From 6e2cb00008cbf09e556b00f87603797fcaa47e09 Mon Sep 17 00:00:00 2001 From: Christopher Speller Date: Mon, 16 Apr 2018 05:37:14 -0700 Subject: Depenancy upgrades and movign to dep. (#8630) --- vendor/golang.org/x/net/webdav/file.go | 796 --------------------------------- 1 file changed, 796 deletions(-) delete mode 100644 vendor/golang.org/x/net/webdav/file.go (limited to 'vendor/golang.org/x/net/webdav/file.go') diff --git a/vendor/golang.org/x/net/webdav/file.go b/vendor/golang.org/x/net/webdav/file.go deleted file mode 100644 index 748118dd3..000000000 --- a/vendor/golang.org/x/net/webdav/file.go +++ /dev/null @@ -1,796 +0,0 @@ -// Copyright 2014 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package webdav - -import ( - "encoding/xml" - "io" - "net/http" - "os" - "path" - "path/filepath" - "strings" - "sync" - "time" - - "golang.org/x/net/context" -) - -// slashClean is equivalent to but slightly more efficient than -// path.Clean("/" + name). -func slashClean(name string) string { - if name == "" || name[0] != '/' { - name = "/" + name - } - return path.Clean(name) -} - -// A FileSystem implements access to a collection of named files. The elements -// in a file path are separated by slash ('/', U+002F) characters, regardless -// of host operating system convention. -// -// Each method has the same semantics as the os package's function of the same -// name. -// -// Note that the os.Rename documentation says that "OS-specific restrictions -// might apply". In particular, whether or not renaming a file or directory -// overwriting another existing file or directory is an error is OS-dependent. -type FileSystem interface { - Mkdir(ctx context.Context, name string, perm os.FileMode) error - OpenFile(ctx context.Context, name string, flag int, perm os.FileMode) (File, error) - RemoveAll(ctx context.Context, name string) error - Rename(ctx context.Context, oldName, newName string) error - Stat(ctx context.Context, name string) (os.FileInfo, error) -} - -// A File is returned by a FileSystem's OpenFile method and can be served by a -// Handler. -// -// A File may optionally implement the DeadPropsHolder interface, if it can -// load and save dead properties. -type File interface { - http.File - io.Writer -} - -// A Dir implements FileSystem using the native file system restricted to a -// specific directory tree. -// -// While the FileSystem.OpenFile method takes '/'-separated paths, a Dir's -// string value is a filename on the native file system, not a URL, so it is -// separated by filepath.Separator, which isn't necessarily '/'. -// -// An empty Dir is treated as ".". -type Dir string - -func (d Dir) resolve(name string) string { - // This implementation is based on Dir.Open's code in the standard net/http package. - if filepath.Separator != '/' && strings.IndexRune(name, filepath.Separator) >= 0 || - strings.Contains(name, "\x00") { - return "" - } - dir := string(d) - if dir == "" { - dir = "." - } - return filepath.Join(dir, filepath.FromSlash(slashClean(name))) -} - -func (d Dir) Mkdir(ctx context.Context, name string, perm os.FileMode) error { - if name = d.resolve(name); name == "" { - return os.ErrNotExist - } - return os.Mkdir(name, perm) -} - -func (d Dir) OpenFile(ctx context.Context, name string, flag int, perm os.FileMode) (File, error) { - if name = d.resolve(name); name == "" { - return nil, os.ErrNotExist - } - f, err := os.OpenFile(name, flag, perm) - if err != nil { - return nil, err - } - return f, nil -} - -func (d Dir) RemoveAll(ctx context.Context, name string) error { - if name = d.resolve(name); name == "" { - return os.ErrNotExist - } - if name == filepath.Clean(string(d)) { - // Prohibit removing the virtual root directory. - return os.ErrInvalid - } - return os.RemoveAll(name) -} - -func (d Dir) Rename(ctx context.Context, oldName, newName string) error { - if oldName = d.resolve(oldName); oldName == "" { - return os.ErrNotExist - } - if newName = d.resolve(newName); newName == "" { - return os.ErrNotExist - } - if root := filepath.Clean(string(d)); root == oldName || root == newName { - // Prohibit renaming from or to the virtual root directory. - return os.ErrInvalid - } - return