✨ Add ipv4, ipv6 and first mask support

lzhpo · Mar 20, 2024 · df56c75 · df56c75
1 parent c7440dc
commit df56c75
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diff --git a/src/main/java/com/lzhpo/sensitive/SensitiveConstants.java b/src/main/java/com/lzhpo/sensitive/SensitiveConstants.java
@@ -25,6 +25,12 @@ public final class SensitiveConstants {
     /** 默认脱敏替换符 */
     public static final char REPLACER = '*';
 
+    /** IPV4分隔符 */
+    public static final char SEPARATOR_IPV4 = '.';
+
+    /** IPV6分隔符 */
+    public static final char SEPARATOR_IPV6 = ':';
+
     /** 不处理脱敏保留的标志 */
     public static final int NOP_KEEP = -1;
 

diff --git a/src/main/java/com/lzhpo/sensitive/SensitiveStrategy.java b/src/main/java/com/lzhpo/sensitive/SensitiveStrategy.java
@@ -106,6 +106,46 @@ public String apply(SensitiveWrapper wrapper) {
         }
     },
 
+    /** IPV4 */
+    IPV4() {
+        @Override
+        public String apply(SensitiveWrapper wrapper) {
+            return SensitiveUtils.ipv4(wrapper.getFieldValue(), wrapper.getReplacer());
+        }
+    },
+
+    /** IPV6 */
+    IPV6() {
+        @Override
+        public String apply(SensitiveWrapper wrapper) {
+            return SensitiveUtils.ipv6(wrapper.getFieldValue(), wrapper.getReplacer());
+        }
+    },
+
+    /** Only show the first one */
+    FIRST_MASK() {
+        @Override
+        public String apply(SensitiveWrapper wrapper) {
+            return SensitiveUtils.firstMask(wrapper.getFieldValue(), wrapper.getReplacer());
+        }
+    },
+
+    /** Clear to null */
+    CLEAR_TO_NULL() {
+        @Override
+        public String apply(SensitiveWrapper wrapper) {
+            return null;
+        }
+    },
+
+    /** Clear to empty */
+    CLEAR_TO_EMPTY() {
+        @Override
+        public String apply(SensitiveWrapper wrapper) {
+            return CharSequenceUtil.EMPTY;
+        }
+    },
+
     /** Customize sensitive keep length */
     CUSTOMIZE_FILTER_WORDS() {
         @Override

diff --git a/src/main/java/com/lzhpo/sensitive/util/SensitiveUtils.java b/src/main/java/com/lzhpo/sensitive/util/SensitiveUtils.java
@@ -277,4 +277,48 @@ public static String bankCard(String bankCardNo, char replacer) {
         buf.append(CharPool.SPACE).append(trimBankCardNo, length - 4, length);
         return buf.toString();
     }
+
+    /**
+     * IPv4脱敏，如：脱敏前：192.0.2.1；脱敏后：192.*.*.*。
+     *
+     * @param ipv4 IPv4地址
+     * @return 脱敏后的地址
+     */
+    public static String ipv4(String ipv4, char replacer) {
+        final StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < 3; i++) {
+            builder.append(SensitiveConstants.SEPARATOR_IPV4);
+            builder.append(replacer);
+        }
+        return CharSequenceUtil.subBefore(ipv4, SensitiveConstants.SEPARATOR_IPV4, false) + builder;
+    }
+
+    /**
+     * IPv4脱敏，如：脱敏前：2001:0db8:86a3:08d3:1319:8a2e:0370:7344；脱敏后：2001:*:*:*:*:*:*:*
+     *
+     * @param ipv6 IPv4地址
+     * @return 脱敏后的地址
+     */
+    public static String ipv6(String ipv6, char replacer) {
+        final StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < 7; i++) {
+            builder.append(SensitiveConstants.SEPARATOR_IPV6);
+            builder.append(replacer);
+        }
+        return CharSequenceUtil.subBefore(ipv6, SensitiveConstants.SEPARATOR_IPV6, false) + builder;
+    }
+
+    /**
+     * 定义了一个first_mask的规则，只显示第一个字符。<br>
+     * 脱敏前：123456789；脱敏后：1********。
+     *
+     * @param str 字符串
+     * @return 脱敏后的字符串
+     */
+    public static String firstMask(String str, char replacer) {
+        if (CharSequenceUtil.isBlank(str)) {
+            return CharSequenceUtil.EMPTY;
+        }
+        return CharSequenceUtil.replace(str, 1, str.length(), replacer);
+    }
 }