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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2014-2015 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 bootloader_test
import (
"bytes"
"os"
"path/filepath"
. "gopkg.in/check.v1"
"github.com/snapcore/snapd/bootloader"
"github.com/snapcore/snapd/bootloader/assets"
)
type configAssetTestSuite struct {
baseBootenvTestSuite
}
var _ = Suite(&configAssetTestSuite{})
func (s *configAssetTestSuite) TestTrivialFromConfigAssert(c *C) {
e, err := bootloader.EditionFromConfigAsset(bytes.NewBufferString(`# Snapd-Boot-Config-Edition: 321
next line
one after that`))
c.Assert(err, IsNil)
c.Assert(e, Equals, uint(321))
e, err = bootloader.EditionFromConfigAsset(bytes.NewBufferString(`# Snapd-Boot-Config-Edition: 932
# Snapd-Boot-Config-Edition: 321
one after that`))
c.Assert(err, IsNil)
c.Assert(e, Equals, uint(932))
e, err = bootloader.EditionFromConfigAsset(bytes.NewBufferString(`# Snapd-Boot-Config-Edition: 1234
one after that
# Snapd-Boot-Config-Edition: 321
`))
c.Assert(err, IsNil)
c.Assert(e, Equals, uint(1234))
}
func (s *configAssetTestSuite) TestTrivialFromFile(c *C) {
d := c.MkDir()
p := filepath.Join(d, "foo")
os.WriteFile(p, []byte(`# Snapd-Boot-Config-Edition: 123
this is some
this too`), 0644)
e, err := bootloader.EditionFromDiskConfigAsset(p)
c.Assert(err, IsNil)
c.Assert(e, Equals, uint(123))
}
func (s *configAssetTestSuite) TestRealConfig(c *C) {
grubConfig := assets.Internal("grub.cfg")
c.Assert(grubConfig, NotNil)
e, err := bootloader.EditionFromConfigAsset(bytes.NewReader(grubConfig))
c.Assert(err, IsNil)
c.Assert(e, Equals, uint(3))
}
func (s *configAssetTestSuite) TestRealRecoveryConfig(c *C) {
grubRecoveryConfig := assets.Internal("grub-recovery.cfg")
c.Assert(grubRecoveryConfig, NotNil)
e, err := bootloader.EditionFromConfigAsset(bytes.NewReader(grubRecoveryConfig))
c.Assert(err, IsNil)
c.Assert(e, Equals, uint(2))
}
func (s *configAssetTestSuite) TestNoConfig(c *C) {
_, err := bootloader.EditionFromConfigAsset(bytes.NewReader(nil))
c.Assert(err, ErrorMatches, "cannot read config asset: unexpected EOF")
}
func (s *configAssetTestSuite) TestNoFile(c *C) {
d := c.MkDir()
p := filepath.Join(d, "foo")
// file does not exist
_, err := bootloader.EditionFromDiskConfigAsset(p)
c.Assert(err, ErrorMatches, "no edition")
}
func (s *configAssetTestSuite) TestUnreadableFile(c *C) {
// root has DAC override
if os.Geteuid() == 0 {
c.Skip("test case cannot be correctly executed by root")
}
d := c.MkDir()
p := filepath.Join(d, "foo")
err := os.WriteFile(p, []byte("foo"), 0000)
c.Assert(err, IsNil)
_, err = bootloader.EditionFromDiskConfigAsset(p)
c.Assert(err, ErrorMatches, "cannot load existing config asset: .*/foo: permission denied")
}
func (s *configAssetTestSuite) TestNoEdition(c *C) {
_, err := bootloader.EditionFromConfigAsset(bytes.NewReader([]byte(`this is some script
without edition header
`)))
c.Assert(err, ErrorMatches, "no edition")
}
func (s *configAssetTestSuite) TestBadEdition(c *C) {
_, err := bootloader.EditionFromConfigAsset(bytes.NewReader([]byte(`# Snapd-Boot-Config-Edition: random
data follows
`)))
c.Assert(err, ErrorMatches, `cannot parse asset edition: .* parsing "random": invalid syntax`)
}
func (s *configAssetTestSuite) TestConfigAssetFrom(c *C) {
script := []byte(`# Snapd-Boot-Config-Edition: 123
data follows
`)
bs, err := bootloader.ConfigAssetFrom(script)
c.Assert(err, IsNil)
c.Assert(bs, NotNil)
c.Assert(bs.Edition(), Equals, uint(123))
c.Assert(bs.Raw(), DeepEquals, script)
}
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