blessing-skin-server/app/Http/Controllers/TextureController.php

<?php

namespace App\Http\Controllers;

use App\Events\GetAvatarPreview;
use App\Events\GetSkinPreview;
use App\Models\Player;
use App\Models\Texture;
use App\Models\User;
use App\Services\Minecraft;
use Carbon\Carbon;
use Event;
use Exception;
use Illuminate\Support\Arr;
use Option;
use Response;
use Storage;
use Symfony\Component\HttpFoundation\Response as SymfonyResponse;

class TextureController extends Controller
{
    public function json($player_name, $api = '')
    {
        $player = $this->getPlayerInstance($player_name);

        if ($api == 'csl') {
            $content = $player->getJsonProfile(Player::CSL_API);
        } elseif ($api == 'usm') {
            $content = $player->getJsonProfile(Player::USM_API);
        } else {
            $content = $player->getJsonProfile(option('api_type'));
        }

        return response($content, 200, [
            'Content-type' => 'application/json',
            'Last-Modified' => $player->last_modified,
        ]);
    }

    public function jsonWithApi($api, $player_name)
    {
        return $this->json($player_name, $api);
    }

    public function texture($hash, $headers = [], $message = '')
    {
        try {
            if (Storage::disk('textures')->has($hash)) {
                return $this->outputImage(Storage::disk('textures')->get($hash), array_merge([
                    'Last-Modified' => Storage::disk('textures')->lastModified($hash),
                    'Accept-Ranges' => 'bytes',
                    'Content-Length' => Storage::disk('textures')->size($hash),
                ], $headers));
            }
        } catch (Exception $e) {
            report($e);
        }

        return abort(404, $message);
    }

    public function textureWithApi($api, $hash)
    {
        return $this->texture($hash);
    }

    public function avatarByTid($tid, $size = 128)
    {
        if ($t = Texture::find($tid)) {
            try {
                if (Storage::disk('textures')->has($t->hash)) {
                    $responses = event(new GetAvatarPreview($t, $size));

                    if (isset($responses[0]) && $responses[0] instanceof SymfonyResponse) {
                        return $responses[0];       // @codeCoverageIgnore
                    } else {
                        $png = Minecraft::generateAvatarFromSkin(
                            Storage::disk('textures')->read($t->hash), $size
                        );

                        return $this->outputImage(png($png));
                    }
                }
            } catch (Exception $e) {
                report($e);
            }
        }

        return response()->file(storage_path('static_textures/avatar.png'));
    }

    public function avatar($uid, $size = 128)
    {
        $user = User::find($uid);

        if ($user) {
            return $this->avatarByTid($user->avatar, $size);
        }

        return response()->file(storage_path('static_textures/avatar.png'));
    }

    public function preview($tid, $size = 250)
    {
        if ($t = Texture::find($tid)) {
            try {
                if (Storage::disk('textures')->has($t->hash)) {
                    $responses = event(new GetSkinPreview($t, $size));

                    if (isset($responses[0]) && $responses[0] instanceof \Symfony\Component\HttpFoundation\Response) {
                        return $responses[0];      // @codeCoverageIgnore
                    } else {
                        $binary = Storage::disk('textures')->read($t->hash);

                        if ($t->type == 'cape') {
                            $png = Minecraft::generatePreviewFromCape(
                                $binary, $size * 0.8, $size * 1.125, $size
                            );
                        } else {
                            $png = Minecraft::generatePreviewFromSkin(
                                $binary, $size, ($t->type == 'alex'), 'both', 4
                            );
                        }

                        return $this->outputImage(png($png));
                    }
                }
            } catch (Exception $e) {
                report($e);
            }
        }

        // Show this if given texture is invalid.
        return response()->file(storage_path('static_textures/broken.png'));
    }

    public function raw($tid)
    {
        abort_unless(option('allow_downloading_texture'), 404);

        return ($t = Texture::find($tid))
            ? $this->texture($t->hash)
            : abort(404, trans('skinlib.non-existent'));
    }

    public function avatarByPlayer($size, $name)
    {
        $player = Player::where('name', $name)->first();
        abort_unless($player, 404);

        $hash = $player->getTexture('skin');
        if (Storage::disk('textures')->has($hash)) {
            $png = Minecraft::generateAvatarFromSkin(
                Storage::disk('textures')->read($hash),
                $size
            );

            return $this->outputImage(png($png));
        }

        return abort(404);
    }

    protected function outputImage($content, $headers = [])
    {
        $request = request();

        $ifNoneMatch = $request->header('If-None-Match');
        $eTag = md5($content);

        $ifModifiedSince = Carbon::parse($request->header('If-Modified-Since', 0));
        $lastModified = Carbon::parse(Arr::pull($headers, 'Last-Modified', time()));

        if ($eTag === $ifNoneMatch || $lastModified <= $ifModifiedSince) {
            return response(null)->withHeaders($headers)->setNotModified();
        }

        return response($content, 200, $headers)->withHeaders([
            'Content-Type' => 'image/png',
            'ETag' => $eTag,
            'Last-Modified' => $lastModified->toRfc7231String(),
            'Cache-Control' => 'max-age='.option('cache_expire_time').', public',
        ]);
    }

    protected function getPlayerInstance($player_name)
    {
        $player = Player::where('name', $player_name)->first();
        abort_if($player->isBanned(), 403, trans('general.player-banned'));

        return $player;
    }

    /**
     * Default steve skin, base64 encoded.
     *
     * @see https://minecraft.gamepedia.com/File:Steve_skin.png
     *
     * @return string
     */
    public static function getDefaultSteveSkin()
    {
        return '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';
    }
}