61 lines
1.4 KiB
Go
61 lines
1.4 KiB
Go
package auth
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import (
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"fmt"
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"os"
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"strings"
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"gitea.d3m0k1d.ru/d3m0k1d/d3m0k1d.ru/backend/internal/storage"
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"github.com/gin-gonic/gin"
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"github.com/golang-jwt/jwt/v5"
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)
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var jwtSecret = []byte(os.Getenv("JWT_SECRET"))
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func GenerateJWT(user storage.User) (string, error) {
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token := jwt.NewWithClaims(jwt.SigningMethodHS512, jwt.MapClaims{
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"id": user.ID,
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"email": user.Email,
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"github_id": user.GithubID,
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})
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tokenString, err := token.SignedString(jwtSecret)
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if err != nil {
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return "", err
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}
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return tokenString, nil
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}
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func JWTMiddleware() gin.HandlerFunc {
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return func(c *gin.Context) {
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auth := c.GetHeader("Authorization")
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if !strings.HasPrefix(auth, "Bearer ") {
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c.AbortWithStatusJSON(401, gin.H{"error": "Bearer required"})
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return
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}
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tokenString := strings.TrimPrefix(auth, "Bearer ")
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token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
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}
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return jwtSecret, nil
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})
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if err != nil || !token.Valid {
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c.AbortWithStatusJSON(401, gin.H{"error": "invalid token"})
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return
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}
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claims, ok := token.Claims.(jwt.MapClaims)
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if !ok {
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c.AbortWithStatusJSON(401, gin.H{"error": "invalid claims"})
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return
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}
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c.Set("user_id", int(claims["id"].(float64)))
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c.Set("login", claims["login"].(string))
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c.Next()
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}
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}
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