zip.h@ 78415

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1	/** @file
2	* IPRT - Compression.
3	*/
4
5	/*
6	* Copyright (C) 2006-2019 Oracle Corporation
7	*
8	* This file is part of VirtualBox Open Source Edition (OSE), as
9	* available from http://www.virtualbox.org. This file is free software;
10	* you can redistribute it and/or modify it under the terms of the GNU
11	* General Public License (GPL) as published by the Free Software
12	* Foundation, in version 2 as it comes in the "COPYING" file of the
13	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15	*
16	* The contents of this file may alternatively be used under the terms
17	* of the Common Development and Distribution License Version 1.0
18	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19	* VirtualBox OSE distribution, in which case the provisions of the
20	* CDDL are applicable instead of those of the GPL.
21	*
22	* You may elect to license modified versions of this file under the
23	* terms and conditions of either the GPL or the CDDL or both.
24	*/
25
26	#ifndef IPRT_INCLUDED_zip_h
27	#define IPRT_INCLUDED_zip_h
28	#ifndef RT_WITHOUT_PRAGMA_ONCE
29	# pragma once
30	#endif
31
32	#include <iprt/cdefs.h>
33	#include <iprt/types.h>
34
35	RT_C_DECLS_BEGIN
36
37	/** @defgroup grp_rt_zip RTZip - Compression
38	* @ingroup grp_rt
39	* @{
40	*/
41
42
43
44	/**
45	* Callback function for consuming compressed data during compression.
46	*
47	* @returns iprt status code.
48	* @param pvUser User argument.
49	* @param pvBuf Compressed data.
50	* @param cbBuf Size of the compressed data.
51	*/
52	typedef DECLCALLBACK(int) FNRTZIPOUT(void pvUser, const void pvBuf, size_t cbBuf);
53	/** Pointer to FNRTZIPOUT() function. */
54	typedef FNRTZIPOUT *PFNRTZIPOUT;
55
56	/**
57	* Callback function for supplying compressed data during decompression.
58	*
59	* @returns iprt status code.
60	* @param pvUser User argument.
61	* @param pvBuf Where to store the compressed data.
62	* @param cbBuf Size of the buffer.
63	* @param pcbBuf Number of bytes actually stored in the buffer.
64	*/
65	typedef DECLCALLBACK(int) FNRTZIPIN(void pvUser, void pvBuf, size_t cbBuf, size_t *pcbBuf);
66	/** Pointer to FNRTZIPIN() function. */
67	typedef FNRTZIPIN *PFNRTZIPIN;
68
69	/**
70	* Compression type.
71	* (Be careful with these they are stored in files!)
72	*/
73	typedef enum RTZIPTYPE
74	{
75	/** Invalid. */
76	RTZIPTYPE_INVALID = 0,
77	/** Choose best fitting one. */
78	RTZIPTYPE_AUTO,
79	/** Store the data. */
80	RTZIPTYPE_STORE,
81	/** Zlib compression the data. */
82	RTZIPTYPE_ZLIB,
83	/** BZlib compress. */
84	RTZIPTYPE_BZLIB,
85	/** libLZF compress. */
86	RTZIPTYPE_LZF,
87	/** Lempel-Ziv-Jeff-Bonwick compression. */
88	RTZIPTYPE_LZJB,
89	/** Lempel-Ziv-Oberhumer compression. */
90	RTZIPTYPE_LZO,
91	/* Zlib compression the data without zlib header. */
92	RTZIPTYPE_ZLIB_NO_HEADER,
93	/** End of valid the valid compression types. */
94	RTZIPTYPE_END
95	} RTZIPTYPE;
96
97	/**
98	* Compression level.
99	*/
100	typedef enum RTZIPLEVEL
101	{
102	/** Store, don't compress. */
103	RTZIPLEVEL_STORE = 0,
104	/** Fast compression. */
105	RTZIPLEVEL_FAST,
106	/** Default compression. */
107	RTZIPLEVEL_DEFAULT,
108	/** Maximal compression. */
109	RTZIPLEVEL_MAX
110	} RTZIPLEVEL;
111
112
113	/**
114	* Create a stream compressor instance.
115	*
116	* @returns iprt status code.
117	* @param ppZip Where to store the instance handle.
118	* @param pvUser User argument which will be passed on to pfnOut and pfnIn.
119	* @param pfnOut Callback for consuming output of compression.
120	* @param enmType Type of compressor to create.
121	* @param enmLevel Compression level.
122	*/
123	RTDECL(int) RTZipCompCreate(PRTZIPCOMP ppZip, void pvUser, PFNRTZIPOUT pfnOut, RTZIPTYPE enmType, RTZIPLEVEL enmLevel);
124
125	/**
126	* Compresses a chunk of memory.
127	*
128	* @returns iprt status code.
129	* @param pZip The compressor instance.
