|
4355
|
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 Lesser 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 * Lesser General Public License for more details.
|
|
|
16 *
|
|
|
17 * You should have received a copy of the GNU Lesser General Public
|
|
|
18 * License along with this program. If not, see
|
|
|
19 * <http://www.gnu.org/licenses/>.
|
|
|
20 **/
|
|
|
21
|
|
|
22
|
|
|
23 #include "../PrecompiledHeaders.h"
|
|
|
24
|
|
|
25 #ifndef NOMINMAX
|
|
|
26 #define NOMINMAX
|
|
|
27 #endif
|
|
|
28
|
|
|
29 #include "ZipReader.h"
|
|
|
30
|
|
|
31 #include "../OrthancException.h"
|
|
|
32 #include "../../Resources/ThirdParty/minizip/unzip.h"
|
|
|
33
|
|
|
34 #if ORTHANC_SANDBOXED != 1
|
|
|
35 # include "../SystemToolbox.h"
|
|
|
36 #endif
|
|
|
37
|
|
|
38 #include <string.h>
|
|
|
39
|
|
|
40
|
|
|
41 namespace Orthanc
|
|
|
42 {
|
|
|
43 // ZPOS64_T corresponds to "uint64_t"
|
|
|
44
|
|
|
45 class ZipReader::MemoryBuffer : public boost::noncopyable
|
|
|
46 {
|
|
|
47 private:
|
|
|
48 const uint8_t* content_;
|
|
|
49 size_t size_;
|
|
|
50 size_t pos_;
|
|
|
51
|
|
|
52 public:
|
|
|
53 MemoryBuffer(const void* p,
|
|
|
54 size_t size) :
|
|
|
55 content_(reinterpret_cast<const uint8_t*>(p)),
|
|
|
56 size_(size),
|
|
|
57 pos_(0)
|
|
|
58 {
|
|
|
59 }
|
|
|
60
|
|
4356
|
61 explicit MemoryBuffer(const std::string& s) :
|
|
4355
|
62 content_(s.empty() ? NULL : reinterpret_cast<const uint8_t*>(s.c_str())),
|
|
|
63 size_(s.size()),
|
|
|
64 pos_(0)
|
|
|
65 {
|
|
|
66 }
|
|
|
67
|
|
|
68 // Returns the number of bytes actually read
|
|
|
69 uLong Read(void *target,
|
|
|
70 uLong size)
|
|
|
71 {
|
|
|
72 if (size <= 0)
|
|
|
73 {
|
|
|
74 return 0;
|
|
|
75 }
|
|
|
76 else
|
|
|
77 {
|
|
|
78 size_t s = static_cast<size_t>(size);
|
|
|
79 if (s + pos_ > size_)
|
|
|
80 {
|
|
|
81 s = size_ - pos_;
|
|
|
82 }
|
|
|
83
|
|
|
84 if (s != 0)
|
|
|
85 {
|
|
|
86 memcpy(target, content_ + pos_, s);
|
|
|
87 }
|
|
|
88
|
|
|
89 pos_ += s;
|
|
|
90 return s;
|
|
|
91 }
|
|
|
92 }
|
|
|
93
|
|
|
94 ZPOS64_T Tell() const
|
|
|
95 {
|
|
|
96 return static_cast<ZPOS64_T>(pos_);
|
|
|
97 }
|
|
|
98
|
|
|
99 long Seek(ZPOS64_T offset,
|
|
|
100 int origin)
|
|
|
101 {
|
|
|
102 ssize_t next;
|
|
|
103
|
|
|
104 switch (origin)
|
|
|
105 {
|
|
|
106 case ZLIB_FILEFUNC_SEEK_CUR:
|
|
|
107 next = static_cast<ssize_t>(offset) + static_cast<ssize_t>(pos_);
|
|
|
108 break;
|
|
|
109
|
|
|
110 case ZLIB_FILEFUNC_SEEK_SET:
|
|
|
111 next = static_cast<ssize_t>(offset);
|
|
|
112 break;
|
|
|
113
|
|
|
114 case ZLIB_FILEFUNC_SEEK_END:
|
|
|
115 next = static_cast<ssize_t>(offset) + static_cast<ssize_t>(size_);
|
|
|
116 break;
|
|
|
117
|
|
|