os.Rename(oldName, newName) -} - -func (d Dir) Stat(ctx context.Context, name string) (os.FileInfo, error) { - if name = d.resolve(name); name == "" { - return nil, os.ErrNotExist - } - return os.Stat(name) -} - -// NewMemFS returns a new in-memory FileSystem implementation. -func NewMemFS() FileSystem { - return &memFS{ - root: memFSNode{ - children: make(map[string]*memFSNode), - mode: 0660 | os.ModeDir, - modTime: time.Now(), - }, - } -} - -// A memFS implements FileSystem, storing all metadata and actual file data -// in-memory. No limits on filesystem size are used, so it is not recommended -// this be used where the clients are untrusted. -// -// Concurrent access is permitted. The tree structure is protected by a mutex, -// and each node's contents and metadata are protected by a per-node mutex. -// -// TODO: Enforce file permissions. -type memFS struct { - mu sync.Mutex - root memFSNode -} - -// TODO: clean up and rationalize the walk/find code. - -// walk walks the directory tree for the fullname, calling f at each step. If f -// returns an error, the walk will be aborted and return that same error. -// -// dir is the directory at that step, frag is the name fragment, and final is -// whether it is the final step. For example, walking "/foo/bar/x" will result -// in 3 calls to f: -// - "/", "foo", false -// - "/foo/", "bar", false -// - "/foo/bar/", "x", true -// The frag argument will be empty only if dir is the root node and the walk -// ends at that root node. -func (fs *memFS) walk(op, fullname string, f func(dir *memFSNode, frag string, final bool) error) error { - original := fullname - fullname = slashClean(fullname) - - // Strip any leading "/"s to make fullname a relative path, as the walk - // starts at fs.root. - if fullname[0] == '/' { - fullname = fullname[1:] - } - dir := &fs.root - - for { - frag, remaining := fullname, "" - i := strings.IndexRune(fullname, '/') - final := i < 0 - if !final { - frag, remaining = fullname[:i], fullname[i+1:] - } - if frag == "" && dir != &fs.root { - panic("webdav: empty path fragment for a clean path") - } - if err := f(dir, frag, final); err != nil { - return &os.PathError{ - Op: op, - Path: original, - Err: err, - } - } - if final { - break - } - child := dir.children[frag] - if child == nil { - return &os.PathError{ - Op: op, - Path: original, - Err: os.ErrNotExist, - } - } - if !child.mode.IsDir() { - return &os.PathError{ - Op: op, - Path: original, - Err: os.ErrInvalid, - } - } - dir, fullname = child, remaining - } - return nil -} - -// find returns the parent of the named node and the relative name fragment -// from the parent to the child. For example, if finding "/foo/bar/baz" then -// parent will be the node for "/foo/bar" and frag will be "baz". -// -// If the fullname names the root node, then parent, frag and err will be zero. -// -// find returns an error if the parent does not already exist or the parent -// isn't a directory, but it will not return an error per se if the child does -// not already exist. The error returned is either nil or an *os.PathError -// whose Op is op. -func (fs *memFS) find(op, fullname string) (parent *memFSNode, frag string, err error) { - err = fs.walk(op, fullname, func(parent0 *memFSNode, frag0 string, final bool) error { - if !final { - return nil - } - if frag0 != "" { - parent, frag = parent0, frag0 - } - return nil - }) - return parent, frag, err -} - -func (fs *memFS) Mkdir(ctx context.Context, name string, perm os.FileMode) error { - fs.mu.Lock() - defer fs.mu.Unlock() - - dir, frag, err := fs.find("mkdir", name) - if err != nil { - return err - } - if dir == nil { - // We can't create the root. - return os.ErrInvalid - } - if _, ok := dir.children[frag]; ok { - return os.ErrExist - } - dir.children[frag] = &memFSNode{ - children: make(map[string]*memFSNode), - mode: perm.Perm() | os.ModeDir, - modTime: time.Now(), - } - return nil -} - -func (fs *memFS) OpenFile(ctx context.Context, name string, flag int, perm os.FileMode) (File, error) { - fs.mu.Lock() - defer fs.mu.Unlock() - - dir, frag, err := fs.find("open", name) - if err != nil { - return nil, err - } - var n *memFSNode - if dir == nil { - // We're opening the root. - if