templatefile/pkg/templater/system_users.go

package templater

import (
	"fmt"
	"log"

	"forge.cadoles.com/pcaseiro/templatefile/pkg/utils"
)

type SystemUser struct {
	UserName string `json:"username"`
	Group    string `json:"group"`
	Home     string `json:"home"`
	Shell    string `json:"shell"`
}

func (su *SystemUser) exists() (bool, error) {
	_, _, err := utils.RunSystemCommand("getent", "passwd", su.UserName)
	if err != nil {
		return false, err
	}
	return true, nil
}

func (su *SystemUser) Manage() error {
	exist, _ := su.exists()
	if exist {
		log.Printf("\tUser %s already exists", su.UserName)
		return nil
	}
	return su.Create()
}

func (su *SystemUser) Create() error {
	// Manage System Group
	grp := SystemGroup{GroupName: su.Group}
	err := grp.Manage()
	if err != nil {
		return err
	}

	_, stdErr, err := utils.RunSystemCommand("useradd", "-b", su.Home, "-m", "-N", "-g", su.Group, su.UserName)
	if err != nil {
		return fmt.Errorf("User %s creation failed with error: %s %v", su.UserName, stdErr, err)
	}
	return nil
}

func (su *SystemUser) Delete() error {
	_, _, err := utils.RunSystemCommand("userdel", su.UserName)
	if err != nil {
		return err
	}
	return nil
}

func (su *SystemUser) Update() error {
	return nil
}