add more proxy routes for thumbnails

changelog/unreleased/fix-thumbnails-dav.md

@@ -0,0 +1,6 @@
+Bugfix: Thumbnails for `/dav/xxx?preview=1` requests
+
+We've added the thumbnail rendering for `/dav/xxx?preview=1`, `/remote.php/webdav/{relative path}?preview=1` and `/webdav/{relative path}?preview=1` requests, which was previously not supported because of missing routes. It now returns the same thumbnails as for
+`/remote.php/dav/xxx?preview=1`.
+
+https://github.com/owncloud/ocis/pull/3567

extensions/proxy/pkg/config/config.go

@@ -45,15 +45,15 @@ type Policy struct {
 
 // Route defines forwarding routes
 type Route struct {
-	Type RouteType `yaml:"type"`
+	Type RouteType `yaml:"type,omitempty"`
 	// Method optionally limits the route to this HTTP method
-	Method   string `yaml:"method"`
-	Endpoint string `yaml:"endpoint"`
+	Method   string `yaml:"method,omitempty"`
+	Endpoint string `yaml:"endpoint,omitempty"`
 	// Backend is a static URL to forward the request to
-	Backend string `yaml:"backend"`
+	Backend string `yaml:"backend,omitempty"`
 	// Service name to look up in the registry
-	Service     string `yaml:"service"`
-	ApacheVHost bool   `yaml:"apache_vhost"`
+	Service     string `yaml:"service,omitempty"`
+	ApacheVHost bool   `yaml:"apache_vhost,omitempty"`
 }
 
 // RouteType defines the type of a route

extensions/proxy/pkg/config/defaults/defaultconfig.go

@@ -106,6 +106,16 @@ func DefaultPolicies() []config.Policy {
 					Endpoint: "/remote.php/dav/",
 					Backend:  "http://localhost:9115", // TODO use registry?
 				},
+				{
+					Type:     config.QueryRoute,
+					Endpoint: "/dav/?preview=1",
+					Backend:  "http://localhost:9115",
+				},
+				{
+					Type:     config.QueryRoute,
+					Endpoint: "/webdav/?preview=1",
+					Backend:  "http://localhost:9115",
+				},
 				{
 					Endpoint: "/remote.php/",
 					Service:  "ocdav",

extensions/proxy/pkg/middleware/basic_auth.go

@@ -115,6 +115,7 @@ func (m basicAuth) isPublicLink(req *http.Request) bool {
 	}
 
 	publicPaths := []string{
+		"/dav/public-files/",
 		"/remote.php/dav/public-files/",
 		"/remote.php/ocs/apps/files_sharing/api/v1/tokeninfo/unprotected",
 		"/ocs/v1.php/cloud/capabilities",

extensions/webdav/pkg/constants/constants.go

@@ -0,0 +1,8 @@
+package constants
+
+type contextKey int
+
+const (
+	ContextKeyID contextKey = iota
+	ContextKeyPath
+)

extensions/webdav/pkg/dav/requests/thumbnail.go

@@ -7,9 +7,10 @@ import (
 	"net/url"
 	"path/filepath"
 	"strconv"
-	"strings"
 
 	"github.com/go-chi/chi/v5"
+
+	"github.com/owncloud/ocis/v2/extensions/webdav/pkg/constants"
 )
 
 const (
@@ -39,12 +40,20 @@ type ThumbnailRequest struct {
 
 // ParseThumbnailRequest extracts all required parameters from a http request.
 func ParseThumbnailRequest(r *http.Request) (*ThumbnailRequest, error) {
-	fp, id, err := extractFilePath(r)
-	if err != nil {
-		return nil, err
+	ctx := r.Context()
+
+	fp := ctx.Value(constants.ContextKeyPath).(string)
+	if fp == "" {
+		return nil, errors.New("invalid file path")
+	}
+
+	id := ""
+	v := ctx.Value(constants.ContextKeyID)
+	if v != nil {
+		id = v.(string)
 	}
-	q := r.URL.Query()
 
+	q := r.URL.Query()
 	width, height, err := parseDimensions(q)
 	if err != nil {
 		return nil, err
@@ -61,32 +70,6 @@ func ParseThumbnailRequest(r *http.Request) (*ThumbnailRequest, error) {
 	}, nil
 }
 