flag&(os.O_WRONLY|os.O_RDWR) != 0 { - return nil, os.ErrPermission - } - n, frag = &fs.root, "/" - - } else { - n = dir.children[frag] - if flag&(os.O_SYNC|os.O_APPEND) != 0 { - // memFile doesn't support these flags yet. - return nil, os.ErrInvalid - } - if flag&os.O_CREATE != 0 { - if flag&os.O_EXCL != 0 && n != nil { - return nil, os.ErrExist - } - if n == nil { - n = &memFSNode{ - mode: perm.Perm(), - } - dir.children[frag] = n - } - } - if n == nil { - return nil, os.ErrNotExist - } - if flag&(os.O_WRONLY|os.O_RDWR) != 0 && flag&os.O_TRUNC != 0 { - n.mu.Lock() - n.data = nil - n.mu.Unlock() - } - } - - children := make([]os.FileInfo, 0, len(n.children)) - for cName, c := range n.children { - children = append(children, c.stat(cName)) - } - return &memFile{ - n: n, - nameSnapshot: frag, - childrenSnapshot: children, - }, nil -} - -func (fs *memFS) RemoveAll(ctx context.Context, name string) error { - fs.mu.Lock() - defer fs.mu.Unlock() - - dir, frag, err := fs.find("remove", name) - if err != nil { - return err - } - if dir == nil { - // We can't remove the root. - return os.ErrInvalid - } - delete(dir.children, frag) - return nil -} - -func (fs *memFS) Rename(ctx context.Context, oldName, newName string) error { - fs.mu.Lock() - defer fs.mu.Unlock() - - oldName = slashClean(oldName) - newName = slashClean(newName) - if oldName == newName { - return nil - } - if strings.HasPrefix(newName, oldName+"/") { - // We can't rename oldName to be a sub-directory of itself. - return os.ErrInvalid - } - - oDir, oFrag, err := fs.find("rename", oldName) - if err != nil { - return err - } - if oDir == nil { - // We can't rename from the root. - return os.ErrInvalid - } - - nDir, nFrag, err := fs.find("rename", newName) - if err != nil { - return err - } - if nDir == nil { - // We can't rename to the root. - return os.ErrInvalid - } - - oNode, ok := oDir.children[oFrag] - if !ok { - return os.ErrNotExist - } - if oNode.children != nil { - if nNode, ok := nDir.children[nFrag]; ok { - if nNode.children == nil { - return errNotADirectory - } - if len(nNode.children) != 0 { - return errDirectoryNotEmpty - } - } - } - delete(oDir.children, oFrag) - nDir.children[nFrag] = oNode - return nil -} - -func (fs *memFS) Stat(ctx context.Context, name string) (os.FileInfo, error) { - fs.mu.Lock() - defer fs.mu.Unlock() - - dir, frag, err := fs.find("stat", name) - if err != nil { - return nil, err - } - if dir == nil { - // We're stat'ting the root. - return fs.root.stat("/"), nil - } - if n, ok := dir.children[frag]; ok { - return n.stat(path.Base(name)), nil - } - return nil, os.ErrNotExist -} - -// A memFSNode represents a single entry in the in-memory filesystem and also -// implements os.FileInfo. -type memFSNode struct { - // children is protected by memFS.mu. - children map[string]*memFSNode - - mu sync.Mutex - data []byte - mode os.FileMode - modTime time.Time - deadProps map[xml.Name]Property -} - -func (n *memFSNode) stat(name string) *memFileInfo { - n.mu.Lock() - defer n.mu.Unlock() - return &memFileInfo{ - name: name, - size: int64(len(n.data)), - mode: n.mode, - modTime: n.modTime, - } -} - -func (n *memFSNode) DeadProps() (map[xml.Name]Property, error) { - n.mu.Lock() - defer n.mu.Unlock() - if len(n.deadProps) == 0 { - return nil, nil - } - ret := make(map[xml.Name]Property, len(n.deadProps)) - for k, v := range n.deadProps { - ret[k] = v - } - return ret, nil -} - -func (n *memFSNode) Patch(patches []Proppatch) ([]Propstat, error) { - n.mu.Lock() - defer n.mu.Unlock() - pstat := Propstat{Status: http.StatusOK} - for _, patch := range patches { - for _, p := range patch.Props { - pstat.Props = append(pstat.Props, Property{XMLName: p.XMLName}) - if patch.Remove { - delete(n.deadProps, p.XMLName) - continue - } - if n.deadProps == nil { - n.deadProps = map[xml.Name]Property{} - } - n.deadProps[p.XMLName] = p - } - } - return []Propstat{pstat}, nil -} - -type memFileInfo struct { - name string - size int64 - mode os.FileMode - modTime time.Time -} - -func (f *memFileInfo) Name() string { return f.name } -func (f *memFileInfo) Size() int64 { return f.size } -func (f *memFileInfo) Mode() os.FileMode { return f.mode } -func (f *memFileInfo) ModTime() time.Time { return f.modTime } -func (f *memFileInfo) IsDir() bool { return f.mode.IsDir() } -func (f *memFileInfo) Sys() interface{} { return nil } - -// A memFile is a File implementation for a memFSNode. It is a per-file (not -// per-node) read/write position, and a snapshot of the memFS' tree structure -// (a node's name and children) for that node. -type memFile struct { - n *memFSNode - nameSnapshot string - childrenSnapshot []os.FileInfo - // pos is protected by n.mu. - pos int -} - -// A *memFile implements the optional DeadPropsHolder interface. -var _ DeadPropsHolder = (*memFile)(nil) - -func (f *memFile) DeadProps() (map[xml.Name]Property, error) { return f.n.DeadProps() } -func (f *memFile) Patch(patches []Proppatch) ([]Propstat, error) { return f.n.Patch(patches) } - -func (f *memFile) Close() error { - return nil -} - -func (f *memFile) Read(p []byte) (int, error) { - f.n.mu.Lock() - defer f.n.mu.Unlock() - if f.n.mode.IsDir() { - return 0, os.ErrInvalid - } - if f.pos >= len(f.n.data) { - return 0, io.EOF - } - n := copy(p, f.n.data[f.pos:]) - f.pos += n - return n, nil -} - -func (f *memFile) Readdir(count int) ([]os.FileInfo, error) { - f.n.mu.Lock() - defer f.n.mu.Unlock() - if !f.n.mode.IsDir() { - return nil, os.ErrInvalid - } - old := f.pos - if old >= len(f.childrenSnapshot) { - // The os.File Readdir docs say that at the end of a directory, - // the error is io.EOF if count > 0 and nil if count <= 0. - if count > 0 { - return nil, io.EOF - } - return nil, nil - } - if count > 0 { - f.pos += count - if f.pos > len(f.childrenSnapshot) { - f.pos = len(f.childrenSnapshot) - } - } else { - f.pos = len(f.childrenSnapshot) - old = 0 - } - return f.childrenSnapshot[old:f.pos], nil -} - -func (f *memFile) Seek(offset int64, whence int) (int64, error) { - f.n.mu.Lock() - defer f.n.mu.Unlock() - npos := f.pos - // TODO: How to handle offsets greater than the size of system int? - switch whence { - case os.SEEK_SET: - npos = int(offset) - case os.SEEK_CUR: - npos += int(offset) - case os.SEEK_END: - npos = len(f.n.data) + int(offset) - default: - npos = -1 - } - if npos < 0 { - return 0, os.ErrInvalid - } - f.pos = npos - return int64(f.pos), nil -} - -func (f *memFile) Stat() (os.FileInfo, error) { - return f.n.stat(f.nameSnapshot), nil -} - -func (f *memFile) Write(p []byte) (int, error) { - lenp := len(p) - f.n.mu.Lock() - defer f.n.mu.Unlock() - - if f.n.mode.IsDir() { - return 0, os.ErrInvalid - } - if f.pos < len(f.n.data) { - n := copy(f.n.data[f.pos:], p) - f.pos += n - p = p[n:] - } else if f.pos > len(f.n.data) { - // Write permits the creation of holes, if we've seek'ed past the - // existing end of file. - if f.pos <= cap(f.n.data) { - oldLen := len(f.n.data) - f.n.data = f.n.data[:f.pos] - hole := f.n.data[oldLen:] - for i := range hole { - hole[i] = 0 - } - } else { - d := make([]byte, f.pos, f.pos+len(p)) - copy(d, f.n.data) - f.n.data = d - } - } - - if len(p) > 0 { - // We should only get here if f.pos == len(f.n.data). - f.n.data = append(f.n.data, p...) - f.pos = len(f.n.data) - } - f.n.modTime = time.Now() - return lenp, nil -} - -// moveFiles moves files and/or directories from src to dst. -// -// See section 9.9.4 for when various HTTP status codes apply. -func moveFiles(ctx context.Context, fs FileSystem, src, dst string, overwrite bool) (status int, err error) { - created := false - if _, err := fs.Stat(ctx, dst); err != nil { - if !os.IsNotExist(err) { - return http.StatusForbidden, err - } - created = true - } else if overwrite { - // Section 9.9.3 says that "If a resource exists at the destination - // and the Overwrite header is "T", then prior to performing the move, - // the server must perform a DELETE with "Depth: infinity" on the - // destination resource. - if err := fs.RemoveAll(ctx, dst); err != nil { - return http.StatusForbidden, err - } - } else { - return http.StatusPreconditionFailed, os.ErrExist - } - if err := fs.Rename(ctx, src, dst); err != nil { - return http.StatusForbidden, err - } - if created { - return http.StatusCreated, nil - } - return http.StatusNoContent, nil -} - -func copyProps(dst, src File) error { - d, ok := dst.