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18b78c7498
mbedtls/programs/ssl/ssl_mail_client.c
Rich Evans 18b78c7498 cleanup programs 
Clean up the contents of programs, add more guards to includes, move all
defines to the top of the top of files, remove some unused includes
2015-02-13 13:50:05 +00:00

858 lines
25 KiB
C
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/*
* SSL client for SMTP servers
*
* Copyright (C) 2006-2012, ARM Limited, All Rights Reserved
*
* This file is part of mbed TLS (https://polarssl.org)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#if !defined(POLARSSL_CONFIG_FILE)
#include "polarssl/config.h"
#else
#include POLARSSL_CONFIG_FILE
#endif
#if defined(POLARSSL_PLATFORM_C)
#include "polarssl/platform.h"
#else
#include <stdio.h>
#define polarssl_fprintf fprintf
#define polarssl_printf printf
#endif
#if defined(POLARSSL_BIGNUM_C) && defined(POLARSSL_ENTROPY_C) && \
defined(POLARSSL_SSL_TLS_C) && defined(POLARSSL_SSL_CLI_C) && \
defined(POLARSSL_NET_C) && defined(POLARSSL_RSA_C) && \
defined(POLARSSL_CTR_DRBG_C) && defined(POLARSSL_X509_CRT_PARSE_C) && \
defined(POLARSSL_FS_IO)
#include "polarssl/base64.h"
#include "polarssl/error.h"
#include "polarssl/net.h"
#include "polarssl/ssl.h"
#include "polarssl/entropy.h"
#include "polarssl/ctr_drbg.h"
#include "polarssl/certs.h"
#include "polarssl/x509.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#endif
#if !defined(_MSC_VER) || defined(EFIX64) || defined(EFI32)
#include <unistd.h>
#else
#include <io.h>
#define read _read
#define write _write
#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(POLARSSL_BIGNUM_C) || !defined(POLARSSL_ENTROPY_C) || \
!defined(POLARSSL_SSL_TLS_C) || !defined(POLARSSL_SSL_CLI_C) || \
!defined(POLARSSL_NET_C) || !defined(POLARSSL_RSA_C) || \
!defined(POLARSSL_CTR_DRBG_C) || !defined(POLARSSL_X509_CRT_PARSE_C) ||\
!defined(POLARSSL_FS_IO)
int main( int argc, char *argv[] )
{
((void) argc);
((void) argv);
polarssl_printf("POLARSSL_BIGNUM_C and/or POLARSSL_ENTROPY_C and/or "
"POLARSSL_SSL_TLS_C and/or POLARSSL_SSL_CLI_C and/or "
"POLARSSL_NET_C and/or POLARSSL_RSA_C and/or "
"POLARSSL_CTR_DRBG_C and/or POLARSSL_X509_CRT_PARSE_C "
"not defined.\n");
return( 0 );
}
#else
/*
* global options
*/
struct options
{
const char *server_name; /* hostname of the server (client only) */
int 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 *str )
{
if( level < opt.debug_level )
{
polarssl_fprintf( (FILE *) ctx, "%s", str );
fflush( (FILE *) ctx );
}
}
static int do_handshake( ssl_context *ssl, struct options *opt )
{
int ret;
unsigned char buf[1024];
memset(buf, 0, 1024);
/*
* 4. Handshake
*/
polarssl_printf( " . Performing the SSL/TLS handshake..." );
fflush( stdout );
while( ( ret = ssl_handshake( ssl ) ) != 0 )
{
if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE )
{
#if defined(POLARSSL_ERROR_C)
polarssl_strerror( ret, (char *) buf, 1024 );
#endif
polarssl_printf( " failed\n ! ssl_handshake returned %d: %s\n\n", ret, buf );
return( -1 );
}
}
polarssl_printf( " ok\n [ Ciphersuite is %s ]\n",
ssl_get_ciphersuite( ssl ) );
/*
* 5. Verify the server certificate
*/
polarssl_printf( " . Verifying peer X.509 certificate..." );
