From patchwork Thu Jul 29 08:56:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yun-hao Chung X-Patchwork-Id: 488869 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, 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 AB90DC4338F for ; Thu, 29 Jul 2021 08:58:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 90F4660EB2 for ; Thu, 29 Jul 2021 08:58:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235319AbhG2I6I (ORCPT ); Thu, 29 Jul 2021 04:58:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37656 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235360AbhG2I6E (ORCPT ); Thu, 29 Jul 2021 04:58:04 -0400 Received: from mail-qk1-x74a.google.com (mail-qk1-x74a.google.com [IPv6:2607:f8b0:4864:20::74a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F1EF0C0613CF for ; Thu, 29 Jul 2021 01:58:00 -0700 (PDT) Received: by mail-qk1-x74a.google.com with SMTP id o2-20020a05620a1102b02903b9ade0af31so2970833qkk.1 for ; Thu, 29 Jul 2021 01:58:00 -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=0QDopm0L/q3Z/j2R8nh2/NeLdgKE4fzsVpgzTIUa/ag=; b=H9Bit7SNGVDFu+9NIkB1YfMjLrVymnJbLyHnQB/E9R1zbJ9Gqzn/Jdi2IkWjSpCJFX hrE1qyAqnunzP0mJg8R/OcV6vpO/FTDJirsQ9RkbfopsgP9igSzlZv2NAfyAQUHHJIbG E4bBtmOR+fkC2zd6hMuUhWBkCNML/Ml522eVlGhrjW/kq8jh271ykohd9gEsp1cgn/vx FeqA0QfiN6hCL9lCr70y1HjQC8EvMHMwujTPrz7oNpioTii074de/hSo1WbJzsYSDJkF h1PJFXEmdpcK4ARzrhoImXRQyZoAIuEYRT3RDV3E88cGWTUpjCcn+86HjdwJQeWaX+Wy a20g== 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=0QDopm0L/q3Z/j2R8nh2/NeLdgKE4fzsVpgzTIUa/ag=; b=JOBLxjJmIhSP34d0bpYOzW2lEAUgmqd8Pm5MjLISaU3vh/qgqFS8/PnSwvKzc5hjYd Vh9i74i2w4krg5l6UlXDI2Mo3zCcAlvszvoBxZ70pqyhO5mV5mPoAhT7vYDm+9JYlfWe l5UxM+4ymV36p+9we99QdcdFFRJ9uTBoFMCuYxWvYZZcGIJmvWD8A3OqciPpsCc6VB7U PqpFU/Gz/72F8HXbUPtPYGrh1b1fvohoU0nEvBcV2VrLPbRY6ivYasmP/6Wbmna+pWcH Q0arnq1krPfEiBU3M5PL+cELRIytOYoNgnoiDn3iE+lU82vlekUuGnKmEEP/MPectNeQ NjtA== X-Gm-Message-State: AOAM531/azEqY7UZwL8cu51PokbHCFld3TTldDMz+pkxTrrIMvWmBwXy IwvmA0p+dhDKOquE//VSGswef71iVAN6dodLaJFRidiiFoQU/J7q6toR8xCaodBuYLdUdne8wAt kIfbqpyBGNcqlr7ofIKL5ACdCOhNtnhwrXDFGnCh5vtCaHqEOJ7SfmUyi5jOLIGE+d8Ej4vIfK3 LBT+se4qLGCUY= X-Google-Smtp-Source: ABdhPJyqNBrCvcbZU5/oUebU+co3TLap32QcxjcXixoAuzpfgNLZFosj/9VSV8BoZzd6Numd3Vv7eubgkdmawlIEUA== X-Received: from howardchung-p920.tpe.corp.google.com ([2401:fa00:1:10:ff72:1420:4502:fdaf]) (user=howardchung job=sendgmr) by 2002:a05:6214:3001:: with SMTP id ke1mr1762272qvb.52.1627549079985; Thu, 29 Jul 2021 01:57:59 -0700 (PDT) Date: Thu, 29 Jul 2021 16:56:50 +0800 In-Reply-To: <20210729085651.3600926-1-howardchung@google.com> Message-Id: <20210729165211.Bluez.v5.12.Ib26c0abdbd417673a8b5788c175c06110726a68c@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 12/13] 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 v1) plugins/admin.c | 169 +++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 167 insertions(+), 2 deletions(-) diff --git a/plugins/admin.c b/plugins/admin.c index 653195a0e20b..22500c3b7448 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 +166,8 @@ static void update_device_affected(void *data, void *user_data) ADMIN_POLICY_STATUS_INTERFACE, "AffectedByPolicy"); } +static void store_policy_settings(struct btd_admin_policy *admin_policy); + static DBusMessage *set_service_allowlist(DBusConnection *conn, DBusMessage *msg, void *user_data) { @@ -179,7 +186,9 @@ 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 +209,7 @@ 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; @@ -237,6 +246,161 @@ static const GDBusPropertyTable admin_policy_adapter_properties[] = { { } }; +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 bool device_data_match(const void *a, const void *b) { const struct device_data *data = a; @@ -305,6 +469,7 @@ 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,