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1 /**
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2 * Palantir - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege,
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4 * Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * This program is distributed in the hope that it will be useful, but
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU General Public License
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 **/
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19
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20
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21 #include "StoreScp.h"
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22
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23 #include "../FromDcmtkBridge.h"
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24 #include "../ToDcmtkBridge.h"
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25 #include "../../Core/PalantirException.h"
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26
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27 #include <dcmtk/dcmdata/dcfilefo.h>
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28 #include <dcmtk/dcmdata/dcmetinf.h>
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29 #include <dcmtk/dcmdata/dcostrmb.h>
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30 #include <dcmtk/dcmdata/dcdeftag.h>
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31 #include <dcmtk/dcmnet/diutil.h>
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32
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33
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34 namespace Palantir
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35 {
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36 namespace Internals
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37 {
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38 extern OFLogger Logger;
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39 }
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40
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41
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42 namespace
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43 {
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44 struct StoreCallbackData
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45 {
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46 IStoreRequestHandler* handler;
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47 const char* distantAET;
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48 const char* modality;
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49 const char* affectedSOPInstanceUID;
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50 uint32_t messageID;
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51 };
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52
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53
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54 static int SaveToMemoryBuffer(DcmDataset* dataSet,
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55 std::vector<uint8_t>& buffer)
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56 {
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57 // Determine the transfer syntax which shall be used to write the
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58 // information to the file. We always switch to the Little Endian
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59 // syntax, with explicit length.
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60
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61 // http://support.dcmtk.org/docs/dcxfer_8h-source.html
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62 E_TransferSyntax xfer = EXS_LittleEndianExplicit;
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63 E_EncodingType encodingType = /*opt_sequenceType*/ EET_ExplicitLength;
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64
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65 uint32_t s = dataSet->getLength(xfer, encodingType);
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66
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67 buffer.resize(s);
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68 DcmOutputBufferStream ob(&buffer[0], s);
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69
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70 dataSet->transferInit();
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71 OFCondition c = dataSet->write(ob, xfer, encodingType, NULL,
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72 /*opt_groupLength*/ EGL_recalcGL,
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73 /*opt_paddingType*/ EPD_withoutPadding);
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74 dataSet->transferEnd();
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75 if (c.good())
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76 {
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77 return 0;
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78 }
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79 else
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80 {
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81 buffer.clear();
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82 return -1;
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83 }
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84
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85 #if 0
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86 OFCondition cond = cbdata->dcmff->saveFile(fileName.c_str(), xfer,
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87 encodingType,
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88 /*opt_groupLength*/ EGL_recalcGL,
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89 /*opt_paddingType*/ EPD_withoutPadding,
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90 OFstatic_cast(Uint32, /*opt_filepad*/ 0),
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91 OFstatic_cast(Uint32, /*opt_itempad*/ 0),
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92 (opt_useMetaheader) ? EWM_fileformat : EWM_dataset);
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93 #endif
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94 }
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95
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96
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97 static void
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98 storeScpCallback(
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99 void *callbackData,
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100 T_DIMSE_StoreProgress *progress,
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101 T_DIMSE_C_StoreRQ *req,
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102 char * /*imageFileName*/, DcmDataset **imageDataSet,
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103 T_DIMSE_C_StoreRSP *rsp,
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104 DcmDataset **statusDetail)
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105 /*
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106 * This function.is used to indicate progress when storescp receives instance data over the
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107 * network. On the final call to this function (identified by progress->state == DIMSE_StoreEnd)
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108 * this function will store the data set which was received over the network to a file.
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109 * Earlier calls to this function will simply cause some information to be dumped to stdout.
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110 *
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111 * Parameters:
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112 * callbackData - [in] data for this callback function
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113 * progress - [in] The state of progress. (identifies if this is the initial or final call
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114 * to this function, or a call in between these two calls.
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115 * req - [in] The original store request message.
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116 * imageFileName - [in] The path to and name of the file the information shall be written to.
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117 * imageDataSet - [in] The data set which shall be stored in the image file
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118 * rsp - [inout] the C-STORE-RSP message (will be sent after the call to this function)
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119 * statusDetail - [inout] This variable can be used to capture detailed information with regard to
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120 * the status information which is captured in the status element (0000,0900). Note
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121 * that this function does specify any such information, the pointer will be set to NULL.
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122 */
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123 {
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124 StoreCallbackData *cbdata = OFstatic_cast(StoreCallbackData *, callbackData);
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125
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126 DIC_UI sopClass;
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127 DIC_UI sopInstance;
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128
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129 // if this is the final call of this function, save the data which was received to a file
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130 // (note that we could also save the image somewhere else, put it in database, etc.)
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131 if (progress->state == DIMSE_StoreEnd)
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132 {
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133 OFString tmpStr;
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134
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135 // do not send status detail information
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136 *statusDetail = NULL;
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137
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138 // Concerning the following line: an appropriate status code is already set in the resp structure,
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139 // it need not be success. For example, if the caller has already detected an out of resources problem
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140 // then the status will reflect this. The callback function is still called to allow cleanup.
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141 //rsp->DimseStatus = STATUS_Success;
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142
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143 // we want to write the received information to a file only if this information
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144 // is present and the options opt_bitPreserving and opt_ignore are not set.
