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add method;
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emptypoint
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faa1e11494
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@ -29,64 +29,10 @@ import java.util.regex.Matcher;
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*
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* @author ZhuKun
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* @author emptypoint
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* @author aoshiguchen
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* @since 5.4.1
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*/
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public class Ipv4Util {
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/**
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* 本地IP：127.0.0.1
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*/
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public static final String LOCAL_IP = "127.0.0.1";
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/**
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* IP段的分割符
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*/
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public static final String IP_SPLIT_MARK = "-";
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/**
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* IP与掩码的分割符
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*/
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public static final String IP_MASK_SPLIT_MARK = StrUtil.SLASH;
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/**
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* 最大掩码位
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*/
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public static final int IP_MASK_MAX = 32;
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/**
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* 最小掩码位
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*/
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public static final int IP_MASK_MIN = 1;
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/**
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* A类私有地址的最小值
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*/
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public static final long A_INNER_IP_LONG_BEGIN = ipv4ToLong("10.0.0.0");
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/**
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* A类私有地址的最大值
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*/
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public static final long A_INNER_IP_LONG_END = ipv4ToLong("10.255.255.255");
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/**
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* B类私有地址的最小值
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*/
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public static final long B_INNER_IP_LONG_BEGIN = ipv4ToLong("172.16.0.0");
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/**
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* B类私有地址的最大值
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*/
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public static final long B_INNER_IP_LONG_END = ipv4ToLong("172.31.255.255");
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/**
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* C类私有地址的最小值
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*/
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public static final long C_INNER_IP_LONG_BEGIN = ipv4ToLong("192.168.0.0");
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/**
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* C类私有地址的最大值
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*/
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public static final long C_INNER_IP_LONG_END = ipv4ToLong("192.168.255.255");
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public class Ipv4Util implements Ipv4Pool {
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/**
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* 根据 ip地址 和 掩码地址 获得 CIDR格式字符串
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@ -135,7 +81,7 @@ public class Ipv4Util {
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return new ArrayList<>(0);
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}
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if (maskBit == IP_MASK_MAX) {
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if (maskBit == IPV4_MASK_BIT_MAX) {
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final List<String> list = new ArrayList<>(isAll ? 1 : 0);
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if (isAll) {
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list.add(ip);
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@ -311,25 +257,26 @@ public class Ipv4Util {
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/**
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* 获取 子网内的 地址总数
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*
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* @param maskBit 掩码位，取值范围：[2, {@link #IP_MASK_MAX}]
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* @param maskBit 掩码位，取值范围：({@link Ipv4Pool#IPV4_MASK_BIT_VALID_MIN}, {@link Ipv4Pool#IPV4_MASK_BIT_MAX}]
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* @param isAll true:全量地址，false:可用地址
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* @return 子网内地址总数
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*/
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public static int countByMaskBit(final int maskBit, final boolean isAll) {
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assertMaskBitValid(maskBit);
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Assert.isTrue(maskBit > IPV4_MASK_BIT_VALID_MIN && maskBit <= IPV4_MASK_BIT_MAX,
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"Not support mask bit: {}", maskBit);
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//如果掩码位等于32，则可用地址为0
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if (maskBit == 32 && false == isAll) {
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if (maskBit == IPV4_MASK_BIT_MAX && false == isAll) {
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return 0;
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}
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final int count = 1 << (32 - maskBit);
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final int count = 1 << (IPV4_MASK_BIT_MAX - maskBit);
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return isAll ? count : count - 2;
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}
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/**
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* 根据 掩码位 获取 掩码地址
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*
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* @param maskBit 掩码位，如：24，取值范围：[{@link #IP_MASK_MIN}, {@link #IP_MASK_MAX}]
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* @param maskBit 掩码位，如：24，取值范围：[{@link Ipv4Pool#IPV4_MASK_BIT_VALID_MIN}, {@link Ipv4Pool#IPV4_MASK_BIT_MAX}]
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* @return 掩码地址，点分十进制，如:255.255.255.0
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*/
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public static String getMaskByMaskBit(final int maskBit) {
