rulimine/decompressor/tinf.patch

265 lines
5.8 KiB
Diff

diff '--color=auto' -urN tinf-clean/tinf.h decompressor/tinf/tinf.h
--- tinf-clean/tinf.h 2023-06-06 00:57:04.683481827 +0200
+++ decompressor/tinf/tinf.h 2023-06-06 00:56:14.485629430 +0200
@@ -59,7 +59,9 @@
*
* @deprecated No longer required, may be removed in a future version.
*/
+/*
void TINFCC tinf_init(void);
+*/
/**
* Decompress `sourceLen` bytes of deflate data from `source` to `dest`.
@@ -76,7 +78,7 @@
* @param sourceLen size of compressed data
* @return `TINF_OK` on success, error code on error
*/
-int TINFCC tinf_uncompress(void *dest, unsigned int *destLen,
+int TINFCC tinf_uncompress(void *dest,
const void *source, unsigned int sourceLen);
/**
@@ -94,7 +96,7 @@
* @param sourceLen size of compressed data
* @return `TINF_OK` on success, error code on error
*/
-int TINFCC tinf_gzip_uncompress(void *dest, unsigned int *destLen,
+int TINFCC tinf_gzip_uncompress(void *dest,
const void *source, unsigned int sourceLen);
/**
@@ -112,8 +114,10 @@
* @param sourceLen size of compressed data
* @return `TINF_OK` on success, error code on error
*/
+/*
int TINFCC tinf_zlib_uncompress(void *dest, unsigned int *destLen,
const void *source, unsigned int sourceLen);
+*/
/**
* Compute Adler-32 checksum of `length` bytes starting at `data`.
@@ -122,7 +126,9 @@
* @param length size of data
* @return Adler-32 checksum
*/
+/*
unsigned int TINFCC tinf_adler32(const void *data, unsigned int length);
+*/
/**
* Compute CRC32 checksum of `length` bytes starting at `data`.
@@ -131,7 +137,9 @@
* @param length size of data
* @return CRC32 checksum
*/
+/*
unsigned int TINFCC tinf_crc32(const void *data, unsigned int length);
+*/
#ifdef __cplusplus
} /* extern "C" */
diff '--color=auto' -urN tinf-clean/tinfgzip.c decompressor/tinf/tinfgzip.c
--- tinf-clean/tinfgzip.c 2023-06-06 00:57:16.983772372 +0200
+++ decompressor/tinf/tinfgzip.c 2023-06-06 01:09:39.119942087 +0200
@@ -39,6 +39,8 @@
| ((unsigned int) p[1] << 8);
}
+/*
+
static unsigned int read_le32(const unsigned char *p)
{
return ((unsigned int) p[0])
@@ -47,13 +49,17 @@
| ((unsigned int) p[3] << 24);
}
-int tinf_gzip_uncompress(void *dest, unsigned int *destLen,
+*/
+
+int tinf_gzip_uncompress(void *dest,
const void *source, unsigned int sourceLen)
{
const unsigned char *src = (const unsigned char *) source;
unsigned char *dst = (unsigned char *) dest;
const unsigned char *start;
+/*
unsigned int dlen, crc32;
+*/
int res;
unsigned char flg;
@@ -101,7 +107,7 @@
/* Skip file name if present */
if (flg & FNAME) {
do {
- if (start - src >= sourceLen) {
+ if (((unsigned int)(start - src)) >= sourceLen) {
return TINF_DATA_ERROR;
}
} while (*start++);
@@ -110,7 +116,7 @@
/* Skip file comment if present */
if (flg & FCOMMENT) {
do {
- if (start - src >= sourceLen) {
+ if (((unsigned int)(start - src)) >= sourceLen) {
return TINF_DATA_ERROR;
}
} while (*start++);
@@ -118,6 +124,7 @@
/* Check header crc if present */
if (flg & FHCRC) {
+/*
unsigned int hcrc;
if (start - src > sourceLen - 2) {
@@ -129,10 +136,12 @@
if (hcrc != (tinf_crc32(src, start - src) & 0x0000FFFF)) {
return TINF_DATA_ERROR;
}
+*/
start += 2;
}
+#if 0
/* -- Get decompressed length -- */
dlen = read_le32(&src[sourceLen - 4]);
@@ -144,6 +153,7 @@
/* -- Get CRC32 checksum of original data -- */
crc32 = read_le32(&src[sourceLen - 8]);
+#endif
/* -- Decompress data -- */
@@ -151,13 +161,14 @@
return TINF_DATA_ERROR;
}
- res = tinf_uncompress(dst, destLen, start,
+ res = tinf_uncompress(dst, start,
(src + sourceLen) - start - 8);
if (res != TINF_OK) {
return TINF_DATA_ERROR;
}
+#if 0
if (*destLen != dlen) {
return TINF_DATA_ERROR;
}
@@ -167,6 +178,7 @@
if (crc32 != tinf_crc32(dst, dlen)) {
return TINF_DATA_ERROR;
}
+#endif
return TINF_OK;
}
diff '--color=auto' -urN tinf-clean/tinflate.c decompressor/tinf/tinflate.c
--- tinf-clean/tinflate.c 2023-06-06 00:57:10.746958386 +0200
+++ decompressor/tinf/tinflate.c 2023-06-06 01:12:19.629674294 +0200
@@ -25,7 +25,7 @@
#include "tinf.h"
-#include <assert.h>
+#define assert(...)
#include <limits.h>
#if defined(UINT_MAX) && (UINT_MAX) < 0xFFFFFFFFUL
@@ -49,7 +49,9 @@
unsigned char *dest_start;
unsigned char *dest;
+/*
unsigned char *dest_end;
+*/
struct tinf_tree ltree; /* Literal/length tree */
struct tinf_tree dtree; /* Distance tree */
@@ -425,9 +427,12 @@
}
if (sym < 256) {
+/*
if (d->dest == d->dest_end) {
return TINF_BUF_ERROR;
}
+*/
+
*d->dest++ = sym;
}
else {
@@ -465,9 +470,11 @@
return TINF_DATA_ERROR;
}
+/*
if (d->dest_end - d->dest < length) {
return TINF_BUF_ERROR;
}
+*/
/* Copy match */
for (i = 0; i < length; ++i) {
@@ -501,6 +508,7 @@
d->source += 4;
+/*
if (d->source_end - d->source < length) {
return TINF_DATA_ERROR;
}
@@ -508,6 +516,7 @@
if (d->dest_end - d->dest < length) {
return TINF_BUF_ERROR;
}
+*/
/* Copy block */
while (length--) {
@@ -548,13 +557,15 @@
/* -- Public functions -- */
/* Initialize global (static) data */
+/*
void tinf_init(void)
{
return;
}
+*/
/* Inflate stream from source to dest */
-int tinf_uncompress(void *dest, unsigned int *destLen,
+int tinf_uncompress(void *dest,
const void *source, unsigned int sourceLen)
{
struct tinf_data d;
@@ -569,7 +580,9 @@
d.dest = (unsigned char *) dest;
d.dest_start = d.dest;
+/*
d.dest_end = d.dest + *destLen;
+*/
do {
unsigned int btype;
@@ -610,7 +623,9 @@
return TINF_DATA_ERROR;
}
+/*
*destLen = d.dest - d.dest_start;
+*/
return TINF_OK;
}