1 | /*
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2 | * Copyright (C) 2014 BlueKitchen GmbH
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3 | *
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4 | * Redistribution and use in source and binary forms, with or without
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5 | * modification, are permitted provided that the following conditions
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6 | * are met:
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7 | *
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8 | * 1. Redistributions of source code must retain the above copyright
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9 | * notice, this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright
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11 | * notice, this list of conditions and the following disclaimer in the
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12 | * documentation and/or other materials provided with the distribution.
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13 | * 3. Neither the name of the copyright holders nor the names of
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14 | * contributors may be used to endorse or promote products derived
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15 | * from this software without specific prior written permission.
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16 | * 4. Any redistribution, use, or modification is done solely for
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17 | * personal benefit and not for any commercial purpose or for
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18 | * monetary gain.
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19 | *
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20 | * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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23 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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24 | * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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25 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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26 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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27 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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28 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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29 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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30 | * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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31 | * SUCH DAMAGE.
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32 | *
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33 | * Please inquire about commercial licensing options at
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34 | * contact@bluekitchen-gmbh.com
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35 | *
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36 | */
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37 |
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38 | #include "btstack-config.h"
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39 |
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40 | #include <stdint.h>
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41 |
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42 | #include <btstack/hci_cmds.h>
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43 | #include <btstack/run_loop.h>
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44 | #include <btstack/sdp_util.h>
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45 |
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46 | #include <kernel.h>
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47 | #include "kernel_cfg.h"
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48 | #include "target_syssvc.h"
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49 |
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50 | #include "debug.h"
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51 | #include "hci.h"
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52 | #include "btstack_memory.h"
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53 | #include "hci_dump.h"
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54 | #include "l2cap.h"
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55 | #include "sdp_parser.h"
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56 | #include "sdp_client.h"
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57 | #include "sdp_query_util.h"
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58 | #include "sdp.h"
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59 | #include "pan.h"
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60 | #include "panu_main.h"
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61 |
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62 | extern uint16_t rfcomm_channel_id;
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63 |
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64 | static int record_id = -1;
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65 | static uint16_t bnep_l2cap_psm = 0;
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66 | static uint32_t bnep_remote_uuid = 0;
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67 | static uint16_t bnep_version = 0;
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68 | static uint16_t bnep_cid = 0;
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69 | static bool_t bnep_do_connect = false;
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70 |
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71 | static uint16_t sdp_bnep_l2cap_psm = 0;
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72 | static uint16_t sdp_bnep_version = 0;
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73 | static uint32_t sdp_bnep_remote_uuid = 0;
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74 |
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75 | extern uint8_t attribute_value[];
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76 | extern const unsigned int attribute_value_buffer_size;
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77 |
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78 | static bd_addr_t remote_addr;
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79 |
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80 | extern uint8_t spp_service_buffer[120];
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81 | extern uint8_t bnep_service_buffer[256];
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82 |
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83 | extern char bt_localname[sizeof(TARGET_NAME"0000")];
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84 |
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85 | /*************** NAP server routines *********************/
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86 |
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87 | char * get_string_from_data_element(uint8_t * element);
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88 |
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89 | /* @section SDP parser callback
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90 | *
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91 | * @text The SDP parsers retrieves the BNEP PAN UUID as explained in
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92 | * Section [on SDP BNEP Query example](#sec:sdpbnepqueryExample}.
