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@@ -0,0 +1,450 @@
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/**
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* OpenAI Codex (ChatGPT OAuth) flow
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*
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* NOTE: This module uses Node.js crypto and http for the OAuth callback.
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* It is only intended for CLI use, not browser environments.
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*/
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// NEVER convert to top-level imports - breaks browser/Vite builds (web-ui)
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let _randomBytes: typeof import("node:crypto").randomBytes | null = null;
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let _http: typeof import("node:http") | null = null;
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if (typeof process !== "undefined" && (process.versions?.node || process.versions?.bun)) {
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import("node:crypto").then((m) => {
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_randomBytes = m.randomBytes;
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});
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import("node:http").then((m) => {
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_http = m;
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});
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}
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import { oauthErrorHtml, oauthSuccessHtml } from "./oauth-page.js";
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import { generatePKCE } from "./pkce.js";
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import type { OAuthCredentials, OAuthLoginCallbacks, OAuthPrompt, OAuthProviderInterface } from "./types.js";
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const CLIENT_ID = "app_EMoamEEZ73f0CkXaXp7hrann";
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const AUTHORIZE_URL = "https://auth.openai.com/oauth/authorize";
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const TOKEN_URL = "https://auth.openai.com/oauth/token";
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const REDIRECT_URI = "http://localhost:1455/auth/callback";
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const SCOPE = "openid profile email offline_access";
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const JWT_CLAIM_PATH = "https://api.openai.com/auth";
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type TokenSuccess = { type: "success"; access: string; refresh: string; expires: number };
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type TokenFailure = { type: "failed" };
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type TokenResult = TokenSuccess | TokenFailure;
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type JwtPayload = {
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[JWT_CLAIM_PATH]?: {
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chatgpt_account_id?: string;
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};
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[key: string]: unknown;
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};
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function createState(): string {
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if (!_randomBytes) {
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throw new Error("OpenAI Codex OAuth is only available in Node.js environments");
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}
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return _randomBytes(16).toString("hex");
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}
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function parseAuthorizationInput(input: string): { code?: string; state?: string } {
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const value = input.trim();
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if (!value) return {};
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try {
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const url = new URL(value);
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return {
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code: url.searchParams.get("code") ?? undefined,
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state: url.searchParams.get("state") ?? undefined,
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};
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} catch {
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// not a URL
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}
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if (value.includes("#")) {
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const [code, state] = value.split("#", 2);
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return { code, state };
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}
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if (value.includes("code=")) {
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const params = new URLSearchParams(value);
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return {
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code: params.get("code") ?? undefined,
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state: params.get("state") ?? undefined,
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};
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}
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return { code: value };
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}
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function decodeJwt(token: string): JwtPayload | null {
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try {
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const parts = token.split(".");
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if (parts.length !== 3) return null;
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const payload = parts[1] ?? "";
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const decoded = atob(payload);
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return JSON.parse(decoded) as JwtPayload;
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} catch {
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return null;
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}
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}
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async function exchangeAuthorizationCode(
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code: string,
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verifier: string,
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redirectUri: string = REDIRECT_URI,
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): Promise<TokenResult> {
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const response = await fetch(TOKEN_URL, {
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method: "POST",
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headers: { "Content-Type": "application/x-www-form-urlencoded" },
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body: new URLSearchParams({
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grant_type: "authorization_code",
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client_id: CLIENT_ID,
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code,
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code_verifier: verifier,
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redirect_uri: redirectUri,
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}),
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});
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if (!response.ok) {
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const text = await response.text().catch(() => "");
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console.error("[openai-codex] code->token failed:", response.status, text);
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return { type: "failed" };
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}
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const json = (await response.json()) as {
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access_token?: string;
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refresh_token?: string;
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expires_in?: number;
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};
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if (!json.access_token || !json.refresh_token || typeof json.expires_in !== "number") {
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console.error("[openai-codex] token response missing fields:", json);
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return { type: "failed" };
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}
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return {
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type: "success",
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access: json.access_token,
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refresh: json.refresh_token,
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expires: Date.now() + json.expires_in * 1000,
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};
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}
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async function refreshAccessToken(refreshToken: string): Promise<TokenResult> {
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try {
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const response = await fetch(TOKEN_URL, {
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method: "POST",
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headers: { "Content-Type": "application/x-www-form-urlencoded" },
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body: new URLSearchParams({
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grant_type: "refresh_token",
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refresh_token: refreshToken,
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client_id: CLIENT_ID,
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}),
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});
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if (!response.ok) {
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const text = await response.text().catch(() => "");
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console.error("[openai-codex] Token refresh failed:", response.status, text);
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return { type: "failed" };
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}
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const json = (await response.json()) as {
