zonefile-parser
Version:
zonefile DNS configuration parser
870 lines (769 loc) • 32.8 kB
JavaScript
module.exports = (function() {
"use strict";
/*
* Generated by PEG.js 0.9.0.
*
* http://pegjs.org/
*/
function peg$subclass(child, parent) {
function ctor() { this.constructor = child; }
ctor.prototype = parent.prototype;
child.prototype = new ctor();
}
function peg$SyntaxError(message, expected, found, location) {
this.message = message;
this.expected = expected;
this.found = found;
this.location = location;
this.name = "SyntaxError";
if (typeof Error.captureStackTrace === "function") {
Error.captureStackTrace(this, peg$SyntaxError);
}
}
peg$subclass(peg$SyntaxError, Error);
function peg$parse(input) {
var options = arguments.length > 1 ? arguments[1] : {},
parser = this,
peg$FAILED = {},
peg$startRuleIndices = { Zonefile: 0 },
peg$startRuleIndex = 0,
peg$consts = [
function(directives, records) {
return {
origin: findNoneOneOrError(directives, 'origin'),
ttl: findNoneOneOrError(directives, 'ttl'),
records: records.filter(r => !Array.isArray(r)) // Remove blank lines / comments
}
function findNoneOneOrError (arr, prop) {
var results = arr.filter(item => !!item[prop])
if (results.length === 0) return null
if (results.length === 1) return results[0][prop]
return error('Zonefile has ' + results.length + ' $' + prop.toUpperCase() + ' directives. A valid zonefile has 1 or none.')
}
},
"$ORIGIN",
{ type: "literal", value: "$ORIGIN", description: "\"$ORIGIN\"" },
function(origin) { return { origin: origin } },
"$TTL",
{ type: "literal", value: "$TTL", description: "\"$TTL\"" },
function(ttl) { return { ttl: ttl } },
"A",
{ type: "literal", value: "A", description: "\"A\"" },
function(intro, type, address) {
return {
name: intro.name,
ttl: intro.ttl,
type: type,
data: address
}
},
"AAAA",
{ type: "literal", value: "AAAA", description: "\"AAAA\"" },
"CNAME",
{ type: "literal", value: "CNAME", description: "\"CNAME\"" },
function(intro, type, domain) {
return {
name: intro.name,
ttl: intro.ttl,
type: type,
data: domain
}
},
"MX",
{ type: "literal", value: "MX", description: "\"MX\"" },
function(intro, type, preference, domain) {
return {
name: intro.name,
ttl: intro.ttl,
type: type,
data: { preference: preference, domain: domain }
}
},
"NS",
{ type: "literal", value: "NS", description: "\"NS\"" },
function(intro, type, nameServer) {
return {
name: intro.name,
ttl: intro.ttl,
type: type,
data: nameServer
}
},
"SOA",
{ type: "literal", value: "SOA", description: "\"SOA\"" },
"(",
{ type: "literal", value: "(", description: "\"(\"" },
")",
{ type: "literal", value: ")", description: "\")\"" },
function(intro, type, nameServer, email, serial, refresh, retry, expiry, minimum) {
return {
name: intro.name,
ttl: intro.ttl,
type: type,
data: { nameServer: nameServer, email:email, serial:serial, refresh:refresh, retry:retry, expiry:expiry, minimum:minimum }
}
},
"SRV",
{ type: "literal", value: "SRV", description: "\"SRV\"" },
function(intro, type, priority, weight, port, target) {
return {
name: intro.name,
ttl: intro.ttl,
type: type,
data: { priority: priority, weight: weight, port: port, target: target }
}
},
"TXT",
