| /* |
| * SSL client for SMTP servers |
| * |
| * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved |
| * 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. |
| * |
| * This file is part of mbed TLS (https://tls.mbed.org) |
| */ |
| |
| #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> |
| #define mbedtls_fprintf fprintf |
| #define mbedtls_printf printf |
| #endif |
| |
| #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_CTR_DRBG_C) || !defined(MBEDTLS_X509_CRT_PARSE_C) || \ |
| !defined(MBEDTLS_FS_IO) |
| 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"); |
| return( 0 ); |
| } |
| #else |
| |
| #include "mbedtls/base64.h" |
| #include "mbedtls/error.h" |
| #include "mbedtls/net.h" |
| #include "mbedtls/ssl.h" |
| #include "mbedtls/entropy.h" |
| #include "mbedtls/ctr_drbg.h" |
| #include "mbedtls/certs.h" |
| #include "mbedtls/x509.h" |
| |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #if !defined(_MSC_VER) || defined(EFIX64) || defined(EFI32) |
| #include <unistd.h> |
| #else |
| #include <io.h> |
| #endif |
| |
| #if defined(_WIN32) || defined(_WIN32_WCE) |
| #include <winsock2.h> |
| #include <windows.h> |
| |
| #if defined(_MSC_VER) |
| #if defined(_WIN32_WCE) |
| #pragma comment( lib, "ws2.lib" ) |
| #else |
| #pragma comment( lib, "ws2_32.lib" ) |
| #endif |
| #endif /* _MSC_VER */ |
| #endif |
| |
| #define DFL_SERVER_NAME "localhost" |
| #define DFL_SERVER_PORT "465" |
| #define DFL_USER_NAME "user" |
| #define DFL_USER_PWD "password" |
| #define DFL_MAIL_FROM "" |
| #define DFL_MAIL_TO "" |
| #define DFL_DEBUG_LEVEL 0 |
| #define DFL_CA_FILE "" |
| #define DFL_CRT_FILE "" |
| #define DFL_KEY_FILE "" |
| #define DFL_FORCE_CIPHER 0 |
| #define DFL_MODE 0 |
| #define DFL_AUTHENTICATION 0 |
| |
| #define MODE_SSL_TLS 0 |
| #define MODE_STARTTLS 0 |
| |
| #if defined(MBEDTLS_BASE64_C) |
| #define USAGE_AUTH \ |
| " authentication=%%d default: 0 (disabled)\n" \ |
| " user_name=%%s default: \"user\"\n" \ |
| " user_pwd=%%s default: \"password\"\n" |
| #else |
| #define USAGE_AUTH \ |
| " authentication options disabled. (Require MBEDTLS_BASE64_C)\n" |
| #endif /* MBEDTLS_BASE64_C */ |
| |
| #if defined(MBEDTLS_FS_IO) |
| #define USAGE_IO \ |
| " ca_file=%%s default: \"\" (pre-loaded)\n" \ |
| " crt_file=%%s default: \"\" (pre-loaded)\n" \ |
| " key_file=%%s default: \"\" (pre-loaded)\n" |
| #else |
| #define USAGE_IO \ |
| " No file operations available (MBEDTLS_FS_IO not defined)\n" |
| #endif /* MBEDTLS_FS_IO */ |
| |
| #define USAGE \ |
| "\n usage: ssl_mail_client param=<>...\n" \ |
| "\n acceptable parameters:\n" \ |
| " server_name=%%s default: localhost\n" \ |
| " server_port=%%d default: 4433\n" \ |
| " debug_level=%%d default: 0 (disabled)\n" \ |
| " mode=%%d default: 0 (SSL/TLS) (1 for STARTTLS)\n" \ |
| USAGE_AUTH \ |
| " mail_from=%%s default: \"\"\n" \ |
| " mail_to=%%s default: \"\"\n" \ |
| USAGE_IO \ |
| " force_ciphersuite=<name> default: all enabled\n"\ |
| " acceptable ciphersuite names:\n" |
| |
| /* |
| * global options |
| */ |
| struct options |
| { |
| const char *server_name; /* hostname of the server (client only) */ |
| const char *server_port; /* port on which the ssl service runs */ |
