From patchwork Thu Jul 29 08:56:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Howard Chung X-Patchwork-Id: 12408137 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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 7CB5BC4338F for ; Thu, 29 Jul 2021 08:57:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5C0EA61074 for ; Thu, 29 Jul 2021 08:57:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235319AbhG2I5M (ORCPT ); Thu, 29 Jul 2021 04:57:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37396 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234886AbhG2I5L (ORCPT ); Thu, 29 Jul 2021 04:57:11 -0400 Received: from mail-qk1-x749.google.com (mail-qk1-x749.google.com [IPv6:2607:f8b0:4864:20::749]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CA933C061757 for ; Thu, 29 Jul 2021 01:57:08 -0700 (PDT) Received: by mail-qk1-x749.google.com with SMTP id x12-20020a05620a14acb02903b8f9d28c19so3356947qkj.23 for ; Thu, 29 Jul 2021 01:57:08 -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=lcgnPP5ww4lJRDXdTTx6Q4PYdYcLCGwV1/+vXOgA96w=; b=ix3d58KqOhMm19KW3TZ4/Y4h9T70xgIRXAdJbtUORaLNoo10cAVYEZdEQtd9A3LXLz UoDVKbk8Eo/HlsepzHpXIX8QA7HyYeksYAI7Lt1gMuSeD9IA2nrUVrqWyHvShmIpMcuY rL78PBaaJ0Nlajc78XYR99QdgXy/IS6foWq6FlDRD2XTA51BgNH3oGmd2R/1OcqCdVPV 3kWV+C9pwSc79Bs+WDg0uFlCahsmn3/+BOpW+pvdneLB65JP7x7AGyQbeLXb00ji4NXe ZFJayEOXG7ZXO5BsnCSG/NTy/VaVoi2wOLLVpmG4kVEb+Mu9W/hv0FDcuranwlq8Q50f S3kg== 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=lcgnPP5ww4lJRDXdTTx6Q4PYdYcLCGwV1/+vXOgA96w=; b=CLYpUU84pWiYF9/D6J7l9yiYBBih5UqiR+qDN10WyKyrCopjTOM8ZY7+eIFrAr77MF YRpl/CXcEXwxX6em9c4kYn4O+E6YPN4Cnn0upYnBYWPu1heUeRJxhMghaklLc2V1Hl1E A7hD6Q5ecjIow5pvp6nQlFAXT/ETSMuGx4VWJgpPV2HD+Nuv7lYAQi7XopNHuvlCPPO3 ukTFF6WnZmGDfCrbU4OTTPPlCPKabQxjlbzpvrYXD9wr+WoUcG9L//a+tOz/cL8Tn2VO oaVte/LpP1WvLM6MBc2Fl50krNeqTii+NLqi+6upwFjljsAHFRG5vDKt6+mwdCn5q/RE nIfA== X-Gm-Message-State: AOAM5306zWMWbWwsGn6w7iGPkZ0Vp+vXQfzDNNXga769PjY5G0lmcd2O 0Va3yLZAOKq854Q2sSWovnFBMPXESTo3RC72N1GtXRWzBhcOwoj1q5FBdwLfRZR9z4+zApy8GRl +nAknLvD8ksCsrLr1lX/toa+hDkNCnhz13zTrGretrl4A3I+od+tRJV3vmGGr9s/itZX4iKNnZk oicGWyUP3ykmk= X-Google-Smtp-Source: ABdhPJyWydZvEbE9HAPCgxpMeGMHXq6SlXflwlw69xlKOr/qdDlazgebiSBtbw5otn/hBLOH9gR+MaIriZBGjiWwlg== X-Received: from howardchung-p920.tpe.corp.google.com ([2401:fa00:1:10:ff72:1420:4502:fdaf]) (user=howardchung job=sendgmr) by 2002:a0c:d644:: with SMTP id e4mr4177747qvj.45.1627549027948; Thu, 29 Jul 2021 01:57:07 -0700 (PDT) Date: Thu, 29 Jul 2021 16:56:40 +0800 In-Reply-To: <20210729085651.3600926-1-howardchung@google.com> Message-Id: <20210729165211.Bluez.v5.2.Ibc0b5f02cb249f9aca9efe45e2dadc5e50b7d89e@changeid> Mime-Version: 1.0 References: <20210729085651.3600926-1-howardchung@google.com> X-Mailer: git-send-email 2.32.0.554.ge1b32706d8-goog Subject: [Bluez PATCH v5 02/13] core: add adapter and device allowed_uuid functions From: Howard Chung To: linux-bluetooth@vger.kernel.org, luiz.dentz@gmail.com Cc: Yun-Hao Chung , Miao-chen Chou Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Yun-Hao Chung This implements functions in src/adapter.c and src/device.c for plugins setting a list of allowed services. Reviewed-by: Miao-chen Chou --- (no changes since v1) src/adapter.c | 90 +++++++++++++++++++++++++++++++++++++++++++++++++++ src/adapter.h | 8 +++++ src/device.c | 64 +++++++++++++++++++++++++++++++++++- src/device.h | 2 ++ 4 files changed, 163 insertions(+), 1 deletion(-) diff --git a/src/adapter.c b/src/adapter.c index 663b778e4a5d..c7fe27d19a5d 100644 --- a/src/adapter.c +++ b/src/adapter.c @@ -260,6 +260,8 @@ struct btd_adapter { struct btd_battery_provider_manager *battery_provider_manager; + GHashTable *allowed_uuid_set; /* Set of allowed service UUIDs */ + gboolean initialized; GSList *pin_callbacks; @@ -3489,6 +3491,93 @@ static DBusMessage *connect_device(DBusConnection *conn, return NULL; } +static void update_device_allowed_services(void *data, void *user_data) +{ + struct btd_device *device = data; + + btd_device_update_allowed_services(device); +} + +static void add_uuid_to_uuid_set(void *data, void *user_data) +{ + bt_uuid_t *uuid = data; + GHashTable *uuid_set = user_data; + + if (!uuid) { + error("Found NULL in UUID allowed list"); + return; + } + + g_hash_table_add(uuid_set, uuid); +} + +static guint bt_uuid_hash(gconstpointer key) +{ + const bt_uuid_t *uuid = key; + bt_uuid_t uuid_128; + uint64_t *val; + + if (!uuid) + return 0; + + bt_uuid_to_uuid128(uuid, &uuid_128); + val = (uint64_t *)&uuid_128.value.u128; + + return g_int64_hash(val) ^ g_int64_hash(val+1); +} + +static gboolean bt_uuid_equal(gconstpointer v1, gconstpointer v2) +{ + const bt_uuid_t *uuid1 = v1; + const bt_uuid_t *uuid2 = v2; + + if (!uuid1 || !uuid2) + return !uuid1 && !uuid2; + + return bt_uuid_cmp(uuid1, uuid2) == 0; +} + +bool btd_adapter_set_allowed_uuids(struct btd_adapter *adapter, + struct queue *uuids) +{ + if (!adapter) + return false; + + if (adapter->allowed_uuid_set) + g_hash_table_destroy(adapter->allowed_uuid_set); + + adapter->allowed_uuid_set = g_hash_table_new(bt_uuid_hash, + bt_uuid_equal); + if (!adapter->allowed_uuid_set) { + btd_error(adapter->dev_id, + "Failed to allocate allowed_uuid_set"); + return false; + } + + queue_foreach(uuids, add_uuid_to_uuid_set, adapter->allowed_uuid_set); + g_slist_foreach(adapter->devices, update_device_allowed_services, NULL); + + return true; +} + +bool btd_adapter_is_uuid_allowed(struct btd_adapter *adapter, + const char *uuid_str) +{ + bt_uuid_t uuid; + + if (!adapter || !adapter->allowed_uuid_set) + return true; + + if (bt_string_to_uuid(&uuid, uuid_str)) { + btd_error(adapter->dev_id, + "Failed to parse UUID string '%s'", uuid_str); + return false; + } + + return !g_hash_table_size(adapter->allowed_uuid_set) || + g_hash_table_contains(adapter->allowed_uuid_set, &uuid); +} + static const GDBusMethodTable adapter_methods[] = { { GDBUS_ASYNC_METHOD("StartDiscovery", NULL, NULL, start_discovery) }, { GDBUS_METHOD("SetDiscoveryFilter", @@ -5404,6 +5493,7 @@ static void adapter_free(gpointer user_data) g_free(adapter->stored_alias); g_free(adapter->current_alias); free(adapter->modalias); + g_hash_table_destroy(adapter->allowed_uuid_set); g_free(adapter); } diff --git a/src/adapter.h b/src/adapter.h index 60b5e3bcca34..7cac51451249 100644 --- a/src/adapter.h +++ b/src/adapter.h @@ -25,6 +25,7 @@ struct btd_adapter; struct btd_device; +struct queue; struct btd_adapter *btd_adapter_get_default(void); bool btd_adapter_is_default(struct btd_adapter *adapter); @@ -97,6 +98,8 @@ void adapter_service_remove(struct btd_adapter *adapter, uint32_t handle); struct agent *adapter_get_agent(struct btd_adapter *adapter); +bool btd_adapter_uuid_is_allowed(struct btd_adapter *adapter, const char *uuid); + struct