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93 | */
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94 | static void handle_sdp_client_record_complete(void)
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95 | {
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96 | log_info("SDP BNEP Record complete");
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97 |
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98 | // accept first entry or if we foudn a PANU and only have a NAP yet
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99 | if ((bnep_remote_uuid == 0) || (sdp_bnep_remote_uuid == BNEP_UUID_PANU && bnep_remote_uuid == BNEP_UUID_NAP)) {
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100 | bnep_l2cap_psm = sdp_bnep_l2cap_psm;
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101 | bnep_remote_uuid = sdp_bnep_remote_uuid;
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102 | bnep_version = sdp_bnep_version;
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103 | }
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104 | }
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105 |
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106 | /* SDP parser callback */
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107 | static void handle_sdp_client_query_result(sdp_query_event_t *event)
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108 | {
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109 | sdp_query_attribute_value_event_t *value_event;
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110 | sdp_query_complete_event_t *complete_event;
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111 | des_iterator_t des_list_it;
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112 | des_iterator_t prot_it;
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113 | char *str;
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114 |
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115 | switch (event->type) {
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116 | case SDP_QUERY_ATTRIBUTE_VALUE:
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117 | value_event = (sdp_query_attribute_value_event_t*)event;
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118 |
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119 | // Handle new SDP record
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120 | if (value_event->record_id != record_id) {
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121 | handle_sdp_client_record_complete();
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122 | // next record started
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123 | record_id = value_event->record_id;
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124 | log_info("SDP Record: Nr: %d", record_id);
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125 | }
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126 |
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127 | if (value_event->attribute_length <= attribute_value_buffer_size) {
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128 | attribute_value[value_event->data_offset] = value_event->data;
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129 |
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130 | if ((uint16_t)(value_event->data_offset + 1) == value_event->attribute_length) {
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131 | //printf("SDP Attribute Data:");
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132 | //printf_hexdump(attribute_value, value_event->attribute_length);
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133 |
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134 | switch (value_event->attribute_id) {
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135 | case SDP_ServiceClassIDList:
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136 | if (de_get_element_type(attribute_value) != DE_DES) break;
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137 | for (des_iterator_init(&des_list_it, attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) {
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138 | uint8_t * element = des_iterator_get_element(&des_list_it);
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139 | if (de_get_element_type(element) != DE_UUID) continue;
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140 | uint32_t uuid = de_get_uuid32(element);
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141 | switch (uuid) {
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142 | case BNEP_UUID_PANU:
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143 | case BNEP_UUID_NAP:
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144 | case BNEP_UUID_GN:
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145 | log_info("SDP Attribute 0x%04x: BNEP PAN protocol UUID: %04x", value_event->attribute_id, uuid);
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146 | sdp_bnep_remote_uuid = uuid;
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147 | break;
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148 | default:
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149 | log_info("SDP Attribute 0x%04x: UUID: %04x", value_event->attribute_id, uuid);
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150 | break;
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151 | }
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152 | }
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153 | break;
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154 | // 0x0100 "Service Name"
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155 | case 0x0100:
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156 | // 0x0101 "Service Description"
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157 | case 0x0101:
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158 | str = get_string_from_data_element(attribute_value);
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159 | log_info("SDP Attribute: 0x%04x: %s", value_event->attribute_id, str);
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160 | free(str);
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161 | break;
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162 | case SDP_ProtocolDescriptorList: {
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163 | log_info("SDP Attribute: 0x%04x", value_event->attribute_id);
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164 |
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165 | for (des_iterator_init(&des_list_it, attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) {
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166 | uint8_t *des_element;
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167 | uint8_t *element;
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168 | uint32_t uuid;
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169 |
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170 | if (des_iterator_get_type(&des_list_it) != DE_DES) continue;
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171 |
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172 | des_element = des_iterator_get_element(&des_list_it);
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173 | des_iterator_init(&prot_it, des_element);
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174 | element = des_iterator_get_element(&prot_it);
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175 |
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176 | if (de_get_element_type(element) != DE_UUID) continue;
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177 |
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178 | uuid = de_get_uuid32(element);
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179 | switch (uuid) {
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180 | case SDP_L2CAPProtocol:
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181 | if (!des_iterator_has_more(&prot_it)) continue;
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182 | des_iterator_next(&prot_it);
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183 | de_element_get_uint16(des_iterator_get_element(&prot_it), &sdp_bnep_l2cap_psm);
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184 | break;
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185 | case SDP_BNEPProtocol:
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186 | if (!des_iterator_has_more(&prot_it)) continue;
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187 | des_iterator_next(&prot_it);
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188 | de_element_get_uint16(des_iterator_get_element(&prot_it), &sdp_bnep_version);
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189 | break;
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190 | default:
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191 | log_info("uuid 0x%04x", uuid);
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192 | break;
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193 | }
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194 | }
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195 | log_info("Summary: uuid 0x%04x, l2cap_psm 0x%04x, bnep_version 0x%04x", sdp_bnep_remote_uuid, sdp_bnep_l2cap_psm, sdp_bnep_version);
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196 | break;
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197 | }
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198 | default:
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199 | break;
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200 | }
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201 | }
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202 | }
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203 | else {
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204 | log_error("SDP attribute value buffer size exceeded: available %d, required %d", attribute_value_buffer_size, value_event->attribute_length);
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205 | }
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206 | break;
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207 |
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208 | case SDP_QUERY_COMPLETE:
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209 | handle_sdp_client_record_complete();
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210 | complete_event = (sdp_query_complete_event_t*)event;
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211 | log_error("General query done with status %d, bnep psm %04x.", complete_event->status, bnep_l2cap_psm);
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212 | if (bnep_l2cap_psm) {
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213 | bnep_do_connect = complete_event->status == 0;
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214 | }
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215 | else {
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216 | log_error("No BNEP service found");
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217 | }
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218 | break;
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219 | }
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220 | }
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221 |
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222 | static void packet_handler(void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size)
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223 | {
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224 | uint8_t event;
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225 | bd_addr_t event_addr;
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226 | uint8_t rfcomm_channel_nr;
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227 | uint16_t uuid_source;
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228 | uint16_t uuid_dest;
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229 | uint16_t mtu;
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230 |
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231 | switch (packet_type) {
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232 | case HCI_EVENT_PACKET:
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233 | event = packet[0];
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234 | switch (event) {
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235 | case BTSTACK_EVENT_STATE:
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236 | /* BT Stack activated, get started */
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237 | if (packet[2] == HCI_STATE_WORKING) {
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238 | hci_send_cmd(&hci_write_local_name, bt_localname);
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239 | }
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240 | break;
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241 |
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242 | case BTSTACK_EVENT_NR_CONNECTIONS_CHANGED:
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243 | if ((packet[2] == 0) && bnep_do_connect) {
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244 | bnep_do_connect = false;
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245 | /* Create BNEP connection */
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246 | bnep_connect(NULL, &remote_addr, bnep_l2cap_psm, bnep_remote_uuid);
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247 | }
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248 | break;
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249 |
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250 | case HCI_EVENT_COMMAND_COMPLETE:
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251 | if (COMMAND_COMPLETE_EVENT(packet, hci_read_bd_addr)) {
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252 | bt_flip_addr(event_addr, &packet[6]);
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253 | log_info("BD-ADDR: %s", bd_addr_to_str(event_addr));
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254 |
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255 | snprintf(bt_localname, sizeof(bt_localname), TARGET_NAME"%04x", ((event_addr[4] << 8) | event_addr[5]));
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256 | gap_set_local_name(bt_localname);
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257 | break;
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258 | }
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259 | if (COMMAND_COMPLETE_EVENT(packet, hci_write_local_name)) {
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260 | hci_discoverable_control(1);
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261 | break;
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262 | }
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263 | break;
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264 |
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265 | case HCI_EVENT_LINK_KEY_REQUEST:
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266 | // deny link key request
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267 | log_info("Link key request");
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268 | bt_flip_addr(event_addr, &packet[2]);
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269 | hci_send_cmd(&hci_link_key_request_negative_reply, &event_addr);
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270 | break;
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271 |
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272 | case HCI_EVENT_PIN_CODE_REQUEST:
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273 | // inform about pin code request
