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fix: 判断内网函数支持ipv6检测

This commit is contained in:
Zero 2025-03-11 21:04:44 +08:00
parent d166553063
commit 03d9be3b11
1 changed files with 19 additions and 24 deletions
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43
maku-framework/src/main/java/net/maku/framework/common/utils/IpUtils.java
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@ -92,34 +92,29 @@ public class IpUtils {
* @param addr byte地址
*/
private static boolean internalIp(byte[] addr) {
if (addr == null || addr.length < 2) {
return true;
if (addr == null) return true;
// IPv6地址处理
if (addr.length == 16) {
return (addr[0] & 0xFE) == 0xFC; //RFC4193标准：fc00::/7
}
// IPv4地址长度校验
if (addr.length != 4) return true;
final byte b0 = addr[0];
final byte b1 = addr[1];
// 10.x.x.x/8
final byte SECTION_1 = 0x0A;
// 172.16.x.x/12
final byte SECTION_2 = (byte) 0xAC;
final byte SECTION_3 = (byte) 0x10;
final byte SECTION_4 = (byte) 0x1F;
// 192.168.x.x/16
final byte SECTION_5 = (byte) 0xC0;
final byte SECTION_6 = (byte) 0xA8;
switch (b0) {
case SECTION_1:
return true;
case SECTION_2:
if (b1 >= SECTION_3 && b1 <= SECTION_4) {
return true;
}
case SECTION_5:
if (b1 == SECTION_6) {
return true;
}
default:
return false;
// 10.0.0.0/8
if (b0 == 0x0A) return true;
// 172.16.0.0/12
if (b0 == (byte)0xAC) {
return (b1 >= 0x10 && b1 <= 0x1F);
}
// 192.168.0.0/16
return (b0 == (byte)0xC0) && (b1 == (byte)0xA8);
}
/**