1 | unit uEventHooks;
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2 |
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3 | interface
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4 |
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5 | uses SysUtils, Classes, Windows, Dialogs, Forms, ComObj, ActiveX,
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6 | CPRSChart_TLB, ORNet, ORFn, uCore;
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7 |
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8 | type
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9 | TCPRSExtensionData = record
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10 | Data1: string;
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11 | Data2: string;
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12 | end;
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13 |
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14 | procedure RegisterCPRSTypeLibrary;
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15 | procedure ProcessPatientChangeEventHook;
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16 | function ProcessOrderAcceptEventHook(OrderID: string; DisplayGroup: integer): boolean;
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17 | procedure GetCOMObjectText(COMObject: integer; const Param2, Param3: string;
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18 | var Data1, Data2: string);
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19 | function COMObjectOK(COMObject: integer): boolean;
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20 | function COMObjectActive: boolean;
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21 |
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22 | implementation
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23 |
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24 | uses
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25 | Trpcb, rEventHooks;
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26 |
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27 | type
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28 | ICPRSBrokerInitializer = interface(ICPRSBroker)
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29 | procedure Initialize;
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30 | end;
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31 |
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32 | TCPRSBroker = class(TAutoIntfObject, ICPRSBrokerInitializer)
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33 | private
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34 | FContext: string;
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35 | FRPCVersion: string;
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36 | FClearParameters: boolean;
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37 | FClearResults: boolean;
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38 | FResults: string;
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39 | FParam: TParams;
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40 | FEmptyParams: TParams;
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41 | public
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42 | constructor Create;
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43 | destructor Destroy; override;
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44 | procedure Initialize;
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45 | function SetContext(const Context: WideString): WordBool; safecall;
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46 | function Server: WideString; safecall;
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47 | function Port: Integer; safecall;
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48 | function DebugMode: WordBool; safecall;
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49 | function Get_RPCVersion: WideString; safecall;
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50 | procedure Set_RPCVersion(const Value: WideString); safecall;
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51 | function Get_ClearParameters: WordBool; safecall;
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52 | procedure Set_ClearParameters(Value: WordBool); safecall;
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53 | function Get_ClearResults: WordBool; safecall;
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54 | procedure Set_ClearResults(Value: WordBool); safecall;
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55 | procedure CallRPC(const RPCName: WideString); safecall;
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56 | function Get_Results: WideString; safecall;
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57 | procedure Set_Results(const Value: WideString); safecall;
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58 | function Get_Param(Index: Integer): WideString; safecall;
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59 | procedure Set_Param(Index: Integer; const Value: WideString); safecall;
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60 | function Get_ParamType(Index: Integer): BrokerParamType; safecall;
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61 | procedure Set_ParamType(Index: Integer; Value: BrokerParamType); safecall;
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62 | function Get_ParamList(Index: Integer; const Node: WideString): WideString; safecall;
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63 | procedure Set_ParamList(Index: Integer; const Node: WideString; const Value: WideString); safecall;
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64 | function ParamCount: Integer; safecall;
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65 | function ParamListCount(Index: Integer): Integer; safecall;
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66 | property RPCVersion: WideString read Get_RPCVersion write Set_RPCVersion;
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67 | property ClearParameters: WordBool read Get_ClearParameters write Set_ClearParameters;
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68 | property ClearResults: WordBool read Get_ClearResults write Set_ClearResults;
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69 | property Results: WideString read Get_Results write Set_Results;
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70 | property Param[Index: Integer]: WideString read Get_Param write Set_Param;
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71 | property ParamType[Index: Integer]: BrokerParamType read Get_ParamType write Set_ParamType;
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72 | property ParamList[Index: Integer; const Node: WideString]: WideString read Get_ParamList write Set_ParamList;
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73 | end;
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74 |
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75 | TCPRSState = class(TAutoIntfObject, ICPRSState)
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76 | private
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77 | FHandle: string;
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78 | public
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79 | constructor Create;
