diff --git a/.env.example b/.env.example
index f8365069..0c025d1e 100644
--- a/.env.example
+++ b/.env.example
@@ -55,3 +55,8 @@ USE_CRON_TRIGGER_CLEANUP=false
 LOG_FILE=/tmp/nexus.log
 
 TIMEZONE=PRC
+
+GOOGLE_DRIVE_CLIENT_ID=
+GOOGLE_DRIVE_CLIENT_SECRET=
+GOOGLE_DRIVE_REFRESH_TOKEN=
+GOOGLE_DRIVE_FOLDER_ID=
diff --git a/app/Console/Commands/Test.php b/app/Console/Commands/Test.php
index 2a0379f8..298a3df7 100644
--- a/app/Console/Commands/Test.php
+++ b/app/Console/Commands/Test.php
@@ -11,6 +11,7 @@ use Carbon\Carbon;
 use Illuminate\Console\Command;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Hash;
+use Illuminate\Support\Facades\Storage;
 
 class Test extends Command
 {
@@ -55,7 +56,9 @@ class Test extends Command
 //        ]);
 //        dd($r);
 //        $rep->assignCronjob();
-        $r = $rep->cronjobCheckout();
+//        $r = $rep->cronjobCheckout();
+        $disk = Storage::disk('google_dirve');
+        $r = $disk->files();
         dd($r);
     }
 
diff --git a/app/Http/Resources/InviteResource.php b/app/Http/Resources/InviteResource.php
new file mode 100644
index 00000000..840a1eb7
--- /dev/null
+++ b/app/Http/Resources/InviteResource.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Resources;
+
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class InviteResource extends JsonResource
+{
+    /**
+     * Transform the resource into an array.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return array
+     */
+    public function toArray($request)
+    {
+        return [
+            'id' => $this->id,
+            'inviter' => $this->inviter,
+            'invitee' => $this->inviter,
+            'hash' => $this->hash,
+            'time_invited' => $this->time_invited,
+            'valid' => $this->valid,
+            'valid_text' => $this->valid_text,
+            'invitee_register_uid' => $this->invitee_register_uid,
+            'invitee_register_email' => $this->invitee_register_email,
+            'invitee_register_username' => $this->invitee_register_username,
+        ];
+    }
+}
diff --git a/app/Http/Resources/UserResource.php b/app/Http/Resources/UserResource.php
index aa43a62f..9f7a8bd6 100644
--- a/app/Http/Resources/UserResource.php
+++ b/app/Http/Resources/UserResource.php
@@ -32,6 +32,7 @@ class UserResource extends JsonResource
             'seedtime_text' => mkprettytime($this->seedtime),
             'leechtime' => $this->leechtime,
             'leechtime_text' => mkprettytime($this->leechtime),
+            'invitee_code' => new InviteResource($this->whenLoaded('invitee_code')),
         ];
     }
 }
diff --git a/app/Models/Invite.php b/app/Models/Invite.php
index 3bed73e2..787621a2 100644
--- a/app/Models/Invite.php
+++ b/app/Models/Invite.php
@@ -6,7 +6,21 @@ class Invite extends NexusModel
 {
     protected $table = 'invites';
 
-    protected $fillable = [
-        'inviter', 'invitee', 'hash', 'time_invited',
+    const VALID_YES = 1;
+    const VALID_NO = 0;
+
+    public static $validInfo = [
+        self::VALID_NO => ['text' => 'No'],
+        self::VALID_YES => ['text' => 'Yes'],
     ];
+
+    protected $fillable = [
+        'inviter', 'invitee', 'hash', 'time_invited', 'valid', 'invitee_register_uid', 'invitee_register_email', 'invitee_register_username'
+    ];
+
+    public function getValidTextAttribute()
+    {
+        return self::$validInfo[$this->valid]['text'] ?? '';
+    }
+
 }
diff --git a/app/Models/User.php b/app/Models/User.php
index 359b8704..280dd335 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -134,4 +134,9 @@ class User extends Authenticatable
         return $this->belongsTo(Language::class, 'lang');
     }
 
