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// **********************************************************************
//
// Copyright (c) 2003-2006 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <PluginI.h>
#include <Instance.h>
#include <Util.h>
#include <Ice/BuiltinSequences.h>
#include <Ice/Communicator.h>
#include <Ice/LocalException.h>
#include <Ice/Logger.h>
#include <Ice/Properties.h>
#include <IceUtil/StaticMutex.h>
#include <openssl/crypto.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/rand.h>
#include <openssl/ssl.h>
using namespace std;
using namespace Ice;
using namespace IceSSL;
#ifndef ICE_SSL_API
# ifdef ICE_SSL_API_EXPORTS
# define ICE_SSL_API ICE_DECLSPEC_EXPORT
# else
# define ICE_SSL_API ICE_DECLSPEC_IMPORT
# endif
#endif
//
// Plugin factory function.
//
extern "C"
{
ICE_SSL_API Ice::Plugin*
create(const CommunicatorPtr& communicator, const string& name, const StringSeq& args)
{
PluginI* plugin = new PluginI(communicator);
return plugin;
}
}
static IceUtil::StaticMutex staticMutex = ICE_STATIC_MUTEX_INITIALIZER;
static int instanceCount = 0;
static IceUtil::Mutex* locks = 0;
//
// OpenSSL mutex callback.
//
static void opensslLockCallback(int mode, int n, const char* file, int line)
{
if(mode & CRYPTO_LOCK)
{
locks[n].lock();
}
else
{
locks[n].unlock();
}
}
//
// OpenSSL thread id callback.
//
static unsigned long
opensslThreadIdCallback()
{
#if defined(_WIN32)
return static_cast<unsigned long>(GetCurrentThreadId());
#elif defined(__FreeBSD__) || defined(__APPLE__) || defined(__osf1__)
//
// On some platforms, pthread_t is a pointer to a per-thread structure.
//
return reinterpret_cast<unsigned long>(pthread_self());
#elif (defined(__linux) || defined(__sun) || defined(__hpux)) || defined(_AIX)
//
// On Linux, Solaris, HP-UX and AIX, pthread_t is an integer.
//
return static_cast<unsigned long>(pthread_self());
#else
# error "Unknown platform"
#endif
}
//
// VerifyInfo constructor.
//
IceSSL::VerifyInfo::VerifyInfo() :
incoming(false),
cert(0),
ssl(0)
{
}
//
// Plugin implementation.
//
IceSSL::PluginI::PluginI(const Ice::CommunicatorPtr& communicator)
{
setupSSL(communicator);
_instance = new Instance(communicator);
}
void
IceSSL::PluginI::destroy()
{
_instance->destroy();
_instance = 0;
cleanupSSL();
}
void
IceSSL::PluginI::initialize(SSL_CTX* clientContext, SSL_CTX* serverContext)
{
_instance->initialize(clientContext, serverContext);
}
void
IceSSL::PluginI::setCertificateVerifier(const CertificateVerifierPtr& verifier)
{
_instance->setCertificateVerifier(verifier);
}
void
IceSSL::PluginI::setPasswordPrompt(const PasswordPromptPtr& prompt)
{
_instance->setPasswordPrompt(prompt);
}
SSL_CTX*
IceSSL::PluginI::clientContext()
{
return _instance->clientContext()->ctx();
}
SSL_CTX*
IceSSL::PluginI::serverContext()
{
return _instance->serverContext()->ctx();
}
void
IceSSL::PluginI::setupSSL(const CommunicatorPtr& communicator)
{
//
// Initialize OpenSSL.
//
IceUtil::StaticMutex::Lock sync(staticMutex);
instanceCount++;
if(instanceCount == 1)
{
PropertiesPtr properties = communicator->getProperties();
//
// Create the mutexes and set the callbacks.
//
locks = new IceUtil::Mutex[CRYPTO_num_locks()];
CRYPTO_set_locking_callback(opensslLockCallback);
CRYPTO_set_id_callback(opensslThreadIdCallback);
//
// Load human-readable error messages.
//
SSL_load_error_strings();
//
// Initialize the SSL library.
//
SSL_library_init();
//
// Initialize the PRNG.
//
#ifdef WINDOWS
RAND_screen(); // Uses data from the screen if possible.
#endif
char randFile[1024];
if(RAND_file_name(randFile, sizeof(randFile))) // Gets the name of a default seed file.
{
RAND_load_file(randFile, 1024);
}
string randFiles = properties->getProperty("IceSSL.Random");
if(!randFiles.empty())
{
vector<string> files;
#ifdef _WIN32
const string sep = ";";
#else
const string sep = ":";
#endif
if(!splitString(randFiles, sep, false, files))
{
PluginInitializationException ex(__FILE__, __LINE__);
ex.reason = "IceSSL: invalid value for IceSSL.Random:\n" + randFiles;
throw ex;
}
for(vector<string>::iterator p = files.begin(); p != files.end(); ++p)
{
if(!RAND_load_file(p->c_str(), 1024))
{
PluginInitializationException ex(__FILE__, __LINE__);
ex.reason = "IceSSL: unable to load entropy data from " + *p;
throw ex;
}
}
}
#ifndef _WIN32
//
// The Entropy Gathering Daemon (EGD) is not available on Windows.
// The file should be a Unix domain socket for the daemon.
//
string entropyDaemon = properties->getProperty("IceSSL.EntropyDaemon");
if(!entropyDaemon.empty())
{
if(RAND_egd(entropyDaemon.c_str()) <= 0)
{
PluginInitializationException ex(__FILE__, __LINE__);
ex.reason = "IceSSL: EGD failure using file " + entropyDaemon;
throw ex;
}
}
#endif
if(!RAND_status())
{
communicator->getLogger()->warning("IceSSL: insufficient data to initialize PRNG");
}
}
}
void
IceSSL::PluginI::cleanupSSL()
{
IceUtil::StaticMutex::Lock sync(staticMutex);
if(--instanceCount == 0)
{
CRYPTO_set_locking_callback(0);
CRYPTO_set_id_callback(0);
delete[] locks;
locks = 0;
CRYPTO_cleanup_all_ex_data();
RAND_cleanup();
ERR_free_strings();
EVP_cleanup();
}
}
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