@push.rocks/smartproxy
Version:
A powerful proxy package with unified route-based configuration for high traffic management. Features include SSL/TLS support, flexible routing patterns, WebSocket handling, advanced security options, and automatic ACME certificate management.
342 lines • 27.6 kB
JavaScript
import * as plugins from '../../plugins.js';
import { matchRouteDomain, calculateRouteSpecificity } from './route-utils.js';
import { DomainMatcher, PathMatcher, IpMatcher } from './matchers/index.js';
/**
* Shared RouteManager used by both SmartProxy and NetworkProxy
*
* This provides a unified implementation for route management,
* route matching, and port handling.
*/
export class SharedRouteManager extends plugins.EventEmitter {
constructor(options) {
super();
this.routes = [];
this.portMap = new Map();
/**
* Memoization cache for expanded port ranges
*/
this.portRangeCache = new Map();
// Set up logger (use console if not provided)
this.logger = options.logger || {
info: console.log,
warn: console.warn,
error: console.error,
debug: options.enableDetailedLogging ? console.log : undefined
};
this.enableDetailedLogging = options.enableDetailedLogging || false;
// Initialize routes if provided
if (options.routes) {
this.updateRoutes(options.routes);
}
}
/**
* Update routes with new configuration
*/
updateRoutes(routes = []) {
// Sort routes by priority (higher first)
this.routes = [...(routes || [])].sort((a, b) => {
const priorityA = a.priority ?? 0;
const priorityB = b.priority ?? 0;
return priorityB - priorityA;
});
// Rebuild port mapping for fast lookups
this.rebuildPortMap();
this.logger.info(`Updated RouteManager with ${this.routes.length} routes`);
}
/**
* Get all routes
*/
getRoutes() {
return [...this.routes];
}
/**
* Rebuild the port mapping for fast lookups
* Also logs information about the ports being listened on
*/
rebuildPortMap() {
this.portMap.clear();
this.portRangeCache.clear(); // Clear cache when rebuilding
// Track ports for logging
const portToRoutesMap = new Map();
for (const route of this.routes) {
const ports = this.expandPortRange(route.match.ports);
// Skip if no ports were found
if (ports.length === 0) {
this.logger.warn(`Route ${route.name || 'unnamed'} has no valid ports to listen on`);
continue;
}
for (const port of ports) {
// Add to portMap for routing
if (!this.portMap.has(port)) {
this.portMap.set(port, []);
}
this.portMap.get(port).push(route);
// Add to tracking for logging
if (!portToRoutesMap.has(port)) {
portToRoutesMap.set(port, []);
}
portToRoutesMap.get(port).push(route.name || 'unnamed');
}
}
// Log summary of ports and routes
const totalPorts = this.portMap.size;
const totalRoutes = this.routes.length;
this.logger.info(`Route manager configured with ${totalRoutes} routes across ${totalPorts} ports`);
// Log port details if detailed logging is enabled
if (this.enableDetailedLogging) {
for (const [port, routes] of this.portMap.entries()) {
this.logger.info(`Port ${port}: ${routes.length} routes (${portToRoutesMap.get(port).join(', ')})`);
}
}
}
/**
* Expand a port range specification into an array of individual ports
* Uses caching to improve performance for frequently used port ranges
*
* @public - Made public to allow external code to interpret port ranges
*/
expandPortRange(portRange) {
// For simple number, return immediately
if (typeof portRange === 'number') {
return [portRange];
}
// Create a cache key for this port range
const cacheKey = JSON.stringify(portRange);
// Check if we have a cached result
if (this.portRangeCache.has(cacheKey)) {
return this.portRangeCache.get(cacheKey);
}
// Process the port range
let result = [];
if (Array.isArray(portRange)) {
// Handle array of port objects or numbers
result = portRange.flatMap(item => {
if (typeof item === 'number') {
return [item];
}
else if (typeof item === 'object' && 'from' in item && 'to' in item) {
// Handle port range object - check valid range
if (item.from > item.to) {
this.logger.warn(`Invalid port range: from (${item.from}) > to (${item.to})`);
return [];
}
// Handle port range object
const ports = [];
for (let p = item.from; p <= item.to; p++) {
ports.push(p);
}
return ports;
}
return [];
});
}
// Cache the result
this.portRangeCache.set(cacheKey, result);
return result;
}
/**
* Get all ports that should be listened on
* This method automatically infers all required ports from route configurations
*/
getListeningPorts() {
// Return the unique set of ports from all routes
return Array.from(this.portMap.keys());
}
/**
* Get all routes for a given port
*/
getRoutesForPort(port) {
return this.portMap.get(port) || [];
}
/**
* Find the matching route for a connection
*/
findMatchingRoute(context) {
// Get routes for this port if using port-based filtering
const routesToCheck = context.port
? (this.portMap.get(context.port) || [])
: this.routes;
// Find the first matching route based on priority order
for (const route of routesToCheck) {
if (this.matchesRoute(route, context)) {
return { route };
}
}
return null;
}
/**
* Check if a route matches the given context
*/
matchesRoute(route, context) {
// Skip disabled routes
if (route.enabled === false) {
return false;
