| /* |
| * SSL server demonstration program using fork() for handling multiple clients |
| * |
| * Copyright (C) 2006-2013, ARM Limited, All Rights Reserved |
| * |
| * This file is part of mbed TLS (https://tls.mbed.org) |
| * |
| * 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. |
| */ |
| |
| #if !defined(POLARSSL_CONFIG_FILE) |
| #include "polarssl/config.h" |
| #else |
| #include POLARSSL_CONFIG_FILE |
| #endif |
| |
| #if defined(POLARSSL_PLATFORM_C) |
| #include "polarssl/platform.h" |
| #else |
| #include <stdio.h> |
| #define polarssl_fprintf fprintf |
| #define polarssl_printf printf |
| #endif |
| |
| #if defined(_WIN32) |
| #include <windows.h> |
| #endif |
| |
| #if defined(POLARSSL_BIGNUM_C) && defined(POLARSSL_CERTS_C) && \ |
| defined(POLARSSL_ENTROPY_C) && defined(POLARSSL_SSL_TLS_C) && \ |
| defined(POLARSSL_SSL_SRV_C) && defined(POLARSSL_NET_C) && \ |
| defined(POLARSSL_RSA_C) && defined(POLARSSL_CTR_DRBG_C) && \ |
| defined(POLARSSL_X509_CRT_PARSE_C) && defined(POLARSSL_TIMING_C) && \ |
| defined(POLARSSL_FS_IO) |
| #include "polarssl/entropy.h" |
| #include "polarssl/ctr_drbg.h" |
| #include "polarssl/certs.h" |
| #include "polarssl/x509.h" |
| #include "polarssl/ssl.h" |
| #include "polarssl/net.h" |
| #include "polarssl/timing.h" |
| |
| #include <string.h> |
| #include <stdio.h> |
| #include <signal.h> |
| #endif |
| |
| #if !defined(_MSC_VER) || defined(EFIX64) || defined(EFI32) |
| #include <unistd.h> |
| #endif |
| |
| #define HTTP_RESPONSE \ |
| "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \ |
| "<h2>mbed TLS Test Server</h2>\r\n" \ |
| "<p>Successful connection using: %s</p>\r\n" |
| |
| #if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_CERTS_C) || \ |
| !defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_SSL_TLS_C) || \ |
| !defined(POLARSSL_SSL_SRV_C) || !defined(POLARSSL_NET_C) || \ |
| !defined(POLARSSL_RSA_C) || !defined(POLARSSL_CTR_DRBG_C) || \ |
| !defined(POLARSSL_X509_CRT_PARSE_C) || !defined(POLARSSL_TIMING_C) || \ |
| !defined(POLARSSL_FS_IO) |
| int main( int argc, char *argv[] ) |
| { |
| ((void) argc); |
| ((void) argv); |
| |
| polarssl_printf("POLARSSL_BIGNUM_C and/or POLARSSL_CERTS_C and/or POLARSSL_ENTROPY_C " |
| "and/or POLARSSL_SSL_TLS_C and/or POLARSSL_SSL_SRV_C and/or " |
| "POLARSSL_NET_C and/or POLARSSL_RSA_C and/or " |
| "POLARSSL_CTR_DRBG_C and/or POLARSSL_X509_CRT_PARSE_C and/or " |
| "POLARSSL_TIMING_C not defined.\n"); |
| return( 0 ); |
| } |
| #elif defined(_WIN32) |
| int main( void ) |
| { |
| polarssl_printf("_WIN32 defined. This application requires fork() and signals " |
| "to work correctly.\n"); |
| return( 0 ); |
| } |
| #else |
| |
| #define DEBUG_LEVEL 0 |
| |
| static void my_debug( void *ctx, int level, const char *str ) |
| { |
| if( level < DEBUG_LEVEL ) |
| { |
| polarssl_fprintf( (FILE *) ctx, "%s", str ); |
| fflush( (FILE *) ctx ); |
| } |
| } |
| |
| int main( void ) |
| { |
| int ret, len, cnt = 0, pid; |
| int listen_fd; |
| int client_fd = -1; |
| unsigned char buf[1024]; |
| const char *pers = "ssl_fork_server"; |
| |
| entropy_context entropy; |
| ctr_drbg_context ctr_drbg; |
