| 1 | // Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. |
| 2 | |
| 3 | namespace WixToolset.Dtf.Compression.Cab |
| 4 | { |
| 5 | using System; |
| 6 | using System.IO; |
| 7 | using System.Text; |
| 8 | using System.Collections.Generic; |
| 9 | using System.Globalization; |
| 10 | using System.Runtime.InteropServices; |
| 11 | using System.Diagnostics.CodeAnalysis; |
| 12 | |
| 13 | internal class CabPacker : CabWorker |
| 14 | { |
| 15 | private const string TempStreamName = "%%TEMP%%"; |
| 16 | |
| 17 | private NativeMethods.FCI.Handle fciHandle; |
| 18 | |
| 19 | // These delegates need to be saved as member variables |
| 20 | // so that they don't get GC'd. |
| 21 | private NativeMethods.FCI.PFNALLOC fciAllocMemHandler; |
| 22 | private NativeMethods.FCI.PFNFREE fciFreeMemHandler; |
| 23 | private NativeMethods.FCI.PFNOPEN fciOpenStreamHandler; |
| 24 | private NativeMethods.FCI.PFNREAD fciReadStreamHandler; |
| 25 | private NativeMethods.FCI.PFNWRITE fciWriteStreamHandler; |
| 26 | private NativeMethods.FCI.PFNCLOSE fciCloseStreamHandler; |
| 27 | private NativeMethods.FCI.PFNSEEK fciSeekStreamHandler; |
| 28 | private NativeMethods.FCI.PFNFILEPLACED fciFilePlacedHandler; |
| 29 | private NativeMethods.FCI.PFNDELETE fciDeleteFileHandler; |
| 30 | private NativeMethods.FCI.PFNGETTEMPFILE fciGetTempFileHandler; |
| 31 | |
| 32 | private NativeMethods.FCI.PFNGETNEXTCABINET fciGetNextCabinet; |
| 33 | private NativeMethods.FCI.PFNSTATUS fciCreateStatus; |
| 34 | private NativeMethods.FCI.PFNGETOPENINFO fciGetOpenInfo; |
| 35 | |
| 36 | private IPackStreamContext context; |
| 37 | |
| 38 | private FileAttributes fileAttributes; |
| 39 | private DateTime fileLastWriteTime; |
| 40 | |
| 41 | private int maxCabBytes; |
| 42 | |
| 43 | private long totalFolderBytesProcessedInCurrentCab; |
| 44 | |
| 45 | private CompressionLevel compressionLevel; |
| 46 | private bool dontUseTempFiles; |
| 47 | private IList<Stream> tempStreams; |
| 48 | |
| 49 | public CabPacker(CabEngine cabEngine) |
| 50 | : base(cabEngine) |
| 51 | { |
| 52 | this.fciAllocMemHandler = this.CabAllocMem; |
| 53 | this.fciFreeMemHandler = this.CabFreeMem; |
| 54 | this.fciOpenStreamHandler = this.CabOpenStreamEx; |
| 55 | this.fciReadStreamHandler = this.CabReadStreamEx; |
| 56 | this.fciWriteStreamHandler = this.CabWriteStreamEx; |
| 57 | this.fciCloseStreamHandler = this.CabCloseStreamEx; |
| 58 | this.fciSeekStreamHandler = this.CabSeekStreamEx; |
| 59 | this.fciFilePlacedHandler = this.CabFilePlaced; |
| 60 | this.fciDeleteFileHandler = this.CabDeleteFile; |
| 61 | this.fciGetTempFileHandler = this.CabGetTempFile; |
| 62 | this.fciGetNextCabinet = this.CabGetNextCabinet; |
| 63 | this.fciCreateStatus = this.CabCreateStatus; |
| 64 | this.fciGetOpenInfo = this.CabGetOpenInfo; |
| 65 | this.tempStreams = new List<Stream>(); |
| 66 | this.compressionLevel = CompressionLevel.Normal; |
| 67 | } |
| 68 | |
| 69 | public bool UseTempFiles |
| 70 | { |
| 71 | get |
| 72 | { |
| 73 | return !this.dontUseTempFiles; |
| 74 | } |
| 75 | |
| 76 | set |
| 77 | { |
| 78 | this.dontUseTempFiles = !value; |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | public CompressionLevel CompressionLevel |
