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Diffstat (limited to 'stack/gatt/gatt_db.c')
| -rw-r--r-- | stack/gatt/gatt_db.c | 1130 |
1 files changed, 1130 insertions, 0 deletions
diff --git a/stack/gatt/gatt_db.c b/stack/gatt/gatt_db.c new file mode 100644 index 0000000..bd94e50 --- /dev/null +++ b/stack/gatt/gatt_db.c @@ -0,0 +1,1130 @@ +/****************************************************************************** + * + * Copyright (C) 2009-2012 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 GATT database building and query functions + * + ******************************************************************************/ + +#include "bt_target.h" + +#if BLE_INCLUDED == TRUE + +#include "bt_trace.h" + +#include <stdio.h> +#include <string.h> +#include "gatt_int.h" +#include "l2c_api.h" + +/******************************************************************************** +** L O C A L F U N C T I O N P R O T O T Y P E S * +*********************************************************************************/ +static BOOLEAN allocate_svc_db_buf(tGATT_SVC_DB *p_db); +static void *allocate_attr_in_db(tGATT_SVC_DB *p_db, UINT16 uuid16, UINT8 *p_uuid128, tGATT_PERM perm); +static BOOLEAN deallocate_attr_in_db(tGATT_SVC_DB *p_db, void *p_attr); +static BOOLEAN copy_extra_byte_in_db(tGATT_SVC_DB *p_db, void **p_dst, UINT16 len); + +static void gatts_db_add_service_declaration(tGATT_SVC_DB *p_db, tBT_UUID service, BOOLEAN is_pri); +static tGATT_STATUS gatts_send_app_read_request(tGATT_TCB *p_tcb, UINT8 op_code, + UINT16 handle, UINT16 offset, UINT32 trans_id); + +/******************************************************************************* +** +** Function gatts_init_service_db +** +** Description This function initialize a memory space to be a service database. +** +** Parameter p_db: database pointer. +** len: size of the memory space. +** +** Returns Status of te operation. +** +*******************************************************************************/ +BOOLEAN gatts_init_service_db (tGATT_SVC_DB *p_db, tBT_UUID service, BOOLEAN is_pri, + UINT16 s_hdl, UINT16 num_handle) +{ + if (!allocate_svc_db_buf(p_db)) + { + GATT_TRACE_ERROR0("gatts_init_service_db failed, no resources"); + return FALSE; + } + + GATT_TRACE_DEBUG0("gatts_init_service_db"); + GATT_TRACE_DEBUG2("s_hdl = %d num_handle = %d", s_hdl, num_handle ); + + /* update service database information */ + p_db->next_handle = s_hdl; + p_db->end_handle = s_hdl + num_handle; + + gatts_db_add_service_declaration(p_db, service, is_pri); + + return TRUE; +} + +/******************************************************************************* +** +** Function gatts_init_service_db +** +** Description This function initialize a memory space to be a service database. +** +** Parameter p_db: database pointer. +** len: size of the memory space. +** +** Returns Status of te operation. +** +*******************************************************************************/ +tBT_UUID * gatts_get_service_uuid (tGATT_SVC_DB *p_db) +{ + if (!p_db || !p_db->p_attr_list) + { + GATT_TRACE_ERROR0("service DB empty"); + + return NULL; + } + else + { + return &((tGATT_ATTR16 *)p_db->p_attr_list)->p_value->uuid; + } +} + +/******************************************************************************* +** +** Function gatts_check_attr_readability +** +** Description check attribute readability +** +** Returns status of operation. +** +*******************************************************************************/ +static tGATT_STATUS gatts_check_attr_readability(tGATT_ATTR16 *p_attr, + UINT16 offset, + BOOLEAN read_long, + tGATT_SEC_FLAG sec_flag, + UINT8 key_size) +{ + UINT16 min_key_size; + tGATT_PERM perm = p_attr->permission; + + min_key_size = (((perm & GATT_ENCRYPT_KEY_SIZE_MASK) >> 12)); + if (min_key_size != 0 ) + { + min_key_size +=6; + } + + if (!