622 lines
17 KiB
Go
622 lines
17 KiB
Go
package filesystem
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import (
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"bufio"
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"bytes"
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"errors"
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"math/rand"
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"os"
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"path/filepath"
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"sync/atomic"
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"testing"
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"unicode/utf8"
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. "github.com/franela/goblin"
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"github.com/pterodactyl/wings/config"
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)
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func NewFs() (*Filesystem, *rootFs) {
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config.Set(&config.Configuration{
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AuthenticationToken: "abc",
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System: config.SystemConfiguration{
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RootDirectory: "/server",
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DiskCheckInterval: 150,
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},
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})
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tmpDir, err := os.MkdirTemp(os.TempDir(), "pterodactyl")
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if err != nil {
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panic(err)
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}
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// defer os.RemoveAll(tmpDir)
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rfs := rootFs{root: tmpDir}
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rfs.reset()
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fs := New(filepath.Join(tmpDir, "/server"), 0, []string{})
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fs.isTest = true
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return fs, &rfs
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}
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type rootFs struct {
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root string
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}
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func getFileContent(file *os.File) string {
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var w bytes.Buffer
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if _, err := bufio.NewReader(file).WriteTo(&w); err != nil {
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panic(err)
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}
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return w.String()
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}
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func (rfs *rootFs) CreateServerFile(p string, c []byte) error {
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f, err := os.Create(filepath.Join(rfs.root, "/server", p))
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if err == nil {
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f.Write(c)
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f.Close()
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}
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return err
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}
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func (rfs *rootFs) CreateServerFileFromString(p string, c string) error {
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return rfs.CreateServerFile(p, []byte(c))
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}
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func (rfs *rootFs) StatServerFile(p string) (os.FileInfo, error) {
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return os.Stat(filepath.Join(rfs.root, "/server", p))
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}
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func (rfs *rootFs) reset() {
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if err := os.RemoveAll(filepath.Join(rfs.root, "/server")); err != nil {
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if !os.IsNotExist(err) {
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panic(err)
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}
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}
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if err := os.Mkdir(filepath.Join(rfs.root, "/server"), 0o755); err != nil {
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panic(err)
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}
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}
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func TestFilesystem_Openfile(t *testing.T) {
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g := Goblin(t)
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fs, rfs := NewFs()
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g.Describe("File", func() {
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g.It("returns custom error when file does not exist", func() {
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_, _, err := fs.File("foo/bar.txt")
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g.Assert(err).IsNotNil()
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g.Assert(IsErrorCode(err, ErrNotExist)).IsTrue()
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})
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g.It("returns file stat information", func() {
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_ = rfs.CreateServerFile("foo.txt", []byte("hello world"))
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f, st, err := fs.File("foo.txt")
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g.Assert(err).IsNil()
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g.Assert(st.Name()).Equal("foo.txt")
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g.Assert(f).IsNotNil()
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_ = f.Close()
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})
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g.AfterEach(func() {
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rfs.reset()
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})
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})
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}
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func TestFilesystem_Writefile(t *testing.T) {
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g := Goblin(t)
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fs, rfs := NewFs()
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g.Describe("Open and WriteFile", func() {
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buf := &bytes.Buffer{}
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// Test that a file can be written to the disk and that the disk space used as a result
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// is updated correctly in the end.
