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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 11:08:07 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 11:08:07 +0000 |
commit | c69cb8cc094cc916adbc516b09e944cd3d137c01 (patch) | |
tree | f2878ec41fb6d0e3613906c6722fc02b934eeb80 /collectors/node.d.plugin/node_modules/lib/ber | |
parent | Initial commit. (diff) | |
download | netdata-c69cb8cc094cc916adbc516b09e944cd3d137c01.tar.xz netdata-c69cb8cc094cc916adbc516b09e944cd3d137c01.zip |
Adding upstream version 1.29.3.upstream/1.29.3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'collectors/node.d.plugin/node_modules/lib/ber')
5 files changed, 651 insertions, 0 deletions
diff --git a/collectors/node.d.plugin/node_modules/lib/ber/errors.js b/collectors/node.d.plugin/node_modules/lib/ber/errors.js new file mode 100644 index 0000000..1c0df7b --- /dev/null +++ b/collectors/node.d.plugin/node_modules/lib/ber/errors.js @@ -0,0 +1,10 @@ +// SPDX-License-Identifier: MIT + +module.exports = { + InvalidAsn1Error: function(msg) { + var e = new Error() + e.name = 'InvalidAsn1Error' + e.message = msg || '' + return e + } +} diff --git a/collectors/node.d.plugin/node_modules/lib/ber/index.js b/collectors/node.d.plugin/node_modules/lib/ber/index.js new file mode 100644 index 0000000..eb69ec5 --- /dev/null +++ b/collectors/node.d.plugin/node_modules/lib/ber/index.js @@ -0,0 +1,18 @@ +// SPDX-License-Identifier: MIT + +var errors = require('./errors') +var types = require('./types') + +var Reader = require('./reader') +var Writer = require('./writer') + +for (var t in types) + if (types.hasOwnProperty(t)) + exports[t] = types[t] + +for (var e in errors) + if (errors.hasOwnProperty(e)) + exports[e] = errors[e] + +exports.Reader = Reader +exports.Writer = Writer diff --git a/collectors/node.d.plugin/node_modules/lib/ber/reader.js b/collectors/node.d.plugin/node_modules/lib/ber/reader.js new file mode 100644 index 0000000..06decf4 --- /dev/null +++ b/collectors/node.d.plugin/node_modules/lib/ber/reader.js @@ -0,0 +1,270 @@ +// SPDX-License-Identifier: MIT + +var assert = require('assert'); + +var ASN1 = require('./types'); +var errors = require('./errors'); + + +///--- Globals + +var InvalidAsn1Error = errors.InvalidAsn1Error; + + + +///--- API + +function Reader(data) { + if (!data || !Buffer.isBuffer(data)) + throw new TypeError('data must be a node Buffer'); + + this._buf = data; + this._size = data.length; + + // These hold the "current" state + this._len = 0; + this._offset = 0; +} + +Object.defineProperty(Reader.prototype, 'length', { + enumerable: true, + get: function () { return (this._len); } +}); + +Object.defineProperty(Reader.prototype, 'offset', { + enumerable: true, + get: function () { return (this._offset); } +}); + +Object.defineProperty(Reader.prototype, 'remain', { + get: function () { return (this._size - this._offset); } +}); + +Object.defineProperty(Reader.prototype, 'buffer', { + get: function () { return (this._buf.slice(this._offset)); } +}); + + +/** + * Reads a single byte and advances offset; you can pass in `true` to make this + * a "peek" operation (i.e., get the byte, but don't advance the offset). + * + * @param {Boolean} peek true means don't move offset. + * @return {Number} the next byte, null if not enough data. + */ +Reader.prototype.readByte = function(peek) { + if (this._size - this._offset < 1) + return null; + + var b = this._buf[this._offset] & 0xff; + + if (!peek) + this._offset += 1; + + return b; +}; + + +Reader.prototype.peek = function() { + return this.readByte(true); +}; + + +/** + * Reads a (potentially) variable length off the BER buffer. This call is + * not really meant to be called directly, as callers have to manipulate + * the internal buffer afterwards. + * + * As a result of this call, you can call `Reader.length`, until the + * next thing called that does a readLength. + * + * @return {Number} the amount of offset to advance the buffer. + * @throws {InvalidAsn1Error} on bad ASN.1 + */ +Reader.prototype.readLength = function(offset) { + if (offset === undefined) + offset = this._offset; + + if (offset >= this._size) + return null; + + var lenB = this._buf[offset++] & 0xff; + if (lenB === null) + return null; + + if ((lenB & 0x80) == 0x80) { + lenB &= 0x7f; + + if (lenB == 0) + throw InvalidAsn1Error('Indefinite length not supported'); + + if (lenB > 4) + throw InvalidAsn1Error('encoding too long'); + + if (this._size - offset < lenB) + return null; + + this._len = 0; + for (var i = 0; i < lenB; i++) + this._len = (this._len << 8) + (this._buf[offset++] & 0xff); + + } else { + // Wasn't a variable length + this._len = lenB; + } + + return offset; +}; + + +/** + * Parses the next sequence in this BER buffer. + * + * To get the length of the sequence, call `Reader.length`. + * + * @return {Number} the sequence's tag. + */ +Reader.prototype.readSequence = function(tag) { + var seq = this.peek(); + if (seq === null) + return null; + if (tag !== undefined && tag !== seq) + throw InvalidAsn1Error('Expected 0x' + tag.toString(16) + + ': got 0x' + seq.toString(16)); + + var o = this.readLength(this._offset + 1); // stored in `length` + if (o === null) + return null; + + this._offset = o; + return seq; +}; + + +Reader.prototype.readInt = function(tag) { + if (typeof(tag) !== 'number') + tag = ASN1.Integer; + + return this._readTag(ASN1.Integer); +}; + + +Reader.prototype.readBoolean = function(tag) { + if (typeof(tag) !== 'number') + tag = ASN1.Boolean; + + return (this._readTag(tag) === 0 ? false : true); +}; + + +Reader.prototype.readEnumeration = function(tag) { + if (typeof(tag) !== 'number') + tag = ASN1.Enumeration; + + return this._readTag(ASN1.Enumeration); +}; + + +Reader.prototype.readString = function(tag, retbuf) { + if (!tag) + tag = ASN1.OctetString; + + var b = this.peek(); + if (b === null) + return null; + + if (b !== tag) + throw InvalidAsn1Error('Expected 0x' + tag.toString(16) + + ': got 0x' + b.toString(16)); + + var o = this.readLength(this._offset + 1); // stored in `length` + + if (o === null) + return null; + + if (this.length > this._size - o) + return null; + + this._offset = o; + + if (this.length === 0) + return retbuf ? new Buffer(0) : ''; + + var str = this._buf.slice(this._offset, this._offset + this.length); + this._offset += this.length; + + return retbuf ? str : str.toString('utf8'); +}; + +Reader.prototype.readOID = function(tag) { + if (!tag) + tag = ASN1.OID; + + var b = this.readString(tag, true); + if (b === null) + return null; + + var values = []; + var value = 0; + + for (var i = 0; i < b.length; i++) { + var byte = b[i] & 0xff; + + value <<= 7; + value += byte & 0x7f; + if ((byte & 0x80) == 0) { + values.push(value >>> 0); + value = 0; + } + } + + value = values.shift(); + values.unshift(value % 40); + values.unshift((value / 40) >> 0); + + return values.join('.'); +}; + + +Reader.prototype._readTag = function(tag) { + assert.ok(tag !== undefined); + + var b = this.peek(); + + if (b === null) + return null; + + if (b !== tag) + throw InvalidAsn1Error('Expected 0x' + tag.toString(16) + + ': got 0x' + b.toString(16)); + + var o = this.readLength(this._offset + 1); // stored in `length` + if (o === null) + return null; + + if (this.length > 4) + throw InvalidAsn1Error('Integer too long: ' + this.length); + + if (this.length > this._size - o) + return null; + this._offset = o; + + var fb = this._buf[this._offset]; + var value = 0; + + for (var i = 0; i < this.length; i++) { + value <<= 8; + value |= (this._buf[this._offset++] & 0xff); + } + + if ((fb & 0x80) == 0x80 && i !