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comparison Orthanc/Uuid.cpp @ 0:02f7a0400a91

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 25 Feb 2015 13:45:35 +0100
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-1:000000000000 0:02f7a0400a91
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2015 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 "PrecompiledHeaders.h"
34 #include "Uuid.h"
35
36 // http://stackoverflow.com/a/1626302
37
38 extern "C"
39 {
40 #ifdef WIN32
41 #include <rpc.h>
42 #else
43 #include <uuid/uuid.h>
44 #endif
45 }
46
47 #include <boost/filesystem.hpp>
48
49 namespace Orthanc
50 {
51 namespace Toolbox
52 {
53 std::string GenerateUuid()
54 {
55 #ifdef WIN32
56 UUID uuid;
57 UuidCreate ( &uuid );
58
59 unsigned char * str;
60 UuidToStringA ( &uuid, &str );
61
62 std::string s( ( char* ) str );
63
64 RpcStringFreeA ( &str );
65 #else
66 uuid_t uuid;
67 uuid_generate_random ( uuid );
68 char s[37];
69 uuid_unparse ( uuid, s );
70 #endif
71 return s;
72 }
73
74
75 bool IsUuid(const std::string& str)
76 {
77 if (str.size() != 36)
78 {
79 return false;
80 }
81
82 for (size_t i = 0; i < str.length(); i++)
83 {
84 if (i == 8 || i == 13 || i == 18 || i == 23)
85 {
86 if (str[i] != '-')
87 return false;
88 }
89 else
90 {
91 if (!isalnum(str[i]))
92 return false;
93 }
94 }
95
96 return true;
97 }
98
99
100 bool StartsWithUuid(const std::string& str)
101 {
102 if (str.size() < 36)
103 {
104 return false;
105 }
106
107 if (str.size() == 36)
108 {
109 return IsUuid(str);
110 }
111
112 assert(str.size() > 36);
113 if (!isspace(str[36]))
114 {
115 return false;
116 }
117
118 return IsUuid(str.substr(0, 36));
119 }
120
121
122 static std::string CreateTemporaryPath(const char* extension)
123 {
124 #if BOOST_HAS_FILESYSTEM_V3 == 1
125 boost::filesystem::path tmpDir = boost::filesystem::temp_directory_path();
126 #elif defined(__linux__)
127 boost::filesystem::path tmpDir("/tmp");
128 #else
129 #error Support your platform here
130 #endif
131
132 // We use UUID to create unique path to temporary files
133 std::string filename = "Orthanc-" + Orthanc::Toolbox::GenerateUuid();
134
135 if (extension != NULL)
136 {
137 filename.append(extension);
138 }
139
140 tmpDir /= filename;
141 return tmpDir.string();
142 }
143
144
145 TemporaryFile::TemporaryFile() :
146 path_(CreateTemporaryPath(NULL))
147 {
148 }
149
150
151 TemporaryFile::TemporaryFile(const char* extension) :
152 path_(CreateTemporaryPath(extension))
153 {
154 }
155
156
157 TemporaryFile::~TemporaryFile()
158 {
159 boost::filesystem::remove(path_);
160 }
161 }
162 }