feature (webdav): shared link is a fully fledge webdav server

server/common/log.go

@@ -1,10 +1,14 @@
 package common
 
 import (
-	"fmt"
-	"io"
-	"io/ioutil"
 	"time"
+	"log"
+)
+
+const (
+	LOG_INFO = "INFO"
+	LOG_WARNING = "WARNING"
+	LOG_ERROR = "ERROR"
 )
 
 type LogEntry struct {
@@ -23,7 +27,34 @@ type LogEntry struct {
 	Backend    string    `json:"backend"`
 }
 
-func Debug_reader(r io.Reader) {
-	a, _ := ioutil.ReadAll(r)
-	fmt.Println("> DEBUG:", string(a))
+func Log(ctx *App, str string, level string){
+	if ctx.Config.Log.Enable == false {
+		return
+	}
+
+	shouldDisplay := func(r string, l string) bool {
+		levels := []string{"DEBUG", "INFO", "WARNING", "ERROR"}
+
+		configLevel := -1
+		currentLevel := 0
+
+		for i:=0; i <= len(levels); i++ {
+			if levels[i] == l {
+				currentLevel = i
+			}
+			if levels[i] == r {
+				configLevel = i
+				break
+			}
+		}
+
+		if currentLevel <= configLevel {
+			return true
+		}
+		return false
+	}(ctx.Config.Log.Level, level)
+
+	if shouldDisplay {
+		log.Printf("%s %s\n", level, str)
+	}
 }

server/ctrl/static.go

@@ -0,0 +1,60 @@
+package ctrl
+
+import (
+	. "github.com/mickael-kerjean/nuage/server/common"
+	"mime"
+	"net/http"
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+)
+
+func StaticHandler(_path string, ctx App) http.Handler {
+	return http.HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
+		header := res.Header()
+		header.Set("Content-Type", mime.TypeByExtension(filepath.Ext(req.URL.Path)))
+		header.Set("Cache-Control", "max-age=2592000")
+		SecureHeader(&header)
+
+		if strings.HasSuffix(req.URL.Path, "/") {
+			http.NotFound(res, req)
+			return
+		}
+
+		absPath := ctx.Helpers.AbsolutePath(_path)
+		fsrv := http.FileServer(http.Dir(absPath))
+		_, err := os.Open(path.Join(absPath, req.URL.Path+".gz"))
+		if err == nil && strings.Contains(req.Header.Get("Accept-Encoding"), "gzip") {
+			res.Header().Set("Content-Encoding", "gzip")
+			req.URL.Path += ".gz"
+		}
+		fsrv.ServeHTTP(res, req)
+	})
+}
+
+func DefaultHandler(_path string, ctx App) http.Handler {
+	return http.HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
+		if req.Method != "GET" {
+			http.Error(res, "Invalid request method.", 405)
+			return
+		}
+
+		header := res.Header()
+		header.Set("Content-Type", "text/html")
+		SecureHeader(&header)
+
+		p := _path
+		if _, err := os.Open(path.Join(ctx.Config.Runtime.Dirname, p+".gz")); err == nil && strings.Contains(req.Header.Get("Accept-Encoding"), "gzip") {
+			res.Header().Set("Content-Encoding", "gzip")
+			p += ".gz"
+		}
+		http.ServeFile(res, req, ctx.Helpers.AbsolutePath(p))
+	})
+}
+
+func SecureHeader(header *http.Header) {
+	header.Set("X-XSS-Protection", "1; mode=block")
+	header.Set("X-Content-Type-Options", "nosniff")
+	header.Set("X-Frame-Options", "DENY")
+}

server/ctrl/webdav.go

@@ -0,0 +1,36 @@
+package ctrl
+
+import (
+	"net/http"
+	"log"
+	. "github.com/mickael-kerjean/nuage/server/common"
+	"github.com/mickael-kerjean/nuage/server/model"
+	"golang.org/x/net/webdav"
+	"github.com/mickael-kerjean/mux"
+	"strings"
+)
+
+func WebdavHandler(ctx App, res http.ResponseWriter, req *http.Request) {
+	accept := req.Header.Get("Accept")
+	if strings.HasPrefix(accept, "text/html") {
+		DefaultHandler("./data/public/index.html", ctx).ServeHTTP(res, req)
+		return
+	}
+	if ctx.Backend == nil {
+		http.NotFound(res, req)
+		return
+	}
+
+	s := model.Share{ Id: mux.Vars(req)["id"] }
+	log.Println("> webdav: "+ s.Id)	
+
+	h := &webdav.Handler{
+		Prefix: "/s/",// + s.Id,
+		FileSystem: model.NewWebdavFs(ctx.Backend),
+		LockSystem: webdav.NewMemLS(),
+		Logger: func(r *http.Request, err error) {
+			Log(&ctx, "Webdav", "INFO")
+		},
+	}
+	h.ServeHTTP(res, req)
+}

