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yojimbo.cpp
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yojimbo.cpp
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/*
Yojimbo Client/Server Network Library.
Copyright © 2016 - 2019, The Network Protocol Company, Inc.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "yojimbo.h"
#ifdef _MSC_VER
#define SODIUM_STATIC
#endif // #ifdef _MSC_VER
#include <sodium.h>
#if YOJIMBO_DEBUG_MEMORY_LEAKS
#include <map>
#endif // YOJIMBO_DEBUG_MEMORY_LEAKS
static yojimbo::Allocator * g_defaultAllocator = NULL;
namespace yojimbo
{
Allocator & GetDefaultAllocator()
{
yojimbo_assert( g_defaultAllocator );
return *g_defaultAllocator;
}
}
extern "C" int netcode_init();
extern "C" int reliable_init();
extern "C" void netcode_term();
extern "C" void reliable_term();
#define NETCODE_OK 1
#define RELIABLE_OK 1
bool InitializeYojimbo()
{
g_defaultAllocator = new yojimbo::DefaultAllocator();
if ( netcode_init() != NETCODE_OK )
return false;
if ( reliable_init() != RELIABLE_OK )
return false;
return sodium_init() != -1;
}
void ShutdownYojimbo()
{
reliable_term();
netcode_term();
yojimbo_assert( g_defaultAllocator );
delete g_defaultAllocator;
g_defaultAllocator = NULL;
}
// ---------------------------------------------------------------------------------
#ifdef _MSC_VER
#include <malloc.h>
#endif // #ifdef _MSC_VER
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stdio.h>
#if YOJIMBO_WITH_MBEDTLS
#include <mbedtls/base64.h>
#endif // #if YOJIMBO_WITH_MBEDTLS
extern "C" void netcode_random_bytes( uint8_t*, int );
namespace yojimbo
{
void random_bytes( uint8_t * data, int bytes )
{
netcode_random_bytes( data, bytes );
}
void print_bytes( const char * label, const uint8_t * data, int data_bytes )
{
printf( "%s: ", label );
for ( int i = 0; i < data_bytes; ++i )
{
printf( "0x%02x,", (int) data[i] );
}
printf( " (%d bytes)\n", data_bytes );
}
#if YOJIMBO_WITH_MBEDTLS
int base64_encode_string( const char * input, char * output, int output_size )
{
yojimbo_assert( input );
yojimbo_assert( output );
yojimbo_assert( output_size > 0 );
size_t output_length = 0;
const int input_length = (int) ( strlen( input ) + 1 );
int result = mbedtls_base64_encode( (unsigned char*) output, output_size, &output_length, (unsigned char*) input, input_length );
return ( result == 0 ) ? (int) output_length + 1 : -1;
}
int base64_decode_string( const char * input, char * output, int output_size )
{
yojimbo_assert( input );
yojimbo_assert( output );
yojimbo_assert( output_size > 0 );
size_t output_length = 0;
int result = mbedtls_base64_decode( (unsigned char*) output, output_size, &output_length, (const unsigned char*) input, strlen( input ) );
if ( result != 0 || output[output_length-1] != '\0' )
{
output[0] = '\0';
return -1;
}
return (int) output_length;
}
int base64_encode_data( const uint8_t * input, int input_length, char * output, int output_size )
{
yojimbo_assert( input );
yojimbo_assert( output );
yojimbo_assert( output_size > 0 );
size_t output_length = 0;
int result = mbedtls_base64_encode( (unsigned char*) output, output_size, &output_length, (unsigned char*) input, input_length );
return ( result == 0 ) ? (int) output_length : -1;
