From bbe396d90d6cf292c18017129e4f9f619c406f32 Mon Sep 17 00:00:00 2001 From: TraoX_ <140246452+Trao-X@users.noreply.github.com> Date: Sat, 7 Mar 2026 21:56:03 +0200 Subject: Update to zlib 1.3.2 (#852) --- Minecraft.Client/Common/zlib/uncompr.c | 160 +++++++++++++++++++++------------ 1 file changed, 101 insertions(+), 59 deletions(-) (limited to 'Minecraft.Client/Common/zlib/uncompr.c') diff --git a/Minecraft.Client/Common/zlib/uncompr.c b/Minecraft.Client/Common/zlib/uncompr.c index 242e9493..440879d6 100644 --- a/Minecraft.Client/Common/zlib/uncompr.c +++ b/Minecraft.Client/Common/zlib/uncompr.c @@ -1,59 +1,101 @@ -/* uncompr.c -- decompress a memory buffer - * Copyright (C) 1995-2003, 2010 Jean-loup Gailly. - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#define ZLIB_INTERNAL -#include "zlib.h" - -/* =========================================================================== - Decompresses the source buffer into the destination buffer. sourceLen is - the byte length of the source buffer. Upon entry, destLen is the total - size of the destination buffer, which must be large enough to hold the - entire uncompressed data. (The size of the uncompressed data must have - been saved previously by the compressor and transmitted to the decompressor - by some mechanism outside the scope of this compression library.) - Upon exit, destLen is the actual size of the compressed buffer. - - uncompress returns Z_OK if success, Z_MEM_ERROR if there was not - enough memory, Z_BUF_ERROR if there was not enough room in the output - buffer, or Z_DATA_ERROR if the input data was corrupted. -*/ -int ZEXPORT uncompress (dest, destLen, source, sourceLen) - Bytef *dest; - uLongf *destLen; - const Bytef *source; - uLong sourceLen; -{ - z_stream stream; - int err; - - stream.next_in = (z_const Bytef *)source; - stream.avail_in = (uInt)sourceLen; - /* Check for source > 64K on 16-bit machine: */ - if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR; - - stream.next_out = dest; - stream.avail_out = (uInt)*destLen; - if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; - - stream.zalloc = (alloc_func)0; - stream.zfree = (free_func)0; - - err = inflateInit(&stream); - if (err != Z_OK) return err; - - err = inflate(&stream, Z_FINISH); - if (err != Z_STREAM_END) { - inflateEnd(&stream); - if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0)) - return Z_DATA_ERROR; - return err; - } - *destLen = stream.total_out; - - err = inflateEnd(&stream); - return err; -} +/* uncompr.c -- decompress a memory buffer + * Copyright (C) 1995-2026 Jean-loup Gailly, Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#define ZLIB_INTERNAL +#include "zlib.h" + +/* =========================================================================== + Decompresses the source buffer into the destination buffer. *sourceLen is + the byte length of the source buffer. Upon entry, *destLen is the total size + of the destination buffer, which must be large enough to hold the entire + uncompressed data. (The size of the uncompressed data must have been saved + previously by the compressor and transmitted to the decompressor by some + mechanism outside the scope of this compression library.) Upon exit, + *destLen is the size of the decompressed data and *sourceLen is the number + of source bytes consumed. Upon return, source + *sourceLen points to the + first unused input byte. + + uncompress returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_BUF_ERROR if there was not enough room in the output buffer, or + Z_DATA_ERROR if the input data was corrupted, including if the input data is + an incomplete zlib stream. + + The _z versions of the functions take size_t length arguments. +*/ +int ZEXPORT uncompress2_z(Bytef *dest, z_size_t *destLen, const Bytef *source, + z_size_t *sourceLen) { + z_stream stream; + int err; + const uInt max = (uInt)-1; + z_size_t len, left; + + if (sourceLen == NULL || (*sourceLen > 0 && source == NULL) || + destLen == NULL || (*destLen > 0 && dest == NULL)) + return Z_STREAM_ERROR; + + len = *sourceLen; + left = *destLen; + if (left == 0 && dest == Z_NULL) + dest = (Bytef *)&stream.reserved; /* next_out cannot be NULL */ + + stream.next_in = (z_const Bytef *)source; + stream.avail_in = 0; + stream.zalloc = (alloc_func)0; + stream.zfree = (free_func)0; + stream.opaque = (voidpf)0; + + err = inflateInit(&stream); + if (err != Z_OK) return err; + + stream.next_out = dest; + stream.avail_out = 0; + + do { + if (stream.avail_out == 0) { + stream.avail_out = left > (z_size_t)max ? max : (uInt)left; + left -= stream.avail_out; + } + if (stream.avail_in == 0) { + stream.avail_in = len > (z_size_t)max ? max : (uInt)len; + len -= stream.avail_in; + } + err = inflate(&stream, Z_NO_FLUSH); + } while (err == Z_OK); + + /* Set len and left to the unused input data and unused output space. Set + *sourceLen to the amount of input consumed. Set *destLen to the amount + of data produced. */ + len += stream.avail_in; + left += stream.avail_out; + *sourceLen -= len; + *destLen -= left; + + inflateEnd(&stream); + return err == Z_STREAM_END ? Z_OK : + err == Z_NEED_DICT ? Z_DATA_ERROR : + err == Z_BUF_ERROR && len == 0 ? Z_DATA_ERROR : + err; +} +int ZEXPORT uncompress2(Bytef *dest, uLongf *destLen, const Bytef *source, + uLong *sourceLen) { + int ret; + z_size_t got = *destLen, used = *sourceLen; + ret = uncompress2_z(dest, &got, source, &used); + *sourceLen = (uLong)used; + *destLen = (uLong)got; + return ret; +} +int ZEXPORT uncompress_z(Bytef *dest, z_size_t *destLen, const Bytef *source, + z_size_t sourceLen) { + z_size_t used = sourceLen; + return uncompress2_z(dest, destLen, source, &used); +} +int ZEXPORT uncompress(Bytef *dest, uLongf *destLen, const Bytef *source, + uLong sourceLen) { + uLong used = sourceLen; + return uncompress2(dest, destLen, source, &used); +} -- cgit v1.2.3