| /* |
| * SSL server demonstration program using pthread 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_snprintf snprintf |
| #define mbedtls_exit exit |
| #define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS |
| #define MBEDTLS_EXIT_FAILURE EXIT_FAILURE |
| #endif |
| |
| #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_FS_IO) || \ |
| !defined(MBEDTLS_THREADING_C) || !defined(MBEDTLS_THREADING_PTHREAD) || \ |
| !defined(MBEDTLS_PEM_PARSE_C) |
| int main( void ) |
| { |
| 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_THREADING_C and/or MBEDTLS_THREADING_PTHREAD " |
| "and/or MBEDTLS_PEM_PARSE_C not defined.\n"); |
| mbedtls_exit( 0 ); |
| } |
| #else |
| |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #if defined(_WIN32) |
| #include <windows.h> |
| #endif |
| |
| #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/error.h" |
| |
| #if defined(MBEDTLS_SSL_CACHE_C) |
| #include "mbedtls/ssl_cache.h" |
| #endif |
| |
| #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) |
| #include "mbedtls/memory_buffer_alloc.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 |
| |
| #define MAX_NUM_THREADS 5 |
| |
| mbedtls_threading_mutex_t debug_mutex; |
| |
| static void my_mutexed_debug( void *ctx, int level, |
| const char *file, int line, |
| const char *str ) |
| { |
| long int thread_id = (long int) pthread_self(); |
| |
| mbedtls_mutex_lock( &debug_mutex ); |
| |
| ((void) level); |
| mbedtls_fprintf( (FILE *) ctx, "%s:%04d: [ #%ld ] %s", |
| file, line, thread_id, str ); |
| fflush( (FILE *) ctx ); |
| |
| mbedtls_mutex_unlock( &debug_mutex ); |
| } |
| |
| typedef struct { |
| mbedtls_net_context client_fd; |
| int thread_complete; |
| const mbedtls_ssl_config *config; |
| } thread_info_t; |
| |
| typedef struct { |
| int active; |
| thread_info_t data; |
| pthread_t thread; |
| } pthread_info_t; |
| |
| static thread_info_t base_info; |
| static pthread_info_t threads[MAX_NUM_THREADS]; |
| |
| static void *handle_ssl_connection( void *data ) |
| { |
| int ret, len; |
| thread_info_t *thread_info = (thread_info_t *) data; |
| mbedtls_net_context *client_fd = &thread_info->client_fd; |
| long int thread_id = (long int) pthread_self(); |
| unsigned char buf[1024]; |
| mbedtls_ssl_context ssl; |
| |
| /* Make sure memory references are valid */ |
| mbedtls_ssl_init( &ssl ); |
| |
| mbedtls_printf( " [ #%ld ] Setting up SSL/TLS data\n", thread_id ); |
| |
| /* |
| * 4. Get the SSL context ready |
| */ |
| if( ( ret = mbedtls_ssl_setup( &ssl, thread_info->config ) ) != 0 ) |
| { |
| mbedtls_printf( " [ #%ld ] failed: mbedtls_ssl_setup returned -0x%04x\n", |
| thread_id, -ret ); |
| goto thread_exit; |
| } |
| |
| mbedtls_ssl_set_bio( &ssl, client_fd, mbedtls_net_send, mbedtls_net_recv, NULL ); |
| |
| /* |
| * 5. Handshake |
| */ |
| mbedtls_printf( " [ #%ld ] Performing the SSL/TLS handshake\n", thread_id ); |
| |
| while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 ) |
| { |
| if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) |
| { |
| mbedtls_printf( " [ #%ld ] failed: mbedtls_ssl_handshake returned -0x%04x\n", |
| thread_id, -ret ); |
| goto thread_exit; |
| } |
| } |
| |
| mbedtls_printf( " [ #%ld ] ok\n", thread_id ); |
| |
| /* |
| * 6. Read the HTTP Request |
| */ |
| mbedtls_printf( " [ #%ld ] < Read from client\n", thread_id ); |
| |
| 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( " [ #%ld ] connection was closed gracefully\n", |
| thread_id ); |
| goto thread_exit; |
| |
| case MBEDTLS_ERR_NET_CONN_RESET: |
| mbedtls_printf( " [ #%ld ] connection was reset by peer\n", |
| thread_id ); |
| goto thread_exit; |
| |
| default: |
| mbedtls_printf( " [ #%ld ] mbedtls_ssl_read returned -0x%04x\n", |
| thread_id, -ret ); |