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g.It("can create a new file", func() {
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r := bytes.NewReader([]byte("test file content"))
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g.Assert(atomic.LoadInt64(&fs.diskUsed)).Equal(int64(0))
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err := fs.Writefile("test.txt", r)
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g.Assert(err).IsNil()
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f, _, err := fs.File("test.txt")
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g.Assert(err).IsNil()
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defer f.Close()
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g.Assert(getFileContent(f)).Equal("test file content")
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g.Assert(atomic.LoadInt64(&fs.diskUsed)).Equal(r.Size())
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})
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g.It("can create a new file inside a nested directory with leading slash", func() {
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r := bytes.NewReader([]byte("test file content"))
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err := fs.Writefile("/some/nested/test.txt", r)
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g.Assert(err).IsNil()
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f, _, err := fs.File("/some/nested/test.txt")
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g.Assert(err).IsNil()
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defer f.Close()
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g.Assert(getFileContent(f)).Equal("test file content")
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})
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g.It("can create a new file inside a nested directory without a trailing slash", func() {
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r := bytes.NewReader([]byte("test file content"))
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err := fs.Writefile("some/../foo/bar/test.txt", r)
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g.Assert(err).IsNil()
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f, _, err := fs.File("foo/bar/test.txt")
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g.Assert(err).IsNil()
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defer f.Close()
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g.Assert(getFileContent(f)).Equal("test file content")
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})
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g.It("cannot create a file outside the root directory", func() {
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r := bytes.NewReader([]byte("test file content"))
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err := fs.Writefile("/some/../foo/../../test.txt", r)
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g.Assert(err).IsNotNil()
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g.Assert(IsErrorCode(err, ErrCodePathResolution)).IsTrue()
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})
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g.It("cannot write a file that exceeds the disk limits", func() {
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atomic.StoreInt64(&fs.diskLimit, 1024)
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b := make([]byte, 1025)
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_, err := rand.Read(b)
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g.Assert(err).IsNil()
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g.Assert(len(b)).Equal(1025)
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r := bytes.NewReader(b)
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err = fs.Writefile("test.txt", r)
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g.Assert(err).IsNotNil()
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g.Assert(IsErrorCode(err, ErrCodeDiskSpace)).IsTrue()
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})
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g.It("truncates the file when writing new contents", func() {
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r := bytes.NewReader([]byte("original data"))
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err := fs.Writefile("test.txt", r)
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g.Assert(err).IsNil()
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r = bytes.NewReader([]byte("new data"))
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err = fs.Writefile("test.txt", r)
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g.Assert(err).IsNil()
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f, _, err := fs.File("test.txt")
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g.Assert(err).IsNil()
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defer f.Close()
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g.Assert(getFileContent(f)).Equal("new data")
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})
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g.AfterEach(func() {
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buf.Truncate(0)
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rfs.reset()
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atomic.StoreInt64(&fs.diskUsed, 0)
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atomic.StoreInt64(&fs.diskLimit, 0)
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})
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})
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}
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func TestFilesystem_CreateDirectory(t *testing.T) {
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g := Goblin(t)
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fs, rfs := NewFs()
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g.Describe("CreateDirectory", func() {
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g.It("should create missing directories automatically", func() {
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err := fs.CreateDirectory("test", "foo/bar/baz")
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g.Assert(err).IsNil()
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st, err := rfs.StatServerFile("foo/bar/baz/test")
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g.Assert(err).IsNil()
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g.Assert(st.IsDir()).IsTrue()
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g.Assert(st.Name()).Equal("test")
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})
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g.It("should work with leading and trailing slashes", func() {
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err := fs.CreateDirectory("test", "/foozie/barzie/bazzy/")
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g.Assert(err).IsNil()
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st, err := rfs.StatServerFile("foozie/barzie/bazzy/test")
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g.Assert(err).IsNil()
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g.Assert(st.IsDir()).IsTrue()
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g.Assert(st.Name()).Equal("test")
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})
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g.It("should not allow the creation of directories outside the root", func() {
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err := fs.CreateDirectory("test", "e/../../something")
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g.Assert(err).IsNotNil()
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g.Assert(IsErrorCode(err, ErrCodePathResolution)).IsTrue()
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})
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g.It("should not increment the disk usage", func() {
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err := fs.CreateDirectory("test", "/")
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g.Assert(err).IsNil()
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g.Assert(atomic.LoadInt64(&fs.diskUsed)).Equal(int64(0))
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})
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g.AfterEach(func() {
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rfs.reset()
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})
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})
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}
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func TestFilesystem_Rename(t *testing.T) {
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g := Goblin(t)
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fs, rfs := NewFs()
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g.Describe("Rename", func() {
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g.BeforeEach(func() {
