feat: implement enhanced OAuth flow with browser support in OverteAuth class
This commit is contained in:
MayaTheShy
678
src/OverteAuth_new.cpp
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678
src/OverteAuth_new.cpp
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@@ -0,0 +1,678 @@
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// OverteAuth.cpp - Enhanced OAuth implementation with browser flow
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#include "OverteAuth.hpp"
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#include <iostream>
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#include <sstream>
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#include <fstream>
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#include <cstring>
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#include <chrono>
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#include <random>
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#include <iomanip>
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#include <curl/curl.h>
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// For HTTP callback server
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <fcntl.h>
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// For file paths
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <pwd.h>
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using namespace std::chrono;
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OverteAuth::OverteAuth() {
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curl_global_init(CURL_GLOBAL_DEFAULT);
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// Try to load saved token
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loadTokenFromFile();
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}
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OverteAuth::~OverteAuth() {
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stopCallbackServer();
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curl_global_cleanup();
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}
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// ============================================================================
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// HTTP Helpers
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// ============================================================================
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size_t OverteAuth::writeCallback(void* contents, size_t size, size_t nmemb, void* userp) {
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size_t totalSize = size * nmemb;
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std::string* response = static_cast<std::string*>(userp);
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response->append(static_cast<char*>(contents), totalSize);
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return totalSize;
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}
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std::string OverteAuth::extractJsonString(const std::string& json, const std::string& key) {
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// Simple JSON string extraction
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std::string searchKey = "\"" + key + "\"";
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size_t keyPos = json.find(searchKey);
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if (keyPos == std::string::npos) return "";
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size_t colonPos = json.find(':', keyPos);
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if (colonPos == std::string::npos) return "";
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size_t quoteStart = json.find('"', colonPos);
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if (quoteStart == std::string::npos) return "";
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size_t quoteEnd = json.find('"', quoteStart + 1);
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if (quoteEnd == std::string::npos) return "";
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return json.substr(quoteStart + 1, quoteEnd - quoteStart - 1);
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}
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std::uint64_t OverteAuth::extractJsonInt(const std::string& json, const std::string& key) {
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std::string searchKey = "\"" + key + "\"";
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size_t keyPos = json.find(searchKey);
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if (keyPos == std::string::npos) return 0;
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size_t colonPos = json.find(':', keyPos);
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if (colonPos == std::string::npos) return 0;
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size_t numStart = colonPos + 1;
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while (numStart < json.size() && (json[numStart] == ' ' || json[numStart] == '\t')) {
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numStart++;
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}
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size_t numEnd = numStart;
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while (numEnd < json.size() && (json[numEnd] >= '0' && json[numEnd] <= '9')) {
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numEnd++;
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}
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if (numEnd == numStart) return 0;
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try {
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return std::stoull(json.substr(numStart, numEnd - numStart));
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} catch (...) {
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return 0;
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}
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}
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std::string OverteAuth::urlEncode(const std::string& value) {
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std::ostringstream escaped;
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escaped.fill('0');
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escaped << std::hex;
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for (char c : value) {
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if (isalnum(c) || c == '-' || c == '_' || c == '.' || c == '~') {
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escaped << c;
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} else {