(perm & GATT_READ_ALLOWED)) + { + GATT_TRACE_ERROR0( "GATT_READ_NOT_PERMIT"); + return GATT_READ_NOT_PERMIT; + } + + if ((perm & GATT_READ_AUTH_REQUIRED ) && !(sec_flag & GATT_SEC_FLAG_LKEY_UNAUTHED)) + { + GATT_TRACE_ERROR0( "GATT_INSUF_AUTHENTICATION"); + return GATT_INSUF_AUTHENTICATION; + } + + if ((perm & GATT_READ_MITM_REQUIRED ) && !(sec_flag & GATT_SEC_FLAG_LKEY_AUTHED)) + { + GATT_TRACE_ERROR0( "GATT_INSUF_AUTHENTICATION: MITM Required"); + return GATT_INSUF_AUTHENTICATION; + } + + if ((perm & GATT_READ_ENCRYPTED_REQUIRED ) && !(sec_flag & GATT_SEC_FLAG_ENCRYPTED)) + { + GATT_TRACE_ERROR0( "GATT_INSUF_ENCRYPTION"); + return GATT_INSUF_ENCRYPTION; + } + + if ( (perm & GATT_READ_ENCRYPTED_REQUIRED) && (sec_flag & GATT_SEC_FLAG_ENCRYPTED) && (key_size < min_key_size)) + { + GATT_TRACE_ERROR0( "GATT_INSUF_KEY_SIZE"); + return GATT_INSUF_KEY_SIZE; + } + + + if (read_long) + { + switch (p_attr->uuid) + { + case GATT_UUID_PRI_SERVICE: + case GATT_UUID_SEC_SERVICE: + case GATT_UUID_CHAR_DECLARE: + case GATT_UUID_INCLUDE_SERVICE: + case GATT_UUID_CHAR_EXT_PROP: + case GATT_UUID_CHAR_CLIENT_CONFIG: + case GATT_UUID_CHAR_SRVR_CONFIG: + case GATT_UUID_CHAR_PRESENT_FORMAT: + GATT_TRACE_ERROR0("GATT_NOT_LONG"); + return GATT_NOT_LONG; + + default: + break; + } + } + + return GATT_SUCCESS; +} + +/******************************************************************************* +** +** Function read_attr_value +** +** Description Utility function to read an attribute value. +** +** Parameter p_attr: pointer to the attribute to read. +** offset: read offset. +** p_value: output parameter to carry out the attribute value. +** p_len: output parameter to carry out the attribute length. +** read_long: this is a read blob request. +** mtu: MTU +** sec_flag: current link security status. +** key_size: encryption key size. +** +** Returns status of operation. +** +*******************************************************************************/ +static tGATT_STATUS read_attr_value (void *p_attr, + UINT16 offset, + UINT8 **p_data, + BOOLEAN read_long, + UINT16 mtu, + UINT16 *p_len, + tGATT_SEC_FLAG sec_flag, + UINT8 key_size) +{ + UINT16 len = 0, uuid16 = 0; + UINT8 *p = *p_data; + tGATT_STATUS status; + UINT16 read_long_uuid=0; + tGATT_ATTR16 *p_attr16 = (tGATT_ATTR16 *)p_attr; + + GATT_TRACE_DEBUG5("read_attr_value uuid=0x%04x perm=0x%0x sec_flag=0x%x offset=%d read_long=%d", + p_attr16->uuid, + p_attr16->permission, + sec_flag, + offset, + read_long); + + status = gatts_check_attr_readability((tGATT_ATTR16 *)p_attr, offset, read_long, sec_flag, key_size); + + if (p_attr16->uuid_type == GATT_ATTR_UUID_TYPE_16) + uuid16 = p_attr16->uuid; + + if (status != GATT_SUCCESS) + return status; + + status = GATT_NO_RESOURCES; + + if (read_long && + (uuid16 == GATT_UUID_CHAR_DESCRIPTION || uuid16 == GATT_UUID_CHAR_AGG_FORMAT)) + { + read_long_uuid = p_attr16->uuid; + } + + if (uuid16 == GATT_UUID_PRI_SERVICE || uuid16 == GATT_UUID_SEC_SERVICE) + { + len = p_attr16->p_value->uuid.len; + if (mtu >= p_attr16->p_value->uuid.len) + { + gatt_build_uuid_to_stream(&p, p_attr16->p_value->uuid); + status = GATT_SUCCESS; + } + } + else if (uuid16 == GATT_UUID_CHAR_DECLARE) + { + len = (((tGATT_ATTR16 *)(p_attr16->p_next))->uuid_type == GATT_ATTR_UUID_TYPE_16) ? 5 :19; + + if (mtu >= len) + { + UINT8_TO_STREAM(p, p_attr16->p_value->char_decl.property); + UINT16_TO_STREAM(p, p_attr16->p_value->char_decl.char_val_handle); + + if (((tGATT_ATTR16 *)(p_attr16->p_next))->uuid_type == GATT_ATTR_UUID_TYPE_16) + { + UINT16_TO_STREAM(p, ((tGATT_ATTR16 *)(p_attr16->p_next))->uuid); + } + else + { + ARRAY_TO_STREAM (p, ((tGATT_ATTR128 *)(p_attr16->p_next))->uuid, LEN_UUID_128); + } + status = GATT_SUCCESS; + } + + } + else if (uuid16 == GATT_UUID_INCLUDE_SERVICE) + { + len = (p_attr16->p_value->incl_handle.service_type.len == 2) ? 