stack/pan/pan_utils.c

/******************************************************************************
 *
 *  Copyright (C) 1999-2012 Broadcom Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

/*****************************************************************************
 *
 *  This file contains main functions to support PAN profile
 *  commands and events.
 *
 *****************************************************************************/

#include <string.h>
#include <stdio.h>
#include "bt_common.h"
#include "bnep_api.h"
#include "pan_api.h"
#include "pan_int.h"
#include "sdp_api.h"
#include "sdpdefs.h"
#include "l2c_api.h"
#include "hcidefs.h"
#include "btm_api.h"


static const UINT8 pan_proto_elem_data[]   = {
                                   0x35, 0x18,          /* data element sequence of length 0x18 bytes */
                                   0x35, 0x06,          /* data element sequence for L2CAP descriptor */
                                   0x19, 0x01, 0x00,    /* UUID for L2CAP - 0x0100 */
                                   0x09, 0x00, 0x0F,    /* PSM for BNEP - 0x000F */
                                   0x35, 0x0E,          /* data element seqence for BNEP descriptor */
                                   0x19, 0x00, 0x0F,    /* UUID for BNEP - 0x000F */
                                   0x09, 0x01, 0x00,    /* BNEP specific parameter 0 -- Version of BNEP = version 1 = 0x0001 */
                                   0x35, 0x06,          /* BNEP specific parameter 1 -- Supported network packet type list */
                                   0x09, 0x08, 0x00,    /* network packet type IPv4 = 0x0800 */
                                   0x09, 0x08, 0x06     /* network packet type ARP  = 0x0806 */
};

/*******************************************************************************
**
** Function         pan_register_with_sdp
**
** Description
**
** Returns
**
*******************************************************************************/
UINT32 pan_register_with_sdp (UINT16 uuid, UINT8 sec_mask, char *p_name, char *p_desc)
{
    UINT32  sdp_handle;
    UINT16  browse_list = UUID_SERVCLASS_PUBLIC_BROWSE_GROUP;
    UINT16  security = 0;
    UINT32  proto_len = (UINT32)pan_proto_elem_data[1];

    /* Create a record */
    sdp_handle = SDP_CreateRecord ();

    if (sdp_handle == 0)
    {
        PAN_TRACE_ERROR ("PAN_SetRole - could not create SDP record");
        return 0;
    }

    /* Service Class ID List */
    SDP_AddServiceClassIdList (sdp_handle, 1, &uuid);

    /* Add protocol element sequence from the constant string */
    SDP_AddAttribute (sdp_handle, ATTR_ID_PROTOCOL_DESC_LIST, DATA_ELE_SEQ_DESC_TYPE,
                      proto_len, (UINT8 *)(pan_proto_elem_data+2));

#if 0
    availability = 0xFF;
    SDP_AddAttribute (sdp_handle, ATTR_ID_SERVICE_AVAILABILITY, UINT_DESC_TYPE, 1, &availability);
#endif

    /* Language base */
    SDP_AddLanguageBaseAttrIDList (sdp_handle, LANG_ID_CODE_ENGLISH, LANG_ID_CHAR_ENCODE_UTF8, LANGUAGE_BASE_ID);

    /* Profile descriptor list */
    SDP_AddProfileDescriptorList (sdp_handle, uuid, PAN_PROFILE_VERSION);

    /* Service Name */
    SDP_AddAttribute (sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE,
                        (UINT8) (strlen(p_name) + 1), (UINT8 *)p_name);

    /* Service description */
    SDP_AddAttribute (sdp_handle, ATTR_ID_SERVICE_DESCRIPTION, TEXT_STR_DESC_TYPE,
                        (UINT8) (strlen(p_desc) + 1), (UINT8 *)p_desc);

    /* Security description */
    if (sec_mask)
    {
        UINT16_TO_BE_FIELD(&security, 0x0001);
    }
    SDP_AddAttribute (sdp_handle, ATTR_ID_SECURITY_DESCRIPTION, UINT_DESC_TYPE, 2, (UINT8 *)&security);

