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[Qemu-devel] [PULL v2 19/24] keyval: Restrict key components to valid QA
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [PULL v2 19/24] keyval: Restrict key components to valid QAPI names |
Date: |
Mon, 6 Mar 2017 15:11:50 +0100 |
Restricting the key components to something sane leaves us room for
evolving key syntax. Since they will be commonly used as QAPI member
names by the QObject input visitor, we can just as well borrow the
QAPI naming rules here.
Signed-off-by: Markus Armbruster <address@hidden>
Reviewed-by: Kevin Wolf <address@hidden>
Message-Id: <address@hidden>
---
tests/test-keyval.c | 10 ++++++++++
util/keyval.c | 12 ++++++++----
2 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/tests/test-keyval.c b/tests/test-keyval.c
index 1c2aeea..efe27cd 100644
--- a/tests/test-keyval.c
+++ b/tests/test-keyval.c
@@ -41,6 +41,11 @@ static void test_keyval_parse(void)
error_free_or_abort(&err);
g_assert(!qdict);
+ /* Invalid non-empty key (qemu_opts_parse() doesn't care) */
+ qdict = keyval_parse("7up=val", NULL, &err);
+ error_free_or_abort(&err);
+ g_assert(!qdict);
+
/* Overlong key */
memset(long_key, 'a', 127);
long_key[127] = 'z';
@@ -73,6 +78,11 @@ static void test_keyval_parse(void)
QDECREF(qdict);
g_free(params);
+ /* Crap after valid key */
+ qdict = keyval_parse("key[0]=val", NULL, &err);
+ error_free_or_abort(&err);
+ g_assert(!qdict);
+
/* Multiple keys, last one wins */
qdict = keyval_parse("a=1,b=2,,x,a=3", NULL, &error_abort);
g_assert_cmpuint(qdict_size(qdict), ==, 2);
diff --git a/util/keyval.c b/util/keyval.c
index 990126f..29a6368 100644
--- a/util/keyval.c
+++ b/util/keyval.c
@@ -34,6 +34,8 @@
* doesn't have one, because R.a must be an object to satisfy a.b=1
* and a string to satisfy a=2.
*
+ * Key-fragments must be valid QAPI names.
+ *
* The length of any key-fragment must be between 1 and 127.
*
* Design flaw: there is no way to denote an empty non-root object.
@@ -51,12 +53,12 @@
* where no-key is syntactic sugar for implied-key=val-no-key.
*
* TODO support lists
- * TODO support key-fragment with __RFQDN_ prefix (downstream extensions)
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qapi/qmp/qstring.h"
+#include "qapi/util.h"
#include "qemu/option.h"
/*
@@ -118,6 +120,7 @@ static const char *keyval_parse_one(QDict *qdict, const
char *params,
size_t len;
char key_in_cur[128];
QDict *cur;
+ int ret;
QObject *next;
QString *val;
@@ -137,9 +140,10 @@ static const char *keyval_parse_one(QDict *qdict, const
char *params,
cur = qdict;
s = key;
for (;;) {
- for (len = 0; s + len < key_end && s[len] != '.'; len++) {
- }
- if (!len) {
+ ret = parse_qapi_name(s, false);
+ len = ret < 0 ? 0 : ret;
+ assert(s + len <= key_end);
+ if (!len || (s + len < key_end && s[len] != '.')) {
assert(key != implied_key);
error_setg(errp, "Invalid parameter '%.*s'",
(int)(key_end - key), key);
--
2.7.4
- [Qemu-devel] [PULL v2 00/24] block: Command line option -blockdev, Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 01/24] test-qemu-opts: Cover qemu_opts_parse() of "no", Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 16/24] monitor: Assert qmp_schema_json[] is sane, Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 13/24] block: More detailed syntax error reporting for JSON filenames, Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 08/24] qobject: Propagate parse errors through qobject_from_jsonv(), Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 06/24] qapi: Factor out common part of qobject input visitor creation, Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 18/24] qapi: New parse_qapi_name(), Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 19/24] keyval: Restrict key components to valid QAPI names,
Markus Armbruster <=
- [Qemu-devel] [PULL v2 10/24] qjson: Abort earlier on qobject_from_jsonf() misuse, Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 09/24] libqtest: Fix qmp() & friends to abort on JSON parse errors, Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 15/24] test-visitor-serialization: Pass &error_abort to qobject_from_json(), Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 12/24] qobject: Propagate parse errors through qobject_from_json(), Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 11/24] test-qobject-input-visitor: Abort earlier on bad test input, Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 22/24] qapi: Improve how keyval input visitor reports unexpected dicts, Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 05/24] test-keyval: Cover use with qobject input visitor, Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 04/24] qapi: qobject input visitor variant for use with keyval_parse(), Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 17/24] test-qapi-util: New, covering qapi/qapi-util.c, Markus Armbruster, 2017/03/06
- [Qemu-devel] [PULL v2 21/24] block: Initial implementation of -blockdev, Markus Armbruster, 2017/03/06