当前位置: 首页>>代码示例>>Java>>正文

Java LDC类代码示例

本文整理汇总了Java中org.apache.bcel.generic.LDC类的典型用法代码示例。如果您正苦于以下问题：Java LDC类的具体用法？Java LDC怎么用？Java LDC使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。


LDC类属于org.apache.bcel.generic包，在下文中一共展示了LDC类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: visitLDC

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
@Override
public void visitLDC(LDC ldc) {
    Taint taint = new Taint(Taint.State.SAFE);
    Object value = ldc.getValue(cpg);
    if (value instanceof String) {
        taint.setConstantValue((String) value);
    }
    if (FindSecBugsGlobalConfig.getInstance().isDebugTaintState()) {
        if (value instanceof String) {
            taint.setDebugInfo("\"" + value + "\"");
        } else {
            taint.setDebugInfo("LDC " + ldc.getType(cpg).getSignature());
        }
    }
    getFrame().pushValue(taint);
}
开发者ID:blackarbiter，项目名称:Android_Code_Arbiter，代码行数:17，代码来源:TaintFrameModelingVisitor.java

示例2: analyzeMethod

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
private void analyzeMethod(Method m, ClassContext classContext) throws CFGBuilderException, DataflowAnalysisException {

        ConstantPoolGen cpg = classContext.getConstantPoolGen();
        CFG cfg = classContext.getCFG(m);
        
        for (Iterator<Location> i = cfg.locationIterator(); i.hasNext(); ) {
            Location location = i.next();

            Instruction inst = location.getHandle().getInstruction();
            
            if (inst instanceof LDC) {
                LDC ldc = (LDC) inst;
                if (ldc != null) {
                    if("java.naming.security.authentication".equals(ldc.getValue(cpg)) &&
                       "none".equals(ByteCode.getConstantLDC(location.getHandle().getNext(), cpg, String.class))){
                        JavaClass clz = classContext.getJavaClass();
                        bugReporter.reportBug(new BugInstance(this, LDAP_ANONYMOUS, Priorities.LOW_PRIORITY) //
                        .addClass(clz)
                        .addMethod(clz, m)
                        .addSourceLine(classContext, m, location));
                        break;
                    }
                }
            }            
        }
    }
开发者ID:blackarbiter，项目名称:Android_Code_Arbiter，代码行数:27，代码来源:AnonymousLdapDetector.java

示例3: updateStringAppendState

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
private StringAppendState updateStringAppendState(Location location, ConstantPoolGen cpg, StringAppendState stringAppendState)
        {
    InstructionHandle handle = location.getHandle();
    Instruction ins = handle.getInstruction();
    if (!isConstantStringLoad(location, cpg)) {
        throw new IllegalArgumentException("instruction must be LDC");
    }

    LDC load = (LDC) ins;
    Object value = load.getValue(cpg);
    String stringValue = ((String) value).trim();
    if (stringValue.startsWith(",") || stringValue.endsWith(","))
        stringAppendState.setSawComma(handle);
    if (isCloseQuote(stringValue) && stringAppendState.getSawOpenQuote(handle))
        stringAppendState.setSawCloseQuote(handle);
    if (isOpenQuote(stringValue))
        stringAppendState.setSawOpenQuote(handle);

    return stringAppendState;
}
开发者ID:ytus，项目名称:findbugs-all-the-bugs，代码行数:21，代码来源:FindSqlInjection.java

示例4: isSafeValue

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
private boolean isSafeValue(Location location, ConstantPoolGen cpg) throws CFGBuilderException {
    Instruction prevIns = location.getHandle().getInstruction();
    if (prevIns instanceof LDC || prevIns instanceof GETSTATIC)
        return true;
    if (prevIns instanceof InvokeInstruction) {
        String methodName = ((InvokeInstruction) prevIns).getMethodName(cpg);
        if (methodName.startsWith("to") && methodName.endsWith("String") && methodName.length() > 8)
            return true;
    }
    if (prevIns instanceof AALOAD) {
        CFG cfg = classContext.getCFG(method);

