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From 38d4fe12ad2e3bc18842201f437c480120eace2b Mon Sep 17 00:00:00 2001
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From: Markus Armbruster <armbru@redhat.com>
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Date: Wed, 27 Jul 2016 07:35:02 +0200
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Subject: [PATCH 04/16] check-qjson: Add test for JSON nesting depth limit
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RH-Author: Markus Armbruster <armbru@redhat.com>
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Message-id: <1469604913-12442-6-git-send-email-armbru@redhat.com>
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Patchwork-id: 71481
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O-Subject: [RHEL-7.3 qemu-kvm PATCH v2 04/15] check-qjson: Add test for JSON nesting depth limit
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Bugzilla: 1276036
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Acked-by: John Snow <jsnow@redhat.com>
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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This would have prevented the regression mentioned in the previous
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commit.
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Signed-off-by: Markus Armbruster <armbru@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Message-Id: <1448486613-17634-4-git-send-email-armbru@redhat.com>
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(cherry picked from commit f0ae0304c7a41a42b7d4a6cde450da938d3c2cc7)
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Signed-off-by: Markus Armbruster <armbru@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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tests/check-qjson.c | 25 +++++++++++++++++++++++++
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1 file changed, 25 insertions(+)
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diff --git a/tests/check-qjson.c b/tests/check-qjson.c
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index 4e74548..c5dd74d 100644
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--- a/tests/check-qjson.c
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+++ b/tests/check-qjson.c
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@@ -1465,6 +1465,30 @@ static void unterminated_literal(void)
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g_assert(obj == NULL);
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}
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+static char *make_nest(char *buf, size_t cnt)
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+{
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+ memset(buf, '[', cnt - 1);
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+ buf[cnt - 1] = '{';
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+ buf[cnt] = '}';
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+ memset(buf + cnt + 1, ']', cnt - 1);
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+ buf[2 * cnt] = 0;
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+ return buf;
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+}
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+
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+static void limits_nesting(void)
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+{
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+ enum { max_nesting = 1024 }; /* see qobject/json-streamer.c */
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+ char buf[2 * (max_nesting + 1) + 1];
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+ QObject *obj;
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+
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+ obj = qobject_from_json(make_nest(buf, max_nesting));
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+ g_assert(obj != NULL);
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+ qobject_decref(obj);
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+
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+ obj = qobject_from_json(make_nest(buf, max_nesting + 1));
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+ g_assert(obj == NULL);
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+}
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+
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int main(int argc, char **argv)
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{
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g_test_init(&argc, &argv, NULL);
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@@ -1500,6 +1524,7 @@ int main(int argc, char **argv)
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g_test_add_func("/errors/invalid_array_comma", invalid_array_comma);
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g_test_add_func("/errors/invalid_dict_comma", invalid_dict_comma);
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g_test_add_func("/errors/unterminated/literal", unterminated_literal);
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+ g_test_add_func("/errors/limits/nesting", limits_nesting);
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return g_test_run();
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}
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--
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1.8.3.1
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