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/*
Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
Copyright (C) 2023 Spacebar and Spacebar Contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import {
ConnectedAccount,
ConnectedAccountCommonOAuthTokenResponse,
Connection,
ConnectionCallbackSchema,
ConnectionLoader,
DiscordApiErrors,
} from "@spacebar/util";
import wretch from "wretch";
import { XboxSettings } from "./XboxSettings";
interface XboxUserResponse {
IssueInstant: string;
NotAfter: string;
Token: string;
DisplayClaims: {
xui: {
gtg: string;
xid: string;
uhs: string;
agg: string;
usr: string;
utr: string;
prv: string;
}[];
};
}
// interface XboxErrorResponse {
// error: string;
// error_description: string;
// }
export default class XboxConnection extends Connection {
public readonly id = "xbox";
public readonly authorizeUrl =
"https://login.live.com/oauth20_authorize.srf";
public readonly tokenUrl = "https://login.live.com/oauth20_token.srf";
public readonly userInfoUrl =
"https://xsts.auth.xboxlive.com/xsts/authorize";
public readonly userAuthUrl =
"https://user.auth.xboxlive.com/user/authenticate";
public readonly scopes = ["Xboxlive.signin", "Xboxlive.offline_access"];
settings: XboxSettings = new XboxSettings();
init(): void {
const settings = ConnectionLoader.getConnectionConfig<XboxSettings>(
this.id,
this.settings,
);
if (settings.enabled && (!settings.clientId || !settings.clientSecret))
throw new Error(`Invalid settings for connection ${this.id}`);
}
getAuthorizationUrl(userId: string): string {
const state = this.createState(userId);
const url = new URL(this.authorizeUrl);
url.searchParams.append("client_id", this.settings.clientId as string);
url.searchParams.append("redirect_uri", this.getRedirectUri());
url.searchParams.append("response_type", "code");
url.searchParams.append("scope", this.scopes.join(" "));
url.searchParams.append("state", state);
url.searchParams.append("approval_prompt", "auto");
return url.toString();
}
getTokenUrl(): string {
return this.tokenUrl;
}
async getUserToken(token: string): Promise<string> {
return wretch(this.userAuthUrl)
.headers({
"x-xbl-contract-version": "3",
"Content-Type": "application/json",
Accept: "application/json",
})
.body(
JSON.stringify({
RelyingParty: "http://auth.xboxlive.com",
TokenType: "JWT",
Properties: {
AuthMethod: "RPS",
SiteName: "user.auth.xboxlive.com",
RpsTicket: `d=${token}`,
},
}),
)
.post()
.json((res: XboxUserResponse) => res.Token)
.catch((e) => {
console.error(e);
throw DiscordApiErrors.GENERAL_ERROR;
});
}
async exchangeCode(
state: string,
code: string,
): Promise<ConnectedAccountCommonOAuthTokenResponse> {
this.validateState(state);
const url = this.getTokenUrl();
return wretch(url.toString())
.headers({
Accept: "application/json",
"Content-Type": "application/x-www-form-urlencoded",
Authorization: `Basic ${Buffer.from(
`${this.settings.clientId as string}:${
this.settings.clientSecret as string
}`,
).toString("base64")}`,
})
.body(
new URLSearchParams({
grant_type: "authorization_code",
code: code,
client_id: this.settings.clientId as string,
redirect_uri: this.getRedirectUri(),
scope: this.scopes.join(" "),
}),
)
.post()
.json<ConnectedAccountCommonOAuthTokenResponse>()
.catch((e) => {
console.error(e);
throw DiscordApiErrors.GENERAL_ERROR;
});
}
async getUser(token: string): Promise<XboxUserResponse> {
const url = new URL(this.userInfoUrl);
return wretch(url.toString())
.headers({
"x-xbl-contract-version": "3",
"Content-Type": "application/json",
Accept: "application/json",
})
.body(
JSON.stringify({
RelyingParty: "http://xboxlive.com",
TokenType: "JWT",
Properties: {
UserTokens: [token],
SandboxId: "RETAIL",
},
}),
)
.post()
.json<XboxUserResponse>()
.catch((e) => {
console.error(e);
throw DiscordApiErrors.GENERAL_ERROR;
});
}
async handleCallback(
params: ConnectionCallbackSchema,
): Promise<ConnectedAccount | null> {
const { state, code } = params;
if (!code) throw new Error("No code provided");
const userId = this.getUserId(state);
const tokenData = await this.exchangeCode(state, code);
const userToken = await this.getUserToken(tokenData.access_token);
const userInfo = await this.getUser(userToken);
const exists = await this.hasConnection(
userId,
userInfo.DisplayClaims.xui[0].xid,
);
if (exists) return null;
return await this.createConnection({
token_data: { ...tokenData, fetched_at: Date.now() },
user_id: userId,
external_id: userInfo.DisplayClaims.xui[0].xid,
friend_sync: params.friend_sync,
name: userInfo.DisplayClaims.xui[0].gtg,
type: this.id,
});
}
}
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