{ type: "literal", value: "TXT", description: "\"TXT\"" },
function(intro, type, strings) {
return {
name: intro.name,
ttl: intro.ttl,
type: type,
data: strings.join('')
}
},
function(intro, type, data) {
return {
name: intro.name,
ttl: intro.ttl,
type: type,
data: data
}
},
function(name, ttl) {
return {
name:name,
ttl: ttl
}
},
"@",
{ type: "literal", value: "@", description: "\"@\"" },
function(name) { return name },
"IN",
{ type: "literal", value: "IN", description: "\"IN\"" },
"X25",
{ type: "literal", value: "X25", description: "\"X25\"" },
"WKS",
{ type: "literal", value: "WKS", description: "\"WKS\"" },
"URI",
{ type: "literal", value: "URI", description: "\"URI\"" },
"UNSPEC",
{ type: "literal", value: "UNSPEC", description: "\"UNSPEC\"" },
"UINFO",
{ type: "literal", value: "UINFO", description: "\"UINFO\"" },
"UID",
{ type: "literal", value: "UID", description: "\"UID\"" },
"TSIG",
{ type: "literal", value: "TSIG", description: "\"TSIG\"" },
"TLSA",
{ type: "literal", value: "TLSA", description: "\"TLSA\"" },
"TKEY",
{ type: "literal", value: "TKEY", description: "\"TKEY\"" },
"TALINK",
{ type: "literal", value: "TALINK", description: "\"TALINK\"" },
"TA",
{ type: "literal", value: "TA", description: "\"TA\"" },
"SSHFP",
{ type: "literal", value: "SSHFP", description: "\"SSHFP\"" },
"SPF",
{ type: "literal", value: "SPF", description: "\"SPF\"" },
"SMIMEA",
{ type: "literal", value: "SMIMEA", description: "\"SMIMEA\"" },
"SINK",
{ type: "literal", value: "SINK", description: "\"SINK\"" },
"SIG",
{ type: "literal", value: "SIG", description: "\"SIG\"" },
"RT",
{ type: "literal", value: "RT", description: "\"RT\"" },
"RRSIG",
{ type: "literal", value: "RRSIG", description: "\"RRSIG\"" },
"RP",
{ type: "literal", value: "RP", description: "\"RP\"" },
"RKEY",
{ type: "literal", value: "RKEY", description: "\"RKEY\"" },
"PX",
{ type: "literal", value: "PX", description: "\"PX\"" },
"PTR",
{ type: "literal", value: "PTR", description: "\"PTR\"" },
"OPT",
{ type: "literal", value: "OPT", description: "\"OPT\"" },
"OPENPGPKEY",
{ type: "literal", value: "OPENPGPKEY", description: "\"OPENPGPKEY\"" },
"NXT",
{ type: "literal", value: "NXT", description: "\"NXT\"" },
"NULL",
{ type: "literal", value: "NULL", description: "\"NULL\"" },
"NSEC3PARAM",
{ type: "literal", value: "NSEC3PARAM", description: "\"NSEC3PARAM\"" },
"NSEC3",
{ type: "literal", value: "NSEC3", description: "\"NSEC3\"" },
"NSEC",
{ type: "literal", value: "NSEC", description: "\"NSEC\"" },
"NSAP-PTR",
{ type: "literal", value: "NSAP-PTR", description: "\"NSAP-PTR\"" },
"NSAP",
{ type: "literal", value: "NSAP", description: "\"NSAP\"" },
"NINFO",
{ type: "literal", value: "NINFO", description: "\"NINFO\"" },
"NIMLOC",
{ type: "literal", value: "NIMLOC", description: "\"NIMLOC\"" },
"NID",
{ type: "literal", value: "NID", description: "\"NID\"" },
"NAPTR",
{ type: "literal", value: "NAPTR", description: "\"NAPTR\"" },
"MR",
{ type: "literal", value: "MR", description: "\"MR\"" },
"MINFO",
{ type: "literal", value: "MINFO", description: "\"MINFO\"" },
"MG",
{ type: "literal", value: "MG", description: "\"MG\"" },
"MF",
{ type: "literal", value: "MF", description: "\"MF\"" },