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80 | function Handle: WideString; safecall;
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81 | function UserDUZ: WideString; safecall;
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82 | function UserName: WideString; safecall;
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83 | function PatientDFN: WideString; safecall;
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84 | function PatientName: WideString; safecall;
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85 | function PatientDOB: WideString; safecall;
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86 | function PatientSSN: WideString; safecall;
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87 | function LocationIEN: Integer; safecall;
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88 | function LocationName: WideString; safecall;
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89 | end;
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90 |
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91 | TCPRSEventHookManager = class(TObject)
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92 | private
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93 | FCPRSBroker: ICPRSBrokerInitializer;
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94 | FCPRSState: ICPRSState;
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95 | FErrors: TStringList;
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96 | FLock: TRTLCriticalSection;
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97 | public
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98 | constructor Create;
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99 | destructor Destroy; override;
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100 | function ProcessComObject(const GUIDString: string;
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101 | const AParam2, AParam3: string;
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102 | var Data1, Data2: WideString): boolean;
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103 | procedure EnterCriticalSection;
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104 | procedure LeaveCriticalSection;
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105 | end;
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106 |
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107 |
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108 | var
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109 | uCPRSEventHookManager: TCPRSEventHookManager = nil;
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110 | uCOMObjectActive: boolean = False;
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111 |
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112 | procedure EnsureEventHookObjects;
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113 | begin
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114 | if not assigned(uCPRSEventHookManager) then
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115 | uCPRSEventHookManager := TCPRSEventHookManager.Create;
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116 | end;
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117 |
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118 | { TCPRSBroker }
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119 |
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120 | constructor TCPRSBroker.Create;
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121 | var
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122 | CPRSLib: ITypeLib;
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123 |
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124 | begin
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125 | FParam := TParams.Create(nil);
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126 | FEmptyParams := TParams.Create(nil);
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127 | OleCheck(LoadRegTypeLib(LIBID_CPRSChart, 1, 0, 0, CPRSLib));
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128 | inherited Create(CPRSLib, ICPRSBroker);
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129 | EnsureBroker;
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130 | end;
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131 |
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132 | procedure TCPRSBroker.CallRPC(const RPCName: WideString);
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133 | var
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134 | err: boolean;
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135 | tmpRPCVersion: string;
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136 | tmpClearParameters: boolean;
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137 | tmpClearResults: boolean;
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138 | tmpResults: string;
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139 | tmpParam: TParams;
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140 |
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141 | begin
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142 | EnsureEventHookObjects;
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143 | uCPRSEventHookManager.EnterCriticalSection;
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144 | try
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145 | err := (FContext = '');
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146 | if(not err) then
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147 | err := not UpdateContext(FContext);
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148 | if (not err) then
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149 | err := IsBaseContext;
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150 | if err then
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151 | raise EOleException.Create('Invalid Broker Context', OLE_E_FIRST, Application.ExeName ,'', 0)
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152 | else
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153 | begin
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154 | if RPCName <> '' then
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155 | begin
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156 | tmpRPCVersion := RPCBrokerV.RpcVersion;
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157 | tmpClearParameters := RPCBrokerV.ClearParameters;
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158 | tmpClearResults := RPCBrokerV.ClearResults;
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159 | tmpResults := RPCBrokerV.Results.Text;
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160 | tmpParam := TParams.Create(nil);
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161 | try
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162 | RPCBrokerV.RemoteProcedure := RPCName;
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163 | RPCBrokerV.RpcVersion := FRPCVersion;
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164 | RPCBrokerV.ClearParameters := FClearParameters;
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165 | RPCBrokerV.ClearResults := FClearResults;
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166 | RPCBrokerV.Param.Assign(FParam);
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167 | CallBrokerInContext;
