| /****************************************************************************** |
| * |
| * 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 SDP discovery functions |
| * |
| ******************************************************************************/ |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stdio.h> |
| |
| #include "bt_target.h" |
| #include "gki.h" |
| #include "l2cdefs.h" |
| #include "hcidefs.h" |
| #include "hcimsgs.h" |
| #include "sdp_api.h" |
| #include "sdpint.h" |
| #include "btu.h" |
| #include "btm_api.h" |
| |
| |
| #ifndef SDP_DEBUG_RAW |
| #define SDP_DEBUG_RAW FALSE |
| #endif |
| |
| /********************************************************************************/ |
| /* L O C A L F U N C T I O N P R O T O T Y P E S */ |
| /********************************************************************************/ |
| #if SDP_CLIENT_ENABLED == TRUE |
| static void process_service_search_rsp (tCONN_CB *p_ccb, UINT8 *p_reply, UINT16 len); |
| static void process_service_attr_rsp (tCONN_CB *p_ccb, UINT8 *p_reply, UINT16 len); |
| static void process_service_search_attr_rsp (tCONN_CB *p_ccb, UINT8 *p_reply, UINT16 len); |
| static UINT8 *save_attr_seq (tCONN_CB *p_ccb, UINT8 *p, UINT8 *p_msg_end); |
| static tSDP_DISC_REC *add_record (tSDP_DISCOVERY_DB *p_db, BD_ADDR p_bda); |
| static UINT8 *add_attr (UINT8 *p, tSDP_DISCOVERY_DB *p_db, tSDP_DISC_REC *p_rec, |
| UINT16 attr_id, tSDP_DISC_ATTR *p_parent_attr, UINT8 nest_level); |
| |
| /* Safety check in case we go crazy */ |
| #define MAX_NEST_LEVELS 5 |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function sdpu_build_uuid_seq |
| ** |
| ** Description This function builds a UUID sequence from the list of |
| ** passed UUIDs. It is also passed the address of the output |
| ** buffer. |
| ** |
| ** Returns Pointer to next byte in the output buffer. |
| ** |
| *******************************************************************************/ |
| static UINT8 *sdpu_build_uuid_seq (UINT8 *p_out, UINT16 num_uuids, tSDP_UUID *p_uuid_list) |
| { |
| UINT16 xx; |
| UINT8 *p_len; |
| |
| /* First thing is the data element header */ |
| UINT8_TO_BE_STREAM (p_out, (DATA_ELE_SEQ_DESC_TYPE << 3) | SIZE_IN_NEXT_BYTE); |
| |
| /* Remember where the length goes. Leave space for it. */ |
| p_len = p_out; |
| p_out += 1; |
| |
| /* Now, loop through and put in all the UUID(s) */ |
| for (xx = 0; xx < num_uuids; xx++, p_uuid_list++) |
| { |
| if (p_uuid_list->len == 2) |
| { |
| UINT8_TO_BE_STREAM (p_out, (UUID_DESC_TYPE << 3) | SIZE_TWO_BYTES); |
| UINT16_TO_BE_STREAM (p_out, p_uuid_list->uu.uuid16); |
| } |
| else if (p_uuid_list->len == 4) |
| { |
| UINT8_TO_BE_STREAM (p_out, (UUID_DESC_TYPE << 3) | SIZE_FOUR_BYTES); |
| UINT32_TO_BE_STREAM (p_out, p_uuid_list->uu.uuid32); |
| } |
| else |
| { |
| UINT8_TO_BE_STREAM (p_out, (UUID_DESC_TYPE << 3) | SIZE_SIXTEEN_BYTES); |
| ARRAY_TO_BE_STREAM (p_out, p_uuid_list->uu.uuid128, p_uuid_list->len); |
| } |
| } |
| |
| /* Now, put in the length */ |
| xx = (UINT16)(p_out - p_len - 1); |
| UINT8_TO_BE_STREAM (p_len, xx); |
| |
| return (p_out); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function sdp_snd_service_search_req |
| ** |
| ** Description Send a service search request to the SDP server. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| static void sdp_snd_service_search_req(tCONN_CB *p_ccb, UINT8 cont_len, UINT8 * p_cont) |
| { |
| UINT8 *p, *p_start, *p_param_len; |
| BT_HDR *p_cmd; |
| UINT16 param_len; |
| |
| /* Get a buffer to send the packet to L2CAP */ |
| if ((p_cmd = (BT_HDR *) GKI_getpoolbuf (SDP_POOL_ID)) == NULL) |
| { |
| sdp_disconnect (p_ccb, SDP_NO_RESOURCES); |
| return; |
| } |
| |
| p_cmd->offset = L2CAP_MIN_OFFSET; |
| p = p_start = (UINT8 *)(p_cmd + 1) + L2CAP_MIN_OFFSET; |
| |
| /* Build a service search request packet */ |
| UINT8_TO_BE_STREAM (p, SDP_PDU_SERVICE_SEARCH_REQ); |
| UINT16_TO_BE_STREAM (p, p_ccb->transaction_id); |
