@himorishige/noren-plugin-network/dist/maskers.js

Network PII detection plugin for Noren - IPv4, IPv6, and MAC address detection

/**
 * Network PII maskers for IPv4, IPv6, and MAC addresses
 */
export const maskers = {
    /**
     * IPv4 address masker
     * Masks each octet while preserving structure
     */
    ipv4: (hit) => {
        const value = hit.value;
        const octets = value.split('.');
        return octets.map(() => '•••').join('.');
    },
    /**
     * IPv6 address masker
     * Masks groups while preserving :: compression notation
     */
    ipv6: (hit) => {
        const value = hit.value;
        // Handle special cases
        if (value === '::')
            return '::';
        if (value === '::1')
            return '::1';
        // Simple masking - replace hex digits with •
        return value.replace(/[0-9a-fA-F]/g, '•');
    },
    /**
     * MAC address masker
     * Masks address while preserving separator style
     */
    mac: (hit) => {
        const value = hit.value;
        const separator = value.includes(':') ? ':' : '-';
        return `••${separator}••${separator}••${separator}••${separator}••${separator}••`;
    },
};