1 files changed, 257 insertions, 0 deletions
diff --git a/packages/backend/src/server/api/service/github.ts b/packages/backend/src/server/api/service/github.ts
new file mode 100644
index 0000000000..0616f3f773
--- /dev/null
+++ b/packages/backend/src/server/api/service/github.ts
@@ -0,0 +1,257 @@
+import * as Koa from 'koa';
+import * as Router from '@koa/router';
+import { getJson } from '@/misc/fetch';
+import { OAuth2 } from 'oauth';
+import config from '@/config/index';
+import { publishMainStream } from '@/services/stream';
+import { redisClient } from '../../../db/redis';
+import { v4 as uuid } from 'uuid';
+import signin from '../common/signin';
+import { fetchMeta } from '@/misc/fetch-meta';
+import { Users, UserProfiles } from '@/models/index';
+import { ILocalUser } from '@/models/entities/user';
+
+function getUserToken(ctx: Koa.Context) {
+	return ((ctx.headers['cookie'] || '').match(/igi=(\w+)/) || [null, null])[1];
+}
+
+function compareOrigin(ctx: Koa.Context) {
+	function normalizeUrl(url: string) {
+		return url ? url.endsWith('/') ? url.substr(0, url.length - 1) : url : '';
+	}
+
+	const referer = ctx.headers['referer'];
+
+	return (normalizeUrl(referer) == normalizeUrl(config.url));
+}
+
+// Init router
+const router = new Router();
+
+router.get('/disconnect/github', async ctx => {
+	if (!compareOrigin(ctx)) {
+		ctx.throw(400, 'invalid origin');
+		return;
+	}
+
+	const userToken = getUserToken(ctx);
+	if (!userToken) {
+		ctx.throw(400, 'signin required');
+		return;
+	}
+
+	const user = await Users.findOneOrFail({
+		host: null,
+		token: userToken
+	});
+
+	const profile = await UserProfiles.findOneOrFail(user.id);
+
+	delete profile.integrations.github;
+
+	await UserProfiles.update(user.id, {
+		integrations: profile.integrations,
+	});
+
+	ctx.body = `GitHubの連携を解除しました :v:`;
+
+	// Publish i updated event
+	publishMainStream(user.id, 'meUpdated', await Users.pack(user, user, {
+		detail: true,
+		includeSecrets: true
+	}));
+});
+
+async function getOath2() {
+	const meta = await fetchMeta(true);
+
+	if (meta.enableGithubIntegration && meta.githubClientId && meta.githubClientSecret) {
+		return new OAuth2(
+			meta.githubClientId,
+			meta.githubClientSecret,
+			'https://github.com/',
+			'login/oauth/authorize',
+			'login/oauth/access_token');
+	} else {
+		return null;
+	}
+}
+
+router.get('/connect/github', async ctx => {
+	if (!compareOrigin(ctx)) {
+		ctx.throw(400, 'invalid origin');
+		return;
+	}
+
+	const userToken = getUserToken(ctx);
+	if (!userToken) {
+		ctx.throw(400, 'signin required');
+		return;
+	}
+
+	const params = {
+		redirect_uri: `${config.url}/api/gh/cb`,
+		scope: ['read:user'],
+		state: uuid()
+	};
+
+	redisClient.set(userToken, JSON.stringify(params));
+
+	const oauth2 = await getOath2();
+	ctx.redirect(oauth2!.getAuthorizeUrl(params));
+});
+
+router.get('/signin/github', async ctx => {
+	const sessid = uuid();
+
+	const params = {
+		redirect_uri: `${config.url}/api/gh/cb`,
+		scope: ['read:user'],
+		state: uuid()
+	};
+
+	ctx.cookies.set('signin_with_github_sid', sessid, {
+		path: '/',
+		secure: config.url.startsWith('https'),
+		httpOnly: true
+	});
+
+	redisClient.set(sessid, JSON.stringify(params));
