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/* OpenBills-server - Server for libre billing software OpenBills-web
* Copyright (C) 2022 Vidhu Kant Sharma <vidhukant@vidhukant.xyz>
* 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/>.
*/
package auth
import (
"github.com/gin-gonic/gin"
"net/http"
"log"
"context"
"golang.org/x/crypto/bcrypt"
"github.com/MikunoNaka/OpenBills-server/user"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
)
func checkPassword() gin.HandlerFunc {
return func(ctx *gin.Context) {
var u user.User
ctx.BindJSON(&u)
filter := bson.M{
"$or": []bson.M{
// u.UserName in this case can be either username or email
{"Email": u.UserName},
{"UserName": u.UserName},
},
}
// check if the user exists in DB
var user user.User
err := db.FindOne(context.TODO(), filter).Decode(&user)
if err != nil {
if err == mongo.ErrNoDocuments {
ctx.JSON(http.StatusNotFound, gin.H{"error": "user does not exist"})
} else {
log.Printf("Error while reading user from DB to check password: %v", err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{"error": "internal server error"})
}
ctx.Abort()
} else {
// compare hash and password
err = bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(u.Password))
if err != nil {
if err == bcrypt.ErrMismatchedHashAndPassword {
ctx.JSON(http.StatusUnauthorized, gin.H{"error": "incorrect password"})
} else {
log.Printf("Error while checking password: %v", err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{"error": "internal server error"})
}
ctx.Abort()
}
}
// everything's fine!
ctx.Set("user", user)
ctx.Next()
}
}
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