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145 if ((imageDataSet != NULL) && (*imageDataSet != NULL))
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146 {
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147 DicomMap summary;
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148 Json::Value dicomJson;
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149 std::vector<uint8_t> buffer;
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150
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151 try
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152 {
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153 FromDcmtkBridge::Convert(summary, **imageDataSet);
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154 FromDcmtkBridge::ToJson(dicomJson, **imageDataSet);
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155
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156 if (SaveToMemoryBuffer(*imageDataSet, buffer) < 0)
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157 {
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158 OFLOG_ERROR(Internals::Logger, "cannot write DICOM file to memory");
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159 rsp->DimseStatus = STATUS_STORE_Refused_OutOfResources;
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160 }
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161 }
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162 catch (...)
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163 {
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164 rsp->DimseStatus = STATUS_STORE_Refused_OutOfResources;
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165 }
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166
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167 // check the image to make sure it is consistent, i.e. that its sopClass and sopInstance correspond
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168 // to those mentioned in the request. If not, set the status in the response message variable.
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169 if ((rsp->DimseStatus == STATUS_Success))
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170 {
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171 // which SOP class and SOP instance ?
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172 if (!DU_findSOPClassAndInstanceInDataSet(*imageDataSet, sopClass, sopInstance, /*opt_correctUIDPadding*/ OFFalse))
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173 {
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174 //OFLOG_ERROR(Internals::Logger, "bad DICOM file: " << fileName);
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175 rsp->DimseStatus = STATUS_STORE_Error_CannotUnderstand;
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176 }
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177 else if (strcmp(sopClass, req->AffectedSOPClassUID) != 0)
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178 {
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179 rsp->DimseStatus = STATUS_STORE_Error_DataSetDoesNotMatchSOPClass;
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180 }
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181 else if (strcmp(sopInstance, req->AffectedSOPInstanceUID) != 0)
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182 {
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183 rsp->DimseStatus = STATUS_STORE_Error_DataSetDoesNotMatchSOPClass;
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184 }
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185 else
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186 {
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187 try
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188 {
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189 cbdata->handler->Handle(buffer, summary, dicomJson, cbdata->distantAET);
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190 }
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191 catch (PalantirException& e)
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192 {
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193 rsp->DimseStatus = STATUS_STORE_Refused_OutOfResources;
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194 OFLOG_ERROR(Internals::Logger, "Exception while storing DICOM: " << e.What());
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195 }
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196 }
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197 }
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198 }
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199 }
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200 }
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201 }
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202
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203 /*
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204 * This function processes a DIMSE C-STORE-RQ commmand that was
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205 * received over the network connection.
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206 *
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207 * Parameters:
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208 * assoc - [in] The association (network connection to another DICOM application).
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209 * msg - [in] The DIMSE C-STORE-RQ message that was received.
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210 * presID - [in] The ID of the presentation context which was specified in the PDV which contained
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211 * the DIMSE command.
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212 */
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213 OFCondition Internals::storeScp(T_ASC_Association * assoc,
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214 T_DIMSE_Message * msg,
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215 T_ASC_PresentationContextID presID,
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216 IStoreRequestHandler& handler)
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217 {
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218 OFCondition cond = EC_Normal;
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219 T_DIMSE_C_StoreRQ *req;
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220
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221 // assign the actual information of the C-STORE-RQ command to a local variable
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222 req = &msg->msg.CStoreRQ;
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223
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224 // intialize some variables
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225 StoreCallbackData callbackData;
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226 callbackData.handler = &handler;
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227 callbackData.modality = dcmSOPClassUIDToModality(req->AffectedSOPClassUID, "UNKNOWN");
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228 callbackData.affectedSOPInstanceUID = req->AffectedSOPInstanceUID;
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229 callbackData.messageID = req->MessageID;
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230 if (assoc && assoc->params)
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231 {
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232 callbackData.distantAET = assoc->params->DULparams.callingAPTitle;
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233 }
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234 else
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235 {
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236 callbackData.distantAET = "";
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237 }
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238
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239 DcmFileFormat dcmff;
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240
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241 // store SourceApplicationEntityTitle in metaheader
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242 if (assoc && assoc->params)
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243 {
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244 const char *aet = assoc->params->DULparams.callingAPTitle;
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245 if (aet) dcmff.getMetaInfo()->putAndInsertString(DCM_SourceApplicationEntityTitle, aet);
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246 }
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247
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248 // define an address where the information which will be received over the network will be stored
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249 DcmDataset *dset = dcmff.getDataset();
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250
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251 cond = DIMSE_storeProvider(assoc, presID, req, NULL, /*opt_useMetaheader*/OFFalse, &dset,
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252 storeScpCallback, &callbackData,
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253 /*opt_blockMode*/ DIMSE_BLOCKING,
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254 /*opt_dimse_timeout*/ 0);
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255
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256 // if some error occured, dump corresponding information and remove the outfile if necessary
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257 if (cond.bad())
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258 {
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259 OFString temp_str;
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260 OFLOG_ERROR(Logger, "Store SCP Failed: " << DimseCondition::dump(temp_str, cond));
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261 }
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262
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263 // return return value
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264 return cond;
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265 }
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266 }
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