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 | * TODO LICENSE INFORMATION GOES HERE |
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5 | */ |
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6 | |
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7 | /* TODO DESCRIPTION OF FILE. |
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8 | * |
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9 | * This file is a temporary demo of a policy engine using some of our socket |
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10 | * communication functions. This is *not* an actual implementation of our |
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11 | * defined PolicyEngine class. |
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12 | */ |
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13 | |
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14 | |
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15 | #include <cstdlib> |
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16 | #include <cstring> |
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17 | #include <netdb.h> |
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18 | #include <netinet/in.h> |
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19 | #include <stdint.h> |
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20 | #include <sys/types.h> |
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21 | #include <sys/socket.h> |
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22 | |
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23 | #include "vtcross/common.h" |
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24 | #include "vtcross/containers.h" |
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25 | #include "vtcross/socket_comm.h" |
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26 | |
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27 | |
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28 | #define CR_PORT 30002 |
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29 | |
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30 | |
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31 | int32_t |
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32 | ValidateTransmissionParameters(struct Parameter pList[], \ |
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33 | struct CE_Info *ce_info, int decision_array[]) |
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34 | { |
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35 | LOG("Policy Engine:: Policies Validated.\n"); |
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36 | for (size_t i = 0; i < ce_info->numParameters; i++) |
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37 | decision_array[i] = 1; |
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38 | |
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39 | return 1; |
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40 | } |
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41 | |
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42 | |
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43 | int32_t |
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44 | RegisterPE(int32_t socketFD) |
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45 | { |
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46 | SendMessage(socketFD, "p_register"); |
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47 | LOG("Policy Engine:: Registration message sent.\n"); |
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48 | return 1; |
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49 | } |
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50 | |
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51 | |
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52 | int32_t |
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53 | SendCEDecision(int32_t socketFD, struct Parameter pList[], \ |
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54 | struct CE_Info *ce_info, int32_t decision_array[]) |
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55 | { |
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56 | char var[50]; |
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57 | |
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58 | for (size_t i = 0; i < ce_info->numParameters; i++) { |
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59 | sprintf(var, "%i", decision_array[i]); |
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60 | SendMessage(socketFD, var); |
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61 | } |
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62 | |
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63 | return 1; |
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64 | } |
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65 | |
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66 | |
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67 | int32_t |
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68 | ParsePolicies() |
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69 | { |
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70 | |
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71 | LOG("Policy Engine:: Policies parsed.\n"); |
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72 | return 1; |
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73 | } |
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74 | |
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75 | |
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76 | int32_t |
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77 | main(int32_t argc, char *argv[]) |
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78 | { |
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79 | if(argc < 3) |
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80 | ERROR(1, "Usage: %s hostname port\n", argv[0]); |
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81 | |
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82 | int32_t decision_array[10]; |
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83 | struct Parameter pList[10]; |
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84 | struct CE_Info ce_info; |
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85 | int32_t ret = 0; |
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86 | |
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87 | int32_t socketFD = ClientSocket(argv[1], argv[2]); |
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88 | |
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89 | LOG("Policy Engine:: Parsing local policies.\n"); |
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90 | ParsePolicies(); |
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91 | |
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92 | RegisterPE(socketFD); |
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93 | |
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94 | while(1) { |
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95 | LOG("Policy Engine:: Waiting for Policy Check Request.\n"); |
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96 | ret = GetRequest(socketFD, pList, &ce_info); |
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97 | |
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98 | if(ret == 1) { |
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99 | LOG("Policy Engine:: Validating Transmission Parameters.\n"); |
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100 | ValidateTransmissionParameters(pList, &ce_info, decision_array); |
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101 | |
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102 | LOG("Policy Engine:: Sending Policy decision to Server.\n"); |
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103 | SendCEDecision(socketFD, pList, &ce_info, decision_array); |
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104 | } |
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105 | } |
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106 | |
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107 | return 0; |
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108 | } |
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