--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancFramework/Sources/HttpServer/HttpToolbox.cpp	Wed Jun 10 20:30:34 2020 +0200
@@ -0,0 +1,298 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2020 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "../PrecompiledHeaders.h"
+#include "HttpToolbox.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <iostream>
+
+#include "HttpOutput.h"
+#include "StringHttpOutput.h"
+
+
+static const char* LOCALHOST = "127.0.0.1";
+
+
+
+namespace Orthanc
+{
+  static void SplitGETNameValue(IHttpHandler::GetArguments& result,
+                                const char* start,
+                                const char* end)
+  {
+    std::string name, value;
+    
+    const char* equal = strchr(start, '=');
+    if (equal == NULL || equal >= end)
+    {
+      name = std::string(start, end - start);
+      //value = "";
+    }
+    else
+    {
+      name = std::string(start, equal - start);
+      value = std::string(equal + 1, end);
+    }
+
+    Toolbox::UrlDecode(name);
+    Toolbox::UrlDecode(value);
+
+    result.push_back(std::make_pair(name, value));
+  }
+
+
+  void HttpToolbox::ParseGetArguments(IHttpHandler::GetArguments& result, 
+                                      const char* query)
+  {
+    const char* pos = query;
+
+    while (pos != NULL)
+    {
+      const char* ampersand = strchr(pos, '&');
+      if (ampersand)
+      {
+        SplitGETNameValue(result, pos, ampersand);
+        pos = ampersand + 1;
+      }
+      else
+      {
+        // No more ampersand, this is the last argument
+        SplitGETNameValue(result, pos, pos + strlen(pos));
+        pos = NULL;
+      }
+    }
+  }
+
+
+  void  HttpToolbox::ParseGetQuery(UriComponents& uri,
+                                   IHttpHandler::GetArguments& getArguments, 
+                                   const char* query)
+  {
+    const char *questionMark = ::strchr(query, '?');
+    if (questionMark == NULL)
+    {
+      // No question mark in the string
+      Toolbox::SplitUriComponents(uri, query);
+      getArguments.clear();
+    }
+    else
+    {
+      Toolbox::SplitUriComponents(uri, std::string(query, questionMark));
+      HttpToolbox::ParseGetArguments(getArguments, questionMark + 1);
+    }    
+  }
+
+ 
+  std::string HttpToolbox::GetArgument(const IHttpHandler::Arguments& getArguments,
+                                       const std::string& name,
+                                       const std::string& defaultValue)
+  {
+    IHttpHandler::Arguments::const_iterator it = getArguments.find(name);
+    if (it == getArguments.end())
+    {
+      return defaultValue;
+    }
+    else
+    {
+      return it->second;
+    }
+  }
+
+
+  std::string HttpToolbox::GetArgument(const IHttpHandler::GetArguments& getArguments,
+                                       const std::string& name,
+                                       const std::string& defaultValue)
+  {
+    for (size_t i = 0; i < getArguments.size(); i++)
+    {
+      if (getArguments[i].first == name)
+      {
+        return getArguments[i].second;
+      }
+    }
+
+    return defaultValue;
+  }
+
+
+
+  void HttpToolbox::ParseCookies(IHttpHandler::Arguments& result, 
+                                 const IHttpHandler::Arguments& httpHeaders)
+  {
+    result.clear();
+
+    IHttpHandler::Arguments::const_iterator it = httpHeaders.find("cookie");
+    if (it != httpHeaders.end())
+    {
+      const std::string& cookies = it->second;
+
+      size_t pos = 0;
+      while (pos != std::string::npos)
+      {
+        size_t nextSemicolon = cookies.find(";", pos);
+        std::string cookie;
+
+        if (nextSemicolon == std::string::npos)
+        {
+          cookie = cookies.substr(pos);
+          pos = std::string::npos;
+        }
+        else
+        {
+          cookie = cookies.substr(pos, nextSemicolon - pos);
+          pos = nextSemicolon + 1;
+        }
+
+        size_t equal = cookie.find("=");
