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Homephp教程PHP源码PHP静态分析与跨站脚本检测

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 最近在看PHP静态分析与跨站脚本检测的东西,用的是维也纳大学一个博士生做出来的Pixy,这个东西是开源的,而且也作了好几年了,功能逐渐增强。现在这个3.0.3版本里边有225个程序,Checker是主程序,现在所有结果都是显示在命令行的,如果被检测程序大,结果很多,当然是个问题。而我要做的大概是将其显示到GUI中去,并且改进它本身呈鼓里边一些不足的地方。
从寒假就开始看他的程序,寒假里边没有怎么搞明白,又冷,手生冻疮了。回来以后,从头开始看吧,分析那一部分不是很明白,但是看到后来,检测漏洞的时候,我想暂时不管它存储的结构什么,反正都是Node之类的东西,看他是怎么检测的,有的细节地方那个暂时翻过去,结果感觉比前边analysze部分简单得多了,连那些存储结构什么的都明白些了。
当然也看他的论文,论文换了一个寒假看完,没弄明白,像Cfg这些东西在论文中有,但是显示不出来,没有直观的感觉,不爽。所以这两天忙着弄了个GUI界面来显示这个Cfg控制流图,麻烦了一点,不过总算是出来了,看看好像也没有多大问题,献丑在这里了。另外,本来是自己使用的,有的地方考虑不周也无所谓,自己再调调就行了。
共有3个文件,第一个是Coor.java,保存每个节点的坐标以及其子节点坐标:


package at.ac.tuwien.infosys.www.pixy;

import java.util.*;
public class Coor 
{
    
private int x;
    
private int y;
    
private ListCoor> coors;
    
public Coor(int x, int y)
    
{
        
this.coors = new LinkedListCoor>();
        
this.x = x;
        
this.y = y;
    }

    
public int getX()
    
{
        
return this.x;
    }

    
public int getY()
    
{
        
return this.y;
    }

    
public ListCoor> getCoors()
    
{
        
return this.coors;
    }

    
public void addCoor(Coor coor)
    
{
        
this.coors.add(coor);
    }

    
public boolean equals(Coor coor)
    
{
        
if (coor.getX()==this.x && coor.getY()==y)
        
{
            
return true;
        }

        
return false;
    }

    
public boolean contains(Coor c)
    
{
        
for (Coor coor : this.coors)
        
{
            
if (coor.getX()==c.getX() && coor.getY()==c.getY())
            
{
                
return true;
            }

        }

        
return false;
    }

}



第二个是DrawPanel.java,负责画图的组件:


package at.ac.tuwien.infosys.www.pixy;
import at.ac.tuwien.infosys.www.pixy.conversion.Cfg;
import at.ac.tuwien.infosys.www.pixy.conversion.nodes.*;

import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
/**
 *
 * 
@author Administrator
 
*/

public class DrawPanel extends JPanel
{
    
private java.util.ListCfgNode> cfgList;
    
private java.util.ListCoor> coorList;
    
    
/** Creates a new instance of OvalJPanel */
    
public DrawPanel(java.util.ListCfgNode> cfgList, java.util.ListCoor> coorList) 
    
{
        
this.cfgList = cfgList;
        
this.coorList = coorList;
    }

    
//在面板上绘制图形
    public void paintComponent(Graphics g)
    
{
        
        
        
for (int i=0 ;ithis.cfgList.size() ;i++ )
        
{
            CfgNode cfgNode 
= this.cfgList.get(i);
            Coor coor 
= this.coorList.get(i);
            
int x = coor.getX();
            
int y = coor.getY();
            g.setColor(Color.red);
            g.drawOval(x
-50, y-1510030);
            g.setColor(Color.blue);
            g.drawString(cfgNode.toString(), x
-30, y-5);
            g.drawString(
"Loc :" + String.valueOf(cfgNode.getOrigLineno()), x, y+10);
            java.util.List
Coor> coors = coor.getCoors();
            
for (Coor c : coors)
            
{
                
int cx = c.getX();
                
int cy = c.getY();
                g.setColor(Color.black);
                
if (c.equals(coor))
                
{
                    g.setColor(Color.yellow);
                }

                g.drawLine(x, y
+15, cx, cy-15);
                