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168 | FParam.Assign(RPCBrokerV.Param);
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169 | FResults := RPCBrokerV.Results.Text;
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170 | finally
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171 | RPCBrokerV.RpcVersion := tmpRPCVersion;
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172 | RPCBrokerV.ClearParameters := tmpClearParameters;
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173 | RPCBrokerV.ClearResults := tmpClearResults;
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174 | RPCBrokerV.Results.Text := tmpResults;
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175 | RPCBrokerV.Param.Assign(tmpParam);
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176 | tmpParam.Free;
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177 | end;
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178 | end
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179 | else
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180 | begin
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181 | RPCBrokerV.Results.Clear;
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182 | FResults := '';
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183 | end;
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184 | end;
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185 | finally
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186 | uCPRSEventHookManager.LeaveCriticalSection;
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187 | end;
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188 | end;
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189 |
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190 | function TCPRSBroker.DebugMode: WordBool;
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191 | begin
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192 | Result := RPCBrokerV.DebugMode;
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193 | end;
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194 |
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195 | function TCPRSBroker.Get_ClearParameters: WordBool;
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196 | begin
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197 | Result := FClearParameters;
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198 | end;
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199 |
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200 | function TCPRSBroker.Get_ClearResults: WordBool;
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201 | begin
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202 | Result := FClearResults;
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203 | end;
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204 |
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205 | function TCPRSBroker.Get_Param(Index: Integer): WideString;
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206 | begin
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207 | Result := FParam[Index].Value;
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208 | end;
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209 |
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210 | function TCPRSBroker.Get_ParamList(Index: Integer;
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211 | const Node: WideString): WideString;
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212 | begin
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213 | Result := FParam[Index].Mult[Node];
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214 | end;
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215 |
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216 | function TCPRSBroker.Get_ParamType(Index: Integer): BrokerParamType;
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217 | begin
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218 | case FParam[Index].PType of
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219 | literal: Result := bptLiteral;
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220 | reference: Result := bptReference;
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221 | list: Result := bptList;
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222 | else Result := bptUndefined;
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223 | end;
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224 | end;
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225 |
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226 | function TCPRSBroker.Get_Results: WideString;
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227 | begin
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228 | Result := FResults;
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229 | end;
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230 |
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231 | function TCPRSBroker.Get_RPCVersion: WideString;
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232 | begin
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233 | Result := FRPCVersion;
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234 | end;
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235 |
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236 | function TCPRSBroker.ParamCount: Integer;
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237 | begin
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238 | Result := FParam.Count;
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239 | end;
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240 |
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241 | function TCPRSBroker.ParamListCount(Index: Integer): Integer;
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242 | begin
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243 | Result := FParam[Index].Mult.Count;
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244 | end;
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245 |
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246 | function TCPRSBroker.Port: Integer;
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247 | begin
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248 | Result := RPCBrokerV.ListenerPort;
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249 | end;
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250 |
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251 | function TCPRSBroker.Server: WideString;
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252 | begin
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253 | Result := RPCBrokerV.Server;
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254 | end;
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255 |
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256 | procedure TCPRSBroker.Set_ClearParameters(Value: WordBool);
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257 | begin
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258 | FClearParameters := Value;
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259 | end;
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260 |
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261 | procedure TCPRSBroker.Set_ClearResults(Value: WordBool);
