codekingpro/portable-devtools

1"use strict";
2Object.defineProperty(exports, "__esModule", { value: true });
3exports.DEFAULT_TIMEOUT = exports.DEFAULT_RETRY = void 0;
4exports.createBundleBuilder = createBundleBuilder;
5exports.createKeyFinder = createKeyFinder;
6exports.createVerificationPolicy = createVerificationPolicy;
7/*
8Copyright 2023 The Sigstore Authors.
9
10Licensed under the Apache License, Version 2.0 (the "License");
11you may not use this file except in compliance with the License.
12You may obtain a copy of the License at
13
14    http://www.apache.org/licenses/LICENSE-2.0
15
16Unless required by applicable law or agreed to in writing, software
17distributed under the License is distributed on an "AS IS" BASIS,
18WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19See the License for the specific language governing permissions and
20limitations under the License.
21*/
22const core_1 = require("@sigstore/core");
23const sign_1 = require("@sigstore/sign");
24const verify_1 = require("@sigstore/verify");
25exports.DEFAULT_RETRY = { retries: 2 };
26exports.DEFAULT_TIMEOUT = 5000;
27function createBundleBuilder(bundleType, options) {
28    const bundlerOptions = {
29        signer: initSigner(options),
30        witnesses: initWitnesses(options),
31    };
32    switch (bundleType) {
33        case 'messageSignature':
34            return new sign_1.MessageSignatureBundleBuilder(bundlerOptions);
35        case 'dsseEnvelope':
36            return new sign_1.DSSEBundleBuilder({
37                ...bundlerOptions,
38                certificateChain: options.legacyCompatibility,
39            });
40    }
41}
42// Translates the public KeySelector type into the KeyFinderFunc type needed by
43// the verifier.
44function createKeyFinder(keySelector) {
45    return (hint) => {
46        const key = keySelector(hint);
47        if (!key) {
48            throw new verify_1.VerificationError({
49                code: 'PUBLIC_KEY_ERROR',
50                message: `key not found: ${hint}`,
51            });
52        }
53        return {
54            publicKey: core_1.crypto.createPublicKey(key),
55            validFor: () => true,
56        };
57    };
58}
59function createVerificationPolicy(options) {
60    const policy = {};
61    const san = options.certificateIdentityEmail || options.certificateIdentityURI;
62    if (san) {
63        policy.subjectAlternativeName = san;
64    }
65    if (options.certificateIssuer) {
66        policy.extensions = { issuer: options.certificateIssuer };
67    }
68    return policy;
69}
70// Instantiate the FulcioSigner based on the supplied options.
71function initSigner(options) {
72    return new sign_1.FulcioSigner({
73        fulcioBaseURL: options.fulcioURL,
74        identityProvider: options.identityProvider || initIdentityProvider(options),
75        retry: options.retry ?? exports.DEFAULT_RETRY,
76        timeout: options.timeout ?? exports.DEFAULT_TIMEOUT,
77    });
78}
79// Instantiate an identity provider based on the supplied options. If an
80// explicit identity token is provided, use that. Otherwise, use the CI
81// context provider.
82function initIdentityProvider(options) {
83    const token = options.identityToken;
84    if (token) {
85        /* istanbul ignore next */
86        return { getToken: () => Promise.resolve(token) };
87    }
88    else {
89        return new sign_1.CIContextProvider('sigstore');
90    }
91}
92// Instantiate a collection of witnesses based on the supplied options.
93function initWitnesses(options) {
94    const witnesses = [];
95    if (isRekorEnabled(options)) {
96        witnesses.push(new sign_1.RekorWitness({
97            rekorBaseURL: options.rekorURL,
98            entryType: options.legacyCompatibility ? 'intoto' : 'dsse',
99            fetchOnConflict: false,
100            retry: options.retry ?? exports.DEFAULT_RETRY,
101            timeout: options.timeout ?? exports.DEFAULT_TIMEOUT,
102        }));
103    }
104    if (isTSAEnabled(options)) {
105        witnesses.push(new sign_1.TSAWitness({
106            tsaBaseURL: options.tsaServerURL,
107            retry: options.retry ?? exports.DEFAULT_RETRY,
108            timeout: options.timeout ?? exports.DEFAULT_TIMEOUT,
109        }));
110    }
111    return witnesses;
112}
113// Type assertion to ensure that Rekor is enabled
114function isRekorEnabled(options) {
115    return options.tlogUpload !== false;
116}
117// Type assertion to ensure that TSA is enabled
118function isTSAEnabled(options) {
119    return options.tsaServerURL !== undefined;
120}
121