| int debug_level; /* level of debugging */ |
| int authentication; /* if authentication is required */ |
| int mode; /* SSL/TLS (0) or STARTTLS (1) */ |
| const char *user_name; /* username to use for authentication */ |
| const char *user_pwd; /* password to use for authentication */ |
| const char *mail_from; /* E-Mail address to use as sender */ |
| const char *mail_to; /* E-Mail address to use as recipient */ |
| const char *ca_file; /* the file with the CA certificate(s) */ |
| const char *crt_file; /* the file with the client certificate */ |
| const char *key_file; /* the file with the client key */ |
| int force_ciphersuite[2]; /* protocol/ciphersuite to use, or all */ |
| } opt; |
| |
| 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 ); |
| } |
| |
| static int do_handshake( mbedtls_ssl_context *ssl ) |
| { |
| int ret; |
| uint32_t flags; |
| unsigned char buf[1024]; |
| memset(buf, 0, 1024); |
| |
| /* |
| * 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 ) |
| { |
| #if defined(MBEDTLS_ERROR_C) |
| mbedtls_strerror( ret, (char *) buf, 1024 ); |
| #endif |
| mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned %d: %s\n\n", ret, buf ); |
| return( -1 ); |
| } |
| } |
| |
| mbedtls_printf( " ok\n [ Ciphersuite is %s ]\n", |
| mbedtls_ssl_get_ciphersuite( ssl ) ); |
| |
| /* |
| * 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" ); |
| |
| mbedtls_printf( " . Peer certificate information ...\n" ); |
| mbedtls_x509_crt_info( (char *) buf, sizeof( buf ) - 1, " ", |
| mbedtls_ssl_get_peer_cert( ssl ) ); |
| mbedtls_printf( "%s\n", buf ); |
| |
| return( 0 ); |
| } |
| |
| static int write_ssl_data( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len ) |
| { |
| int ret; |
| |
| mbedtls_printf("\n%s", buf); |
| while( len && ( 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 ); |
| return -1; |
| } |
| } |
| |
| return( 0 ); |
| } |
| |
| static int write_ssl_and_get_response( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len ) |
| { |
| int ret; |
| unsigned char data[128]; |
| char code[4]; |
| size_t i, idx = 0; |
| |
| mbedtls_printf("\n%s", buf); |
| while( len && ( 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 ); |
| return -1; |
| } |
| } |
| |
| do |
| { |
| len = sizeof( data ) - 1; |
| memset( data, 0, sizeof( data ) ); |
| ret = mbedtls_ssl_read( ssl, data, len ); |
| |
| if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE ) |
| continue; |
| |
| if( ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY ) |
| return -1; |
| |
| if( ret <= 0 ) |
| { |
| mbedtls_printf( "failed\n ! mbedtls_ssl_read returned %d\n\n", ret ); |
| return -1; |
| } |
| |
| mbedtls_printf("\n%s", data); |
| len = ret; |
| for( i = 0; i < len; i++ ) |
| { |
| if( data[i] != '\n' ) |
| { |
| if( idx < 4 ) |
| code[ idx++ ] = data[i]; |
| continue; |
| } |
| |
| if( idx == 4 && code[0] >= '0' && code[0] <= '9' && code[3] == ' ' ) |
| { |
| code[3] = '\0'; |
| return atoi( code ); |
| } |
| |
| idx = 0; |
| } |
| } |
| while( 1 ); |
| } |
| |
| static int write_and_get_response( mbedtls_net_context *sock_fd, unsigned char *buf, size_t len ) |
| { |
| int ret; |
| unsigned char data[128]; |
| char code[4]; |
| size_t i, idx = 0; |
| |
| mbedtls_printf("\n%s", buf); |
