/* $NetBSD: profile.c,v 1.4 2007/11/09 20:08:41 plunky Exp $ */
/* $DragonFly: src/usr.sbin/sdpd/profile.c,v 1.1 2008/01/06 21:51:30 hasso Exp $ */

/*
 * profile.c
 *
 * Copyright (c) 2004 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: profile.c,v 1.2 2007/11/30 07:39:37 griffin Exp $
 * $FreeBSD: src/usr.sbin/bluetooth/sdpd/profile.c,v 1.2 2004/07/28 07:15:44 kan Exp $
 */

#include <sys/queue.h>
#include <sys/utsname.h>
#include <bluetooth.h>
#include <sdp.h>
#include <string.h>
#include "profile.h"
#include "provider.h"

/*
 * Lookup profile descriptor
 */

profile_p
profile_get_descriptor(uint16_t uuid)
{
        extern  profile_t       dun_profile_descriptor;
        extern  profile_t       ftrn_profile_descriptor;
        extern  profile_t       hf_profile_descriptor;
        extern  profile_t       hset_profile_descriptor;
        extern  profile_t       irmc_profile_descriptor;
        extern  profile_t       irmc_command_profile_descriptor;
        extern  profile_t       lan_profile_descriptor;
        extern  profile_t       opush_profile_descriptor;
        extern  profile_t       sp_profile_descriptor;

        static const profile_p  profiles[] = {
                &dun_profile_descriptor,
                &ftrn_profile_descriptor,
                &hf_profile_descriptor,
                &hset_profile_descriptor,
                &irmc_profile_descriptor,
                &irmc_command_profile_descriptor,
                &lan_profile_descriptor,
                &opush_profile_descriptor,
                &sp_profile_descriptor
        };

        int32_t                 i;

        for (i = 0; i < sizeof(profiles)/sizeof(profiles[0]); i++)
                if (profiles[i]->uuid[0] == uuid)
                        return (profiles[i]);

        return (NULL);
}

/*
 * Look attribute in the profile descripror
 */

profile_attr_create_p
profile_get_attr(const profile_p profile, uint16_t attr)
{
        attr_t const    *ad = (attr_t const *) profile->attrs;

        for (; ad->create != NULL; ad ++)
                if (ad->attr == attr)
                        return (ad->create);

        return (NULL);
}

/*
 * uint32 value32 - 5 bytes
 */

int32_t
common_profile_create_service_record_handle(
        uint8_t *buf, uint8_t const * const eob,
        uint8_t const *data, uint32_t datalen)
{
        if (buf + 5 > eob)
                return (-1);

        SDP_PUT8(SDP_DATA_UINT32, buf);
        SDP_PUT32(((provider_t const *) data)->handle, buf);

        return (5);
}

/*
 * seq8 len8                    - 2 bytes
 *      uuid16 value16          - 3 bytes
 *      [ uuid16 value ]
 */

int32_t
common_profile_create_service_class_id_list(
                uint8_t *buf, uint8_t const * const eob,
                uint8_t const *data, uint32_t datalen)
{
        int32_t len = 3 * (datalen >>= 1);

        if (len <= 0 || len > 0xff || buf + 2 + len > eob)
                return (-1);

        SDP_PUT8(SDP_DATA_SEQ8, buf);
        SDP_PUT8(len, buf);

        for (; datalen > 0; datalen --) {
                SDP_PUT8(SDP_DATA_UUID16, buf);
                SDP_PUT16(*((uint16_t const *)data), buf);
                data += sizeof(uint16_t);
        }

        return (2 + len);
}

/*
 * seq8 len8                    - 2 bytes
 *      seq 8 len8              - 2 bytes
 *              uuid16 value16  - 3 bytes
 *              uint16 value16  - 3 bytes
 *      [ seq 8 len8
 *              uuid16 value16
 *              uint16 value16 ]
 */

int32_t
common_profile_create_bluetooth_profile_descriptor_list(
                uint8_t *buf, uint8_t const * const eob,
                uint8_t const *data, uint32_t datalen)
{
        int32_t len = 8 * (datalen >>= 2);

        if (len <= 0 || len > 0xff || buf + 2 + len > eob)
                return (-1);

        SDP_PUT8(SDP_DATA_SEQ8, buf);
        SDP_PUT8(len, buf);

        for (; datalen > 0; datalen --) {
                SDP_PUT8(SDP_DATA_SEQ8, buf);
                SDP_PUT8(6, buf);
                SDP_PUT8(SDP_DATA_UUID16, buf);
                SDP_PUT16(*((uint16_t const *)data), buf);
                data += sizeof(uint16_t);
                SDP_PUT8(SDP_DATA_UINT16, buf);
                SDP_PUT16(*((uint16_t const *)data), buf);
                data += sizeof(uint16_t);
        }

        return (2 + len);
}

/*
 * seq8 len8            - 2 bytes
 *      uint16 value16  - 3 bytes
 *      uint16 value16  - 3 bytes
 *      uint16 value16  - 3 bytes
 */

int32_t
common_profile_create_language_base_attribute_id_list(
                uint8_t *buf, uint8_t const * const eob,
                uint8_t const *data, uint32_t datalen)
{
        if (buf + 11 > eob)
                return (-1);

        SDP_PUT8(SDP_DATA_SEQ8, buf);
        SDP_PUT8(9, buf);

        /*
         * Language code per ISO 639:1988. Use "en".
         */

        SDP_PUT8(SDP_DATA_UINT16, buf);
        SDP_PUT16(((0x65 << 8) | 0x6e), buf);

        /*
         * Encoding. Recommended is UTF-8. ISO639 UTF-8 MIBenum is 106
         * (http://www.iana.org/assignments/character-sets)
         */