-// the url looks as followed
-//
-// /remote.php/dav/files/<user>/<filepath>
-//
-// User and filepath are dynamic and filepath can contain slashes
-// So using the URLParam function is not possible.
-func extractFilePath(r *http.Request) (string, string, error) {
-	id := chi.URLParam(r, "id")
-	id, err := url.QueryUnescape(id)
-	if err != nil {
-		return "", "", errors.New("could not unescape user")
-	}
-	if id != "" {
-		parts := strings.SplitN(r.URL.Path, id, 2)
-		return parts[1], id, nil
-	}
-
-	// This is for public links
-	token := chi.URLParam(r, "token")
-	if token != "" {
-		parts := strings.SplitN(r.URL.Path, token, 2)
-		return parts[1], "", nil
-	}
-	return "", "", errors.New("could not extract file path")
-}
-
 func parseDimensions(q url.Values) (int64, int64, error) {
 	width, err := parseDimension(q.Get("x"), "width", DefaultWidth)
 	if err != nil {

extensions/webdav/pkg/service/v0/service.go

@@ -1,9 +1,11 @@
 package svc
 
 import (
+	"context"
 	"encoding/xml"
 	"io"
 	"net/http"
+	"net/url"
 	"path"
 	"path/filepath"
 	"strings"
@@ -13,16 +15,16 @@ import (
 	rpcv1beta1 "github.com/cs3org/go-cs3apis/cs3/rpc/v1beta1"
 	"github.com/cs3org/reva/v2/pkg/rgrpc/todo/pool"
 	"github.com/cs3org/reva/v2/pkg/storage/utils/templates"
+	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/render"
 	merrors "go-micro.dev/v4/errors"
 	"google.golang.org/grpc/metadata"
 
-	"github.com/owncloud/ocis/v2/ocis-pkg/log"
-	"github.com/owncloud/ocis/v2/ocis-pkg/service/grpc"
-
-	"github.com/go-chi/chi/v5"
 	"github.com/owncloud/ocis/v2/extensions/webdav/pkg/config"
+	"github.com/owncloud/ocis/v2/extensions/webdav/pkg/constants"
 	"github.com/owncloud/ocis/v2/extensions/webdav/pkg/dav/requests"
+	"github.com/owncloud/ocis/v2/ocis-pkg/log"
+	"github.com/owncloud/ocis/v2/ocis-pkg/service/grpc"
 	thumbnailsmsg "github.com/owncloud/ocis/v2/protogen/gen/ocis/messages/thumbnails/v0"
 	searchsvc "github.com/owncloud/ocis/v2/protogen/gen/ocis/services/search/v0"
 	thumbnailssvc "github.com/owncloud/ocis/v2/protogen/gen/ocis/services/thumbnails/v0"
@@ -73,10 +75,32 @@ func NewService(opts ...Option) (Service, error) {
 	}
 
 	m.Route(options.Config.HTTP.Root, func(r chi.Router) {
-		r.Get("/remote.php/dav/spaces/{id}/*", svc.SpacesThumbnail)
-		r.Get("/remote.php/dav/files/{id}/*", svc.Thumbnail)
-		r.Get("/remote.php/dav/public-files/{token}/*", svc.PublicThumbnail)
-		r.Head("/remote.php/dav/public-files/{token}/*", svc.PublicThumbnailHead)
+
+		r.Group(func(r chi.Router) {
+			r.Use(svc.DavUserContext())
+
+			r.Get("/remote.php/dav/spaces/{id}/*", svc.SpacesThumbnail)
+			r.Get("/dav/spaces/{id}/*", svc.SpacesThumbnail)
+
+			r.Get("/remote.php/dav/files/{id}/*", svc.Thumbnail)
+			r.Get("/dav/files/{id}/*", svc.Thumbnail)
+		})
+
+		r.Group(func(r chi.Router) {
+			r.Use(svc.DavPublicContext())
+
+			r.Head("/remote.php/dav/public-files/{token}/*", svc.PublicThumbnailHead)
+			r.Head("/dav/public-files/{token}/*", svc.PublicThumbnailHead)
+
+			r.Get("/remote.php/dav/public-files/{token}/*", svc.PublicThumbnail)
+			r.Get("/dav/public-files/{token}/*", svc.PublicThumbnail)
+		})
+
+		r.Group(func(r chi.Router) {
+			r.Use(svc.WebDAVContext())
+			r.Get("/remote.php/webdav/*", svc.Thumbnail)
+			r.Get("/webdav/*", svc.Thumbnail)
+		})
 
 		// r.MethodFunc("REPORT", "/remote.php/dav/files/{id}/*", svc.Search)
 
@@ -114,6 +138,67 @@ func (g Webdav) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	g.mux.ServeHTTP(w, r)
 }
 
