| /****************************************************************************** |
| * |
| * 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 <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "bt_common.h" |
| #include "bt_target.h" |
| #include "btm_api.h" |
| #include "btu.h" |
| #include "hcidefs.h" |
| #include "hcimsgs.h" |
| #include "l2cdefs.h" |
| #include "log/log.h" |
| #include "sdp_api.h" |
| #include "sdpint.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 */ |
| /******************************************************************************/ |
| static void process_service_search_rsp(tCONN_CB* p_ccb, uint8_t* p_reply, |
| uint8_t* p_reply_end); |
| static void process_service_attr_rsp(tCONN_CB* p_ccb, uint8_t* p_reply, |
| uint8_t* p_reply_end); |
| static void process_service_search_attr_rsp(tCONN_CB* p_ccb, uint8_t* p_reply, |
| uint8_t* p_reply_end); |
| static uint8_t* save_attr_seq(tCONN_CB* p_ccb, uint8_t* p, uint8_t* p_msg_end); |
| static tSDP_DISC_REC* add_record(tSDP_DISCOVERY_DB* p_db, |
| const RawAddress& p_bda); |
| static uint8_t* add_attr(uint8_t* p, tSDP_DISCOVERY_DB* p_db, |
| tSDP_DISC_REC* p_rec, uint16_t attr_id, |
| tSDP_DISC_ATTR* p_parent_attr, uint8_t 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_t* sdpu_build_uuid_seq(uint8_t* p_out, uint16_t num_uuids, |
| tSDP_UUID* p_uuid_list) { |
| uint16_t xx; |
| uint8_t* 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 == LEN_UUID_16) { |
| 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 == LEN_UUID_32) { |
| 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 if (p_uuid_list->len == LEN_UUID_128) { |
| 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); |
| } else { |
| SDP_TRACE_ERROR("SDP: Passed UUID has invalid length %x", |
| p_uuid_list->len); |
| } |
| } |
| |
| /* Now, put in the length */ |
| xx = (uint16_t)(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_t cont_len, |
| uint8_t* p_cont) { |
| uint8_t *p, *p_start, *p_param_len; |
| BT_HDR* p_cmd = (BT_HDR*)osi_malloc(SDP_DATA_BUF_SIZE); |
| uint16_t param_len; |
| |
| /* Prepare the buffer for sending the packet to L2CAP */ |
| p_cmd->offset = L2CAP_MIN_OFFSET; |
| p = p_start = (uint8_t*)(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 (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_t)(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_t)(p - p_start); |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING("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 */ |
| alarm_set_on_mloop(p_ccb->sdp_conn_timer, SDP_INACT_TIMEOUT_MS, |
| sdp_conn_timer_timeout, p_ccb); |
| } |
| |
| /******************************************************************************* |
| * |
| * 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 (p_ccb->is_attr_search) { |
| p_ccb->disc_state = SDP_DISC_WAIT_SEARCH_ATTR; |
| |
| process_service_search_attr_rsp(p_ccb, NULL, NULL); |
| } 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_t *p, rsp_pdu; |
| bool invalid_pdu = true; |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING("sdp_disc_server_rsp disc_state:%d", p_ccb->disc_state); |
| #endif |
| |
| /* stop inactivity timer when we receive a response */ |
| alarm_cancel(p_ccb->sdp_conn_timer); |
| |
| /* Got a reply!! Check what we got back */ |
| p = (uint8_t*)(p_msg + 1) + p_msg->offset; |
| uint8_t* p_end = p + p_msg->len; |
| |
| 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_end); |
| 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_end); |
| 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_end); |
| invalid_pdu = false; |
| } |
| break; |
| } |
| |
| if (invalid_pdu) { |
| SDP_TRACE_WARNING("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_t* p_reply, |
| uint8_t* p_reply_end) { |
| uint16_t xx; |
| uint16_t total, cur_handles, orig; |
| uint8_t 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_WARNING("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; |
| } |
| if (p_reply + cont_len > p_reply_end) { |
| android_errorWriteLog(0x534e4554, "68161546"); |
