51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
package middleware
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import (
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"fmt"
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"net/http"
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"git.beisel.it/florian/hostname-service/config"
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"github.com/dgrijalva/jwt-go"
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"github.com/gin-gonic/gin"
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)
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func Authenticate() gin.HandlerFunc {
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return func(c *gin.Context) {
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const Bearer_schema = "Bearer "
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header := c.GetHeader("Authorization")
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if header == "" {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "No token provided"})
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return
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}
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tokenString := header[len(Bearer_schema):]
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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")
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}
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jwtKeyBytes := []byte(config.GlobalConfig.JwtKey)
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return jwtKeyBytes, nil
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})
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if err != nil {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Invalid token: " + err.Error()})
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return
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}
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if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
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// Extract the username from the MapClaims
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if username, ok := claims["sub"].(string); ok {
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c.Set("username", username)
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} else {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Invalid token claims"})
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return
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}
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} else {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Invalid token"})
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return
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}
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c.Next()
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}
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}
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