/*
* Test whether we can handle this data.
*
* <sigh> LZMA has a rather poor file signature. Zeros do not
* make good signature bytes as a rule, and the only non-zero byte
* here is an ASCII character. For example, an uncompressed tar
* archive whose first file is ']' would satisfy this check. It may
* be necessary to exclude LZMA from compression_all() because of
* this. Clients of libarchive would then have to explicitly enable
* LZMA checking instead of (or in addition to) compression_all() when
* they have other evidence (file name, command-line option) to go on.
*/
static int
lzma_bidder_bid(struct archive_read_filter_bidder *self,
struct archive_read_filter *filter)
{
const unsigned char *buffer;
ssize_t avail;
uint32_t dicsize;
uint64_t uncompressed_size;
int bits_checked;
(void)self; /* UNUSED */
buffer = __archive_read_filter_ahead(filter, 14, &avail);
if (buffer == NULL)
return (0);
/* First byte of raw LZMA stream is commonly 0x5d.
* The first byte is a special number, which consists of
* three parameters of LZMA compression, a number of literal
* context bits(which is from 0 to 8, default is 3), a number
* of literal pos bits(which is from 0 to 4, default is 0),
* a number of pos bits(which is from 0 to 4, default is 2).
* The first byte is made by
* (pos bits * 5 + literal pos bit) * 9 + * literal contest bit,
* and so the default value in this field is
* (2 * 5 + 0) * 9 + 3 = 0x5d.
* lzma of LZMA SDK has options to change those parameters.
* It means a range of this field is from 0 to 224. And lzma of
* XZ Utils with option -e records 0x5e in this field. */
/* NOTE: If this checking of the first byte increases false
* recognition, we should allow only 0x5d and 0x5e for the first
* byte of LZMA stream. */
bits_checked = 0;
if (buffer[0] > (4 * 5 + 4) * 9 + 8)
return (0);
/* Most likely value in the first byte of LZMA stream. */
if (buffer[0] == 0x5d || buffer[0] == 0x5e)
bits_checked += 8;
/* Sixth through fourteenth bytes are uncompressed size,
* stored in little-endian order. `-1' means uncompressed
* size is unknown and lzma of XZ Utils always records `-1'
* in this field. */
uncompressed_size = tk_archive_le64dec(buffer+5);
if (uncompressed_size == (uint64_t)ARCHIVE_LITERAL_LL(-1))
bits_checked += 64;
/* Second through fifth bytes are dictionary size, stored in
* little-endian order. The minimum dictionary size is
* 1 << 12(4KiB) which the lzma of LZMA SDK uses with option
* -d12 and the maxinam dictionary size is 1 << 27(128MiB)
* which the one uses with option -d27.
* NOTE: A comment of LZMA SDK source code says this dictionary
* range is from 1 << 12 to 1 << 30. */
dicsize = tk_archive_le32dec(buffer+1);
switch (dicsize) {
case 0x00001000:/* lzma of LZMA SDK option -d12. */
case 0x00002000:/* lzma of LZMA SDK option -d13. */
case 0x00004000:/* lzma of LZMA SDK option -d14. */
case 0x00008000:/* lzma of LZMA SDK option -d15. */
case 0x00010000:/* lzma of XZ Utils option -0 and -1.
* lzma of LZMA SDK option -d16. */
case 0x00020000:/* lzma of LZMA SDK option -d17. */
case 0x00040000:/* lzma of LZMA SDK option -d18. */
case 0x00080000:/* lzma of XZ Utils option -2.
* lzma of LZMA SDK option -d19. */
case 0x00100000:/* lzma of XZ Utils option -3.
* lzma of LZMA SDK option -d20. */
case 0x00200000:/* lzma of XZ Utils option -4.
* lzma of LZMA SDK option -d21. */
case 0x00400000:/* lzma of XZ Utils option -5.
* lzma of LZMA SDK option -d22. */
case 0x00800000:/* lzma of XZ Utils option -6.
* lzma of LZMA SDK option -d23. */
case 0x01000000:/* lzma of XZ Utils option -7.
* lzma of LZMA SDK option -d24. */
case 0x02000000:/* lzma of XZ Utils option -8.
* lzma of LZMA SDK option -d25. */
case 0x04000000:/* lzma of XZ Utils option -9.
