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Editing File: /usr/local/cpanel/shared/3rdparty/asn1js/asn1-cpanel.js

// ASN.1 JavaScript decoder
// Copyright (c) 2008-2013 Lapo Luchini <lapo@lapo.it>

// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

/*jshint browser: true, strict: true, immed: true, latedef: true, undef: true, regexdash: false */
/*global oids */
(function (undefined) {
"use strict";

/*
Stream.prototype.hexDump = function (start, end, raw) {
 var s = "";
 for (var i = start; i < end; ++i) {
 s += this.hexByte(this.get(i));
 if (raw !== true)
 switch (i & 0xF) {
 case 0x7: s += " "; break;
 case 0xF: s += "\n"; break;
 default: s += " ";
 }
 }
 return s;
};
*/
Stream.prototype.parseStringBMP = function (start, end) {
 var char_codes = [];
 for (var i = start; i < end; i += 2) {
 var high_byte = this.get(i);
 var low_byte = this.get(i + 1);
 char_codes.push( (high_byte << 8) + low_byte );
 }

return String.fromCharCode.apply( String, char_codes );
};
Stream.prototype.parseStringISO = function (start, end) {
 var s = "";
 for (var i = start; i < end; ++i)
 s += String.fromCharCode(this.get(i));
 return s;
};
Stream.prototype.parseStringUTF = function (start, end) {
 var s = "";
 for (var i = start; i < end; ) {
 var c = this.get(i++);
 if (c < 128)
 s += String.fromCharCode(c);
 else if ((c > 191) && (c < 224))
 s += String.fromCharCode(((c & 0x1F) << 6) | (this.get(i++) & 0x3F));
 else
 s += String.fromCharCode(((c & 0x0F) << 12) | ((this.get(i++) & 0x3F) << 6) | (this.get(i++) & 0x3F));
 }
 return s;
};

/*
Stream.prototype.reTime = /^((?:1[89]|2\d)?\d\d)(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])([01]\d|2[0-3])(?:([0-5]\d)(?:([0-5]\d)(?:[.,](\d{1,3}))?)?)?(Z|[-+](?:[0]\d|1[0-2])([0-5]\d)?)?$/;
Stream.prototype.parseTime = function (start, end) {
    var s = this.parseStringISO(start, end),
        m = this.reTime.exec(s);
    if (!m)
        return "Unrecognized time: " + s;
    s = m[1] + "-" + m[2] + "-" + m[3] + " " + m[4];
    if (m[5]) {
        s += ":" + m[5];
        if (m[6]) {
            s += ":" + m[6];
            if (m[7])
                s += "." + m[7];
        }
    }
    if (m[8]) {
        s += " UTC";
        if (m[8] != 'Z') {
            s += m[8];
            if (m[9])
                s += ":" + m[9];
        }
    }
    return s;
};
*/

Stream.prototype.parseInteger = function (start, end) {
 //TODO support negative numbers
 var len = end - start;
 if (len > 4) {
 len <<= 3;
 var s = this.get(start);
 if (s === 0)
 len -= 8;
 else
 while (s < 128) {
 s <<= 1;
 --len;
 }
 return "(" + len + " bit)";
 }
 var n = 0;
 for (var i = start; i < end; ++i)
 n = (n << 8) | this.get(i);
 return n;
};
Stream.prototype.parseBitString = function (start, end) {
 var unusedBit = this.get(start),
 lenBit = ((end - start - 1) << 3) - unusedBit,
 s = "(" + lenBit + " bit)";
 if (lenBit <= 20) {
 var skip = unusedBit;
 s += " ";
 for (var i = end - 1; i > start; --i) {
 var b = this.get(i);
 for (var j = skip; j < 8; ++j)
 s += (b >> j) & 1 ? "1" : "0";
 skip = 0;
 }
 }
 return s;
};
Stream.prototype.parseOctetString = function (start, end) {
 var len = end - start,
 s = "(" + len + " byte) ";
 if (len > hardLimit)
 end = start + hardLimit;
 for (var i = start; i < end; ++i)
 s += this.hexByte(this.get(i)); //TODO: also try Latin1?
 if (len > hardLimit)
 s += ellipsis;
 return s;
};
Stream.prototype.parseOID = function (start, end) {
 var s = '',
 n = 0,
 bits = 0;
 for (var i = start; i < end; ++i) {
 var v = this.get(i);
 n = (n << 7) | (v & 0x7F);
 bits += 7;
 if (!(v & 0x80)) { // finished
 if (s === '') {
 var m = n < 80 ? n < 40 ? 0 : 1 : 2;
 s = m + "." + (n - m * 40);
 } else
 s += "." + ((bits >= 31) ? "bigint" : n);
 n = bits = 0;
 }
 }
 return s;
};

function ASN1(stream, header, length, tag, sub) {
    this.stream = stream;
    this.header = header;
    this.length = length;
    this.tag = tag;
    this.sub = sub;
}