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if err := rfs.CreateServerFileFromString("source.txt", "text content"); err != nil {
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panic(err)
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}
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})
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g.It("returns an error if the target already exists", func() {
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err := rfs.CreateServerFileFromString("target.txt", "taget content")
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g.Assert(err).IsNil()
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err = fs.Rename("source.txt", "target.txt")
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g.Assert(err).IsNotNil()
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g.Assert(errors.Is(err, os.ErrExist)).IsTrue()
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})
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g.It("returns an error if the final destination is the root directory", func() {
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err := fs.Rename("source.txt", "/")
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g.Assert(err).IsNotNil()
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g.Assert(errors.Is(err, os.ErrExist)).IsTrue()
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})
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g.It("returns an error if the source destination is the root directory", func() {
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err := fs.Rename("source.txt", "/")
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g.Assert(err).IsNotNil()
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g.Assert(errors.Is(err, os.ErrExist)).IsTrue()
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})
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g.It("does not allow renaming to a location outside the root", func() {
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err := fs.Rename("source.txt", "../target.txt")
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g.Assert(err).IsNotNil()
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g.Assert(IsErrorCode(err, ErrCodePathResolution)).IsTrue()
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})
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g.It("does not allow renaming from a location outside the root", func() {
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err := rfs.CreateServerFileFromString("/../ext-source.txt", "taget content")
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err = fs.Rename("/../ext-source.txt", "target.txt")
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g.Assert(err).IsNotNil()
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g.Assert(IsErrorCode(err, ErrCodePathResolution)).IsTrue()
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})
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g.It("allows a file to be renamed", func() {
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err := fs.Rename("source.txt", "target.txt")
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g.Assert(err).IsNil()
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_, err = rfs.StatServerFile("source.txt")
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g.Assert(err).IsNotNil()
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g.Assert(errors.Is(err, os.ErrNotExist)).IsTrue()
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st, err := rfs.StatServerFile("target.txt")
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g.Assert(err).IsNil()
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g.Assert(st.Name()).Equal("target.txt")
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g.Assert(st.Size()).IsNotZero()
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})
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g.It("allows a folder to be renamed", func() {
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err := os.Mkdir(filepath.Join(rfs.root, "/server/source_dir"), 0o755)
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g.Assert(err).IsNil()
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err = fs.Rename("source_dir", "target_dir")
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g.Assert(err).IsNil()
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_, err = rfs.StatServerFile("source_dir")
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g.Assert(err).IsNotNil()
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g.Assert(errors.Is(err, os.ErrNotExist)).IsTrue()
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st, err := rfs.StatServerFile("target_dir")
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g.Assert(err).IsNil()
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g.Assert(st.IsDir()).IsTrue()
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})
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g.It("returns an error if the source does not exist", func() {
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err := fs.Rename("missing.txt", "target.txt")
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g.Assert(err).IsNotNil()
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g.Assert(errors.Is(err, os.ErrNotExist)).IsTrue()
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})
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g.It("creates directories if they are missing", func() {
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err := fs.Rename("source.txt", "nested/folder/target.txt")
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g.Assert(err).IsNil()
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st, err := rfs.StatServerFile("nested/folder/target.txt")
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g.Assert(err).IsNil()
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g.Assert(st.Name()).Equal("target.txt")
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})
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g.AfterEach(func() {
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rfs.reset()
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})
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})
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}
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func TestFilesystem_Copy(t *testing.T) {
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g := Goblin(t)
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fs, rfs := NewFs()
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g.Describe("Copy", func() {
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g.BeforeEach(func() {
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if err := rfs.CreateServerFileFromString("source.txt", "text content"); err != nil {
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panic(err)
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}
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atomic.StoreInt64(&fs.diskUsed, int64(utf8.RuneCountInString("test content")))
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})
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g.It("should return an error if the source does not exist", func() {
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err := fs.Copy("foo.txt")
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g.Assert(err).IsNotNil()
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g.Assert(errors.Is(err, os.ErrNotExist)).IsTrue()
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})
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g.It("should return an error if the source is outside the root", func() {
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err := rfs.CreateServerFileFromString("/../ext-source.txt", "text content")
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err = fs.Copy("../ext-source.txt")
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g.Assert(err).IsNotNil()
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g.Assert(IsErrorCode(err, ErrCodePathResolution)).IsTrue()
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})
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g.It("should return an error if the source directory is outside the root", func() {
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err := os.MkdirAll(filepath.Join(rfs.root, "/nested/in/dir"), 0o755)
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g.Assert(err).IsNil()
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err = rfs.CreateServerFileFromString("/../nested/in/dir/ext-source.txt", "external content")
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g.Assert(err).IsNil()
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err = fs.Copy("../nested/in/dir/ext-source.txt")
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g.Assert(err).IsNotNil()
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g.Assert(IsErrorCode(err, ErrCodePathResolution)).IsTrue()
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err = fs.Copy("nested/in/../../../nested/in/dir/ext-source.txt")
