call adduser, usermod

cmd/welcome/main.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"net/mail"
 	"os"
+	"os/exec"
 	"regexp"
 	"strings"
 
@@ -244,12 +245,41 @@ func _main() error {
 	s = s.SetString("cool, awesome, going to make your account now...")
 	fmt.Println(s)
 
-	// TODO have enough to make account; can now do that
+	if err = createUser(*data); err != nil {
+		s = s.SetString(fmt.Sprintf(`augh, I'm sorry. the account creation failed.
+Please email root@tilde.town and paste the following error:
+
+%s
+
+Your invite code has not been marked as used and you're welcome to try again, though if there is a system issue you might need to wait for word from an admin.`, err.Error()))
+		fmt.Println(s)
+		return nil
+	}
+
 	// TODO assuming account creation succeeded, mark invite as used
 
 	return nil
 }
 
+// TODO add logging like the signup tool has
+
+func createUser(data newUserData) (err error) {
+	cmd := exec.Command("sudo", "/usr/sbin/adduser", "--quiet", "--disabled-password", data.Username)
+	if err = cmd.Run(); err != nil {
+		return fmt.Errorf("adduser failed: %w", err)
+	}
+
+	cmd = exec.Command("sudo", "/usr/sbin/usermod", "-a", "-G", "town", data.Username)
+	if err = cmd.Run(); err != nil {
+		return fmt.Errorf("usermod failed: %w", err)
+	}
+
+	// TODO create keyfile by running helper (helper should also make ~/.ssh)
+	// TODO generate welcome gift
+	// TODO any alerts
+	return errors.New("not implemented")
+}
+
 func main() {
 	// TODO friendlier error handling
 	err := _main()