freebsd-dev/lib/libarchive/test/test_read_format_gtar_sparse.c

/*-
 * Copyright (c) 2003-2007 Tim Kientzle
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include "test.h"
__FBSDID("$FreeBSD$");

/*
 * Each of the following is an archive containing the following
 * entries:
 *
 * File 1: named "sparse"
 *   * a length of 3145728 bytes (3MiB)
 *   * a single 'a' byte at offset 1000000
 *   * a single 'a' byte at offset 2000000
 * File 2: named 'non-sparse'
 *   * length of 1 byte
 *   * contains a single byte 'a'
 */

static struct contents {
	off_t	o;
	size_t	s;
	char *d;
} archive_contents[] = {
	{ 1000000, 1, "a" },
	{ 2000000, 1, "a" },
	{ 3145728, 0, NULL }
};

/* Old GNU tar sparse format. */
static unsigned char archive_old[] = {
31,139,8,0,215,'[',190,'F',0,3,237,213,223,10,130,'0',20,199,241,'=',202,
'^',' ',216,'q',211,'=','H','O',224,'E',23,']','d',225,236,253,243,'d','i',
'P','(',132,'C',162,239,7,'d',219,241,'/',7,253,153,'.','u',155,14,'&','+',
215,171,'B',208,'Q','b',233,'^','G','U',244,155,17,'W',149,'1',148,193,'i',
']','b',244,222,216,'}',222,199,26,'\\','S','W',183,214,154,238,'x',154,'=',
'n','i',255,215,180,5,190,10,162,']','x','t','d',156,247,']','*','>',212,
'%',12,235,'g',253,'>',159,187,193,'x',194,234,234,245,'/',137,'?',194,251,
179,173,230,220,236,'R',230,127,192,'B',254,235,'r',202,255,168,249,'/',133,
23,'c','3',196,213,187,205,243,127,'[','|',127,0,0,0,0,0,0,0,0,0,0,0,252,
190,27,'H',10,',',253,0,'(',0,0};

#if ARCHIVE_VERSION_STAMP >= 1009000
/* libarchive < 1.9 doesn't support these. */

/* GNU tar "0.0" posix format, as written by GNU tar 1.15. */
static unsigned char archive_0_0[] = {
31,139,8,0,155,'X',190,'F',0,3,237,214,209,'N',131,'0',20,6,'`',174,'y',10,
'^','@',214,'s',218,'R',184,224,'Z',175,140,'7','>',0,206,'.','Y','t',155,
'Y','Y','2','}','z','[','u',147,'e','S','4','#','#','l',255,'w',211,164,229,
'4','%','p',224,'O','G','w',213,250,198,'V',143,'v',233,'R',163,'Y',142,220,
'K',181,'t','6',234,144,240,'2',165,194,'H','F',139,230,248,'A',9,142,'H',
'd',218,'(',173,'X',202,'H',144,'T','$',163,'d',221,229,'!','~',178,'r','u',
181,244,'G','9','v',159,175,'{',217,142,3,193,'&',185,190,189,'O','?',31,
'z',234,166,'o',182,148,164,180,225,'<',230,172,185,'4','_',205,30,158,23,
227,'\'','W',202,152,243,230,202,'b','2','q',182,'.',11,'O','f',241,238,134,
161,234,181,182,174,212,196,'1',23,7,202,200,151,229,134,255,']',183,'=',
165,'>','X','\'','b',22,'I','U','O','g',182,'$',202,179,220,20,25,153,'0',
'7','n',206,'i',191,'A',223,'O',160,'_',221,'w',251,190,150,254,231,208,'.',
155,254,23,'a',158,200,'(',17,'%','\'','i',162,'M',255,251,215,226,215,235,
218,214,7,218,255,199,170,250,'>',0,12,26,222,159,'~',165,'{',249,'o',190,
152,'_','u',251,'W','h',203,127,225,155,191,155,255,20,251,'H',136,252,'w',
2,127,'J','I','J',']','x','J',':','_',221,'w',251,190,214,254,23,244,157,
255,'L',200,127,172,'%','!',255,157,2,254,191,0,0,0,0,0,0,0,0,0,0,0,231,231,
29,157,135,'u','Z',0,'(',0,0};


/* GNU tar "0.1" posix format, as written by GNU tar 1.15.1 (?) */
static unsigned char archive_0_1[] = {
31,139,8,0,6,'Y',190,'F',0,3,237,214,223,'n',130,'0',20,6,'p',174,'y',10,
30,128,'a',207,161,127,240,130,219,'m','W',203,146,'e',15,208,'9','.',140,
138,6,'4','1','{',250,21,212,141,205,'l',',',145,'A','0',223,239,166,'M',
'K',176,210,30,248,162,201,163,221,223,'g',246,'5','+',202,200,'(','N','&',
229,198,22,'e',230,'u','H','8','Z',202,170,'%',163,'D',179,173,177,'b',143,
132,'V','F','*',')',133,246,4,197,146,149,23,236,187,'\\',196,'O','v',229,
214,22,'n',')',151,222,231,248,'_','>',218,145,'`',19,220,'=','<','G',135,
'M',143,202,249,'[',150,198,'$',149,225,196,'g',221,156,202,'w',171,151,229,
'z',182,'(',211,248,251,140,']','e',233,161,239,'+','j',206,172,236,'&',157,
':',177,14,21,'q','H',174,155,24,174,251,199,31,9,133,207,'"',176,219,185,
187,5,'Q',162,19,'3',213,'2',174,198,'f',205,'1','w','.',253,161,159,212,
'u',138,'&','n',191,158,234,237,186,157,'/',179,127,'y',5,180,212,'?','W',
229,'r',170,127,'Q',141,147,'"',18,'^',208,'K',17,157,234,223,29,183,'_',
175,'k',155,31,'i',253,'_',202,14,189,0,24,'5',156,159,'a','E','g',249,'/',
'_',231,'7',221,'~',0,218,242,'_',245,206,255,154,255,'$',19,'!',255,245,
225,'O',233,'K','J',164,175,'+',213,'}',181,159,'k',173,127,'A',159,249,207,
'T',249,143,'U','L',200,127,'}',192,247,23,0,0,0,0,0,0,0,0,0,0,224,250,188,
3,249,9,184,142,0,'(',0,0};


