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https://github.com/wallabag/guzzle-site-authenticator

A plugin for guzzle that authenticates, with credentials, to sites that require it.
https://github.com/wallabag/guzzle-site-authenticator

authentication guzzle php

Last synced: 11 months ago
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A plugin for guzzle that authenticates, with credentials, to sites that require it.

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# Guzzle site authenticator

[![CI](https://github.com/wallabag/guzzle-site-authenticator/actions/workflows/continuous-integration.yml/badge.svg)](https://github.com/wallabag/guzzle-site-authenticator/actions/workflows/continuous-integration.yml)

This package is a plugin for [guzzle](http://packagist.org/packages/guzzlehttp/guzzle) 5.x. It provides a subscriber
that can authenticate requests by posting login information.

It comes up as a Symfony bundle and a generic php lib.

## Installation

### Using composer
Add the package to your requirements using composer: `composer require bdunogier/guzzle-site-authenticator`.

If you're using the Symfony fullstack, add `BD\GuzzleSiteAuthenticatorBundle\BDGuzzleSiteAuthenticatorBundle` to your
kernel class.

## Usage
The guzzle subscriber, `Guzzle\AuthenticatorSubscriber`, must be attached to the Guzzle client. It is provided by the
bundle as `@bd_guzzle_site_authenticator.authenticator_subscriber`:

```php
$client = new GuzzleHttp\Client(['defaults' => ['cookies' => new FileCookieJar('/tmp/cookiejar.json')]]);
$client->getEmitter()->attach(
$container->get('bd_guzzle_site_authenticator.authenticator_subscriber')
);
```

### Cookies handling
The `CookieJar` passed to the guzzle client defaults is important: it will be used read/write cookies received by Guzzle,
and is required for authentication to work.

Send a request with Guzzle. If the request's host has a SiteConfig that requires configuration (see below), the plugin
will try to log in to the site if it does not have a cookie yet. After a request, if the response contains the not logged
in text (matched by xpath), it tries to login again, and retries the request.

## Site configuration
Login to sites configured via `SiteConfig` objects:

```php
$siteConfig = new BD\GuzzleSiteAuthenticator\SiteConfig\SiteConfig([
'host' => 'example.com',
'loginUri' => 'http://example.com/login',
'usernameField' => 'username',
'passwordField' => 'password',
'extraFields' => ['action' => 'login'],
'notLoggedInXpath' => "//div[@class='not-logged-in']",
'username' => "johndoe",
'password' => "unknown",
]);
```

`SiteConfig` objects are returned by a `SiteConfigBuilder`. The library comes with a default `ArraySiteConfigBuilder`,
that accepts a list of site config properties array, indexed by host. With the bundle, its contents can be configured
using the `bd_guzzle_site_authenticator.site_config` container variable:

```yaml
# config.yml
parameters:
bd_guzzle_site_authenticator.site_config:
example.com:
host: "example.com"
loginUri: "http://example.com/login"
usernameField: "username"
passwordField: "password"
extraFields: {action: login}
notLoggedInXpath: "//div[@class='not-logged-in']"
username: "johndoe"
password: "unknown"
otherexample.com:
host: ...
```

## Implementations
Used by [wallabag](http://github.com/wallabag/wallabag), a read it later web application, to fetch content from sites that require a login.

It implements a custom `SiteConfigBuilder`, based on sites configuration provided by [j0k3r/graby](http://github.com/j0k3r/graby).