Mercurial > hg > orthanc
annotate OrthancFramework/Sources/Compression/ZipReader.cpp @ 4359:074f37013186
fix ZipReader.cpp for msvc
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 08 Dec 2020 16:48:58 +0100 |
| parents | 18c94a82f3d4 |
| children | 4301722b3225 |
| rev | line source |
|---|---|
| 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 | |
|
4359
074f37013186
fix ZipReader.cpp for msvc
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
4356
diff
changeset
|
38 #if defined(_MSC_VER) |
|
074f37013186
fix ZipReader.cpp for msvc
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
4356
diff
changeset
|
39 # include <BaseTsd.h> // Definition of ssize_t |
|
074f37013186
fix ZipReader.cpp for msvc
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
4356
diff
changeset
|
40 #endif |
|
074f37013186
fix ZipReader.cpp for msvc
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
4356
diff
changeset
|
41 |
| 4355 | 42 #include <string.h> |
| 43 | |
| 44 | |
| 45 namespace Orthanc | |
| 46 { | |
| 47 // ZPOS64_T corresponds to "uint64_t" | |
| 48 | |
| 49 class ZipReader::MemoryBuffer : public boost::noncopyable | |
| 50 { | |
| 51 private: | |
| 52 const uint8_t* content_; | |
| 53 size_t size_; | |
| 54 size_t pos_; | |
| 55 | |
| 56 public: | |
| 57 MemoryBuffer(const void* p, | |
| 58 size_t size) : | |
| 59 content_(reinterpret_cast<const uint8_t*>(p)), | |
| 60 size_(size), | |
| 61 pos_(0) | |
| 62 { | |
| 63 } | |
| 64 | |
| 4356 | 65 explicit MemoryBuffer(const std::string& s) : |
| 4355 | 66 content_(s.empty() ? NULL : reinterpret_cast<const uint8_t*>(s.c_str())), |
| 67 size_(s.size()), | |
| 68 pos_(0) | |
| 69 { | |
| 70 } | |
| 71 | |
| 72 // Returns the number of bytes actually read | |
| 73 uLong Read(void *target, | |
| 74 uLong size) | |
| 75 { | |
| 76 if (size <= 0) | |
| 77 { | |
| 78 return 0; | |
| 79 } | |
| 80 else | |
| 81 { | |
| 82 size_t s = static_cast<size_t>(size); | |
| 83 if (s + pos_ > size_) | |
| 84 { | |
| 85 s = size_ - pos_; | |
| 86 } | |
| 87 | |
| 88 if (s != 0) | |
| 89 { | |
| 90 memcpy(target, content_ + pos_, s); | |
| 91 } | |
| 92 | |
| 93 pos_ += s; | |
| 94 return s; | |
| 95 } | |
| 96 } | |
| 97 | |
| 98 ZPOS64_T Tell() const | |
| 99 { | |
| 100 return static_cast<ZPOS64_T>(pos_); | |
| 101 } | |
| 102 | |
| 103 long Seek(ZPOS64_T offset, | |
| 104 int origin) | |
| 105 { | |
| 106 ssize_t next; | |
| 107 | |
| 108 switch (origin) | |
| 109 { | |
| 110 case ZLIB_FILEFUNC_SEEK_CUR: | |
| 111 next = static_cast<ssize_t>(offset) + static_cast<ssize_t>(pos_); | |
| 112 break; | |
| 113 | |
| 114 case ZLIB_FILEFUNC_SEEK_SET: | |
| 115 next = static_cast<ssize_t>(offset); | |
| 116 break; | |
| 117 | |
| 118 case ZLIB_FILEFUNC_SEEK_END: | |