        Location prev = getPreviousLocation(cfg, location, true);
        if (prev != null) {
            Location prev2 = getPreviousLocation(cfg, prev, true);
            if (prev2 != null && prev2.getHandle().getInstruction() instanceof GETSTATIC) {
                GETSTATIC getStatic = (GETSTATIC) prev2.getHandle().getInstruction();
                if (getStatic.getSignature(cpg).equals("[Ljava/lang/String;"))
                    return true;
            }
        }
    }
    return false;
}
开发者ID:ytus，项目名称:findbugs-all-the-bugs，代码行数:25，代码来源:FindSqlInjection.java

示例5: visitLDC

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
@Override
public void visitLDC(LDC obj) {
    Object constantValue = obj.getValue(cpg);
    ValueNumber value;
    if (constantValue instanceof ConstantClass) {
        ConstantClass constantClass = (ConstantClass) constantValue;
        String className = constantClass.getBytes(cpg.getConstantPool());
        value = factory.getClassObjectValue(className);
    } else {
        value = constantValueMap.get(constantValue);
        if (value == null) {
            value = factory.createFreshValue(ValueNumber.CONSTANT_VALUE);
            constantValueMap.put(constantValue, value);

            // Keep track of String constants

            if (constantValue instanceof String) {
                stringConstantMap.put(value, (String) constantValue);
            }
        }
    }
    getFrame().pushValue(value);
}
开发者ID:ytus，项目名称:findbugs-all-the-bugs，代码行数:24，代码来源:ValueNumberFrameModelingVisitor.java

示例6: isPEI

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
/**
 * Return whether or not the given instruction can throw exceptions.
 *
 * @param handle
 *            the instruction
 * @return true if the instruction can throw an exception, false otherwise
 */
private boolean isPEI(InstructionHandle handle) {
    Instruction ins = handle.getInstruction();

    if (!(ins instanceof ExceptionThrower))
        return false;

    if (ins instanceof NEW)
        return false;
    // if (ins instanceof ATHROW) return false;
    if (ins instanceof GETSTATIC)
        return false;
    if (ins instanceof PUTSTATIC)
        return false;
    if (ins instanceof ReturnInstruction)
        return false;
    if (ins instanceof INSTANCEOF)
        return false;
    if (ins instanceof MONITOREXIT)
        return false;
    if (ins instanceof LDC)
        return false;
    return true;

}
开发者ID:ytus，项目名称:findbugs-all-the-bugs，代码行数:32，代码来源:BetterCFGBuilder2.java

示例7: visitLDC

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
/** Checks if the constraints of operands of the said instruction(s) are satisfied. */
// LDC and LDC_W (LDC_W is a subclass of LDC in BCEL's model)
public void visitLDC(LDC o){
	indexValid(o, o.getIndex());
	Constant c = cpg.getConstant(o.getIndex());
	if (c instanceof ConstantClass){
	  addMessage("Operand of LDC or LDC_W is CONSTANT_Class '"+c+"' - this is only supported in JDK 1.5 and higher.");
	}
	else{
	  if (! ( (c instanceof ConstantInteger)	||
	          (c instanceof ConstantFloat) 		||
              (c instanceof ConstantString) ) ){
          constraintViolated(o, "Operand of LDC or LDC_W must be one of CONSTANT_Integer, CONSTANT_Float or CONSTANT_String, but is '"+c+"'.");
	  }
	}
}
开发者ID:Hu6，项目名称:VestaClient，代码行数:17，代码来源:Pass3aVerifier.java

示例8: genCreate

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
/**
 * <<GET_IMODEL(THIS)>> 
 * LDC className
    * INVOKEINTERFACE createObject
 */
@Override
public void genCreate(Create c, GenScope scope) {
	InstructionList il       = scope.getInstructionList();
	InstructionFactory ifact = scope.getInstructionFactory();
	ConstantPoolGen cpg      = scope.getConstantPool();
	
