1 | /*
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2 | * Copyright (C) 2009-2012 by Matthias Ringwald
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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 MATTHIAS RINGWALD 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 btstack@ringwald.ch
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34 | *
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35 | */
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36 |
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37 | /*
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38 | * hci.c
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39 | *
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40 | * Created by Matthias Ringwald on 4/29/09.
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41 | *
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42 | */
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43 |
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44 | #include "btstack-config.h"
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45 |
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46 | #include "hci.h"
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47 | #include "gap.h"
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48 |
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49 | #include <stdarg.h>
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50 | #include <string.h>
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51 | #include <stdio.h>
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52 |
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53 | #ifndef EMBEDDED
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54 | #ifdef _WIN32
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55 | #include "Winsock2.h"
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56 | #else
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57 | #include <unistd.h> // gethostbyname
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58 | #endif
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59 | #include <btstack/version.h>
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60 | #endif
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61 |
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62 | #include "btstack_memory.h"
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63 | #include "debug.h"
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64 | #include "hci_dump.h"
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65 |
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66 | #include <btstack/linked_list.h>
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67 | #include <btstack/hci_cmds.h>
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68 |
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69 | #define HCI_CONNECTION_TIMEOUT_MS 10000
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70 |
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71 | #define HCI_INTIALIZING_SUBSTATE_AFTER_SLEEP 11
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72 |
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73 | #ifdef USE_BLUETOOL
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74 | #include "../platforms/ios/src/bt_control_iphone.h"
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75 | #endif
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76 |
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77 | static void hci_update_scan_enable(void);
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78 | static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection);
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79 | static void hci_connection_timeout_handler(timer_source_t *timer);
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80 | static void hci_connection_timestamp(hci_connection_t *connection);
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81 | static int hci_power_control_on(void);
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82 | static void hci_power_control_off(void);
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83 | static void hci_state_reset();
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84 |
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85 | // the STACK is here
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86 | #ifndef HAVE_MALLOC
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87 | /*static*/ hci_stack_t hci_stack_static;
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88 | #endif
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89 | static hci_stack_t * hci_stack = NULL;
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90 |
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91 | // test helper
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92 | static uint8_t disable_l2cap_timeouts = 0;
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93 |
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94 | /**
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95 | * create connection for given address
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96 | *
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97 | * @return connection OR NULL, if no memory left
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98 | */
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99 | static hci_connection_t * create_connection_for_bd_addr_and_type(bd_addr_t addr, bd_addr_type_t addr_type){
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100 | hci_connection_t * conn;
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101 | log_info("create_connection_for_addr %s", bd_addr_to_str(addr));
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102 | conn = btstack_memory_hci_connection_get();
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103 | if (!conn) return NULL;
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104 | BD_ADDR_COPY(conn->address, addr);
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105 | conn->address_type = addr_type;
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106 | conn->con_handle = 0xffff;
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107 | conn->authentication_flags = AUTH_FLAGS_NONE;
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108 | conn->bonding_flags = 0;
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109 | conn->requested_security_level = LEVEL_0;
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110 | linked_item_set_user(&conn->timeout.item, conn);
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111 | conn->timeout.process = hci_connection_timeout_handler;
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112 | hci_connection_timestamp(conn);
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113 | conn->acl_recombination_length = 0;
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114 | conn->acl_recombination_pos = 0;
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115 | conn->num_acl_packets_sent = 0;
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116 | conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE;
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117 | linked_list_add(&hci_stack->connections, (linked_item_t *) conn);
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118 | return conn;
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119 | }
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120 |
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121 |
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122 | /**
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123 | * get le connection parameter range
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124 | *
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125 | * @return le connection parameter range struct
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126 | */
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127 | le_connection_parameter_range_t gap_le_get_connection_parameter_range(){
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128 | return hci_stack->le_connection_parameter_range;
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129 | }
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130 |
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131 | /**
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132 | * set le connection parameter range
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133 | *
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134 | */
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135 |
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136 | void gap_le_set_connection_parameter_range(le_connection_parameter_range_t range){
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137 | hci_stack->le_connection_parameter_range.le_conn_interval_min = range.le_conn_interval_min;
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138 | hci_stack->le_connection_parameter_range.le_conn_interval_max = range.le_conn_interval_max;
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139 | hci_stack->le_connection_parameter_range.le_conn_interval_min = range.le_conn_latency_min;
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140 | hci_stack->le_connection_parameter_range.le_conn_interval_max = range.le_conn_latency_max;
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141 | hci_stack->le_connection_parameter_range.le_supervision_timeout_min = range.le_supervision_timeout_min;
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142 | hci_stack->le_connection_parameter_range.le_supervision_timeout_max = range.le_supervision_timeout_max;
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143 | }
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144 |
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145 | /**
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146 | * get hci connections iterator
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147 | *
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148 | * @return hci connections iterator
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149 | */
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150 |
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151 | void hci_connections_get_iterator(linked_list_iterator_t *it){
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152 | linked_list_iterator_init(it, &hci_stack->connections);
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153 | }
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154 |
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155 | /**
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156 | * get connection for a given handle
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157 | *
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158 | * @return connection OR NULL, if not found
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159 | */
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160 | hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){
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161 | linked_list_iterator_t it;
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162 | linked_list_iterator_init(&it, &hci_stack->connections);
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163 | while (linked_list_iterator_has_next(&it)){
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164 | hci_connection_t * item = (hci_connection_t *) linked_list_iterator_next(&it);
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165 | if ( item->con_handle == con_handle ) {
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166 | return item;
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167 | }
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168 | }
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169 | return NULL;
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170 | }
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171 |
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172 | /**
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173 | * get connection for given address
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174 | *
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175 | * @return connection OR NULL, if not found
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176 | */
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177 | hci_connection_t * hci_connection_for_bd_addr_and_type(bd_addr_t * addr, bd_addr_type_t addr_type){
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178 | linked_list_iterator_t it;
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179 | linked_list_iterator_init(&it, &hci_stack->connections);
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180 | while (linked_list_iterator_has_next(&it)){
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181 | hci_connection_t * connection = (hci_connection_t *) linked_list_iterator_next(&it);
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182 | if (connection->address_type != addr_type) continue;
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183 | if (memcmp(addr, connection->address, 6) != 0) continue;
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184 | return connection;
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185 | }
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186 | return NULL;
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187 | }
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188 |
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189 | static void hci_connection_timeout_handler(timer_source_t *timer){
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190 | hci_connection_t * connection = (hci_connection_t *) linked_item_get_user(&timer->item);
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191 | #ifdef HAVE_TIME
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192 | struct timeval tv;
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193 | gettimeofday(&tv, NULL);
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194 | if (tv.tv_sec >= connection->timestamp.tv_sec + HCI_CONNECTION_TIMEOUT_MS/1000) {
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195 | // connections might be timed out
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196 | hci_emit_l2cap_check_timeout(connection);
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197 | }
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198 | #endif
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199 | #ifdef HAVE_TICK
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200 | if (embedded_get_ticks() > connection->timestamp + embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){
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201 | // connections might be timed out
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202 | hci_emit_l2cap_check_timeout(connection);
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203 | }
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204 | #endif
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205 | run_loop_set_timer(timer, HCI_CONNECTION_TIMEOUT_MS);
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206 | run_loop_add_timer(timer);
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207 | }
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208 |
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209 | static void hci_connection_timestamp(hci_connection_t *connection){
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210 | #ifdef HAVE_TIME
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211 | gettimeofday(&connection->timestamp, NULL);
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212 | #endif
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213 | #ifdef HAVE_TICK
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214 | connection->timestamp = embedded_get_ticks();
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215 | #endif
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216 | }
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217 |
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218 |
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219 | /*inline*/ static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){
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220 | conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags);
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221 | }
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222 |
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223 | /*inline*/ static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){
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224 | conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags);
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225 | }
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226 |
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227 |
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228 | /**
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229 | * add authentication flags and reset timer
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230 | * @note: assumes classic connection
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231 | */
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232 | static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){
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233 | bd_addr_t addr;
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234 | hci_connection_t * conn;
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235 | reverse_bd_addr(*(bd_addr_t *) bd_addr, addr);
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236 | conn = hci_connection_for_bd_addr_and_type(&addr, BD_ADDR_TYPE_CLASSIC);
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237 | if (conn) {
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238 | connectionSetAuthenticationFlags(conn, flags);
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239 | hci_connection_timestamp(conn);
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240 | }
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241 | }
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242 |
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243 | int hci_authentication_active_for_handle(hci_con_handle_t handle){
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244 | hci_connection_t * conn = hci_connection_for_handle(handle);
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245 | if (!conn) return 0;
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246 | if (conn->authentication_flags & LEGACY_PAIRING_ACTIVE) return 1;
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247 | if (conn->authentication_flags & SSP_PAIRING_ACTIVE) return 1;
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248 | return 0;
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249 | }
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250 |
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251 | void hci_drop_link_key_for_bd_addr(bd_addr_t *addr){
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252 | if (hci_stack->remote_device_db) {
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253 | hci_stack->remote_device_db->delete_link_key(addr);
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254 | }
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255 | }
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256 |
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257 | int hci_is_le_connection(hci_connection_t * connection){
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258 | return connection->address_type == BD_ADDR_TYPE_LE_PUBLIC ||
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259 | connection->address_type == BD_ADDR_TYPE_LE_RANDOM;
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260 | }
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261 |
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262 |
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263 | /**
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264 | * count connections
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265 | */
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266 | static int nr_hci_connections(void){
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267 | int count = 0;
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268 | linked_item_t *it;
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269 | for (it = (linked_item_t *) hci_stack->connections; it ; it = it->next, count++);
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270 | return count;
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271 | }
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272 |
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273 | /**
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274 | * Dummy handler called by HCI
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275 | */
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276 | static void dummy_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){
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277 | }
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278 |
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279 | uint8_t hci_number_outgoing_packets(hci_con_handle_t handle){
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280 | hci_connection_t * connection = hci_connection_for_handle(handle);
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281 | if (!connection) {
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282 | log_error("hci_number_outgoing_packets: connection for handle %u does not exist!", handle);
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283 | return 0;
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284 | }
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285 | return connection->num_acl_packets_sent;
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286 | }
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287 |
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288 | uint8_t hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){
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289 |
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290 | int num_packets_sent_classic = 0;
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291 | int num_packets_sent_le = 0;
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292 |
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293 | bd_addr_type_t address_type = BD_ADDR_TYPE_UNKNOWN;
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294 |
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295 | linked_item_t *it;
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296 | int free_slots_classic;
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297 | int free_slots_le;
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298 |
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299 | for (it = (linked_item_t *) hci_stack->connections; it ; it = it->next){
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300 | hci_connection_t * connection = (hci_connection_t *) it;
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301 | if (connection->address_type == BD_ADDR_TYPE_CLASSIC){
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302 | num_packets_sent_classic += connection->num_acl_packets_sent;
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303 | } else {
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304 | num_packets_sent_le += connection->num_acl_packets_sent;
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305 | }
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306 | if (connection->con_handle == con_handle){
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307 | address_type = connection->address_type;
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308 | }
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309 | }
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310 |
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311 | free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic;
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312 | free_slots_le = 0;
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313 |
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314 | if (free_slots_classic < 0){
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315 | log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num);
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316 | return 0;
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317 | }
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318 |
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319 | if (hci_stack->le_acl_packets_total_num){
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320 | // if we have LE slots, they are used
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321 | free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le;
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322 | if (free_slots_le < 0){
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323 | log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num);
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324 | return 0;
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325 | }
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326 | } else {
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327 | // otherwise, classic slots are used for LE, too
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328 | free_slots_classic -= num_packets_sent_le;
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329 | if (free_slots_classic < 0){
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330 | log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num);
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331 | return 0;
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332 | }
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333 | }
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334 |
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335 | switch (address_type){
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336 | case BD_ADDR_TYPE_UNKNOWN:
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337 | log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle);
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338 | return 0;
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339 |
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340 | case BD_ADDR_TYPE_CLASSIC:
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341 | return free_slots_classic;
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342 |
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343 | default:
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344 | if (hci_stack->le_acl_packets_total_num){
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345 | return free_slots_le;
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346 | }
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347 | return free_slots_classic;
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348 | }
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349 | }
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350 |
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351 |
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352 | // @deprecated
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353 | int hci_can_send_packet_now(uint8_t packet_type){
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354 | switch (packet_type) {
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355 | case HCI_ACL_DATA_PACKET:
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356 | return hci_can_send_prepared_acl_packet_now(0);
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357 | case HCI_COMMAND_DATA_PACKET:
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358 | return hci_can_send_command_packet_now();
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359 | default:
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360 | return 0;
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361 | }
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362 | }
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363 |
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364 | // @deprecated
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365 | // same as hci_can_send_packet_now, but also checks if packet buffer is free for use
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366 | int hci_can_send_packet_now_using_packet_buffer(uint8_t packet_type){
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367 |
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368 | if (hci_stack->hci_packet_buffer_reserved) return 0;
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369 |
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370 | switch (packet_type) {
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371 | case HCI_ACL_DATA_PACKET:
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372 | return hci_can_send_acl_packet_now(0);
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373 | case HCI_COMMAND_DATA_PACKET:
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374 | return hci_can_send_command_packet_now();
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375 | default:
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376 | return 0;
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377 | }
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378 | }
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379 |
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380 |
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381 | // new functions replacing hci_can_send_packet_now[_using_packet_buffer]
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382 | int hci_can_send_command_packet_now(void){
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383 | if (hci_stack->hci_packet_buffer_reserved) return 0;
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384 |
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385 | // check for async hci transport implementations
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386 | if (hci_stack->hci_transport->can_send_packet_now){
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387 | if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){
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388 | return 0;
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389 | }
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390 | }
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391 |
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392 | return hci_stack->num_cmd_packets > 0;
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393 | }
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394 |
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395 | int hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) {
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396 | // check for async hci transport implementations
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397 | if (hci_stack->hci_transport->can_send_packet_now){
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398 | if (!hci_stack->hci_transport->can_send_packet_now(HCI_ACL_DATA_PACKET)){
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399 | return 0;
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400 | }
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401 | }
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402 | return hci_number_free_acl_slots_for_handle(con_handle) > 0;
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403 | }
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404 |
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405 | int hci_can_send_acl_packet_now(hci_con_handle_t con_handle){
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406 | if (hci_stack->hci_packet_buffer_reserved) return 0;
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407 | return hci_can_send_prepared_acl_packet_now(con_handle);
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408 | }
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409 |
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410 | // used for internal checks in l2cap[-le].c
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411 | int hci_is_packet_buffer_reserved(void){
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412 | return hci_stack->hci_packet_buffer_reserved;
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413 | }
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414 |
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415 | // reserves outgoing packet buffer. @returns 1 if successful
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416 | int hci_reserve_packet_buffer(void){
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417 | if (hci_stack->hci_packet_buffer_reserved) {
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418 | log_error("hci_reserve_packet_buffer called but buffer already reserved");
|
---|
419 | return 0;
|
---|
420 | }
|
---|
421 | hci_stack->hci_packet_buffer_reserved = 1;
|
---|
422 | return 1;
|
---|
423 | }
|
---|
424 |
|
---|
425 | void hci_release_packet_buffer(void){
|
---|
426 | hci_stack->hci_packet_buffer_reserved = 0;
|
---|
427 | }
|
---|
428 |
|
---|
429 | // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call
|
---|
430 | int hci_transport_synchronous(void){
|
---|
431 | return hci_stack->hci_transport->can_send_packet_now == NULL;
|
---|
432 | }
|
---|
433 |
|
---|
434 | uint16_t hci_max_acl_le_data_packet_length(void){
|
---|
435 | return hci_stack->le_data_packets_length > 0 ? hci_stack->le_data_packets_length : hci_stack->acl_data_packet_length;
|
---|
436 | }
|
---|
437 |
|
---|
438 | static int hci_send_acl_packet_fragments(hci_connection_t *connection){
|
---|
439 |
|
---|
440 | uint16_t max_acl_data_packet_length;
|
---|
441 | int err;
|
---|
442 | // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle);
|
---|
443 |
|
---|
444 | // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers
|
---|
445 | max_acl_data_packet_length = hci_stack->acl_data_packet_length;
|
---|
446 | if (hci_is_le_connection(connection) && hci_stack->le_data_packets_length > 0){
|
---|
447 | max_acl_data_packet_length = hci_stack->le_data_packets_length;
|
---|
448 | }
|
---|
449 |
|
---|
450 | // testing: reduce buffer to minimum
|
---|
451 | // max_acl_data_packet_length = 52;
|
---|
452 |
|
---|
453 | // multiple packets could be send on a synchronous HCI transport
|
---|
454 | while (1){
|
---|
455 |
|
---|
456 | // get current data
|
---|
457 | const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4;
|
---|
458 | int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos;
|
---|
459 | int more_fragments = 0;
|
---|
460 | uint8_t * packet;
|
---|
461 | int size;
|
---|
462 |
|
---|
463 | // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length
|
---|
464 | if (current_acl_data_packet_length > max_acl_data_packet_length){
|
---|
465 | more_fragments = 1;
|
---|
466 | current_acl_data_packet_length = max_acl_data_packet_length;
|
---|
467 | }
|
---|
468 |
|
---|
469 | // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent)
|
---|
470 | if (acl_header_pos > 0){
|
---|
471 | uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0);
|
---|
472 | handle_and_flags = (handle_and_flags & 0xcfff) | (1 << 12);
|
---|
473 | little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags);
|
---|
474 | }
|
---|
475 |
|
---|
476 | // update header len
|
---|
477 | little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2, current_acl_data_packet_length);
|
---|
478 |
|
---|
479 | // count packet
|
---|
480 | connection->num_acl_packets_sent++;
|
---|
481 |
|
---|
482 | // send packet
|
---|
483 | packet = &hci_stack->hci_packet_buffer[acl_header_pos];
|
---|
484 | size = current_acl_data_packet_length + 4;
|
---|
485 | hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size);
|
---|
486 | err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size);
|
---|
487 |
|
---|
488 | // done yet?