== 4) + value -= (1 << (i * 8)); + + return value >> 0; +}; + + + +///--- Exported API + +module.exports = Reader; diff --git a/collectors/node.d.plugin/node_modules/lib/ber/types.js b/collectors/node.d.plugin/node_modules/lib/ber/types.js new file mode 100644 index 0000000..7519ddc --- /dev/null +++ b/collectors/node.d.plugin/node_modules/lib/ber/types.js @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: MIT + +module.exports = { + EOC: 0, + Boolean: 1, + Integer: 2, + BitString: 3, + OctetString: 4, + Null: 5, + OID: 6, + ObjectDescriptor: 7, + External: 8, + Real: 9, + Enumeration: 10, + PDV: 11, + Utf8String: 12, + RelativeOID: 13, + Sequence: 16, + Set: 17, + NumericString: 18, + PrintableString: 19, + T61String: 20, + VideotexString: 21, + IA5String: 22, + UTCTime: 23, + GeneralizedTime: 24, + GraphicString: 25, + VisibleString: 26, + GeneralString: 28, + UniversalString: 29, + CharacterString: 30, + BMPString: 31, + Constructor: 32, + Context: 128 +} diff --git a/collectors/node.d.plugin/node_modules/lib/ber/writer.js b/collectors/node.d.plugin/node_modules/lib/ber/writer.js new file mode 100644 index 0000000..d3a718f --- /dev/null +++ b/collectors/node.d.plugin/node_modules/lib/ber/writer.js @@ -0,0 +1,318 @@ +// SPDX-License-Identifier: MIT + +var assert = require('assert'); +var ASN1 = require('./types'); +var errors = require('./errors'); + + +///--- Globals + +var InvalidAsn1Error = errors.InvalidAsn1Error; + +var DEFAULT_OPTS = { + size: 1024, + growthFactor: 8 +}; + + +///--- Helpers + +function merge(from, to) { + assert.ok(from); + assert.equal(typeof(from), 'object'); + assert.ok(to); + assert.equal(typeof(to), 'object'); + + var keys = Object.getOwnPropertyNames(from); + keys.forEach(function(key) { + if (to[key]) + return; + + var value = Object.getOwnPropertyDescriptor(from, key); + Object.defineProperty(to, key, value); + }); + + return to; +} + + + +///--- API + +function Writer(options) { + options = merge(DEFAULT_OPTS, options || {}); + + this._buf = new Buffer(options.size || 1024); + this._size = this._buf.length; + this._offset = 0; + this._options = options; + + // A list of offsets in the buffer where we need to insert + // sequence tag/len pairs. + this._seq = []; +} + +Object.defineProperty(Writer.prototype, 'buffer', { + get: function () { + if (this._seq.length) + throw new InvalidAsn1Error(this._seq.length + ' unended sequence(s)'); + + return (this._buf.slice(0, this._offset)); + } +}); + +Writer.prototype.writeByte = function(b) { + if (typeof(b) !== 'number') + throw new TypeError('argument must be a Number'); + + this._ensure(1); + this._buf[this._offset++] = b; +}; + + +Writer.prototype.writeInt = function(i, tag) { + if (typeof(i) !== 'number') + throw new TypeError('argument must be a Number'); + if (typeof(tag) !== 'number') + tag = ASN1.Integer; + + var sz = 4; + + while ((((i & 0xff800000) === 0) || ((i & 0xff800000) === 0xff800000 >> 0)) && + (sz > 1)) { + sz--; + i <<= 8; + } + + if (sz > 4) + throw new InvalidAsn1Error('BER ints cannot be > 0xffffffff'); + + this._ensure(2 + sz); + this._buf[this._offset++] = tag; + this._buf[this._offset++] = sz; + + while (sz-- > 0) { + this._buf[this._offset++] = ((i & 0xff000000) >>> 24); + i <<= 8; + } + +}; + + +Writer.prototype.writeNull = function() { + this.writeByte(ASN1.Null); + this.writeByte(0x00); +}; + + +Writer.prototype.writeEnumeration = function(i, tag) { + if (typeof(i) !== 'number') + throw new TypeError('argument must be a Number'); + if (typeof(tag) !== 'number') + tag = ASN1.Enumeration; + + return this.writeInt(i, tag); +}; + + +Writer.prototype.writeBoolean = function(b, tag) { + if (typeof(b) !== 'boolean') + throw new TypeError('argument must be a Boolean'); + if (typeof(tag) !== 'number') + tag = ASN1.Boolean; + + this._ensure(3); + this._buf[this._offset++] = tag; + this._buf[this._offset++] = 0x01; + this._buf[this._offset++] = b ? 0xff : 0x00; +}; + + +Writer.prototype.writeString = function(s, tag) { + if (typeof(s) !== 'string') + throw new TypeError('argument must be a string (was: ' + typeof(s) + ')'); + if (typeof(tag) !== 'number') + tag = ASN1.OctetString; + + var len = Buffer.byteLength(s); + this.writeByte(tag); + this.writeLength(len); + if (len) { + this._ensure(len); + this._buf.write(s, this._offset); + this._offset += len; + } +}; + + +Writer.prototype.writeBuffer = function(buf, tag) { + if (!Buffer.isBuffer(buf)) + throw new TypeError('argument must be a buffer'); + + // If no tag is specified we will assume `buf` already contains tag and length + if (typeof(tag) === 'number') { + this.writeByte(tag); + this.writeLength(buf.length); + } + + this._ensure(buf.length); + buf.copy(this._buf, this._offset, 0, buf.length); + this._offset += buf.length; +}; + + +Writer.prototype.writeStringArray = function(strings, tag) { + if (! (strings instanceof Array)) + throw new TypeError('argument must be an Array[String]'); + + var self = this; + strings.forEach(function(s) { + self.writeString(s, tag); + }); +}; + +// This is really to solve DER cases, but whatever for now +Writer.prototype.writeOID = function(s, tag) { + if (typeof(s) !