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262 | begin
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263 | FClearResults := Value;
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264 | end;
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265 |
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266 | procedure TCPRSBroker.Set_Param(Index: Integer; const Value: WideString);
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267 | begin
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268 | FParam[Index].Value := Value;
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269 | end;
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270 |
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271 | procedure TCPRSBroker.Set_ParamList(Index: Integer; const Node,
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272 | Value: WideString);
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273 | begin
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274 | FParam[Index].Mult[Node] := Value;
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275 | end;
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276 |
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277 | procedure TCPRSBroker.Set_ParamType(Index: Integer;
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278 | Value: BrokerParamType);
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279 | begin
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280 | case Value of
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281 | bptLiteral: FParam[Index].PType := literal;
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282 | bptReference: FParam[Index].PType := reference;
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283 | bptList: FParam[Index].PType := list;
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284 | else FParam[Index].PType := undefined;
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285 | end;
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286 | end;
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287 |
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288 | procedure TCPRSBroker.Set_Results(const Value: WideString);
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289 | begin
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290 | FResults := Value;
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291 | end;
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292 |
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293 | procedure TCPRSBroker.Set_RPCVersion(const Value: WideString);
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294 | begin
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295 | FRPCVersion := Value;
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296 | end;
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297 |
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298 | function TCPRSBroker.SetContext(const Context: WideString): WordBool;
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299 | begin
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300 | FContext := Context;
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301 | Result := UpdateContext(FContext);
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302 | end;
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303 |
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304 | procedure TCPRSBroker.Initialize;
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305 | begin
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306 | FContext := '';
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307 | FRPCVersion := RPCBrokerV.RpcVersion;
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308 | FClearParameters := RPCBrokerV.ClearParameters;
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309 | FClearResults := RPCBrokerV.ClearResults;
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310 | FResults := '';
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311 | FParam.Assign(FEmptyParams);
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312 | end;
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313 |
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314 | destructor TCPRSBroker.Destroy;
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315 | begin
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316 | FParam.Free;
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317 | FEmptyParams.Free;
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318 | inherited;
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319 | end;
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320 |
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321 | { TCPRSState }
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322 |
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323 | constructor TCPRSState.Create;
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324 | var
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325 | CPRSLib: ITypeLib;
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326 |
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327 | begin
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328 | OleCheck(LoadRegTypeLib(LIBID_CPRSChart, 1, 0, 0, CPRSLib));
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329 | inherited Create(CPRSLib, ICPRSState);
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330 | FHandle := DottedIPStr + 'x' + IntToHex(Application.Handle,8);
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331 | end;
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332 |
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333 | function TCPRSState.Handle: WideString;
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334 | begin
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335 | Result := FHandle;
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336 | end;
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337 |
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338 | function TCPRSState.LocationIEN: Integer;
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339 | begin
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340 | Result := Encounter.Location;
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341 | end;
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342 |
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343 | function TCPRSState.LocationName: WideString;
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344 | begin
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345 | Result := Encounter.LocationName;
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346 | end;
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347 |
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348 | function TCPRSState.PatientDFN: WideString;
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349 | begin
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350 | Result := Patient.DFN;
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351 | end;
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352 |
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353 | function TCPRSState.PatientDOB: WideString;
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354 | begin
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355 | Result := FormatFMDateTime('mm/dd/yyyy', Patient.DOB);