"MD",
{ type: "literal", value: "MD", description: "\"MD\"" },
"MB",
{ type: "literal", value: "MB", description: "\"MB\"" },
"MAILB",
{ type: "literal", value: "MAILB", description: "\"MAILB\"" },
"MAILA",
{ type: "literal", value: "MAILA", description: "\"MAILA\"" },
"LP",
{ type: "literal", value: "LP", description: "\"LP\"" },
"LOC",
{ type: "literal", value: "LOC", description: "\"LOC\"" },
"L64",
{ type: "literal", value: "L64", description: "\"L64\"" },
"L32",
{ type: "literal", value: "L32", description: "\"L32\"" },
"KX",
{ type: "literal", value: "KX", description: "\"KX\"" },
"KEY",
{ type: "literal", value: "KEY", description: "\"KEY\"" },
"IXFR",
{ type: "literal", value: "IXFR", description: "\"IXFR\"" },
"ISDN",
{ type: "literal", value: "ISDN", description: "\"ISDN\"" },
"IPSECKEY",
{ type: "literal", value: "IPSECKEY", description: "\"IPSECKEY\"" },
"HIP",
{ type: "literal", value: "HIP", description: "\"HIP\"" },
"HINFO",
{ type: "literal", value: "HINFO", description: "\"HINFO\"" },
"GPOS",
{ type: "literal", value: "GPOS", description: "\"GPOS\"" },
"GID",
{ type: "literal", value: "GID", description: "\"GID\"" },
"EUI64",
{ type: "literal", value: "EUI64", description: "\"EUI64\"" },
"EUI48",
{ type: "literal", value: "EUI48", description: "\"EUI48\"" },
"EID",
{ type: "literal", value: "EID", description: "\"EID\"" },
"DS",
{ type: "literal", value: "DS", description: "\"DS\"" },
"DNSKEY",
{ type: "literal", value: "DNSKEY", description: "\"DNSKEY\"" },
"DNAME",
{ type: "literal", value: "DNAME", description: "\"DNAME\"" },
"DLV",
{ type: "literal", value: "DLV", description: "\"DLV\"" },
"DHCID",
{ type: "literal", value: "DHCID", description: "\"DHCID\"" },
"CSYNC",
{ type: "literal", value: "CSYNC", description: "\"CSYNC\"" },
"CERT",
{ type: "literal", value: "CERT", description: "\"CERT\"" },
"CDS",
{ type: "literal", value: "CDS", description: "\"CDS\"" },
"CDNSKEY",
{ type: "literal", value: "CDNSKEY", description: "\"CDNSKEY\"" },
"CAA",
{ type: "literal", value: "CAA", description: "\"CAA\"" },
"AXFR",
{ type: "literal", value: "AXFR", description: "\"AXFR\"" },
"ATMA",
{ type: "literal", value: "ATMA", description: "\"ATMA\"" },
"APL",
{ type: "literal", value: "APL", description: "\"APL\"" },
"AFSDB",
{ type: "literal", value: "AFSDB", description: "\"AFSDB\"" },
"A6",
{ type: "literal", value: "A6", description: "\"A6\"" },
{ type: "any", description: "any character" },
".",
{ type: "literal", value: ".", description: "\".\"" },
/^[a-z0-9\-_*]/i,
{ type: "class", value: "[a-z0-9-_\\*]i", description: "[a-z0-9-_\\*]i" },
/^[smhdw]/i,
{ type: "class", value: "[smhdw]i", description: "[smhdw]i" },
/^[0-9]/,
{ type: "class", value: "[0-9]", description: "[0-9]" },
":",
{ type: "literal", value: ":", description: "\":\"" },
/^[0-9a-f]/i,
{ type: "class", value: "[0-9a-f]i", description: "[0-9a-f]i" },
"0",
{ type: "literal", value: "0", description: "\"0\"" },
/^[1-9]/,
{ type: "class", value: "[1-9]", description: "[1-9]" },
{ type: "other", description: "Comment" },
";",
{ type: "literal", value: ";", description: "\";\"" },
function(message) { return message },