}
int base64_decode_data( const char * input, uint8_t * output, int output_size )
{
yojimbo_assert( input );
yojimbo_assert( output );
yojimbo_assert( output_size > 0 );
size_t output_length = 0;
int result = mbedtls_base64_decode( (unsigned char*) output, output_size, &output_length, (const unsigned char*) input, strlen( input ) );
return ( result == 0 ) ? (int) output_length : -1;
}
#endif // #if YOJIMBO_WITH_MBEDTLS
}
// ---------------------------------------------------------------------------------
#if YOJIMBO_DEBUG_MEMORY_LEAKS
#include <stdio.h>
#endif // #if YOJIMBO_DEBUG_MEMORY_LEAKS
#include "tlsf/tlsf.h"
namespace yojimbo
{
Allocator::Allocator()
{
m_errorLevel = ALLOCATOR_ERROR_NONE;
}
Allocator::~Allocator()
{
#if YOJIMBO_DEBUG_MEMORY_LEAKS
if ( m_alloc_map.size() )
{
printf( "you leaked memory!\n\n" );
typedef std::map<void*,AllocatorEntry>::iterator itor_type;
for ( itor_type i = m_alloc_map.begin(); i != m_alloc_map.end(); ++i )
{
void * p = i->first;
AllocatorEntry entry = i->second;
printf( "leaked block %p (%d bytes) - %s:%d\n", p, (int) entry.size, entry.file, entry.line );
}
printf( "\n" );
exit(1);
}
#endif // #if YOJIMBO_DEBUG_MEMORY_LEAKS
}
void Allocator::SetErrorLevel( AllocatorErrorLevel errorLevel )
{
if ( m_errorLevel == ALLOCATOR_ERROR_NONE && errorLevel != ALLOCATOR_ERROR_NONE )
{
yojimbo_printf( YOJIMBO_LOG_LEVEL_ERROR, "allocator went into error state: %s\n", GetAllocatorErrorString( errorLevel ) );
}
m_errorLevel = errorLevel;
}
void Allocator::TrackAlloc( void * p, size_t size, const char * file, int line )
{
#if YOJIMBO_DEBUG_MEMORY_LEAKS
yojimbo_assert( m_alloc_map.find( p ) == m_alloc_map.end() );
AllocatorEntry entry;
entry.size = size;
entry.file = file;
entry.line = line;
m_alloc_map[p] = entry;
#else // #if YOJIMBO_DEBUG_MEMORY_LEAKS
(void) p;
(void) size;
(void) file;
(void) line;
#endif // #if YOJIMBO_DEBUG_MEMORY_LEAKS
}
void Allocator::TrackFree( void * p, const char * file, int line )
{
(void) p;
(void) file;
(void) line;
#if YOJIMBO_DEBUG_MEMORY_LEAKS
yojimbo_assert( m_alloc_map.find( p ) != m_alloc_map.end() );
m_alloc_map.erase( p );
#endif // #if YOJIMBO_DEBUG_MEMORY_LEAKS
}
// =============================================
void * DefaultAllocator::Allocate( size_t size, const char * file, int line )
{
void * p = malloc( size );
if ( !p )
{
SetErrorLevel( ALLOCATOR_ERROR_OUT_OF_MEMORY );
return NULL;
}
TrackAlloc( p, size, file, line );
return p;
}
void DefaultAllocator::Free( void * p, const char * file, int line )
{
if ( !p )
return;
TrackFree( p, file, line );
free( p );
}
// =============================================
static void * AlignPointerUp( void * memory, int align )
{
yojimbo_assert( ( align & ( align - 1 ) ) == 0 );
uintptr_t p = (uintptr_t) memory;
return (void*) ( ( p + ( align - 1 ) ) & ~( align - 1 ) );
}
static void * AlignPointerDown( void * memory, int align )
{
yojimbo_assert( ( align & ( align - 1 ) ) == 0 );
uintptr_t p = (uintptr_t) memory;
return (void*) ( p - ( p & ( align - 1 ) ) );
}
TLSF_Allocator::TLSF_Allocator( void * memory, size_t size )
{
yojimbo_assert( size > 0 );
SetErrorLevel( ALLOCATOR_ERROR_NONE );
const int AlignBytes = 8;
uint8_t * aligned_memory_start = (uint8_t*) AlignPointerUp( memory, AlignBytes );
