atcheck/lsscanner/new_ubuntu/node_modules_win/sshpk/lib/identity.js

374 lines
9.8 KiB
JavaScript
Executable File

// Copyright 2017 Joyent, Inc.
module.exports = Identity;
var assert = require('assert-plus');
var algs = require('./algs');
var crypto = require('crypto');
var Fingerprint = require('./fingerprint');
var Signature = require('./signature');
var errs = require('./errors');
var util = require('util');
var utils = require('./utils');
var asn1 = require('asn1');
var Buffer = require('safer-buffer').Buffer;
/*JSSTYLED*/
var DNS_NAME_RE = /^([*]|[a-z0-9][a-z0-9\-]{0,62})(?:\.([*]|[a-z0-9][a-z0-9\-]{0,62}))*$/i;
var oids = {};
oids.cn = '2.5.4.3';
oids.o = '2.5.4.10';
oids.ou = '2.5.4.11';
oids.l = '2.5.4.7';
oids.s = '2.5.4.8';
oids.c = '2.5.4.6';
oids.sn = '2.5.4.4';
oids.postalCode = '2.5.4.17';
oids.serialNumber = '2.5.4.5';
oids.street = '2.5.4.9';
oids.x500UniqueIdentifier = '2.5.4.45';
oids.role = '2.5.4.72';
oids.telephoneNumber = '2.5.4.20';
oids.description = '2.5.4.13';
oids.dc = '0.9.2342.19200300.100.1.25';
oids.uid = '0.9.2342.19200300.100.1.1';
oids.mail = '0.9.2342.19200300.100.1.3';
oids.title = '2.5.4.12';
oids.gn = '2.5.4.42';
oids.initials = '2.5.4.43';
oids.pseudonym = '2.5.4.65';
oids.emailAddress = '1.2.840.113549.1.9.1';
var unoids = {};
Object.keys(oids).forEach(function (k) {
unoids[oids[k]] = k;
});
function Identity(opts) {
var self = this;
assert.object(opts, 'options');
assert.arrayOfObject(opts.components, 'options.components');
this.components = opts.components;
this.componentLookup = {};
this.components.forEach(function (c) {
if (c.name && !c.oid)
c.oid = oids[c.name];
if (c.oid && !c.name)
c.name = unoids[c.oid];
if (self.componentLookup[c.name] === undefined)
self.componentLookup[c.name] = [];
self.componentLookup[c.name].push(c);
});
if (this.componentLookup.cn && this.componentLookup.cn.length > 0) {
this.cn = this.componentLookup.cn[0].value;
}
assert.optionalString(opts.type, 'options.type');
if (opts.type === undefined) {
if (this.components.length === 1 &&
this.componentLookup.cn &&
this.componentLookup.cn.length === 1 &&
this.componentLookup.cn[0].value.match(DNS_NAME_RE)) {
this.type = 'host';
this.hostname = this.componentLookup.cn[0].value;
} else if (this.componentLookup.dc &&
this.components.length === this.componentLookup.dc.length) {
this.type = 'host';
this.hostname = this.componentLookup.dc.map(
function (c) {
return (c.value);
}).join('.');
} else if (this.componentLookup.uid &&
this.components.length ===
this.componentLookup.uid.length) {
this.type = 'user';
this.uid = this.componentLookup.uid[0].value;
} else if (this.componentLookup.cn &&
this.componentLookup.cn.length === 1 &&
this.componentLookup.cn[0].value.match(DNS_NAME_RE)) {
this.type = 'host';
this.hostname = this.componentLookup.cn[0].value;
} else if (this.componentLookup.uid &&
this.componentLookup.uid.length === 1) {
this.type = 'user';
this.uid = this.componentLookup.uid[0].value;
} else if (this.componentLookup.mail &&
this.componentLookup.mail.length === 1) {
this.type = 'email';
this.email = this.componentLookup.mail[0].value;
} else if (this.componentLookup.cn &&
this.componentLookup.cn.length === 1) {
this.type = 'user';
this.uid = this.componentLookup.cn[0].value;
} else {
this.type = 'unknown';
}
} else {
this.type = opts.type;
if (this.type === 'host')
this.hostname = opts.hostname;
else if (this.type === 'user')
this.uid = opts.uid;
else if (this.type === 'email')
this.email = opts.email;
else
throw (new Error('Unknown type ' + this.type));
}
}
Identity.prototype.toString = function () {
return (this.components.map(function (c) {
var n = c.name.toUpperCase();
/*JSSTYLED*/
n = n.replace(/=/g, '\\=');
var v = c.value;
/*JSSTYLED*/
v = v.replace(/,/g, '\\,');
return (n + '=' + v);
}).join(', '));
};
Identity.prototype.get = function (name, asArray) {
assert.string(name, 'name');
var arr = this.componentLookup[name];
if (arr === undefined || arr.length === 0)
return (undefined);
if (!asArray && arr.length > 1)
throw (new Error('Multiple values for attribute ' + name));
if (!asArray)
return (arr[0].value);
return (arr.map(function (c) {
return (c.value);
}));
};
Identity.prototype.toArray = function (idx) {
return (this.components.map(function (c) {
return ({
name: c.name,
value: c.value
});
}));
};
/*
* These are from X.680 -- PrintableString allowed chars are in section 37.4
* table 8. Spec for IA5Strings is "1,6 + SPACE + DEL" where 1 refers to
* ISO IR #001 (standard ASCII control characters) and 6 refers to ISO IR #006
* (the basic ASCII character set).