{ type: "other", description: "Newline" },
"\n",
{ type: "literal", value: "\n", description: "\"\\n\"" },
"\r\n",
{ type: "literal", value: "\r\n", description: "\"\\r\\n\"" },
"\r",
{ type: "literal", value: "\r", description: "\"\\r\"" },
"\u2028",
{ type: "literal", value: "\u2028", description: "\"\\u2028\"" },
"\u2029",
{ type: "literal", value: "\u2029", description: "\"\\u2029\"" },
{ type: "other", description: "Whitespace or Newline" },
{ type: "other", description: "Whitespace" },
/^[ \t]/,
{ type: "class", value: "[ \\t]", description: "[ \\t]" },
"\"",
{ type: "literal", value: "\"", description: "\"\\\"\"" },
/^[^"]/,
{ type: "class", value: "[^\"]", description: "[^\"]" },
function(txt) { return txt },
function(str) { return str }
],
peg$bytecode = [
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peg$decode("%2\u0101\"\"6\u01017\u0102/Z#%$4\u0103\"\"5!7\u01040)*4\u0103\"\"5!7\u0104&/\"!&,)/7$2\u0101\"\"6\u01017\u0102/($8#:\u0105#!!)(#'#(\"'#&'#"),
peg$decode("%;A/6#;@.\" &\"/($8\":\u0106\"!!)(\"'#&'#"),
peg$decode("%;A/8#$;?0#*;?&/($8\":\u0106\"!!)(\"'#&'#"),
peg$decode("%27\"\"6778/M#$;C/�#*;C&&&#/7$29\"\"697:/($8#:\u0106#!!)(#'#(\"'#&'#")
],
peg$currPos = 0,
peg$savedPos = 0,
peg$posDetailsCache = [{ line: 1, column: 1, seenCR: false }],
peg$maxFailPos = 0,
peg$maxFailExpected = [],
peg$silentFails = 0,
peg$result;
if ("startRule" in options) {
if (!(options.startRule in peg$startRuleIndices)) {
throw new Error("Can't start parsing from rule \"" + options.startRule + "\".");
}
peg$startRuleIndex = peg$startRuleIndices[options.startRule];
}
function text() {
return input.substring(peg$savedPos, peg$currPos);
}
function location() {
return peg$computeLocation(peg$savedPos, peg$currPos);
}
function expected(description) {
throw peg$buildException(
null,
[{ type: "other", description: description }],
input.substring(peg$savedPos, peg$currPos),
peg$computeLocation(peg$savedPos, peg$currPos)
);
}
function error(message) {
throw peg$buildException(
message,
null,
input.substring(peg$savedPos, peg$currPos),
peg$computeLocation(peg$savedPos, peg$currPos)
);
}
function peg$computePosDetails(pos) {
var details = peg$posDetailsCache[pos],
p, ch;
if (details) {
return details;
} else {
p = pos - 1;
while (!peg$posDetailsCache[p]) {
p--;
}
details = peg$posDetailsCache[p];
details = {
line: details.line,
column: details.column,
seenCR: details.seenCR
};
while (p < pos) {
ch = input.charAt(p);
if (ch === "\n") {
if (!details.seenCR) { details.line++; }
details.column = 1;
details.seenCR = false;
} else if (ch === "\r" || ch === "\u2028" || ch === "\u2029") {
details.line++;
details.column = 1;
details.seenCR = true;
} else {
details.column++;
details.seenCR = false;
}
p++;
}
peg$posDetailsCache[pos] = details;
return details;
}
}
function peg$computeLocation(startPos, endPos) {
var startPosDetails = peg$computePosDetails(startPos),
endPosDetails = peg$computePosDetails(endPos);
return {
start: {
offset: startPos,
line: startPosDetails.line,
column: startPosDetails.column
},
end: {
offset: endPos,
line: endPosDetails.line,
column: endPosDetails.column
}
};
}
function peg$fail(expected) {
