From 896ac22071a9756941f68415f83ae5ccdcef6624 Mon Sep 17 00:00:00 2001 From: Paul Bakker Date: Fri, 20 May 2011 12:33:05 +0000 Subject: [PATCH] - Added ssl_fork_server example program --- programs/Makefile | 7 +- programs/ssl/CMakeLists.txt | 5 +- programs/ssl/ssl_fork_server.c | 438 +++++++++++++++++++++++++++++++++ 3 files changed, 448 insertions(+), 2 deletions(-) create mode 100644 programs/ssl/ssl_fork_server.c diff --git a/programs/Makefile b/programs/Makefile index f8fc7008e..2f2e5ac66 100644 --- a/programs/Makefile +++ b/programs/Makefile @@ -16,7 +16,8 @@ APPS = aes/aescrypt2 aes/crypt_and_hash \ pkey/rsa_sign pkey/rsa_verify \ pkey/rsa_sign_pss pkey/rsa_verify_pss \ ssl/ssl_client1 ssl/ssl_client2 \ - ssl/ssl_server random/gen_random \ + ssl/ssl_server ssl/ssl_fork_server \ + random/gen_random \ test/ssl_cert_test test/benchmark \ test/selftest test/ssl_test \ x509/cert_app x509/crl_app @@ -105,6 +106,10 @@ ssl/ssl_server: ssl/ssl_server.c ../library/libpolarssl.a echo " CC ssl/ssl_server.c" $(CC) $(CFLAGS) $(OFLAGS) ssl/ssl_server.c $(LDFLAGS) -o $@ +ssl/ssl_fork_server: ssl/ssl_fork_server.c ../library/libpolarssl.a + echo " CC ssl/ssl_fork_server.c" + $(CC) $(CFLAGS) $(OFLAGS) ssl/ssl_fork_server.c $(LDFLAGS) -o $@ + test/ssl_cert_test: test/ssl_cert_test.c ../library/libpolarssl.a echo " CC test/ssl_cert_test.c" $(CC) $(CFLAGS) $(OFLAGS) test/ssl_cert_test.c $(LDFLAGS) -o $@ diff --git a/programs/ssl/CMakeLists.txt b/programs/ssl/CMakeLists.txt index f5c26d239..96952d826 100644 --- a/programs/ssl/CMakeLists.txt +++ b/programs/ssl/CMakeLists.txt @@ -15,6 +15,9 @@ target_link_libraries(ssl_client2 ${libs}) add_executable(ssl_server ssl_server.c) target_link_libraries(ssl_server ${libs}) -INSTALL(TARGETS ssl_client1 ssl_client2 ssl_server +add_executable(ssl_fork_server ssl_fork_server.c) +target_link_libraries(ssl_fork_server ${libs}) + +INSTALL(TARGETS ssl_client1 ssl_client2 ssl_server ssl_fork_server DESTINATION "bin" PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE) diff --git a/programs/ssl/ssl_fork_server.c b/programs/ssl/ssl_fork_server.c new file mode 100644 index 000000000..cba605f36 --- /dev/null +++ b/programs/ssl/ssl_fork_server.c @@ -0,0 +1,438 @@ +/* + * SSL server demonstration program + * + * Copyright (C) 2006-2010, Brainspark B.V. + * + * This file is part of PolarSSL (http://www.polarssl.org) + * Lead Maintainer: Paul Bakker + * + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef _CRT_SECURE_NO_DEPRECATE +#define _CRT_SECURE_NO_DEPRECATE 1 +#endif + +#ifdef WIN32 +#include +#endif + +#include +#include +#include +#include +#include + +#include "polarssl/havege.h" +#include "polarssl/certs.h" +#include "polarssl/x509.h" +#include "polarssl/ssl.h" +#include "polarssl/net.h" +#include "polarssl/timing.h" + +#define HTTP_RESPONSE \ + "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \ + "

PolarSSL Test Server

\r\n" \ + "

Successful connection using: %s

\r\n" + +/* + * Computing a "safe" DH-1024 prime can take a very + * long time, so a precomputed value is provided below. + * You may run dh_genprime to generate a new value. + */ +char *my_dhm_P = + "E4004C1F94182000103D883A448B3F80" \ + "2CE4B44A83301270002C20D0321CFD00" \ + "11CCEF784C26A400F43DFB901BCA7538" \ + "F2C6B176001CF5A0FD16D2C48B1D0C1C" \ + "F6AC8E1DA6BCC3B4E1F96B0564965300" \ + "FFA1D0B601EB2800F489AA512C4B248C" \ + "01F76949A60BB7F00A40B1EAB64BDD48" \ + "E8A700D60B7F1200FA8E77B0A979DABF"; + +char *my_dhm_G = "4"; + +/* + * Sorted by order of preference + */ +int my_ciphersuites[] = +{ + SSL_EDH_RSA_AES_256_SHA, + SSL_EDH_RSA_CAMELLIA_256_SHA, + SSL_EDH_RSA_AES_128_SHA, + SSL_EDH_RSA_CAMELLIA_128_SHA, + SSL_EDH_RSA_DES_168_SHA, + SSL_RSA_AES_256_SHA, + SSL_RSA_CAMELLIA_256_SHA, + SSL_RSA_AES_128_SHA, + SSL_RSA_CAMELLIA_128_SHA, + SSL_RSA_DES_168_SHA, + SSL_RSA_RC4_128_SHA, + SSL_RSA_RC4_128_MD5, + 0 +}; + +#define DEBUG_LEVEL 0 + +void my_debug( void *ctx, int level, const char *str ) +{ + if( level < DEBUG_LEVEL ) + { + fprintf( (FILE *) ctx, "%s", str ); + fflush( (FILE *) ctx ); + } +} + +/* + * These session callbacks use a simple chained list + * to store and retrieve the session information. + */ +ssl_session *s_list_1st = NULL; +ssl_session *cur, *prv; + +static int my_get_session( ssl_context *ssl ) +{ + time_t t = time( NULL ); + + if( ssl->resume == 0 ) + return( 1 ); + + cur = s_list_1st; + prv = NULL; + + while( cur != NULL ) + { + prv = cur; + cur = cur->next; + + if( ssl->timeout != 0 && t - prv->start > ssl->timeout ) + continue; + + if( ssl->session->ciphersuite != prv->ciphersuite || + ssl->session->length != prv->length ) + continue; + + if( memcmp( ssl->session->id, prv->id, prv->length ) != 0 ) + continue; + + memcpy( ssl->session->master, prv->master, 48 ); + return( 0 ); + } + + return( 1 ); +} + +static int my_set_session( ssl_context *ssl ) +{ + time_t t = time( NULL ); + + cur = s_list_1st; + prv = NULL; + + while( cur != NULL ) + { + if( ssl->timeout != 0 && t - cur->start > ssl->timeout ) + break; /* expired, reuse this slot */ + + if( memcmp( ssl->session->id, cur->id, cur->length ) == 0 ) + break; /* client reconnected */ + + prv = cur; + cur = cur->next; + } + + if( cur == NULL ) + { + cur = (ssl_session *) malloc( sizeof( ssl_session ) ); + if( cur == NULL ) + return( 1 ); + + if( prv == NULL ) + s_list_1st = cur; + else prv->next = cur; + } + + memcpy( cur, ssl->session, sizeof( ssl_session ) ); + + return( 0 ); +} + +int main( void ) +{ + int ret, len, cnt = 0, pid; + int listen_fd; + int client_fd; + unsigned char buf[1024]; + + havege_state hs; + ssl_context ssl; + ssl_session ssn; + x509_cert srvcert; + rsa_context rsa; + + signal( SIGCHLD, SIG_IGN ); + + /* + * 1. Load the certificates and private RSA key + */ + printf( "\n . Loading the server cert. and key..." ); + fflush( stdout ); + + memset( &srvcert, 0, sizeof( x509_cert ) ); + + /* + * This demonstration program uses embedded test certificates. + * Instead, you may want to use x509parse_crtfile() to read the + * server and CA certificates, as well as x509parse_keyfile(). + */ + ret = x509parse_crt( &srvcert, (unsigned char *) test_srv_crt, + strlen( test_srv_crt ) ); + if( ret != 0 ) + { + printf( " failed\n ! x509parse_crt returned %d\n\n", ret ); + goto exit; + } + + ret = x509parse_crt( &srvcert, (unsigned char *) test_ca_crt, + strlen( test_ca_crt ) ); + if( ret != 0 ) + { + printf( " failed\n ! x509parse_crt returned %d\n\n", ret ); + goto exit; + } + + rsa_init( &rsa, RSA_PKCS_V15, 0 ); + ret = x509parse_key( &rsa, (unsigned char *) test_srv_key, + strlen( test_srv_key ), NULL, 0 ); + if( ret != 0 ) + { + printf( " failed\n ! x509parse_key returned %d\n\n", ret ); + goto exit; + } + + printf( " ok\n" ); + + /* + * 2. Setup the listening TCP socket + */ + printf( " . Bind on https://localhost:4433/ ..." ); + fflush( stdout ); + + if( ( ret = net_bind( &listen_fd, NULL, 4433 ) ) != 0 ) + { + printf( " failed\n ! net_bind returned %d\n\n", ret ); + goto exit; + } + + printf( " ok\n" ); + + while( 1 ) + { + /* + * 3. Wait until a client connects + */ + client_fd = -1; + memset( &ssl, 0, sizeof( ssl ) ); + + printf( " . Waiting