| 83 | { |
| 84 | get |
| 85 | { |
| 86 | return this.compressionLevel; |
| 87 | } |
| 88 | |
| 89 | set |
| 90 | { |
| 91 | this.compressionLevel = value; |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] |
| 96 | private void CreateFci(long maxArchiveSize) |
| 97 | { |
| 98 | NativeMethods.FCI.CCAB ccab = new NativeMethods.FCI.CCAB(); |
| 99 | if (maxArchiveSize > 0 && maxArchiveSize < ccab.cb) |
| 100 | { |
| 101 | ccab.cb = Math.Max( |
| 102 | NativeMethods.FCI.MIN_DISK, (int) maxArchiveSize); |
| 103 | } |
| 104 | |
| 105 | object maxFolderSizeOption = this.context.GetOption( |
| 106 | "maxFolderSize", null); |
| 107 | if (maxFolderSizeOption != null) |
| 108 | { |
| 109 | long maxFolderSize = Convert.ToInt64( |
| 110 | maxFolderSizeOption, CultureInfo.InvariantCulture); |
| 111 | if (maxFolderSize > 0 && maxFolderSize < ccab.cbFolderThresh) |
| 112 | { |
| 113 | ccab.cbFolderThresh = (int) maxFolderSize; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | this.maxCabBytes = ccab.cb; |
| 118 | ccab.szCab = this.context.GetArchiveName(0); |
| 119 | if (ccab.szCab == null) |
| 120 | { |
| 121 | throw new FileNotFoundException( |
| 122 | "Cabinet name not provided by stream context."); |
| 123 | } |
| 124 | ccab.setID = (short) new Random().Next( |
| 125 | Int16.MinValue, Int16.MaxValue + 1); |
| 126 | this.CabNumbers[ccab.szCab] = 0; |
| 127 | this.currentArchiveName = ccab.szCab; |
| 128 | this.totalArchives = 1; |
| 129 | this.CabStream = null; |
| 130 | |
| 131 | this.Erf.Clear(); |
| 132 | this.fciHandle = NativeMethods.FCI.Create( |
| 133 | this.ErfHandle.AddrOfPinnedObject(), |
| 134 | this.fciFilePlacedHandler, |
| 135 | this.fciAllocMemHandler, |
| 136 | this.fciFreeMemHandler, |
| 137 | this.fciOpenStreamHandler, |
| 138 | this.fciReadStreamHandler, |
| 139 | this.fciWriteStreamHandler, |
| 140 | this.fciCloseStreamHandler, |
| 141 | this.fciSeekStreamHandler, |
| 142 | this.fciDeleteFileHandler, |
| 143 | this.fciGetTempFileHandler, |
| 144 | ccab, |
| 145 | IntPtr.Zero); |
| 146 | this.CheckError(false); |
| 147 | } |
| 148 | |
| 149 | public void Pack( |
| 150 | IPackStreamContext streamContext, |
| 151 | IEnumerable<string> files, |
| 152 | long maxArchiveSize) |
| 153 | { |
| 154 | if (streamContext == null) |
| 155 | { |
| 156 | throw new ArgumentNullException("streamContext"); |
| 157 | } |
| 158 | |
| 159 | if (files == null) |
| 160 | { |
| 161 | throw new ArgumentNullException("files"); |
| 162 | } |
| 163 | |
| 164 | lock (this) |
| 165 | { |
| 166 | try |
| 167 | { |
| 168 | this.context = streamContext; |
| 169 | |
| 170 | this.ResetProgressData(); |
| 171 | |
| 172 | this.CreateFci(maxArchiveSize); |
| 173 | |
| 174 | foreach (string file in files) |
| 175 | { |
| 176 | FileAttributes attributes; |
| 177 | DateTime lastWriteTime; |
| 178 | Stream fileStream = this.context.OpenFileReadStream( |
| 179 | file, |
| 180 | out attributes, |
| 181 | out lastWriteTime); |
| 182 | if (fileStream != null) |
| 183 | { |
| 184 | this.totalFileBytes += fileStream.Length; |
| 185 | this.totalFiles++; |
