From patchwork Tue Aug 3 11:43:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Howard Chung X-Patchwork-Id: 491045 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=-23.5 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, UNWANTED_LANGUAGE_BODY, 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 DD240C4320A for ; Tue, 3 Aug 2021 11:44:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C787E610A0 for ; Tue, 3 Aug 2021 11:44:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236134AbhHCLov (ORCPT ); Tue, 3 Aug 2021 07:44:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45594 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236045AbhHCLoT (ORCPT ); Tue, 3 Aug 2021 07:44:19 -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 AC9E1C06175F for ; Tue, 3 Aug 2021 04:44:06 -0700 (PDT) Received: by mail-qk1-x749.google.com with SMTP id j12-20020a05620a146cb02903ad9c5e94baso16347996qkl.16 for ; Tue, 03 Aug 2021 04:44:06 -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=HT6GZewuWl+DtJ4c8B9aj3YtUWlkueJmooALc8VEJgE=; b=MR8SDqqmRzObNxYFOq6kTmLHcaA4+1krGDnsxhAfmjR6jhjLANVfBDJMeLbqmX8KqT js6qeddYSkS7VfNykL/YOsYio6otclAa78ekavQEJmM9wpcBeqtfcdwGgzIq2AE7P5vg D/9P1AoNyl2QBlDtzIMqzhCGk6pRe81ycEb66lAnI/1u6Ad8+aVGd3yzamLBv+XE553Y 2UESdmVT1wl5CAijZX3Z41+OIj0jcWiSZ8TuGuLA8KSpX6YXdnzpNh5aW4BbhqwOeU4X IZgnIBQZVRBzYoyZe6GH8NgW8C5c8eG6cYU2pkqtcxnYwyVYADdo/L5CkWrSaIM41NHo Nr6Q== 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=HT6GZewuWl+DtJ4c8B9aj3YtUWlkueJmooALc8VEJgE=; b=o3VWRuqATREIRp4osvimOhtZBBMKdghjhs/3g5ialsJrMzMFW4wItvdNWTH7vUYZcH nksAtF3kniZC6qqA2JEmWLTsTE+vV+o3FWtMrnOUxQXkV98ICkAIfftmjZnmQeDTTV5m 2j9sTOC6BJKIe+HXA4oosw9auN2/vI/c10sHnvjVgHEJjrMwgQsQOgLb/eGSqd1aw86B 65GsBLRXssQG8F1oAukPKOUXml192FMtWKcoOzlOdzr9VCXs3wsxCb7Nj2LaEP+Fbs5v kyDMLRNtlhNBn4qP/DLLtktLSSy7F9B4h4yiiG+zLAgHAliG/Kpp9W1bc823izWGOd1V UFng== X-Gm-Message-State: AOAM5333WC0vcqEDo/FW8uXIqZeSg+jjJVlfxXJaWLkS6xjSGgQjbsfn snrsJ6peb//LPEDUPavSJcMPwPsEk79V5yN217Qy4O5JJhuTywsCFVFPdP41wRdhxGVukFswjZc lNCnb9keKTS/13D8hwBubtxUxX0K8QtrE4iszbyeLU90bwVpSSrmcndAsw5e74r++ospQR57btU /TWzPr/SUvOKE= X-Google-Smtp-Source: ABdhPJz0sWlP5rAAraFZJvfCsCRKPDECBChm4ILI1mTtKUTKMhUsVK3P+UTwx4KHG9VKuDo//MBRXIudh3VP0ERqrw== X-Received: from howardchung-p920.tpe.corp.google.com ([2401:fa00:1:10:ef55:8161:c77b:7a8d]) (user=howardchung job=sendgmr) by 2002:a05:6214:1362:: with SMTP id c2mr21398056qvw.9.1627991045835; Tue, 03 Aug 2021 04:44:05 -0700 (PDT) Date: Tue, 3 Aug 2021 19:43:15 +0800 In-Reply-To: <20210803114317.801840-1-howardchung@google.com> Message-Id: <20210803194127.Bluez.v9.11.Ib26c0abdbd417673a8b5788c175c06110726a68c@changeid> Mime-Version: 1.0 References: <20210803114317.801840-1-howardchung@google.com> X-Mailer: git-send-email 2.32.0.554.ge1b32706d8-goog Subject: [Bluez PATCH v9 11/13] plugins/admin: persist policy settings 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 adds code to store the ServiceAllowlist to file /var/lib/bluetooth/{MAC_ADDR}/admin_policy The stored settings will be loaded upon admin_policy initialized. Reviewed-by: Miao-chen Chou --- The following test steps were performed: 1. Set ServiceAllowlist to ["1124","180A","180F","1812", "1801"] 2. restart bluetoothd 3. Verify ServiceAllowlist is ["1124","180A","180F","1812","1801"] in UUID-128 form 4. Set ServiceAllowlist to [] 5. restart bluetoothd 6. Verify ServiceAllowlist is [] (no changes since v8) Changes in v8: - Move store_policy_settings earlier to avoid forward declaration. plugins/admin.c | 167 +++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 165 insertions(+), 2 deletions(-) diff --git a/plugins/admin.c b/plugins/admin.c index 7936f8c11475..428a5528cc88 100644 --- a/plugins/admin.c +++ b/plugins/admin.c @@ -14,6 +14,9 @@ #include #include +#include +#include +#include #include "lib/bluetooth.h" #include "lib/uuid.h" @@ -24,11 +27,13 @@ #include "src/error.h" #include "src/log.h" #include "src/plugin.h" +#include "src/textfile.h" #include "src/shared/queue.h" #define ADMIN_POLICY_SET_INTERFACE "org.bluez.AdminPolicySet1" #define ADMIN_POLICY_STATUS_INTERFACE "org.bluez.AdminPolicyStatus1" +#define ADMIN_POLICY_STORAGE STORAGEDIR "/admin_policy_settings" #define DBUS_BLUEZ_SERVICE "org.bluez" #define BTD_DEVICE_INTERFACE "org.bluez.Device1" @@ -161,6 +166,161 @@ static void update_device_affected(void *data, void *user_data) ADMIN_POLICY_STATUS_INTERFACE, "AffectedByPolicy"); } +static void