1 | /* Virginia Tech Cognitive Radio Open Source Systems |
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2 | * Virginia Tech, 2009 |
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3 | * |
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4 | * LICENSE INFORMATION GOES HERE |
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5 | */ |
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6 | |
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7 | /* DESCRIPTION OF FILE. |
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8 | */ |
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9 | |
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10 | |
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11 | #include <cstdlib> |
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12 | #include <cstring> |
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13 | #include <stdint.h> |
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14 | |
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15 | #include "vtcross/common.h" |
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16 | #include "vtcross/components.h" |
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17 | #include "vtcross/containers.h" |
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18 | #include "vtcross/debug.h" |
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19 | #include "vtcross/error.h" |
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20 | #include "vtcross/socketcomm.h" |
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21 | |
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22 | |
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23 | PolicyEngine::PolicyEngine() |
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24 | { |
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25 | LOG("Creating Policy Engine.\n"); |
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26 | SML = NULL; |
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27 | LoadPolicies(); |
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28 | } |
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29 | |
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30 | |
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31 | PolicyEngine::~PolicyEngine() |
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32 | { |
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33 | if(SML) |
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34 | delete SML; |
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35 | } |
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36 | |
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37 | |
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38 | PolicyEngine::PolicyEngine(const char* serverName, const char* portNumber) |
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39 | { |
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40 | LOG("Creating Policy Engine.\n"); |
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41 | |
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42 | SML = new SML_Info; |
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43 | SML->hostname = std::string(serverName); |
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44 | SML->port = std::string(portNumber); |
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45 | |
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46 | SML->socketFD = ClientSocket(serverName, portNumber); |
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47 | RegisterServices(SML->socketFD); |
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48 | |
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49 | LOG("Policy Engine connected to SML at %s.\n", serverName); |
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50 | |
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51 | LoadPolicies(); |
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52 | } |
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53 | |
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54 | |
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55 | void |
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56 | PolicyEngine::GetRemoteComponentType(int32_t socketFD) |
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57 | { |
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58 | } |
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59 | |
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60 | |
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61 | void |
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62 | PolicyEngine::WaitForSignal(int32_t socketFD) |
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63 | { |
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64 | LOG("Policy Engine:: Waiting for Policy Check Request.\n"); |
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65 | |
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66 | int32_t decision_array[10]; |
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67 | struct Parameter pList[10]; |
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68 | struct CE_Info ce_info; |
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69 | |
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70 | // TODO should this be a GetRequest call or something else? |
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71 | if(GetRequest(socketFD, pList, &ce_info)) { |
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72 | LOG("Policy Engine:: Validating Transmission Parameters.\n"); |
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73 | ValidateParameters(pList, &ce_info, decision_array); |
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74 | |
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75 | LOG("Policy Engine:: Sending Policy decision to Server.\n"); |
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76 | SendPEDecision(socketFD, pList, &ce_info, decision_array); |
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77 | } |
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78 | } |
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79 | |
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80 | |
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81 | void |
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82 | PolicyEngine::Shutdown() |
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83 | { |
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84 | if(SML) |
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85 | DeregisterServices(SML->socketFD); |
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86 | // TODO otherwise, deregister from shell |
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87 | } |
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88 | |
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89 | |
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90 | void |
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91 | PolicyEngine::Reset() |
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92 | { |
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93 | } |
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94 | |
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95 | |
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96 | void |
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97 | PolicyEngine::RegisterComponent(int32_t socketFD) |
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98 | { |
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99 | SendMessage(socketFD, "register_engine_policy"); |
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100 | LOG("Policy Engine:: Registration message sent.\n"); |
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101 | |
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102 | } |
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103 | |
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104 | |
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105 | void |
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106 | PolicyEngine::DeregisterComponent(int32_t socketFD) |
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107 | { |
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108 | SendMessage(socketFD, "deregister_engine_policy"); |
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109 | LOG("Policy Engine:: Registration message sent.\n"); |
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110 | } |
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111 | |
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112 | |
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113 | void |
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114 | PolicyEngine::RegisterServices(int32_t socketFD) |
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115 | { |
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116 | LOG("Policy Engine:: Registering services.\n"); |
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117 | SendMessage(socketFD, "register_service_pe_geo"); |
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118 | SendMessage(socketFD, "register_service_pe_time"); |
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119 | SendMessage(socketFD, "register_service_pe_spectrum"); |
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120 | SendMessage(socketFD, "register_service_pe_spacial"); |
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121 | } |
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122 | |
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123 | |
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124 | void |
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125 | PolicyEngine::DeregisterServices(int32_t socketFD) |
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126 | { |
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127 | LOG("Policy Engine:: Deregistering services.\n"); |
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128 | SendMessage(socketFD, "deregister_service_pe_geo"); |
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129 | SendMessage(socketFD, "deregister_service_pe_time"); |
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130 | SendMessage(socketFD, "deregister_service_pe_spectrum"); |
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131 | SendMessage(socketFD, "deregister_service_pe_spacial"); |
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132 | } |
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133 | |
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134 | |
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135 | void |
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136 | PolicyEngine::LoadPolicies() |
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137 | { |
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138 | LOG("PolicyEngine:: Loading policies.\n"); |
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139 | } |
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140 | |
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141 | |
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142 | void |
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143 | PolicyEngine::ReloadPolicies() |
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144 | { |
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145 | LOG("PolicyEngine:: Reloading policies.\n"); |
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146 | } |
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147 | |
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148 | |
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149 | void |
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150 | PolicyEngine::SendPEDecision(int32_t socketFD, struct Parameter pList[], \ |
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151 | struct CE_Info *ce_info, int32_t decision_array[]) |
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152 | { |
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153 | char var[50]; |
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154 | |
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155 | for (size_t i = 0; i < ce_info->numParameters; i++) { |
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156 | sprintf(var, "%i", decision_array[i]); |
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157 | SendMessage(socketFD, var); |
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158 | } |
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159 | } |
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160 | |
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161 | |
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162 | void |
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163 | PolicyEngine::ValidateParameters(struct Parameter pList[], \ |
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164 | struct CE_Info *ce_info, int decision_array[]) |
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165 | { |
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166 | LOG("Policy Engine:: Policies Validated.\n"); |
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167 | for (size_t i = 0; i < ce_info->numParameters; i++) |
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168 | decision_array[i] = 1; |
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169 | } |
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170 | |
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