| 186 | this.context.CloseFileReadStream(file, fileStream); |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | long uncompressedBytesInFolder = 0; |
| 191 | this.currentFileNumber = -1; |
| 192 | |
| 193 | foreach (string file in files) |
| 194 | { |
| 195 | FileAttributes attributes; |
| 196 | DateTime lastWriteTime; |
| 197 | Stream fileStream = this.context.OpenFileReadStream( |
| 198 | file, out attributes, out lastWriteTime); |
| 199 | if (fileStream == null) |
| 200 | { |
| 201 | continue; |
| 202 | } |
| 203 | |
| 204 | if (fileStream.Length >= (long) NativeMethods.FCI.MAX_FOLDER) |
| 205 | { |
| 206 | throw new NotSupportedException(String.Format( |
| 207 | CultureInfo.InvariantCulture, |
| 208 | "File {0} exceeds maximum file size " + |
| 209 | "for cabinet format.", |
| 210 | file)); |
| 211 | } |
| 212 | |
| 213 | if (uncompressedBytesInFolder > 0) |
| 214 | { |
| 215 | // Automatically create a new folder if this file |
| 216 | // won't fit in the current folder. |
| 217 | bool nextFolder = uncompressedBytesInFolder |
| 218 | + fileStream.Length >= (long) NativeMethods.FCI.MAX_FOLDER; |
| 219 | |
| 220 | // Otherwise ask the client if it wants to |
| 221 | // move to the next folder. |
| 222 | if (!nextFolder) |
| 223 | { |
| 224 | object nextFolderOption = streamContext.GetOption( |
| 225 | "nextFolder", |
| 226 | new object[] { file, this.currentFolderNumber }); |
| 227 | nextFolder = Convert.ToBoolean( |
| 228 | nextFolderOption, CultureInfo.InvariantCulture); |
| 229 | } |
| 230 | |
| 231 | if (nextFolder) |
| 232 | { |
| 233 | this.FlushFolder(); |
| 234 | uncompressedBytesInFolder = 0; |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | if (this.currentFolderTotalBytes > 0) |
| 239 | { |
| 240 | this.currentFolderTotalBytes = 0; |
| 241 | this.currentFolderNumber++; |
| 242 | uncompressedBytesInFolder = 0; |
| 243 | } |
| 244 | |
| 245 | this.currentFileName = file; |
| 246 | this.currentFileNumber++; |
| 247 | |
| 248 | this.currentFileTotalBytes = fileStream.Length; |
| 249 | this.currentFileBytesProcessed = 0; |
| 250 | this.OnProgress(ArchiveProgressType.StartFile); |
| 251 | |
| 252 | uncompressedBytesInFolder += fileStream.Length; |
| 253 | |
| 254 | this.AddFile( |
| 255 | file, |
| 256 | fileStream, |
| 257 | attributes, |
| 258 | lastWriteTime, |
| 259 | false, |
| 260 | this.CompressionLevel); |
| 261 | } |
| 262 | |
| 263 | this.FlushFolder(); |
| 264 | this.FlushCabinet(); |
| 265 | } |
| 266 | finally |
| 267 | { |
| 268 | if (this.CabStream != null) |
| 269 | { |
| 270 | this.context.CloseArchiveWriteStream( |
| 271 | this.currentArchiveNumber, |
| 272 | this.currentArchiveName, |
| 273 | this.CabStream); |
| 274 | this.CabStream = null; |
| 275 | } |
| 276 | |
| 277 | if (this.FileStream != null) |
| 278 | { |
| 279 | this.context.CloseFileReadStream( |
| 280 | this.currentFileName, this.FileStream); |
| 281 | this.FileStream = null; |
| 282 | } |
| 283 | this.context = null; |
| 284 | |
| 285 | if (this.fciHandle != null) |
| 286 | { |
| 287 | this.fciHandle.Dispose(); |
| 288 | this.fciHandle = null; |
| 289 | } |
| 290 | } |
| 291 | } |
| 292 | } |
| 293 | |