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@ -400,11 +347,11 @@ public class Ipv4Util {
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/**
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* 判断掩码位是否合法
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*
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* @param maskBit 掩码位，有效范围：[{@link #IP_MASK_MIN}, {@link #IP_MASK_MAX}]
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* @param maskBit 掩码位，有效范围：[{@link Ipv4Pool#IPV4_MASK_BIT_VALID_MIN}, {@link Ipv4Pool#IPV4_MASK_BIT_MAX}]
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* @return true：掩码位合法；false：掩码位不合法
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*/
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public static boolean isMaskBitValid(final int maskBit) {
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return maskBit >= IP_MASK_MIN && maskBit <= IP_MASK_MAX;
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return maskBit >= IPV4_MASK_BIT_VALID_MIN && maskBit <= IPV4_MASK_BIT_MAX;
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}
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/**
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@ -422,13 +369,88 @@ public class Ipv4Util {
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* @since 5.7.18
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*/
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public static boolean isInnerIP(final String ipAddress) {
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final long ipNum = ipv4ToLong(ipAddress);
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return isBetween(ipNum, A_INNER_IP_LONG_BEGIN, A_INNER_IP_LONG_END)
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|| isBetween(ipNum, B_INNER_IP_LONG_BEGIN, B_INNER_IP_LONG_END)
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|| isBetween(ipNum, C_INNER_IP_LONG_BEGIN, C_INNER_IP_LONG_END)
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|| LOCAL_IP.equals(ipAddress);
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return isInnerIP(ipv4ToLong(ipAddress));
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}
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/**
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* 是否为内网地址
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*
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* @param ipNum IP地址数值形式
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* @return 是否为内网IP
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* @see #isInnerIP(String)
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* @since 6.0.0
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*/
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public static boolean isInnerIP(final long ipNum) {
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return isBetween(ipNum, IPV4_A_PRIVATE_NUM_MIN, IPV4_A_PRIVATE_NUM_MAX)
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|| isBetween(ipNum, IPV4_B_PRIVATE_NUM_MIN, IPV4_B_PRIVATE_NUM_MAX)
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|| isBetween(ipNum, IPV4_C_PRIVATE_NUM_MIN, IPV4_C_PRIVATE_NUM_MAX)
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|| LOCAL_IP_NUM == ipNum;
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}
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/**
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* 是否为公网地址
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* <p>
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* 公网IP：
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* <pre>
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* A类 1.0.0.0-9.255.255.255，11.0.0.0-126.255.255.255
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* B类 128.0.0.0-172.15.255.255，172.32.0.0-191.255.255.255
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* C类 192.0.0.0-192.167.255.255，192.169.0.0-223.255.255.255
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* </pre>
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*
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* @param ipAddress IP地址，点分十进制
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* @return 是否为公网IP
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* @since 6.0.0
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*/
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public static boolean isPublicIP(final String ipAddress) {
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return isPublicIP(ipv4ToLong(ipAddress));
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}
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/**
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* 是否为公网地址
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*
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* @param ipNum IP地址数值形式
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* @return 是否为公网IP
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* @see #isPublicIP(String)
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* @since 6.0.0
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*/
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public static boolean isPublicIP(final long ipNum) {
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return isBetween(ipNum, IPV4_A_PUBLIC_1_NUM_MIN, IPV4_A_PUBLIC_1_NUM_MAX)
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|| isBetween(ipNum, IPV4_A_PUBLIC_2_NUM_MIN, IPV4_A_PUBLIC_2_NUM_MAX)
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|| isBetween(ipNum, IPV4_B_PUBLIC_1_NUM_MIN, IPV4_B_PUBLIC_1_NUM_MAX)
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|| isBetween(ipNum, IPV4_B_PUBLIC_2_NUM_MIN, IPV4_B_PUBLIC_2_NUM_MAX)
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|| isBetween(ipNum, IPV4_C_PUBLIC_1_NUM_MIN, IPV4_C_PUBLIC_1_NUM_MAX)
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|| isBetween(ipNum, IPV4_C_PUBLIC_2_NUM_MIN, IPV4_C_PUBLIC_2_NUM_MAX);
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}
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/**
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* 获取ip(Long类型)指定部分的十进制值，即，{@literal X.X.X.X }形式中每个部分的值
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* <p>例如，ip为{@literal 0xC0A802FA}，第1部分的值为：
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* <ul>
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* <li>第1部分的值为：{@literal 0xC0}，十进制值为：192</li>
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* <li>第2部分的值为：{@literal 0xA8}，十进制值为：168</li>
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* <li>第3部分的值为：{@literal 0x02}，十进制值为：2</li>
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* <li>第4部分的值为：{@literal 0xFA}，十进制值为：250</li>
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* </ul>
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*
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* @param ip ip地址，Long类型
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* @param position 指定位置，取值范围：[1,4]
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* @return ip地址指定部分的十进制值
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* @since 6.0.0
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*/
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public static int getPartOfIpLong(final long ip, final int position) {
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switch (position) {
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case 1:
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return ((int) ip >> 24) & 0xFF;
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case 2:
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return ((int) ip >> 16) & 0xFF;
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case 3:
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return ((int) ip >> 8) & 0xFF;
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case 4:
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return ((int) ip) & 0xFF;
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default:
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throw new IllegalArgumentException("Illegal position of ip Long: " + position);
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}
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}
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//-------------------------------------------------------------------------------- Private method start
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/**
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@ -446,7 +468,7 @@ public class Ipv4Util {
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}
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// int的最高位无法直接使用，转为Long
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if (addr < 0) {
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return 0xffffffffL & addr;
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return IPV4_NUM_MAX & addr;
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}
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return addr;
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}
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@ -464,42 +486,12 @@ public class Ipv4Util {
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}
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/**
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* 校验 掩码位数，合法范围为：[1,32]，不合法则抛出异常
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* 校验 掩码位数，合法范围为：[{@link Ipv4Pool#IPV4_MASK_BIT_VALID_MIN}, {@link Ipv4Pool#IPV4_MASK_BIT_MAX}]，不合法则抛出异常
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*
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* @param maskBit 掩码位数
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*/
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private static void assertMaskBitValid(final int maskBit) {
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Assert.isTrue(isMaskBitValid(maskBit), "Invalid maskBit：{}", maskBit);
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}
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/**
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* 获取ip(Long类型)指定部分的十进制值，即，{@literal X.X.X.X }形式中每个部分的值
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* <p>例如，ip为{@literal 0xC0A802FA}，第1部分的值为：
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* <ul>
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* <li>第1部分的值为：@literal 0xC0}，十进制值为：192</li>
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* <li>第2部分的值为：@literal 0xA8}，十进制值为：168</li>
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* <li>第3部分的值为：@literal 0x02}，十进制值为：2</li>
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* <li>第4部分的值为：@literal 0xFA}，十进制值为：250</li>
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* </ul>
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* </p>
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*
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* @param ip ip地址，Long类型
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* @param position 指定位置，取值范围：[1,4]
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* @return ip地址指定部分的十进制值
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*/
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private static int getPartOfIpLong(final long ip, final int position) {
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switch (position) {
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case 1:
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return ((int) ip >> 24) & 0xFF;
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case 2:
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return ((int) ip >> 16) & 0xFF;
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case 3:
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return ((int) ip >> 8) & 0xFF;
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case 4:
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return ((int) ip) & 0xFF;
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default:
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throw new IllegalArgumentException("Illegal position of ip Long: " + position);
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}
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}
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//-------------------------------------------------------------------------------- Private method end
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}
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@ -148,10 +148,31 @@ public class Ipv4UtilTest {
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);
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}
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private static void testLongToIp(final String ip){
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private static void testLongToIp(final String ip) {
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final long ipLong = Ipv4Util.ipv4ToLong(ip);
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final String ipv4 = Ipv4Util.longToIpv4(ipLong);
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Assert.assertEquals(ip, ipv4);
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}
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@Test
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public void isInnerTest() {
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Assert.assertTrue(Ipv4Util.isInnerIP(Ipv4Util.LOCAL_IP));
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Assert.assertTrue(Ipv4Util.isInnerIP("192.168.5.12"));
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Assert.assertTrue(Ipv4Util.isInnerIP("172.20.10.1"));
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Assert.assertFalse(Ipv4Util.isInnerIP("180.10.2.5"));
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Assert.assertFalse(Ipv4Util.isInnerIP("192.160.10.3"));
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}
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@Test
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public void isPublicTest() {
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Assert.assertTrue(Ipv4Util.isPublicIP("180.10.2.5"));
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Assert.assertTrue(Ipv4Util.isPublicIP("192.160.10.3"));
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Assert.assertFalse(Ipv4Util.isPublicIP(Ipv4Util.LOCAL_IP));
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Assert.assertFalse(Ipv4Util.isPublicIP("192.168.5.12"));
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Assert.assertFalse(Ipv4Util.isPublicIP("127.0.0.1"));
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Assert.assertFalse(Ipv4Util.isPublicIP("172.20.10.1"));
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}
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}
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