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| package main
import ( "bufio" "fmt" "net" "os" "regexp" "sync" "time"
"github.com/go-ping/ping" )
var ( core int = 200 interval time.Duration = 10 ipsArr = []string{} )
func generateIPs(subnet string) []string { ips := []string{} ip, ipNet, err := net.ParseCIDR(subnet) if err != nil { fmt.Println("无效的子网掩码:", err) return ips }
for ip := ip.Mask(ipNet.Mask); ipNet.Contains(ip); incIP(ip) { ips = append(ips, ip.String()) }
return ips[1 : len(ips)-1] }
func incIP(ip net.IP) { for j := len(ip) - 1; j >= 0; j-- { ip[j]++ if ip[j] > 0 { break } } }
func main() {
file, err := os.Open("ips.txt") if err != nil { fmt.Println("打开文件失败:", err) return } defer file.Close() ipPattern := `(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\/\d{1,2})` re := regexp.MustCompile(ipPattern)
scanner := bufio.NewScanner(file)
for scanner.Scan() { line := scanner.Text() ips := re.FindAllString(line, -1) for _, ip := range ips { fmt.Println("找到ip地址:", ip) ipList := generateIPs(ip) ipsArr = append(ipsArr, ipList...) }
}
ipsChannl := make(chan string, len(ipsArr)) for i := 0; i < len(ipsArr); i++ { ipsChannl <- ipsArr[i] }
count := 0
close(ipsChannl)
results := make(chan string, len(ipsArr))
var wg sync.WaitGroup
for i := 0; i < core; i++ { wg.Add(1) time.Sleep(time.Millisecond * interval) go func(id int) { defer wg.Done() PING(id, ipsChannl, results, &count, len(ipsArr)) }(i) } stop := false for ip := range results { saveToText(ip) if stop { break } } go func() { wg.Wait() close(results) stop = true }()
if err := scanner.Err(); err != nil { fmt.Println("解析文件失败:", err) }
}
func PING(id int, ips <-chan string, results chan string, count *int, total int) {
for ip := range ips { fmt.Printf("协程编号: %d ,开始处理任务: %s ,当前进度:%d / %d \n", id, ip, *count, total)
pinger, err := ping.NewPinger(ip) if err != nil { fmt.Printf("NewPinger error:%s\n", err.Error()) } pinger.Count = 4 pinger.Timeout = time.Second * 2 pinger.SetPrivileged(true) err = pinger.Run() if err != nil { fmt.Printf("ping异常:%s\n", err.Error()) } stats := pinger.Statistics() if stats.PacketsRecv >= 1 { fmt.Printf("IP ping成功:%s\n", ip) results <- ip } else { fmt.Printf("IP ping不通:%s\n", ip) } *count += 1 time.Sleep(time.Microsecond * 100) }
}
func saveToText(ip string) { file, err := os.OpenFile("reachable_ips.txt", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0777) if err != nil { fmt.Println("打开文档出错:", err) return } defer file.Close()
_, err = fmt.Fprintln(file, ip) if err != nil { fmt.Println("写入数据出错:", err) } }
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