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274 | log_info("Pin code request - using '0000'");
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275 | bt_flip_addr(event_addr, &packet[2]);
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276 | hci_send_cmd(&hci_pin_code_request_reply, &event_addr, 4, "0000");
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277 | break;
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278 |
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279 | case HCI_EVENT_USER_CONFIRMATION_REQUEST:
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280 | // inform about user confirmation request
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281 | log_info("HCI User Confirmation Request with numeric value '%06u'", READ_BT_32(packet, 8));
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282 | log_info("HCI User Confirmation Auto accept");
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283 | break;
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284 |
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285 | case RFCOMM_EVENT_INCOMING_CONNECTION:
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286 | // data: event (8), len(8), address(48), channel (8), rfcomm_cid (16)
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287 | bt_flip_addr(event_addr, &packet[2]);
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288 | rfcomm_channel_nr = packet[8];
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289 | rfcomm_channel_id = READ_BT_16(packet, 9);
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290 | log_info("RFCOMM channel %u requested for %s", rfcomm_channel_nr, bd_addr_to_str(event_addr));
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291 | rfcomm_accept_connection_internal(rfcomm_channel_id);
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292 | break;
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293 |
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294 | case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE:
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295 | // data: event(8), len(8), status (8), address (48), server channel(8), rfcomm_cid(16), max frame size(16)
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296 | if (packet[2]) {
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297 | log_info("RFCOMM channel open failed, status %u", packet[2]);
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298 | }
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299 | else {
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300 | rfcomm_channel_id = READ_BT_16(packet, 12);
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301 | mtu = READ_BT_16(packet, 14);
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302 | log_info("RFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u", rfcomm_channel_id, mtu);
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303 | }
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304 | break;
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305 |
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306 | case RFCOMM_EVENT_CHANNEL_CLOSED:
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307 | log_info("RFCOMM channel closed");
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308 | rfcomm_channel_id = 0;
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309 | break;
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310 |
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311 | case BNEP_EVENT_OPEN_CHANNEL_COMPLETE:
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312 | if (packet[2]) {
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313 | log_info("BNEP channel open failed, status %02x", packet[2]);
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314 | }
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315 | else {
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316 | // data: event(8), len(8), status (8), bnep source uuid (16), bnep destination uuid (16), remote_address (48)
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317 | bnep_cid = READ_BT_16(packet, 3);
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318 | uuid_source = READ_BT_16(packet, 5);
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319 | uuid_dest = READ_BT_16(packet, 7);
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320 | mtu = READ_BT_16(packet, 9);
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321 | //bt_flip_addr(remote_addr, &packet[11]);
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322 | memcpy(&remote_addr, &packet[11], sizeof(bd_addr_t));
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323 | log_info("BNEP connection open succeeded to %s source UUID 0x%04x dest UUID: 0x%04x, max frame size %u", bd_addr_to_str(event_addr), uuid_source, uuid_dest, mtu);
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324 | /* Setup network interface */
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325 | btstack_network_up(bnep_cid, (uint8_t *)hci_local_bd_addr(), remote_addr);
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326 | log_info("Network Interface %s activated", btstack_network_get_name(bnep_cid));
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327 | }
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328 | break;
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329 |
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330 | case BNEP_EVENT_CHANNEL_TIMEOUT:
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331 | log_info("BNEP channel timeout! Channel will be closed");
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332 | break;
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333 |
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334 | case BNEP_EVENT_CHANNEL_CLOSED:
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335 | bnep_cid = READ_BT_16(packet, 2);
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336 | bt_channel_closed(bnep_cid);
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337 | break;
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338 |
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339 | case BNEP_EVENT_READY_TO_SEND:
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340 | bnep_cid = READ_BT_16(packet, 2);
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341 | bt_send_packet(bnep_cid);
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342 | break;
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343 |
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344 | default:
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345 | break;
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346 | }
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347 | break;
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348 |
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349 | case RFCOMM_DATA_PACKET:
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350 | // loopback
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351 | if (rfcomm_channel_id) {
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352 | int err = rfcomm_send_internal(rfcomm_channel_id, packet, size);
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353 | if (err) {
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354 | log_error("rfcomm_send_internal -> error %d", err);
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355 | }
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356 | }
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357 | break;
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358 |
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359 | case BNEP_DATA_PACKET:
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360 | bt_recv_packet(channel, packet, size);
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361 | break;
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362 |
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363 | default:
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364 | break;
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365 | }
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366 | }
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367 |
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368 | void nap_init(void)
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369 | {
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370 | const hci_transport_t *transport;
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371 | bt_control_t * control;
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372 | hci_uart_config_t * config;
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373 | remote_device_db_t * remote_db;
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374 | service_record_item_t *spp_service_record_item;
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375 | service_record_item_t *bnep_service_record_item;
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376 |
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377 | //hci_dump_open("", HCI_DUMP_PACKETLOGGER);
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378 |
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379 | log_info("bt初期化...");
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380 |
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381 | // start with BTstack init - especially configure HCI Transport
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382 | btstack_memory_init();
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383 | run_loop_init(RUN_LOOP_EMBEDDED);
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384 |
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385 | /* Initialize HCI */
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386 | log_info("HCI初期化...");
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387 | transport = hci_transport_usb_instance();
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388 | control = NULL;
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389 | config = NULL;
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390 | remote_db = (remote_device_db_t *)&remote_device_db_memory;
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391 | hci_init(transport, config, control, remote_db);
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392 | hci_set_class_of_device(0x820300/*0x820810*/);
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393 |
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394 | /* Initialize L2CAP */
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395 | log_info("L2CAP初期化...");
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396 | l2cap_init();
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397 | l2cap_register_packet_handler(packet_handler);
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398 |
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399 | /* Initialise SDP, create record for SPP and register with SDP */
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400 | log_info("SDP初期化...");
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401 | sdp_init();
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402 |
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403 | /* Initialize RFCOMM */
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404 | log_info("RFCOMM初期化...");
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405 | rfcomm_init();
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406 | rfcomm_register_packet_handler(packet_handler);
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407 | rfcomm_register_service_internal(NULL, RFCOMM_SERVER_CHANNEL, 0xffff); // reserved channel, mtu=100
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408 |
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409 | /* Initialise BNEP */
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410 | log_info("BNEP初期化...");
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411 | bnep_init();
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412 | bnep_register_packet_handler(packet_handler);
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413 | bnep_register_service(NULL, BNEP_UUID_NAP, BNEP_MTU_MIN); /* Minimum L2CAP MTU for bnep is 1691 bytes */
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414 |
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415 | memset(spp_service_buffer, 0, sizeof(spp_service_buffer));
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416 | memset(bnep_service_buffer, 0, sizeof(bnep_service_buffer));
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417 |
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418 | // サービス定義
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419 | spp_service_record_item = (service_record_item_t *)spp_service_buffer;
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420 | bnep_service_record_item = (service_record_item_t *)bnep_service_buffer;
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421 |
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422 | log_info("SPPサービス登録...");
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423 | sdp_create_spp_service((uint8_t*)&spp_service_record_item->service_record, 1, "RX SPP");
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424 | de_dump_data_element((uint8_t*)spp_service_record_item->service_record);
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425 | log_info("SSP SDP service buffer size: %u", (uint16_t)(sizeof(service_record_item_t) + de_get_len((uint8_t*)spp_service_record_item->service_record)));
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426 | sdp_register_service_internal(NULL, spp_service_record_item);
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427 |
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428 | log_info("BNEPサービス登録...");
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429 | pan_create_nap_service((uint8_t*)&bnep_service_record_item->service_record, "RX NAP", "RX NAP", BNEP_SECURITY_NONE,
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430 | PAN_NET_ACCESS_TYPE_100MB_ETHERNET, 0x0001312D0/*10Mb/sec*/, NULL, NULL);
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431 | de_dump_data_element((uint8_t*)bnep_service_record_item->service_record);
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432 | log_info("NAP SDP service buffer size: %u", (uint16_t)(sizeof(service_record_item_t) + de_get_len((uint8_t*)bnep_service_record_item->service_record)));
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433 | sdp_register_service_internal(NULL, bnep_service_record_item);
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434 |
|
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435 | // Secure Simple Pairing configuration -> just works
|
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436 | hci_ssp_set_enable(1);
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437 | hci_ssp_set_io_capability(SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT);
|
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438 | hci_ssp_set_auto_accept(1);
|
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439 |
|
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440 | /* Turn on the device */
|
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441 | log_info("HCI電源ON...");
|
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442 | hci_power_control(HCI_POWER_ON);
|
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443 |
|
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444 | /* Initialise SDP */
|
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445 | sdp_parser_init();
|
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446 | sdp_parser_register_callback(handle_sdp_client_query_result);
|
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447 | }
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