Full Code of segmentio/is-url for AI

Repository: segmentio/is-url
Branch: master
Commit: 21689377c842
Files: 8
Total size: 6.8 KB

Directory structure:
gitextract_kedmbt3t/

├── .gitignore
├── .travis.yml
├── History.md
├── LICENSE-MIT
├── Readme.md
├── index.js
├── package.json
└── test/
    └── index.js

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FILE CONTENTS
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FILE: .gitignore
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node_modules
components
build

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FILE: .travis.yml
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language: node_js
node_js:
  - 8

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FILE: History.md
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1.2.0 - November 25, 2014
-------------------------
* add support for protocol relative urls

1.1.0 - February 8, 2013
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* support any protocol
* support paths on localhost

1.0.0 - January 17, 2013
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* allow localhost to have a port

0.1.0 - September 8, 2013
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* make regexp match more valid url types

0.0.2 - August 2, 2013
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* remove loose matching

0.0.1 - August 2, 2013
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:sparkles:

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FILE: LICENSE-MIT
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MIT 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.


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FILE: Readme.md
================================================
# is-url

> **Note**  
> Segment has paused maintenance on this project, but may return it to an active status in the future. Issues and pull requests from external contributors are not being considered, although internal contributions may appear from time to time. The project remains available under its open source license for anyone to use.

Check whether a string is a URL.

## Installation

```sh
npm install is-url
```

## API

### `isUrl(string)`

Returns a Boolean indicating whether `string` is a URL.

## License

MIT


================================================
FILE: index.js
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/**
 * Expose `isUrl`.
 */

module.exports = isUrl;

/**
 * RegExps.
 * A URL must match #1 and then at least one of #2/#3.
 * Use two levels of REs to avoid REDOS.
 */

var protocolAndDomainRE = /^(?:\w+:)?\/\/(\S+)$/;

var localhostDomainRE = /^localhost[\:?\d]*(?:[^\:?\d]\S*)?$/
var nonLocalhostDomainRE = /^[^\s\.]+\.\S{2,}$/;

/**
 * Loosely validate a URL `string`.
 *
 * @param {String} string
 * @return {Boolean}
 */

function isUrl(string){
  if (typeof string !== 'string') {
    return false;
  }

  var match = string.match(protocolAndDomainRE);
  if (!match) {
    return false;
  }

  var everythingAfterProtocol = match[1];
  if (!everythingAfterProtocol) {
    return false;
  }

  if (localhostDomainRE.test(everythingAfterProtocol) ||
      nonLocalhostDomainRE.test(everythingAfterProtocol)) {
    return true;
  }

  return false;
}


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FILE: package.json
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{
  "name": "is-url",
  "description": "Check whether a string is a URL.",
  "repository": "https://github.com/segmentio/is-url",
  "version": "1.2.4",
  "scripts": {
    "test": "mocha --reporter spec"
  },
  "license": "MIT",
  "devDependencies": {
    "mocha": "*"
  }
}


================================================
FILE: test/index.js
================================================

try {
  var url = require('is-url');
} catch (e) {
  var url = require('..');
}

var assert = require('assert');

describe('is-url', function () {
  describe('valid', function () {
    it('http://google.com', function () {
      assert(url('http://google.com'));
    });

    it('https://google.com', function () {
      assert(url('https://google.com'));
    });

    it('ftp://google.com', function () {
      assert(url('ftp://google.com'));
    });

    it('http://www.google.com', function () {
      assert(url('http://www.google.com'));
    });

    it('http://google.com/something', function () {
      assert(url('http://google.com/something'));
    });

    it('http://google.com?q=query', function () {
      assert(url('http://google.com?q=query'));
    });

    it('http://google.com#hash', function () {
      assert(url('http://google.com#hash'));
    });

    it('http://google.com/something?q=query#hash', function () {
      assert(url('http://google.com/something?q=query#hash'));
    });

    it('http://google.co.uk', function () {
      assert(url('http://google.co.uk'));
    });

    it('http://www.google.co.uk', function () {
      assert(url('http://www.google.co.uk'));
    });

    it('http://google.cat', function () {
      assert(url('http://google.cat'));
    });

    it('https://d1f4470da51b49289906b3d6cbd65074@app.getsentry.com/13176', function () {
      assert(url('https://d1f4470da51b49289906b3d6cbd65074@app.getsentry.com/13176'));
    });

    it('http://0.0.0.0', function () {
      assert(url('http://0.0.0.0'));
    });

    it('http://localhost', function () {
      assert(url('http://localhost'));
    });

    it('postgres://u:p@example.com:5702/db', function () {
      assert(url('postgres://u:p@example.com:5702/db'));
    });

    it('redis://:123@174.129.42.52:13271', function () {
      assert(url('redis://:123@174.129.42.52:13271'));
    });

    it('mongodb://u:p@example.com:10064/db', function () {
      assert(url('mongodb://u:p@example.com:10064/db'));
    });

    it('ws://chat.example.com/games', function () {
      assert(url('ws://chat.example.com/games'));
    });

    it('wss://secure.example.com/biz', function () {
      assert(url('wss://secure.example.com/biz'));
    });

    it('http://localhost:4000', function () {
      assert(url('http://localhost:4000'));
    });

    it('http://localhost:342/a/path', function () {
      assert(url('http://localhost:342/a/path'));
    });

    it('//google.com', function () {
      assert(url('//google.com'));
    });
  });

  describe('invalid', function () {
    it('http://', function () {
      assert(!url('http://'));
    });

    it('http://google', function () {
      assert(!url('http://google'));
    });

    it('http://google.', function () {
      assert(!url('http://google.'));
    });

    it('google', function () {
      assert(!url('google'));
    });

    it('google.com', function () {
      assert(!url('google.com'));
    });

    it('empty', function () {
      assert(!url(''));
    });

    it('undef', function () {
      assert(!url(undefined));
    });

    it('object', function () {
      assert(!url({}));
    });

    it('re', function () {
      assert(!url(/abc/));
    });
  });

  describe('redos', function () {
    it('redos exploit', function () {
      // Invalid. This should be discovered in under 1 second.
      var attackString = 'a://localhost' + '9'.repeat(100000) + '\t';
      var before = process.hrtime();
      assert(!url(attackString), 'attackString was valid');
      var elapsed = process.hrtime(before);
      assert(elapsed[0] < 1, 'attackString took ' + elapsed[0] + ' > 1 seconds');
    });
  });
});