+    public function invitee_code()
+    {
+        return $this->hasOne(Invite::class, 'invitee_register_uid');
+    }
+
 }
diff --git a/app/Providers/GoogleDriveAdapter.php b/app/Providers/GoogleDriveAdapter.php
new file mode 100644
index 00000000..18b9ab3c
--- /dev/null
+++ b/app/Providers/GoogleDriveAdapter.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Providers;
+
+class GoogleDriveAdapter extends \Hypweb\Flysystem\GoogleDrive\GoogleDriveAdapter
+{
+    public function getService()
+    {
+        return $this->service;
+    }
+}
diff --git a/app/Providers/GoogleDriveServiceProvider.php b/app/Providers/GoogleDriveServiceProvider.php
new file mode 100644
index 00000000..e8d464b1
--- /dev/null
+++ b/app/Providers/GoogleDriveServiceProvider.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Providers;
+
+use Illuminate\Support\Facades\Storage;
+use Illuminate\Support\ServiceProvider;
+
+class GoogleDriveServiceProvider extends ServiceProvider
+{
+    /**
+     * Bootstrap the application services.
+     *
+     * @return void
+     */
+    public function boot()
+    {
+        Storage::extend('google_dirve', function($app, $config) {
+            $client = new \Google_Client();
+            $client->setClientId($config['clientId']);
+            $client->setClientSecret($config['clientSecret']);
+            $client->refreshToken($config['refreshToken']);
+            $service = new \Google_Service_Drive($client);
+
+            $options = [];
+            if(isset($config['teamDriveId'])) {
+                $options['teamDriveId'] = $config['teamDriveId'];
+            }
+
+            $adapter = new GoogleDriveAdapter($service, $config['folderId'], $options);
+
+            return new \League\Flysystem\Filesystem($adapter);
+        });
+    }
+
+    /**
+     * Register the application services.
+     *
+     * @return void
+     */
+    public function register()
+    {
+        //
+    }
+}
diff --git a/app/Repositories/UserRepository.php b/app/Repositories/UserRepository.php
index 560ef52a..befe9490 100644
--- a/app/Repositories/UserRepository.php
+++ b/app/Repositories/UserRepository.php
@@ -25,7 +25,7 @@ class UserRepository extends BaseRepository
 
     public function getDetail($id)
     {
-        $user = User::query()->findOrFail($id, User::$commonFields);
+        $user = User::query()->with(['invitee_code'])->findOrFail($id, User::$commonFields);
         $userResource = new UserResource($user);
         $baseInfo = $userResource->response()->getData(true)['data'];
 