uint8_t * aligned_memory_finish = (uint8_t*) AlignPointerDown( ( (uint8_t*) memory ) + size, AlignBytes );
yojimbo_assert( aligned_memory_start < aligned_memory_finish );
size_t aligned_memory_size = aligned_memory_finish - aligned_memory_start;
m_tlsf = tlsf_create_with_pool( aligned_memory_start, aligned_memory_size );
}
TLSF_Allocator::~TLSF_Allocator()
{
tlsf_destroy( m_tlsf );
}
void * TLSF_Allocator::Allocate( size_t size, const char * file, int line )
{
void * p = tlsf_malloc( m_tlsf, size );
if ( !p )
{
SetErrorLevel( ALLOCATOR_ERROR_OUT_OF_MEMORY );
return NULL;
}
TrackAlloc( p, size, file, line );
return p;
}
void TLSF_Allocator::Free( void * p, const char * file, int line )
{
if ( !p )
return;
TrackFree( p, file, line );
tlsf_free( m_tlsf, p );
}
}
// ---------------------------------------------------------------------------------
#if YOJIMBO_PLATFORM == YOJIMBO_PLATFORM_WINDOWS
#define NOMINMAX
#define _WINSOCK_DEPRECATED_NO_WARNINGS
#include <winsock2.h>
#include <ws2tcpip.h>
#include <ws2ipdef.h>
#pragma comment( lib, "WS2_32.lib" )
#ifdef SetPort
#undef SetPort
#endif // #ifdef SetPort
#elif YOJIMBO_PLATFORM == YOJIMBO_PLATFORM_MAC || YOJIMBO_PLATFORM == YOJIMBO_PLATFORM_UNIX
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <net/if.h>
#include <fcntl.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <errno.h>
#else
#error yojimbo unknown platform!
#endif
#include <memory.h>
#include <string.h>
namespace yojimbo
{
Address::Address()
{
Clear();
}
Address::Address( uint8_t a, uint8_t b, uint8_t c, uint8_t d, uint16_t port )
: m_type( ADDRESS_IPV4 )
{
m_address.ipv4[0] = a;
m_address.ipv4[1] = b;
m_address.ipv4[2] = c;
m_address.ipv4[3] = d;
m_port = port;
}
Address::Address( const uint8_t address[], uint16_t port )
: m_type( ADDRESS_IPV4 )
{
for ( int i = 0; i < 4; ++i )
m_address.ipv4[i] = address[i];
m_port = port;
}
Address::Address( uint16_t a, uint16_t b, uint16_t c, uint16_t d, uint16_t e, uint16_t f, uint16_t g, uint16_t h, uint16_t port )
: m_type( ADDRESS_IPV6 )
{
m_address.ipv6[0] = a;
m_address.ipv6[1] = b;
m_address.ipv6[2] = c;
m_address.ipv6[3] = d;
m_address.ipv6[4] = e;
m_address.ipv6[5] = f;
m_address.ipv6[6] = g;
m_address.ipv6[7] = h;
m_port = port;
}
Address::Address( const uint16_t address[], uint16_t port )
: m_type( ADDRESS_IPV6 )
{
for ( int i = 0; i < 8; ++i )
m_address.ipv6[i] = address[i];
m_port = port;
}
Address::Address( const char * address )
{
Parse( address );
}
Address::Address( const char * address, uint16_t port )
{
Parse( address );
m_port = port;
}
void Address::Parse( const char * address_in )
{
// first try to parse as an IPv6 address:
// 1. if the first character is '[' then it's probably an ipv6 in form "[addr6]:portnum"
// 2. otherwise try to parse as raw IPv6 address, parse using inet_pton
yojimbo_assert( address_in );
char buffer[MaxAddressLength];
char * address = buffer;
strncpy( address, address_in, MaxAddressLength - 1 );
address[MaxAddressLength-1] = '\0';
int addressLength = (int) strlen( address );
m_port = 0;
if ( address[0] == '[' )
{
const int base_index = addressLength - 1;
for ( int i = 0; i < 6; ++i ) // note: no need to search past 6 characters as ":65535" is longest port value
