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comparison OrthancFramework/Sources/TemporaryFile.cpp @ 4044:d25f4c0fa160 framework

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splitting code into OrthancFramework and OrthancServer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 10 Jun 2020 20:30:34 +0200
parents Core/TemporaryFile.cpp@94f4a18a79cc
children bf7b9edf6b81
comparison
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4043:6c6239aec462 4044:d25f4c0fa160
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 * Copyright (C) 2017-2020 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
11 *
12 * In addition, as a special exception, the copyright holders of this
13 * program give permission to link the code of its release with the
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
15 * that use the same license as the "OpenSSL" library), and distribute
16 * the linked executables. You must obey the GNU General Public License
17 * in all respects for all of the code used other than "OpenSSL". If you
18 * modify file(s) with this exception, you may extend this exception to
19 * your version of the file(s), but you are not obligated to do so. If
20 * you do not wish to do so, delete this exception statement from your
21 * version. If you delete this exception statement from all source files
22 * in the program, then also delete it here.
23 *
24 * This program is distributed in the hope that it will be useful, but
25 * WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 * General Public License for more details.
28 *
29 * You should have received a copy of the GNU General Public License
30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
31 **/
32
33
34 #include "PrecompiledHeaders.h"
35 #include "TemporaryFile.h"
36
37 #include "OrthancException.h"
38 #include "SystemToolbox.h"
39 #include "Toolbox.h"
40
41 #include <boost/filesystem.hpp>
42
43 namespace Orthanc
44 {
45 static std::string CreateTemporaryPath(const char* temporaryDirectory,
46 const char* extension)
47 {
48 boost::filesystem::path dir;
49
50 if (temporaryDirectory == NULL)
51 {
52 #if BOOST_HAS_FILESYSTEM_V3 == 1
53 dir = boost::filesystem::temp_directory_path();
54 #elif defined(__linux__)
55 dir = "/tmp";
56 #else
57 # error Support your platform here
58 #endif
59 }
60 else
61 {
62 dir = temporaryDirectory;
63 }
64
65 // We use UUID to create unique path to temporary files
66 const std::string uuid = Orthanc::Toolbox::GenerateUuid();
67
68 // New in Orthanc 1.5.8: Prefix the process ID to the name of the
69 // temporary files, in order to locate orphan temporary files that
70 // were left by instances of Orthanc that exited in non-clean way
71 // https://groups.google.com/d/msg/orthanc-users/MSJX53bw6Lw/d3S3lRRLAwAJ
72 std::string filename = "Orthanc-" + boost::lexical_cast<std::string>(SystemToolbox::GetProcessId()) + "-" + uuid;
73
74 if (extension != NULL)
75 {
76 filename.append(extension);
77 }
78
79 dir /= filename;
80 return dir.string();
81 }
82
83
84 TemporaryFile::TemporaryFile() :
85 path_(CreateTemporaryPath(NULL, NULL))
86 {
87 }
88
89
90 TemporaryFile::TemporaryFile(const std::string& temporaryDirectory,
91 const std::string& extension) :
92 path_(CreateTemporaryPath(temporaryDirectory.c_str(), extension.c_str()))
93 {
94 }
95
96
97 TemporaryFile::~TemporaryFile()
98 {
99 boost::filesystem::remove(path_);
100 }
101
102
103 void TemporaryFile::Write(const std::string& content)
104 {
105 try
106 {
107 SystemToolbox::WriteFile(content, path_);
108 }
109 catch (OrthancException& e)
110 {
111 throw OrthancException(e.GetErrorCode(),
112 "Can't create temporary file \"" + path_ +
113 "\" with " + boost::lexical_cast<std::string>(content.size()) +
114 " bytes: Check you have write access to the "
115 "temporary directory and that it is not full");
116 }
117 }
118
119
120 void TemporaryFile::Read(std::string& content) const
121 {
122 try
123 {
124 SystemToolbox::ReadFile(content, path_);
125 }
126 catch (OrthancException& e)
127 {
128 throw OrthancException(e.GetErrorCode(),
129 "Can't read temporary file \"" + path_ +
130 "\": Another process has corrupted the temporary directory");
131 }
132 }
133
134
135 void TemporaryFile::Touch()
136 {
137 std::string empty;
138 Write(empty);
139 }
140 }