}
// Check port match if provided in context
if (context.port !== undefined) {
const ports = this.expandPortRange(route.match.ports);
if (!ports.includes(context.port)) {
return false;
}
}
// Check domain match if specified
if (route.match.domains && context.domain) {
const domains = Array.isArray(route.match.domains)
? route.match.domains
: [route.match.domains];
if (!domains.some(domainPattern => DomainMatcher.match(domainPattern, context.domain))) {
return false;
}
}
// Check path match if specified
if (route.match.path && context.path) {
if (!PathMatcher.match(route.match.path, context.path).matches) {
return false;
}
}
// Check client IP match if specified
if (route.match.clientIp && context.clientIp) {
if (!route.match.clientIp.some(ip => IpMatcher.match(ip, context.clientIp))) {
return false;
}
}
// Check TLS version match if specified
if (route.match.tlsVersion && context.tlsVersion) {
if (!route.match.tlsVersion.includes(context.tlsVersion)) {
return false;
}
}
// Check header match if specified
if (route.match.headers && context.headers) {
for (const [headerName, expectedValue] of Object.entries(route.match.headers)) {
const actualValue = context.headers[headerName.toLowerCase()];
// If header doesn't exist, no match
if (actualValue === undefined) {
return false;
}
// Match against string or regex
if (typeof expectedValue === 'string') {
if (actualValue !== expectedValue) {
return false;
}
}
else if (expectedValue instanceof RegExp) {
if (!expectedValue.test(actualValue)) {
return false;
}
}
}
}
// All criteria matched
return true;
}
/**
* Validate the route configuration and return any warnings
*/
validateConfiguration() {
const warnings = [];
const duplicatePorts = new Map();
// Check for routes with the same exact match criteria
for (let i = 0; i < this.routes.length; i++) {
for (let j = i + 1; j < this.routes.length; j++) {
const route1 = this.routes[i];
const route2 = this.routes[j];
// Check if route match criteria are the same
if (this.areMatchesSimilar(route1.match, route2.match)) {
warnings.push(`Routes "${route1.name || i}" and "${route2.name || j}" have similar match criteria. ` +
`The route with higher priority (${Math.max(route1.priority || 0, route2.priority || 0)}) will be used.`);
}
}
}
// Check for routes that may never be matched due to priority
for (let i = 0; i < this.routes.length; i++) {
const route = this.routes[i];
const higherPriorityRoutes = this.routes.filter(r => (r.priority || 0) > (route.priority || 0));
for (const higherRoute of higherPriorityRoutes) {
if (this.isRouteShadowed(route, higherRoute)) {
warnings.push(`Route "${route.name || i}" may never be matched because it is shadowed by ` +
`higher priority route "${higherRoute.name || 'unnamed'}"`);
break;
}
}
}
return warnings;
}
/**
* Check if two route matches are similar (potential conflict)
*/
areMatchesSimilar(match1, match2) {
// Check port overlap
const ports1 = new Set(this.expandPortRange(match1.ports));
const ports2 = new Set(this.expandPortRange(match2.ports));
let havePortOverlap = false;
for (const port of ports1) {
if (ports2.has(port)) {
havePortOverlap = true;
break;
}
}
if (!havePortOverlap) {
return false;
}
// Check domain overlap
if (match1.domains && match2.domains) {
const domains1 = Array.isArray(match1.domains) ? match1.domains : [match1.domains];
const domains2 = Array.isArray(match2.domains) ? match2.domains : [match2.domains];
// Check if any domain pattern from match1 could match any from match2
let haveDomainOverlap = false;
for (const domain1 of domains1) {
for (const domain2 of domains2) {
if (domain1 === domain2 ||
(domain1.includes('*') || domain2.includes('*'))) {
haveDomainOverlap = true;
break;
}
}
if (haveDomainOverlap)
break;
}
if (!haveDomainOverlap) {
return false;
}
}
else if (match1.domains || match2.domains) {
// One has domains, the other doesn't - they could overlap
// The one with domains is more specific, so it's not exactly a conflict
return false;
}
// Check path overlap
if (match1.path && match2.path) {
// This is a simplified check - in a real implementation,
// you'd need to check if the path patterns could match the same paths
return match1.path === match2.path ||
match1.path.includes('*') ||
match2.path.includes('*');
}
else if (match1.path || match2.path) {
// One has a path, the other doesn't
return false;
}
// If we get here, the matches have significant overlap
return true;
}
/**
* Check if a route is completely shadowed by a higher priority route
*/
isRouteShadowed(route, higherPriorityRoute) {
// If they don't have similar match criteria, no shadowing occurs
if (!this.areMatchesSimilar(route.match, higherPriorityRoute.match)) {
return false;
}
// If higher priority route has more specific criteria, no shadowing
const routeSpecificity = calculateRouteSpecificity(route.match);
const higherRouteSpecificity = calculateRouteSpecificity(higherPriorityRoute.match);
if (higherRouteSpecificity > routeSpecificity) {
return false;
}
// If higher priority route is equally or less specific but has higher priority,
// it shadows the lower priority route
return true;
}
}
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