-
IpUtils
-
<init>(): void
-
intAbs(short): int
-
checksum(ByteBuffer, int, int, int): int
-
pseudoChecksumIPv4(ByteBuffer, int, int, int): int
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pseudoChecksumIPv6(ByteBuffer, int, int, int): int
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ipversion(ByteBuffer, int): byte
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ipChecksum(ByteBuffer, int): short
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transportChecksum(ByteBuffer, int, int, int, int): short
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udpChecksum(ByteBuffer, int, int): short
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tcpChecksum(ByteBuffer, int, int, int): short
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addressAndPortToString(InetAddress, int): String
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isValidUdpOrTcpPort(int): boolean
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public class android.net.util.IpUtils
minor version: 0
major version: 59
flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
this_class: android.net.util.IpUtils
super_class: java.lang.Object
{
public void <init>();
descriptor: ()V
flags: (0x0001) ACC_PUBLIC
Code:
stack=1, locals=1, args_size=1
start local 0 // android.net.util.IpUtils this
0: .line 32
aload 0 /* this */
invokespecial java.lang.Object.<init>:()V
return
end local 0 // android.net.util.IpUtils this
LocalVariableTable:
Start End Slot Name Signature
0 1 0 this Landroid/net/util/IpUtils;
private static int intAbs(short);
descriptor: (S)I
flags: (0x000a) ACC_PRIVATE, ACC_STATIC
Code:
stack=2, locals=1, args_size=1
start local 0 // short v
0: .line 38
iload 0 /* v */
ldc 65535
iand
ireturn
end local 0 // short v
LocalVariableTable:
Start End Slot Name Signature
0 1 0 v S
MethodParameters:
Name Flags
v
private static int checksum(java.nio.ByteBuffer, int, int, int);
descriptor: (Ljava/nio/ByteBuffer;III)I
flags: (0x000a) ACC_PRIVATE, ACC_STATIC
Code:
stack=3, locals=9, args_size=4
start local 0 // java.nio.ByteBuffer buf
start local 1 // int seed
start local 2 // int start
start local 3 // int end
0: .line 47
iload 1 /* seed */
istore 4 /* sum */
start local 4 // int sum
1: .line 48
aload 0 /* buf */
invokevirtual java.nio.ByteBuffer.position:()I
istore 5 /* bufPosition */
start local 5 // int bufPosition
2: .line 52
aload 0 /* buf */
iload 2 /* start */
invokevirtual java.nio.ByteBuffer.position:(I)Ljava/nio/Buffer;
pop
3: .line 53
aload 0 /* buf */
invokevirtual java.nio.ByteBuffer.asShortBuffer:()Ljava/nio/ShortBuffer;
astore 6 /* shortBuf */
start local 6 // java.nio.ShortBuffer shortBuf
4: .line 56
aload 0 /* buf */
iload 5 /* bufPosition */
invokevirtual java.nio.ByteBuffer.position:(I)Ljava/nio/Buffer;
pop
5: .line 58
iload 3 /* end */
iload 2 /* start */
isub
iconst_2
idiv
istore 7 /* numShorts */
start local 7 // int numShorts
6: .line 59
iconst_0
istore 8 /* i */
start local 8 // int i
7: goto 10
8: .line 60
StackMap locals: java.nio.ByteBuffer int int int int int java.nio.ShortBuffer int int
StackMap stack:
iload 4 /* sum */
aload 6 /* shortBuf */
iload 8 /* i */
invokevirtual java.nio.ShortBuffer.get:(I)S