if (peg$currPos < peg$maxFailPos) { return; }
if (peg$currPos > peg$maxFailPos) {
peg$maxFailPos = peg$currPos;
peg$maxFailExpected = [];
}
peg$maxFailExpected.push(expected);
}
function peg$buildException(message, expected, found, location) {
function cleanupExpected(expected) {
var i = 1;
expected.sort(function(a, b) {
if (a.description < b.description) {
return -1;
} else if (a.description > b.description) {
return 1;
} else {
return 0;
}
});
while (i < expected.length) {
if (expected[i - 1] === expected[i]) {
expected.splice(i, 1);
} else {
i++;
}
}
}
function buildMessage(expected, found) {
function stringEscape(s) {
function hex(ch) { return ch.charCodeAt(0).toString(16).toUpperCase(); }
return s
.replace(/\\/g, '\\\\')
.replace(/"/g, '\\"')
.replace(/\x08/g, '\\b')
.replace(/\t/g, '\\t')
.replace(/\n/g, '\\n')
.replace(/\f/g, '\\f')
.replace(/\r/g, '\\r')
.replace(/[\x00-\x07\x0B\x0E\x0F]/g, function(ch) { return '\\x0' + hex(ch); })
.replace(/[\x10-\x1F\x80-\xFF]/g, function(ch) { return '\\x' + hex(ch); })
.replace(/[\u0100-\u0FFF]/g, function(ch) { return '\\u0' + hex(ch); })
.replace(/[\u1000-\uFFFF]/g, function(ch) { return '\\u' + hex(ch); });
}
var expectedDescs = new Array(expected.length),
expectedDesc, foundDesc, i;
for (i = 0; i < expected.length; i++) {
expectedDescs[i] = expected[i].description;
}
expectedDesc = expected.length > 1
? expectedDescs.slice(0, -1).join(", ")
+ " or "
+ expectedDescs[expected.length - 1]
: expectedDescs[0];
foundDesc = found ? "\"" + stringEscape(found) + "\"" : "end of input";
return "Expected " + expectedDesc + " but " + foundDesc + " found.";
}
if (expected !== null) {
cleanupExpected(expected);
}
return new peg$SyntaxError(
message !== null ? message : buildMessage(expected, found),
expected,
found,
location
);
}
function peg$decode(s) {
var bc = new Array(s.length), i;
for (i = 0; i < s.length; i++) {
bc[i] = s.charCodeAt(i) - 32;
}
return bc;
}
function peg$parseRule(index) {
var bc = peg$bytecode[index],
ip = 0,
ips = [],
end = bc.length,
ends = [],
stack = [],
params, i;
while (true) {
while (ip < end) {
switch (bc[ip]) {
case 0:
stack.push(peg$consts[bc[ip + 1]]);
ip += 2;
break;
case 1:
stack.push(void 0);
ip++;
break;
case 2:
stack.push(null);
ip++;
break;
case 3:
stack.push(peg$FAILED);
ip++;
break;
case 4:
stack.push([]);
ip++;
break;
case 5:
stack.push(peg$currPos);
ip++;
break;
case 6:
stack.pop();
ip++;
break;
case 7:
peg$currPos = stack.pop();
ip++;
break;
case 8:
stack.length -= bc[ip + 1];
ip += 2;
break;
case 9:
stack.splice(-2, 1);
ip++;
break;
case 10:
stack[stack.length - 2].push(stack.pop());
ip++;
break;
case 11:
stack.push(stack.splice(stack.length - bc[ip + 1], bc[ip + 1]));
ip += 2;
break;
case 12:
stack.push(input.substring(stack.pop(), peg$currPos));
ip++;
break;
case 13:
ends.push(end);
ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);
if (stack[stack.length - 1]) {
end = ip + 3 + bc[ip + 1];
ip += 3;
} else {
end = ip + 3 + bc[ip + 1] + bc[ip + 2];
ip += 3 + bc[ip + 1];
}
break;
case 14:
ends.push(end);
ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);
if (stack[stack.length - 1] === peg$FAILED) {
end = ip + 3 + bc[ip + 1];
ip += 3;
