21.1.7

changelog.md

@@ -1,5 +1,31 @@
 # Changelog
 
+## 2025-08-19 - 21.1.7 - fix(route-validator)
+Relax domain validation to accept 'localhost', prefix wildcards (e.g. *example.com) and IP literals; add comprehensive domain validation tests
+
+- Allow 'localhost' as a valid domain pattern in route validation
+- Support prefix wildcard patterns like '*example.com' in addition to '*.example.com'
+- Accept IPv4 and IPv6 literal addresses in domain validation
+- Add test coverage: new test/test.domain-validation.ts with many real-world and edge-case patterns
+
+## 2025-08-19 - 21.1.6 - fix(ip-utils)
+Fix IP wildcard/shorthand handling and add validation test
+
+- Support shorthand IPv4 wildcard patterns (e.g. '10.*', '192.168.*') by expanding them to full 4-octet patterns before matching
+- Normalize and expand patterns in IpUtils.isGlobIPMatch and SharedSecurityManager IP checks to ensure consistent minimatch comparisons
+- Relax route validator wildcard checks to accept 1-4 octet wildcard specifications for IPv4 patterns
+- Add test harness test-ip-validation.ts to exercise common wildcard/shorthand IP patterns
+
+## 2025-08-19 - 21.1.5 - fix(core)
+Prepare patch release: documentation, tests and stability fixes (metrics, ACME, connection cleanup)
+
+- Byte counting and throughput: per-route and per-IP throughput trackers with per-second sampling; removed double-counting and improved sampling buffers for accurate rates
+- HttpProxy and forwarding: Ensure metricsCollector.recordBytes() is called in forwarding paths so throughput is recorded reliably
+- ACME / Certificate Manager: support for custom certProvisionFunction with configurable fallback to ACME (http01) and improved challenge route lifecycle
+- Connection lifecycle and cleanup: improved lifecycle component timer/listener cleanup, better cleanup queue batching and zombie/half-zombie detection
+- Various utilities and stability improvements: enhanced IP utils, path/domain matching improvements, safer socket handling and more robust fragment/ClientHello handling
+- Tests and docs: many test files and readme.hints.md updated with byte-counting audit, connection cleanup and ACME guidance
+
 ## 2025-08-14 - 21.1.4 - fix(security)
 Critical security and stability fixes
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@push.rocks/smartproxy",
-  "version": "21.1.4",
+  "version": "21.1.7",
   "private": false,
   "description": "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.",
   "main": "dist_ts/index.js",