|
---|
489 | if (!more_fragments) break;
|
---|
490 |
|
---|
491 | // update start of next fragment to send
|
---|
492 | hci_stack->acl_fragmentation_pos += current_acl_data_packet_length;
|
---|
493 |
|
---|
494 | // can send more?
|
---|
495 | if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return err;
|
---|
496 | }
|
---|
497 |
|
---|
498 | // done
|
---|
499 | hci_stack->acl_fragmentation_pos = 0;
|
---|
500 | hci_stack->acl_fragmentation_total_size = 0;
|
---|
501 |
|
---|
502 | // release buffer now for synchronous transport
|
---|
503 | if (hci_transport_synchronous()){
|
---|
504 | hci_release_packet_buffer();
|
---|
505 | }
|
---|
506 |
|
---|
507 | return err;
|
---|
508 | }
|
---|
509 |
|
---|
510 | // pre: caller has reserved the packet buffer
|
---|
511 | int hci_send_acl_packet_buffer(int size){
|
---|
512 |
|
---|
513 | uint8_t * packet;
|
---|
514 | hci_con_handle_t con_handle;
|
---|
515 | hci_connection_t *connection;
|
---|
516 |
|
---|
517 | // log_info("hci_send_acl_packet_buffer size %u", size);
|
---|
518 |
|
---|
519 | if (!hci_stack->hci_packet_buffer_reserved) {
|
---|
520 | log_error("hci_send_acl_packet_buffer called without reserving packet buffer");
|
---|
521 | return 0;
|
---|
522 | }
|
---|
523 |
|
---|
524 | packet = hci_stack->hci_packet_buffer;
|
---|
525 | con_handle = READ_ACL_CONNECTION_HANDLE(packet);
|
---|
526 |
|
---|
527 | // check for free places on Bluetooth module
|
---|
528 | if (!hci_can_send_prepared_acl_packet_now(con_handle)) {
|
---|
529 | log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller");
|
---|
530 | hci_release_packet_buffer();
|
---|
531 | return BTSTACK_ACL_BUFFERS_FULL;
|
---|
532 | }
|
---|
533 |
|
---|
534 | connection = hci_connection_for_handle( con_handle);
|
---|
535 | if (!connection) {
|
---|
536 | log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle);
|
---|
537 | hci_release_packet_buffer();
|
---|
538 | return 0;
|
---|
539 | }
|
---|
540 | hci_connection_timestamp(connection);
|
---|
541 |
|
---|
542 | // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size);
|
---|
543 |
|
---|
544 | // setup data
|
---|
545 | hci_stack->acl_fragmentation_total_size = size;
|
---|
546 | hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet
|
---|
547 |
|
---|
548 | return hci_send_acl_packet_fragments(connection);
|
---|
549 | }
|
---|
550 |
|
---|
551 | static void acl_handler(uint8_t *packet, int size){
|
---|
552 |
|
---|
553 | // log_info("acl_handler: size %u", size);
|
---|
554 |
|
---|
555 | // get info
|
---|
556 | hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet);
|
---|
557 | hci_connection_t *conn = hci_connection_for_handle(con_handle);
|
---|
558 | uint8_t acl_flags = READ_ACL_FLAGS(packet);
|
---|
559 | uint16_t acl_length = READ_ACL_LENGTH(packet);
|
---|
560 |
|
---|
561 | // ignore non-registered handle
|
---|
562 | if (!conn){
|
---|
563 | log_error( "hci.c: acl_handler called with non-registered handle %u!" , con_handle);
|
---|
564 | return;
|
---|
565 | }
|
---|
566 |
|
---|
567 | // assert packet is complete
|
---|
568 | if (acl_length + 4 != size){
|
---|
569 | log_error("hci.c: acl_handler called with ACL packet of wrong size %u, expected %u => dropping packet", size, acl_length + 4);
|
---|
570 | return;
|
---|
571 | }
|
---|
572 |
|
---|
573 | // update idle timestamp
|
---|
574 | hci_connection_timestamp(conn);
|
---|
575 |
|
---|
576 | // handle different packet types
|
---|
577 | switch (acl_flags & 0x03) {
|
---|
578 |
|
---|
579 | case 0x01: // continuation fragment
|
---|
580 |
|
---|
581 | // sanity checks
|
---|
582 | if (conn->acl_recombination_pos == 0) {
|
---|
583 | log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle);
|
---|
584 | return;
|
---|
585 | }
|
---|
586 | if (conn->acl_recombination_pos + acl_length > 4 + HCI_ACL_BUFFER_SIZE){
|
---|
587 | log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x",
|
---|
588 | conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle);
|
---|
589 | conn->acl_recombination_pos = 0;
|
---|
590 | return;
|
---|
591 | }
|
---|
592 |
|
---|
593 | // append fragment payload (header already stored)
|
---|
594 | memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], &packet[4], acl_length );
|
---|
595 | conn->acl_recombination_pos += acl_length;
|
---|
596 |
|
---|
597 | // log_error( "ACL Cont Fragment: acl_len %u, combined_len %u, l2cap_len %u", acl_length,
|
---|
598 | // conn->acl_recombination_pos, conn->acl_recombination_length);
|
---|
599 |
|
---|
600 | // forward complete L2CAP packet if complete.
|
---|
601 | if (conn->acl_recombination_pos >= conn->acl_recombination_length + 4 + 4){ // pos already incl. ACL header
|
---|
602 |
|
---|
603 | hci_stack->packet_handler(HCI_ACL_DATA_PACKET, &conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos);
|
---|
604 | // reset recombination buffer
|
---|
605 | conn->acl_recombination_length = 0;
|
---|
606 | conn->acl_recombination_pos = 0;
|
---|
607 | }
|
---|
608 | break;
|
---|
609 |
|
---|
610 | case 0x02: { // first fragment
|
---|
611 | uint16_t l2cap_length;
|
---|
612 |
|
---|
613 | // sanity check
|
---|
614 | if (conn->acl_recombination_pos) {
|
---|
615 | log_error( "ACL First Fragment but data in buffer for handle 0x%02x, dropping stale fragments", con_handle);
|
---|
616 | conn->acl_recombination_pos = 0;
|
---|
617 | }
|
---|
618 |
|
---|
619 | // peek into L2CAP packet!
|
---|
620 | l2cap_length = READ_L2CAP_LENGTH( packet );
|
---|
621 |
|
---|
622 | // log_info( "ACL First Fragment: acl_len %u, l2cap_len %u", acl_length, l2cap_length);
|
---|
623 |
|
---|
624 | // compare fragment size to L2CAP packet size
|
---|
625 | if (acl_length >= l2cap_length + 4){
|
---|
626 |
|
---|
627 | // forward fragment as L2CAP packet
|
---|
628 | hci_stack->packet_handler(HCI_ACL_DATA_PACKET, packet, acl_length + 4);
|
---|
629 |
|
---|
630 | } else {
|
---|
631 |
|
---|
632 | if (acl_length > HCI_ACL_BUFFER_SIZE){
|
---|
633 | log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x",
|
---|
634 | 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle);
|
---|
635 | return;
|
---|
636 | }
|
---|
637 |
|
---|
638 | // store first fragment and tweak acl length for complete package
|
---|
639 | memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], packet, acl_length + 4);
|
---|
640 | conn->acl_recombination_pos = acl_length + 4;
|
---|
641 | conn->acl_recombination_length = l2cap_length;
|
---|
642 | little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2, l2cap_length +4);
|
---|
643 | }
|
---|
644 | break;
|
---|
645 |
|
---|
646 | }
|
---|
647 | default:
|
---|
648 | log_error( "hci.c: acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03);
|
---|
649 | return;
|
---|
650 | }
|
---|
651 |
|
---|
652 | // execute main loop
|
---|
653 | hci_run();
|
---|
654 | }
|
---|
655 |
|
---|
656 | static void hci_shutdown_connection(hci_connection_t *conn){
|
---|
657 | log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address));
|
---|
658 |
|
---|
659 | run_loop_remove_timer(&conn->timeout);
|
---|
660 |
|
---|
661 | linked_list_remove(&hci_stack->connections, (linked_item_t *) conn);
|
---|
662 | btstack_memory_hci_connection_free( conn );
|
---|
663 |
|
---|
664 | // now it's gone
|
---|
665 | hci_emit_nr_connections_changed();
|
---|
666 | }
|
---|
667 |
|
---|
668 | static const uint16_t packet_type_sizes[] = {
|
---|
669 | 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE,
|
---|
670 | HCI_ACL_DH1_SIZE, 0, 0, 0,
|
---|
671 | HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE,
|
---|
672 | HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE
|
---|
673 | };
|
---|
674 | static const uint8_t packet_type_feature_requirement_bit[] = {
|
---|
675 | 0, // 3 slot packets
|
---|
676 | 1, // 5 slot packets
|
---|
677 | 25, // EDR 2 mpbs
|
---|
678 | 26, // EDR 3 mbps
|
---|
679 | 39, // 3 slot EDR packts
|
---|
680 | 40, // 5 slot EDR packet
|
---|
681 | };
|
---|
682 | static const uint16_t packet_type_feature_packet_mask[] = {
|
---|
683 | 0x0f00, // 3 slot packets
|
---|
684 | 0xf000, // 5 slot packets
|
---|
685 | 0x1102, // EDR 2 mpbs
|
---|
686 | 0x2204, // EDR 3 mbps
|
---|
687 | 0x0300, // 3 slot EDR packts
|
---|
688 | 0x3000, // 5 slot EDR packet
|
---|
689 | };
|
---|
690 |
|
---|
691 | static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){
|
---|
692 | // enable packet types based on size
|
---|
693 | uint16_t packet_types = 0;
|
---|
694 | unsigned int i;
|
---|
695 | for (i=0;i<16;i++){
|
---|
696 | if (packet_type_sizes[i] == 0) continue;
|
---|
697 | if (packet_type_sizes[i] <= buffer_size){
|
---|
698 | packet_types |= 1 << i;
|
---|
699 | }
|
---|
700 | }
|
---|
701 | // disable packet types due to missing local supported features
|
---|
702 | for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){
|
---|
703 | int bit_idx = packet_type_feature_requirement_bit[i];
|
---|
704 | int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0;
|
---|
705 | if (feature_set) continue;
|
---|
706 | log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]);
|
---|
707 | packet_types &= ~packet_type_feature_packet_mask[i];
|
---|
708 | }
|
---|
709 | // flip bits for "may not be used"
|
---|
710 | packet_types ^= 0x3306;
|
---|
711 | return packet_types;
|
---|
712 | }
|
---|
713 |
|
---|
714 | uint16_t hci_usable_acl_packet_types(void){
|
---|
715 | return hci_stack->packet_types;
|
---|
716 | }
|
---|
717 |
|
---|
718 | uint8_t* hci_get_outgoing_packet_buffer(void){
|
---|
719 | // hci packet buffer is >= acl data packet length
|
---|
720 | return hci_stack->hci_packet_buffer;
|
---|
721 | }
|
---|
722 |
|
---|
723 | uint16_t hci_max_acl_data_packet_length(void){
|
---|
724 | return hci_stack->acl_data_packet_length;
|
---|
725 | }
|
---|
726 |
|
---|
727 | int hci_non_flushable_packet_boundary_flag_supported(void){
|
---|
728 | // No. 54, byte 6, bit 6
|
---|
729 | return (hci_stack->local_supported_features[6] & (1 << 6)) != 0;
|
---|
730 | }
|
---|
731 |
|
---|
732 | int hci_ssp_supported(void){
|
---|
733 | // No. 51, byte 6, bit 3
|
---|
734 | return (hci_stack->local_supported_features[6] & (1 << 3)) != 0;
|
---|
735 | }
|
---|
736 |
|
---|
737 | int hci_classic_supported(void){
|
---|
738 | // No. 37, byte 4, bit 5, = No BR/EDR Support
|
---|
739 | return (hci_stack->local_supported_features[4] & (1 << 5)) == 0;
|
---|
740 | }
|
---|
741 |
|
---|
742 | int hci_le_supported(void){
|
---|
743 | #ifdef HAVE_BLE
|
---|
744 | // No. 37, byte 4, bit 6 = LE Supported (Controller)
|
---|
745 | return (hci_stack->local_supported_features[4] & (1 << 6)) != 0;
|
---|
746 | #else
|
---|
747 | return 0;
|
---|
748 | #endif
|
---|
749 | }
|
---|
750 |
|
---|
751 | // get addr type and address used in advertisement packets
|
---|
752 | void hci_le_advertisement_address(uint8_t * addr_type, bd_addr_t * addr){
|
---|
753 | *addr_type = hci_stack->adv_addr_type;
|
---|
754 | if (hci_stack->adv_addr_type){
|
---|
755 | memcpy(addr, hci_stack->adv_address, 6);
|
---|
756 | } else {
|
---|
757 | memcpy(addr, hci_stack->local_bd_addr, 6);
|
---|
758 | }
|
---|
759 | }
|
---|
760 |
|
---|
761 | #ifdef HAVE_BLE
|
---|
762 | void le_handle_advertisement_report(uint8_t *packet, int size){
|
---|
763 | int offset = 3;
|
---|
764 | int num_reports = packet[offset];
|
---|
765 | offset += 1;
|
---|
766 |
|
---|
767 | int i;
|
---|
768 | log_info("HCI: handle adv report with num reports: %d", num_reports);
|
---|
769 | for (i=0; i<num_reports;i++){
|
---|
770 | uint8_t data_length = packet[offset + 8];
|
---|
771 | uint8_t event_size = 10 + data_length;
|
---|
772 | uint8_t event[2 + event_size ];
|
---|
773 | int pos = 0;
|
---|
774 | event[pos++] = GAP_LE_ADVERTISING_REPORT;
|
---|
775 | event[pos++] = event_size;
|
---|
776 | memcpy(&event[pos], &packet[offset], 1+1+6); // event type + address type + address
|
---|
777 | offset += 8;
|
---|
778 | pos += 8;
|
---|
779 | event[pos++] = packet[offset + 1 + data_length]; // rssi
|
---|
780 | event[pos++] = packet[offset++]; //data_length;
|
---|
781 | memcpy(&event[pos], &packet[offset], data_length);
|
---|
782 | pos += data_length;
|
---|
783 | offset += data_length + 1; // rssi
|
---|
784 | hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
785 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
786 | }
|
---|
787 | }
|
---|
788 | #endif
|
---|
789 |
|
---|
790 | static void hci_initializing_event_handler(uint8_t * packet, uint16_t size){
|
---|
791 | uint8_t command_completed = 0;
|
---|
792 | if ((hci_stack->substate % 2) == 0) return;
|
---|
793 | // odd: waiting for event
|
---|
794 | if (packet[0] == HCI_EVENT_COMMAND_COMPLETE){
|
---|
795 | uint16_t opcode = little_endian_read_16(packet,3);
|
---|
796 | if (opcode == hci_stack->last_cmd_opcode){
|
---|
797 | command_completed = 1;
|
---|
798 | log_info("Command complete for expected opcode %04x -> new substate %u", opcode, hci_stack->substate);
|
---|
799 | } else {
|
---|
800 | log_info("Command complete for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode);
|
---|
801 | }
|
---|
802 | }
|
---|
803 | if (packet[0] == HCI_EVENT_COMMAND_STATUS){
|
---|
804 | uint8_t status = packet[2];
|
---|
805 | uint16_t opcode = little_endian_read_16(packet,4);
|
---|
806 | if (opcode == hci_stack->last_cmd_opcode){
|
---|
807 | if (status){
|
---|
808 | command_completed = 1;
|
---|
809 | log_error("Command status error 0x%02x for expected opcode %04x -> new substate %u", status, opcode, hci_stack->substate);
|
---|
810 | } else {
|
---|
811 | log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode);
|
---|
812 | }
|
---|
813 | } else {
|
---|
814 | log_info("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode);
|
---|
815 | }
|
---|
816 | }
|
---|
817 |
|
---|
818 | if (!command_completed) return;
|
---|
819 |
|
---|
820 | switch(hci_stack->substate >> 1){
|
---|
821 | default:
|
---|
822 | hci_stack->substate++;
|
---|
823 | break;
|
---|
824 | }
|
---|
825 | }
|
---|
826 |
|
---|
827 | static void hci_initializing_state_machine(){
|
---|
828 | // log_info("hci_init: substate %u", hci_stack->substate);
|
---|
829 | if (hci_stack->substate % 2) {
|
---|
830 | // odd: waiting for command completion
|
---|
831 | return;
|
---|
832 | }
|
---|
833 | switch (hci_stack->substate >> 1){
|
---|
834 | case 0: // RESET
|
---|
835 | hci_state_reset();
|
---|
836 |
|
---|
837 | hci_send_cmd(&hci_reset);
|
---|
838 | if (hci_stack->config == NULL || ((hci_uart_config_t *)hci_stack->config)->baudrate_main == 0){
|
---|
839 | // skip baud change
|
---|
840 | hci_stack->substate = 4; // >> 1 = 2
|
---|
841 | }
|
---|
842 | break;
|
---|
843 | case 1: // SEND BAUD CHANGE
|
---|
844 | hci_stack->control->baudrate_cmd(hci_stack->config, ((hci_uart_config_t *)hci_stack->config)->baudrate_main, hci_stack->hci_packet_buffer);
|
---|
845 | hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0);
|
---|
846 | hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, 3 + hci_stack->hci_packet_buffer[2]);
|
---|
847 | hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3 + hci_stack->hci_packet_buffer[2]);
|
---|
848 | break;
|
---|
849 | case 2: // LOCAL BAUD CHANGE
|
---|
850 | log_info("Local baud rate change");
|
---|
851 | hci_stack->hci_transport->set_baudrate(((hci_uart_config_t *)hci_stack->config)->baudrate_main);
|
---|
852 | hci_stack->substate += 2;
|
---|
853 | // break missing here for fall through
|
---|
854 |
|
---|
855 | case 3:
|
---|
856 | log_info("Custom init");
|
---|
857 | // Custom initialization
|
---|
858 | if (hci_stack->control && hci_stack->control->next_cmd){
|
---|
859 | int valid_cmd = (*hci_stack->control->next_cmd)(hci_stack->config, hci_stack->hci_packet_buffer);
|
---|
860 | if (valid_cmd){
|
---|
861 | int size = 3 + hci_stack->hci_packet_buffer[2];
|
---|
862 | hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0);
|
---|
863 | hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size);
|
---|
864 | hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size);
|
---|
865 | hci_stack->substate = 4; // more init commands
|
---|
866 | break;
|
---|
867 | }
|
---|
868 | log_info("hci_run: init script done");
|
---|
869 | }
|
---|
870 | // otherwise continue
|
---|
871 | hci_send_cmd(&hci_read_bd_addr);
|
---|
872 | break;
|
---|
873 | case 4:
|
---|
874 | hci_send_cmd(&hci_read_buffer_size);
|
---|
875 | break;
|
---|
876 | case 5:
|
---|
877 | hci_send_cmd(&hci_read_local_supported_features);
|
---|
878 | break;
|
---|
879 | case 6:
|
---|
880 | if (hci_le_supported()){
|
---|
881 | hci_send_cmd(&hci_set_event_mask,0xffffffff, 0x3FFFFFFF);
|
---|
882 | } else {
|
---|
883 | // Kensington Bluetoot 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff...
