osmo-isdntap/src/vty.c

/* osmo-isdntap VTY interface */
/* (C) 2022 by Harald Welte <laforge@osmocom.org>
 * All Rights Reserved
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#define _GNU_SOURCE	/* struct ucred */
#include <sys/socket.h>

#include <stdlib.h>
#include <stdbool.h>
#include <unistd.h>
#include <time.h>
#include <errno.h>

#include <osmocom/core/linuxlist.h>

#include <osmocom/vty/command.h>
#include <osmocom/vty/buffer.h>
#include <osmocom/vty/vty.h>
#include <osmocom/vty/logging.h>
#include <osmocom/vty/stats.h>
#include <osmocom/vty/telnet_interface.h>
#include <osmocom/vty/misc.h>
#include <osmocom/vty/tdef_vty.h>

#include "isdntap.h"

static struct isdntap_instance *vty_itd;

static struct cmd_node isdntap_node = {
	(enum node_type) ISDNTAP_NODE,
	"%s(config-isdntap)# ",
	1,
};

static struct cmd_node line_node = {
	(enum node_type) LINE_NODE,
	"%s(config-isdntap-line)# ",
	1,
};

static void vty_dump_line(struct vty *vty, const struct isdntap_line *line)
{
	vty_out(vty, "Line %s%s", line->name, VTY_NEWLINE);
	if (1) {
		vty_out(vty, " Driver: DAHDI, span_name=%s, span_type=%s, span_no=%d, "
			"basechan=%d, channels=%d%s",
			line->driver.dahdi.name, line->driver.dahdi.spantype,
			line->driver.dahdi.spanno, line->driver.dahdi.basechan,
			line->driver.dahdi.channels, VTY_NEWLINE);
	}

	//vty_out_rate_ctr_group(vty, " ", line->ctrs);
}

DEFUN(show_line, show_line_cmd, "show line",
	SHOW_STR "Display information about an E1 Line\n")
{
	struct isdntap_line *line;

	llist_for_each_entry(line, &vty_itd->lines, list) {
		vty_dump_line(vty, line);
	}

	return CMD_SUCCESS;
}

DEFUN(cfg_isdntap, cfg_isdntap_cmd, "isdntap",
	"isdntap Daemon specific configuration\n")
{
	vty->node = ISDNTAP_NODE;

	return CMD_SUCCESS;
}

DEFUN(cfg_itd_line_dahdi, cfg_itd_line_dahdi_cmd, "line NAME dahdi",
	"Configure an ISDNtap E1 line\n"
	"E1 Line (Span) Name\n"
	"Use the DAHDI Driver\n")
{
	const char *name = argv[0];
	struct isdntap_line *line;

	line = isdntap_line_find(vty_itd, name);
	if (!line) {
		line = isdntap_line_new(vty_itd, name);
	}
	if (!line) {
		vty_out(vty, "%% Could not create line%s", VTY_NEWLINE);
		return CMD_WARNING;
	}
	//line->driver = E1_DRIVER_DAHDI;

	vty->index = line;
	vty->node = LINE_NODE;
	return CMD_SUCCESS;
}

#if 0
DEFUN(cfg_e1d_if_usb_serial, cfg_e1d_if_usb_serial_cmd,
	"usb-serial SERNO",
	"Configure the USB serial number of an E1 interface device\n"
	"iSerial string\n")
{
	struct e1_intf *intf = vty->index;

	if (intf->drv != E1_DRIVER_USB)
		return CMD_WARNING;

	osmo_talloc_replace_string(intf, &intf->usb.serial_str, argv[0]);
	return CMD_SUCCESS;
}

DEFUN(cfg_e1d_if_line_mode, cfg_e1d_if_line_mode_cmd,
	"mode (channelized|superchannel|e1oip)",
	"Configure the mode of the E1 line\n"
	"Channelized (64kBps timeslot) mode\n"
	"Superchannel (1xHDLC over 31x64kBps) mode\n")
{
	struct e1_line *line = vty->index;
	enum e1_line_mode new_mode = get_string_value(e1_line_mode_names, argv[0]);
	if (line->mode != new_mode) {
		/* FIXME: clean up any old state */
		line->mode = new_mode;
	}
	return CMD_SUCCESS;
}
#endif

static int config_write_line(struct vty *vty, struct isdntap_line *line)
{
	vty_out(vty, "  line %s dahdi%s", line->name, VTY_NEWLINE);
	//vty_out(vty, "   mode %s%s", get_value_string(e1_line_mode_names, line->mode), VTY_NEWLINE);

	return 0;
}

static int config_write_isdntap(struct vty *vty)
{
	struct isdntap_line *line;

	vty_out(vty, "isdntap%s", VTY_NEWLINE);

	/* find all vpair interfaces */
	llist_for_each_entry(line, &vty_itd->lines, list) {
		config_write_line(vty, line);
	}

	return 0;
}

void isdntap_vty_init(struct isdntap_instance *itd)
{
	vty_itd = itd;
	install_element_ve(&show_line_cmd);

	install_node(&isdntap_node, config_write_isdntap);
	install_element(CONFIG_NODE, &cfg_isdntap_cmd);
	//install_element(ISDNTAP_NODE, &cfg_vpair_cmd);

	install_node(&line_node, NULL);
	install_element(ISDNTAP_NODE, &cfg_itd_line_dahdi_cmd);
	//install_element(LINE_NODE, &cfg_isdntap_if_line_cmd);
	//install_element(LINE_NODE, &cfg_isdntap_if_usb_serial_cmd);
}