| p_ccb->transaction_id++; |
| |
| /* Skip the length, we need to add it at the end */ |
| p_param_len = p; |
| p += 2; |
| |
| /* Build the UID sequence. */ |
| #if (defined(SDP_BROWSE_PLUS) && SDP_BROWSE_PLUS == TRUE) |
| p = sdpu_build_uuid_seq (p, 1, &p_ccb->p_db->uuid_filters[p_ccb->cur_uuid_idx]); |
| #else |
| p = sdpu_build_uuid_seq (p, p_ccb->p_db->num_uuid_filters, p_ccb->p_db->uuid_filters); |
| #endif |
| |
| /* Set max service record count */ |
| UINT16_TO_BE_STREAM (p, sdp_cb.max_recs_per_search); |
| |
| /* Set continuation state */ |
| UINT8_TO_BE_STREAM (p, cont_len); |
| |
| /* if this is not the first request */ |
| if(cont_len && p_cont) |
| { |
| memcpy(p, p_cont, cont_len); |
| p += cont_len; |
| } |
| |
| /* Go back and put the parameter length into the buffer */ |
| param_len = (UINT16)(p - p_param_len - 2); |
| UINT16_TO_BE_STREAM (p_param_len, param_len); |
| |
| p_ccb->disc_state = SDP_DISC_WAIT_HANDLES; |
| |
| /* Set the length of the SDP data in the buffer */ |
| p_cmd->len = (UINT16)(p - p_start); |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING2("sdp_snd_service_search_req cont_len :%d disc_state:%d",cont_len, p_ccb->disc_state); |
| #endif |
| |
| |
| L2CA_DataWrite (p_ccb->connection_id, p_cmd); |
| |
| /* Start inactivity timer */ |
| btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_SDP, SDP_INACT_TIMEOUT); |
| |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function sdp_disc_connected |
| ** |
| ** Description This function is called when an SDP discovery attempt is |
| ** connected. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| void sdp_disc_connected (tCONN_CB *p_ccb) |
| { |
| |
| #if SDP_FOR_JV_INCLUDED == TRUE |
| if (SDP_IS_PASS_THRU == p_ccb->is_attr_search) |
| { |
| tSDP_DISC_RES_CB *p_rcb = (tSDP_DISC_RES_CB *) p_ccb->p_db; |
| tSDP_DR_OPEN evt_data; |
| /* report connected */ |
| p_ccb->disc_state = SDP_DISC_WAIT_PASS_THRU; |
| if (p_rcb) |
| { |
| memcpy(evt_data.peer_addr, p_ccb->device_address, BD_ADDR_LEN); |
| evt_data.peer_mtu = p_ccb->rem_mtu_size; |
| (*p_rcb)(SDP_EVT_OPEN, (void *)&evt_data); |
| } |
| } |
| else |
| #endif |
| if (p_ccb->is_attr_search) |
| { |
| p_ccb->disc_state = SDP_DISC_WAIT_SEARCH_ATTR; |
| |
| process_service_search_attr_rsp (p_ccb, NULL, 0); |
| } |
| else |
| { |
| /* First step is to get a list of the handles from the server. */ |
| /* We are not searching for a specific attribute, so we will */ |
| /* first search for the service, then get all attributes of it */ |
| |
| p_ccb->num_handles = 0; |
| sdp_snd_service_search_req(p_ccb, 0, NULL); |
| } |
| |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function sdp_disc_server_rsp |
| ** |
| ** Description This function is called when there is a response from |
| ** the server. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| void sdp_disc_server_rsp (tCONN_CB *p_ccb, BT_HDR *p_msg) |
| { |
| UINT8 *p, rsp_pdu; |
| BOOLEAN invalid_pdu = TRUE; |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING1("sdp_disc_server_rsp disc_state:%d", p_ccb->disc_state); |
| #endif |
| |
| /* stop inactivity timer when we receive a response */ |
| btu_stop_timer (&p_ccb->timer_entry); |
| |
| #if SDP_FOR_JV_INCLUDED == TRUE |
| if(SDP_IS_PASS_THRU == p_ccb->is_attr_search) |
| { |
| tSDP_DISC_RES_CB *p_rcb = (tSDP_DISC_RES_CB *) p_ccb->p_db; |
| tSDP_DR_DATA data; |
| if (p_rcb) |
| { |
| data.p_data = (UINT8 *)(p_msg + 1) + p_msg->offset; |
| data.data_len = p_msg->len; |
| (*p_rcb)(SDP_EVT_DATA_IND, (void *)&data); |
| } |
| return; |
| } |
| #endif |
| |
| /* Got a reply!! Check what we got back */ |
| p = (UINT8 *)(p_msg + 1) + p_msg->offset; |
| |
| BE_STREAM_TO_UINT8 (rsp_pdu, p); |
| |
| p_msg->len--; |
| |
| switch (rsp_pdu) |
| { |
| case SDP_PDU_SERVICE_SEARCH_RSP: |
| if (p_ccb->disc_state == SDP_DISC_WAIT_HANDLES) |
| { |
| process_service_search_rsp (p_ccb, p, p_msg->len); |
| invalid_pdu = FALSE; |
| } |
