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// -*- Mode: Go; indent-tabs-mode: t -*-
//go:build !nosecboot
/*
* Copyright (C) Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package secboot_test
import (
"fmt"
"os"
"path/filepath"
. "gopkg.in/check.v1"
sb "github.com/snapcore/secboot"
"github.com/snapcore/snapd/secboot"
"github.com/snapcore/snapd/testutil"
)
type authRequestorSuite struct {
testutil.BaseTest
inputFile string
errorFile string
systemctlVersionFile string
systemdAskPasswordCmd *testutil.MockCmd
}
var _ = Suite(&authRequestorSuite{})
func (s *authRequestorSuite) setInput(c *C, input string) {
err := os.WriteFile(s.inputFile, []byte(input), 0644)
c.Assert(err, IsNil)
}
func (s *authRequestorSuite) setError(c *C, message string) {
err := os.WriteFile(s.errorFile, []byte(message), 0644)
c.Assert(err, IsNil)
}
func (s *authRequestorSuite) setSystemdVersion(c *C, version string) {
fullVersion := fmt.Sprintf("systemd %[1]s (%[1]s.4-1ubuntu3)\n+PAM +AUDIT...\n", version)
err := os.WriteFile(s.systemctlVersionFile, []byte(fullVersion), 0644)
c.Assert(err, IsNil)
}
func (s *authRequestorSuite) SetUpTest(c *C) {
commandInputs := c.MkDir()
s.inputFile = filepath.Join(commandInputs, "input")
s.errorFile = filepath.Join(commandInputs, "error")
err := os.WriteFile(s.errorFile, []byte("unset"), 0644)
c.Assert(err, IsNil)
script := fmt.Sprintf(`if [ -r '%[1]s' ]; then cat '%[1]s'; else cat '%[2]s'; exit 1; fi`, s.inputFile, s.errorFile)
fmt.Printf("%s\n", script)
s.systemdAskPasswordCmd = testutil.MockCommand(c, "systemd-ask-password", script)
s.AddCleanup(s.systemdAskPasswordCmd.Restore)
systemctlResults := c.MkDir()
s.systemctlVersionFile = filepath.Join(systemctlResults, "version")
systemctl := fmt.Sprintf(`if [ "${1-}" = --version ]; then cat %[1]s; else exit 1; fi`, s.systemctlVersionFile)
systemctlCmd := testutil.MockCommand(c, "systemctl", systemctl)
s.AddCleanup(systemctlCmd.Restore)
}
func (s *authRequestorSuite) TestRequestPassphrase(c *C) {
authRequestor := secboot.NewSystemdAuthRequestor()
s.setInput(c, "thepassphrase\n")
s.setSystemdVersion(c, "256")
input, err := authRequestor.RequestPassphrase("some-volume", "some-device")
c.Assert(err, IsNil)
c.Check(input, Equals, "thepassphrase")
c.Check(s.systemdAskPasswordCmd.Calls(), DeepEquals, [][]string{
{"systemd-ask-password", "--icon", "drive-harddisk", "--id", "secboot.test:some-device", "--credential=snapd.passphrase", "Please enter the passphrase for volume some-volume for device some-device"},
})
}
func (s *authRequestorSuite) TestRequestPassphraseOldSystemd(c *C) {
authRequestor := secboot.NewSystemdAuthRequestor()
s.setInput(c, "thepassphrase\n")
s.setSystemdVersion(c, "248")
input, err := authRequestor.RequestPassphrase("some-volume", "some-device")
c.Assert(err, IsNil)
c.Check(input, Equals, "thepassphrase")
c.Check(s.systemdAskPasswordCmd.Calls(), DeepEquals, [][]string{
{"systemd-ask-password", "--icon", "drive-harddisk", "--id", "secboot.test:some-device", "Please enter the passphrase for volume some-volume for device some-device"},
})
}
func (s *authRequestorSuite) TestRequestPassphraseFailure(c *C) {
authRequestor := secboot.NewSystemdAuthRequestor()
s.setError(c, "blah blah\n")
s.setSystemdVersion(c, "256")
_, err := authRequestor.RequestPassphrase("some-volume", "some-device")
c.Assert(err, ErrorMatches, "cannot execute systemd-ask-password: exit status 1")
c.Check(s.systemdAskPasswordCmd.Calls(), DeepEquals, [][]string{
{"systemd-ask-password", "--icon", "drive-harddisk", "--id", "secboot.test:some-device", "--credential=snapd.passphrase", "Please enter the passphrase for volume some-volume for device some-device"},
})
}
func (s *authRequestorSuite) TestRequestPassphraseMissingNewLine(c *C) {
authRequestor := secboot.NewSystemdAuthRequestor()
s.setInput(c, "blah blah")
s.setSystemdVersion(c, "256")
_, err := authRequestor.RequestPassphrase("some-volume", "some-device")
c.Assert(err, ErrorMatches, "systemd-ask-password output is missing terminating newline")
c.Check(s.systemdAskPasswordCmd.Calls(), DeepEquals, [][]string{
{"systemd-ask-password", "--icon", "drive-harddisk", "--id", "secboot.test:some-device", "--credential=snapd.passphrase", "Please enter the passphrase for volume some-volume for device some-device"},
})
}
func (s *authRequestorSuite) TestRequestRecoveryKey(c *C) {
authRequestor := secboot.NewSystemdAuthRequestor()
s.setInput(c, "00001-00002-00003-00004-00005-00006-00007-00008\n")
s.setSystemdVersion(c, "256")
input, err := authRequestor.RequestRecoveryKey("some-volume", "some-device")
c.Assert(err, IsNil)
var expected sb.RecoveryKey
copy(expected[:], []byte{1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 0})
c.Check(input, DeepEquals, expected)
c.Check(s.systemdAskPasswordCmd.Calls(), DeepEquals, [][]string{
{"systemd-ask-password", "--icon", "drive-harddisk", "--id", "secboot.test:some-device", "--credential=snapd.recovery", "Please enter the recovery key for volume some-volume for device some-device"},
})
}
func (s *authRequestorSuite) TestRequestRecoveryKeyParseFailure(c *C) {
authRequestor := secboot.NewSystemdAuthRequestor()
s.setInput(c, "broken\n")
s.setSystemdVersion(c, "256")
_, err := authRequestor.RequestRecoveryKey("some-volume", "some-device")
c.Assert(err, ErrorMatches, `cannot parse recovery key: .*`)
c.Check(s.systemdAskPasswordCmd.Calls(), DeepEquals, [][]string{
{"systemd-ask-password", "--icon", "drive-harddisk", "--id", "secboot.test:some-device", "--credential=snapd.recovery", "Please enter the recovery key for volume some-volume for device some-device"},
})
}
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