/*
 * Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

// This class has an entry in its PermittedSubclasses attribute that does not exist.
// Test that JVM_GetPermittedSubclasses() only returns the existing class.
//
// sealed class NoLoadSubclasses permits ExistingClassFile, I/Dont/Exist/Either { }
//
class NoLoadSubclasses {
  0xCAFEBABE;
  0; // minor version
  61; // version
  [18] { // Constant Pool
    ; // first element is empty
    Method #2 #3; // #1     at 0x0A
    class #4; // #2     at 0x0F
    NameAndType #5 #6; // #3     at 0x12
    Utf8 "java/lang/Object"; // #4     at 0x17
    Utf8 "<init>"; // #5     at 0x2A
    Utf8 "()V"; // #6     at 0x33
    class #8; // #7     at 0x39
    Utf8 "NoLoadSubclasses"; // #8     at 0x3C
    Utf8 "Code"; // #9     at 0x4D
    Utf8 "LineNumberTable"; // #10     at 0x54
    Utf8 "SourceFile"; // #11     at 0x66
    Utf8 "NoLoadSubclasses.java"; // #12     at 0x73
    Utf8 "PermittedSubclasses"; // #13     at 0x89
    class #15; // #14     at 0x9D
    Utf8 "ExistingClassFile"; // #15     at 0xA0
    class #17; // #16     at 0xAA
    Utf8 "I/Dont/Exist/Either"; // #17     at 0xAD
  } // Constant Pool

  0x0020; // access [ ACC_SUPER ]
  #7;// this_cpx
  #2;// super_cpx

  [0] { // Interfaces
  } // Interfaces

  [0] { // fields
  } // fields

  [1] { // methods
    { // Member at 0xC1
      0x0000; // access
      #5; // name_cpx
      #6; // sig_cpx
      [1] { // Attributes
        Attr(#9, 29) { // Code at 0xC9
          1; // max_stack
          1; // max_locals
          Bytes[5]{
            0x2AB70001B1;
          }
          [0] { // Traps
          } // end Traps
          [1] { // Attributes
            Attr(#10, 6) { // LineNumberTable at 0xE0
              [1] { // LineNumberTable
                0  1; //  at 0xEC
              }
            } // end LineNumberTable
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
  } // methods

  [2] { // Attributes
    Attr(#13, 6) { // PermittedSubclasses at 0xF6
      0x0002000E0010;
    } // end PermittedSubclasses
    ;
    Attr(#11, 2) { // SourceFile at 0xEE
      #12;
    } // end SourceFile
  } // Attributes
} // end class NoLoadSubclasses

// class ExistingClassFile extends NoLoadSubclasses { }
//
class ExistingClassFile {
  0xCAFEBABE;
  0; // minor version
  55; // version
  [] { // Constant Pool
    ; // first element is empty
    Method #3 #10; // #1
    class #11; // #2
    class #12; // #3
    Utf8 "<init>"; // #4
    Utf8 "()V"; // #5
    Utf8 "Code"; // #6
    Utf8 "LineNumberTable"; // #7
    Utf8 "SourceFile"; // #8
    Utf8 "ExistingClassFile.java"; // #9
    NameAndType #4 #5; // #10
    Utf8 "ExistingClassFile"; // #11
    Utf8 "NoLoadSubclasses"; // #12
  } // Constant Pool

  0x0021; // access
  #2;// this_cpx
  #3;// super_cpx

  [] { // Interfaces
  } // Interfaces

  [] { // Fields
  } // Fields

  [] { // Methods
    {  // method
      0x0001; // access
      #4; // name_index
      #5; // descriptor_index
      [] { // Attributes
        Attr(#6) { // Code
          1; // max_stack
          1; // max_locals
          Bytes[]{
            0x2AB70001B1;
          }
          [] { // Traps
          } // end Traps
          [] { // Attributes
            Attr(#7) { // LineNumberTable
              [] { // line_number_table
                0  1;
              }
            } // end LineNumberTable
          } // Attributes
        } // end Code
      } // Attributes
    }
  } // Methods

  [] { // Attributes
    Attr(#8) { // SourceFile
      #9;
    } // end SourceFile
  } // Attributes
} // end class ExistingClassFile