btd_adapter *btd_adapter_ref(struct btd_adapter *adapter); void btd_adapter_unref(struct btd_adapter *adapter); @@ -240,3 +243,8 @@ enum kernel_features { }; bool btd_has_kernel_features(uint32_t feature); + +bool btd_adapter_set_allowed_uuids(struct btd_adapter *adapter, + struct queue *uuids); +bool btd_adapter_is_uuid_allowed(struct btd_adapter *adapter, + const char *uuid_str); diff --git a/src/device.c b/src/device.c index b29aa195d19b..c4a4497da01f 100644 --- a/src/device.c +++ b/src/device.c @@ -1929,6 +1929,56 @@ static int service_prio_cmp(gconstpointer a, gconstpointer b) return p2->priority - p1->priority; } +bool btd_device_all_services_allowed(struct btd_device *dev) +{ + GSList *l; + struct btd_adapter *adapter = dev->adapter; + struct btd_service *service; + struct btd_profile *profile; + + for (l = dev->services; l != NULL; l = g_slist_next(l)) { + service = l->data; + profile = btd_service_get_profile(service); + + if (!profile || !profile->auto_connect) + continue; + + if (!btd_adapter_is_uuid_allowed(adapter, profile->remote_uuid)) + return false; + } + + return true; +} + +void btd_device_update_allowed_services(struct btd_device *dev) +{ + struct btd_adapter *adapter = dev->adapter; + struct btd_service *service; + struct btd_profile *profile; + GSList *l; + bool is_allowed; + char addr[18]; + + /* If service discovery is ongoing, let the service discovery complete + * callback call this function. + */ + if (dev->browse) { + ba2str(&dev->bdaddr, addr); + DBG("service discovery of %s is ongoing. Skip updating allowed " + "services", addr); + return; + } + + for (l = dev->services; l != NULL; l = g_slist_next(l)) { + service = l->data; + profile = btd_service_get_profile(service); + + is_allowed = btd_adapter_is_uuid_allowed(adapter, + profile->remote_uuid); + btd_service_set_allowed(service, is_allowed); + } +} + static GSList *create_pending_list(struct btd_device *dev, const char *uuid) { struct btd_service *service; @@ -1937,9 +1987,14 @@ static GSList *create_pending_list(struct btd_device *dev, const char *uuid) if (uuid) { service = find_connectable_service(dev, uuid); - if (service) + + if (!service) + return dev->pending; + + if (btd_service_is_allowed(service)) return g_slist_prepend(dev->pending, service); + info("service %s is blocked", uuid); return dev->pending; } @@ -1950,6 +2005,11 @@ static GSList *create_pending_list(struct btd_device *dev, const char *uuid) if (!p->auto_connect) continue; + if (!btd_service_is_allowed(service)) { + info("service %s is blocked", p->remote_uuid); + continue; + } + if (g_slist_find(dev->pending, service)) continue; @@ -2633,6 +2693,8 @@ static void device_svc_resolved(struct btd_device *dev, uint8_t browse_type, dev->svc_callbacks); g_free(cb); } + + btd_device_update_allowed_services(dev); } static struct bonding_req *bonding_request_new(DBusMessage *msg, diff --git a/src/device.h b/src/device.h index 4ae9abe0dbb4..5f615cb4b6b2 100644 --- a/src/device.h +++ b/src/device.h @@ -175,5 +175,7 @@ uint32_t btd_device_get_current_flags(struct btd_device *dev); void btd_device_flags_changed(struct btd_device *dev, uint32_t supported_flags, uint32_t current_flags); +bool btd_device_all_services_allowed(struct btd_device *dev); +void btd_device_update_allowed_services(struct btd_device *dev); void btd_device_init(void); void btd_device_cleanup(void);