Mercurial > hg > orthanc-python

annotate Sources/IncomingHttpRequestFilter.cpp @ 84:35ca8c4bdaa0 OrthancPython-3.1

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closing branch OrthancPython-3.1
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 12 Aug 2021 18:39:30 +0200
parents 23f3099bed47
children 0b3ef425db31
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1 /**
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2 * Python plugin for Orthanc
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3 * Copyright (C) 2020-2021 Osimis S.A., Belgium
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4 *
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5 * This program is free software: you can redistribute it and/or
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6 * modify it under the terms of the GNU Affero General Public License
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7 * as published by the Free Software Foundation, either version 3 of
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8 * the License, or (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful, but
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11 * WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 * Affero General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU Affero General Public License
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 **/
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20 #include "IncomingHttpRequestFilter.h"
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22 #include "PythonString.h"
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23 #include "Autogenerated/sdk.h"
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25 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h"
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28 static PyObject* incomingHttpRequestFilter_ = NULL;
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31 static int32_t IncomingHttpRequestFilter(OrthancPluginHttpMethod method,
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32 const char *uri,
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33 const char *ip,
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34 uint32_t headersCount,
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35 const char *const *headersKeys,
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36 const char *const *headersValues,
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37 uint32_t getArgumentsCount,
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38 const char *const *getArgumentsKeys,
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39 const char *const *getArgumentsValues)
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40 {
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41 try
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42 {
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43 PythonLock lock;
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45 PythonObject args(lock, PyTuple_New(1));
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47 {
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48 PythonString str(lock, uri);
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49 PyTuple_SetItem(args.GetPyObject(), 0, str.Release());
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50 }
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52 PythonObject kw(lock, PyDict_New());
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53 PyDict_SetItemString(kw.GetPyObject(), "method", PyLong_FromLong(method));
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55 {
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56 PythonString str(lock, ip);
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57 PyDict_SetItemString(kw.GetPyObject(), "ip", str.Release());
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58 }
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60 {
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61 PythonObject headers(lock, PyDict_New());
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63 for (uint32_t i = 0; i < headersCount; i++)
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64 {
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65 PythonString str(lock, headersValues[i]);
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66 PyDict_SetItemString(headers.GetPyObject(), headersKeys[i], str.Release());
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67 }
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69 PyDict_SetItemString(kw.GetPyObject(), "headers", headers.Release());
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70 }
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72 if (method == OrthancPluginHttpMethod_Get)
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73 {
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74 PythonObject getArguments(lock, PyDict_New());
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76 for (uint32_t i = 0; i < getArgumentsCount; i++)
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77 {
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78 PythonString str(lock, getArgumentsValues[i]);
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79 PyDict_SetItemString(getArguments.GetPyObject(), getArgumentsKeys[i], str.Release());
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80 }
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82 PyDict_SetItemString(kw.GetPyObject(), "get", getArguments.Release());
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83 }
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85 PythonObject result(lock, PyObject_Call(incomingHttpRequestFilter_,
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86 args.GetPyObject(), kw.GetPyObject()));
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87
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88 std::string traceback;
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89 if (lock.HasErrorOccurred(traceback))
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90 {
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91 OrthancPlugins::LogError("Error in the Python incoming-http-request filter, "
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92 "traceback:\n" + traceback);
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93 return -1;
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94 }
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95 else
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96 {
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97 if (PyBool_Check(result.GetPyObject()))
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98 {
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99 return (PyObject_IsTrue(result.GetPyObject()) ? 1 /* allowed */ : 0 /* forbidden */);
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100 }
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101 else
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102 {
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103 OrthancPlugins::LogError("The Python incoming-http-request filter has not returned a Boolean");
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104 return -1;
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105 }
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106 }
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107 }
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108 catch (OrthancPlugins::PluginException& e)
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109 {
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110 OrthancPlugins::LogError("Exception in the Python incoming-http-request filter: " +
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111 std::string(e.What(OrthancPlugins::GetGlobalContext())));
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112 return e.GetErrorCode();
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113 }
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114 }
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117 PyObject* RegisterIncomingHttpRequestFilter(PyObject* module, PyObject* args)
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118 {
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119 // The GIL is locked at this point (no need to create "PythonLock")
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120
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121 // https://docs.python.org/3/extending/extending.html#calling-python-functions-from-c
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122 PyObject* callback = NULL;
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123
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124 if (!PyArg_ParseTuple(args, "O", &callback) ||
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125 callback == NULL)
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126 {
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127 PyErr_SetString(PyExc_ValueError, "Expected a callback function");
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128 return NULL;
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129 }
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130
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131 if (incomingHttpRequestFilter_ != NULL)
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132 {
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133 PyErr_SetString(PyExc_RuntimeError, "Can only register one Python incoming-http-request filter");
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134 return NULL;
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135 }
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136
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137 OrthancPlugins::LogInfo("Registering a Python incoming-http-request filter");
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138
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139 OrthancPluginRegisterIncomingHttpRequestFilter2(
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140 OrthancPlugins::GetGlobalContext(), IncomingHttpRequestFilter);
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141
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142 incomingHttpRequestFilter_ = callback;
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143 Py_XINCREF(incomingHttpRequestFilter_);
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144
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145 Py_INCREF(Py_None);
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146 return Py_None;
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147 }
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148
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149
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150 void FinalizeIncomingHttpRequestFilter()
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151 {
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152 PythonLock lock;
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153
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154 if (incomingHttpRequestFilter_ != NULL)
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155 {
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156 Py_XDECREF(incomingHttpRequestFilter_);
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157 }
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158 }