6 : 4; + if (mtu >= len) + { + UINT16_TO_STREAM(p, p_attr16->p_value->incl_handle.s_handle); + UINT16_TO_STREAM(p, p_attr16->p_value->incl_handle.e_handle); + + if (p_attr16->p_value->incl_handle.service_type.len == 2) + { + UINT16_TO_STREAM(p, p_attr16->p_value->incl_handle.service_type.uu.uuid16); + } + status = GATT_SUCCESS; + } + } + else /* characteristic description or characteristic value */ + { + status = GATT_PENDING; + } + + *p_len = len; + *p_data = p; + return status; +} + +/******************************************************************************* +** +** Function gatts_db_read_attr_value_by_type +** +** Description Query attribute value by attribute type. +** +** Parameter p_db: pointer to the attribute database. +** p_rsp: Read By type response data. +** s_handle: starting handle of the range we are looking for. +** e_handle: ending handle of the range we are looking for. +** type: Attribute type. +** mtu: MTU. +** sec_flag: current link security status. +** key_size: encryption key size. +** +** Returns Status of the operation. +** +*******************************************************************************/ +tGATT_STATUS gatts_db_read_attr_value_by_type (tGATT_TCB *p_tcb, + tGATT_SVC_DB *p_db, + UINT8 op_code, + BT_HDR *p_rsp, + UINT16 s_handle, + UINT16 e_handle, + tBT_UUID type, + UINT16 *p_len, + tGATT_SEC_FLAG sec_flag, + UINT8 key_size, + UINT32 trans_id, + UINT16 *p_cur_handle) +{ + tGATT_STATUS status = GATT_NOT_FOUND; + tGATT_ATTR16 *p_attr; + UINT16 len = 0; + UINT8 *p = (UINT8 *)(p_rsp + 1) + p_rsp->len + L2CAP_MIN_OFFSET; + tBT_UUID attr_uuid; + + if (p_db && p_db->p_attr_list) + { + p_attr = (tGATT_ATTR16 *)p_db->p_attr_list; + + while (p_attr && p_attr->handle <= e_handle) + { + if (p_attr->uuid_type == GATT_ATTR_UUID_TYPE_16) + { + attr_uuid.len = LEN_UUID_16; + attr_uuid.uu.uuid16 = p_attr->uuid; + } + else + { + attr_uuid.len = LEN_UUID_128; + memcpy(attr_uuid.uu.uuid128, ((tGATT_ATTR128 *)p_attr)->uuid, LEN_UUID_128); + } + + if (p_attr->handle >= s_handle && gatt_uuid_compare(type, attr_uuid)) + { + if (*p_len <= 2) + { + status = GATT_NO_RESOURCES; + break; + } + + UINT16_TO_STREAM (p, p_attr->handle); + + status = read_attr_value ((void *)p_attr, 0, &p, FALSE, (UINT16)(*p_len -2), &len, sec_flag, key_size); + + if (status == GATT_PENDING) + { + status = gatts_send_app_read_request(p_tcb, op_code, p_attr->handle, 0, trans_id); + + /* one callback at a time */ + break; + } + else if (status == GATT_SUCCESS) + { + if (p_rsp->offset == 0) + p_rsp->offset = len + 2; + + if (p_rsp->offset == len + 2) + { + p_rsp->len += (len + 2); + *p_len -= (len + 2); + } + else + { + GATT_TRACE_ERROR0("format mismatch"); + status = GATT_NO_RESOURCES; + break; + } + } + else + { + *p_cur_handle = p_attr->handle; + break; + } + } + p_attr = (tGATT_ATTR16 *)p_attr->p_next; + } + } + + return status; +} + +/******************************************************************************* +** +** Function gatts_add_included_service +** +** Description This function adds an included service into a database. +** +** Parameter p_db: database pointer. +** inc_srvc_type: included service type. +** +** Returns Status of the operation. +** +*******************************************************************************/ +UINT16 gatts_add_included_service (tGATT_SVC_DB *p_db, UINT16 s_handle, UINT16 e_handle, + tBT_UUID service) +{ + tGATT_ATTR16 *p_attr; + + GATT_TRACE_DEBUG3("gatts_add_included_service: s_hdl = 0x%04x e_hdl = 0x%04x uuid = 0x%04x", + s_handle, e_handle, service.uu.uuid16); + + if (service.len == 0 || s_handle == 0 || e_handle == 0) + { + GATT_TRACE_ERROR0("gatts_add_included_service Illegal Params."); + return 0; + } + + if ((p_attr = (tGATT_ATTR16 *) allocate_attr_in_db(p_db, GATT_UUID_INCLUDE_SERVICE, NULL, GATT_PERM_READ)) != NULL) + { + if (copy_extra_byte_in_db(p_db, (void **)&p_attr->p_value, sizeof(tGATT_INCL_SRVC))) + { + p_attr->p_value->incl_handle.s_handle = s_handle; + p_attr->p_value->incl_handle.e_handle = e_handle; + memcpy(&p_attr->p_value->incl_handle.service_type, &service, sizeof(tBT_UUID)); + + return