invokestatic android.net.util.IpUtils.intAbs:(S)I
iadd
istore 4 /* sum */
9: .line 59
iinc 8 /* i */ 1
StackMap locals:
StackMap stack:
10: iload 8 /* i */
iload 7 /* numShorts */
if_icmplt 8
end local 8 // int i
11: .line 62
iload 2 /* start */
iload 7 /* numShorts */
iconst_2
imul
iadd
istore 2 /* start */
12: .line 65
iload 3 /* end */
iload 2 /* start */
if_icmpeq 17
13: .line 66
aload 0 /* buf */
iload 2 /* start */
invokevirtual java.nio.ByteBuffer.get:(I)B
istore 8 /* b */
start local 8 // short b
14: .line 69
iload 8 /* b */
ifge 16
15: .line 70
iload 8 /* b */
sipush 256
iadd
i2s
istore 8 /* b */
16: .line 73
StackMap locals: java.nio.ByteBuffer int int int int int java.nio.ShortBuffer int int
StackMap stack:
iload 4 /* sum */
iload 8 /* b */
sipush 256
imul
iadd
istore 4 /* sum */
end local 8 // short b
17: .line 76
StackMap locals:
StackMap stack:
iload 4 /* sum */
bipush 16
ishr
ldc 65535
iand
iload 4 /* sum */
ldc 65535
iand
iadd
istore 4 /* sum */
18: .line 77
iload 4 /* sum */
iload 4 /* sum */
bipush 16
ishr
ldc 65535
iand
iadd
ldc 65535
iand
istore 4 /* sum */
19: .line 78
iload 4 /* sum */
iconst_m1
ixor
istore 8 /* negated */
start local 8 // int negated
20: .line 79
iload 8 /* negated */
i2s
invokestatic android.net.util.IpUtils.intAbs:(S)I
ireturn
end local 8 // int negated
end local 7 // int numShorts
end local 6 // java.nio.ShortBuffer shortBuf
end local 5 // int bufPosition
end local 4 // int sum
end local 3 // int end
end local 2 // int start
end local 1 // int seed
end local 0 // java.nio.ByteBuffer buf
LocalVariableTable:
Start End Slot Name Signature
0 21 0 buf Ljava/nio/ByteBuffer;
0 21 1 seed I
0 21 2 start I
0 21 3 end I
1 21 4 sum I
2 21 5 bufPosition I
4 21 6 shortBuf Ljava/nio/ShortBuffer;
6 21 7 numShorts I
7 11 8 i I
14 17 8 b S
20 21 8 negated I
MethodParameters:
Name Flags
buf
seed
start
end
private static int pseudoChecksumIPv4(java.nio.ByteBuffer, int, int, int);
descriptor: (Ljava/nio/ByteBuffer;III)I
flags: (0x000a) ACC_PRIVATE, ACC_STATIC
Code:
stack=4, locals=5, args_size=4
start local 0 // java.nio.ByteBuffer buf
start local 1 // int headerOffset
start local 2 // int protocol
start local 3 // int transportLen
0: .line 84
iload 2 /* protocol */
iload 3 /* transportLen */
iadd
istore 4 /* partial */
start local 4 // int partial
1: .line 85
iload 4 /* partial */
aload 0 /* buf */
iload 1 /* headerOffset */
bipush 12
iadd
invokevirtual java.nio.ByteBuffer.getShort:(I)S
invokestatic android.net.util.IpUtils.intAbs:(S)I
iadd
istore 4 /* partial */
2: .line 86
iload 4 /* partial */
aload 0 /* buf */
iload 1 /* headerOffset */
bipush 14
iadd
invokevirtual java.nio.ByteBuffer.getShort:(I)S
invokestatic android.net.util.IpUtils.intAbs:(S)I
iadd
istore 4 /* partial */
3: .line 87
iload 4 /* partial */
aload 0 /* buf */
iload 1 /* headerOffset */
bipush 16
iadd
invokevirtual java.nio.ByteBuffer.getShort:(I)S
invokestatic android.net.util.IpUtils.intAbs:(S)I
iadd
istore 4 /* partial */
4: .line 88
iload 4 /* partial */
aload 0 /* buf */
iload 1 /* headerOffset */
bipush 18
iadd
invokevirtual java.nio.ByteBuffer.getShort:(I)S
invokestatic android.net.util.IpUtils.intAbs:(S)I
iadd
