mirror of
https://github.com/klzgrad/naiveproxy.git
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112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
// Copyright (c) 2010 The Chromium 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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#include "net/base/host_mapping_rules.h"
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#include "base/logging.h"
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#include "base/strings/pattern.h"
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#include "base/strings/string_split.h"
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#include "base/strings/string_tokenizer.h"
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#include "base/strings/string_util.h"
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#include "net/base/host_port_pair.h"
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#include "net/base/url_util.h"
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namespace net {
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struct HostMappingRules::MapRule {
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MapRule() : replacement_port(-1) {}
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std::string hostname_pattern;
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std::string replacement_hostname;
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int replacement_port;
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};
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struct HostMappingRules::ExclusionRule {
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std::string hostname_pattern;
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};
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HostMappingRules::HostMappingRules() = default;
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HostMappingRules::HostMappingRules(const HostMappingRules& host_mapping_rules) =
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default;
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HostMappingRules::~HostMappingRules() = default;
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HostMappingRules& HostMappingRules::operator=(
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const HostMappingRules& host_mapping_rules) = default;
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bool HostMappingRules::RewriteHost(HostPortPair* host_port) const {
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// Check if the hostname was remapped.
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for (const auto& rule : map_rules_) {
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// The rule's hostname_pattern will be something like:
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// www.foo.com
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// *.foo.com
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// www.foo.com:1234
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// *.foo.com:1234
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// First, we'll check for a match just on hostname.
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// If that fails, we'll check for a match with both hostname and port.
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if (!base::MatchPattern(host_port->host(), rule.hostname_pattern)) {
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std::string host_port_string = host_port->ToString();
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if (!base::MatchPattern(host_port_string, rule.hostname_pattern))
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continue; // This rule doesn't apply.
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}
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// Check if the hostname was excluded.
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for (const auto& rule : exclusion_rules_) {
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if (base::MatchPattern(host_port->host(), rule.hostname_pattern))
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return false;
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}
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host_port->set_host(rule.replacement_hostname);
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if (rule.replacement_port != -1)
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host_port->set_port(static_cast<uint16_t>(rule.replacement_port));
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return true;
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}
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return false;
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}
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bool HostMappingRules::AddRuleFromString(const std::string& rule_string) {
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std::vector<std::string> parts =
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base::SplitString(base::TrimWhitespaceASCII(rule_string, base::TRIM_ALL),
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" ", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
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// Test for EXCLUSION rule.
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if (parts.size() == 2 && base::LowerCaseEqualsASCII(parts[0], "exclude")) {
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ExclusionRule rule;
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rule.hostname_pattern = base::ToLowerASCII(parts[1]);
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exclusion_rules_.push_back(rule);
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return true;
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}
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// Test for MAP rule.
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if (parts.size() == 3 && base::LowerCaseEqualsASCII(parts[0], "map")) {
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MapRule rule;
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rule.hostname_pattern = base::ToLowerASCII(parts[1]);
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if (!ParseHostAndPort(parts[2], &rule.replacement_hostname,
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&rule.replacement_port)) {
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return false; // Failed parsing the hostname/port.
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}
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map_rules_.push_back(rule);
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return true;
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}
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return false;
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}
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void HostMappingRules::SetRulesFromString(const std::string& rules_string) {
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exclusion_rules_.clear();
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map_rules_.clear();
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base::StringTokenizer rules(rules_string, ",");
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while (rules.GetNext()) {
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bool ok = AddRuleFromString(rules.token());
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LOG_IF(ERROR, !ok) << "Failed parsing rule: " << rules.token();
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}
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}
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} // namespace net
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