p_attr->handle; + } + else + { + deallocate_attr_in_db(p_db, p_attr); + } + } + + return 0; +} + +/******************************************************************************* +** +** Function gatts_add_characteristic +** +** Description This function add a characteristics and its descriptor into +** a servce identified by the service database pointer. +** +** Parameter p_db: database pointer. +** perm: permission (authentication and key size requirements) +** property: property of the characteristic. +** p_char: characteristic value information. +** +** Returns Status of te operation. +** +*******************************************************************************/ +UINT16 gatts_add_characteristic (tGATT_SVC_DB *p_db, tGATT_PERM perm, + tGATT_CHAR_PROP property, + tBT_UUID * p_char_uuid) +{ + tGATT_ATTR16 *p_char_decl, *p_char_val; + UINT16 uuid16 = (p_char_uuid->len == LEN_UUID_16) ? p_char_uuid->uu.uuid16 : 0; + + GATT_TRACE_DEBUG2("gatts_add_characteristic perm=0x%0x property=0x%0x", perm, property); + + if ((p_char_decl = (tGATT_ATTR16 *)allocate_attr_in_db(p_db, GATT_UUID_CHAR_DECLARE, NULL, GATT_PERM_READ)) != NULL) + { + if (!copy_extra_byte_in_db(p_db, (void **)&p_char_decl->p_value, sizeof(tGATT_CHAR_DECL))) + { + deallocate_attr_in_db(p_db, p_char_decl); + return 0; + } + + p_char_val = (tGATT_ATTR16 *)allocate_attr_in_db(p_db, uuid16, p_char_uuid->uu.uuid128, perm); + + if (p_char_val == NULL) + { + deallocate_attr_in_db(p_db, p_char_decl); + return 0; + } + + p_char_decl->p_value->char_decl.property = property; + p_char_decl->p_value->char_decl.char_val_handle = p_char_val->handle; + + p_char_val->p_value = NULL; + + return p_char_val->handle; + } + + return 0; +} + +/******************************************************************************* +** +** Function gatt_convertchar_descr_type +** +** Description This function convert a char descript UUID into descriptor type. +** +** Returns descriptor type. +** +*******************************************************************************/ +UINT8 gatt_convertchar_descr_type(tBT_UUID *p_descr_uuid) +{ + tBT_UUID std_descr = {LEN_UUID_16, {GATT_UUID_CHAR_EXT_PROP}}; + + if (gatt_uuid_compare(std_descr, * p_descr_uuid)) + return GATT_DESCR_EXT_DSCPTOR; + + std_descr.uu.uuid16 ++; + if (gatt_uuid_compare(std_descr, * p_descr_uuid)) + return GATT_DESCR_USER_DSCPTOR; + + std_descr.uu.uuid16 ++; + if (gatt_uuid_compare(std_descr, * p_descr_uuid)) + return GATT_DESCR_CLT_CONFIG; + + std_descr.uu.uuid16 ++; + if (gatt_uuid_compare(std_descr, * p_descr_uuid)) + return GATT_DESCR_SVR_CONFIG; + + std_descr.uu.uuid16 ++; + if (gatt_uuid_compare(std_descr, * p_descr_uuid)) + return GATT_DESCR_PRES_FORMAT; + + std_descr.uu.uuid16 ++; + if (gatt_uuid_compare(std_descr, * p_descr_uuid)) + return GATT_DESCR_AGGR_FORMAT; + + std_descr.uu.uuid16 ++; + if (gatt_uuid_compare(std_descr, * p_descr_uuid)) + return GATT_DESCR_VALID_RANGE; + + + return GATT_DESCR_UNKNOWN; +} + +/******************************************************************************* +** +** Function gatts_add_char_descr +** +** Description This function add a characteristics descriptor. +** +** Parameter p_db: database pointer. +** perm: characteristic descriptor permission type. +** char_dscp_tpye: the characteristic descriptor masks. +** p_dscp_params: characteristic descriptors values. +** +** Returns Status of the operation. +** +*******************************************************************************/ +UINT16 gatts_add_char_descr (tGATT_SVC_DB *p_db, tGATT_PERM perm, + tBT_UUID * p_descr_uuid) +{ + tGATT_ATTR16 *p_char_dscptr; + UINT16 uuid16 = (p_descr_uuid->len == LEN_UUID_16)? p_descr_uuid->uu.uuid16 : 0; + + GATT_TRACE_DEBUG1("gatts_add_char_descr uuid=0x%04x", p_descr_uuid->uu.uuid16); + + /* Add characteristic descriptors */ + if ((p_char_dscptr = (tGATT_ATTR16 *)allocate_attr_in_db(p_db, + uuid16, + p_descr_uuid->uu.uuid128, + perm)) + == NULL) + { + GATT_TRACE_DEBUG0("gatts_add_char_descr Fail for adding char descriptors."); + return 0; + } + else + { + return p_char_dscptr->handle; + } +} + +/*******************************************************************************/ +/* Service Attribute Database Query Utility Functions */ +/*******************************************************************************/ +/******************************************************************************* +** +** Function gatts_read_attr_value_by_handle +** +** Description Query attribute value by attribute handle. +** +** Parameter p_db: pointer to the attribute database. +** handle: Attribute handle to read. +** offset: Read offset. +** p_value: output parameter to carry out the attribute value. +** p_len: output parameter as attribute length read. +** read_long: this is a read blob request. +** mtu: MTU. +** sec_flag: current link security status. +** key_size: encryption key size +** +** Returns Status of operation. +** +*******************************************************************************/ +tGATT_STATUS gatts_read_attr_value_by_handle(tGATT_TCB *p_tcb, + tGATT_SVC_DB *p_db, + UINT8 op_code, + UINT16 handle, UINT16 offset, + UINT8 *p_value, UINT16 *p_len, + UINT16 mtu, + tGATT_SEC_FLAG sec_flag, + UINT8 key_size, + UINT32 trans_id) +{ + tGATT_STATUS status = GATT_NOT_FOUND; + tGATT_ATTR16 *p_attr; + UINT8 *pp = p_value; + + if (p_db && p_db->p_attr_list) + { + p_attr = (tGATT_ATTR16 *)p_db->p_attr_list; + + while (p_attr && handle >= p_attr->handle) + { + if (p_attr->handle == handle) + { + status = read_attr_value (p_attr, offset, &pp, + (BOOLEAN)(op_code == GATT_REQ_READ_BLOB), + mtu, p_len, sec_flag, key_size); + + if (status == GATT_PENDING) + { + status = gatts_send_app_read_request(p_tcb, op_code, p_attr->handle, offset, trans_id); + } + break; + } + p_attr = (tGATT_ATTR16 *)p_attr->p_next; + } + } + + return status; +} + +/******************************************************************************* +** +** Function gatts_read_attr_perm_check +** +** Description Check attribute readability. +** +** Parameter p_db: pointer to the attribute database. +** handle: Attribute handle to read. +** offset: Read offset. +** p_value: output parameter to carry out the attribute value. +** p_len: output parameter as attribute length read. +** read_long: this is a read blob request. +** mtu: MTU. +** sec_flag: current link security status. +** key_size: encryption key size +** +** Returns Status of operation. +** +*******************************************************************************/ +tGATT_STATUS gatts_read_attr_perm_check(tGATT_SVC_DB *p_db, + BOOLEAN is_long, + UINT16 handle, + tGATT_SEC_FLAG sec_flag, + UINT8 key_size) +{ + tGATT_STATUS status = GATT_NOT_FOUND; + tGATT_ATTR16 *p_attr; + + if (p_db && p_db->p_attr_list) + { + p_attr = (tGATT_ATTR16 *)p_db->p_attr_list; + + while (p_attr && handle >= p_attr->handle) + { + if (p_attr->handle == handle) + { + status = gatts_check_attr_readability (p_attr, 0, + is_long, + sec_flag, key_size); + break; + } + p_attr = (tGATT_ATTR16 *) p_attr->p_next; + } + } + + return status; +} +/******************************************************************************* +** +** Function gatts_write_attr_perm_check +** +** Description Write attribute value into database. +** +** Parameter p_db: pointer to the attribute database. +** op_code:op code of this write. +** handle: handle of the attribute to write. +** offset: Write offset if write op code is write blob. +** p_data: Attribute value to write. +** len: attribute data length. +** sec_flag: current link security status. +** key_size: encryption key size +** +** Returns Status of the operation. +** +*******************************************************************************/ +tGATT_STATUS gatts_write_attr_perm_check (tGATT_SVC_DB *p_db, UINT8 op_code, + UINT16 