71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
/*************************************************************************\
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* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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* EPICS BASE Versions 3.13.7
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* and higher are distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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\*************************************************************************/
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/*
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*
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*
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* L O S A L A M O S
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* Los Alamos National Laboratory
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* Los Alamos, New Mexico 87545
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*
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* Copyright, 1986, The Regents of the University of California.
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*
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*
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* Author Jeffrey O. Hill
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* johill@lanl.gov
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*/
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#define epicsAssertAuthor "Jeff Hill johill@lanl.gov"
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#include <string.h>
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#include "hostNameCache.h"
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#include "epicsGuard.h"
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hostNameCache::hostNameCache ( const osiSockAddr & addr, ipAddrToAsciiEngine & engine ) :
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dnsTransaction ( engine.createTransaction() ), ioComplete ( false )
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{
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this->dnsTransaction.ipAddrToAscii ( addr, *this );
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}
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void hostNameCache::destroy ()
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{
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delete this;
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}
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hostNameCache::~hostNameCache ()
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{
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this->dnsTransaction.release ();
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}
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void hostNameCache::transactionComplete ( const char *pHostNameIn )
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{
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epicsGuard < epicsMutex > guard ( this->mutex );
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if ( ! this->ioComplete ) {
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this->ioComplete = true;
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strncpy ( this->hostNameBuf, pHostNameIn, sizeof ( this->hostNameBuf ) );
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this->hostNameBuf[ sizeof ( this->hostNameBuf ) - 1 ] = '\0';
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}
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}
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void hostNameCache::hostName ( char *pBuf, unsigned bufSize ) const
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{
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epicsGuard < epicsMutex > guard ( this->mutex );
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if ( this->ioComplete ) {
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strncpy ( pBuf, this->hostNameBuf, bufSize);
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pBuf [ bufSize - 1u ] = '\0';
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}
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else {
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osiSockAddr tmpAddr = this->dnsTransaction.address ();
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sockAddrToDottedIP ( &tmpAddr.sa, pBuf, bufSize );
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}
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}
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