+        if (equal != std::string::npos)
+        {
+          std::string name = Toolbox::StripSpaces(cookie.substr(0, equal));
+          std::string value = Toolbox::StripSpaces(cookie.substr(equal + 1));
+          result[name] = value;
+        }
+      }
+    }
+  }
+
+
+  void HttpToolbox::CompileGetArguments(IHttpHandler::Arguments& compiled,
+                                        const IHttpHandler::GetArguments& source)
+  {
+    compiled.clear();
+
+    for (size_t i = 0; i < source.size(); i++)
+    {
+      compiled[source[i].first] = source[i].second;
+    }
+  }
+
+
+  bool HttpToolbox::SimpleGet(std::string& result,
+                              IHttpHandler& handler,
+                              RequestOrigin origin,
+                              const std::string& uri,
+                              const IHttpHandler::Arguments& httpHeaders)
+  {
+    UriComponents curi;
+    IHttpHandler::GetArguments getArguments;
+    ParseGetQuery(curi, getArguments, uri.c_str());
+
+    StringHttpOutput stream;
+    HttpOutput http(stream, false /* no keep alive */);
+
+    if (handler.Handle(http, origin, LOCALHOST, "", HttpMethod_Get, curi, 
+                       httpHeaders, getArguments, NULL /* no body for GET */, 0))
+    {
+      stream.GetOutput(result);
+      return true;
+    }
+    else
+    {
+      return false;
+    }
+  }
+
+
+  static bool SimplePostOrPut(std::string& result,
+                              IHttpHandler& handler,
+                              RequestOrigin origin,
+                              HttpMethod method,
+                              const std::string& uri,
+                              const void* bodyData,
+                              size_t bodySize,
+                              const IHttpHandler::Arguments& httpHeaders)
+  {
+    IHttpHandler::GetArguments getArguments;  // No GET argument for POST/PUT
+
+    UriComponents curi;
+    Toolbox::SplitUriComponents(curi, uri);
+
+    StringHttpOutput stream;
+    HttpOutput http(stream, false /* no keep alive */);
+
+    if (handler.Handle(http, origin, LOCALHOST, "", method, curi, 
+                       httpHeaders, getArguments, bodyData, bodySize))
+    {
+      stream.GetOutput(result);
+      return true;
+    }
+    else
+    {
+      return false;
+    }
+  }
+
+
+  bool HttpToolbox::SimplePost(std::string& result,
+                               IHttpHandler& handler,
+                               RequestOrigin origin,
+                               const std::string& uri,
+                               const void* bodyData,
+                               size_t bodySize,
+                               const IHttpHandler::Arguments& httpHeaders)
+  {
+    return SimplePostOrPut(result, handler, origin, HttpMethod_Post, uri, bodyData, bodySize, httpHeaders);
+  }
+
+
+  bool HttpToolbox::SimplePut(std::string& result,
+                              IHttpHandler& handler,
+                              RequestOrigin origin,
+                              const std::string& uri,
+                              const void* bodyData,
+                              size_t bodySize,
+                              const IHttpHandler::Arguments& httpHeaders)
+  {
+    return SimplePostOrPut(result, handler, origin, HttpMethod_Put, uri, bodyData, bodySize, httpHeaders);
+  }
+
+
+  bool HttpToolbox::SimpleDelete(IHttpHandler& handler,
+                                 RequestOrigin origin,
+                                 const std::string& uri,
+                                 const IHttpHandler::Arguments& httpHeaders)
+  {
+    UriComponents curi;
+    Toolbox::SplitUriComponents(curi, uri);
+
+    IHttpHandler::GetArguments getArguments;  // No GET argument for DELETE
+
+    StringHttpOutput stream;
+    HttpOutput http(stream, false /* no keep alive */);
+
+    return handler.Handle(http, origin, LOCALHOST, "", HttpMethod_Delete, curi, 
+                          httpHeaders, getArguments, NULL /* no body for DELETE */, 0);
+  }
+}