* lzma of LZMA SDK option -d26. */
case 0x08000000:/* lzma of LZMA SDK option -d27. */
bits_checked += 32;
break;
default:
/* If a memory usage for encoding was not enough on
* the platform where LZMA stream was made, lzma of
* XZ Utils automatically decreased the dictionary
* size to enough memory for encoding by 1Mi bytes
* (1 << 20).*/
if (dicsize <= 0x03F00000 && dicsize >= 0x00300000 &&
(dicsize & ((1 << 20)-1)) == 0 &&
bits_checked == 8 + 64) {
bits_checked += 32;
break;
}
/* Otherwise dictionary size is unlikely. But it is
* possible that someone makes lzma stream with
* liblzma/LZMA SDK in one's dictionary size. */
return (0);
}
/* TODO: The above test is still very weak. It would be
* good to do better. */
return (bits_checked);
}
static int
archive_write_zip_finish_entry(struct archive_write *a)
{
struct zip *zip = a->format_data;
int ret;
#if HAVE_ZLIB_H
if (zip->entry_compression == COMPRESSION_DEFLATE) {
for (;;) {
size_t remainder;
ret = deflate(&zip->stream, Z_FINISH);
if (ret == Z_STREAM_ERROR)
return (ARCHIVE_FATAL);
remainder = zip->len_buf - zip->stream.avail_out;
ret = __archive_write_output(a, zip->buf, remainder);
if (ret != ARCHIVE_OK)
return (ret);
zip->entry_compressed_written += remainder;
zip->written_bytes += remainder;
zip->stream.next_out = zip->buf;
if (zip->stream.avail_out != 0)
break;
zip->stream.avail_out = (uInt)zip->len_buf;
}
deflateEnd(&zip->stream);
}
#endif
/* Write trailing data descriptor. */
if ((zip->entry_flags & ZIP_ENTRY_FLAG_LENGTH_AT_END) != 0) {
char d[24];
memcpy(d, "PK\007\010", 4);
archive_le32enc(d + 4, zip->entry_crc32);
if (zip->entry_uses_zip64) {
archive_le64enc(d + 8, (uint64_t)zip->entry_compressed_written);
archive_le64enc(d + 16, (uint64_t)zip->entry_uncompressed_written);
ret = __archive_write_output(a, d, 24);
zip->written_bytes += 24;
} else {
archive_le32enc(d + 8, (uint32_t)zip->entry_compressed_written);
archive_le32enc(d + 12, (uint32_t)zip->entry_uncompressed_written);
ret = __archive_write_output(a, d, 16);
zip->written_bytes += 16;
}
if (ret != ARCHIVE_OK)
return (ARCHIVE_FATAL);
}
/* Append Zip64 extra data to central directory information. */
if (zip->entry_compressed_written > ARCHIVE_LITERAL_LL(0xffffffff)
|| zip->entry_uncompressed_written > ARCHIVE_LITERAL_LL(0xffffffff)
|| zip->entry_offset > ARCHIVE_LITERAL_LL(0xffffffff)) {
unsigned char zip64[32];
unsigned char *z = zip64, *zd;
memcpy(z, "\001\000\000\000", 4);
z += 4;
if (zip->entry_uncompressed_written >= ARCHIVE_LITERAL_LL(0xffffffff)) {
archive_le64enc(z, zip->entry_uncompressed_written);
z += 8;
}
if (zip->entry_compressed_written >= ARCHIVE_LITERAL_LL(0xffffffff)) {
archive_le64enc(z, zip->entry_compressed_written);
z += 8;
}
if (zip->entry_offset >= ARCHIVE_LITERAL_LL(0xffffffff)) {
archive_le64enc(z, zip->entry_offset);
z += 8;
}
archive_le16enc(zip64 + 2, z - (zip64 + 4));
zd = cd_alloc(zip, z - zip64);
if (zd == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate zip data");
return (ARCHIVE_FATAL);
}
memcpy(zd, zip64, z - zip64);
/* Zip64 means version needs to be set to at least 4.5 */
if (archive_le16dec(zip->file_header + 6) < 45)
archive_le16enc(zip->file_header + 6, 45);
}
/* Fix up central directory file header. */
archive_le32enc(zip->file_header + 16, zip->entry_crc32);
archive_le32enc(zip->file_header + 20,
zipmin(zip->entry_compressed_written, ARCHIVE_LITERAL_LL(0xffffffff)));
