HandlerLogin: Use Authenticator, drop own logic

handlers/handlerlogin.cpp

@@ -20,53 +20,9 @@ SOFTWARE.
 */
 #include <atomic>
 #include <mutex>
-#include <openssl/evp.h>
 #include "handlerlogin.h"
 #include "../logger.h"
-struct LoginFail
-{
-	std::mutex mutex;
-	std::atomic<unsigned int> count;
-	time_t lastfail;
-};
-static std::map<std::string, LoginFail> loginFails;
-
-// TODO: make configurable
-bool HandlerLogin::isBanned(std::string ip)
-{
-	if(utils::hasKey(loginFails, ip))
-	{
-		LoginFail &fl = loginFails[ip];
-		std::lock_guard<std::mutex> lock(fl.mutex);
-		return fl.count > 5 && (time(nullptr) - fl.lastfail) < 1200;
-	}
-	return false;
-}
-
-void HandlerLogin::incFailureCount(std::string ip)
-{
-	LoginFail &fl = loginFails[ip];
-	fl.count += 1;
-	fl.lastfail = time(nullptr);
-}
-
-std::vector<char> HandlerLogin::pbkdf5(std::string password, const std::vector<char> &salt)
-{
-	unsigned char hash[32];
-	const EVP_MD *sha256 = EVP_sha256();
-	const unsigned char *rawsalt = reinterpret_cast<const unsigned char *>(salt.data());
-	PKCS5_PBKDF2_HMAC(password.c_str(), password.size(), rawsalt, salt.size(), 300000, sha256, sizeof(hash), hash);
-
-	std::vector<char> result;
-
-	for(size_t i = 0; i < sizeof(hash); i++)
-	{
-
-		result.push_back(static_cast<char>(hash[i]));
-	}
-
-	return result;
-}
+#include "../authenticator.h"
 
 Response HandlerLogin::handleRequest(const Request &r)
 {
@@ -74,48 +30,35 @@ Response HandlerLogin::handleRequest(const Request &r)
 		return errorResponse("Login error", "The supplied credentials are incorrect");
 	};
 
-	if(isBanned(r.getIp()))
-	{
-		return errorResponse("Banned", "You have been banned for too many login attempts. Try again later");
-	}
 	if(r.param("submit") == "1")
 	{
 		std::string password = r.post("password");
 		std::string username = r.post("user");
 
 		auto userDao = this->database->createUserDao();
-		std::optional<User> user = userDao->find(username);
-		if(!user)
+		Authenticator authenticator(*userDao);
+
+		std::variant<User, AuthenticationError> authresult = authenticator.authenticate(username, password, r.getIp());
+		if(std::holds_alternative<User>(authresult))
 		{
-			return createErrorReesponse();
+			User user = std::get<User>(authresult);
+			*(this->userSession) = Session(user);
+			Response r = Response::redirectTemporarily(urlProvider->index());
+			return r;
 		}
-		if(!user->enabled)
+		AuthenticationError error = std::get<AuthenticationError>(authresult);
+		if(error == AuthenticationError::UserDisabled)
 		{
 			return errorResponse("Login failed", "The user account has been disabled");
 		}
 
-		auto hashresult = pbkdf5(password, user.value().salt);
-		// TODO: timing attack
-		if(hashresult == user.value().password)
-		{
-			loginFails.erase(r.getIp());
-			Response r = Response::redirectTemporarily(urlProvider->index());
-			*(this->userSession) = Session(user.value());
-			return r;
-		}
-		else
-		{
-			// TODO: only if wanted by config
-			incFailureCount(r.getIp());
-			return createErrorReesponse();
-		}
-
-		// auto pbkdf5 = pbkdf5(password, user->)
+		return errorResponse("Login failed", "Login with supplied credentials failed");
 	}
 	std::string page = r.get("page");
 	if(page.empty())
+	{
 		page = "index";
-
+	}
 	TemplatePage &loginTemplatePage = this->templ->getPage("login");
 	setGeneralVars(loginTemplatePage);
 	loginTemplatePage.setVar("loginurl", urlProvider->login(page));
@@ -123,6 +66,7 @@ Response HandlerLogin::handleRequest(const Request &r)
 	Response result;
 	result.setStatus(200);
 	result.setBody(loginTemplatePage.render());
+
 	return result;
 }
 

handlers/handlerlogin.h

@@ -5,11 +5,6 @@
 
 class HandlerLogin : public Handler
 {
-  private:
-	bool isBanned(std::string ip);
-	void incFailureCount(std::string ip);
-	std::vector<char> pbkdf5(std::string password, const std::vector<char> &salt);
-
   public:
 	HandlerLogin();
 	Response handleRequest(const Request &r) override;