| if( len && ( ret = mbedtls_net_send( sock_fd, buf, len ) ) <= 0 ) |
| { |
| mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret ); |
| return -1; |
| } |
| |
| do |
| { |
| len = sizeof( data ) - 1; |
| memset( data, 0, sizeof( data ) ); |
| ret = mbedtls_net_recv( sock_fd, data, len ); |
| |
| if( ret <= 0 ) |
| { |
| mbedtls_printf( "failed\n ! read returned %d\n\n", ret ); |
| return -1; |
| } |
| |
| data[len] = '\0'; |
| mbedtls_printf("\n%s", data); |
| len = ret; |
| for( i = 0; i < len; i++ ) |
| { |
| if( data[i] != '\n' ) |
| { |
| if( idx < 4 ) |
| code[ idx++ ] = data[i]; |
| continue; |
| } |
| |
| if( idx == 4 && code[0] >= '0' && code[0] <= '9' && code[3] == ' ' ) |
| { |
| code[3] = '\0'; |
| return atoi( code ); |
| } |
| |
| idx = 0; |
| } |
| } |
| while( 1 ); |
| } |
| |
| int main( int argc, char *argv[] ) |
| { |
| int ret = 0, len; |
| mbedtls_net_context server_fd; |
| unsigned char buf[1024]; |
| #if defined(MBEDTLS_BASE64_C) |
| unsigned char base[1024]; |
| #endif |
| char hostname[32]; |
| const char *pers = "ssl_mail_client"; |
| |
| mbedtls_entropy_context entropy; |
| mbedtls_ctr_drbg_context ctr_drbg; |
| mbedtls_ssl_context ssl; |
| mbedtls_ssl_config conf; |
| mbedtls_x509_crt cacert; |
| mbedtls_x509_crt clicert; |
| mbedtls_pk_context pkey; |
| int i; |
| size_t n; |
| char *p, *q; |
| const int *list; |
| |
| /* |
| * Make sure memory references are valid in case we exit early. |
| */ |
| mbedtls_net_init( &server_fd ); |
| mbedtls_ssl_init( &ssl ); |
| mbedtls_ssl_config_init( &conf ); |
| memset( &buf, 0, sizeof( buf ) ); |
| mbedtls_x509_crt_init( &cacert ); |
| mbedtls_x509_crt_init( &clicert ); |
| mbedtls_pk_init( &pkey ); |
| mbedtls_ctr_drbg_init( &ctr_drbg ); |
| |
| if( argc == 0 ) |
| { |
| usage: |
| mbedtls_printf( USAGE ); |
| |
| list = mbedtls_ssl_list_ciphersuites(); |
| while( *list ) |
| { |
| mbedtls_printf(" %s\n", mbedtls_ssl_get_ciphersuite_name( *list ) ); |
| list++; |
| } |
| mbedtls_printf("\n"); |
| goto exit; |
| } |
| |
| opt.server_name = DFL_SERVER_NAME; |
| opt.server_port = DFL_SERVER_PORT; |
| opt.debug_level = DFL_DEBUG_LEVEL; |
| opt.authentication = DFL_AUTHENTICATION; |
| opt.mode = DFL_MODE; |
| opt.user_name = DFL_USER_NAME; |
| opt.user_pwd = DFL_USER_PWD; |
| opt.mail_from = DFL_MAIL_FROM; |
| opt.mail_to = DFL_MAIL_TO; |
| opt.ca_file = DFL_CA_FILE; |
| opt.crt_file = DFL_CRT_FILE; |
| opt.key_file = DFL_KEY_FILE; |
| opt.force_ciphersuite[0]= DFL_FORCE_CIPHER; |
| |
| for( i = 1; i < argc; i++ ) |
| { |
| p = argv[i]; |
| if( ( q = strchr( p, '=' ) ) == NULL ) |
| goto usage; |
| *q++ = '\0'; |
| |
| if( strcmp( p, "server_name" ) == 0 ) |
| opt.server_name = q; |
| else if( strcmp( p, "server_port" ) == 0 ) |
| opt.server_port = q; |
| else if( strcmp( p, "debug_level" ) == 0 ) |
| { |
| opt.debug_level = atoi( q ); |
| if( opt.debug_level < 0 || opt.debug_level > 65535 ) |
| goto usage; |
| } |
| else if( strcmp( p, "authentication" ) == 0 ) |
| { |
| opt.authentication = atoi( q ); |
| if( opt.authentication < 0 || opt.authentication > 1 ) |
| goto usage; |
| } |
| else if( strcmp( p, "mode" ) == 0 ) |
| { |
| opt.mode = atoi( q ); |
| if( opt.mode < 0 || opt.mode > 1 ) |
