Content-type: text/html Man page of dn_find

dn_find

Section: C Library Functions (3)
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NAME

dn_find - Searches for an expanded domain name  

LIBRARY

Standard C Library (libc.a)  

SYNOPSIS

#include <sys/types.h>

#include <netinet/in.h>

#include <arpa/nameser.h>

#include <resolv.h>

dn_find() (
    char *exp_domain_name,
    char *message,
    char **domain_names,
    char **end_ptr );  

PARAMETERS

Points to an expanded domain name. Points to the address of a domain name message that contains the name sought by the dn_find() function. Specifies an array of pointers to previously compressed names in the current message. Points to the end of an array of pointers. The array is indicated by the domain_names parameter.  

DESCRIPTION

The dn_find() (domain name find) function searches for an expanded domain name from a list of previously compressed names. An application program calls the dn_find() function indirectly using the dn_comp() function. If an expanded domain name is found, the dn_comp() function returns the offset from the message parameter.

The dn_find() function is one of a set of subroutines that form the resolver, a set of functions that resolves domain names. Global information used by the resolver functions resides in the _res data structure. The include/resolv.h file contains the _res data structure definition.  

RETURN VALUES

Upon successful completion, the dn_find() function returns the offset from the message parameter. Otherwise, the dn_find() function returns a value of -1.  

FILES

Defines name server and domain name structures and constants.  

RELATED INFORMATION

Functions: res_init(3), res_mkquery(3), res_send(3), dn_comp(3), dn_expand(3), _getshort(3), _getlong(3), putshort(3), putlong(3), dn_skipname(3)

Commands: named(8) delim off


 

Index

NAME
LIBRARY
SYNOPSIS
PARAMETERS
DESCRIPTION
RETURN VALUES
FILES
RELATED INFORMATION

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Time: 02:42:42 GMT, October 02, 2010