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// The MIT License
// Copyright (c) 2010-2022 Google LLC. http://angular.io/license
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// Taken and adapted from https://github.com/angular/angular-cli/blob/173823d/scripts/validate-licenses.ts.
import * as path from 'path';
import checker from 'license-checker';
import spdxSatisfies from 'spdx-satisfies';
/**
* A general note on some black listed specific licenses:
*
* - CC0 This is not a valid license. It does not grant copyright of the
* code/asset, and does not resolve patents or other licensed work. The
* different claims also have no standing in court and do not provide
* protection to or from Google and/or third parties. We cannot use nor
* contribute to CC0 licenses.
* - Public Domain Same as CC0, it is not a valid license.
*/
const allowedLicenses = [
// Regular valid open source licenses supported by Google.
'MIT',
'ISC',
'Apache-2.0',
'Python-2.0',
'Artistic-2.0',
'BlueOak-1.0.0',
'BSD-2-Clause',
'BSD-3-Clause',
'BSD-4-Clause',
// All CC-BY licenses have a full copyright grant and attribution section.
'CC-BY-3.0',
'CC-BY-4.0',
// Have a full copyright grant. Validated by opensource team.
'Unlicense',
'CC0-1.0',
'0BSD',
// Combinations.
'(AFL-2.1 OR BSD-2-Clause)',
];
// Name variations of SPDX licenses that some packages have.
// Licenses not included in SPDX but accepted will be converted to MIT.
const licenseReplacements: {[key: string]: string} = {
// Just a longer string that our script catches. SPDX official name is the shorter one.
'Apache License, Version 2.0': 'Apache-2.0',
Apache2: 'Apache-2.0',
'Apache 2.0': 'Apache-2.0',
'Apache v2': 'Apache-2.0',
'AFLv2.1': 'AFL-2.1',
// BSD is BSD-2-clause by default.
BSD: 'BSD-2-Clause',
};
// Specific packages to ignore, add a reason in a comment. Format: package-name@version.
const ignoredPackages = [
// * Development only
'spdx-license-ids@3.0.5', // CC0 but it's content only (index.json, no code) and not distributed.
];
// Check if a license is accepted by an array of accepted licenses
function _passesSpdx(licenses: string[], accepted: string[]) {
try {
return spdxSatisfies(licenses.join(' AND '), accepted.join(' OR '));
} catch {
return false;
}
}
function main(): Promise<number> {
return new Promise(resolve => {
const startFolder = path.join(__dirname, '..', '..');
checker.init(
{start: startFolder, excludePrivatePackages: true},
(err: Error, json: object) => {
if (err) {
console.error(`Something happened:\n${err.message}`);
resolve(1);
} else {
console.info(`Testing ${Object.keys(json).length} packages.\n`);
// Packages with bad licenses are those that neither pass SPDX nor are ignored.
const badLicensePackages = Object.keys(json)
.map(key => {
return {
id: key,
licenses: ([] as string[])
.concat((json[key] as {licenses: string[]}).licenses)
// `*` is used when the license is guessed.
.map(x => {
return x.replace(/\*$/, '');
})
.map(x => {
return x in licenseReplacements
? licenseReplacements[x]
: x;
}),
};
})
.filter(pkg => {
return !_passesSpdx(pkg.licenses, allowedLicenses);
})
.filter(pkg => {
return !ignoredPackages.find(ignored => {
return ignored === pkg.id;
});
});
// Report packages with bad licenses
if (badLicensePackages.length > 0) {
console.error('Invalid package licences found:');
badLicensePackages.forEach(pkg => {
console.error(`${pkg.id}: ${JSON.stringify(pkg.licenses)}`);
});
console.error(
`\n${badLicensePackages.length} total packages with invalid licenses.`
);
resolve(2);
} else {
console.info('All package licenses are valid.');
resolve(0);
}
}
}
);
});
}
main().then(code => {
return process.exit(code);
});
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