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/*-
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* Copyright (c) 2003-2008 Tim Kientzle
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* Copyright (c) 2008 Anselm Strauss
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Development supported by Google Summer of Code 2008.
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*/
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#include "test.h"
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__FBSDID("$FreeBSD: head/lib/libarchive/test/test_write_format_zip.c 201247 2009-12-30 05:59:21Z kientzle $");
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/*
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* Detailed byte-for-byte verification of the format of a zip archive
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* with a single file written to it.
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*/
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static unsigned long
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bitcrc32(unsigned long c, void *_p, size_t s)
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{
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/* This is a drop-in replacement for crc32() from zlib.
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* Libarchive should be able to correctly generate
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* uncompressed zip archives (including correct CRCs) even
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* when zlib is unavailable, and this function helps us verify
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* that. Yes, this is very, very slow and unsuitable for
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* production use, but it's correct, compact, and works well
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* enough for this particular usage. Libarchive internally
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* uses a much more efficient implementation. */
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const unsigned char *p = _p;
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int bitctr;
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if (p == NULL)
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return (0);
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for (; s > 0; --s) {
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c ^= *p++;
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for (bitctr = 8; bitctr > 0; --bitctr) {
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if (c & 1) c = (c >> 1);
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else c = (c >> 1) ^ 0xedb88320;
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c ^= 0x80000000;
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}
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}
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return (c);
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}
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/* Quick and dirty: Read 2-byte and 4-byte integers from Zip file. */
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static unsigned i2(const unsigned char *p) { return ((p[0] & 0xff) | ((p[1] & 0xff) << 8)); }
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static unsigned i4(const unsigned char *p) { return (i2(p) | (i2(p + 2) << 16)); }
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DEFINE_TEST(test_write_format_zip_file)
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{
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struct archive *a;
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struct archive_entry *ae;
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time_t t = 1234567890;
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struct tm *tm = localtime(&t);
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size_t used, buffsize = 1000000;
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unsigned long crc;
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int file_perm = 00644;
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int zip_version = 20;
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int zip_compression = 8;
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short file_uid = 10, file_gid = 20;
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unsigned char *buff, *buffend, *p;
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unsigned char *central_header, *local_header, *eocd, *eocd_record;
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unsigned char *extension_start, *extension_end;
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char file_data[] = {'1', '2', '3', '4', '5', '6', '7', '8'};
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char *file_name = "file";
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#ifndef HAVE_ZLIB_H
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zip_version = 10;
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zip_compression = 0;
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#endif
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buff = malloc(buffsize);
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/* Create a new archive in memory. */
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assert((a = archive_write_new()) != NULL);
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assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_zip(a));
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assertEqualIntA(a, ARCHIVE_OK,
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archive_write_set_options(a, "zip:experimental"));
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assertEqualIntA(a, ARCHIVE_OK,
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archive_write_open_memory(a, buff, buffsize, &used));
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assert((ae = archive_entry_new()) != NULL);
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archive_entry_copy_pathname(ae, file_name);
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archive_entry_set_mode(ae, AE_IFREG | file_perm);
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archive_entry_set_size(ae, sizeof(file_data));
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archive_entry_set_uid(ae, file_uid);
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archive_entry_set_gid(ae, file_gid);
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archive_entry_set_mtime(ae, t, 0);
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assertEqualInt(0, archive_write_header(a, ae));
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archive_entry_free(ae);
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assertEqualInt(8, archive_write_data(a, file_data, sizeof(file_data)));
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assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
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assertEqualInt(ARCHIVE_OK, archive_write_free(a));
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buffend = buff + used;
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dumpfile("constructed.zip", buff, used);
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/* Verify "End of Central Directory" record. */
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/* Get address of end-of-central-directory record. */
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eocd_record = p = buffend - 22; /* Assumes there is no zip comment field. */
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failure("End-of-central-directory begins with PK\\005\\006 signature");
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assertEqualMem(p, "PK\005\006", 4);
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failure("This must be disk 0");
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assertEqualInt(i2(p + 4), 0);
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failure("Central dir must start on disk 0");
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assertEqualInt(i2(p + 6), 0);
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failure("All central dir entries are on this disk");
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assertEqualInt(i2(p + 8), i2(p + 10));
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eocd = buff + i4(p + 12) + i4(p + 16);
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failure("no zip comment");
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assertEqualInt(i2(p + 20), 0);
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/* Get address of first entry in central directory. */
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central_header = p = buff + i4(buffend - 6);
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failure("Central file record at offset %d should begin with"
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" PK\\001\\002 signature",
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i4(buffend - 10));
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/* Verify file entry in central directory. */
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assertEqualMem(p, "PK\001\002", 4); /* Signature */
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assertEqualInt(i2(p + 4), 3 * 256 + zip_version); /* Version made by */
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assertEqualInt(i2(p + 6), zip_version); /* Version needed to extract */
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assertEqualInt(i2(p + 8), 8); /* Flags */