{
const int index = base_index - i;
if ( index < 3 )
break;
if ( address[index] == ':' )
{
m_port = uint16_t( atoi( &address[index + 1] ) );
address[index-1] = '\0';
}
}
address += 1;
}
struct in6_addr sockaddr6;
if ( inet_pton( AF_INET6, address, &sockaddr6 ) == 1 )
{
int i;
for ( i = 0; i < 8; ++i )
{
m_address.ipv6[i] = ntohs( ( (uint16_t*) &sockaddr6 ) [i] );
}
m_type = ADDRESS_IPV6;
return;
}
// otherwise it's probably an IPv4 address:
// 1. look for ":portnum", if found save the portnum and strip it out
// 2. parse remaining ipv4 address via inet_pton
addressLength = (int) strlen( address );
const int base_index = addressLength - 1;
for ( int i = 0; i < 6; ++i )
{
const int index = base_index - i;
if ( index < 0 )
break;
if ( address[index] == ':' )
{
m_port = (uint16_t) atoi( &address[index+1] );
address[index] = '\0';
}
}
struct sockaddr_in sockaddr4;
if ( inet_pton( AF_INET, address, &sockaddr4.sin_addr ) == 1 )
{
m_type = ADDRESS_IPV4;
m_address.ipv4[3] = (uint8_t) ( ( sockaddr4.sin_addr.s_addr & 0xFF000000 ) >> 24 );
m_address.ipv4[2] = (uint8_t) ( ( sockaddr4.sin_addr.s_addr & 0x00FF0000 ) >> 16 );
m_address.ipv4[1] = (uint8_t) ( ( sockaddr4.sin_addr.s_addr & 0x0000FF00 ) >> 8 );
m_address.ipv4[0] = (uint8_t) ( ( sockaddr4.sin_addr.s_addr & 0x000000FF ) );
}
else
{
// Not a valid IPv4 address. Set address as invalid.
Clear();
}
}
void Address::Clear()
{
m_type = ADDRESS_NONE;
memset( &m_address, 0, sizeof( m_address ) );
m_port = 0;
}
const uint8_t * Address::GetAddress4() const
{
yojimbo_assert( m_type == ADDRESS_IPV4 );
return m_address.ipv4;
}
const uint16_t * Address::GetAddress6() const
{
yojimbo_assert( m_type == ADDRESS_IPV6 );
return m_address.ipv6;
}
void Address::SetPort( uint16_t port )
{
m_port = port;
}
uint16_t Address::GetPort() const
{
return m_port;
}
AddressType Address::GetType() const
{
return m_type;
}
const char * Address::ToString( char buffer[], int bufferSize ) const
{
yojimbo_assert( bufferSize >= MaxAddressLength );
if ( m_type == ADDRESS_IPV4 )
{
const uint8_t a = m_address.ipv4[0];
const uint8_t b = m_address.ipv4[1];
const uint8_t c = m_address.ipv4[2];
const uint8_t d = m_address.ipv4[3];
if ( m_port != 0 )
snprintf( buffer, bufferSize, "%d.%d.%d.%d:%d", a, b, c, d, m_port );
else
snprintf( buffer, bufferSize, "%d.%d.%d.%d", a, b, c, d );
return buffer;
}
else if ( m_type == ADDRESS_IPV6 )
{
if ( m_port == 0 )
{
uint16_t address6[8];
for ( int i = 0; i < 8; ++i )
address6[i] = ntohs( ((uint16_t*) &m_address.ipv6)[i] );
inet_ntop( AF_INET6, address6, buffer, bufferSize );
return buffer;
}
else
{
char addressString[INET6_ADDRSTRLEN];
uint16_t address6[8];
for ( int i = 0; i < 8; ++i )
address6[i] = ntohs( ((uint16_t*) &m_address.ipv6)[i] );
inet_ntop( AF_INET6, address6, addressString, INET6_ADDRSTRLEN );
snprintf( buffer, bufferSize, "[%s]:%d", addressString, m_port );
return buffer;
}
}
else
{
snprintf( buffer, bufferSize, "%s", "NONE" );
return buffer;
}
}
bool Address::IsValid() const
{
return m_type != ADDRESS_NONE;
}
bool Address::IsLinkLocal() const
{
return m_type == ADDRESS_IPV6 && m_address.ipv6[0] == 0xfe80;
}
bool Address::IsSiteLocal() const
{
return m_type == ADDRESS_IPV6 && m_address.ipv6[0] == 0xfec0;
