@andrewlwn77/s3-upload-mcp-server
Version:
Pure Node.js MCP server for uploading images to AWS S3 with high-performance validation using Sharp and file-type
106 lines • 3.96 kB
JavaScript
;
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Object.defineProperty(exports, "__esModule", { value: true });
exports.FileUtils = void 0;
const fs_1 = require("fs");
const path = __importStar(require("path"));
const uuid_1 = require("uuid");
const mimeTypes = __importStar(require("mime-types"));
class FileUtils {
static async fileExists(filePath) {
try {
await fs_1.promises.access(filePath);
return true;
}
catch {
return false;
}
}
static async getFileSize(filePath) {
const stats = await fs_1.promises.stat(filePath);
return stats.size;
}
static async readFileAsBuffer(filePath) {
return fs_1.promises.readFile(filePath);
}
static generateUniqueFilename(originalName, prefix, includeTimestamp = true) {
const ext = path.extname(originalName);
const baseName = path.basename(originalName, ext);
const parts = [];
if (prefix) {
parts.push(prefix);
}
parts.push(baseName);
if (includeTimestamp) {
const timestamp = new Date().toISOString().replace(/[:.]/g, '-');
parts.push(timestamp);
}
const uuid = (0, uuid_1.v4)().substring(0, 8);
parts.push(uuid);
return parts.join('_') + ext;
}
static getContentType(filePath) {
const mimeType = mimeTypes.lookup(filePath);
return mimeType || 'application/octet-stream';
}
static validateImageExtension(filename) {
const validExtensions = ['.jpg', '.jpeg', '.png', '.gif', '.webp', '.bmp'];
const ext = path.extname(filename).toLowerCase();
return validExtensions.includes(ext);
}
static base64ToBuffer(base64Data) {
// Remove data URL prefix if present (e.g., "data:image/jpeg;base64,")
const base64String = base64Data.replace(/^data:image\/[a-z]+;base64,/, '');
return Buffer.from(base64String, 'base64');
}
static getFileExtensionFromMimeType(mimeType) {
const extensions = {
'image/jpeg': '.jpg',
'image/jpg': '.jpg',
'image/png': '.png',
'image/gif': '.gif',
'image/webp': '.webp',
'image/bmp': '.bmp'
};
return extensions[mimeType] || '.bin';
}
static validateFilename(filename) {
// Basic validation for S3 compatible filenames
const invalidChars = /[<>:"|?*\x00-\x1f]/;
return !invalidChars.test(filename) && filename.length <= 1024;
}
}
exports.FileUtils = FileUtils;
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