| break; |
| |
| case SDP_PDU_SERVICE_ATTR_RSP: |
| if (p_ccb->disc_state == SDP_DISC_WAIT_ATTR) |
| { |
| process_service_attr_rsp (p_ccb, p, p_msg->len); |
| invalid_pdu = FALSE; |
| } |
| break; |
| |
| case SDP_PDU_SERVICE_SEARCH_ATTR_RSP: |
| if (p_ccb->disc_state == SDP_DISC_WAIT_SEARCH_ATTR) |
| { |
| process_service_search_attr_rsp (p_ccb, p, p_msg->len); |
| invalid_pdu = FALSE; |
| } |
| break; |
| } |
| |
| if (invalid_pdu) |
| { |
| SDP_TRACE_WARNING2 ("SDP - Unexp. PDU: %d in state: %d", rsp_pdu, p_ccb->disc_state); |
| sdp_disconnect (p_ccb, SDP_GENERIC_ERROR); |
| } |
| } |
| |
| /****************************************************************************** |
| ** |
| ** Function process_service_search_rsp |
| ** |
| ** Description This function is called when there is a search response from |
| ** the server. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| static void process_service_search_rsp (tCONN_CB *p_ccb, UINT8 *p_reply, UINT16 len) |
| { |
| UINT16 xx; |
| UINT16 total, cur_handles, orig; |
| UINT8 cont_len; |
| |
| /* Skip transaction, and param len */ |
| p_reply += 4; |
| BE_STREAM_TO_UINT16 (total, p_reply); |
| BE_STREAM_TO_UINT16 (cur_handles, p_reply); |
| |
| orig = p_ccb->num_handles; |
| p_ccb->num_handles += cur_handles; |
| if (p_ccb->num_handles == 0) |
| { |
| SDP_TRACE_WARNING0 ("SDP - Rcvd ServiceSearchRsp, no matches"); |
| sdp_disconnect (p_ccb, SDP_NO_RECS_MATCH); |
| return; |
| } |
| |
| /* Save the handles that match. We will can only process a certain number. */ |
| if (total > sdp_cb.max_recs_per_search) |
| total = sdp_cb.max_recs_per_search; |
| if (p_ccb->num_handles > sdp_cb.max_recs_per_search) |
| p_ccb->num_handles = sdp_cb.max_recs_per_search; |
| |
| for (xx = orig; xx < p_ccb->num_handles; xx++) |
| BE_STREAM_TO_UINT32 (p_ccb->handles[xx], p_reply); |
| |
| BE_STREAM_TO_UINT8 (cont_len, p_reply); |
| if(cont_len != 0) |
| { |
| if(cont_len > SDP_MAX_CONTINUATION_LEN) |
| { |
| sdp_disconnect (p_ccb, SDP_INVALID_CONT_STATE); |
| return; |
| } |
| /* stay in the same state */ |
| sdp_snd_service_search_req(p_ccb, cont_len, p_reply); |
| } |
| else |
| { |
| /* change state */ |
| p_ccb->disc_state = SDP_DISC_WAIT_ATTR; |
| |
| /* Kick off the first attribute request */ |
| process_service_attr_rsp (p_ccb, NULL, 0); |
| } |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function sdp_copy_raw_data |
| ** |
| ** Description copy the raw data |
| ** |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| #if (SDP_RAW_DATA_INCLUDED == TRUE) |
| static void sdp_copy_raw_data (tCONN_CB *p_ccb, UINT16 len, BOOLEAN offset) |
| { |
| unsigned int cpy_len; |
| UINT32 list_len; |
| UINT8 *p; |
| UINT8 * p_temp; |
| UINT8 type; |
| UINT32 delta_len = 0; |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| UINT8 num_array[SDP_MAX_LIST_BYTE_COUNT]; |
| UINT32 i; |
| |
| for (i = 0; i < p_ccb->list_len; i++) |
| { |
| sprintf((char *)&num_array[i*2],"%02X",(UINT8)(p_ccb->rsp_list[i])); |
| } |
| SDP_TRACE_WARNING1("result :%s",num_array); |
| #endif |
| |
| if(p_ccb->p_db->raw_data) |
| { |
| cpy_len = p_ccb->p_db->raw_size - p_ccb->p_db->raw_used; |
| list_len = p_ccb->list_len; |
| p_temp = p = &p_ccb->rsp_list[0]; |
| |
| if(offset) |
| { |
| type = *p++; |
| p = sdpu_get_len_from_type (p, type, &list_len); |
| } |
| if(list_len && list_len < cpy_len ) |
| { |
| cpy_len = list_len; |
| } |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING4("list_len :%d cpy_len:%d raw_size:%d raw_used:%d", |
| list_len, cpy_len, p_ccb->p_db->raw_size, p_ccb->p_db->raw_used); |
| #endif |
| memcpy (&p_ccb->p_db->raw_data[p_ccb->p_db->raw_used], p, cpy_len); |
| p_ccb->p_db->raw_used += cpy_len; |
| } |
| } |
| #endif |
| |
| /******************************************************************************* |
| ** |
| ** Function process_service_attr_rsp |
| ** |
| ** Description This function is called when there is a attribute response from |
