97 lines
2.4 KiB
Go
97 lines
2.4 KiB
Go
package alpine_builder
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import (
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"fmt"
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"io/ioutil"
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"os"
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"os/exec"
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"strings"
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"github.com/GehirnInc/crypt"
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_ "github.com/GehirnInc/crypt/sha256_crypt"
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)
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// system configurations
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var systemShadow = "/data/etc/shadow"
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var systemDropbearConfig = "/data/etc/dropbear/dropbear.conf"
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var systemDropbearRestart = "rc-service dropbear start"
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var systemShutdown = "poweroff"
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var systemReboot = "reboot"
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// SystemSetRootPassword update shadow file
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func SystemSetRootPassword(password string) error {
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crypter := crypt.SHA256.New()
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// generate password line
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hash, err := crypter.Generate([]byte(password), nil)
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if err != nil {
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return fmt.Errorf("failed to generate hash: %w", err)
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}
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line := fmt.Sprintf("root:%s:0:0:::::\n", hash)
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// write shadow file
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return ioutil.WriteFile(systemShadow, []byte(line), os.ModePerm)
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}
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// SystemSSHEnabled returns true if server is enabled
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func SystemSSHEnabled() (bool, error) {
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data, err := ioutil.ReadFile(systemDropbearConfig)
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if err != nil {
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return false, fmt.Errorf("failed to read ssh config: %w", err)
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}
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return !strings.Contains(string(data), "127.0.0.1:22"), nil
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}
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// SystemEnableSSH server
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func SystemEnableSSH() error {
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err := ioutil.WriteFile(systemDropbearConfig, []byte("DROPBEAR_OPTS=\"\""), os.ModePerm)
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if err != nil {
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return fmt.Errorf("failed to write ssh config: %w", err)
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}
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cmdSplit := strings.Split(systemDropbearRestart, " ")
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cmd := exec.Command(cmdSplit[0], cmdSplit[1:]...)
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err = cmd.Run()
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if err != nil {
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return fmt.Errorf("failed to restart ssh server: %w", err)
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}
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return nil
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}
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// SystemDisableSSH server
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func SystemDisableSSH() error {
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err := ioutil.WriteFile(systemDropbearConfig, []byte("DROPBEAR_OPTS=\"-p 127.0.0.1:22\""), os.ModePerm)
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if err != nil {
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return fmt.Errorf("failed to write ssh config: %w", err)
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}
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cmdSplit := strings.Split(systemDropbearRestart, " ")
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cmd := exec.Command(cmdSplit[0], cmdSplit[1:]...)
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err = cmd.Run()
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if err != nil {
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return fmt.Errorf("failed to restart ssh server: %w", err)
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}
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return nil
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}
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// SystemShutdown start shutdown of system
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func SystemShutdown() error {
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cmd := exec.Command(systemShutdown)
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err := cmd.Run()
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if err != nil {
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return fmt.Errorf("failed to start system shutdown: %w", err)
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}
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return nil
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}
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// SystemReboot start reboot of system
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func SystemReboot() error {
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cmd := exec.Command(systemReboot)
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err := cmd.Run()
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if err != nil {
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return fmt.Errorf("failed to start system reboot: %w", err)
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}
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return nil
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}
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