initial version

har-extractor.js

@@ -0,0 +1,40 @@
+#!/usr/bin/env node
+
+import { readFileSync, mkdirSync, writeFileSync, utimesSync } from 'node:fs';
+
+if (process.argv.length < 3) {
+	console.log('Arguments: <file.har>...');
+	process.exit(1);
+}
+
+for (const har_path of process.argv.slice(2)) {
+	const dest = har_path.slice(0, har_path.lastIndexOf('.'));
+	const har = JSON.parse(readFileSync(har_path));
+	for (const entry of har.log.entries) {
+		if (entry.request.method !== 'GET' || entry.response.status !== 200) {
+			console.log(`Skipping: ${entry.request.method} ${entry.request.url} ${entry.response.status}`);
+			continue;
+		}
+		let path = decodeURI(entry.request.url.slice(entry.request.url.indexOf('://') + 3).replace(/\?.*/, ''));
+		mkdirSync(dest + '/' + path.slice(0, path.lastIndexOf('/')), { recursive: true });
+		if (path.endsWith('/')) {
+			path += '__' + encodeURIComponent(entry.response.headers.find((_) => _.name.toLowerCase() === 'content-type')?.value);
+			console.log(`Using fallback for filename: ${path}`);
+		}
+		if (entry.response.content.text == null) {
+			console.log(`No content: ${path}`);
+			continue;
+		}
+		const content = Buffer.from(entry.response.content.text, entry.response.content.encoding);
+		if (entry.response.content.size !== content.length) {
+			console.log(`Mismatched size: ${path} (declared: ${entry.response.content.size}, actual: ${content.length})`);
+		}
+		writeFileSync(dest + '/' + path, content);
+		const last_modified_header = entry.response.headers.find((_) => _.name.toLowerCase() === 'last-modified')?.value;
+		if (last_modified_header) {
+			utimesSync(dest + '/' + path, new Date(last_modified_header), new Date(last_modified_header));
+		} else {
+			console.log(`No Last-Modified header: ${path}`);
+		}
+	}
+}

package.json

@@ -0,0 +1,3 @@
+{
+	"type": "module"
+}