| goto thread_exit; |
| } |
| } |
| |
| len = ret; |
| mbedtls_printf( " [ #%ld ] %d bytes read\n=====\n%s\n=====\n", |
| thread_id, len, (char *) buf ); |
| |
| if( ret > 0 ) |
| break; |
| } |
| while( 1 ); |
| |
| /* |
| * 7. Write the 200 Response |
| */ |
| mbedtls_printf( " [ #%ld ] > Write to client:\n", thread_id ); |
| |
| len = sprintf( (char *) buf, HTTP_RESPONSE, |
| mbedtls_ssl_get_ciphersuite( &ssl ) ); |
| |
| while( ( ret = mbedtls_ssl_write( &ssl, buf, len ) ) <= 0 ) |
| { |
| if( ret == MBEDTLS_ERR_NET_CONN_RESET ) |
| { |
| mbedtls_printf( " [ #%ld ] failed: peer closed the connection\n", |
| thread_id ); |
| goto thread_exit; |
| } |
| |
| if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) |
| { |
| mbedtls_printf( " [ #%ld ] failed: mbedtls_ssl_write returned -0x%04x\n", |
| thread_id, ret ); |
| goto thread_exit; |
| } |
| } |
| |
| len = ret; |
| mbedtls_printf( " [ #%ld ] %d bytes written\n=====\n%s\n=====\n", |
| thread_id, len, (char *) buf ); |
| |
| mbedtls_printf( " [ #%ld ] . Closing the connection...", thread_id ); |
| |
| while( ( ret = mbedtls_ssl_close_notify( &ssl ) ) < 0 ) |
| { |
| if( ret != MBEDTLS_ERR_SSL_WANT_READ && |
| ret != MBEDTLS_ERR_SSL_WANT_WRITE ) |
| { |
| mbedtls_printf( " [ #%ld ] failed: mbedtls_ssl_close_notify returned -0x%04x\n", |
| thread_id, ret ); |
| goto thread_exit; |
| } |
| } |
| |
| mbedtls_printf( " ok\n" ); |
| |
| ret = 0; |
| |
| thread_exit: |
| |
| #ifdef MBEDTLS_ERROR_C |
| if( ret != 0 ) |
| { |
| char error_buf[100]; |
| mbedtls_strerror( ret, error_buf, 100 ); |
| mbedtls_printf(" [ #%ld ] Last error was: -0x%04x - %s\n\n", |
| thread_id, -ret, error_buf ); |
| } |
| #endif |
| |
| mbedtls_net_free( client_fd ); |
| mbedtls_ssl_free( &ssl ); |
| |
| thread_info->thread_complete = 1; |
| |
| return( NULL ); |
| } |
| |
| static int thread_create( mbedtls_net_context *client_fd ) |
| { |
| int ret, i; |
| |
| /* |
| * Find in-active or finished thread slot |
| */ |
| for( i = 0; i < MAX_NUM_THREADS; i++ ) |
| { |
| if( threads[i].active == 0 ) |
| break; |
| |
| if( threads[i].data.thread_complete == 1 ) |
| { |
| mbedtls_printf( " [ main ] Cleaning up thread %d\n", i ); |
| pthread_join(threads[i].thread, NULL ); |
| memset( &threads[i], 0, sizeof(pthread_info_t) ); |
| break; |
| } |
| } |
| |
| if( i == MAX_NUM_THREADS ) |
| return( -1 ); |
| |
| /* |
| * Fill thread-info for thread |
| */ |
| memcpy( &threads[i].data, &base_info, sizeof(base_info) ); |
| threads[i].active = 1; |
| memcpy( &threads[i].data.client_fd, client_fd, sizeof( mbedtls_net_context ) ); |
| |
| if( ( ret = pthread_create( &threads[i].thread, NULL, handle_ssl_connection, |
| &threads[i].data ) ) != 0 ) |
| { |
| return( ret ); |
| } |
| |
| return( 0 ); |
| } |
| |
| int main( void ) |
| { |
| int ret; |
| mbedtls_net_context listen_fd, client_fd; |
| const char pers[] = "ssl_pthread_server"; |
| |
| mbedtls_entropy_context entropy; |
| mbedtls_ctr_drbg_context ctr_drbg; |
| mbedtls_ssl_config conf; |
| mbedtls_x509_crt srvcert; |
| mbedtls_x509_crt cachain; |
| mbedtls_pk_context pkey; |
| #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) |
| unsigned char alloc_buf[100000]; |
| #endif |
| #if defined(MBEDTLS_SSL_CACHE_C) |
| mbedtls_ssl_cache_context cache; |
| #endif |
| |
| #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) |
| mbedtls_memory_buffer_alloc_init( alloc_buf, sizeof(alloc_buf) ); |
| #endif |
| |
| #if defined(MBEDTLS_SSL_CACHE_C) |
| mbedtls_ssl_cache_init( &cache ); |
| #endif |
| |
| mbedtls_x509_crt_init( &srvcert ); |
| mbedtls_x509_crt_init( &cachain ); |
| |
| mbedtls_ssl_config_init( &conf ); |
| mbedtls_ctr_drbg_init( &ctr_drbg ); |
| memset( threads, 0, sizeof(threads) ); |
| mbedtls_net_init( &listen_fd ); |
