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// Inspired by best practices from daily update 2026-02-20
/**
* Security: Validates that a key is safe to use for object access.
* Prevents Prototype Pollution attacks by blocking special properties.
* Defined as a local constant to avoid 'this' context issues during destructuring.
*/
const isSafeKey = (key) => {
// Numbers are always safe keys in JavaScript objects
if (typeof key === 'number') return true;
// Only allow safe strings and block dangerous properties
const dangerousKeys = [
'__proto__',
'constructor',
'prototype',
'__defineGetter__',
'__defineSetter__',
'__lookupGetter__',
'__lookupSetter__',
'toString',
'valueOf',
'hasOwnProperty',
'toLocaleString',
'isPrototypeOf',
'propertyIsEnumerable',
];
return typeof key === 'string' && !dangerousKeys.includes(key);
};
module.exports = {
// Clean up memory of dead creeps
cleanMemory: function () {
if (!Memory.creeps) return 0;
let cleaned = 0;
for (const name in Memory.creeps) {
// Security: Use isSafeKey and hasOwnProperty to prevent prototype pollution during iteration
if (
isSafeKey(name) &&
Object.prototype.hasOwnProperty.call(Memory.creeps, name) &&
!Game.creeps[name]
) {
delete Memory.creeps[name];
cleaned++;
}
}
return cleaned;
},
// Exported version of isSafeKey
isSafeKey: isSafeKey,
// Safe memory access with default values
getRoomMemory: function (roomName, key, defaultValue) {
// Security: Validate roomName and key to prevent prototype pollution
if (!isSafeKey(roomName) || !isSafeKey(key)) {
return defaultValue;
}
if (!Memory.rooms[roomName]) {
Memory.rooms[roomName] = {};
}
if (Memory.rooms[roomName][key] === undefined) {
Memory.rooms[roomName][key] = defaultValue;
}
return Memory.rooms[roomName][key];
},
setRoomMemory: function (roomName, key, value) {
// Security: Validate roomName and key to prevent prototype pollution
if (!isSafeKey(roomName) || !isSafeKey(key)) {
return;
}
Eif (!Memory.rooms[roomName]) {
Memory.rooms[roomName] = {};
}
Memory.rooms[roomName][key] = value;
},
clearRoomMemory: function (roomName, key) {
// Security: Validate roomName and key to prevent prototype pollution
if (!isSafeKey(roomName) || !isSafeKey(key)) {
return;
}
if (Memory.rooms[roomName]) {
delete Memory.rooms[roomName][key];
}
},
// Memoization helper for expensive calculations
memoize: function (fn, cacheKey, ttl = 100) {
// Security: Validate cacheKey to prevent prototype pollution
if (!isSafeKey(cacheKey)) {
return fn();
}
if (!Memory.cache) {
Memory.cache = {};
}
const cached = Memory.cache[cacheKey];
if (cached && Game.time - cached.timestamp < ttl) {
return cached.value;
}
const result = fn();
Memory.cache[cacheKey] = {
value: result,
timestamp: Game.time,
};
return result;
},
// Clean up old cache entries
cleanCache: function (maxAge = 500) {
if (!Memory.cache) {
return;
}
for (const key in Memory.cache) {
// Security: Use isSafeKey and hasOwnProperty to prevent prototype pollution during iteration
if (isSafeKey(key) && Object.prototype.hasOwnProperty.call(Memory.cache, key)) {
if (Game.time - Memory.cache[key].timestamp > maxAge) {
delete Memory.cache[key];
}
}
}
},
// Initialize creep memory with role defaults
initCreepMemory: function (creep, role, extraData = {}) {
if (!creep.memory.role) {
creep.memory.role = role;
}
if (!creep.memory.working) {
creep.memory.working = false;
}
for (const key in extraData) {
// Security: Use isSafeKey and hasOwnProperty when merging extraData
if (
isSafeKey(key) &&
Object.prototype.hasOwnProperty.call(extraData, key) &&
creep.memory[key] === undefined
) {
creep.memory[key] = extraData[key];
}
}
},
// Get creep working state
updateWorkingState: function (creep) {
if (!creep.memory.working && creep.store.getFreeCapacity() === 0) {
creep.memory.working = true;
return true;
}
if (creep.memory.working && creep.store.getUsedCapacity() === 0) {
creep.memory.working = false;
return false;
}
return creep.memory.working;
},
};
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