--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rvinterf/asyncshell/tchcmd.c	Sat Jun 11 00:13:35 2016 +0000
@@ -0,0 +1,185 @@
+/*
+ * Commands for manipulating the experimental TCH rerouting feature
+ * of FreeCalypso GSM firmware
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+#include "pktmux.h"
+#include "limits.h"
+#include "tch_feature.h"
+
+extern u_char rvi_msg[];
+extern int rvi_msg_len;
+
+static int tch_rawdump_mode;
+
+send_tch_config_req(config)
+{
+	u_char sendpkt[3];
+
+	sendpkt[0] = RVT_TCH_HEADER;
+	sendpkt[1] = TCH_CONFIG_REQ;
+	sendpkt[2] = config;
+	/* send it! */
+	send_pkt_to_target(sendpkt, 3);
+	return(0);
+}
+
+cmd_tchdl_common(argc, argv)
+	char **argv;
+{
+	int config;
+
+	if (!strcmp(argv[0], "enable") || !strcmp(argv[0], "on") ||
+	    !strcmp(argv[0], "1"))
+		config = 1;
+	else if (!strcmp(argv[0], "disable") || !strcmp(argv[0], "off") ||
+		 !strcmp(argv[0], "0"))
+		config = 0;
+	else {
+		printf("error: boolean argument required\n");
+		return(1);
+	}
+	return send_tch_config_req(config);
+}
+
+void
+cmd_tchdl_interactive(argstr)
+	char *argstr;
+{
+	char *argv[2];
+	int argc, rc;
+
+	rc = parse_interactive_command_into_argv(argstr, argv, 1, 1, &argc);
+	if (rc < 0)
+		return;
+	tch_rx_control(1);
+	cmd_tchdl_common(argc, argv);
+}
+
+cmd_tchdl_oneshot(argc, argv)
+	char **argv;
+{
+	return cmd_tchdl_common(argc - 1, argv + 1);
+}
+
+static void
+tch_rawdump()
+{
+	char buf[MAX_PKT_FROM_TARGET*3+5], *dp;
+	u_char *cp, *endp;
+
+	cp = rvi_msg + 2;
+	endp = rvi_msg + rvi_msg_len;
+	strcpy(buf, "TCH:");
+	dp = buf + 4;
+	while (cp < endp) {
+		sprintf(dp, " %02X", *cp++);
+		dp += 3;
+	}
+	*dp = '\0';
+	async_msg_output(buf);
+}
+
+void
+tch_packet_rx()
+{
+	char buf[128];
+
+	if (tch_rawdump_mode) {
+		tch_rawdump();
+		return;
+	}
+	if (rvi_msg_len < 3) {
+inv:		async_msg_output("Error: invalid TCH packet received");
+		return;
+	}
+	switch (rvi_msg[2]) {
+	case TCH_CONFIG_CONF:
+		if (rvi_msg_len != 4)
+			goto inv;
+		if (rvi_msg[3] & 0xFE)
+			goto inv;
+		sprintf(buf, "TCH_CONFIG_CONF: DL forwarding is %s",
+			rvi_msg[3] ? "enabled" : "disabled");
+		async_msg_output(buf);
+		return;
+	case TCH_ULBITS_CONF:
+		if (rvi_msg_len != 3)
+			goto inv;
+		tch_ulbits_conf();
+		return;
+	case TCH_DLBITS_IND:
+		if (rvi_msg_len != 43)
+			goto inv;
+		tch_dlbits_handler();
+		return;
+	default:
+		goto inv;
+	}
+}
+
+static void
+cmd_tch_dumpraw(argc, argv)
+	char **argv;
+{
+	if (argc < 2) {
+		printf("error: too few arguments\n");
+		return;
+	}
+	if (!strcmp(argv[1], "enable") || !strcmp(argv[1], "on") ||
+	    !strcmp(argv[1], "1"))
+		tch_rawdump_mode = 1;
+	else if (!strcmp(argv[1], "disable") || !strcmp(argv[1], "off") ||
+		 !strcmp(argv[1], "0"))
+		tch_rawdump_mode = 0;
+	else
+		printf("error: boolean argument required\n");
+}
+
+static void
+cmd_tch_status(argc, argv)
+	char **argv;
+{
+	if (argc > 1) {
+		printf("error: too many arguments\n");
+		return;
+	}
+	show_tch_record_status();
+	show_tch_play_status();
+	printf("TCH raw dump mode is %s\n",
+		tch_rawdump_mode ? "enabled" : "disabled");
+}
+
+void
+cmd_tch_dispatch(argstr)
+	char *argstr;
+{
+	char *argv[3];
+	int argc, rc;
+
+	rc = parse_interactive_command_into_argv(argstr, argv, 1, 2, &argc);
+	if (rc < 0)
+		return;
+	if (!strcmp(argv[0], "dump-raw")) {
+		cmd_tch_dumpraw(argc, argv);
+		return;
+	}
+	if (!strcmp(argv[0], "play")) {
+		cmd_tch_play(argc, argv);
+		return;
+	}
+	if (!strcmp(argv[0], "record")) {
+		cmd_tch_record(argc, argv);
+		return;
+	}
+	if (!strcmp(argv[0], "status")) {
+		cmd_tch_status(argc, argv);
+		return;
+	}
+	printf("error: invalid tch subcommand\n");
+}