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1 /* |
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2 * Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Implementation of core_scan_list_c class. |
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15 * |
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16 */ |
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17 |
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18 /* |
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19 * %version: 14 % |
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20 */ |
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21 |
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22 #include "core_scan_list.h" |
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23 #include "core_tools.h" |
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24 #include "core_am_tools.h" |
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25 #include "am_debug.h" |
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26 |
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27 // ======== MEMBER FUNCTIONS ======== |
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28 |
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29 // --------------------------------------------------------------------------- |
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30 // --------------------------------------------------------------------------- |
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31 // |
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32 core_scan_list_c::core_scan_list_c() : |
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33 scan_list_m( ) |
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34 { |
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35 DEBUG( "core_scan_list_c::core_scan_list_c()" ); |
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36 } |
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37 |
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38 // --------------------------------------------------------------------------- |
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39 // --------------------------------------------------------------------------- |
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40 // |
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41 core_scan_list_c::~core_scan_list_c() |
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42 { |
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43 DEBUG( "core_scan_list_c::~core_scan_list_c()" ); |
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44 |
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45 for ( core_scan_list_entry_s* iter = scan_list_m.first(); iter; iter = scan_list_m.next() ) |
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46 { |
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47 delete iter->ap_data; |
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48 } |
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49 |
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50 scan_list_m.clear(); |
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51 } |
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52 |
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53 // --------------------------------------------------------------------------- |
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54 // --------------------------------------------------------------------------- |
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55 // |
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56 u32_t core_scan_list_c::count() const |
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57 { |
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58 return scan_list_m.count(); |
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59 } |
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60 |
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61 // --------------------------------------------------------------------------- |
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62 // --------------------------------------------------------------------------- |
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63 // |
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64 core_error_e core_scan_list_c::update_entry( |
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65 core_ap_data_c& ap_data ) |
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66 { |
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67 bool_t is_match_found( false_t ); |
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68 const core_mac_address_s bssid( |
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69 ap_data.bssid() ); |
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70 core_ssid_s ssid( |
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71 ap_data.ssid() ); |
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72 u64_t timestamp( |
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73 core_am_tools_c::timestamp() ); |
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74 |
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75 DEBUG6( "core_scan_list_c::update_entry() - searching for entries with BSSID %02X:%02X:%02X:%02X:%02X:%02X", |
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76 bssid.addr[0], bssid.addr[1], bssid.addr[2], |
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77 bssid.addr[3], bssid.addr[4], bssid.addr[5] ); |
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78 DEBUG1S( "core_scan_list_c::update_entry() - and with SSID ", |
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79 ssid.length, &ssid.ssid[0] ); |
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80 |
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81 core_scan_list_entry_s* iter = scan_list_m.first(); |
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82 while( iter ) |
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83 { |
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84 bool_t is_goto_next_entry( true_t ); |
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85 |
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86 if ( iter->ap_data->bssid() == bssid ) |
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87 { |
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88 if ( iter->ap_data->ssid() == ssid ) |
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89 { |
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90 if ( !is_match_found ) |
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91 { |
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92 if ( !iter->tags && iter->ap_data->rcpi() >= ap_data.rcpi() ) |
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93 { |
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94 if ( ap_data.frame()->type() == core_frame_dot11_c::core_dot11_type_beacon ) |
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95 { |
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96 DEBUG2( "core_scan_list_c::update_entry() - an entry with matching BSSID and SSID (age %u, RCPI %u) already received, ignoring beacon entry", |
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97 static_cast<u32_t>( timestamp - iter->timestamp ) / SECONDS_FROM_MICROSECONDS, iter->ap_data->rcpi() ); |
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98 } |
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99 else |
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100 { |
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101 DEBUG2( "core_scan_list_c::update_entry() - an entry with matching BSSID and SSID (age %u, RCPI %u) already received, ignoring probe entry", |
