1 files changed, 106 insertions, 0 deletions
diff --git a/Swiften/SASL/WindowsServicePrincipalName.cpp b/Swiften/SASL/WindowsServicePrincipalName.cpp
new file mode 100644
index 0000000..187e9ac
--- /dev/null
+++ b/Swiften/SASL/WindowsServicePrincipalName.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2015 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+
+#include <Swiften/SASL/WindowsServicePrincipalName.h>
+
+#include <vector>
+
+#include <Ntdsapi.h>
+
+#include <Swiften/Base/ByteArray.h>
+#include <Swiften/Base/Log.h>
+#include <Swiften/Base/String.h>
+
+namespace Swift {
+
+WindowsServicePrincipalName::WindowsServicePrincipalName(const std::string& serviceName) : serviceClass_(L"xmpp"), instancePort_(0) {
+	serviceName_ = convertStringToWString(serviceName);
+}
+
+WindowsServicePrincipalName::~WindowsServicePrincipalName() {
+}
+
+void WindowsServicePrincipalName::setServiceClass(const std::string& serviceClass) {
+	serviceClass_ = convertStringToWString(serviceClass);
+}
+
+void WindowsServicePrincipalName::setInstanceName(const std::string& instanceName) {
+	instanceName_ = convertStringToWString(instanceName);
+}
+
+void WindowsServicePrincipalName::setReferrer(const std::string& referrer) {
+	referrer_ = convertStringToWString(referrer);
+}
+
+std::string WindowsServicePrincipalName::toString() {
+	DWORD length = 512;
+	DWORD status = ERROR_BUFFER_OVERFLOW;
+	bool firstCall = true;
+	std::string str;
+
+	while (status == ERROR_BUFFER_OVERFLOW) {
+		std::vector<wchar_t> value(length);
+
+		/* length after this call will contain the required length if current length is not enough - so the next call should succeed */
+		status = dsMakeSpn(&length, vecptr(value));
+		if (status == ERROR_SUCCESS) {
+			str = convertWStringToString(std::wstring(vecptr(value), length-1 /* trailing 0 character */));
+			break;
+		}
+
+		if ((firstCall == false) || (status != ERROR_BUFFER_OVERFLOW)) {
+			std::stringstream errorString;
+			boost::system::error_code errorCode(status, boost::system::system_category());
+
+			errorString << "Error creating Service Principal Name: status: 0x" << std::hex << status << ": " << errorCode.message();
+
+			/* Any other error will be a programming error */
+			throw std::runtime_error(errorString.str());
+		}
+
+		firstCall = false;
+	}
+
+	SWIFT_LOG(debug) << "SPN: " << str << std::endl;
+	return str;
+}
+
+DWORD WindowsServicePrincipalName::dsMakeSpn(DWORD* length, wchar_t* value) {
+	DWORD status;
+
+#ifdef UNICODE
+	SWIFT_LOG(debug) << "UNICODE is defined" << std::endl;
+#else
+	SWIFT_LOG(debug) << "UNICODE is not defined" << std::endl;
+#endif
+
+	SWIFT_LOG(debug) << "serviceClass_: " << convertWStringToString(serviceClass_.c_str()) << std::endl;
+	SWIFT_LOG(debug) << "serviceName_: " << convertWStringToString(serviceName_.c_str()) << std::endl;
+	SWIFT_LOG(debug) << "instanceName_: " << convertWStringToString(instanceName_.c_str()) << std::endl;
+	SWIFT_LOG(debug) << "referrer_: " << convertWStringToString(referrer_.c_str()) << std::endl;
+	SWIFT_LOG(debug) << "instancePort_: " << instancePort_ << std::endl;
+	SWIFT_LOG(debug) << "length: " << *length << std::endl;
+
+	/* Call the Unicode function because that is recommended:
+https://msdn.microsoft.com/en-us/library/windows/desktop/ff381407%28v=vs.85%29.aspx */
+	status =  DsMakeSpnW(
+			serviceClass_.c_str(),
+			serviceName_.c_str(),
+			instanceName_.empty() ? NULL : instanceName_.c_str(),
+			instancePort_,
+			referrer_.empty() ? NULL : referrer_.c_str(),
+			length,
+			value);
+	if (status != ERROR_SUCCESS) {
+		boost::system::error_code errorCode(status, boost::system::system_category());
+
+		SWIFT_LOG(debug) << std::hex << "status: 0x" << status << ": " << errorCode.message() << std::endl;
+	}
+
+	return status;
+}
+
+}