| goto usage; |
| } |
| else if( strcmp( p, "user_name" ) == 0 ) |
| opt.user_name = q; |
| else if( strcmp( p, "user_pwd" ) == 0 ) |
| opt.user_pwd = q; |
| else if( strcmp( p, "mail_from" ) == 0 ) |
| opt.mail_from = q; |
| else if( strcmp( p, "mail_to" ) == 0 ) |
| opt.mail_to = q; |
| else if( strcmp( p, "ca_file" ) == 0 ) |
| opt.ca_file = q; |
| else if( strcmp( p, "crt_file" ) == 0 ) |
| opt.crt_file = q; |
| else if( strcmp( p, "key_file" ) == 0 ) |
| opt.key_file = q; |
| else if( strcmp( p, "force_ciphersuite" ) == 0 ) |
| { |
| opt.force_ciphersuite[0] = -1; |
| |
| opt.force_ciphersuite[0] = mbedtls_ssl_get_ciphersuite_id( q ); |
| |
| if( opt.force_ciphersuite[0] <= 0 ) |
| goto usage; |
| |
| opt.force_ciphersuite[1] = 0; |
| } |
| else |
| goto usage; |
| } |
| |
| /* |
| * 0. Initialize the RNG and the session data |
| */ |
| 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" ); |
| |
| /* |
| * 1.1. Load the trusted CA |
| */ |
| mbedtls_printf( " . Loading the CA root certificate ..." ); |
| fflush( stdout ); |
| |
| #if defined(MBEDTLS_FS_IO) |
| if( strlen( opt.ca_file ) ) |
| ret = mbedtls_x509_crt_parse_file( &cacert, opt.ca_file ); |
| else |
| #endif |
| #if defined(MBEDTLS_CERTS_C) |
| ret = mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas_pem, |
| mbedtls_test_cas_pem_len ); |
| #else |
| { |
| ret = 1; |
| mbedtls_printf("MBEDTLS_CERTS_C not defined."); |
| } |
| #endif |
| if( ret < 0 ) |
| { |
| mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf( " ok (%d skipped)\n", ret ); |
| |
| /* |
| * 1.2. Load own certificate and private key |
| * |
| * (can be skipped if client authentication is not required) |
| */ |
| mbedtls_printf( " . Loading the client cert. and key..." ); |
| fflush( stdout ); |
| |
| #if defined(MBEDTLS_FS_IO) |
| if( strlen( opt.crt_file ) ) |
| ret = mbedtls_x509_crt_parse_file( &clicert, opt.crt_file ); |
| else |
| #endif |
| #if defined(MBEDTLS_CERTS_C) |
| ret = mbedtls_x509_crt_parse( &clicert, (const unsigned char *) mbedtls_test_cli_crt, |
| mbedtls_test_cli_crt_len ); |
| #else |
| { |
| ret = -1; |
| mbedtls_printf("MBEDTLS_CERTS_C not defined."); |
| } |
| #endif |
| if( ret != 0 ) |
| { |
| mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| #if defined(MBEDTLS_FS_IO) |
| if( strlen( opt.key_file ) ) |
| ret = mbedtls_pk_parse_keyfile( &pkey, opt.key_file, "" ); |
| else |
| #endif |
| #if defined(MBEDTLS_CERTS_C) && defined(MBEDTLS_PEM_PARSE_C) |
| ret = mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_cli_key, |
| mbedtls_test_cli_key_len, NULL, 0 ); |
| #else |
| { |
| ret = -1; |
| mbedtls_printf("MBEDTLS_CERTS_C or MBEDTLS_PEM_PARSE_C not defined."); |
| } |
| #endif |
| if( ret != 0 ) |
| { |
| mbedtls_printf( " failed\n ! mbedtls_pk_parse_key returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf( " ok\n" ); |
| |
| /* |
| * 2. Start the connection |
| */ |
| mbedtls_printf( " . Connecting to tcp/%s/%s...", opt.server_name, |
| opt.server_port ); |
| fflush( stdout ); |
| |
| if( ( ret = mbedtls_net_connect( &server_fd, opt.server_name, |
| opt.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" ); |
| |
| /* |
| * 3. 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; |
