111 lines
2.2 KiB
Go
111 lines
2.2 KiB
Go
package system
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import (
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"fmt"
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"log"
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"os/exec"
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"os/user"
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"strings"
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)
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type User struct {
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Name string `yaml:"name"`
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PasswordHash string `yaml:"passwd"`
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SSHAuthorizedKeys []string `yaml:"ssh-authorized-keys"`
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SSHImportGithubUser string `yaml:"coreos-ssh-import-github"`
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SSHImportURL string `yaml:"coreos-ssh-import-url"`
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GECOS string `yaml:"gecos"`
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Homedir string `yaml:"homedir"`
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NoCreateHome bool `yaml:"no-create-home"`
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PrimaryGroup string `yaml:"primary-group"`
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Groups []string `yaml:"groups"`
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NoUserGroup bool `yaml:"no-user-group"`
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System bool `yaml:"system"`
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NoLogInit bool `yaml:"no-log-init"`
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}
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func UserExists(u *User) bool {
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_, err := user.Lookup(u.Name)
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return err == nil
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}
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func CreateUser(u *User) error {
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args := []string{}
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if u.PasswordHash != "" {
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args = append(args, "--password", u.PasswordHash)
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} else {
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args = append(args, "--password", "*")
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}
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if u.GECOS != "" {
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args = append(args, "--comment", fmt.Sprintf("%q", u.GECOS))
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}
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if u.Homedir != "" {
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args = append(args, "--home-dir", u.Homedir)
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}
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if u.NoCreateHome {
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args = append(args, "--no-create-home")
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} else {
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args = append(args, "--create-home")
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}
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if u.PrimaryGroup != "" {
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args = append(args, "--gid", u.PrimaryGroup)
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}
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if len(u.Groups) > 0 {
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args = append(args, "--groups", strings.Join(u.Groups, ","))
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}
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if u.NoUserGroup {
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args = append(args, "--no-user-group")
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}
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if u.System {
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args = append(args, "--system")
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}
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if u.NoLogInit {
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args = append(args, "--no-log-init")
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}
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args = append(args, u.Name)
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output, err := exec.Command("useradd", args...).CombinedOutput()
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if err != nil {
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log.Printf("Command 'useradd %s' failed: %v\n%s", strings.Join(args, " "), err, output)
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}
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return err
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}
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func SetUserPassword(user, hash string) error {
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cmd := exec.Command("/usr/sbin/chpasswd", "-e")
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stdin, err := cmd.StdinPipe()
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if err != nil {
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return err
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}
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err = cmd.Start()
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if err != nil {
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log.Fatal(err)
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}
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arg := fmt.Sprintf("%s:%s", user, hash)
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_, err = stdin.Write([]byte(arg))
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if err != nil {
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return err
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}
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stdin.Close()
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err = cmd.Wait()
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if err != nil {
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return err
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}
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return nil
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}
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