/* GNU tar "1.0" posix format, as written by GNU tar 1.17. */
/*
 * Note: This is not the same as the GNU tar "1.0" format
 * written by GNU tar 1.16.  The two formats are incompatible.
 *
 * Libarchive follows GNU tar 1.17 here, making it incompatible
 * with GNU tar 1.16.
 */

/*
 * This test archive is uncompressed, as that exercises some of the
 * code better than compressed does.  (The uncompression layers try to
 * work with large blocks and the parsing code in libarchive has sections that
 * have to work harder if reads return small pieces of data.)
 */
static unsigned char archive_1_0[] = {
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'p','a','r','s','e',0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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'5','0',0,'0','0','0','1','7','5','0',0,'0','0','0','0','0','0','0','0','2',
'1','5',0,'1','0','6','5','7','4','5','4','6','1','3',0,'0','1','3','4','2',
'5',0,' ','x',0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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'N','U','S','p','a','r','s','e','F','i','l','e','.','7','5','4','7','/','s',
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0,'1','0','6','5','7','4','5','4','0','5','0',0,'0','1','5','1','1','2',0,
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10,'1','9','9','9','8','7','2',10,'5','1','2',10,'3','1','4','5','7','2',
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

#endif

#define min(a,b) ((a) < (b) ? (a) : (b))

static void
verify_archive(void *b, size_t l, struct contents *cts, const char *name)
{
	struct archive_entry *ae;
	struct archive *a;
	int err;
	/* data, size, offset of next expected block. */
	struct contents e;
	/* data, size, offset of block read from archive. */
	const void *ad;
	size_t as;
	off_t ao;

	assert((a = archive_read_new()) != NULL);
	assert(0 == archive_read_support_compression_all(a));
	assert(0 == archive_read_support_format_tar(a));
	assert(0 == read_open_memory(a, b, l, 3));
	assertEqualIntA(a, 0, archive_read_next_header(a, &ae));
	assertEqualString("sparse", archive_entry_pathname(ae));

	e = *cts++;
	while (0 == (err = archive_read_data_block(a, &ad, &as, &ao))) {
		while (as > 0) {
			/* Anything before the next expected block must be NULL. */
			char c = *(char *)ad;
			if(ao < e.o) {
				assert(c == 0);
			} else if (ao == e.o) {
				assert(c == *e.d);
				e.d++;
				e.o++;
				e.s--;
				/* End of expected? step to next expected. */
				if (e.s <= 0)
					e = *cts++;
			} else {
				failure("Expected data not found");
				assert(ao <= e.o);
				archive_read_finish(a);
				return;
			}
			ad++;
			ao++;
			as--;
		}
	}
	assertEqualIntA(a, err, ARCHIVE_EOF);
	failure("Size returned at EOF must be zero");
	assertEqualInt(as, 0);
#if ARCHIVE_VERSION_STAMP < 1009000
	/* libarchive < 1.9 doesn't get this right */
	skipping("offset of final sparse chunk");
#else
	failure("Offset of final empty chunk must be same as file size");
	assertEqualInt(ao, e.o);
#endif

	err = archive_read_next_header(a, &ae);
	failure("Failed to read the file following the sparse file in %s", name);
	assertEqualIntA(a, ARCHIVE_OK, err);
	if (err == ARCHIVE_OK) {
		assertEqualString("non-sparse", archive_entry_pathname(ae));
	}

	assert(0 == archive_read_close(a));
#if ARCHIVE_API_VERSION > 1
	assert(0 == archive_read_finish(a));
#else
	archive_read_finish(a);
#endif
}

DEFINE_TEST(test_read_format_gtar_sparse)
{
	FILE *t = fopen("archive_1_0.tgz", "w");
	fwrite(archive_1_0, sizeof(archive_1_0), 1, t);
	fclose(t);

	verify_archive(archive_old, sizeof(archive_old), archive_contents, "archive_old");

	/*
	 * libarchive < 1.9 doesn't support the newer sparse formats
	 * from GNU tar 1.15 and 1.16.
	 */
#if ARCHIVE_VERSION_STAMP < 1009000
	skipping("read support for GNUtar sparse format 0.0");
#else
	verify_archive(archive_0_0, sizeof(archive_0_0), archive_contents, "archive_0_0");
#endif
#if ARCHIVE_VERSION_STAMP < 1009000
	skipping("read support for GNUtar sparse format 0.1");
#else
	verify_archive(archive_0_1, sizeof(archive_0_1), archive_contents, "archive_0_1");
#endif
#if ARCHIVE_VERSION_STAMP < 1009000
	skipping("read support for GNUtar sparse format 1.0");
#else
	verify_archive(archive_1_0, sizeof(archive_1_0), archive_contents, "archive_1_0");
#endif
}