52 lines
966 B
Go
52 lines
966 B
Go
package command
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import (
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"errors"
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"fmt"
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"os/exec"
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"regexp"
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"strings"
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)
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func checkingNFT(path string) error {
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if path == "" {
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return errors.New("path is empty")
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}
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cmd := exec.Command(path, "-V")
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out, err := cmd.CombinedOutput()
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if err != nil {
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return errors.New("nftables not found")
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}
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lines := regexp.MustCompile("\r?\n").Split(strings.TrimSpace(string(out)), -1)
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json := false
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for index, line := range lines {
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line = strings.TrimSpace(line)
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if index == 0 {
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if !strings.HasPrefix(line, "nftables") {
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return errors.New("nftables not found")
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}
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continue
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}
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if strings.HasPrefix(line, "json:") && strings.HasSuffix(line, "yes") {
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json = true
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}
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}
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if !json {
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return errors.New("nftables disabled json")
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}
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cmd = exec.Command(path, "list", "ruleset")
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out, err = cmd.CombinedOutput()
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if err != nil {
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return fmt.Errorf("nftables is not available or not supported by the kernel: %s", string(out))
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}
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return nil
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}
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