| 294 | internal override int CabOpenStreamEx(string path, int openFlags, int shareMode, out int err, IntPtr pv) |
| 295 | { |
| 296 | if (this.CabNumbers.ContainsKey(path)) |
| 297 | { |
| 298 | Stream stream = this.CabStream; |
| 299 | if (stream == null) |
| 300 | { |
| 301 | short cabNumber = this.CabNumbers[path]; |
| 302 | |
| 303 | this.currentFolderTotalBytes = 0; |
| 304 | |
| 305 | stream = this.context.OpenArchiveWriteStream(cabNumber, path, true, this.CabEngine); |
| 306 | if (stream == null) |
| 307 | { |
| 308 | throw new FileNotFoundException( |
| 309 | String.Format(CultureInfo.InvariantCulture, "Cabinet {0} not provided.", cabNumber)); |
| 310 | } |
| 311 | this.currentArchiveName = path; |
| 312 | |
| 313 | this.currentArchiveTotalBytes = Math.Min( |
| 314 | this.totalFolderBytesProcessedInCurrentCab, this.maxCabBytes); |
| 315 | this.currentArchiveBytesProcessed = 0; |
| 316 | |
| 317 | this.OnProgress(ArchiveProgressType.StartArchive); |
| 318 | this.CabStream = stream; |
| 319 | } |
| 320 | path = CabWorker.CabStreamName; |
| 321 | } |
| 322 | else if (path == CabPacker.TempStreamName) |
| 323 | { |
| 324 | // Opening memory stream for a temp file. |
| 325 | Stream stream = new MemoryStream(); |
| 326 | this.tempStreams.Add(stream); |
| 327 | int streamHandle = this.StreamHandles.AllocHandle(stream); |
| 328 | err = 0; |
| 329 | return streamHandle; |
| 330 | } |
| 331 | else if (path != CabWorker.CabStreamName) |
| 332 | { |
| 333 | // Opening a file on disk for a temp file. |
| 334 | path = Path.Combine(Path.GetTempPath(), path); |
| 335 | Stream stream = new FileStream(path, FileMode.Open, FileAccess.ReadWrite); |
| 336 | this.tempStreams.Add(stream); |
| 337 | stream = new DuplicateStream(stream); |
| 338 | int streamHandle = this.StreamHandles.AllocHandle(stream); |
| 339 | err = 0; |
| 340 | return streamHandle; |
| 341 | } |
| 342 | return base.CabOpenStreamEx(path, openFlags, shareMode, out err, pv); |
| 343 | } |
| 344 | |
| 345 | internal override int CabWriteStreamEx(int streamHandle, IntPtr memory, int cb, out int err, IntPtr pv) |
| 346 | { |
| 347 | int count = base.CabWriteStreamEx(streamHandle, memory, cb, out err, pv); |
| 348 | if (count > 0 && err == 0) |
| 349 | { |
| 350 | Stream stream = this.StreamHandles[streamHandle]; |
| 351 | if (DuplicateStream.OriginalStream(stream) == |
| 352 | DuplicateStream.OriginalStream(this.CabStream)) |
| 353 | { |
| 354 | this.currentArchiveBytesProcessed += cb; |
| 355 | if (this.currentArchiveBytesProcessed > this.currentArchiveTotalBytes) |
| 356 | { |
| 357 | this.currentArchiveBytesProcessed = this.currentArchiveTotalBytes; |
| 358 | } |
| 359 | } |
| 360 | } |
| 361 | return count; |
| 362 | } |
| 363 | |
| 364 | internal override int CabCloseStreamEx(int streamHandle, out int err, IntPtr pv) |
| 365 | { |
| 366 | Stream stream = DuplicateStream.OriginalStream(this.StreamHandles[streamHandle]); |
| 367 | |
| 368 | if (stream == DuplicateStream.OriginalStream(this.FileStream)) |
| 369 | { |
| 370 | this.context.CloseFileReadStream(this.currentFileName, stream); |
| 371 | this.FileStream = null; |
| 372 | long remainder = this.currentFileTotalBytes - this.currentFileBytesProcessed; |
