Other: Add more extensive logging

internal/logging/sensitive_default.go

@@ -0,0 +1,40 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge 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.
+//
+// Proton Mail Bridge 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 Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+
+//go:build !sensitive
+
+package logging
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+)
+
+func Sensitive(s string) string {
+	return fmt.Sprintf("******** (%s)", hash(s))
+}
+
+func hash(s string) string {
+	h := sha256.New()
+
+	if _, err := h.Write([]byte(s)); err != nil {
+		panic(err)
+	}
+
+	return hex.EncodeToString(h.Sum(nil))[0:8]
+}

internal/logging/sensitive_sensitive.go

@@ -0,0 +1,24 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge 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.
+//
+// Proton Mail Bridge 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 Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+
+//go:build sensitive
+
+package logging
+
+func Sensitive(s string) string {
+	return s
+}