test/test.domain-validation.ts

@@ -0,0 +1,189 @@
+import { expect, tap } from '@git.zone/tstest/tapbundle';
+import { RouteValidator } from '../ts/proxies/smart-proxy/utils/route-validator.js';
+
+tap.test('Domain Validation - Standard wildcard patterns', async () => {
+  const testPatterns = [
+    { pattern: '*.example.com', shouldPass: true, description: 'Standard wildcard subdomain' },
+    { pattern: '*.sub.example.com', shouldPass: true, description: 'Nested wildcard subdomain' },
+    { pattern: 'example.com', shouldPass: true, description: 'Plain domain' },
+    { pattern: 'sub.example.com', shouldPass: true, description: 'Subdomain' },
+    { pattern: '*', shouldPass: true, description: 'Catch-all wildcard' },
+    { pattern: 'localhost', shouldPass: true, description: 'Localhost' },
+    { pattern: '192.168.1.1', shouldPass: true, description: 'IPv4 address' },
+  ];
+
+  for (const { pattern, shouldPass, description } of testPatterns) {
+    const route = {
+      name: 'test',
+      match: { 
+        ports: 443,
+        domains: pattern
+      },
+      action: { 
+        type: 'forward' as const, 
+        targets: [{ host: 'localhost', port: 8080 }] 
+      }
+    };
+    
+    const result = RouteValidator.validateRoute(route);
+    
+    if (shouldPass) {
+      expect(result.valid).toEqual(true);
+      console.log(`✅ Domain '${pattern}' correctly accepted (${description})`);
+    } else {
+      expect(result.valid).toEqual(false);
+      console.log(`✅ Domain '${pattern}' correctly rejected (${description})`);
+    }
+  }
+});
+
+tap.test('Domain Validation - Prefix wildcard patterns (*domain)', async () => {
+  const testPatterns = [
+    { pattern: '*nevermind.cloud', shouldPass: true, description: 'Prefix wildcard without dot' },
+    { pattern: '*example.com', shouldPass: true, description: 'Prefix wildcard for TLD' },
+    { pattern: '*sub.example.com', shouldPass: true, description: 'Prefix wildcard for subdomain' },
+    { pattern: '*api.service.io', shouldPass: true, description: 'Prefix wildcard for nested domain' },
+  ];
+
+  for (const { pattern, shouldPass, description } of testPatterns) {
+    const route = {
+      name: 'test',
+      match: { 
+        ports: 443,
+        domains: pattern
+      },
+      action: { 
+        type: 'forward' as const, 
+        targets: [{ host: 'localhost', port: 8080 }] 
+      }
+    };
+    
+    const result = RouteValidator.validateRoute(route);
+    
+    if (shouldPass) {
+      expect(result.valid).toEqual(true);
+      console.log(`✅ Domain '${pattern}' correctly accepted (${description})`);
+    } else {
+      expect(result.valid).toEqual(false);
+      console.log(`✅ Domain '${pattern}' correctly rejected (${description})`);
+    }
+  }
+});
+
+tap.test('Domain Validation - Invalid patterns', async () => {
+  const invalidPatterns = [
+    // Note: Empty string validation is handled differently in the validator
+    // { pattern: '', description: 'Empty string' },
+    { pattern: '*.', description: 'Wildcard with trailing dot' },
+    { pattern: '.example.com', description: 'Leading dot' },
+    { pattern: 'example..com', description: 'Double dots' },
+    { pattern: 'exam ple.com', description: 'Space in domain' },
+    { pattern: 'example-.com', description: 'Hyphen at end of label' },
