83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
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/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "android-base/parsenetaddress.h"
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#include <algorithm>
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#include "android-base/stringprintf.h"
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#include "android-base/strings.h"
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namespace android {
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namespace base {
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bool ParseNetAddress(const std::string& address, std::string* host, int* port,
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std::string* canonical_address, std::string* error) {
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host->clear();
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bool ipv6 = true;
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bool saw_port = false;
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size_t colons = std::count(address.begin(), address.end(), ':');
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size_t dots = std::count(address.begin(), address.end(), '.');
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std::string port_str;
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if (address[0] == '[') {
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// [::1]:123
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if (address.rfind("]:") == std::string::npos) {
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*error = StringPrintf("bad IPv6 address '%s'", address.c_str());
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return false;
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}
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*host = address.substr(1, (address.find("]:") - 1));
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port_str = address.substr(address.rfind("]:") + 2);
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saw_port = true;
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} else if (dots == 0 && colons >= 2 && colons <= 7) {
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// ::1
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*host = address;
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} else if (colons <= 1) {
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// 1.2.3.4 or some.accidental.domain.com
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ipv6 = false;
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std::vector<std::string> pieces = Split(address, ":");
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*host = pieces[0];
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if (pieces.size() > 1) {
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port_str = pieces[1];
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saw_port = true;
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}
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}
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if (host->empty()) {
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*error = StringPrintf("no host in '%s'", address.c_str());
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return false;
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}
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if (saw_port) {
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if (sscanf(port_str.c_str(), "%d", port) != 1 || *port <= 0 ||
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*port > 65535) {
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*error = StringPrintf("bad port number '%s' in '%s'", port_str.c_str(),
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address.c_str());
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return false;
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}
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}
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if (canonical_address != nullptr) {
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*canonical_address =
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StringPrintf(ipv6 ? "[%s]:%d" : "%s:%d", host->c_str(), *port);
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}
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return true;
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}
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} // namespace base
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} // namespace android
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