Created
May 23, 2017 03:35
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load ip from the qip file
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| package main | |
| import ( | |
| "bufio" | |
| "flag" | |
| "fmt" | |
| "os" | |
| "os/exec" | |
| "sync" | |
| ) | |
| const MaxIPInt int = 255 | |
| func doGet(tasks chan func()) { | |
| for { | |
| task := <-tasks | |
| task() | |
| } | |
| } | |
| func main() { | |
| var ipCmd string | |
| var worker int | |
| var output string | |
| var taskChan chan func() | |
| flag.IntVar(&worker, "worker", 100, "worker count") | |
| flag.StringVar(&output, "output", "ips.txt", "output file") | |
| flag.StringVar(&ipCmd, "cmd", "", "ip command path") | |
| flag.Parse() | |
| if ipCmd == "" { | |
| fmt.Println("please specifiy the ip command") | |
| return | |
| } | |
| outputFp, openErr := os.OpenFile(output, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0666) | |
| if openErr != nil { | |
| fmt.Println("open output file error", openErr) | |
| return | |
| } | |
| defer outputFp.Close() | |
| bWriter := bufio.NewWriter(outputFp) | |
| defer bWriter.Flush() | |
| wg := sync.WaitGroup{} | |
| rwLock := sync.RWMutex{} | |
| var initOne sync.Once | |
| initOne.Do(func() { | |
| taskChan = make(chan func(), worker) | |
| for i := 0; i < worker; i++ { | |
| go doGet(taskChan) | |
| } | |
| }) | |
| for k1 := 1; k1 <= MaxIPInt; k1++ { | |
| for k2 := 1; k2 <= MaxIPInt; k2++ { | |
| for k3 := 1; k3 <= MaxIPInt; k3++ { | |
| for k4 := 1; k4 <= MaxIPInt; k4++ { | |
| newIP := fmt.Sprintf("%d.%d.%d.%d", k1, k2, k3, k4) | |
| wg.Add(1) | |
| taskChan <- func() { | |
| defer wg.Done() | |
| execCmd := exec.Command(ipCmd, newIP) | |
| execOuput, execErr := execCmd.Output() | |
| if execErr != nil { | |
| fmt.Println("get ip", newIP, "error", execErr) | |
| return | |
| } | |
| line := fmt.Sprintf("%s %s", newIP, string(execOuput)) | |
| rwLock.Lock() | |
| bWriter.WriteString(line) | |
| rwLock.Unlock() | |
| } | |
| } | |
| } | |
| } | |
| } | |
| wg.Wait() | |
| } |
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