spatie/url-signer

Generate a url with an expiration date and signature to prevent unauthorized access

1.0.2 2017-04-09 08:13 UTC

README

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This package can create URLs with a limited lifetime. This is done by adding an expiration date and a signature to the URL.

$urlSigner = new MD5UrlSigner('randomkey');

$urlSigner->sign('https://myapp.com', 30);

// => The generated url will be valid for 30 days

This will output an URL that looks like https://myapp.com/?expires=xxxx&signature=xxxx.

Imagine mailing this URL out to the users of your application. When a user clicks on a signed URL your application can validate it with:

$urlSigner->validate('https://myapp.com/?expires=xxxx&signature=xxxx');

Spatie is a webdesign agency in Antwerp, Belgium. You'll find an overview of all our open source projects on our website.

Postcardware

You're free to use this package (it's MIT-licensed), but if it makes it to your production environment we highly appreciate you sending us a postcard from your hometown, mentioning which of our package(s) you are using.

Our address is: Spatie, Samberstraat 69D, 2060 Antwerp, Belgium.

All postcards are published on our website.

Installation

The package can installed via Composer:

composer require spatie/url-signer

Usage

A signer-object can sign URLs and validate signed URLs. A secret key is used to generate signatures.

use Spatie\UrlSigner\MD5UrlSigner;

$urlSigner = new MD5UrlSigner('mysecretkey');

Generating URLs

Signed URLs can be generated by providing a regular URL and an expiration date to the sign method.

$expirationDate = (new DateTime)->modify('10 days');

$urlSigner->sign('https://myapp.com', $expirationDate);

// => The generated url will be valid for 10 days

If an integer is provided as expiration date, the url will be valid for that amount of days.

$urlSigner->sign('https://myapp.com', 30);

// => The generated url will be valid for 30 days

Validating URLs

To validate a signed URL, simply call the validate() method. This will return a boolean.

$urlSigner->validate('https://myapp.com/?expires=1439223344&signature=2d42f65bd023362c6b61f7432705d811');

// => true

$urlSigner->validate('https://myapp.com/?expires=1439223344&signature=2d42f65bd0-INVALID-23362c6b61f7432705d811');

// => false

Writing custom signers

This packages provides a signer that uses md5 to generate signature. You can create your own signer by implementing the Spatie\UrlSigner\UrlSigner-interface. If you let your signer extend Spatie\UrlSigner\BaseUrlSigner you'll only need to provide the createSignature-method.

Tests

The tests can be run with:

$ vendor/bin/phpspec run

Integrations

To get started quickly in Laravel you can use the spatie/laravel-url-signer package.

Changelog

Please see CHANGELOG for more information what has changed recently.

Contributing

Please see CONTRIBUTING for details.

Security

If you discover any security related issues, please email freek@spatie.be instead of using the issue tracker.

Credits

About Spatie

Spatie is a webdesign agency in Antwerp, Belgium. You'll find an overview of all our open source projects on our website.

License

The MIT License (MIT). Please see License File for more information.