ksmbd: set NTLMSSP_NEGOTIATE_SEAL flag to challenge blob

If NTLMSSP_NEGOTIATE_SEAL flags is set in negotiate blob from client,
Set NTLMSSP_NEGOTIATE_SEAL flag to challenge blob.

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

diff --git a/fs/ksmbd/auth.c b/fs/ksmbd/auth.c
index 2330d77..2a39ffb 100644 (file)
--- a/fs/ksmbd/auth.c
+++ b/fs/ksmbd/auth.c
@@ -424,6 +424,9 @@ ksmbd_build_ntlmssp_challenge_blob(struct challenge_message *chgblob,
                                   NTLMSSP_NEGOTIATE_56);
        }
 
+       if (cflags & NTLMSSP_NEGOTIATE_SEAL && smb3_encryption_negotiated(conn))
+               flags |= NTLMSSP_NEGOTIATE_SEAL;
+
        if (cflags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)
                flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
 

diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
index 649f9b7..f99698c 100644 (file)
--- a/fs/ksmbd/smb2pdu.c
+++ b/fs/ksmbd/smb2pdu.c
@@ -925,7 +925,7 @@ static void decode_encrypt_ctxt(struct ksmbd_conn *conn,
  *
  * Return:     true if connection should be encrypted, else false
  */
-static bool smb3_encryption_negotiated(struct ksmbd_conn *conn)
+bool smb3_encryption_negotiated(struct ksmbd_conn *conn)
 {
        if (!conn->ops->generate_encryptionkey)
                return false;

diff --git a/fs/ksmbd/smb2pdu.h b/fs/ksmbd/smb2pdu.h
index 2eb6b81..092fdd3 100644 (file)
--- a/fs/ksmbd/smb2pdu.h
+++ b/fs/ksmbd/smb2pdu.h
@@ -494,6 +494,7 @@ int smb3_decrypt_req(struct ksmbd_work *work);
 int smb3_encrypt_resp(struct ksmbd_work *work);
 bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work);
 int smb2_set_rsp_credits(struct ksmbd_work *work);
+bool smb3_encryption_negotiated(struct ksmbd_conn *conn);
 
 /* smb2 misc functions */
 int ksmbd_smb2_check_message(struct ksmbd_work *work);