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g.Assert(err).IsNotNil()
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g.Assert(IsErrorCode(err, ErrCodePathResolution)).IsTrue()
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})
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g.It("should return an error if the source is a directory", func() {
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err := os.Mkdir(filepath.Join(rfs.root, "/server/dir"), 0o755)
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g.Assert(err).IsNil()
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err = fs.Copy("dir")
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g.Assert(err).IsNotNil()
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g.Assert(errors.Is(err, os.ErrNotExist)).IsTrue()
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})
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g.It("should return an error if there is not space to copy the file", func() {
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atomic.StoreInt64(&fs.diskLimit, 2)
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err := fs.Copy("source.txt")
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g.Assert(err).IsNotNil()
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g.Assert(IsErrorCode(err, ErrCodeDiskSpace)).IsTrue()
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})
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g.It("should create a copy of the file and increment the disk used", func() {
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err := fs.Copy("source.txt")
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g.Assert(err).IsNil()
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_, err = rfs.StatServerFile("source.txt")
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g.Assert(err).IsNil()
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_, err = rfs.StatServerFile("source copy.txt")
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g.Assert(err).IsNil()
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})
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g.It("should create a copy of the file with a suffix if a copy already exists", func() {
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err := fs.Copy("source.txt")
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g.Assert(err).IsNil()
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err = fs.Copy("source.txt")
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g.Assert(err).IsNil()
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r := []string{"source.txt", "source copy.txt", "source copy 1.txt"}
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for _, name := range r {
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_, err = rfs.StatServerFile(name)
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g.Assert(err).IsNil()
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}
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g.Assert(atomic.LoadInt64(&fs.diskUsed)).Equal(int64(utf8.RuneCountInString("test content")) * 3)
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})
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g.It("should create a copy inside of a directory", func() {
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err := os.MkdirAll(filepath.Join(rfs.root, "/server/nested/in/dir"), 0o755)
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g.Assert(err).IsNil()
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err = rfs.CreateServerFileFromString("nested/in/dir/source.txt", "test content")
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g.Assert(err).IsNil()
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err = fs.Copy("nested/in/dir/source.txt")
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g.Assert(err).IsNil()
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_, err = rfs.StatServerFile("nested/in/dir/source.txt")
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g.Assert(err).IsNil()
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_, err = rfs.StatServerFile("nested/in/dir/source copy.txt")
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g.Assert(err).IsNil()
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})
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g.AfterEach(func() {
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rfs.reset()
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atomic.StoreInt64(&fs.diskUsed, 0)
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atomic.StoreInt64(&fs.diskLimit, 0)
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})
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})
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}
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func TestFilesystem_Delete(t *testing.T) {
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g := Goblin(t)
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fs, rfs := NewFs()
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g.Describe("Delete", func() {
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g.BeforeEach(func() {
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if err := rfs.CreateServerFileFromString("source.txt", "test content"); err != nil {
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panic(err)
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}
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atomic.StoreInt64(&fs.diskUsed, int64(utf8.RuneCountInString("test content")))
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})
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g.It("does not delete files outside the root directory", func() {
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err := rfs.CreateServerFileFromString("/../ext-source.txt", "external content")
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err = fs.Delete("../ext-source.txt")
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g.Assert(err).IsNotNil()
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g.Assert(IsErrorCode(err, ErrCodePathResolution)).IsTrue()
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})
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g.It("does not allow the deletion of the root directory", func() {
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err := fs.Delete("/")
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g.Assert(err).IsNotNil()
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g.Assert(err.Error()).Equal("cannot delete root server directory")
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})
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g.It("does not return an error if the target does not exist", func() {
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err := fs.Delete("missing.txt")
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g.Assert(err).IsNil()
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st, err := rfs.StatServerFile("source.txt")
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g.Assert(err).IsNil()
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g.Assert(st.Name()).Equal("source.txt")
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})
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g.It("deletes files and subtracts their size from the disk usage", func() {
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err := fs.Delete("source.txt")
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g.Assert(err).IsNil()
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_, err = rfs.StatServerFile("source.txt")
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g.Assert(err).IsNotNil()
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g.Assert(errors.Is(err, os.ErrNotExist)).IsTrue()
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g.Assert(atomic.LoadInt64(&fs.diskUsed)).Equal(int64(0))
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})
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g.It("deletes all items inside a directory if the directory is deleted", func() {
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sources := []string{
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"foo/source.txt",
|
|
"foo/bar/source.txt",
|
|
"foo/bar/baz/source.txt",
|
|
}
|
|
|
|
err := os.MkdirAll(filepath.Join(rfs.root, "/server/foo/bar/baz"), 0o755)
|
|
g.Assert(err).IsNil()
|
|
|
|
for _, s := range sources {
|
|
err = rfs.CreateServerFileFromString(s, "test content")
|
|
g.Assert(err).IsNil()
|
|
}
|
|
|
|
atomic.StoreInt64(&fs.diskUsed, int64(utf8.RuneCountInString("test content")*3))
|
|
|
|
err = fs.Delete("foo")
|
|
g.Assert(err).IsNil()
|
|
g.Assert(atomic.LoadInt64(&fs.diskUsed)).Equal(int64(0))
|
|
|
|
for _, s := range sources {
|
|
_, err = rfs.StatServerFile(s)
|
|
g.Assert(err).IsNotNil()
|
|
g.Assert(errors.Is(err, os.ErrNotExist)).IsTrue()
|
|
}
|
|
})
|
|
|
|
g.It("deletes a symlink but not it's target within the root directory", func() {
|
|
// Symlink to a file inside the root directory.