| 373 | this.currentFileBytesProcessed += remainder; |
| 374 | this.fileBytesProcessed += remainder; |
| 375 | this.OnProgress(ArchiveProgressType.FinishFile); |
| 376 | |
| 377 | this.currentFileTotalBytes = 0; |
| 378 | this.currentFileBytesProcessed = 0; |
| 379 | this.currentFileName = null; |
| 380 | } |
| 381 | else if (stream == DuplicateStream.OriginalStream(this.CabStream)) |
| 382 | { |
| 383 | if (stream.CanWrite) |
| 384 | { |
| 385 | stream.Flush(); |
| 386 | } |
| 387 | |
| 388 | this.currentArchiveBytesProcessed = this.currentArchiveTotalBytes; |
| 389 | this.OnProgress(ArchiveProgressType.FinishArchive); |
| 390 | this.currentArchiveNumber++; |
| 391 | this.totalArchives++; |
| 392 | |
| 393 | this.context.CloseArchiveWriteStream( |
| 394 | this.currentArchiveNumber, |
| 395 | this.currentArchiveName, |
| 396 | stream); |
| 397 | |
| 398 | this.currentArchiveName = this.NextCabinetName; |
| 399 | this.currentArchiveBytesProcessed = this.currentArchiveTotalBytes = 0; |
| 400 | this.totalFolderBytesProcessedInCurrentCab = 0; |
| 401 | |
| 402 | this.CabStream = null; |
| 403 | } |
| 404 | else // Must be a temp stream |
| 405 | { |
| 406 | stream.Close(); |
| 407 | this.tempStreams.Remove(stream); |
| 408 | } |
| 409 | return base.CabCloseStreamEx(streamHandle, out err, pv); |
| 410 | } |
| 411 | |
| 412 | /// <summary> |
| 413 | /// Disposes of resources allocated by the cabinet engine. |
| 414 | /// </summary> |
| 415 | /// <param name="disposing">If true, the method has been called directly or indirectly by a user's code, |
| 416 | /// so managed and unmanaged resources will be disposed. If false, the method has been called by the |
| 417 | /// runtime from inside the finalizer, and only unmanaged resources will be disposed.</param> |
| 418 | [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] |
| 419 | protected override void Dispose(bool disposing) |
| 420 | { |
| 421 | try |
| 422 | { |
| 423 | if (disposing) |
| 424 | { |
| 425 | if (this.fciHandle != null) |
| 426 | { |
| 427 | this.fciHandle.Dispose(); |
| 428 | this.fciHandle = null; |
| 429 | } |
| 430 | } |
| 431 | } |
| 432 | finally |
| 433 | { |
| 434 | base.Dispose(disposing); |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | private static NativeMethods.FCI.TCOMP GetCompressionType(CompressionLevel compLevel) |
| 439 | { |
| 440 | if (compLevel < CompressionLevel.Min) |
| 441 | { |
| 442 | return NativeMethods.FCI.TCOMP.TYPE_NONE; |
| 443 | } |
| 444 | else |
| 445 | { |
| 446 | if (compLevel > CompressionLevel.Max) |
| 447 | { |
| 448 | compLevel = CompressionLevel.Max; |
| 449 | } |
| 450 | |
| 451 | int lzxWindowMax = |
| 452 | ((int) NativeMethods.FCI.TCOMP.LZX_WINDOW_HI >> (int) NativeMethods.FCI.TCOMP.SHIFT_LZX_WINDOW) - |
| 453 | ((int) NativeMethods.FCI.TCOMP.LZX_WINDOW_LO >> (int) NativeMethods.FCI.TCOMP.SHIFT_LZX_WINDOW); |
| 454 | int lzxWindow = lzxWindowMax * |
| 455 | (compLevel - CompressionLevel.Min) / (CompressionLevel.Max - CompressionLevel.Min); |
| 456 | |
| 457 | return (NativeMethods.FCI.TCOMP) ((int) NativeMethods.FCI.TCOMP.TYPE_LZX | |
| 458 | ((int) NativeMethods.FCI.TCOMP.LZX_WINDOW_LO + |