#if (defined (PAN_SUPPORTS_ROLE_NAP) && PAN_SUPPORTS_ROLE_NAP == TRUE)
    if (uuid == UUID_SERVCLASS_NAP)
    {
        UINT16  NetAccessType = 0x0005;      /* Ethernet */
        UINT32  NetAccessRate = 0x0001312D0; /* 10Mb/sec */
        UINT8   array[10], *p;

        /* Net access type. */
        p = array;
        UINT16_TO_BE_STREAM (p, NetAccessType);
        SDP_AddAttribute (sdp_handle, ATTR_ID_NET_ACCESS_TYPE, UINT_DESC_TYPE, 2, array);

        /* Net access rate. */
        p = array;
        UINT32_TO_BE_STREAM (p, NetAccessRate);
        SDP_AddAttribute (sdp_handle, ATTR_ID_MAX_NET_ACCESS_RATE, UINT_DESC_TYPE, 4, array);

        /* Register with Security Manager for the specific security level */
        if ((!BTM_SetSecurityLevel (TRUE, p_name, BTM_SEC_SERVICE_BNEP_NAP,
                                    sec_mask, BT_PSM_BNEP, BTM_SEC_PROTO_BNEP, UUID_SERVCLASS_NAP))
         || (!BTM_SetSecurityLevel (FALSE, p_name, BTM_SEC_SERVICE_BNEP_NAP,
                                    sec_mask, BT_PSM_BNEP, BTM_SEC_PROTO_BNEP, UUID_SERVCLASS_NAP)))
        {
            PAN_TRACE_ERROR ("PAN Security Registration failed for PANU");
        }
    }
#endif
#if (defined (PAN_SUPPORTS_ROLE_GN) && PAN_SUPPORTS_ROLE_GN == TRUE)
    if (uuid == UUID_SERVCLASS_GN)
    {
        if ((!BTM_SetSecurityLevel (TRUE, p_name, BTM_SEC_SERVICE_BNEP_GN,
                                    sec_mask, BT_PSM_BNEP, BTM_SEC_PROTO_BNEP, UUID_SERVCLASS_GN))
         || (!BTM_SetSecurityLevel (FALSE, p_name, BTM_SEC_SERVICE_BNEP_GN,
                                    sec_mask, BT_PSM_BNEP, BTM_SEC_PROTO_BNEP, UUID_SERVCLASS_GN)))
        {
            PAN_TRACE_ERROR ("PAN Security Registration failed for GN");
        }
    }
#endif
#if (defined (PAN_SUPPORTS_ROLE_PANU) && PAN_SUPPORTS_ROLE_PANU == TRUE)
    if (uuid == UUID_SERVCLASS_PANU)
    {
        if ((!BTM_SetSecurityLevel (TRUE, p_name, BTM_SEC_SERVICE_BNEP_PANU,
                                    sec_mask, BT_PSM_BNEP, BTM_SEC_PROTO_BNEP, UUID_SERVCLASS_PANU))
         || (!BTM_SetSecurityLevel (FALSE, p_name, BTM_SEC_SERVICE_BNEP_PANU,
                                    sec_mask, BT_PSM_BNEP, BTM_SEC_PROTO_BNEP, UUID_SERVCLASS_PANU)))
        {
            PAN_TRACE_ERROR ("PAN Security Registration failed for PANU");
        }
    }
#endif

    /* Make the service browsable */
    SDP_AddUuidSequence (sdp_handle,  ATTR_ID_BROWSE_GROUP_LIST, 1, &browse_list);


    return sdp_handle;
}



/*******************************************************************************
**
** Function         pan_allocate_pcb
**
** Description
**
** Returns
**
*******************************************************************************/
tPAN_CONN *pan_allocate_pcb (BD_ADDR p_bda, UINT16 handle)
{
    UINT16      i;

    for (i=0; i<MAX_PAN_CONNS; i++)
    {
        if (pan_cb.pcb[i].con_state != PAN_STATE_IDLE &&
            pan_cb.pcb[i].handle == handle)
            return NULL;
    }

    for (i=0; i<MAX_PAN_CONNS; i++)
    {
        if (pan_cb.pcb[i].con_state != PAN_STATE_IDLE &&
            memcmp (pan_cb.pcb[i].rem_bda, p_bda, BD_ADDR_LEN) == 0)
            return NULL;
    }

    for (i=0; i<MAX_PAN_CONNS; i++)
    {
        if (pan_cb.pcb[i].con_state == PAN_STATE_IDLE)
        {
            memset (&(pan_cb.pcb[i]), 0, sizeof (tPAN_CONN));
            memcpy (pan_cb.pcb[i].rem_bda, p_bda, BD_ADDR_LEN);
            pan_cb.pcb[i].handle = handle;
            return &(pan_cb.pcb[i]);
        }
    }
    return NULL;
}


