insert code failed: java.lang.VerifyError

[tangyouyi1513]

## insert following code before a method: try {com.baidu.openrasp.ModuleLoader.loadClass("com.baidu.openrasp.HookHandler").getMethod("onInputStreamRead",new Class[]{java.lang.int.class,Object.class}).invoke(null,new Object[]{$_,$0});} catch (Exception e) {if(e.getClass().getName().equals("com.baidu.openrasp.exception.SecurityException")){throw e;}}

## The following error occurred at runtime： java.lang.VerifyError: Bad type on operand stack Exception Details: Location: org/apache/catalina/connector/InputBuffer.readByte()I @70: aastore Reason: Type integer (current frame, stack[5]) is not assignable to 'java/lang/Object' Current Frame: bci: @70 flags: { } locals: { 'org/apache/catalina/connector/InputBuffer', top, integer } stack: { 'java/lang/reflect/Method', null, '[Ljava/lang/Object;', '[Ljava/lang/Object;', integer, integer } Bytecode: 0x0000000: 2ab4 0008 9900 13bb 0028 59b2 0029 122a 0x0000010: b600 2bb7 002c bf2a b400 11b6 002d a700 0x0000020: 033d 1301 49b8 014f 1301 5105 bd01 5359 0x0000030: 03b2 0159 5359 0413 015b 53b6 015f 0105 0x0000040: bd01 5b59 031c 5359 042a 53b6 0165 57a7 0x0000050: 0019 4e2d b601 6bb6 016e 1301 70b6 0176 0x0000060: 9900 052d bfa7 0003 1cac
Exception Handler Table: bci [34, 79] => handler: 82 Stackmap Table: same_frame(@23) same_locals_1_stack_item_frame(@33,Integer) full_frame(@82,{Object[#80],Top,Integer},{Object[#359]}) append_frame(@101,Object[#359]) chop_frame(@104,1)

at org.apache.catalina.connector.Request.<init>(Request.java:252)
at org.apache.catalina.connector.Connector.createRequest(Connector.java:882)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:416)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)

[tangyouyi1513]

It looks like wrapper class error，how to fix it

[chibash]

$_ is available only with insertAfter(). Maybe that's a problem.

[tangyouyi1513]

I really use the insertAfter() method. I have fixed it wither $_
Javassist can not automatically convet the primitive type to wrapper type.

[Venscor]

I also got this problem, @chibash @tangyouyi1513 how to solve this

[mr3]

You guys can try with ($w)$_.

$w represents a wrapper type. It must be used as the cast type in a cast expression. ($w) converts from a primitive type to the corresponding wrapper type.

Surely autoboxing is better.

[Venscor]

You guys can try with ($w)$_.

$w represents a wrapper type. It must be used as the cast type in a cast expression. ($w) converts from a primitive type to the corresponding wrapper type.

Surely autoboxing is better.

yes, I also solve it by using $w, but i think autoboxing support is a batter way.