| 119 next = static_cast<ssize_t>(offset) + static_cast<ssize_t>(size_); | |
| 120 break; | |
| 121 | |
| 122 default: // Should never occur | |
| 123 return 1; // Error | |
| 124 } | |
| 125 | |
| 126 if (next < 0) | |
| 127 { | |
| 128 pos_ = 0; | |
| 129 } | |
| 130 else if (next >= static_cast<long>(size_)) | |
| 131 { | |
| 132 pos_ = size_; | |
| 133 } | |
| 134 else | |
| 135 { | |
| 136 pos_ = static_cast<long>(next); | |
| 137 } | |
| 138 | |
| 139 return 0; | |
| 140 } | |
| 141 | |
| 142 | |
| 143 static voidpf OpenWrapper(voidpf opaque, | |
| 144 const void* filename, | |
| 145 int mode) | |
| 146 { | |
| 147 // Don't return NULL to make "unzip.c" happy | |
| 148 return opaque; | |
| 149 } | |
| 150 | |
| 151 static uLong ReadWrapper(voidpf opaque, | |
| 152 voidpf stream, | |
| 153 void* buf, | |
| 154 uLong size) | |
| 155 { | |
| 156 assert(opaque != NULL); | |
| 157 return reinterpret_cast<MemoryBuffer*>(opaque)->Read(buf, size); | |
| 158 } | |
| 159 | |
| 160 static ZPOS64_T TellWrapper(voidpf opaque, | |
| 161 voidpf stream) | |
| 162 { | |
| 163 assert(opaque != NULL); | |
| 164 return reinterpret_cast<MemoryBuffer*>(opaque)->Tell(); | |
| 165 } | |
| 166 | |
| 167 static long SeekWrapper(voidpf opaque, | |
| 168 voidpf stream, | |
| 169 ZPOS64_T offset, | |
| 170 int origin) | |
| 171 { | |
| 172 assert(opaque != NULL); | |
| 173 return reinterpret_cast<MemoryBuffer*>(opaque)->Seek(offset, origin); | |
| 174 } | |
| 175 | |
| 176 static int CloseWrapper(voidpf opaque, | |
| 177 voidpf stream) | |
| 178 { | |
| 179 return 0; | |
| 180 } | |
| 181 | |
| 182 static int TestErrorWrapper(voidpf opaque, | |
| 183 voidpf stream) | |
| 184 { | |
| 185 return 0; // ?? | |
| 186 } | |
| 187 }; | |
| 188 | |
| 189 | |
| 190 | |
| 191 ZipReader* ZipReader::CreateFromMemory(const std::string& buffer) | |
| 192 { | |
| 193 if (buffer.empty()) | |
| 194 { | |
| 195 return CreateFromMemory(NULL, 0); | |
| 196 } | |
| 197 else | |
| 198 { | |
| 199 return CreateFromMemory(buffer.c_str(), buffer.size()); | |
| 200 } | |
| 201 } | |
| 202 | |
| 203 | |
| 204 bool ZipReader::IsZipMemoryBuffer(const void* buffer, | |
| 205 size_t size) | |
| 206 { | |
| 207 if (size < 4) | |
| 208 { | |
| 209 return false; | |
| 210 } | |
| 211 else | |
| 212 { | |
| 213 const uint8_t* c = reinterpret_cast<const uint8_t*>(buffer); | |
| 214 return (c[0] == 0x50 && // 'P' | |
| 215 c[1] == 0x4b && // 'K' | |
| 216 ((c[2] == 0x03 && c[3] == 0x04) || | |
| 217 (c[2] == 0x05 && c[3] == 0x06) || | |
| 218 (c[2] == 0x07 && c[3] == 0x08))); | |
| 219 } | |
| 220 } | |
| 221 | |
| 222 | |
| 223 bool ZipReader::IsZipMemoryBuffer(const std::string& content) | |
| 224 { | |
| 225 if (content.empty()) | |
| 226 { | |