|
---|
884 | hci_send_cmd(&hci_set_event_mask,0xffffffff, 0x1FFFFFFF);
|
---|
885 | }
|
---|
886 |
|
---|
887 | // skip Classic init commands for LE only chipsets
|
---|
888 | if (!hci_classic_supported()){
|
---|
889 | if (hci_le_supported()){
|
---|
890 | hci_stack->substate = 11 << 1; // skip all classic command
|
---|
891 | } else {
|
---|
892 | log_error("Neither BR/EDR nor LE supported");
|
---|
893 | hci_stack->substate = 14 << 1; // skip all
|
---|
894 | }
|
---|
895 | }
|
---|
896 | break;
|
---|
897 | case 7:
|
---|
898 | if (hci_ssp_supported()){
|
---|
899 | hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable);
|
---|
900 | break;
|
---|
901 | }
|
---|
902 | hci_stack->substate += 2;
|
---|
903 | // break missing here for fall through
|
---|
904 |
|
---|
905 | case 8:
|
---|
906 | // ca. 15 sec
|
---|
907 | hci_send_cmd(&hci_write_page_timeout, 0x6000);
|
---|
908 | break;
|
---|
909 | case 9:
|
---|
910 | hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device);
|
---|
911 | break;
|
---|
912 | case 10:
|
---|
913 | if (hci_stack->local_name){
|
---|
914 | hci_send_cmd(&hci_write_local_name, hci_stack->local_name);
|
---|
915 | } else {
|
---|
916 | char hostname[30];
|
---|
917 | #ifdef EMBEDDED
|
---|
918 | // BTstack-11:22:33:44:55:66
|
---|
919 | strlcpy(hostname, "BTstack ", sizeof(hostname));
|
---|
920 | strlcat(hostname, bd_addr_to_str(hci_stack->local_bd_addr), sizeof(hostname));
|
---|
921 | log_info("---> Name %s", hostname);
|
---|
922 | #else
|
---|
923 | // hostname for POSIX systems
|
---|
924 | gethostname(hostname, 30);
|
---|
925 | hostname[29] = '\0';
|
---|
926 | #endif
|
---|
927 | hci_send_cmd(&hci_write_local_name, hostname);
|
---|
928 | }
|
---|
929 | break;
|
---|
930 | case 11:
|
---|
931 | hci_send_cmd(&hci_write_scan_enable, (hci_stack->connectable << 1) | hci_stack->discoverable); // page scan
|
---|
932 | if (!hci_le_supported()){
|
---|
933 | // SKIP LE init for Classic only configuration
|
---|
934 | hci_stack->substate = 14 << 1;
|
---|
935 | }
|
---|
936 | break;
|
---|
937 |
|
---|
938 | #ifdef HAVE_BLE
|
---|
939 | // LE INIT
|
---|
940 | case 12:
|
---|
941 | hci_send_cmd(&hci_le_read_buffer_size);
|
---|
942 | break;
|
---|
943 | case 13:
|
---|
944 | // LE Supported Host = 1, Simultaneous Host = 0
|
---|
945 | hci_send_cmd(&hci_write_le_host_supported, 1, 0);
|
---|
946 | break;
|
---|
947 | case 14:
|
---|
948 | // LE Scan Parameters: active scanning, 300 ms interval, 30 ms window, public address, accept all advs
|
---|
949 | hci_send_cmd(&hci_le_set_scan_parameters, 1, 0x1e0, 0x30, 0, 0);
|
---|
950 | break;
|
---|
951 | #endif
|
---|
952 |
|
---|
953 | // DONE
|
---|
954 | case 15:
|
---|
955 | // done.
|
---|
956 | hci_stack->state = HCI_STATE_WORKING;
|
---|
957 | hci_emit_state();
|
---|
958 | break;
|
---|
959 | default:
|
---|
960 | break;
|
---|
961 | }
|
---|
962 | hci_stack->substate++;
|
---|
963 | }
|
---|
964 |
|
---|
965 | // avoid huge local variables
|
---|
966 | #ifndef EMBEDDED
|
---|
967 | static device_name_t device_name;
|
---|
968 | #endif
|
---|
969 | static void event_handler(uint8_t *packet, int size){
|
---|
970 |
|
---|
971 | uint16_t event_length = packet[1];
|
---|
972 | bd_addr_t addr;
|
---|
973 | bd_addr_type_t addr_type;
|
---|
974 | uint8_t link_type;
|
---|
975 | hci_con_handle_t handle;
|
---|
976 | hci_connection_t * conn;
|
---|
977 | int i;
|
---|
978 |
|
---|
979 | // assert packet is complete
|
---|
980 | if (size != event_length + 2){
|
---|
981 | log_error("hci.c: event_handler called with event packet of wrong size %u, expected %u => dropping packet", size, event_length + 2);
|
---|
982 | return;
|
---|
983 | }
|
---|
984 |
|
---|
985 | /**/ log_info("HCI:EVENT:%02x", packet[0]);
|
---|
986 |
|
---|
987 | switch (packet[0]) {
|
---|
988 |
|
---|
989 | case HCI_EVENT_COMMAND_COMPLETE:
|
---|
990 | // get num cmd packets
|
---|
991 | // log_info("HCI_EVENT_COMMAND_COMPLETE cmds old %u - new %u", hci_stack->num_cmd_packets, packet[2]);
|
---|
992 | hci_stack->num_cmd_packets = packet[2];
|
---|
993 |
|
---|
994 | if (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_read_buffer_size)){
|
---|
995 | // from offset 5
|
---|
996 | // status
|
---|
997 | // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets"
|
---|
998 | hci_stack->acl_data_packet_length = little_endian_read_16(packet, 6);
|
---|
999 | // ignore: SCO data packet len (8)
|
---|
1000 | hci_stack->acl_packets_total_num = packet[9];
|
---|
1001 | // ignore: total num SCO packets
|
---|
1002 | if (hci_stack->state == HCI_STATE_INITIALIZING){
|
---|
1003 | // determine usable ACL payload size
|
---|
1004 | if (HCI_ACL_PAYLOAD_SIZE < hci_stack->acl_data_packet_length){
|
---|
1005 | hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE;
|
---|
1006 | }
|
---|
1007 | log_info("hci_read_buffer_size: used size %u, count %u",
|
---|
1008 | hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num);
|
---|
1009 | }
|
---|
1010 | }
|
---|
1011 | #ifdef HAVE_BLE
|
---|
1012 | if (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_le_read_buffer_size)){
|
---|
1013 | hci_stack->le_data_packets_length = little_endian_read_16(packet, 6);
|
---|
1014 | hci_stack->le_acl_packets_total_num = packet[8];
|
---|
1015 | // determine usable ACL payload size
|
---|
1016 | if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){
|
---|
1017 | hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE;
|
---|
1018 | }
|
---|
1019 | log_info("hci_le_read_buffer_size: size %u, count %u", hci_stack->le_data_packets_length, hci_stack->le_acl_packets_total_num);
|
---|
1020 | }
|
---|
1021 | #endif
|
---|
1022 | // Dump local address
|
---|
1023 | if (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_read_bd_addr)) {
|
---|
1024 | reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr);
|
---|
1025 | log_info("Local Address, Status: 0x%02x: Addr: %s",
|
---|
1026 | packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack->local_bd_addr));
|
---|
1027 | }
|
---|
1028 | if (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_write_scan_enable)){
|
---|
1029 | hci_emit_discoverable_enabled(hci_stack->discoverable);
|
---|
1030 | }
|
---|
1031 | // Note: HCI init checks
|
---|
1032 | if (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_read_local_supported_features)){
|
---|
1033 | memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 8);
|
---|
1034 | log_info("Local Supported Features: 0x%02x%02x%02x%02x%02x%02x%02x%02x",
|
---|
1035 | hci_stack->local_supported_features[0], hci_stack->local_supported_features[1],
|
---|
1036 | hci_stack->local_supported_features[2], hci_stack->local_supported_features[3],
|
---|
1037 | hci_stack->local_supported_features[4], hci_stack->local_supported_features[5],
|
---|
1038 | hci_stack->local_supported_features[6], hci_stack->local_supported_features[7]);
|
---|
1039 |
|
---|
1040 | // determine usable ACL packet types based on host buffer size and supported features
|
---|
1041 | hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]);
|
---|
1042 | log_info("packet types %04x", hci_stack->packet_types);
|
---|
1043 |
|
---|
1044 | // Classic/LE
|
---|
1045 | log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported());
|
---|
1046 | }
|
---|
1047 | break;
|
---|
1048 |
|
---|
1049 | case HCI_EVENT_COMMAND_STATUS:
|
---|
1050 | // get num cmd packets
|
---|
1051 | // log_info("HCI_EVENT_COMMAND_STATUS cmds - old %u - new %u", hci_stack->num_cmd_packets, packet[3]);
|
---|
1052 | hci_stack->num_cmd_packets = packet[3];
|
---|
1053 | break;
|
---|
1054 |
|
---|
1055 | case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{
|
---|
1056 | int offset = 3;
|
---|
1057 | for (i=0; i<packet[2];i++){
|
---|
1058 | uint16_t num_packets;
|
---|
1059 | handle = little_endian_read_16(packet, offset);
|
---|
1060 | offset += 2;
|
---|
1061 | num_packets = little_endian_read_16(packet, offset);
|
---|
1062 | offset += 2;
|
---|
1063 |
|
---|
1064 | conn = hci_connection_for_handle(handle);
|
---|
1065 | if (!conn){
|
---|
1066 | log_error("hci_number_completed_packet lists unused con handle %u", handle);
|
---|
1067 | continue;
|
---|
1068 | }
|
---|
1069 |
|
---|
1070 | if (conn->num_acl_packets_sent >= num_packets){
|
---|
1071 | conn->num_acl_packets_sent -= num_packets;
|
---|
1072 | } else {
|
---|
1073 | log_error("hci_number_completed_packets, more slots freed then sent.");
|
---|
1074 | conn->num_acl_packets_sent = 0;
|
---|
1075 | }
|
---|
1076 | // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_acl_packets_sent);
|
---|
1077 | }
|
---|
1078 | break;
|
---|
1079 | }
|
---|
1080 | case HCI_EVENT_CONNECTION_REQUEST:
|
---|
1081 | reverse_bd_addr(&packet[2], addr);
|
---|
1082 | // TODO: eval COD 8-10
|
---|
1083 | link_type = packet[11];
|
---|
1084 | log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), link_type);
|
---|
1085 | if (link_type == 1) { // ACL
|
---|
1086 | conn = hci_connection_for_bd_addr_and_type(&addr, BD_ADDR_TYPE_CLASSIC);
|
---|
1087 | if (!conn) {
|
---|
1088 | conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_CLASSIC);
|
---|
1089 | }
|
---|
1090 | if (!conn) {
|
---|
1091 | // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D)
|
---|
1092 | hci_stack->decline_reason = 0x0d;
|
---|
1093 | BD_ADDR_COPY(hci_stack->decline_addr, addr);
|
---|
1094 | break;
|
---|
1095 | }
|
---|
1096 | conn->role = HCI_ROLE_SLAVE;
|
---|
1097 | conn->state = RECEIVED_CONNECTION_REQUEST;
|
---|
1098 | hci_run();
|
---|
1099 | } else {
|
---|
1100 | // SYNCHRONOUS CONNECTION LIMIT TO A DEVICE EXCEEDED (0X0A)
|
---|
1101 | hci_stack->decline_reason = 0x0a;
|
---|
1102 | BD_ADDR_COPY(hci_stack->decline_addr, addr);
|
---|
1103 | }
|
---|
1104 | break;
|
---|
1105 |
|
---|
1106 | case HCI_EVENT_CONNECTION_COMPLETE:
|
---|
1107 | // Connection management
|
---|
1108 | reverse_bd_addr(&packet[5], addr);
|
---|
1109 | log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr));
|
---|
1110 | addr_type = BD_ADDR_TYPE_CLASSIC;
|
---|
1111 | conn = hci_connection_for_bd_addr_and_type(&addr, addr_type);
|
---|
1112 | if (conn) {
|
---|
1113 | if (!packet[2]){
|
---|
1114 | conn->state = OPEN;
|
---|
1115 | conn->con_handle = little_endian_read_16(packet, 3);
|
---|
1116 | conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES;
|
---|
1117 |
|
---|
1118 | // restart timer
|
---|
1119 | run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS);
|
---|
1120 | run_loop_add_timer(&conn->timeout);
|
---|
1121 |
|
---|
1122 | log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address));
|
---|
1123 |
|
---|
1124 | hci_emit_nr_connections_changed();
|
---|
1125 | } else {
|
---|
1126 | int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED;
|
---|
1127 | uint8_t status = packet[2];
|
---|
1128 | bd_addr_t bd_address;
|
---|
1129 | memcpy(&bd_address, conn->address, 6);
|
---|
1130 |
|
---|
1131 | // connection failed, remove entry
|
---|
1132 | linked_list_remove(&hci_stack->connections, (linked_item_t *) conn);
|
---|
1133 | btstack_memory_hci_connection_free( conn );
|
---|
1134 |
|
---|
1135 | // notify client if dedicated bonding
|
---|
1136 | if (notify_dedicated_bonding_failed){
|
---|
1137 | log_info("hci notify_dedicated_bonding_failed");
|
---|
1138 | hci_emit_dedicated_bonding_result(bd_address, status);
|
---|
1139 | }
|
---|
1140 |
|
---|
1141 | // if authentication error, also delete link key
|
---|
1142 | if (packet[2] == 0x05) {
|
---|
1143 | hci_drop_link_key_for_bd_addr(&addr);
|
---|
1144 | }
|
---|
1145 | }
|
---|
1146 | }
|
---|
1147 | break;
|
---|
1148 |
|
---|
1149 | case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE:
|
---|
1150 | handle = little_endian_read_16(packet, 3);
|
---|
1151 | conn = hci_connection_for_handle(handle);
|
---|
1152 | if (!conn) break;
|
---|
1153 | if (!packet[2]){
|
---|
1154 | uint8_t * features = &packet[5];
|
---|
1155 | if (features[6] & (1 << 3)){
|
---|
1156 | conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP;
|
---|
1157 | }
|
---|
1158 | }
|
---|
1159 | conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES;
|
---|
1160 | log_info("HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE, bonding flags %x", conn->bonding_flags);
|
---|
1161 | if (conn->bonding_flags & BONDING_DEDICATED){
|
---|
1162 | conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST;
|
---|
1163 | }
|
---|
1164 | break;
|
---|
1165 |
|
---|
1166 | case HCI_EVENT_LINK_KEY_REQUEST:
|
---|
1167 | log_info("HCI_EVENT_LINK_KEY_REQUEST");
|
---|
1168 | hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_REQUEST);
|
---|