|
|
err := os.Symlink(filepath.Join(rfs.root, "server/source.txt"), filepath.Join(rfs.root, "server/symlink.txt"))
|
|
g.Assert(err).IsNil()
|
|
|
|
// Delete the symlink itself.
|
|
err = fs.Delete("symlink.txt")
|
|
g.Assert(err).IsNil()
|
|
|
|
// Ensure the symlink was deleted.
|
|
_, err = os.Lstat(filepath.Join(rfs.root, "server/symlink.txt"))
|
|
g.Assert(err).IsNotNil()
|
|
|
|
// Ensure the symlink target still exists.
|
|
_, err = os.Lstat(filepath.Join(rfs.root, "server/source.txt"))
|
|
g.Assert(err).IsNil()
|
|
})
|
|
|
|
g.It("does not delete files symlinked outside of the root directory", func() {
|
|
// Create a file outside the root directory.
|
|
err := rfs.CreateServerFileFromString("/../source.txt", "test content")
|
|
g.Assert(err).IsNil()
|
|
|
|
// Create a symlink to the file outside the root directory.
|
|
err = os.Symlink(filepath.Join(rfs.root, "source.txt"), filepath.Join(rfs.root, "/server/symlink.txt"))
|
|
g.Assert(err).IsNil()
|
|
|
|
// Delete the symlink. (This should pass as we will delete the symlink itself, not it's target)
|
|
err = fs.Delete("symlink.txt")
|
|
g.Assert(err).IsNil()
|
|
|
|
// Ensure the file outside the root directory still exists.
|
|
_, err = os.Lstat(filepath.Join(rfs.root, "source.txt"))
|
|
g.Assert(err).IsNil()
|
|
})
|
|
|
|
g.It("does not delete files symlinked through a directory outside of the root directory", func() {
|
|
// Create a directory outside the root directory.
|
|
err := os.Mkdir(filepath.Join(rfs.root, "foo"), 0o755)
|
|
g.Assert(err).IsNil()
|
|
|
|
// Create a file inside the directory that is outside the root.
|
|
err = rfs.CreateServerFileFromString("/../foo/source.txt", "test content")
|
|
g.Assert(err).IsNil()
|
|
|
|
// Symlink the directory that is outside the root to a file inside the root.
|
|
err = os.Symlink(filepath.Join(rfs.root, "foo"), filepath.Join(rfs.root, "server/symlink"))
|
|
g.Assert(err).IsNil()
|
|
|
|
// Delete a file inside the symlinked directory.
|
|
err = fs.Delete("symlink/source.txt")
|
|
g.Assert(err).IsNotNil()
|
|
g.Assert(IsErrorCode(err, ErrCodePathResolution)).IsTrue()
|
|
|
|
// Ensure the file outside the root directory still exists.
|
|
_, err = os.Lstat(filepath.Join(rfs.root, "foo/source.txt"))
|
|
g.Assert(err).IsNil()
|
|
})
|
|
|
|
g.It("returns an error when trying to delete a non-existent file symlinked through a directory outside of the root directory", func() {
|
|
// Create a directory outside the root directory.
|
|
err := os.Mkdir(filepath.Join(rfs.root, "foo2"), 0o755)
|
|
g.Assert(err).IsNil()
|
|
|
|
// Symlink the directory that is outside the root to a file inside the root.
|
|
err = os.Symlink(filepath.Join(rfs.root, "foo2"), filepath.Join(rfs.root, "server/symlink"))
|
|
g.Assert(err).IsNil()
|
|
|
|
// Delete a file inside the symlinked directory.
|
|
err = fs.Delete("symlink/source.txt")
|
|
g.Assert(err).IsNotNil()
|
|
g.Assert(IsErrorCode(err, ErrCodePathResolution)).IsTrue()
|
|
})
|
|
|
|
g.AfterEach(func() {
|
|
rfs.reset()
|
|
|
|
atomic.StoreInt64(&fs.diskUsed, 0)
|
|
atomic.StoreInt64(&fs.diskLimit, 0)
|
|
})
|
|
})
|
|
}
|