Go 调用 Clamav/libclamav

• Clamav
• Go 调用 Clamav (libclamav)
• • 环境安装
  • • Ubuntu
  • 使用 go-clamav 库
  • 代码地址

Clam AntiVirus（ClamAV）是免费而且开放源代码的防毒软件，软件与病毒码的更新皆由社群免费发布。目前ClamAV主要是使用在由Linux、FreeBSD等Unix-like系统架设的邮件服务器上，提供电子邮件的病毒扫描服务。ClamAV本身是在文字接口下运作，但也有许多图形接口的前端工具可用，另外由于其开放源代码的特性，在Windows与Mac OS X平台都有其移植版

apt-get update && apt-get install -y 
  `# install tools` 
  gcc make pkg-config python3 python3-pip python3-pytest valgrind 
  `# install clamav dependencies` 
  check libbz2-dev libcurl4-openssl-dev libjson-c-dev libmilter-dev 
  libncurses5-dev libpcre2-dev libssl-dev libxml2-dev zlib1g-dev

  python3 -m pip install --user cmake / apt-get install cmake

从 clamav 官方下载源码 downloads page

tar xzf clamav-[ver].tar.gz
cd clamav-[ver]

mkdir build && cd build

cmake ..
cmake --build .
ctest
sudo cmake --build . --target install

其他 Linux 发行版参照 clamav documentation

下载 go-clamav

go get github.com/ca110us/go-clamav

快速开始

package main

import (
	"fmt"

	clamav "github.com/ca110us/go-clamav"
)

func main() {
	// new clamav instance
	c := new(clamav.Clamav)
	err := c.Init(clamav.SCAN_OPTIONS{
		General:   0,
		Parse:     clamav.CL_SCAN_PARSE_ARCHIVE | clamav.CL_SCAN_PARSE_ELF,
		Heuristic: 0,
		Mail:      0,
		Dev:       0,
	})

	if err != nil {
		panic(err)
	}

	// free clamav memory
	defer c.Free()

	// load db
	signo, err := c.LoadDB("./db", uint(clamav.CL_DB_DIRECTORY))
	if err != nil {
		panic(err)
	}
	fmt.Println("db load succeed:", signo)

	// compile engine
	err = c.CompileEngine()
	if err != nil {
		panic(err)
	}

	c.EngineSetNum(clamav.CL_ENGINE_MAX_SCANSIZE, 1024*1024*40)
	c.EngineSetNum(clamav.CL_ENGINE_MAX_SCANTIME, 9000)
	// fmt.Println(c.EngineGetNum(clamav.CL_ENGINE_MAX_SCANSIZE))

	// scan
	scanned, virusName, ret := c.ScanFile("./test_file/nmap")
	fmt.Println(scanned, virusName, ret)
}

$ go run main.go

db load succeed: 9263
209 YARA.Unix_Packer_UpxDetail.UNOFFICIAL Virus(es) detected

测试扫描 nmap，可以发现输出 YARA.Unix_Packer_UpxDetail.UNOFFICIAL

测试代码地址
go-clamav