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caddy-hugo2/http.go

327 lines
7.2 KiB

package caddyhugo
import (
"encoding/base64"
"errors"
"fmt"
"io"
"net/http"
"os"
"path"
"path/filepath"
"strings"
"git.stephensearles.com/stephen/caddy-hugo2/assets"
"github.com/caddyserver/caddy/v2/modules/caddyhttp"
"github.com/spf13/afero"
)
func (ch *CaddyHugo) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error {
if !ch.Match(r) {
p := path.Join(ch.Dir, "public", r.URL.Path)
http.ServeFile(w, r, p)
return nil
}
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if ch.Comments != nil && strings.HasSuffix(r.URL.Path, "/comments") {
docName := docNameFromCommentRequest(r)
err := ch.Comments.ServeComments(docName, w, r)
if err != nil {
return fmt.Errorf("couldn't load comments:", err)
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}
return nil
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}
if r.URL.Path == "/login" {
return ch.commentsLogin(r, w)
}
if strings.HasPrefix(r.URL.Path, "/hugo/publish") {
err := ch.Publish()
if err != nil {
return err
}
http.Redirect(w, r, "/", http.StatusFound)
return nil
}
if strings.HasPrefix(r.URL.Path, "/hugo/simplemde.css") {
w.Write(assets.MustAsset("simplemde/dist/simplemde.min.css"))
return nil
}
if strings.HasPrefix(r.URL.Path, "/hugo/simplemde.js") {
w.Write(assets.MustAsset("simplemde/debug/simplemde.js"))
return nil
}
if strings.HasPrefix(r.URL.Path, "/hugo/vue.js") {
w.Write(assets.MustAsset("js/vue.js"))
return nil
}
if strings.HasPrefix(r.URL.Path, "/hugo/moment.js") {
w.Write(assets.MustAsset("js/moment.js"))
return nil
}
if strings.HasPrefix(r.URL.Path, "/hugo/font-awesome.css") {
w.Write(assets.MustAsset("css/font-awesome.min.css"))
return nil
}
if strings.HasPrefix(r.URL.Path, "/hugo/admin") {
return ch.Admin().ServeHTTP(w, r)
}
if strings.HasPrefix(r.URL.Path, "/hugo/author") {
return ch.AuthorHome().ServeHTTP(w, r)
}
if strings.HasPrefix(r.URL.Path, "/hugo/edit/") {
return ch.Edit().ServeHTTP(w, r)
}
if strings.HasPrefix(r.URL.Path, "/hugo/draft/") {
return ch.serveDraft(w, r)
}
if strings.HasPrefix(r.URL.Path, "/hugo/media") {
return ch.serveMediaPage(w, r)
}
if strings.HasPrefix(r.URL.Path, "/hugo/upload") {
return ch.uploadMedia(w, r)
}
if strings.HasPrefix(r.URL.Path, "/media/") {
return ch.serveMedia(w, r)
}
if strings.HasPrefix(r.URL.Path, "/hugo/fs/") {
printTree(afero.NewOsFs(), w, ch.Dir)
return nil
}
return next.ServeHTTP(w, r)
}
func (ch *CaddyHugo) ServeNewContent(w http.ResponseWriter, r *http.Request) error {
name := r.FormValue("name")
ctype := r.FormValue("type")
filename, err := ch.NewContent(name, ctype)
if err != nil {
fmt.Println("error creating new content:", err)
return err
}
// serve redirect
http.Redirect(w, r, filepath.Join("/hugo/edit/", "content", filename), http.StatusFound)
return nil
}
func (ch *CaddyHugo) Auth(r *http.Request) bool {
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// this is handled upstream by the caddy configuration
return true
}
func (ch *CaddyHugo) Match(r *http.Request) bool {
if strings.HasPrefix(r.URL.Path, "/media/") {
return true
}
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if strings.HasSuffix(r.URL.Path, "/comments") {
return true
}
if r.URL.Path == "/login" {
return true
}
if r.URL.Path == "/hugo" {
return true
}
return strings.HasPrefix(r.URL.Path, "/hugo/")
}
func (ch *CaddyHugo) Admin() caddyhttp.Handler {
return caddyhttp.HandlerFunc(func(w http.ResponseWriter, r *http.Request) error {
err := ch.adminTmpl.Execute(w, ch.TmplData(r, nil))
if err != nil {
fmt.Println(err)
return err
}
return nil
})
}
func (ch *CaddyHugo) AuthorHome() caddyhttp.Handler {
return caddyhttp.HandlerFunc(func(w http.ResponseWriter, r *http.Request) error {
td := ch.TmplData(r, nil)