== 'string') + throw new TypeError('argument must be a string'); + if (typeof(tag) !== 'number') + tag = ASN1.OID; + + if (!/^([0-9]+\.){3,}[0-9]+$/.test(s)) + throw new Error('argument is not a valid OID string'); + + function encodeOctet(bytes, octet) { + if (octet < 128) { + bytes.push(octet); + } else if (octet < 16384) { + bytes.push((octet >>> 7) | 0x80); + bytes.push(octet & 0x7F); + } else if (octet < 2097152) { + bytes.push((octet >>> 14) | 0x80); + bytes.push(((octet >>> 7) | 0x80) & 0xFF); + bytes.push(octet & 0x7F); + } else if (octet < 268435456) { + bytes.push((octet >>> 21) | 0x80); + bytes.push(((octet >>> 14) | 0x80) & 0xFF); + bytes.push(((octet >>> 7) | 0x80) & 0xFF); + bytes.push(octet & 0x7F); + } else { + bytes.push(((octet >>> 28) | 0x80) & 0xFF); + bytes.push(((octet >>> 21) | 0x80) & 0xFF); + bytes.push(((octet >>> 14) | 0x80) & 0xFF); + bytes.push(((octet >>> 7) | 0x80) & 0xFF); + bytes.push(octet & 0x7F); + } + } + + var tmp = s.split('.'); + var bytes = []; + bytes.push(parseInt(tmp[0], 10) * 40 + parseInt(tmp[1], 10)); + tmp.slice(2).forEach(function(b) { + encodeOctet(bytes, parseInt(b, 10)); + }); + + var self = this; + this._ensure(2 + bytes.length); + this.writeByte(tag); + this.writeLength(bytes.length); + bytes.forEach(function(b) { + self.writeByte(b); + }); +}; + + +Writer.prototype.writeLength = function(len) { + if (typeof(len) !== 'number') + throw new TypeError('argument must be a Number'); + + this._ensure(4); + + if (len <= 0x7f) { + this._buf[this._offset++] = len; + } else if (len <= 0xff) { + this._buf[this._offset++] = 0x81; + this._buf[this._offset++] = len; + } else if (len <= 0xffff) { + this._buf[this._offset++] = 0x82; + this._buf[this._offset++] = len >> 8; + this._buf[this._offset++] = len; + } else if (len <= 0xffffff) { + this._buf[this._offset++] = 0x83; + this._buf[this._offset++] = len >> 16; + this._buf[this._offset++] = len >> 8; + this._buf[this._offset++] = len; + } else { + throw new InvalidAsn1Error('Length too long (> 4 bytes)'); + } +}; + +Writer.prototype.startSequence = function(tag) { + if (typeof(tag) !== 'number') + tag = ASN1.Sequence | ASN1.Constructor; + + this.writeByte(tag); + this._seq.push(this._offset); + this._ensure(3); + this._offset += 3; +}; + + +Writer.prototype.endSequence = function() { + var seq = this._seq.pop(); + var start = seq + 3; + var len = this._offset - start; + + if (len <= 0x7f) { + this._shift(start, len, -2); + this._buf[seq] = len; + } else if (len <= 0xff) { + this._shift(start, len, -1); + this._buf[seq] = 0x81; + this._buf[seq + 1] = len; + } else if (len <= 0xffff) { + this._buf[seq] = 0x82; + this._buf[seq + 1] = len >> 8; + this._buf[seq + 2] = len; + } else if (len <= 0xffffff) { + this._shift(start, len, 1); + this._buf[seq] = 0x83; + this._buf[seq + 1] = len >> 16; + this._buf[seq + 2] = len >> 8; + this._buf[seq + 3] = len; + } else { + throw new InvalidAsn1Error('Sequence too long'); + } +}; + + +Writer.prototype._shift = function(start, len, shift) { + assert.ok(start !== undefined); + assert.ok(len !== undefined); + assert.ok(shift); + + this._buf.copy(this._buf, start + shift, start, start + len); + this._offset += shift; +}; + +Writer.prototype._ensure = function(len) { + assert.ok(len); + + if (this._size - this._offset < len) { + var sz = this._size * this._options.growthFactor; + if (sz - this._offset < len) + sz += len; + + var buf = new Buffer(sz); + + this._buf.copy(buf, 0, 0, this._offset); + this._buf = buf; + this._size = sz; + } +}; + + + +///--- Exported API + +module.exports = Writer; |