Add login/register logic

Signed-off-by: gearnode <bryan@frimin.fr>

pkg/probod/auth_config.go

@@ -0,0 +1,56 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package probod
+
+import (
+	"encoding/base64"
+	"fmt"
+)
+
+type (
+	authConfig struct {
+		// Pepper is a secret key used for password hashing
+		// It should be at least 32 bytes long
+		Pepper          string `json:"pepper"`
+		SessionDuration int    `json:"session-duration"`
+		CookieName      string `json:"cookie-name"`
+		CookieSecure    bool   `json:"cookie-secure"`
+		CookieHTTPOnly  bool   `json:"cookie-http-only"`
+		CookieDomain    string `json:"cookie-domain"`
+		CookiePath      string `json:"cookie-path"`
+	}
+)
+
+// GetPepperBytes returns the pepper as a byte array
+func (c authConfig) GetPepperBytes() ([]byte, error) {
+	if c.Pepper == "" {
+		return nil, fmt.Errorf("pepper cannot be empty")
+	}
+
+	// If the pepper is base64 encoded, decode it
+	if decoded, err := base64.StdEncoding.DecodeString(c.Pepper); err == nil {
+		if len(decoded) < 32 {
+			return nil, fmt.Errorf("decoded pepper must be at least 32 bytes long")
+		}
+		return decoded, nil
+	}
+
+	// Otherwise use the raw string as the pepper
+	if len(c.Pepper) < 32 {
+		return nil, fmt.Errorf("pepper must be at least 32 bytes long")
+	}
+
+	return []byte(c.Pepper), nil
+}