/*-
 * l2cap.c
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $Id: l2cap.c,v 1.5 2003/05/16 19:52:37 max Exp $
 */

#include <sys/ioctl.h>
#define L2CAP_SOCKET_CHECKED
#include <bluetooth.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "l2control.h"

#define SIZE(x) (sizeof((x))/sizeof((x)[0]))

/* Print BDADDR */
static char *
bdaddrpr(bdaddr_t const *ba)
{
        extern int       numeric_bdaddr;
        static char      str[24];
        struct hostent  *he = NULL;

        if (memcmp(ba, NG_HCI_BDADDR_ANY, sizeof(*ba)) == 0) {
                str[0] = '*';
                str[1] = 0;

                return (str);
        }

        if (!numeric_bdaddr &&
            (he = bt_gethostbyaddr((char *)ba, sizeof(*ba), AF_BLUETOOTH)) != NULL) {
                strlcpy(str, he->h_name, sizeof(str));

                return (str);
        }

        bt_ntoa(ba, str);

        return (str);
} /* bdaddrpr */

/* Send read_node_flags command to the node */
static int
l2cap_read_node_flags(int s, int argc, char **argv)
{
        struct ng_btsocket_l2cap_raw_node_flags r;

        memset(&r, 0, sizeof(r));
        if (ioctl(s, SIOC_L2CAP_NODE_GET_FLAGS, &r, sizeof(r)) < 0)
                return (ERROR);

        fprintf(stdout, "Connectionless traffic flags:\n");
        fprintf(stdout, "\tSDP: %s\n",
                (r.flags & NG_L2CAP_CLT_SDP_DISABLED)? "disabled" : "enabled");
        fprintf(stdout, "\tRFCOMM: %s\n",
                (r.flags & NG_L2CAP_CLT_RFCOMM_DISABLED)? "disabled":"enabled");
        fprintf(stdout, "\tTCP: %s\n",
                (r.flags & NG_L2CAP_CLT_TCP_DISABLED)? "disabled" : "enabled");

        return (OK);
} /* l2cap_read_node_flags */

/* Send read_debug_level command to the node */
static int
l2cap_read_debug_level(int s, int argc, char **argv)
{
        struct ng_btsocket_l2cap_raw_node_debug r;

        memset(&r, 0, sizeof(r));
        if (ioctl(s, SIOC_L2CAP_NODE_GET_DEBUG, &r, sizeof(r)) < 0)
                return (ERROR);

        fprintf(stdout, "Debug level: %d\n", r.debug);

        return (OK);
} /* l2cap_read_debug_level */

/* Send write_debug_level command to the node */
static int
l2cap_write_debug_level(int s, int argc, char **argv)
{
        struct ng_btsocket_l2cap_raw_node_debug r;

        memset(&r, 0, sizeof(r));
        switch (argc) {
        case 1:
                r.debug = atoi(argv[0]);
                break;

        default:
                return (USAGE);
        }

        if (ioctl(s, SIOC_L2CAP_NODE_SET_DEBUG, &r, sizeof(r)) < 0)
                return (ERROR);

        return (OK);
} /* l2cap_write_debug_level */

/* Send read_connection_list command to the node */
static int
l2cap_read_connection_list(int s, int argc, char **argv)
{
        static char const * const       state[] = {
                /* NG_L2CAP_CON_CLOSED */       "CLOSED",
                /* NG_L2CAP_W4_LP_CON_CFM */    "W4_LP_CON_CFM",
                /* NG_L2CAP_CON_OPEN */         "OPEN"
        };
#define con_state2str(x)        ((x) >= SIZE(state)? "UNKNOWN" : state[(x)])

        struct ng_btsocket_l2cap_raw_con_list   r;
        int                                     n, error = OK;

        memset(&r, 0, sizeof(r));
        r.num_connections = NG_L2CAP_MAX_CON_NUM;
        r.connections = calloc(NG_L2CAP_MAX_CON_NUM,
                                sizeof(ng_l2cap_node_con_ep));
        if (r.connections == NULL) {
                errno = ENOMEM;
                return (ERROR);
        }

        if (ioctl(s, SIOC_L2CAP_NODE_GET_CON_LIST, &r, sizeof(r)) < 0) {
                error = ERROR;
                goto out;
        }

        fprintf(stdout, "L2CAP connections:\n");
        fprintf(stdout, 
"Remote BD_ADDR    Handle Flags Pending State\n");
        for (n = 0; n < r.num_connections; n++) {
                fprintf(stdout,
                        "%-17.17s " \
                        "%6d " \
                        "%c%c%c%c%c " \
                        "%7d " \
                        "%s\n",
                        bdaddrpr(&r.connections[n].remote),
                        r.connections[n].con_handle, 
                        ((r.connections[n].flags & NG_L2CAP_CON_OUTGOING)? 'O' : 'I'),
                        ((r.connections[n].flags & NG_L2CAP_CON_LP_TIMO)? 'L' : ' '),
                        ((r.connections[n].flags & NG_L2CAP_CON_AUTO_DISCON_TIMO)? 'D' : ' '),
                        ((r.connections[n].flags & NG_L2CAP_CON_TX)? 'T' : ' '),
                        ((r.connections[n].flags & NG_L2CAP_CON_RX)? 'R' : ' '),
                        r.connections[n].pending,
                        con_state2str(r.connections[n].state));
        }
out:
        free(r.connections);