/* In real life, we may want to bail out when ret != 0 */
if( ( ret = ssl_get_verify_result( ssl ) ) != 0 )
{
polarssl_printf( " failed\n" );
if( ( ret & BADCERT_EXPIRED ) != 0 )
polarssl_printf( " ! server certificate has expired\n" );
if( ( ret & BADCERT_REVOKED ) != 0 )
polarssl_printf( " ! server certificate has been revoked\n" );
if( ( ret & BADCERT_CN_MISMATCH ) != 0 )
polarssl_printf( " ! CN mismatch (expected CN=%s)\n", opt->server_name );
if( ( ret & BADCERT_NOT_TRUSTED ) != 0 )
polarssl_printf( " ! self-signed or not signed by a trusted CA\n" );
polarssl_printf( "\n" );
}
else
polarssl_printf( " ok\n" );
polarssl_printf( " . Peer certificate information ...\n" );
x509_crt_info( (char *) buf, sizeof( buf ) - 1, " ",
ssl_get_peer_cert( ssl ) );
polarssl_printf( "%s\n", buf );
return( 0 );
}
static int write_ssl_data( ssl_context *ssl, unsigned char *buf, size_t len )
{
int ret;
polarssl_printf("\n%s", buf);
while( len && ( ret = ssl_write( ssl, buf, len ) ) <= 0 )
{
if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE )
{
polarssl_printf( " failed\n ! ssl_write returned %d\n\n", ret );
return -1;
}
}
return( 0 );
}
static int write_ssl_and_get_response( ssl_context *ssl, unsigned char *buf, size_t len )
{
int ret;
unsigned char data[128];
char code[4];
size_t i, idx = 0;
polarssl_printf("\n%s", buf);
while( len && ( ret = ssl_write( ssl, buf, len ) ) <= 0 )
{
if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE )
{
polarssl_printf( " failed\n ! ssl_write returned %d\n\n", ret );
return -1;
}
}
do
{
len = sizeof( data ) - 1;
memset( data, 0, sizeof( data ) );
ret = ssl_read( ssl, data, len );
if( ret == POLARSSL_ERR_NET_WANT_READ || ret == POLARSSL_ERR_NET_WANT_WRITE )
continue;
if( ret == POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY )
return -1;
if( ret <= 0 )
{
polarssl_printf( "failed\n ! ssl_read returned %d\n\n", ret );
return -1;
}
polarssl_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( int sock_fd, unsigned char *buf, size_t len )
{
int ret;
unsigned char data[128];
char code[4];
size_t i, idx = 0;
polarssl_printf("\n%s", buf);
if( len && ( ret = write( sock_fd, buf, len ) ) <= 0 )
{
polarssl_printf( " failed\n ! ssl_write returned %d\n\n", ret );
return -1;
}
do
{
len = sizeof( data ) - 1;
memset( data, 0, sizeof( data ) );
ret = read( sock_fd, data, len );
if( ret <= 0 )
{
polarssl_printf( "failed\n ! read returned %d\n\n", ret );
return -1;
}
data[len] = '\0';
polarssl_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 );
}
#if defined(POLARSSL_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 POLARSSL_BASE64_C)\n"
#endif /* POLARSSL_BASE64_C */
#if defined(POLARSSL_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 (POLARSSL_FS_IO not defined)\n"
#endif /* POLARSSL_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"
int main( int argc, char *argv[] )
{
int ret = 0, len, server_fd;
unsigned char buf[1024];
#if defined(POLARSSL_BASE64_C)
unsigned char base[1024];
#endif
char hostname[32];
const char *pers = "ssl_mail_client";
entropy_context entropy;
ctr_drbg_context ctr_drbg;
ssl_context ssl;
x509_crt cacert;
x509_crt clicert;
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.