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102 static_cast<u32_t>( timestamp - iter->timestamp ) / SECONDS_FROM_MICROSECONDS, iter->ap_data->rcpi() ); |
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103 } |
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104 |
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105 is_match_found = true_t; |
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106 } |
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107 else |
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108 { |
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109 if ( ap_data.frame()->type() == core_frame_dot11_c::core_dot11_type_beacon ) |
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110 { |
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111 DEBUG2( "core_scan_list_c::update_entry() - an entry with matching BSSID and SSID (age %u, RCPI %u) found, replacing entry with a beacon entry", |
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112 static_cast<u32_t>( timestamp - iter->timestamp ) / SECONDS_FROM_MICROSECONDS, iter->ap_data->rcpi() ); |
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113 } |
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114 else |
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115 { |
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116 DEBUG2( "core_scan_list_c::update_entry() - an entry with matching BSSID and SSID (age %u, RCPI %u) found, replacing entry with a probe entry", |
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117 static_cast<u32_t>( timestamp - iter->timestamp ) / SECONDS_FROM_MICROSECONDS, iter->ap_data->rcpi() ); |
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118 } |
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119 |
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120 is_match_found = true_t; |
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121 |
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122 *(iter->ap_data) = ap_data; |
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123 iter->timestamp = timestamp; |
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124 iter->tags = 0; |
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125 } |
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126 } |
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127 else |
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128 { |
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129 DEBUG( "core_scan_list_c::update_entry() - an entry with matching BSSID and SSID found (duplicate), removing entry" ); |
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130 |
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131 core_scan_list_entry_s* temp = iter; |
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132 iter = scan_list_m.next(); |
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133 scan_list_m.remove( temp ); |
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134 |
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135 is_goto_next_entry = false_t; |
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136 } |
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137 } |
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138 else if ( iter->ap_data->frame()->type() == core_frame_dot11_c::core_dot11_type_beacon && |
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139 ap_data.frame()->type() == core_frame_dot11_c::core_dot11_type_beacon ) |
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140 { |
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141 /** |
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142 * If both the new entry and the old entry are beacons with different SSIDs, |
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143 * it means the SSID has changed and the old entry needs to be replaced or |
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144 * removed. |
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145 */ |
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146 if ( !is_match_found ) |
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147 { |
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148 DEBUG( "core_scan_list_c::update_entry() - two beacons with the same BSSID but different SSID found, replacing entry" ); |
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149 is_match_found = true_t; |
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150 |
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151 *(iter->ap_data) = ap_data; |
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152 iter->timestamp = timestamp; |
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153 iter->tags = 0; |
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154 } |
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155 else |
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156 { |
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157 DEBUG( "core_scan_list_c::update_entry() - two beacons with the same BSSID but different SSID found (duplicate), removing entry" ); |
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158 |
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159 core_scan_list_entry_s* temp = iter; |
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160 iter = scan_list_m.next(); |
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161 scan_list_m.remove( temp ); |
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162 |
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163 is_goto_next_entry = false_t; |
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164 } |
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165 } |
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166 #if 0 |
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167 else |
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168 { |
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169 DEBUG( "core_scan_list_c::update_entry() - an entry with matching BSSID found but SSID doesn't match, refreshing entry timestamp" ); |
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170 iter->timestamp = timestamp; |
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171 } |
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172 #endif // 0 |
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173 } |
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174 |
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175 if ( is_goto_next_entry ) |
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176 { |
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177 iter = scan_list_m.next(); |
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178 } |
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179 } |
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180 |
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181 if ( !is_match_found ) |
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182 { |
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183 if ( ap_data.frame()->type() == core_frame_dot11_c::core_dot11_type_beacon ) |
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184 { |
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185 DEBUG( "core_scan_list_c::update_entry() - no entry matching BSSID and SSID found, adding a new beacon entry" ); |
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186 } |
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187 else |
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188 { |
