Adding upstream version 2.52.6.

Signed-off-by: Daniel Baumann <daniel@debian.org>

middleware/basicauth/basicauth.go

@@ -0,0 +1,60 @@
+package basicauth
+
+import (
+	"encoding/base64"
+	"strings"
+
+	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/utils"
+)
+
+// New creates a new middleware handler
+func New(config Config) fiber.Handler {
+	// Set default config
+	cfg := configDefault(config)
+
+	// Return new handler
+	return func(c *fiber.Ctx) error {
+		// Don't execute middleware if Next returns true
+		if cfg.Next != nil && cfg.Next(c) {
+			return c.Next()
+		}
+
+		// Get authorization header
+		auth := c.Get(fiber.HeaderAuthorization)
+
+		// Check if the header contains content besides "basic".
+		if len(auth) <= 6 || !utils.EqualFold(auth[:6], "basic ") {
+			return cfg.Unauthorized(c)
+		}
+
+		// Decode the header contents
+		raw, err := base64.StdEncoding.DecodeString(auth[6:])
+		if err != nil {
+			return cfg.Unauthorized(c)
+		}
+
+		// Get the credentials
+		creds := utils.UnsafeString(raw)
+
+		// Check if the credentials are in the correct form
+		// which is "username:password".
+		index := strings.Index(creds, ":")
+		if index == -1 {
+			return cfg.Unauthorized(c)
+		}
+
+		// Get the username and password
+		username := creds[:index]
+		password := creds[index+1:]
+
+		if cfg.Authorizer(username, password) {
+			c.Locals(cfg.ContextUsername, username)
+			c.Locals(cfg.ContextPassword, password)
+			return c.Next()
+		}
+
+		// Authentication failed
+		return cfg.Unauthorized(c)
+	}
+}