istore 4 /* partial */
5: .line 89
iload 4 /* partial */
ireturn
end local 4 // int partial
end local 3 // int transportLen
end local 2 // int protocol
end local 1 // int headerOffset
end local 0 // java.nio.ByteBuffer buf
LocalVariableTable:
Start End Slot Name Signature
0 6 0 buf Ljava/nio/ByteBuffer;
0 6 1 headerOffset I
0 6 2 protocol I
0 6 3 transportLen I
1 6 4 partial I
MethodParameters:
Name Flags
buf
headerOffset
protocol
transportLen
private static int pseudoChecksumIPv6(java.nio.ByteBuffer, int, int, int);
descriptor: (Ljava/nio/ByteBuffer;III)I
flags: (0x000a) ACC_PRIVATE, ACC_STATIC
Code:
stack=4, locals=6, args_size=4
start local 0 // java.nio.ByteBuffer buf
start local 1 // int headerOffset
start local 2 // int protocol
start local 3 // int transportLen
0: .line 94
iload 2 /* protocol */
iload 3 /* transportLen */
iadd
istore 4 /* partial */
start local 4 // int partial
1: .line 95
bipush 8
istore 5 /* offset */
start local 5 // int offset
2: goto 5
3: .line 96
StackMap locals: int int
StackMap stack:
iload 4 /* partial */
aload 0 /* buf */
iload 1 /* headerOffset */
iload 5 /* offset */
iadd
invokevirtual java.nio.ByteBuffer.getShort:(I)S
invokestatic android.net.util.IpUtils.intAbs:(S)I
iadd
istore 4 /* partial */
4: .line 95
iinc 5 /* offset */ 2
StackMap locals:
StackMap stack:
5: iload 5 /* offset */
bipush 40
if_icmplt 3
end local 5 // int offset
6: .line 98
iload 4 /* partial */
ireturn
end local 4 // int partial
end local 3 // int transportLen
end local 2 // int protocol
end local 1 // int headerOffset
end local 0 // java.nio.ByteBuffer buf
LocalVariableTable:
Start End Slot Name Signature
0 7 0 buf Ljava/nio/ByteBuffer;
0 7 1 headerOffset I
0 7 2 protocol I
0 7 3 transportLen I
1 7 4 partial I
2 6 5 offset I
MethodParameters:
Name Flags
buf
headerOffset
protocol
transportLen
private static byte ipversion(java.nio.ByteBuffer, int);
descriptor: (Ljava/nio/ByteBuffer;I)B
flags: (0x000a) ACC_PRIVATE, ACC_STATIC
Code:
stack=2, locals=2, args_size=2
start local 0 // java.nio.ByteBuffer buf
start local 1 // int headerOffset
0: .line 102
aload 0 /* buf */
iload 1 /* headerOffset */
invokevirtual java.nio.ByteBuffer.get:(I)B
bipush -16
iand
iconst_4
ishr
i2b
ireturn
end local 1 // int headerOffset
end local 0 // java.nio.ByteBuffer buf
LocalVariableTable:
Start End Slot Name Signature
0 1 0 buf Ljava/nio/ByteBuffer;
0 1 1 headerOffset I
MethodParameters:
Name Flags
buf
headerOffset
public static short ipChecksum(java.nio.ByteBuffer, int);
descriptor: (Ljava/nio/ByteBuffer;I)S
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=6, locals=3, args_size=2
start local 0 // java.nio.ByteBuffer buf
start local 1 // int headerOffset
0: .line 106
aload 0 /* buf */
iload 1 /* headerOffset */
invokevirtual java.nio.ByteBuffer.get:(I)B
bipush 15
iand
i2b
istore 2 /* ihl */
start local 2 // byte ihl
1: .line 107
aload 0 /* buf */
iconst_0
iload 1 /* headerOffset */
iload 1 /* headerOffset */
iload 2 /* ihl */
iconst_4
imul
iadd
invokestatic android.net.util.IpUtils.checksum:(Ljava/nio/ByteBuffer;III)I
i2s
ireturn
end local 2 // byte ihl
end local 1 // int headerOffset
end local 0 // java.nio.ByteBuffer buf
