use webdav for files

2026-01-17 14:51:49 +01:00
parent 4c88566b01
commit ebb8a3488d
5 changed files with 1115 additions and 25 deletions
@@ -0,0 +1,822 @@
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+        "tsserver": "bin/tsserver"
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+    "node_modules/uint8array-extras": {
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+      "engines": {
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+      },
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+        "url": "https://github.com/sponsors/sindresorhus"
+      }
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+    "node_modules/undici-types": {
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+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
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+      "dev": true
+    }
+  }
+}
@@ -10,7 +10,8 @@
  },
  "dependencies": {
    "fastify": "^5.0.0",
-    "@metazla/filename-tools": "github:worph/filename-tool"
+    "@metazla/filename-tools": "github:worph/filename-tool",
+    "file-type": "^19.0.0"
  },
  "devDependencies": {
    "@types/node": "^20.0.0",
@@ -2,21 +2,24 @@
 * MetaMesh Plugin: file-info
 *
 * ============================================================================
- * PLUGIN MOUNT ARCHITECTURE - DO NOT MODIFY WITHOUT AUTHORIZATION
+ * PLUGIN FILE ACCESS ARCHITECTURE - WebDAV
 * ============================================================================
 *
- * Each plugin container has exactly 3 mounts (2 for plugins without output):
+ * Plugins access files via WebDAV served by meta-sort nginx:
 *
- *   1. /files              (READ-ONLY)  - Shared media files, read access only
- *   2. /cache              (READ-WRITE) - Plugin-specific cache folder
- *   3. /files/plugin/<id>  (READ-WRITE) - Plugin output folder (if needed)
+ *   WEBDAV_URL env var: http://meta-sort-dev/webdav
 *
- * This plugin (file-info) only requires mounts 1 and 2:
- *   - /files (RO) - to read files for type/size detection
- *   - /cache (RW) - to cache file info results
+ *   Endpoints:
+ *     GET  /webdav/watch/...   - Read media files
+ *     GET  /webdav/plugin/...  - Read plugin output
+ *     PUT  /webdav/plugin/...  - Write plugin output
+ *     HEAD /webdav/...         - Get file stats (size, mtime)
 *
- * SECURITY: Plugins must NEVER write to /files directly.
- * All write operations go to /cache or /files/plugin/<id> only.
+ * This plugin (file-info) uses:
+ *   - HEAD requests for file size
+ *   - Range GET requests for MIME type detection (magic bytes)
+ *
+ * FALLBACK: If WEBDAV_URL is not set, uses direct filesystem access.
 *
 * ============================================================================
 */
@@ -10,16 +10,63 @@
 * - sizeByte
 * - fileName
 * - extension
+ *
+ * FILE ACCESS:
+ * - Uses WebDAV client when WEBDAV_URL is set (containerized mode)
+ * - Falls back to direct filesystem access (local development)
 */

 import { promises as fs } from 'fs';
 import * as path from 'path';
+import { fileTypeFromBuffer } from 'file-type';
 import { FileType } from '@metazla/filename-tools';
 import type { PluginManifest, ProcessRequest, CallbackPayload } from './types.js';
 import { MetaCoreClient } from './meta-core-client.js';
+import { createWebDAVClient, WebDAVClient } from './webdav-client.js';

 const fileType = new FileType();

+// Initialize WebDAV client if WEBDAV_URL is set
+const webdavClient = createWebDAVClient();
+if (webdavClient) {
+    console.log('[file-info] Using WebDAV for file access');
+} else {
+    console.log('[file-info] Using direct filesystem access');
+}
+
+/**
+ * Get MIME type from file via WebDAV (reads first 4KB for magic bytes)
+ */
+async function getMimeTypeViaWebDAV(client: WebDAVClient, filePath: string): Promise<string | undefined> {
+    try {
+        // Read first 4KB for magic byte detection
+        const buffer = await client.readBytes(filePath, 0, 4095);
+        const result = await fileTypeFromBuffer(buffer);
+        return result?.mime;
+    } catch (error) {
+        console.warn(`[file-info] Failed to detect MIME type via WebDAV: ${error}`);
+        return undefined;
+    }
+}
+
+/**
+ * Get file type using MIME type and extension mappings
+ */
+async function getFileTypeViaWebDAV(client: WebDAVClient, filePath: string): Promise<string> {
+    const mimeType = await getMimeTypeViaWebDAV(client, filePath);
+    const extensionType = fileType.getFileTypeFromExtension(filePath);
+
+    if (mimeType) {
+        // Use the FileType class's mime type mapping
+        const mimeBasedType = (fileType as any).mimeTypeMappings?.[mimeType];
+        if (mimeBasedType && mimeBasedType !== 'undefined') {
+            return mimeBasedType;
+        }
+    }
+
+    return extensionType;
+}
+
 export const manifest: PluginManifest = {
    id: 'file-info',
    name: 'File Information',
@@ -71,30 +118,59 @@ export async function process(
    try {
        const { cid, filePath } = request;

