--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancFramework/Sources/HttpClient.h	Wed Jun 10 20:30:34 2020 +0200
@@ -0,0 +1,341 @@
+/**
+ * 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/>.
+ **/
+
+
+#pragma once
+
+#include "Enumerations.h"
+#include "OrthancFramework.h"
+#include "WebServiceParameters.h"
+
+#include <string>
+#include <boost/noncopyable.hpp>
+#include <boost/shared_ptr.hpp>
+#include <json/json.h>
+
+#if !defined(ORTHANC_ENABLE_CURL)
+#  error The macro ORTHANC_ENABLE_CURL must be defined
+#endif
+
+#if ORTHANC_ENABLE_CURL != 1
+#  error Support for curl is disabled, cannot use this file
+#endif
+
+#if !defined(ORTHANC_ENABLE_SSL)
+#  error The macro ORTHANC_ENABLE_SSL must be defined
+#endif
+
+#if !defined(ORTHANC_ENABLE_PKCS11)
+#  error The macro ORTHANC_ENABLE_PKCS11 must be defined
+#endif
+
+
+namespace Orthanc
+{
+  class ORTHANC_PUBLIC HttpClient : public boost::noncopyable
+  {
+  public:
+    typedef std::map<std::string, std::string>  HttpHeaders;
+
+    class IRequestBody : public boost::noncopyable
+    {
+    public:
+      virtual ~IRequestBody()
+      {
+      }
+      
+      virtual bool ReadNextChunk(std::string& chunk) = 0;
+    };
+
+    class IAnswer : public boost::noncopyable
+    {
+    public:
+      virtual ~IAnswer()
+      {
+      }
+
+      virtual void AddHeader(const std::string& key,
+                             const std::string& value) = 0;
+      
+      virtual void AddChunk(const void* data,
+                            size_t size) = 0;
+    };
+
+  private:
+    class CurlHeaders;
+    class CurlRequestBody;
+    class CurlAnswer;
+    class DefaultAnswer;
+    class GlobalParameters;
+
+    struct PImpl;
+    boost::shared_ptr<PImpl> pimpl_;
+
+    std::string url_;
+    std::string credentials_;
+    HttpMethod method_;
+    HttpStatus lastStatus_;
+    std::string body_;  // This only makes sense for POST and PUT requests
+    bool isVerbose_;
+    long timeout_;
+    std::string proxy_;
+    bool verifyPeers_;
+    std::string caCertificates_;
+    std::string clientCertificateFile_;
+    std::string clientCertificateKeyFile_;
+    std::string clientCertificateKeyPassword_;
+    bool pkcs11Enabled_;
+    bool headersToLowerCase_;
+    bool redirectionFollowed_;
+
+    void Setup();
+
+    void operator= (const HttpClient&);  // Assignment forbidden
+    HttpClient(const HttpClient& base);  // Copy forbidden
+
+    bool ApplyInternal(CurlAnswer& answer);
+
+    bool ApplyInternal(std::string& answerBody,
+                       HttpHeaders* answerHeaders);
+
+    bool ApplyInternal(Json::Value& answerBody,
+                       HttpHeaders* answerHeaders);
+
+  public:
+    HttpClient();
+
+    HttpClient(const WebServiceParameters& service,
+               const std::string& uri);
+
+    ~HttpClient();
+
+    void SetUrl(const char* url)
+    {
+      url_ = std::string(url);
+    }
+
+    void SetUrl(const std::string& url)
+    {
+      url_ = url;
+    }
+
+    const std::string& GetUrl() const
+    {
+      return url_;
+    }
+
+    void SetMethod(HttpMethod method)
+    {
+      method_ = method;
+    }
+
+    HttpMethod GetMethod() const
+    {
+      return method_;
+    }
+
+    void SetTimeout(long seconds)
+    {
+      timeout_ = seconds;
+    }
+
+    long GetTimeout() const
+    {
+      return timeout_;
+    }
+
+    void SetBody(const std::string& data);
+
+    std::string& GetBody()
+    {
+      return body_;
+    }
+
+    const std::string& GetBody() const
+    {
+      return body_;
+    }
+
+    void SetBody(IRequestBody& body);
+
+    void ClearBody();