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escaped << '%' << std::setw(2) << int((unsigned char) c);
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}
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}
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return escaped.str();
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}
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std::string OverteAuth::generateRandomState() {
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std::random_device rd;
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std::mt19937 gen(rd());
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std::uniform_int_distribution<> dis(0, 15);
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const char* hex_chars = "0123456789abcdef";
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std::string state;
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for (int i = 0; i < 32; i++) {
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state += hex_chars[dis(gen)];
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}
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return state;
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}
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bool OverteAuth::httpPost(const std::string& url, const std::string& postData, std::string& response) {
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CURL* curl = curl_easy_init();
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if (!curl) {
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m_lastError = "Failed to initialize CURL";
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return false;
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}
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response.clear();
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curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
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curl_easy_setopt(curl, CURLOPT_POSTFIELDS, postData.c_str());
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writeCallback);
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);
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curl_easy_setopt(curl, CURLOPT_USERAGENT, "Starworld/1.0");
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curl_easy_setopt(curl, CURLOPT_TIMEOUT, 30L);
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curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
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curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 1L);
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curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2L);
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struct curl_slist* headers = nullptr;
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headers = curl_slist_append(headers, "Content-Type: application/x-www-form-urlencoded");
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curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
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CURLcode res = curl_easy_perform(curl);
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long httpCode = 0;
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curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &httpCode);
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curl_slist_free_all(headers);
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curl_easy_cleanup(curl);
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if (res != CURLE_OK) {
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m_lastError = std::string("CURL error: ") + curl_easy_strerror(res);
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return false;
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}
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if (httpCode < 200 || httpCode >= 300) {
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m_lastError = "HTTP error " + std::to_string(httpCode) + ": " + response;
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return false;
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}
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return true;
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}
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bool OverteAuth::openBrowser(const std::string& url) {
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std::cout << "[OverteAuth] Opening browser to: " << url << std::endl;
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// Try xdg-open (Linux standard)
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std::string command = "xdg-open '" + url + "' >/dev/null 2>&1 &";
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int result = system(command.c_str());
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if (result != 0) {
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// Fallback attempts
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command = "x-www-browser '" + url + "' >/dev/null 2>&1 &";
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result = system(command.c_str());
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}
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if (result != 0) {
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m_lastError = "Failed to open browser. Please manually navigate to: " + url;
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std::cerr << "[OverteAuth] " << m_lastError << std::endl;
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return false;
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}
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return true;
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}
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// ============================================================================
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// Token Management
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// ============================================================================
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bool OverteAuth::isTokenExpired() const {
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auto now = duration_cast<seconds>(system_clock::now().time_since_epoch()).count();
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return now >= m_tokenExpiresAt;
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}
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bool OverteAuth::needsRefresh() const {
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auto now = duration_cast<seconds>(system_clock::now().time_since_epoch()).count();
