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Diffstat (limited to 'lib/mbedtls-2.27.0/programs/ssl/ssl_client1.c')
-rw-r--r--lib/mbedtls-2.27.0/programs/ssl/ssl_client1.c318
1 files changed, 318 insertions, 0 deletions
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_client1.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_client1.c
new file mode 100644
index 0000000..61a849c
--- /dev/null
+++ b/lib/mbedtls-2.27.0/programs/ssl/ssl_client1.c
@@ -0,0 +1,318 @@
+/*
+ * SSL client demonstration program
+ *
+ * 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_time time
+#define mbedtls_time_t time_t
+#define mbedtls_fprintf fprintf
+#define mbedtls_printf printf
+#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_ENTROPY_C) || \
+ !defined(MBEDTLS_SSL_TLS_C) || !defined(MBEDTLS_SSL_CLI_C) || \
+ !defined(MBEDTLS_NET_C) || !defined(MBEDTLS_RSA_C) || \
+ !defined(MBEDTLS_CERTS_C) || !defined(MBEDTLS_PEM_PARSE_C) || \
+ !defined(MBEDTLS_CTR_DRBG_C) || !defined(MBEDTLS_X509_CRT_PARSE_C)
+int main( void )
+{
+ mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_ENTROPY_C and/or "
+ "MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_CLI_C and/or "
+ "MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or "
+ "MBEDTLS_CTR_DRBG_C and/or MBEDTLS_X509_CRT_PARSE_C "
+ "not defined.\n");
+ mbedtls_exit( 0 );
+}
+#else
+
+#include "mbedtls/net_sockets.h"
+#include "mbedtls/debug.h"
+#include "mbedtls/ssl.h"
+#include "mbedtls/entropy.h"
+#include "mbedtls/ctr_drbg.h"
+#include "mbedtls/error.h"
+#include "mbedtls/certs.h"
+
+#include <string.h>
+
+#define SERVER_PORT "4433"
+#define SERVER_NAME "localhost"
+#define GET_REQUEST "GET / HTTP/1.0\r\n\r\n"
+
+#define DEBUG_LEVEL 1
+
+
+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;
+ int exit_code = MBEDTLS_EXIT_FAILURE;
+ mbedtls_net_context server_fd;
+ uint32_t flags;
+ unsigned char buf[1024];
+ const char *pers = "ssl_client1";
+
+ mbedtls_entropy_context entropy;
+ mbedtls_ctr_drbg_context ctr_drbg;
+ mbedtls_ssl_context ssl;
+ mbedtls_ssl_config conf;
+ mbedtls_x509_crt cacert;
+
+#if defined(MBEDTLS_DEBUG_C)
+ mbedtls_debug_set_threshold( DEBUG_LEVEL );
+#endif
+
+ /*
+ * 0. Initialize the RNG and the session data
+ */
+ mbedtls_net_init( &server_fd );
+ mbedtls_ssl_init( &ssl );
+ mbedtls_ssl_config_init( &conf );
+ mbedtls_x509_crt_init( &cacert );
+ mbedtls_ctr_drbg_init( &ctr_drbg );
+
+ mbedtls_printf( "\n . Seeding the random number generator..." );
+ fflush( stdout );
+
+ mbedtls_entropy_init( &entropy );
+ if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
+ (const unsigned char *) pers,
+ strlen( pers ) ) ) != 0 )
+ {
+ mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d\n", ret );
+ goto exit;
+ }
+
+ mbedtls_printf( " ok\n" );
+
+ /*
+ * 0. Initialize certificates
+ */
+ mbedtls_printf( " . Loading the CA root certificate ..." );
+ fflush( stdout );
+
+ ret = mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas_pem,
+ mbedtls_test_cas_pem_len );
+ if( ret < 0 )
+ {
+ mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned -0x%x\n\n", (unsigned int) -ret );
+ goto exit;
+ }
+
+ mbedtls_printf( " ok (%d skipped)\n", ret );
+
+ /*
+ * 1. Start the connection
+ */
+ mbedtls_printf( " . Connecting to tcp/%s/%s...", SERVER_NAME, SERVER_PORT );
+ fflush( stdout );
+
+ if( ( ret = mbedtls_net_connect( &server_fd, SERVER_NAME,
+ SERVER_PORT, MBEDTLS_NET_PROTO_TCP ) ) != 0 )
+ {
+ mbedtls_printf( " failed\n ! mbedtls_net_connect returned %d\n\n", ret );
+ goto exit;
+ }
+
+ mbedtls_printf( " ok\n" );
+
+ /*
+ * 2. Setup stuff