        SDP_PUT8(SDP_DATA_UINT16, buf);
        SDP_PUT16(106, buf);

        /*
         * Offset (Primary Language Base is 0x100)
         */

        SDP_PUT8(SDP_DATA_UINT16, buf);
        SDP_PUT16(SDP_ATTR_PRIMARY_LANGUAGE_BASE_ID, buf);

        return (11);
}

/*
 * Use Operating System name as provider name
 */

int32_t
common_profile_create_service_provider_name(
                uint8_t *buf, uint8_t const * const eob,
                uint8_t const *data, uint32_t datalen)
{
        struct utsname u;
        char const *name;

        if (uname(&u) < 0)
                name = "Unknown";
        else
                name = u.sysname;

        return (common_profile_create_string8(buf, eob,
                        (uint8_t const *)name, strlen(name)));
}

/*
 * str8 len8 string
 */

int32_t
common_profile_create_string8(
                uint8_t *buf, uint8_t const * const eob,
                uint8_t const *data, uint32_t datalen)
{
        if (datalen == 0 || datalen > 0xff || buf + 2 + datalen > eob)
                return (-1);

        SDP_PUT8(SDP_DATA_STR8, buf);
        SDP_PUT8(datalen, buf);
        memcpy(buf, data, datalen);

        return (2 + datalen);
}

/*
 * seq8 len8                    - 2 bytes
 *      seq8 len8               - 2 bytes
 *              uuid16 value16  - 3 bytes
 *      seq8 len8               - 2 bytes
 *              uuid16 value16  - 3 bytes
 *              uint8 value8    - 2 bytes
 */

int32_t
rfcomm_profile_create_protocol_descriptor_list(
                uint8_t *buf, uint8_t const * const eob,
                uint8_t const *data, uint32_t datalen)
{
        if (datalen != 1 || buf + 14 > eob)
                return (-1);

        SDP_PUT8(SDP_DATA_SEQ8, buf);
        SDP_PUT8(12, buf);

        SDP_PUT8(SDP_DATA_SEQ8, buf);
        SDP_PUT8(3, buf);
        SDP_PUT8(SDP_DATA_UUID16, buf);
        SDP_PUT16(SDP_UUID_PROTOCOL_L2CAP, buf);

        SDP_PUT8(SDP_DATA_SEQ8, buf);
        SDP_PUT8(5, buf);
        SDP_PUT8(SDP_DATA_UUID16, buf);
        SDP_PUT16(SDP_UUID_PROTOCOL_RFCOMM, buf);
        SDP_PUT8(SDP_DATA_UINT8, buf);
        SDP_PUT8(*data, buf);

        return (14);
}

/*
 * seq8 len8                    - 2 bytes
 *      seq8 len8               - 2 bytes
 *              uuid16 value16  - 3 bytes
 *      seq8 len8               - 2 bytes
 *              uuid16 value16  - 3 bytes
 *              uint8 value8    - 2 bytes
 *      seq8 len8               - 2 bytes
 *              uuid16 value16  - 3 bytes
 */

int32_t
obex_profile_create_protocol_descriptor_list(
                uint8_t *buf, uint8_t const * const eob,
                uint8_t const *data, uint32_t datalen)
{
        if (datalen != 1 || buf + 19 > eob)
                return (-1);

        SDP_PUT8(SDP_DATA_SEQ8, buf);
        SDP_PUT8(17, buf);

        SDP_PUT8(SDP_DATA_SEQ8, buf);
        SDP_PUT8(3, buf);
        SDP_PUT8(SDP_DATA_UUID16, buf);
        SDP_PUT16(SDP_UUID_PROTOCOL_L2CAP, buf);

        SDP_PUT8(SDP_DATA_SEQ8, buf);
        SDP_PUT8(5, buf);
        SDP_PUT8(SDP_DATA_UUID16, buf);
        SDP_PUT16(SDP_UUID_PROTOCOL_RFCOMM, buf);
        SDP_PUT8(SDP_DATA_UINT8, buf);
        SDP_PUT8(*data, buf);

        SDP_PUT8(SDP_DATA_SEQ8, buf);
        SDP_PUT8(3, buf);
        SDP_PUT8(SDP_DATA_UUID16, buf);
        SDP_PUT16(SDP_UUID_PROTOCOL_OBEX, buf);

        return (19);
}

/*
 * seq8 len8
 *      uint8 value8    - bytes
 *      [ uint8 value 8 ]
 */

int32_t
obex_profile_create_supported_formats_list(
                uint8_t *buf, uint8_t const * const eob,
                uint8_t const *data, uint32_t datalen)
{
        int32_t len = 2 * datalen;

        if (len <= 0 || len > 0xff || buf + 2 + len > eob)
                return (-1);

        SDP_PUT8(SDP_DATA_SEQ8, buf);
        SDP_PUT8(len, buf);

        for (; datalen > 0; datalen --) {
                SDP_PUT8(SDP_DATA_UINT8, buf);
                SDP_PUT8(*data++, buf);
        }

        return (2 + len);
}

/*
 * verify server channel number (the first byte in the data)
 */

int32_t
common_profile_server_channel_valid(uint8_t const *data, uint32_t datalen)
{
        if (data[0] < 1 || data[0] > 30)
                return (0);

        return (1);
}

/*
 * verify server channel number and supported_formats_size
 * sdp_opush_profile and sdp_irmc_profile
 */

int32_t
obex_profile_data_valid(uint8_t const *data, uint32_t datalen)
{
        sdp_opush_profile_t const *opush = (sdp_opush_profile_t const *) data;

        if (opush->server_channel < 1 ||
            opush->server_channel > 30 ||
            opush->supported_formats_size == 0 ||
            opush->supported_formats_size > sizeof(opush->supported_formats))
                return (0);

        return (1);
}