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mbedtls/programs/ssl/ssl_pthread_server.c
Manuel Pégourié-Gonnard 6b0d268bc9 Add ssl_close_notify() to servers that missed it
2014-03-31 11:28:11 +02:00

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/*
* SSL server demonstration program using pthread for handling multiple
* clients.
*
* Copyright (C) 2006-2013, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* 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.
*/
#include "polarssl/config.h"
#if defined(_WIN32)
#include <windows.h>
#endif
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "polarssl/entropy.h"
#include "polarssl/ctr_drbg.h"
#include "polarssl/certs.h"
#include "polarssl/x509.h"
#include "polarssl/ssl.h"
#include "polarssl/net.h"
#include "polarssl/error.h"
#if defined(POLARSSL_SSL_CACHE_C)
#include "polarssl/ssl_cache.h"
#endif
#if defined(POLARSSL_MEMORY_BUFFER_ALLOC_C)
#include "polarssl/memory.h"
#endif
#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_CERTS_C) || \
!defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_SSL_TLS_C) || \
!defined(POLARSSL_SSL_SRV_C) || !defined(POLARSSL_NET_C) || \
!defined(POLARSSL_RSA_C) || !defined(POLARSSL_CTR_DRBG_C) || \
!defined(POLARSSL_X509_CRT_PARSE_C) || \
!defined(POLARSSL_THREADING_C) || !defined(POLARSSL_THREADING_PTHREAD)
int main( int argc, char *argv[] )
{
((void) argc);
((void) argv);
printf("POLARSSL_BIGNUM_C and/or POLARSSL_CERTS_C and/or POLARSSL_ENTROPY_C "
"and/or POLARSSL_SSL_TLS_C and/or POLARSSL_SSL_SRV_C and/or "
"POLARSSL_NET_C and/or POLARSSL_RSA_C and/or "
"POLARSSL_CTR_DRBG_C and/or POLARSSL_X509_CRT_PARSE_C and/or "
"POLARSSL_THREADING_C and/or POLARSSL_THREADING_PTHREAD "
"not defined.\n");
return( 0 );
}
#else
#define HTTP_RESPONSE \
"HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \
"<h2>PolarSSL Test Server</h2>\r\n" \
"<p>Successful connection using: %s</p>\r\n"
#define DEBUG_LEVEL 0
threading_mutex_t debug_mutex;
static void my_mutexed_debug( void *ctx, int level, const char *str )
{
polarssl_mutex_lock( &debug_mutex );
if( level < DEBUG_LEVEL )
{
fprintf( (FILE *) ctx, "%s", str );
fflush( (FILE *) ctx );
}
polarssl_mutex_unlock( &debug_mutex );
}
typedef struct {
int client_fd;
int thread_complete;
entropy_context *entropy;
#if defined(POLARSSL_SSL_CACHE_C)
ssl_cache_context *cache;
#endif
x509_crt *ca_chain;
x509_crt *server_cert;
pk_context *server_key;
} thread_info_t;
typedef struct {
int active;
thread_info_t data;
pthread_t thread;
} pthread_info_t;
#define MAX_NUM_THREADS 5
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;
int client_fd = thread_info->client_fd;
int thread_id = (int) pthread_self();
unsigned char buf[1024];
char pers[50];
ssl_context ssl;
ctr_drbg_context ctr_drbg;
snprintf( pers, sizeof(pers), "SSL Pthread Thread %d", thread_id );
printf( " [ #%d ] Client FD %d\n", thread_id, client_fd );
printf( " [ #%d ] Seeding the random number generator...\n", thread_id );
/* entropy_func() is thread-safe if POLARSSL_THREADING_C is set
*/
if( ( ret = ctr_drbg_init( &ctr_drbg, entropy_func, thread_info->entropy,
(const unsigned char *) pers,
strlen( pers ) ) ) != 0 )
{
printf( " [ #%d ] failed: ctr_drbg_init returned -0x%04x\n",
thread_id, -ret );
goto thread_exit;
}
printf( " [ #%d ] ok\n", thread_id );
/*
* 4. Setup stuff
*/
printf( " [ #%d ] Setting up the SSL data....\n", thread_id );
if( ( ret = ssl_init( &ssl ) ) != 0 )
{
printf( " [ #%d ] failed: ssl_init returned -0x%04x\n",
thread_id, -ret );
goto thread_exit;
}
ssl_set_endpoint( &ssl, SSL_IS_SERVER );
ssl_set_authmode( &ssl, SSL_VERIFY_NONE );
ssl_set_rng( &ssl, ctr_drbg_random, &ctr_drbg );
ssl_set_dbg( &ssl, my_mutexed_debug, stdout );
/* ssl_cache_get() and ssl_cache_set() are thread-safe if
* POLARSSL_THREADING_C is set.
