https://tomcat.apache.org/: Tomcat Servlet Engine Core Classes and Standard implementations 
public final class org.apache.catalina.valves.RemoteCIDRValve extends org.apache.catalina.valves.ValveBase
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.apache.catalina.valves.RemoteCIDRValve
  super_class: org.apache.catalina.valves.ValveBase
{
  private static final org.apache.juli.logging.Log log;
    descriptor: Lorg/apache/juli/logging/Log;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private final java.util.List<org.apache.catalina.util.NetMask> allow;
    descriptor: Ljava/util/List;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/List<Lorg/apache/catalina/util/NetMask;>;

  private final java.util.List<org.apache.catalina.util.NetMask> deny;
    descriptor: Ljava/util/List;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/List<Lorg/apache/catalina/util/NetMask;>;

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 41
            ldc Lorg/apache/catalina/valves/RemoteCIDRValve;
            invokestatic org.apache.juli.logging.LogFactory.getLog:(Ljava/lang/Class;)Lorg/apache/juli/logging/Log;
            putstatic org.apache.catalina.valves.RemoteCIDRValve.log:Lorg/apache/juli/logging/Log;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.apache.catalina.valves.RemoteCIDRValve this
         0: .line 55
            aload 0 /* this */
            iconst_1
            invokespecial org.apache.catalina.valves.ValveBase.<init>:(Z)V
         1: .line 46
            aload 0 /* this */
            new java.util.ArrayList
            dup
            invokespecial java.util.ArrayList.<init>:()V
            putfield org.apache.catalina.valves.RemoteCIDRValve.allow:Ljava/util/List;
         2: .line 51
            aload 0 /* this */
            new java.util.ArrayList
            dup
            invokespecial java.util.ArrayList.<init>:()V
            putfield org.apache.catalina.valves.RemoteCIDRValve.deny:Ljava/util/List;
         3: .line 56
            return
        end local 0 // org.apache.catalina.valves.RemoteCIDRValve this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/apache/catalina/valves/RemoteCIDRValve;

  public java.lang.String getAllow();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.apache.catalina.valves.RemoteCIDRValve this
         0: .line 66
            aload 0 /* this */
            getfield org.apache.catalina.valves.RemoteCIDRValve.allow:Ljava/util/List;
            invokevirtual java.lang.Object.toString:()Ljava/lang/String;
            ldc "["
            ldc ""
            invokevirtual java.lang.String.replace:(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;
            ldc "]"
            ldc ""
            invokevirtual java.lang.String.replace:(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;
            areturn
        end local 0 // org.apache.catalina.valves.RemoteCIDRValve this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/catalina/valves/RemoteCIDRValve;

  public void setAllow(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=5, args_size=2
        start local 0 // org.apache.catalina.valves.RemoteCIDRValve this
        start local 1 // java.lang.String input
         0: .line 78
            aload 0 /* this */
            aload 1 /* input */
            aload 0 /* this */
            getfield org.apache.catalina.valves.RemoteCIDRValve.allow:Ljava/util/List;
            invokevirtual org.apache.catalina.valves.RemoteCIDRValve.fillFromInput:(Ljava/lang/String;Ljava/util/List;)Ljava/util/List;
            astore 2 /* messages */
        start local 2 // java.util.List messages
         1: .line 80
            aload 2 /* messages */
            invokeinterface java.util.List.isEmpty:()Z
            ifeq 3
         2: .line 81
            return
         3: .line 84
      StackMap locals: java.util.List
      StackMap stack:
            aload 2 /* messages */
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            astore 4
            goto 6
      StackMap locals: org.apache.catalina.valves.RemoteCIDRValve java.lang.String java.util.List top java.util.Iterator
      StackMap stack:
         4: aload 4
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast java.lang.String
            astore 3 /* message */
        start local 3 // java.lang.String message
         5: .line 85
            getstatic org.apache.catalina.valves.RemoteCIDRValve.log:Lorg/apache/juli/logging/Log;
            aload 3 /* message */
            invokeinterface org.apache.juli.logging.Log.error:(Ljava/lang/Object;)V
        end local 3 // java.lang.String message
         6: .line 84
      StackMap locals:
      StackMap stack:
            aload 4
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 4
         7: .line 88
            new java.lang.IllegalArgumentException
            dup
            getstatic org.apache.catalina.valves.RemoteCIDRValve.sm:Lorg/apache/tomcat/util/res/StringManager;
            ldc "remoteCidrValve.invalid"
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            ldc "allow"
            aastore
            invokevirtual org.apache.tomcat.util.res.StringManager.getString:(Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        end local 2 // java.util.List messages
        end local 1 // java.lang.String input
        end local 0 // org.apache.catalina.valves.RemoteCIDRValve this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    8     0      this  Lorg/apache/catalina/valves/RemoteCIDRValve;
            0    8     1     input  Ljava/lang/String;
            1    8     2  messages  Ljava/util/List<Ljava/lang/String;>;
            5    6     3   message  Ljava/lang/String;
    MethodParameters:
       Name  Flags
      input  final