}
bool Address::IsMulticast() const
{
return m_type == ADDRESS_IPV6 && m_address.ipv6[0] == 0xff00;
}
bool Address::IsLoopback() const
{
return ( m_type == ADDRESS_IPV4 && m_address.ipv4[0] == 127
&& m_address.ipv4[1] == 0
&& m_address.ipv4[2] == 0
&& m_address.ipv4[3] == 1 )
||
( m_type == ADDRESS_IPV6 && m_address.ipv6[0] == 0
&& m_address.ipv6[1] == 0
&& m_address.ipv6[2] == 0
&& m_address.ipv6[3] == 0
&& m_address.ipv6[4] == 0
&& m_address.ipv6[5] == 0
&& m_address.ipv6[6] == 0
&& m_address.ipv6[7] == 0x0001 );
}
bool Address::IsGlobalUnicast() const
{
return m_type == ADDRESS_IPV6 && m_address.ipv6[0] != 0xfe80
&& m_address.ipv6[0] != 0xfec0
&& m_address.ipv6[0] != 0xff00
&& !IsLoopback();
}
bool Address::operator ==( const Address & other ) const
{
if ( m_type != other.m_type )
return false;
if ( m_port != other.m_port )
return false;
if ( m_type == ADDRESS_IPV4 && m_address.ipv4 == other.m_address.ipv4 )
return true;
else if ( m_type == ADDRESS_IPV6 && memcmp( m_address.ipv6, other.m_address.ipv6, sizeof( m_address.ipv6 ) ) == 0 )
return true;
else
return false;
}
bool Address::operator !=( const Address & other ) const
{
return !( *this == other );
}
}
// ---------------------------------------------------------------------------------
#include "yojimbo.h"
#include "netcode.h"
#include "reliable.h"
#include <stdarg.h>
#include <stdio.h>
static void default_assert_handler( const char * condition, const char * function, const char * file, int line )
{
printf( "assert failed: ( %s ), function %s, file %s, line %d\n", condition, function, file, line );
#if defined( __GNUC__ )
__builtin_trap();
#elif defined( _MSC_VER )
__debugbreak();
#endif
}
static int log_level = 0;
static int (*printf_function)( const char *, ... ) = printf;
void (*yojimbo_assert_function)( const char *, const char *, const char * file, int line ) = default_assert_handler;
void yojimbo_log_level( int level )
{
log_level = level;
netcode_log_level( level );
reliable_log_level( level );
}
void yojimbo_set_printf_function( int (*function)( const char *, ... ) )
{
yojimbo_assert( function );
printf_function = function;
netcode_set_printf_function( function );
reliable_set_printf_function( function );
}
void yojimbo_set_assert_function( void (*function)( const char *, const char *, const char * file, int line ) )
{
yojimbo_assert_function = function;
netcode_set_assert_function( function );
reliable_set_assert_function( function );
}
#if YOJIMBO_ENABLE_LOGGING
void yojimbo_printf( int level, const char * format, ... )
{
if ( level > log_level )
return;
va_list args;
va_start( args, format );
char buffer[4*1024];
vsprintf( buffer, format, args );
printf_function( "%s", buffer );
va_end( args );
}
#else // #if YOJIMBO_ENABLE_LOGGING
void yojimbo_printf( int level, const char * format, ... )
{
(void) level;
(void) format;
}
#endif // #if YOJIMBO_ENABLE_LOGGING
#if __APPLE__
// ===============================
// MacOS
// ===============================
#include <unistd.h>
#include <mach/mach.h>
#include <mach/mach_time.h>
void yojimbo_sleep( double time )
{
usleep( (int) ( time * 1000000 ) );
}
double yojimbo_time()
{
static uint64_t start = 0;
