ares_parse_ptr_reply(3)

Parse a reply to a DNS query of type PTR into a hostent

Section 3 libc-ares-dev bookworm source

Description

ARES_PARSE_PTR_REPLY

NAME

ares_parse_ptr_reply - Parse a reply to a DNS query of type PTR into a hostent

SYNOPSIS

#include <ares.h>

int ares_parse_ptr_reply(const unsigned char *abuf, int alen,

const void *addr, int addrlen, int family,

struct hostent **host);

DESCRIPTION

The ares_parse_ptr_reply function parses the response to a query of type PTR into a struct hostent. The parameters abuf and alen give the contents of the response. The parameters addr, addrlen, and family specify which address was queried for; they are not used to verify the response, merely used to fill in the address of the struct hostent. The resulting struct hostent is stored in allocated memory and a pointer to it stored into the variable pointed to by host. It is the caller’s responsibility to free the resulting host structure using ares_free_hostent(3) when it is no longer needed.

RETURN VALUES

ares_parse_ptr_reply can return any of the following values:

	ARES_SUCCESS		The response was successfully parsed.
	ARES_EBADRESP		The response was malformatted.
	ARES_ENODATA		The response did not contain an answer to the query.
	ARES_ENOMEM		Memory was exhausted.

AUTHOR

Greg Hudson, MIT Information Systems
Copyright 1998 by the Massachusetts Institute of Technology.