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Merge pull request #17 from pusateri/rcode
Add support for RCODE and other header flag decoding.
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,48 @@ | ||
/* | ||
* Traditional DNS header OPCODEs (4-bits) defined by IANA in | ||
* https://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml#dns-parameters-5 | ||
*/ | ||
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exports.toString = function (opcode) { | ||
switch (opcode) { | ||
case 0: return 'QUERY' | ||
case 1: return 'IQUERY' | ||
case 2: return 'STATUS' | ||
case 3: return 'OPCODE_3' | ||
case 4: return 'NOTIFY' | ||
case 5: return 'UPDATE' | ||
case 6: return 'OPCODE_6' | ||
case 7: return 'OPCODE_7' | ||
case 8: return 'OPCODE_8' | ||
case 9: return 'OPCODE_9' | ||
case 10: return 'OPCODE_10' | ||
case 11: return 'OPCODE_11' | ||
case 12: return 'OPCODE_12' | ||
case 13: return 'OPCODE_13' | ||
case 14: return 'OPCODE_14' | ||
case 15: return 'OPCODE_15' | ||
} | ||
return 'OPCODE_' + opcode | ||
} | ||
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||
exports.toOpcode = function (code) { | ||
switch (code.toUpperCase()) { | ||
case 'QUERY': return 0 | ||
case 'IQUERY': return 1 | ||
case 'STATUS': return 2 | ||
case 'OPCODE_3': return 3 | ||
case 'NOTIFY': return 4 | ||
case 'UPDATE': return 5 | ||
case 'OPCODE_6': return 6 | ||
case 'OPCODE_7': return 7 | ||
case 'OPCODE_8': return 8 | ||
case 'OPCODE_9': return 9 | ||
case 'OPCODE_10': return 10 | ||
case 'OPCODE_11': return 11 | ||
case 'OPCODE_12': return 12 | ||
case 'OPCODE_13': return 13 | ||
case 'OPCODE_14': return 14 | ||
case 'OPCODE_15': return 15 | ||
} | ||
return 0 | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,48 @@ | ||
/* | ||
* Traditional DNS header RCODEs (4-bits) defined by IANA in | ||
* https://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml | ||
*/ | ||
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exports.toString = function (rcode) { | ||
switch (rcode) { | ||
case 0: return 'NOERROR' | ||
case 1: return 'FORMERR' | ||
case 2: return 'SERVFAIL' | ||
case 3: return 'NXDOMAIN' | ||
case 4: return 'NOTIMP' | ||
case 5: return 'REFUSED' | ||
case 6: return 'YXDOMAIN' | ||
case 7: return 'YXRRSET' | ||
case 8: return 'NXRRSET' | ||
case 9: return 'NOTAUTH' | ||
case 10: return 'NOTZONE' | ||
case 11: return 'RCODE_11' | ||
case 12: return 'RCODE_12' | ||
case 13: return 'RCODE_13' | ||
case 14: return 'RCODE_14' | ||
case 15: return 'RCODE_15' | ||
} | ||
return 'RCODE_' + rcode | ||
} | ||
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exports.toRcode = function (code) { | ||
switch (code.toUpperCase()) { | ||
case 'NOERROR': return 0 | ||
case 'FORMERR': return 1 | ||
case 'SERVFAIL': return 2 | ||
case 'NXDOMAIN': return 3 | ||
case 'NOTIMP': return 4 | ||
case 'REFUSED': return 5 | ||
case 'YXDOMAIN': return 6 | ||
case 'YXRRSET': return 7 | ||
case 'NXRRSET': return 8 | ||
case 'NOTAUTH': return 9 | ||
case 'NOTZONE': return 10 | ||
case 'RCODE_11': return 11 | ||
case 'RCODE_12': return 12 | ||
case 'RCODE_13': return 13 | ||
case 'RCODE_14': return 14 | ||
case 'RCODE_15': return 15 | ||
} | ||
return 0 | ||
} |
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