static mach_timebase_info_data_t timebase_info;
if ( start == 0 )
{
mach_timebase_info( &timebase_info );
start = mach_absolute_time();
return 0.0;
}
uint64_t current = mach_absolute_time();
if ( current < start )
current = start;
return ( double( current - start ) * double( timebase_info.numer ) / double( timebase_info.denom ) ) / 1000000000.0;
}
#elif __linux
// ===============================
// Linux
// ===============================
#include <unistd.h>
#include <time.h>
void yojimbo_sleep( double time )
{
usleep( (int) ( time * 1000000 ) );
}
double yojimbo_time()
{
static double start = -1;
if ( start == -1 )
{
timespec ts;
clock_gettime( CLOCK_MONOTONIC_RAW, &ts );
start = ts.tv_sec + double( ts.tv_nsec ) / 1000000000.0;
return 0.0;
}
timespec ts;
clock_gettime( CLOCK_MONOTONIC_RAW, &ts );
double current = ts.tv_sec + double( ts.tv_nsec ) / 1000000000.0;
if ( current < start )
current = start;
return current - start;
}
#elif defined(_WIN32)
// ===============================
// Wandows
// ===============================
#define NOMINMAX
#include <windows.h>
void yojimbo_sleep( double time )
{
const int milliseconds = time * 1000;
Sleep( milliseconds );
}
static bool timer_initialized = false;
static LARGE_INTEGER timer_frequency;
static LARGE_INTEGER timer_start;
double yojimbo_time()
{
if ( !timer_initialized )
{
QueryPerformanceFrequency( &timer_frequency );
QueryPerformanceCounter( &timer_start );
timer_initialized = true;
}
LARGE_INTEGER now;
QueryPerformanceCounter( &now );
if ( now.QuadPart < timer_start.QuadPart )
now.QuadPart = timer_start.QuadPart;
return double( now.QuadPart - timer_start.QuadPart ) / double( timer_frequency.QuadPart );
}
#else
#error unsupported platform!
#endif
// ---------------------------------------------------------------------------------
#if YOJIMBO_WITH_MBEDTLS
#include <mbedtls/config.h>
#include <mbedtls/platform.h>
#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>
#endif // #if YOJIMBO_WITH_MBEDTLS
#include <inttypes.h>
#include <string.h>
#include "netcode.h"
namespace yojimbo
{
struct MatcherInternal
{
#if YOJIMBO_WITH_MBEDTLS
mbedtls_net_context server_fd;
mbedtls_entropy_context entropy;
mbedtls_ctr_drbg_context ctr_drbg;
mbedtls_ssl_context ssl;
mbedtls_ssl_config conf;
mbedtls_x509_crt cacert;
#endif // #if YOJIMBO_WITH_MBEDTLS
};
Matcher::Matcher( Allocator & allocator )
{
#if YOJIMBO_WITH_MBEDTLS
yojimbo_assert( ConnectTokenBytes == NETCODE_CONNECT_TOKEN_BYTES );
m_allocator = &allocator;
m_initialized = false;
m_matchStatus = MATCH_IDLE;
m_internal = YOJIMBO_NEW( allocator, MatcherInternal );
memset( m_connectToken, 0, sizeof( m_connectToken ) );
#else // #if YOJIMBO_WITH_MBEDTLS
(void) allocator;
#endif // #if YOJIMBO_WITH_MBEDTLS
}
Matcher::~Matcher()
{
#if YOJIMBO_WITH_MBEDTLS
mbedtls_net_free( &m_internal->server_fd );
mbedtls_x509_crt_free( &m_internal->cacert );
mbedtls_ssl_free( &m_internal->ssl );
mbedtls_ssl_config_free( &m_internal->conf );
mbedtls_ctr_drbg_free( &m_internal->ctr_drbg );
mbedtls_entropy_free( &m_internal->entropy );
YOJIMBO_DELETE( *m_allocator, MatcherInternal, m_internal );
#endif // #if YOJIMBO_WITH_MBEDTLS
}
bool Matcher::Initialize()
{
#if YOJIMBO_WITH_MBEDTLS
const char * pers = "yojimbo_client";