/*
ASN1.prototype.typeName = function () {
    if (this.tag === undefined)
        return "unknown";
    var tagClass = this.tag >> 6,
        tagConstructed = (this.tag >> 5) & 1,
        tagNumber = this.tag & 0x1F;
    switch (tagClass) {
    case 0: // universal
        switch (tagNumber) {
        case 0x00: return "EOC";
        case 0x01: return "BOOLEAN";
        case 0x02: return "INTEGER";
        case 0x03: return "BIT_STRING";
        case 0x04: return "OCTET_STRING";
        case 0x05: return "NULL";
        case 0x06: return "OBJECT_IDENTIFIER";
        case 0x07: return "ObjectDescriptor";
        case 0x08: return "EXTERNAL";
        case 0x09: return "REAL";
        case 0x0A: return "ENUMERATED";
        case 0x0B: return "EMBEDDED_PDV";
        case 0x0C: return "UTF8String";
        case 0x10: return "SEQUENCE";
        case 0x11: return "SET";
        case 0x12: return "NumericString";
        case 0x13: return "PrintableString"; // ASCII subset
        case 0x14: return "TeletexString"; // aka T61String
        case 0x15: return "VideotexString";
        case 0x16: return "IA5String"; // ASCII
        case 0x17: return "UTCTime";
        case 0x18: return "GeneralizedTime";
        case 0x19: return "GraphicString";
        case 0x1A: return "VisibleString"; // ASCII subset
        case 0x1B: return "GeneralString";
        case 0x1C: return "UniversalString";
        case 0x1E: return "BMPString";
        default:   return "Universal_" + tagNumber.toString(16);
        }
    case 1: return "Application_" + tagNumber.toString(16);
    case 2: return "[" + tagNumber + "]"; // Context
    case 3: return "Private_" + tagNumber.toString(16);
    }
};
*/

ASN1.prototype.reSeemsASCII = /^[ -~]+$/;
ASN1.prototype.content = function () {
    if (this.tag === undefined)
        return null;
    var tagClass = this.tag >> 6,
        tagNumber = this.tag & 0x1F,
        content = this.posContent(),
        len = Math.abs(this.length);
    if (tagClass !== 0) { // universal
        if (this.sub !== null)
            return "(" + this.sub.length + " elem)";
        //TODO: TRY TO PARSE ASCII STRING
        var s = this.stream.parseStringISO(content, content + Math.min(len, hardLimit));
        if (this.reSeemsASCII.test(s))
            return s.substring(0, 2 * hardLimit) + ((s.length > 2 * hardLimit) ? ellipsis : "");
        else
            return this.stream.parseOctetString(content, content + len);
    }
    switch (tagNumber) {
    case 0x01: // BOOLEAN
        return (this.stream.get(content) === 0) ? "false" : "true";
    case 0x02: // INTEGER
        return this.stream.parseInteger(content, content + len);
    case 0x03: // BIT_STRING
        return this.sub ? "(" + this.sub.length + " elem)" :
            this.stream.parseBitString(content, content + len);
    case 0x04: // OCTET_STRING
        return this.sub ? "(" + this.sub.length + " elem)" :
            this.stream.parseOctetString(content, content + len);
    //case 0x05: // NULL
    case 0x06: // OBJECT_IDENTIFIER
        return this.stream.parseOID(content, content + len);
    //case 0x07: // ObjectDescriptor
    //case 0x08: // EXTERNAL
    //case 0x09: // REAL
    //case 0x0A: // ENUMERATED
    //case 0x0B: // EMBEDDED_PDV
    case 0x10: // SEQUENCE
    case 0x11: // SET
        return "(" + this.sub.length + " elem)";
    case 0x0C: // UTF8String
        return this.stream.parseStringUTF(content, content + len);
    case 0x12: // NumericString
    case 0x13: // PrintableString
    case 0x14: // TeletexString
    case 0x15: // VideotexString
    case 0x16: // IA5String
    //case 0x19: // GraphicString
    case 0x1A: // VisibleString
    //case 0x1B: // GeneralString
    //case 0x1C: // UniversalString
        return this.stream.parseStringISO(content, content + len);
    case 0x17: // UTCTime
    case 0x18: // GeneralizedTime
        return this.stream.parseTime(content, content + len);
    case 0x1E: // BMPString
        return this.stream.parseStringBMP(content, content + len);
    }
    return null;
};