diff --git a/composer.json b/composer.json
index a2ba14b1..fa2566d7 100644
--- a/composer.json
+++ b/composer.json
@@ -36,6 +36,7 @@
         "laravel/framework": "^8.12",
         "laravel/sanctum": "^2.10",
         "laravel/tinker": "^2.5",
+        "nao-pon/flysystem-google-drive": "^1.1",
         "swiftmailer/swiftmailer": "^6.2"
     },
     "require-dev": {
diff --git a/composer.lock b/composer.lock
index 1e7b29d2..9204326f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "b775c2bbc9ad07b2efffe1afb30de056",
+    "content-hash": "3cdb39d9cebc22389a2d4654a240149e",
     "packages": [
         {
             "name": "asm89/stack-cors",
@@ -533,6 +533,66 @@
             ],
             "time": "2020-10-22T13:48:01+00:00"
         },
+        {
+            "name": "firebase/php-jwt",
+            "version": "v5.2.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/firebase/php-jwt.git",
+                "reference": "f42c9110abe98dd6cfe9053c49bc86acc70b2d23"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/f42c9110abe98dd6cfe9053c49bc86acc70b2d23",
+                "reference": "f42c9110abe98dd6cfe9053c49bc86acc70b2d23",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": ">=4.8 <=9"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Firebase\\JWT\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Neuman Vong",
+                    "email": "neuman+pear@twilio.com",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Anant Narayanan",
+                    "email": "anant@php.net",
+                    "role": "Developer"
+                }
+            ],
+            "description": "A simple library to encode and decode JSON Web Tokens (JWT) in PHP. Should conform to the current spec.",
+            "homepage": "https://github.com/firebase/php-jwt",
+            "keywords": [
+                "jwt",
+                "php"
+            ],
+            "support": {
+                "issues": "https://github.com/firebase/php-jwt/issues",
+                "source": "https://github.com/firebase/php-jwt/tree/v5.2.1"
+            },
+            "time": "2021-02-12T00:02:00+00:00"
+        },
         {
             "name": "fruitcake/laravel-cors",
             "version": "v2.0.3",
@@ -612,6 +672,191 @@
             ],
             "time": "2020-10-22T13:57:20+00:00"
         },
+        {
+            "name": "google/apiclient",
+            "version": "v2.9.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/googleapis/google-api-php-client.git",
+                "reference": "2fb6e702aca5d68203fa737f89f6f774022494c6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/googleapis/google-api-php-client/zipball/2fb6e702aca5d68203fa737f89f6f774022494c6",
+                "reference": "2fb6e702aca5d68203fa737f89f6f774022494c6",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "firebase/php-jwt": "~2.0||~3.0||~4.0||~5.0",
+                "google/apiclient-services": "~0.13",
+                "google/auth": "^1.10",
+                "guzzlehttp/guzzle": "~5.3.3||~6.0||~7.0",
+                "guzzlehttp/psr7": "^1.2",
+                "monolog/monolog": "^1.17|^2.0",
+                "php": "^5.6|^7.0|^8.0",
+                "phpseclib/phpseclib": "~2.0||^3.0.2"
+            },
+            "require-dev": {
+                "cache/filesystem-adapter": "^0.3.2|^1.1",
+                "composer/composer": "^1.10",
+                "dealerdirect/phpcodesniffer-composer-installer": "^0.7",
+                "phpcompatibility/php-compatibility": "^9.2",
+                "phpunit/phpunit": "^5.7||^8.5.13",
+                "squizlabs/php_codesniffer": "~2.3",
+                "symfony/css-selector": "~2.1",
+                "symfony/dom-crawler": "~2.1"
+            },
+            "suggest": {
+                "cache/filesystem-adapter": "For caching certs and tokens (using Google\\Client::setCache)"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Google\\": "src/"
+                },
+                "files": [
+                    "src/aliases.php"
+                ],
+                "classmap": [
+                    "src/aliases.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "Apache-2.0"
+            ],
+            "description": "Client library for Google APIs",
+            "homepage": "http://developers.google.com/api-client-library/php",
+            "keywords": [
+                "google"
+            ],
+            "support": {
+                "issues": "https://github.com/googleapis/google-api-php-client/issues",
+                "source": "https://github.com/googleapis/google-api-php-client/tree/v2.9.1"
+            },
+            "time": "2021-01-19T17:48:59+00:00"
+        },
+        {
+            "name": "google/apiclient-services",
+            "version": "v0.174.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/googleapis/google-api-php-client-services.git",
+                "reference": "004c5280f5a26a8acbb6f6af6a792e4872b7648a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/googleapis/google-api-php-client-services/zipball/004c5280f5a26a8acbb6f6af6a792e4872b7648a",
+                "reference": "004c5280f5a26a8acbb6f6af6a792e4872b7648a",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "php": ">=5.4"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.8|^5"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "Google_Service_": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "Apache-2.0"