        return (error);
} /* l2cap_read_connection_list */

/* Send read_channel_list command to the node */
static int
l2cap_read_channel_list(int s, int argc, char **argv)
{
        static char const * const       state[] = {
                /* NG_L2CAP_CLOSED */                   "CLOSED",
                /* NG_L2CAP_W4_L2CAP_CON_RSP */         "W4_L2CAP_CON_RSP",
                /* NG_L2CAP_W4_L2CA_CON_RSP */          "W4_L2CA_CON_RSP",
                /* NG_L2CAP_CONFIG */                   "CONFIG",
                /* NG_L2CAP_OPEN */                     "OPEN",
                /* NG_L2CAP_W4_L2CAP_DISCON_RSP */      "W4_L2CAP_DISCON_RSP",
                /* NG_L2CAP_W4_L2CA_DISCON_RSP */       "W4_L2CA_DISCON_RSP"
        };
#define ch_state2str(x) ((x) >= SIZE(state)? "UNKNOWN" : state[(x)])

        struct ng_btsocket_l2cap_raw_chan_list  r;
        int                                     n, error = OK;

        memset(&r, 0, sizeof(r));
        r.num_channels = NG_L2CAP_MAX_CHAN_NUM;
        r.channels = calloc(NG_L2CAP_MAX_CHAN_NUM,
                                sizeof(ng_l2cap_node_chan_ep));
        if (r.channels == NULL) {
                errno = ENOMEM;
                return (ERROR);
        }

        if (ioctl(s, SIOC_L2CAP_NODE_GET_CHAN_LIST, &r, sizeof(r)) < 0) {
                error = ERROR;
                goto out;
        }

        fprintf(stdout, "L2CAP channels:\n");
        fprintf(stdout, 
"Remote BD_ADDR     SCID/ DCID   PSM  IMTU/ OMTU State\n");
        for (n = 0; n < r.num_channels; n++) {
                fprintf(stdout,
                        "%-17.17s " \
                        "%5d/%5d %5d " \
                        "%5d/%5d " \
                        "%s\n",
                        bdaddrpr(&r.channels[n].remote),
                        r.channels[n].scid, r.channels[n].dcid,
                        r.channels[n].psm, r.channels[n].imtu,
                        r.channels[n].omtu,
                        ch_state2str(r.channels[n].state));
        }
out:
        free(r.channels);

        return (error);
} /* l2cap_read_channel_list */

/* Send read_auto_disconnect_timeout command to the node */
static int
l2cap_read_auto_disconnect_timeout(int s, int argc, char **argv)
{
        struct ng_btsocket_l2cap_raw_auto_discon_timo   r;

        memset(&r, 0, sizeof(r));
        if (ioctl(s, SIOC_L2CAP_NODE_GET_AUTO_DISCON_TIMO, &r, sizeof(r)) < 0)
                return (ERROR);

        if (r.timeout != 0)
                fprintf(stdout, "Auto disconnect timeout: %d sec\n", r.timeout);
        else
                fprintf(stdout, "Auto disconnect disabled\n");

        return (OK);
} /* l2cap_read_auto_disconnect_timeout */

/* Send write_auto_disconnect_timeout command to the node */
static int
l2cap_write_auto_disconnect_timeout(int s, int argc, char **argv)
{
        struct ng_btsocket_l2cap_raw_auto_discon_timo   r;

        memset(&r, 0, sizeof(r));
        switch (argc) {
        case 1:
                r.timeout = atoi(argv[0]);
                break;

        default:
                return (USAGE);
        }

        if (ioctl(s, SIOC_L2CAP_NODE_SET_AUTO_DISCON_TIMO, &r, sizeof(r)) < 0)
                return (ERROR);

        return (OK);
} /* l2cap_write_auto_disconnect_timeout */

struct l2cap_command    l2cap_commands[] = {
{
"read_node_flags",
"Get L2CAP node flags",
&l2cap_read_node_flags
},
{
"read_debug_level",
"Get L2CAP node debug level",
&l2cap_read_debug_level
},
{
"write_debug_level <level>",
"Set L2CAP node debug level",
&l2cap_write_debug_level
},
{
"read_connection_list",
"Read list of the L2CAP connections",
&l2cap_read_connection_list
},
{
"read_channel_list",
"Read list of the L2CAP channels",
&l2cap_read_channel_list
},
{
"read_auto_disconnect_timeout",
"Get L2CAP node auto disconnect timeout (in sec)",
&l2cap_read_auto_disconnect_timeout
},
{
"write_auto_disconnect_timeout <timeout>",
"Set L2CAP node auto disconnect timeout (in sec)",
&l2cap_write_auto_disconnect_timeout
},
{
NULL,
}};