harbor/api/user.go

/*
   Copyright (c) 2016 VMware, Inc. All Rights Reserved.
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

package api

import (
	"fmt"
	"net/http"
	"strconv"

	"github.com/vmware/harbor/dao"
	"github.com/vmware/harbor/models"
	"github.com/vmware/harbor/utils/log"
)

// UserAPI handles request to /api/users/{}
type UserAPI struct {
	BaseAPI
	currentUserID int
	userID        int
}

type userReq struct {
	UserName string `json:"username"`
	Password string `json:"password"`
	Realname string `json:"realname"`
	Email    string `json:"email"`
	Comment  string `json:"comment"`
}

const userNameMaxLen int = 20
const passwordMaxLen int = 20
const realNameMaxLen int = 20
const commentsMaxLen int = 20

// Prepare validates the URL and parms
func (ua *UserAPI) Prepare() {

	if ua.Ctx.Input.IsPost() {
		return
	}

	ua.currentUserID = ua.ValidateUser()
	id := ua.Ctx.Input.Param(":id")
	if id == "current" {
		ua.userID = ua.currentUserID
	} else if len(id) > 0 {
		var err error
		ua.userID, err = strconv.Atoi(id)
		if err != nil {
			log.Errorf("Invalid user id, error: %v", err)
			ua.CustomAbort(http.StatusBadRequest, "Invalid user Id")
		}
		userQuery := models.User{UserID: ua.userID}
		u, err := dao.GetUser(userQuery)
		if err != nil {
			log.Errorf("Error occurred in GetUser, error: %v", err)
			ua.CustomAbort(http.StatusInternalServerError, "Internal error.")
		}
		if u == nil {
			log.Errorf("User with Id: %d does not exist", ua.userID)
			ua.CustomAbort(http.StatusNotFound, "")
		}
	}
}

// Get ...
func (ua *UserAPI) Get() {
	exist, err := dao.IsAdminRole(ua.currentUserID)
	if err != nil {
		log.Errorf("Error occurred in IsAdminRole, error: %v", err)
		ua.CustomAbort(http.StatusInternalServerError, "Internal error.")
	}

	if ua.userID == 0 { //list users
		if !exist {
			log.Errorf("Current user, id: %d does not have admin role, can not list users", ua.currentUserID)
			ua.RenderError(http.StatusForbidden, "User does not have admin role")
			return
		}
		username := ua.GetString("username")
		userQuery := models.User{}
		if len(username) > 0 {
			userQuery.Username = "%" + username + "%"
		}
		userList, err := dao.ListUsers(userQuery)
		if err != nil {
			log.Errorf("Failed to get data from database, error: %v", err)
			ua.RenderError(http.StatusInternalServerError, "Failed to query from database")
			return
		}
		ua.Data["json"] = userList

	} else if ua.userID == ua.currentUserID || exist {
		userQuery := models.User{UserID: ua.userID}
		u, err := dao.GetUser(userQuery)
		if err != nil {
			log.Errorf("Error occurred in GetUser, error: %v", err)
			ua.CustomAbort(http.StatusInternalServerError, "Internal error.")
		}
		ua.Data["json"] = u
	} else {
		log.Errorf("Current user, id: %d does not have admin role, can not view other user's detail", ua.currentUserID)
		ua.RenderError(http.StatusForbidden, "User does not have admin role")
		return
	}
	ua.ServeJSON()
}

// Put ...
func (ua *UserAPI) Put() { //currently only for toggle admin, so no request body
	exist, err := dao.IsAdminRole(ua.currentUserID)
	if err != nil {
		log.Errorf("Error occurred in IsAdminRole, error: %v", err)
		ua.CustomAbort(http.StatusInternalServerError, "Internal error.")
	}
	if !exist {
		log.Warningf("current user, id: %d does not have admin role, can not update other user's role", ua.currentUserID)
		ua.RenderError(http.StatusForbidden, "User does not have admin role")
		return
	}
	userQuery := models.User{UserID: ua.userID}
	dao.ToggleUserAdminRole(userQuery)
}

// Post ...
func (ua *UserAPI) Post() {
	var req userReq
	ua.DecodeJSONReq(&req)

	err := validateUserReq(req)
	if err != nil {
		log.Errorf("Invalid user request, error: %v", err)
		ua.RenderError(http.StatusBadRequest, "Invalid request for creating user")
		return
	}

	user := models.User{Username: req.UserName, Email: req.Email, Realname: req.Realname, Password: req.Password, Comment: req.Comment}
	exist, err := dao.UserExists(user, "email")
	if err != nil {
		log.Errorf("Error occurred in UserExists: %v", err)
	}
	if exist {
		ua.RenderError(http.StatusConflict, "")
		return
	}

	userID, err := dao.Register(user)
	if err != nil {
		log.Errorf("Error occurred in Register: %v", err)
		ua.RenderError(http.StatusInternalServerError, "Internal error.")
		return
	}
	if userID == 0 {
		log.Errorf("Error happened on registing new user in db.")
		ua.RenderError(http.StatusInternalServerError, "Internal error.")
	}

}

// Delete ...
func (ua *UserAPI) Delete() {
	exist, err := dao.IsAdminRole(ua.currentUserID)
	if err != nil {
		log.Errorf("Error occurred in IsAdminRole, error: %v", err)
		ua.CustomAbort(http.StatusInternalServerError, "Internal error.")
	}
	if !exist {
		log.Warningf("current user, id: %d does not have admin role, can not remove user", ua.currentUserID)
		ua.RenderError(http.StatusForbidden, "User does not have admin role")
		return
	}
	err = dao.DeleteUser(ua.userID)
	if err != nil {
		log.Errorf("Failed to delete data from database, error: %v", err)
		ua.RenderError(http.StatusInternalServerError, "Failed to delete User")
		return
	}
}

func validateUserReq(req userReq) error {
	userName := req.UserName
	if len(userName) == 0 {
		return fmt.Errorf("User name can not be empty")
	}
	if len(userName) > userNameMaxLen {
		return fmt.Errorf("User name is too long")
	}

	password := req.Password
	if len(password) == 0 {
		return fmt.Errorf("Password can not be empty")
	}
	if len(password) >= passwordMaxLen {
		return fmt.Errorf("Password can is too long")
	}

	realName := req.Realname
	if len(realName) == 0 {
		return fmt.Errorf("Real name can not be empty")
	}
	if len(realName) >= realNameMaxLen {
		return fmt.Errorf("Real name is too long")
	}

	email := req.Email
	if len(email) == 0 {
		return fmt.Errorf("Email can not be empty")
	}

	return nil
}