%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2010-2011. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%%
-ifndef(diameter_hrl).
-define(diameter_hrl, true).
%% RFC 3588, 2.4:
-define(DIAMETER_APP_ID_COMMON, 0).
-define(DIAMETER_APP_ID_ACCOUNTING, 3).
-define(DIAMETER_APP_ID_RELAY, 16#FFFFFFFF).
%% Corresponding dictionaries:
-define(DIAMETER_DICT_COMMON, diameter_gen_base_rfc3588).
-define(DIAMETER_DICT_ACCOUNTING, diameter_gen_base_accounting).
-define(DIAMETER_DICT_RELAY, diameter_gen_relay).
%% Events sent to processes that have subscribed with
%% diameter:subscribe/1.
%%
-record(diameter_event,
{service, %% name
info}). %% tuple()
%% diameter_packet records are passed through the encode/decode
%% interface supplied by a dictionary module configured on a Diameter
%% application. For an incoming message the bin field contains the
%% received binary and the header, avps, msg and errors fields the
%% result of decoding.
-record(diameter_packet,
{header, %% #diameter_header{}
avps, %% deep list() of #diameter_avp{}
msg, %% fully decoded message
bin, %% binary received/sent over the wire
errors = [],%% list() of Result-Code | {Result-Code, #diameter_avp{}}
transport_data}).
-record(diameter_header,
{version, %% 8-bit unsigned
length, %% 24-bit unsigned
cmd_code, %% 8-bit unsigned
application_id, %% 24-bit unsigned
hop_by_hop_id, %% 32-bit unsigned
end_to_end_id, %% 32-bit unsigned
is_request, %% boolean() R flag
is_proxiable, %% boolean() P flag
is_error, %% boolean() E flag
is_retransmitted}). %% boolean() T flag
-record(diameter_avp,
{code, %% 32-bit unsigned
vendor_id, %% 32-bit unsigned
is_mandatory = false, %% boolean() M flag
need_encryption = false, %% boolean() P flag
data, %% encoded binary()
name, %% atom() AVP name
value, %% decoded term() decoded | undefined
type, %% atom() type name,
index}). %% non_neg_integer() | undefined
%% A diameter_caps record corresponds to capabilities configuration on
%% diameter:start_service/2. In application callbacks is identifies
%% the peer connection for which the callback is taking place, and in
%% this case each field is a 2-tuple specifying the host (ie. local)
%% and peer (ie. remote) values, host values having been configured
%% and peer values having been received at capabilities exchange.
-record(diameter_caps,
{origin_host, %% 'DiameterIdentity'()
origin_realm, %% 'DiameterIdentity'()
host_ip_address = [], %% ['Address'()]
vendor_id, %% 'Unsigned32'()
product_name, %% 'OctetString'()
origin_state_id = [], %% ['Unsigned32'()]
supported_vendor_id = [], %% ['Unsigned32'()]
auth_application_id = [], %% ['Unsigned32'()]
inband_security_id = [], %% ['Unsigned32'()]
acct_application_id = [], %% ['Unsigned32'()]
vendor_specific_application_id = [], %% ['Grouped'()]
firmware_revision = [], %% ['Unsigned32()]
avp = []}).
%% AVP's of type DiameterURI are encoded as a diameter_uri record.
%% Note that AVP's of type IPFilterRule and QoSFilterRule are currently
%% encoded simply as OctetString's.
-record(diameter_uri,
{type, %% aaa | aaas
fqdn, %% string()
port = 3868, %% non_neg_integer(),
transport = sctp, %% | tcp,
protocol = diameter}). %% | radius | 'tacacs+'
%% A diameter_callback record can be specified as an application
%% module in order to selectively receive callbacks or alter their
%% form.
-record(diameter_callback,
{peer_up,
peer_down,
pick_peer,
prepare_request,
prepare_retransmit,
handle_request,
handle_answer,
handle_error,
default,
extra = []}).
%% The diameter service and diameter_apps records are only passed
%% through the transport interface when starting a transport process,
%% although typically a transport implementation will (and probably
%% should) only be interested host_ip_address.
-record(diameter_service,
{pid,
capabilities, %% #diameter_caps{}
applications = []}). %% [#diameter_app{}]
-record(diameter_app,
{alias, %% option 'alias'
dictionary, %% option 'dictionary', module()
module, %% [Mod | Args] callback module() and extra args
init_state, %% option 'state', initial callback state
id, %% 32-bit unsigned application identifier = Dict:id()
mutable = false, %% boolean(), do traffic callbacks modify state?
answer_errors = report}). %% | callback | discard
%% how to handle containing errors?
-endif. %% -ifdef(diameter_hrl).
