From patchwork Tue Aug 3 08:22:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Howard Chung X-Patchwork-Id: 491803 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, 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 B118BC432BE for ; Tue, 3 Aug 2021 08:23:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9B0E660F70 for ; Tue, 3 Aug 2021 08:23:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234384AbhHCIX0 (ORCPT ); Tue, 3 Aug 2021 04:23:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51900 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234440AbhHCIXZ (ORCPT ); Tue, 3 Aug 2021 04:23:25 -0400 Received: from mail-qt1-x849.google.com (mail-qt1-x849.google.com [IPv6:2607:f8b0:4864:20::849]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AB47EC06175F for ; Tue, 3 Aug 2021 01:23:14 -0700 (PDT) Received: by mail-qt1-x849.google.com with SMTP id s14-20020ac8528e0000b029025f76cabdfcso12540580qtn.15 for ; Tue, 03 Aug 2021 01:23:14 -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=qSw+bxsSECiUZfo9fAo/8Atu8cP/qkm1rNS09cA6DPA=; b=mnVKVIfN7yLls2OXcUPob2kjrm5xQIZvTG4IOyk6FFzGWsN32+18w1Tfhc91LjELoY WDVcaPP7kLxRKxcgHcq0Tm4n89B2udauoEYj7VljMOI1duX1Hr/gZrv6AUbXWMspQmPA 28yPTrudsDcIHtAK8eAFvdtLrEAoevrRHh05sfMJvCcQ4Op1k9l1KcX1ZEFme5IWlMZ/ eLknoOYfgqocNL+B0FBsgtchqpHFxjFSQ5xnc6m6LCYfR2Qqn8CnLvoGekyzyItENAx+ ypoUu9gIVKCl4M3BnVRtfNsjPALWX2zA/yCVVQCXTYcE/3q1Bz1SzySvAUsN6iwPNfv9 Kyvw== 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=qSw+bxsSECiUZfo9fAo/8Atu8cP/qkm1rNS09cA6DPA=; b=pcMvVsJfS7Cf/yiZmwOhVOsVl+WBDK08vuYnNwNzXGn+6eQg2E9W0k7wgck66Jw/iz DMOewvIZjskOvE+5CsCg0sGY3EfS+j96GaLsCrF9o9MNuVUeC/evxLYJjPAhJkmDUkKl QHUGBnQPYfuS7VExzB0voEoX+M76Dun9jB8I3/5xAf5NJb1aXZflmzHCrs45mp/gUuXa CvZ0kk5Qgr3/NF1tBl6+vXpOAhqb87+DWlwYi1cD++JBCPN1ZiRYU1M9DFQ+bO188De4 V2sUvzJytZqEgAyX2oxyeIogUT8UijjS0kafRgwznQlCAj4ihnMY15M0zEdZgY255Rl1 SUWw== X-Gm-Message-State: AOAM531UTNpsPPcN9mVSu5dG612oQKnn/bRqY+1ny5oX7kPBBaHPanJx sxWKNTZw3uB6zDs1h+UAbk6THbpCUM2PhUHHNhEfUPBBX8gDMAdjqfTk1ZyiD4LnXN20MOtZobS 3pc+CGS5ZpukBcilab1ysIUxMLEHmezUL7v5j54oKjHgZJeIO0Lt6jvziIPwIaBRGEJnqikqgLT lfpq69rbfPg50= X-Google-Smtp-Source: ABdhPJx3/IL1KMhOaCAunQIsjff1jMh+SgoNs4X4+ANa7SCpPNcnk+m5p1GGEG51XIYxxEEn2NxttaeXOYFO8knJ9A== X-Received: from howardchung-p920.tpe.corp.google.com ([2401:fa00:1:10:ef55:8161:c77b:7a8d]) (user=howardchung job=sendgmr) by 2002:a05:6214:1021:: with SMTP id k1mr20496588qvr.4.1627978993734; Tue, 03 Aug 2021 01:23:13 -0700 (PDT) Date: Tue, 3 Aug 2021 16:22:27 +0800 In-Reply-To: <20210803082237.723766-1-howardchung@google.com> Message-Id: <20210803161319.Bluez.v8.3.Ibc0b5f02cb249f9aca9efe45e2dadc5e50b7d89e@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 03/13] 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 | 63 +++++++++++++++++++++++++++++++++++- src/device.h | 2 ++ 4 files changed, 162 insertions(+), 1 deletion(-) diff --git a/src/adapter.c b/src/adapter.c index 5a20f4c6239e..0ca4b4f6ff56 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; @@ -3494,6 +3496,93 @@ 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", @@ -5466,6 +5555,7 @@ 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 3d69aeda14fb..35fa9fc5fd1f 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); @@ -248,3 +251,8 @@ 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 49dd57166532..8071068123f2 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; @@ -2634,6 +2694,7 @@ static void device_svc_resolved(struct btd_device *dev, uint8_t browse_type, g_free(cb); } + btd_device_update_allowed_services(dev); device_resolved_drivers(dev->adapter, dev); } 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);