-        // Get file type (video, audio, image, etc.) - matches old FileProcessor
-        const typeResult = await fileType.getFileType(filePath);
+        // Extract filename and extension (works for both filesystem and WebDAV)
+        const fileName = path.basename(filePath);
+        const extension = path.extname(filePath).slice(1).toLowerCase();
+
+        let typeResult: string | undefined;
+        let mimeType: string | undefined;
+        let fileSize: number;
+
+        if (webdavClient) {
+            // ============================================================
+            // WebDAV Mode: Access files via HTTP
+            // ============================================================
+
+            // Get file stats (size) via HTTP HEAD
+            const stats = await webdavClient.stat(filePath);
+            fileSize = stats.size;
+
+            // Get MIME type via HTTP Range request (reads first 4KB for magic bytes)
+            mimeType = await getMimeTypeViaWebDAV(webdavClient, filePath);
+
+            // Get file type from MIME type or extension
+            typeResult = await getFileTypeViaWebDAV(webdavClient, filePath);
+
+        } else {
+            // ============================================================
+            // Filesystem Mode: Direct file access (local development)
+            // ============================================================
+
+            // Get file type (video, audio, image, etc.)
+            typeResult = await fileType.getFileType(filePath);
+
+            // Get MIME type
+            mimeType = await fileType.getMimeTypeFromFile(filePath);
+
+            // Get file size
+            const stats = await fs.stat(filePath);
+            fileSize = stats.size;
+        }
+
+        // Store metadata via meta-core API
        if (typeResult) {
            await metaCore.setProperty(cid, 'fileType', typeResult);
        }
-
-        // Get MIME type - matches old FileProcessor
-        const mimeType = await fileType.getMimeTypeFromFile(filePath);
        if (mimeType) {
            await metaCore.setProperty(cid, 'mimeType', mimeType);
        }
-
-        // Get file size - matches old FileProcessor
-        const stats = await fs.stat(filePath);
-        await metaCore.setProperty(cid, 'sizeByte', String(stats.size));
-
-        // Also store filename and extension for convenience - matches old FileProcessor
-        const fileName = path.basename(filePath);
-        const extension = path.extname(filePath).slice(1).toLowerCase();
+        await metaCore.setProperty(cid, 'sizeByte', String(fileSize));
        await metaCore.setProperty(cid, 'fileName', fileName);
        await metaCore.setProperty(cid, 'extension', extension);

        const duration = Date.now() - startTime;
-        console.log(`[file-info] Processed ${fileName} in ${duration}ms`);
+        const mode = webdavClient ? 'WebDAV' : 'filesystem';
+        console.log(`[file-info] Processed ${fileName} in ${duration}ms (${mode})`);