// This class contains an empty PermittedSubclasses attribute.  Test that
// this does not cause an exception to get thrown.
class NoSubclasses {
  0xCAFEBABE;
  0; // minor version
  61; // version
  [14] { // Constant Pool
    ; // first element is empty
    Method #2 #3; // #1     at 0x0A
    class #4; // #2     at 0x0F
    NameAndType #5 #6; // #3     at 0x12
    Utf8 "java/lang/Object"; // #4     at 0x17
    Utf8 "<init>"; // #5     at 0x2A
    Utf8 "()V"; // #6     at 0x33
    class #8; // #7     at 0x39
    Utf8 "NoSubclasses"; // #8     at 0x3C
    Utf8 "Code"; // #9     at 0x49
    Utf8 "LineNumberTable"; // #10     at 0x50
    Utf8 "SourceFile"; // #11     at 0x62
    Utf8 "NoSubclasses.java"; // #12     at 0x6F
    Utf8 "PermittedSubclasses"; // #13     at 0x81
  } // Constant Pool

  0x0020; // access [ ACC_SUPER ]
  #7;// this_cpx
  #2;// super_cpx

  [0] { // Interfaces
  } // Interfaces

  [0] { // fields
  } // fields

  [1] { // methods
    { // Member at 0xAB
      0x0000; // access
      #5; // name_cpx
      #6; // sig_cpx
      [1] { // Attributes
        Attr(#9, 29) { // Code at 0xB3
          1; // max_stack
          1; // max_locals
          Bytes[5]{
            0x2AB70001B1;
          }
          [0] { // Traps
          } // end Traps
          [1] { // Attributes
            Attr(#10, 6) { // LineNumberTable at 0xCA
              [1] { // LineNumberTable
                0  1; //  at 0xD6
              }
            } // end LineNumberTable
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
  } // methods

  [2] { // Attributes
    Attr(#13, 2) { // PermittedSubclasses at 0xE0
      0x0000;
    } // end PermittedSubclasses
    ;
    Attr(#11, 2) { // SourceFile at 0xD8
      #12;
    } // end SourceFile
  } // Attributes
} // end class NoSubclasses


// This class extends NoSubClasses to show that a class with an empty
// PermittedSubtypes attribute cannot be subclass-ed.
class SubClass {
  0xCAFEBABE;
  0; // minor version
  61; // version
  [13] { // Constant Pool
    ; // first element is empty
    Method #2 #3; // #1     at 0x0A
    class #4; // #2     at 0x0F
    NameAndType #5 #6; // #3     at 0x12
    Utf8 "NoSubclasses"; // #4     at 0x17
    Utf8 "<init>"; // #5     at 0x26
    Utf8 "()V"; // #6     at 0x2F
    class #8; // #7     at 0x35
    Utf8 "SubClass"; // #8     at 0x38
    Utf8 "Code"; // #9     at 0x43
    Utf8 "LineNumberTable"; // #10     at 0x4A
    Utf8 "SourceFile"; // #11     at 0x5C
    Utf8 "SubClass.java"; // #12     at 0x69
  } // Constant Pool

  0x0021; // access [ ACC_PUBLIC ACC_SUPER ]
  #7;// this_cpx
  #2;// super_cpx

  [0] { // Interfaces
  } // Interfaces

  [0] { // Fields
  } // Fields

  [1] { // Methods
    {  // method at 0x85
      0x0001; // access
      #5; // name_index       : <init>
      #6; // descriptor_index : ()V
      [1] { // Attributes
        Attr(#9, 29) { // Code at 0x8D
          1; // max_stack
          1; // max_locals
          Bytes[5]{
            0x2AB70001B1;
          }
          [0] { // Traps
          } // end Traps
          [1] { // Attributes
            Attr(#10, 6) { // LineNumberTable at 0xA4
              [1] { // line_number_table
                0  1; //  at 0xB0
              }
            } // end LineNumberTable
          } // Attributes
        } // end Code
      } // Attributes
    }
  } // Methods

  [1] { // Attributes
    Attr(#11, 2) { // SourceFile at 0xB2
      #12;
    } // end SourceFile
  } // Attributes
} // end class SubClass