	// generate model access
	scope.generateGetModel(modelName);
	// CommonGen.generateGetModel(modelName, il, ifact, scope.getTransformationContext() );

	// push className
	il.append(new LDC(cpg.addString(c.getClassName())));
		
	// invoke
	il.append(ifact.createInvoke(DefaultTypes.IModel.getClassName(),
				"createObject", Type.OBJECT, 
				new Type[] { Type.STRING },
				DefaultTypes.IModelCall));
	
}
开发者ID:jesusc，项目名称:eclectic，代码行数:26，代码来源:RegularModelStrategy.java

示例9: analyzeMethod

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
private void analyzeMethod(Method m, ClassContext classContext) throws CFGBuilderException{
    JavaClass clazz = classContext.getJavaClass();
    ConstantPoolGen cpg = classContext.getConstantPoolGen();
    CFG cfg = classContext.getCFG(m);

    for (Iterator<Location> i = cfg.locationIterator(); i.hasNext(); ) {
        Location loc = i.next();
        Instruction inst = loc.getHandle().getInstruction();

        if (inst instanceof INVOKEVIRTUAL) {
            INVOKEVIRTUAL invoke = (INVOKEVIRTUAL)inst;
            if( "java.lang.StringBuilder".equals(invoke.getClassName(cpg)) && "append".equals(invoke.getMethodName(cpg))) {
                Instruction prev = loc.getHandle().getPrev().getInstruction();

                if (prev instanceof LDC) {
                    LDC ldc = (LDC)prev;
                    Object value = ldc.getValue(cpg);

                    if (value instanceof String) {
                        String v = (String)value;

                        if ("redirect:".equals(v)) {
                            BugInstance bug = new BugInstance(this, SPRING_UNVALIDATED_REDIRECT_TYPE, Priorities.NORMAL_PRIORITY);
                            bug.addClass(clazz).addMethod(clazz,m).addSourceLine(classContext,m,loc);
                            reporter.reportBug(bug);
                        }
                    }
                }
            }
        }
    }
}
开发者ID:blackarbiter，项目名称:Android_Code_Arbiter，代码行数:33，代码来源:SpringUnvalidatedRedirectDetector.java

示例10: analyzeMethod

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
private void analyzeMethod(Method m, ClassContext classContext) throws CFGBuilderException, DataflowAnalysisException {

        ConstantPoolGen cpg = classContext.getConstantPoolGen();
        CFG cfg = classContext.getCFG(m);
        
        for (Iterator<Location> i = cfg.locationIterator(); i.hasNext(); ) {
            Location location = i.next();

            Instruction inst = location.getHandle().getInstruction();

            if (inst instanceof INVOKEINTERFACE) {
                INVOKEINTERFACE invoke = (INVOKEINTERFACE) inst;
                String methodName = invoke.getMethodName(cpg);
                String className = invoke.getClassName(cpg);

                if (className.equals("javax.servlet.http.HttpServletResponse") &&
                   (methodName.equals("addHeader") || methodName.equals("setHeader"))) {

                    LDC ldc = ByteCode.getPrevInstruction(location.getHandle().getPrev(), LDC.class);
                    if (ldc != null) {
                        String headerValue = ByteCode.getConstantLDC(location.getHandle().getPrev(), cpg, String.class);
                        if ("Access-Control-Allow-Origin".equalsIgnoreCase((String)ldc.getValue(cpg)) &&
                            (headerValue.contains("*") || "null".equalsIgnoreCase(headerValue))) {

                            JavaClass clz = classContext.getJavaClass();
                            bugReporter.reportBug(new BugInstance(this, PERMISSIVE_CORS, Priorities.HIGH_PRIORITY)
                            .addClass(clz)
                            .addMethod(clz, m)
                            .addSourceLine(classContext, m, location));
                        }
                    }
                }
            }
        }         
        