server/model/webdav.go

@@ -0,0 +1,50 @@
+package model
+
+import (
+	"os"
+	"context"
+	. "github.com/mickael-kerjean/nuage/server/common"
+	"golang.org/x/net/webdav"
+	//"log"
+)
+
+type WebdavFs struct {
+	backend IBackend
+}
+
+func NewWebdavFs(b IBackend) WebdavFs {
+	return WebdavFs{backend: b}
+}
+
+func (w WebdavFs) Mkdir(ctx context.Context, name string, perm os.FileMode) error {
+	return w.backend.Mkdir(name)
+}
+
+func (w WebdavFs) OpenFile(ctx context.Context, name string, flag int, perm os.FileMode) (webdav.File, error) {
+	f, err := os.OpenFile(name, flag, perm)
+	if err != nil {
+		return nil, err
+	}
+	return f, nil
+}
+
+func (w WebdavFs) RemoveAll(ctx context.Context, name string) error {
+	return w.backend.Rm(name)
+}
+
+func (w WebdavFs) Rename(ctx context.Context, oldName, newName string) error {
+	return w.backend.Mv(oldName, newName)
+}
+
+func (w WebdavFs) Stat(ctx context.Context, name string) (os.FileInfo, error) {
+	files, err := w.backend.Ls(name)
+	if err != nil {
+		return nil, err
+	}
+	for i:=0; i < len(files); i++ {
+		if files[i].Name() == "test" {
+			return files[i], nil
+		}
+	}
+	return nil, os.ErrNotExist
+}

server/router/index.go

@@ -34,11 +34,14 @@ func Init(a *App) *http.Server {
 	share.HandleFunc("/{id}", APIHandler(ShareUpsert, *a)).Methods("POST")
 	share.HandleFunc("/{id}", APIHandler(ShareDelete, *a)).Methods("DELETE")
 	share.HandleFunc("/{id}/proof", APIHandler(ShareVerifyProof, *a)).Methods("POST")
+
+	// WEBDAV
+	r.PathPrefix("/s/{id}").Handler(APIHandler(WebdavHandler, *a))
 	
 	// APP
 	r.HandleFunc("/api/config", CtxInjector(ConfigHandler, *a)).Methods("GET")
 	r.PathPrefix("/assets").Handler(StaticHandler("./data/public/", *a)).Methods("GET")
-	r.NotFoundHandler = DefaultHandler("./data/public/index.html", *a)
+	r.PathPrefix("/").Handler(DefaultHandler("./data/public/index.html", *a)).Methods("GET")
 
 	srv := &http.Server{
 		Addr:    ":" + strconv.Itoa(a.Config.General.Port),

server/router/static.go

@@ -35,11 +35,6 @@ func StaticHandler(_path string, ctx App) http.Handler {
 
 func DefaultHandler(_path string, ctx App) http.Handler {
 	return http.HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
-		if req.Method != "GET" {
-			http.Error(res, "Invalid request method.", 405)
-			return
-		}
-
 		header := res.Header()
 		header.Set("Content-Type", "text/html")
 		SecureHeader(&header)

server/services/webdav.go

@@ -0,0 +1,28 @@
+package services
+
+// type Webdav struct {
+// }
+
+// func NewWebdav() Webdav {
+// 	return Webdav{}
+// }
+
+// func (w Webdav) Mkdir(ctx context.Context, name string, perm os.FileMode) error {
+// 	return nil
+// }
+
+// func (w Webdav) OpenFile(ctx context.Context, name string, flag int, perm os.FileMode) (File, error) {
+// 	return File{}, nil
+// }
+
+// func (w Webdav) RemoveAll(ctx context.Context, name string) error {
+// 	return nil
+// }
+
+// func (w Webdav) Rename(ctx context.Context, oldName, newName string) error {
+// 	return nil
+// }
+
+// func (w Webdav) Stat(ctx context.Context, name string) (os.FileInfo, error) {	
+// 	return nil, nil
+// }