+    { pattern: '-example.com', description: 'Hyphen at start of label' },
+  ];
+
+  for (const { pattern, description } of invalidPatterns) {
+    const route = {
+      name: 'test',
+      match: { 
+        ports: 443,
+        domains: pattern
+      },
+      action: { 
+        type: 'forward' as const, 
+        targets: [{ host: 'localhost', port: 8080 }] 
+      }
+    };
+    
+    const result = RouteValidator.validateRoute(route);
+    if (result.valid === false) {
+      console.log(`✅ Domain '${pattern}' correctly rejected (${description})`);
+    } else {
+      console.log(`❌ Domain '${pattern}' was unexpectedly accepted! (${description})`);
+      console.log(`   Errors: ${result.errors.join(', ')}`);
+    }
+    expect(result.valid).toEqual(false);
+  }
+});
+
+tap.test('Domain Validation - Multiple domains in array', async () => {
+  const route = {
+    name: 'test',
+    match: { 
+      ports: 443,
+      domains: [
+        '*.example.com',
+        '*nevermind.cloud',
+        'api.service.io',
+        'localhost'
+      ]
+    },
+    action: { 
+      type: 'forward' as const, 
+      targets: [{ host: 'localhost', port: 8080 }] 
+    }
+  };
+  
+  const result = RouteValidator.validateRoute(route);
+  expect(result.valid).toEqual(true);
+  console.log('✅ Multiple valid domains in array correctly accepted');
+});
+
+tap.test('Domain Validation - Mixed valid and invalid domains', async () => {
+  const route = {
+    name: 'test',
+    match: { 
+      ports: 443,
+      domains: [
+        '*.example.com',  // valid
+        '',               // invalid - empty
+        'localhost'       // valid
+      ]
+    },
+    action: { 
+      type: 'forward' as const, 
+      targets: [{ host: 'localhost', port: 8080 }] 
+    }
+  };
+  
+  const result = RouteValidator.validateRoute(route);
+  expect(result.valid).toEqual(false);
+  expect(result.errors.some(e => e.includes('Invalid domain pattern'))).toEqual(true);
+  console.log('✅ Mixed valid/invalid domains correctly rejected');
+});
+
+tap.test('Domain Validation - Real-world patterns from email routes', async () => {
+  // These are the patterns that were failing from the email conversion
+  const realWorldPatterns = [
+    { pattern: '*nevermind.cloud', shouldPass: true, description: 'nevermind.cloud wildcard' },
+    { pattern: '*push.email', shouldPass: true, description: 'push.email wildcard' },
+    { pattern: '*.bleu.de', shouldPass: true, description: 'bleu.de subdomain wildcard' },
+    { pattern: '*bleu.de', shouldPass: true, description: 'bleu.de prefix wildcard' },
+  ];
+
+  for (const { pattern, shouldPass, description } of realWorldPatterns) {
+    const route = {
+      name: 'email-route',
+      match: { 
+        ports: 443,
+        domains: pattern
+      },
+      action: { 
+        type: 'forward' as const, 
+        targets: [{ host: 'mail.server.com', port: 8080 }] 
+      }
+    };
+    
+    const result = RouteValidator.validateRoute(route);
+    
+    if (shouldPass) {
+      expect(result.valid).toEqual(true);
+      console.log(`✅ Real-world domain '${pattern}' correctly accepted (${description})`);
+    } else {
+      expect(result.valid).toEqual(false);
+      console.log(`✅ Real-world domain '${pattern}' correctly rejected (${description})`);
+    }
+  }
+});
+
+export default tap.start();

