mirror of
https://github.com/caddyserver/caddy.git
synced 2024-11-29 20:24:11 +08:00
282 lines
7.1 KiB
Go
282 lines
7.1 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package fileserver
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import (
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"net/url"
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"os"
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"path"
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"sort"
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"strconv"
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"strings"
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"time"
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"github.com/caddyserver/caddy/v2"
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"github.com/dustin/go-humanize"
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)
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func (fsrv *FileServer) directoryListing(files []os.FileInfo, canGoUp bool, root, urlPath string, repl *caddy.Replacer) (browseTemplateContext, error) {
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filesToHide := fsrv.transformHidePaths(repl)
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var dirCount, fileCount int
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fileInfos := []fileInfo{}
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for _, f := range files {
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name := f.Name()
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if fileHidden(name, filesToHide) {
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continue
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}
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isDir := f.IsDir() || isSymlinkTargetDir(f, root, urlPath)
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u := url.URL{Path: url.PathEscape(name)}
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// add the slash after the escape of path to avoid escaping the slash as well
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if isDir {
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u.Path += "/"
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dirCount++
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} else {
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fileCount++
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}
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fileIsSymlink := isSymlink(f)
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size := f.Size()
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if fileIsSymlink {
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info, err := os.Stat(name)
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if err != nil {
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return browseTemplateContext{}, err
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}
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size = info.Size()
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}
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fileInfos = append(fileInfos, fileInfo{
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IsDir: isDir,
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IsSymlink: fileIsSymlink,
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Name: name,
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Size: size,
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URL: u.String(),
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ModTime: f.ModTime().UTC(),
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Mode: f.Mode(),
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})
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}
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return browseTemplateContext{
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Name: path.Base(urlPath),
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Path: urlPath,
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CanGoUp: canGoUp,
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Items: fileInfos,
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NumDirs: dirCount,
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NumFiles: fileCount,
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}, nil
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}
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// browseTemplateContext provides the template context for directory listings.
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type browseTemplateContext struct {
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// The name of the directory (the last element of the path).
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Name string `json:"name"`
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// The full path of the request.
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Path string `json:"path"`
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// Whether the parent directory is browseable.
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CanGoUp bool `json:"can_go_up"`
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// The items (files and folders) in the path.
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Items []fileInfo `json:"items,omitempty"`
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// If ≠0 then Items starting from that many elements.
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Offset int `json:"offset,omitempty"`
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// If ≠0 then Items have been limited to that many elements.
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Limit int `json:"limit,omitempty"`
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// The number of directories in the listing.
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NumDirs int `json:"num_dirs"`
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// The number of files (items that aren't directories) in the listing.
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NumFiles int `json:"num_files"`
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// Sort column used
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Sort string `json:"sort,omitempty"`
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// Sorting order
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Order string `json:"order,omitempty"`
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}
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// Breadcrumbs returns l.Path where every element maps
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// the link to the text to display.
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func (l browseTemplateContext) Breadcrumbs() []crumb {
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if len(l.Path) == 0 {
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return []crumb{}
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}
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// skip trailing slash
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lpath := l.Path
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if lpath[len(lpath)-1] == '/' {
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lpath = lpath[:len(lpath)-1]
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}
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parts := strings.Split(lpath, "/")
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result := make([]crumb, len(parts))
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for i, p := range parts {
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if i == 0 && p == "" {
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p = "/"
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}
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lnk := strings.Repeat("../", len(parts)-i-1)
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result[i] = crumb{Link: lnk, Text: p}
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}
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return result
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}
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func (l *browseTemplateContext) applySortAndLimit(sortParam, orderParam, limitParam string, offsetParam string) {
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l.Sort = sortParam
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l.Order = orderParam
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if l.Order == "desc" {
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switch l.Sort {
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case sortByName:
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sort.Sort(sort.Reverse(byName(*l)))
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case sortByNameDirFirst:
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sort.Sort(sort.Reverse(byNameDirFirst(*l)))
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case sortBySize:
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sort.Sort(sort.Reverse(bySize(*l)))
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case sortByTime:
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sort.Sort(sort.Reverse(byTime(*l)))
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}
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} else {
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switch l.Sort {
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case sortByName:
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sort.Sort(byName(*l))
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case sortByNameDirFirst:
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sort.Sort(byNameDirFirst(*l))
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case sortBySize:
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sort.Sort(bySize(*l))
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case sortByTime:
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sort.Sort(byTime(*l))
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}
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}
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if offsetParam != "" {
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offset, _ := strconv.Atoi(offsetParam)
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if offset > 0 && offset <= len(l.Items) {
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l.Items = l.Items[offset:]
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l.Offset = offset
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}
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}
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if limitParam != "" {
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limit, _ := strconv.Atoi(limitParam)
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if limit > 0 && limit <= len(l.Items) {
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l.Items = l.Items[:limit]
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l.Limit = limit
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}
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}
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}
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// crumb represents part of a breadcrumb menu,
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// pairing a link with the text to display.