mbedtls_net_init( &m_internal->server_fd );
mbedtls_ssl_init( &m_internal->ssl );
mbedtls_ssl_config_init( &m_internal->conf );
mbedtls_x509_crt_init( &m_internal->cacert );
mbedtls_ctr_drbg_init( &m_internal->ctr_drbg );
mbedtls_entropy_init( &m_internal->entropy );
int result;
if ( ( result = mbedtls_ctr_drbg_seed( &m_internal->ctr_drbg, mbedtls_entropy_func, &m_internal->entropy, (const unsigned char *) pers, strlen( pers ) ) ) != 0 )
{
yojimbo_printf( YOJIMBO_LOG_LEVEL_ERROR, "error: mbedtls_ctr_drbg_seed failed (%d)\n", result );
return false;
}
if ( mbedtls_x509_crt_parse( &m_internal->cacert, (const unsigned char *) mbedtls_test_cas_pem, mbedtls_test_cas_pem_len ) < 0 )
{
yojimbo_printf( YOJIMBO_LOG_LEVEL_ERROR, "error: mbedtls_x509_crt_parse failed (%d)\n", result );
return false;
}
memset( m_connectToken, 0, sizeof( m_connectToken ) );
#endif // // #if YOJIMBO_WITH_MBEDTLS
m_initialized = true;
return true;
}
void Matcher::RequestMatch( uint64_t protocolId, uint64_t clientId, bool verifyCertificate, const char* serverName, const char* serverPort )
{
#if YOJIMBO_WITH_MBEDTLS
yojimbo_assert( m_initialized );
const char * data;
char request[1024];
int bytesRead = 0;
int result;
if ( ( result = mbedtls_net_connect( &m_internal->server_fd, serverName, serverPort, MBEDTLS_NET_PROTO_TCP ) ) != 0 )
{
yojimbo_printf( YOJIMBO_LOG_LEVEL_ERROR, "error: mbedtls_net_connect failed (%d)\n", result );
m_matchStatus = MATCH_FAILED;
goto cleanup;
}
if ( ( result = mbedtls_ssl_config_defaults( &m_internal->conf,
MBEDTLS_SSL_IS_CLIENT,
MBEDTLS_SSL_TRANSPORT_STREAM,
MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
{
yojimbo_printf( YOJIMBO_LOG_LEVEL_ERROR, "error: mbedtls_net_connect failed (%d)\n", result );
m_matchStatus = MATCH_FAILED;
goto cleanup;
}
mbedtls_ssl_conf_authmode( &m_internal->conf, verifyCertificate ? MBEDTLS_SSL_VERIFY_REQUIRED : MBEDTLS_SSL_VERIFY_OPTIONAL );
mbedtls_ssl_conf_ca_chain( &m_internal->conf, &m_internal->cacert, NULL );
mbedtls_ssl_conf_rng( &m_internal->conf, mbedtls_ctr_drbg_random, &m_internal->ctr_drbg );
if ( ( result = mbedtls_ssl_setup( &m_internal->ssl, &m_internal->conf ) ) != 0 )
{
yojimbo_printf( YOJIMBO_LOG_LEVEL_ERROR, "error: mbedtls_ssl_setup failed (%d)\n", result );
m_matchStatus = MATCH_FAILED;
goto cleanup;
}
if ( ( result = mbedtls_ssl_set_hostname( &m_internal->ssl, "yojimbo" ) ) != 0 )
{
yojimbo_printf( YOJIMBO_LOG_LEVEL_ERROR, "error: mbedtls_ssl_set_hostname failed (%d)\n", result );
m_matchStatus = MATCH_FAILED;
goto cleanup;
}
mbedtls_ssl_set_bio( &m_internal->ssl, &m_internal->server_fd, mbedtls_net_send, mbedtls_net_recv, NULL );
while ( ( result = mbedtls_ssl_handshake( &m_internal->ssl ) ) != 0 )
{
if ( result != MBEDTLS_ERR_SSL_WANT_READ && result != MBEDTLS_ERR_SSL_WANT_WRITE )
{
yojimbo_printf( YOJIMBO_LOG_LEVEL_ERROR, "error: mbedtls_ssl_handshake failed (%d)\n", result );
m_matchStatus = MATCH_FAILED;
goto cleanup;
}
}
if ( verifyCertificate )
{
uint32_t flags;
if ( ( flags = mbedtls_ssl_get_verify_result( &m_internal->ssl ) ) != 0 )
{
// IMPORTANT: certificate verification failed!
yojimbo_printf( YOJIMBO_LOG_LEVEL_ERROR, "error: mbedtls_ssl_get_verify_result failed - flags = %x\n", flags );