archive_le32enc(zip->file_header + 24,
zipmin(zip->entry_uncompressed_written, ARCHIVE_LITERAL_LL(0xffffffff)));
archive_le16enc(zip->file_header + 30,
zip->central_directory_bytes - zip->file_header_extra_offset);
archive_le32enc(zip->file_header + 42,
zipmin(zip->entry_offset, ARCHIVE_LITERAL_LL(0xffffffff)));
return (ARCHIVE_OK);
}
static int
archive_write_zip_close(struct archive_write *a)
{
uint8_t buff[64];
int64_t offset_start, offset_end;
struct zip *zip = a->format_data;
struct cd_segment *segment;
int ret;
offset_start = zip->written_bytes;
segment = zip->central_directory;
while (segment != NULL) {
ret = __archive_write_output(a,
segment->buff, segment->p - segment->buff);
if (ret != ARCHIVE_OK)
return (ARCHIVE_FATAL);
zip->written_bytes += segment->p - segment->buff;
segment = segment->next;
}
offset_end = zip->written_bytes;
/* If central dir info is too large, write Zip64 end-of-cd */
if (offset_end - offset_start > ARCHIVE_LITERAL_LL(0xffffffff)
|| offset_start > ARCHIVE_LITERAL_LL(0xffffffff)
|| zip->central_directory_entries > 0xffffUL
|| (zip->flags & ZIP_FLAG_FORCE_ZIP64)) {
/* Zip64 end-of-cd record */
memset(buff, 0, 56);
memcpy(buff, "PK\006\006", 4);
archive_le64enc(buff + 4, 44);
archive_le16enc(buff + 12, 45);
archive_le16enc(buff + 14, 45);
/* This is disk 0 of 0. */
archive_le64enc(buff + 24, zip->central_directory_entries);
archive_le64enc(buff + 32, zip->central_directory_entries);
archive_le64enc(buff + 40, offset_end - offset_start);
archive_le64enc(buff + 48, offset_start);
ret = __archive_write_output(a, buff, 56);
if (ret != ARCHIVE_OK)
return (ARCHIVE_FATAL);
zip->written_bytes += 56;
/* Zip64 end-of-cd locator record. */
memset(buff, 0, 20);
memcpy(buff, "PK\006\007", 4);
archive_le32enc(buff + 4, 0);
archive_le64enc(buff + 8, offset_end);
archive_le32enc(buff + 16, 1);
ret = __archive_write_output(a, buff, 20);
if (ret != ARCHIVE_OK)
return (ARCHIVE_FATAL);
zip->written_bytes += 20;
}
/* Format and write end of central directory. */
memset(buff, 0, sizeof(buff));
memcpy(buff, "PK\005\006", 4);
archive_le16enc(buff + 8, zipmin(0xffffU, zip->central_directory_entries));
archive_le16enc(buff + 10, zipmin(0xffffU, zip->central_directory_entries));
archive_le32enc(buff + 12, (uint32_t)zipmin(ARCHIVE_LITERAL_LL(0xffffffff), (offset_end - offset_start)));
archive_le32enc(buff + 16, (uint32_t)zipmin(ARCHIVE_LITERAL_LL(0xffffffff), offset_start));
ret = __archive_write_output(a, buff, 22);
if (ret != ARCHIVE_OK)
return (ARCHIVE_FATAL);
zip->written_bytes += 22;
return (ARCHIVE_OK);
}
static int
archive_write_zip_header(struct archive_write *a, struct archive_entry *entry)
{
unsigned char local_header[32];
unsigned char local_extra[128];
struct zip *zip = a->format_data;
unsigned char *e;
unsigned char *cd_extra;
size_t filename_length;
const char *slink = NULL;
size_t slink_size = 0;
struct archive_string_conv *sconv = get_sconv(a, zip);
int ret, ret2 = ARCHIVE_OK;
int64_t size;
mode_t type;
int version_needed = 10;
/* Ignore types of entries that we don't support. */
type = archive_entry_filetype(entry);
if (type != AE_IFREG && type != AE_IFDIR && type != AE_IFLNK) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Filetype not supported");
return ARCHIVE_FAILED;
};
/* If we're not using Zip64, reject large files. */
if (zip->flags & ZIP_FLAG_AVOID_ZIP64) {
/* Reject entries over 4GB. */