| 459 | (lzxWindow << (int) NativeMethods.FCI.TCOMP.SHIFT_LZX_WINDOW))); |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | [SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands")] |
| 464 | private void AddFile( |
| 465 | string name, |
| 466 | Stream stream, |
| 467 | FileAttributes attributes, |
| 468 | DateTime lastWriteTime, |
| 469 | bool execute, |
| 470 | CompressionLevel compLevel) |
| 471 | { |
| 472 | this.FileStream = stream; |
| 473 | this.fileAttributes = attributes & |
| 474 | (FileAttributes.Archive | FileAttributes.Hidden | FileAttributes.ReadOnly | FileAttributes.System); |
| 475 | this.fileLastWriteTime = lastWriteTime; |
| 476 | this.currentFileName = name; |
| 477 | |
| 478 | NativeMethods.FCI.TCOMP tcomp = CabPacker.GetCompressionType(compLevel); |
| 479 | |
| 480 | IntPtr namePtr = IntPtr.Zero; |
| 481 | try |
| 482 | { |
| 483 | Encoding nameEncoding = Encoding.ASCII; |
| 484 | if (Encoding.UTF8.GetByteCount(name) > name.Length) |
| 485 | { |
| 486 | nameEncoding = Encoding.UTF8; |
| 487 | this.fileAttributes |= FileAttributes.Normal; // _A_NAME_IS_UTF |
| 488 | } |
| 489 | |
| 490 | byte[] nameBytes = nameEncoding.GetBytes(name); |
| 491 | namePtr = Marshal.AllocHGlobal(nameBytes.Length + 1); |
| 492 | Marshal.Copy(nameBytes, 0, namePtr, nameBytes.Length); |
| 493 | Marshal.WriteByte(namePtr, nameBytes.Length, 0); |
| 494 | |
| 495 | this.Erf.Clear(); |
| 496 | NativeMethods.FCI.AddFile( |
| 497 | this.fciHandle, |
| 498 | String.Empty, |
| 499 | namePtr, |
| 500 | execute, |
| 501 | this.fciGetNextCabinet, |
| 502 | this.fciCreateStatus, |
| 503 | this.fciGetOpenInfo, |
| 504 | tcomp); |
| 505 | } |
| 506 | finally |
| 507 | { |
| 508 | if (namePtr != IntPtr.Zero) |
| 509 | { |
| 510 | Marshal.FreeHGlobal(namePtr); |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | this.CheckError(false); |
| 515 | this.FileStream = null; |
| 516 | this.currentFileName = null; |
| 517 | } |
| 518 | |
| 519 | private void FlushFolder() |
| 520 | { |
| 521 | this.Erf.Clear(); |
| 522 | NativeMethods.FCI.FlushFolder(this.fciHandle, this.fciGetNextCabinet, this.fciCreateStatus); |
| 523 | this.CheckError(false); |
| 524 | } |
| 525 | |
| 526 | private void FlushCabinet() |
| 527 | { |
| 528 | this.Erf.Clear(); |
| 529 | NativeMethods.FCI.FlushCabinet(this.fciHandle, false, this.fciGetNextCabinet, this.fciCreateStatus); |
| 530 | this.CheckError(false); |
| 531 | } |
| 532 | |
| 533 | private int CabGetOpenInfo( |
| 534 | string path, |
| 535 | out short date, |
| 536 | out short time, |
| 537 | out short attribs, |
| 538 | out int err, |
| 539 | IntPtr pv) |
| 540 | { |
| 541 | CompressionEngine.DateTimeToDosDateAndTime(this.fileLastWriteTime, out date, out time); |
| 542 | attribs = (short) this.fileAttributes; |
| 543 | |
| 544 | Stream stream = this.FileStream; |
| 545 | this.FileStream = new DuplicateStream(stream); |
| 546 | int streamHandle = this.StreamHandles.AllocHandle(stream); |
| 547 | err = 0; |
| 548 | return streamHandle; |
| 549 | } |
| 550 | |
| 551 | private int CabFilePlaced( |
| 552 | IntPtr pccab, |
| 553 | string filePath, |
| 554 | long fileSize, |
| 555 | int continuation, |