+            ],
+            "description": "Client library for Google APIs",
+            "homepage": "http://developers.google.com/api-client-library/php",
+            "keywords": [
+                "google"
+            ],
+            "support": {
+                "issues": "https://github.com/googleapis/google-api-php-client-services/issues",
+                "source": "https://github.com/googleapis/google-api-php-client-services/tree/v0.174.0"
+            },
+            "time": "2021-05-08T11:20:03+00:00"
+        },
+        {
+            "name": "google/auth",
+            "version": "v1.15.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/googleapis/google-auth-library-php.git",
+                "reference": "4e0c9367719df9703e96f5ad613041b87742471c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/googleapis/google-auth-library-php/zipball/4e0c9367719df9703e96f5ad613041b87742471c",
+                "reference": "4e0c9367719df9703e96f5ad613041b87742471c",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "firebase/php-jwt": "~2.0|~3.0|~4.0|~5.0",
+                "guzzlehttp/guzzle": "^5.3.1|^6.2.1|^7.0",
+                "guzzlehttp/psr7": "^1.2",
+                "php": ">=5.4",
+                "psr/cache": "^1.0",
+                "psr/http-message": "^1.0"
+            },
+            "require-dev": {
+                "guzzlehttp/promises": "0.1.1|^1.3",
+                "kelvinmo/simplejwt": "^0.2.5|^0.5.1",
+                "phpseclib/phpseclib": "^2.0.31",
+                "phpunit/phpunit": "^4.8.36|^5.7",
+                "sebastian/comparator": ">=1.2.3",
+                "squizlabs/php_codesniffer": "^3.5"
+            },
+            "suggest": {
+                "phpseclib/phpseclib": "May be used in place of OpenSSL for signing strings or for token management. Please require version ^2."
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Google\\Auth\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "Apache-2.0"
+            ],
+            "description": "Google Auth Library for PHP",
+            "homepage": "http://github.com/google/google-auth-library-php",
+            "keywords": [
+                "Authentication",
+                "google",
+                "oauth2"
+            ],
+            "support": {
+                "docs": "https://googleapis.github.io/google-auth-library-php/master/",
+                "issues": "https://github.com/googleapis/google-auth-library-php/issues",
+                "source": "https://github.com/googleapis/google-auth-library-php/tree/v1.15.1"
+            },
+            "time": "2021-04-21T17:42:05+00:00"
+        },
         {
             "name": "graham-campbell/result-type",
             "version": "v1.0.1",
@@ -1497,6 +1742,63 @@
             ],
             "time": "2020-08-23T07:39:11+00:00"
         },
+        {
+            "name": "league/flysystem-cached-adapter",
+            "version": "1.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/thephpleague/flysystem-cached-adapter.git",
+                "reference": "d1925efb2207ac4be3ad0c40b8277175f99ffaff"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/thephpleague/flysystem-cached-adapter/zipball/d1925efb2207ac4be3ad0c40b8277175f99ffaff",
+                "reference": "d1925efb2207ac4be3ad0c40b8277175f99ffaff",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "league/flysystem": "~1.0",
+                "psr/cache": "^1.0.0"
+            },
+            "require-dev": {
+                "mockery/mockery": "~0.9",
+                "phpspec/phpspec": "^3.4",
+                "phpunit/phpunit": "^5.7",
+                "predis/predis": "~1.0",
+                "tedivm/stash": "~0.12"
+            },
+            "suggest": {
+                "ext-phpredis": "Pure C implemented extension for PHP"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "League\\Flysystem\\Cached\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "frankdejonge",
+                    "email": "info@frenky.net"
+                }
+            ],
+            "description": "An adapter decorator to enable meta-data caching.",
+            "support": {
+                "issues": "https://github.com/thephpleague/flysystem-cached-adapter/issues",
+                "source": "https://github.com/thephpleague/flysystem-cached-adapter/tree/master"
+            },
+            "time": "2020-07-25T15:56:04+00:00"
+        },
         {
             "name": "league/mime-type-detection",
             "version": "1.7.0",
@@ -1653,6 +1955,116 @@
             ],
             "time": "2020-12-14T13:15:25+00:00"
         },
+        {
+            "name": "nao-pon/flysystem-cached-extra",
+            "version": "1.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/nao-pon/flysystem-cached-extra.git",
+                "reference": "189abdafa0a86d92781e148ee8740ef80f4c5859"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/nao-pon/flysystem-cached-extra/zipball/189abdafa0a86d92781e148ee8740ef80f4c5859",
+                "reference": "189abdafa0a86d92781e148ee8740ef80f4c5859",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "league/flysystem-cached-adapter": "~1.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Hypweb\\Flysystem\\Cached\\Extra\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Naoki Sawada",
