127 lines
4.3 KiB
Dart
127 lines
4.3 KiB
Dart
import 'dart:convert';
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import 'package:webview_flutter/webview_flutter.dart';
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import '../../services/diagnostic_log.dart';
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/// Convert errors into fixed labels; never export the original console text.
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String? schoolConsoleCode(String message) {
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final text = message.toLowerCase();
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if (text.contains('mixed content')) return 'mixed_content';
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if (text.contains('content security policy')) {
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return 'content_security_policy';
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}
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if (text.contains('cors')) return 'cross_origin';
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if (text.contains('refused to')) return 'resource_refused';
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if (text.contains('referenceerror')) {
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if (RegExp(r'(?:jquery|\$) is not defined').hasMatch(text)) {
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return 'jquery_missing';
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}
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if (text.contains('beangle is not defined')) return 'beangle_missing';
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if (text.contains('require is not defined')) return 'require_missing';
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return 'reference_error';
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}
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if (text.contains('syntaxerror')) return 'syntax_error';
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if (text.contains('typeerror')) return 'type_error';
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if (text.contains('securityerror')) return 'security_error';
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if (text.contains('evalerror')) return 'eval_error';
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if (text.contains('rangeerror')) return 'range_error';
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return null;
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}
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// Counts and known library booleans only. This never reads text, forms, cookies,
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// storage, or resource URLs. A different document or login form returns null.
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const schoolPageDiagnosticsScript = r'''(() => {
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if(location.href!==__EXPECTED_URL__ || document.querySelector('input[type="password"]'))return 'null';
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const links=Array.from(document.querySelectorAll('link[rel~="stylesheet"]'));
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const resources=performance.getEntriesByType('resource');
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return JSON.stringify({scripts:document.scripts.length,styles:document.styleSheets.length,
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links:links.length,loaded:links.filter(link=>link.sheet!==null).length,
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jquery:typeof window.jQuery==='function',beangle:window.beangle!==null && typeof window.beangle==='object',
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require:typeof window.require==='function',
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script202:resources.filter(r=>r.initiatorType==='script' && r.responseStatus===202).length,
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style202:resources.filter(r=>r.initiatorType==='link' && r.responseStatus===202).length});
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})()''';
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void recordSchoolPageState(DiagnosticLog log, String school, Object raw) {
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dynamic value = raw;
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try {
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for (var i = 0; i < 2 && value is String; i++) {
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value = jsonDecode(value);
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}
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if (value is! Map) return;
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const counts = [
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'scripts',
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'styles',
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'links',
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'loaded',
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'script202',
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'style202',
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];
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const libraries = ['jquery', 'beangle', 'require'];
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if (counts.any(
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(key) => value[key] is! int || value[key] < 0 || value[key] > 100000,
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) ||
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libraries.any((key) => value[key] is! bool)) {
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return;
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}
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for (final key in counts) {
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if ((key == 'script202' || key == 'style202') && value[key] == 0) {
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continue;
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}
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log.add(
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'school_asset_state',
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fields: {
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'school': school,
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'code': key == 'script202'
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? 'script_202'
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: key == 'style202'
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? 'stylesheet_202'
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: key,
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'count': value[key] as int,
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},
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);
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}
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if (school == 'undergraduate') {
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for (final key in libraries) {
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log.add(
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'school_library_state',
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fields: {'school': school, 'code': key, 'result': value[key] as bool},
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);
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}
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}
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} catch (_) {
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/* Diagnostics must not interfere with the school page. */
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}
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}
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Future<void> recordSchoolPageDiagnostics(
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WebViewController web,
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String school,
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String url, {
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bool Function()? isCurrent,
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}) async {
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final uri = Uri.tryParse(url);
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if (uri == null ||
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uri.scheme != 'https' ||
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!const {'eams.uestc.edu.cn', 'yjsjy.uestc.edu.cn'}.contains(uri.host)) {
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return;
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}
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try {
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if (isCurrent?.call() == false) return;
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if (await web.currentUrl() != url || isCurrent?.call() == false) return;
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final raw = await web.runJavaScriptReturningResult(
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schoolPageDiagnosticsScript.replaceAll(
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'__EXPECTED_URL__',
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jsonEncode(url),
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),
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);
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if (await web.currentUrl() != url || isCurrent?.call() == false) {
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return;
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}
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recordSchoolPageState(DiagnosticLog.instance, school, raw);
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} catch (_) {
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/* No original exceptions or page data enter the log. */
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}
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}
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