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lexers: Add BIND DNS Zone lexer
Closes #623 Signed-off-by: Mubashshir <ahmubashshir@gmail.com>
This commit is contained in:
Mubashshir
Alec Thomas
parent
f941d464e2
commit
5ce1d5dd69
lexers
17
lexers/dns.go
Normal file
17
lexers/dns.go
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@ -0,0 +1,17 @@
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package lexers
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import (
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"regexp"
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)
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// TODO(moorereason): can this be factored away?
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var zoneAnalyserRe = regexp.MustCompile(`(?m)^@\s+IN\s+SOA\s+`)
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func init() { // nolint: gochecknoinits
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Get("dns").SetAnalyser(func(text string) float32 {
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if zoneAnalyserRe.FindString(text) != "" {
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return 1.0
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}
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return 0.0
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})
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}
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42
lexers/embedded/dns.xml
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42
lexers/embedded/dns.xml
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@ -0,0 +1,42 @@
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<?xml version="1.0"?>
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<lexer>
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<config>
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<name>dns</name>
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<alias>zone</alias>
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<alias>bind</alias>
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</config>
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<rules>
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<state name="root">
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<rule pattern="\b(IN|A|AAAA|AFSDB|APL|CAA|CDNSKEY|CDS|CERT|CNAME|DHCID|DLV|DNAME|DNSKEY|DS|HIP|IPSECKEY|KEY|KX|LOC|MX|NAPTR|NS|NSEC|NSEC3|NSEC3PARAM|PTR|RRSIG|RP|SIG|SOA|SRV|SSHFP|TA|TKEY|TLSA|TSIG|TXT)\b">
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<token type="Keyword"/>
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</rule>
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<rule pattern=";.*(\S|$)">
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<token type="Comment"/>
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</rule>
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<rule pattern="\b((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)){3}))|:)))\b">
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<token type="LiteralNumberIntegerLong"/>
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</rule>
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<rule pattern="\b((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\b">
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<token type="LiteralNumberInteger"/>
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</rule>
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<rule pattern="\b\d+[dhwm]?">
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<token type="LiteralStringChar"/>
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</rule>
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<rule pattern="\b([[:alnum:].-])+\.($|\s)">
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<token type="NameProperty"/>
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</rule>
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<rule pattern="^(@|[[:alnum:]-]+)">
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<token type="NameClass"/>
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</rule>
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<rule pattern="^\$(TTL|GENERATE|INCLUDE|ORIGIN)">
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<token type="NameAttribute"/>
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</rule>
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<rule pattern="\(|\)">
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<token type="Punctuation"/>
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</rule>
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<rule pattern="[\r\n\s\t]+">
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<token type="TextWhitespace"/>
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</rule>
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</state>
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</rules>
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</lexer>
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19
lexers/testdata/dns.actual
vendored
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19
lexers/testdata/dns.actual
vendored
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@ -0,0 +1,19 @@
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; /etc/bind/zones/example.org
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$TTL 3h;
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@ IN SOA ns.example.org. example.org. (
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1 ; serial
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3h; refresh timeout
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1h; retry timeout
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1w; expire timeout
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1h; negative caching TTL
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)
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@ IN NS ns.example.org. ; name server
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@ IN MX 10 example.org. ; mail exchange server
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ns IN A 1.2.3.4
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@ IN A 1.2.3.4
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ns IN AAAA ef::1
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@ IN AAAA ef::1
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www IN CNAME example.org.
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98
lexers/testdata/dns.expected
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98
lexers/testdata/dns.expected
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@ -0,0 +1,98 @@
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[
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{"type":"Comment","value":"; /etc/bind/zones/example.org"},
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{"type":"TextWhitespace","value":"\n"},
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{"type":"NameAttribute","value":"$TTL"},
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{"type":"TextWhitespace","value":" "},
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{"type":"LiteralStringChar","value":"3h"},
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{"type":"Comment","value":";"},
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{"type":"TextWhitespace","value":"\n"},
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{"type":"NameClass","value":"@"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"IN"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"SOA"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"NameProperty","value":"ns.example.org. example.org. "},
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{"type":"Punctuation","value":"("},
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{"type":"TextWhitespace","value":"\n\t"},
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{"type":"LiteralStringChar","value":"1"},
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{"type":"TextWhitespace","value":" "},
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{"type":"Comment","value":"; serial"},
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{"type":"TextWhitespace","value":"\n\t"},
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{"type":"LiteralStringChar","value":"3h"},
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{"type":"Comment","value":"; refresh timeout"},
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{"type":"TextWhitespace","value":"\n\t"},
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{"type":"LiteralStringChar","value":"1h"},
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{"type":"Comment","value":"; retry timeout"},
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{"type":"TextWhitespace","value":"\n\t"},
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{"type":"LiteralStringChar","value":"1w"},
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{"type":"Comment","value":"; expire timeout"},
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{"type":"TextWhitespace","value":"\n\t"},
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{"type":"LiteralStringChar","value":"1h"},
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{"type":"Comment","value":"; negative caching TTL"},
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{"type":"TextWhitespace","value":"\n"},
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{"type":"Punctuation","value":")"},
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{"type":"TextWhitespace","value":"\n"},
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{"type":"NameClass","value":"@"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"IN"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"NS"},
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{"type":"TextWhitespace","value":"\t\t"},
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{"type":"NameProperty","value":"ns.example.org. "},
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{"type":"TextWhitespace","value":" "},
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{"type":"Comment","value":"; name server"},
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{"type":"TextWhitespace","value":"\n"},
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{"type":"NameClass","value":"@"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"IN"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"MX"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"LiteralStringChar","value":"10"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"NameProperty","value":"example.org. "},
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{"type":"TextWhitespace","value":" "},
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{"type":"Comment","value":"; mail exchange server"},
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{"type":"TextWhitespace","value":"\n\n"},
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{"type":"NameClass","value":"ns"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"IN"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"A"},
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{"type":"TextWhitespace","value":"\t\t"},
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{"type":"LiteralNumberInteger","value":"1.2.3.4"},
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{"type":"TextWhitespace","value":"\n"},
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{"type":"NameClass","value":"@"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"IN"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"A"},
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{"type":"TextWhitespace","value":"\t\t"},
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{"type":"LiteralNumberInteger","value":"1.2.3.4"},
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{"type":"TextWhitespace","value":"\n\n"},
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{"type":"NameClass","value":"ns"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"IN"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"AAAA"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"LiteralNumberIntegerLong","value":"ef::1"},
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{"type":"TextWhitespace","value":"\n"},
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{"type":"NameClass","value":"@"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"IN"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"AAAA"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"LiteralNumberIntegerLong","value":"ef::1"},
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{"type":"TextWhitespace","value":"\n\n"},
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{"type":"NameClass","value":"www"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"IN"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"Keyword","value":"CNAME"},
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{"type":"TextWhitespace","value":"\t"},
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{"type":"NameProperty","value":"example.org."},
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{"type":"TextWhitespace","value":"\n"}
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]
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