| 227 return false; | |
| 228 } | |
| 229 else | |
| 230 { | |
| 231 return IsZipMemoryBuffer(content.c_str(), content.size()); | |
| 232 } | |
| 233 } | |
| 234 | |
| 235 | |
| 236 #if ORTHANC_SANDBOXED != 1 | |
| 237 bool ZipReader::IsZipFile(const std::string& path) | |
| 238 { | |
| 239 std::string content; | |
| 240 SystemToolbox::ReadFileRange(content, path, 0, 4, | |
| 241 false /* don't throw if file is too small */); | |
| 242 | |
| 243 return IsZipMemoryBuffer(content); | |
| 244 } | |
| 245 #endif | |
| 246 | |
| 247 | |
| 248 struct ZipReader::PImpl | |
| 249 { | |
| 250 unzFile unzip_; | |
| 251 std::unique_ptr<MemoryBuffer> reader_; | |
| 252 bool done_; | |
| 253 | |
| 254 PImpl() : | |
| 255 unzip_(NULL), | |
| 256 done_(true) | |
| 257 { | |
| 258 } | |
| 259 }; | |
| 260 | |
| 261 | |
| 262 ZipReader::ZipReader() : | |
| 263 pimpl_(new PImpl) | |
| 264 { | |
| 265 } | |
| 266 | |
| 267 | |
| 268 ZipReader::~ZipReader() | |
| 269 { | |
| 270 if (pimpl_->unzip_ != NULL) | |
| 271 { | |
| 272 unzClose(pimpl_->unzip_); | |
| 273 pimpl_->unzip_ = NULL; | |
| 274 } | |
| 275 } | |
| 276 | |
| 277 | |
| 278 uint64_t ZipReader::GetFilesCount() const | |
| 279 { | |
| 280 assert(pimpl_->unzip_ != NULL); | |
| 281 | |
| 282 unz_global_info64_s info; | |
| 283 | |
| 284 if (unzGetGlobalInfo64(pimpl_->unzip_, &info) == 0) | |
| 285 { | |
| 286 return info.number_entry; | |
| 287 } | |
| 288 else | |
| 289 { | |
| 290 throw OrthancException(ErrorCode_BadFileFormat); | |
| 291 } | |
| 292 } | |
| 293 | |
| 294 | |
| 295 void ZipReader::SeekFirst() | |
| 296 { | |
| 297 assert(pimpl_->unzip_ != NULL); | |
| 298 pimpl_->done_ = (unzGoToFirstFile(pimpl_->unzip_) != 0); | |
| 299 } | |
| 300 | |
| 301 | |
| 302 bool ZipReader::ReadNextFile(std::string& filename, | |
| 303 std::string& content) | |
| 304 { | |
| 305 assert(pimpl_->unzip_ != NULL); | |
| 306 | |
| 307 if (pimpl_->done_) | |
| 308 { | |
| 309 return false; | |
| 310 } | |
| 311 else | |
| 312 { | |
| 313 unz_file_info64_s info; | |
| 314 if (unzGetCurrentFileInfo64(pimpl_->unzip_, &info, NULL, 0, NULL, 0, NULL, 0) != 0) | |
| 315 { | |
| 316 throw OrthancException(ErrorCode_BadFileFormat); | |
| 317 } | |
| 318 | |
| 319 filename.resize(info.size_filename); | |
| 320 if (!filename.empty() && | |
| 321 unzGetCurrentFileInfo64(pimpl_->unzip_, &info, &filename[0], filename.size(), NULL, 0, NULL, 0) != 0) | |
| 322 { | |
| 323 throw OrthancException(ErrorCode_BadFileFormat); | |
| 324 } | |
| 325 | |
| 326 content.resize(info.uncompressed_size); | |
| 327 | |
| 328 if (!content.empty()) | |
| 329 { | |
| 330 if (unzOpenCurrentFile(pimpl_->unzip_) == 0) | |
| 331 { | |
| 332 bool success = (unzReadCurrentFile(pimpl_->unzip_, &content[0], content.size()) != 0); | |
