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// --------------------------------------------------------------------------
//
// File
// Name: TLSContext.h
// Purpose: TLS (SSL) context for connections
// Created: 2003/08/06
//
// --------------------------------------------------------------------------
#include "Box.h"
#define TLS_CLASS_IMPLEMENTATION_CPP
#include <openssl/ssl.h>
#include "TLSContext.h"
#include "ServerException.h"
#include "SSLLib.h"
#include "TLSContext.h"
#include "MemLeakFindOn.h"
#define MAX_VERIFICATION_DEPTH 2
#define CIPHER_LIST "ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH"
// --------------------------------------------------------------------------
//
// Function
// Name: TLSContext::TLSContext()
// Purpose: Constructor
// Created: 2003/08/06
//
// --------------------------------------------------------------------------
TLSContext::TLSContext()
: mpContext(0)
{
}
// --------------------------------------------------------------------------
//
// Function
// Name: TLSContext::~TLSContext()
// Purpose: Destructor
// Created: 2003/08/06
//
// --------------------------------------------------------------------------
TLSContext::~TLSContext()
{
if(mpContext != 0)
{
::SSL_CTX_free(mpContext);
}
}
// --------------------------------------------------------------------------
//
// Function
// Name: TLSContext::Initialise(bool, const char *, const char *, const char *)
// Purpose: Initialise the context, loading in the specified certificate and private key files
// Created: 2003/08/06
//
// --------------------------------------------------------------------------
void TLSContext::Initialise(bool AsServer, const char *CertificatesFile, const char *PrivateKeyFile, const char *TrustedCAsFile)
{
if(mpContext != 0)
{
::SSL_CTX_free(mpContext);
}
mpContext = ::SSL_CTX_new(AsServer?TLSv1_server_method():TLSv1_client_method());
if(mpContext == NULL)
{
THROW_EXCEPTION(ServerException, TLSAllocationFailed)
}
// Setup our identity
if(::SSL_CTX_use_certificate_chain_file(mpContext, CertificatesFile) != 1)
{
std::string msg = "loading certificates from ";
msg += CertificatesFile;
SSLLib::LogError(msg);
THROW_EXCEPTION(ServerException, TLSLoadCertificatesFailed)
}
if(::SSL_CTX_use_PrivateKey_file(mpContext, PrivateKeyFile, SSL_FILETYPE_PEM) != 1)
{
std::string msg = "loading private key from ";
msg += PrivateKeyFile;
SSLLib::LogError(msg);
THROW_EXCEPTION(ServerException, TLSLoadPrivateKeyFailed)
}
// Setup the identify of CAs we trust
if(::SSL_CTX_load_verify_locations(mpContext, TrustedCAsFile, NULL) != 1)
{
std::string msg = "loading CA cert from ";
msg += TrustedCAsFile;
SSLLib::LogError(msg);
THROW_EXCEPTION(ServerException, TLSLoadTrustedCAsFailed)
}
// Setup options to require these certificates
::SSL_CTX_set_verify(mpContext, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, NULL);
// and a sensible maximum depth
::SSL_CTX_set_verify_depth(mpContext, MAX_VERIFICATION_DEPTH);
// Setup allowed ciphers
if(::SSL_CTX_set_cipher_list(mpContext, CIPHER_LIST) != 1)
{
SSLLib::LogError("setting cipher list to " CIPHER_LIST);
THROW_EXCEPTION(ServerException, TLSSetCiphersFailed)
}
}
// --------------------------------------------------------------------------
//
// Function
// Name: TLSContext::GetRawContext()
// Purpose: Get the raw context for OpenSSL API
// Created: 2003/08/06
//
// --------------------------------------------------------------------------
SSL_CTX *TLSContext::GetRawContext() const
{
if(mpContext == 0)
{
THROW_EXCEPTION(ServerException, TLSContextNotInitialised)
}
return mpContext;
}
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