*/
server_fd = 0;
memset( &ssl, 0, sizeof( ssl_context ) );
memset( &buf, 0, sizeof( buf ) );
x509_crt_init( &cacert );
x509_crt_init( &clicert );
pk_init( &pkey );
if( argc == 0 )
{
usage:
polarssl_printf( USAGE );
list = ssl_list_ciphersuites();
while( *list )
{
polarssl_printf(" %s\n", ssl_get_ciphersuite_name( *list ) );
list++;
}
polarssl_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 = atoi( q );
if( opt.server_port < 1 || opt.server_port > 65535 )
goto usage;
}
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] = 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
*/
polarssl_printf( "\n . Seeding the random number generator..." );
fflush( stdout );
entropy_init( &entropy );
if( ( ret = ctr_drbg_init( &ctr_drbg, entropy_func, &entropy,
(const unsigned char *) pers,
strlen( pers ) ) ) != 0 )
{
polarssl_printf( " failed\n ! ctr_drbg_init returned %d\n", ret );
goto exit;
}
polarssl_printf( " ok\n" );
/*
* 1.1. Load the trusted CA
*/
polarssl_printf( " . Loading the CA root certificate ..." );
fflush( stdout );
#if defined(POLARSSL_FS_IO)
if( strlen( opt.ca_file ) )
ret = x509_crt_parse_file( &cacert, opt.ca_file );
else
#endif
#if defined(POLARSSL_CERTS_C)
ret = x509_crt_parse( &cacert, (const unsigned char *) test_ca_list,
strlen( test_ca_list ) );
#else
{
ret = 1;
polarssl_printf("POLARSSL_CERTS_C not defined.");
}
#endif
if( ret < 0 )
{
polarssl_printf( " failed\n ! x509_crt_parse returned %d\n\n", ret );
goto exit;
}
polarssl_printf( " ok (%d skipped)\n", ret );
/*
* 1.2. Load own certificate and private key
*
* (can be skipped if client authentication is not required)
*/
polarssl_printf( " . Loading the client cert. and key..." );
fflush( stdout );
#if defined(POLARSSL_FS_IO)
if( strlen( opt.crt_file ) )
ret = x509_crt_parse_file( &clicert, opt.crt_file );
else
#endif
#if defined(POLARSSL_CERTS_C)
ret = x509_crt_parse( &clicert, (const unsigned char *) test_cli_crt,
strlen( test_cli_crt ) );
#else
{
ret = -1;
polarssl_printf("POLARSSL_CERTS_C not defined.");
}
#endif
if( ret != 0 )
{
polarssl_printf( " failed\n ! x509_crt_parse returned %d\n\n", ret );
goto exit;
}
#if defined(POLARSSL_FS_IO)
if( strlen( opt.key_file ) )
ret = pk_parse_keyfile( &pkey, opt.key_file, "" );
else
#endif
#if defined(POLARSSL_CERTS_C)
ret = pk_parse_key( &pkey, (const unsigned char *) test_cli_key,
strlen( test_cli_key ), NULL, 0 );
#else
{
ret = -1;
polarssl_printf("POLARSSL_CERTS_C not defined.");
}
#endif
if( ret != 0 )
{
polarssl_printf( " failed\n ! pk_parse_key returned %d\n\n", ret );
goto exit;
}
polarssl_printf( " ok\n" );
/*
* 2. Start the connection
*/
polarssl_printf( " . Connecting to tcp/%s/%-4d...", opt.server_name,
opt.server_port );
fflush( stdout );
if( ( ret = net_connect( &server_fd, opt.server_name,
opt.server_port ) ) != 0 )
{
polarssl_printf( " failed\n ! net_connect returned %d\n\n", ret );
goto exit;
}
polarssl_printf( " ok\n" );
/*
* 3. Setup stuff
*/
polarssl_printf( " . Setting up the SSL/TLS structure..." );
fflush( stdout );
if( ( ret = ssl_init( &ssl ) ) != 0 )
{
polarssl_printf( " failed\n ! ssl_init returned %d\n\n", ret );
goto exit;
}
polarssl_printf( " ok\n" );
ssl_set_endpoint( &ssl, SSL_IS_CLIENT );
/* OPTIONAL is not optimal for security,
* but makes interop easier in this simplified example */
ssl_set_authmode( &ssl, SSL_VERIFY_OPTIONAL );
/* SSLv3 is deprecated, set minimum to TLS 1.0 */
ssl_set_min_version( &ssl, SSL_MAJOR_VERSION_3, SSL_MINOR_VERSION_1 );
/* RC4 is deprecated, disable it */
ssl_set_arc4_support( &ssl, SSL_ARC4_DISABLED );
ssl_set_rng( &ssl, ctr_drbg_random, &ctr_drbg );
ssl_set_dbg( &ssl, my_debug, stdout );
ssl_set_bio( &ssl, net_recv, &server_fd,
net_send, &server_fd );
if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER )
