466 lines
14 KiB
Go
466 lines
14 KiB
Go
package handler
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import (
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"encoding/json"
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"fmt"
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rice "github.com/GeertJohan/go.rice"
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"net/http"
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"strings"
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"time"
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"github.com/gorilla/sessions"
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"github.com/labstack/echo-contrib/session"
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"github.com/labstack/echo/v4"
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"github.com/labstack/gommon/log"
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"github.com/ngoduykhanh/wireguard-ui/model"
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"github.com/ngoduykhanh/wireguard-ui/util"
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"github.com/rs/xid"
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"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
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)
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// LoginPage handler
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func LoginPage() echo.HandlerFunc {
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return func(c echo.Context) error {
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return c.Render(http.StatusOK, "login.html", map[string]interface{}{})
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}
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}
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// Login for signing in handler
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func Login() echo.HandlerFunc {
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return func(c echo.Context) error {
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user := new(model.User)
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c.Bind(user)
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dbuser, err := util.GetUser()
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if err != nil {
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot query user from DB"})
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}
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if user.Username == dbuser.Username && user.Password == dbuser.Password {
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// TODO: refresh the token
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sess, _ := session.Get("session", c)
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sess.Options = &sessions.Options{
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Path: "/",
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MaxAge: 86400,
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HttpOnly: true,
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}
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// set session_token
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tokenUID := xid.New().String()
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sess.Values["username"] = user.Username
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sess.Values["session_token"] = tokenUID
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sess.Save(c.Request(), c.Response())
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// set session_token in cookie
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cookie := new(http.Cookie)
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cookie.Name = "session_token"
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cookie.Value = tokenUID
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cookie.Expires = time.Now().Add(24 * time.Hour)
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c.SetCookie(cookie)
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return c.JSON(http.StatusOK, jsonHTTPResponse{true, "Logged in successfully"})
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}
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return c.JSON(http.StatusUnauthorized, jsonHTTPResponse{false, "Invalid credentials"})
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}
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}
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// Logout to log a user out
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func Logout() echo.HandlerFunc {
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return func(c echo.Context) error {
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clearSession(c)
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return c.Redirect(http.StatusTemporaryRedirect, "/login")
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}
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}
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// WireGuardClients handler
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func WireGuardClients() echo.HandlerFunc {
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return func(c echo.Context) error {
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// access validation
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validSession(c)
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clientDataList, err := util.GetClients(true)
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if err != nil {
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, fmt.Sprintf("Cannot get client list: %v", err)})
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}
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return c.Render(http.StatusOK, "clients.html", map[string]interface{}{
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"baseData": model.BaseData{Active: ""},
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"username": currentUser(c),
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"clientDataList": clientDataList,
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})
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}
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}
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// NewClient handler
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func NewClient() echo.HandlerFunc {
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return func(c echo.Context) error {
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// access validation
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validSession(c)
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client := new(model.Client)
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c.Bind(client)
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db, err := util.DBConn()
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if err != nil {
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log.Error("Cannot initialize database: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot access database"})
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}
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// read server information
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serverInterface := model.ServerInterface{}
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if err := db.Read("server", "interfaces", &serverInterface); err != nil {
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log.Error("Cannot fetch server interface config from database: ", err)
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}
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// validate the input Allocation IPs
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allocatedIPs, err := util.GetAllocatedIPs()
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check, err := util.ValidateIPAllocation(serverInterface.Addresses, allocatedIPs, client.AllocatedIPs)
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if !check {
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return c.JSON(http.StatusBadRequest, jsonHTTPResponse{false, fmt.Sprintf("%s", err)})
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}
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// validate the input AllowedIPs
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if util.ValidateAllowedIPs(client.AllowedIPs) == false {
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log.Warnf("Invalid Allowed IPs input from user: %v", client.AllowedIPs)
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return c.JSON(http.StatusBadRequest, jsonHTTPResponse{false, "Allowed IPs must be in CIDR format"})
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}
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// gen ID
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guid := xid.New()
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client.ID = guid.String()
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// gen Wireguard key pair
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key, err := wgtypes.GeneratePrivateKey()
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if err != nil {
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log.Error("Cannot generate wireguard key pair: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot generate Wireguard key pair"})
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}
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client.PrivateKey = key.String()
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client.PublicKey = key.PublicKey().String()
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client.CreatedAt = time.Now().UTC()
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client.UpdatedAt = client.CreatedAt
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// write client to the database
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db.Write("clients", client.ID, client)
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log.Infof("Created wireguard client: %v", client)
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return c.JSON(http.StatusOK, client)
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}
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}
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// SetClientStatus handler to enable / disable a client
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func SetClientStatus() echo.HandlerFunc {
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return func(c echo.Context) error {
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// access validation
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validSession(c)
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data := make(map[string]interface{})
