--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rvinterf/asyncshell/usercmd.c	Sat Jun 11 00:13:35 2016 +0000
@@ -0,0 +1,74 @@
+/*
+ * This module implements interactive fc-shell command dispatch.
+ */
+
+#include <sys/types.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+
+extern char usercmd[];
+
+extern void cmd_disable();
+extern void cmd_enable();
+extern void cmd_poweroff();
+extern void cmd_sendat();
+extern void cmd_send_interactive();
+extern void cmd_sp_interactive();
+extern void cmd_tch_dispatch();
+extern void cmd_tchdl_interactive();
+extern void cmd_tgtreset();
+
+void
+cmd_exit()
+{
+	tty_cleanup();
+	exit(0);
+}
+
+static struct cmdtab {
+	char *cmd;
+	void (*func)();
+} cmdtab[] = {
+	{"disable", cmd_disable},
+	{"enable", cmd_enable},
+	{"exit", cmd_exit},
+	{"poweroff", cmd_poweroff},
+	{"quit", cmd_exit},
+	{"send", cmd_send_interactive},
+	{"sp", cmd_sp_interactive},
+	{"str", cmd_sendat},
+	{"tch", cmd_tch_dispatch},
+	{"tch-dl", cmd_tchdl_interactive},
+	{"tgtreset", cmd_tgtreset},
+	{0, 0}
+};
+
+void
+dispatch_user_cmd()
+{
+	char *cp, *np;
+	struct cmdtab *tp;
+
+	for (cp = usercmd; isspace(*cp); cp++)
+		;
+	if (!*cp || *cp == '#')
+		return;
+	if (!strncmp(cp, "AT", 2) || !strncmp(cp, "at", 2)) {
+		cmd_sendat(cp);
+		return;
+	}
+	for (np = cp; *cp && !isspace(*cp); cp++)
+		;
+	if (*cp)
+		*cp++ = '\0';
+	for (tp = cmdtab; tp->cmd; tp++)
+		if (!strcmp(tp->cmd, np))
+			break;
+	if (tp->func)
+		tp->func(cp);
+	else
+		printf("error: no such command\n");
+}