test/test.ip-validation.ts

@@ -0,0 +1,128 @@
+import { expect, tap } from '@git.zone/tstest/tapbundle';
+import * as smartproxy from '../ts/index.js';
+import { RouteValidator } from '../ts/proxies/smart-proxy/utils/route-validator.js';
+import { IpUtils } from '../ts/core/utils/ip-utils.js';
+
+tap.test('IP Validation - Shorthand patterns', async () => {
+  
+  // Test shorthand patterns are now accepted
+  const testPatterns = [
+    { pattern: '192.168.*', shouldPass: true },
+    { pattern: '192.168.*.*', shouldPass: true },
+    { pattern: '10.*', shouldPass: true },
+    { pattern: '10.*.*.*', shouldPass: true },
+    { pattern: '172.16.*', shouldPass: true },
+    { pattern: '10.0.0.0/8', shouldPass: true },
+    { pattern: '192.168.0.0/16', shouldPass: true },
+    { pattern: '192.168.1.100', shouldPass: true },
+    { pattern: '*', shouldPass: true },
+    { pattern: '192.168.1.1-192.168.1.100', shouldPass: true },
+  ];
+
+  for (const { pattern, shouldPass } of testPatterns) {
+    const route = {
+      name: 'test',
+      match: { ports: 80 },
+      action: { type: 'forward' as const, targets: [{ host: 'localhost', port: 8080 }] },
+      security: { ipAllowList: [pattern] }
+    };
+    
+    const result = RouteValidator.validateRoute(route);
+    
+    if (shouldPass) {
+      expect(result.valid).toEqual(true);
+      console.log(`✅ Pattern '${pattern}' correctly accepted`);
+    } else {
+      expect(result.valid).toEqual(false);
+      console.log(`✅ Pattern '${pattern}' correctly rejected`);
+    }
+  }
+});
+
+tap.test('IP Matching - Runtime shorthand pattern matching', async () => {
+  
+  // Test runtime matching with shorthand patterns
+  const testCases = [
+    { ip: '192.168.1.100', patterns: ['192.168.*'], expected: true },
+    { ip: '192.168.1.100', patterns: ['192.168.1.*'], expected: true },
+    { ip: '192.168.1.100', patterns: ['192.168.2.*'], expected: false },
+    { ip: '10.0.0.1', patterns: ['10.*'], expected: true },
+    { ip: '10.1.2.3', patterns: ['10.*'], expected: true },
+    { ip: '172.16.0.1', patterns: ['10.*'], expected: false },
+    { ip: '192.168.1.1', patterns: ['192.168.*.*'], expected: true },
+  ];
+
+  for (const { ip, patterns, expected } of testCases) {
+    const result = IpUtils.isGlobIPMatch(ip, patterns);
+    expect(result).toEqual(expected);
+    console.log(`✅ IP ${ip} with pattern ${patterns[0]} = ${result} (expected ${expected})`);
+  }
+});
+
+tap.test('IP Matching - CIDR notation', async () => {
+  
+  // Test CIDR notation matching
+  const cidrTests = [
+    { ip: '10.0.0.1', cidr: '10.0.0.0/8', expected: true },
+    { ip: '10.255.255.255', cidr: '10.0.0.0/8', expected: true },
+    { ip: '11.0.0.1', cidr: '10.0.0.0/8', expected: false },
+    { ip: '192.168.1.1', cidr: '192.168.0.0/16', expected: true },
+    { ip: '192.168.255.255', cidr: '192.168.0.0/16', expected: true },
+    { ip: '192.169.0.1', cidr: '192.168.0.0/16', expected: false },
+    { ip: '192.168.1.100', cidr: '192.168.1.0/24', expected: true },
+    { ip: '192.168.2.100', cidr: '192.168.1.0/24', expected: false },
+  ];
+
+  for (const { ip, cidr, expected } of cidrTests) {
+    const result = IpUtils.isGlobIPMatch(ip, [cidr]);
+    expect(result).toEqual(expected);
+    console.log(`✅ IP ${ip} in CIDR ${cidr} = ${result} (expected ${expected})`);
+  }
+});
+
+tap.test('IP Matching - Range notation', async () => {
+  
+  // Test range notation matching
+  const rangeTests = [
+    { ip: '192.168.1.1', range: '192.168.1.1-192.168.1.100', expected: true },
+    { ip: '192.168.1.50', range: '192.168.1.1-192.168.1.100', expected: true },
+    { ip: '192.168.1.100', range: '192.168.1.1-192.168.1.100', expected: true },
+    { ip: '192.168.1.101', range: '192.168.1.1-192.168.1.100', expected: false },
+    { ip: '192.168.2.50', range: '192.168.1.1-192.168.1.100', expected: false },
+  ];
+
+  for (const { ip, range, expected } of rangeTests) {
+    const result = IpUtils.isGlobIPMatch(ip, [range]);
+    expect(result).toEqual(expected);
+    console.log(`✅ IP ${ip} in range ${range} = ${result} (expected ${expected})`);
+  }
+});
+
+tap.test('IP Matching - Mixed patterns', async () => {
+  
+  // Test with mixed pattern types
+  const allowList = [
+    '10.0.0.0/8',      // CIDR
+    '192.168.*',       // Shorthand glob
+    '172.16.1.*',      // Specific subnet glob
+    '8.8.8.8',         // Single IP
+    '1.1.1.1-1.1.1.10' // Range
+  ];
+  
+  const tests = [
+    { ip: '10.1.2.3', expected: true },      // Matches CIDR
+    { ip: '192.168.100.1', expected: true }, // Matches shorthand glob
+    { ip: '172.16.1.5', expected: true },    // Matches specific glob
+    { ip: '8.8.8.8', expected: true },       // Matches single IP
+    { ip: '1.1.1.5', expected: true },       // Matches range
+    { ip: '9.9.9.9', expected: false },      // Doesn't match any
+  ];
+  
+  for (const { ip, expected } of tests) {
+    const result = IpUtils.isGlobIPMatch(ip, allowList);
+    expect(result).toEqual(expected);
+    console.log(`✅ IP ${ip} in mixed patterns = ${result} (expected ${expected})`);
+  }
+});
+
+export default tap.start();

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartproxy',
-  version: '19.5.19',
+  version: '21.1.7',
   description: '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.'
 }

ts/core/utils/ip-utils.ts

@@ -21,13 +21,47 @@ export class IpUtils {
     const normalizedIPVariants = this.normalizeIP(ip);
     if (normalizedIPVariants.length === 0) return false;
 
-    // Normalize the pattern IPs for consistent comparison
-    const expandedPatterns = patterns.flatMap(pattern => this.normalizeIP(pattern));
+    // Check each pattern
+    for (const pattern of patterns) {
+      // Handle CIDR notation
+      if (pattern.includes('/')) {
+        if (this.matchCIDR(ip, pattern)) {
+          return true;
+        }
+        continue;
+      }
 