/*
ASN1.prototype.toString = function () {
 return this.typeName() + "@" + this.stream.pos + "[header:" + this.header + ",length:" + this.length + ",sub:" + ((this.sub === null) ? 'null' : this.sub.length) + "]";
};
ASN1.prototype.print = function (indent) {
 if (indent === undefined) indent = '';
 document.writeln(indent + this);
 if (this.sub !== null) {
 indent += ' ';
 for (var i = 0, max = this.sub.length; i < max; ++i)
 this.sub[i].print(indent);
 }
};
ASN1.prototype.toPrettyString = function (indent) {
 if (indent === undefined) indent = '';
 var s = indent + this.typeName() + " @" + this.stream.pos;
 if (this.length >= 0)
 s += "+";
 s += this.length;
 if (this.tag & 0x20)
 s += " (constructed)";
 else if (((this.tag == 0x03) || (this.tag == 0x04)) && (this.sub !== null))
 s += " (encapsulates)";
 s += "\n";
 if (this.sub !== null) {
 indent += ' ';
 for (var i = 0, max = this.sub.length; i < max; ++i)
 s += this.sub[i].toPrettyString(indent);
 }
 return s;
};
ASN1.prototype.toDOM = function () {
 var node = DOM.tag("div", "node");
 node.asn1 = this;
 var head = DOM.tag("div", "head");
 var s = this.typeName().replace(/_/g, " ");
 head.innerHTML = s;
 var content = this.content();
 if (content !== null) {
 content = String(content).replace(/</g, "&lt;");
 var preview = DOM.tag("span", "preview");
 preview.appendChild(DOM.text(content));
 head.appendChild(preview);
 }
 node.appendChild(head);
 this.node = node;
 this.head = head;
 var value = DOM.tag("div", "value");
 s = "Offset: " + this.stream.pos + " ";
 s += "Length: " + this.header + "+";
 if (this.length >= 0)
 s += this.length;
 else
 s += (-this.length) + " (undefined)";
 if (this.tag & 0x20)
 s += " (constructed)";
 else if (((this.tag == 0x03) || (this.tag == 0x04)) && (this.sub !== null))
 s += " (encapsulates)";
 //TODO if (this.tag == 0x03) s += "Unused bits: "
 if (content !== null) {
 s += " Value: " + content + "";
 if ((typeof oids === 'object') && (this.tag == 0x06)) {
 var oid = oids[content];
 if (oid) {
 if (oid.d) s += " " + oid.d;
 if (oid.c) s += " " + oid.c;
 if (oid.w) s += " (warning!)";
 }
 }
 }
 value.innerHTML = s;
 node.appendChild(value);
 var sub = DOM.tag("div", "sub");
 if (this.sub !== null) {
 for (var i = 0, max = this.sub.length; i < max; ++i)
 sub.appendChild(this.sub[i].toDOM());
 }
 node.appendChild(sub);
 head.onclick = function () {
 node.className = (node.className == "node collapsed") ? "node" : "node collapsed";
 };
 return node;
};
*/

ASN1.prototype.posStart = function () {
    return this.stream.pos;
};
ASN1.prototype.posContent = function () {
    return this.stream.pos + this.header;
};
ASN1.prototype.posEnd = function () {
    return this.stream.pos + this.header + Math.abs(this.length);
};