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access_token?: string;
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refresh_token?: string;
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expires_in?: number;
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};
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if (!json.access_token || !json.refresh_token || typeof json.expires_in !== "number") {
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console.error("[openai-codex] Token refresh response missing fields:", json);
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return { type: "failed" };
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}
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return {
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type: "success",
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access: json.access_token,
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refresh: json.refresh_token,
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expires: Date.now() + json.expires_in * 1000,
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};
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} catch (error) {
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console.error("[openai-codex] Token refresh error:", error);
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return { type: "failed" };
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}
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}
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async function createAuthorizationFlow(
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originator: string = "pi",
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): Promise<{ verifier: string; state: string; url: string }> {
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const { verifier, challenge } = await generatePKCE();
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const state = createState();
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const url = new URL(AUTHORIZE_URL);
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url.searchParams.set("response_type", "code");
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url.searchParams.set("client_id", CLIENT_ID);
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url.searchParams.set("redirect_uri", REDIRECT_URI);
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url.searchParams.set("scope", SCOPE);
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url.searchParams.set("code_challenge", challenge);
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url.searchParams.set("code_challenge_method", "S256");
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url.searchParams.set("state", state);
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url.searchParams.set("id_token_add_organizations", "true");
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url.searchParams.set("codex_cli_simplified_flow", "true");
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url.searchParams.set("originator", originator);
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return { verifier, state, url: url.toString() };
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}
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type OAuthServerInfo = {
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close: () => void;
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cancelWait: () => void;
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waitForCode: () => Promise<{ code: string } | null>;
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};
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function startLocalOAuthServer(state: string): Promise<OAuthServerInfo> {
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if (!_http) {
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throw new Error("OpenAI Codex OAuth is only available in Node.js environments");
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}
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let settleWait: ((value: { code: string } | null) => void) | undefined;
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const waitForCodePromise = new Promise<{ code: string } | null>((resolve) => {
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let settled = false;
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settleWait = (value) => {
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if (settled) return;
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settled = true;
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resolve(value);
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};
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});
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const server = _http.createServer((req, res) => {
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try {
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const url = new URL(req.url || "", "http://localhost");
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if (url.pathname !== "/auth/callback") {
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res.statusCode = 404;
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res.setHeader("Content-Type", "text/html; charset=utf-8");
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res.end(oauthErrorHtml("Callback route not found."));
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return;
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}
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if (url.searchParams.get("state") !== state) {
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res.statusCode = 400;
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res.setHeader("Content-Type", "text/html; charset=utf-8");
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res.end(oauthErrorHtml("State mismatch."));
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return;
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}
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const code = url.searchParams.get("code");
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if (!code) {
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res.statusCode = 400;
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res.setHeader("Content-Type", "text/html; charset=utf-8");
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res.end(oauthErrorHtml("Missing authorization code."));
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return;
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}
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res.statusCode = 200;
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res.setHeader("Content-Type", "text/html; charset=utf-8");
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res.end(oauthSuccessHtml("OpenAI authentication completed. You can close this window."));
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settleWait?.({ code });
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} catch {
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res.statusCode = 500;
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res.setHeader("Content-Type", "text/html; charset=utf-8");
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res.end(oauthErrorHtml("Internal error while processing OAuth callback."));
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}
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});
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return new Promise((resolve) => {
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server
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.listen(1455, "127.0.0.1", () => {
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resolve({
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close: () => server.close(),
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cancelWait: () => {
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settleWait?.(null);
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},
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waitForCode: () => waitForCodePromise,
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});
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})
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.on("error", (err: NodeJS.ErrnoException) => {
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console.error(
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"[openai-codex] Failed to bind http://127.0.0.1:1455 (",
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err.code,
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") Falling back to manual paste.",
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);
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settleWait?.(null);
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resolve({
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close: () => {
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try {
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server.close();
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} catch {
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// ignore
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}
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},
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cancelWait: () => {},
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waitForCode: async () => null,
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});
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});
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});
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}
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function getAccountId(accessToken: string): string | null {
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const payload = decodeJwt(accessToken);
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const auth = payload?.[JWT_CLAIM_PATH];
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const accountId = auth?.chatgpt_account_id;
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return typeof accountId === "string" && accountId.length > 0 ? accountId : null;
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}
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/**
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* Login with OpenAI Codex OAuth
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*
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* @param options.onAuth - Called with URL and instructions when auth starts
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* @param options.onPrompt - Called to prompt user for manual code paste (fallback if no onManualCodeInput)
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* @param options.onProgress - Optional progress messages
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* @param options.onManualCodeInput - Optional promise that resolves with user-pasted code.
