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/*
* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "SslContext.h"
#include "Config.h"
#include "Log.h"
#include "Memory.h"
#include <boost/filesystem/operations.hpp>
#include <boost/filesystem/path.hpp>
#include <openssl/store.h>
#include <openssl/ui.h>
bool Battlenet::SslContext::_usesDevWildcardCertificate = false;
namespace
{
auto CreatePasswordUiMethodFromPemCallback(::pem_password_cb* callback)
{
return Trinity::make_unique_ptr_with_deleter(UI_UTIL_wrap_read_pem_callback(callback, 0), &::UI_destroy_method);
}
auto OpenOpenSSLStore(boost::filesystem::path const& storePath, UI_METHOD const* passwordCallback, void* passwordCallbackData)
{
std::string uri;
uri.reserve(6 + storePath.size());
uri += "file:";
std::string genericPath = storePath.generic_string();
if (!genericPath.empty() && !genericPath.starts_with('/'))
uri += '/'; // ensure the path starts with / (windows special case, unix absolute paths already do)
uri += genericPath;
return Trinity::make_unique_ptr_with_deleter(OSSL_STORE_open(uri.c_str(), passwordCallback, passwordCallbackData, nullptr, nullptr), &::OSSL_STORE_close);
}
boost::system::error_code GetLastOpenSSLError()
{
auto ossl_error = ::ERR_get_error();
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
if (ERR_SYSTEM_ERROR(ossl_error))
return boost::system::error_code(static_cast<int>(::ERR_GET_REASON(ossl_error)), boost::asio::error::get_system_category());
#endif
return boost::system::error_code(static_cast<int>(ossl_error), boost::asio::error::get_ssl_category());
}
}
bool Battlenet::SslContext::Initialize()
{
boost::system::error_code err;
#define LOAD_CHECK(fn) do { fn; \
if (err) \
{ \
TC_LOG_ERROR("server.ssl", #fn " failed: {}", err.message()); \
return false; \
} } while (0)
std::string certificateChainFile = sConfigMgr->GetStringDefault("CertificatesFile", "./bnetserver.cert.pem");
auto passwordCallback = [](std::size_t /*max_length*/, boost::asio::ssl::context::password_purpose /*purpose*/) -> std::string
{
return sConfigMgr->GetStringDefault("PrivateKeyPassword", "");
};
LOAD_CHECK(instance().set_password_callback(passwordCallback, err));
SSL_CTX* nativeContext = instance().native_handle();
auto password_ui_method = CreatePasswordUiMethodFromPemCallback(SSL_CTX_get_default_passwd_cb(nativeContext));
auto store = OpenOpenSSLStore(boost::filesystem::absolute(certificateChainFile),
password_ui_method.get(), SSL_CTX_get_default_passwd_cb_userdata(nativeContext));
if (!store)
{
err = GetLastOpenSSLError();
TC_LOG_ERROR("server.ssl", "OSSL_STORE_open failed: {}", err.message());
return false;
}
EVP_PKEY* key = nullptr;
STACK_OF(X509)* certs = sk_X509_new_null();
while (!OSSL_STORE_eof(store.get()))
{
OSSL_STORE_INFO* info = OSSL_STORE_load(store.get());
if (!info)
continue;
switch (OSSL_STORE_INFO_get_type(info))
{
case OSSL_STORE_INFO_PKEY:
key = OSSL_STORE_INFO_get1_PKEY(info);
break;
case OSSL_STORE_INFO_CERT:
sk_X509_push(certs, OSSL_STORE_INFO_get1_CERT(info));
break;
default:
break;
}
}
if (sk_X509_num(certs) > 0)
{
X509* cert = sk_X509_shift(certs);
_usesDevWildcardCertificate = [&]
{
X509_NAME* nm = X509_get_subject_name(cert);
int32 lastpos = -1;
while (true)
{
lastpos = X509_NAME_get_index_by_NID(nm, NID_commonName, lastpos);
if (lastpos == -1)
break;
X509_NAME_ENTRY* e = X509_NAME_get_entry(nm, lastpos);
if (!e)
continue;
ASN1_STRING* text = X509_NAME_ENTRY_get_data(e);
if (!text)
continue;
unsigned char* utf8TextRaw = nullptr;
if (int utf8Length = ASN1_STRING_to_UTF8(&utf8TextRaw, text); utf8Length >= 0)
{
auto utf8Text = Trinity::make_unique_ptr_with_deleter(utf8TextRaw, [](unsigned char* ptr) { ::OPENSSL_free(ptr); });
if (std::string_view(reinterpret_cast<char const*>(utf8Text.get()), utf8Length) == "*.*")
return true;
}
}
return false;
}();
SSL_CTX_use_cert_and_key(nativeContext, cert, key, certs, 1);
}
sk_X509_free(certs);
if (!key)
{
std::string privateKeyFile = sConfigMgr->GetStringDefault("PrivateKeyFile", "./bnetserver.key.pem");
LOAD_CHECK(instance().use_private_key_file(privateKeyFile, boost::asio::ssl::context::pem, err));
}
#undef LOAD_CHECK
return true;
}
boost::asio::ssl::context& Battlenet::SslContext::instance()
{
static boost::asio::ssl::context context(boost::asio::ssl::context::tls);
return context;
}
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