From 3c4fee1db116c11d4f04727cfe076d7c94daeaf2 Mon Sep 17 00:00:00 2001
From: yanzhaofeige <yanzhaofeige@qq.com>
Date: Mon, 30 Sep 2024 12:10:57 +0800
Subject: [PATCH] init
---
cpzidc-common/src/main/java/com/odcc/cpzidc/common/utils/ip/IpUtils.java | 382 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 382 insertions(+), 0 deletions(-)
diff --git a/cpzidc-common/src/main/java/com/odcc/cpzidc/common/utils/ip/IpUtils.java b/cpzidc-common/src/main/java/com/odcc/cpzidc/common/utils/ip/IpUtils.java
new file mode 100644
index 0000000..6e01d11
--- /dev/null
+++ b/cpzidc-common/src/main/java/com/odcc/cpzidc/common/utils/ip/IpUtils.java
@@ -0,0 +1,382 @@
+package com.odcc.cpzidc.common.utils.ip;
+
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import javax.servlet.http.HttpServletRequest;
+import com.odcc.cpzidc.common.utils.ServletUtils;
+import com.odcc.cpzidc.common.utils.StringUtils;
+
+/**
+ * 获取IP方法
+ *
+ * @author ruoyi
+ */
+public class IpUtils
+{
+ public final static String REGX_0_255 = "(25[0-5]|2[0-4]\\d|1\\d{2}|[1-9]\\d|\\d)";
+ // 匹配 ip
+ public final static String REGX_IP = "((" + REGX_0_255 + "\\.){3}" + REGX_0_255 + ")";
+ public final static String REGX_IP_WILDCARD = "(((\\*\\.){3}\\*)|(" + REGX_0_255 + "(\\.\\*){3})|(" + REGX_0_255 + "\\." + REGX_0_255 + ")(\\.\\*){2}" + "|((" + REGX_0_255 + "\\.){3}\\*))";
+ // 匹配网段
+ public final static String REGX_IP_SEG = "(" + REGX_IP + "\\-" + REGX_IP + ")";
+
+ /**
+ * 获取客户端IP
+ *
+ * @return IP地址
+ */
+ public static String getIpAddr()
+ {
+ return getIpAddr(ServletUtils.getRequest());
+ }
+
+ /**
+ * 获取客户端IP
+ *
+ * @param request 请求对象
+ * @return IP地址
+ */
+ public static String getIpAddr(HttpServletRequest request)
+ {
+ if (request == null)
+ {
+ return "unknown";
+ }
+ String ip = request.getHeader("x-forwarded-for");
+ if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
+ {
+ ip = request.getHeader("Proxy-Client-IP");
+ }
+ if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
+ {
+ ip = request.getHeader("X-Forwarded-For");
+ }
+ if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
+ {
+ ip = request.getHeader("WL-Proxy-Client-IP");
+ }
+ if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
+ {
+ ip = request.getHeader("X-Real-IP");
+ }
+
+ if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
+ {
+ ip = request.getRemoteAddr();
+ }
+
+ return "0:0:0:0:0:0:0:1".equals(ip) ? "127.0.0.1" : getMultistageReverseProxyIp(ip);
+ }
+
+ /**
+ * 检查是否为内部IP地址
+ *
+ * @param ip IP地址
+ * @return 结果
+ */
+ public static boolean internalIp(String ip)
+ {
+ byte[] addr = textToNumericFormatV4(ip);
+ return internalIp(addr) || "127.0.0.1".equals(ip);
+ }
+
+ /**
+ * 检查是否为内部IP地址
+ *
+ * @param addr byte地址
+ * @return 结果
+ */
+ private static boolean internalIp(byte[] addr)
+ {
+ if (StringUtils.isNull(addr) || addr.length < 2)
+ {
+ 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:
+ switch (b1)
+ {
+ case SECTION_6:
+ return true;
+ }
+ default:
+ return false;
+ }
+ }
+
+ /**
+ * 将IPv4地址转换成字节
+ *
+ * @param text IPv4地址
+ * @return byte 字节
+ */
+ public static byte[] textToNumericFormatV4(String text)
+ {
+ if (text.length() == 0)
+ {
+ return null;
+ }
+
+ byte[] bytes = new byte[4];
+ String[] elements = text.split("\\.", -1);
+ try
+ {
+ long l;
+ int i;
+ switch (elements.length)
+ {
+ case 1:
+ l = Long.parseLong(elements[0]);
+ if ((l < 0L) || (l > 4294967295L))
+ {
+ return null;
+ }
+ bytes[0] = (byte) (int) (l >> 24 & 0xFF);
+ bytes[1] = (byte) (int) ((l & 0xFFFFFF) >> 16 & 0xFF);
+ bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF);
+ bytes[3] = (byte) (int) (l & 0xFF);
+ break;
+ case 2:
+ l = Integer.parseInt(elements[0]);
+ if ((l < 0L) || (l > 255L))
+ {
+ return null;
+ }
+ bytes[0] = (byte) (int) (l & 0xFF);
+ l = Integer.parseInt(elements[1]);
+ if ((l < 0L) || (l > 16777215L))
+ {
+ return null;
+ }
+ bytes[1] = (byte) (int) (l >> 16 & 0xFF);
+ bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF);
