Script to check for the presence of IP in SPAM databases. Swift

import Foundation

func checkSpam(ipAddress: String) {
    // Validate the IP address
    if ipAddress.range(of: #"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$"#, options: .regularExpression) == nil {
        print("Invalid IP address format")
        return
    }

    // List of spam databases to check
    let spamDatabases = [
        "b.barracudacentral.org",
        "bl.spamcop.net",
        "dnsbl.sorbs.net",
        "zen.spamhaus.org"
    ]

    // Check each database for the IP address
    for db in spamDatabases {
        let query = ipAddress + "." + db
        guard let addr = try? DNSResolver.resolve(query: query) else {
            print("Error checking \(ipAddress) in \(db)")
            continue
        }

        // Check if the IP address is listed
        if addr == "127.0.0.2" || addr == "::1" {
            print("\(ipAddress) found in \(db)")
        } else {
            print("\(ipAddress) not found in \(db)")
        }
    }
}

struct DNSResolver {
    static func resolve(query: String) throws -> String {
        // Perform DNS lookup here
        // Simulating DNS lookup result for demonstration
        // In real-world implementation, you would use a DNS resolver library or system call
        return "127.0.0.2"
    }
}

// Example usage
let ipToCheck = "123.456.789.10" // Replace this with the IP address you want to check
checkSpam(ipAddress: ipToCheck)