Better caldav support (#73)

2019-05-22 17:48:48 +00:00
parent de24fcc2f8
commit 7107d030fc
91 changed files with 7060 additions and 323 deletions
--- a/pkg/routes/caldav/handler.go
+++ b/pkg/routes/caldav/handler.go
@ -0,0 +1,184 @@
+//   Vikunja is a todo-list application to facilitate your life.
+//   Copyright 2019 Vikunja and contributors. All rights reserved.
+//
+//   This program is free software: you can redistribute it and/or modify
+//   it under the terms of the GNU General Public License as published by
+//   the Free Software Foundation, either version 3 of the License, or
+//   (at your option) any later version.
+//
+//   This program is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//   GNU General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public License
+//   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package caldav
+
+import (
+	"bytes"
+	"code.vikunja.io/api/pkg/log"
+	"code.vikunja.io/api/pkg/models"
+	"code.vikunja.io/web/handler"
+	"fmt"
+	"github.com/labstack/echo/v4"
+	"github.com/samedi/caldav-go"
+	"github.com/samedi/caldav-go/lib"
+	"io/ioutil"
+	"reflect"
+	"strconv"
+	"strings"
+)
+
+func getBasicAuthUserFromContext(c echo.Context) (user models.User, err error) {
+	u, is := c.Get("userBasicAuth").(models.User)
+	if !is {
+		return models.User{}, fmt.Errorf("user is not user element, is %s", reflect.TypeOf(c.Get("userBasicAuth")))
+	}
+	return u, nil
+}
+
+// ListHandler returns all tasks from a list
+func ListHandler(c echo.Context) error {
+	listID, err := getIntParam(c, "list")
+	if err != nil {
+		return err
+	}
+
+	u, err := getBasicAuthUserFromContext(c)
+	if err != nil {
+		log.Log.Error(err)
+		return echo.ErrInternalServerError
+	}
+
+	storage := &VikunjaCaldavListStorage{
+		list: &models.List{ID: listID},
+		user: &u,
+	}
+
+	// Try to parse a task from the request payload
+	body, _ := ioutil.ReadAll(c.Request().Body)
+	// Restore the io.ReadCloser to its original state
+	c.Request().Body = ioutil.NopCloser(bytes.NewBuffer(body))
+	// Parse it
+	vtodo := string(body)
+	if vtodo != "" && strings.HasPrefix(vtodo, `BEGIN:VCALENDAR`) {
+		storage.task, err = parseTaskFromVTODO(vtodo)
+		if err != nil {
+			log.Log.Error(err)
+			return echo.ErrInternalServerError
+		}
+	}
+
+	log.Log.Debugf("[CALDAV] Request Body: %v\n", string(body))
+	log.Log.Debugf("[CALDAV] Request Headers: %v\n", c.Request().Header)
+
+	caldav.SetupStorage(storage)
+	caldav.SetupUser("dav/lists")
+	caldav.SetupSupportedComponents([]string{lib.VCALENDAR, lib.VTODO})
+	response := caldav.HandleRequest(c.Request())
+	response.Write(c.Response())
+	return nil
+}
+
+// TaskHandler is the handler which manages updating/deleting a single task
+func TaskHandler(c echo.Context) error {
+	listID, err := getIntParam(c, "list")
+	if err != nil {
+		return err
+	}
+
+	u, err := getBasicAuthUserFromContext(c)
+	if err != nil {
+		log.Log.Error(err)
+		return echo.ErrInternalServerError
+	}
+
+	// Get the task uid
+	taskUID := strings.TrimSuffix(c.Param("task"), ".ics")
+
+	storage := &VikunjaCaldavListStorage{
+		list: &models.List{ID: listID},
+		task: &models.ListTask{UID: taskUID},
+		user: &u,
+	}
+
+	caldav.SetupStorage(storage)
+	response := caldav.HandleRequest(c.Request())
+	response.Write(c.Response())
+	return nil
+}
+
+// PrincipalHandler handles all request to principal resources
+func PrincipalHandler(c echo.Context) error {
+	u, err := getBasicAuthUserFromContext(c)
+	if err != nil {
+		log.Log.Error(err)
+		return echo.ErrInternalServerError
+	}
+
+	storage := &VikunjaCaldavListStorage{
+		user:        &u,
+		isPrincipal: true,
+	}
+
+	// Try to parse a task from the request payload
+	body, _ := ioutil.ReadAll(c.Request().Body)
+	// Restore the io.ReadCloser to its original state
+	c.Request().Body = ioutil.NopCloser(bytes.NewBuffer(body))
+
+	log.Log.Debugf("[CALDAV] Request Body: %v\n", string(body))
+	log.Log.Debugf("[CALDAV] Request Headers: %v\n", c.Request().Header)
+
+	caldav.SetupStorage(storage)
+	caldav.SetupUser("dav/principals/" + u.Username)
+	caldav.SetupSupportedComponents([]string{lib.VCALENDAR, lib.VTODO})
+
+	response := caldav.HandleRequest(c.Request())
+	response.Write(c.Response())
+	return nil
+}
+
+// EntryHandler handles all request to principal resources
+func EntryHandler(c echo.Context) error {
+	u, err := getBasicAuthUserFromContext(c)
+	if err != nil {
+		log.Log.Error(err)
+		return echo.ErrInternalServerError
+	}
+
+	storage := &VikunjaCaldavListStorage{
+		user:    &u,
+		isEntry: true,
+	}
+
+	// Try to parse a task from the request payload
+	body, _ := ioutil.ReadAll(c.Request().Body)
+	// Restore the io.ReadCloser to its original state
+	c.Request().Body = ioutil.NopCloser(bytes.NewBuffer(body))
+
+	log.Log.Debugf("[CALDAV] Request Body: %v\n", string(body))
+	log.Log.Debugf("[CALDAV] Request Headers: %v\n", c.Request().Header)
+
+	caldav.SetupStorage(storage)
+	caldav.SetupUser("dav/principals/" + u.Username)
+	caldav.SetupSupportedComponents([]string{lib.VCALENDAR, lib.VTODO})
+
+	response := caldav.HandleRequest(c.Request())
+	response.Write(c.Response())
+	return nil
+}
+
+func getIntParam(c echo.Context, paramName string) (intParam int64, err error) {
+	param := c.Param(paramName)
+	if param == "" {
+		return 0, nil
+	}
+
+	intParam, err = strconv.ParseInt(param, 10, 64)
+	if err != nil {
+		return 0, handler.HandleHTTPError(err, c)
+	}
+	return
+}