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1709c884aa
Sources under `packages/flutter_tools/` aren't accessible to the average Flutter user by navigating through sources from their projects, so it doesn't need to be as explicitly verbose with types for readability purposes. The `always_specify_types` lint results in extremely verbose code within the tool which adds little value. This change disables `always_specify_types` in favor of a new set of lints that aim to reduce verbosity by removing obvious types while also maintaining readability in cases where variable types otherwise wouldn't be obvious: - `omit_obvious_local_variable_types` - `omit_obvious_property_types` - `specify_nonobvious_local_variable_types` - `specify_nonobvious_property_types`
72 lines
2.8 KiB
Dart
72 lines
2.8 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'base/io.dart';
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import 'base/platform.dart';
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import 'doctor_validator.dart';
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/// A validator that displays configured HTTP_PROXY environment variables.
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///
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/// if the `HTTP_PROXY` environment variable is non-empty, the contents are
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/// validated along with `NO_PROXY`.
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class ProxyValidator extends DoctorValidator {
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ProxyValidator({required Platform platform})
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: shouldShow = _getEnv('HTTP_PROXY', platform).isNotEmpty,
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_httpProxy = _getEnv('HTTP_PROXY', platform),
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_noProxy = _getEnv('NO_PROXY', platform),
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super('Proxy Configuration');
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final bool shouldShow;
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final String _httpProxy;
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final String _noProxy;
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/// Gets a trimmed, non-null environment variable. If the variable is not set
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/// an empty string will be returned. Checks for the lowercase version of the
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/// environment variable first, then uppercase to match Dart's HTTP implementation.
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static String _getEnv(String key, Platform platform) =>
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platform.environment[key.toLowerCase()]?.trim() ??
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platform.environment[key.toUpperCase()]?.trim() ??
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'';
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@override
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Future<ValidationResult> validateImpl() async {
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if (_httpProxy.isEmpty) {
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return ValidationResult(ValidationType.success, const <ValidationMessage>[]);
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}
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final messages = <ValidationMessage>[const ValidationMessage('HTTP_PROXY is set')];
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if (_noProxy.isEmpty) {
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messages.add(const ValidationMessage.hint('NO_PROXY is not set'));
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} else {
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messages.add(ValidationMessage('NO_PROXY is $_noProxy'));
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final Set<String> proxyHosts = _noProxy.split(',').map((String e) => e.trim()).toSet();
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final List<String> loopbackAddresses = await _getLoopbackAddresses();
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for (final host in loopbackAddresses) {
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if (proxyHosts.contains(host)) {
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messages.add(ValidationMessage('NO_PROXY contains $host'));
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} else {
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messages.add(ValidationMessage.hint('NO_PROXY does not contain $host'));
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}
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}
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}
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final bool hasIssues = messages.any((ValidationMessage msg) => msg.isHint || msg.isError);
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return ValidationResult(hasIssues ? ValidationType.partial : ValidationType.success, messages);
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}
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Future<List<String>> _getLoopbackAddresses() async {
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final List<NetworkInterface> networkInterfaces = await listNetworkInterfaces(
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includeLinkLocal: true,
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includeLoopback: true,
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);
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return <String>[
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'localhost',
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for (final NetworkInterface networkInterface in networkInterfaces)
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for (final InternetAddress internetAddress in networkInterface.addresses)
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if (internetAddress.isLoopback) internetAddress.address,
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];
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}
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}
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