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Introduction

实现了自定义procedure

  • bytecodedl.findOnePath
    • findOnePath(@Name("start") Node start, @Name("end") Node end, @Name("maxLength") long maxLength, @Name(value = "relationshipType", defaultValue = "Call") String relationType, @Name(value = "callProperty", defaultValue = "insn") String callProperty)
  • bytecodedl.biFindOnePath
    • biFindOnePath(@Name("start") Node start, @Name("end") Node end, @Name("maxLength") long maxLength, @Name(value = "relationshipType", defaultValue = "Call") String relationType, @Name(value = "callProperty", defaultValue = "insn") String callProperty)

其中各个参数的意义

  • start: 开始节点
  • end: 结束节点
  • maxLength: path 最大长度
  • relationshipType: 边的类型 默认是Call
  • callProperty: 边的属性名称 默认是insn 值的格式为<org.apache.logging.log4j.core.appender.ScriptAppenderSelector$Builder: org.apache.logging.log4j.core.Appender build()>/org.apache.logging.log4j.Logger.error/0,会根据这个值计算multi dispatch

功能包括:

  • 从start到end找到长度小于maxlength任意一条路径就返回 -> 速度较快
  • 然后找到该路径第一个存在multi dispatch的边,同时返回所有的dispatch结果 -> 方便排查virtual invoke存在多个callee的情况
  • 过滤掉属性is_deleted为1的边

Build

./mvnw clean package -DskipTests

Install

  • 手动安装
    • releases下载最新的jar, 然后放到neo4j的/var/lib/neo4j/plugins目录
    • 然后在/var/lib/neo4j/conf/neo4j.conf增加一行dbms.security.procedures.unrestricted=bytecodedl.*
  • docker
    • docker pull wuxxxxx/neo4j-server:5.12.0-bytecodedl-pathfinder-1.0.1