118 default: // Should never occur
|
|
|
119 return 1; // Error
|
|
|
120 }
|
|
|
121
|
|
|
122 if (next < 0)
|
|
|
123 {
|
|
|
124 pos_ = 0;
|
|
|
125 }
|
|
|
126 else if (next >= static_cast<long>(size_))
|
|
|
127 {
|
|
|
128 pos_ = size_;
|
|
|
129 }
|
|
|
130 else
|
|
|
131 {
|
|
|
132 pos_ = static_cast<long>(next);
|
|
|
133 }
|
|
|
134
|
|
|
135 return 0;
|
|
|
136 }
|
|
|
137
|
|
|
138
|
|
|
139 static voidpf OpenWrapper(voidpf opaque,
|
|
|
140 const void* filename,
|
|
|
141 int mode)
|
|
|
142 {
|
|
|
143 // Don't return NULL to make "unzip.c" happy
|
|
|
144 return opaque;
|
|
|
145 }
|
|
|
146
|
|
|
147 static uLong ReadWrapper(voidpf opaque,
|
|
|
148 voidpf stream,
|
|
|
149 void* buf,
|
|
|
150 uLong size)
|
|
|
151 {
|
|
|
152 assert(opaque != NULL);
|
|
|
153 return reinterpret_cast<MemoryBuffer*>(opaque)->Read(buf, size);
|
|
|
154 }
|
|
|
155
|
|
|
156 static ZPOS64_T TellWrapper(voidpf opaque,
|
|
|
157 voidpf stream)
|
|
|
158 {
|
|
|
159 assert(opaque != NULL);
|
|
|
160 return reinterpret_cast<MemoryBuffer*>(opaque)->Tell();
|
|
|
161 }
|
|
|
162
|
|
|
163 static long SeekWrapper(voidpf opaque,
|
|
|
164 voidpf stream,
|
|
|
165 ZPOS64_T offset,
|
|
|
166 int origin)
|
|
|
167 {
|
|
|
168 assert(opaque != NULL);
|
|
|
169 return reinterpret_cast<MemoryBuffer*>(opaque)->Seek(offset, origin);
|
|
|
170 }
|
|
|
171
|
|
|
172 static int CloseWrapper(voidpf opaque,
|
|
|
173 voidpf stream)
|
|
|
174 {
|
|
|
175 return 0;
|
|
|
176 }
|
|
|
177
|
|
|
178 static int TestErrorWrapper(voidpf opaque,
|
|
|
179 voidpf stream)
|
|
|
180 {
|
|
|
181 return 0; // ??
|
|
|
182 }
|
|
|
183 };
|
|
|
184
|
|
|
185
|
|
|
186
|
|
|
187 ZipReader* ZipReader::CreateFromMemory(const std::string& buffer)
|
|
|
188 {
|
|
|
189 if (buffer.empty())
|
|
|
190 {
|
|
|
191 return CreateFromMemory(NULL, 0);
|
|
|
192 }
|
|
|
193 else
|
|
|
194 {
|
|
|
195 return CreateFromMemory(buffer.c_str(), buffer.size());
|
|
|
196 }
|
|
|
197 }
|
|
|
198
|
|
|
199
|
|
|
200 bool ZipReader::IsZipMemoryBuffer(const void* buffer,
|
|
|
201 size_t size)
|
|
|
202 {
|
|
|
203 if (size < 4)
|
|
|
204 {
|
|
|
205 return false;
|
|
|
206 }
|
|
|
207 else
|
|
|
208 {
|
|
|
209 const uint8_t* c = reinterpret_cast<const uint8_t*>(buffer);
|
|
|
210 return (c[0] == 0x50 && // 'P'
|
|
|
211 c[1] == 0x4b && // 'K'
|
|
|
212 ((c[2] == 0x03 && c[3] == 0x04) ||
|
|
|
213 (c[2] == 0x05 && c[3] == 0x06) ||
|
|
|
214 (c[2] == 0x07 && c[3] == 0x08)));
|
|
|
215 }
|
|
|
216 }
|
|
|
217
|
|
|
218
|
|
|
219 bool ZipReader::IsZipMemoryBuffer(const std::string& content)
|
|
|
220 {
|
|
|
221 if (content.empty())
|
|
|
222 {
|
|
|
223 return false;
|
|
|
224 }
|
|
|
225 else
|
|
|
226 {
|
|
|
