@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.
453 lines • 36.6 kB
JavaScript
import * as plugins from '../../plugins.js';
/**
* The RouteManager handles all routing decisions based on connections and attributes
*/
export class RouteManager extends plugins.EventEmitter {
constructor(options) {
super();
this.routes = [];
this.portMap = new Map();
/**
* Memoization cache for expanded port ranges
*/
this.portRangeCache = new Map();
// Store options
this.options = options;
// Initialize routes from either source
this.updateRoutes(this.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();
}
/**
* 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) {
console.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;
console.log(`Route manager configured with ${totalRoutes} routes across ${totalPorts} ports`);
// Log port details if detailed logging is enabled
const enableDetailedLogging = this.options.enableDetailedLogging;
if (enableDetailedLogging) {
for (const [port, routes] of this.portMap.entries()) {
console.log(`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) {
console.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) || [];
}
/**
* Get all routes
*/
getAllRoutes() {
return [...this.routes];
}
/**
* Test if a pattern matches a domain using glob matching
*/
matchDomain(pattern, domain) {
// Convert glob pattern to regex
const regexPattern = pattern
.replace(/\./g, '\\.') // Escape dots
.replace(/\*/g, '.*'); // Convert * to .*
const regex = new RegExp(`^${regexPattern}$`, 'i');
return regex.test(domain);
}
/**
* Match a domain against all patterns in a route
*/
matchRouteDomain(route, domain) {
if (!route.match.domains) {
// If no domains specified, match all domains
return true;
}
const patterns = Array.isArray(route.match.domains)
? route.match.domains
: [route.match.domains];
return patterns.some(pattern => this.matchDomain(pattern, domain));
}
/**
* Check if a client IP is allowed by a route's security settings
* @deprecated Security is now checked in route-connection-handler.ts after route matching
*/
isClientIpAllowed(route, clientIp) {
const security = route.security;
if (!security) {
return true; // No security settings means allowed
}
// Check blocked IPs first
if (security.ipBlockList && security.ipBlockList.length > 0) {
for (const pattern of security.ipBlockList) {
if (this.matchIpPattern(pattern, clientIp)) {
return false; // IP is blocked
}
}
}
// If there are allowed IPs, check them
if (security.ipAllowList && security.ipAllowList.length > 0) {
for (const pattern of security.ipAllowList) {
if (this.matchIpPattern(pattern, clientIp)) {
return true; // IP is allowed
}
}
return false; // IP not in allowed list
}
// No allowed IPs specified, so IP is allowed
return true;
}
/**
* Match an IP against a pattern
*/
matchIpPattern(pattern, ip) {
// Normalize IPv6-mapped IPv4 addresses
const normalizedIp = ip.startsWith('::ffff:') ? ip.substring(7) : ip;
const normalizedPattern = pattern.startsWith('::ffff:') ? pattern.substring(7) : pattern;
// Handle exact match with normalized addresses
if (pattern === ip || normalizedPattern === normalizedIp ||
pattern === normalizedIp || normalizedPattern === ip) {
return true;
}
// Handle CIDR notation (e.g., 192.168.1.0/24)
if (pattern.includes('/')) {
return this.matchIpCidr(pattern, normalizedIp) ||
(normalizedPattern !== pattern && this.matchIpCidr(normalizedPattern, normalizedIp));
}
// Handle glob pattern (e.g., 192.168.1.*)
if (pattern.includes('*')) {
const regexPattern = pattern.replace(/\./g, '\\.').replace(/\*/g, '.*');
const regex = new RegExp(`^${regexPattern}$`);
if (regex.test(ip) || regex.test(normalizedIp)) {
return true;
}
// If pattern was normalized, also test with normalized pattern
if (normalizedPattern !== pattern) {
const normalizedRegexPattern = normalizedPattern.replace(/\./g, '\\.').replace(/\*/g, '.*');
const normalizedRegex = new RegExp(`^${normalizedRegexPattern}$`);
return normalizedRegex.test(ip) || normalizedRegex.test(normalizedIp);
}
}
return false;
}
/**
* Match an IP against a CIDR pattern
*/
matchIpCidr(cidr, ip) {
try {
// In a real implementation, you'd use a proper IP library
// This is a simplified implementation
const [subnet, bits] = cidr.split('/');
const mask = parseInt(bits, 10);
