76 lines
2.7 KiB
TypeScript
76 lines
2.7 KiB
TypeScript
// Imports
|
|
import * as jwt from 'jsonwebtoken';
|
|
import {GithubPullRequests, PullRequest} from '../common/github-pull-requests';
|
|
import {GithubTeams} from '../common/github-teams';
|
|
import {assertNotMissingOrEmpty} from '../common/utils';
|
|
import {UploadError} from './upload-error';
|
|
|
|
// Interfaces - Types
|
|
interface JwtPayload {
|
|
slug: string;
|
|
'pull-request': number;
|
|
}
|
|
|
|
// Classes
|
|
export class BuildVerifier {
|
|
// Properties - Protected
|
|
protected githubPullRequests: GithubPullRequests;
|
|
protected githubTeams: GithubTeams;
|
|
|
|
// Constructor
|
|
constructor(protected secret: string, githubToken: string, protected repoSlug: string, organization: string,
|
|
protected allowedTeamSlugs: string[]) {
|
|
assertNotMissingOrEmpty('secret', secret);
|
|
assertNotMissingOrEmpty('githubToken', githubToken);
|
|
assertNotMissingOrEmpty('repoSlug', repoSlug);
|
|
assertNotMissingOrEmpty('organization', organization);
|
|
assertNotMissingOrEmpty('allowedTeamSlugs', allowedTeamSlugs && allowedTeamSlugs.join(''));
|
|
|
|
this.githubPullRequests = new GithubPullRequests(githubToken, repoSlug);
|
|
this.githubTeams = new GithubTeams(githubToken, organization);
|
|
}
|
|
|
|
// Methods - Public
|
|
public verify(pr: number, authHeader: string): Promise<void> {
|
|
return Promise.resolve().
|
|
then(() => this.extractJwtString(authHeader)).
|
|
then(jwtString => this.verifyJwt(pr, jwtString)).
|
|
then(jwtPayload => this.fetchPr(jwtPayload['pull-request'])).
|
|
then(prInfo => this.verifyPr(prInfo.user.login)).
|
|
catch(err => { throw new UploadError(403, `Error while verifying upload for PR ${pr}: ${err}`); });
|
|
}
|
|
|
|
// Methods - Protected
|
|
protected extractJwtString(input: string): string {
|
|
return input.replace(/^token +/i, '');
|
|
}
|
|
|
|
protected fetchPr(pr: number): Promise<PullRequest> {
|
|
return this.githubPullRequests.fetch(pr);
|
|
}
|
|
|
|
protected verifyJwt(pr: number, token: string): Promise<JwtPayload> {
|
|
return new Promise((resolve, reject) => {
|
|
jwt.verify(token, this.secret, {issuer: 'Travis CI, GmbH'}, (err, payload) => {
|
|
if (err) {
|
|
reject(err.message || err);
|
|
} else if (payload.slug !== this.repoSlug) {
|
|
reject(`jwt slug invalid. expected: ${this.repoSlug}`);
|
|
} else if (payload['pull-request'] !== pr) {
|
|
reject(`jwt pull-request invalid. expected: ${pr}`);
|
|
} else {
|
|
resolve(payload);
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
protected verifyPr(username: string): Promise<void> {
|
|
const errorMessage = `User '${username}' is not an active member of any of: ` +
|
|
`${this.allowedTeamSlugs.join(', ')}`;
|
|
|
|
return this.githubTeams.isMemberBySlug(username, this.allowedTeamSlugs).
|
|
then(isMember => isMember ? Promise.resolve() : Promise.reject(errorMessage));
|
|
}
|
|
}
|