130	* @param pvBuf Pointer to buffer containing the bits to compress.
131	* @param cbBuf Number of bytes to compress.
132	*/
133	RTDECL(int) RTZipCompress(PRTZIPCOMP pZip, const void *pvBuf, size_t cbBuf);
134
135	/**
136	* Finishes the compression.
137	* This will flush all data and terminate the compression data stream.
138	*
139	* @returns iprt status code.
140	* @param pZip The stream compressor instance.
141	*/
142	RTDECL(int) RTZipCompFinish(PRTZIPCOMP pZip);
143
144	/**
145	* Destroys the stream compressor instance.
146	*
147	* @returns iprt status code.
148	* @param pZip The compressor instance.
149	*/
150	RTDECL(int) RTZipCompDestroy(PRTZIPCOMP pZip);
151
152
153	/**
154	* Create a stream decompressor instance.
155	*
156	* @returns iprt status code.
157	* @param ppZip Where to store the instance handle.
158	* @param pvUser User argument which will be passed on to pfnOut and pfnIn.
159	* @param pfnIn Callback for producing input for decompression.
160	*/
161	RTDECL(int) RTZipDecompCreate(PRTZIPDECOMP ppZip, void pvUser, PFNRTZIPIN pfnIn);
162
163	/**
164	* Decompresses a chunk of memory.
165	*
166	* @returns iprt status code.
167	* @param pZip The stream decompressor instance.
168	* @param pvBuf Where to store the decompressed data.
169	* @param cbBuf Number of bytes to produce. If pcbWritten is set
170	* any number of bytes up to cbBuf might be returned.
171	* @param pcbWritten Number of bytes actually written to the buffer. If NULL
172	* cbBuf number of bytes must be written.
173	*/
174	RTDECL(int) RTZipDecompress(PRTZIPDECOMP pZip, void pvBuf, size_t cbBuf, size_t pcbWritten);
175
176	/**
177	* Destroys the stream decompressor instance.
178	*
179	* @returns iprt status code.
180	* @param pZip The decompressor instance.
181	*/
182	RTDECL(int) RTZipDecompDestroy(PRTZIPDECOMP pZip);
183
184
185	/**
186	* Compress a chunk of memory into a block.
187	*
188	* @returns IPRT status code.
189	*
190	* @param enmType The compression type.
191	* @param enmLevel The compression level.
192	* @param fFlags Flags reserved for future extensions, MBZ.
193	* @param pvSrc Pointer to the input block.
194	* @param cbSrc Size of the input block.
195	* @param pvDst Pointer to the output buffer.
196	* @param cbDst The size of the output buffer.
197	* @param pcbDstActual Where to return the compressed size.
198	*/
199	RTDECL(int) RTZipBlockCompress(RTZIPTYPE enmType, RTZIPLEVEL enmLevel, uint32_t fFlags,
200	void const *pvSrc, size_t cbSrc,
201	void pvDst, size_t cbDst, size_t pcbDstActual) RT_NO_THROW_PROTO;
202
203
204	/**
205	* Decompress a block.
206	*
207	* @returns IPRT status code.
208	*
209	* @param enmType The compression type.
210	* @param fFlags Flags reserved for future extensions, MBZ.
211	* @param pvSrc Pointer to the input block.
212	* @param cbSrc Size of the input block.
213	* @param pcbSrcActual Where to return the compressed size.
214	* @param pvDst Pointer to the output buffer.
215	* @param cbDst The size of the output buffer.
216	* @param pcbDstActual Where to return the decompressed size.
217	*/
218	RTDECL(int) RTZipBlockDecompress(RTZIPTYPE enmType, uint32_t fFlags,
219	void const pvSrc, size_t cbSrc, size_t pcbSrcActual,
220	void pvDst, size_t cbDst, size_t pcbDstActual) RT_NO_THROW_PROTO;
221
222
223	/**
224	* Opens a gzip decompression I/O stream.
225	*
226	* @returns IPRT status code.
227	*
228	* @param hVfsIosIn The compressed input stream (must be readable).
229	* The reference is not consumed, instead another
230	* one is retained.
231	* @param fFlags Flags, MBZ.
232	* @param phVfsIosGunzip Where to return the handle to the gunzipped I/O
233	* stream (read).
234	*/
235	RTDECL(int) RTZipGzipDecompressIoStream(RTVFSIOSTREAM hVfsIosIn, uint32_t fFlags, PRTVFSIOSTREAM phVfsIosGunzip);
236
237	/** @name RTZipGzipDecompressIoStream flags.
238	* @{ */
239	/** Allow the smaller ZLIB header as well as the regular GZIP header. */
240	#define RTZIPGZIPDECOMP_F_ALLOW_ZLIB_HDR RT_BIT(0)
241	/** @} */
242
243
244	/**
245	* Opens a gzip decompression I/O stream.