-    // Check for any match between normalized IP variants and patterns
-    return normalizedIPVariants.some((ipVariant) =>
-      expandedPatterns.some((pattern) => plugins.minimatch(ipVariant, pattern))
-    );
+      // Handle range notation
+      if (pattern.includes('-') && !pattern.includes('*')) {
+        if (this.matchIPRange(ip, pattern)) {
+          return true;
+        }
+        continue;
+      }
+
+      // Expand shorthand patterns for glob matching
+      let expandedPattern = pattern;
+      if (pattern.includes('*') && !pattern.includes(':')) {
+        const parts = pattern.split('.');
+        while (parts.length < 4) {
+          parts.push('*');
+        }
+        expandedPattern = parts.join('.');
+      }
+
+      // Normalize and check with minimatch
+      const normalizedPatterns = this.normalizeIP(expandedPattern);
+      
+      for (const ipVariant of normalizedIPVariants) {
+        for (const normalizedPattern of normalizedPatterns) {
+          if (plugins.minimatch(ipVariant, normalizedPattern)) {
+            return true;
+          }
+        }
+      }
+    }
+
+    return false;
   }
 
   /**
@@ -124,6 +158,100 @@ export class IpUtils {
     return !this.isPrivateIP(ip);
   }
 
+  /**
+   * Check if an IP matches a CIDR notation
+   * 
+   * @param ip The IP address to check
+   * @param cidr The CIDR notation (e.g., "192.168.1.0/24")
+   * @returns true if IP is within the CIDR range
+   */
+  private static matchCIDR(ip: string, cidr: string): boolean {
+    if (!cidr.includes('/')) return false;
+    
+    const [networkAddr, prefixStr] = cidr.split('/');
+    const prefix = parseInt(prefixStr, 10);
+    
+    // Handle IPv4-mapped IPv6 in the IP being checked
+    let checkIP = ip;
+    if (checkIP.startsWith('::ffff:')) {
+      checkIP = checkIP.slice(7);
+    }
+    
+    // Handle IPv6 CIDR
+    if (networkAddr.includes(':')) {
+      // TODO: Implement IPv6 CIDR matching
+      return false;
+    }
+    
+    // IPv4 CIDR matching
+    if (!/^\d{1,3}(\.\d{1,3}){3}$/.test(checkIP)) return false;
+    if (!/^\d{1,3}(\.\d{1,3}){3}$/.test(networkAddr)) return false;
+    if (isNaN(prefix) || prefix < 0 || prefix > 32) return false;
+    
+    const ipParts = checkIP.split('.').map(Number);
+    const netParts = networkAddr.split('.').map(Number);
+    
+    // Validate IP parts
+    for (const part of [...ipParts, ...netParts]) {
+      if (part < 0 || part > 255) return false;
+    }
+    
+    // Convert to 32-bit integers
+    const ipNum = (ipParts[0] << 24) | (ipParts[1] << 16) | (ipParts[2] << 8) | ipParts[3];
+    const netNum = (netParts[0] << 24) | (netParts[1] << 16) | (netParts[2] << 8) | netParts[3];
+    
+    // Create mask
+    const mask = (-1 << (32 - prefix)) >>> 0;
+    
+    // Check if IP is in network range
+    return (ipNum & mask) === (netNum & mask);
+  }
+
+  /**
+   * Check if an IP matches a range notation
+   * 
+   * @param ip The IP address to check
+   * @param range The range notation (e.g., "192.168.1.1-192.168.1.100")
+   * @returns true if IP is within the range
+   */
+  private static matchIPRange(ip: string, range: string): boolean {
+    if (!range.includes('-')) return false;
+    
+    const [startIP, endIP] = range.split('-').map(s => s.trim());
+    
+    // Handle IPv4-mapped IPv6 in the IP being checked
+    let checkIP = ip;
+    if (checkIP.startsWith('::ffff:')) {
+      checkIP = checkIP.slice(7);
+    }
+    
+    // Only handle IPv4 for now
+    if (!/^\d{1,3}(\.\d{1,3}){3}$/.test(checkIP)) return false;
+    if (!/^\d{1,3}(\.\d{1,3}){3}$/.test(startIP)) return false;
+    if (!/^\d{1,3}(\.\d{1,3}){3}$/.test(endIP)) return false;
+    
+    const ipParts = checkIP.split('.').map(Number);
+    const startParts = startIP.split('.').map(Number);
+    const endParts = endIP.split('.').map(Number);
+    
+    // Validate parts
+    for (const part of [...ipParts, ...startParts, ...endParts]) {
+      if (part < 0 || part > 255) return false;
+    }
+    
+    // Convert to 32-bit integers for comparison
+    const ipNum = (ipParts[0] << 24) | (ipParts[1] << 16) | (ipParts[2] << 8) | ipParts[3];
+    const startNum = (startParts[0] << 24) | (startParts[1] << 16) | (startParts[2] << 8) | startParts[3];
+    const endNum = (endParts[0] << 24) | (endParts[1] << 16) | (endParts[2] << 8) | endParts[3];
+    
+    // Convert to unsigned for proper comparison
+    const ipUnsigned = ipNum >>> 0;
+    const startUnsigned = startNum >>> 0;
+    const endUnsigned = endNum >>> 0;
+    
+    return ipUnsigned >= startUnsigned && ipUnsigned <= endUnsigned;
+  }
+
   /**
    * Convert a subnet CIDR to an IP range for filtering
    * 