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* Races with browser callback - whichever completes first wins.
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* Useful for showing paste input immediately alongside browser flow.
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* @param options.originator - OAuth originator parameter (defaults to "pi")
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*/
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export async function loginOpenAICodex(options: {
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onAuth: (info: { url: string; instructions?: string }) => void;
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onPrompt: (prompt: OAuthPrompt) => Promise<string>;
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onProgress?: (message: string) => void;
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onManualCodeInput?: () => Promise<string>;
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originator?: string;
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}): Promise<OAuthCredentials> {
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const { verifier, state, url } = await createAuthorizationFlow(options.originator);
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const server = await startLocalOAuthServer(state);
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options.onAuth({ url, instructions: "A browser window should open. Complete login to finish." });
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let code: string | undefined;
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try {
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if (options.onManualCodeInput) {
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// Race between browser callback and manual input
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let manualCode: string | undefined;
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let manualError: Error | undefined;
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const manualPromise = options
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.onManualCodeInput()
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.then((input) => {
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manualCode = input;
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server.cancelWait();
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})
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.catch((err) => {
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manualError = err instanceof Error ? err : new Error(String(err));
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server.cancelWait();
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});
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const result = await server.waitForCode();
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// If manual input was cancelled, throw that error
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if (manualError) {
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throw manualError;
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}
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if (result?.code) {
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// Browser callback won
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code = result.code;
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} else if (manualCode) {
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// Manual input won (or callback timed out and user had entered code)
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const parsed = parseAuthorizationInput(manualCode);
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if (parsed.state && parsed.state !== state) {
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throw new Error("State mismatch");
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}
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code = parsed.code;
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}
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// If still no code, wait for manual promise to complete and try that
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if (!code) {
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await manualPromise;
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if (manualError) {
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throw manualError;
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}
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if (manualCode) {
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const parsed = parseAuthorizationInput(manualCode);
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if (parsed.state && parsed.state !== state) {
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throw new Error("State mismatch");
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}
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code = parsed.code;
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}
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}
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} else {
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// Original flow: wait for callback, then prompt if needed
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const result = await server.waitForCode();
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if (result?.code) {
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code = result.code;
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}
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}
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// Fallback to onPrompt if still no code
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if (!code) {
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const input = await options.onPrompt({
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message: "Paste the authorization code (or full redirect URL):",
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});
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const parsed = parseAuthorizationInput(input);
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if (parsed.state && parsed.state !== state) {
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throw new Error("State mismatch");
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}
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code = parsed.code;
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}
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if (!code) {
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throw new Error("Missing authorization code");
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}
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const tokenResult = await exchangeAuthorizationCode(code, verifier);
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if (tokenResult.type !== "success") {
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throw new Error("Token exchange failed");
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}
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const accountId = getAccountId(tokenResult.access);
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if (!accountId) {
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throw new Error("Failed to extract accountId from token");
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}
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return {
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access: tokenResult.access,
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refresh: tokenResult.refresh,
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expires: tokenResult.expires,
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accountId,
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};
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} finally {
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server.close();
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}
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}
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/**
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* Refresh OpenAI Codex OAuth token
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*/
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export async function refreshOpenAICodexToken(refreshToken: string): Promise<OAuthCredentials> {
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const result = await refreshAccessToken(refreshToken);
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if (result.type !== "success") {
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throw new Error("Failed to refresh OpenAI Codex token");
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}
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const accountId = getAccountId(result.access);
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if (!accountId) {
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throw new Error("Failed to extract accountId from token");
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}
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return {
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access: result.access,
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refresh: result.refresh,
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expires: result.expires,
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accountId,
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};
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}
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export const openaiCodexOAuthProvider: OAuthProviderInterface = {
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id: "openai-codex",
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name: "ChatGPT Plus/Pro (Codex Subscription)",
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usesCallbackServer: true,
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async login(callbacks: OAuthLoginCallbacks): Promise<OAuthCredentials> {
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return loginOpenAICodex({
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onAuth: callbacks.onAuth,
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onPrompt: callbacks.onPrompt,
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onProgress: callbacks.onProgress,
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onManualCodeInput: callbacks.onManualCodeInput,
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});
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},
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async refreshToken(credentials: OAuthCredentials): Promise<OAuthCredentials> {
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return refreshOpenAICodexToken(credentials.refresh);
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},
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getApiKey(credentials: OAuthCredentials): string {
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return credentials.access;
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},
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};
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Reference in new issue
Block a user