+
+	const oauth2 = await getOath2();
+	ctx.redirect(oauth2!.getAuthorizeUrl(params));
+});
+
+router.get('/gh/cb', async ctx => {
+	const userToken = getUserToken(ctx);
+
+	const oauth2 = await getOath2();
+
+	if (!userToken) {
+		const sessid = ctx.cookies.get('signin_with_github_sid');
+
+		if (!sessid) {
+			ctx.throw(400, 'invalid session');
+			return;
+		}
+
+		const code = ctx.query.code;
+
+		if (!code) {
+			ctx.throw(400, 'invalid session');
+			return;
+		}
+
+		const { redirect_uri, state } = await new Promise<any>((res, rej) => {
+			redisClient.get(sessid, async (_, state) => {
+				res(JSON.parse(state));
+			});
+		});
+
+		if (ctx.query.state !== state) {
+			ctx.throw(400, 'invalid session');
+			return;
+		}
+
+		const { accessToken } = await new Promise<any>((res, rej) =>
+			oauth2!.getOAuthAccessToken(code, {
+				redirect_uri
+			}, (err, accessToken, refresh, result) => {
+				if (err) {
+					rej(err);
+				} else if (result.error) {
+					rej(result.error);
+				} else {
+					res({ accessToken });
+				}
+			}));
+
+		const { login, id } = await getJson('https://api.github.com/user', 'application/vnd.github.v3+json', 10 * 1000, {
+			'Authorization': `bearer ${accessToken}`
+		});
+		if (!login || !id) {
+			ctx.throw(400, 'invalid session');
+			return;
+		}
+
+		const link = await UserProfiles.createQueryBuilder()
+			.where(`"integrations"->'github'->>'id' = :id`, { id: id })
+			.andWhere('"userHost" IS NULL')
+			.getOne();
+
+		if (link == null) {
+			ctx.throw(404, `@${login}と連携しているMisskeyアカウントはありませんでした...`);
+			return;
+		}
+
+		signin(ctx, await Users.findOne(link.userId) as ILocalUser, true);
+	} else {
+		const code = ctx.query.code;
+
+		if (!code) {
+			ctx.throw(400, 'invalid session');
+			return;
+		}
+
+		const { redirect_uri, state } = await new Promise<any>((res, rej) => {
+			redisClient.get(userToken, async (_, state) => {
+				res(JSON.parse(state));
+			});
+		});
+
+		if (ctx.query.state !== state) {
+			ctx.throw(400, 'invalid session');
+			return;
+		}
+
+		const { accessToken } = await new Promise<any>((res, rej) =>
+			oauth2!.getOAuthAccessToken(
+				code,
+				{ redirect_uri },
+				(err, accessToken, refresh, result) => {
+					if (err)
+						rej(err);
+					else if (result.error)
+						rej(result.error);
+					else
+						res({ accessToken });
+				}));
+
+		const { login, id } = await getJson('https://api.github.com/user', 'application/vnd.github.v3+json', 10 * 1000, {
+			'Authorization': `bearer ${accessToken}`
+		});
+
+		if (!login || !id) {
+			ctx.throw(400, 'invalid session');
+			return;
+		}
+
+		const user = await Users.findOneOrFail({
+			host: null,
+			token: userToken
+		});
+
+		const profile = await UserProfiles.findOneOrFail(user.id);
+
+		await UserProfiles.update(user.id, {
+			integrations: {
+				...profile.integrations,
+				github: {
+					accessToken: accessToken,
+					id: id,
+					login: login,
+				}
+			}
+		});
+
+		ctx.body = `GitHub: @${login} を、Misskey: @${user.username} に接続しました！`;
+
+		// Publish i updated event
+		publishMainStream(user.id, 'meUpdated', await Users.pack(user, user, {
+			detail: true,
+			includeSecrets: true
+		}));
+	}
+});
+
+export default router;