| ** the server. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| static void process_service_attr_rsp (tCONN_CB *p_ccb, UINT8 *p_reply, UINT16 len) |
| { |
| UINT8 *p_start, *p_param_len; |
| UINT16 param_len, list_byte_count; |
| BOOLEAN cont_request_needed = FALSE; |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING2("process_service_attr_rsp len:%d raw inc:%d", |
| len, SDP_RAW_DATA_INCLUDED); |
| #endif |
| /* If p_reply is NULL, we were called after the records handles were read */ |
| if (p_reply) |
| { |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING4("ID & len: 0x%02x-%02x-%02x-%02x", |
| p_reply[0], p_reply[1], p_reply[2], p_reply[3]); |
| #endif |
| /* Skip transaction ID and length */ |
| p_reply += 4; |
| |
| BE_STREAM_TO_UINT16 (list_byte_count, p_reply); |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING1("list_byte_count:%d", list_byte_count); |
| #endif |
| |
| /* Copy the response to the scratchpad. First, a safety check on the length */ |
| if ((p_ccb->list_len + list_byte_count) > SDP_MAX_LIST_BYTE_COUNT) |
| { |
| sdp_disconnect (p_ccb, SDP_INVALID_PDU_SIZE); |
| return; |
| } |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING2("list_len: %d, list_byte_count: %d", |
| p_ccb->list_len, list_byte_count); |
| #endif |
| if (p_ccb->rsp_list == NULL) |
| { |
| p_ccb->rsp_list = (UINT8 *)GKI_getbuf (SDP_MAX_LIST_BYTE_COUNT); |
| if (p_ccb->rsp_list == NULL) |
| { |
| SDP_TRACE_ERROR0 ("SDP - no gki buf to save rsp"); |
| sdp_disconnect (p_ccb, SDP_NO_RESOURCES); |
| return; |
| } |
| } |
| memcpy (&p_ccb->rsp_list[p_ccb->list_len], p_reply, list_byte_count); |
| p_ccb->list_len += list_byte_count; |
| p_reply += list_byte_count; |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING1("list_len: %d(attr_rsp)", p_ccb->list_len); |
| |
| /* Check if we need to request a continuation */ |
| SDP_TRACE_WARNING2("*p_reply:%d(%d)", *p_reply, SDP_MAX_CONTINUATION_LEN); |
| #endif |
| if (*p_reply) |
| { |
| if (*p_reply > SDP_MAX_CONTINUATION_LEN) |
| { |
| sdp_disconnect (p_ccb, SDP_INVALID_CONT_STATE); |
| return; |
| } |
| cont_request_needed = TRUE; |
| } |
| else |
| { |
| |
| #if (SDP_RAW_DATA_INCLUDED == TRUE) |
| SDP_TRACE_WARNING0("process_service_attr_rsp"); |
| sdp_copy_raw_data (p_ccb, len, FALSE); |
| #endif |
| |
| /* Save the response in the database. Stop on any error */ |
| if (!save_attr_seq (p_ccb, &p_ccb->rsp_list[0], &p_ccb->rsp_list[p_ccb->list_len])) |
| { |
| sdp_disconnect (p_ccb, SDP_DB_FULL); |
| return; |
| } |
| p_ccb->list_len = 0; |
| p_ccb->cur_handle++; |
| } |
| } |
| |
| /* Now, ask for the next handle. Re-use the buffer we just got. */ |
| if (p_ccb->cur_handle < p_ccb->num_handles) |
| { |
| BT_HDR *p_msg = (BT_HDR *) GKI_getpoolbuf (SDP_POOL_ID); |
| UINT8 *p; |
| |
| if (!p_msg) |
| { |
| sdp_disconnect (p_ccb, SDP_NO_RESOURCES); |
| return; |
| } |
| |
| p_msg->offset = L2CAP_MIN_OFFSET; |
| p = p_start = (UINT8 *)(p_msg + 1) + L2CAP_MIN_OFFSET; |
| |
| /* Get all the attributes from the server */ |
| UINT8_TO_BE_STREAM (p, SDP_PDU_SERVICE_ATTR_REQ); |
| UINT16_TO_BE_STREAM (p, p_ccb->transaction_id); |
| p_ccb->transaction_id++; |
| |
| /* Skip the length, we need to add it at the end */ |
| p_param_len = p; |
| p += 2; |
| |
| UINT32_TO_BE_STREAM (p, p_ccb->handles[p_ccb->cur_handle]); |
| |
| /* Max attribute byte count */ |
| UINT16_TO_BE_STREAM (p, sdp_cb.max_attr_list_size); |
| |
| /* If no attribute filters, build a wildcard attribute sequence */ |
| if (p_ccb->p_db->num_attr_filters) |
| p = sdpu_build_attrib_seq (p, p_ccb->p_db->attr_filters, p_ccb->p_db->num_attr_filters); |
| else |
| p = sdpu_build_attrib_seq (p, NULL, 0); |
| |
| /* Was this a continuation request ? */ |
| if (cont_request_needed) |
| { |
| memcpy (p, p_reply, *p_reply + 1); |
| p += *p_reply + 1; |
| } |
| else |
| UINT8_TO_BE_STREAM (p, 0); |
| |
| /* Go back and put the parameter length into the buffer */ |
