@rwesa/payu-ble/platform/dist/platform_network_helper.cjs.map

A flexible, smart Bluetooth Low Energy challenge system for secure device connections

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// 30 seconds\n  private options: NetworkScanOptions;\n\n  constructor(options: NetworkScanOptions = {}) {\n    this.options = {\n      timeout: 5000,\n      retries: 2,\n      scanSubnet: false,\n      subnet: '192.168.1.0/24',\n      ...options\n    };\n  }\n\n  private normalizeMAC(mac: string): string {\n    // Normalize MAC address format (remove separators, lowercase)\n    return mac.replace(/[:-]/g, '').toLowerCase();\n  }\n\n  private async getARPTable(): Promise<Set<string>> {\n    try {\n      let command: string;\n      \n      // Platform-specific ARP commands\n      if (process.platform === 'win32') {\n        command = 'arp -a';\n      } else if (process.platform === 'darwin') {\n        command = 'arp -a';\n      } else {\n        // Linux and others\n        command = 'arp -a';\n      }\n\n      const { stdout } = await execAsync(command, { timeout: this.options.timeout });\n      const macs = new Set<string>();\n\n      // Parse ARP table output\n      const lines = stdout.split('\\n');\n      for (const line of lines) {\n        // Match MAC addresses in various formats\n        const macMatch = line.match(/([0-9a-fA-F]{2}[:-]){5}[0-9a-fA-F]{2}/);\n        if (macMatch) {\n          macs.add(this.normalizeMAC(macMatch[0]));\n        }\n      }\n\n      return macs;\n    } catch (error) {\n      console.error('Error getting ARP table:', error);\n      return new Set();\n    }\n  }\n\n  private async pingSubnet(): Promise<void> {\n    if (!this.options.scanSubnet || !this.options.subnet) {\n      return;\n    }\n\n    try {\n      // Extract network portion (simplified for common cases)\n      const baseIP = this.options.subnet.split('/')[0].split('.').slice(0, 3).join('.');\n      \n      // Ping common IP addresses to populate ARP table\n      const pingPromises: Promise<void>[] = [];\n      \n      for (let i = 1; i <= 254; i++) {\n        const ip = `${baseIP}.${i}`;\n        const pingPromise = this.pingHost(ip).catch(() => {\n          // Ignore ping failures - we just want to populate ARP table\n        });\n        pingPromises.push(pingPromise);\n      }\n\n      // Wait for a reasonable number of pings to complete\n      await Promise.allSettled(pingPromises.slice(0, 50));\n      \n    } catch (error) {\n      console.error('Error pinging subnet:', error);\n    }\n  }\n\n  private async pingHost(ip: string): Promise<void> {\n    const pingCommand = process.platform === 'win32' \n      ? `ping -n 1 -w 1000 ${ip}`\n      : `ping -c 1 -W 1 ${ip}`;\n    \n    await execAsync(pingCommand, { timeout: 2000 });\n  }\n\n  public async scanForMAC(targetMAC: string): Promise<boolean> {\n    const normalizedTarget = this.normalizeMAC(targetMAC);\n    \n    // Check cache first\n    const now = Date.now();\n    if (now - this.lastScanTime < this.cacheTimeout && this.cachedMACs.has(normalizedTarget)) {\n      return true;\n    }\n\n    try {\n      // Optionally ping subnet to populate ARP table\n      if (this.options.scanSubnet) {\n        await this.pingSubnet();\n      }\n\n      // Get current ARP table\n      const discoveredMACs = await this.getARPTable();\n      \n      // Update cache\n      this.cachedMACs = discoveredMACs;\n      this.lastScanTime = now;\n\n      return discoveredMACs.has(normalizedTarget);\n      \n    } catch (error) {\n      console.error('Error scanning for MAC:', error);\n      return false;\n    }\n  }\n\n  public async getAllDiscoveredMACs(): Promise<string[]> {\n    await this.getARPTable();\n    return Array.from(this.cachedMACs);\n  }\n\n  public clearCache(): void {\n    this.cachedMACs.clear();\n    this.lastScanTime = 0;\n  }\n}\n\n// Factory function for creating MAC-based availability triggers\nexport function createMACNetworkTrigger(\n  targetMAC: string, \n  options?: NetworkScanOptions\n): () => boolean {\n  const networkHelper = new NetworkMACHelper(options);\n  let isAvailable = false;\n  \n  // Periodically scan for the MAC address\n  const scanInterval = setInterval(async () => {\n    try {\n      isAvailable = await networkHelper.scanForMAC(targetMAC);\n    } catch (error) {\n      console.error('MAC scan error:', error);\n      isAvailable = false;\n    }\n  }, 10000); // Scan every 10 seconds\n\n  // Cleanup on process exit\n  const cleanup = () => {\n    clearInterval(scanInterval);\n  };\n  \n  process.on('SIGINT', cleanup);\n  process.on('SIGTERM', cleanup);\n\n  return () => isAvailable;\n}\n\n// Simpler interface matching the original helper\nexport function macOnNetwork(mac: string): () => boolean {\n  return createMACNetworkTrigger(mac, { scanSubnet: true });\n}\n\n// Additional utility functions\nexport async function discoverLocalDevices(options?: NetworkScanOptions): Promise<string[]> {\n  const helper = new NetworkMACHelper(options);\n  return helper.getAllDiscoveredMACs();\n}\n\nexport async function isDeviceOnNetwork(mac: string, options?: NetworkScanOptions): Promise<boolean> {\n  const helper = new NetworkMACHelper(options);\n  return helper.scanForMAC(mac);\n}"]}