README

Overview
Install
Quickstart
Using a File
Using a Database
Using HTTP
Using LDAP
Getting the User

Overview

pop-auth provides adapters to authenticate users via different authentication sources. The adapters share the same interface and are interchangeable. The available available adapters are:

File
Database
HTTP
LDAP

pop-auth is a component of the Pop PHP Framework.

Install

Install pop-auth using Composer.

composer require popphp/pop-auth

Or, require it in your composer.json file

"require": {
    "popphp/pop-auth" : "^4.0.1"
}

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Quickstart

To verify an authentication attempt, create a new auth object pointed at its authentication source. From there, you can attempt to call the authenticate() with a username and password.

use Pop\Auth;

$auth = new Auth\File('/path/to/.htmyauth');

if ($auth->authenticate('admin', 'password')) {
    // User is authenticated
} else {
    // Handle failed authentication attempt
}

If you need to reference the same authentication attempt result at a later time in the application, you can call isAuthenticated():

var_dump($auth->isAuthenticated()); // bool

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Using a File

Using the file adapter, you would need to create we use a file containing a colon-delimited list of usernames and passwords or, preferably, password hashes:

testuser1:PASSWORD_HASH1
testuser2:PASSWORD_HASH2
testuser3:PASSWORD_HASH3

use Pop\Auth;

$auth = new Auth\File('/path/to/.htmyauth');
$auth->authenticate('testuser1', 'password'); // Return int

if ($auth->isAuthenticated()) { } // Returns bool

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Using a Database

Using the table adapter, you would need to create a table in a database that stores the users. There would need to be a correlating table class that extends Pop\Db\Record (for more on this, visit the pop-db component.)

For simplicity, the table class has been named MyApp\Table\Users and has a column called username and a column called password, but those column names can be changed.

use Pop\Auth;

$auth = new Auth\Table('MyApp\Table\Users');
$auth->authenticate('admin', 'password'); // int

if ($auth->isAuthenticated()) { } // bool

If the username/password fields are called something different in the table, that can be changed:

use Pop\Auth;

$auth = new Auth\Table('MyApp\Table\Users');
$auth->setUsernameField('user_name')
    ->setPasswordField('password_hash');

$auth->authenticate('admin', 'password'); // int

if ($auth->isAuthenticated()) { } // bool

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Using HTTP

Using the HTTP adapter, the user can send an authentication request over HTTP to a remote server. It will utilize the Pop\Http\Client and its supporting classes from the pop-http component. The following example will set the username and password as POST data in the payload.

use Pop\Auth\Http;
use Pop\Http\Client;

$auth = new Http(new Client('https://www.domain.com/auth', ['method' => 'post']));
$auth->authenticate('admin', 'password'); // Returns int

if ($auth->isAuthenticated()) { } // Returns bool

The following example will use a basic authorization header:

use Pop\Auth\Http;
use Pop\Http\Client;
use Pop\Http\Auth;

$client = new Client(
    'https://www.domain.com/auth', ['method' => 'post'],
    Auth::createBasic('admin', 'password')
); 

$auth = new Http($client);
$auth->authenticate('admin', 'password'); // Returns int

if ($auth->isAuthenticated()) { } // Returns bool

The following example will use a bearer token authorization header:

use Pop\Auth\Http;
use Pop\Http\Client;
use Pop\Http\Auth;

$client = new Client(
    'https://www.domain.com/auth', ['method' => 'post'],
    Auth::createBearer('AUTH_TOKEN')
);

$auth = new Http($client);
$auth->authenticate('admin', 'password');

if ($auth->isAuthenticated()) { } // Returns true

Like the Table adapter, if the username/password fields need to be set to something different to meet the requirements of the HTTP server, you can do that:

use Pop\Auth\Http;
use Pop\Http\Client;

$auth = new Http(new Client('https://www.domain.com/auth', ['method' => 'post']));
$auth->setUsernameField('user_name')
    ->setPasswordField('password_hash');

$auth->authenticate('admin', 'password'); // Returns int

if ($auth->isAuthenticated()) { } // Returns bool

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Using LDAP

Using the LDAP adapter, the user can send an authentication request using LDAP to a remote server. The user can set the port and other various options that may be necessary to communicate with the LDAP server.

use Pop\Auth;

$auth = new Auth\Ldap('ldap.domain', 389, [LDAP_OPT_PROTOCOL_VERSION => 3]);
$auth->authenticate('admin', 'password');

if ($auth->isAuthenticated()) { } // Returns true

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Getting the User

Both the table and HTTP adapters have a method that allow you to get any possible user data that may have been returned. That method is getUser():

use Pop\Auth;

$auth = new Auth\Table('MyApp\Table\Users');
$auth->authenticate('admin', 'password'); // int

if ($auth->isAuthenticated()) {
    $user = $auth->getUser();
}

This allows you access to the authenticated user's data without having to make an additional request.

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