+ */
+ mbedtls_printf( " . Setting up the SSL/TLS structure..." );
+ fflush( stdout );
+
+ if( ( ret = mbedtls_ssl_config_defaults( &conf,
+ MBEDTLS_SSL_IS_CLIENT,
+ MBEDTLS_SSL_TRANSPORT_STREAM,
+ MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
+ {
+ mbedtls_printf( " failed\n ! mbedtls_ssl_config_defaults returned %d\n\n", ret );
+ goto exit;
+ }
+
+ mbedtls_printf( " ok\n" );
+
+ /* OPTIONAL is not optimal for security,
+ * but makes interop easier in this simplified example */
+ mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_OPTIONAL );
+ mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL );
+ mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
+ mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
+
+ if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
+ {
+ mbedtls_printf( " failed\n ! mbedtls_ssl_setup returned %d\n\n", ret );
+ goto exit;
+ }
+
+ if( ( ret = mbedtls_ssl_set_hostname( &ssl, SERVER_NAME ) ) != 0 )
+ {
+ mbedtls_printf( " failed\n ! mbedtls_ssl_set_hostname returned %d\n\n", ret );
+ goto exit;
+ }
+
+ mbedtls_ssl_set_bio( &ssl, &server_fd, mbedtls_net_send, mbedtls_net_recv, NULL );
+
+ /*
+ * 4. Handshake
+ */
+ mbedtls_printf( " . Performing the SSL/TLS handshake..." );
+ fflush( stdout );
+
+ while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
+ {
+ if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
+ {
+ mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n", (unsigned int) -ret );
+ goto exit;
+ }
+ }
+
+ mbedtls_printf( " ok\n" );
+
+ /*
+ * 5. Verify the server certificate
+ */
+ mbedtls_printf( " . Verifying peer X.509 certificate..." );
+
+ /* In real life, we probably want to bail out when ret != 0 */
+ if( ( flags = mbedtls_ssl_get_verify_result( &ssl ) ) != 0 )
+ {
+ char vrfy_buf[512];
+
+ mbedtls_printf( " failed\n" );
+
+ mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), " ! ", flags );
+
+ mbedtls_printf( "%s\n", vrfy_buf );
+ }
+ else
+ mbedtls_printf( " ok\n" );
+
+ /*
+ * 3. Write the GET request
+ */
+ mbedtls_printf( " > Write to server:" );
+ fflush( stdout );
+
+ len = sprintf( (char *) buf, GET_REQUEST );
+
+ while( ( ret = mbedtls_ssl_write( &ssl, buf, len ) ) <= 0 )
+ {
+ if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
+ {
+ mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret );
+ goto exit;
+ }
+ }
+
+ len = ret;
+ mbedtls_printf( " %d bytes written\n\n%s", len, (char *) buf );
+
+ /*
+ * 7. Read the HTTP response
+ */
+ mbedtls_printf( " < Read from server:" );
+ 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 == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY )
+ break;
+
+ if( ret < 0 )
+ {
+ mbedtls_printf( "failed\n ! mbedtls_ssl_read returned %d\n\n", ret );
+ break;
+ }
+
+ if( ret == 0 )
+ {
+ mbedtls_printf( "\n\nEOF\n\n" );
+ break;
+ }
+
+ len = ret;
+ mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf );
+ }
+ while( 1 );
+
+ mbedtls_ssl_close_notify( &ssl );
+
+ exit_code = MBEDTLS_EXIT_SUCCESS;
+
+exit:
+
+#ifdef MBEDTLS_ERROR_C
+ if( exit_code != MBEDTLS_EXIT_SUCCESS )
+ {
+ char error_buf[100];
+ mbedtls_strerror( ret, error_buf, 100 );
+ mbedtls_printf("Last error was: %d - %s\n\n", ret, error_buf );
+ }
+#endif
+
+ mbedtls_net_free( &server_fd );
+
+ mbedtls_x509_crt_free( &cacert );
+ 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_ENTROPY_C && MBEDTLS_SSL_TLS_C &&
+ MBEDTLS_SSL_CLI_C && MBEDTLS_NET_C && MBEDTLS_RSA_C &&
+ MBEDTLS_CERTS_C && MBEDTLS_PEM_PARSE_C && MBEDTLS_CTR_DRBG_C &&
+ MBEDTLS_X509_CRT_PARSE_C */
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