for a remote connection ..." ); + fflush( stdout ); + + if( ( ret = net_accept( listen_fd, &client_fd, NULL ) ) != 0 ) + { + printf( " failed\n ! net_accept returned %d\n\n", ret ); + goto exit; + } + + printf( " ok\n" ); + + /* + * 3.5. Forking server thread + */ + + pid = fork(); + + printf( " . Forking to handle connection ..." ); + fflush( stdout ); + + if( pid < 0 ) + { + printf(" failed\n ! fork returned %d\n\n", pid ); + goto exit; + } + + printf( " ok\n" ); + + if( pid != 0 ) + { + close( client_fd ); + continue; + } + + close( listen_fd ); + + /* + * 4. Setup stuff + */ + printf( " . Setting up the RNG and SSL data...." ); + fflush( stdout ); + + havege_init( &hs ); + + if( ( ret = ssl_init( &ssl ) ) != 0 ) + { + printf( " failed\n ! ssl_init returned %d\n\n", ret ); + goto exit; + } + + printf( " ok\n" ); + + ssl_set_endpoint( &ssl, SSL_IS_SERVER ); + ssl_set_authmode( &ssl, SSL_VERIFY_NONE ); + + ssl_set_rng( &ssl, havege_rand, &hs ); + ssl_set_dbg( &ssl, my_debug, stdout ); + ssl_set_bio( &ssl, net_recv, &client_fd, + net_send, &client_fd ); + ssl_set_scb( &ssl, my_get_session, + my_set_session ); + + ssl_set_ciphersuites( &ssl, my_ciphersuites ); + ssl_set_session( &ssl, 1, 0, &ssn ); + + memset( &ssn, 0, sizeof( ssl_session ) ); + + ssl_set_ca_chain( &ssl, srvcert.next, NULL, NULL ); + ssl_set_own_cert( &ssl, &srvcert, &rsa ); + ssl_set_dh_param( &ssl, my_dhm_P, my_dhm_G ); + + /* + * 5. Handshake + */ + printf( " . Performing the SSL/TLS handshake..." ); + fflush( stdout ); + + while( ( ret = ssl_handshake( &ssl ) ) != 0 ) + { + if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE ) + { + printf( " failed\n ! ssl_handshake returned %d\n\n", ret ); + goto exit; + } + } + + printf( " ok\n" ); + + /* + * 6. Read the HTTP Request + */ + printf( " < Read from client:" ); + fflush( stdout ); + + do + { + len = sizeof( buf ) - 1; + memset( buf, 0, sizeof( buf ) ); + ret = ssl_read( &ssl, buf, len ); + + if( ret == POLARSSL_ERR_NET_WANT_READ || ret == POLARSSL_ERR_NET_WANT_WRITE ) + continue; + + if( ret <= 0 ) + { + switch( ret ) + { + case POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY: + printf( " connection was closed gracefully\n" ); + break; + + case POLARSSL_ERR_NET_CONN_RESET: + printf( " connection was reset by peer\n" ); + break; + + default: + printf( " ssl_read returned %d\n", ret ); + break; + } + + break; + } + + len = ret; + printf( " %d bytes read\n\n%s", len, (char *) buf ); + } + while( 0 ); + + /* + * 7. Write the 200 Response + */ + printf( " > Write to client:" ); + fflush( stdout ); + + len = sprintf( (char *) buf, HTTP_RESPONSE, + ssl_get_ciphersuite( &ssl ) ); + + while( cnt < 100 ) + { + while( ( ret = ssl_write( &ssl, buf, len ) ) <= 0 ) + { + if( ret == POLARSSL_ERR_NET_CONN_RESET ) + { + printf( " failed\n ! peer closed the connection\n\n" ); + goto exit; + } + + if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE ) + { + printf( " failed\n ! ssl_write returned %d\n\n", ret ); + goto exit; + } + } + len = ret; + printf( " %d bytes written\n\n%s\n", len, (char *) buf ); + + m_sleep( 1000 ); + } + + ssl_close_notify( &ssl ); + goto exit; + } + +exit: + + net_close( client_fd ); + x509_free( &srvcert ); + rsa_free( &rsa ); + ssl_free( &ssl ); + + cur = s_list_1st; + while( cur != NULL ) + { + prv = cur; + cur = cur->next; + memset( prv, 0, sizeof( ssl_session ) ); + free( prv ); + } + + memset( &ssl, 0, sizeof( ssl_context ) ); + +#ifdef WIN32 + printf( " Press Enter to exit this program.\n" ); + fflush( stdout ); getchar(); +#endif + + return( ret ); +}