1 files changed, 124 insertions, 0 deletions
diff --git a/qapi/qmp-dispatch.c b/qapi/qmp-dispatch.c
new file mode 100644
index 0000000000..558469325c
--- /dev/null
+++ b/qapi/qmp-dispatch.c
@@ -0,0 +1,124 @@
+/*
+ * Core Definitions for QAPI/QMP Dispatch
+ *
+ * Copyright IBM, Corp. 2011
+ *
+ * Authors:
+ *  Anthony Liguori   <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ *
+ */
+
+#include "qemu-objects.h"
+#include "qapi/qmp-core.h"
+#include "json-parser.h"
+#include "error.h"
+#include "error_int.h"
+#include "qerror.h"
+
+static QDict *qmp_dispatch_check_obj(const QObject *request, Error **errp)
+{
+    const QDictEntry *ent;
+    const char *arg_name;
+    const QObject *arg_obj;
+    bool has_exec_key = false;
+    QDict *dict = NULL;
+
+    if (qobject_type(request) != QTYPE_QDICT) {
+        error_set(errp, QERR_QMP_BAD_INPUT_OBJECT,
+                  "request is not a dictionary");
+        return NULL;
+    }
+
+    dict = qobject_to_qdict(request);
+
+    for (ent = qdict_first(dict); ent;
+         ent = qdict_next(dict, ent)) {
+        arg_name = qdict_entry_key(ent);
+        arg_obj = qdict_entry_value(ent);
+
+        if (!strcmp(arg_name, "execute")) {
+            if (qobject_type(arg_obj) != QTYPE_QSTRING) {
+                error_set(errp, QERR_QMP_BAD_INPUT_OBJECT_MEMBER, "execute",
+                          "string");
+                return NULL;
+            }
+            has_exec_key = true;
+        } else if (strcmp(arg_name, "arguments")) {
+            error_set(errp, QERR_QMP_EXTRA_MEMBER, arg_name);
+            return NULL;
+        }
+    }
+
+    if (!has_exec_key) {
+        error_set(errp, QERR_QMP_BAD_INPUT_OBJECT, "execute");
+        return NULL;
+    }
+
+    return dict;
+}
+
+static QObject *do_qmp_dispatch(QObject *request, Error **errp)
+{
+    const char *command;
+    QDict *args, *dict;
+    QmpCommand *cmd;
+    QObject *ret = NULL;
+
+
+    dict = qmp_dispatch_check_obj(request, errp);
+    if (!dict || error_is_set(errp)) {
+        return NULL;
+    }
+
+    command = qdict_get_str(dict, "execute");
+    cmd = qmp_find_command(command);
+    if (cmd == NULL) {
+        error_set(errp, QERR_COMMAND_NOT_FOUND, command);
+        return NULL;
+    }
+
+    if (!qdict_haskey(dict, "arguments")) {
+        args = qdict_new();
+    } else {
+        args = qdict_get_qdict(dict, "arguments");
+        QINCREF(args);
+    }
+
+    switch (cmd->type) {
+    case QCT_NORMAL:
+        cmd->fn(args, &ret, errp);
+        if (!error_is_set(errp) && ret == NULL) {
+            ret = QOBJECT(qdict_new());
+        }
+        break;
+    }
+
+    QDECREF(args);
+
+    return ret;
+}
+
+QObject *qmp_dispatch(QObject *request)
+{
+    Error *err = NULL;
+    QObject *ret;
+    QDict *rsp;
+
+    ret = do_qmp_dispatch(request, &err);
+
+    rsp = qdict_new();
+    if (err) {
+        qdict_put_obj(rsp, "error", error_get_qobject(err));
+        error_free(err);
+    } else if (ret) {
+        qdict_put_obj(rsp, "return", ret);
+    } else {
+        QDECREF(rsp);
+        return NULL;
+    }
+
+    return QOBJECT(rsp);
+}