} else {
end = ip + 3 + bc[ip + 1] + bc[ip + 2];
ip += 3 + bc[ip + 1];
}
break;
case 15:
ends.push(end);
ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);
if (stack[stack.length - 1] !== peg$FAILED) {
end = ip + 3 + bc[ip + 1];
ip += 3;
} else {
end = ip + 3 + bc[ip + 1] + bc[ip + 2];
ip += 3 + bc[ip + 1];
}
break;
case 16:
if (stack[stack.length - 1] !== peg$FAILED) {
ends.push(end);
ips.push(ip);
end = ip + 2 + bc[ip + 1];
ip += 2;
} else {
ip += 2 + bc[ip + 1];
}
break;
case 17:
ends.push(end);
ips.push(ip + 3 + bc[ip + 1] + bc[ip + 2]);
if (input.length > peg$currPos) {
end = ip + 3 + bc[ip + 1];
ip += 3;
} else {
end = ip + 3 + bc[ip + 1] + bc[ip + 2];
ip += 3 + bc[ip + 1];
}
break;
case 18:
ends.push(end);
ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);
if (input.substr(peg$currPos, peg$consts[bc[ip + 1]].length) === peg$consts[bc[ip + 1]]) {
end = ip + 4 + bc[ip + 2];
ip += 4;
} else {
end = ip + 4 + bc[ip + 2] + bc[ip + 3];
ip += 4 + bc[ip + 2];
}
break;
case 19:
ends.push(end);
ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);
if (input.substr(peg$currPos, peg$consts[bc[ip + 1]].length).toLowerCase() === peg$consts[bc[ip + 1]]) {
end = ip + 4 + bc[ip + 2];
ip += 4;
} else {
end = ip + 4 + bc[ip + 2] + bc[ip + 3];
ip += 4 + bc[ip + 2];
}
break;
case 20:
ends.push(end);
ips.push(ip + 4 + bc[ip + 2] + bc[ip + 3]);
if (peg$consts[bc[ip + 1]].test(input.charAt(peg$currPos))) {
end = ip + 4 + bc[ip + 2];
ip += 4;
} else {
end = ip + 4 + bc[ip + 2] + bc[ip + 3];
ip += 4 + bc[ip + 2];
}
break;
case 21:
stack.push(input.substr(peg$currPos, bc[ip + 1]));
peg$currPos += bc[ip + 1];
ip += 2;
break;
case 22:
stack.push(peg$consts[bc[ip + 1]]);
peg$currPos += peg$consts[bc[ip + 1]].length;
ip += 2;
break;
case 23:
stack.push(peg$FAILED);
if (peg$silentFails === 0) {
peg$fail(peg$consts[bc[ip + 1]]);
}
ip += 2;
break;
case 24:
peg$savedPos = stack[stack.length - 1 - bc[ip + 1]];
ip += 2;
break;
case 25:
peg$savedPos = peg$currPos;
ip++;
break;
case 26:
params = bc.slice(ip + 4, ip + 4 + bc[ip + 3]);
for (i = 0; i < bc[ip + 3]; i++) {
params[i] = stack[stack.length - 1 - params[i]];
}
stack.splice(
stack.length - bc[ip + 2],
bc[ip + 2],
peg$consts[bc[ip + 1]].apply(null, params)
);
ip += 4 + bc[ip + 3];
break;
case 27:
stack.push(peg$parseRule(bc[ip + 1]));
ip += 2;
break;
case 28:
peg$silentFails++;
ip++;
break;
case 29:
peg$silentFails--;
ip++;
break;
default:
throw new Error("Invalid opcode: " + bc[ip] + ".");
}
}
if (ends.length > 0) {
end = ends.pop();
ip = ips.pop();
} else {
break;
}
}
return stack[0];
}
peg$result = peg$parseRule(peg$startRuleIndex);
if (peg$result !== peg$FAILED && peg$currPos === input.length) {
return peg$result;
} else {
if (peg$result !== peg$FAILED && peg$currPos < input.length) {
peg$fail({ type: "end", description: "end of input" });
}
throw peg$buildException(
null,
peg$maxFailExpected,
peg$maxFailPos < input.length ? input.charAt(peg$maxFailPos) : null,
peg$maxFailPos < input.length
? peg$computeLocation(peg$maxFailPos, peg$maxFailPos + 1)
: peg$computeLocation(peg$maxFailPos, peg$maxFailPos)
);
}
}
return {
SyntaxError: peg$SyntaxError,
parse: peg$parse
};
})();