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356 | end;
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357 |
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358 | function TCPRSState.PatientName: WideString;
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359 | begin
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360 | Result := Patient.Name;
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361 | end;
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362 |
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363 | function TCPRSState.PatientSSN: WideString;
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364 | begin
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365 | Result := Patient.SSN;
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366 | end;
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367 |
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368 | function TCPRSState.UserDUZ: WideString;
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369 | begin
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370 | Result := IntToStr(User.DUZ);
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371 | end;
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372 |
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373 | function TCPRSState.UserName: WideString;
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374 | begin
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375 | Result := User.Name;
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376 | end;
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377 |
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378 | { TCPRSEventHookManager }
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379 |
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380 | constructor TCPRSEventHookManager.Create;
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381 | begin
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382 | inherited;
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383 | FCPRSBroker := TCPRSBroker.Create;
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384 | FCPRSState := TCPRSState.Create;
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385 | end;
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386 |
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387 | destructor TCPRSEventHookManager.Destroy;
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388 | begin
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389 | FCPRSState := nil;
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390 | FCPRSBroker := nil;
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391 | if assigned(FErrors) then
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392 | FErrors.Free;
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393 | inherited;
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394 | end;
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395 |
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396 | procedure TCPRSEventHookManager.EnterCriticalSection;
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397 | begin
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398 | Windows.EnterCriticalSection(FLock);
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399 | end;
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400 |
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401 | procedure TCPRSEventHookManager.LeaveCriticalSection;
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402 | begin
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403 | Windows.LeaveCriticalSection(FLock);
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404 | end;
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405 |
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406 | function TCPRSEventHookManager.ProcessComObject(const GUIDString: string;
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407 | const AParam2, AParam3: string;
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408 | var Data1, Data2: WideString): boolean;
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409 | var
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410 | ObjIEN, ObjName, ObjGUIDStr, err, AParam1: string;
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411 | ObjGUID: TGUID;
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412 | ObjIntf: IUnknown;
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413 | Obj: ICPRSExtension;
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414 |
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415 | begin
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416 | Result := FALSE;
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417 | ObjIEN := Piece(GUIDString,U,1);
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418 | if assigned(FErrors) and (FErrors.IndexOf(ObjIEN) >= 0) then exit;
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419 | ObjName := Piece(GUIDString,U,2);
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420 | ObjGUIDStr := Piece(GUIDString,U,3);
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421 | if (ObjGUIDStr <> '') then
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422 | begin
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423 | try
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424 | ObjGUID := StringToGUID(ObjGUIDStr);
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425 | try
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426 | ObjIntf := CreateComObject(ObjGUID);
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427 | if assigned(ObjIntf) then
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428 | begin
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429 | try
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430 | ObjIntf.QueryInterface(IID_ICPRSExtension, Obj);
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431 | if assigned(Obj) then
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432 | begin
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433 | AParam1 := Piece(GUIDString,U,5);
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434 | InitializeCriticalSection(FLock);
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435 | try
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436 | FCPRSBroker.Initialize;
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437 | uCOMObjectActive := True;
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438 | Result := Obj.Execute(FCPRSBroker, FCPRSState,
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439 | AParam1, AParam2, AParam3, Data1, Data2);
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440 | finally
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441 | DeleteCriticalSection(FLock);
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442 | uCOMObjectActive := False;
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443 | end;
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444 | end
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445 | else
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446 | err := 'COM Object ' + ObjName + ' does not support ICPRSExtension';
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447 | except
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448 | err := 'Error executing ' + ObjName;
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449 | end;