// This class has a PermittedSubclasses attribute but an old class file version.
// The PermittedSubclasses attribute should be ignored.
//
// sealed class OldClassFile permits iDontExist, I/Dont/Exist/Either { }
//
class OldClassFile {
  0xCAFEBABE;
  0; // minor version
  57; // version
  [18] { // Constant Pool
    ; // first element is empty
    Method #2 #3; // #1     at 0x0A
    class #4; // #2     at 0x0F
    NameAndType #5 #6; // #3     at 0x12
    Utf8 "java/lang/Object"; // #4     at 0x17
    Utf8 "<init>"; // #5     at 0x2A
    Utf8 "()V"; // #6     at 0x33
    class #8; // #7     at 0x39
    Utf8 "OldClassFile"; // #8     at 0x3C
    Utf8 "Code"; // #9     at 0x4D
    Utf8 "LineNumberTable"; // #10     at 0x54
    Utf8 "SourceFile"; // #11     at 0x66
    Utf8 "OldClassFile.java"; // #12     at 0x73
    Utf8 "PermittedSubclasses"; // #13     at 0x89
    class #15; // #14     at 0x9D
    Utf8 "iDontExist"; // #15     at 0xA0
    class #17; // #16     at 0xAA
    Utf8 "I/Dont/Exist/Either"; // #17     at 0xAD
  } // Constant Pool

  0x0030; // access [ ACC_SUPER ACC_FINAL ]
  #7;// this_cpx
  #2;// super_cpx

  [0] { // Interfaces
  } // Interfaces

  [0] { // fields
  } // fields

  [1] { // methods
    { // Member at 0xC1
      0x0000; // access
      #5; // name_cpx
      #6; // sig_cpx
      [1] { // Attributes
        Attr(#9, 29) { // Code at 0xC9
          1; // max_stack
          1; // max_locals
          Bytes[5]{
            0x2AB70001B1;
          }
          [0] { // Traps
          } // end Traps
          [1] { // Attributes
            Attr(#10, 6) { // LineNumberTable at 0xE0
              [1] { // LineNumberTable
                0  1; //  at 0xEC
              }
            } // end LineNumberTable
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
  } // methods

  [2] { // Attributes
    Attr(#11, 2) { // SourceFile at 0xEE
      #12;
    } // end SourceFile
    ;
    Attr(#13, 6) { // PermittedSubclasses at 0xF6
      0x0002000E0010;
    } // end PermittedSubclasses
  } // Attributes
} // end class OldClassFile


// This class has a corrupted PermittedSubclasses attribute.  Attempts to load it
// should throw ClassFormatError.
class BadPermittedAttr {
  0xCAFEBABE;
  0; // minor version
  61; // version
  [18] { // Constant Pool
    ; // first element is empty
    Method #2 #3; // #1     at 0x0A
    class #4; // #2     at 0x0F
    NameAndType #5 #6; // #3     at 0x12
    Utf8 "java/lang/Object"; // #4     at 0x17
    Utf8 "<init>"; // #5     at 0x2A
    Utf8 "()V"; // #6     at 0x33
    class #8; // #7     at 0x39
    Utf8 "BadPermittedAttr"; // #8     at 0x3C
    Utf8 "Code"; // #9     at 0x4D
    Utf8 "LineNumberTable"; // #10     at 0x54
    Utf8 "SourceFile"; // #11     at 0x66
    Utf8 "BadPermittedAttr.java"; // #12     at 0x73
    Utf8 "PermittedSubclasses"; // #13     at 0x89
    class #15; // #14     at 0x9D
    Utf8 "iDontExist"; // #15     at 0xA0
    class #17; // #16     at 0xAA
    Utf8 "I/Dont/Exist/Either"; // #17     at 0xAD
  } // Constant Pool

