GODT-1754: Add logs for unilateral updates and SEARCH.

pkg/algo/hash.go

@@ -0,0 +1,41 @@
+// 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/>.
+
+package algo
+
+import (
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/hex"
+)
+
+func Hash256(b []byte) []byte {
+	h := sha256.Sum256(b)
+	return h[:]
+}
+
+func HashBase64SHA256(s string) string {
+	return base64.StdEncoding.EncodeToString(
+		Hash256([]byte(s)),
+	)
+}
+
+func HashHexSHA256(s string) string {
+	return hex.EncodeToString(
+		Hash256([]byte(s)),
+	)
+}

pkg/message/build_boundary.go

@@ -18,8 +18,7 @@
 package message
 
 import (
-	"crypto/sha256"
-	"encoding/hex"
+	"github.com/ProtonMail/proton-bridge/v2/pkg/algo"
 )
 
 type boundary struct {
@@ -31,13 +30,6 @@ func newBoundary(seed string) *boundary {
 }
 
 func (bw *boundary) gen() string {
-	hash := sha256.New()
-
-	if _, err := hash.Write([]byte(bw.val)); err != nil {
-		panic(err)
-	}
-
-	bw.val = hex.EncodeToString(hash.Sum(nil))
-
+	bw.val = algo.HashHexSHA256(bw.val)
 	return bw.val
 }

pkg/pmapi/dialer_pinning_checker.go

@@ -18,13 +18,13 @@
 package pmapi
 
 import (
-	"crypto/sha256"
 	"crypto/tls"
 	"crypto/x509"
-	"encoding/base64"
 	"errors"
 	"fmt"
 	"net"
+
+	"github.com/ProtonMail/proton-bridge/v2/pkg/algo"
 )
 
 // ErrTLSMismatch indicates that no TLS fingerprint match could be found.
@@ -63,6 +63,5 @@ func (p *pinChecker) checkCertificate(conn net.Conn) error {
 }
 
 func certFingerprint(cert *x509.Certificate) string {
-	hash := sha256.Sum256(cert.RawSubjectPublicKeyInfo)
-	return fmt.Sprintf(`pin-sha256=%q`, base64.StdEncoding.EncodeToString(hash[:]))
+	return fmt.Sprintf(`pin-sha256=%q`, algo.HashBase64SHA256(string(cert.RawSubjectPublicKeyInfo)))
 }