  public java.lang.String getDeny();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.apache.catalina.valves.RemoteCIDRValve this
         0: .line 99
            aload 0 /* this */
            getfield org.apache.catalina.valves.RemoteCIDRValve.deny:Ljava/util/List;
            invokevirtual java.lang.Object.toString:()Ljava/lang/String;
            ldc "["
            ldc ""
            invokevirtual java.lang.String.replace:(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;
            ldc "]"
            ldc ""
            invokevirtual java.lang.String.replace:(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;
            areturn
        end local 0 // org.apache.catalina.valves.RemoteCIDRValve this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/catalina/valves/RemoteCIDRValve;

  public void setDeny(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=5, args_size=2
        start local 0 // org.apache.catalina.valves.RemoteCIDRValve this
        start local 1 // java.lang.String input
         0: .line 112
            aload 0 /* this */
            aload 1 /* input */
            aload 0 /* this */
            getfield org.apache.catalina.valves.RemoteCIDRValve.deny:Ljava/util/List;
            invokevirtual org.apache.catalina.valves.RemoteCIDRValve.fillFromInput:(Ljava/lang/String;Ljava/util/List;)Ljava/util/List;
            astore 2 /* messages */
        start local 2 // java.util.List messages
         1: .line 114
            aload 2 /* messages */
            invokeinterface java.util.List.isEmpty:()Z
            ifeq 3
         2: .line 115
            return
         3: .line 118
      StackMap locals: java.util.List
      StackMap stack:
            aload 2 /* messages */
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            astore 4
            goto 6
      StackMap locals: org.apache.catalina.valves.RemoteCIDRValve java.lang.String java.util.List top java.util.Iterator
      StackMap stack:
         4: aload 4
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast java.lang.String
            astore 3 /* message */
        start local 3 // java.lang.String message
         5: .line 119
            getstatic org.apache.catalina.valves.RemoteCIDRValve.log:Lorg/apache/juli/logging/Log;
            aload 3 /* message */
            invokeinterface org.apache.juli.logging.Log.error:(Ljava/lang/Object;)V
        end local 3 // java.lang.String message
         6: .line 118
      StackMap locals:
      StackMap stack:
            aload 4
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 4
         7: .line 122
            new java.lang.IllegalArgumentException
            dup
            getstatic org.apache.catalina.valves.RemoteCIDRValve.sm:Lorg/apache/tomcat/util/res/StringManager;
            ldc "remoteCidrValve.invalid"
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            ldc "deny"
            aastore
            invokevirtual org.apache.tomcat.util.res.StringManager.getString:(Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        end local 2 // java.util.List messages
        end local 1 // java.lang.String input
        end local 0 // org.apache.catalina.valves.RemoteCIDRValve this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    8     0      this  Lorg/apache/catalina/valves/RemoteCIDRValve;
            0    8     1     input  Ljava/lang/String;
            1    8     2  messages  Ljava/util/List<Ljava/lang/String;>;
            5    6     3   message  Ljava/lang/String;
    MethodParameters:
       Name  Flags
      input  final

  public void invoke(org.apache.catalina.connector.Request, org.apache.catalina.connector.Response);
    descriptor: (Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.apache.catalina.valves.RemoteCIDRValve this
        start local 1 // org.apache.catalina.connector.Request request
        start local 2 // org.apache.catalina.connector.Response response
         0: .line 129
            aload 0 /* this */
            aload 1 /* request */
            invokevirtual org.apache.catalina.connector.Request.getRequest:()Ljakarta/servlet/http/HttpServletRequest;
            invokeinterface jakarta.servlet.http.HttpServletRequest.getRemoteAddr:()Ljava/lang/String;
            invokevirtual org.apache.catalina.valves.RemoteCIDRValve.isAllowed:(Ljava/lang/String;)Z
            ifeq 3
         1: .line 130
            aload 0 /* this */
            invokevirtual org.apache.catalina.valves.RemoteCIDRValve.getNext:()Lorg/apache/catalina/Valve;
            aload 1 /* request */
            aload 2 /* response */
            invokeinterface org.apache.catalina.Valve.invoke:(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V
         2: .line 131
            goto 4
         3: .line 132
      StackMap locals:
      StackMap stack:
            aload 2 /* response */
            sipush 403
            invokevirtual org.apache.catalina.connector.Response.sendError:(I)V
         4: .line 134
      StackMap locals:
      StackMap stack:
            return
        end local 2 // org.apache.catalina.connector.Response response
        end local 1 // org.apache.catalina.connector.Request request
        end local 0 // org.apache.catalina.valves.RemoteCIDRValve this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    5     0      this  Lorg/apache/catalina/valves/RemoteCIDRValve;
            0    5     1   request  Lorg/apache/catalina/connector/Request;
            0    5     2  response  Lorg/apache/catalina/connector/Response;
    Exceptions:
      throws java.io.IOException, jakarta.servlet.ServletException
    MethodParameters:
          Name  Flags
      request   final
      response  final