/*******************************************************************************
**
** Function         pan_get_pcb_by_handle
**
** Description
**
** Returns
**
*******************************************************************************/
tPAN_CONN *pan_get_pcb_by_handle (UINT16 handle)
{
    UINT16      i;

    for (i=0; i<MAX_PAN_CONNS; i++)
    {
        if (pan_cb.pcb[i].con_state != PAN_STATE_IDLE &&
            pan_cb.pcb[i].handle == handle)
            return &(pan_cb.pcb[i]);
    }

    return NULL;
}


/*******************************************************************************
**
** Function         pan_get_pcb_by_addr
**
** Description
**
** Returns
**
*******************************************************************************/
tPAN_CONN *pan_get_pcb_by_addr (BD_ADDR p_bda)
{
    UINT16      i;

    for (i=0; i<MAX_PAN_CONNS; i++)
    {
        if (pan_cb.pcb[i].con_state == PAN_STATE_IDLE)
            continue;

        if (memcmp (pan_cb.pcb[i].rem_bda, p_bda, BD_ADDR_LEN) == 0)
            return &(pan_cb.pcb[i]);

        /*
        if (pan_cb.pcb[i].mfilter_present &&
            (memcmp (p_bda, pan_cb.pcb[i].multi_cast_bridge, BD_ADDR_LEN) == 0))
            return &(pan_cb.pcb[i]);
        */
    }

    return NULL;
}




/*******************************************************************************
**
** Function         pan_close_all_connections
**
** Description
**
** Returns          void
**
*******************************************************************************/
void pan_close_all_connections (void)
{
    UINT16      i;

    for (i=0; i<MAX_PAN_CONNS; i++)
    {
        if (pan_cb.pcb[i].con_state != PAN_STATE_IDLE)
        {
            BNEP_Disconnect (pan_cb.pcb[i].handle);
            pan_cb.pcb[i].con_state = PAN_STATE_IDLE;
        }
    }

    pan_cb.active_role = PAN_ROLE_INACTIVE;
    pan_cb.num_conns   = 0;
    return;
}


/*******************************************************************************
**
** Function         pan_release_pcb
**
** Description      This function releases a PCB.
**
** Returns          void
**
*******************************************************************************/
void pan_release_pcb (tPAN_CONN *p_pcb)
{
    /* Drop any response pointer we may be holding */
    memset (p_pcb, 0, sizeof (tPAN_CONN));
    p_pcb->con_state = PAN_STATE_IDLE;
}


/*******************************************************************************
**
** Function         pan_dump_status
**
** Description      This function dumps the pan control block and connection
**                  blocks information
**
** Returns          none
**
*******************************************************************************/
void pan_dump_status (void)
{
#if (defined (PAN_SUPPORTS_DEBUG_DUMP) && PAN_SUPPORTS_DEBUG_DUMP == TRUE)
    UINT16          i;
    char            buff[200];
    tPAN_CONN      *p_pcb;

    PAN_TRACE_DEBUG ("PAN role %x, active role %d, num_conns %d",
        pan_cb.role, pan_cb.active_role, pan_cb.num_conns);

    for (i = 0, p_pcb = pan_cb.pcb; i < MAX_PAN_CONNS; i++, p_pcb++)
    {
        sprintf (buff, "%d state %d, handle %d, src 0x%x, dst 0x%x, BD %x.%x.%x.%x.%x.%x",
            i, p_pcb->con_state, p_pcb->handle, p_pcb->src_uuid, p_pcb->dst_uuid,
            p_pcb->rem_bda[0], p_pcb->rem_bda[1], p_pcb->rem_bda[2],
            p_pcb->rem_bda[3], p_pcb->rem_bda[4], p_pcb->rem_bda[5]);

        PAN_TRACE_DEBUG (buff);
    }
#endif
}