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assertEqualInt(i2(p + 10), zip_compression); /* Compression method */
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assertEqualInt(i2(p + 12), (tm->tm_hour * 2048) + (tm->tm_min * 32) + (tm->tm_sec / 2)); /* File time */
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assertEqualInt(i2(p + 14), ((tm->tm_year - 80) * 512) + ((tm->tm_mon + 1) * 32) + tm->tm_mday); /* File date */
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crc = bitcrc32(0, file_data, sizeof(file_data));
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assertEqualInt(i4(p + 16), crc); /* CRC-32 */
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/* assertEqualInt(i4(p + 20), sizeof(file_data)); */ /* Compressed size */
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assertEqualInt(i4(p + 24), sizeof(file_data)); /* Uncompressed size */
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assertEqualInt(i2(p + 28), strlen(file_name)); /* Pathname length */
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/* assertEqualInt(i2(p + 30), 28); */ /* Extra field length: See below */
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assertEqualInt(i2(p + 32), 0); /* File comment length */
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assertEqualInt(i2(p + 34), 0); /* Disk number start */
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assertEqualInt(i2(p + 36), 0); /* Internal file attrs */
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assertEqualInt(i4(p + 38) >> 16 & 01777, file_perm); /* External file attrs */
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assertEqualInt(i4(p + 42), 0); /* Offset of local header */
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assertEqualMem(p + 46, file_name, strlen(file_name)); /* Pathname */
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p = extension_start = central_header + 46 + strlen(file_name);
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extension_end = extension_start + i2(central_header + 30);
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assertEqualInt(i2(p), 0x5455); /* 'UT' extension header */
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assertEqualInt(i2(p + 2), 5); /* 'UT' size */
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assertEqualInt(p[4], 1); /* 'UT' flags */
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assertEqualInt(i4(p + 5), t); /* 'UT' mtime */
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p += 4 + i2(p + 2);
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assertEqualInt(i2(p), 0x7875); /* 'ux' extension header */
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assertEqualInt(i2(p + 2), 11); /* 'ux' size */
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/* TODO: verify 'ux' contents */
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p += 4 + i2(p + 2);
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/* Just in case: Report any extra extensions. */
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while (p < extension_end) {
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failure("Unexpected extension 0x%04X", i2(p));
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assert(0);
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p += 4 + i2(p + 2);
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}
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/* Should have run exactly to end of extra data. */
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assert(p == extension_end);
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assert(p == eocd);
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/* Regular EOCD immediately follows central directory. */
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assert(p == eocd_record);
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/* Verify local header of file entry. */
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p = local_header = buff;
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assertEqualMem(p, "PK\003\004", 4); /* Signature */
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assertEqualInt(i2(p + 4), zip_version); /* Version needed to extract */
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assertEqualInt(i2(p + 6), 8); /* Flags */
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assertEqualInt(i2(p + 8), zip_compression); /* Compression method */
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assertEqualInt(i2(p + 10), (tm->tm_hour * 2048) + (tm->tm_min * 32) + (tm->tm_sec / 2)); /* File time */
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assertEqualInt(i2(p + 12), ((tm->tm_year - 80) * 512) + ((tm->tm_mon + 1) * 32) + tm->tm_mday); /* File date */
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assertEqualInt(i4(p + 14), 0); /* CRC-32 */
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/* assertEqualInt(i4(p + 18), sizeof(file_data)); */ /* Compressed size */
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/* assertEqualInt(i4(p + 22), sizeof(file_data)); */ /* Uncompressed size not stored because we're using length-at-end. */
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assertEqualInt(i2(p + 26), strlen(file_name)); /* Pathname length */
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assertEqualInt(i2(p + 28), 37); /* Extra field length */
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assertEqualMem(p + 30, file_name, strlen(file_name)); /* Pathname */
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p = extension_start = local_header + 30 + strlen(file_name);
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extension_end = extension_start + i2(local_header + 28);
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assertEqualInt(i2(p), 0x5455); /* 'UT' extension header */
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assertEqualInt(i2(p + 2), 5); /* size */
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assertEqualInt(p[4], 1); /* 'UT' flags */
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assertEqualInt(i4(p + 5), t); /* 'UT' mtime */
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p += 4 + i2(p + 2);
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assertEqualInt(i2(p), 0x7875); /* 'ux' extension header */
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assertEqualInt(i2(p + 2), 11); /* size */
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assertEqualInt(p[4], 1); /* 'ux' version */
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assertEqualInt(p[5], 4); /* 'ux' uid size */
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assertEqualInt(i4(p + 6), file_uid); /* 'Ux' UID */
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assertEqualInt(p[10], 4); /* 'ux' gid size */
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assertEqualInt(i4(p + 11), file_gid); /* 'Ux' GID */
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p += 4 + i2(p + 2);
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assertEqualInt(i2(p), 0x6c78); /* 'xl' experimental extension block */
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assertEqualInt(i2(p + 2), 9); /* size */
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assertEqualInt(p[4], 7); /* bitmap of fields in this block */
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assertEqualInt(i2(p + 5) >> 8, 3); /* System & version made by */
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assertEqualInt(i2(p + 7), 0); /* internal file attributes */
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assertEqualInt(i4(p + 9) >> 16 & 01777, file_perm); /* external file attributes */
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p += 4 + i2(p + 2);
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1d0348 |
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/* Just in case: Report any extra extensions. */
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while (p < extension_end) {
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failure("Unexpected extension 0x%04X", i2(p));
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assert(0);
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p += 4 + i2(p + 2);
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}
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1d0348 |
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/* Should have run exactly to end of extra data. */
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assert(p == extension_end);
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1d0348 |
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/* Data descriptor should follow compressed data. */
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while (p < central_header && memcmp(p, "PK\007\010", 4) != 0)
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++p;
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assertEqualMem(p, "PK\007\010", 4);
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assertEqualInt(i4(p + 4), crc); /* CRC-32 */
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/* assertEqualInt(i4(p + 8), ???); */ /* compressed size */
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assertEqualInt(i4(p + 12), sizeof(file_data)); /* uncompressed size */
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1d0348 |
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Packit Service |
1d0348 |
/* Central directory should immediately follow the only entry. */
|
|
Packit Service |
1d0348 |
assert(p + 16 == central_header);
|
|
Packit Service |
1d0348 |
|
|
Packit Service |
1d0348 |
free(buff);
|
|
Packit Service |
1d0348 |
}
|