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189 DEBUG( "core_scan_list_c::update_entry() - no entry matching BSSID and SSID found, adding a new probe entry" ); |
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190 } |
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191 |
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192 core_scan_list_entry_s* entry = new core_scan_list_entry_s; |
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193 if ( entry ) |
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194 { |
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195 entry->ap_data = core_ap_data_c::instance( ap_data ); |
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196 entry->timestamp = timestamp; |
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197 entry->tags = 0; |
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198 |
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199 scan_list_m.append( entry ); |
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200 } |
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201 } |
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202 |
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203 return core_error_ok; |
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204 } |
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205 |
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206 // --------------------------------------------------------------------------- |
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207 // --------------------------------------------------------------------------- |
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208 // |
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209 void core_scan_list_c::remove_entries_by_bssid( |
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210 const core_mac_address_s& bssid ) |
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211 { |
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212 DEBUG6( "core_scan_list_c::remove_entries_by_bssid() - removing entries with BSSID %02X:%02X:%02X:%02X:%02X:%02X", |
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213 bssid.addr[0], bssid.addr[1], bssid.addr[2], |
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214 bssid.addr[3], bssid.addr[4], bssid.addr[5] ); |
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215 |
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216 core_type_list_iterator_c<core_scan_list_entry_s> iter( scan_list_m ); |
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217 for( core_scan_list_entry_s* current = iter.first(); current; current = iter.next() ) |
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218 { |
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219 if ( current->ap_data->bssid() == bssid ) |
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220 { |
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221 DEBUG( "core_scan_list_c::remove_entries_by_bssid() - matching entry found" ); |
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222 |
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223 iter.remove(); |
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224 |
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225 delete current->ap_data; |
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226 delete current; |
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227 current = NULL; |
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228 } |
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229 } |
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230 } |
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231 |
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232 // --------------------------------------------------------------------------- |
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233 // --------------------------------------------------------------------------- |
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234 // |
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235 void core_scan_list_c::remove_entries_by_age( |
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236 u32_t age ) |
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237 { |
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238 DEBUG1( "core_scan_list_c::remove_entries_by_age() - removing entries older than %u microsecond(s)", |
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239 age ); |
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240 |
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241 u64_t timestamp( |
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242 core_am_tools_c::timestamp() ); |
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243 |
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244 core_type_list_iterator_c<core_scan_list_entry_s> iter( scan_list_m ); |
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245 for( core_scan_list_entry_s* current = iter.first(); current; current = iter.next() ) |
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246 { |
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247 if ( static_cast<u32_t>( timestamp - current->timestamp ) > age ) |
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248 { |
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249 #ifdef _DEBUG |
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250 core_mac_address_s bssid( |
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251 current->ap_data->bssid() ); |
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252 |
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253 DEBUG7( "core_scan_list_c::remove_entries_by_age() - BSSID %02X:%02X:%02X:%02X:%02X:%02X [%u second(s)] removed", |
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254 bssid.addr[0], bssid.addr[1], bssid.addr[2], |
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255 bssid.addr[3], bssid.addr[4], bssid.addr[5], |
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256 static_cast<u32_t>( timestamp - current->timestamp ) / SECONDS_FROM_MICROSECONDS ); |
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257 #endif // _DEBUG |
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258 |
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259 iter.remove(); |
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260 |
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261 delete current->ap_data; |
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262 delete current; |
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263 current = NULL; |
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264 } |
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265 } |
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266 } |
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267 |
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268 // --------------------------------------------------------------------------- |
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269 // --------------------------------------------------------------------------- |
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270 // |
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271 void core_scan_list_c::set_tag( |
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272 u8_t tag ) |
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273 { |
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274 for( core_scan_list_entry_s* iter = scan_list_m.first(); iter; iter = scan_list_m.next() ) |
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275 { |
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276 iter->tags |= tag; |
