/* Copyright (c) 2018 Albert S. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include #include #include #include "handlerlogin.h" #include "../logger.h" struct LoginFail { std::mutex mutex; std::atomic count; time_t lastfail; }; static std::map loginFails; //TODO: make configurable bool HandlerLogin::isBanned(std::string ip) { if(utils::hasKey(loginFails, ip)) { LoginFail &fl = loginFails[ip]; std::lock_guard 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 HandlerLogin::pbkdf5(std::string password, const std::vector &salt) { unsigned char hash[32]; const EVP_MD *sha256 = EVP_sha256(); const unsigned char *rawsalt = reinterpret_cast(salt.data()); PKCS5_PBKDF2_HMAC(password.c_str(), password.size(), rawsalt, salt.size(), 300000, sha256, sizeof(hash), hash); std::vector result; for(size_t i = 0; i < sizeof(hash); i++) { result.push_back(static_cast(hash[i])); } return result; } Response HandlerLogin::handleRequest(const Request &r) { auto createErrorReesponse = [&]() { return errorResponse("Login error", "The supplied credenetials 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 = userDao->find(username); if(!user) { return createErrorReesponse(); } if(!user->enabled) { 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->) } 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)); loginTemplatePage.setVar("title", createPageTitle("Login")); Response result; result.setStatus(200); result.setBody(loginTemplatePage.render()); return result; } bool HandlerLogin::canAccess(const Permissions &perms) { return true; }