223 lines
6.7 KiB
Go
223 lines
6.7 KiB
Go
// Copyright or © or Copr. happyDNS (2020)
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//
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// contact@happydomain.org
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//
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// This software is a computer program whose purpose is to provide a modern
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// interface to interact with DNS systems.
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//
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// This software is governed by the CeCILL license under French law and abiding
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// by the rules of distribution of free software. You can use, modify and/or
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// redistribute the software under the terms of the CeCILL license as
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// circulated by CEA, CNRS and INRIA at the following URL
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// "http://www.cecill.info".
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//
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// As a counterpart to the access to the source code and rights to copy, modify
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// and redistribute granted by the license, users are provided only with a
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// limited warranty and the software's author, the holder of the economic
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// rights, and the successive licensors have only limited liability.
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//
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// In this respect, the user's attention is drawn to the risks associated with
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// loading, using, modifying and/or developing or reproducing the software by
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// the user in light of its specific status of free software, that may mean
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// that it is complicated to manipulate, and that also therefore means that it
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// is reserved for developers and experienced professionals having in-depth
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// computer knowledge. Users are therefore encouraged to load and test the
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// software's suitability as regards their requirements in conditions enabling
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// the security of their systems and/or data to be ensured and, more generally,
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// to use and operate it in the same conditions as regards security.
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//
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// The fact that you are presently reading this means that you have had
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// knowledge of the CeCILL license and that you accept its terms.
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package api
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import (
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"crypto/rand"
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"encoding/base64"
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"fmt"
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"log"
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"net/http"
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"strings"
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"time"
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"github.com/gin-gonic/gin"
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"github.com/golang-jwt/jwt/v5"
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"git.happydns.org/happydomain/config"
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"git.happydns.org/happydomain/model"
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"git.happydns.org/happydomain/storage"
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)
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const NO_AUTH_ACCOUNT = "_no_auth"
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func declareAuthenticationRoutes(opts *config.Options, router *gin.RouterGroup) {
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router.POST("/auth", func(c *gin.Context) {
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checkAuth(opts, c)
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})
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router.POST("/auth/logout", func(c *gin.Context) {
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logout(opts, c)
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})
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apiAuthRoutes := router.Group("/auth")
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apiAuthRoutes.Use(authMiddleware(opts, true))
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apiAuthRoutes.GET("", func(c *gin.Context) {
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if _, exists := c.Get("MySession"); exists {
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displayAuthToken(c)
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} else {
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displayNotAuthToken(opts, c)
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}
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})
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}
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type DisplayUser struct {
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Id happydns.Identifier `json:"id"`
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Email string `json:"email"`
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CreatedAt time.Time `json:"created_at,omitempty"`
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Settings happydns.UserSettings `json:"settings,omitempty"`
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}
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func currentUser(u *happydns.User) *DisplayUser {
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return &DisplayUser{
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Id: u.Id,
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Email: u.Email,
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CreatedAt: u.CreatedAt,
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Settings: u.Settings,
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}
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}
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func displayAuthToken(c *gin.Context) {
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user := c.MustGet("LoggedUser").(*happydns.User)
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c.JSON(http.StatusOK, currentUser(user))
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}
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func displayNotAuthToken(opts *config.Options, c *gin.Context) {
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if !opts.NoAuth {
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requireLogin(opts, c, "Authorization required")
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return
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}
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claims, err := completeAuth(opts, c, UserProfile{
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UserId: []byte{0},
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Email: NO_AUTH_ACCOUNT,
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EmailVerified: true,
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})
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if err != nil {
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log.Printf("%s %s", c.ClientIP(), err.Error())
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c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{"errmsg": "Something went wrong during your authentication. Please retry in a few minutes"})
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return
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}
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realUser, err := retrieveUserFromClaims(claims)
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if err != nil {
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c.JSON(http.StatusOK, gin.H{"errmsg": "Login success"})
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} else {
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c.JSON(http.StatusOK, currentUser(realUser))
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}
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}
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func logout(opts *config.Options, c *gin.Context) {
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c.SetCookie(
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COOKIE_NAME,
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"",
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-1,
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opts.BaseURL+"/",
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"",
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opts.DevProxy == "" && !strings.HasPrefix(opts.ExternalURL, "http://"),
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true,
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)
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c.JSON(http.StatusNoContent, true)
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}
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type loginForm struct {
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Email string
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Password string
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}
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func checkAuth(opts *config.Options, c *gin.Context) {
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var lf loginForm
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if err := c.ShouldBindJSON(&lf); err != nil {
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log.Printf("%s sends invalid LoginForm JSON: %s", c.ClientIP(), err.Error())
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c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"errmsg": fmt.Sprintf("Something is wrong in received data: %s", err.Error())})
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return
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}
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user, err := storage.MainStore.GetAuthUserByEmail(lf.Email)
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if err != nil {
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log.Printf("%s user's email (%s) not found: %s", c.ClientIP(), lf.Email, err.Error())
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"errmsg": "Invalid username or password."})
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return
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}
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if !user.CheckAuth(lf.Password) {
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log.Printf("%s tries to login as %q, but sent an invalid password", c.ClientIP(), lf.Email)
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"errmsg": "Invalid username or password."})
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return
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}
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if user.EmailVerification == nil {
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log.Printf("%s tries to login as %q, but sent an invalid password", c.ClientIP(), lf.Email)
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"errmsg": "Please validate your e-mail address before your first login.", "href": "/email-validation"})
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return
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}
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claims, err := completeAuth(opts, c, UserProfile{
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UserId: user.Id,
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Email: user.Email,
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EmailVerified: user.EmailVerification != nil,
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CreatedAt: user.CreatedAt,
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})
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if err != nil {
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log.Printf("%s %s", c.ClientIP(), err.Error())
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c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{"errmsg": "Something went wrong during your authentication. Please retry in a few minutes"})
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return
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}
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log.Printf("%s now logged as %q\n", c.ClientIP(), user.Email)
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realUser, err := retrieveUserFromClaims(claims)
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if err != nil {
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c.JSON(http.StatusOK, gin.H{"errmsg": "Login success"})
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} else {
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c.JSON(http.StatusOK, currentUser(realUser))
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}
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}
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func completeAuth(opts *config.Options, c *gin.Context, userprofile UserProfile) (*UserClaims, error) {
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// Issue a new JWT token
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jti := make([]byte, 16)
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_, err := rand.Read(jti)
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if err != nil {
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return nil, fmt.Errorf("unable to read enough random bytes: %w", err)
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}
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iat := jwt.NewNumericDate(time.Now())
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claims := &UserClaims{
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userprofile,
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jwt.RegisteredClaims{
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IssuedAt: iat,
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ID: base64.StdEncoding.EncodeToString(jti),
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},
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}
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jwtToken := jwt.NewWithClaims(signingMethod, claims)
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jwtToken.Header["kid"] = "1"
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token, err := jwtToken.SignedString([]byte(opts.JWTSecretKey))
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if err != nil {
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return nil, fmt.Errorf("unable to sign user claims: %w", err)
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}
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c.SetCookie(
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COOKIE_NAME, // name
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token, // value
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30*24*3600, // maxAge
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opts.BaseURL+"/", // path
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"", // domain
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opts.DevProxy == "" && !strings.HasPrefix(opts.ExternalURL, "http://"), // secure
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true, // httpOnly
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)
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return claims, nil
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}
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