| module MGCP_Types { |
| |
| /* Definition of abstract types for the MGCP protocol as specified in |
| * IETF RFC 3435. Uses the TITAN "TEXT" codec to auto-generate encoder/decoder |
| * functions, as well as the SDP type definitions and coder from Ericsson. |
| * |
| * (C) 2017 by Harald Welte <laforge@gnumonks.org> |
| * All rights reserved. |
| * |
| * Released under the terms of GNU General Public License, Version 2 or |
| * (at your option) any later version. |
| */ |
| |
| import from SDP_Types all; |
| |
| type charstring MgcpVerb ("EPCF", "CRCX", "MDCX", "DLCX", "RQNT", "NTFY", |
| "AUEP", "AUCX", "RSIP") with { |
| /* see https://www.eclipse.org/forums/index.php/t/1088893/ on why this |
| * match expression is needed here */ |
| variant "TEXT_CODING(,convert=upper_case,'((EPCF)|(CRCX)|(MDCX)|(DLCX)|(RQNT)|(NTFY)|(AUEP)|(AUCX)|(RSIP))',case_insensitive)" |
| }; |
| type charstring MgcpTransId (pattern "\d#(1,9)"); |
| type charstring MgcpEndpoint (pattern "*@*"); |
| type hexstring MgcpCallId length(1..32); /* 3.2.2.2 */ |
| type hexstring MgcpConnectionId length(1..32); /* 3.2.2.5 */ |
| type hexstring MgcpRequestId length(1..32); /* 3.2.2.18 */ |
| type integer MgcpOsmuxCID (-1 .. 255); |
| type charstring MgcpResponseCode (pattern "\d#(3)"); |
| |
| type charstring MgcpInfoCode ("B", "C", "I", "N", "X", "L", "M", "R", |
| "S", "D", "O", "P", "E", "Z", "Q", "T", |
| "RC", "LC", "A", "ES", "RM", "RD", "PL", |
| "MD", "X-OSMO-CP", "X-OSMUX") with { |
| variant "TEXT_CODING(,convert=upper_case,'([BCINXLMRSDOPEZQTA])|(RC)|(LC)|(ES)|(RM)|(RD)|(PL)|(MD)|(X-OSMO-CP)|(X-OSMUX)',case_insensitive)" |
| }; |
| |
| /* 3.2.2.6 */ |
| type charstring MgcpConnectionMode ("sendonly", "recvonly", "sendrecv", "confrnce", |
| "inactive", "loopback", "conttest", "netwloop", |
| "netwtest"); |
| |
| /* 3.2.2.10 */ |
| type charstring MgcpLocalConnOptKeys ("a", "p", "b", "t", "e", "gc", "s", "r", "k", |
| "nt", "r"); |
| |
| type charstring MgcpVersion (pattern "\d.\d") with { |
| variant "BEGIN('MGCP ')" |
| } |
| |
| type record MgcpCommandLine { |
| MgcpVerb verb, |
| MgcpTransId trans_id, |
| MgcpEndpoint ep, |
| MgcpVersion ver |
| } with { |
| variant "SEPARATOR(' ', '[\t ]+')" |
| variant "END('\n', '([\n])|(\n)')" |
| } |
| |
| type record MgcpParameter { |
| MgcpInfoCode code, |
| charstring val optional |
| } with { |
| variant "BEGIN('')" |
| variant "SEPARATOR(': ', ':[\t ]+')" |
| variant "END('\n', '([\n])|(\n)')" |
| } |
| |
| type set of MgcpParameter MgcpParameterList with { |
| variant "BEGIN('')" |
| }; |
| |
| type record MgcpCommand { |
| MgcpCommandLine line, |
| MgcpParameterList params optional, |
| SDP_Message sdp optional |
| } with { |
| variant "BEGIN('')" |
| variant (sdp) "BEGIN('\n','([\n])|(\n)')" |
| } |
| |
| external function enc_MgcpCommand(in MgcpCommand id) return charstring |
| with { extension "prototype(convert) encode(TEXT)" }; |
| external function dec_MgcpCommand(in charstring id) return MgcpCommand |
| with { extension "prototype(convert) decode(TEXT)" }; |
| |
| type record MgcpResponseLine { |
| MgcpResponseCode code, |
| MgcpTransId trans_id, |
| charstring string optional |
| } with { |
| variant "SEPARATOR(' ', '[\t ]+')" |
| variant "END('\n', '([\n])|(\n)')" |
| } |
| |
| type record MgcpResponse { |
| MgcpResponseLine line, |
| MgcpParameterList params optional, |
| SDP_Message sdp optional |
| } with { |
| variant "BEGIN('')" |
| variant (sdp) "BEGIN('\n','([\n])|(\n)')" |
| } |
| |
| external function enc_MgcpResponse(in MgcpResponse id) return charstring |
| with { extension "prototype(convert) encode(TEXT)" }; |
| external function dec_MgcpResponse(in charstring id) return MgcpResponse |
| with { extension "prototype(convert) decode(TEXT)" }; |
| |
| type union MgcpMessage { |
| MgcpCommand command, |
| MgcpResponse response |
| } with { |
| variant "BEGIN('')" |
| } |
| |
| external function enc_MgcpMessage(in MgcpMessage id) return charstring |
| with { extension "prototype(convert) encode(TEXT)" }; |
| external function dec_MgcpMessage(in charstring id) return MgcpMessage |
| with { extension "prototype(convert) decode(TEXT)" }; |
| |
| /* IANA / 3gpp assigned payload type numbers */ |
| type enumerated SDP_FIELD_PayloadType { |
| PT_PCMU(0), |
| PT_GSM(3), |
| PT_PCMA(8), |
| PT_G729(18), |
| PT_GSMEFR(110), |
| PT_GSMHR(111), |
| PT_AMR(112), |
| PT_AMRWB(113) |
| } |
| |
| } with { encode "TEXT" } |