| 556 | IntPtr pv) |
| 557 | { |
| 558 | return 0; |
| 559 | } |
| 560 | |
| 561 | private int CabGetNextCabinet(IntPtr pccab, uint prevCabSize, IntPtr pv) |
| 562 | { |
| 563 | NativeMethods.FCI.CCAB nextCcab = new NativeMethods.FCI.CCAB(); |
| 564 | Marshal.PtrToStructure(pccab, nextCcab); |
| 565 | |
| 566 | nextCcab.szDisk = String.Empty; |
| 567 | nextCcab.szCab = this.context.GetArchiveName(nextCcab.iCab); |
| 568 | this.CabNumbers[nextCcab.szCab] = (short) nextCcab.iCab; |
| 569 | this.NextCabinetName = nextCcab.szCab; |
| 570 | |
| 571 | Marshal.StructureToPtr(nextCcab, pccab, false); |
| 572 | return 1; |
| 573 | } |
| 574 | |
| 575 | private int CabCreateStatus(NativeMethods.FCI.STATUS typeStatus, uint cb1, uint cb2, IntPtr pv) |
| 576 | { |
| 577 | switch (typeStatus) |
| 578 | { |
| 579 | case NativeMethods.FCI.STATUS.FILE: |
| 580 | if (cb2 > 0 && this.currentFileBytesProcessed < this.currentFileTotalBytes) |
| 581 | { |
| 582 | if (this.currentFileBytesProcessed + cb2 > this.currentFileTotalBytes) |
| 583 | { |
| 584 | cb2 = (uint) this.currentFileTotalBytes - (uint) this.currentFileBytesProcessed; |
| 585 | } |
| 586 | this.currentFileBytesProcessed += cb2; |
| 587 | this.fileBytesProcessed += cb2; |
| 588 | |
| 589 | this.OnProgress(ArchiveProgressType.PartialFile); |
| 590 | } |
| 591 | break; |
| 592 | |
| 593 | case NativeMethods.FCI.STATUS.FOLDER: |
| 594 | if (cb1 == 0) |
| 595 | { |
| 596 | this.currentFolderTotalBytes = cb2 - this.totalFolderBytesProcessedInCurrentCab; |
| 597 | this.totalFolderBytesProcessedInCurrentCab = cb2; |
| 598 | } |
| 599 | else if (this.currentFolderTotalBytes == 0) |
| 600 | { |
| 601 | this.OnProgress(ArchiveProgressType.PartialArchive); |
| 602 | } |
| 603 | break; |
| 604 | |
| 605 | case NativeMethods.FCI.STATUS.CABINET: |
| 606 | break; |
| 607 | } |
| 608 | return 0; |
| 609 | } |
| 610 | |
| 611 | private int CabGetTempFile(IntPtr tempNamePtr, int tempNameSize, IntPtr pv) |
| 612 | { |
| 613 | string tempFileName; |
| 614 | if (this.UseTempFiles) |
| 615 | { |
| 616 | tempFileName = Path.GetFileName(Path.GetTempFileName()); |
| 617 | } |
| 618 | else |
| 619 | { |
| 620 | tempFileName = CabPacker.TempStreamName; |
| 621 | } |
| 622 | |
| 623 | byte[] tempNameBytes = Encoding.ASCII.GetBytes(tempFileName); |
| 624 | if (tempNameBytes.Length >= tempNameSize) |
| 625 | { |
| 626 | return -1; |
| 627 | } |
| 628 | |
| 629 | Marshal.Copy(tempNameBytes, 0, tempNamePtr, tempNameBytes.Length); |
| 630 | Marshal.WriteByte(tempNamePtr, tempNameBytes.Length, 0); // null-terminator |
| 631 | return 1; |
| 632 | } |
| 633 | |
| 634 | private int CabDeleteFile(string path, out int err, IntPtr pv) |
| 635 | { |
| 636 | try |
| 637 | { |
| 638 | // Deleting a temp file - don't bother if it is only a memory stream. |
| 639 | if (path != CabPacker.TempStreamName) |
| 640 | { |
| 641 | path = Path.Combine(Path.GetTempPath(), path); |
| 642 | File.Delete(path); |
| 643 | } |
| 644 | } |
| 645 | catch (IOException) |
| 646 | { |
| 647 | // Failure to delete a temp file is not fatal. |
| 648 | } |
| 649 | err = 0; |
| 650 | return 1; |
| 651 | } |
| 652 | } |
| 653 | } |