Mercurial > hg > orthanc-wsi

comparison Framework/Orthanc/Plugins/Engine/SharedLibrary.cpp @ 1:dc730d11b101

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
orthanc dependencies
author Sebastien Jodogne <s.jodogne@gmail.com>
date Sat, 22 Oct 2016 21:50:15 +0200
parents
children 533cbc4d520c
comparison
equal deleted inserted replaced
0:4a7a53257c7d 1:dc730d11b101
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_PLUGINS_ENABLED != 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 }