ssl_set_ciphersuites( &ssl, opt.force_ciphersuite );
ssl_set_ca_chain( &ssl, &cacert, NULL, opt.server_name );
if( ( ret = ssl_set_own_cert( &ssl, &clicert, &pkey ) ) != 0 )
{
polarssl_printf( " failed\n ! ssl_set_own_cert returned %d\n\n", ret );
goto exit;
}
#if defined(POLARSSL_SSL_SERVER_NAME_INDICATION)
if( ( ret = ssl_set_hostname( &ssl, opt.server_name ) ) != 0 )
{
polarssl_printf( " failed\n ! ssl_set_hostname returned %d\n\n", ret );
goto exit;
}
#endif
if( opt.mode == MODE_SSL_TLS )
{
if( do_handshake( &ssl, &opt ) != 0 )
goto exit;
polarssl_printf( " > Get header from server:" );
fflush( stdout );
ret = write_ssl_and_get_response( &ssl, buf, 0 );
if( ret < 200 || ret > 299 )
{
polarssl_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
polarssl_printf(" ok\n" );
polarssl_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 )
{
polarssl_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
}
else
{
polarssl_printf( " > Get header from server:" );
fflush( stdout );
ret = write_and_get_response( server_fd, buf, 0 );
if( ret < 200 || ret > 299 )
{
polarssl_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
polarssl_printf(" ok\n" );
polarssl_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 )
{
polarssl_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
polarssl_printf(" ok\n" );
polarssl_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 )
{
polarssl_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
polarssl_printf(" ok\n" );
if( do_handshake( &ssl, &opt ) != 0 )
goto exit;
}
#if defined(POLARSSL_BASE64_C)
if( opt.authentication )
{
polarssl_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 )
{
polarssl_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
polarssl_printf(" ok\n" );
polarssl_printf( " > Write username to server: %s", opt.user_name );
fflush( stdout );
n = sizeof( buf );
ret = base64_encode( base, &n, (const unsigned char *) opt.user_name,
strlen( opt.user_name ) );
if( ret != 0 ) {
polarssl_printf( " failed\n ! 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 )
{
polarssl_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
polarssl_printf(" ok\n" );
polarssl_printf( " > Write password to server: %s", opt.user_pwd );
fflush( stdout );
ret = base64_encode( base, &n, (const unsigned char *) opt.user_pwd,
strlen( opt.user_pwd ) );
if( ret != 0 ) {
polarssl_printf( " failed\n ! 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 )
{
polarssl_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
polarssl_printf(" ok\n" );
}
#endif
polarssl_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 )
{
polarssl_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
polarssl_printf(" ok\n" );
polarssl_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 )
{
polarssl_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
polarssl_printf(" ok\n" );
polarssl_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 )
{
polarssl_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
polarssl_printf(" ok\n" );
polarssl_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 )
{
polarssl_printf( " failed\n ! server responded with %d\n\n", ret );
goto exit;
}
polarssl_printf(" ok\n" );
ssl_close_notify( &ssl );
exit:
if( server_fd )
net_close( server_fd );
x509_crt_free( &clicert );
x509_crt_free( &cacert );
pk_free( &pkey );
ssl_free( &ssl );
ctr_drbg_free( &ctr_drbg );
entropy_free( &entropy );
#if defined(_WIN32)
polarssl_printf( " + Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
#endif
return( ret );
}
#endif /* POLARSSL_BIGNUM_C && POLARSSL_ENTROPY_C && POLARSSL_SSL_TLS_C &&
POLARSSL_SSL_CLI_C && POLARSSL_NET_C && POLARSSL_RSA_C **
POLARSSL_CTR_DRBG_C */
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