*/
#if defined(POLARSSL_SSL_CACHE_C)
ssl_set_session_cache( &ssl, ssl_cache_get, thread_info->cache,
ssl_cache_set, thread_info->cache );
#endif
ssl_set_ca_chain( &ssl, thread_info->ca_chain, NULL, NULL );
ssl_set_own_cert( &ssl, thread_info->server_cert, thread_info->server_key );
printf( " [ #%d ] ok\n", thread_id );
ssl_set_bio( &ssl, net_recv, &client_fd,
net_send, &client_fd );
printf( " [ #%d ] ok\n", thread_id );
/*
* 5. Handshake
*/
printf( " [ #%d ] Performing the SSL/TLS handshake\n", thread_id );
while( ( ret = ssl_handshake( &ssl ) ) != 0 )
{
if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE )
{
printf( " [ #%d ] failed: ssl_handshake returned -0x%04x\n",
thread_id, -ret );
goto thread_exit;
}
}
printf( " [ #%d ] ok\n", thread_id );
/*
* 6. Read the HTTP Request
*/
printf( " [ #%d ] < Read from client\n", thread_id );
do
{
len = sizeof( buf ) - 1;
memset( buf, 0, sizeof( buf ) );
ret = ssl_read( &ssl, buf, len );
if( ret == POLARSSL_ERR_NET_WANT_READ || ret == POLARSSL_ERR_NET_WANT_WRITE )
continue;
if( ret <= 0 )
{
switch( ret )
{
case POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY:
printf( " [ #%d ] connection was closed gracefully\n",
thread_id );
goto thread_exit;
case POLARSSL_ERR_NET_CONN_RESET:
printf( " [ #%d ] connection was reset by peer\n",
thread_id );
goto thread_exit;
default:
printf( " [ #%d ] ssl_read returned -0x%04x\n",
thread_id, -ret );
goto thread_exit;
}
break;
}
len = ret;
printf( " [ #%d ] %d bytes read\n=====\n%s\n=====\n",
thread_id, len, (char *) buf );
if( ret > 0 )
break;
}
while( 1 );
/*
* 7. Write the 200 Response
*/
printf( " [ #%d ] > Write to client:\n", thread_id );
len = sprintf( (char *) buf, HTTP_RESPONSE,
ssl_get_ciphersuite( &ssl ) );
while( ( ret = ssl_write( &ssl, buf, len ) ) <= 0 )
{
if( ret == POLARSSL_ERR_NET_CONN_RESET )
{
printf( " [ #%d ] failed: peer closed the connection\n",
thread_id );
goto thread_exit;
}
if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE )
{
printf( " [ #%d ] failed: ssl_write returned -0x%04x\n",
thread_id, ret );
goto thread_exit;
}
}
len = ret;
printf( " [ #%d ] %d bytes written\n=====\n%s\n=====\n",
thread_id, len, (char *) buf );
printf( " [ #%d ] . Closing the connection...", thread_id );
while( ( ret = ssl_close_notify( &ssl ) ) < 0 )
{
if( ret != POLARSSL_ERR_NET_WANT_READ &&
ret != POLARSSL_ERR_NET_WANT_WRITE )
{
printf( " [ #%d ] failed: ssl_close_notify returned -0x%04x\n",
thread_id, ret );
goto thread_exit;
}
}
printf( " ok\n" );
ret = 0;
thread_exit:
#ifdef POLARSSL_ERROR_C
if( ret != 0 )
{
char error_buf[100];
polarssl_strerror( ret, error_buf, 100 );
printf(" [ #%d ] Last error was: -0x%04x - %s\n\n",
thread_id, -ret, error_buf );
}
#endif
net_close( client_fd );
ssl_free( &ssl );
thread_info->thread_complete = 1;
return( NULL );
}
static int thread_create( int 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 )
{
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;
threads[i].data.client_fd = client_fd;
if( ( ret = pthread_create( &threads[i].thread, NULL, handle_ssl_connection, &threads[i].data ) ) != 0 )
{
return( ret );
}
return( 0 );
}
int main( int argc, char *argv[] )
{
int ret;
int listen_fd;
int client_fd = -1;
entropy_context entropy;
x509_crt srvcert;
pk_context pkey;
#if defined(POLARSSL_MEMORY_BUFFER_ALLOC_C)
unsigned char alloc_buf[100000];
#endif
#if defined(POLARSSL_SSL_CACHE_C)
ssl_cache_context cache;
#endif
((void) argc);
((void) argv);
#if defined(POLARSSL_MEMORY_BUFFER_ALLOC_C)
memory_buffer_alloc_init( alloc_buf, sizeof(alloc_buf) );
#endif
#if defined(POLARSSL_SSL_CACHE_C)
ssl_cache_init( &cache );
base_info.cache = &cache;
#endif
memset( threads, 0, sizeof(threads) );
polarssl_mutex_init( &debug_mutex );
/*
* We use only a single entropy source that is used in all the threads.
