Add Okta Provider (#114)

* Add Okta Provider

* Fix styles.

* Clean up composer json

* Add extraConfig values for base_url

OktaExtendSocialite.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace SocialiteProviders\Okta;
+
+use SocialiteProviders\Manager\SocialiteWasCalled;
+
+class OktaExtendSocialite
+{
+    /**
+     * Execute the provider.
+     */
+    public function handle(SocialiteWasCalled $socialiteWasCalled)
+    {
+        $socialiteWasCalled->extendSocialite('okta', __NAMESPACE__.'\Provider');
+    }
+}

Provider.php

@@ -0,0 +1,116 @@
+<?php
+
+namespace SocialiteProviders\Okta;
+
+use SocialiteProviders\Manager\OAuth2\User;
+use Laravel\Socialite\Two\ProviderInterface;
+use SocialiteProviders\Manager\OAuth2\AbstractProvider;
+
+class Provider extends AbstractProvider implements ProviderInterface
+{
+    /**
+     * Unique Provider Identifier.
+     */
+    const IDENTIFIER = 'OKTA';
+
+    /**
+     * Scopes defintions.
+     *
+     * @see http://developer.okta.com/docs/api/resources/oidc.html#scopes
+     */
+    const SCOPE_OPENID = 'openid';
+    const SCOPE_PROFILE = 'profile';
+    const SCOPE_EMAIL = 'email';
+    const SCOPE_ADDRESS = 'address';
+    const SCOPE_PHONE = 'phone';
+    const SCOPE_OFFLINE_ACCESS = 'offline_access';
+
+    /**
+     * {@inheritdoc}
+     */
+    protected $scopes = [
+        'openid',
+        'profile',
+        'email',
+    ];
+
+    /**
+     * {@inheritdoc}
+     */
+    protected $scopeSeparator = ' ';
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function getOktaUrl()
+    {
+        return $this->getConfig('base_url');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public static function additionalConfigKeys()
+    {
+        return ['base_url'];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function getAuthUrl($state)
+    {
+        return $this->buildAuthUrlFromBase($this->getOktaUrl().'/oauth2/v1/authorize', $state);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function getTokenUrl()
+    {
+        return $this->getOktaUrl().'/oauth2/v1/token';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function getUserByToken($token)
+    {
+        $response = $this->getHttpClient()->get($this->getOktaUrl().'/oauth2/v1/userinfo', [
+            'headers' => [
+                'Authorization' => 'Bearer '.$token,
+            ],
+        ]);
+
+        return json_decode($response->getBody(), true);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function mapUserToObject(array $user)
+    {
+        return (new User())->setRaw($user)->map([
+            'id' => array_get($user, 'sub'),
+            'email' => array_get($user, 'email'),
+            'email_verified' => array_get($user, 'email_verified', false),
+            'nickname' => array_get($user, 'nickname'),
+            'name' => array_get($user, 'name'),
+            'first_name' => array_get($user, 'given_name'),
+            'last_name' => array_get($user, 'family_name'),
+            'profileUrl' => array_get($user, 'profile'),
+            'address' => array_get($user, 'address'),
+            'phone' => array_get($user, 'phone'),
+        ]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function getTokenFields($code)
+    {
+        return array_merge(parent::getTokenFields($code), [
+            'grant_type' => 'authorization_code',
+        ]);
+    }
+}

composer.json

@@ -0,0 +1,18 @@
+{
+    "name": "socialiteproviders/okta",
+    "description": "Okta OAuth2 Provider for Laravel Socialite",
+    "license": "MIT",
+    "authors": [{
+        "name": "Chase Coney",
+        "email": "[email protected]"
+    }],
+    "require": {
+        "php": "^5.6 || ^7.0",
+        "socialiteproviders/manager": "~2.0 || ~3.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "SocialiteProviders\\Okta\\": ""
+        }
+    }
+}