enigma-bbs/misc/acs_parser.pegjs

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{
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const UserProps = require('./user_property.js');
const Log = require('./logger.js').log;
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const User = require('./user.js');
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const _ = require('lodash');
const moment = require('moment');
const client = _.get(options, 'subject.client');
const user = _.get(options, 'subject.user');
function checkAccess(acsCode, value) {
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try {
return {
LC : function isLocalConnection() {
return client && client.isLocal();
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},
AG : function ageGreaterOrEqualThan() {
return !isNaN(value) && user && user.getAge() >= value;
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},
AS : function accountStatus() {
if(!user) {
return false;
}
if(!Array.isArray(value)) {
value = [ value ];
}
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const userAccountStatus = user.getPropertyAsNumber(UserProps.AccountStatus);
return value.map(n => parseInt(n, 10)).includes(userAccountStatus);
},
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EC : function isEncoding() {
const encoding = _.get(client, 'term.outputEncoding', '').toLowerCase();
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switch(value) {
case 0 : return 'cp437' === encoding;
case 1 : return 'utf-8' === encoding;
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default : return false;
}
},
GM : function isOneOfGroups() {
if(!user) {
return false;
}
if(!Array.isArray(value)) {
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return false;
}
return value.some(groupName => user.isGroupMember(groupName));
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},
NN : function isNode() {
if(!client) {
return false;
}
if(!Array.isArray(value)) {
value = [ value ];
}
return value.map(n => parseInt(n, 10)).includes(client.node);
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},
NP : function numberOfPosts() {
if(!user) {
return false;
}
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const postCount = user.getPropertyAsNumber(UserProps.PostCount) || 0;
return !isNaN(value) && postCount >= value;
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},
NC : function numberOfCalls() {
if(!user) {
return false;
}
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const loginCount = user.getPropertyAsNumber(UserProps.LoginCount);
return !isNaN(value) && loginCount >= value;
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},
AA : function accountAge() {
if(!user) {
return false;
}
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const accountCreated = moment(user.getProperty(UserProps.AccountCreated));
const now = moment();
const daysOld = accountCreated.diff(moment(), 'days');
return !isNaN(value) &&
accountCreated.isValid() &&
now.isAfter(accountCreated) &&
daysOld >= value;
},
BU : function bytesUploaded() {
if(!user) {
return false;
}
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const bytesUp = user.getPropertyAsNumber(UserProps.FileUlTotalBytes) || 0;
return !isNaN(value) && bytesUp >= value;
},
UP : function uploads() {
if(!user) {
return false;
}
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const uls = user.getPropertyAsNumber(UserProps.FileUlTotalCount) || 0;
return !isNaN(value) && uls >= value;
},
BD : function bytesDownloaded() {
if(!user) {
return false;
}
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const bytesDown = user.getPropertyAsNumber(UserProps.FileDlTotalBytes) || 0;
return !isNaN(value) && bytesDown >= value;
},
DL : function downloads() {
if(!user) {
return false;
}
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const dls = user.getPropertyAsNumber(UserProps.FileDlTotalCount) || 0;
return !isNaN(value) && dls >= value;
},
NR : function uploadDownloadRatioGreaterThan() {
if(!user) {
return false;
}
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const ulCount = user.getPropertyAsNumber(UserProps.FileUlTotalCount) || 0;
const dlCount = user.getPropertyAsNumber(UserProps.FileDlTotalCount) || 0;
const ratio = ~~((ulCount / dlCount) * 100);
return !isNaN(value) && ratio >= value;
},
KR : function uploadDownloadByteRatioGreaterThan() {
if(!user) {
return false;
}
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const ulBytes = user.getPropertyAsNumber(UserProps.FileUlTotalBytes) || 0;
const dlBytes = user.getPropertyAsNumber(UserProps.FileDlTotalBytes) || 0;
const ratio = ~~((ulBytes / dlBytes) * 100);
return !isNaN(value) && ratio >= value;
},
PC : function postCallRatio() {
if(!user) {
return false;
}
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const postCount = user.getPropertyAsNumber(UserProps.PostCount) || 0;
const loginCount = user.getPropertyAsNumber(UserProps.LoginCount) || 0;
const ratio = ~~((postCount / loginCount) * 100);
return !isNaN(value) && ratio >= value;
},
SC : function isSecureConnection() {
return _.get(client, 'session.isSecure', false);
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},
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AF : function currentAuthFactor() {
if(!user) {
return false;
}
return !isNaN(value) && user.authFactor >= value;
},
AR : function authFactorRequired() {
if(!user) {
return false;
}
switch(value) {
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case 1 : return true;
case 2 : return user.getProperty(UserProps.AuthFactor2OTP) ? true : false;
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default : return false;
}
},
ML : function minutesLeft() {
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// :TODO: implement me!
return false;
},
TH : function termHeight() {
return !isNaN(value) && _.get(client, 'term.termHeight', 0) >= value;
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},
TM : function isOneOfThemes() {
if(!Array.isArray(value)) {
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return false;
}
return value.includes(_.get(client, 'currentTheme.name'));
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},
TT : function isOneOfTermTypes() {
if(!Array.isArray(value)) {
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return false;
}
return value.includes(_.get(client, 'term.termType'));
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},
TW : function termWidth() {
return !isNaN(value) && _.get(client, 'term.termWidth', 0) >= value;
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},
ID : function isUserId() {
if(!user) {
return false;
}
if(!Array.isArray(value)) {
value = [ value ];
}
return value.map(n => parseInt(n, 10)).includes(user.userId);
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},
WD : function isOneOfDayOfWeek() {
if(!Array.isArray(value)) {
value = [ value ];
}
return value.map(n => parseInt(n, 10)).includes(new Date().getDay());
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},
MM : function isMinutesPastMidnight() {
const now = moment();
const midnight = now.clone().startOf('day')
const minutesPastMidnight = now.diff(midnight, 'minutes');
return !isNaN(value) && minutesPastMidnight >= value;
},
AC : function achievementCount() {
if(!user) {
return false;
}
const count = user.getPropertyAsNumber(UserProps.AchievementTotalCount) || 0;
return !isNan(value) && points >= value;
},
AP : function achievementPoints() {
if(!user) {
return false;
}
const points = user.getPropertyAsNumber(UserProps.AchievementTotalPoints) || 0;
return !isNan(value) && points >= value;
}
}[acsCode](value);
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} catch (e) {
const logger = _.get(client, 'log', Log);
logger.warn( { acsCode : acsCode, value : value }, 'Invalid ACS string!');
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return false;
}
}
}
start
= expr
expr
= orExpr
OR
= '|'
AND
= '&'
NOT
= '!'
groupOpen
= '('
groupClose
= ')'
orExpr
= left:andExpr OR right:expr { return left || right; }
/ andExpr
andExpr
= left:notExpr AND? right:expr { return left && right; }
/ notExpr
notExpr
= NOT value:atom { return !value; }
/ atom
atom
= acsCheck
/ groupOpen value:expr groupClose { return value; }
comma
= ','
ws
= ' '
optWs
= ws*
listOpen
= '['
listClose
= ']'
acsCheck
= acs:acsCode a:arg { return checkAccess(acs, a); }
acsCode
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= c:([A-Z][A-Z]) { return c.join(''); }
argVar
= a:[A-Za-z0-9\-_\+]+ { return a.join('') }
commaList
= start:(v:argVar optWs comma optWs { return v; })* last:argVar { return start.concat(last); }
list
= listOpen l:commaList listClose { return l; }
number
= d:([0-9]+) { return parseInt(d.join(''), 10); }
arg
= list
/ num:number?