246	*
247	* @returns IPRT status code.
248	*
249	* @param hVfsIosDst The compressed output stream (must be writable).
250	* The reference is not consumed, instead another
251	* one is retained.
252	* @param fFlags Flags, MBZ.
253	* @param uLevel The gzip compression level, 1 thru 9.
254	* @param phVfsIosGzip Where to return the gzip input I/O stream handle
255	* (you write to this).
256	*/
257	RTDECL(int) RTZipGzipCompressIoStream(RTVFSIOSTREAM hVfsIosDst, uint32_t fFlags, uint8_t uLevel, PRTVFSIOSTREAM phVfsIosGzip);
258
259	/**
260	* A mini GZIP program.
261	*
262	* @returns Program exit code.
263	*
264	* @param cArgs The number of arguments.
265	* @param papszArgs The argument vector. (Note that this may be
266	* reordered, so the memory must be writable.)
267	*/
268	RTDECL(RTEXITCODE) RTZipGzipCmd(unsigned cArgs, char **papszArgs);
269
270	/**
271	* Opens a TAR filesystem stream.
272	*
273	* This is used to extract, list or check a TAR archive.
274	*
275	* @returns IPRT status code.
276	*
277	* @param hVfsIosIn The input stream. The reference is not
278	* consumed, instead another one is retained.
279	* @param fFlags Flags, MBZ.
280	* @param phVfsFss Where to return the handle to the TAR
281	* filesystem stream.
282	*/
283	RTDECL(int) RTZipTarFsStreamFromIoStream(RTVFSIOSTREAM hVfsIosIn, uint32_t fFlags, PRTVFSFSSTREAM phVfsFss);
284
285	/** TAR format type. */
286	typedef enum RTZIPTARFORMAT
287	{
288	/** Customary invalid zero value. */
289	RTZIPTARFORMAT_INVALID = 0,
290	/** Default format (GNU). */
291	RTZIPTARFORMAT_DEFAULT,
292	/** The GNU format. */
293	RTZIPTARFORMAT_GNU,
294	/** USTAR format from POSIX.1-1988. */
295	RTZIPTARFORMAT_USTAR,
296	/** PAX format from POSIX.1-2001. */
297	RTZIPTARFORMAT_PAX,
298	/** End of valid formats. */
299	RTZIPTARFORMAT_END,
300	/** Make sure the type is at least 32 bits wide. */
301	RTZIPTARFORMAT_32BIT_HACK = 0x7fffffff
302	} RTZIPTARFORMAT;
303
304	/**
305	* Opens a TAR filesystem stream for the purpose of create a new TAR archive.
306	*
307	* @returns IPRT status code.
308	*
309	* @param hVfsIosOut The output stream, i.e. where the tar stuff is
310	* written. The reference is not consumed, instead
311	* another one is retained.
312	* @param enmFormat The desired output format.
313	* @param fFlags RTZIPTAR_C_XXX.
314	* @param phVfsFss Where to return the handle to the TAR
315	* filesystem stream.
316	*/
317	RTDECL(int) RTZipTarFsStreamToIoStream(RTVFSIOSTREAM hVfsIosOut, RTZIPTARFORMAT enmFormat,
318	uint32_t fFlags, PRTVFSFSSTREAM phVfsFss);
319
320	/** @name RTZIPTAR_C_XXX - TAR creation flags (RTZipTarFsStreamToIoStream).
321	* @{ */
322	/** Check for sparse files.
323	* @note Only supported when adding file objects. The files will be read
324	* twice. */
325	#define RTZIPTAR_C_SPARSE RT_BIT_32(0)
326	/** Valid bits. */
327	#define RTZIPTAR_C_VALID_MASK UINT32_C(0x00000001)
328	/** @} */
329
330	/**
331	* Set the owner to store the archive entries with.
332	*
333	* @returns IPRT status code.
334	* @param hVfsFss The handle to a TAR creator.
335	* @param uid The UID value to set. Passing NIL_RTUID makes
336	* it use the value found in RTFSOBJINFO.
337	* @param pszOwner The owner name to store. Passing NULL makes it
338	* use the value found in RTFSOBJINFO.
339	*/
340	RTDECL(int) RTZipTarFsStreamSetOwner(RTVFSFSSTREAM hVfsFss, RTUID uid, const char *pszOwner);
341
342	/**
343	* Set the group to store the archive entries with.
344	*
345	* @returns IPRT status code.
346	* @param hVfsFss The handle to a TAR creator.
347	* @param gid The GID value to set. Passing NIL_RTUID makes
348	* it use the value found in RTFSOBJINFO.
349	* @param pszGroup The group name to store. Passing NULL makes it
350	* use the value found in RTFSOBJINFO.
