mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-07 20:30:36 -05:00
174 lines
5.4 KiB
Go
174 lines
5.4 KiB
Go
// Copyright 2017 The Hugo Authors. All rights reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package hugolib
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"html/template"
|
|
"io"
|
|
"path/filepath"
|
|
"runtime"
|
|
"strings"
|
|
|
|
jww "github.com/spf13/jwalterweatherman"
|
|
|
|
"github.com/spf13/hugo/helpers"
|
|
)
|
|
|
|
const (
|
|
alias = "<!DOCTYPE html><html><head><title>{{ .Permalink }}</title><link rel=\"canonical\" href=\"{{ .Permalink }}\"/><meta http-equiv=\"content-type\" content=\"text/html; charset=utf-8\" /><meta http-equiv=\"refresh\" content=\"0; url={{ .Permalink }}\" /></head></html>"
|
|
aliasXHtml = "<!DOCTYPE html><html xmlns=\"http://www.w3.org/1999/xhtml\"><head><title>{{ .Permalink }}</title><link rel=\"canonical\" href=\"{{ .Permalink }}\"/><meta http-equiv=\"content-type\" content=\"text/html; charset=utf-8\" /><meta http-equiv=\"refresh\" content=\"0; url={{ .Permalink }}\" /></head></html>"
|
|
)
|
|
|
|
var defaultAliasTemplates *template.Template
|
|
|
|
func init() {
|
|
defaultAliasTemplates = template.New("")
|
|
template.Must(defaultAliasTemplates.New("alias").Parse(alias))
|
|
template.Must(defaultAliasTemplates.New("alias-xhtml").Parse(aliasXHtml))
|
|
}
|
|
|
|
type aliasHandler struct {
|
|
Templates *template.Template
|
|
log *jww.Notepad
|
|
allowRoot bool
|
|
}
|
|
|
|
func newAliasHandler(t *template.Template, l *jww.Notepad, allowRoot bool) aliasHandler {
|
|
return aliasHandler{t, l, allowRoot}
|
|
}
|
|
|
|
func (a aliasHandler) renderAlias(isXHTML bool, permalink string, page *Page) (io.Reader, error) {
|
|
t := "alias"
|
|
if isXHTML {
|
|
t = "alias-xhtml"
|
|
}
|
|
|
|
template := defaultAliasTemplates
|
|
if a.Templates != nil {
|
|
template = a.Templates
|
|
t = "alias.html"
|
|
}
|
|
|
|
data := struct {
|
|
Permalink string
|
|
Page *Page
|
|
}{
|
|
permalink,
|
|
page,
|
|
}
|
|
|
|
buffer := new(bytes.Buffer)
|
|
err := template.ExecuteTemplate(buffer, t, data)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return buffer, nil
|
|
}
|
|
|
|
func (s *Site) writeDestAlias(path, permalink string, p *Page) (err error) {
|
|
return s.publishDestAlias(false, path, permalink, p)
|
|
}
|
|
|
|
func (s *Site) publishDestAlias(allowRoot bool, path, permalink string, p *Page) (err error) {
|
|
|
|
handler := newAliasHandler(s.Tmpl.Lookup("alias.html"), s.Log, allowRoot)
|
|
|
|
isXHTML := strings.HasSuffix(path, ".xhtml")
|
|
|
|
s.Log.DEBUG.Println("creating alias:", path, "redirecting to", permalink)
|
|
|
|
targetPath, err := handler.targetPathAlias(path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
aliasContent, err := handler.renderAlias(isXHTML, permalink, p)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return s.publish(targetPath, aliasContent)
|
|
|
|
}
|
|
|
|
func (a aliasHandler) targetPathAlias(src string) (string, error) {
|
|
originalAlias := src
|
|
if len(src) <= 0 {
|
|
return "", fmt.Errorf("Alias \"\" is an empty string")
|
|
}
|
|
|
|
alias := filepath.Clean(src)
|
|
components := strings.Split(alias, helpers.FilePathSeparator)
|
|
|
|
if !a.allowRoot && alias == helpers.FilePathSeparator {
|
|
return "", fmt.Errorf("Alias \"%s\" resolves to website root directory", originalAlias)
|
|
}
|
|
|
|
// Validate against directory traversal
|
|
if components[0] == ".." {
|
|
return "", fmt.Errorf("Alias \"%s\" traverses outside the website root directory", originalAlias)
|
|
}
|
|
|
|
// Handle Windows file and directory naming restrictions
|
|
// See "Naming Files, Paths, and Namespaces" on MSDN
|
|
// https://msdn.microsoft.com/en-us/library/aa365247%28v=VS.85%29.aspx?f=255&MSPPError=-2147217396
|
|
msgs := []string{}
|
|
reservedNames := []string{"CON", "PRN", "AUX", "NUL", "COM0", "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9", "LPT0", "LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9"}
|
|
|
|
if strings.ContainsAny(alias, ":*?\"<>|") {
|
|
msgs = append(msgs, fmt.Sprintf("Alias \"%s\" contains invalid characters on Windows: : * ? \" < > |", originalAlias))
|
|
}
|
|
for _, ch := range alias {
|
|
if ch < ' ' {
|
|
msgs = append(msgs, fmt.Sprintf("Alias \"%s\" contains ASCII control code (0x00 to 0x1F), invalid on Windows: : * ? \" < > |", originalAlias))
|
|
continue
|
|
}
|
|
}
|
|
for _, comp := range components {
|
|
if strings.HasSuffix(comp, " ") || strings.HasSuffix(comp, ".") {
|
|
msgs = append(msgs, fmt.Sprintf("Alias \"%s\" contains component with a trailing space or period, problematic on Windows", originalAlias))
|
|
}
|
|
for _, r := range reservedNames {
|
|
if comp == r {
|
|
msgs = append(msgs, fmt.Sprintf("Alias \"%s\" contains component with reserved name \"%s\" on Windows", originalAlias, r))
|
|
}
|
|
}
|
|
}
|
|
if len(msgs) > 0 {
|
|
if runtime.GOOS == "windows" {
|
|
for _, m := range msgs {
|
|
a.log.ERROR.Println(m)
|
|
}
|
|
return "", fmt.Errorf("Cannot create \"%s\": Windows filename restriction", originalAlias)
|
|
}
|
|
for _, m := range msgs {
|
|
a.log.WARN.Println(m)
|
|
}
|
|
}
|
|
|
|
// Add the final touch
|
|
alias = strings.TrimPrefix(alias, helpers.FilePathSeparator)
|
|
if strings.HasSuffix(alias, helpers.FilePathSeparator) {
|
|
alias = alias + "index.html"
|
|
} else if !strings.HasSuffix(alias, ".html") {
|
|
alias = alias + helpers.FilePathSeparator + "index.html"
|
|
}
|
|
if originalAlias != alias {
|
|
a.log.INFO.Printf("Alias \"%s\" translated to \"%s\"\n", originalAlias, alias)
|
|
}
|
|
|
|
return alias, nil
|
|
}
|