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openssl/apps/s_server.c
Ralf S. Engelschall dfeab0689f Import of old SSLeay release: SSLeay 0.9.1b (unreleased)
1998-12-21 11:00:56 +00:00

1237 lines
29 KiB
C
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/* 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.]
*/
#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 "lhash.h"
#include "bn.h"
#define USE_SOCKETS
#include "apps.h"
#include "err.h"
#include "pem.h"
#include "x509.h"
#include "ssl.h"
#include "s_apps.h"
#ifndef NOPROTO
static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export);
static int sv_body(char *hostname, int s);
static int www_body(char *hostname, int s);
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);*/
#else
static RSA MS_CALLBACK *tmp_rsa_cb();
static int sv_body();
static int www_body();
static void close_accept_socket();
static void sv_usage();
static int init_ssl_connection();
static void print_stats();
#ifndef NO_DH
static DH *load_dh_param();
static DH *get_dh512();
#endif
/* static void s_server_init(); */
#endif
#ifndef S_ISDIR
#define S_ISDIR(a) (((a) & _S_IFMT) == _S_IFDIR)
#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()
{
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()
{
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()
{
BIO_printf(bio_err,"usage: s_server [args ...]\n");
BIO_printf(bio_err,"\n");
BIO_printf(bio_err," -accept arg - port to accept on (default is %d\n",PORT);
BIO_printf(bio_err," -verify 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);
#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 'ssleay 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 - Returns requested page from to a 'GET <path> HTTP/1.0'\n");
}
static int local_argc=0;
static char **local_argv;
static int hack=0;
int MAIN(argc, argv)
int argc;
char *argv[];
{
short port=PORT;
char *CApath=NULL,*CAfile=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,"-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;
}
#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
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(s_cert_file));
BIO_printf(bio_s_out,"ACCEPT\n");
if (www)
do_server(port,&accept_socket,www_body);
else
do_server(port,&accept_socket,sv_body);
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,ssl_ctx)
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(hostname, s)
char *hostname;
int s;
{
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);
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);
i=select(width,&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] == '\0') || (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()
{
BIO_printf(bio_err,"shutdown accept socket\n");
if (accept_socket >= 0)
{
SHUTDOWN2(accept_socket);
}
}
static int init_ssl_connection(con)
SSL *con;
{
int i;
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()
{
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(ctx,file)
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(hostname, s)
char *hostname;
int s;
{
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;
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 *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_num(sk);
for (i=0; i<j; i++)
{
c=(SSL_CIPHER *)sk_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);
}
static RSA MS_CALLBACK *tmp_rsa_cb(s,export)
SSL *s;
int export;
{
static RSA *rsa_tmp=NULL;
if (rsa_tmp == NULL)
{
if (!s_quiet)
{
BIO_printf(bio_err,"Generating temp (512 bit) RSA key...");
BIO_flush(bio_err);
}
#ifndef NO_RSA
rsa_tmp=RSA_generate_key(512,RSA_F4,NULL,NULL);
#endif
if (!s_quiet)
{
BIO_printf(bio_err,"\n");
BIO_flush(bio_err);
}
}
return(rsa_tmp);
}
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