Latin1 was the early default character set for encoding documents delivered via HTTP for MIME types beginning with /text . Today, only around only 1.1% of websites on the internet use the encoding, along with some older appplications. However, it is still the most popular single-byte character encoding scheme in use today. A funny thing about Latin1 encoding is that it maps every byte from 0 to 255 to a valid character. This means that literally any sequence of bytes can be interpreted as a valid string. The main drawback is that it only supports characters from Western European languages. The same is not true for UTF8. Unlike Latin1, UTF8 supports a vastly broader range of characters from different languages and scripts. But as a consequence, not every byte sequence is valid. This fact is due to UTF8's added complexity, using multi-byte sequences for characters beyond the general ASCII range. This is also why you can't just throw any sequence of bytes at it and e...
Project Discovery’s mapcidr had a bug when converting IP addresses. The “-ip-format” flag did not properly work for one of the cases. For example, echo '127.0.0.1' | mapcidr -ip-format 5 would incorrectly return the integer representation or decimal value 281472812449793 , when it should have returned the decimal value 2130706433 . The problem could be seen in the Go function here which uses functionality imported from the math library . func IPToInteger(ip net.IP) (*big.Int, int, error) { val := &big.Int{} val.SetBytes([]byte(ip)) if len(ip) == net.IPv4len { return val, 32, nil //nolint } else if len(ip) == net.IPv6len { return val, 128, nil //nolint } else { return nil, 0, fmt.Errorf("unsupported address length %d", len(ip)) The function was easily fixed by removing the early "setBytes" value and rewriting it to correctly set the bytes conditionally for each if-statement, depending on the IP type. func IPToInteger(ip net.IP) (*big....