free_uuid_strings(char **uuid_strs, gsize num) +{ + gsize i; + + for (i = 0; i < num; i++) + g_free(uuid_strs[i]); + g_free(uuid_strs); +} + +static char **new_uuid_strings(struct queue *allowlist, gsize *num) +{ + const struct queue_entry *entry = NULL; + bt_uuid_t *uuid = NULL; + char **uuid_strs = NULL; + gsize i = 0, allowlist_num; + + /* Set num to a non-zero number so that whoever call this could know if + * this function success or not + */ + *num = 1; + + allowlist_num = queue_length(allowlist); + uuid_strs = g_try_malloc_n(allowlist_num, sizeof(char *)); + if (!uuid_strs) + return NULL; + + for (entry = queue_get_entries(allowlist); entry != NULL; + entry = entry->next) { + uuid = entry->data; + uuid_strs[i] = g_try_malloc0(MAX_LEN_UUID_STR * sizeof(char)); + + if (!uuid_strs[i]) + goto failed; + + bt_uuid_to_string(uuid, uuid_strs[i], MAX_LEN_UUID_STR); + i++; + } + + *num = allowlist_num; + return uuid_strs; + +failed: + free_uuid_strings(uuid_strs, i); + + return NULL; +} + +static void store_policy_settings(struct btd_admin_policy *admin_policy) +{ + GKeyFile *key_file = NULL; + char *filename = ADMIN_POLICY_STORAGE; + char *key_file_data = NULL; + char **uuid_strs = NULL; + gsize length, num_uuids; + + key_file = g_key_file_new(); + + uuid_strs = new_uuid_strings(admin_policy->service_allowlist, + &num_uuids); + + if (!uuid_strs && num_uuids) { + btd_error(admin_policy->adapter_id, + "Failed to allocate uuid strings"); + goto failed; + } + + g_key_file_set_string_list(key_file, "General", "ServiceAllowlist", + (const gchar * const *)uuid_strs, + num_uuids); + + if (create_file(ADMIN_POLICY_STORAGE, 0600) < 0) { + btd_error(admin_policy->adapter_id, "create %s failed, %s", + filename, strerror(errno)); + goto failed; + } + + key_file_data = g_key_file_to_data(key_file, &length, NULL); + g_file_set_contents(ADMIN_POLICY_STORAGE, key_file_data, length, NULL); + + g_free(key_file_data); + free_uuid_strings(uuid_strs, num_uuids); + +failed: + g_key_file_free(key_file); +} + +static void key_file_load_service_allowlist(GKeyFile *key_file, + struct btd_admin_policy *admin_policy) +{ + GError *gerr = NULL; + struct queue *uuid_list = NULL; + gchar **uuids = NULL; + gsize num, i; + + uuids = g_key_file_get_string_list(key_file, "General", + "ServiceAllowlist", &num, &gerr); + + if (gerr) { + btd_error(admin_policy->adapter_id, + "Failed to load ServiceAllowlist"); + g_error_free(gerr); + return; + } + + uuid_list = queue_new(); + for (i = 0; i < num; i++) { + bt_uuid_t *uuid = g_try_malloc(sizeof(*uuid)); + + if (!uuid) + goto failed; + + if (bt_string_to_uuid(uuid, *uuids)) { + + btd_error(admin_policy->adapter_id, + "Failed to convert '%s' to uuid struct", + *uuids); + + g_free(uuid); + goto failed; + } + + queue_push_tail(uuid_list, uuid); + uuids++; + } + + if (!service_allowlist_set(admin_policy, uuid_list)) + goto failed; + + return; +failed: + free_service_allowlist(uuid_list); +} + +static void load_policy_settings(struct btd_admin_policy *admin_policy) +{ + GKeyFile *key_file; + char *filename = ADMIN_POLICY_STORAGE; + struct stat st; + + if (stat(filename, &st) < 0) { + btd_error(admin_policy->adapter_id, + "Failed to get file %s information", + filename); + return; + } + + key_file = g_key_file_new(); + + g_key_file_load_from_file(key_file, filename, 0, NULL); + + key_file_load_service_allowlist(key_file, admin_policy); + + g_key_file_free(key_file); +} + static DBusMessage *set_service_allowlist(DBusConnection *conn, DBusMessage *msg, void *user_data) { @@ -179,7 +339,9 @@ static DBusMessage *set_service_allowlist(DBusConnection *conn, return btd_error_invalid_args(msg); } - if (!service_allowlist_set(admin_policy, uuid_list)) { + if (service_allowlist_set(admin_policy, uuid_list)) { + store_policy_settings(admin_policy); + } else { free_service_allowlist(uuid_list); return btd_error_failed(msg, "service_allowlist_set failed"); } @@ -200,7 +362,7 @@ static const GDBusMethodTable admin_policy_adapter_methods[] = { { } }; -void append_service_uuid(void *data, void *user_data) +static void append_service_uuid(void *data, void *user_data) { bt_uuid_t *uuid = data; DBusMessageIter *entry = user_data; @@ -305,6 +467,7 @@ static int admin_policy_adapter_probe(struct btd_adapter *adapter) if (!policy_data) return -ENOMEM; + load_policy_settings(policy_data); adapter_path = adapter_get_path(adapter); if (!g_dbus_register_interface(dbus_conn, adapter_path,