+
+    void SetVerbose(bool isVerbose);
+
+    bool IsVerbose() const
+    {
+      return isVerbose_;
+    }
+
+    void AddHeader(const std::string& key,
+                   const std::string& value);
+
+    void ClearHeaders();
+
+    bool Apply(IAnswer& answer);
+
+    bool Apply(std::string& answerBody)
+    {
+      return ApplyInternal(answerBody, NULL);
+    }
+
+    bool Apply(Json::Value& answerBody)
+    {
+      return ApplyInternal(answerBody, NULL);
+    }
+
+    bool Apply(std::string& answerBody,
+               HttpHeaders& answerHeaders)
+    {
+      return ApplyInternal(answerBody, &answerHeaders);
+    }
+
+    bool Apply(Json::Value& answerBody,
+               HttpHeaders& answerHeaders)
+    {
+      return ApplyInternal(answerBody, &answerHeaders);
+    }
+
+    HttpStatus GetLastStatus() const
+    {
+      return lastStatus_;
+    }
+
+    void SetCredentials(const char* username,
+                        const char* password);
+
+    void SetProxy(const std::string& proxy)
+    {
+      proxy_ = proxy;
+    }
+
+    void SetHttpsVerifyPeers(bool verify)
+    {
+      verifyPeers_ = verify;
+    }
+
+    bool IsHttpsVerifyPeers() const
+    {
+      return verifyPeers_;
+    }
+
+    void SetHttpsCACertificates(const std::string& certificates)
+    {
+      caCertificates_ = certificates;
+    }
+
+    const std::string& GetHttpsCACertificates() const
+    {
+      return caCertificates_;
+    }
+
+    void SetClientCertificate(const std::string& certificateFile,
+                              const std::string& certificateKeyFile,
+                              const std::string& certificateKeyPassword);
+
+    void SetPkcs11Enabled(bool enabled)
+    {
+      pkcs11Enabled_ = enabled;
+    }
+
+    bool IsPkcs11Enabled() const
+    {
+      return pkcs11Enabled_;
+    }
+
+    const std::string& GetClientCertificateFile() const
+    {
+      return clientCertificateFile_;
+    }
+
+    const std::string& GetClientCertificateKeyFile() const
+    {
+      return clientCertificateKeyFile_;
+    }
+
+    const std::string& GetClientCertificateKeyPassword() const
+    {
+      return clientCertificateKeyPassword_;
+    }
+
+    void SetConvertHeadersToLowerCase(bool lowerCase)
+    {
+      headersToLowerCase_ = lowerCase;
+    }
+
+    bool IsConvertHeadersToLowerCase() const
+    {
+      return headersToLowerCase_;
+    }
+
+    void SetRedirectionFollowed(bool follow)
+    {
+      redirectionFollowed_ = follow;
+    }
+
+    bool IsRedirectionFollowed() const
+    {
+      return redirectionFollowed_;
+    }
+
+    static void GlobalInitialize();
+  
+    static void GlobalFinalize();
+
+    static void InitializePkcs11(const std::string& module,
+                                 const std::string& pin,
+                                 bool verbose);
+
+    static void ConfigureSsl(bool httpsVerifyPeers,
+                             const std::string& httpsCACertificates);
+
+    static void SetDefaultVerbose(bool verbose);
+
+    static void SetDefaultProxy(const std::string& proxy);
+
+    static void SetDefaultTimeout(long timeout);
+
+    void ApplyAndThrowException(IAnswer& answer);
+
+    void ApplyAndThrowException(std::string& answerBody);
+
+    void ApplyAndThrowException(Json::Value& answerBody);
+
+    void ApplyAndThrowException(std::string& answerBody,
+                                HttpHeaders& answerHeaders);
+
+    void ApplyAndThrowException(Json::Value& answerBody,
+                                HttpHeaders& answerHeaders);
+
+    static void ThrowException(HttpStatus status);
+  };
+}