+ bytes[3] = (byte) (int) (l & 0xFF);
+ break;
+ case 3:
+ for (i = 0; i < 2; ++i)
+ {
+ l = Integer.parseInt(elements[i]);
+ if ((l < 0L) || (l > 255L))
+ {
+ return null;
+ }
+ bytes[i] = (byte) (int) (l & 0xFF);
+ }
+ l = Integer.parseInt(elements[2]);
+ if ((l < 0L) || (l > 65535L))
+ {
+ return null;
+ }
+ bytes[2] = (byte) (int) (l >> 8 & 0xFF);
+ bytes[3] = (byte) (int) (l & 0xFF);
+ break;
+ case 4:
+ for (i = 0; i < 4; ++i)
+ {
+ l = Integer.parseInt(elements[i]);
+ if ((l < 0L) || (l > 255L))
+ {
+ return null;
+ }
+ bytes[i] = (byte) (int) (l & 0xFF);
+ }
+ break;
+ default:
+ return null;
+ }
+ }
+ catch (NumberFormatException e)
+ {
+ return null;
+ }
+ return bytes;
+ }
+
+ /**
+ * 获取IP地址
+ *
+ * @return 本地IP地址
+ */
+ public static String getHostIp()
+ {
+ try
+ {
+ return InetAddress.getLocalHost().getHostAddress();
+ }
+ catch (UnknownHostException e)
+ {
+ }
+ return "127.0.0.1";
+ }
+
+ /**
+ * 获取主机名
+ *
+ * @return 本地主机名
+ */
+ public static String getHostName()
+ {
+ try
+ {
+ return InetAddress.getLocalHost().getHostName();
+ }
+ catch (UnknownHostException e)
+ {
+ }
+ return "未知";
+ }
+
+ /**
+ * 从多级反向代理中获得第一个非unknown IP地址
+ *
+ * @param ip 获得的IP地址
+ * @return 第一个非unknown IP地址
+ */
+ public static String getMultistageReverseProxyIp(String ip)
+ {
+ // 多级反向代理检测
+ if (ip != null && ip.indexOf(",") > 0)
+ {
+ final String[] ips = ip.trim().split(",");
+ for (String subIp : ips)
+ {
+ if (false == isUnknown(subIp))
+ {
+ ip = subIp;
+ break;
+ }
+ }
+ }
+ return StringUtils.substring(ip, 0, 255);
+ }
+
+ /**
+ * 检测给定字符串是否为未知，多用于检测HTTP请求相关
+ *
+ * @param checkString 被检测的字符串
+ * @return 是否未知
+ */
+ public static boolean isUnknown(String checkString)
+ {
+ return StringUtils.isBlank(checkString) || "unknown".equalsIgnoreCase(checkString);
+ }
+
+ /**
+ * 是否为IP
+ */
+ public static boolean isIP(String ip)
+ {
+ return StringUtils.isNotBlank(ip) && ip.matches(REGX_IP);
+ }
+
+ /**
+ * 是否为IP，或 *为间隔的通配符地址
+ */
+ public static boolean isIpWildCard(String ip)
+ {
+ return StringUtils.isNotBlank(ip) && ip.matches(REGX_IP_WILDCARD);
+ }
+
+ /**
+ * 检测参数是否在ip通配符里
+ */
+ public static boolean ipIsInWildCardNoCheck(String ipWildCard, String ip)
+ {
+ String[] s1 = ipWildCard.split("\\.");
+ String[] s2 = ip.split("\\.");
+ boolean isMatchedSeg = true;
+ for (int i = 0; i < s1.length && !s1[i].equals("*"); i++)
+ {
+ if (!s1[i].equals(s2[i]))
+ {
+ isMatchedSeg = false;
+ break;
+ }
+ }
+ return isMatchedSeg;
+ }
+
+ /**
+ * 是否为特定格式如:“10.10.10.1-10.10.10.99”的ip段字符串
+ */
+ public static boolean isIPSegment(String ipSeg)
+ {
+ return StringUtils.isNotBlank(ipSeg) && ipSeg.matches(REGX_IP_SEG);
+ }
+
+ /**
+ * 判断ip是否在指定网段中
+ */
+ public static boolean ipIsInNetNoCheck(String iparea, String ip)
+ {
+ int idx = iparea.indexOf('-');
+ String[] sips = iparea.substring(0, idx).split("\\.");
+ String[] sipe = iparea.substring(idx + 1).split("\\.");
+ String[] sipt = ip.split("\\.");
+ long ips = 0L, ipe = 0L, ipt = 0L;
+ for (int i = 0; i < 4; ++i)
+ {
+ ips = ips << 8 | Integer.parseInt(sips[i]);
+ ipe = ipe << 8 | Integer.parseInt(sipe[i]);
+ ipt = ipt << 8 | Integer.parseInt(sipt[i]);
+ }
+ if (ips > ipe)
+ {
+ long t = ips;
+ ips = ipe;
+ ipe = t;
+ }
+ return ips <= ipt && ipt <= ipe;
+ }
+
+ /**
+ * 校验ip是否符合过滤串规则
+ *
+ * @param filter 过滤IP列表,支持后缀'*'通配,支持网段如:`10.10.10.1-10.10.10.99`
+ * @param ip 校验IP地址
+ * @return boolean 结果
+ */
+ public static boolean isMatchedIp(String filter, String ip)
+ {
+ if (StringUtils.isEmpty(filter) || StringUtils.isEmpty(ip))
+ {
+ return false;
+ }
+ String[] ips = filter.split(";");
+ for (String iStr : ips)
+ {
+ if (isIP(iStr) && iStr.equals(ip))
+ {
+ return true;
+ }
+ else if (isIpWildCard(iStr) && ipIsInWildCardNoCheck(iStr, ip))
+ {
+ return true;
+ }
+ else if (isIPSegment(iStr) && ipIsInNetNoCheck(iStr, ip))
+ {
+ return true;
+ }
+ }
+ return false;
+ }
+}
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