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/* gpgme.js - Javascript integration for gpgme
* Copyright (C) 2018 Bundesamt für Sicherheit in der Informationstechnik
*
* This file is part of GPGME.
*
* GPGME is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* GPGME is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
* SPDX-License-Identifier: LGPL-2.1+
*
* Author(s):
* Maximilian Krambach <mkrambach@intevation.de>
*/
import { gpgme_error } from './Errors';
/**
* Validates an object containing a signature, as sent by the nativeMessaging
* interface
* @param {Object} sigObject Object as returned by gpgme-json. The definition
* of the expected values are to be found in {@link expKeys}, {@link expSum},
* {@link expNote}.
* @returns {GPGME_Signature|GPGME_Error} Signature Object
* @private
*/
export function createSignature (sigObject){
if (
typeof (sigObject) !=='object' ||
!sigObject.hasOwnProperty('summary') ||
!sigObject.hasOwnProperty('fingerprint') ||
!sigObject.hasOwnProperty('timestamp')
// TODO check if timestamp is mandatory in specification
){
return gpgme_error('SIG_WRONG');
}
let keys = Object.keys(sigObject);
for (let i=0; i< keys.length; i++){
// eslint-disable-next-line no-use-before-define
if ( typeof (sigObject[keys[i]]) !== expKeys[keys[i]] ){
return gpgme_error('SIG_WRONG');
}
}
let sumkeys = Object.keys(sigObject.summary);
for (let i=0; i< sumkeys.length; i++){
// eslint-disable-next-line no-use-before-define
if ( typeof (sigObject.summary[sumkeys[i]]) !== expSum[sumkeys[i]] ){
return gpgme_error('SIG_WRONG');
}
}
if (sigObject.hasOwnProperty('notations')){
if (!Array.isArray(sigObject.notations)){
return gpgme_error('SIG_WRONG');
}
for (let i=0; i < sigObject.notations.length; i++){
let notation = sigObject.notations[i];
let notekeys = Object.keys(notation);
for (let j=0; j < notekeys.length; j++){
// eslint-disable-next-line no-use-before-define
if ( typeof (notation[notekeys[j]]) !== expNote[notekeys[j]] ){
return gpgme_error('SIG_WRONG');
}
}
}
}
return new GPGME_Signature(sigObject);
}
/**
* Representing the details of a signature. The full details as given by
* gpgme-json can be read from the _rawSigObject.
*
* Note to reviewers: This class should be read only except via
* {@link createSignature}
* @protected
* @class
*/
class GPGME_Signature {
constructor (sigObject){
this._rawSigObject = sigObject;
}
/**
* @returns {String} the fingerprint of this signature
*/
get fingerprint (){
if (!this._rawSigObject.fingerprint){
throw gpgme_error('SIG_WRONG');
} else {
return this._rawSigObject.fingerprint;
}
}
/**
* The expiration of this Signature as Javascript date, or null if
* signature does not expire
* @returns {Date | null}
*/
get expiration (){
if (!this._rawSigObject.exp_timestamp){
return null;
}
return new Date(this._rawSigObject.exp_timestamp* 1000);
}
/**
* The creation date of this Signature in Javascript Date
* @returns {Date}
*/
get timestamp (){
return new Date(this._rawSigObject.timestamp * 1000);
}
/**
* The overall validity of the key. If false, errorDetails may contain
* additional information.
*/
get valid () {
if (this._rawSigObject.summary.valid === true){
return true;
} else {
return false;
}
}
/**
* Object with boolean properties giving more information on non-valid
* signatures. Refer to the [gpgme docs]{@link https://www.gnupg.org/documentation/manuals/gpgme/Verify.html}
* for details on the values.
*/
get errorDetails (){
let properties = ['revoked', 'key-expired', 'sig-expired',
'key-missing', 'crl-missing', 'crl-too-old', 'bad-policy',
'sys-error'];
let result = {};
for (let i=0; i< properties.length; i++){
if ( this._rawSigObject.summary.hasOwnProperty(properties[i]) ){
result[properties[i]] = this._rawSigObject.summary[properties[i]];
}
}
return result;
}
}
/**
* Expected keys and their value's type for the signature Object
* @private
*/
const expKeys = {
'wrong_key_usage': 'boolean',
'chain_model': 'boolean',
'summary': 'object',
'is_de_vs': 'boolean',
'status_string':'string',
'fingerprint':'string',
'validity_string': 'string',
'pubkey_algo_name':'string',
'hash_algo_name':'string',
'pka_address':'string',
'status_code':'number',
'timestamp':'number',
'exp_timestamp':'number',
'pka_trust':'number',
'validity':'number',
'validity_reason':'number',
'notations': 'object'
};
/**
* Keys and their value's type for the summary
* @private
*/
const expSum = {
'valid': 'boolean',
'green': 'boolean',
'red': 'boolean',
'revoked': 'boolean',
'key-expired': 'boolean',
'sig-expired': 'boolean',
'key-missing': 'boolean',
'crl-missing': 'boolean',
'crl-too-old': 'boolean',
'bad-policy': 'boolean',
'sys-error': 'boolean',
'sigsum': 'object'
};
/**
* Keys and their value's type for notations objects
* @private
*/
const expNote = {
'human_readable': 'boolean',
'critical':'boolean',
'name': 'string',
'value': 'string',
'flags': 'number'
};
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