    }
开发者ID:blackarbiter，项目名称:Android_Code_Arbiter，代码行数:37，代码来源:PermissiveCORSDetector.java

示例11: generateReadCode

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
void generateReadCode(InstructionList il, InstructionFactory factory, ConstantPoolGen cp)
{
   il.append(new LDC(cp.addString(name)));
   il.append(factory.createInvoke("org.dianahep.root4j.core.RootInput", "readObject", rootObjectType, new Type[]
         {
            Type.STRING
         }, INVOKEINTERFACE));
   il.append(factory.createCast(rootObjectType, getJavaType()));
}
开发者ID:diana-hep，项目名称:root4j，代码行数:10，代码来源:GenericRootClass.java

示例12: visitLDC

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
@Override
public void visitLDC(LDC obj) {
    Type type = obj.getType(getCPG());
    if (isString(type)) {
        Object value = obj.getValue(getCPG());
        if (value instanceof String && ((String)value).length() == 0)
            pushValue( emptyStringTypeInstance);
        else pushValue( staticStringTypeInstance);
    }
    else pushValue(type);
}
开发者ID:ytus，项目名称:findbugs-all-the-bugs，代码行数:12，代码来源:FindRefComparison.java

示例13: isConstantStringLoad

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
private boolean isConstantStringLoad(Location location, ConstantPoolGen cpg)  {
    Instruction ins = location.getHandle().getInstruction();
    if (ins instanceof LDC) {
        LDC load = (LDC) ins;
        Object value = load.getValue(cpg);
        if (value instanceof String) {
            return true;
        }
    }

    return false;
}
开发者ID:ytus，项目名称:findbugs-all-the-bugs，代码行数:13，代码来源:FindSqlInjection.java

示例14: registerInstructionSources

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
private void registerInstructionSources() throws DataflowAnalysisException {
    for (Iterator<Location> i = cfg.locationIterator(); i.hasNext();) {
        Location location = i.next();
        Instruction instruction = location.getHandle().getInstruction();
        short opcode = instruction.getOpcode();

        int produces = instruction.produceStack(cpg);
        if (instruction instanceof InvokeInstruction) {
            // Model return value
            registerReturnValueSource(location);
        } else if (opcode == Constants.GETFIELD || opcode == Constants.GETSTATIC) {
            // Model field loads
            registerFieldLoadSource(location);
        } else if (instruction instanceof LDC) {
            // Model constant values
            registerLDCValueSource(location);
        } else if (instruction instanceof LDC2_W) {
            // Model constant values
            registerLDC2ValueSource(location);
        } else if (instruction instanceof ConstantPushInstruction) {
            // Model constant values
            registerConstantPushSource(location);
        } else if (instruction instanceof ACONST_NULL) {
            // Model constant values
            registerPushNullSource(location);
        } else  if ((produces == 1 || produces == 2) && !(instruction instanceof LocalVariableInstruction) && !(instruction instanceof CHECKCAST)){
            // Model other sources
            registerOtherSource(location);
        }
    }
}
开发者ID:ytus，项目名称:findbugs-all-the-bugs，代码行数:32，代码来源:ForwardTypeQualifierDataflowAnalysis.java

示例15: generateGetModel

import org.apache.bcel.generic.LDC; //导入依赖的package包/类
public void generateGetModel(String modelName, InstructionList il, InstructionFactory ifact, GenScope scope) {
	generateGetModelManager(il, ifact, scope.getTransformationContext(), scope);

	il.append( new LDC(ifact.getConstantPool().addString(modelName)) );
	il.append(ifact.createInvoke(DefaultTypes.ModelManager.getClassName(),
			"getNamespace", DefaultTypes.IModel, 
			new Type[] { Type.STRING },
			Constants.INVOKEVIRTUAL));
}
开发者ID:jesusc，项目名称:eclectic，代码行数:10，代码来源:CommonGen.java


注：本文中的org.apache.bcel.generic.LDC类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。