| 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, NULL); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * 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, bool offset) { |
| unsigned int cpy_len, rem_len; |
| uint32_t list_len; |
| uint8_t* p; |
| uint8_t type; |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| uint8_t num_array[SDP_MAX_LIST_BYTE_COUNT]; |
| uint32_t i; |
| |
| for (i = 0; i < p_ccb->list_len; i++) { |
| snprintf((char*)&num_array[i * 2], sizeof(num_array) - i * 2, "%02X", |
| (uint8_t)(p_ccb->rsp_list[i])); |
| } |
| SDP_TRACE_WARNING("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 = &p_ccb->rsp_list[0]; |
| |
| if (offset) { |
| type = *p++; |
| p = sdpu_get_len_from_type(p, type, &list_len); |
| } |
| if (list_len < cpy_len) { |
| cpy_len = list_len; |
| } |
| rem_len = SDP_MAX_LIST_BYTE_COUNT - (unsigned int)(p - &p_ccb->rsp_list[0]); |
| if (cpy_len > rem_len) { |
| SDP_TRACE_WARNING("rem_len :%d less than cpy_len:%d", rem_len, cpy_len); |
| cpy_len = rem_len; |
| } |
| SDP_TRACE_WARNING( |
| "%s: list_len:%d cpy_len:%d p:%p p_ccb:%p p_db:%p raw_size:%d " |
| "raw_used:%d raw_data:%p", |
| __func__, list_len, cpy_len, p, p_ccb, p_ccb->p_db, |
| p_ccb->p_db->raw_size, p_ccb->p_db->raw_used, p_ccb->p_db->raw_data); |
| 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_t* p_reply, |
| uint8_t* p_reply_end) { |
| uint8_t *p_start, *p_param_len; |
| uint16_t param_len, list_byte_count; |
| bool cont_request_needed = false; |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING("process_service_attr_rsp raw inc:%d", |
| 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_WARNING("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_WARNING("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_WARNING("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_t*)osi_malloc(SDP_MAX_LIST_BYTE_COUNT); |
| 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_WARNING("list_len: %d(attr_rsp)", p_ccb->list_len); |
| |
| /* Check if we need to request a continuation */ |
| SDP_TRACE_WARNING("*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_WARNING("process_service_attr_rsp"); |
| sdp_copy_raw_data(p_ccb, 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*)osi_malloc(SDP_DATA_BUF_SIZE); |
| uint8_t* p; |
| |
| p_msg->offset = L2CAP_MIN_OFFSET; |
| p = p_start = (uint8_t*)(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) { |
| if ((p_reply + *p_reply + 1) <= p_reply_end) { |
| memcpy(p, p_reply, *p_reply + 1); |
| p += *p_reply + 1; |
| } else { |
| android_errorWriteLog(0x534e4554, "68161546"); |
| } |
| } else |
| UINT8_TO_BE_STREAM(p, 0); |
| |
| /* Go back and put the parameter length into the buffer */ |
| param_len = (uint16_t)(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_t)(p - p_start); |
| |
| L2CA_DataWrite(p_ccb->connection_id, p_msg); |
| |
| /* Start inactivity timer */ |
| alarm_set_on_mloop(p_ccb->sdp_conn_timer, SDP_INACT_TIMEOUT_MS, |
| sdp_conn_timer_timeout, p_ccb); |
| } 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_t* p_reply, |
| uint8_t* p_reply_end) { |
| uint8_t *p, *p_start, *p_end, *p_param_len; |
| uint8_t type; |
| uint32_t seq_len; |
| uint16_t param_len, lists_byte_count = 0; |
| bool cont_request_needed = false; |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING("process_service_search_attr_rsp"); |
| #endif |
| /* If p_reply is NULL, we were called for the initial read */ |
| if (p_reply) { |
| if (p_reply + 4 /* transaction ID and length */ + sizeof(lists_byte_count) > |
| p_reply_end) { |
| android_errorWriteLog(0x534e4554, "79884292"); |
| sdp_disconnect(p_ccb, SDP_INVALID_PDU_SIZE); |
| return; |
| } |
| |
| #if (SDP_DEBUG_RAW == TRUE) |
| SDP_TRACE_WARNING("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_WARNING("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_WARNING("list_len: %d, list_byte_count: %d", p_ccb->list_len, |
| lists_byte_count); |
| #endif |
| |
| if (p_reply + lists_byte_count + 1 /* continuation */ > p_reply_end) { |
| android_errorWriteLog(0x534e4554, "79884292"); |
| sdp_disconnect(p_ccb, SDP_INVALID_PDU_SIZE); |
