PHP: RADIUS Attribute Types

RADIUS Attribute Types

These constants define RADIUS attribute types that can be used with radius_put_addr(), radius_put_attr(), radius_put_int() and radius_put_string().

RADIUS_USER_NAME (int)

The User-Name attribute. The attribute value is expected to be a string containing the name of the user being authenticated, and can be set using radius_put_attr().

RADIUS_USER_PASSWORD (int)

The User-Password attribute. The attribute value is expected to be a string containing the user's password, and can be set using radius_put_attr(). This value will be obfuscated on transmission as described in » section 5.2 of RFC 2865.

RADIUS_CHAP_PASSWORD (int)

The Chap-Password attribute. The attribute value is expected to be a string with the first byte containing the CHAP identifier, and the subsequent 16 bytes containing the MD5 hash of the CHAP identifier, the plaintext password and the CHAP challenge value concatenated together. Note that the CHAP challenge value should also be sent separately in a RADIUS_CHAP_CHALLENGE attribute.

Example #1 Using CHAP passwords

<?php
// Firstly, we'll create an authentication handle and request.
$radh = radius_auth_open();
radius_add_server($radh, $server, $port, $secret, 3, 3);
radius_create_request($radh, RADIUS_ACCESS_REQUEST);

// Assuming $password contains the plaintext password, we now:

// Generate a challenge.
$challenge = mt_rand();

// Specify a CHAP identifier.
$ident = 1;

// Add the Chap-Password attribute.
$cp = md5(pack('Ca*', $ident, $password.$challenge), true);
radius_put_attr($radh, RADIUS_CHAP_PASSWORD, pack('C', $ident).$cp);

// Add the Chap-Challenge attribute.
radius_put_attr($radh, RADIUS_CHAP_CHALLENGE, $challenge);

/* From here, you would add the remaining attributes and
 * call radius_send_request(). */
?>

RADIUS_NAS_IP_ADDRESS (int)

The NAS-IP-Address attribute. The attribute value is expected to the IP address of the RADIUS client encoded as an int, which can be set using radius_put_addr().

RADIUS_NAS_PORT (int)

The NAS-Port attribute. The attribute value is expected to be the physical port of the user on the RADIUS client encoded as an int, which can be set using radius_put_int().

RADIUS_SERVICE_TYPE (int)

The Service-Type attribute. The attribute value indicates the service type the user is requesting, and is expected to be an int, which can be set using radius_put_int().

A number of constants are provided to represent the possible values of this attribute. They include:

RADIUS_FRAMED_PROTOCOL (int)

The Framed-Protocol attribute. The attribute value is expected to be an int indicating the framing to be used for framed access, and can be set using radius_put_int(). The possible attribute values include these constants:

RADIUS_FRAMED_IP_ADDRESS (int)

The Framed-IP-Address attribute. The attribute value is expected to be the address of the user's network encoded as an int, which can be set using radius_put_addr() and retrieved using radius_cvt_addr().

RADIUS_FRAMED_IP_NETMASK (int)

The Framed-IP-Netmask attribute. The attribute value is expected to be the netmask of the user's network encoded as an int, which can be set using radius_put_addr() and retrieved using radius_cvt_addr().

RADIUS_FRAMED_ROUTING (int)

The Framed-Routing attribute. The attribute value is expected to be an int indicating the routing method for the user, which can be set using radius_put_int().

Possible values include:

0: No routing
1: Send routing packets
2: Listen for routing packets
3: Send and listen

RADIUS_FILTER_ID (int)

The Filter-ID attribute. The attribute value is expected to be an implementation-specific, human-readable string of filters, which can be set using radius_put_attr().

RADIUS_FRAMED_MTU (int)

The Framed-MTU attribute. The attribute value is expected to be an int indicating the MTU to be configured for the user, and can be set using radius_put_int().

RADIUS_FRAMED_COMPRESSION (int)

The Framed-Compression attribute. The attribute value is expected to be an int indicating the compression protocol to be used, and can be set using radius_put_int(). Possible values include these constants:

RADIUS_COMP_NONE: No compression
RADIUS_COMP_VJ: VJ TCP/IP header compression
RADIUS_COMP_IPXHDR: IPX header compression
RADIUS_COMP_STAC_LZS: Stac-LZS compression (added in PECL radius 1.3.0b2)

RADIUS_LOGIN_IP_HOST (int)

The Login-IP-Host attribute. The attribute value is expected to the IP address to connect the user to, encoded as an int, which can be set using radius_put_addr().

RADIUS_LOGIN_SERVICE (int)

The Login-Service attribute. The attribute value is an int indicating the service to connect the user to on the login host. The value can be converted to a PHP integer via radius_cvt_int().

RADIUS_LOGIN_TCP_PORT (int)

The Login-TCP-Port attribute. The attribute value is an int indicating the port to connect the user to on the login host. The value can be converted to a PHP integer via radius_cvt_int().

RADIUS_REPLY_MESSAGE (int)

The Reply-Message attribute. The attribute value is a string containing text that may be displayed to the user in response to an access request.

RADIUS_CALLBACK_NUMBER (int)

The Callback-Number attribute. The attribute value is a string containing the dialing string to use for callback.

RADIUS_CALLBACK_ID (int)

The Callback-Id attribute. The attribute value is a string containing an implementation-specific name of the place to be called.

RADIUS_FRAMED_ROUTE (int)

The Framed-Route attribute. The attribute value is a string containing an implementation-specific set of routes to be configured for the user.

RADIUS_FRAMED_IPX_NETWORK (int)

The Framed-IPX-Network attribute. The attribute value is an int containing the IPX network to be configured for the user, or 0xFFFFFFFE to indicate that the RADIUS client should select the network, and can be accessed via radius_cvt_int().

RADIUS_STATE (int)

The State attribute. The attribute value is an implementation-defined string included in an Access-Challenge from a server that must be included in the subsequent Access-Request, and can be set using radius_put_attr().

RADIUS_CLASS (int)

The Class attribute. The attribute value is an arbitrary string included in an Access-Accept message that should then be sent to the accounting server in Accounting-Request messages, and can be set using radius_put_attr().

RADIUS_VENDOR_SPECIFIC (int)

The Vendor-Specific attribute. In general, vendor attribute values should be set using radius_put_vendor_addr(), radius_put_vendor_attr(), radius_put_vendor_int() and radius_put_vendor_string(), rather than directly.

This constant is mostly useful when interpreting vendor specific attributes in responses from a RADIUS server; when a vendor specific attribute is received, the radius_get_vendor_attr() function should be used to access the vendor ID, attribute type and attribute value.

RADIUS_SESSION_TIMEOUT (int)