Mercurial > hg > orthanc-wsi
comparison Resources/Orthanc/Plugins/Engine/SharedLibrary.cpp @ 59:7a3853d51c45
Move "Framework/Orthanc/" as "Resources/Orthanc/"
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 25 Nov 2016 16:34:34 +0100 |
parents | Framework/Orthanc/Plugins/Engine/SharedLibrary.cpp@533cbc4d520c |
children | ff0ef01c332c |
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58:35468714a38e | 59:7a3853d51c45 |
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1 /** | |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * | |
6 * This program is free software: you can redistribute it and/or | |
7 * modify it under the terms of the GNU General Public License as | |
8 * published by the Free Software Foundation, either version 3 of the | |
9 * License, or (at your option) any later version. | |
10 * | |
11 * In addition, as a special exception, the copyright holders of this | |
12 * program give permission to link the code of its release with the | |
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
14 * that use the same license as the "OpenSSL" library), and distribute | |
15 * the linked executables. You must obey the GNU General Public License | |
16 * in all respects for all of the code used other than "OpenSSL". If you | |
17 * modify file(s) with this exception, you may extend this exception to | |
18 * your version of the file(s), but you are not obligated to do so. If | |
19 * you do not wish to do so, delete this exception statement from your | |
20 * version. If you delete this exception statement from all source files | |
21 * in the program, then also delete it here. | |
22 * | |
23 * This program is distributed in the hope that it will be useful, but | |
24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
26 * General Public License for more details. | |
27 * | |
28 * You should have received a copy of the GNU General Public License | |
29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
30 **/ | |
31 | |
32 | |
33 #include "../../OrthancServer/PrecompiledHeadersServer.h" | |
34 #include "SharedLibrary.h" | |
35 | |
36 #if ORTHANC_ENABLE_PLUGINS != 1 | |
37 #error The plugin support is disabled | |
38 #endif | |
39 | |
40 | |
41 #include "../../Core/Logging.h" | |
42 #include "../../Core/Toolbox.h" | |
43 | |
44 #include <boost/filesystem.hpp> | |
45 | |
46 #if defined(_WIN32) | |
47 #include <windows.h> | |
48 #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) | |
49 #include <dlfcn.h> | |
50 #else | |
51 #error Support your platform here | |
52 #endif | |
53 | |
54 namespace Orthanc | |
55 { | |
56 SharedLibrary::SharedLibrary(const std::string& path) : | |
57 path_(path), | |
58 handle_(NULL) | |
59 { | |
60 #if defined(_WIN32) | |
61 handle_ = ::LoadLibraryA(path_.c_str()); | |
62 if (handle_ == NULL) | |
63 { | |
64 LOG(ERROR) << "LoadLibrary(" << path_ << ") failed: Error " << ::GetLastError(); | |
65 throw OrthancException(ErrorCode_SharedLibrary); | |
66 } | |
67 | |
68 #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) | |
69 handle_ = ::dlopen(path_.c_str(), RTLD_NOW); | |
70 if (handle_ == NULL) | |
71 { | |
72 std::string explanation; | |
73 const char *tmp = ::dlerror(); | |
74 if (tmp) | |
75 { | |
76 explanation = ": Error " + std::string(tmp); | |
77 } | |
78 | |
79 LOG(ERROR) << "dlopen(" << path_ << ") failed" << explanation; | |
80 throw OrthancException(ErrorCode_SharedLibrary); | |
81 } | |
82 | |
83 #else | |
84 #error Support your platform here | |
85 #endif | |
86 } | |
87 | |
88 SharedLibrary::~SharedLibrary() | |
89 { | |
90 if (handle_) | |
91 { | |
92 #if defined(_WIN32) | |
93 ::FreeLibrary((HMODULE)handle_); | |
94 #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) | |
95 ::dlclose(handle_); | |
96 #else | |
97 #error Support your platform here | |
98 #endif | |
99 } | |
100 } | |
101 | |
102 | |
103 SharedLibrary::FunctionPointer SharedLibrary::GetFunctionInternal(const std::string& name) | |
104 { | |
105 if (!handle_) | |
106 { | |
107 throw OrthancException(ErrorCode_InternalError); | |
108 } | |
109 | |
110 #if defined(_WIN32) | |
111 return ::GetProcAddress((HMODULE)handle_, name.c_str()); | |
112 #elif defined(__linux__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__FreeBSD_kernel__) || defined(__FreeBSD__) | |
113 return ::dlsym(handle_, name.c_str()); | |
114 #else | |
115 #error Support your platform here | |
116 #endif | |
117 } | |
118 | |
119 | |
120 SharedLibrary::FunctionPointer SharedLibrary::GetFunction(const std::string& name) | |
121 { | |
122 SharedLibrary::FunctionPointer result = GetFunctionInternal(name); | |
123 | |
124 if (result == NULL) | |
125 { | |
126 LOG(ERROR) << "Shared library does not expose function \"" << name << "\""; | |
127 throw OrthancException(ErrorCode_SharedLibrary); | |
128 } | |
129 else | |
130 { | |
131 return result; | |
132 } | |
133 } | |
134 | |
135 | |
136 bool SharedLibrary::HasFunction(const std::string& name) | |
137 { | |
138 return GetFunctionInternal(name) != NULL; | |
139 } | |
140 } |