  private boolean isAllowed(java.lang.String);
    descriptor: (Ljava/lang/String;)Z
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=5, args_size=2
        start local 0 // org.apache.catalina.valves.RemoteCIDRValve this
        start local 1 // java.lang.String property
         0: .line 140
            aload 1 /* property */
            invokestatic java.net.InetAddress.getByName:(Ljava/lang/String;)Ljava/net/InetAddress;
            astore 2 /* addr */
        start local 2 // java.net.InetAddress addr
         1: .line 141
            goto 5
        end local 2 // java.net.InetAddress addr
      StackMap locals:
      StackMap stack: java.net.UnknownHostException
         2: astore 3 /* e */
        start local 3 // java.net.UnknownHostException e
         3: .line 144
            getstatic org.apache.catalina.valves.RemoteCIDRValve.log:Lorg/apache/juli/logging/Log;
            getstatic org.apache.catalina.valves.RemoteCIDRValve.sm:Lorg/apache/tomcat/util/res/StringManager;
            ldc "remoteCidrValve.noRemoteIp"
            invokevirtual org.apache.tomcat.util.res.StringManager.getString:(Ljava/lang/String;)Ljava/lang/String;
            aload 3 /* e */
            invokeinterface org.apache.juli.logging.Log.error:(Ljava/lang/Object;Ljava/lang/Throwable;)V
         4: .line 145
            iconst_0
            ireturn
        end local 3 // java.net.UnknownHostException e
        start local 2 // java.net.InetAddress addr
         5: .line 148
      StackMap locals: java.net.InetAddress
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.catalina.valves.RemoteCIDRValve.deny:Ljava/util/List;
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            astore 4
            goto 9
      StackMap locals: org.apache.catalina.valves.RemoteCIDRValve java.lang.String java.net.InetAddress top java.util.Iterator
      StackMap stack:
         6: aload 4
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.apache.catalina.util.NetMask
            astore 3 /* nm */
        start local 3 // org.apache.catalina.util.NetMask nm
         7: .line 149
            aload 3 /* nm */
            aload 2 /* addr */
            invokevirtual org.apache.catalina.util.NetMask.matches:(Ljava/net/InetAddress;)Z
            ifeq 9
         8: .line 150
            iconst_0
            ireturn
        end local 3 // org.apache.catalina.util.NetMask nm
         9: .line 148
      StackMap locals:
      StackMap stack:
            aload 4
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 6
        10: .line 154
            aload 0 /* this */
            getfield org.apache.catalina.valves.RemoteCIDRValve.allow:Ljava/util/List;
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            astore 4
            goto 14
      StackMap locals:
      StackMap stack:
        11: aload 4
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.apache.catalina.util.NetMask
            astore 3 /* nm */
        start local 3 // org.apache.catalina.util.NetMask nm
        12: .line 155
            aload 3 /* nm */
            aload 2 /* addr */
            invokevirtual org.apache.catalina.util.NetMask.matches:(Ljava/net/InetAddress;)Z
            ifeq 14
        13: .line 156
            iconst_1
            ireturn
        end local 3 // org.apache.catalina.util.NetMask nm
        14: .line 154
      StackMap locals:
      StackMap stack:
            aload 4
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 11
        15: .line 161
            aload 0 /* this */
            getfield org.apache.catalina.valves.RemoteCIDRValve.deny:Ljava/util/List;
            invokeinterface java.util.List.isEmpty:()Z
            ifne 17
            aload 0 /* this */
            getfield org.apache.catalina.valves.RemoteCIDRValve.allow:Ljava/util/List;
            invokeinterface java.util.List.isEmpty:()Z
            ifeq 17
        16: .line 162
            iconst_1
            ireturn
        17: .line 166
      StackMap locals: org.apache.catalina.valves.RemoteCIDRValve java.lang.String java.net.InetAddress
      StackMap stack:
            iconst_0
            ireturn
        end local 2 // java.net.InetAddress addr
        end local 1 // java.lang.String property
        end local 0 // org.apache.catalina.valves.RemoteCIDRValve this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   18     0      this  Lorg/apache/catalina/valves/RemoteCIDRValve;
            0   18     1  property  Ljava/lang/String;
            1    2     2      addr  Ljava/net/InetAddress;
            5   18     2      addr  Ljava/net/InetAddress;
            3    5     3         e  Ljava/net/UnknownHostException;
            7    9     3        nm  Lorg/apache/catalina/util/NetMask;
           12   14     3        nm  Lorg/apache/catalina/util/NetMask;
      Exception table:
        from    to  target  type
           0     1       2  Class java.net.UnknownHostException
    MethodParameters:
          Name  Flags
      property  final

