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101 lines
3.0 KiB
C++
101 lines
3.0 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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namespace mongo {
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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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HostAndPort(string h, int p = -1) : _host(h), _port(p) { }
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static HostAndPort me() {
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return HostAndPort("localhost", cmdLine.port);
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}
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static HostAndPort fromString(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 = strchr(p, ':');
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HostAndPort m;
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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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return HostAndPort(string(p,colon-p),port);
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}
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// no port specified.
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return HostAndPort(p, cmdLine.port);
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}
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bool operator<(const HostAndPort& r) const { return _host < r._host || (_host==r._host&&_port<r._port); }
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/* returns true if the host/port combo identifies this process instance. */
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bool isSelf() const;
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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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string host() const { return _host; }
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int port() const { return _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 share a common starting prefix */
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inline bool sameStart(const char *p, const char *q) {
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while( 1 ) {
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if( *p == 0 || *q == 0 )
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return true;
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if( *p != *q )
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break;
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p++; q++;
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}
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return false;
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}
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inline bool HostAndPort::isSelf() const {
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int p = _port == -1 ? CmdLine::DefaultDBPort : _port;
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if( p != cmdLine.port )
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return false;
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assert( _host != "localhost" && _host != "127.0.0.1" );
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return sameStart(getHostName().c_str(), _host.c_str());
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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 ) ss << ':' << _port;
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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" || _host == "127.0.0.1";
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}
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}
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