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type crumb struct {
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Link, Text string
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}
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// fileInfo contains serializable information
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// about a file or directory.
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type fileInfo struct {
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Name string `json:"name"`
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Size int64 `json:"size"`
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URL string `json:"url"`
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ModTime time.Time `json:"mod_time"`
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Mode os.FileMode `json:"mode"`
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IsDir bool `json:"is_dir"`
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IsSymlink bool `json:"is_symlink"`
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}
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// HumanSize returns the size of the file as a
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// human-readable string in IEC format (i.e.
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// power of 2 or base 1024).
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func (fi fileInfo) HumanSize() string {
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return humanize.IBytes(uint64(fi.Size))
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}
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// HumanModTime returns the modified time of the file
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// as a human-readable string given by format.
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func (fi fileInfo) HumanModTime(format string) string {
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return fi.ModTime.Format(format)
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}
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type (
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byName browseTemplateContext
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byNameDirFirst browseTemplateContext
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bySize browseTemplateContext
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byTime browseTemplateContext
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)
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func (l byName) Len() int { return len(l.Items) }
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func (l byName) Swap(i, j int) { l.Items[i], l.Items[j] = l.Items[j], l.Items[i] }
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func (l byName) Less(i, j int) bool {
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return strings.ToLower(l.Items[i].Name) < strings.ToLower(l.Items[j].Name)
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}
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func (l byNameDirFirst) Len() int { return len(l.Items) }
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func (l byNameDirFirst) Swap(i, j int) { l.Items[i], l.Items[j] = l.Items[j], l.Items[i] }
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func (l byNameDirFirst) Less(i, j int) bool {
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// sort by name if both are dir or file
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if l.Items[i].IsDir == l.Items[j].IsDir {
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return strings.ToLower(l.Items[i].Name) < strings.ToLower(l.Items[j].Name)
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}
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// sort dir ahead of file
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return l.Items[i].IsDir
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}
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func (l bySize) Len() int { return len(l.Items) }
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func (l bySize) Swap(i, j int) { l.Items[i], l.Items[j] = l.Items[j], l.Items[i] }
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func (l bySize) Less(i, j int) bool {
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const directoryOffset = -1 << 31 // = -math.MinInt32
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iSize, jSize := l.Items[i].Size, l.Items[j].Size
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// directory sizes depend on the file system; to
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// provide a consistent experience, put them up front
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// and sort them by name
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if l.Items[i].IsDir {
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iSize = directoryOffset
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}
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if l.Items[j].IsDir {
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jSize = directoryOffset
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}
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if l.Items[i].IsDir && l.Items[j].IsDir {
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return strings.ToLower(l.Items[i].Name) < strings.ToLower(l.Items[j].Name)
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}
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return iSize < jSize
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}
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func (l byTime) Len() int { return len(l.Items) }
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func (l byTime) Swap(i, j int) { l.Items[i], l.Items[j] = l.Items[j], l.Items[i] }
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func (l byTime) Less(i, j int) bool { return l.Items[i].ModTime.Before(l.Items[j].ModTime) }
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const (
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sortByName = "name"
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sortByNameDirFirst = "namedirfirst"
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sortBySize = "size"
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sortByTime = "time"
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)
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