+                    "email": "hypweb@gmail.com"
+                }
+            ],
+            "description": "Extra traits for Flysystem cached adapter",
+            "support": {
+                "issues": "https://github.com/nao-pon/flysystem-cached-extra/issues",
+                "source": "https://github.com/nao-pon/flysystem-cached-extra/tree/master"
+            },
+            "time": "2018-02-16T01:44:38+00:00"
+        },
+        {
+            "name": "nao-pon/flysystem-google-drive",
+            "version": "1.1.13",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/nao-pon/flysystem-google-drive.git",
+                "reference": "bb812339ecf06540ed096f71403f10fcbcc590f3"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/nao-pon/flysystem-google-drive/zipball/bb812339ecf06540ed096f71403f10fcbcc590f3",
+                "reference": "bb812339ecf06540ed096f71403f10fcbcc590f3",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "google/apiclient": "^2.0",
+                "league/flysystem": "~1.0",
+                "nao-pon/flysystem-cached-extra": "~1.0",
+                "php": ">=5.4.0"
+            },
+            "require-dev": {
+                "mockery/mockery": "0.9.*",
+                "phpunit/phpunit": "~4.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-api_v2": "1.0.x-dev",
+                    "dev-master": "1.1.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Hypweb\\Flysystem\\GoogleDrive\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Naoki Sawada",
+                    "email": "hypweb@gmail.com"
+                }
+            ],
+            "description": "Flysystem adapter for Google Drive",
+            "support": {
+                "issues": "https://github.com/nao-pon/flysystem-google-drive/issues",
+                "source": "https://github.com/nao-pon/flysystem-google-drive/tree/1.1.13"
+            },
+            "time": "2020-07-30T01:26:26+00:00"
+        },
         {
             "name": "nesbot/carbon",
             "version": "2.46.0",
@@ -1873,6 +2285,135 @@
             ],
             "time": "2020-11-07T02:01:34+00:00"
         },
+        {
+            "name": "paragonie/constant_time_encoding",
+            "version": "v2.4.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/constant_time_encoding.git",
+                "reference": "f34c2b11eb9d2c9318e13540a1dbc2a3afbd939c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/constant_time_encoding/zipball/f34c2b11eb9d2c9318e13540a1dbc2a3afbd939c",
+                "reference": "f34c2b11eb9d2c9318e13540a1dbc2a3afbd939c",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "php": "^7|^8"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6|^7|^8|^9",
+                "vimeo/psalm": "^1|^2|^3|^4"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "ParagonIE\\ConstantTime\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com",
+                    "role": "Maintainer"
+                },
+                {
+                    "name": "Steve 'Sc00bz' Thomas",
+                    "email": "steve@tobtu.com",
+                    "homepage": "https://www.tobtu.com",
+                    "role": "Original Developer"
+                }
+            ],
+            "description": "Constant-time Implementations of RFC 4648 Encoding (Base-64, Base-32, Base-16)",
+            "keywords": [
+                "base16",
+                "base32",
+                "base32_decode",
+                "base32_encode",
+                "base64",
+                "base64_decode",
+                "base64_encode",
+                "bin2hex",
+                "encoding",
+                "hex",
+                "hex2bin",
+                "rfc4648"
+            ],
+            "support": {
+                "email": "info@paragonie.com",
+                "issues": "https://github.com/paragonie/constant_time_encoding/issues",
+                "source": "https://github.com/paragonie/constant_time_encoding"
+            },
+            "time": "2020-12-06T15:14:20+00:00"
+        },
+        {
+            "name": "paragonie/random_compat",
+            "version": "v9.99.100",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/random_compat.git",
+                "reference": "996434e5492cb4c3edcb9168db6fbb1359ef965a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/996434e5492cb4c3edcb9168db6fbb1359ef965a",
+                "reference": "996434e5492cb4c3edcb9168db6fbb1359ef965a",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "php": ">= 7"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "4.*|5.*",
+                "vimeo/psalm": "^1"
+            },
+            "suggest": {
+                "ext-libsodium": "Provides a modern crypto API that can be used to generate random bytes."
+            },
+            "type": "library",
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com"
+                }
+            ],
+            "description": "PHP 5.x polyfill for random_bytes() and random_int() from PHP 7",
+            "keywords": [
+                "csprng",
+                "polyfill",
+                "pseudorandom",
+                "random"
+            ],
+            "support": {
+                "email": "info@paragonie.com",