err := ch.authorTmpl.Execute(w, td)
if err != nil {
fmt.Println(err)
return err
}
return nil
})
}
func (ch *CaddyHugo) Edit() caddyhttp.Handler {
return caddyhttp.HandlerFunc(func(w http.ResponseWriter, r *http.Request) error {
if r.URL.Path == "/hugo/edit/new" {
return ch.ServeNewContent(w, r)
}
if r.Header.Get("Upgrade") == "websocket" {
return ch.DeltaWebsocket(w, r)
}
doc, err := ch.editSession(docNameFromEditRequest(r))
if err != nil {
fmt.Println(err)
http.Error(w, err.Error(), http.StatusNotFound)
return err
}
err = ch.editTmpl.Execute(w, ch.TmplData(r, doc))
if err != nil {
fmt.Println(err)
return err
}
return nil
})
}
func (ch *CaddyHugo) serveDraft(w http.ResponseWriter, r *http.Request) error {
pathSegments := strings.SplitN(r.URL.Path, "/", 5)
if len(pathSegments) < 4 {
return errors.New("not found")
}
encoded := pathSegments[3]
nameBytes, err := base64.RawURLEncoding.DecodeString(encoded)
if err != nil {
return errors.New("not found")
}
name := string(nameBytes)
ch.mtx.Lock()
defer ch.mtx.Unlock()
docref, ok := ch.docs[ch.docFilename(name)]
if !ok {
return fmt.Errorf("draft not found")
}
r.URL.Path = strings.ToLower(r.URL.Path)
prefix := "/hugo/draft/" + encoded
r.URL.Path = path.Join("public", r.URL.Path[len(prefix):])
page := ch.HugoSites.GetContentPage(ch.docFilename(name))
if page == nil {
fmt.Fprintf(w, "can't find %q to display a draft", name)
return fmt.Errorf("draft not found")
}
r.URL.Path = page.RelPermalink()
http.FileServer(aferoHTTP{afero.NewBasePathFs(docref.tmpfs, path.Join(ch.Dir, "public"))}).ServeHTTP(w, r)
return nil
}
func printTree(fs afero.Fs, w io.Writer, dir string) {
const (
Line = " │ "
Tab = " "
Elbow = " └─"
Tee = " ├─"
)
wd, _ := os.Getwd()
fmt.Fprintln(w, wd)
if dir == "" {
dir = "/"
}
openDirs := map[string]bool{}
lastFiles := map[string]string{}
afero.Walk(fs, dir, filepath.WalkFunc(func(p string, info os.FileInfo, err error) error {
if strings.HasPrefix(p, "./") {
p = p[2:]
}
openDirs[filepath.Dir(p)] = true
lastFiles[filepath.Dir(p)] = filepath.Base(p)
return nil
}))
afero.Walk(fs, dir, filepath.WalkFunc(func(p string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if strings.HasPrefix(p, "./") {
p = p[2:]
}
if filepath.Base(p)[0] == '.' && info.IsDir() {
return filepath.SkipDir
}
entry := Tee
if lastFiles[filepath.Dir(p)] == filepath.Base(p) {
openDirs[filepath.Dir(p)] = false
entry = Elbow
}
indent := ""
dirs := strings.Split(p, string(filepath.Separator))
dirs = dirs[:len(dirs)-1]
for i := range dirs {
if openDirs[filepath.Join(dirs[:i]...)] {
indent += Line
} else {
indent += Tab
}
}
fmt.Fprintf(w, "%s%s %s (%s)\n", indent, entry, filepath.Base(p), p)
return nil
}))
}
type aferoHTTP struct {
afero.Fs
}
func (a aferoHTTP) Open(name string) (http.File, error) {
af, err := a.Fs.Open(name)
if os.IsExist(err) {
err = os.ErrExist
}
if os.IsNotExist(err) {
err = os.ErrNotExist
}
return af, err
}
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func (ch *CaddyHugo) commentsLogin(r *http.Request, w http.ResponseWriter) error {
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if ch.Comments == nil {
return nil
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}
_, ok := ch.Comments.User(r)
if !ok {
w.Header().Set("WWW-Authenticate", `Basic realm="Log in with your name and the password. Ask Dan or Stephen for the password."`)
w.WriteHeader(401)
fmt.Fprintf(w, "<html><body>Log in with your name and the password. Ask Dan or Stephen for the password. <a href=%q>go back</a></body></html>", r.Referer())
return nil
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}
http.Redirect(w, r, r.Referer(), http.StatusFound)
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return nil
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}