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5d0a52f 347f81b 5d0a52f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | /**
* JWT decode utilities for Codex Desktop proxy.
* No signature verification — just payload extraction.
*/
export function decodeJwtPayload(token: string): Record<string, unknown> | null {
const parts = token.split(".");
if (parts.length < 2) return null;
try {
const payload = Buffer.from(parts[1], "base64url").toString("utf8");
const parsed = JSON.parse(payload);
if (typeof parsed === "object" && parsed !== null) {
return parsed as Record<string, unknown>;
}
return null;
} catch {
return null;
}
}
export function extractChatGptAccountId(token: string): string | null {
const payload = decodeJwtPayload(token);
if (!payload) return null;
try {
const auth = payload["https://api.openai.com/auth"];
if (auth && typeof auth === "object" && auth !== null) {
const accountId = (auth as Record<string, unknown>).chatgpt_account_id;
return typeof accountId === "string" ? accountId : null;
}
} catch {
// ignore
}
return null;
}
export function extractUserProfile(
token: string,
): { email?: string; chatgpt_user_id?: string; chatgpt_plan_type?: string } | null {
const payload = decodeJwtPayload(token);
if (!payload) return null;
try {
const profile = payload["https://api.openai.com/profile"] as Record<string, unknown> | undefined;
const auth = payload["https://api.openai.com/auth"] as Record<string, unknown> | undefined;
const email = typeof profile?.email === "string" ? profile.email : undefined;
// chatgpt_plan_type lives in the /auth claim, not /profile
const chatgpt_plan_type =
(typeof auth?.chatgpt_plan_type === "string" ? auth.chatgpt_plan_type : undefined) ??
(typeof profile?.chatgpt_plan_type === "string" ? profile.chatgpt_plan_type : undefined);
const chatgpt_user_id =
(typeof auth?.chatgpt_user_id === "string" ? auth.chatgpt_user_id : undefined) ??
(typeof profile?.chatgpt_user_id === "string" ? profile.chatgpt_user_id : undefined);
if (email || chatgpt_plan_type || chatgpt_user_id) {
return { email, chatgpt_user_id, chatgpt_plan_type };
}
} catch {
// ignore
}
return null;
}
export function isTokenExpired(token: string, marginSeconds = 0): boolean {
const payload = decodeJwtPayload(token);
if (!payload) return true;
const exp = payload.exp;
if (typeof exp !== "number") return true;
const now = Math.floor(Date.now() / 1000);
return now >= exp - marginSeconds;
}
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