| mbedtls_net_init( &client_fd ); |
| |
| mbedtls_mutex_init( &debug_mutex ); |
| |
| base_info.config = &conf; |
| |
| /* |
| * We use only a single entropy source that is used in all the threads. |
| */ |
| mbedtls_entropy_init( &entropy ); |
| |
| /* |
| * 1. Load the certificates and private RSA key |
| */ |
| mbedtls_printf( "\n . 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\n ! mbedtls_x509_crt_parse returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| ret = mbedtls_x509_crt_parse( &cachain, (const unsigned char *) mbedtls_test_cas_pem, |
| mbedtls_test_cas_pem_len ); |
| if( ret != 0 ) |
| { |
| mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_pk_init( &pkey ); |
| 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\n ! mbedtls_pk_parse_key returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf( " ok\n" ); |
| |
| /* |
| * 1b. Seed the random number generator |
| */ |
| mbedtls_printf( " . Seeding the random number generator..." ); |
| |
| 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 -0x%04x\n", |
| -ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf( " ok\n" ); |
| |
| /* |
| * 1c. Prepare SSL configuration |
| */ |
| mbedtls_printf( " . Setting up the SSL data...." ); |
| |
| 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 -0x%04x\n", |
| -ret ); |
| goto exit; |
| } |
| |
| mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg ); |
| mbedtls_ssl_conf_dbg( &conf, my_mutexed_debug, stdout ); |
| |
| /* mbedtls_ssl_cache_get() and mbedtls_ssl_cache_set() are thread-safe if |
| * MBEDTLS_THREADING_C is set. |
| */ |
| #if defined(MBEDTLS_SSL_CACHE_C) |
| mbedtls_ssl_conf_session_cache( &conf, &cache, |
| mbedtls_ssl_cache_get, |
| mbedtls_ssl_cache_set ); |
| #endif |
| |
| mbedtls_ssl_conf_ca_chain( &conf, &cachain, NULL ); |
| if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) ) != 0 ) |
| { |
| mbedtls_printf( " failed\n ! 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\n ! mbedtls_net_bind returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf( " ok\n" ); |
| |
| reset: |
| #ifdef MBEDTLS_ERROR_C |
| if( ret != 0 ) |
| { |
| char error_buf[100]; |
| mbedtls_strerror( ret, error_buf, 100 ); |
| mbedtls_printf( " [ main ] Last error was: -0x%04x - %s\n", -ret, error_buf ); |
| } |
| #endif |
| |
| /* |
| * 3. Wait until a client connects |
| */ |
| mbedtls_printf( " [ main ] Waiting for a remote connection\n" ); |
| |
| if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd, |
| NULL, 0, NULL ) ) != 0 ) |
| { |
| mbedtls_printf( " [ main ] failed: mbedtls_net_accept returned -0x%04x\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf( " [ main ] ok\n" ); |
| mbedtls_printf( " [ main ] Creating a new thread\n" ); |
| |
| if( ( ret = thread_create( &client_fd ) ) != 0 ) |
| { |
| mbedtls_printf( " [ main ] failed: thread_create returned %d\n", ret ); |
| mbedtls_net_free( &client_fd ); |
| goto reset; |
| } |
| |
| ret = 0; |
| goto reset; |
| |
| exit: |
| mbedtls_x509_crt_free( &srvcert ); |
| mbedtls_pk_free( &pkey ); |
| #if defined(MBEDTLS_SSL_CACHE_C) |
| mbedtls_ssl_cache_free( &cache ); |
| #endif |
| mbedtls_ctr_drbg_free( &ctr_drbg ); |
| mbedtls_entropy_free( &entropy ); |
| mbedtls_ssl_config_free( &conf ); |
| |
| mbedtls_net_free( &listen_fd ); |
| |
| mbedtls_mutex_free( &debug_mutex ); |
| |
| #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) |
| mbedtls_memory_buffer_alloc_free(); |
| #endif |
| |
| #if defined(_WIN32) |
| mbedtls_printf( " Press Enter to exit this program.\n" ); |
| fflush( stdout ); getchar(); |
| #endif |
| |
| mbedtls_exit( ret ); |
| } |
| |
| #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_THREADING_C && |
| MBEDTLS_THREADING_PTHREAD && MBEDTLS_PEM_PARSE_C */ |