handle, UINT16 offset, UINT8 *p_data, + UINT16 len, tGATT_SEC_FLAG sec_flag, UINT8 key_size) +{ + tGATT_STATUS status = GATT_NOT_FOUND; + tGATT_ATTR16 *p_attr; + UINT16 max_size = 0; + tGATT_PERM perm; + UINT16 min_key_size; + + GATT_TRACE_DEBUG6( "gatts_write_attr_perm_check op_code=0x%0x handle=0x%04x offset=%d len=%d sec_flag=0x%0x key_size=%d", + op_code, handle, offset, len, sec_flag, key_size); + + if (p_db != NULL) + { + p_attr = (tGATT_ATTR16 *) p_db->p_attr_list; + + while (p_attr != NULL) + { + if (p_attr->handle == handle) + { + perm = p_attr->permission; + min_key_size = (((perm & GATT_ENCRYPT_KEY_SIZE_MASK) >> 12)); + if (min_key_size != 0 ) + { + min_key_size +=6; + } + GATT_TRACE_DEBUG2( "gatts_write_attr_perm_check p_attr->permission =0x%04x min_key_size==0x%04x", + p_attr->permission, + min_key_size); + + if ((op_code == GATT_CMD_WRITE) && (perm & GATT_WRITE_SIGNED_PERM) ) + { + /* use the rules for the mixed security see section 10.2.3*/ + if (perm & GATT_PERM_WRITE_SIGNED) + { + perm = GATT_PERM_WRITE_ENCRYPTED; + } + else + { + perm = GATT_PERM_WRITE_ENC_MITM; + } + } + + if ((op_code == GATT_SIGN_CMD_WRITE) && !(perm & GATT_WRITE_SIGNED_PERM)) + { + status = GATT_WRITE_NOT_PERMIT; + GATT_TRACE_DEBUG0( "gatts_write_attr_perm_check - sign cmd write not allowed"); + } + if ((op_code == GATT_SIGN_CMD_WRITE) && (sec_flag & GATT_SEC_FLAG_ENCRYPTED)) + { + status = GATT_INVALID_PDU; + GATT_TRACE_ERROR0( "gatts_write_attr_perm_check - Error!! sign cmd write sent on a encypted link"); + } + else if (!(perm & GATT_WRITE_ALLOWED)) + { + status = GATT_WRITE_NOT_PERMIT; + GATT_TRACE_ERROR0( "gatts_write_attr_perm_check - GATT_WRITE_NOT_PERMIT"); + } + else if ((perm & GATT_WRITE_AUTH_REQUIRED ) && !(sec_flag & GATT_SEC_FLAG_LKEY_UNAUTHED)) + { + status = GATT_INSUF_AUTHENTICATION; + GATT_TRACE_ERROR0( "gatts_write_attr_perm_check - GATT_INSUF_AUTHENTICATION"); + } + else if ((perm & GATT_WRITE_MITM_REQUIRED ) && !(sec_flag & GATT_SEC_FLAG_LKEY_AUTHED)) + { + status = GATT_INSUF_AUTHENTICATION; + GATT_TRACE_ERROR0( "gatts_write_attr_perm_check - GATT_INSUF_AUTHENTICATION: MITM required"); + } + else if ((perm & GATT_WRITE_ENCRYPTED_PERM ) && !(sec_flag & GATT_SEC_FLAG_ENCRYPTED)) + { + status = GATT_INSUF_ENCRYPTION; + GATT_TRACE_ERROR0( "gatts_write_attr_perm_check - GATT_INSUF_ENCRYPTION"); + } + else if ((perm & GATT_WRITE_ENCRYPTED_PERM ) && (sec_flag & GATT_SEC_FLAG_ENCRYPTED) && (key_size < min_key_size)) + { + status = GATT_INSUF_KEY_SIZE; + GATT_TRACE_ERROR0( "gatts_write_attr_perm_check - GATT_INSUF_KEY_SIZE"); + } + else /* writable: must be char value declaration or char descritpors */ + { + if(p_attr->uuid_type == GATT_ATTR_UUID_TYPE_16) + { + switch (p_attr->uuid) + { + case GATT_UUID_CHAR_PRESENT_FORMAT:/* should be readable only */ + case GATT_UUID_CHAR_EXT_PROP:/* should be readable only */ + case GATT_UUID_CHAR_AGG_FORMAT: /* should be readable only */ + case GATT_UUID_CHAR_VALID_RANGE: + status = GATT_WRITE_NOT_PERMIT; + break; + + case GATT_UUID_CHAR_CLIENT_CONFIG: + case GATT_UUID_CHAR_SRVR_CONFIG: + max_size = 2; + case GATT_UUID_CHAR_DESCRIPTION: + default: /* any other must be character value declaration */ + status = GATT_SUCCESS; + break; + } + } + else if (p_attr->uuid_type == GATT_ATTR_UUID_TYPE_128) + { + status = GATT_SUCCESS; + } + else + { + status = GATT_INVALID_PDU; + } + + if (p_data == NULL && len > 0) + { + status = GATT_INVALID_PDU; + } + /* these attribute does not allow write blob */ +// btla-specific ++ + else if ( (p_attr->uuid_type == GATT_ATTR_UUID_TYPE_16) && + (p_attr->uuid == GATT_UUID_CHAR_CLIENT_CONFIG || + p_attr->uuid == GATT_UUID_CHAR_SRVR_CONFIG) ) +// btla-specific -- + { + if (op_code == GATT_REQ_PREPARE_WRITE && offset != 0) /* does not allow write blob */ + { + status = GATT_NOT_LONG; + GATT_TRACE_ERROR0( "gatts_write_attr_perm_check - GATT_NOT_LONG"); + } + else if (len != max_size) /* data does not