+func (g Webdav) DavUserContext() func(next http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			ctx := r.Context()
+			filePath := r.URL.Path
+
+			id := chi.URLParam(r, "id")
+			id, err := url.QueryUnescape(id)
+			if err == nil && id != "" {
+				ctx = context.WithValue(ctx, constants.ContextKeyID, id)
+			}
+
+			if id != "" {
+				filePath = strings.TrimPrefix(filePath, path.Join("/remote.php/dav/spaces", id)+"/")
+				filePath = strings.TrimPrefix(filePath, path.Join("/dav/spaces", id)+"/")
+
+				filePath = strings.TrimPrefix(filePath, path.Join("/remote.php/dav/files", id)+"/")
+				filePath = strings.TrimPrefix(filePath, path.Join("/dav/files", id)+"/")
+			}
+
+			ctx = context.WithValue(ctx, constants.ContextKeyPath, filePath)
+
+			next.ServeHTTP(w, r.WithContext(ctx))
+
+		})
+	}
+}
+
+func (g Webdav) DavPublicContext() func(next http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			ctx := r.Context()
+			filePath := r.URL.Path
+
+			if token := chi.URLParam(r, "token"); token != "" {
+				filePath = strings.TrimPrefix(filePath, path.Join("/remote.php/dav/public-files", token)+"/")
+				filePath = strings.TrimPrefix(filePath, path.Join("/dav/public-files", token)+"/")
+			}
+			ctx = context.WithValue(ctx, constants.ContextKeyPath, filePath)
+
+			next.ServeHTTP(w, r.WithContext(ctx))
+
+		})
+	}
+}
+func (g Webdav) WebDAVContext() func(next http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+
+			filePath := r.URL.Path
+			filePath = strings.TrimPrefix(filePath, "/remote.php")
+			filePath = strings.TrimPrefix(filePath, "/webdav/")
+
+			ctx := context.WithValue(r.Context(), constants.ContextKeyPath, filePath)
+
+			next.ServeHTTP(w, r.WithContext(ctx))
+
+		})
+	}
+}
+
 // SpacesThumbnail is the endpoint for retrieving thumbnails inside of spaces.
 func (g Webdav) SpacesThumbnail(w http.ResponseWriter, r *http.Request) {
 	tr, err := requests.ParseThumbnailRequest(r)
@@ -166,18 +251,36 @@ func (g Webdav) Thumbnail(w http.ResponseWriter, r *http.Request) {
 	}
 
 	t := r.Header.Get(TokenHeader)
-	ctx := metadata.AppendToOutgoingContext(r.Context(), TokenHeader, t)
-	userRes, err := g.revaClient.GetUserByClaim(ctx, &userv1beta1.GetUserByClaimRequest{
-		Claim: "username",
-		Value: tr.Identifier,
-	})
-	if err != nil || userRes.Status.Code != rpcv1beta1.Code_CODE_OK {
-		g.log.Error().Err(err).Msg("could not get user")
-		renderError(w, r, errInternalError("could not get user"))
-		return
+
+	var user *userv1beta1.User
+
+	if tr.Identifier == "" {
+		// look up user from token via WhoAmI
+		userRes, err := g.revaClient.WhoAmI(r.Context(), &gatewayv1beta1.WhoAmIRequest{
+			Token: t,
+		})
+		if err != nil || userRes.Status.Code != rpcv1beta1.Code_CODE_OK {
+			g.log.Error().Err(err).Msg("could not get user")
+			renderError(w, r, errInternalError("could not get user"))
+			return
+		}
+		user = userRes.GetUser()
+	} else {
+		// look up user from URL via GetUserByClaim
+		ctx := metadata.AppendToOutgoingContext(r.Context(), TokenHeader, t)
+		userRes, err := g.revaClient.GetUserByClaim(ctx, &userv1beta1.GetUserByClaimRequest{
+			Claim: "username",
+			Value: tr.Identifier,
+		})
+		if err != nil || userRes.Status.Code != rpcv1beta1.Code_CODE_OK {
+			g.log.Error().Err(err).Msg("could not get user")
+			renderError(w, r, errInternalError("could not get user"))
+			return
+		}
+		user = userRes.GetUser()
 	}
 
-	fullPath := filepath.Join(templates.WithUser(userRes.User, g.config.WebdavNamespace), tr.Filepath)
+	fullPath := filepath.Join(templates.WithUser(user, g.config.WebdavNamespace), tr.Filepath)
 	rsp, err := g.thumbnailsClient.GetThumbnail(r.Context(), &thumbnailssvc.GetThumbnailRequest{
 		Filepath:      strings.TrimLeft(tr.Filepath, "/"),
 		ThumbnailType: extensionToThumbnailType(strings.TrimLeft(tr.Extension, ".")),