Mercurial > hg > orthanc-authorization
annotate Plugin/MemoryCache.cpp @ 202:3c56c3f0059a default tip
Fix forbidden access when the PatientID and StudyInstanceUID are identical
author | Alain Mazy <am@orthanc.team> |
---|---|
date | Mon, 23 Sep 2024 12:43:33 +0200 |
parents | c4b908970ae4 |
children |
rev | line source |
---|---|
1 | 1 /** |
2 * Advanced authorization plugin for Orthanc | |
68 | 3 * Copyright (C) 2017-2023 Osimis S.A., Belgium |
150 | 4 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium |
188
c4b908970ae4
updated copyright, as Orthanc Team now replaces Osimis
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
150
diff
changeset
|
5 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
1 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU Affero General Public License | |
9 * as published by the Free Software Foundation, either version 3 of | |
10 * the License, or (at your option) any later version. | |
11 * | |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 * Affero General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Affero General Public License | |
18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 **/ | |
20 | |
21 #include "MemoryCache.h" | |
22 | |
23 namespace OrthancPlugins | |
24 { | |
25 class MemoryCache::Payload : public boost::noncopyable | |
26 { | |
27 private: | |
28 bool hasExpiration_; | |
29 boost::posix_time::ptime expiration_; | |
30 std::string value_; | |
31 | |
32 public: | |
33 Payload(const std::string& value, | |
34 unsigned int validity) : | |
35 value_(value) | |
36 { | |
37 if (validity == 0) | |
38 { | |
39 hasExpiration_ = false; | |
40 } | |
41 else | |
42 { | |
43 hasExpiration_ = true; | |
44 expiration_ = (boost::posix_time::second_clock::local_time() + | |
45 boost::posix_time::seconds(validity)); | |
46 } | |
47 } | |
48 | |
49 bool HasExpired() const | |
50 { | |
51 return (hasExpiration_ && | |
52 boost::posix_time::second_clock::local_time() >= expiration_); | |
53 } | |
54 | |
55 bool GetValue(std::string& target) const | |
56 { | |
57 if (HasExpired()) | |
58 { | |
59 return false; | |
60 } | |
61 else | |
62 { | |
63 target = value_; | |
64 return true; | |
65 } | |
66 } | |
67 }; | |
68 | |
69 | |
70 void MemoryCache::RemoveOldest() | |
71 { | |
72 Payload* payload = NULL; | |
73 index_.RemoveOldest(payload); | |
74 assert(payload != NULL); | |
75 delete payload; | |
76 } | |
77 | |
78 | |
79 void MemoryCache::InvalidateInternal(const std::string& key) | |
80 { | |
81 Payload* payload = NULL; | |
82 | |
83 if (index_.Contains(key, payload)) | |
84 { | |
85 assert(payload != NULL); | |
86 delete payload; | |
87 index_.Invalidate(key); | |
88 } | |
89 } | |
90 | |
91 | |
92 MemoryCache::MemoryCache(unsigned int maxSize) : | |
93 maxSize_(maxSize) | |
94 { | |
95 if (maxSize_ == 0) | |
96 { | |
97 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
98 } | |
99 } | |
100 | |
101 | |
102 MemoryCache::~MemoryCache() | |
103 { | |
104 while (!index_.IsEmpty()) | |
105 { | |
106 RemoveOldest(); | |
107 } | |
108 } | |
109 | |
110 | |
111 void MemoryCache::Invalidate(const std::string& key) | |
112 { | |
113 boost::mutex::scoped_lock lock(mutex_); | |
114 InvalidateInternal(key); | |
115 } | |
116 | |
117 | |
118 void MemoryCache::Store(const std::string& key, | |
119 const std::string& value, | |
120 unsigned int expiration /* in seconds */) | |
121 { | |
122 boost::mutex::scoped_lock lock(mutex_); | |
123 | |
124 InvalidateInternal(key); | |
125 | |
126 if (index_.GetSize() == maxSize_) | |
127 { | |
128 // The cache is full: Make some room | |
129 RemoveOldest(); | |
130 } | |
131 | |
132 index_.Add(key, new Payload(value, expiration)); | |
133 } | |
134 | |
135 | |
136 bool MemoryCache::Retrieve(std::string& value, | |
137 const std::string& key) | |
138 { | |
139 boost::mutex::scoped_lock lock(mutex_); | |
140 | |
141 Payload* payload = NULL; | |
142 | |
143 if (!index_.Contains(key, payload)) | |
144 { | |
145 return false; | |
146 } | |
147 | |
148 assert(payload != NULL); | |
149 | |
150 if (payload->GetValue(value)) | |
151 { | |
152 index_.MakeMostRecent(key); | |
153 return true; | |
154 } | |
155 else | |
156 { | |
157 // The value has expired in the cache: Invalidate it | |
158 delete payload; | |
159 index_.Invalidate(key); | |
160 return false; | |
161 } | |
162 } | |
163 } |