vikunja-api/pkg/routes/api/v1/login.go

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// Vikunja is a todo-list application to facilitate your life.
// Copyright 2018 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/>.
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package v1
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import (
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"code.vikunja.io/api/pkg/models"
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"code.vikunja.io/web/handler"
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"crypto/md5"
"encoding/hex"
"github.com/dgrijalva/jwt-go"
"github.com/labstack/echo"
"github.com/spf13/viper"
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"net/http"
"time"
)
// Token represents an authentification token
type Token struct {
Token string `json:"token"`
}
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// Login is the login handler
// @Summary Login
// @Description Logs a user in. Returns a JWT-Token to authenticate further requests.
// @tags user
// @Accept json
// @Produce json
// @Param credentials body models.UserLogin true "The login credentials"
// @Success 200 {object} v1.Token
// @Failure 400 {object} models.Message "Invalid user password model."
// @Failure 403 {object} models.Message "Invalid username or password."
// @Router /login [post]
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func Login(c echo.Context) error {
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u := models.UserLogin{}
if err := c.Bind(&u); err != nil {
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return c.JSON(http.StatusBadRequest, models.Message{"Please provide a username and password."})
}
// Check user
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user, err := models.CheckUserCredentials(&u)
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if err != nil {
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return handler.HandleHTTPError(err, c)
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}
// Create token
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t, err := CreateNewJWTTokenForUser(&user)
if err != nil {
return err
}
return c.JSON(http.StatusOK, Token{Token: t})
}
// CreateNewJWTTokenForUser generates and signes a new jwt token for a user. This is a global function to be able to call it from integration tests.
func CreateNewJWTTokenForUser(user *models.User) (token string, err error) {
t := jwt.New(jwt.SigningMethodHS256)
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// Set claims
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claims := t.Claims.(jwt.MapClaims)
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claims["username"] = user.Username
claims["email"] = user.Email
claims["id"] = user.ID
claims["exp"] = time.Now().Add(time.Hour * 72).Unix()
avatar := md5.Sum([]byte(user.Email))
claims["avatar"] = hex.EncodeToString(avatar[:])
// Generate encoded token and send it as response.
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return t.SignedString([]byte(viper.GetString("service.JWTSecret")))
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}