LocalVariableTable:
Start End Slot Name Signature
0 2 0 buf Ljava/nio/ByteBuffer;
0 2 1 headerOffset I
1 2 2 ihl B
MethodParameters:
Name Flags
buf
headerOffset
private static short transportChecksum(java.nio.ByteBuffer, int, int, int, int);
descriptor: (Ljava/nio/ByteBuffer;IIII)S
flags: (0x000a) ACC_PRIVATE, ACC_STATIC
Code:
stack=3, locals=5, args_size=5
0: .line 126
new java.lang.Error
dup
ldc "Unresolved compilation problem: \n\tIPPROTO_UDP cannot be resolved to a variable\n"
invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
athrow
LocalVariableTable:
Start End Slot Name Signature
MethodParameters:
Name Flags
buf
protocol
ipOffset
transportOffset
transportLen
public static short udpChecksum(java.nio.ByteBuffer, int, int);
descriptor: (Ljava/nio/ByteBuffer;II)S
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=3, locals=3, args_size=3
0: .line 134
new java.lang.Error
dup
ldc "Unresolved compilation problem: \n\tIPPROTO_UDP cannot be resolved to a variable\n"
invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
athrow
LocalVariableTable:
Start End Slot Name Signature
MethodParameters:
Name Flags
buf
ipOffset
transportOffset
public static short tcpChecksum(java.nio.ByteBuffer, int, int, int);
descriptor: (Ljava/nio/ByteBuffer;III)S
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=3, locals=4, args_size=4
0: .line 139
new java.lang.Error
dup
ldc "Unresolved compilation problem: \n\tIPPROTO_TCP cannot be resolved to a variable\n"
invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
athrow
LocalVariableTable:
Start End Slot Name Signature
MethodParameters:
Name Flags
buf
ipOffset
transportOffset
transportLen
public static java.lang.String addressAndPortToString(java.net.InetAddress, int);
descriptor: (Ljava/net/InetAddress;I)Ljava/lang/String;
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=5, locals=2, args_size=2
start local 0 // java.net.InetAddress address
start local 1 // int port
0: .line 144
aload 0 /* address */
instanceof java.net.Inet6Address
ifeq 1
ldc "[%s]:%d"
goto 2
StackMap locals:
StackMap stack:
1: ldc "%s:%d"
StackMap locals:
StackMap stack: java.lang.String
2: iconst_2
anewarray java.lang.Object
dup
iconst_0
3: .line 145
aload 0 /* address */
invokevirtual java.net.InetAddress.getHostAddress:()Ljava/lang/String;
aastore
dup
iconst_1
iload 1 /* port */
invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
aastore
4: .line 143
invokestatic java.lang.String.format:(Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
areturn
end local 1 // int port
end local 0 // java.net.InetAddress address
LocalVariableTable:
Start End Slot Name Signature
0 5 0 address Ljava/net/InetAddress;
0 5 1 port I
MethodParameters:
Name Flags
address
port
public static boolean isValidUdpOrTcpPort(int);
descriptor: (I)Z
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=1, args_size=1
start local 0 // int port
0: .line 149
iload 0 /* port */
ifle 1
iload 0 /* port */
ldc 65536
if_icmpge 1
iconst_1
ireturn
StackMap locals:
StackMap stack:
1: iconst_0
ireturn
end local 0 // int port
LocalVariableTable:
Start End Slot Name Signature
0 2 0 port I
MethodParameters:
Name Flags
port
}
SourceFile: "IpUtils.java"