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277 } |
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278 } |
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279 |
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280 // --------------------------------------------------------------------------- |
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281 // --------------------------------------------------------------------------- |
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282 // |
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283 void core_scan_list_c::clear_tag( |
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284 u8_t tag ) |
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285 { |
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286 for( core_scan_list_entry_s* iter = scan_list_m.first(); iter; iter = scan_list_m.next() ) |
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287 { |
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288 iter->tags &= ~tag; |
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289 } |
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290 } |
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291 |
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292 // --------------------------------------------------------------------------- |
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293 // --------------------------------------------------------------------------- |
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294 // |
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295 void core_scan_list_c::clear_all_tags() |
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296 { |
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297 for( core_scan_list_entry_s* iter = scan_list_m.first(); iter; iter = scan_list_m.next() ) |
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298 { |
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299 iter->tags = 0; |
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300 } |
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301 } |
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302 |
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303 // --------------------------------------------------------------------------- |
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304 // --------------------------------------------------------------------------- |
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305 // |
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306 void core_scan_list_c::print_contents() |
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307 { |
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308 u32_t size( sizeof( *this ) ); |
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309 u64_t timestamp = core_am_tools_c::timestamp(); |
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310 |
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311 for( core_scan_list_entry_s* iter = scan_list_m.first(); iter; iter = scan_list_m.next() ) |
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312 { |
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313 const core_mac_address_s bssid( |
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314 iter->ap_data->bssid() ); |
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315 core_ssid_s ssid( |
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316 iter->ap_data->ssid() ); |
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317 |
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318 DEBUG6( "core_scan_list_c::print_contents() - BSSID %02X:%02X:%02X:%02X:%02X:%02X", |
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319 bssid.addr[0], bssid.addr[1], bssid.addr[2], |
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320 bssid.addr[3], bssid.addr[4], bssid.addr[5] ); |
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321 DEBUG1S( "core_scan_list_c::print_contents() - SSID ", |
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322 ssid.length, &ssid.ssid[0] ); |
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323 DEBUG1( "core_scan_list_c::print_contents() - age %u second(s)", |
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324 static_cast<u32_t>( timestamp - iter->timestamp ) / SECONDS_FROM_MICROSECONDS ); |
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325 DEBUG1( "core_scan_list_c::print_contents() - tags 0x%02X", |
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326 iter->tags ); |
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327 |
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328 DEBUG( "core_scan_list_c::print_contents()" ); |
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329 |
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330 size += sizeof( *iter ) + sizeof( *iter->ap_data ) + |
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331 sizeof( *iter->ap_data->frame() ) + iter->ap_data->frame()->data_length(); |
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332 } |
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333 |
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334 DEBUG2( "core_scan_list_c::print_contents() - total size for scan list is %u bytes with %u AP(s)", |
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335 size, count() ); |
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336 } |
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337 |
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338 // --------------------------------------------------------------------------- |
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339 // --------------------------------------------------------------------------- |
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340 // |
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341 void core_scan_list_c::get_channels_by_ssid( |
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342 core_scan_channels_c& channels, |
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343 const core_ssid_s& ssid ) |
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344 { |
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345 DEBUG( "core_scan_list_c::get_channels_by_ssid()" ); |
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346 |
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347 core_type_list_iterator_c<core_scan_list_entry_s> iter( scan_list_m ); |
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348 for( core_scan_list_entry_s* current = iter.first(); current; current = iter.next() ) |
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349 { |
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350 if ( current->ap_data->ssid() == ssid ) |
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351 { |
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352 channels.add( |
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353 current->ap_data->band(), |
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354 current->ap_data->channel() ); |
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355 } |
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356 } |
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357 |
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358 DEBUG2( "core_scan_list_c::get_channels_by_ssid() - channels 0x%02X%02X", |
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359 channels.channels().channels2dot4ghz[1], |
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360 channels.channels().channels2dot4ghz[0] ); |
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361 } |