| param_len = (UINT16)(p - p_param_len - 2); |
| UINT16_TO_BE_STREAM (p_param_len, param_len); |
| |
| /* Set the length of the SDP data in the buffer */ |
| p_msg->len = (UINT16)(p - p_start); |
| |
| |
| L2CA_DataWrite (p_ccb->connection_id, p_msg); |
| |
| /* Start inactivity timer */ |
| btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_SDP, SDP_INACT_TIMEOUT); |
| } |
| else |
| { |
| sdp_disconnect (p_ccb, SDP_SUCCESS); |
| return; |
| } |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function process_service_search_attr_rsp |
| ** |
| ** Description This function is called when there is a search attribute |
| ** response from the server. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| static void process_service_search_attr_rsp (tCONN_CB *p_ccb, UINT8 *p_reply, UINT16 len) |
| { |
| UINT8 *p, *p_start, *p_end, *p_param_len; |
| UINT8 type; |
| UINT32 seq_len; |
| UINT16 param_len, lists_byte_count = 0; |
| BOOLEAN cont_request_needed = FALSE; |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING1("process_service_search_attr_rsp len:%d", len); |
| #endif |
| /* If p_reply is NULL, we were called for the initial read */ |
| if (p_reply) |
| { |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING4("ID & len: 0x%02x-%02x-%02x-%02x", |
| p_reply[0], p_reply[1], p_reply[2], p_reply[3]); |
| #endif |
| /* Skip transaction ID and length */ |
| p_reply += 4; |
| |
| BE_STREAM_TO_UINT16 (lists_byte_count, p_reply); |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING1("lists_byte_count:%d", lists_byte_count); |
| #endif |
| |
| /* Copy the response to the scratchpad. First, a safety check on the length */ |
| if ((p_ccb->list_len + lists_byte_count) > SDP_MAX_LIST_BYTE_COUNT) |
| { |
| sdp_disconnect (p_ccb, SDP_INVALID_PDU_SIZE); |
| return; |
| } |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING2("list_len: %d, list_byte_count: %d", |
| p_ccb->list_len, lists_byte_count); |
| #endif |
| if (p_ccb->rsp_list == NULL) |
| { |
| p_ccb->rsp_list = (UINT8 *)GKI_getbuf (SDP_MAX_LIST_BYTE_COUNT); |
| if (p_ccb->rsp_list == NULL) |
| { |
| SDP_TRACE_ERROR0 ("SDP - no gki buf to save rsp"); |
| sdp_disconnect (p_ccb, SDP_NO_RESOURCES); |
| return; |
| } |
| } |
| memcpy (&p_ccb->rsp_list[p_ccb->list_len], p_reply, lists_byte_count); |
| p_ccb->list_len += lists_byte_count; |
| p_reply += lists_byte_count; |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING1("list_len: %d(search_attr_rsp)", p_ccb->list_len); |
| |
| /* Check if we need to request a continuation */ |
| SDP_TRACE_WARNING2("*p_reply:%d(%d)", *p_reply, SDP_MAX_CONTINUATION_LEN); |
| #endif |
| if (*p_reply) |
| { |
| if (*p_reply > SDP_MAX_CONTINUATION_LEN) |
| { |
| sdp_disconnect (p_ccb, SDP_INVALID_CONT_STATE); |
| return; |
| } |
| |
| cont_request_needed = TRUE; |
| } |
| } |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING1("cont_request_needed:%d", cont_request_needed); |
| #endif |
| /* If continuation request (or first time request) */ |
| if ((cont_request_needed) || (!p_reply)) |
| { |
| BT_HDR *p_msg = (BT_HDR *) GKI_getpoolbuf (SDP_POOL_ID); |
| UINT8 *p; |
| |
| if (!p_msg) |
| { |
| sdp_disconnect (p_ccb, SDP_NO_RESOURCES); |
| return; |
| } |
| |
| p_msg->offset = L2CAP_MIN_OFFSET; |
| p = p_start = (UINT8 *)(p_msg + 1) + L2CAP_MIN_OFFSET; |
| |
| /* Build a service search request packet */ |
| UINT8_TO_BE_STREAM (p, SDP_PDU_SERVICE_SEARCH_ATTR_REQ); |
| UINT16_TO_BE_STREAM (p, p_ccb->transaction_id); |
| p_ccb->transaction_id++; |
| |
| /* Skip the length, we need to add it at the end */ |
| p_param_len = p; |
| p += 2; |
| |
| /* Build the UID sequence. */ |
| #if (defined(SDP_BROWSE_PLUS) && SDP_BROWSE_PLUS == TRUE) |
| p = sdpu_build_uuid_seq (p, 1, &p_ccb->p_db->uuid_filters[p_ccb->cur_uuid_idx]); |
| #else |
| p = sdpu_build_uuid_seq (p, p_ccb->p_db->num_uuid_filters, p_ccb->p_db->uuid_filters); |
| #endif |
| |
| /* Max attribute byte count */ |