*/
entropy_init( &entropy );
base_info.entropy = &entropy;
/*
* 1. Load the certificates and private RSA key
*/
printf( "\n . Loading the server cert. and key..." );
fflush( stdout );
x509_crt_init( &srvcert );
/*
* This demonstration program uses embedded test certificates.
* Instead, you may want to use x509_crt_parse_file() to read the
* server and CA certificates, as well as pk_parse_keyfile().
*/
ret = x509_crt_parse( &srvcert, (const unsigned char *) test_srv_crt,
strlen( test_srv_crt ) );
if( ret != 0 )
{
printf( " failed\n ! x509_crt_parse returned %d\n\n", ret );
goto exit;
}
ret = x509_crt_parse( &srvcert, (const unsigned char *) test_ca_list,
strlen( test_ca_list ) );
if( ret != 0 )
{
printf( " failed\n ! x509_crt_parse returned %d\n\n", ret );
goto exit;
}
pk_init( &pkey );
ret = pk_parse_key( &pkey, (const unsigned char *) test_srv_key,
strlen( test_srv_key ), NULL, 0 );
if( ret != 0 )
{
printf( " failed\n ! pk_parse_key returned %d\n\n", ret );
goto exit;
}
base_info.ca_chain = srvcert.next;
base_info.server_cert = &srvcert;
base_info.server_key = &pkey;
printf( " ok\n" );
/*
* 2. Setup the listening TCP socket
*/
printf( " . Bind on https://localhost:4433/ ..." );
fflush( stdout );
if( ( ret = net_bind( &listen_fd, NULL, 4433 ) ) != 0 )
{
printf( " failed\n ! net_bind returned %d\n\n", ret );
goto exit;
}
printf( " ok\n" );
reset:
#ifdef POLARSSL_ERROR_C
if( ret != 0 )
{
char error_buf[100];
polarssl_strerror( ret, error_buf, 100 );
printf( " [ main ] Last error was: -0x%04x - %s\n", -ret, error_buf );
}
#endif
/*
* 3. Wait until a client connects
*/
client_fd = -1;
printf( " [ main ] Waiting for a remote connection\n" );
if( ( ret = net_accept( listen_fd, &client_fd, NULL ) ) != 0 )
{
printf( " [ main ] failed: net_accept returned -0x%04x\n", ret );
goto exit;
}
printf( " [ main ] ok\n" );
printf( " [ main ] Creating a new thread\n" );
if( ( ret = thread_create( client_fd ) ) != 0 )
{
printf( " [ main ] failed: thread_create returned %d\n", ret );
net_close( client_fd );
goto reset;
}
ret = 0;
goto reset;
exit:
x509_crt_free( &srvcert );
pk_free( &pkey );
#if defined(POLARSSL_SSL_CACHE_C)
ssl_cache_free( &cache );
#endif
entropy_free( &entropy );
polarssl_mutex_free( &debug_mutex );
#if defined(POLARSSL_MEMORY_BUFFER_ALLOC_C)
memory_buffer_alloc_free();
#endif
#if defined(_WIN32)
printf( " Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
#endif
return( ret );
}
#endif /* POLARSSL_BIGNUM_C && POLARSSL_CERTS_C && POLARSSL_ENTROPY_C &&
POLARSSL_SSL_TLS_C && POLARSSL_SSL_SRV_C && POLARSSL_NET_C &&
POLARSSL_RSA_C && POLARSSL_CTR_DRBG_C && POLARSSL_THREADING_C &&
POLARSSL_THREADING_PTHREAD */
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