diff options
Diffstat (limited to 'lib/mbedtls-2.27.0/programs/ssl/ssl_mail_client.c')
| -rw-r--r-- | lib/mbedtls-2.27.0/programs/ssl/ssl_mail_client.c | 859 |
1 files changed, 859 insertions, 0 deletions
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_mail_client.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_mail_client.c new file mode 100644 index 0000000..fb965f6 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/ssl/ssl_mail_client.c @@ -0,0 +1,859 @@ +/* + * SSL client for SMTP servers + * + * 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. + */ + +/* Enable definition of gethostname() even when compiling with -std=c99. Must + * be set before config.h, which pulls in glibc's features.h indirectly. + * Harmless on other platforms. */ +#define _POSIX_C_SOURCE 200112L +#define _XOPEN_SOURCE 600 + +#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_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"); + mbedtls_exit( 0 ); +} +#else + +#include "mbedtls/base64.h" +#include "mbedtls/error.h" +#include "mbedtls/net_sockets.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: \"" DFL_USER_NAME "\"\n" \ + " user_pwd=%%s default: \"" DFL_USER_PWD "\"\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: " DFL_SERVER_NAME "\n" \ + " server_port=%%d default: " DFL_SERVER_PORT "\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_net_send 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 ! mbedtls_net_recv 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 = 1, len; + int exit_code = MBEDTLS_EXIT_FAILURE; + mbedtls_net_context server_fd; +#if defined(MBEDTLS_BASE64_C) + unsigned char base[1024]; + /* buf is used as the destination buffer for printing base with the format: + * "%s\r\n". Hence, the size of buf should be at least the size of base + * plus 2 bytes for the \r and \n characters. + */ + unsigned char buf[sizeof( base ) + 2]; +#else + unsigned char buf[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) && defined(MBEDTLS_PEM_PARSE_C) + ret = mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas_pem, + mbedtls_test_cas_pem_len ); +#else + { + mbedtls_printf("MBEDTLS_CERTS_C and/or MBEDTLS_PEM_PARSE_C not defined."); + goto exit; + } +#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 + { + mbedtls_printf("MBEDTLS_CERTS_C not defined."); + goto exit; + } +#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 + { + mbedtls_printf("MBEDTLS_CERTS_C or MBEDTLS_PEM_PARSE_C not defined."); + goto exit; + } +#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_code = MBEDTLS_EXIT_SUCCESS; + +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 + + 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_CTR_DRBG_C */ |