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err := json.NewDecoder(c.Request().Body).Decode(&data)
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if err != nil {
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return c.JSON(http.StatusBadRequest, jsonHTTPResponse{false, "Bad post data"})
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}
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clientID := data["id"].(string)
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status := data["status"].(bool)
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db, err := util.DBConn()
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if err != nil {
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log.Error("Cannot initialize database: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot access database"})
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}
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client := model.Client{}
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if err := db.Read("clients", clientID, &client); err != nil {
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log.Error("Cannot fetch server interface config from database: ", err)
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}
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client.Enabled = status
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db.Write("clients", clientID, &client)
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log.Infof("Changed client %s enabled status to %v", client.ID, status)
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return c.JSON(http.StatusOK, jsonHTTPResponse{true, "Changed client status successfully"})
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}
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}
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// DownloadClient handler
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func DownloadClient() echo.HandlerFunc {
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return func(c echo.Context) error {
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clientID := c.QueryParam("clientid")
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if clientID == "" {
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return c.JSON(http.StatusNotFound, jsonHTTPResponse{false, "Missing clientid parameter"})
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}
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client, err := util.GetClientByID(clientID)
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if err != nil {
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log.Errorf("Cannot generate client id %s config file for downloading: %v", clientID, err)
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return c.JSON(http.StatusNotFound, jsonHTTPResponse{false, "Client not found"})
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}
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// build config
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server, _ := util.GetServer()
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globalSettings, _ := util.GetGlobalSettings()
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config := util.BuildClientConfig(client, server, globalSettings)
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// create io reader from string
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reader := strings.NewReader(config)
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// set response header for downloading
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c.Response().Header().Set(echo.HeaderContentDisposition, "attachment; filename=wg0.conf")
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return c.Stream(http.StatusOK, "text/plain", reader)
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}
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}
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// RemoveClient handler
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func RemoveClient() echo.HandlerFunc {
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return func(c echo.Context) error {
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// access validation
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validSession(c)
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client := new(model.Client)
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c.Bind(client)
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// delete client from database
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db, err := util.DBConn()
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if err != nil {
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log.Error("Cannot initialize database: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot access database"})
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}
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if err := db.Delete("clients", client.ID); err != nil {
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log.Error("Cannot delete wireguard client: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot delete client from database"})
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}
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log.Infof("Removed wireguard client: %v", client)
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return c.JSON(http.StatusOK, jsonHTTPResponse{true, "Client removed"})
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}
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}
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// WireGuardServer handler
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func WireGuardServer() echo.HandlerFunc {
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return func(c echo.Context) error {
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// access validation
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validSession(c)
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server, err := util.GetServer()
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if err != nil {
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log.Error("Cannot get server config: ", err)
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}
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return c.Render(http.StatusOK, "server.html", map[string]interface{}{
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"baseData": model.BaseData{Active: "wg-server"},
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"username": currentUser(c),
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"serverInterface": server.Interface,
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"serverKeyPair": server.KeyPair,
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})
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}
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}
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// WireGuardServerInterfaces handler
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func WireGuardServerInterfaces() echo.HandlerFunc {
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return func(c echo.Context) error {
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// access validation
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validSession(c)
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serverInterface := new(model.ServerInterface)
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c.Bind(serverInterface)
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// validate the input addresses
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if util.ValidateServerAddresses(serverInterface.Addresses) == false {
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log.Warnf("Invalid server interface addresses input from user: %v", serverInterface.Addresses)
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return c.JSON(http.StatusBadRequest, jsonHTTPResponse{false, "Interface IP address must be in CIDR format"})
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}
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serverInterface.UpdatedAt = time.Now().UTC()
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// write config to the database
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db, err := util.DBConn()
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if err != nil {
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log.Error("Cannot initialize database: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot access database"})
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}
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db.Write("server", "interfaces", serverInterface)
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log.Infof("Updated wireguard server interfaces settings: %v", serverInterface)
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return c.JSON(http.StatusOK, jsonHTTPResponse{true, "Updated interface addresses successfully"})
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}
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}
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// WireGuardServerKeyPair handler to generate private and public keys
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func WireGuardServerKeyPair() echo.HandlerFunc {
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return func(c echo.Context) error {
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// access validation
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validSession(c)
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// gen Wireguard key pair
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key, err := wgtypes.GeneratePrivateKey()
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if err != nil {
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log.Error("Cannot generate wireguard key pair: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot generate Wireguard key pair"})
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}
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serverKeyPair := new(model.ServerKeypair)
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serverKeyPair.PrivateKey = key.String()
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serverKeyPair.PublicKey = key.PublicKey().String()
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serverKeyPair.UpdatedAt = time.Now().UTC()
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// write config to the database
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db, err := util.DBConn()
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if err != nil {
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log.Error("Cannot initialize database: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot access database"})