1169 | // non-bondable mode: link key negative reply will be sent by HANDLE_LINK_KEY_REQUEST
|
---|
1170 | if (hci_stack->bondable && !hci_stack->remote_device_db) break;
|
---|
1171 | hci_add_connection_flags_for_flipped_bd_addr(&packet[2], HANDLE_LINK_KEY_REQUEST);
|
---|
1172 | hci_run();
|
---|
1173 | // request handled by hci_run() as HANDLE_LINK_KEY_REQUEST gets set
|
---|
1174 | return;
|
---|
1175 |
|
---|
1176 | case HCI_EVENT_LINK_KEY_NOTIFICATION: {
|
---|
1177 | link_key_type_t link_key_type;
|
---|
1178 | reverse_bd_addr(&packet[2], addr);
|
---|
1179 | conn = hci_connection_for_bd_addr_and_type(&addr, BD_ADDR_TYPE_CLASSIC);
|
---|
1180 | if (!conn) break;
|
---|
1181 | conn->authentication_flags |= RECV_LINK_KEY_NOTIFICATION;
|
---|
1182 | link_key_type = (link_key_type_t)packet[24];
|
---|
1183 | // Change Connection Encryption keeps link key type
|
---|
1184 | if (link_key_type != CHANGED_COMBINATION_KEY){
|
---|
1185 | conn->link_key_type = link_key_type;
|
---|
1186 | }
|
---|
1187 | if (!hci_stack->remote_device_db) break;
|
---|
1188 | hci_stack->remote_device_db->put_link_key(&addr, (link_key_t *) &packet[8], conn->link_key_type);
|
---|
1189 | // still forward event to allow dismiss of pairing dialog
|
---|
1190 | break;
|
---|
1191 | }
|
---|
1192 |
|
---|
1193 | case HCI_EVENT_PIN_CODE_REQUEST:
|
---|
1194 | hci_add_connection_flags_for_flipped_bd_addr(&packet[2], LEGACY_PAIRING_ACTIVE);
|
---|
1195 | // non-bondable mode: pin code negative reply will be sent
|
---|
1196 | if (!hci_stack->bondable){
|
---|
1197 | hci_add_connection_flags_for_flipped_bd_addr(&packet[2], DENY_PIN_CODE_REQUEST);
|
---|
1198 | hci_run();
|
---|
1199 | return;
|
---|
1200 | }
|
---|
1201 | // PIN CODE REQUEST means the link key request didn't succee -> delete stored link key
|
---|
1202 | if (!hci_stack->remote_device_db) break;
|
---|
1203 | reverse_bd_addr(&packet[2], addr);
|
---|
1204 | hci_stack->remote_device_db->delete_link_key(&addr);
|
---|
1205 | break;
|
---|
1206 |
|
---|
1207 | case HCI_EVENT_IO_CAPABILITY_REQUEST:
|
---|
1208 | hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_IO_CAPABILITIES_REQUEST);
|
---|
1209 | hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_IO_CAPABILITIES_REPLY);
|
---|
1210 | break;
|
---|
1211 |
|
---|
1212 | case HCI_EVENT_USER_CONFIRMATION_REQUEST:
|
---|
1213 | hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SSP_PAIRING_ACTIVE);
|
---|
1214 | if (!hci_stack->ssp_auto_accept) break;
|
---|
1215 | hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_USER_CONFIRM_REPLY);
|
---|
1216 | break;
|
---|
1217 |
|
---|
1218 | case HCI_EVENT_USER_PASSKEY_REQUEST:
|
---|
1219 | hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SSP_PAIRING_ACTIVE);
|
---|
1220 | if (!hci_stack->ssp_auto_accept) break;
|
---|
1221 | hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_USER_PASSKEY_REPLY);
|
---|
1222 | break;
|
---|
1223 |
|
---|
1224 | case HCI_EVENT_ENCRYPTION_CHANGE:
|
---|
1225 | handle = little_endian_read_16(packet, 3);
|
---|
1226 | conn = hci_connection_for_handle(handle);
|
---|
1227 | if (!conn) break;
|
---|
1228 | if (packet[2] == 0) {
|
---|
1229 | if (packet[5]){
|
---|
1230 | conn->authentication_flags |= CONNECTION_ENCRYPTED;
|
---|
1231 | } else {
|
---|
1232 | conn->authentication_flags &= ~CONNECTION_ENCRYPTED;
|
---|
1233 | }
|
---|
1234 | }
|
---|
1235 | hci_emit_security_level(handle, gap_security_level_for_connection(conn));
|
---|
1236 | break;
|
---|
1237 |
|
---|
1238 | case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT:
|
---|
1239 | handle = little_endian_read_16(packet, 3);
|
---|
1240 | conn = hci_connection_for_handle(handle);
|
---|
1241 | if (!conn) break;
|
---|
1242 |
|
---|
1243 | // dedicated bonding: send result and disconnect
|
---|
1244 | if (conn->bonding_flags & BONDING_DEDICATED){
|
---|
1245 | conn->bonding_flags &= ~BONDING_DEDICATED;
|
---|
1246 | conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE;
|
---|
1247 | conn->bonding_status = packet[2];
|
---|
1248 | break;
|
---|
1249 | }
|
---|
1250 |
|
---|
1251 | if (packet[2] == 0 && gap_security_level_for_link_key_type(conn->link_key_type) >= conn->requested_security_level){
|
---|
1252 | // link key sufficient for requested security
|
---|
1253 | conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST;
|
---|
1254 | break;
|
---|
1255 | }
|
---|
1256 | // not enough
|
---|
1257 | hci_emit_security_level(handle, gap_security_level_for_connection(conn));
|
---|
1258 | break;
|
---|
1259 |
|
---|
1260 | #ifndef EMBEDDED
|
---|
1261 | case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE:
|
---|
1262 | if (!hci_stack->remote_device_db) break;
|
---|
1263 | if (packet[2]) break; // status not ok
|
---|
1264 | reverse_bd_addr(&packet[3], addr);
|
---|
1265 | // fix for invalid remote names - terminate on 0xff
|
---|
1266 | for (i=0; i<248;i++){
|
---|
1267 | if (packet[9+i] == 0xff){
|
---|
1268 | packet[9+i] = 0;
|
---|
1269 | break;
|
---|
1270 | }
|
---|
1271 | }
|
---|
1272 | memset(&device_name, 0, sizeof(device_name_t));
|
---|
1273 | strncpy((char*) device_name, (char*) &packet[9], 248);
|
---|
1274 | hci_stack->remote_device_db->put_name(&addr, &device_name);
|
---|
1275 | break;
|
---|
1276 |
|
---|
1277 | case HCI_EVENT_INQUIRY_RESULT:
|
---|
1278 | case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI:{
|
---|
1279 | if (!hci_stack->remote_device_db) break;
|
---|
1280 | // first send inq result packet
|
---|
1281 | hci_stack->packet_handler(HCI_EVENT_PACKET, packet, size);
|
---|
1282 | // then send cached remote names
|
---|
1283 | int offset = 3;
|
---|
1284 | for (i=0; i<packet[2];i++){
|
---|
1285 | reverse_bd_addr(&packet[offset], addr);
|
---|
1286 | offset += 14; // 6 + 1 + 1 + 1 + 3 + 2;
|
---|
1287 | if (hci_stack->remote_device_db->get_name(&addr, &device_name)){
|
---|
1288 | hci_emit_remote_name_cached(&addr, &device_name);
|
---|
1289 | }
|
---|
1290 | }
|
---|
1291 | return;
|
---|
1292 | }
|
---|
1293 | #endif
|
---|
1294 |
|
---|
1295 | // HCI_EVENT_DISCONNECTION_COMPLETE
|
---|
1296 | // has been moved down, to first notify stack before shutting connection down
|
---|
1297 |
|
---|
1298 | case HCI_EVENT_HARDWARE_ERROR:
|
---|
1299 | if(hci_stack->control && hci_stack->control->hw_error){
|
---|
1300 | (*hci_stack->control->hw_error)();
|
---|
1301 | } else {
|
---|
1302 | // if no special requests, just reboot stack
|
---|
1303 | hci_power_control_off();
|
---|
1304 | hci_power_control_on();
|
---|
1305 | }
|
---|
1306 | break;
|
---|
1307 |
|
---|
1308 | case HCI_EVENT_ROLE_CHANGE:
|
---|
1309 | if (packet[2]) break; // status != 0
|
---|
1310 | handle = little_endian_read_16(packet, 3);
|
---|
1311 | conn = hci_connection_for_handle(handle);
|
---|
1312 | if (!conn) break; // no conn
|
---|
1313 | conn->role = packet[9];
|
---|
1314 | break;
|
---|
1315 |
|
---|
1316 | case DAEMON_EVENT_HCI_PACKET_SENT:
|
---|
1317 | // release packet buffer only for asynchronous transport and if there are not further fragements
|
---|
1318 | if (hci_transport_synchronous()) break;
|
---|
1319 | if (hci_stack->acl_fragmentation_total_size) break;
|
---|
1320 | hci_release_packet_buffer();
|
---|
1321 | break;
|
---|
1322 |
|
---|
1323 | #ifdef HAVE_BLE
|
---|
1324 | case HCI_EVENT_LE_META:
|
---|
1325 | switch (packet[2]){
|
---|
1326 | case HCI_SUBEVENT_LE_ADVERTISING_REPORT:
|
---|
1327 | log_info("advertising report received");
|
---|
1328 | if (hci_stack->le_scanning_state != LE_SCANNING) break;
|
---|
1329 | le_handle_advertisement_report(packet, size);
|
---|
1330 | break;
|
---|
1331 | case HCI_SUBEVENT_LE_CONNECTION_COMPLETE:
|
---|
1332 | // Connection management
|
---|
1333 | reverse_bd_addr(&packet[8], addr);
|
---|
1334 | addr_type = (bd_addr_type_t)packet[7];
|
---|
1335 | log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr));
|
---|
1336 | // LE connections are auto-accepted, so just create a connection if there isn't one already
|
---|
1337 | conn = hci_connection_for_bd_addr_and_type(&addr, addr_type);
|
---|
1338 | if (packet[3]){
|
---|
1339 | if (conn){
|
---|
1340 | // outgoing connection failed, remove entry
|
---|
1341 | linked_list_remove(&hci_stack->connections, (linked_item_t *) conn);
|
---|
1342 | btstack_memory_hci_connection_free( conn );
|
---|
1343 | }
|
---|
1344 | // if authentication error, also delete link key
|
---|
1345 | if (packet[3] == 0x05) {
|
---|
1346 | hci_drop_link_key_for_bd_addr(&addr);
|
---|
1347 | }
|
---|
1348 | break;
|
---|
1349 | }
|
---|
1350 | if (!conn){
|
---|
1351 | conn = create_connection_for_bd_addr_and_type(addr, addr_type);
|
---|
1352 | }
|
---|
1353 | if (!conn){
|
---|
1354 | // no memory
|
---|
1355 | break;
|
---|
1356 | }
|
---|
1357 |
|
---|
1358 | conn->state = OPEN;
|
---|
1359 | conn->con_handle = little_endian_read_16(packet, 4);
|
---|
1360 |
|
---|
1361 | // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock
|
---|
1362 |
|
---|
1363 | // restart timer
|
---|
1364 | // run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS);
|
---|
1365 | // run_loop_add_timer(&conn->timeout);
|
---|
1366 |
|
---|
1367 | log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address));
|
---|
1368 |
|
---|
1369 | hci_emit_nr_connections_changed();
|
---|
1370 | break;
|
---|
1371 |
|
---|
1372 | // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]);
|
---|
1373 |
|
---|
1374 | default:
|
---|
1375 | break;
|
---|
1376 | }
|
---|
1377 | break;
|
---|
1378 | #endif
|
---|
1379 | default:
|
---|
1380 | break;
|
---|
1381 | }
|
---|
1382 |
|
---|
1383 | // handle BT initialization
|
---|
1384 | if (hci_stack->state == HCI_STATE_INITIALIZING){
|
---|
1385 | hci_initializing_event_handler(packet, size);
|
---|
1386 | }
|
---|
1387 |
|
---|
1388 | // help with BT sleep
|
---|
1389 | if (hci_stack->state == HCI_STATE_FALLING_ASLEEP
|
---|
1390 | && hci_stack->substate == 1
|
---|
1391 | && HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_write_scan_enable)){
|
---|
1392 | hci_stack->substate++;
|
---|
1393 | }
|
---|
1394 |
|
---|
1395 | // notify upper stack
|
---|
1396 | hci_stack->packet_handler(HCI_EVENT_PACKET, packet, size);
|
---|
1397 |
|
---|
1398 | // moved here to give upper stack a chance to close down everything with hci_connection_t intact
|
---|
1399 | if (packet[0] == HCI_EVENT_DISCONNECTION_COMPLETE){
|
---|
1400 | if (!packet[2]){
|
---|
1401 | hci_connection_t * conn;
|
---|
1402 | handle = little_endian_read_16(packet, 3);
|
---|
1403 | conn = hci_connection_for_handle(handle);
|
---|
1404 | if (conn) {
|
---|
1405 | uint8_t status = conn->bonding_status;
|
---|
1406 | uint16_t flags = conn->bonding_flags;
|
---|
1407 | bd_addr_t bd_address;
|
---|
1408 | memcpy(&bd_address, conn->address, 6);
|
---|
1409 | hci_shutdown_connection(conn);
|
---|
1410 | // connection struct is gone, don't access anymore
|
---|
1411 | if (flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){
|
---|
1412 | hci_emit_dedicated_bonding_result(bd_address, status);
|
---|
1413 | }
|
---|
1414 | }
|
---|
1415 | }
|
---|
1416 | }
|
---|
1417 |
|
---|
1418 | // execute main loop
|
---|
1419 | hci_run();
|
---|
1420 | }
|
---|
1421 |
|
---|
1422 | static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){
|
---|
1423 | hci_dump_packet(packet_type, 1, packet, size);
|
---|
1424 | switch (packet_type) {
|
---|
1425 | case HCI_EVENT_PACKET:
|
---|
1426 | event_handler(packet, size);
|
---|
1427 | break;
|
---|
1428 | case HCI_ACL_DATA_PACKET:
|
---|
1429 | acl_handler(packet, size);
|
---|
1430 | break;
|
---|
1431 | default:
|
---|
1432 | break;
|
---|
1433 | }
|
---|
1434 | }
|
---|
1435 |
|
---|
1436 | /** Register HCI packet handlers */
|
---|
1437 | void hci_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)){
|
---|
1438 | hci_stack->packet_handler = handler;
|
---|
1439 | }
|
---|
1440 |
|
---|
1441 | static void hci_state_reset(){
|
---|
1442 | // no connections yet
|
---|
1443 | hci_stack->connections = NULL;
|
---|
1444 |
|
---|
1445 | // keep discoverable/connectable as this has been requested by the client(s)
|
---|
1446 | // hci_stack->discoverable = 0;
|
---|
1447 | // hci_stack->connectable = 0;
|
---|
1448 | // hci_stack->bondable = 1;
|
---|
1449 |
|
---|
1450 | // buffer is free
|
---|
1451 | hci_stack->hci_packet_buffer_reserved = 0;
|
---|
1452 |
|
---|
1453 | // no pending cmds
|
---|
1454 | hci_stack->decline_reason = 0;
|
---|
1455 | hci_stack->new_scan_enable_value = 0xff;
|
---|
1456 |
|
---|
1457 | // LE
|
---|
1458 | hci_stack->adv_addr_type = 0;
|
---|
1459 | memset(hci_stack->adv_address, 0, 6);
|
---|
1460 | hci_stack->le_scanning_state = LE_SCAN_IDLE;
|
---|