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return (m_tokenExpiresAt - now) < 3600; // Less than 1 hour remaining
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}
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bool OverteAuth::parseTokenResponse(const std::string& jsonResponse) {
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m_accessToken = extractJsonString(jsonResponse, "access_token");
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m_refreshToken = extractJsonString(jsonResponse, "refresh_token");
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if (m_accessToken.empty()) {
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m_lastError = "No access token in response";
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std::string error = extractJsonString(jsonResponse, "error");
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if (!error.empty()) {
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std::string errorDesc = extractJsonString(jsonResponse, "error_description");
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m_lastError = error + ": " + errorDesc;
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}
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return false;
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}
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// Extract expiration
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std::uint64_t expiresIn = extractJsonInt(jsonResponse, "expires_in");
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if (expiresIn == 0) {
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expiresIn = 3600; // Default to 1 hour
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}
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auto now = duration_cast<seconds>(system_clock::now().time_since_epoch()).count();
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m_tokenExpiresAt = now + expiresIn;
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std::cout << "[OverteAuth] Token received, expires in " << expiresIn << " seconds" << std::endl;
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std::cout << "[OverteAuth] Access token: " << m_accessToken.substr(0, 20) << "..." << std::endl;
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// Save to file
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saveTokenToFile();
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return true;
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}
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std::string OverteAuth::getConfigDir() {
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const char* home = getenv("HOME");
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if (!home) {
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struct passwd* pw = getpwuid(getuid());
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home = pw->pw_dir;
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}
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std::string configDir = std::string(home) + "/.config/starworld";
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// Create directory if it doesn't exist
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mkdir(configDir.c_str(), 0700);
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return configDir;
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}
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std::string OverteAuth::getTokenFilePath() {
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return getConfigDir() + "/overte_token.txt";
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}
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bool OverteAuth::loadTokenFromFile() {
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std::string filepath = getTokenFilePath();
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std::ifstream file(filepath);
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if (!file.is_open()) {
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return false; // File doesn't exist yet
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}
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std::string line;
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std::getline(file, m_metaverseUrl);
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std::getline(file, m_username);
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std::getline(file, m_accessToken);
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std::getline(file, m_refreshToken);
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if (std::getline(file, line)) {
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try {
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m_tokenExpiresAt = std::stoull(line);
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} catch (...) {
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m_tokenExpiresAt = 0;
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}
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}
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file.close();
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if (m_accessToken.empty()) {
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return false;
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}
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std::cout << "[OverteAuth] Loaded saved token for " << m_username << std::endl;
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// Check if token needs refresh
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if (isTokenExpired()) {
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std::cout << "[OverteAuth] Token expired, attempting refresh..." << std::endl;
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return refreshAccessToken();
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} else if (needsRefresh()) {
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std::cout << "[OverteAuth] Token expiring soon, refreshing..." << std::endl;
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refreshAccessToken(); // Best effort, don't fail if this doesn't work
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}
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return !m_accessToken.empty();
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}
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bool OverteAuth::saveTokenToFile() {
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std::string filepath = getTokenFilePath();
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std::ofstream file(filepath);
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if (!file.is_open()) {
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m_lastError = "Failed to save token to " + filepath;
