From patchwork Fri May 10 09:11:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bastien Nocera X-Patchwork-Id: 13661168 Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3786A79945 for ; Fri, 10 May 2024 09:18:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715332705; cv=none; b=tOujzsNdn9VUAE6WC21AXq+GqfKOnNzDTW3izOEPVG6zwRckVHVk3rkbx2tTOVrOZYUU4kDfKsWKX4fBrbW4VI0UksJ5EJD65vH1JXMqjeamXljn6dyQU+rmfylvjlEy0AyFHuW4WBxNSoZGKy0ZK70YJkBFWBo8zWxnMAujDr4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715332705; c=relaxed/simple; bh=5TXl3HVkG/uQBuuY1wI8Z0QrwLoCEPRLF38cOOWUhP4=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=j/MgTY12pyOj9ytKvfRpfjBE4z8Avo62SM6AFmVFnEBVtdrgCucKXYSVmO/ZErBxaSESf2MWgaYH8VjSKy+98/dhKlgHAXfSD6NM8f5o/4cjb66qyij9/7PKN1Sv8V6RXuOkA7DCtqtuLb0ugOzi2ZHiut0ApDsLnruPcKOpAow= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=hadess.net; spf=pass smtp.mailfrom=hadess.net; arc=none smtp.client-ip=217.70.183.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=hadess.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=hadess.net Received: by mail.gandi.net (Postfix) with ESMTPSA id 2AB3A1BF20C for ; Fri, 10 May 2024 09:18:16 +0000 (UTC) From: Bastien Nocera To: linux-bluetooth@vger.kernel.org Subject: [BlueZ 04/14] client/gatt: Check write_value() retval Date: Fri, 10 May 2024 11:11:02 +0200 Message-ID: <20240510091814.3172988-5-hadess@hadess.net> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240510091814.3172988-1-hadess@hadess.net> References: <20240510091814.3172988-1-hadess@hadess.net> Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: hadess@hadess.net Error: CHECKED_RETURN (CWE-252): [#def35] bluez-5.75/client/gatt.c:3191:3: check_return: Calling "write_value" without checking return value (as is done elsewhere 5 out of 6 times). bluez-5.75/client/gatt.c:2371:2: example_checked: Example 1: "write_value(&chrc->value_len, &chrc->value, value, value_len, aad->offset, chrc->max_val_len)" has its value checked in "write_value(&chrc->value_len, &chrc->value, value, value_len, aad->offset, chrc->max_val_len)". bluez-5.75/client/gatt.c:2502:2: example_checked: Example 2: "write_value(&chrc->value_len, &chrc->value, value, value_len, offset, chrc->max_val_len)" has its value checked in "write_value(&chrc->value_len, &chrc->value, value, value_len, offset, chrc->max_val_len)". bluez-5.75/client/gatt.c:2919:2: example_checked: Example 3: "write_value(&desc->value_len, &desc->value, value, value_len, offset, desc->max_val_len)" has its value checked in "write_value(&desc->value_len, &desc->value, value, value_len, offset, desc->max_val_len)". bluez-5.75/client/gatt.c:759:3: example_checked: Example 4: "write_value(&c->value_len, &c->value, value, value_len, offset, c->max_val_len)" has its value checked in "write_value(&c->value_len, &c->value, value, value_len, offset, c->max_val_len)". bluez-5.75/client/gatt.c:775:3: example_checked: Example 5: "write_value(&d->value_len, &d->value, value, value_len, offset, d->max_val_len)" has its value checked in "write_value(&d->value_len, &d->value, value, value_len, offset, d->max_val_len)". 3189| } 3190| 3191|-> write_value(&chrc->value_len, &chrc->value, value, len, 3192| 0, chrc->max_val_len); --- client/gatt.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/client/gatt.c b/client/gatt.c index 6c7603985172..51fa8ba8553c 100644 --- a/client/gatt.c +++ b/client/gatt.c @@ -3197,9 +3197,13 @@ static void proxy_property_changed(GDBusProxy *proxy, const char *name, dbus_message_iter_get_fixed_array(&array, &value, &len); } - write_value(&chrc->value_len, &chrc->value, value, len, - 0, chrc->max_val_len); - bt_shell_hexdump(value, len); + if (write_value(&chrc->value_len, &chrc->value, value, len, + 0, chrc->max_val_len)) { + bt_shell_printf("Unable to update property value for %s\n", + name) + } else { + bt_shell_hexdump(value, len); + } } g_dbus_emit_property_changed(conn, chrc->path, CHRC_INTERFACE, name);