aboutsummaryrefslogtreecommitdiff
path: root/zlib/inflate.h
diff options
context:
space:
mode:
authormarha <marha@users.sourceforge.net>2012-06-22 15:56:58 +0200
committermarha <marha@users.sourceforge.net>2012-06-22 15:56:58 +0200
commit66841fa144ddd72df67ab1ddf880ca508d4bc9e3 (patch)
tree7cf0afebcfa94bcc8b2046c85532efcf6b0f91d0 /zlib/inflate.h
parent1a68b7aceea62a76127f0fa13b3f127e37b2ec76 (diff)
parent7baa3d795c87c11550f1686488c968320428cbf9 (diff)
downloadvcxsrv-66841fa144ddd72df67ab1ddf880ca508d4bc9e3.tar.gz
vcxsrv-66841fa144ddd72df67ab1ddf880ca508d4bc9e3.tar.bz2
vcxsrv-66841fa144ddd72df67ab1ddf880ca508d4bc9e3.zip
Merge remote-tracking branch 'origin/released'
Conflicts: zlib/Makefile
Diffstat (limited to 'zlib/inflate.h')
-rw-r--r--zlib/inflate.h31
1 files changed, 19 insertions, 12 deletions
diff --git a/zlib/inflate.h b/zlib/inflate.h
index 07bd3e78a..95f4986d4 100644
--- a/zlib/inflate.h
+++ b/zlib/inflate.h
@@ -1,5 +1,5 @@
/* inflate.h -- internal inflate state definition
- * Copyright (C) 1995-2004 Mark Adler
+ * Copyright (C) 1995-2009 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@@ -32,11 +32,13 @@ typedef enum {
TYPE, /* i: waiting for type bits, including last-flag bit */
TYPEDO, /* i: same, but skip check to exit inflate on new block */
STORED, /* i: waiting for stored size (length and complement) */
+ COPY_, /* i/o: same as COPY below, but only first time in */
COPY, /* i/o: waiting for input or output to copy stored block */
TABLE, /* i: waiting for dynamic block table lengths */
LENLENS, /* i: waiting for code length code lengths */
CODELENS, /* i: waiting for length/lit and distance code lengths */
- LEN, /* i: waiting for length/lit code */
+ LEN_, /* i: same as LEN below, but only first time in */
+ LEN, /* i: waiting for length/lit/eob code */
LENEXT, /* i: waiting for length extra bits */
DIST, /* i: waiting for distance code */
DISTEXT, /* i: waiting for distance extra bits */
@@ -53,19 +55,21 @@ typedef enum {
/*
State transitions between above modes -
- (most modes can go to the BAD or MEM mode -- not shown for clarity)
+ (most modes can go to BAD or MEM on error -- not shown for clarity)
Process header:
- HEAD -> (gzip) or (zlib)
- (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME
- NAME -> COMMENT -> HCRC -> TYPE
+ HEAD -> (gzip) or (zlib) or (raw)
+ (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT ->
+ HCRC -> TYPE
(zlib) -> DICTID or TYPE
DICTID -> DICT -> TYPE
+ (raw) -> TYPEDO
Read deflate blocks:
- TYPE -> STORED or TABLE or LEN or CHECK
- STORED -> COPY -> TYPE
- TABLE -> LENLENS -> CODELENS -> LEN
- Read deflate codes:
+ TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK
+ STORED -> COPY_ -> COPY -> TYPE
+ TABLE -> LENLENS -> CODELENS -> LEN_
+ LEN_ -> LEN
+ Read deflate codes in fixed or dynamic block:
LEN -> LENEXT or LIT or TYPE
LENEXT -> DIST -> DISTEXT -> MATCH -> LEN
LIT -> LEN
@@ -73,7 +77,7 @@ typedef enum {
CHECK -> LENGTH -> DONE
*/
-/* state maintained between inflate() calls. Approximately 7K bytes. */
+/* state maintained between inflate() calls. Approximately 10K bytes. */
struct inflate_state {
inflate_mode mode; /* current inflate mode */
int last; /* true if processing last block */
@@ -88,7 +92,7 @@ struct inflate_state {
unsigned wbits; /* log base 2 of requested window size */
unsigned wsize; /* window size or zero if not using window */
unsigned whave; /* valid bytes in the window */
- unsigned write; /* window write index */
+ unsigned wnext; /* window write index */
unsigned char FAR *window; /* allocated sliding window, if needed */
/* bit accumulator */
unsigned long hold; /* input bit accumulator */
@@ -112,4 +116,7 @@ struct inflate_state {
unsigned short lens[320]; /* temporary storage for code lengths */
unsigned short work[288]; /* work area for code table building */
code codes[ENOUGH]; /* space for code tables */
+ int sane; /* if false, allow invalid distance too far */
+ int back; /* bits back of last unprocessed length/lit */
+ unsigned was; /* initial length of match */
};