golang 基于nmap 的内网扫描主机功能

用于扫描内网网段内所有主机信息,

用到了 nmap , redis, json,  

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//  1分钟到2分钟左右
package main
 
import (
    "encoding/json"
    "fmt"
    "strings"
    "sync"
    "time"
 
    "github.com/Ullaakut/nmap"
    "github.com/gomodule/redigo/redis"
)
 
var (
    ListHostIP []string
    wg sync.WaitGroup
    rwlock sync.RWMutex
)
 
type Port struct {
    Id uint16 `json:"id"`
    Name string `json:"name"`
    State string `json:"state"`
}
type HostInfo struct {
    Ip string `json:"ip"`
    OsName string `json:"os_name"`
    Ports []*Port `json:"ports"`
}
 
// 初始化连接池
func initPool(server, pass string, database int) *redis.Pool {
    return &redis.Pool{
        // 设置最大空闲
        MaxIdle: 64,
        // 设置最大活跃数 0代表无限
        MaxActive:0,
        // 闲置空闲时间,单位秒
        IdleTimeout:3600,
        Dial: func() (redis.Conn, error) {
            conn, err := redis.Dial("tcp", server,
                redis.DialReadTimeout(time.Second*10),
                redis.DialConnectTimeout(time.Second*30),
                redis.DialPassword(pass),
                redis.DialDatabase(database),
            )
            if err != nil {
                fmt.Println("ERROR: fail init redis pool:", err.Error())
                return nil, fmt.Errorf("ERROR: fail init redis pool: %s", err.Error())
            }
            return conn, err
        },
    }
}
 
func main() {
    start := time.Now()
    // redis创建连接池 ip, pass ,db
    pool := initPool("192.168.1.5:6379","",11)
    //  池子的关闭
    defer pool.Close()
 
    //  从池子取连接
    conn:=pool.Get()
 
    // 当前一个连接的关闭,用完即放回去池子并不是真的关闭
    defer conn.Close()
 
    go func() {
        // 清理在线列表
        rep ,err := redis.Values(conn.Do("lrange","iplist",0,-1))
        for _, v := range rep {
            _,err = conn.Do("del",v.([]byte))
        }
        _,err = conn.Do("del","iplist")
        if err != nil{
            fmt.Println("del err ",err)
        }
    }()
 
    // nmap -O 192.168.0.0/24
    scanner, err := nmap.NewScanner(
        nmap.WithTargets("192.168.1.0/24"),
        nmap.WithPingScan(),
    )
    if err != nil {
        fmt.Println("unable to create nmap scanner: %v", err)
    }
 
    result, _, err := scanner.Run()
    if err != nil {
        fmt.Println("run nmap scan failed: %v", err)
    }
 
    for _, host := range result.Hosts {
        // 查询出所有在线 IP
        ip := fmt.Sprintf("%s", host.Addresses[0])
        // 返回给数组
        ListHostIP=append(ListHostIP,ip)
    }
 
    for _,ip := range ListHostIP{
        // 遍历每个ip 开启多个 goroutine
        go func(ip string) {
            defer wg.Done()
            data := HostsInfo(ip)
            rwlock.RLock()
            if data != ""{
                fmt.Println(ip)
                _, err = conn.Do("set", ip, data)
                _, err = conn.Do("rpush","iplist", ip)
                if err != nil{
                    fmt.Println("set err ",err)
                }
            }
            rwlock.RUnlock()
        }(ip)
        wg.Add(1)
    }
    // 等待所有完成
    wg.Wait()
    fmt.Println( time.Now().Sub(start))
}
 
// 扫描具体信息
func HostsInfo(ips string) (data string) {
    scanner, err := nmap.NewScanner(
        nmap.WithTargets(ips),
        // 开启快速查询  -F
        //nmap.WithFastMode(),
        // 标准查询  -O
        nmap.WithOSDetection(),
    )
    if err != nil {
        fmt.Println("unable to create nmap scanner: %v", err)
    }
    result, _, err := scanner.Run()
    if err != nil {
        fmt.Println("run nmap scan failed: %v", err)
    }
    // 初始化结构体
    hosts := new(HostInfo)
 
    for _, host := range result.Hosts {
        // 过滤 主机 条件
        for _, match := range host.OS.Matches {
            os_name := match.Name
            if strings.Contains(os_name,"Linux") && !strings.Contains(os_name,"Android"){
                rwlock.Lock()
                hosts.OsName = match.Name
                hosts.Ip = ips
                rwlock.Unlock()
                //    查主机  端口 和服务 信息
                for _, port := range host.Ports {
                    if port.Service.Name != "" {
                        rwlock.Lock()
                        hosts.Ports = append(hosts.Ports, &Port{
                            Id:    port.ID,
                            State: port.State.State,
                            Name:  port.Service.Name,
                        })
                        rwlock.Unlock()
                    }
                }
            }
        }
    }
    if  hosts.Ports != nil{
            json_data, _ := json.Marshal(hosts)
            return string(json_data)
    }
    return ""
}

  

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