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return false;
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}
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file << m_metaverseUrl << "\n";
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file << m_username << "\n";
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file << m_accessToken << "\n";
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file << m_refreshToken << "\n";
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file << m_tokenExpiresAt << "\n";
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file.close();
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// Set file permissions to user-only
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chmod(filepath.c_str(), 0600);
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std::cout << "[OverteAuth] Token saved to " << filepath << std::endl;
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return true;
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}
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// ============================================================================
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// Authentication Methods
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// ============================================================================
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bool OverteAuth::login(const std::string& username, const std::string& password, const std::string& metaverseUrl) {
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m_metaverseUrl = metaverseUrl;
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m_username = username;
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std::string tokenUrl = m_metaverseUrl;
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if (tokenUrl.back() == '/') tokenUrl.pop_back();
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tokenUrl += "/oauth/token";
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std::ostringstream postData;
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postData << "grant_type=password";
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postData << "&username=" << urlEncode(username);
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postData << "&password=" << urlEncode(password);
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postData << "&scope=owner";
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std::string response;
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if (!httpPost(tokenUrl, postData.str(), response)) {
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std::cerr << "[OverteAuth] Login failed: " << m_lastError << std::endl;
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return false;
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}
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if (!parseTokenResponse(response)) {
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std::cerr << "[OverteAuth] Failed to parse token: " << m_lastError << std::endl;
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return false;
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}
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std::cout << "[OverteAuth] Successfully authenticated as " << username << std::endl;
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return true;
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}
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bool OverteAuth::loginWithAuthCode(const std::string& authCode, const std::string& redirectUri) {
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std::string tokenUrl = m_metaverseUrl;
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if (tokenUrl.back() == '/') tokenUrl.pop_back();
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tokenUrl += "/oauth/token";
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std::ostringstream postData;
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postData << "grant_type=authorization_code";
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postData << "&code=" << urlEncode(authCode);
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postData << "&redirect_uri=" << urlEncode(redirectUri);
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postData << "&client_id=" << m_clientId;
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if (!m_clientSecret.empty()) {
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postData << "&client_secret=" << urlEncode(m_clientSecret);
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}
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std::string response;
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if (!httpPost(tokenUrl, postData.str(), response)) {
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std::cerr << "[OverteAuth] Token exchange failed: " << m_lastError << std::endl;
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return false;
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}
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if (!parseTokenResponse(response)) {
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std::cerr << "[OverteAuth] Failed to parse token: " << m_lastError << std::endl;
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return false;
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}
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std::cout << "[OverteAuth] Successfully exchanged authorization code for token" << std::endl;
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return true;
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}
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bool OverteAuth::refreshAccessToken() {
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if (m_refreshToken.empty()) {
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m_lastError = "No refresh token available";
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return false;
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}
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std::string tokenUrl = m_metaverseUrl;
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if (tokenUrl.back() == '/') tokenUrl.pop_back();
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tokenUrl += "/oauth/token";
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std::ostringstream postData;
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postData << "grant_type=refresh_token";
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postData << "&refresh_token=" << urlEncode(m_refreshToken);
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postData << "&scope=owner";
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std::string response;