if (archive_entry_size_is_set(entry)
&& (archive_entry_size(entry) > 0xffffffff)) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Files > 4GB require Zip64 extensions");
return ARCHIVE_FAILED;
}
/* Reject entries if archive is > 4GB. */
if (zip->written_bytes > 0xffffffff) {
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"Archives > 4GB require Zip64 extensions");
return ARCHIVE_FAILED;
}
}
/* Only regular files can have size > 0. */
if (type != AE_IFREG)
archive_entry_set_size(entry, 0);
/* Reset information from last entry. */
zip->entry_offset = zip->written_bytes;
zip->entry_uncompressed_limit = INT64_MAX;
zip->entry_compressed_size = 0;
zip->entry_uncompressed_size = 0;
zip->entry_compressed_written = 0;
zip->entry_uncompressed_written = 0;
zip->entry_flags = 0;
zip->entry_uses_zip64 = 0;
zip->entry_crc32 = zip->crc32func(0, NULL, 0);
if (zip->entry != NULL) {
archive_entry_free(zip->entry);
zip->entry = NULL;
}
#if defined(_WIN32) && !defined(__CYGWIN__)
/* Make sure the path separators in pahtname, hardlink and symlink
* are all slash '/', not the Windows path separator '\'. */
zip->entry = __la_win_entry_in_posix_pathseparator(entry);
if (zip->entry == entry)
zip->entry = archive_entry_clone(entry);
#else
zip->entry = archive_entry_clone(entry);
#endif
if (zip->entry == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate zip header data");
return (ARCHIVE_FATAL);
}
if (sconv != NULL) {
const char *p;
size_t len;
if (archive_entry_pathname_l(entry, &p, &len, sconv) != 0) {
if (errno == ENOMEM) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory for Pathname");
return (ARCHIVE_FATAL);
}
archive_set_error(&a->archive,
ARCHIVE_ERRNO_FILE_FORMAT,
"Can't translate Pathname '%s' to %s",
archive_entry_pathname(entry),
archive_string_conversion_charset_name(sconv));
ret2 = ARCHIVE_WARN;
}
if (len > 0)
archive_entry_set_pathname(zip->entry, p);
/*
* There is no standard for symlink handling; we convert
* it using the same character-set translation that we use
* for filename.
*/
if (type == AE_IFLNK) {
if (archive_entry_symlink_l(entry, &p, &len, sconv)) {
if (errno == ENOMEM) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory "
" for Symlink");
return (ARCHIVE_FATAL);
}
/* No error if we can't convert. */
} else if (len > 0)
archive_entry_set_symlink(zip->entry, p);
}
}
/* If filename isn't ASCII and we can use UTF-8, set the UTF-8 flag. */
if (!is_all_ascii(archive_entry_pathname(zip->entry))) {
if (zip->opt_sconv != NULL) {
if (strcmp(archive_string_conversion_charset_name(
zip->opt_sconv), "UTF-8") == 0)
zip->entry_flags |= ZIP_ENTRY_FLAG_UTF8_NAME;
#if HAVE_NL_LANGINFO
} else if (strcmp(nl_langinfo(CODESET), "UTF-8") == 0) {
zip->entry_flags |= ZIP_ENTRY_FLAG_UTF8_NAME;
#endif
}
}
filename_length = path_length(zip->entry);
/* Determine appropriate compression and size for this entry. */
if (type == AE_IFLNK) {
slink = archive_entry_symlink(zip->entry);
if (slink != NULL)
slink_size = strlen(slink);
else
slink_size = 0;
zip->entry_uncompressed_limit = slink_size;
zip->entry_compressed_size = slink_size;
zip->entry_uncompressed_size = slink_size;
zip->entry_crc32 = zip->crc32func(zip->entry_crc32,
(const unsigned char *)slink, slink_size);
zip->entry_compression = COMPRESSION_STORE;
version_needed = 20;
} else if (type != AE_IFREG) {
zip->entry_compression = COMPRESSION_STORE;
zip->entry_uncompressed_limit = 0;
