liuarui / easyutils / 10768224429

// 正则表达式用于验证IPv4地址

const ipv4Regex = /^((25[0-5]|2[0-4]\d|1?\d\d?)\.){3}(25[0-5]|2[0-4]\d|1?\d\d?)$/;

export function validateIPV4(ip: string) {

    if (ipv4Regex.test(ip)) {

        return true;

    }

    return false;

}

export function validateIPV6(ip: string): boolean {

    // IPv6 should not have more than one '::'

    if (ip.split('::').length > 2) return false;

    // Split the address into segments

    const segments = ip.split(':');

    // Handle '::' cases

    if (ip.includes('::')) {

        // Handle leading '::' or trailing '::'

        const doubleColonIndex = segments.indexOf('');

        if (doubleColonIndex === 0 || doubleColonIndex === segments.length - 1) {

            segments.splice(doubleColonIndex, 1); // Remove empty part caused by leading/trailing '::'

        }

        const partsBeforeDoubleColon = segments.slice(0, doubleColonIndex);

        const partsAfterDoubleColon = segments.slice(doubleColonIndex);

        // At most there can be 7 parts before and after '::'

    } else if (segments.length !== 8) {

        // If there's no '::' and the segments are not exactly 8, it's invalid

        return false;

    }

    const hexRegex = /^[0-9a-fA-F]{1,4}$/;

    for (const segment of segments) {

        if (segment === '') continue; // Skip empty segments caused by '::'

        if (!hexRegex.test(segment)) {

            return false;

        }

    }

    return true;

}

export function validateIP(ip: string) {

    if (validateIPV4(ip) || validateIPV6(ip)) {

        return true;

    }

    return false;

}