diff options
Diffstat (limited to 'lib/mbedtls-2.27.0/programs/ssl/ssl_fork_server.c')
| -rw-r--r-- | lib/mbedtls-2.27.0/programs/ssl/ssl_fork_server.c | 423 |
1 files changed, 423 insertions, 0 deletions
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_fork_server.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_fork_server.c new file mode 100644 index 0000000..3a07179 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/ssl/ssl_fork_server.c @@ -0,0 +1,423 @@ +/* + * SSL server demonstration program using fork() for handling multiple clients + * + * Copyright The Mbed TLS Contributors + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may + * not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#if !defined(MBEDTLS_CONFIG_FILE) +#include "mbedtls/config.h" +#else +#include MBEDTLS_CONFIG_FILE +#endif + +#if defined(MBEDTLS_PLATFORM_C) +#include "mbedtls/platform.h" +#else +#include <stdio.h> +#include <stdlib.h> +#define mbedtls_fprintf fprintf +#define mbedtls_printf printf +#define mbedtls_time_t time_t +#define mbedtls_exit exit +#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS +#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE +#endif /* MBEDTLS_PLATFORM_C */ + +#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_CERTS_C) || \ + !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_SSL_TLS_C) || \ + !defined(MBEDTLS_SSL_SRV_C) || !defined(MBEDTLS_NET_C) || \ + !defined(MBEDTLS_RSA_C) || !defined(MBEDTLS_CTR_DRBG_C) || \ + !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_TIMING_C) || \ + !defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_PEM_PARSE_C) +int main( int argc, char *argv[] ) +{ + ((void) argc); + ((void) argv); + + mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_CERTS_C and/or MBEDTLS_ENTROPY_C " + "and/or MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_SRV_C and/or " + "MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or " + "MBEDTLS_CTR_DRBG_C and/or MBEDTLS_X509_CRT_PARSE_C and/or " + "MBEDTLS_TIMING_C and/or MBEDTLS_PEM_PARSE_C not defined.\n"); + mbedtls_exit( 0 ); +} +#elif defined(_WIN32) +int main( void ) +{ + mbedtls_printf("_WIN32 defined. This application requires fork() and signals " + "to work correctly.\n"); + mbedtls_exit( 0 ); +} +#else + +#include "mbedtls/entropy.h" +#include "mbedtls/ctr_drbg.h" +#include "mbedtls/certs.h" +#include "mbedtls/x509.h" +#include "mbedtls/ssl.h" +#include "mbedtls/net_sockets.h" +#include "mbedtls/timing.h" + +#include <string.h> +#include <signal.h> + +#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" + +#define DEBUG_LEVEL 0 + + +static void my_debug( void *ctx, int level, + const char *file, int line, + const char *str ) +{ + ((void) level); + + mbedtls_fprintf( (FILE *) ctx, "%s:%04d: %s", file, line, str ); + fflush( (FILE *) ctx ); +} + +int main( void ) +{ + int ret = 1, len, cnt = 0, pid; + int exit_code = MBEDTLS_EXIT_FAILURE; + mbedtls_net_context listen_fd, client_fd; + unsigned char buf[1024]; + const char *pers = "ssl_fork_server"; + + mbedtls_entropy_context entropy; + mbedtls_ctr_drbg_context ctr_drbg; + mbedtls_ssl_context ssl; + mbedtls_ssl_config conf; + mbedtls_x509_crt srvcert; + mbedtls_pk_context pkey; + + mbedtls_net_init( &listen_fd ); + mbedtls_net_init( &client_fd ); + mbedtls_ssl_init( &ssl ); + mbedtls_ssl_config_init( &conf ); + mbedtls_entropy_init( &entropy ); + mbedtls_pk_init( &pkey ); + mbedtls_x509_crt_init( &srvcert ); + mbedtls_ctr_drbg_init( &ctr_drbg ); + + signal( SIGCHLD, SIG_IGN ); + + /* + * 0. Initial seeding of the RNG + */ + mbedtls_printf( "\n . Initial seeding of the random generator..." ); + fflush( stdout ); + + if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy, + (const unsigned char *) pers, + strlen( pers ) ) ) != 0 ) + { + mbedtls_printf( " failed! mbedtls_ctr_drbg_seed returned %d\n\n", ret ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + + /* + * 1. Load the certificates and private RSA key + */ + mbedtls_printf( " . Loading the server cert. and key..." ); + fflush( stdout ); + + /* + * This demonstration program uses embedded test certificates. + * Instead, you may want to use mbedtls_x509_crt_parse_file() to read the + * server and CA certificates, as well as mbedtls_pk_parse_keyfile(). + */ + ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_srv_crt, + mbedtls_test_srv_crt_len ); + if( ret != 0 ) + { + mbedtls_printf( " failed! mbedtls_x509_crt_parse returned %d\n\n", ret ); + goto exit; + } + + ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_cas_pem, + mbedtls_test_cas_pem_len ); + if( ret != 0 ) + { + mbedtls_printf( " failed! mbedtls_x509_crt_parse returned %d\n\n", ret ); + goto exit; + } + + ret = mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_srv_key, + mbedtls_test_srv_key_len, NULL, 0 ); + if( ret != 0 ) + { + mbedtls_printf( " failed! mbedtls_pk_parse_key returned %d\n\n", ret ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + + /* + * 1b. Prepare SSL configuration + */ + mbedtls_printf( " . Configuring SSL..." ); + fflush( stdout ); + + if( ( ret = mbedtls_ssl_config_defaults( &conf, + MBEDTLS_SSL_IS_SERVER, + MBEDTLS_SSL_TRANSPORT_STREAM, + MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 ) + { + mbedtls_printf( " failed! mbedtls_ssl_config_defaults returned %d\n\n", ret ); + goto exit; + } + + mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg ); + mbedtls_ssl_conf_dbg( &conf, my_debug, stdout ); + + mbedtls_ssl_conf_ca_chain( &conf, srvcert.next, NULL ); + if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) ) != 0 ) + { + mbedtls_printf( " failed! mbedtls_ssl_conf_own_cert returned %d\n\n", ret ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + + /* + * 2. Setup the listening TCP socket + */ + mbedtls_printf( " . Bind on https://localhost:4433/ ..." ); + fflush( stdout ); + + if( ( ret = mbedtls_net_bind( &listen_fd, NULL, "4433", MBEDTLS_NET_PROTO_TCP ) ) != 0 ) + { + mbedtls_printf( " failed! mbedtls_net_bind returned %d\n\n", ret ); + goto exit; + } + + mbedtls_printf( " ok\n" ); + + while( 1 ) + { + /* + * 3. Wait until a client connects + */ + mbedtls_net_init( &client_fd ); + mbedtls_ssl_init( &ssl ); + + mbedtls_printf( " . Waiting for a remote connection ...\n" ); + fflush( stdout ); + + if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd, + NULL, 0, NULL ) ) != 0 ) + { + mbedtls_printf( " failed! mbedtls_net_accept returned %d\n\n", ret ); + goto exit; + } + + /* + * 3.5. Forking server thread + */ + + mbedtls_printf( " . Forking to handle connection ..." ); + fflush( stdout ); + + pid = fork(); + + if( pid < 0 ) + { + mbedtls_printf(" failed! fork returned %d\n\n", pid ); + goto exit; + } + + if( pid != 0 ) + { + mbedtls_printf( " ok\n" ); + mbedtls_net_close( &client_fd ); + + if( ( ret = mbedtls_ctr_drbg_reseed( &ctr_drbg, + (const unsigned char *) "parent", + 6 ) ) != 0 ) + { + mbedtls_printf( " failed! mbedtls_ctr_drbg_reseed returned %d\n\n", ret ); + goto exit; + } + + continue; + } + + mbedtls_net_close( &listen_fd ); + + pid = getpid(); + + /* + * 4. Setup stuff + */ + mbedtls_printf( "pid %d: Setting up the SSL data.