QMP: Drop old client argument checker

Previous two commits added qmp_check_client_args(), which
fully replaces this code and is way better.

It's important to note that the new checker doesn't support
the '/' arg type. As we don't have any of those handlers
converted to QMP, this is just dead code.
Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>

monitor.c

@@ -3973,177 +3973,6 @@ static int monitor_can_read(void *opaque)
     return (mon->suspend_cnt == 0) ? 1 : 0;
 }
 
-typedef struct CmdArgs {
-    QString *name;
-    int type;
-    int flag;
-    int optional;
-} CmdArgs;
-
-static int check_opt(const CmdArgs *cmd_args, const char *name, QDict *args)
-{
-    if (!cmd_args->optional) {
-        qerror_report(QERR_MISSING_PARAMETER, name);
-        return -1;
-    }
-
-    return 0;
-}
-
-static int check_arg(const CmdArgs *cmd_args, QDict *args)
-{
-    QObject *value;
-    const char *name;
-
-    name = qstring_get_str(cmd_args->name);
-
-    if (!args) {
-        return check_opt(cmd_args, name, args);
-    }
-
-    value = qdict_get(args, name);
-    if (!value) {
-        return check_opt(cmd_args, name, args);
-    }
-
-    switch (cmd_args->type) {
-        case 'F':
-        case 'B':
-        case 's':
-            if (qobject_type(value) != QTYPE_QSTRING) {
-                qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "string");
-                return -1;
-            }
-            break;
-        case '/': {
-            int i;
-            const char *keys[] = { "count", "format", "size", NULL };
-
-            for (i = 0; keys[i]; i++) {
-                QObject *obj = qdict_get(args, keys[i]);
-                if (!obj) {
-                    qerror_report(QERR_MISSING_PARAMETER, name);
-                    return -1;
-                }
-                if (qobject_type(obj) != QTYPE_QINT) {
-                    qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "int");
-                    return -1;
-                }
-            }
-            break;
-        }
-        case 'i':
-        case 'l':
-        case 'M':
-            if (qobject_type(value) != QTYPE_QINT) {
-                qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "int");
-                return -1;
-            }
-            break;
-        case 'f':
-        case 'T':
-            if (qobject_type(value) != QTYPE_QINT && qobject_type(value) != QTYPE_QFLOAT) {
-                qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "number");
-                return -1;
-            }
-            break;
-        case 'b':
-            if (qobject_type(value) != QTYPE_QBOOL) {
-                qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "bool");
-                return -1;
-            }
-            break;
-        case '-':
-            if (qobject_type(value) != QTYPE_QINT &&
-                qobject_type(value) != QTYPE_QBOOL) {
-                qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "bool");
-                return -1;
-            }
-            break;
-        case 'O':
-        default:
-            /* impossible */
-            abort();
-    }
-
-    return 0;
-}
-
-static void cmd_args_init(CmdArgs *cmd_args)
-{
-    cmd_args->name = qstring_new();
-    cmd_args->type = cmd_args->flag = cmd_args->optional = 0;
-}
-
-static int check_opts(QemuOptsList *opts_list, QDict *args)
-{
-    assert(!opts_list->desc->name);
-    return 0;
-}
-
-/*
- * This is not trivial, we have to parse Monitor command's argument
- * type syntax to be able to check the arguments provided by clients.
- *
- * In the near future we will be using an array for that and will be
- * able to drop all this parsing...
- */
-static int monitor_check_qmp_args(const mon_cmd_t *cmd, QDict *args)
-{
-    int err;
-    const char *p;
-    CmdArgs cmd_args;
-    QemuOptsList *opts_list;
-
-    if (cmd->args_type == NULL) {
-        return (qdict_size(args) == 0 ? 0 : -1);
-    }
-
-    err = 0;
-    cmd_args_init(&cmd_args);
-    opts_list = NULL;
-
-    for (p = cmd->args_type;; p++) {
-        if (*p == ':') {
-            cmd_args.type = *++p;
-            p++;
-            if (cmd_args.type == '-') {
-                cmd_args.flag = *p++;
-                cmd_args.optional = 1;
-            } else if (cmd_args.type == 'O') {
-                opts_list = qemu_find_opts(qstring_get_str(cmd_args.name));
-                assert(opts_list);
-            } else if (*p == '?') {
-                cmd_args.optional = 1;
-                p++;
-            }
-
-            assert(*p == ',' || *p == '\0');
-            if (opts_list) {
-                err = check_opts(opts_list, args);
-                opts_list = NULL;
-            } else {
-                err = check_arg(&cmd_args, args);
-                QDECREF(cmd_args.name);
-                cmd_args_init(&cmd_args);
-            }
-
-            if (err < 0) {
-                break;
-            }
-        } else {
-            qstring_append_chr(cmd_args.name, *p);
-        }
-
-        if (*p == '\0') {
-            break;
-        }
-    }
-
-    QDECREF(cmd_args.name);
-    return err;
-}
-
 static int invalid_qmp_mode(const Monitor *mon, const char *cmd_name)
 {
     int is_cap = compare_cmd(cmd_name, "qmp_capabilities");
@@ -4420,11 +4249,6 @@ static void handle_qmp_command(JSONMessageParser *parser, QList *tokens)
         goto err_out;
     }
 
-    err = monitor_check_qmp_args(cmd, args);
-    if (err < 0) {
-        goto err_out;
-    }
-
     if (monitor_handler_is_async(cmd)) {
         err = qmp_async_cmd_handler(mon, cmd, args);
         if (err) {