Commit ab45015a968 "qobject: Let qobject_from_jsonf() fail instead of
abort" removed only one of two ways qobject_from_jsonf() can abort.
Wrong. Its rationale for letting it fail is that all remaining users
cope fine with failure. Well, they're just fine with aborting, too;
it's what they do on failure.
Simply reverting the broken commit would bring back the unfortunate
asymmetry between qobject_from_jsonf() and qobject_from_jsonv(): one
aborts, the other returns null. So also rename it to
qobject_from_jsonf_nofail().
Signed-off-by: Markus Armbruster <arm...@redhat.com>
---
include/qapi/qmp/qjson.h | 6 ++++--
qobject/qjson.c | 8 +++++++-
tests/check-qjson.c | 15 ++++++++-------
3 files changed, 19 insertions(+), 10 deletions(-)
diff --git a/include/qapi/qmp/qjson.h b/include/qapi/qmp/qjson.h
index 43b2ce2f33..dc509d51ae 100644
--- a/include/qapi/qmp/qjson.h
+++ b/include/qapi/qmp/qjson.h
@@ -15,11 +15,13 @@
#define QJSON_H
QObject *qobject_from_json(const char *string, Error **errp);
-QObject *qobject_from_jsonf(const char *string, ...) GCC_FMT_ATTR(1, 2);
QObject *qobject_from_jsonv(const char *string, va_list *ap, Error **errp)
GCC_FMT_ATTR(1, 0);
-QDict *qdict_from_jsonf_nofail(const char *string, ...) GCC_FMT_ATTR(1, 2);
+QObject *qobject_from_jsonf_nofail(const char *string, ...)
+ GCC_FMT_ATTR(1, 2);
+QDict *qdict_from_jsonf_nofail(const char *string, ...)
+ GCC_FMT_ATTR(1, 2);
QString *qobject_to_json(const QObject *obj);
QString *qobject_to_json_pretty(const QObject *obj);
diff --git a/qobject/qjson.c b/qobject/qjson.c
index 2f6a590e44..4a9dcff343 100644
--- a/qobject/qjson.c
+++ b/qobject/qjson.c
@@ -59,7 +59,12 @@ QObject *qobject_from_json(const char *string, Error **errp)
return qobject_from_jsonv(string, NULL, errp);
}
-QObject *qobject_from_jsonf(const char *string, ...)
+/*
+ * Parse @string as JSON value with %-escapes interpolated.
+ * Abort on error. Do not use with untrusted @string.
+ * Return the resulting QObject. It is never null.
+ */
+QObject *qobject_from_jsonf_nofail(const char *string, ...)
{
QObject *obj;
va_list ap;
@@ -68,6 +73,7 @@ QObject *qobject_from_jsonf(const char *string, ...)
obj = qobject_from_jsonv(string, &ap, &error_abort);
va_end(ap);
+ assert(obj);
return obj;
}
diff --git a/tests/check-qjson.c b/tests/check-qjson.c
index da582df3e9..eaf5d20663 100644
--- a/tests/check-qjson.c
+++ b/tests/check-qjson.c
@@ -865,7 +865,8 @@ static void vararg_string(void)
QString *str;
str = qobject_to(QString,
- qobject_from_jsonf("%s", test_cases[i].decoded));
+ qobject_from_jsonf_nofail("%s",
+ test_cases[i].decoded));
g_assert(str);
g_assert(strcmp(qstring_get_str(str), test_cases[i].decoded) == 0);
@@ -998,17 +999,17 @@ static void vararg_number(void)
double valuef = 2.323423423;
int64_t val;
- qnum = qobject_to(QNum, qobject_from_jsonf("%d", value));
+ qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%d", value));
g_assert(qnum_get_try_int(qnum, &val));
g_assert_cmpint(val, ==, value);
qobject_unref(qnum);
- qnum = qobject_to(QNum, qobject_from_jsonf("%lld", value_ll));
+ qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%lld", value_ll));
g_assert(qnum_get_try_int(qnum, &val));
g_assert_cmpint(val, ==, value_ll);
qobject_unref(qnum);
- qnum = qobject_to(QNum, qobject_from_jsonf("%f", valuef));
+ qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%f", valuef));
g_assert(qnum_get_double(qnum) == valuef);
qobject_unref(qnum);
}
@@ -1042,13 +1043,13 @@ static void keyword_literal(void)
qobject_unref(qbool);
- qbool = qobject_to(QBool, qobject_from_jsonf("%i", false));
+ qbool = qobject_to(QBool, qobject_from_jsonf_nofail("%i", false));
g_assert(qbool);
g_assert(qbool_get_bool(qbool) == false);
qobject_unref(qbool);
/* Test that non-zero values other than 1 get collapsed to true */
- qbool = qobject_to(QBool, qobject_from_jsonf("%i", 2));
+ qbool = qobject_to(QBool, qobject_from_jsonf_nofail("%i", 2));
g_assert(qbool);
g_assert(qbool_get_bool(qbool) == true);
qobject_unref(qbool);
@@ -1298,7 +1299,7 @@ static void simple_varargs(void)
embedded_obj = qobject_from_json("[32, 42]", &error_abort);
g_assert(embedded_obj != NULL);
- obj = qobject_from_jsonf("[%d, 2, %p]", 1, embedded_obj);
+ obj = qobject_from_jsonf_nofail("[%d, 2, %p]", 1, embedded_obj);
g_assert(qlit_equal_qobject(&decoded, obj));
qobject_unref(obj);
--
2.17.1