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450 | end;
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451 | except
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452 | err := 'COM Object ' + ObjName + ' not found on this workstation.';
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453 | end;
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454 | except
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455 | err := 'COM Object ' + ObjName + ' has an invalid GUID' + CRLF + ObjGUIDStr;
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456 | end;
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457 | if err <> '' then
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458 | begin
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459 | if not assigned(FErrors) then
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460 | FErrors := TStringList.Create;
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461 | if FErrors.IndexOf(ObjIEN) < 0 then
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462 | FErrors.Add(ObjIEN);
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463 | ShowMessage(err);
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464 | end;
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465 | end;
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466 | end;
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467 |
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468 | procedure FreeEventHookObjects;
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469 | begin
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470 | FreeAndNil(uCPRSEventHookManager);
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471 | end;
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472 |
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473 | // External Calls
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474 |
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475 | procedure RegisterCPRSTypeLibrary;
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476 | type
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477 | TUnregisterProc = function(const GUID: TGUID; VerMajor, VerMinor: Word;
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478 | LCID: TLCID; SysKind: TSysKind): HResult stdcall;
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479 |
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480 | var
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481 | Unregister: boolean;
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482 | CPRSLib: ITypeLib;
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483 | DoHalt: boolean;
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484 | ModuleName: string;
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485 | HelpPath: WideString;
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486 | Buffer: array[0..261] of Char;
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487 | Handle: THandle;
|
---|
488 | UnregisterProc: TUnregisterProc;
|
---|
489 | LibAttr: PTLibAttr;
|
---|
490 |
|
---|
491 | begin
|
---|
492 | DoHalt := TRUE;
|
---|
493 | if FindCmdLineSwitch('UNREGSERVER', ['-', '/'], True) then
|
---|
494 | Unregister := TRUE
|
---|
495 | else
|
---|
496 | begin
|
---|
497 | Unregister := FALSE;
|
---|
498 | if not FindCmdLineSwitch('REGSERVER', ['-', '/'], True) then
|
---|
499 | DoHalt := FALSE;
|
---|
500 | end;
|
---|
501 |
|
---|
502 | try
|
---|
503 | SetString(ModuleName, Buffer, Windows.GetModuleFileName(HInstance, Buffer, SizeOf(Buffer)));
|
---|
504 | if ModuleName <> '' then
|
---|
505 | begin
|
---|
506 | OleCheck(LoadTypeLib(PWideChar(WideString(ModuleName)), CPRSLib)); // will register if needed
|
---|
507 | if assigned(CPRSLib) then
|
---|
508 | begin
|
---|
509 | if Unregister then
|
---|
510 | begin
|
---|
511 | Handle := GetModuleHandle('OLEAUT32.DLL');
|
---|
512 | if Handle <> 0 then
|
---|
513 | begin
|
---|
514 | @UnregisterProc := GetProcAddress(Handle, 'UnRegisterTypeLib');
|
---|
515 | if @UnregisterProc <> nil then
|
---|
516 | begin
|
---|
517 | OleCheck(CPRSLib.GetLibAttr(LibAttr));
|
---|
518 | try
|
---|
519 | with LibAttr^ do
|
---|
520 | UnregisterProc(guid, wMajorVerNum, wMinorVerNum, lcid, syskind);
|
---|
521 | finally
|
---|
522 | CPRSLib.ReleaseTLibAttr(LibAttr);
|
---|
523 | end;
|
---|
524 | end;
|
---|
525 | end;
|
---|
526 | end
|
---|
527 | else
|
---|
528 | begin
|
---|
529 | HelpPath := ExtractFilePath(ModuleName);
|
---|
530 | OleCheck(RegisterTypeLib(CPRSLib, PWideChar(WideString(ModuleName)), PWideChar(HelpPath)));
|
---|
531 | end;
|
---|
532 | end;
|
---|
533 | end;
|
---|
534 | except
|
---|
535 | // ignore any errors
|
---|
536 | end;
|
---|
537 | if DoHalt then Halt;
|
---|
538 | end;
|
---|
539 |
|
---|
540 | procedure ProcessPatientChangeEventHook;
|
---|
541 | var
|
---|
542 | d1, d2: WideString;
|
---|
543 | COMObj: string;
|
---|
544 |
|
---|
545 | begin
|
---|
546 | COMObj := GetPatientChangeGUIDs;
|
---|
547 | if(COMObj <> '') and (COMObj <> '0') then
|
---|
548 | begin
|
---|
549 | EnsureEventHookObjects;
|
---|
550 | d1 := '';
|
---|
551 | d2 := '';
|
---|
552 | uCPRSEventHookManager.ProcessComObject(COMObj, 'P=' + Patient.DFN, '', d1, d2);
|
---|
553 | end;
|
---|
554 | end;
|
---|
555 |
|
---|
556 | function ProcessOrderAcceptEventHook(OrderID: string; DisplayGroup: integer): boolean;
|
---|
557 | var
|
---|
558 | d1, d2: WideString;
|
---|
559 | COMObj: string;
|
---|
560 |
|
---|
561 | begin
|
---|
562 | Result := False;
|
---|
563 | COMObj := GetOrderAcceptGUIDs(DisplayGroup);
|
---|
564 | if(COMObj <> '') and (COMObj <> '0') then
|
---|
565 | begin
|
---|
566 | EnsureEventHookObjects;
|
---|
567 | d1 := '';
|
---|
568 | d2 := '';
|
---|
569 | //Result will be set to True by Com object if the order is deleted by LES
|
---|
570 | Result := uCPRSEventHookManager.ProcessComObject(COMObj, 'O=' + OrderID, '', d1, d2);
|
---|
571 | end;
|
---|
572 | end;
|
---|
573 |
|
---|
574 | procedure GetCOMObjectText(COMObject: integer; const Param2, Param3: string;
|
---|
575 | var Data1, Data2: string);
|
---|
576 | var
|
---|
577 | d1, d2: WideString;
|
---|
578 | COMObj: string;
|
---|
579 |
|
---|
580 | begin
|
---|
581 | if COMObject > 0 then
|
---|
582 | begin
|
---|
583 | COMObj := GetCOMObjectDetails(COMObject);
|
---|
584 | if(COMObj <> '') and (COMObj <> '0') then
|
---|
585 | begin
|
---|
586 | EnsureEventHookObjects;
|
---|
587 | d1 := Data1;
|
---|
588 | d2 := Data2;
|
---|
589 | if uCPRSEventHookManager.ProcessComObject(COMObj, Param2, Param3, d1, d2) then
|
---|
590 | begin
|
---|
591 | Data1 := d1;
|
---|
592 | Data2 := d2;
|
---|
593 | end;
|
---|
594 | end;
|
---|
595 | end;
|
---|
596 | end;
|
---|
597 |
|
---|
598 | function COMObjectOK(COMObject: integer): boolean;
|
---|
599 | begin
|
---|
600 | if assigned(uCPRSEventHookManager) and assigned(uCPRSEventHookManager.FErrors) then
|
---|
601 | Result := (uCPRSEventHookManager.FErrors.IndexOf(IntToStr(COMObject)) < 0)
|
---|
602 | else
|
---|
603 | Result := TRUE;
|
---|
604 | end;
|
---|
605 |
|
---|
606 | function COMObjectActive: boolean;
|
---|
607 | begin
|
---|
608 | Result := uCOMObjectActive;
|
---|
609 | end;
|
---|
610 |
|
---|
611 | initialization
|
---|
612 |
|
---|
613 | finalization
|
---|
614 | FreeEventHookObjects;
|
---|
615 |
|
---|
616 | end.
|
---|