1461 | hci_stack->le_scan_type = 0xff;
|
---|
1462 | hci_stack->le_connection_parameter_range.le_conn_interval_min = 0x0006;
|
---|
1463 | hci_stack->le_connection_parameter_range.le_conn_interval_max = 0x0C80;
|
---|
1464 | hci_stack->le_connection_parameter_range.le_conn_latency_min = 0x0000;
|
---|
1465 | hci_stack->le_connection_parameter_range.le_conn_latency_max = 0x03E8;
|
---|
1466 | hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 0x000A;
|
---|
1467 | hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 0x0C80;
|
---|
1468 | }
|
---|
1469 |
|
---|
1470 | void hci_init(const hci_transport_t *transport, void *config, bt_control_t *control, remote_device_db_t const* remote_device_db){
|
---|
1471 |
|
---|
1472 | #ifdef HAVE_MALLOC
|
---|
1473 | if (!hci_stack) {
|
---|
1474 | hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t));
|
---|
1475 | }
|
---|
1476 | #else
|
---|
1477 | hci_stack = &hci_stack_static;
|
---|
1478 | #endif
|
---|
1479 | memset(hci_stack, 0, sizeof(hci_stack_t));
|
---|
1480 |
|
---|
1481 | // reference to use transport layer implementation
|
---|
1482 | hci_stack->hci_transport = transport;
|
---|
1483 |
|
---|
1484 | // references to used control implementation
|
---|
1485 | hci_stack->control = control;
|
---|
1486 |
|
---|
1487 | // reference to used config
|
---|
1488 | hci_stack->config = config;
|
---|
1489 |
|
---|
1490 | // higher level handler
|
---|
1491 | hci_stack->packet_handler = dummy_handler;
|
---|
1492 |
|
---|
1493 | // store and open remote device db
|
---|
1494 | hci_stack->remote_device_db = remote_device_db;
|
---|
1495 | if (hci_stack->remote_device_db) {
|
---|
1496 | hci_stack->remote_device_db->open();
|
---|
1497 | }
|
---|
1498 |
|
---|
1499 | // max acl payload size defined in config.h
|
---|
1500 | hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE;
|
---|
1501 |
|
---|
1502 | // register packet handlers with transport
|
---|
1503 | transport->register_packet_handler(&packet_handler);
|
---|
1504 |
|
---|
1505 | hci_stack->state = HCI_STATE_OFF;
|
---|
1506 |
|
---|
1507 | // class of device
|
---|
1508 | hci_stack->class_of_device = 0x007a020c; // Smartphone
|
---|
1509 |
|
---|
1510 | // bondable by default
|
---|
1511 | hci_stack->bondable = 1;
|
---|
1512 |
|
---|
1513 | // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept
|
---|
1514 | hci_stack->ssp_enable = 1;
|
---|
1515 | hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT;
|
---|
1516 | hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING;
|
---|
1517 | hci_stack->ssp_auto_accept = 1;
|
---|
1518 |
|
---|
1519 | hci_state_reset();
|
---|
1520 | }
|
---|
1521 |
|
---|
1522 | void hci_close(){
|
---|
1523 | // close remote device db
|
---|
1524 | if (hci_stack->remote_device_db) {
|
---|
1525 | hci_stack->remote_device_db->close();
|
---|
1526 | }
|
---|
1527 | while (hci_stack->connections) {
|
---|
1528 | // cancel all l2cap connections
|
---|
1529 | hci_emit_disconnection_complete(((hci_connection_t *) hci_stack->connections)->con_handle, 0x16); // terminated by local host
|
---|
1530 | hci_shutdown_connection((hci_connection_t *) hci_stack->connections);
|
---|
1531 | }
|
---|
1532 | hci_power_control(HCI_POWER_OFF);
|
---|
1533 |
|
---|
1534 | #ifdef HAVE_MALLOC
|
---|
1535 | free(hci_stack);
|
---|
1536 | #endif
|
---|
1537 | hci_stack = NULL;
|
---|
1538 | }
|
---|
1539 |
|
---|
1540 | void hci_set_class_of_device(uint32_t class_of_device){
|
---|
1541 | hci_stack->class_of_device = class_of_device;
|
---|
1542 | }
|
---|
1543 |
|
---|
1544 | void hci_disable_l2cap_timeout_check(){
|
---|
1545 | disable_l2cap_timeouts = 1;
|
---|
1546 | }
|
---|
1547 | // State-Module-Driver overview
|
---|
1548 | // state module low-level
|
---|
1549 | // HCI_STATE_OFF off close
|
---|
1550 | // HCI_STATE_INITIALIZING, on open
|
---|
1551 | // HCI_STATE_WORKING, on open
|
---|
1552 | // HCI_STATE_HALTING, on open
|
---|
1553 | // HCI_STATE_SLEEPING, off/sleep close
|
---|
1554 | // HCI_STATE_FALLING_ASLEEP on open
|
---|
1555 |
|
---|
1556 | static int hci_power_control_on(void){
|
---|
1557 |
|
---|
1558 | // power on
|
---|
1559 | int err = 0;
|
---|
1560 | if (hci_stack->control && hci_stack->control->on){
|
---|
1561 | err = (*hci_stack->control->on)(hci_stack->config);
|
---|
1562 | }
|
---|
1563 | if (err){
|
---|
1564 | log_error( "POWER_ON failed");
|
---|
1565 | hci_emit_hci_open_failed();
|
---|
1566 | return err;
|
---|
1567 | }
|
---|
1568 |
|
---|
1569 | // open low-level device
|
---|
1570 | err = hci_stack->hci_transport->open(hci_stack->config);
|
---|
1571 | if (err){
|
---|
1572 | log_error( "HCI_INIT failed, turning Bluetooth off again");
|
---|
1573 | if (hci_stack->control && hci_stack->control->off){
|
---|
1574 | (*hci_stack->control->off)(hci_stack->config);
|
---|
1575 | }
|
---|
1576 | hci_emit_hci_open_failed();
|
---|
1577 | return err;
|
---|
1578 | }
|
---|
1579 | return 0;
|
---|
1580 | }
|
---|
1581 |
|
---|
1582 | static void hci_power_control_off(void){
|
---|
1583 |
|
---|
1584 | log_info("hci_power_control_off");
|
---|
1585 |
|
---|
1586 | // close low-level device
|
---|
1587 | hci_stack->hci_transport->close(hci_stack->config);
|
---|
1588 |
|
---|
1589 | log_info("hci_power_control_off - hci_transport closed");
|
---|
1590 |
|
---|
1591 | // power off
|
---|
1592 | if (hci_stack->control && hci_stack->control->off){
|
---|
1593 | (*hci_stack->control->off)(hci_stack->config);
|
---|
1594 | }
|
---|
1595 |
|
---|
1596 | log_info("hci_power_control_off - control closed");
|
---|
1597 |
|
---|
1598 | hci_stack->state = HCI_STATE_OFF;
|
---|
1599 | }
|
---|
1600 |
|
---|
1601 | static void hci_power_control_sleep(void){
|
---|
1602 |
|
---|
1603 | log_info("hci_power_control_sleep");
|
---|
1604 |
|
---|
1605 | #if 0
|
---|
1606 | // don't close serial port during sleep
|
---|
1607 |
|
---|
1608 | // close low-level device
|
---|
1609 | hci_stack->hci_transport->close(hci_stack->config);
|
---|
1610 | #endif
|
---|
1611 |
|
---|
1612 | // sleep mode
|
---|
1613 | if (hci_stack->control && hci_stack->control->sleep){
|
---|
1614 | (*hci_stack->control->sleep)(hci_stack->config);
|
---|
1615 | }
|
---|
1616 |
|
---|
1617 | hci_stack->state = HCI_STATE_SLEEPING;
|
---|
1618 | }
|
---|
1619 |
|
---|
1620 | static int hci_power_control_wake(void){
|
---|
1621 |
|
---|
1622 | log_info("hci_power_control_wake");
|
---|
1623 |
|
---|
1624 | // wake on
|
---|
1625 | if (hci_stack->control && hci_stack->control->wake){
|
---|
1626 | (*hci_stack->control->wake)(hci_stack->config);
|
---|
1627 | }
|
---|
1628 |
|
---|
1629 | #if 0
|
---|
1630 | // open low-level device
|
---|
1631 | int err = hci_stack->hci_transport->open(hci_stack->config);
|
---|
1632 | if (err){
|
---|
1633 | log_error( "HCI_INIT failed, turning Bluetooth off again");
|
---|
1634 | if (hci_stack->control && hci_stack->control->off){
|
---|
1635 | (*hci_stack->control->off)(hci_stack->config);
|
---|
1636 | }
|
---|
1637 | hci_emit_hci_open_failed();
|
---|
1638 | return err;
|
---|
1639 | }
|
---|
1640 | #endif
|
---|
1641 |
|
---|
1642 | return 0;
|
---|
1643 | }
|
---|
1644 |
|
---|
1645 | static void hci_power_transition_to_initializing(void){
|
---|
1646 | // set up state machine
|
---|
1647 | hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent
|
---|
1648 | hci_stack->hci_packet_buffer_reserved = 0;
|
---|
1649 | hci_stack->state = HCI_STATE_INITIALIZING;
|
---|
1650 | hci_stack->substate = 0;
|
---|
1651 | }
|
---|
1652 |
|
---|
1653 | int hci_power_control(HCI_POWER_MODE power_mode){
|
---|
1654 | int err;
|
---|
1655 |
|
---|
1656 | log_info("hci_power_control: %u, current mode %u", power_mode, hci_stack->state);
|
---|
1657 |
|
---|
1658 | err = 0;
|
---|
1659 | switch (hci_stack->state){
|
---|
1660 |
|
---|
1661 | case HCI_STATE_OFF:
|
---|
1662 | switch (power_mode){
|
---|
1663 | case HCI_POWER_ON:
|
---|
1664 | err = hci_power_control_on();
|
---|
1665 | if (err) {
|
---|
1666 | log_error("hci_power_control_on() error %u", err);
|
---|
1667 | return err;
|
---|
1668 | }
|
---|
1669 | hci_power_transition_to_initializing();
|
---|
1670 | break;
|
---|
1671 | case HCI_POWER_OFF:
|
---|
1672 | // do nothing
|
---|
1673 | break;
|
---|
1674 | case HCI_POWER_SLEEP:
|
---|
1675 | // do nothing (with SLEEP == OFF)
|
---|
1676 | break;
|
---|
1677 | }
|
---|
1678 | break;
|
---|
1679 |
|
---|
1680 | case HCI_STATE_INITIALIZING:
|
---|
1681 | switch (power_mode){
|
---|
1682 | case HCI_POWER_ON:
|
---|
1683 | // do nothing
|
---|
1684 | break;
|
---|
1685 | case HCI_POWER_OFF:
|
---|
1686 | // no connections yet, just turn it off
|
---|
1687 | hci_power_control_off();
|
---|
1688 | break;
|
---|
1689 | case HCI_POWER_SLEEP:
|
---|
1690 | // no connections yet, just turn it off
|
---|
1691 | hci_power_control_sleep();
|
---|
1692 | break;
|
---|
1693 | }
|
---|
1694 | break;
|
---|
1695 |
|
---|
1696 | case HCI_STATE_WORKING:
|
---|
1697 | switch (power_mode){
|
---|
1698 | case HCI_POWER_ON:
|
---|
1699 | // do nothing
|
---|
1700 | break;
|
---|
1701 | case HCI_POWER_OFF:
|
---|
1702 | // see hci_run
|
---|
1703 | hci_stack->state = HCI_STATE_HALTING;
|
---|
1704 | break;
|
---|
1705 | case HCI_POWER_SLEEP:
|
---|
1706 | // see hci_run
|
---|
1707 | hci_stack->state = HCI_STATE_FALLING_ASLEEP;
|
---|
1708 | hci_stack->substate = 0;
|
---|
1709 | break;
|
---|
1710 | }
|
---|
1711 | break;
|
---|
1712 |
|
---|
1713 | case HCI_STATE_HALTING:
|
---|
1714 | switch (power_mode){
|
---|
1715 | case HCI_POWER_ON:
|
---|
1716 | hci_power_transition_to_initializing();
|
---|
1717 | break;
|
---|
1718 | case HCI_POWER_OFF:
|
---|
1719 | // do nothing
|
---|
1720 | break;
|
---|
1721 | case HCI_POWER_SLEEP:
|
---|
1722 | // see hci_run
|
---|
1723 | hci_stack->state = HCI_STATE_FALLING_ASLEEP;
|
---|
1724 | hci_stack->substate = 0;
|
---|
1725 | break;
|
---|
1726 | }
|
---|
1727 | break;
|
---|
1728 |
|
---|
1729 | case HCI_STATE_FALLING_ASLEEP:
|
---|
1730 | switch (power_mode){
|
---|
1731 | case HCI_POWER_ON:
|
---|
1732 |
|
---|
1733 | #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL)
|
---|
1734 | // nothing to do, if H4 supports power management
|
---|
1735 | if (bt_control_iphone_power_management_enabled()){
|
---|
1736 | hci_stack->state = HCI_STATE_INITIALIZING;
|
---|
1737 | hci_stack->substate = HCI_INTIALIZING_SUBSTATE_AFTER_SLEEP;
|
---|
1738 | break;
|
---|
1739 | }
|
---|
1740 | #endif
|
---|
1741 | hci_power_transition_to_initializing();
|
---|
1742 | break;
|
---|
1743 | case HCI_POWER_OFF:
|
---|
1744 | // see hci_run
|
---|
1745 | hci_stack->state = HCI_STATE_HALTING;
|
---|
1746 | break;
|
---|
1747 | case HCI_POWER_SLEEP:
|
---|
1748 | // do nothing
|
---|
1749 | break;
|
---|
1750 | }
|
---|
1751 | break;
|
---|
1752 |
|
---|
1753 | case HCI_STATE_SLEEPING:
|
---|
1754 | switch (power_mode){
|
---|
1755 | case HCI_POWER_ON:
|
---|
1756 |
|
---|
1757 | #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL)
|
---|
1758 | // nothing to do, if H4 supports power management
|
---|
1759 | if (bt_control_iphone_power_management_enabled()){
|
---|
1760 | hci_stack->state = HCI_STATE_INITIALIZING;
|
---|
1761 | hci_stack->substate = HCI_INTIALIZING_SUBSTATE_AFTER_SLEEP;
|
---|
1762 | hci_update_scan_enable();
|
---|
1763 | break;
|
---|
1764 | }
|
---|
1765 | #endif
|
---|
1766 | err = hci_power_control_wake();
|
---|
1767 | if (err) return err;
|
---|
1768 | hci_power_transition_to_initializing();
|
---|
1769 | break;
|
---|
1770 | case HCI_POWER_OFF:
|
---|
1771 | hci_stack->state = HCI_STATE_HALTING;
|
---|
1772 | break;
|
---|
1773 | case HCI_POWER_SLEEP:
|
---|
1774 | // do nothing
|
---|
1775 | break;
|
---|
1776 | }
|
---|
1777 | break;
|
---|
1778 | }
|
---|
1779 |
|
---|
1780 | // create internal event
|
---|
1781 | hci_emit_state();
|
---|
1782 |
|
---|
1783 | // trigger next/first action
|
---|
1784 | hci_run();
|
---|
1785 |
|
---|
1786 | return 0;
|
---|
1787 | }
|
---|
1788 |
|
---|
1789 | static void hci_update_scan_enable(void){
|
---|
1790 | // 2 = page scan, 1 = inq scan
|
---|
1791 | hci_stack->new_scan_enable_value = hci_stack->connectable << 1 | hci_stack->discoverable;
|
---|
1792 | hci_run();
|
---|
1793 | }
|
---|
1794 |
|
---|
1795 | void gap_discoverable_control(uint8_t enable){
|
---|
1796 | if (enable) enable = 1; // normalize argument
|
---|
1797 |
|
---|
1798 | if (hci_stack->discoverable == enable){
|
---|
1799 | hci_emit_discoverable_enabled(hci_stack->discoverable);
|
---|
1800 | return;
|
---|
1801 | }
|
---|
1802 |
|
---|
1803 | hci_stack->discoverable = enable;
|
---|
1804 | hci_update_scan_enable();
|
---|
1805 | }
|
---|
1806 |
|
---|