227 return IsZipMemoryBuffer(content.c_str(), content.size());
|
|
|
228 }
|
|
|
229 }
|
|
|
230
|
|
|
231
|
|
|
232 #if ORTHANC_SANDBOXED != 1
|
|
|
233 bool ZipReader::IsZipFile(const std::string& path)
|
|
|
234 {
|
|
|
235 std::string content;
|
|
|
236 SystemToolbox::ReadFileRange(content, path, 0, 4,
|
|
|
237 false /* don't throw if file is too small */);
|
|
|
238
|
|
|
239 return IsZipMemoryBuffer(content);
|
|
|
240 }
|
|
|
241 #endif
|
|
|
242
|
|
|
243
|
|
|
244 struct ZipReader::PImpl
|
|
|
245 {
|
|
|
246 unzFile unzip_;
|
|
|
247 std::unique_ptr<MemoryBuffer> reader_;
|
|
|
248 bool done_;
|
|
|
249
|
|
|
250 PImpl() :
|
|
|
251 unzip_(NULL),
|
|
|
252 done_(true)
|
|
|
253 {
|
|
|
254 }
|
|
|
255 };
|
|
|
256
|
|
|
257
|
|
|
258 ZipReader::ZipReader() :
|
|
|
259 pimpl_(new PImpl)
|
|
|
260 {
|
|
|
261 }
|
|
|
262
|
|
|
263
|
|
|
264 ZipReader::~ZipReader()
|
|
|
265 {
|
|
|
266 if (pimpl_->unzip_ != NULL)
|
|
|
267 {
|
|
|
268 unzClose(pimpl_->unzip_);
|
|
|
269 pimpl_->unzip_ = NULL;
|
|
|
270 }
|
|
|
271 }
|
|
|
272
|
|
|
273
|
|
|
274 uint64_t ZipReader::GetFilesCount() const
|
|
|
275 {
|
|
|
276 assert(pimpl_->unzip_ != NULL);
|
|
|
277
|
|
|
278 unz_global_info64_s info;
|
|
|
279
|
|
|
280 if (unzGetGlobalInfo64(pimpl_->unzip_, &info) == 0)
|
|
|
281 {
|
|
|
282 return info.number_entry;
|
|
|
283 }
|
|
|
284 else
|
|
|
285 {
|
|
|
286 throw OrthancException(ErrorCode_BadFileFormat);
|
|
|
287 }
|
|
|
288 }
|
|
|
289
|
|
|
290
|
|
|
291 void ZipReader::SeekFirst()
|
|
|
292 {
|
|
|
293 assert(pimpl_->unzip_ != NULL);
|
|
|
294 pimpl_->done_ = (unzGoToFirstFile(pimpl_->unzip_) != 0);
|
|
|
295 }
|
|
|
296
|
|
|
297
|
|
|
298 bool ZipReader::ReadNextFile(std::string& filename,
|
|
|
299 std::string& content)
|
|
|
300 {
|
|
|
301 assert(pimpl_->unzip_ != NULL);
|
|
|
302
|
|
|
303 if (pimpl_->done_)
|
|
|
304 {
|
|
|
305 return false;
|
|
|
306 }
|
|
|
307 else
|
|
|
308 {
|
|
|
309 unz_file_info64_s info;
|
|
|
310 if (unzGetCurrentFileInfo64(pimpl_->unzip_, &info, NULL, 0, NULL, 0, NULL, 0) != 0)
|
|
|
311 {
|
|
|
312 throw OrthancException(ErrorCode_BadFileFormat);
|
|
|
313 }
|
|
|
314
|
|
|
315 filename.resize(info.size_filename);
|
|
|
316 if (!filename.empty() &&
|
|
|
317 unzGetCurrentFileInfo64(pimpl_->unzip_, &info, &filename[0], filename.size(), NULL, 0, NULL, 0) != 0)
|
|
|
318 {
|
|
|
319 throw OrthancException(ErrorCode_BadFileFormat);
|
|
|
320 }
|
|
|
321
|
|
|
322 content.resize(info.uncompressed_size);
|
|
|
323
|
|
|
324 if (!content.empty())
|
|
|
325 {
|
|
|
326 if (unzOpenCurrentFile(pimpl_->unzip_) == 0)
|
|
|
327 {
|
|
|
328 bool success = (unzReadCurrentFile(pimpl_->unzip_, &content[0], content.size()) != 0);
|
|
|
329
|
|
|