| 333 | |
| 334 if (unzCloseCurrentFile(pimpl_->unzip_) != 0 || | |
| 335 !success) | |
| 336 { | |
| 337 throw OrthancException(ErrorCode_BadFileFormat); | |
| 338 } | |
| 339 } | |
| 340 else | |
| 341 { | |
| 342 throw OrthancException(ErrorCode_BadFileFormat); | |
| 343 } | |
| 344 } | |
| 345 | |
| 346 pimpl_->done_ = (unzGoToNextFile(pimpl_->unzip_) != 0); | |
| 347 | |
| 348 return true; | |
| 349 } | |
| 350 } | |
| 351 | |
| 352 | |
| 353 ZipReader* ZipReader::CreateFromMemory(const void* buffer, | |
| 354 size_t size) | |
| 355 { | |
| 356 if (!IsZipMemoryBuffer(buffer, size)) | |
| 357 { | |
| 358 throw OrthancException(ErrorCode_BadFileFormat, "The memory buffer doesn't contain a ZIP archive"); | |
| 359 } | |
| 360 else | |
| 361 { | |
| 362 std::unique_ptr<ZipReader> reader(new ZipReader); | |
| 363 | |
| 364 reader->pimpl_->reader_.reset(new MemoryBuffer(buffer, size)); | |
| 365 if (reader->pimpl_->reader_.get() == NULL) | |
| 366 { | |
| 367 throw OrthancException(ErrorCode_InternalError); | |
| 368 } | |
| 369 | |
| 370 zlib_filefunc64_def funcs; | |
| 371 memset(&funcs, 0, sizeof(funcs)); | |
| 372 | |
| 373 funcs.opaque = reader->pimpl_->reader_.get(); | |
| 374 funcs.zopen64_file = MemoryBuffer::OpenWrapper; | |
| 375 funcs.zread_file = MemoryBuffer::ReadWrapper; | |
| 376 funcs.ztell64_file = MemoryBuffer::TellWrapper; | |
| 377 funcs.zseek64_file = MemoryBuffer::SeekWrapper; | |
| 378 funcs.zclose_file = MemoryBuffer::CloseWrapper; | |
| 379 funcs.zerror_file = MemoryBuffer::TestErrorWrapper; | |
| 380 | |
| 381 reader->pimpl_->unzip_ = unzOpen2_64(NULL, &funcs); | |
| 382 if (reader->pimpl_->unzip_ == NULL) | |
| 383 { | |
| 384 throw OrthancException(ErrorCode_BadFileFormat, "Cannot open ZIP archive from memory buffer"); | |
| 385 } | |
| 386 else | |
| 387 { | |
| 388 reader->SeekFirst(); | |
| 389 return reader.release(); | |
| 390 } | |
| 391 } | |
| 392 } | |
| 393 | |
| 394 | |
| 395 #if ORTHANC_SANDBOXED != 1 | |
| 396 ZipReader* ZipReader::CreateFromFile(const std::string& path) | |
| 397 { | |
| 398 if (!IsZipFile(path)) | |
| 399 { | |
| 400 throw OrthancException(ErrorCode_BadFileFormat, "The file doesn't contain a ZIP archive: " + path); | |
| 401 } | |
| 402 else | |
| 403 { | |
| 404 std::unique_ptr<ZipReader> reader(new ZipReader); | |
| 405 | |
| 406 reader->pimpl_->unzip_ = unzOpen64(path.c_str()); | |
| 407 if (reader->pimpl_->unzip_ == NULL) | |
| 408 { | |
| 409 throw OrthancException(ErrorCode_BadFileFormat, "Cannot open ZIP archive from file: " + path); | |
| 410 } | |
| 411 else | |
| 412 { | |
| 413 reader->SeekFirst(); | |
| 414 return reader.release(); | |
| 415 } | |
| 416 } | |
| 417 } | |
| 418 #endif | |
| 419 } |