  0x0020; // access [ ACC_SUPER ]
  #7;// this_cpx
  #2;// super_cpx

  [0] { // Interfaces
  } // Interfaces

  [0] { // fields
  } // fields

  [1] { // methods
    { // Member at 0xC1
      0x0000; // access
      #5; // name_cpx
      #6; // sig_cpx
      [1] { // Attributes
        Attr(#9, 29) { // Code at 0xC9
          1; // max_stack
          1; // max_locals
          Bytes[5]{
            0x2AB70001B1;
          }
          [0] { // Traps
          } // end Traps
          [1] { // Attributes
            Attr(#10, 6) { // LineNumberTable at 0xE0
              [1] { // LineNumberTable
                0  1; //  at 0xEC
              }
            } // end LineNumberTable
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
  } // methods

  [2] { // Attributes
    Attr(#11, 2) { // SourceFile at 0xEE
      #12;
    } // end SourceFile
    ;
    Attr(#13, 6) { // PermittedSubclasses at 0xF6
      0x0002000F0010;
    } // end PermittedSubclasses
  } // Attributes
} // end class BadPermittedAttr


// This class has a PermittedSubclasses attribute and is marked Final.
// Loading this class should throw a ClassFormatError exception.
//
// sealed class SealedButFinal permits iDontExist, I/Dont/Exist/Either { }
//
class SealedButFinal {
  0xCAFEBABE;
  0; // minor version
  61; // version
  [18] { // Constant Pool
    ; // first element is empty
    Method #2 #3; // #1     at 0x0A
    class #4; // #2     at 0x0F
    NameAndType #5 #6; // #3     at 0x12
    Utf8 "java/lang/Object"; // #4     at 0x17
    Utf8 "<init>"; // #5     at 0x2A
    Utf8 "()V"; // #6     at 0x33
    class #8; // #7     at 0x39
    Utf8 "SealedButFinal"; // #8     at 0x3C
    Utf8 "Code"; // #9     at 0x4D
    Utf8 "LineNumberTable"; // #10     at 0x54
    Utf8 "SourceFile"; // #11     at 0x66
    Utf8 "SealedButFinal.java"; // #12     at 0x73
    Utf8 "PermittedSubclasses"; // #13     at 0x89
    class #15; // #14     at 0x9D
    Utf8 "iDontExist"; // #15     at 0xA0
    class #17; // #16     at 0xAA
    Utf8 "I/Dont/Exist/Either"; // #17     at 0xAD
  } // Constant Pool

  0x0030; // access [ ACC_SUPER ACC_FINAL ]
  #7;// this_cpx
  #2;// super_cpx

  [0] { // Interfaces
  } // Interfaces

  [0] { // fields
  } // fields

  [1] { // methods
    { // Member at 0xC1
      0x0000; // access
      #5; // name_cpx
      #6; // sig_cpx
      [1] { // Attributes
        Attr(#9, 29) { // Code at 0xC9
          1; // max_stack
          1; // max_locals
          Bytes[5]{
            0x2AB70001B1;
          }
          [0] { // Traps
          } // end Traps
          [1] { // Attributes
            Attr(#10, 6) { // LineNumberTable at 0xE0
              [1] { // LineNumberTable
                0  1; //  at 0xEC
              }
            } // end LineNumberTable
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
  } // methods

  [2] { // Attributes
    Attr(#11, 2) { // SourceFile at 0xEE
      #12;
    } // end SourceFile
    ;
    Attr(#13, 6) { // PermittedSubclasses at 0xF6
      0x0002000E0010;
    } // end PermittedSubclasses
  } // Attributes
} // end class SealedButFinal


// This class contains a PermittedSubclasses attribute with an invalid class
// name.  Test that this causes a ClassFormatError exception to get thrown.
//
// sealed class BadPermittedSubclassEntry permits iDont;;Exist, I/Dont/Exist/Either { }
//
class BadPermittedSubclassEntry {
  0xCAFEBABE;
  0; // minor version
  61; // version
  [18] { // Constant Pool
    ; // first element is empty
    Method #2 #3; // #1     at 0x0A
    class #4; // #2     at 0x0F
    NameAndType #5 #6; // #3     at 0x12
    Utf8 "java/lang/Object"; // #4     at 0x17
    Utf8 "<init>"; // #5     at 0x2A
    Utf8 "()V"; // #6     at 0x33
    class #8; // #7     at 0x39
    Utf8 "BadPermittedSubclassEntry"; // #8     at 0x3C
    Utf8 "Code"; // #9     at 0x4D
    Utf8 "LineNumberTable"; // #10     at 0x54
    Utf8 "SourceFile"; // #11     at 0x66
    Utf8 "BadPermittedSubclassEntry.java"; // #12     at 0x73
    Utf8 "PermittedSubclasses"; // #13     at 0x89
    class #15; // #14     at 0x9D
    Utf8 "iDont;;Exist"; // #15     at 0xA0
    class #17; // #16     at 0xAA
    Utf8 "I/Dont/Exist/Either"; // #17     at 0xAD
  } // Constant Pool