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if (!httpPost(tokenUrl, postData.str(), response)) {
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std::cerr << "[OverteAuth] Token refresh failed: " << m_lastError << std::endl;
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// Clear tokens on refresh failure
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logout();
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return false;
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}
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if (!parseTokenResponse(response)) {
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std::cerr << "[OverteAuth] Failed to parse refreshed token: " << m_lastError << std::endl;
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logout();
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return false;
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}
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std::cout << "[OverteAuth] Successfully refreshed access token" << std::endl;
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return true;
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}
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void OverteAuth::logout() {
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m_accessToken.clear();
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m_refreshToken.clear();
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m_username.clear();
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m_tokenExpiresAt = 0;
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// Delete token file
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std::string filepath = getTokenFilePath();
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unlink(filepath.c_str());
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std::cout << "[OverteAuth] Logged out" << std::endl;
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}
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// ============================================================================
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// OAuth Callback Server (for browser flow)
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// ============================================================================
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std::string OverteAuth::getCallbackURL() const {
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return "http://localhost:" + std::to_string(m_callbackPort) + "/callback";
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}
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bool OverteAuth::startCallbackServer() {
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if (m_callbackRunning) {
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return true; // Already running
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}
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m_callbackServerFd = socket(AF_INET, SOCK_STREAM, 0);
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if (m_callbackServerFd < 0) {
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m_lastError = "Failed to create socket";
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return false;
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}
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// Allow address reuse
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int opt = 1;
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setsockopt(m_callbackServerFd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
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struct sockaddr_in addr{};
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addr.sin_family = AF_INET;
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addr.sin_addr.s_addr = INADDR_ANY;
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addr.sin_port = htons(8765); // Try port 8765 first
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// Try to bind to port 8765, or let OS choose
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if (bind(m_callbackServerFd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
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// Let OS choose port
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addr.sin_port = 0;
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if (bind(m_callbackServerFd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
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m_lastError = "Failed to bind socket";
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close(m_callbackServerFd);
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m_callbackServerFd = -1;
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return false;
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}
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}
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// Get the actual port assigned
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socklen_t addrLen = sizeof(addr);
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if (getsockname(m_callbackServerFd, (struct sockaddr*)&addr, &addrLen) < 0) {
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m_lastError = "Failed to get socket name";
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close(m_callbackServerFd);
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m_callbackServerFd = -1;
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return false;
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}
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m_callbackPort = ntohs(addr.sin_port);
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if (listen(m_callbackServerFd, 5) < 0) {
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m_lastError = "Failed to listen on socket";
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close(m_callbackServerFd);
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m_callbackServerFd = -1;
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return false;
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}
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m_callbackRunning = true;
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m_callbackThread = std::make_unique<std::thread>(&OverteAuth::callbackServerThread, this);
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|
||||
std::cout << "[OverteAuth] Callback server listening on port " << m_callbackPort << std::endl;
|
||||
return true;
|
||||
}
|
||||
|
||||
void OverteAuth::stopCallbackServer() {
|
||||
if (!m_callbackRunning) {
|
||||
return;
|
||||
}
|
||||
|
||||
m_callbackRunning = false;
|
||||
|
||||
