75 lines
1.5 KiB
Go
75 lines
1.5 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"log"
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"os"
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"regexp"
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"time"
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"github.com/urfave/cli"
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)
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const (
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zoneFilePath = "/var/bind/pri/localhost.zone"
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)
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var re = regexp.MustCompile(`^([0-9]{1,3}|\*)\.([0-9]{1,3}|\*)\.([0-9]{1,3}|\*)\.([0-9]{1,3}|\*)$`)
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func main() {
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app := cli.NewApp()
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app.Name = "spamip"
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app.Version = "0.2"
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app.Compiled = time.Now()
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app.Authors = []cli.Author{
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{
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Name: "Darko Luketic",
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Email: "info@icod.de",
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},
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}
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app.Usage = "spamip is a tool that adds an IP to a bind zone file in DNSBL format"
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app.Flags = []cli.Flag{
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cli.StringFlag{
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Name: "file, f",
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Usage: "path/filename of the zone file",
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EnvVar: "SPAMIP_FILE",
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Required: false,
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Hidden: false,
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TakesFile: false,
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Value: zoneFilePath,
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},
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}
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app.Action = func(c *cli.Context) error {
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if len(c.Args()) != 1 {
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return errors.New("add takes exactly 1 argument, an IPv4 address")
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}
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if !re.MatchString(c.Args().First()) {
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return errors.New(c.Args().First() + "is not an IPv4 address")
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}
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s := re.FindStringSubmatch(c.Args().First())
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text := fmt.Sprintf("%s.%s.%s.%s\tIN\tA\t127.0.0.3\n", s[4], s[3], s[2], s[1])
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return appendText(text, c.GlobalString("file"))
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}
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err := app.Run(os.Args)
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if err != nil {
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log.Fatal(err)
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}
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}
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func appendText(text, file string) error {
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f, e := os.OpenFile(file, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
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if e != nil {
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return e
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}
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if n, e := f.WriteString(text); e != nil {
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return e
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} else if n != len(text) {
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return errors.New("did not write all the text")
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}
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return f.Close()
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}
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