match the required format */ + { + status = GATT_INVALID_PDU; + GATT_TRACE_ERROR0( "gatts_write_attr_perm_check - GATT_INVALID_PDU"); + } + else + { + status = GATT_SUCCESS; + } + } + } + break; + } + else + p_attr = (tGATT_ATTR16 *)p_attr->p_next; + } + } + + return status; +} + +/******************************************************************************* +** +** Function allocate_attr_in_db +** +** Description Allocate a memory space for a new attribute, and link this +** attribute into the database attribute list. +** +** +** Parameter p_db : database pointer. +** service : type of attribute to be added. +** +** Returns pointer to the newly allocated attribute. +** +*******************************************************************************/ +static void *allocate_attr_in_db(tGATT_SVC_DB *p_db, UINT16 uuid16, UINT8 *uuid128, tGATT_PERM perm) +{ + tGATT_ATTR16 *p_attr16 = NULL, *p_last; + tGATT_ATTR128 *p_attr128 = NULL; + UINT16 len = (uuid16 == 0) ? sizeof(tGATT_ATTR128): sizeof(tGATT_ATTR16); + + GATT_TRACE_DEBUG1("allocate attr %d bytes ",len); + + if (uuid16 == GATT_ILLEGAL_UUID && uuid128 == NULL) + { + GATT_TRACE_ERROR0("illegal UUID"); + return NULL; + } + + if (p_db->end_handle <= p_db->next_handle) + { + GATT_TRACE_DEBUG2("handle space full. handle_max = %d next_handle = %d", + p_db->end_handle, p_db->next_handle); + return NULL; + } + + if (p_db->mem_free < len) + { + if (!allocate_svc_db_buf(p_db)) + { + GATT_TRACE_ERROR0("allocate_attr_in_db failed, no resources"); + return NULL; + } + } + + p_attr16 = (tGATT_ATTR16 *) p_db->p_free_mem; + p_attr128 = (tGATT_ATTR128 *) p_db->p_free_mem; + + memset(p_attr16, 0, len); + + if (uuid16 != GATT_ILLEGAL_UUID) + { + p_attr16->uuid_type = GATT_ATTR_UUID_TYPE_16; + p_attr16->uuid = uuid16; + } + else + { + p_attr128->uuid_type = GATT_ATTR_UUID_TYPE_128; + memcpy(p_attr128->uuid, uuid128, LEN_UUID_128); + } + + p_db->p_free_mem += len; + p_db->mem_free -= len; + + p_attr16->handle = p_db->next_handle++; + p_attr16->permission = perm; + p_attr16->p_next = NULL; + + /* link the attribute record into the end of DB */ + if (p_db->p_attr_list == NULL) + p_db->p_attr_list = p_attr16; + else + { + p_last = (tGATT_ATTR16 *)p_db->p_attr_list; + + while (p_last != NULL && p_last->p_next != NULL) + p_last = (tGATT_ATTR16 *)p_last->p_next; + + p_last->p_next = p_attr16; + } + + if (p_attr16->uuid_type == GATT_ATTR_UUID_TYPE_16) + { + GATT_TRACE_DEBUG3("=====> handle = [0x%04x] uuid = [0x%04x] perm=0x%02x ", + p_attr16->handle, p_attr16->uuid, p_attr16->permission); + } + else + { + GATT_TRACE_DEBUG4("=====> handle = [0x%04x] uuid128 = [0x%02x:0x%02x] perm=0x%02x ", + p_attr128->handle, p_attr128->uuid[0],p_attr128->uuid[1], + p_attr128->permission); + } + return(void *)p_attr16; +} + +/******************************************************************************* +** +** Function deallocate_attr_in_db +** +** Description Free an attribute within the database. +** +** Parameter p_db: database pointer. +** p_attr: pointer to the attribute record to be freed. +** +** Returns BOOLEAN: success +** +*******************************************************************************/ +static BOOLEAN deallocate_attr_in_db(tGATT_SVC_DB *p_db, void *p_attr) +{ + tGATT_ATTR16 *p_cur, *p_next; + BOOLEAN found = FALSE; + + if (p_db->p_attr_list == NULL) + return found; + + p_cur = (tGATT_ATTR16 *) p_db->p_attr_list; + p_next = (tGATT_ATTR16 *) p_cur->p_next; + + for (; p_cur != NULL && p_next != NULL; + p_cur = p_next, p_next = (tGATT_ATTR16 *)p_next->p_next) + { + if (p_next == p_attr) + { + p_cur->p_next = p_next->p_next; + found = TRUE; + } + } + if (p_cur == p_attr && p_cur == p_db->p_attr_list) + { + p_db->p_attr_list = p_cur->p_next; + found = TRUE; + } + /* else attr not found */ + if ( found) + p_db->next_handle --; + + return found; +} + +/******************************************************************************* +** +** Function