330 if (unzCloseCurrentFile(pimpl_->unzip_) != 0 ||
|
|
|
331 !success)
|
|
|
332 {
|
|
|
333 throw OrthancException(ErrorCode_BadFileFormat);
|
|
|
334 }
|
|
|
335 }
|
|
|
336 else
|
|
|
337 {
|
|
|
338 throw OrthancException(ErrorCode_BadFileFormat);
|
|
|
339 }
|
|
|
340 }
|
|
|
341
|
|
|
342 pimpl_->done_ = (unzGoToNextFile(pimpl_->unzip_) != 0);
|
|
|
343
|
|
|
344 return true;
|
|
|
345 }
|
|
|
346 }
|
|
|
347
|
|
|
348
|
|
|
349 ZipReader* ZipReader::CreateFromMemory(const void* buffer,
|
|
|
350 size_t size)
|
|
|
351 {
|
|
|
352 if (!IsZipMemoryBuffer(buffer, size))
|
|
|
353 {
|
|
|
354 throw OrthancException(ErrorCode_BadFileFormat, "The memory buffer doesn't contain a ZIP archive");
|
|
|
355 }
|
|
|
356 else
|
|
|
357 {
|
|
|
358 std::unique_ptr<ZipReader> reader(new ZipReader);
|
|
|
359
|
|
|
360 reader->pimpl_->reader_.reset(new MemoryBuffer(buffer, size));
|
|
|
361 if (reader->pimpl_->reader_.get() == NULL)
|
|
|
362 {
|
|
|
363 throw OrthancException(ErrorCode_InternalError);
|
|
|
364 }
|
|
|
365
|
|
|
366 zlib_filefunc64_def funcs;
|
|
|
367 memset(&funcs, 0, sizeof(funcs));
|
|
|
368
|
|
|
369 funcs.opaque = reader->pimpl_->reader_.get();
|
|
|
370 funcs.zopen64_file = MemoryBuffer::OpenWrapper;
|
|
|
371 funcs.zread_file = MemoryBuffer::ReadWrapper;
|
|
|
372 funcs.ztell64_file = MemoryBuffer::TellWrapper;
|
|
|
373 funcs.zseek64_file = MemoryBuffer::SeekWrapper;
|
|
|
374 funcs.zclose_file = MemoryBuffer::CloseWrapper;
|
|
|
375 funcs.zerror_file = MemoryBuffer::TestErrorWrapper;
|
|
|
376
|
|
|
377 reader->pimpl_->unzip_ = unzOpen2_64(NULL, &funcs);
|
|
|
378 if (reader->pimpl_->unzip_ == NULL)
|
|
|
379 {
|
|
|
380 throw OrthancException(ErrorCode_BadFileFormat, "Cannot open ZIP archive from memory buffer");
|
|
|
381 }
|
|
|
382 else
|
|
|
383 {
|
|
|
384 reader->SeekFirst();
|
|
|
385 return reader.release();
|
|
|
386 }
|
|
|
387 }
|
|
|
388 }
|
|
|
389
|
|
|
390
|
|
|
391 #if ORTHANC_SANDBOXED != 1
|
|
|
392 ZipReader* ZipReader::CreateFromFile(const std::string& path)
|
|
|
393 {
|
|
|
394 if (!IsZipFile(path))
|
|
|
395 {
|
|
|
396 throw OrthancException(ErrorCode_BadFileFormat, "The file doesn't contain a ZIP archive: " + path);
|
|
|
397 }
|
|
|
398 else
|
|
|
399 {
|
|
|
400 std::unique_ptr<ZipReader> reader(new ZipReader);
|
|
|
401
|
|
|
402 reader->pimpl_->unzip_ = unzOpen64(path.c_str());
|
|
|
403 if (reader->pimpl_->unzip_ == NULL)
|
|
|
404 {
|
|
|
405 throw OrthancException(ErrorCode_BadFileFormat, "Cannot open ZIP archive from file: " + path);
|
|
|
406 }
|
|
|
407 else
|
|
|
408 {
|
|
|
409 reader->SeekFirst();
|
|
|
410 return reader.release();
|
|
|
411 }
|
|
|
412 }
|
|
|
413 }
|
|
|
414 #endif
|
|
|
415 }
|