| } |
| |
| /* 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_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg ); |
| mbedtls_ssl_conf_dbg( &conf, my_debug, stdout ); |
| |
| if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER ) |
| mbedtls_ssl_conf_ciphersuites( &conf, opt.force_ciphersuite ); |
| |
| mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL ); |
| if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &clicert, &pkey ) ) != 0 ) |
| { |
| mbedtls_printf( " failed\n ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret ); |
| goto exit; |
| } |
| |
| 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, opt.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 ); |
| |
| mbedtls_printf( " ok\n" ); |
| |
| if( opt.mode == MODE_SSL_TLS ) |
| { |
| if( do_handshake( &ssl ) != 0 ) |
| goto exit; |
| |
| mbedtls_printf( " > Get header from server:" ); |
| fflush( stdout ); |
| |
| ret = write_ssl_and_get_response( &ssl, buf, 0 ); |
| if( ret < 200 || ret > 299 ) |
| { |
| mbedtls_printf( " failed\n ! server responded with %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf(" ok\n" ); |
| |
| mbedtls_printf( " > Write EHLO to server:" ); |
| fflush( stdout ); |
| |
| gethostname( hostname, 32 ); |
| len = sprintf( (char *) buf, "EHLO %s\r\n", hostname ); |
| ret = write_ssl_and_get_response( &ssl, buf, len ); |
| if( ret < 200 || ret > 299 ) |
| { |
| mbedtls_printf( " failed\n ! server responded with %d\n\n", ret ); |
| goto exit; |
| } |
| } |
| else |
| { |
| mbedtls_printf( " > Get header from server:" ); |
| fflush( stdout ); |
| |
| ret = write_and_get_response( &server_fd, buf, 0 ); |
| if( ret < 200 || ret > 299 ) |
| { |
| mbedtls_printf( " failed\n ! server responded with %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf(" ok\n" ); |
| |
| mbedtls_printf( " > Write EHLO to server:" ); |
| fflush( stdout ); |
| |
| gethostname( hostname, 32 ); |
| len = sprintf( (char *) buf, "EHLO %s\r\n", hostname ); |
| ret = write_and_get_response( &server_fd, buf, len ); |
| if( ret < 200 || ret > 299 ) |
| { |
| mbedtls_printf( " failed\n ! server responded with %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf(" ok\n" ); |
| |
| mbedtls_printf( " > Write STARTTLS to server:" ); |
| fflush( stdout ); |
| |
| gethostname( hostname, 32 ); |
| len = sprintf( (char *) buf, "STARTTLS\r\n" ); |
| ret = write_and_get_response( &server_fd, buf, len ); |
| if( ret < 200 || ret > 299 ) |
| { |
| mbedtls_printf( " failed\n ! server responded with %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf(" ok\n" ); |
| |
| if( do_handshake( &ssl ) != 0 ) |
| goto exit; |
| } |
| |
| #if defined(MBEDTLS_BASE64_C) |
| if( opt.authentication ) |
| { |
| mbedtls_printf( " > Write AUTH LOGIN to server:" ); |
| fflush( stdout ); |
| |
| len = sprintf( (char *) buf, "AUTH LOGIN\r\n" ); |
| ret = write_ssl_and_get_response( &ssl, buf, len ); |
| if( ret < 200 || ret > 399 ) |
| { |
| mbedtls_printf( " failed\n ! server responded with %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf(" ok\n" ); |
| |
| mbedtls_printf( " > Write username to server: %s", opt.user_name ); |
| fflush( stdout ); |
| |
