From patchwork Tue Aug 3 08:22:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Howard Chung X-Patchwork-Id: 491054 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-21.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ACEA0C4338F for ; Tue, 3 Aug 2021 08:23:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9621960F70 for ; Tue, 3 Aug 2021 08:23:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234578AbhHCIX3 (ORCPT ); Tue, 3 Aug 2021 04:23:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51920 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234440AbhHCIX3 (ORCPT ); Tue, 3 Aug 2021 04:23:29 -0400 Received: from mail-qv1-xf49.google.com (mail-qv1-xf49.google.com [IPv6:2607:f8b0:4864:20::f49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 58338C06175F for ; Tue, 3 Aug 2021 01:23:18 -0700 (PDT) Received: by mail-qv1-xf49.google.com with SMTP id v15-20020a0ccd8f0000b0290335f005a486so16732010qvm.22 for ; Tue, 03 Aug 2021 01:23:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=b/tp9qPc1ZnMdrHLzMJAUnrnMira869jxfHG/TPZ/u8=; b=eX5g7CI39Yw9dOOJQ4DBbU5Y7XVHQmIo9DdetNyjg92hvJoDBF5ZafnJEERW/TPsEt 0fBEY328lttlok2KW/B2bMXBpiGJFWE59oZ4oqPIxpHGBAvyt3WkaPidTrYHZq5RHpEs lde9UwqFsCL7gDrx3HePTFWGZlSK+MUpA0EWzoabVsf3yHdYlDQhPalLqZPun1d/0OJg R1FAw9bUhQgN4m6fHWFujH62pVauHj2TbF/SN7p5735UQcQZeaU5W+jYoH7FWD4bNqN6 msU+1R6ZPUiv8xibeqprexvU9wAp9b+8lLCRUd8Fcin9QZzZrHYOof6/vO8pQhCtW8HI pKpw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=b/tp9qPc1ZnMdrHLzMJAUnrnMira869jxfHG/TPZ/u8=; b=YowYXpuQ7umHL2BFWENXnn9/7BKQ8oygMuZnbG0k63ON/gRWrEzo/kD7OsUJ7pOMoe gb6cR+p1fh1/5FUogzUmc5ly9cvAnYTBjvXJT09gmoME7+VcYSSyQC/2DshhdlJt7E+A B+hdWKHOsVJxQAbN8UsPb0uio5EqPDKd69bX109598zbXxBskmSqNgshMzBG89d1n5sY B8REaiydb1qE4W52m/s+pdHo6zxtEWwfrnJY4d6tmvJmyNwsemRaAhp9AZT9ItruNAX2 VGATspDinoGET+G0Mi4KsrXeNN2rMokCZ5Asmb+I8IOYm4yCCxRXX8z38JC/CDjpRwPE NVmg== X-Gm-Message-State: AOAM530PjS8jdcx+dAo9pJohFzXPYpgWwJNccZpFnQt/P+LncZO2MkmR hmq90arzvO7tvWXbYhM4bmhsaVIVvBt89yAEQ6h2X1YzgU7O0TNWSb0qHyjXil8BiWjJk1Jm4an IGJxwrGXhe5LdQQ4gOALi1mLf4j/H1GWLIlcCMkhza9SLaUgQA12Ryq7r3EwF6u+2cM9NP5AbQV ZFLaMquKf4zs8= X-Google-Smtp-Source: ABdhPJzhQFPshVIQXq4fgs7L5cEL6i1vX/TWl28nnrspMONtjI4r+8IXcH8VWF8jw0aTHLLCU+vXTHhvwgPbBQzSeQ== X-Received: from howardchung-p920.tpe.corp.google.com ([2401:fa00:1:10:ef55:8161:c77b:7a8d]) (user=howardchung job=sendgmr) by 2002:a05:6214:1bcf:: with SMTP id m15mr11584530qvc.62.1627978997338; Tue, 03 Aug 2021 01:23:17 -0700 (PDT) Date: Tue, 3 Aug 2021 16:22:28 +0800 In-Reply-To: <20210803082237.723766-1-howardchung@google.com> Message-Id: <20210803161319.Bluez.v8.4.Ia4dc489979e4bf7ffa3421199b1b9fd8d7f00bbc@changeid> Mime-Version: 1.0 References: <20210803082237.723766-1-howardchung@google.com> X-Mailer: git-send-email 2.32.0.554.ge1b32706d8-goog Subject: [Bluez PATCH v8 04/13] core: block not allowed UUID connect in auth From: Howard Chung To: linux-bluetooth@vger.kernel.org, luiz.dentz@gmail.com Cc: Yun-Hao Chung Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Yun-Hao Chung This ensures any incoming profile connection will be blocked if its UUID is not allowed by the following assumption: 1. Each system profile asks adapter authorization when seeing a incoming connection. 2. Each external profile checks if its UUID is allowed by adapter when seeing a incoming connection. --- The following test steps were performed after enabling admin plugin: 1. Set ServiceAllowList to ["1234"]. 2. Turn on a paired classic keyboard. Verify it can not be connected. 3. Set ServiceAllowList to ["1800","1801","180A","180F","1812"] 4. Turn off and turn on the keyboard. Verift it can be connected. (no changes since v1) src/adapter.c | 5 +++++ src/profile.c | 11 +++++++++++ 2 files changed, 16 insertions(+) diff --git a/src/adapter.c b/src/adapter.c index 0ca4b4f6ff56..3c2008285fbd 100644 --- a/src/adapter.c +++ b/src/adapter.c @@ -7182,6 +7182,11 @@ static gboolean process_auth_queue(gpointer user_data) if (auth->svc_id > 0) return FALSE; + if (!btd_adapter_is_uuid_allowed(adapter, auth->uuid)) { + auth->cb(&err, auth->user_data); + goto next; + } + if (device_is_trusted(device) == TRUE) { auth->cb(NULL, auth->user_data); goto next; diff --git a/src/profile.c b/src/profile.c index 60d17b6ae657..e1bebf1ee19c 100644 --- a/src/profile.c +++ b/src/profile.c @@ -1249,6 +1249,11 @@ static void ext_confirm(GIOChannel *io, gpointer user_data) DBG("incoming connect from %s", addr); + if (!btd_adapter_is_uuid_allowed(adapter_find(&src), uuid)) { + info("UUID %s is not allowed. Igoring the connection", uuid); + return; + } + conn = create_conn(server, io, &src, &dst); if (conn == NULL) return; @@ -1272,6 +1277,7 @@ static void ext_direct_connect(GIOChannel *io, GError *err, gpointer user_data) struct ext_profile *ext = server->ext; GError *gerr = NULL; struct ext_io *conn; + const char *uuid = ext->service ? ext->service : ext->uuid; bdaddr_t src, dst; bt_io_get(io, &gerr, @@ -1285,6 +1291,11 @@ static void ext_direct_connect(GIOChannel *io, GError *err, gpointer user_data) return; } + if (!btd_adapter_is_uuid_allowed(adapter_find(&src), uuid)) { + info("UUID %s is not allowed. Igoring the connection", uuid); + return; + } + conn = create_conn(server, io, &src, &dst); if (conn == NULL) return;