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fix for zip files larger than 4GB

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This commit is contained in:
Martins Mozeiko
2017-10-26 21:19:13 -07:00
parent 760bc7450a
commit f0236eca8c
1 changed files with 12 additions and 12 deletions
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pkg2zip_zip.c
+12 -12
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@@ -286,18 +286,22 @@ void zip_close(zip* z)
// zip64 Extended Information Extra Field
set16le(extra + 0, 1);
// size of this "extra" block
set16le(extra + 2, extra_size - 2*sizeof(uint16_t));
uint32_t extra_offset = 2 * sizeof(uint16_t);
set16le(extra + 2, extra_size - extra_offset);
if (size > 0xffffffff)
{
// original uncompressed file size
set64le(extra + 4, size);
set64le(extra + extra_offset, size);
extra_offset += sizeof(uint64_t);
// size of compressed data
set64le(extra + 12, size);
set64le(extra + extra_offset, size);
extra_offset += sizeof(uint64_t);
}
if (offset > 0xffffffff)
{
// offset of local header record
set64le(extra + 20, offset);
set64le(extra + extra_offset, offset);
extra_offset += sizeof(uint64_t);
}
if (extra_size > 2 * sizeof(uint16_t))
@@ -308,7 +312,7 @@ void zip_close(zip* z)
}
uint64_t end_of_central_dir_offset = z->total;
uint32_t central_dir_size = (uint32_t)(end_of_central_dir_offset - central_dir_offset);
uint64_t central_dir_size = end_of_central_dir_offset - central_dir_offset;
// zip64 end of central directory record
{
@@ -319,10 +323,6 @@ void zip_close(zip* z)
set16le(header + 12, ZIP_VERSION);
// version needed to extract
set16le(header + 14, ZIP_VERSION);
// number of this disk
set32le(header + 16, 0);
// number of the disk with the start of the central directory
set32le(header + 20, 0);
// total number of entries in the central directory on this disk
set64le(header + 24, z->count);
// total number of entries in the central directory
@@ -352,11 +352,11 @@ void zip_close(zip* z)
{
uint8_t header[ZIP_EOC_DIR_SIZE] = { 0x50, 0x4b, 0x05, 0x06 };
// total number of entries in the central directory on this disk
set16le(header + 8, (uint16_t)z->count);
set16le(header + 8, (uint16_t)min32(z->count, 0xffff));
// total number of entries in the central directory
set16le(header + 10, (uint16_t)z->count);
set16le(header + 10, (uint16_t)min32(z->count, 0xffff));
// size of the central directory
set32le(header + 12, central_dir_size);
set32le(header + 12, (uint32_t)min64(central_dir_size, 0xffffffff));
// offset of start of central directory with respect to the starting disk number
set32le(header + 16, (uint32_t)min64(central_dir_offset, 0xffffffff));