| return; |
| } |
| |
| if (p_ccb->rsp_list == NULL) |
| p_ccb->rsp_list = (uint8_t*)osi_malloc(SDP_MAX_LIST_BYTE_COUNT); |
| 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_WARNING("list_len: %d(search_attr_rsp)", p_ccb->list_len); |
| |
| /* Check if we need to request a continuation */ |
| SDP_TRACE_WARNING("*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_WARNING("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*)osi_malloc(SDP_DATA_BUF_SIZE); |
| uint8_t* p; |
| |
| p_msg->offset = L2CAP_MIN_OFFSET; |
| p = p_start = (uint8_t*)(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 (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) { |
| if ((p_reply + *p_reply + 1) <= p_reply_end) { |
| memcpy(p, p_reply, *p_reply + 1); |
| p += *p_reply + 1; |
| } else { |
| android_errorWriteLog(0x534e4554, "68161546"); |
| } |
| } 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 */ |
| alarm_set_on_mloop(p_ccb->sdp_conn_timer, SDP_INACT_TIMEOUT_MS, |
| sdp_conn_timer_timeout, p_ccb); |
| |
| return; |
| } |
| |
| /*******************************************************************/ |
| /* We now have the full response, which is a sequence of sequences */ |
| /*******************************************************************/ |
| |
| #if (SDP_RAW_DATA_INCLUDED == TRUE) |
| SDP_TRACE_WARNING("process_service_search_attr_rsp"); |
| sdp_copy_raw_data(p_ccb, 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_WARNING("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_t* save_attr_seq(tCONN_CB* p_ccb, uint8_t* p, uint8_t* p_msg_end) { |
| uint32_t seq_len, attr_len; |
| uint16_t attr_id; |
| uint8_t type, *p_seq_end; |
| tSDP_DISC_REC* p_rec; |
| |
| type = *p++; |
| |
| if ((type >> 3) != DATA_ELE_SEQ_DESC_TYPE) { |
| SDP_TRACE_WARNING("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_WARNING("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_WARNING("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_WARNING("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_WARNING("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, const RawAddress& 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; |
| |
| p_rec->remote_bd_addr = p_bda; |
| |
| /* 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_t* add_attr(uint8_t* p, tSDP_DISCOVERY_DB* p_db, |
| tSDP_DISC_REC* p_rec, uint16_t attr_id, |
| tSDP_DISC_ATTR* p_parent_attr, uint8_t nest_level) { |
| tSDP_DISC_ATTR* p_attr; |
| uint32_t attr_len; |
| uint32_t total_len; |
| uint16_t attr_type; |
| uint16_t id; |
| uint8_t type; |
| uint8_t* p_end; |
| uint8_t 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_t)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_t)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_DEBUG ("SDP - attr nest level:%d(list)", nest_level); */ |
| if (nest_level >= MAX_NEST_LEVELS) { |
| SDP_TRACE_ERROR("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_t)(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_t)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_t)attr_len | (attr_type << 12); |
| p_attr->attr_value.v.u16 = (uint16_t)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 { |
| BE_STREAM_TO_ARRAY(p, p_attr->attr_value.v.array, |
| (int32_t)attr_len); |
| } |
| break; |
| default: |
| SDP_TRACE_WARNING("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_DEBUG ("SDP - attr nest level:%d", nest_level); */ |
| if (nest_level >= MAX_NEST_LEVELS) { |
| SDP_TRACE_ERROR("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_DEBUG ("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_t)(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_t)attr_len); |
| break; |
| |
| case BOOLEAN_DESC_TYPE: |
| switch (attr_len) { |
| case 1: |
| p_attr->attr_value.v.u8 = *p++; |
| break; |
| default: |
| SDP_TRACE_WARNING("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_DEBUG ("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_DEBUG ("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_DEBUG ("new ch:0x%x(id:%d)", p_attr, p_attr->attr_id); */ |
| } |
| } |
| |
| return (p); |
| } |