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}
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db.Write("server", "keypair", serverKeyPair)
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log.Infof("Updated wireguard server interfaces settings: %v", serverKeyPair)
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return c.JSON(http.StatusOK, serverKeyPair)
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}
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}
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// GlobalSettings handler
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func GlobalSettings() echo.HandlerFunc {
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return func(c echo.Context) error {
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// access validation
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validSession(c)
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globalSettings, err := util.GetGlobalSettings()
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if err != nil {
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log.Error("Cannot get global settings: ", err)
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}
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return c.Render(http.StatusOK, "global_settings.html", map[string]interface{}{
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"baseData": model.BaseData{Active: "global-settings"},
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"username": currentUser(c),
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"globalSettings": globalSettings,
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})
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}
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}
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// GlobalSettingSubmit handler to update the global settings
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func GlobalSettingSubmit() echo.HandlerFunc {
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return func(c echo.Context) error {
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// access validation
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validSession(c)
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globalSettings := new(model.GlobalSetting)
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c.Bind(globalSettings)
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// validate the input dns server list
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if util.ValidateIPAddressList(globalSettings.DNSServers) == false {
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log.Warnf("Invalid DNS server list input from user: %v", globalSettings.DNSServers)
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return c.JSON(http.StatusBadRequest, jsonHTTPResponse{false, "Invalid DNS server address"})
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}
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globalSettings.UpdatedAt = time.Now().UTC()
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// write config to the database
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db, err := util.DBConn()
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if err != nil {
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log.Error("Cannot initialize database: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot access database"})
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}
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db.Write("server", "global_settings", globalSettings)
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log.Infof("Updated global settings: %v", globalSettings)
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return c.JSON(http.StatusOK, jsonHTTPResponse{true, "Updated global settings successfully"})
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}
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}
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// MachineIPAddresses handler to get local interface ip addresses
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func MachineIPAddresses() echo.HandlerFunc {
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return func(c echo.Context) error {
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// access validation
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validSession(c)
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// get private ip addresses
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interfaceList, err := util.GetInterfaceIPs()
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if err != nil {
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot get machine ip addresses"})
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}
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// get public ip address
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// TODO: Remove the go-external-ip dependency
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publicInterface, err := util.GetPublicIP()
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if err != nil {
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log.Warn("Cannot get machine public ip address: ", err)
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} else {
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// prepend public ip to the list
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interfaceList = append([]model.Interface{publicInterface}, interfaceList...)
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}
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return c.JSON(http.StatusOK, interfaceList)
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}
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}
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// SuggestIPAllocation handler to get the list of ip address for client
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func SuggestIPAllocation() echo.HandlerFunc {
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return func(c echo.Context) error {
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// access validation
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validSession(c)
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server, err := util.GetServer()
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if err != nil {
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log.Error("Cannot fetch server config from database: ", err)
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}
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// return the list of suggestedIPs
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// we take the first available ip address from
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// each server's network addresses.
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suggestedIPs := make([]string, 0)
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allocatedIPs, err := util.GetAllocatedIPs()
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if err != nil {
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log.Error("Cannot suggest ip allocation. Failed to get list of allocated ip addresses: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot suggest ip allocation: failed to get list of allocated ip addresses"})
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}
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for _, cidr := range server.Interface.Addresses {
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ip, err := util.GetAvailableIP(cidr, allocatedIPs)
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if err != nil {
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log.Error("Failed to get available ip from a CIDR: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, fmt.Sprintf("Cannot suggest ip allocation: failed to get available ip from network %s", cidr)})
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}
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suggestedIPs = append(suggestedIPs, fmt.Sprintf("%s/32", ip))
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}
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return c.JSON(http.StatusOK, suggestedIPs)
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}
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}
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// ApplyServerConfig handler to write config file and restart Wireguard server
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func ApplyServerConfig(tmplBox *rice.Box) echo.HandlerFunc {
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return func(c echo.Context) error {
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// access validation
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validSession(c)
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server, err := util.GetServer()
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if err != nil {
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log.Error("Cannot get server config: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot get server config"})
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}
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clients, err := util.GetClients(false)
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if err != nil {
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log.Error("Cannot get client config: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot get client config"})
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}
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settings, err := util.GetGlobalSettings()
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if err != nil {
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log.Error("Cannot get global settings: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, "Cannot get global settings"})
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}
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// Write config file
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err = util.WriteWireGuardServerConfig(tmplBox, server, clients, settings)
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if err != nil {
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log.Error("Cannot apply server config: ", err)
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return c.JSON(http.StatusInternalServerError, jsonHTTPResponse{false, fmt.Sprintf("Cannot apply server config: %v", err)})
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}
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return c.JSON(http.StatusOK, jsonHTTPResponse{true, "Applied server config successfully"})
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}
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}
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