carddav: implement REPORT addressbook-multiget

carddav/elements.go

@@ -2,6 +2,7 @@ package carddav
 
 import (
 	"encoding/xml"
+	"fmt"
 
 	"github.com/emersion/go-webdav/internal"
 )
@@ -12,6 +13,8 @@ var (
 	addressBookName            = xml.Name{namespace, "addressbook"}
 	addressBookHomeSetName     = xml.Name{namespace, "addressbook-home-set"}
 	addressBookDescriptionName = xml.Name{namespace, "addressbook-description"}
+	addressBookQueryName       = xml.Name{namespace, "addressbook-query"}
+	addressBookMultigetName    = xml.Name{namespace, "addressbook-multiget"}
 )
 
 type addressbookHomeSet struct {
@@ -69,3 +72,24 @@ type addressDataResp struct {
 	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:carddav address-data"`
 	Data    []byte   `xml:",chardata"`
 }
+
+type reportReq struct {
+	Query *addressbookQuery
+	Multiget *addressbookMultiget
+}
+
+func (r *reportReq) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	var v interface{}
+	switch start.Name {
+	case addressBookQueryName:
+		r.Query = &addressbookQuery{}
+		v = r.Query
+	case addressBookMultigetName:
+		r.Multiget = &addressbookMultiget{}
+		v = r.Multiget
+	default:
+		return fmt.Errorf("carddav: unsupported REPORT root %q %q", start.Name.Space, start.Name.Local)
+	}
+
+	return d.DecodeElement(v, &start)
+}

carddav/server.go

@@ -2,6 +2,7 @@ package carddav
 
 import (
 	"encoding/xml"
+	"mime"
 	"net/http"
 
 	"github.com/emersion/go-vcard"
@@ -25,11 +26,73 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	var err error
+	switch r.Method {
+	case "REPORT":
+		err = h.handleReport(w, r)
+	default:
 		b := backend{h.Backend}
 		hh := internal.Handler{&b}
 		hh.ServeHTTP(w, r)
 	}
 
+	if err != nil {
+		internal.ServeError(w, err)
+	}
+}
+
+func (h *Handler) handleReport(w http.ResponseWriter, r *http.Request) error {
+	t, _, _ := mime.ParseMediaType(r.Header.Get("Content-Type"))
+	if t != "application/xml" && t != "text/xml" {
+		return internal.HTTPErrorf(http.StatusBadRequest, "webdav: expected application/xml REPORT request")
+	}
+
+	var report reportReq
+	if err := xml.NewDecoder(r.Body).Decode(&report); err != nil {
+		return &internal.HTTPError{http.StatusBadRequest, err}
+	}
+
+	if report.Query != nil {
+		return h.handleQuery(w, report.Query)
+	} else if report.Multiget != nil {
+		return h.handleMultiget(w, report.Multiget)
+	}
+	return internal.HTTPErrorf(http.StatusBadRequest, "webdav: expected addressbook-query or addressbook-multiget element in REPORT request")
+}
+
+func (h *Handler) handleQuery(w http.ResponseWriter, query *addressbookQuery) error {
+	return nil // TODO
+}
+
+func (h *Handler) handleMultiget(w http.ResponseWriter, multiget *addressbookMultiget) error {
+	var resps []internal.Response
+	for _, href := range multiget.Hrefs {
+		ao, err := h.Backend.GetAddressObject(href)
+		if err != nil {
+			return err // TODO: create internal.Response with error
+		}
+
+		b := backend{h.Backend}
+		propfind := internal.Propfind{
+			Prop: multiget.Prop,
+			// TODO: Allprop, Propnames
+		}
+		resp, err := b.propfindAddressObject(&propfind, ao)
+		if err != nil {
+			return err
+		}
+
+		resps = append(resps, *resp)
+	}
+
+	ms := internal.NewMultistatus(resps...)
+
+	w.Header().Add("Content-Type", "text/xml; charset=\"utf-8\"")
+	w.WriteHeader(http.StatusMultiStatus)
+	w.Write([]byte(xml.Header))
+	return xml.NewEncoder(w).Encode(&ms)
+}
+
 type backend struct {
 	Backend Backend
 }
@@ -124,7 +187,8 @@ func (b *backend) propfindAddressObject(propfind *internal.Propfind, ao *Address
 		internal.GetContentTypeName: func(*internal.RawXMLValue) (interface{}, error) {
 			return &internal.GetContentType{Type: vcard.MIMEType}, nil
 		},
-		// TODO getlastmodified, getetag
+		// TODO: getlastmodified, getetag
+		// TODO: address-data
 	}
 
 	return internal.NewPropfindResponse(ao.Href, propfind, props)

internal/server.go

@@ -37,6 +37,14 @@ func (err *HTTPError) Error() string {
 	}
 }
 
+func ServeError(w http.ResponseWriter, err error) {
+	code := http.StatusInternalServerError
+	if httpErr, ok := err.(*HTTPError); ok {
+		code = httpErr.Code
+	}
+	http.Error(w, err.Error(), code)
+}
+
 type Backend interface {
 	Options(r *http.Request) ([]string, error)
 	HeadGet(w http.ResponseWriter, r *http.Request) error
@@ -86,7 +94,7 @@ func (h *Handler) handleOptions(w http.ResponseWriter, r *http.Request) error {
 }
 
 func (h *Handler) handlePropfind(w http.ResponseWriter, r *http.Request) error {
-	t, _, err := mime.ParseMediaType(r.Header.Get("Content-Type"))
+	t, _, _ := mime.ParseMediaType(r.Header.Get("Content-Type"))
 	if t != "application/xml" && t != "text/xml" {
 		return HTTPErrorf(http.StatusBadRequest, "webdav: expected application/xml PROPFIND request")
 	}
@@ -98,6 +106,7 @@ func (h *Handler) handlePropfind(w http.ResponseWriter, r *http.Request) error {
 
 	depth := DepthInfinity
 	if s := r.Header.Get("Depth"); s != "" {
+		var err error
 		depth, err = ParseDepth(s)
 		if err != nil {
 			return &HTTPError{http.StatusBadRequest, err}
@@ -180,7 +189,7 @@ func NewPropfindResponse(href string, propfind *Propfind, props map[xml.Name]Pro
 			}
 		}
 	} else {
-		return nil, HTTPErrorf(http.StatusBadRequest, "webdav: propfind request missing propname, allprop or prop element")
+		return nil, HTTPErrorf(http.StatusBadRequest, "webdav: request missing propname, allprop or prop element")
 	}
 
 	return resp, nil