From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53375) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gXVy6-00061l-7U for qemu-devel@nongnu.org; Thu, 13 Dec 2018 13:44:18 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gXVxv-0002yj-Iu for qemu-devel@nongnu.org; Thu, 13 Dec 2018 13:44:12 -0500 Received: from mx1.redhat.com ([209.132.183.28]:43102) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gXVxr-0001PZ-Mc for qemu-devel@nongnu.org; Thu, 13 Dec 2018 13:44:05 -0500 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E54FC308FF0C for ; Thu, 13 Dec 2018 18:43:45 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B32284530 for ; Thu, 13 Dec 2018 18:43:45 +0000 (UTC) From: Markus Armbruster Date: Thu, 13 Dec 2018 19:43:19 +0100 Message-Id: <20181213184340.24037-12-armbru@redhat.com> In-Reply-To: <20181213184340.24037-1-armbru@redhat.com> References: <20181213184340.24037-1-armbru@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PULL 11/32] json: Fix to reject duplicate object member names List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org The JSON parser happily accepts duplicate object member names. The last value wins. Reproducer #1: $ qemu-system-x86_64 -qmp stdio {"QMP": {"version": {"qemu": {"micro": 93, "minor": 0, "major": 3}, "package": "v3.1.0-rc3-7-g87a45d86ed"}, "capabilities": []}} {'execute':'qmp_capabilities'} {"return": {}} {'execute':'blockdev-add','arguments':{'driver':'null-co', 'node-name':'foo','node-name':'bar'}} {"return": {}} {'execute':'query-named-block-nodes'} {"return": [{ [...] "node-name": "bar" [...] }]} Reproducer #2 is iotest 229. Fix the parser to reject duplicates, and fix iotest 229 not to use them. Reported-by: Max Reitz Signed-off-by: Markus Armbruster Message-Id: <20181206121743.20762-1-armbru@redhat.com> Reviewed-by: Daniel P. Berrang=C3=A9 Reviewed-by: Philippe Mathieu-Daud=C3=A9 [Trailing whitespace tidied up] Signed-off-by: Markus Armbruster --- qobject/json-parser.c | 5 +++++ tests/qemu-iotests/229 | 1 - 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 5a840dfd86..7a7ae9e8d1 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -288,6 +288,11 @@ static int parse_pair(JSONParserContext *ctxt, QDict= *dict) goto out; } =20 + if (qdict_haskey(dict, qstring_get_str(key))) { + parse_error(ctxt, token, "duplicate key"); + goto out; + } + qdict_put_obj(dict, qstring_get_str(key), value); =20 qobject_unref(key); diff --git a/tests/qemu-iotests/229 b/tests/qemu-iotests/229 index 86602437ff..893d098ad2 100755 --- a/tests/qemu-iotests/229 +++ b/tests/qemu-iotests/229 @@ -69,7 +69,6 @@ echo _send_qemu_cmd $QEMU_HANDLE \ "{'execute': 'drive-mirror', 'arguments': {'device': 'testdisk', - 'mode': 'absolute-paths', 'format': '$IMGFMT', 'target': '$DEST_IMG', 'sync': 'full', --=20 2.17.2