Write proper lexer for dns records
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s3lph
parent
b8dd5c746c
commit
65328c5507
1 changed files with 77 additions and 14 deletions
89
dig-lexer.py
89
dig-lexer.py
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@ -1,28 +1,91 @@
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from pygments.lexer import ExtendedRegexLexer
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from pygments.lexer import ExtendedRegexLexer
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from pygments.token import *
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from pygments.token import *
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REPLY_CODES = {
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'NOERROR': Name.Function,
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'NXDOMAIN': String.Escape,
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'REFUSED': String.Escape,
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'NOTAUTH': String.Escape,
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'NOTZONE': String.Escape
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}
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class CustomLexer(ExtendedRegexLexer):
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class CustomLexer(ExtendedRegexLexer):
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name = 'Dig'
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name = 'Dig'
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aliases = ['dig']
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aliases = ['dig']
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filenames = ['*.zone']
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filenames = ['*.zone']
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def parse_record(lexer, match, ctx):
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def parse_dig_header(lexer, re, ctx):
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yield match.start('zone'), Name.Function, match.group('zone')
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yield re.start('c1'), Comment.Hashbang, re.group('c1')
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if match.group('ttl'):
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yield re.start('version'), String.Doc, re.group('version')
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yield match.start('ttl'), Number.Integer, match.group('ttl')
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yield re.start('c2'), Comment.Hashbang, re.group('c2')
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yield match.start('cls'), Name.Class, match.group('cls')
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yield re.start('query'), Name.Function, re.group('query')
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yield match.start('typ'), Name.Tag, match.group('typ')
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ctx.pos = re.end()
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yield match.start('value'), String.Escape, match.group('value')
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if match.group('extval'):
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def parse_response_header(lexer, re, ctx):
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yield match.start('extval'), String.Double, match.group('extval')
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yield re.start('c1'), Comment.Hashbang, re.group('c1')
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yield match.start('comment'), Comment.Special, match.group('comment')
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yield re.start('opcode'), String.Doc, re.group('opcode')
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ctx.pos = match.end()
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yield re.start('c2'), Comment.Hashbang, re.group('c2')
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yield re.start('rcode'), REPLY_CODES.get(re.group('rcode'), Name.Tag), re.group('rcode')
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yield re.start('c3'), Comment.Hashbang, re.group('c3')
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yield re.start('nonce'), String.Doc, re.group('nonce')
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yield re.start('c4'), Comment.Hashbang, re.group('c4')
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yield re.start('flags'), String.Doc, re.group('flags')
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yield re.start('c5'), Comment.Hashbang, re.group('c5')
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yield re.start('nquery'), String.Doc, re.group('nquery')
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yield re.start('c6'), Comment.Hashbang, re.group('c6')
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yield re.start('nanswer'), String.Doc, re.group('nanswer')
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yield re.start('c7'), Comment.Hashbang, re.group('c7')
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yield re.start('nauth'), String.Doc, re.group('nauth')
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yield re.start('c8'), Comment.Hashbang, re.group('c8')
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yield re.start('nadd'), String.Doc, re.group('nadd')
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ctx.pos = re.end()
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tokens = {
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tokens = {
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'root': [
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'root': [
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(r'; <<>>.*\n', Comment.Hashbang), # dig header
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(r'(?P<c1>; <<>>)(?P<version>.*)(?P<c2><<>>)(?P<query>.*\n)', parse_dig_header),
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(r'(?P<c1>;; ->>HEADER<<- opcode: )(?P<opcode>[^\s]+)(?P<c2>, status: )(?P<rcode>[^\s]+)(?P<c3>, id: )(?P<nonce>[^\s]+\n)(?P<c4>;; flags: )(?P<flags>[^;]+)(?P<c5>; QUERY: )(?P<nquery>\d+)(?P<c6>, ANSWER: )(?P<nanswer>\d+)(?P<c7>, AUTHORITY: )(?P<nauth>\d+)(?P<c8>, ADDITIONAL: )(?P<nadd>\d+\n)', parse_response_header),
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(r';;.*', Generic.Subheading), # comment section headers
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(r';;.*', Generic.Subheading), # comment section headers
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(r';.*', Comment.Single), # comment section headers
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(r';.*', Comment.Single), # comment section headers
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(r'(?P<zone>(.*)?\.\s+)(?P<ttl>[0-9]+\s+)?(?P<cls>[A-Z0-9]+\s+)(?P<typ>[A-Z0-9]+\s+)(?P<value>.+?)(?P<extval>\s+?\(\s*?(\n.*?(;[^\n]*)?)+?\))?(?P<comment>(\s+?;.*)?\n)', parse_record),
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(r'\n', Generic),
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(r'^', Generic, 'rname')
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],
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'rname': [
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(r'\s', Generic, 'wsp1'),
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(r'\\[0-7]{3}', String.Escape),
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(r'\\.', String.Escape),
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(r'.', Name.Function)
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],
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'wsp1': [
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(r'\s', Generic),
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(r'[0-9]+', Number.Integer, 'wsp2'),
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],
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'wsp2': [
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(r'\s', Generic),
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(r'[^\s]+', Name.Class, 'wsp3'),
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],
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'wsp3': [
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(r'\s', Generic),
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(r'[^\s]+', Name.Tag, 'value'),
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],
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'value': [
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(r';.*$', Comment.Special),
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(r'\(', Punctuation, 'multiline'),
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(r'\n', Generic, '#pop:5'),
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(r'\s', Generic),
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(r'"', String.Double, 'string'),
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(r'.', String.Single)
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],
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'string': [
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(r'\\[0-7]{3}', String.Escape),
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(r'\\.', String.Escape),
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(r'"', String.Double, '#pop'),
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(r'.', String.Double)
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],
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'multiline': [
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(r';.*$', Comment.Special),
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(r'\)', Punctuation, '#pop'),
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(r'\s', Generic),
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(r'"', String.Double, 'string'),
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(r'.', String.Single)
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]
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]
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}
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}
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