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