/usr/include/wvstreams/wvresolver.h is in libwvstreams-dev 4.6.1-12~deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | /* -*- Mode: C++ -*-
* Worldvisions Weaver Software:
* Copyright (C) 1997-2002 Net Integration Technologies, Inc.
*
* DNS name resolver with support for background lookups.
*/
#ifndef __WVRESOLVER_H
#define __WVRESOLVER_H
#include "wvaddr.h"
#include "wvstream.h"
#include "wvlinklist.h"
#include "wvhashtable.h"
class WvResolverHost;
class WvResolverAddr;
DeclareWvDict(WvResolverHost, WvString, name);
DeclareWvDict(WvResolverAddr, WvIPAddr, addr[0]);
DeclareWvList(WvIPAddr);
/** ASynchronous DNS resolver functions, so that we can do non-blocking lookups */
class WvResolver
{
static int numresolvers;
static WvResolverHostDict *hostmap;
static WvResolverAddrDict *addrmap;
public:
WvResolver();
~WvResolver();
/**
* Return -1 on timeout, or the number of addresses found, which may
* be 0 if the address does not exist.
* addrlist, if present, has to be an initialized list.
* addr points to an internal WvIPAddr and will be deleted automatically.
*/
int findaddr(int msec_timeout, WvStringParm name,
WvIPAddr const **addr, WvIPAddrList *addrlist = NULL);
int findname(int msec_timeout, WvIPAddr *ipaddr, char **name);
void clearhost(WvStringParm hostname);
/** add all of our waiting fds to an fd_set for use with select(). */
void pre_select(WvStringParm hostname, WvStream::SelectInfo &si);
/** determines whether the resolving process is complete. */
bool post_select(WvStringParm hostname, WvStream::SelectInfo &si);
};
#endif // __WVRESOLVER_H
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