  private java.util.List<java.lang.String> fillFromInput(java.lang.String, java.util.List<org.apache.catalina.util.NetMask>);
    descriptor: (Ljava/lang/String;Ljava/util/List;)Ljava/util/List;
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=4, locals=10, args_size=3
        start local 0 // org.apache.catalina.valves.RemoteCIDRValve this
        start local 1 // java.lang.String input
        start local 2 // java.util.List target
         0: .line 180
            aload 2 /* target */
            invokeinterface java.util.List.clear:()V
         1: .line 181
            aload 1 /* input */
            ifnull 2
            aload 1 /* input */
            invokevirtual java.lang.String.isEmpty:()Z
            ifeq 3
         2: .line 182
      StackMap locals:
      StackMap stack:
            invokestatic java.util.Collections.emptyList:()Ljava/util/List;
            areturn
         3: .line 185
      StackMap locals:
      StackMap stack:
            new java.util.LinkedList
            dup
            invokespecial java.util.LinkedList.<init>:()V
            astore 3 /* messages */
        start local 3 // java.util.List messages
         4: .line 188
            aload 1 /* input */
            ldc "\\s*,\\s*"
            invokevirtual java.lang.String.split:(Ljava/lang/String;)[Ljava/lang/String;
            dup
            astore 8
            arraylength
            istore 7
            iconst_0
            istore 6
            goto 12
      StackMap locals: org.apache.catalina.valves.RemoteCIDRValve java.lang.String java.util.List java.util.List top top int int java.lang.String[]
      StackMap stack:
         5: aload 8
            iload 6
            aaload
            astore 5 /* s */
        start local 5 // java.lang.String s
         6: .line 190
            new org.apache.catalina.util.NetMask
            dup
            aload 5 /* s */
            invokespecial org.apache.catalina.util.NetMask.<init>:(Ljava/lang/String;)V
            astore 4 /* nm */
        start local 4 // org.apache.catalina.util.NetMask nm
         7: .line 191
            aload 2 /* target */
            aload 4 /* nm */
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
         8: .line 192
            goto 11
        end local 4 // org.apache.catalina.util.NetMask nm
      StackMap locals: org.apache.catalina.valves.RemoteCIDRValve java.lang.String java.util.List java.util.List top java.lang.String int int java.lang.String[]
      StackMap stack: java.lang.IllegalArgumentException
         9: astore 9 /* e */
        start local 9 // java.lang.IllegalArgumentException e
        10: .line 193
            aload 3 /* messages */
            new java.lang.StringBuilder
            dup
            aload 5 /* s */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc ": "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 9 /* e */
            invokevirtual java.lang.IllegalArgumentException.getMessage:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
        end local 9 // java.lang.IllegalArgumentException e
        end local 5 // java.lang.String s
        11: .line 188
      StackMap locals: org.apache.catalina.valves.RemoteCIDRValve java.lang.String java.util.List java.util.List top top int int java.lang.String[]
      StackMap stack:
            iinc 6 1
      StackMap locals:
      StackMap stack:
        12: iload 6
            iload 7
            if_icmplt 5
        13: .line 197
            aload 3 /* messages */
            invokestatic java.util.Collections.unmodifiableList:(Ljava/util/List;)Ljava/util/List;
            areturn
        end local 3 // java.util.List messages
        end local 2 // java.util.List target
        end local 1 // java.lang.String input
        end local 0 // org.apache.catalina.valves.RemoteCIDRValve this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   14     0      this  Lorg/apache/catalina/valves/RemoteCIDRValve;
            0   14     1     input  Ljava/lang/String;
            0   14     2    target  Ljava/util/List<Lorg/apache/catalina/util/NetMask;>;
            4   14     3  messages  Ljava/util/List<Ljava/lang/String;>;
            7    9     4        nm  Lorg/apache/catalina/util/NetMask;
            6   11     5         s  Ljava/lang/String;
           10   11     9         e  Ljava/lang/IllegalArgumentException;
      Exception table:
        from    to  target  type
           6     8       9  Class java.lang.IllegalArgumentException
    Signature: (Ljava/lang/String;Ljava/util/List<Lorg/apache/catalina/util/NetMask;>;)Ljava/util/List<Ljava/lang/String;>;
    MethodParameters:
        Name  Flags
      input   final
      target  final
}
SourceFile: "RemoteCIDRValve.java"