+                "issues": "https://github.com/paragonie/random_compat/issues",
+                "source": "https://github.com/paragonie/random_compat"
+            },
+            "time": "2020-10-15T08:29:30+00:00"
+        },
         {
             "name": "phpoption/phpoption",
             "version": "1.7.5",
@@ -1944,6 +2485,178 @@
             ],
             "time": "2020-07-20T17:29:33+00:00"
         },
+        {
+            "name": "phpseclib/phpseclib",
+            "version": "3.0.8",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpseclib/phpseclib.git",
+                "reference": "d9615a6fb970d9933866ca8b4036ec3407b020b6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpseclib/phpseclib/zipball/d9615a6fb970d9933866ca8b4036ec3407b020b6",
+                "reference": "d9615a6fb970d9933866ca8b4036ec3407b020b6",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "paragonie/constant_time_encoding": "^1|^2",
+                "paragonie/random_compat": "^1.4|^2.0|^9.99.99",
+                "php": ">=5.6.1"
+            },
+            "require-dev": {
+                "phing/phing": "~2.7",
+                "phpunit/phpunit": "^5.7|^6.0|^9.4",
+                "squizlabs/php_codesniffer": "~2.0"
+            },
+            "suggest": {
+                "ext-gmp": "Install the GMP (GNU Multiple Precision) extension in order to speed up arbitrary precision integer arithmetic operations.",
+                "ext-libsodium": "SSH2/SFTP can make use of some algorithms provided by the libsodium-php extension.",
+                "ext-mcrypt": "Install the Mcrypt extension in order to speed up a few other cryptographic operations.",
+                "ext-openssl": "Install the OpenSSL extension in order to speed up a wide variety of cryptographic operations."
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "phpseclib/bootstrap.php"
+                ],
+                "psr-4": {
+                    "phpseclib3\\": "phpseclib/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jim Wigginton",
+                    "email": "terrafrost@php.net",
+                    "role": "Lead Developer"
+                },
+                {
+                    "name": "Patrick Monnerat",
+                    "email": "pm@datasphere.ch",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Andreas Fischer",
+                    "email": "bantu@phpbb.com",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Hans-Jürgen Petrich",
+                    "email": "petrich@tronic-media.com",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Graham Campbell",
+                    "email": "graham@alt-three.com",
+                    "role": "Developer"
+                }
+            ],
+            "description": "PHP Secure Communications Library - Pure-PHP implementations of RSA, AES, SSH2, SFTP, X.509 etc.",
+            "homepage": "http://phpseclib.sourceforge.net",
+            "keywords": [
+                "BigInteger",
+                "aes",
+                "asn.1",
+                "asn1",
+                "blowfish",
+                "crypto",
+                "cryptography",
+                "encryption",
+                "rsa",
+                "security",
+                "sftp",
+                "signature",
+                "signing",
+                "ssh",
+                "twofish",
+                "x.509",
+                "x509"
+            ],
+            "support": {
+                "issues": "https://github.com/phpseclib/phpseclib/issues",
+                "source": "https://github.com/phpseclib/phpseclib/tree/3.0.8"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/terrafrost",
+                    "type": "github"
+                },
+                {
+                    "url": "https://www.patreon.com/phpseclib",
+                    "type": "patreon"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/phpseclib/phpseclib",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-04-19T03:20:48+00:00"
+        },
+        {
+            "name": "psr/cache",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/cache.git",
+                "reference": "d11b50ad223250cf17b86e38383413f5a6764bf8"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/cache/zipball/d11b50ad223250cf17b86e38383413f5a6764bf8",
+                "reference": "d11b50ad223250cf17b86e38383413f5a6764bf8",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Cache\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for caching libraries",
+            "keywords": [
+                "cache",
+                "psr",
+                "psr-6"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/cache/tree/master"
+            },
+            "time": "2016-08-06T20:24:11+00:00"
+        },
         {
             "name": "psr/container",
             "version": "1.1.1",
@@ -7699,7 +8412,8 @@
         "ext-gd": "*",
         "ext-json": "*",
         "ext-mbstring": "*",
-        "ext-mysqli": "*"
+        "ext-mysqli": "*",
+        "ext-xml": "*"
     },
     "platform-dev": [],
     "plugin-api-version": "2.0.0"
diff --git a/config/app.php b/config/app.php
index e2192415..27276f08 100644
--- a/config/app.php
+++ b/config/app.php
@@ -175,6 +175,8 @@ return [
         App\Providers\EventServiceProvider::class,
         App\Providers\RouteServiceProvider::class,
 
