dot=0;
                        for (e=p; *e != '\0'; e++)
                                {
                                if (e[0] == ' ') break;
                                if (    (e[0] == '.') &&
                                        (strncmp(&(e[-1]),"/../",4) == 0))
                                        dot=1;
                                }
                        

                        if (*e == '\0')
                                {
                                BIO_puts(io,text);
                                BIO_printf(io,"'%s' is an invalid file name\r\n",p);
                                break;
                                }
                        *e='\0';

                        if (dot)
                                {
                                BIO_puts(io,text);
                                BIO_printf(io,"'%s' contains '..' reference\r\n",p);
                                break;
                                }

                        if (*p == '/')
                                {
                                BIO_puts(io,text);
                                BIO_printf(io,"'%s' is an invalid path\r\n",p);
                                break;
                                }

                        /* append if a directory lookup */
                        if (e[-1] == '/')
                                strcat(p,"index.html");

                        /* if a directory, do the index thang */
                        if (stat(p,&st_buf) < 0)
                                {
                                BIO_puts(io,text);
                                BIO_printf(io,"Error accessing '%s'\r\n",p);
                                ERR_print_errors(io);
                                break;
                                }
                        if (S_ISDIR(st_buf.st_mode))
                                {
                                strcat(p,"/index.html");
                                }

                        if ((file=BIO_new_file(p,"r")) == NULL)
                                {
                                BIO_puts(io,text);
                                BIO_printf(io,"Error opening '%s'\r\n",p);
                                ERR_print_errors(io);
                                break;
                                }

                        if (!s_quiet)
                                BIO_printf(bio_err,"FILE:%s\n",p);

                        i=strlen(p);
                        if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
                                ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
                                ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
                                BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
                        else
                                BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
                        /* send the file */
                        total_bytes=0;
                        for (;;)
                                {
                                i=BIO_read(file,buf,bufsize);
                                if (i <= 0) break;

#ifdef RENEG
                                total_bytes+=i;
                                fprintf(stderr,"%d\n",i);
                                if (total_bytes > 3*1024)
                                        {
                                        total_bytes=0;
                                        fprintf(stderr,"RENEGOTIATE\n");
                                        SSL_renegotiate(con);
                                        }
#endif

                                for (j=0; j<i; )
                                        {
#ifdef RENEG
{ static count=0; if (++count == 13) { SSL_renegotiate(con); } }
#endif
                                        k=BIO_write(io,&(buf[j]),i-j);
                                        if (k <= 0)
                                                {
                                                if (!BIO_should_retry(io))
                                                        goto write_error;
                                                else
                                                        {
                                                        BIO_printf(bio_s_out,"rwrite W BLOCK\n");
                                                        }
                                                }
                                        else
                                                {
                                                j+=k;
                                                }
                                        }
                                }
write_error:
                        BIO_free(file);
                        break;
                        }
                }

        for (;;)
                {
                i=(int)BIO_flush(io);
                if (i <= 0)
                        {
                        if (!BIO_should_retry(io))
                                break;
                        }
                else
                        break;
                }
end:
#if 1
        /* make sure we re-use sessions */
        SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
#else
        /* This kills performace */
/*      SSL_shutdown(con); A shutdown gets sent in the
 *      BIO_free_all(io) procession */
#endif

err:

        if (ret >= 0)
                BIO_printf(bio_s_out,"ACCEPT\n");

        if (buf != NULL) Free(buf);
        if (io != NULL) BIO_free_all(io);
/*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
        return(ret);
        }

#ifndef NO_RSA
static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export, int keylength)
        {
        static RSA *rsa_tmp=NULL;

        if (rsa_tmp == NULL)
                {
                if (!s_quiet)
                        {
                        BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
                        BIO_flush(bio_err);
                        }
                rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
                if (!s_quiet)
                        {
                        BIO_printf(bio_err,"\n");
                        BIO_flush(bio_err);
                        }
                }
        return(rsa_tmp);
        }
#endif