184 lines
5.4 KiB
Smalltalk
184 lines
5.4 KiB
Smalltalk
"
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(C) 2011 by Holger Hans Peter Freyther
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All Rights Reserved
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"
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PackageLoader fileInPackage: 'PetitParser'.
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PP.PPCompositeParser subclass: SIPGrammar [
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| Response StatusLine message_header
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CRLF SP HTAB HCOLON SWS LWS WSP
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message_body SIPVersion StatusCode ReasonPhrase
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extension_header header_name header_value |
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"http://sofia-sip.org/repos/sofia-sip/libsofia-sip-ua/sip/GRAMMAR"
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<category: 'SIP-Core'>
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<comment: 'I try to parse RFC3261'>
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start [
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<category: 'start'>
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^ Response
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]
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CRLF [
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<category: 'misc'>
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^ Character cr asParser, Character nl asParser
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]
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SP [
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<category: 'misc'>
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^ $ asParser
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]
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Response [
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<category: 'response'>
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^ StatusLine, message_header star, CRLF, message_body optional
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]
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StatusLine [
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<category: 'response'>
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^ SIPVersion, SP, StatusCode, SP, ReasonPhrase, CRLF
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]
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SIPVersion [
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<category: 'generic'>
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^ 'SIP/' asParser, #digit asParser, $. asParser, #digit asParser
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]
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StatusCode [
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<category: 'response'>
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"Combined into one..."
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^ '100' asParser / "Trying"
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'180' asParser / "Ringing"
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'181' asParser / "Call Is Being Forwarded"
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'182' asParser / "Queued"
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'183' asParser / "Session Progress"
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'200' asParser / "OK"
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'300' asParser / "Multiple Choices"
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'301' asParser / "Moved Permanently"
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'302' asParser / "Moved Temporarily"
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'380' asParser / "Alternative Service"
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'400' asParser / "Bad Request"
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'401' asParser / "Unauthorized"
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'402' asParser / "Payment Required"
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'403' asParser / "Forbidden"
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'404' asParser / "Not Found"
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'405' asParser / "Method Not Allowed"
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'406' asParser / "Not Acceptable"
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'407' asParser / "Proxy Authentication Required"
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'408' asParser / "Request Timeout"
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'410' asParser / "Gone"
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'413' asParser / "Request Entity Too Large"
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'414' asParser / "Request-URI Too Large"
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'415' asParser / "Unsupported Media Type"
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'416' asParser / "Unsupported URI Scheme"
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'420' asParser / "Bad Extension"
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'421' asParser / "Extension Required"
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'423' asParser / "Interval Too Brief"
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'480' asParser / "Temporarily not available"
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'481' asParser / "Call Leg/Transaction Does Not Exist"
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'482' asParser / "Loop Detected"
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'483' asParser / "Too Many Hops"
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'484' asParser / "Address Incomplete"
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'485' asParser / "Ambiguous"
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'486' asParser / "Busy Here"
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'487' asParser / "Request Terminated"
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'488' asParser / "Not Acceptable Here"
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'491' asParser / "Request Pending"
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'493' asParser / "Undecipherable"
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'500' asParser / "Internal Server Error"
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'501' asParser / "Not Implemented"
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'502' asParser / "Bad Gateway"
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'503' asParser / "Service Unavailable"
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'504' asParser / "Server Time-out"
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'505' asParser / "SIP Version not supported"
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'513' asParser / "Message Too Large"
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'600' asParser / "Busy Everywhere"
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'603' asParser /"Decline"
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'604' asParser /"Does not exist anywhere"
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'606' asParser "Not Acceptable"
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]
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ReasonPhrase [
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<category: 'response'>
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^ (#digit asParser / Character space asParser / HTAB / #letter asParser) star flatten
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]
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message_header [
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"Simplified..."
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<category: 'generic'>
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^ (extension_header), CRLF
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]
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message_body [
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^ #any asParser plus flatten
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]
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extension_header [
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<category: 'generic'>
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^ header_name, HCOLON, header_value
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]
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header_name [
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<category: 'generic'>
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"hmm 1*() should be optional but it must be star here"
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^ (#letter asParser / #digit asParser /
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$- asParser / $. asParser /
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$! asParser / $% asParser /
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$* asParser / $_ asParser /
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$+ asParser / $` asParser /
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$' asParser / $~ asParser) star flatten
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]
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header_value [
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<category: 'generic'>
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"TODO: TEXT-UTF8char / UTF8-CONT"
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^ (#letter asParser / #digit asParser / #punctuation asParser / #blank asParser / LWS) star flatten
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]
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HTAB [
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<category: 'generic'>
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^ Character tab asParser
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]
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HCOLON [
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<category: 'generic'>
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^ (SP / HTAB) star, $: asParser, SWS
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]
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WSP [
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<category: 'misc'>
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^ #blank asParser
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]
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LWS [
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<category: 'generic'>
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(WSP star, CRLF) optional, WSP plus
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]
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SWS [
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<category: 'generic'>
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^ LWS optional
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]
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]
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