+        App\Providers\GoogleDriveServiceProvider::class,
+
     ],
 
     /*
diff --git a/config/filesystems.php b/config/filesystems.php
index 10c9d9be..877be5ea 100644
--- a/config/filesystems.php
+++ b/config/filesystems.php
@@ -51,6 +51,13 @@ return [
             'url' => env('AWS_URL'),
             'endpoint' => env('AWS_ENDPOINT'),
         ],
+        'google_dirve' => [
+            'driver' => 'google_dirve',
+            'clientId' => env('GOOGLE_DRIVE_CLIENT_ID'),
+            'clientSecret' => env('GOOGLE_DRIVE_CLIENT_SECRET'),
+            'refreshToken' => env('GOOGLE_DRIVE_REFRESH_TOKEN'),
+            'folderId' => env('GOOGLE_DRIVE_FOLDER_ID'),
+        ],
 
     ],
 
diff --git a/public/takesignup.php b/public/takesignup.php
index 9cda3c33..d04d1fe6 100644
--- a/public/takesignup.php
+++ b/public/takesignup.php
@@ -53,13 +53,13 @@ $inviter =  $_POST["inviter"];
 $code = unesc($_POST["hash"]);
 
 //check invite code
-	$sq = sprintf("SELECT id, inviter FROM invites WHERE hash ='%s'",mysql_real_escape_string($code));
+	$sq = sprintf("SELECT id, inviter FROM invites WHERE valid = %s and hash ='%s'", \App\Models\Invite::VALID_YES, mysql_real_escape_string($code));
 	$res = sql_query($sq) or sqlerr(__FILE__, __LINE__);
 	$inv = mysql_fetch_assoc($res);
 	if (!$inv)
 		bark('invalid invite code');
 	if ($inv['inviter'] != $inviter) {
-        \App\Models\Invite::query()->where('id', $inv['id'])->delete();
+        \App\Models\Invite::query()->where('id', $inv['id'])->update(['valid' => \App\Models\Invite::VALID_NO]);
         stderr(nexus_trans('nexus.invalid_argument'), nexus_trans('invite.invalid_inviter'));
         exit();
     }
@@ -192,15 +192,23 @@ EOD;
 
 if ($type == 'invite')
 {
-//don't forget to delete confirmed invitee's hash code from table invites
-sql_query("DELETE FROM invites WHERE hash = '".mysql_real_escape_string($code)."'");
-$dt = sqlesc(date("Y-m-d H:i:s"));
-$subject = sqlesc($lang_takesignup_target[get_user_lang($inviter)]['msg_invited_user_has_registered']);
-$msg = sqlesc($lang_takesignup_target[get_user_lang($inviter)]['msg_user_you_invited'].$usern.$lang_takesignup_target[get_user_lang($inviter)]['msg_has_registered']);
-//sql_query("UPDATE users SET uploaded = uploaded + 10737418240 WHERE id = $inviter"); //add 10GB to invitor's uploading credit
-sql_query("INSERT INTO messages (sender, receiver, subject, added, msg) VALUES(0, $inviter, $subject, $dt, $msg)") or sqlerr(__FILE__, __LINE__);
-$Cache->delete_value('user_'.$inviter.'_unread_message_count');
-$Cache->delete_value('user_'.$inviter.'_inbox_count');
+    //don't forget to delete confirmed invitee's hash code from table invites
+    //sql_query("DELETE FROM invites WHERE hash = '".mysql_real_escape_string($code)."'");
+    // set invalid
+    $update = [
+        'valid' => \App\Models\Invite::VALID_NO,
+        'invitee_register_uid' => $id,
+        'invitee_register_email' => $email,
+    ];
+    \App\Models\Invite::query()->where('id', $inv['id'])->update($update);
+
+    $dt = sqlesc(date("Y-m-d H:i:s"));
+    $subject = sqlesc($lang_takesignup_target[get_user_lang($inviter)]['msg_invited_user_has_registered']);
+    $msg = sqlesc($lang_takesignup_target[get_user_lang($inviter)]['msg_user_you_invited'].$usern.$lang_takesignup_target[get_user_lang($inviter)]['msg_has_registered']);
+    //sql_query("UPDATE users SET uploaded = uploaded + 10737418240 WHERE id = $inviter"); //add 10GB to invitor's uploading credit
+    sql_query("INSERT INTO messages (sender, receiver, subject, added, msg) VALUES(0, $inviter, $subject, $dt, $msg)") or sqlerr(__FILE__, __LINE__);
+    $Cache->delete_value('user_'.$inviter.'_unread_message_count');
+    $Cache->delete_value('user_'.$inviter.'_inbox_count');
 }
 
 if ($verification == 'admin'){