| UINT16_TO_BE_STREAM (p, sdp_cb.max_attr_list_size); |
| |
| /* If no attribute filters, build a wildcard attribute sequence */ |
| if (p_ccb->p_db->num_attr_filters) |
| p = sdpu_build_attrib_seq (p, p_ccb->p_db->attr_filters, p_ccb->p_db->num_attr_filters); |
| else |
| p = sdpu_build_attrib_seq (p, NULL, 0); |
| |
| /* No continuation for first request */ |
| if (p_reply) |
| { |
| memcpy (p, p_reply, *p_reply + 1); |
| p += *p_reply + 1; |
| } |
| else |
| UINT8_TO_BE_STREAM (p, 0); |
| |
| /* Go back and put the parameter length into the buffer */ |
| param_len = p - p_param_len - 2; |
| UINT16_TO_BE_STREAM (p_param_len, param_len); |
| |
| /* Set the length of the SDP data in the buffer */ |
| p_msg->len = p - p_start; |
| |
| |
| L2CA_DataWrite (p_ccb->connection_id, p_msg); |
| |
| /* Start inactivity timer */ |
| btu_start_timer (&p_ccb->timer_entry, BTU_TTYPE_SDP, SDP_INACT_TIMEOUT); |
| |
| return; |
| } |
| |
| |
| /*******************************************************************/ |
| /* We now have the full response, which is a sequence of sequences */ |
| /*******************************************************************/ |
| |
| #if (SDP_RAW_DATA_INCLUDED == TRUE) |
| SDP_TRACE_WARNING0("process_service_search_attr_rsp"); |
| sdp_copy_raw_data (p_ccb, len, TRUE); |
| #endif |
| |
| p = &p_ccb->rsp_list[0]; |
| |
| /* The contents is a sequence of attribute sequences */ |
| type = *p++; |
| |
| if ((type >> 3) != DATA_ELE_SEQ_DESC_TYPE) |
| { |
| SDP_TRACE_WARNING1 ("SDP - Wrong type: 0x%02x in attr_rsp", type); |
| return; |
| } |
| p = sdpu_get_len_from_type (p, type, &seq_len); |
| |
| p_end = &p_ccb->rsp_list[p_ccb->list_len]; |
| |
| if ((p + seq_len) != p_end) |
| { |
| sdp_disconnect (p_ccb, SDP_INVALID_CONT_STATE); |
| return; |
| } |
| |
| while (p < p_end) |
| { |
| p = save_attr_seq (p_ccb, p, &p_ccb->rsp_list[p_ccb->list_len]); |
| if (!p) |
| { |
| sdp_disconnect (p_ccb, SDP_DB_FULL); |
| return; |
| } |
| } |
| |
| /* Since we got everything we need, disconnect the call */ |
| sdp_disconnect (p_ccb, SDP_SUCCESS); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function save_attr_seq |
| ** |
| ** Description This function is called when there is a response from |
| ** the server. |
| ** |
| ** Returns pointer to next byte or NULL if error |
| ** |
| *******************************************************************************/ |
| static UINT8 *save_attr_seq (tCONN_CB *p_ccb, UINT8 *p, UINT8 *p_msg_end) |
| { |
| UINT32 seq_len, attr_len; |
| UINT16 attr_id; |
| UINT8 type, *p_seq_end; |
| tSDP_DISC_REC *p_rec; |
| |
| type = *p++; |
| |
| if ((type >> 3) != DATA_ELE_SEQ_DESC_TYPE) |
| { |
| SDP_TRACE_WARNING1 ("SDP - Wrong type: 0x%02x in attr_rsp", type); |
| return (NULL); |
| } |
| |
| p = sdpu_get_len_from_type (p, type, &seq_len); |
| if ((p + seq_len) > p_msg_end) |
| { |
| SDP_TRACE_WARNING1 ("SDP - Bad len in attr_rsp %d", seq_len); |
| return (NULL); |
| } |
| |
| /* Create a record */ |
| p_rec = add_record (p_ccb->p_db, p_ccb->device_address); |
| if (!p_rec) |
| { |
| SDP_TRACE_WARNING0 ("SDP - DB full add_record"); |
| return (NULL); |
| } |
| |
| p_seq_end = p + seq_len; |
| |
| while (p < p_seq_end) |
| { |
| /* First get the attribute ID */ |
| type = *p++; |
| p = sdpu_get_len_from_type (p, type, &attr_len); |
| if (((type >> 3) != UINT_DESC_TYPE) || (attr_len != 2)) |
| { |
| SDP_TRACE_WARNING2 ("SDP - Bad type: 0x%02x or len: %d in attr_rsp", type, attr_len); |
| return (NULL); |
| } |
| BE_STREAM_TO_UINT16 (attr_id, p); |
| |
| /* Now, add the attribute value */ |
| p = add_attr (p, p_ccb->p_db, p_rec, attr_id, NULL, 0); |
| |
| if (!p) |
| { |
| SDP_TRACE_WARNING0 ("SDP - DB full add_attr"); |
| return (NULL); |
| } |
| } |
| |
| return (p); |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function add_record |
| ** |
| ** Description This function allocates space for a record from the DB. |
| ** |