| ret = mbedtls_base64_encode( base, sizeof( base ), &n, (const unsigned char *) opt.user_name, |
| strlen( opt.user_name ) ); |
| |
| if( ret != 0 ) { |
| mbedtls_printf( " failed\n ! mbedtls_base64_encode returned %d\n\n", ret ); |
| goto exit; |
| } |
| len = sprintf( (char *) buf, "%s\r\n", base ); |
| ret = write_ssl_and_get_response( &ssl, buf, len ); |
| if( ret < 300 || ret > 399 ) |
| { |
| mbedtls_printf( " failed\n ! server responded with %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf(" ok\n" ); |
| |
| mbedtls_printf( " > Write password to server: %s", opt.user_pwd ); |
| fflush( stdout ); |
| |
| ret = mbedtls_base64_encode( base, sizeof( base ), &n, (const unsigned char *) opt.user_pwd, |
| strlen( opt.user_pwd ) ); |
| |
| if( ret != 0 ) { |
| mbedtls_printf( " failed\n ! mbedtls_base64_encode returned %d\n\n", ret ); |
| goto exit; |
| } |
| len = sprintf( (char *) buf, "%s\r\n", base ); |
| ret = write_ssl_and_get_response( &ssl, buf, len ); |
| if( ret < 200 || ret > 399 ) |
| { |
| mbedtls_printf( " failed\n ! server responded with %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf(" ok\n" ); |
| } |
| #endif |
| |
| mbedtls_printf( " > Write MAIL FROM to server:" ); |
| fflush( stdout ); |
| |
| len = sprintf( (char *) buf, "MAIL FROM:<%s>\r\n", opt.mail_from ); |
| ret = write_ssl_and_get_response( &ssl, buf, len ); |
| if( ret < 200 || ret > 299 ) |
| { |
| mbedtls_printf( " failed\n ! server responded with %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf(" ok\n" ); |
| |
| mbedtls_printf( " > Write RCPT TO to server:" ); |
| fflush( stdout ); |
| |
| len = sprintf( (char *) buf, "RCPT TO:<%s>\r\n", opt.mail_to ); |
| ret = write_ssl_and_get_response( &ssl, buf, len ); |
| if( ret < 200 || ret > 299 ) |
| { |
| mbedtls_printf( " failed\n ! server responded with %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf(" ok\n" ); |
| |
| mbedtls_printf( " > Write DATA to server:" ); |
| fflush( stdout ); |
| |
| len = sprintf( (char *) buf, "DATA\r\n" ); |
| ret = write_ssl_and_get_response( &ssl, buf, len ); |
| if( ret < 300 || ret > 399 ) |
| { |
| mbedtls_printf( " failed\n ! server responded with %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf(" ok\n" ); |
| |
| mbedtls_printf( " > Write content to server:" ); |
| fflush( stdout ); |
| |
| len = sprintf( (char *) buf, "From: %s\r\nSubject: mbed TLS Test mail\r\n\r\n" |
| "This is a simple test mail from the " |
| "mbed TLS mail client example.\r\n" |
| "\r\n" |
| "Enjoy!", opt.mail_from ); |
| ret = write_ssl_data( &ssl, buf, len ); |
| |
| len = sprintf( (char *) buf, "\r\n.\r\n"); |
| ret = write_ssl_and_get_response( &ssl, buf, len ); |
| if( ret < 200 || ret > 299 ) |
| { |
| mbedtls_printf( " failed\n ! server responded with %d\n\n", ret ); |
| goto exit; |
| } |
| |
| mbedtls_printf(" ok\n" ); |
| |
| mbedtls_ssl_close_notify( &ssl ); |
| |
| exit: |
| |
| mbedtls_net_free( &server_fd ); |
| mbedtls_x509_crt_free( &clicert ); |
| mbedtls_x509_crt_free( &cacert ); |
| 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 |
| |
| return( ret ); |
| } |
| #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_SSL_TLS_C && |
| MBEDTLS_SSL_CLI_C && MBEDTLS_NET_C && MBEDTLS_RSA_C ** |
| MBEDTLS_CTR_DRBG_C */ |