Incorrect results for 'is_valid_ip_address()' for compressed IPv6 adresses using '::'

Tested versions

4.4 dev

System information

Godot v4.4.dev (0c45ace15) - Windows 10.0.18363 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 3060 Ti (NVIDIA; 32.0.15.6614) - Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz (8 threads)

Issue description

The is_valid_ip_address() method has inconsistent behavior when validating IPv6 addresses with multiple occurrences of ::. According to the IPv6 standard, :: can only appear once in an address to represent consecutive zero segments, but currently, for example, the method incorrectly validates addresses like 2001:db8:::1 and 2001::1::1 as valid. These padding styles should not be possible.

Down below are some test cases that shows that the methods returns true when we expect false

Steps to reproduce

extends Node

func _ready() -> void:
        print("\nTesting is_valid_ip_address() Method:\n")

        print("Valid IPv4 Addresses:")
        print("Input: ", "192.168.1.1",         "\t -> Result:", "192.168.1.1".is_valid_ip_address())         # Expected: true
        print("Input: ", "255.255.255.255",     "\t -> Result:", "255.255.255.255".is_valid_ip_address())     # Expected: true (broadcast address)

        print("\nInvalid IPv4 Addresses:")
        print("Input: ", "256.256.256.256",     "\t -> Result:", "256.256.256.256".is_valid_ip_address())     # Expected: false (out of range)
        print("Input: ", "192.168.1",           "\t -> Result:", "192.168.1".is_valid_ip_address())           # Expected: false (missing octet)
        print("Input: ", "192.168.-1.1",        "\t -> Result:", "192.168.-1.1".is_valid_ip_address())        # Expected: false (negative octet)

        print("\nValid IPv6 Addresses:")
        print("Input: ", "::1",                 "\t -> Result:", "::1".is_valid_ip_address())                 # Expected: true (loopback address)
        print("Input: ", "2001:db8::",          "\t -> Result:", "2001:db8::".is_valid_ip_address())          # Expected: true (trailing `::`)

        print("\nInvalid IPv6 Addresses:")
        print("Input: ", "2001:db8:::1",        "\t -> Result:", "2001:db8:::1".is_valid_ip_address())        # Expected: false (multiple `::`)
        print("Input: ", "2001::1::1",          "\t -> Result:", "2001::1::1".is_valid_ip_address())          # Expected: false (multiple `::`)
        print("Input: ", "::ffff:999.999.999.999","\t -> Result:", "::ffff:999.999.999.999".is_valid_ip_address()) # Expected: false (invalid IPv4 in IPv6)

        print("\nEdge Cases:")
        print("Input: ", "",                    "\t -> Result:", "".is_valid_ip_address())                    # Expected: false (empty string)
        print("Input: ", ":1",                  "\t -> Result:", ":1".is_valid_ip_address())                  # Expected: false (incomplete address)
        print("Input: ", "12345::",             "\t -> Result:", "12345::".is_valid_ip_address())             # Expected: false (invalid segment length)

Minimal reproduction project (MRP)

N/A

godotengine / godot