main.go

//Copyright ©2021 Matthew R Kasun mkasun@nusak.ca

//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 main

import (
	"fmt"
	"html/template"
	"log"
	"net/http"
	_ "net/http/pprof"
	"os"
	"time"

	"github.com/gin-contrib/sessions"
	"github.com/gin-contrib/sessions/memstore"
	"github.com/gin-gonic/gin"
	controller "github.com/gravitl/netmaker/controllers"
	"github.com/gravitl/netmaker/database"
	"github.com/gravitl/netmaker/models"
	"github.com/gravitl/netmaker/servercfg"
)

func init() {
	backend = os.Getenv("BACKEND")
	if len(backend) == 0 {
		backend = "https://api.nusak.ca/"
	}
	authorization = os.Getenv("MASTERKEY")
	if len(authorization) == 0 {
		authorization = "secretkey"
	}
	fmt.Println("Env Updated Set")
}

func main() {
	go func() {
		log.Println(http.ListenAndServe("localhost:6060", nil))
	}()
	router := SetupRouter()
	router.Run(":8080")
}

func SetupRouter() *gin.Engine {
	funcMap := template.FuncMap{
		"printTimestamp":   PrintTimestamp,
		"wrapRelayNetwork": WrapRelayNetwork,
	}
	fmt.Println("using database: ", servercfg.GetDB())
	if err := database.InitializeDatabase(); err != nil {
		log.Fatal("Error connecting to Database:\n", err)
	}
	router := gin.Default()
	store := memstore.NewStore([]byte("secret"))

	router.Use(sessions.Sessions("netmaker", store))
	//router.LoadHTMLGlob("html/*")
	templates := template.Must(template.New("").Funcs(funcMap).ParseGlob("html/*"))
	router.SetHTMLTemplate(templates)
	router.Static("images", "./images")
	router.StaticFile("favicon.ico", "./images/favicon.png")
	router.POST("/newuser", NewUser)
	router.POST("/login", ProcessLogin)
	//use  authorization middleware
	private := router.Group("/", AuthRequired)
	{
		//router.Use(AuthRequired)
		private.GET("/", DisplayLanding)
		//network handlers
		private.POST("/create_network", CreateNetwork)
		private.POST("/delete_network", DeleteNetwork)
		private.POST("/edit_network", EditNetwork)
		private.POST("/update_network", UpdateNetwork)
		private.GET("/refreshkeys/:net", RefreshKeys)
		//key handlers
		private.POST("/create_key", NewKey)
		private.POST("/delete_key", DeleteKey)
		//user handlers
		private.POST("/create_user", CreateUser)
		private.POST("/delete_user", DeleteUser)
		private.GET("/edit_user", EditUser)
		private.POST("/update_user/:user", UpdateUser)
		//node handlers
		private.POST("/edit_node", EditNode)
		private.POST("/delete_node", DeleteNode)
		private.POST("/update_node/:net/:mac", UpdateNode)
		private.GET("/node_health", NodeHealth)
		//gateway handlers
		private.POST("/create_egress/:net/:mac", CreateEgress)
		private.POST("/process_egress/:net/:mac", ProcessEgress)
		private.POST("/delete_egress/:net/:mac", DeleteEgress)
		private.POST("/create_ingress/:net/:mac", CreateIngress)
		private.POST("/delete_ingress/:net/:mac", DeleteIngress)
		private.POST("/create_relay/:net/:mac", CreateRelay)
		private.POST("/delete_relay/:net/:mac", DeleteRelay)
		private.POST("/process_relay/:net/:mac", ProcessRelayCreation)
		//ext client handlers
		private.POST("/create_ingress_client/:net/:mac", CreateIngressClient)
		private.POST("/delete_ingress_client/:net/:id", DeleteIngressClient)
		private.POST("/edit_ingress_client/:net/:id", EditIngressClient)
		private.POST("/get_qr/:net/:id", GetQR)
		private.POST("/get_client_config/:net/:id", GetClientConfig)
		private.POST("/update_client/:net/:id", UpdateClient)
		//dns handlers
		private.POST("/create_dns", CreateDNS)
		private.POST("/delete_dns/:net/:name/:address", DeleteDNS)
		//logout
		private.GET("/logout", LogOut)
	}
	files := router.Group("/file", FileAuth)
	{
		files.StaticFS("", http.Dir("file"))
		files.POST(":file", FileUpload)
	}
	return router
}

func PrintTimestamp(t int64) string {
	time := time.Unix(t, 0)
	return time.String()
}

func WrapRelayNetwork(network string, data models.Node) map[string]interface{} {
	return map[string]interface{}{
		"NetworkToUse": network,
		"Data":         data,
	}
}

func AuthRequired(c *gin.Context) {
	session := sessions.Default(c)

	loggedIn := session.Get("loggedIn")
	fmt.Println("loggedIn status: ", loggedIn)
	if loggedIn != true {
		adminExists, err := controller.HasAdmin()
		fmt.Println("response from HasAdmin(): ", adminExists, err)
		if err != nil {
			fmt.Println("error checking for admin")
			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
			c.Abort()
		}
		if !adminExists {
			fmt.Println("no admin")
			c.HTML(http.StatusOK, "new", nil)
			c.Abort()
		} else {
			message := session.Get("error")
			fmt.Println("user exists --- message\n", message)
			c.HTML(http.StatusUnauthorized, "Login", gin.H{"messge": message})
			c.Abort()
		}
	}
	fmt.Println("authorized - good to go")
}