1807 | void hci_connectable_control(uint8_t enable){
|
---|
1808 | if (enable) enable = 1; // normalize argument
|
---|
1809 |
|
---|
1810 | // don't emit event
|
---|
1811 | if (hci_stack->connectable == enable) return;
|
---|
1812 |
|
---|
1813 | hci_stack->connectable = enable;
|
---|
1814 | hci_update_scan_enable();
|
---|
1815 | }
|
---|
1816 |
|
---|
1817 | bd_addr_t * hci_local_bd_addr(void){
|
---|
1818 | return &hci_stack->local_bd_addr;
|
---|
1819 | }
|
---|
1820 |
|
---|
1821 | void hci_run(){
|
---|
1822 |
|
---|
1823 | hci_connection_t * connection;
|
---|
1824 | linked_item_t * it;
|
---|
1825 |
|
---|
1826 | // send continuation fragments first, as they block the prepared packet buffer
|
---|
1827 | if (hci_stack->acl_fragmentation_total_size > 0) {
|
---|
1828 | hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer);
|
---|
1829 | if (hci_can_send_prepared_acl_packet_now(con_handle)){
|
---|
1830 | hci_connection_t *connection = hci_connection_for_handle(con_handle);
|
---|
1831 | if (connection) {
|
---|
1832 | hci_send_acl_packet_fragments(connection);
|
---|
1833 | return;
|
---|
1834 | }
|
---|
1835 | // connection gone -> discard further fragments
|
---|
1836 | hci_stack->acl_fragmentation_total_size = 0;
|
---|
1837 | hci_stack->acl_fragmentation_pos = 0;
|
---|
1838 | }
|
---|
1839 | }
|
---|
1840 |
|
---|
1841 | if (!hci_can_send_command_packet_now()) return;
|
---|
1842 |
|
---|
1843 | // global/non-connection oriented commands
|
---|
1844 |
|
---|
1845 | // decline incoming connections
|
---|
1846 | if (hci_stack->decline_reason){
|
---|
1847 | uint8_t reason = hci_stack->decline_reason;
|
---|
1848 | hci_stack->decline_reason = 0;
|
---|
1849 | hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason);
|
---|
1850 | return;
|
---|
1851 | }
|
---|
1852 |
|
---|
1853 | // send scan enable
|
---|
1854 | if (hci_stack->state == HCI_STATE_WORKING && hci_stack->new_scan_enable_value != 0xff && hci_classic_supported()){
|
---|
1855 | hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value);
|
---|
1856 | hci_stack->new_scan_enable_value = 0xff;
|
---|
1857 | return;
|
---|
1858 | }
|
---|
1859 |
|
---|
1860 | #ifdef HAVE_BLE
|
---|
1861 | // handle le scan
|
---|
1862 | if (hci_stack->state == HCI_STATE_WORKING){
|
---|
1863 | switch(hci_stack->le_scanning_state){
|
---|
1864 | case LE_START_SCAN:
|
---|
1865 | hci_stack->le_scanning_state = LE_SCANNING;
|
---|
1866 | hci_send_cmd(&hci_le_set_scan_enable, 1, 0);
|
---|
1867 | return;
|
---|
1868 |
|
---|
1869 | case LE_STOP_SCAN:
|
---|
1870 | hci_stack->le_scanning_state = LE_SCAN_IDLE;
|
---|
1871 | hci_send_cmd(&hci_le_set_scan_enable, 0, 0);
|
---|
1872 | return;
|
---|
1873 | default:
|
---|
1874 | break;
|
---|
1875 | }
|
---|
1876 | if (hci_stack->le_scan_type != 0xff){
|
---|
1877 | // defaults: active scanning, accept all advertisement packets
|
---|
1878 | int scan_type = hci_stack->le_scan_type;
|
---|
1879 | hci_stack->le_scan_type = 0xff;
|
---|
1880 | hci_send_cmd(&hci_le_set_scan_parameters, scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, hci_stack->adv_addr_type, 0);
|
---|
1881 | return;
|
---|
1882 | }
|
---|
1883 | }
|
---|
1884 | #endif
|
---|
1885 |
|
---|
1886 | // send pending HCI commands
|
---|
1887 | for (it = (linked_item_t *) hci_stack->connections; it ; it = it->next){
|
---|
1888 | connection = (hci_connection_t *) it;
|
---|
1889 |
|
---|
1890 | switch(connection->state){
|
---|
1891 | case SEND_CREATE_CONNECTION:
|
---|
1892 | switch(connection->address_type){
|
---|
1893 | case BD_ADDR_TYPE_CLASSIC:
|
---|
1894 | log_info("sending hci_create_connection");
|
---|
1895 | hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, 1);
|
---|
1896 | break;
|
---|
1897 | default:
|
---|
1898 | #ifdef HAVE_BLE
|
---|
1899 | log_info("sending hci_le_create_connection");
|
---|
1900 | hci_send_cmd(&hci_le_create_connection,
|
---|
1901 | 0x0060, // scan interval: 60 ms
|
---|
1902 | 0x0030, // scan interval: 30 ms
|
---|
1903 | 0, // don't use whitelist
|
---|
1904 | connection->address_type, // peer address type
|
---|
1905 | connection->address, // peer bd addr
|
---|
1906 | hci_stack->adv_addr_type, // our addr type:
|
---|
1907 | 0x0008, // conn interval min
|
---|
1908 | 0x0018, // conn interval max
|
---|
1909 | 0, // conn latency
|
---|
1910 | 0x0048, // supervision timeout
|
---|
1911 | 0x0001, // min ce length
|
---|
1912 | 0x0001 // max ce length
|
---|
1913 | );
|
---|
1914 |
|
---|
1915 | connection->state = SENT_CREATE_CONNECTION;
|
---|
1916 | #endif
|
---|
1917 | break;
|
---|
1918 | }
|
---|
1919 | return;
|
---|
1920 |
|
---|
1921 | case RECEIVED_CONNECTION_REQUEST:
|
---|
1922 | log_info("sending hci_accept_connection_request");
|
---|
1923 | connection->state = ACCEPTED_CONNECTION_REQUEST;
|
---|
1924 | hci_send_cmd(&hci_accept_connection_request, connection->address, 1);
|
---|
1925 | return;
|
---|
1926 |
|
---|
1927 | #ifdef HAVE_BLE
|
---|
1928 | case SEND_CANCEL_CONNECTION:
|
---|
1929 | connection->state = SENT_CANCEL_CONNECTION;
|
---|
1930 | hci_send_cmd(&hci_le_create_connection_cancel);
|
---|
1931 | return;
|
---|
1932 | #endif
|
---|
1933 | case SEND_DISCONNECT:
|
---|
1934 | connection->state = SENT_DISCONNECT;
|
---|
1935 | hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection
|
---|
1936 | return;
|
---|
1937 |
|
---|
1938 | default:
|
---|
1939 | break;
|
---|
1940 | }
|
---|
1941 |
|
---|
1942 | if (connection->authentication_flags & HANDLE_LINK_KEY_REQUEST){
|
---|
1943 | link_key_t link_key;
|
---|
1944 | link_key_type_t link_key_type;
|
---|
1945 | log_info("responding to link key request");
|
---|
1946 | connectionClearAuthenticationFlags(connection, HANDLE_LINK_KEY_REQUEST);
|
---|
1947 | if ( hci_stack->remote_device_db
|
---|
1948 | && hci_stack->remote_device_db->get_link_key( &connection->address, &link_key, &link_key_type)
|
---|
1949 | && gap_security_level_for_link_key_type(link_key_type) >= connection->requested_security_level){
|
---|
1950 | connection->link_key_type = link_key_type;
|
---|
1951 | hci_send_cmd(&hci_link_key_request_reply, connection->address, &link_key);
|
---|
1952 | } else {
|
---|
1953 | hci_send_cmd(&hci_link_key_request_negative_reply, connection->address);
|
---|
1954 | }
|
---|
1955 | return;
|
---|
1956 | }
|
---|
1957 |
|
---|
1958 | if (connection->authentication_flags & DENY_PIN_CODE_REQUEST){
|
---|
1959 | log_info("denying to pin request");
|
---|
1960 | connectionClearAuthenticationFlags(connection, DENY_PIN_CODE_REQUEST);
|
---|
1961 | hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address);
|
---|
1962 | return;
|
---|
1963 | }
|
---|
1964 |
|
---|
1965 | if (connection->authentication_flags & SEND_IO_CAPABILITIES_REPLY){
|
---|
1966 | connectionClearAuthenticationFlags(connection, SEND_IO_CAPABILITIES_REPLY);
|
---|
1967 | log_info("IO Capability Request received, stack bondable %u, io cap %u", hci_stack->bondable, hci_stack->ssp_io_capability);
|
---|
1968 | if (hci_stack->bondable && (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN)){
|
---|
1969 | // tweak authentication requirements
|
---|
1970 | uint8_t authreq = hci_stack->ssp_authentication_requirement;
|
---|
1971 | if (connection->bonding_flags & BONDING_DEDICATED){
|
---|
1972 | authreq = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING;
|
---|
1973 | }
|
---|
1974 | if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){
|
---|
1975 | authreq |= 1;
|
---|
1976 | }
|
---|
1977 | hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, NULL, authreq);
|
---|
1978 | } else {
|
---|
1979 | hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED);
|
---|
1980 | }
|
---|
1981 | return;
|
---|
1982 | }
|
---|
1983 |
|
---|
1984 | if (connection->authentication_flags & SEND_USER_CONFIRM_REPLY){
|
---|
1985 | connectionClearAuthenticationFlags(connection, SEND_USER_CONFIRM_REPLY);
|
---|
1986 | hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address);
|
---|
1987 | return;
|
---|
1988 | }
|
---|
1989 |
|
---|
1990 | if (connection->authentication_flags & SEND_USER_PASSKEY_REPLY){
|
---|
1991 | connectionClearAuthenticationFlags(connection, SEND_USER_PASSKEY_REPLY);
|
---|
1992 | hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000);
|
---|
1993 | return;
|
---|
1994 | }
|
---|
1995 |
|
---|
1996 | if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES){
|
---|
1997 | connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES;
|
---|
1998 | hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle);
|
---|
1999 | return;
|
---|
2000 | }
|
---|
2001 |
|
---|
2002 | if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){
|
---|
2003 | connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK;
|
---|
2004 | hci_send_cmd(&hci_disconnect, connection->con_handle, 0x0005); // authentication failure
|
---|
2005 | return;
|
---|
2006 | }
|
---|
2007 | if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){
|
---|
2008 | connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE;
|
---|
2009 | connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT;
|
---|
2010 | hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // authentication done
|
---|
2011 | return;
|
---|
2012 | }
|
---|
2013 | if (connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST){
|
---|
2014 | connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST;
|
---|
2015 | hci_send_cmd(&hci_authentication_requested, connection->con_handle);
|
---|
2016 | return;
|
---|
2017 | }
|
---|
2018 | if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){
|
---|
2019 | connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST;
|
---|
2020 | hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1);
|
---|
2021 | return;
|
---|
2022 | }
|
---|
2023 |
|
---|
2024 | #ifdef HAVE_BLE
|
---|
2025 | if (connection->le_con_parameter_update_state == CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS){
|
---|
2026 | connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE;
|
---|
2027 |
|
---|
2028 | uint16_t connection_interval_min = connection->le_conn_interval_min;
|
---|
2029 | connection->le_conn_interval_min = 0;
|
---|
2030 | hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection_interval_min,
|
---|
2031 | connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout,
|
---|
2032 | 0x0000, 0xffff);
|
---|
2033 | }
|
---|
2034 | #endif
|
---|
2035 | }
|
---|
2036 |
|
---|
2037 | switch (hci_stack->state){
|
---|
2038 | case HCI_STATE_INITIALIZING:
|
---|
2039 | hci_initializing_state_machine();
|
---|
2040 | break;
|
---|
2041 |
|
---|
2042 | case HCI_STATE_HALTING:
|
---|
2043 |
|
---|
2044 | log_info("HCI_STATE_HALTING");
|
---|
2045 | // close all open connections
|
---|
2046 | connection = (hci_connection_t *) hci_stack->connections;
|
---|
2047 | if (connection){
|
---|
2048 |
|
---|
2049 | // send disconnect
|
---|
2050 | if (!hci_can_send_command_packet_now()) return;
|
---|
2051 |
|
---|
2052 | log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, (uint16_t)connection->con_handle);
|
---|
2053 | hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection
|
---|
2054 |
|
---|
2055 | // send disconnected event right away - causes higher layer connections to get closed, too.
|
---|
2056 | hci_shutdown_connection(connection);
|
---|
2057 | return;
|
---|
2058 | }
|
---|
2059 | log_info("HCI_STATE_HALTING, calling off");
|
---|
2060 |
|
---|
2061 | // switch mode
|
---|
2062 | hci_power_control_off();
|
---|
2063 |
|
---|
2064 | log_info("HCI_STATE_HALTING, emitting state");
|
---|
2065 | hci_emit_state();
|
---|
2066 | log_info("HCI_STATE_HALTING, done");
|
---|
2067 | break;
|
---|
2068 |
|
---|
2069 | case HCI_STATE_FALLING_ASLEEP:
|
---|
2070 | switch(hci_stack->substate) {
|
---|
2071 | case 0:
|
---|
2072 | log_info("HCI_STATE_FALLING_ASLEEP");
|
---|
2073 | // close all open connections
|
---|
2074 | connection = (hci_connection_t *) hci_stack->connections;
|
---|
2075 |
|
---|
2076 | #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL)
|
---|
2077 | // don't close connections, if H4 supports power management
|
---|
2078 | if (bt_control_iphone_power_management_enabled()){
|
---|
2079 | connection = NULL;
|
---|
2080 | }
|
---|
2081 | #endif
|
---|
2082 | if (connection){
|
---|
2083 |
|
---|
2084 | // send disconnect
|
---|
2085 | if (!hci_can_send_command_packet_now()) return;
|
---|
2086 |
|
---|
2087 | log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle);
|
---|
2088 | hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection
|
---|
2089 |
|
---|
2090 | // send disconnected event right away - causes higher layer connections to get closed, too.