/*
ASN1.prototype.fakeHover = function (current) {
 this.node.className += " hover";
 if (current)
 this.head.className += " hover";
};
ASN1.prototype.fakeOut = function (current) {
 var re = / ?hover/;
 this.node.className = this.node.className.replace(re, "");
 if (current)
 this.head.className = this.head.className.replace(re, "");
};
ASN1.prototype.toHexDOM_sub = function (node, className, stream, start, end) {
 if (start >= end)
 return;
 var sub = DOM.tag("span", className);
 sub.appendChild(DOM.text(
 stream.hexDump(start, end)));
 node.appendChild(sub);
};
ASN1.prototype.toHexDOM = function (root) {
 var node = DOM.tag("span", "hex");
 if (root === undefined) root = node;
 this.head.hexNode = node;
 this.head.onmouseover = function () { this.hexNode.className = "hexCurrent"; };
 this.head.onmouseout = function () { this.hexNode.className = "hex"; };
 node.asn1 = this;
 node.onmouseover = function () {
 var current = !root.selected;
 if (current) {
 root.selected = this.asn1;
 this.className = "hexCurrent";
 }
 this.asn1.fakeHover(current);
 };
 node.onmouseout = function () {
 var current = (root.selected == this.asn1);
 this.asn1.fakeOut(current);
 if (current) {
 root.selected = null;
 this.className = "hex";
 }
 };
 this.toHexDOM_sub(node, "tag", this.stream, this.posStart(), this.posStart() + 1);
 this.toHexDOM_sub(node, (this.length >= 0) ? "dlen" : "ulen", this.stream, this.posStart() + 1, this.posContent());
 if (this.sub === null)
 node.appendChild(DOM.text(
 this.stream.hexDump(this.posContent(), this.posEnd())));
 else if (this.sub.length > 0) {
 var first = this.sub[0];
 var last = this.sub[this.sub.length - 1];
 this.toHexDOM_sub(node, "intro", this.stream, this.posContent(), first.posStart());
 for (var i = 0, max = this.sub.length; i < max; ++i)
 node.appendChild(this.sub[i].toHexDOM(root));
 this.toHexDOM_sub(node, "outro", this.stream, last.posEnd(), this.posEnd());
 }
 return node;
};
ASN1.prototype.toHexString = function (root) {
 return this.stream.hexDump(this.posStart(), this.posEnd(), true);
};
*/
ASN1.decodeLength = function (stream) {
 var buf = stream.get(),
 len = buf & 0x7F;
 if (len == buf)
 return len;
 if (len > 3)
 throw "Length over 24 bits not supported at position " + (stream.pos - 1);
 if (len === 0)
 return -1; // undefined
 buf = 0;
 for (var i = 0; i < len; ++i)
 buf = (buf << 8) | stream.get();
 return buf;
};

ASN1.decode = function (stream) {
 if (!(stream instanceof Stream))
 stream = new Stream(stream, 0);
 var streamStart = new Stream(stream),
 tag = stream.get(),
 len = ASN1.decodeLength(stream),
 header = stream.pos - streamStart.pos,
 sub = null;
 if (tag & 0x20) {
 // it has content, so we decode it
 var start = stream.pos;
 if (tag == 0x03) stream.get(); // skip BitString unused bits, must be in [0, 7]
 sub = [];
 if (len >= 0) {
 // definite length
 var end = start + len;
 while (stream.pos < end)
 sub[sub.length] = ASN1.decode(stream);
 if (stream.pos != end)
 throw "Content size is not correct for container starting at offset " + start;
 } else {
 // undefined length
 try {
 for (;;) {
 var s = ASN1.decode(stream);
 if (s.tag === 0)
 break;
 sub[sub.length] = s;
 }
 len = start - stream.pos;
 } catch (e) {
 throw "Exception while decoding undefined length content: " + e;
 }
 }
 } else
 stream.pos += len; // skip content
 return new ASN1(streamStart, header, len, tag, sub);
};

/*
ASN1.test = function () {
 var test = [
 { value: [0x27], expected: 0x27 },
 { value: [0x81, 0xC9], expected: 0xC9 },
 { value: [0x83, 0xFE, 0xDC, 0xBA], expected: 0xFEDCBA }
 ];
 for (var i = 0, max = test.length; i < max; ++i) {
 var pos = 0,
 stream = new Stream(test[i].value, 0),
 res = ASN1.decodeLength(stream);
 if (res != test[i].expected)
 document.write("In test[" + i + "] expected " + test[i].expected + " got " + res + "\n");
 }
};
*/

// export globals
window.ASN1 = ASN1;
})();

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