size = 0;
version_needed = 20;
} else if (archive_entry_size_is_set(zip->entry)) {
size = archive_entry_size(zip->entry);
zip->entry_uncompressed_limit = size;
zip->entry_compression = zip->requested_compression;
if (zip->entry_compression == COMPRESSION_UNSPECIFIED) {
zip->entry_compression = COMPRESSION_DEFAULT;
}
if (zip->entry_compression == COMPRESSION_STORE) {
zip->entry_compressed_size = size;
zip->entry_uncompressed_size = size;
version_needed = 10;
} else {
zip->entry_uncompressed_size = size;
version_needed = 20;
}
if ((zip->flags & ZIP_FLAG_FORCE_ZIP64) /* User asked. */
|| (zip->entry_uncompressed_size > ARCHIVE_LITERAL_LL(0xffffffff))) { /* Large entry. */
zip->entry_uses_zip64 = 1;
version_needed = 45;
}
/* We may know the size, but never the CRC. */
zip->entry_flags |= ZIP_ENTRY_FLAG_LENGTH_AT_END;
} else {
/* Prefer deflate if it's available, because deflate
* has a clear end-of-data marker that makes
* length-at-end more reliable. */
zip->entry_compression = COMPRESSION_DEFAULT;
zip->entry_flags |= ZIP_ENTRY_FLAG_LENGTH_AT_END;
if ((zip->flags & ZIP_FLAG_AVOID_ZIP64) == 0) {
zip->entry_uses_zip64 = 1;
version_needed = 45;
} else if (zip->entry_compression == COMPRESSION_STORE) {
version_needed = 10;
} else {
version_needed = 20;
}
}
/* Format the local header. */
memset(local_header, 0, sizeof(local_header));
memcpy(local_header, "PK\003\004", 4);
archive_le16enc(local_header + 4, version_needed);
archive_le16enc(local_header + 6, zip->entry_flags);
archive_le16enc(local_header + 8, zip->entry_compression);
archive_le32enc(local_header + 10, dos_time(archive_entry_mtime(zip->entry)));
archive_le32enc(local_header + 14, zip->entry_crc32);
if (zip->entry_uses_zip64) {
/* Zip64 data in the local header "must" include both
* compressed and uncompressed sizes AND those fields
* are included only if these are 0xffffffff;
* THEREFORE these must be set this way, even if we
* know one of them is smaller. */
archive_le32enc(local_header + 18, ARCHIVE_LITERAL_LL(0xffffffff));
archive_le32enc(local_header + 22, ARCHIVE_LITERAL_LL(0xffffffff));
} else {
archive_le32enc(local_header + 18, zip->entry_compressed_size);
archive_le32enc(local_header + 22, zip->entry_uncompressed_size);
}
archive_le16enc(local_header + 26, filename_length);
/* Format as much of central directory file header as we can: */
zip->file_header = cd_alloc(zip, 46);
/* If (zip->file_header == NULL) XXXX */
++zip->central_directory_entries;
memset(zip->file_header, 0, 46);
memcpy(zip->file_header, "PK\001\002", 4);
/* "Made by PKZip 2.0 on Unix." */
archive_le16enc(zip->file_header + 4, 3 * 256 + version_needed);
archive_le16enc(zip->file_header + 6, version_needed);
archive_le16enc(zip->file_header + 8, zip->entry_flags);
archive_le16enc(zip->file_header + 10, zip->entry_compression);
archive_le32enc(zip->file_header + 12, dos_time(archive_entry_mtime(zip->entry)));
archive_le16enc(zip->file_header + 28, filename_length);
/* Following Info-Zip, store mode in the "external attributes" field. */
archive_le32enc(zip->file_header + 38,
((uint32_t)archive_entry_mode(zip->entry)) << 16);
e = cd_alloc(zip, filename_length);
/* If (e == NULL) XXXX */
copy_path(zip->entry, e);
/* Format extra data. */
memset(local_extra, 0, sizeof(local_extra));
e = local_extra;
/* First, extra blocks that are the same between
* the local file header and the central directory.