// Normalize IPv6-mapped IPv4 addresses
const normalizedIp = ip.startsWith('::ffff:') ? ip.substring(7) : ip;
const normalizedSubnet = subnet.startsWith('::ffff:') ? subnet.substring(7) : subnet;
// Convert IP addresses to numeric values
const ipNum = this.ipToNumber(normalizedIp);
const subnetNum = this.ipToNumber(normalizedSubnet);
// Calculate subnet mask
const maskNum = ~(2 ** (32 - mask) - 1);
// Check if IP is in subnet
return (ipNum & maskNum) === (subnetNum & maskNum);
}
catch (e) {
console.error(`Error matching IP ${ip} against CIDR ${cidr}:`, e);
return false;
}
}
/**
* Convert an IP address to a numeric value
*/
ipToNumber(ip) {
// Normalize IPv6-mapped IPv4 addresses
const normalizedIp = ip.startsWith('::ffff:') ? ip.substring(7) : ip;
const parts = normalizedIp.split('.').map(part => parseInt(part, 10));
return (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8) | parts[3];
}
/**
* Find the matching route for a connection
*/
findMatchingRoute(options) {
const { port, domain, clientIp, path, tlsVersion, skipDomainCheck } = options;
// Get all routes for this port
const routesForPort = this.getRoutesForPort(port);
// Find the first matching route based on priority order
for (const route of routesForPort) {
// Check domain match
// If the route has domain restrictions and we have a domain to check
if (route.match.domains && !skipDomainCheck) {
// If no domain was provided (non-TLS or no SNI), this route doesn't match
if (!domain) {
continue;
}
// If domain is provided but doesn't match the route's domains, skip
if (!this.matchRouteDomain(route, domain)) {
continue;
}
}
// If route has no domain restrictions, it matches all domains
// If skipDomainCheck is true, we skip domain validation for HTTP connections
// Check path match if specified in both route and request
if (path && route.match.path) {
if (!this.matchPath(route.match.path, path)) {
continue;
}
}
// Check client IP match
if (route.match.clientIp && !route.match.clientIp.some(pattern => this.matchIpPattern(pattern, clientIp))) {
continue;
}
// Check TLS version match
if (tlsVersion && route.match.tlsVersion &&
!route.match.tlsVersion.includes(tlsVersion)) {
continue;
}
// All checks passed, this route matches
// NOTE: Security is checked AFTER route matching in route-connection-handler.ts
return { route };
}
return null;
}
/**
* Match a path against a pattern
*/
matchPath(pattern, path) {
// Convert the glob pattern to a regex
const regexPattern = pattern
.replace(/\./g, '\\.') // Escape dots
.replace(/\*/g, '.*') // Convert * to .*
.replace(/\//g, '\\/'); // Escape slashes
const regex = new RegExp(`^${regexPattern}$`);
return regex.test(path);
}
/**
* Domain-based configuration methods have been removed
* as part of the migration to pure route-based configuration
*/
/**
* Validate the route configuration and return any warnings
*/
validateConfiguration() {
const warnings = [];
const duplicatePorts = new Map();
// Check for routes with the same exact match criteria
for (let i = 0; i < this.routes.length; i++) {
for (let j = i + 1; j < this.routes.length; j++) {
const route1 = this.routes[i];
const route2 = this.routes[j];
// Check if route match criteria are the same
if (this.areMatchesSimilar(route1.match, route2.match)) {
warnings.push(`Routes "${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
if (this.isRouteMoreSpecific(higherPriorityRoute.match, route.match)) {
return false;
}
// If higher priority route is equally or less specific but has higher priority,
// it shadows the lower priority route
return true;
}
/**
* Check if route1 is more specific than route2
*/
isRouteMoreSpecific(match1, match2) {
// Check if match1 has more specific criteria
let match1Points = 0;
let match2Points = 0;
// Path is the most specific
if (match1.path)
match1Points += 3;
if (match2.path)
match2Points += 3;
// Domain is next most specific
if (match1.domains)
match1Points += 2;
if (match2.domains)
match2Points += 2;
// Client IP and TLS version are least specific
if (match1.clientIp)
match1Points += 1;
if (match2.clientIp)
match2Points += 1;
if (match1.tlsVersion)
match1Points += 1;
if (match2.tlsVersion)
match2Points += 1;
return match1Points > match2Points;
}
}
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