copy_extra_byte_in_db +** +** Description Utility function to allocate extra bytes memory in DB and copy +** the value from a source place. +** +** +** Parameter p_db: database pointer. +** p_dst: destination data pointer. +** p_src: source data pointer. +** len: data length to be copied. +** +** Returns None. +** +*******************************************************************************/ +static BOOLEAN copy_extra_byte_in_db(tGATT_SVC_DB *p_db, void **p_dst, UINT16 len) +{ + UINT8 *p = (UINT8 *)*p_dst; + + if (p_db->mem_free < len) + { + if (!allocate_svc_db_buf(p_db)) + { + GATT_TRACE_ERROR0("copy_extra_byte_in_db failed, no resources"); + return FALSE; + } + } + + p = p_db->p_free_mem; + p_db->p_free_mem += len; + p_db->mem_free -= len; + memset((void *)p, 0, len); + *p_dst = (void *)p; + + return TRUE; +} + +/******************************************************************************* +** +** Function allocate_svc_db_buf +** +** Description Utility function to allocate extra buffer for service database. +** +** Returns TRUE if allocation succeed, otherwise FALSE. +** +*******************************************************************************/ +static BOOLEAN allocate_svc_db_buf(tGATT_SVC_DB *p_db) +{ + BT_HDR *p_buf; + + GATT_TRACE_DEBUG0("allocate_svc_db_buf allocating extra buffer"); + + if ((p_buf = (BT_HDR *)GKI_getpoolbuf(GATT_DB_POOL_ID)) == NULL) + { + GATT_TRACE_ERROR0("allocate_svc_db_buf failed, no resources"); + return FALSE; + } + + memset(p_buf, 0, GKI_get_buf_size(p_buf)); + p_db->p_free_mem = (UINT8 *) p_buf; + p_db->mem_free = GKI_get_buf_size(p_buf); + + GKI_enqueue(&p_db->svc_buffer, p_buf); + + return TRUE; + +} + +/******************************************************************************* +** +** Function gatts_send_app_read_request +** +** Description Send application read request callback +** +** Returns status of operation. +** +*******************************************************************************/ +static tGATT_STATUS gatts_send_app_read_request(tGATT_TCB *p_tcb, UINT8 op_code, + UINT16 handle, UINT16 offset, UINT32 trans_id) +{ + tGATTS_DATA sr_data; + UINT8 i_rcb; + tGATT_SR_REG *p_sreg; + UINT16 conn_id; + + i_rcb = gatt_sr_find_i_rcb_by_handle(handle); + p_sreg = &gatt_cb.sr_reg[i_rcb]; + conn_id = GATT_CREATE_CONN_ID(p_tcb->tcb_idx, p_sreg->gatt_if); + + if (trans_id == 0) + { + trans_id = gatt_sr_enqueue_cmd(p_tcb, op_code, handle); + gatt_sr_update_cback_cnt(p_tcb, p_sreg->gatt_if, TRUE, TRUE); + } + + if (trans_id != 0 ) + { + memset(&sr_data, 0, sizeof(tGATTS_DATA)); + + sr_data.read_req.handle = handle; + sr_data.read_req.is_long = (BOOLEAN)(op_code == GATT_REQ_READ_BLOB); + sr_data.read_req.offset = offset; + + gatt_sr_send_req_callback(conn_id, + trans_id, GATTS_REQ_TYPE_READ, &sr_data); + return(tGATT_STATUS) GATT_PENDING; + } + else + return(tGATT_STATUS) GATT_BUSY; /* max pending command, application error */ + +} + +/******************************************************************************* +** +** Function gatts_db_add_service_declaration +** +** Description Update a service database service declaration record. +** +** Parameter p_db: database pointer. +** service: UUID of the service. +** +** Returns void +** +*******************************************************************************/ +static void gatts_db_add_service_declaration(tGATT_SVC_DB *p_db, tBT_UUID service, BOOLEAN is_pri) +{ + tGATT_ATTR16 *p_attr; + UINT16 service_type = is_pri ? GATT_UUID_PRI_SERVICE: GATT_UUID_SEC_SERVICE; + + GATT_TRACE_DEBUG0( "add_service_declaration"); + + /* add service declration record */ + if ((p_attr = (tGATT_ATTR16 *)(allocate_attr_in_db(p_db, service_type, NULL, GATT_PERM_READ))) != NULL) + { + if (copy_extra_byte_in_db (p_db, (void **)&p_attr->p_value, sizeof(tBT_UUID))) + { + memcpy (&p_attr->p_value->uuid, &service, sizeof(tBT_UUID)); + } + } +} + +#endif /* BLE_INCLUDED */ |