            }

        }

    }

}




第三个是Draw.java,主控制组件,只需要在Checker中调用该类,传以适当参数(Cfg),就可以了。


package at.ac.tuwien.infosys.www.pixy;
import at.ac.tuwien.infosys.www.pixy.conversion.Cfg;
import at.ac.tuwien.infosys.www.pixy.conversion.nodes.*;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
/**
 *
 * 
@author Administrator
 
*/

public class Draw {
    
    
//声明框架
    private JFrame frame = new JFrame("Control Flow Graph");
    
//声明书签面板
    private DrawPanel draw;
    
private Cfg cfg;
    
private MapCfgNode, Coor> map;
    
private java.util.ListCfgNode> cfgList;
    
private java.util.ListCoor> coorList;
    
private int startX = 50;
    
private int startY = 30;

    
/** Creates a new instance of TabbedJFrame */
    
public Draw(Cfg cfg) {
        
//this.map = new TreeMap();
        this.cfgList = new LinkedListCfgNode>();
        
this.coorList = new LinkedListCoor>();
        
this.cfg = cfg;
    }

    
public void show()
    
{
        frame.add(
new JScrollPane(new DrawPanel(this.cfgList, this.coorList)), BorderLayout.CENTER);
        frame.setSize(
10001000);
        frame.setLocation(
5050);
        frame.setVisible(
true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    
/**
     * 将Cfg转换为cfgList和coorList.
     
*/

    
public void convert()
    
{
        CfgNode node 
= this.cfg.getHead();
        
int size = this.cfg.size();
        Coor coor 
= new Coor(startX, startY);

        
this.cfgList.add(node);
        
this.coorList.add(coor);
        System.out.println(size);
        java.util.List
CfgNode> noded = new LinkedListCfgNode>();
        
        
for (int i=0 ;isize ;i++ )
        
{
            
int n = i;
            
if (noded.contains(node))
            
{
                n 
= -1;
                
for (CfgNode cfgNode : this.cfgList )
                
{
                    n
++;
                    
if (noded.contains(cfgNode))
                    
{
                        
continue;
                    }

                    node 
= cfgNode;
                    
break;
                }

            }


            noded.add(node);
//为了上边的if判断好做,故在此向noded中添加
            java.util.ListCfgNode> list = node.getSuccessors();
            
int len = list.size();
            
if (len == 0)
            
{
                
continue;
            }


            
int k = 0;
            
            coor 
= this.coorList.get(this.cfgList.indexOf(node));
            startY 
= coor.getY() + 60;
            
for (CfgNode cfgNode : list)
            
{
                startX 
= coor.getX() + k*250;
                k
++;
                
if (this.cfgList.contains(cfgNode))
                
{
                    Coor c 
= (Coor)this.coorList.get(this.cfgList.indexOf(cfgNode));
                    
if (!coor.contains(c))
                    
{
                        coor.addCoor(c);
                    }

                    
continue;
                }

                coor.addCoor(
new Coor(startX, startY));
                
this.cfgList.add(cfgNode);
                
this.coorList.add(new Coor(startX, startY));
            }

            node 
= list.get(0);//这里取到的CfgNode可能已经分析过了,通过上边的if判断可以从cfgList中另外取一个。
        }

    }

    
public void setStartX(int x)
    
{
        
this.startX = x;
    }

    
public void setStartY(int y)
    
{
        
this.startY = y;
    }

    
public int getStartX()
    
{
        
return this.startX;
    }

    
public int getStartY()
    
{
        
return this.startY;
    }

    
public void dump()
    
{
        System.out.println(
"------------------");
        
for (int i=0 ; ithis.cfgList.size(); i++)
        
{
            CfgNode cfgNode 
= this.cfgList.get(i);
            Coor coor 
= this.coorList.get(i);
            System.out.println(cfgNode.toString() 
+ "  "/* + cfgNode.toString()*/ +"  " + coor.getX() + " " + coor.getY() + "  " + coor.getCoors().size());
        }

        System.out.println(
"------------------");
    }

    
    
public void dumpMap()
    
{
        java.util.List
CfgNode> list = this.cfg.dfPreOrder();
        System.out.println(
"******************");
        
for (CfgNode node : list)
        
{
            System.out.println(
"    " + node.toString() + " " + node.getSuccessors().size());
        }

        System.out.println(
"******************");
    }

    
public static void main(String [] args)
    
{
    
//    new Draw();
    }

    
}


可能这个项目还会做很久,中间会不会有些心得继续放到这个懒得管的空间中来呢,期待着。

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