| ssl_context ssl; |
| x509_crt srvcert; |
| pk_context pkey; |
| |
| memset( &ssl, 0, sizeof(ssl_context) ); |
| |
| entropy_init( &entropy ); |
| pk_init( &pkey ); |
| x509_crt_init( &srvcert ); |
| |
| signal( SIGCHLD, SIG_IGN ); |
| |
| /* |
| * 0. Initial seeding of the RNG |
| */ |
| polarssl_printf( "\n . Initial seeding of the random generator..." ); |
| fflush( stdout ); |
| |
| if( ( ret = ctr_drbg_init( &ctr_drbg, entropy_func, &entropy, |
| (const unsigned char *) pers, |
| strlen( pers ) ) ) != 0 ) |
| { |
| polarssl_printf( " failed\n ! ctr_drbg_init returned %d\n", ret ); |
| goto exit; |
| } |
| |
| polarssl_printf( " ok\n" ); |
| |
| /* |
| * 1. Load the certificates and private RSA key |
| */ |
| polarssl_printf( " . Loading the server cert. and key..." ); |
| fflush( stdout ); |
| |
| /* |
| * This demonstration program uses embedded test certificates. |
| * Instead, you may want to use x509_crt_parse_file() to read the |
| * server and CA certificates, as well as pk_parse_keyfile(). |
| */ |
| ret = x509_crt_parse( &srvcert, (const unsigned char *) test_srv_crt, |
| strlen( test_srv_crt ) ); |
| if( ret != 0 ) |
| { |
| polarssl_printf( " failed\n ! x509_crt_parse returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| ret = x509_crt_parse( &srvcert, (const unsigned char *) test_ca_list, |
| strlen( test_ca_list ) ); |
| if( ret != 0 ) |
| { |
| polarssl_printf( " failed\n ! x509_crt_parse returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| ret = pk_parse_key( &pkey, (const unsigned char *) test_srv_key, |
| strlen( test_srv_key ), NULL, 0 ); |
| if( ret != 0 ) |
| { |
| polarssl_printf( " failed\n ! pk_parse_key returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| polarssl_printf( " ok\n" ); |
| |
| /* |
| * 2. Setup the listening TCP socket |
| */ |
| polarssl_printf( " . Bind on https://localhost:4433/ ..." ); |
| fflush( stdout ); |
| |
| if( ( ret = net_bind( &listen_fd, NULL, 4433 ) ) != 0 ) |
| { |
| polarssl_printf( " failed\n ! net_bind returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| polarssl_printf( " ok\n" ); |
| |
| while( 1 ) |
| { |
| /* |
| * 3. Wait until a client connects |
| */ |
| client_fd = -1; |
| memset( &ssl, 0, sizeof( ssl ) ); |
| |
| polarssl_printf( " . Waiting for a remote connection ..." ); |
| fflush( stdout ); |
| |
| if( ( ret = net_accept( listen_fd, &client_fd, NULL ) ) != 0 ) |
| { |
| polarssl_printf( " failed\n ! net_accept returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| polarssl_printf( " ok\n" ); |
| |
| /* |
| * 3.5. Forking server thread |
| */ |
| |
| pid = fork(); |
| |
| polarssl_printf( " . Forking to handle connection ..." ); |
| fflush( stdout ); |
| |
| if( pid < 0 ) |
| { |
| polarssl_printf(" failed\n ! fork returned %d\n\n", pid ); |
| goto exit; |
| } |
| |
| polarssl_printf( " ok\n" ); |
| |
| if( pid != 0 ) |
| { |
| if( ( ret = ctr_drbg_reseed( &ctr_drbg, |
| (const unsigned char *) "parent", |
| 6 ) ) != 0 ) |
| { |
| polarssl_printf( " failed\n ! ctr_drbg_reseed returned %d\n", ret ); |
| goto exit; |
| } |
| |
| close( client_fd ); |
| continue; |
| } |
| |
| close( listen_fd ); |
| |
