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[Qemu-devel] [PATCH 8/9] QMP: Introduce qmp_check_input_obj()
From: |
Luiz Capitulino |
Subject: |
[Qemu-devel] [PATCH 8/9] QMP: Introduce qmp_check_input_obj() |
Date: |
Tue, 1 Jun 2010 17:41:36 -0300 |
This is similar to qmp_check_client_args(), but checks if
the input object follows the specification (QMP/qmp-spec.txt
section 2.3).
As we're limited to three keys, the work here is quite simple:
we iterate over the input object, each time checking if the
given argument complies to the specification.
Signed-off-by: Luiz Capitulino <address@hidden>
---
monitor.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 45 insertions(+), 0 deletions(-)
diff --git a/monitor.c b/monitor.c
index 1875731..654b193 100644
--- a/monitor.c
+++ b/monitor.c
@@ -4271,6 +4271,45 @@ static int qmp_check_client_args(const mon_cmd_t *cmd,
QDict *client_args)
return res.result;
}
+/*
+ * Input object checking rules
+ *
+ * 1. "execute" key must exist (not checked here)
+ * 2. "execute" key must be a string
+ * 3. "arguments" key must be a dict
+ * 4. "id" key can be anything (ie. json-value)
+ * 5. Any argument not listed above is invalid
+ */
+static void qmp_check_input_obj(const char *input_obj_arg_name,
+ QObject *input_obj_arg, void *opaque)
+{
+ int *err = opaque;
+
+ if (*err < 0) {
+ /* report only the first error */
+ return;
+ }
+
+ if (!strcmp(input_obj_arg_name, "execute")) {
+ if (qobject_type(input_obj_arg) != QTYPE_QSTRING) {
+ qerror_report(QERR_QMP_BAD_INPUT_OBJECT_MEMBER, "execute",
+ "string");
+ *err = -1;
+ }
+ } else if (!strcmp(input_obj_arg_name, "arguments")) {
+ if (qobject_type(input_obj_arg) != QTYPE_QDICT) {
+ qerror_report(QERR_QMP_BAD_INPUT_OBJECT_MEMBER, "arguments",
+ "object");
+ *err = -1;
+ }
+ } else if (!strcmp(input_obj_arg_name, "id")) {
+ /* nothing to do */
+ } else {
+ qerror_report(QERR_QMP_INVALID_INPUT_OBJECT_MEMBER,
input_obj_arg_name);
+ *err = -1;
+ }
+}
+
static void handle_qmp_command(JSONMessageParser *parser, QList *tokens)
{
int err;
@@ -4295,6 +4334,12 @@ static void handle_qmp_command(JSONMessageParser
*parser, QList *tokens)
input = qobject_to_qdict(obj);
+ err = 0;
+ qdict_iter(input, qmp_check_input_obj, &err);
+ if (err < 0) {
+ goto err_out;
+ }
+
mon->mc->id = qdict_get(input, "id");
qobject_incref(mon->mc->id);
--
1.7.1.231.gd0b16
- [Qemu-devel] [PATCH 4/9] QMP: Second half of the new argument checking code, (continued)
- [Qemu-devel] [PATCH 4/9] QMP: Second half of the new argument checking code, Luiz Capitulino, 2010/06/01
- Re: [Qemu-devel] [PATCH 4/9] QMP: Second half of the new argument checking code, Markus Armbruster, 2010/06/02
- [Qemu-devel] Handling the O-type, Luiz Capitulino, 2010/06/18
- Re: [Qemu-devel] Handling the O-type, Markus Armbruster, 2010/06/21
- Re: [Qemu-devel] Handling the O-type, Luiz Capitulino, 2010/06/21
- Re: [Qemu-devel] Handling the O-type, Markus Armbruster, 2010/06/21
[Qemu-devel] [PATCH 7/9] QError: Introduce QERR_QMP_BAD_INPUT_OBJECT_MEMBER, Luiz Capitulino, 2010/06/01
[Qemu-devel] [PATCH 8/9] QMP: Introduce qmp_check_input_obj(),
Luiz Capitulino <=
[Qemu-devel] [PATCH 9/9] QMP: Drop old input object checking code, Luiz Capitulino, 2010/06/01
Re: [Qemu-devel] [PATCH 0/9]: QMP: Replace client argument checker, Markus Armbruster, 2010/06/02