* We format them once and then duplicate them. */
/* UT timestamp, length depends on what timestamps are set. */
memcpy(e, "UT", 2);
archive_le16enc(e + 2,
1
+ (archive_entry_mtime_is_set(entry) ? 4 : 0)
+ (archive_entry_atime_is_set(entry) ? 4 : 0)
+ (archive_entry_ctime_is_set(entry) ? 4 : 0));
e += 4;
*e++ =
(archive_entry_mtime_is_set(entry) ? 1 : 0)
| (archive_entry_atime_is_set(entry) ? 2 : 0)
| (archive_entry_ctime_is_set(entry) ? 4 : 0);
if (archive_entry_mtime_is_set(entry)) {
archive_le32enc(e, (uint32_t)archive_entry_mtime(entry));
e += 4;
}
if (archive_entry_atime_is_set(entry)) {
archive_le32enc(e, (uint32_t)archive_entry_atime(entry));
e += 4;
}
if (archive_entry_ctime_is_set(entry)) {
archive_le32enc(e, (uint32_t)archive_entry_ctime(entry));
e += 4;
}
/* ux Unix extra data, length 11, version 1 */
/* TODO: If uid < 64k, use 2 bytes, ditto for gid. */
memcpy(e, "ux\013\000\001", 5);
e += 5;
*e++ = 4; /* Length of following UID */
archive_le32enc(e, (uint32_t)archive_entry_uid(entry));
e += 4;
*e++ = 4; /* Length of following GID */
archive_le32enc(e, (uint32_t)archive_entry_gid(entry));
e += 4;
/* Copy UT and ux into central directory as well. */
zip->file_header_extra_offset = zip->central_directory_bytes;
cd_extra = cd_alloc(zip, e - local_extra);
memcpy(cd_extra, local_extra, e - local_extra);
/*
* Following extra blocks vary between local header and
* central directory. These are the local header versions.
* Central directory versions get formatted in
* archive_write_zip_finish_entry() below.
*/
/* "[Zip64 entry] in the local header MUST include BOTH
* original [uncompressed] and compressed size fields." */
if (zip->entry_uses_zip64) {
unsigned char *zip64_start = e;
memcpy(e, "\001\000\020\000", 4);
e += 4;
archive_le64enc(e, zip->entry_uncompressed_size);
e += 8;
archive_le64enc(e, zip->entry_compressed_size);
e += 8;
archive_le16enc(zip64_start + 2, e - (zip64_start + 4));
}
if (zip->flags & ZIP_FLAG_EXPERIMENT_EL) {
/* Experimental 'el' extension to improve streaming. */
unsigned char *external_info = e;
int included = 7;
memcpy(e, "el\000\000", 4); // 0x6c65 + 2-byte length
e += 4;
e[0] = included; /* bitmap of included fields */
e += 1;
if (included & 1) {
archive_le16enc(e, /* "Version created by" */
3 * 256 + version_needed);
e += 2;
}
if (included & 2) {
archive_le16enc(e, 0); /* internal file attributes */
e += 2;
}
if (included & 4) {
archive_le32enc(e, /* external file attributes */
((uint32_t)archive_entry_mode(zip->entry)) << 16);
e += 4;
}
if (included & 8) {
// Libarchive does not currently support file comments.
}
archive_le16enc(external_info + 2, e - (external_info + 4));
}
/* Update local header with size of extra data and write it all out: */
archive_le16enc(local_header + 28, e - local_extra);
ret = __archive_write_output(a, local_header, 30);
if (ret != ARCHIVE_OK)
return (ARCHIVE_FATAL);
zip->written_bytes += 30;
ret = write_path(zip->entry, a);
if (ret <= ARCHIVE_OK)
return (ARCHIVE_FATAL);
zip->written_bytes += ret;
ret = __archive_write_output(a, local_extra, e - local_extra);
if (ret != ARCHIVE_OK)
return (ARCHIVE_FATAL);
zip->written_bytes += e - local_extra;
/* For symlinks, write the body now. */
if (slink != NULL) {
ret = __archive_write_output(a, slink, slink_size);
if (ret != ARCHIVE_OK)
return (ARCHIVE_FATAL);
zip->entry_compressed_written += slink_size;
zip->entry_uncompressed_written += slink_size;
zip->written_bytes += slink_size;
}
#ifdef HAVE_ZLIB_H
if (zip->entry_compression == COMPRESSION_DEFLATE) {
zip->stream.zalloc = Z_NULL;
zip->stream.zfree = Z_NULL;
zip->stream.opaque = Z_NULL;
zip->stream.next_out = zip->buf;
zip->stream.avail_out = (uInt)zip->len_buf;
if (deflateInit2(&zip->stream, Z_DEFAULT_COMPRESSION,
Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY) != Z_OK) {
archive_set_error(&a->archive, ENOMEM,
"Can't init deflate compressor");
return (ARCHIVE_FATAL);
}
}
#endif
return (ret2);
}