if (m_callbackServerFd >= 0) {
|
||||
close(m_callbackServerFd);
|
||||
m_callbackServerFd = -1;
|
||||
}
|
||||
|
||||
if (m_callbackThread && m_callbackThread->joinable()) {
|
||||
m_callbackThread->join();
|
||||
}
|
||||
m_callbackThread.reset();
|
||||
}
|
||||
|
||||
void OverteAuth::callbackServerThread() {
|
||||
std::cout << "[OverteAuth] Callback server thread started" << std::endl;
|
||||
|
||||
while (m_callbackRunning) {
|
||||
fd_set readfds;
|
||||
FD_ZERO(&readfds);
|
||||
FD_SET(m_callbackServerFd, &readfds);
|
||||
|
||||
struct timeval timeout{};
|
||||
timeout.tv_sec = 1;
|
||||
timeout.tv_usec = 0;
|
||||
|
||||
int activity = select(m_callbackServerFd + 1, &readfds, nullptr, nullptr, &timeout);
|
||||
|
||||
if (activity < 0 || !m_callbackRunning) {
|
||||
break;
|
||||
}
|
||||
|
||||
if (activity == 0) {
|
||||
continue; // Timeout, check if still running
|
||||
}
|
||||
|
||||
struct sockaddr_in clientAddr{};
|
||||
socklen_t clientLen = sizeof(clientAddr);
|
||||
int clientFd = accept(m_callbackServerFd, (struct sockaddr*)&clientAddr, &clientLen);
|
||||
|
||||
if (clientFd < 0) {
|
||||
if (m_callbackRunning) {
|
||||
std::cerr << "[OverteAuth] Failed to accept connection" << std::endl;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
handleCallbackRequest(clientFd);
|
||||
close(clientFd);
|
||||
|
||||
// After handling one callback, we can stop
|
||||
m_callbackRunning = false;
|
||||
}
|
||||
|
||||
std::cout << "[OverteAuth] Callback server thread stopped" << std::endl;
|
||||
}
|
||||
|
||||
void OverteAuth::handleCallbackRequest(int clientFd) {
|
||||
char buffer[4096];
|
||||
ssize_t bytesRead = recv(clientFd, buffer, sizeof(buffer) - 1, 0);
|
||||
|
||||
if (bytesRead <= 0) {
|
||||
return;
|
||||
}
|
||||
|
||||
buffer[bytesRead] = '\0';
|
||||
std::string request(buffer);
|
||||
|
||||
// Parse HTTP GET request
|
||||
// Format: GET /callback?code=ABC&state=XYZ HTTP/1.1
|
||||
size_t getPos = request.find("GET /callback");
|
||||
if (getPos == std::string::npos) {
|
||||
const char* response = "HTTP/1.1 404 Not Found\r\n\r\n";
|
||||
send(clientFd, response, strlen(response), 0);
|
||||
return;
|
||||
}
|
||||
|
||||
// Extract code and state
|
||||
std::string code, state;
|
||||
size_t codePos = request.find("code=");
|
||||
if (codePos != std::string::npos) {
|
||||
size_t codeStart = codePos + 5;
|
||||
size_t codeEnd = request.find_first_of("& \r\n", codeStart);
|
||||
code = request.substr(codeStart, codeEnd - codeStart);
|
||||
}
|
||||
|
||||
size_t statePos = request.find("state=");
|
||||
if (statePos != std::string::npos) {
|
||||
size_t stateStart = statePos + 6;
|
||||
size_t stateEnd = request.find_first_of("& \r\n", stateStart);
|
||||
state = request.substr(stateStart, stateEnd - stateStart);
|
||||
}
|
||||
|
||||
// Verify state matches (CSRF protection)
|
||||
if (state != m_authState) {
|
||||
std::cerr << "[OverteAuth] State mismatch - possible CSRF attack!" << std::endl;
|
||||
const char* response = "HTTP/1.1 400 Bad Request\r\nContent-Type: text/html\r\n\r\n"
|
||||
"<html><body><h1>Authentication Failed</h1><p>Invalid state parameter</p></body></html>";
|
||||
send(clientFd, response, strlen(response), 0);
|
||||
return;
|
||||
}
|
||||
|
||||
if (code.empty()) {
|
||||
std::cerr << "[OverteAuth] No authorization code received" << std::endl;
|
||||
const char* response = "HTTP/1.1 400 Bad Request\r\nContent-Type: text/html\r\n\r\n"
|
||||
"<html><body><h1>Authentication Failed</h1><p>No authorization code received</p></body></html>";
|
||||
send(clientFd, response, strlen(response), 0);
|
||||
return;
|
||||
}
|
||||
|
||||
m_receivedAuthCode = code;
|
||||
std::cout << "[OverteAuth] Received authorization code: " << code.substr(0, 10) << "..." << std::endl;
|
||||
|
||||
// Send success response
|
||||
const char* response = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n"
|
||||
"<html><body><h1>Authentication Successful!</h1>"
|
||||
"<p>You can now close this window and return to Starworld.</p>"
|
||||
"<script>window.close();</script></body></html>";
|
||||
send(clientFd, response, strlen(response), 0);
|
||||
}
|
||||
|
||||
bool OverteAuth::loginWithBrowser(const std::string& metaverseUrl) {
|
||||
m_metaverseUrl = metaverseUrl;
|
||||
|
||||
// Start callback server
|
||||
if (!startCallbackServer()) {
|
||||
std::cerr << "[OverteAuth] Failed to start callback server: " << m_lastError << std::endl;
|
||||
return false;
|
||||
}
|
||||
|
||||
// Generate CSRF protection state
|
||||
m_authState = generateRandomState();
|
||||
m_receivedAuthCode.clear();
|
||||
|
||||
// Construct authorization URL
|
||||
std::string authUrl = m_metaverseUrl;
|
||||
if (authUrl.back() == '/') authUrl.pop_back();
|
||||
authUrl += "/oauth/authorize?";
|
||||
authUrl += "response_type=code";
|
||||
authUrl += "&client_id=" + urlEncode(m_clientId);
|
||||
authUrl += "&redirect_uri=" + urlEncode(getCallbackURL());
|
||||
authUrl += "&scope=owner";
|
||||
authUrl += "&state=" + m_authState;
|
||||
|
||||
std::cout << "[OverteAuth] ===================================" << std::endl;
|
||||
std::cout << "[OverteAuth] Opening browser for authentication" << std::endl;
|
||||
std::cout << "[OverteAuth] If browser doesn't open automatically, navigate to:" << std::endl;
|
||||
std::cout << "[OverteAuth] " << authUrl << std::endl;
|
||||
std::cout << "[OverteAuth] ===================================" << std::endl;
|
||||
|
||||
if (!openBrowser(authUrl)) {
|
||||
std::cerr << "[OverteAuth] Failed to open browser" << std::endl;
|
||||
// Continue anyway - user can manually open URL
|
||||
}
|
||||
|
||||
// Wait for callback (max 5 minutes)
|
||||
std::cout << "[OverteAuth] Waiting for authentication callback..." << std::endl;
|
||||
auto startTime = std::chrono::steady_clock::now();
|
||||
while (m_callbackRunning && m_receivedAuthCode.empty()) {
|
||||
std::this_thread::sleep_for(std::chrono::milliseconds(500));
|
||||
|
||||
auto elapsed = std::chrono::duration_cast<std::chrono::seconds>(
|
||||
std::chrono::steady_clock::now() - startTime).count();
|
||||
|
||||
if (elapsed > 300) { // 5 minutes timeout
|
||||
std::cerr << "[OverteAuth] Authentication timeout" << std::endl;
|
||||
stopCallbackServer();
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
stopCallbackServer();
|
||||
|
||||
if (m_receivedAuthCode.empty()) {
|
||||
m_lastError = "No authorization code received";
|
||||
return false;
|
||||
}
|
||||
|
||||
// Exchange authorization code for access token
|
||||
std::cout << "[OverteAuth] Exchanging authorization code for access token..." << std::endl;
|
||||
return loginWithAuthCode(m_receivedAuthCode, getCallbackURL());
|
||||
}
|
||||
Reference in New Issue
Block a user