| /* |
| * 4. Setup stuff |
| */ |
| polarssl_printf( " . Setting up the SSL data...." ); |
| fflush( stdout ); |
| |
| if( ( ret = ctr_drbg_reseed( &ctr_drbg, |
| (const unsigned char *) "child", |
| 5 ) ) != 0 ) |
| { |
| polarssl_printf( " failed\n ! ctr_drbg_reseed returned %d\n", ret ); |
| goto exit; |
| } |
| |
| if( ( ret = ssl_init( &ssl ) ) != 0 ) |
| { |
| polarssl_printf( " failed\n ! ssl_init returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| polarssl_printf( " ok\n" ); |
| |
| ssl_set_endpoint( &ssl, SSL_IS_SERVER ); |
| ssl_set_authmode( &ssl, SSL_VERIFY_NONE ); |
| |
| /* SSLv3 is deprecated, set minimum to TLS 1.0 */ |
| ssl_set_min_version( &ssl, SSL_MAJOR_VERSION_3, |
| SSL_MINOR_VERSION_1 ); |
| /* RC4 is deprecated, disable it */ |
| ssl_set_arc4_support( &ssl, SSL_ARC4_DISABLED ); |
| |
| ssl_set_rng( &ssl, ctr_drbg_random, &ctr_drbg ); |
| ssl_set_dbg( &ssl, my_debug, stdout ); |
| ssl_set_bio( &ssl, net_recv, &client_fd, |
| net_send, &client_fd ); |
| |
| ssl_set_ca_chain( &ssl, srvcert.next, NULL, NULL ); |
| if( ( ret = ssl_set_own_cert( &ssl, &srvcert, &pkey ) ) != 0 ) |
| { |
| polarssl_printf( " failed\n ! ssl_set_own_cert returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| /* |
| * 5. Handshake |
| */ |
| polarssl_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 ) |
| { |
| polarssl_printf( " failed\n ! ssl_handshake returned %d\n\n", ret ); |
| goto exit; |
| } |
| } |
| |
| polarssl_printf( " ok\n" ); |
| |
| /* |
| * 6. Read the HTTP Request |
| */ |
| polarssl_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: |
| polarssl_printf( " connection was closed gracefully\n" ); |
| break; |
| |
| case POLARSSL_ERR_NET_CONN_RESET: |
| polarssl_printf( " connection was reset by peer\n" ); |
| break; |
| |
| default: |
| polarssl_printf( " ssl_read returned %d\n", ret ); |
| break; |
| } |
| |
| break; |
| } |
| |
| len = ret; |
| polarssl_printf( " %d bytes read\n\n%s", len, (char *) buf ); |
| |
| if( ret > 0 ) |
| break; |
| } |
| while( 1 ); |
| |
| /* |
| * 7. Write the 200 Response |
| */ |
| polarssl_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 ) |
| { |
| polarssl_printf( " failed\n ! peer closed the connection\n\n" ); |
| goto exit; |
| } |
| |
| if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE ) |
| { |
| polarssl_printf( " failed\n ! ssl_write returned %d\n\n", ret ); |
| goto exit; |
| } |
| } |
| len = ret; |
| polarssl_printf( " %d bytes written\n\n%s\n", len, (char *) buf ); |
| |
| m_sleep( 1000 ); |
| } |
| |
| ssl_close_notify( &ssl ); |
| goto exit; |
| } |
| |
| exit: |
| |
| if( client_fd != -1 ) |
| net_close( client_fd ); |
| |
| x509_crt_free( &srvcert ); |
| pk_free( &pkey ); |
| ssl_free( &ssl ); |
| ctr_drbg_free( &ctr_drbg ); |
| entropy_free( &entropy ); |
| |
| #if defined(_WIN32) |
| polarssl_printf( " Press Enter to exit this program.\n" ); |
| fflush( stdout ); getchar(); |
| #endif |
| |
| return( ret ); |
| } |
| #endif /* POLARSSL_BIGNUM_C && POLARSSL_CERTS_C && POLARSSL_ENTROPY_C && |
| POLARSSL_SSL_TLS_C && POLARSSL_SSL_SRV_C && POLARSSL_NET_C && |
| POLARSSL_RSA_C && POLARSSL_CTR_DRBG_C */ |