implement remote snap download API #2

src/webui/api.php

@@ -0,0 +1,184 @@
+<?php
+
+// Debug
+ini_set('display_errors', '1');
+ini_set('display_startup_errors', '1');
+error_reporting(E_ALL);
+
+// Load dependencies
+require_once __DIR__ . '/../../vendor/autoload.php';
+
+// Init config
+$config = json_decode(
+    file_get_contents(
+        __DIR__ . '/../../config.json'
+    )
+);
+
+// Set headers
+header('Content-Type: application/json; charset=utf-8');
+
+// Action
+switch (!empty($_GET['action']) ? $_GET['action'] : false) {
+
+    // Snap methods
+    case 'snap':
+
+        switch (!empty($_GET['method']) ? $_GET['method'] : false) {
+
+            case 'download':
+
+                // Validate required attributes
+                switch (false)
+                {
+                    case isset($_GET['source']):
+
+                        echo json_encode(
+                            [
+                                'status'  => false,
+                                'message' => _('valid source required')
+                            ]
+                        );
+
+                    exit;
+
+                    case isset($_GET['md5url']) && preg_match('/^[a-f0-9]{32}$/', $_GET['md5url']):
+
+                        echo json_encode(
+                            [
+                                'status'  => false,
+                                'message' => _('valid md5url required')
+                            ]
+                        );
+
+                    exit;
+
+                    case isset($_GET['time']) && preg_match('/^[\d]+$/', $_GET['time']):
+
+                        echo json_encode(
+                            [
+                                'status'  => false,
+                                'message' => _('valid time required')
+                            ]
+                        );
+
+                    exit;
+                }
+
+
+                // Detect remote snap source
+                if (preg_match('/^[\d]+$/', $_GET['source']))
+                {
+                    if (!isset($config->snap->storage->remote->ftp[$_GET['source']]) || !$config->snap->storage->remote->ftp[$_GET['source']]->enabled)
+                    {
+                        echo json_encode(
+                            [
+                                'status'  => false,
+                                'message' => _('requested source not found')
+                            ]
+                        );
+
+                        exit;
+                    }
+
+                    // Connect remote
+                    $remote = new \Yggverse\Ftp\Client();
+
+                    $connection = $remote->connect(
+                        $config->snap->storage->remote->ftp[$_GET['source']]->connection->host,
+                        $config->snap->storage->remote->ftp[$_GET['source']]->connection->port,
+                        $config->snap->storage->remote->ftp[$_GET['source']]->connection->username,
+                        $config->snap->storage->remote->ftp[$_GET['source']]->connection->password,
+                        $config->snap->storage->remote->ftp[$_GET['source']]->connection->directory,
+                        $config->snap->storage->remote->ftp[$_GET['source']]->connection->timeout,
+                        $config->snap->storage->remote->ftp[$_GET['source']]->connection->passive
+                    );
+
+                    // Remote host connected
+                    if ($connection) {
+
+                        // Prepare snap path
+                        $filename = sprintf(
+                            '%s/%s.tar.gz',
+                            implode(
+                                '/',
+                                str_split(
+                                    $_GET['md5url']
+                                )
+                            ),
+                            $_GET['time']
+                        );
+
+                        // Check snap exist
+                        if (!$size = $remote->size($filename))
+                        {
+                            echo json_encode(
+                                [
+                                    'status'  => false,
+                                    'message' => _('requested snap not found')
+                                ]
+                            );
+
+                            exit;
+                        }
+
+                        // Set headers
+                        header(
+                            'Content-Type: application/tar+gzip'
+                        );
+
+                        header(
+                            sprintf(
+                                'Content-Length: %s',
+                                $size
+                            )
+                        );
+
+                        header(
+                            sprintf(
+                                'Content-Disposition: filename="%s"',
+                                basename(
+                                    $filename
+                                )
+                            )
+                        );
+
+                        // Return file
+                        $remote->get(
+                            $filename,
+                            'php://output'
+                        );
+
+                        $remote->close();
+                    }
+                }
+
+                // Local
+                else
+                {
+                    // @TODO
+                }
+
+            break;
+
+            default:
+
+                echo json_encode(
+                    [
+                        'status'  => false,
+                        'message' => _('Undefined API method')
+                    ]
+                );
+            }
+
+    break;
+
+    default:
+
+        echo json_encode(
+            [
+                'status'  => false,
+                'message' => _('Undefined API action')
+            ]
+        );
+}