351	*/
352	RTDECL(int) RTZipTarFsStreamSetGroup(RTVFSFSSTREAM hVfsFss, RTGID gid, const char *pszGroup);
353
354	/**
355	* Set path prefix to store the archive entries with.
356	*
357	* @returns IPRT status code.
358	* @param hVfsFss The handle to a TAR creator.
359	* @param pszPrefix The path prefix to join the names with. Pass
360	* NULL for no prefix.
361	*/
362	RTDECL(int) RTZipTarFsStreamSetPrefix(RTVFSFSSTREAM hVfsFss, const char *pszPrefix);
363
364	/**
365	* Set the AND and OR masks to apply to file (non-dir) modes in the archive.
366	*
367	* @returns IPRT status code.
368	* @param hVfsFss The handle to a TAR creator.
369	* @param fAndMode The bits to keep
370	* @param fOrMode The bits to set.
371	*/
372	RTDECL(int) RTZipTarFsStreamSetFileMode(RTVFSFSSTREAM hVfsFss, RTFMODE fAndMode, RTFMODE fOrMode);
373
374	/**
375	* Set the AND and OR masks to apply to directory modes in the archive.
376	*
377	* @returns IPRT status code.
378	* @param hVfsFss The handle to a TAR creator.
379	* @param fAndMode The bits to keep
380	* @param fOrMode The bits to set.
381	*/
382	RTDECL(int) RTZipTarFsStreamSetDirMode(RTVFSFSSTREAM hVfsFss, RTFMODE fAndMode, RTFMODE fOrMode);
383
384	/**
385	* Set the modification time to store the archive entires with.
386	*
387	* @returns IPRT status code.
388	* @param hVfsFss The handle to a TAR creator.
389	* @param pModificationTime The modification time to use. Pass NULL to use
390	* the value found in RTFSOBJINFO.
391	*/
392	RTDECL(int) RTZipTarFsStreamSetMTime(RTVFSFSSTREAM hVfsFss, PCRTTIMESPEC pModificationTime);
393
394
395	/**
396	* A mini TAR program.
397	*
398	* @returns Program exit code.
399	*
400	* @param cArgs The number of arguments.
401	* @param papszArgs The argument vector. (Note that this may be
402	* reordered, so the memory must be writable.)
403	*/
404	RTDECL(RTEXITCODE) RTZipTarCmd(unsigned cArgs, char **papszArgs);
405
406	/**
407	* Opens a ZIP filesystem stream.
408	*
409	* This is used to extract, list or check a ZIP archive.
410	*
411	* @returns IPRT status code.
412	*
413	* @param hVfsIosIn The compressed input stream. The reference is
414	* not consumed, instead another one is retained.
415	* @param fFlags Flags, MBZ.
416	* @param phVfsFss Where to return the handle to the TAR
417	* filesystem stream.
418	*/
419	RTDECL(int) RTZipPkzipFsStreamFromIoStream(RTVFSIOSTREAM hVfsIosIn, uint32_t fFlags, PRTVFSFSSTREAM phVfsFss);
420
421	/**
422	* A mini UNZIP program.
423	*
424	* @returns Program exit code.
425	* @
426	* @param cArgs The number of arguments.
427	* @param papszArgs The argument vector. (Note that this may be
428	* reordered, so the memory must be writable.)
429	*/
430	RTDECL(RTEXITCODE) RTZipUnzipCmd(unsigned cArgs, char **papszArgs);
431
432	/**
433	* Helper for decompressing files of a ZIP file located in memory.
434	*
435	* @returns IPRT status code.
436	*
437	* @param ppvDst Where to store the pointer to the allocated
438	* buffer. To be freed with RTMemFree().
439	* @param pcbDst Where to store the pointer to the size of the
440	* allocated buffer.
441	* @param pvSrc Pointer to the buffer containing the .zip file.
442	* @param cbSrc Size of the buffer containing the .zip file.
443	* @param pszObject Name of the object to extract.
444	*/
445	RTDECL(int) RTZipPkzipMemDecompress(void *ppvDst, size_t pcbDst, const void pvSrc, size_t cbSrc, const char pszObject);
446
447	/**
448	* Opens a XAR filesystem stream.
449	*
450	* This is used to extract, list or check a XAR archive.
451	*
452	* @returns IPRT status code.
453	*
454	* @param hVfsIosIn The compressed input stream. The reference is
455	* not consumed, instead another one is retained.
456	* @param fFlags Flags, MBZ.
457	* @param phVfsFss Where to return the handle to the XAR filesystem
458	* stream.
459	*/
460	RTDECL(int) RTZipXarFsStreamFromIoStream(RTVFSIOSTREAM hVfsIosIn, uint32_t fFlags, PRTVFSFSSTREAM phVfsFss);
461
462	/** @} */
463
464	RT_C_DECLS_END
465
466	#endif /* !IPRT_INCLUDED_zip_h */
467

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