| ** Returns pointer to next byte in data stream |
| ** |
| *******************************************************************************/ |
| tSDP_DISC_REC *add_record (tSDP_DISCOVERY_DB *p_db, BD_ADDR p_bda) |
| { |
| tSDP_DISC_REC *p_rec; |
| |
| /* See if there is enough space in the database */ |
| if (p_db->mem_free < sizeof (tSDP_DISC_REC)) |
| return (NULL); |
| |
| p_rec = (tSDP_DISC_REC *) p_db->p_free_mem; |
| p_db->p_free_mem += sizeof (tSDP_DISC_REC); |
| p_db->mem_free -= sizeof (tSDP_DISC_REC); |
| |
| p_rec->p_first_attr = NULL; |
| p_rec->p_next_rec = NULL; |
| |
| memcpy (p_rec->remote_bd_addr, p_bda, BD_ADDR_LEN); |
| |
| /* Add the record to the end of chain */ |
| if (!p_db->p_first_rec) |
| p_db->p_first_rec = p_rec; |
| else |
| { |
| tSDP_DISC_REC *p_rec1 = p_db->p_first_rec; |
| |
| while (p_rec1->p_next_rec) |
| p_rec1 = p_rec1->p_next_rec; |
| |
| p_rec1->p_next_rec = p_rec; |
| } |
| |
| return (p_rec); |
| } |
| |
| #define SDP_ADDITIONAL_LIST_MASK 0x80 |
| /******************************************************************************* |
| ** |
| ** Function add_attr |
| ** |
| ** Description This function allocates space for an attribute from the DB |
| ** and copies the data into it. |
| ** |
| ** Returns pointer to next byte in data stream |
| ** |
| *******************************************************************************/ |
| static UINT8 *add_attr (UINT8 *p, tSDP_DISCOVERY_DB *p_db, tSDP_DISC_REC *p_rec, |
| UINT16 attr_id, tSDP_DISC_ATTR *p_parent_attr, UINT8 nest_level) |
| { |
| tSDP_DISC_ATTR *p_attr; |
| UINT32 attr_len; |
| UINT32 total_len; |
| UINT16 attr_type; |
| UINT16 id; |
| UINT8 type; |
| UINT8 *p_end; |
| UINT8 is_additional_list = nest_level & SDP_ADDITIONAL_LIST_MASK; |
| |
| nest_level &= ~(SDP_ADDITIONAL_LIST_MASK); |
| |
| type = *p++; |
| p = sdpu_get_len_from_type (p, type, &attr_len); |
| |
| attr_len &= SDP_DISC_ATTR_LEN_MASK; |
| attr_type = (type >> 3) & 0x0f; |
| |
| /* See if there is enough space in the database */ |
| if (attr_len > 4) |
| total_len = attr_len - 4 + (UINT16)sizeof (tSDP_DISC_ATTR); |
| else |
| total_len = sizeof (tSDP_DISC_ATTR); |
| |
| /* Ensure it is a multiple of 4 */ |
| total_len = (total_len + 3) & ~3; |
| |
| /* See if there is enough space in the database */ |
| if (p_db->mem_free < total_len) |
| return (NULL); |
| |
| p_attr = (tSDP_DISC_ATTR *) p_db->p_free_mem; |
| p_attr->attr_id = attr_id; |
| p_attr->attr_len_type = (UINT16)attr_len | (attr_type << 12); |
| p_attr->p_next_attr = NULL; |
| |
| /* Store the attribute value */ |
| switch (attr_type) |
| { |
| case UINT_DESC_TYPE: |
| if( (is_additional_list != 0) && (attr_len == 2) ) |
| { |
| BE_STREAM_TO_UINT16 (id, p); |
| if(id != ATTR_ID_PROTOCOL_DESC_LIST) |
| p -= 2; |
| else |
| { |
| /* Reserve the memory for the attribute now, as we need to add sub-attributes */ |
| p_db->p_free_mem += sizeof (tSDP_DISC_ATTR); |
| p_db->mem_free -= sizeof (tSDP_DISC_ATTR); |
| p_end = p + attr_len; |
| total_len = 0; |
| |
| /* SDP_TRACE_DEBUG1 ("SDP - attr nest level:%d(list)", nest_level); */ |
| if (nest_level >= MAX_NEST_LEVELS) |
| { |
| SDP_TRACE_ERROR0 ("SDP - attr nesting too deep"); |
| return (p_end); |
| } |
| |
| /* Now, add the list entry */ |
| p = add_attr (p, p_db, p_rec, ATTR_ID_PROTOCOL_DESC_LIST, p_attr, (UINT8)(nest_level + 1)); |
| |
| break; |
| } |
| } |
| /* Case falls through */ |
| |
| case TWO_COMP_INT_DESC_TYPE: |
| switch (attr_len) |
| { |
| case 1: |
| p_attr->attr_value.v.u8 = *p++; |
| break; |
| case 2: |
| BE_STREAM_TO_UINT16 (p_attr->attr_value.v.u16, p); |
| break; |
| case 4: |
| BE_STREAM_TO_UINT32 (p_attr->attr_value.v.u32, p); |
| break; |
| default: |
| BE_STREAM_TO_ARRAY (p, p_attr->attr_value.v.array, (INT32)attr_len); |
| break; |
| } |
| break; |
| |
| case UUID_DESC_TYPE: |
| switch (attr_len) |
| { |
| case 2: |
| BE_STREAM_TO_UINT16 (p_attr->attr_value.v.u16, p); |
| break; |
| case 4: |
