NAME¶
Authen::Radius - provide simple Radius client facilities
SYNOPSIS¶
use Authen::Radius;
$r = new Authen::Radius(Host => 'myserver', Secret => 'mysecret');
print "auth result=", $r->check_pwd('myname', 'mypwd'), "\n";
$r = new Authen::Radius(Host => 'myserver', Secret => 'mysecret');
Authen::Radius->load_dictionary();
$r->add_attributes (
{ Name => 'User-Name', Value => 'myname' },
{ Name => 'Password', Value => 'mypwd' },
# RFC 2865 http://www.ietf.org/rfc/rfc2865.txt calls this attribute
# User-Password. Check your local RADIUS dictionary to find
# out which name is used on your system
# { Name => 'User-Password', Value => 'mypwd' },
{ Name => 'h323-return-code', Value => '0' }, # Cisco AV pair
{ Name => 'Digest-Attributes', Value => { Method => 'REGISTER' } }
);
$r->send_packet(ACCESS_REQUEST) and $type = $r->recv_packet();
print "server response type = $type\n";
for $a ($r->get_attributes()) {
print "attr: name=$a->{'Name'} value=$a->{'Value'}\n";
}
DESCRIPTION¶
The "Authen::Radius" module provides a simple class that allows you to
send/receive Radius requests/responses to/from a Radius server.
CONSTRUCTOR¶
- new ( Host => HOST, Secret => SECRET [, TimeOut =>
TIMEOUT] [,Service => SERVICE] [, Debug => Bool] [, LocalAddr =>
hostname[:port]] [,Rfc3579MessageAuth => Bool] [,NodeList=
NodeListArrayRef])
- Creates & returns a blessed reference to a Radius
object, or undef on failure. Error status may be retrieved with
"Authen::Radius::get_error" (errorcode) or
"Authen::Radius::strerror" (verbose error string).
The default "Service" is "radius", the alternative is
"radius-acct". If you do not specify port in the
"Host" as a "hostname:port", then port specified in
your /etc/services will be used. If there is nothing there, and you
did not specify port either then default is 1812 for "radius"
and 1813 for "radius-acct".
Optional parameter "Debug" with a Perl "true" value
turns on debugging (verbose mode).
Optional parameter "LocalAddr" may contain local IP/host bind
address from which RADIUS packets are sent.
Optional parameter "Rfc3579MessageAuth" with a Perl
"true" value turns on generating of Message-Authenticator for
Access-Request (RFC3579, section 3.2).
Optional parameter "NodeList" may contain a Perl reference to an
array, containing a list of Radius Cluster nodes. Each nodes in the list
can be specified using a hostname or IP (with an optional port number),
i.e. 'radius1.mytel.com' or 'radius.myhost.com:1812'. Radius Cluster
contains a set of Radius servers, at any given moment of time only one
server is considered to be "active" (so requests are send to
this server). How the active node is determined? Initially in addition to
the "NodeList" parameter you may supply the "Host"
parameter and specify which server should become the first active node. If
this parameter is absent, or the current active node does not reply
anymore, the process of "discovery" will be performed: a request
will be sent to all nodes and the consecutive communication continues with
the node, which will be the first to reply.
METHODS¶
- load_dictionary ( [ DICTIONARY ] )
- Loads the definitions in the specified Radius dictionary
file (standard Livingston radiusd format). Tries to load
'"/etc/raddb/dictionary"' when no argument is specified, or
dies. NOTE: you need to load valid dictionary if you plan to send RADIUS
requests with attributes other than just
"User-Name"/"Password".
- check_pwd ( USERNAME, PASSWORD [,NASIPADDRESS] )
- Checks with the RADIUS server if the specified
"PASSWORD" is valid for user "USERNAME". Unless
"NASIPADDRESS" is specified, the script will attempt to
determine it's local IP address (IP address for the RADIUS socket) and
this value will be placed in the NAS-IP-Address attribute. This method is
actually a wrapper for subsequent calls to "clear_attributes",
"add_attributes", "send_packet" and
"recv_packet". It returns 1 if the "PASSWORD" is
correct, or undef otherwise.
- add_attributes ( { Name => NAME, Value => VALUE [,
Type => TYPE] [, Vendor => VENDOR] }, ... )
- Adds any number of Radius attributes to the current Radius
object. Attributes are specified as a list of anon hashes. They may be
"Name"d with their dictionary name (provided a dictionary has
been loaded first), or with their raw Radius attribute-type values. The
"Type" pair should be specified when adding attributes that are
not in the dictionary (or when no dictionary was loaded). Values for
"TYPE" can be '"string"', '"integer"',
'"ipaddr"' or '"avpair"'.
- get_attributes
- Returns a list of references to anon hashes with the
following key/value pairs : { Name => NAME, Code => RAWTYPE, Value
=> VALUE, RawValue => RAWVALUE, Vendor => VENDOR }. Each hash
represents an attribute in the current object. The "Name" and
"Value" pairs will contain values as translated by the
dictionary (if one was loaded). The "Code" and
"RawValue" pairs always contain the raw attribute type &
value as received from the server. If some attribute doesn't exist in
dictionary or type of attribute not specified then corresponding
"Value" undefined and "Name" set to attribute ID
("Code" value).
- clear_attributes
- Clears all attributes for the current object.
- send_packet ( REQUEST_TYPE, RETRANSMIT )
- Packs up a Radius packet based on the current secret &
attributes and sends it to the server with a Request type of
"REQUEST_TYPE". Exported "REQUEST_TYPE" methods are
'"ACCESS_REQUEST"', '"ACCESS_ACCEPT"' ,
'"ACCESS_REJECT"', '"ACCOUNTING_REQUEST"',
'"ACCOUNTING_RESPONSE"', '"DISCONNECT_REQUEST"' and
'"COA_REQUEST"'. Returns the number of bytes sent, or undef on
failure.
If the RETRANSMIT parameter is provided and contains a non-zero value, then
it is considered that we are re-sending the request, which was already
sent previously. In this case the previous value of packet indentifier is
used.
- recv_packet ( DETECT_BAD_ID )
- Receives a Radius reply packet. Returns the Radius Reply
type (see possible values for "REQUEST_TYPE" in method
"send_packet") or undef on failure. Note that failure may be due
to a failed recv() or a bad Radius response authenticator. Use
"get_error" to find out.
If the DETECT_BAD_ID parameter is supplied and contains a non-zero value,
then calculation of the packet indentifier is performed before
authenticator check and EBADID error returned in case when packet
indentifier from the response doesn't match to the request. If the
DETECT_BAD_ID is not provided or contains zero value then EBADAUTH
returned in such case.
- get_error
- Returns the last "ERRORCODE" for the current
object. Errorcodes are one-word strings always beginning with an
'"E"'.
- strerror ( [ ERRORCODE ] )
- Returns a verbose error string for the last error for the
current object, or for the specified "ERRORCODE".
- error_comment
- Returns the last error explanation for the current object.
Error explanation is generated by system call.
- get_active_node
- Returns currently active radius node in standard
numbers-and-dots notation with port delimited by colon.
AUTHOR¶
Carl Declerck <carl@miskatonic.inbe.net> - original design Alexander
Kapitanenko <kapitan at portaone.com> and Andrew Zhilenko <andrew at
portaone.com> - later modifications.
Andrew Zhilenko <andrew at portaone.com> is the current module's maintaner
at CPAN.