enigma-bbs/core/acs.js

/* jslint node: true */
'use strict';

//	ENiGMA½
const checkAcs	= require('./acs_parser.js').parse;
const Log		= require('./logger.js').log;

//	deps
const assert	= require('assert');
const _			= require('lodash');

class ACS {
    constructor(client) {
        this.client = client;
    }

    check(acs, scope, defaultAcs) {
        acs = acs ? acs[scope] : defaultAcs;
        acs = acs || defaultAcs;
        try {
            return checkAcs(acs, { client : this.client } );
        } catch(e) {
            Log.warn( { exception : e, acs : acs }, 'Exception caught checking ACS');
            return false;
        }
    }

    //
    //	Message Conferences & Areas
    //
    hasMessageConfRead(conf) {
        return this.check(conf.acs, 'read', ACS.Defaults.MessageConfRead);
    }

    hasMessageAreaRead(area) {
        return this.check(area.acs, 'read', ACS.Defaults.MessageAreaRead);
    }

    //
    //	File Base / Areas
    //
    hasFileAreaRead(area) {
        return this.check(area.acs, 'read', ACS.Defaults.FileAreaRead);
    }

    hasFileAreaWrite(area) {
        return this.check(area.acs, 'write', ACS.Defaults.FileAreaWrite);
    }

    hasFileAreaDownload(area) {
        return this.check(area.acs, 'download', ACS.Defaults.FileAreaDownload);
    }

    getConditionalValue(condArray, memberName) {
        if(!Array.isArray(condArray)) {
            //	no cond array, just use the value
            return condArray;
        }

        assert(_.isString(memberName));

        const matchCond = condArray.find( cond => {
            if(_.has(cond, 'acs')) {
                try {
                    return checkAcs(cond.acs, { client : this.client } );
                } catch(e) {
                    Log.warn( { exception : e, acs : cond }, 'Exception caught checking ACS');
                    return false;
                }
            } else {
                return true;	//	no acs check req.
            }
        });

        if(matchCond) {
            return matchCond[memberName];
        }
    }
}

ACS.Defaults = {
    MessageAreaRead		: 'GM[users]',
    MessageConfRead		: 'GM[users]',

    FileAreaRead		: 'GM[users]',
    FileAreaWrite		: 'GM[sysops]',
    FileAreaDownload	: 'GM[users]',
};

module.exports = ACS;