|
---|
2091 | hci_shutdown_connection(connection);
|
---|
2092 | return;
|
---|
2093 | }
|
---|
2094 |
|
---|
2095 | if (hci_classic_supported()){
|
---|
2096 | // disable page and inquiry scan
|
---|
2097 | if (!hci_can_send_command_packet_now()) return;
|
---|
2098 |
|
---|
2099 | log_info("HCI_STATE_HALTING, disabling inq scans");
|
---|
2100 | hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan
|
---|
2101 |
|
---|
2102 | // continue in next sub state
|
---|
2103 | hci_stack->substate++;
|
---|
2104 | break;
|
---|
2105 | }
|
---|
2106 | // fall through for ble-only chips
|
---|
2107 |
|
---|
2108 | case 2:
|
---|
2109 | log_info("HCI_STATE_HALTING, calling sleep");
|
---|
2110 | #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL)
|
---|
2111 | // don't actually go to sleep, if H4 supports power management
|
---|
2112 | if (bt_control_iphone_power_management_enabled()){
|
---|
2113 | // SLEEP MODE reached
|
---|
2114 | hci_stack->state = HCI_STATE_SLEEPING;
|
---|
2115 | hci_emit_state();
|
---|
2116 | break;
|
---|
2117 | }
|
---|
2118 | #endif
|
---|
2119 | // switch mode
|
---|
2120 | hci_power_control_sleep(); // changes hci_stack->state to SLEEP
|
---|
2121 | hci_emit_state();
|
---|
2122 | break;
|
---|
2123 |
|
---|
2124 | default:
|
---|
2125 | break;
|
---|
2126 | }
|
---|
2127 | break;
|
---|
2128 |
|
---|
2129 | default:
|
---|
2130 | break;
|
---|
2131 | }
|
---|
2132 | }
|
---|
2133 |
|
---|
2134 | int hci_send_cmd_packet(uint8_t *packet, int size){
|
---|
2135 | bd_addr_t addr;
|
---|
2136 | hci_connection_t * conn;
|
---|
2137 | int err;
|
---|
2138 | // house-keeping
|
---|
2139 |
|
---|
2140 | // create_connection?
|
---|
2141 | if (IS_COMMAND(packet, hci_create_connection)){
|
---|
2142 | reverse_bd_addr(&packet[3], addr);
|
---|
2143 | log_info("Create_connection to %s", bd_addr_to_str(addr));
|
---|
2144 |
|
---|
2145 | conn = hci_connection_for_bd_addr_and_type(&addr, BD_ADDR_TYPE_CLASSIC);
|
---|
2146 | if (!conn){
|
---|
2147 | conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_CLASSIC);
|
---|
2148 | if (!conn){
|
---|
2149 | // notify client that alloc failed
|
---|
2150 | hci_emit_connection_complete(conn, BTSTACK_MEMORY_ALLOC_FAILED);
|
---|
2151 | return 0; // don't sent packet to controller
|
---|
2152 | }
|
---|
2153 | conn->state = SEND_CREATE_CONNECTION;
|
---|
2154 | }
|
---|
2155 | log_info("conn state %u", conn->state);
|
---|
2156 | switch (conn->state){
|
---|
2157 | // if connection active exists
|
---|
2158 | case OPEN:
|
---|
2159 | // and OPEN, emit connection complete command, don't send to controller
|
---|
2160 | hci_emit_connection_complete(conn, 0);
|
---|
2161 | return 0;
|
---|
2162 | case SEND_CREATE_CONNECTION:
|
---|
2163 | // connection created by hci, e.g. dedicated bonding
|
---|
2164 | break;
|
---|
2165 | default:
|
---|
2166 | // otherwise, just ignore as it is already in the open process
|
---|
2167 | return 0;
|
---|
2168 | }
|
---|
2169 | conn->state = SENT_CREATE_CONNECTION;
|
---|
2170 | }
|
---|
2171 |
|
---|
2172 | if (IS_COMMAND(packet, hci_link_key_request_reply)){
|
---|
2173 | hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_REPLY);
|
---|
2174 | }
|
---|
2175 | if (IS_COMMAND(packet, hci_link_key_request_negative_reply)){
|
---|
2176 | hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_NEGATIVE_REQUEST);
|
---|
2177 | }
|
---|
2178 |
|
---|
2179 | if (IS_COMMAND(packet, hci_delete_stored_link_key)){
|
---|
2180 | if (hci_stack->remote_device_db){
|
---|
2181 | reverse_bd_addr(&packet[3], addr);
|
---|
2182 | hci_stack->remote_device_db->delete_link_key(&addr);
|
---|
2183 | }
|
---|
2184 | }
|
---|
2185 |
|
---|
2186 | if (IS_COMMAND(packet, hci_pin_code_request_negative_reply)
|
---|
2187 | || IS_COMMAND(packet, hci_pin_code_request_reply)){
|
---|
2188 | reverse_bd_addr(&packet[3], addr);
|
---|
2189 | conn = hci_connection_for_bd_addr_and_type(&addr, BD_ADDR_TYPE_CLASSIC);
|
---|
2190 | if (conn){
|
---|
2191 | connectionClearAuthenticationFlags(conn, LEGACY_PAIRING_ACTIVE);
|
---|
2192 | }
|
---|
2193 | }
|
---|
2194 |
|
---|
2195 | if (IS_COMMAND(packet, hci_user_confirmation_request_negative_reply)
|
---|
2196 | || IS_COMMAND(packet, hci_user_confirmation_request_reply)
|
---|
2197 | || IS_COMMAND(packet, hci_user_passkey_request_negative_reply)
|
---|
2198 | || IS_COMMAND(packet, hci_user_passkey_request_reply)) {
|
---|
2199 | reverse_bd_addr(&packet[3], addr);
|
---|
2200 | conn = hci_connection_for_bd_addr_and_type(&addr, BD_ADDR_TYPE_CLASSIC);
|
---|
2201 | if (conn){
|
---|
2202 | connectionClearAuthenticationFlags(conn, SSP_PAIRING_ACTIVE);
|
---|
2203 | }
|
---|
2204 | }
|
---|
2205 |
|
---|
2206 | #ifdef HAVE_BLE
|
---|
2207 | if (IS_COMMAND(packet, hci_le_set_advertising_parameters)){
|
---|
2208 | hci_stack->adv_addr_type = packet[8];
|
---|
2209 | }
|
---|
2210 | if (IS_COMMAND(packet, hci_le_set_random_address)){
|
---|
2211 | reverse_bd_addr(&packet[3], hci_stack->adv_address);
|
---|
2212 | }
|
---|
2213 | #endif
|
---|
2214 |
|
---|
2215 | hci_stack->num_cmd_packets--;
|
---|
2216 |
|
---|
2217 | hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size);
|
---|
2218 | err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size);
|
---|
2219 |
|
---|
2220 | // release packet buffer for synchronous transport implementations
|
---|
2221 | if (hci_transport_synchronous() && (packet == hci_stack->hci_packet_buffer)){
|
---|
2222 | hci_stack->hci_packet_buffer_reserved = 0;
|
---|
2223 | }
|
---|
2224 |
|
---|
2225 | return err;
|
---|
2226 | }
|
---|
2227 |
|
---|
2228 | // disconnect because of security block
|
---|
2229 | void hci_disconnect_security_block(hci_con_handle_t con_handle){
|
---|
2230 | hci_connection_t * connection = hci_connection_for_handle(con_handle);
|
---|
2231 | if (!connection) return;
|
---|
2232 | connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK;
|
---|
2233 | }
|
---|
2234 |
|
---|
2235 |
|
---|
2236 | // Configure Secure Simple Pairing
|
---|
2237 |
|
---|
2238 | // enable will enable SSP during init
|
---|
2239 | void hci_ssp_set_enable(int enable){
|
---|
2240 | hci_stack->ssp_enable = enable;
|
---|
2241 | }
|
---|
2242 |
|
---|
2243 | int hci_local_ssp_activated(){
|
---|
2244 | return hci_ssp_supported() && hci_stack->ssp_enable;
|
---|
2245 | }
|
---|
2246 |
|
---|
2247 | // if set, BTstack will respond to io capability request using authentication requirement
|
---|
2248 | void hci_ssp_set_io_capability(int io_capability){
|
---|
2249 | hci_stack->ssp_io_capability = io_capability;
|
---|
2250 | }
|
---|
2251 | void hci_ssp_set_authentication_requirement(int authentication_requirement){
|
---|
2252 | hci_stack->ssp_authentication_requirement = authentication_requirement;
|
---|
2253 | }
|
---|
2254 |
|
---|
2255 | // if set, BTstack will confirm a numberic comparion and enter '000000' if requested
|
---|
2256 | void hci_ssp_set_auto_accept(int auto_accept){
|
---|
2257 | hci_stack->ssp_auto_accept = auto_accept;
|
---|
2258 | }
|
---|
2259 |
|
---|
2260 | /**
|
---|
2261 | * pre: numcmds >= 0 - it's allowed to send a command to the controller
|
---|
2262 | */
|
---|
2263 | int hci_send_cmd(const hci_cmd_t *cmd, ...){
|
---|
2264 | uint8_t * packet;
|
---|
2265 | va_list argptr;
|
---|
2266 | uint16_t size;
|
---|
2267 |
|
---|
2268 | if (!hci_can_send_command_packet_now()){
|
---|
2269 | log_error("hci_send_cmd called but cannot send packet now");
|
---|
2270 | return 0;
|
---|
2271 | }
|
---|
2272 |
|
---|
2273 | // for HCI INITIALIZATION
|
---|
2274 | // log_info("hci_send_cmd: opcode %04x", cmd->opcode);
|
---|
2275 | hci_stack->last_cmd_opcode = cmd->opcode;
|
---|
2276 |
|
---|
2277 | hci_reserve_packet_buffer();
|
---|
2278 | packet = hci_stack->hci_packet_buffer;
|
---|
2279 |
|
---|
2280 | va_start(argptr, cmd);
|
---|
2281 | size = hci_create_cmd_internal(packet, cmd, argptr);
|
---|
2282 | va_end(argptr);
|
---|
2283 |
|
---|
2284 | return hci_send_cmd_packet(packet, size);
|
---|
2285 | }
|
---|
2286 |
|
---|
2287 | // Create various non-HCI events.
|
---|
2288 | // TODO: generalize, use table similar to hci_create_command
|
---|
2289 |
|
---|
2290 | void hci_emit_state(){
|
---|
2291 | uint8_t event[3];
|
---|
2292 | log_info("BTSTACK_EVENT_STATE %u", hci_stack->state);
|
---|
2293 | event[0] = BTSTACK_EVENT_STATE;
|
---|
2294 | event[1] = sizeof(event) - 2;
|
---|
2295 | event[2] = hci_stack->state;
|
---|
2296 | hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
2297 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
2298 | }
|
---|
2299 |
|
---|
2300 | void hci_emit_connection_complete(hci_connection_t *conn, uint8_t status){
|
---|
2301 | uint8_t event[13];
|
---|
2302 | event[0] = HCI_EVENT_CONNECTION_COMPLETE;
|
---|
2303 | event[1] = sizeof(event) - 2;
|
---|
2304 | event[2] = status;
|
---|
2305 | little_endian_store_16(event, 3, conn->con_handle);
|
---|
2306 | reverse_bd_addr(conn->address, &event[5]);
|
---|
2307 | event[11] = 1; // ACL connection
|
---|
2308 | event[12] = 0; // encryption disabled
|
---|
2309 | hci_dump_packet(HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
2310 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
2311 | }
|
---|
2312 |
|
---|
2313 | void hci_emit_le_connection_complete(uint8_t address_type, bd_addr_t * address, uint16_t conn_handle, uint8_t status){
|
---|
2314 | uint8_t event[21];
|
---|
2315 | event[0] = HCI_EVENT_LE_META;
|
---|
2316 | event[1] = sizeof(event) - 2;
|
---|
2317 | event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE;
|
---|
2318 | event[3] = status;
|
---|
2319 | little_endian_store_16(event, 4, conn_handle);
|
---|
2320 | event[6] = 0; // TODO: role
|
---|
2321 | event[7] = address_type;
|
---|
2322 | reverse_bd_addr(*address, &event[8]);
|
---|
2323 | little_endian_store_16(event, 14, 0); // interval
|
---|
2324 | little_endian_store_16(event, 16, 0); // latency
|
---|
2325 | little_endian_store_16(event, 18, 0); // supervision timeout
|
---|
2326 | event[20] = 0; // master clock accuracy
|
---|
2327 | hci_dump_packet(HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
2328 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
2329 | }
|
---|
2330 |
|
---|
2331 | void hci_emit_disconnection_complete(uint16_t handle, uint8_t reason){
|
---|
2332 | uint8_t event[6];
|
---|
2333 | event[0] = HCI_EVENT_DISCONNECTION_COMPLETE;
|
---|
2334 | event[1] = sizeof(event) - 2;
|
---|
2335 | event[2] = 0; // status = OK
|
---|
2336 | little_endian_store_16(event, 3, handle);
|
---|
2337 | event[5] = reason;
|
---|
2338 | hci_dump_packet(HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
2339 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
2340 | }
|
---|
2341 |
|
---|
2342 | void hci_emit_l2cap_check_timeout(hci_connection_t *conn){
|
---|
2343 | uint8_t event[4];
|
---|
2344 | if (disable_l2cap_timeouts) return;
|
---|
2345 | log_info("L2CAP_EVENT_TIMEOUT_CHECK");
|
---|
2346 | event[0] = L2CAP_EVENT_TIMEOUT_CHECK;
|
---|
2347 | event[1] = sizeof(event) - 2;
|
---|
2348 | little_endian_store_16(event, 2, conn->con_handle);
|
---|
2349 | hci_dump_packet(HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
2350 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
2351 | }
|
---|
2352 |
|
---|
2353 | void hci_emit_nr_connections_changed(){
|
---|
2354 | uint8_t event[3];
|
---|
2355 | log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections());
|
---|
2356 | event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED;
|
---|
2357 | event[1] = sizeof(event) - 2;
|
---|
2358 | event[2] = nr_hci_connections();
|
---|
2359 | hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
2360 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
2361 | }
|
---|
2362 |
|
---|
2363 | void hci_emit_hci_open_failed(){
|
---|
2364 | uint8_t event[2];
|
---|
2365 | log_info("BTSTACK_EVENT_POWERON_FAILED");
|
---|
2366 | event[0] = BTSTACK_EVENT_POWERON_FAILED;
|
---|
2367 | event[1] = sizeof(event) - 2;
|
---|
2368 | hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
2369 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
2370 | }
|
---|
2371 |
|
---|
2372 | #ifndef EMBEDDED
|
---|
2373 | void hci_emit_btstack_version() {
|
---|
2374 | uint8_t event[6];
|
---|
2375 | log_info("BTSTACK_EVENT_VERSION %u.%u", BTSTACK_MAJOR, BTSTACK_MINOR);
|
---|
2376 | event[0] = BTSTACK_EVENT_VERSION;
|
---|
2377 | event[1] = sizeof(event) - 2;
|
---|
2378 | event[2] = BTSTACK_MAJOR;
|
---|
2379 | event[3] = BTSTACK_MINOR;
|
---|
2380 | little_endian_store_16(event, 4, BTSTACK_REVISION);
|
---|
2381 | hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
2382 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
2383 | }
|
---|
2384 | #endif
|
---|
2385 |
|
---|
2386 | void hci_emit_system_bluetooth_enabled(uint8_t enabled){
|
---|
2387 | uint8_t event[3];
|
---|
2388 | log_info("BTSTACK_EVENT_SYSTEM_BLUETOOTH_ENABLED %u", enabled);
|
---|
2389 | event[0] = BTSTACK_EVENT_SYSTEM_BLUETOOTH_ENABLED;
|
---|
2390 | event[1] = sizeof(event) - 2;
|
---|
2391 | event[2] = enabled;
|
---|
2392 | hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
2393 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
2394 | }
|
---|
2395 |
|
---|
2396 | void hci_emit_remote_name_cached(bd_addr_t *addr, device_name_t *name){
|
---|
2397 | uint8_t event[2+1+6+248+1]; // +1 for \0 in log_info
|
---|
2398 | event[0] = BTSTACK_EVENT_REMOTE_NAME_CACHED;
|
---|
2399 | event[1] = sizeof(event) - 2 - 1;
|
---|
2400 | event[2] = 0; // just to be compatible with HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE
|
---|
2401 | reverse_bd_addr(*addr, &event[3]);
|
---|
2402 | memcpy(&event[9], name, 248);
|
---|
2403 |
|
---|
2404 | event[9+248] = 0; // assert \0 for log_info
|
---|
2405 | log_info("BTSTACK_EVENT_REMOTE_NAME_CACHED %s = '%s'", bd_addr_to_str(*addr), &event[9]);
|
---|