        await sendCallback({
            taskId: request.taskId,
@@ -0,0 +1,188 @@
+/**
+ * WebDAV Client for Plugin File Access
+ *
+ * Provides HTTP-based file access to meta-sort's WebDAV endpoint.
+ * Replaces direct filesystem access for containerized plugins.
+ */
+
+export interface FileStats {
+    size: number;
+    mtime?: Date;
+}
+
+export class WebDAVClient {
+    private baseUrl: string;
+
+    constructor(baseUrl: string) {
+        // Remove trailing slash if present
+        this.baseUrl = baseUrl.replace(/\/$/, '');
+    }
+
+    /**
+     * Convert absolute file path to WebDAV URL
+     * Strips /files prefix and appends to base URL
+     */
+    private toWebDAVUrl(filePath: string): string {
+        // filePath is like "/files/watch/movie.mkv"
+        // We need to convert to "http://meta-sort-dev/webdav/watch/movie.mkv"
+        let relativePath = filePath;
+
+        // Strip /files prefix if present
+        if (relativePath.startsWith('/files/')) {
+            relativePath = relativePath.substring(6); // Remove "/files"
+        } else if (relativePath.startsWith('/files')) {
+            relativePath = relativePath.substring(6);
+        }
+
+        // Ensure path starts with /
+        if (!relativePath.startsWith('/')) {
+            relativePath = '/' + relativePath;
+        }
+
+        return this.baseUrl + relativePath;
+    }
+
+    /**
+     * Get file stats (size, mtime) via HTTP HEAD request
+     */
+    async stat(filePath: string): Promise<FileStats> {
+        const url = this.toWebDAVUrl(filePath);
+
+        const response = await fetch(url, { method: 'HEAD' });
+
+        if (!response.ok) {
+            throw new Error(`WebDAV HEAD failed for ${filePath}: ${response.status} ${response.statusText}`);
+        }
+
+        const contentLength = response.headers.get('content-length');
+        const lastModified = response.headers.get('last-modified');
+
+        return {
+            size: contentLength ? parseInt(contentLength, 10) : 0,
+            mtime: lastModified ? new Date(lastModified) : undefined,
+        };
+    }
+
+    /**
+     * Read first N bytes of a file (for magic byte detection)
+     * Uses HTTP Range request
+     */
+    async readBytes(filePath: string, start: number, end: number): Promise<Buffer> {
+        const url = this.toWebDAVUrl(filePath);
+
+        const response = await fetch(url, {
+            method: 'GET',
+            headers: {
+                'Range': `bytes=${start}-${end}`,
+            },
+        });
+
+        if (!response.ok && response.status !== 206) {
+            throw new Error(`WebDAV Range GET failed for ${filePath}: ${response.status} ${response.statusText}`);
+        }
+
+        const arrayBuffer = await response.arrayBuffer();
+        return Buffer.from(arrayBuffer);
+    }
+
+    /**
+     * Read entire file as buffer (for small files only)
+     */
+    async readFile(filePath: string): Promise<Buffer> {
+        const url = this.toWebDAVUrl(filePath);
+
+        const response = await fetch(url, { method: 'GET' });
+
+        if (!response.ok) {
+            throw new Error(`WebDAV GET failed for ${filePath}: ${response.status} ${response.statusText}`);
+        }
+
+        const arrayBuffer = await response.arrayBuffer();
+        return Buffer.from(arrayBuffer);
+    }
+
+    /**
+     * Write file via HTTP PUT
+     */
+    async writeFile(filePath: string, data: Buffer | string): Promise<void> {
+        const url = this.toWebDAVUrl(filePath);
+
+        const response = await fetch(url, {
+            method: 'PUT',
+            body: data,
+            headers: {
+                'Content-Type': 'application/octet-stream',
+            },
+        });
+
+        if (!response.ok) {
+            throw new Error(`WebDAV PUT failed for ${filePath}: ${response.status} ${response.statusText}`);
+        }
+    }
+
+    /**
+     * Create directory via HTTP MKCOL
+     */
+    async mkdir(dirPath: string): Promise<void> {
+        const url = this.toWebDAVUrl(dirPath);
+
+        const response = await fetch(url.endsWith('/') ? url : url + '/', {
+            method: 'MKCOL',
+        });
+
+        // 201 Created or 405 Method Not Allowed (already exists) are both OK
+        if (!response.ok && response.status !== 405) {
+            throw new Error(`WebDAV MKCOL failed for ${dirPath}: ${response.status} ${response.statusText}`);
+        }
+    }
+
+    /**
+     * Check if file exists via HTTP HEAD
+     */
+    async exists(filePath: string): Promise<boolean> {
+        const url = this.toWebDAVUrl(filePath);
+
+        try {
+            const response = await fetch(url, { method: 'HEAD' });
+            return response.ok;
+        } catch {
+            return false;
+        }
+    }
+
+    /**
+     * List directory contents via HTTP GET (returns JSON from nginx autoindex)
+     */
+    async readdir(dirPath: string): Promise<string[]> {
+        const url = this.toWebDAVUrl(dirPath);
+        const finalUrl = url.endsWith('/') ? url : url + '/';
+
+        const response = await fetch(finalUrl, {
+            method: 'GET',
+            headers: {
+                'Accept': 'application/json',
+            },
+        });
+
+        if (!response.ok) {
+            throw new Error(`WebDAV GET (dir) failed for ${dirPath}: ${response.status} ${response.statusText}`);
+        }
+
+        const entries = await response.json() as Array<{ name: string; type: string }>;
+        return entries.map(e => e.name);
+    }
+}
+
+/**
+ * Create a WebDAV client from environment variables
+ */
+export function createWebDAVClient(): WebDAVClient | null {
+    const webdavUrl = process.env.WEBDAV_URL;
+
+    if (!webdavUrl) {
+        console.warn('[webdav-client] WEBDAV_URL not set, WebDAV client unavailable');
+        return null;
+    }
+
+    return new WebDAVClient(webdavUrl);
+}