*/
/* JSSTYLED */
var NOT_PRINTABLE = /[^a-zA-Z0-9 '(),+.\/:=?-]/;
/* JSSTYLED */
var NOT_IA5 = /[^\x00-\x7f]/;
Identity.prototype.toAsn1 = function (der, tag) {
der.startSequence(tag);
this.components.forEach(function (c) {
der.startSequence(asn1.Ber.Constructor | asn1.Ber.Set);
der.startSequence();
der.writeOID(c.oid);
/*
* If we fit in a PrintableString, use that. Otherwise use an
* IA5String or UTF8String.
*
* If this identity was parsed from a DN, use the ASN.1 types
* from the original representation (otherwise this might not
* be a full match for the original in some validators).
*/
if (c.asn1type === asn1.Ber.Utf8String ||
c.value.match(NOT_IA5)) {
var v = Buffer.from(c.value, 'utf8');
der.writeBuffer(v, asn1.Ber.Utf8String);
} else if (c.asn1type === asn1.Ber.IA5String ||
c.value.match(NOT_PRINTABLE)) {
der.writeString(c.value, asn1.Ber.IA5String);
} else {
var type = asn1.Ber.PrintableString;
if (c.asn1type !== undefined)
type = c.asn1type;
der.writeString(c.value, type);
}
der.endSequence();
der.endSequence();
});
der.endSequence();
};
function globMatch(a, b) {
if (a === '**' || b === '**')
return (true);
var aParts = a.split('.');
var bParts = b.split('.');
if (aParts.length !== bParts.length)
return (false);
for (var i = 0; i < aParts.length; ++i) {
if (aParts[i] === '*' || bParts[i] === '*')
continue;
if (aParts[i] !== bParts[i])
return (false);
}
return (true);
}
Identity.prototype.equals = function (other) {
if (!Identity.isIdentity(other, [1, 0]))
return (false);
if (other.components.length !== this.components.length)
return (false);
for (var i = 0; i < this.components.length; ++i) {
if (this.components[i].oid !== other.components[i].oid)
return (false);
if (!globMatch(this.components[i].value,
other.components[i].value)) {
return (false);
}
}
return (true);
};
Identity.forHost = function (hostname) {
assert.string(hostname, 'hostname');
return (new Identity({
type: 'host',
hostname: hostname,
components: [ { name: 'cn', value: hostname } ]
}));
};
Identity.forUser = function (uid) {
assert.string(uid, 'uid');
return (new Identity({
type: 'user',
uid: uid,
components: [ { name: 'uid', value: uid } ]
}));
};
Identity.forEmail = function (email) {
assert.string(email, 'email');
return (new Identity({
type: 'email',
email: email,
components: [ { name: 'mail', value: email } ]
}));
};
Identity.parseDN = function (dn) {
assert.string(dn, 'dn');
var parts = [''];
var idx = 0;
var rem = dn;
while (rem.length > 0) {
var m;
/*JSSTYLED*/
if ((m = /^,/.exec(rem)) !== null) {
parts[++idx] = '';
rem = rem.slice(m[0].length);
/*JSSTYLED*/
} else if ((m = /^\\,/.exec(rem)) !== null) {
parts[idx] += ',';
rem = rem.slice(m[0].length);
/*JSSTYLED*/
} else if ((m = /^\\./.exec(rem)) !== null) {
parts[idx] += m[0];
rem = rem.slice(m[0].length);
/*JSSTYLED*/
} else if ((m = /^[^\\,]+/.exec(rem)) !== null) {
parts[idx] += m[0];
rem = rem.slice(m[0].length);
} else {
throw (new Error('Failed to parse DN'));
}
}
var cmps = parts.map(function (c) {
c = c.trim();
var eqPos = c.indexOf('=');
while (eqPos > 0 && c.charAt(eqPos - 1) === '\\')
eqPos = c.indexOf('=', eqPos + 1);
if (eqPos === -1) {
throw (new Error('Failed to parse DN'));
}
/*JSSTYLED*/
var name = c.slice(0, eqPos).toLowerCase().replace(/\\=/g, '=');
var value = c.slice(eqPos + 1);
return ({ name: name, value: value });
});
return (new Identity({ components: cmps }));
};
Identity.fromArray = function (components) {
assert.arrayOfObject(components, 'components');
components.forEach(function (cmp) {
assert.object(cmp, 'component');
assert.string(cmp.name, 'component.name');
if (!Buffer.isBuffer(cmp.value) &&
!(typeof (cmp.value) === 'string')) {
throw (new Error('Invalid component value'));
}
});
return (new Identity({ components: components }));
};
Identity.parseAsn1 = function (der, top) {
var components = [];
der.readSequence(top);
var end = der.offset + der.length;
while (der.offset < end) {
der.readSequence(asn1.Ber.Constructor | asn1.Ber.Set);
var after = der.offset + der.length;
der.readSequence();
var oid = der.readOID();
var type = der.peek();
var value;
switch (type) {
case asn1.Ber.PrintableString:
case asn1.Ber.IA5String:
case asn1.Ber.OctetString:
case asn1.Ber.T61String:
value = der.readString(type);
break;
case asn1.Ber.Utf8String:
value = der.readString(type, true);
value = value.toString('utf8');
break;
case asn1.Ber.CharacterString:
case asn1.Ber.BMPString:
value = der.readString(type, true);
value = value.toString('utf16le');
break;
default:
throw (new Error('Unknown asn1 type ' + type));
}
components.push({ oid: oid, asn1type: type, value: value });
der._offset = after;
}
der._offset = end;
return (new Identity({
components: components
}));
};
Identity.isIdentity = function (obj, ver) {
return (utils.isCompatible(obj, Identity, ver));
};
/*
* API versions for Identity:
* [1,0] -- initial ver
*/
Identity.prototype._sshpkApiVersion = [1, 0];
Identity._oldVersionDetect = function (obj) {
return ([1, 0]);
};