hpux man page for hosts_access

hosts_access(3) 					     Library Functions Manual						   hosts_access(3)

NAME
       hosts_access(), hosts_ctl(), request_init(), request_set() - access control library

SYNOPSIS
DESCRIPTION
       The  routines  described  here are a part of the library.  They implement a rule-based access control language with optional shell commands
       that are executed when a rule fires.

       initializes a structure with information about a client request.  updates an already initialized request structure.  Both functions take  a
       variable-length	list  of  key-value  pairs and return their first argument.  The argument lists are terminated with a zero key value.  All
       string-valued arguments are copied.  The expected keys (and corresponding value types) are:

       The file descriptor associated with the request.

       The client host name.

       A printable representation of the client network address.

       An internal representation of the client network address and port.  The
	      contents of the structure are not copied.

       The hostname associated with the server endpoint address.

       A printable representation of the server endpoint address.

       An internal representation of the server endpoint address and port.  The
	      contents of the structure are not copied.

       The name of the daemon process running on the server host.

       The name of the user on whose behalf the client host makes the request.

       consults the access control tables described in the hosts_access(5) manual page.  When internal endpoint  information  is  available,  host
       names and client user names are looked up on demand, using the request structure as a cache.  returns zero if access should be denied.

       is  a  wrapper  around  the and routines with a perhaps more convenient interface (though it does not pass on enough information to support
       automated client username lookups).  The client host address, client host name and username arguments should contain valid data or  returns
       zero if access should be denied.

       The  allow_severity  and  deny_severity variables determine how accepted and rejected requests may be logged.  They must be provided by the
       caller and may be modified by rules in the access control tables.

       The rfc931_timeout variable determines the timeout value for the client's username lookup.  It must be set with	a  positive  value  and  a
       value of 0 disables the username lookup.

RETURN VALUE
       The  and  functions  return  a pointer to the structure.  The members of the returned structure are initialized and updated with the values
       passed to the respective functions, and

       The and functions return if the access is granted and if the access is denied, for the requested service.

DIAGNOSTICS
       Problems are reported via the daemon, at and levels.

WARNINGS
       uses the library function.  This may interfere with other code that relies on

AUTHOR
       These routines were developed by

       Wietse Venema (wietse@wzv.win.tue.nl)
       Department of Mathematics and Computing Science
       Eindhoven University of Technology
       Den Dolech 2, P.O. Box 513,
       5600 MB Eindhoven, The Netherlands

FILES
       access control tables.

       access control tables.

SEE ALSO
       hosts_access(5) format of the access control tables.

       hosts_options(5) optional extensions to the base language.

																   hosts_access(3)