(DeadPropsHolder) - if !ok { - return nil - } - s, ok := src.(DeadPropsHolder) - if !ok { - return nil - } - m, err := s.DeadProps() - if err != nil { - return err - } - props := make([]Property, 0, len(m)) - for _, prop := range m { - props = append(props, prop) - } - _, err = d.Patch([]Proppatch{{Props: props}}) - return err -} - -// copyFiles copies files and/or directories from src to dst. -// -// See section 9.8.5 for when various HTTP status codes apply. -func copyFiles(ctx context.Context, fs FileSystem, src, dst string, overwrite bool, depth int, recursion int) (status int, err error) { - if recursion == 1000 { - return http.StatusInternalServerError, errRecursionTooDeep - } - recursion++ - - // TODO: section 9.8.3 says that "Note that an infinite-depth COPY of /A/ - // into /A/B/ could lead to infinite recursion if not handled correctly." - - srcFile, err := fs.OpenFile(ctx, src, os.O_RDONLY, 0) - if err != nil { - if os.IsNotExist(err) { - return http.StatusNotFound, err - } - return http.StatusInternalServerError, err - } - defer srcFile.Close() - srcStat, err := srcFile.Stat() - if err != nil { - if os.IsNotExist(err) { - return http.StatusNotFound, err - } - return http.StatusInternalServerError, err - } - srcPerm := srcStat.Mode() & os.ModePerm - - created := false - if _, err := fs.Stat(ctx, dst); err != nil { - if os.IsNotExist(err) { - created = true - } else { - return http.StatusForbidden, err - } - } else { - if !overwrite { - return http.StatusPreconditionFailed, os.ErrExist - } - if err := fs.RemoveAll(ctx, dst); err != nil && !os.IsNotExist(err) { - return http.StatusForbidden, err - } - } - - if srcStat.IsDir() { - if err := fs.Mkdir(ctx, dst, srcPerm); err != nil { - return http.StatusForbidden, err - } - if depth == infiniteDepth { - children, err := srcFile.Readdir(-1) - if err != nil { - return http.StatusForbidden, err - } - for _, c := range children { - name := c.Name() - s := path.Join(src, name) - d := path.Join(dst, name) - cStatus, cErr := copyFiles(ctx, fs, s, d, overwrite, depth, recursion) - if cErr != nil { - // TODO: MultiStatus. - return cStatus, cErr - } - } - } - - } else { - dstFile, err := fs.OpenFile(ctx, dst, os.O_RDWR|os.O_CREATE|os.O_TRUNC, srcPerm) - if err != nil { - if os.IsNotExist(err) { - return http.StatusConflict, err - } - return http.StatusForbidden, err - - } - _, copyErr := io.Copy(dstFile, srcFile) - propsErr := copyProps(dstFile, srcFile) - closeErr := dstFile.Close() - if copyErr != nil { - return http.StatusInternalServerError, copyErr - } - if propsErr != nil { - return http.StatusInternalServerError, propsErr - } - if closeErr != nil { - return http.StatusInternalServerError, closeErr - } - } - - if created { - return http.StatusCreated, nil - } - return http.StatusNoContent, nil -} - -// walkFS traverses filesystem fs starting at name up to depth levels. -// -// Allowed values for depth are 0, 1 or infiniteDepth. For each visited node, -// walkFS calls walkFn. If a visited file system node is a directory and -// walkFn returns filepath.SkipDir, walkFS will skip traversal of this node. -func walkFS(ctx context.Context, fs FileSystem, depth int, name string, info os.FileInfo, walkFn filepath.WalkFunc) error { - // This implementation is based on Walk's code in the standard path/filepath package. - err := walkFn(name, info, nil) - if err != nil { - if info.IsDir() && err == filepath.SkipDir { - return nil - } - return err - } - if !info.IsDir() || depth == 0 { - return nil - } - if depth == 1 { - depth = 0 - } - - // Read directory names. - f, err := fs.OpenFile(ctx, name, os.O_RDONLY, 0) - if err != nil { - return walkFn(name, info, err) - } - fileInfos, err := f.Readdir(0) - f.Close() - if err != nil { - return walkFn(name, info, err) - } - - for _, fileInfo := range fileInfos { - filename := path.Join(name, fileInfo.Name()) - fileInfo, err := fs.Stat(ctx, filename) - if err != nil { - if err := walkFn(filename, fileInfo, err); err != nil && err != filepath.SkipDir { - return err - } - } else { - err = walkFS(ctx, fs, depth, filename, fileInfo, walkFn) - if err != nil { - if !fileInfo.IsDir() || err != filepath.SkipDir { - return err - } - } - } - } - return nil -} -- cgit v1.2.3-1-g7c22