| BE_STREAM_TO_UINT32 (p_attr->attr_value.v.u32, p); |
| if (p_attr->attr_value.v.u32 < 0x10000) |
| { |
| attr_len = 2; |
| p_attr->attr_len_type = (UINT16)attr_len | (attr_type << 12); |
| p_attr->attr_value.v.u16 = (UINT16) p_attr->attr_value.v.u32; |
| |
| } |
| break; |
| case 16: |
| /* See if we can compress his UUID down to 16 or 32bit UUIDs */ |
| if (sdpu_is_base_uuid (p)) |
| { |
| if ((p[0] == 0) && (p[1] == 0)) |
| { |
| p_attr->attr_len_type = (p_attr->attr_len_type & ~SDP_DISC_ATTR_LEN_MASK) | 2; |
| p += 2; |
| BE_STREAM_TO_UINT16 (p_attr->attr_value.v.u16, p); |
| p += MAX_UUID_SIZE - 4; |
| } |
| else |
| { |
| p_attr->attr_len_type = (p_attr->attr_len_type & ~SDP_DISC_ATTR_LEN_MASK) | 4; |
| BE_STREAM_TO_UINT32 (p_attr->attr_value.v.u32, p); |
| p += MAX_UUID_SIZE - 4; |
| } |
| } |
| else |
| { |
| /* coverity[overrun-local] */ |
| /* |
| Event overrun-local: Overrun of static array "p_attr->attr_value.v.array" of size 4 at position 15 with index variable "ijk" |
| False-positive: SDP uses scratch buffer to hold the attribute value. |
| The actual size of tSDP_DISC_ATVAL does not matter. |
| If the array size in tSDP_DISC_ATVAL is increase, we would increase the system RAM usage unnecessarily |
| */ |
| BE_STREAM_TO_ARRAY (p, p_attr->attr_value.v.array, (INT32)attr_len); |
| } |
| break; |
| default: |
| SDP_TRACE_WARNING1 ("SDP - bad len in UUID attr: %d", attr_len); |
| return (p + attr_len); |
| } |
| break; |
| |
| case DATA_ELE_SEQ_DESC_TYPE: |
| case DATA_ELE_ALT_DESC_TYPE: |
| /* Reserve the memory for the attribute now, as we need to add sub-attributes */ |
| p_db->p_free_mem += sizeof (tSDP_DISC_ATTR); |
| p_db->mem_free -= sizeof (tSDP_DISC_ATTR); |
| p_end = p + attr_len; |
| total_len = 0; |
| |
| /* SDP_TRACE_DEBUG1 ("SDP - attr nest level:%d", nest_level); */ |
| if (nest_level >= MAX_NEST_LEVELS) |
| { |
| SDP_TRACE_ERROR0 ("SDP - attr nesting too deep"); |
| return (p_end); |
| } |
| if(is_additional_list != 0 || attr_id == ATTR_ID_ADDITION_PROTO_DESC_LISTS) |
| nest_level |= SDP_ADDITIONAL_LIST_MASK; |
| /* SDP_TRACE_DEBUG1 ("SDP - attr nest level:0x%x(finish)", nest_level); */ |
| |
| while (p < p_end) |
| { |
| /* Now, add the list entry */ |
| p = add_attr (p, p_db, p_rec, 0, p_attr, (UINT8)(nest_level + 1)); |
| |
| if (!p) |
| return (NULL); |
| } |
| break; |
| |
| case TEXT_STR_DESC_TYPE: |
| case URL_DESC_TYPE: |
| BE_STREAM_TO_ARRAY (p, p_attr->attr_value.v.array, (INT32)attr_len); |
| break; |
| |
| case BOOLEAN_DESC_TYPE: |
| switch (attr_len) |
| { |
| case 1: |
| p_attr->attr_value.v.u8 = *p++; |
| break; |
| default: |
| SDP_TRACE_WARNING1 ("SDP - bad len in boolean attr: %d", attr_len); |
| return (p + attr_len); |
| } |
| break; |
| |
| default: /* switch (attr_type) */ |
| break; |
| } |
| |
| p_db->p_free_mem += total_len; |
| p_db->mem_free -= total_len; |
| |
| /* Add the attribute to the end of the chain */ |
| if (!p_parent_attr) |
| { |
| if (!p_rec->p_first_attr) |
| p_rec->p_first_attr = p_attr; |
| else |
| { |
| tSDP_DISC_ATTR *p_attr1 = p_rec->p_first_attr; |
| |
| while (p_attr1->p_next_attr) |
| p_attr1 = p_attr1->p_next_attr; |
| |
| p_attr1->p_next_attr = p_attr; |
| } |
| } |
| else |
| { |
| if (!p_parent_attr->attr_value.v.p_sub_attr) |
| { |
| p_parent_attr->attr_value.v.p_sub_attr = p_attr; |
| /* SDP_TRACE_DEBUG4 ("parent:0x%x(id:%d), ch:0x%x(id:%d)", |
| p_parent_attr, p_parent_attr->attr_id, p_attr, p_attr->attr_id); */ |
| } |
| else |
| { |
| tSDP_DISC_ATTR *p_attr1 = p_parent_attr->attr_value.v.p_sub_attr; |
| /* SDP_TRACE_DEBUG4 ("parent:0x%x(id:%d), ch1:0x%x(id:%d)", |
| p_parent_attr, p_parent_attr->attr_id, p_attr1, p_attr1->attr_id); */ |
| |
| while (p_attr1->p_next_attr) |
| p_attr1 = p_attr1->p_next_attr; |
| |
| p_attr1->p_next_attr = p_attr; |
| /* SDP_TRACE_DEBUG2 ("new ch:0x%x(id:%d)", p_attr, p_attr->attr_id); */ |
| } |
| } |
| |
| return (p); |
| } |
| |
| #endif /* CLIENT_ENABLED == TRUE */ |