  0x0020; // access [ ACC_SUPER ]
  #7;// this_cpx
  #2;// super_cpx

  [0] { // Interfaces
  } // Interfaces

  [0] { // fields
  } // fields

  [1] { // methods
    { // Member at 0xC1
      0x0000; // access
      #5; // name_cpx
      #6; // sig_cpx
      [1] { // Attributes
        Attr(#9, 29) { // Code at 0xC9
          1; // max_stack
          1; // max_locals
          Bytes[5]{
            0x2AB70001B1;
          }
          [0] { // Traps
          } // end Traps
          [1] { // Attributes
            Attr(#10, 6) { // LineNumberTable at 0xE0
              [1] { // LineNumberTable
                0  1; //  at 0xEC
              }
            } // end LineNumberTable
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
  } // methods

  [2] { // Attributes
    Attr(#13, 6) { // PermittedSubclasses at 0xF6
      0x0002000E0010;
    } // end PermittedSubclasses
    ;
    Attr(#11, 2) { // SourceFile at 0xEE
      #12;
    } // end SourceFile
  } // Attributes
}

// This class contains a PermittedSubclasses attribute with an empty class
// name.  Test that this causes a ClassFormatError exception to get thrown.
//
// sealed class EmptyPermittedSubclassEntry permits "", I/Dont/Exist/Either { }
//
class EmptyPermittedSubclassEntry {
  0xCAFEBABE;
  0; // minor version
  61; // version
  [18] { // Constant Pool
    ; // first element is empty
    Method #2 #3; // #1     at 0x0A
    class #4; // #2     at 0x0F
    NameAndType #5 #6; // #3     at 0x12
    Utf8 "java/lang/Object"; // #4     at 0x17
    Utf8 "<init>"; // #5     at 0x2A
    Utf8 "()V"; // #6     at 0x33
    class #8; // #7     at 0x39
    Utf8 "EmptyPermittedSubclassEntry"; // #8     at 0x3C
    Utf8 "Code"; // #9     at 0x4D
    Utf8 "LineNumberTable"; // #10     at 0x54
    Utf8 "SourceFile"; // #11     at 0x66
    Utf8 "EmptyPermittedSubclassEntry.java"; // #12     at 0x73
    Utf8 "PermittedSubclasses"; // #13     at 0x89
    class #15; // #14     at 0x9D
    Utf8 ""; // #15     at 0xA0
    class #17; // #16     at 0xAA
    Utf8 "I/Dont/Exist/Either"; // #17     at 0xAD
  } // Constant Pool

  0x0020; // access [ ACC_SUPER ]
  #7;// this_cpx
  #2;// super_cpx

  [0] { // Interfaces
  } // Interfaces

  [0] { // fields
  } // fields

  [1] { // methods
    { // Member at 0xC1
      0x0000; // access
      #5; // name_cpx
      #6; // sig_cpx
      [1] { // Attributes
        Attr(#9, 29) { // Code at 0xC9
          1; // max_stack
          1; // max_locals
          Bytes[5]{
            0x2AB70001B1;
          }
          [0] { // Traps
          } // end Traps
          [1] { // Attributes
            Attr(#10, 6) { // LineNumberTable at 0xE0
              [1] { // LineNumberTable
                0  1; //  at 0xEC
              }
            } // end LineNumberTable
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
  } // methods

  [2] { // Attributes
    Attr(#13, 6) { // PermittedSubclasses at 0xF6
      0x0002000E0010;
    } // end PermittedSubclasses
    ;
    Attr(#11, 2) { // SourceFile at 0xEE
      #12;
    } // end SourceFile
  } // Attributes
}