2406 |
|
---|
2407 | hci_dump_packet(HCI_EVENT_PACKET, 0, event, sizeof(event)-1);
|
---|
2408 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event)-1);
|
---|
2409 | }
|
---|
2410 |
|
---|
2411 | void hci_emit_discoverable_enabled(uint8_t enabled){
|
---|
2412 | uint8_t event[3];
|
---|
2413 | log_info("BTSTACK_EVENT_DISCOVERABLE_ENABLED %u", enabled);
|
---|
2414 | event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED;
|
---|
2415 | event[1] = sizeof(event) - 2;
|
---|
2416 | event[2] = enabled;
|
---|
2417 | hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
2418 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
2419 | }
|
---|
2420 |
|
---|
2421 | void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){
|
---|
2422 | uint8_t event[5];
|
---|
2423 | int pos;
|
---|
2424 | log_info("hci_emit_security_level %u for handle %x", level, con_handle);
|
---|
2425 | pos = 0;
|
---|
2426 | event[pos++] = GAP_SECURITY_LEVEL;
|
---|
2427 | event[pos++] = sizeof(event) - 2;
|
---|
2428 | little_endian_store_16(event, 2, con_handle);
|
---|
2429 | pos += 2;
|
---|
2430 | event[pos++] = level;
|
---|
2431 | hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
2432 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
2433 | }
|
---|
2434 |
|
---|
2435 | void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){
|
---|
2436 | uint8_t event[9];
|
---|
2437 | int pos;
|
---|
2438 | log_info("hci_emit_dedicated_bonding_result %u ", status);
|
---|
2439 | pos = 0;
|
---|
2440 | event[pos++] = GAP_DEDICATED_BONDING_COMPLETED;
|
---|
2441 | event[pos++] = sizeof(event) - 2;
|
---|
2442 | event[pos++] = status;
|
---|
2443 | reverse_bd_addr(address, * (bd_addr_t *) &event[pos]);
|
---|
2444 | pos += 6;
|
---|
2445 | hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
|
---|
2446 | hci_stack->packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
|
---|
2447 | }
|
---|
2448 |
|
---|
2449 | // query if remote side supports SSP
|
---|
2450 | int hci_remote_ssp_supported(hci_con_handle_t con_handle){
|
---|
2451 | hci_connection_t * connection = hci_connection_for_handle(con_handle);
|
---|
2452 | if (!connection) return 0;
|
---|
2453 | return (connection->bonding_flags & BONDING_REMOTE_SUPPORTS_SSP) ? 1 : 0;
|
---|
2454 | }
|
---|
2455 |
|
---|
2456 | int hci_ssp_supported_on_both_sides(hci_con_handle_t handle){
|
---|
2457 | return hci_local_ssp_activated() && hci_remote_ssp_supported(handle);
|
---|
2458 | }
|
---|
2459 |
|
---|
2460 | // GAP API
|
---|
2461 | /**
|
---|
2462 | * @bbrief enable/disable bonding. default is enabled
|
---|
2463 | * @praram enabled
|
---|
2464 | */
|
---|
2465 | void gap_set_bondable_mode(int enable){
|
---|
2466 | hci_stack->bondable = enable ? 1 : 0;
|
---|
2467 | }
|
---|
2468 |
|
---|
2469 | /**
|
---|
2470 | * @brief map link keys to security levels
|
---|
2471 | */
|
---|
2472 | gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){
|
---|
2473 | switch (link_key_type){
|
---|
2474 | case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256:
|
---|
2475 | return LEVEL_4;
|
---|
2476 | case COMBINATION_KEY:
|
---|
2477 | case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192:
|
---|
2478 | return LEVEL_3;
|
---|
2479 | default:
|
---|
2480 | return LEVEL_2;
|
---|
2481 | }
|
---|
2482 | }
|
---|
2483 |
|
---|
2484 | static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){
|
---|
2485 | if (!connection) return LEVEL_0;
|
---|
2486 | if ((connection->authentication_flags & CONNECTION_ENCRYPTED) == 0) return LEVEL_0;
|
---|
2487 | return gap_security_level_for_link_key_type(connection->link_key_type);
|
---|
2488 | }
|
---|
2489 |
|
---|
2490 |
|
---|
2491 | int gap_mitm_protection_required_for_security_level(gap_security_level_t level){
|
---|
2492 | log_info("gap_mitm_protection_required_for_security_level %u", level);
|
---|
2493 | return level > LEVEL_2;
|
---|
2494 | }
|
---|
2495 |
|
---|
2496 | /**
|
---|
2497 | * @brief get current security level
|
---|
2498 | */
|
---|
2499 | gap_security_level_t gap_security_level(hci_con_handle_t con_handle){
|
---|
2500 | hci_connection_t * connection = hci_connection_for_handle(con_handle);
|
---|
2501 | if (!connection) return LEVEL_0;
|
---|
2502 | return gap_security_level_for_connection(connection);
|
---|
2503 | }
|
---|
2504 |
|
---|
2505 | /**
|
---|
2506 | * @brief request connection to device to
|
---|
2507 | * @result GAP_AUTHENTICATION_RESULT
|
---|
2508 | */
|
---|
2509 | void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){
|
---|
2510 | hci_connection_t * connection = hci_connection_for_handle(con_handle);
|
---|
2511 | gap_security_level_t current_level;
|
---|
2512 |
|
---|
2513 | if (!connection){
|
---|
2514 | hci_emit_security_level(con_handle, LEVEL_0);
|
---|
2515 | return;
|
---|
2516 | }
|
---|
2517 | current_level = gap_security_level(con_handle);
|
---|
2518 | log_info("gap_request_security_level %u, current level %u", requested_level, current_level);
|
---|
2519 | if (current_level >= requested_level){
|
---|
2520 | hci_emit_security_level(con_handle, current_level);
|
---|
2521 | return;
|
---|
2522 | }
|
---|
2523 |
|
---|
2524 | connection->requested_security_level = requested_level;
|
---|
2525 |
|
---|
2526 | #if 0
|
---|
2527 | // sending encryption request without a link key results in an error.
|
---|
2528 | // TODO: figure out how to use it properly
|
---|
2529 |
|
---|
2530 | // would enabling ecnryption suffice (>= LEVEL_2)?
|
---|
2531 | if (hci_stack->remote_device_db){
|
---|
2532 | link_key_type_t link_key_type;
|
---|
2533 | link_key_t link_key;
|
---|
2534 | if (hci_stack->remote_device_db->get_link_key( &connection->address, &link_key, &link_key_type)){
|
---|
2535 | if (gap_security_level_for_link_key_type(link_key_type) >= requested_level){
|
---|
2536 | connection->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST;
|
---|
2537 | return;
|
---|
2538 | }
|
---|
2539 | }
|
---|
2540 | }
|
---|
2541 | #endif
|
---|
2542 |
|
---|
2543 | // try to authenticate connection
|
---|
2544 | connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST;
|
---|
2545 | hci_run();
|
---|
2546 | }
|
---|
2547 |
|
---|
2548 | /**
|
---|
2549 | * @brief start dedicated bonding with device. disconnect after bonding
|
---|
2550 | * @param device
|
---|
2551 | * @param request MITM protection
|
---|
2552 | * @result GAP_DEDICATED_BONDING_COMPLETE
|
---|
2553 | */
|
---|
2554 | int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){
|
---|
2555 |
|
---|
2556 | // create connection state machine
|
---|
2557 | hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_CLASSIC);
|
---|
2558 |
|
---|
2559 | if (!connection){
|
---|
2560 | return BTSTACK_MEMORY_ALLOC_FAILED;
|
---|
2561 | }
|
---|
2562 |
|
---|
2563 | // delete linkn key
|
---|
2564 | hci_drop_link_key_for_bd_addr( (bd_addr_t *) &device);
|
---|
2565 |
|
---|
2566 | // configure LEVEL_2/3, dedicated bonding
|
---|
2567 | connection->state = SEND_CREATE_CONNECTION;
|
---|
2568 | connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2;
|
---|
2569 | log_info("gap_dedicated_bonding, mitm %u -> level %u", mitm_protection_required, connection->requested_security_level);
|
---|
2570 | connection->bonding_flags = BONDING_DEDICATED;
|
---|
2571 |
|
---|
2572 | // wait for GAP Security Result and send GAP Dedicated Bonding complete
|
---|
2573 |
|
---|
2574 | // handle: connnection failure (connection complete != ok)
|
---|
2575 | // handle: authentication failure
|
---|
2576 | // handle: disconnect on done
|
---|
2577 |
|
---|
2578 | hci_run();
|
---|
2579 |
|
---|
2580 | return 0;
|
---|
2581 | }
|
---|
2582 |
|
---|
2583 | void gap_set_local_name(const char * local_name){
|
---|
2584 | hci_stack->local_name = local_name;
|
---|
2585 | }
|
---|
2586 |
|
---|
2587 | le_command_status_t le_central_start_scan(){
|
---|
2588 | if (hci_stack->le_scanning_state == LE_SCANNING) return BLE_PERIPHERAL_OK;
|
---|
2589 | hci_stack->le_scanning_state = LE_START_SCAN;
|
---|
2590 | hci_run();
|
---|
2591 | return BLE_PERIPHERAL_OK;
|
---|
2592 | }
|
---|
2593 |
|
---|
2594 | le_command_status_t le_central_stop_scan(){
|
---|
2595 | if ( hci_stack->le_scanning_state == LE_SCAN_IDLE) return BLE_PERIPHERAL_OK;
|
---|
2596 | hci_stack->le_scanning_state = LE_STOP_SCAN;
|
---|
2597 | hci_run();
|
---|
2598 | return BLE_PERIPHERAL_OK;
|
---|
2599 | }
|
---|
2600 |
|
---|
2601 | void le_central_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){
|
---|
2602 | hci_stack->le_scan_type = scan_type;
|
---|
2603 | hci_stack->le_scan_interval = scan_interval;
|
---|
2604 | hci_stack->le_scan_window = scan_window;
|
---|
2605 | hci_run();
|
---|
2606 | }
|
---|
2607 |
|
---|
2608 | le_command_status_t le_central_connect(bd_addr_t * addr, bd_addr_type_t addr_type){
|
---|
2609 | hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type);
|
---|
2610 | if (!conn){
|
---|
2611 | log_info("le_central_connect: no connection exists yet, creating context");
|
---|
2612 | conn = create_connection_for_bd_addr_and_type(*addr, addr_type);
|
---|
2613 | if (!conn){
|
---|
2614 | // notify client that alloc failed
|
---|
2615 | hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED);
|
---|
2616 | log_info("le_central_connect: failed to alloc hci_connection_t");
|
---|
2617 | return BLE_PERIPHERAL_NOT_CONNECTED; // don't sent packet to controller
|
---|
2618 | }
|
---|
2619 | conn->state = SEND_CREATE_CONNECTION;
|
---|
2620 | log_info("le_central_connect: send create connection next");
|
---|
2621 | hci_run();
|
---|
2622 | return BLE_PERIPHERAL_OK;
|
---|
2623 | }
|
---|
2624 |
|
---|
2625 | if (!hci_is_le_connection(conn) ||
|
---|
2626 | conn->state == SEND_CREATE_CONNECTION ||
|
---|
2627 | conn->state == SENT_CREATE_CONNECTION) {
|
---|
2628 | hci_emit_le_connection_complete(conn->address_type, &conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED);
|
---|
2629 | log_error("le_central_connect: classic connection or connect is already being created");
|
---|
2630 | return BLE_PERIPHERAL_IN_WRONG_STATE;
|
---|
2631 | }
|
---|
2632 |
|
---|
2633 | log_info("le_central_connect: context exists with state %u", conn->state);
|
---|
2634 | hci_emit_le_connection_complete(conn->address_type, &conn->address, conn->con_handle, 0);
|
---|
2635 | hci_run();
|
---|
2636 | return BLE_PERIPHERAL_OK;
|
---|
2637 | }
|
---|
2638 |
|
---|
2639 | // @assumption: only a single outgoing LE Connection exists
|
---|
2640 | static hci_connection_t * le_central_get_outgoing_connection(){
|
---|
2641 | linked_item_t *it;
|
---|
2642 | for (it = (linked_item_t *) hci_stack->connections; it ; it = it->next){
|
---|
2643 | hci_connection_t * conn = (hci_connection_t *) it;
|
---|
2644 | if (!hci_is_le_connection(conn)) continue;
|
---|
2645 | switch (conn->state){
|
---|
2646 | case SEND_CREATE_CONNECTION:
|
---|
2647 | case SENT_CREATE_CONNECTION:
|
---|
2648 | return conn;
|
---|
2649 | default:
|
---|
2650 | break;
|
---|
2651 | };
|
---|
2652 | }
|
---|
2653 | return NULL;
|
---|
2654 | }
|
---|
2655 |
|
---|
2656 | le_command_status_t le_central_connect_cancel(){
|
---|
2657 | hci_connection_t * conn = le_central_get_outgoing_connection();
|
---|
2658 | switch (conn->state){
|
---|
2659 | case SEND_CREATE_CONNECTION:
|
---|
2660 | // skip sending create connection and emit event instead
|
---|
2661 | hci_emit_le_connection_complete(conn->address_type, &conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER);
|
---|
2662 | linked_list_remove(&hci_stack->connections, (linked_item_t *) conn);
|
---|
2663 | btstack_memory_hci_connection_free( conn );
|
---|
2664 | break;
|
---|
2665 | case SENT_CREATE_CONNECTION:
|
---|
2666 | // request to send cancel connection
|
---|
2667 | conn->state = SEND_CANCEL_CONNECTION;
|
---|
2668 | hci_run();
|
---|
2669 | break;
|
---|
2670 | default:
|
---|
2671 | break;
|
---|
2672 | }
|
---|
2673 | return BLE_PERIPHERAL_OK;
|
---|
2674 | }
|
---|
2675 |
|
---|
2676 | /**
|
---|
2677 | * @brief Updates the connection parameters for a given LE connection
|
---|
2678 | * @param handle
|
---|
2679 | * @param conn_interval_min (unit: 1.25ms)
|
---|
2680 | * @param conn_interval_max (unit: 1.25ms)
|
---|
2681 | * @param conn_latency
|
---|
2682 | * @param supervision_timeout (unit: 10ms)
|
---|
2683 | * @returns 0 if ok
|
---|
2684 | */
|
---|
2685 | int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min,
|
---|
2686 | uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){
|
---|
2687 | hci_connection_t * connection = hci_connection_for_handle(con_handle);
|
---|
2688 | if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
---|
2689 | connection->le_conn_interval_min = conn_interval_min;
|
---|
2690 | connection->le_conn_interval_max = conn_interval_max;
|
---|
2691 | connection->le_conn_latency = conn_latency;
|
---|
2692 | connection->le_supervision_timeout = supervision_timeout;
|
---|
2693 | return 0;
|
---|
2694 | }
|
---|
2695 |
|
---|
2696 | le_command_status_t gap_disconnect(hci_con_handle_t handle){
|
---|
2697 | hci_connection_t * conn = hci_connection_for_handle(handle);
|
---|
2698 | if (!conn){
|
---|
2699 | hci_emit_disconnection_complete(handle, 0);
|
---|
2700 | return BLE_PERIPHERAL_OK;
|
---|
2701 | }
|
---|
2702 | conn->state = SEND_DISCONNECT;
|
---|
2703 | hci_run();
|
---|
2704 | return BLE_PERIPHERAL_OK;
|
---|
2705 | }
|
---|
2706 |
|
---|
2707 | void hci_disconnect_all(){
|
---|
2708 | linked_list_iterator_t it;
|
---|
2709 | linked_list_iterator_init(&it, &hci_stack->connections);
|
---|
2710 | while (linked_list_iterator_has_next(&it)){
|
---|
2711 | hci_connection_t * con = (hci_connection_t*) linked_list_iterator_next(&it);
|
---|
2712 | if (con->state == SENT_DISCONNECT) continue;
|
---|
2713 | con->state = SEND_DISCONNECT;
|
---|
2714 | }
|
---|
2715 | hci_run();
|
---|
2716 | }
|
---|