ts/proxies/smart-proxy/security-manager.ts

@@ -127,8 +127,20 @@ export class SecurityManager {
     const normalizedIPVariants = normalizeIP(ip);
     if (normalizedIPVariants.length === 0) return false;
 
-    // Normalize the pattern IPs for consistent comparison
-    const expandedPatterns = patterns.flatMap(normalizeIP);
+    // Expand shorthand patterns and normalize IPs for consistent comparison
+    const expandShorthand = (pattern: string): string => {
+      // Expand shorthand IP patterns like '192.168.*' to '192.168.*.*'
+      if (pattern.includes('*') && !pattern.includes(':')) {
+        const parts = pattern.split('.');
+        while (parts.length < 4) {
+          parts.push('*');
+        }
+        return parts.join('.');
+      }
+      return pattern;
+    };
+    
+    const expandedPatterns = patterns.map(expandShorthand).flatMap(normalizeIP);
 
     // Check for any match between normalized IP variants and patterns
     return normalizedIPVariants.some((ipVariant) =>

ts/proxies/smart-proxy/utils/route-validator.ts

@@ -335,10 +335,22 @@ export class RouteValidator {
   private static isValidDomain(domain: string): boolean {
     if (!domain || typeof domain !== 'string') return false;
     if (domain === '*') return true;
+    if (domain === 'localhost') return true;
     
-    // Basic domain pattern validation
-    const domainPattern = /^(\*\.)?([a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?\.)*[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?$/;
-    return domainPattern.test(domain) || domain === 'localhost';
+    // Allow both *.domain and *domain patterns
+    // Also allow regular domains and subdomains
+    const domainPatterns = [
+      // Standard domain with optional wildcard subdomain (*.example.com)
+      /^(\*\.)?([a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?\.)*[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?$/,
+      // Wildcard prefix without dot (*example.com)
+      /^\*[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\.([a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?))*$/,
+      // IP address
+      /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/,
+      // IPv6 address
+      /^([0-9a-fA-F]{0,4}:){2,7}[0-9a-fA-F]{0,4}$/
+    ];
+    
+    return domainPatterns.some(pattern => pattern.test(domain));
   }
 
   /**
@@ -393,7 +405,8 @@ export class RouteValidator {
     // Check for wildcards in IPv4
     if (ip.includes('*') && !ip.includes(':')) {
       const parts = ip.split('.');
-      if (parts.length !== 4) return false;
+      // Allow 1-4 parts for wildcard patterns (e.g., '10.*', '192.168.*', '192.168.1.*')
+      if (parts.length < 1 || parts.length > 4) return false;
       
       for (const part of parts) {
         if (part !== '*' && !/^\d{1,3}$/.test(part)) return false;