\n", pid ); + fflush( stdout ); + + if( ( ret = mbedtls_ctr_drbg_reseed( &ctr_drbg, + (const unsigned char *) "child", + 5 ) ) != 0 ) + { + mbedtls_printf( + "pid %d: SSL setup failed! mbedtls_ctr_drbg_reseed returned %d\n\n", + pid, ret ); + goto exit; + } + + if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 ) + { + mbedtls_printf( + "pid %d: SSL setup failed! mbedtls_ssl_setup returned %d\n\n", + pid, ret ); + goto exit; + } + + mbedtls_ssl_set_bio( &ssl, &client_fd, mbedtls_net_send, mbedtls_net_recv, NULL ); + + mbedtls_printf( "pid %d: SSL setup ok\n", pid ); + + /* + * 5. Handshake + */ + mbedtls_printf( "pid %d: Performing the SSL/TLS handshake.\n", pid ); + fflush( stdout ); + + while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 ) + { + if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) + { + mbedtls_printf( + "pid %d: SSL handshake failed! mbedtls_ssl_handshake returned %d\n\n", + pid, ret ); + goto exit; + } + } + + mbedtls_printf( "pid %d: SSL handshake ok\n", pid ); + + /* + * 6. Read the HTTP Request + */ + mbedtls_printf( "pid %d: Start reading from client.\n", pid ); + fflush( stdout ); + + do + { + len = sizeof( buf ) - 1; + memset( buf, 0, sizeof( buf ) ); + ret = mbedtls_ssl_read( &ssl, buf, len ); + + if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE ) + continue; + + if( ret <= 0 ) + { + switch( ret ) + { + case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY: + mbedtls_printf( "pid %d: connection was closed gracefully\n", pid ); + break; + + case MBEDTLS_ERR_NET_CONN_RESET: + mbedtls_printf( "pid %d: connection was reset by peer\n", pid ); + break; + + default: + mbedtls_printf( "pid %d: mbedtls_ssl_read returned %d\n", pid, ret ); + break; + } + + break; + } + + len = ret; + mbedtls_printf( "pid %d: %d bytes read\n\n%s", pid, len, (char *) buf ); + + if( ret > 0 ) + break; + } + while( 1 ); + + /* + * 7. Write the 200 Response + */ + mbedtls_printf( "pid %d: Start writing to client.\n", pid ); + fflush( stdout ); + + len = sprintf( (char *) buf, HTTP_RESPONSE, + mbedtls_ssl_get_ciphersuite( &ssl ) ); + + while( cnt++ < 100 ) + { + while( ( ret = mbedtls_ssl_write( &ssl, buf, len ) ) <= 0 ) + { + if( ret == MBEDTLS_ERR_NET_CONN_RESET ) + { + mbedtls_printf( + "pid %d: Write failed! peer closed the connection\n\n", pid ); + goto exit; + } + + if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) + { + mbedtls_printf( + "pid %d: Write failed! mbedtls_ssl_write returned %d\n\n", + pid, ret ); + goto exit; + } + } + len = ret; + mbedtls_printf( "pid %d: %d bytes written\n\n%s\n", pid, len, (char *) buf ); + + mbedtls_net_usleep( 1000000 ); + } + + mbedtls_ssl_close_notify( &ssl ); + goto exit; + } + + exit_code = MBEDTLS_EXIT_SUCCESS; + +exit: + mbedtls_net_free( &client_fd ); + mbedtls_net_free( &listen_fd ); + + mbedtls_x509_crt_free( &srvcert ); + mbedtls_pk_free( &pkey ); + mbedtls_ssl_free( &ssl ); + mbedtls_ssl_config_free( &conf ); + mbedtls_ctr_drbg_free( &ctr_drbg ); + mbedtls_entropy_free( &entropy ); + +#if defined(_WIN32) + mbedtls_printf( " Press Enter to exit this program.\n" ); + fflush( stdout ); getchar(); +#endif + + mbedtls_exit( exit_code ); +} +#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_CERTS_C && MBEDTLS_ENTROPY_C && + MBEDTLS_SSL_TLS_C && MBEDTLS_SSL_SRV_C && MBEDTLS_NET_C && + MBEDTLS_RSA_C && MBEDTLS_CTR_DRBG_C && MBEDTLS_PEM_PARSE_C && + ! _WIN32 */ |