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143 lines
4.2 KiB
C++
143 lines
4.2 KiB
C++
// hostandport.h
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/* Copyright 2009 10gen Inc.
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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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#pragma once
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#include "sock.h"
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#include "../db/cmdline.h"
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#include "mongoutils/str.h"
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namespace mongo {
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using namespace mongoutils;
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/** helper for manipulating host:port connection endpoints.
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*/
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struct HostAndPort {
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HostAndPort() : _port(-1) { }
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/** From a string hostname[:portnumber]
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Throws user assertion if bad config string or bad port #.
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*/
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HostAndPort(string s);
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/** @param p port number. -1 is ok to use default. */
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HostAndPort(string h, int p /*= -1*/) : _host(h), _port(p) { }
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HostAndPort(const SockAddr& sock )
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: _host( sock.getAddr() ) , _port( sock.getPort() ){
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}
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static HostAndPort me() {
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return HostAndPort("localhost", cmdLine.port);
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}
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/* uses real hostname instead of localhost */
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static HostAndPort Me();
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bool operator<(const HostAndPort& r) const {
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if( _host < r._host )
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return true;
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if( _host == r._host )
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return port() < r.port();
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return false;
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}
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bool operator==(const HostAndPort& r) const {
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return _host == r._host && port() == r.port();
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}
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/* returns true if the host/port combo identifies this process instance. */
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bool isSelf() const; // defined in message.cpp
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bool isLocalHost() const;
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// @returns host:port
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string toString() const;
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operator string() const { return toString(); }
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string host() const { return _host; }
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int port() const { return _port >= 0 ? _port : CmdLine::DefaultDBPort; }
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bool hasPort() const { return _port >= 0; }
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void setPort( int port ) { _port = port; }
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private:
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// invariant (except full obj assignment):
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string _host;
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int _port; // -1 indicates unspecified
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};
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/** returns true if strings seem to be the same hostname.
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"nyc1" and "nyc1.acme.com" are treated as the same.
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in fact "nyc1.foo.com" and "nyc1.acme.com" are treated the same -
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we oly look up to the first period.
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*/
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inline bool sameHostname(const string& a, const string& b) {
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return str::before(a, '.') == str::before(b, '.');
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}
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inline HostAndPort HostAndPort::Me() {
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string h = getHostName();
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assert( !h.empty() );
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assert( h != "localhost" );
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return HostAndPort(h, cmdLine.port);
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}
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inline string HostAndPort::toString() const {
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stringstream ss;
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ss << _host;
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if ( _port != -1 ){
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ss << ':';
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#if defined(_DEBUG)
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if( _port >= 44000 && _port < 44100 ) {
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log() << "warning: special debug port 44xxx used" << endl;
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ss << _port+1;
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}
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else
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ss << _port;
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#else
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ss << _port;
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#endif
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}
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return ss.str();
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}
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inline bool HostAndPort::isLocalHost() const {
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return _host == "localhost" || startsWith(_host.c_str(), "127.") || _host == "::1";
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}
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inline HostAndPort::HostAndPort(string s) {
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const char *p = s.c_str();
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uassert(13110, "HostAndPort: bad config string", *p);
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const char *colon = strrchr(p, ':');
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if( colon ) {
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int port = atoi(colon+1);
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uassert(13095, "HostAndPort: bad port #", port > 0);
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_host = string(p,colon-p);
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_port = port;
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}
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else {
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// no port specified.
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_host = p;
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_port = -1;
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}
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}
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}
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