perm_test.go

Documentation: github.com/theupdateframework/go-tuf/internal/fsutil

     1  //go:build !windows
     2  // +build !windows
     3  
     4  package fsutil
     5  
     6  import (
     7  	"os"
     8  	"path/filepath"
     9  	"testing"
    10  
    11  	"github.com/stretchr/testify/assert"
    12  )
    13  
    14  func TestEnsureMaxPermissions(t *testing.T) {
    15  	tmp := t.TempDir()
    16  	p := filepath.Join(tmp, "file.txt")
    17  
    18  	// Start with 0644 and change using os.Chmod so umask doesn't interfere.
    19  	err := os.WriteFile(p, []byte(`AAA`), 0644)
    20  	assert.NoError(t, err)
    21  
    22  	// Check matching (1)
    23  	err = os.Chmod(p, 0464)
    24  	assert.NoError(t, err)
    25  	fi, err := os.Stat(p)
    26  	assert.NoError(t, err)
    27  	err = EnsureMaxPermissions(fi, os.FileMode(0464))
    28  	assert.NoError(t, err)
    29  
    30  	// Check matching (2)
    31  	err = os.Chmod(p, 0642)
    32  	assert.NoError(t, err)
    33  	fi, err = os.Stat(p)
    34  	assert.NoError(t, err)
    35  	err = EnsureMaxPermissions(fi, os.FileMode(0642))
    36  	assert.NoError(t, err)
    37  
    38  	// Check matching with file mode bits
    39  	err = os.Chmod(p, 0444)
    40  	assert.NoError(t, err)
    41  	fi, err = os.Stat(p)
    42  	assert.NoError(t, err)
    43  	err = EnsureMaxPermissions(fi, os.ModeSymlink|os.ModeAppend|os.FileMode(0444))
    44  	assert.NoError(t, err)
    45  
    46  	// Check not matching (1)
    47  	err = os.Chmod(p, 0444)
    48  	assert.NoError(t, err)
    49  	fi, err = os.Stat(p)
    50  	assert.NoError(t, err)
    51  	err = EnsureMaxPermissions(fi, os.FileMode(0400))
    52  	assert.Error(t, err)
    53  
    54  	// Check not matching (2)
    55  	err = os.Chmod(p, 0444)
    56  	assert.NoError(t, err)
    57  	fi, err = os.Stat(p)
    58  	assert.NoError(t, err)
    59  	err = EnsureMaxPermissions(fi, os.FileMode(0222))
    60  	assert.Error(t, err)
    61  
    62  	// Check matching due to more restrictive perms on file
    63  	err = os.Chmod(p, 0444)
    64  	assert.NoError(t, err)
    65  	fi, err = os.Stat(p)
    66  	assert.NoError(t, err)
    67  	err = EnsureMaxPermissions(fi, os.FileMode(0666))
    68  	assert.NoError(t, err)
    69  }
    70
View as plain text