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-rw-r--r--dep/zlib/inflate.c90
1 files changed, 53 insertions, 37 deletions
diff --git a/dep/zlib/inflate.c b/dep/zlib/inflate.c
index a8431abeacf..47418a1e1e1 100644
--- a/dep/zlib/inflate.c
+++ b/dep/zlib/inflate.c
@@ -1,5 +1,5 @@
/* inflate.c -- zlib decompression
- * Copyright (C) 1995-2010 Mark Adler
+ * Copyright (C) 1995-2012 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@@ -100,7 +100,7 @@ local int updatewindow OF((z_streamp strm, unsigned out));
local unsigned syncsearch OF((unsigned FAR *have, unsigned char FAR *buf,
unsigned len));
-int ZEXPORT inflateReset(strm)
+int ZEXPORT inflateResetKeep(strm)
z_streamp strm;
{
struct inflate_state FAR *state;
@@ -109,15 +109,13 @@ z_streamp strm;
state = (struct inflate_state FAR *)strm->state;
strm->total_in = strm->total_out = state->total = 0;
strm->msg = Z_NULL;
- strm->adler = 1; /* to support ill-conceived Java test suite */
+ if (state->wrap) /* to support ill-conceived Java test suite */
+ strm->adler = state->wrap & 1;
state->mode = HEAD;
state->last = 0;
state->havedict = 0;
state->dmax = 32768U;
state->head = Z_NULL;
- state->wsize = 0;
- state->whave = 0;
- state->wnext = 0;
state->hold = 0;
state->bits = 0;
state->lencode = state->distcode = state->next = state->codes;
@@ -127,6 +125,19 @@ z_streamp strm;
return Z_OK;
}
+int ZEXPORT inflateReset(strm)
+z_streamp strm;
+{
+ struct inflate_state FAR *state;
+
+ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
+ state = (struct inflate_state FAR *)strm->state;
+ state->wsize = 0;
+ state->whave = 0;
+ state->wnext = 0;
+ return inflateResetKeep(strm);
+}
+
int ZEXPORT inflateReset2(strm, windowBits)
z_streamp strm;
int windowBits;
@@ -180,10 +191,19 @@ int stream_size;
if (strm == Z_NULL) return Z_STREAM_ERROR;
strm->msg = Z_NULL; /* in case we return an error */
if (strm->zalloc == (alloc_func)0) {
+#ifdef Z_SOLO
+ return Z_STREAM_ERROR;
+#else
strm->zalloc = zcalloc;
strm->opaque = (voidpf)0;
+#endif
}
- if (strm->zfree == (free_func)0) strm->zfree = zcfree;
+ if (strm->zfree == (free_func)0)
+#ifdef Z_SOLO
+ return Z_STREAM_ERROR;
+#else
+ strm->zfree = zcfree;
+#endif
state = (struct inflate_state FAR *)
ZALLOC(strm, 1, sizeof(struct inflate_state));
if (state == Z_NULL) return Z_MEM_ERROR;
@@ -321,8 +341,8 @@ void makefixed()
low = 0;
for (;;) {
if ((low % 7) == 0) printf("\n ");
- printf("{%u,%u,%d}", state.lencode[low].op, state.lencode[low].bits,
- state.lencode[low].val);
+ printf("{%u,%u,%d}", (low & 127) == 99 ? 64 : state.lencode[low].op,
+ state.lencode[low].bits, state.lencode[low].val);
if (++low == size) break;
putchar(',');
}
@@ -499,11 +519,6 @@ unsigned out;
bits -= bits & 7; \
} while (0)
-/* Reverse the bytes in a 32-bit value */
-#define REVERSE(q) \
- ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
- (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
-
/*
inflate() uses a state machine to process as much input data and generate as
much output data as possible before returning. The state machine is
@@ -797,7 +812,7 @@ int flush;
#endif
case DICTID:
NEEDBITS(32);
- strm->adler = state->check = REVERSE(hold);
+ strm->adler = state->check = ZSWAP32(hold);
INITBITS();
state->mode = DICT;
case DICT:
@@ -925,7 +940,6 @@ int flush;
PULLBYTE();
}
if (here.val < 16) {
- NEEDBITS(here.bits);
DROPBITS(here.bits);
state->lens[state->have++] = here.val;
}
@@ -1170,7 +1184,7 @@ int flush;
#ifdef GUNZIP
state->flags ? hold :
#endif
- REVERSE(hold)) != state->check) {
+ ZSWAP32(hold)) != state->check) {
strm->msg = (char *)"incorrect data check";
state->mode = BAD;
break;
@@ -1214,7 +1228,8 @@ int flush;
*/
inf_leave:
RESTORE();
- if (state->wsize || (state->mode < CHECK && out != strm->avail_out))
+ if (state->wsize || (out != strm->avail_out && state->mode < BAD &&
+ (state->mode < CHECK || flush != Z_FINISH)))
if (updatewindow(strm, out)) {
state->mode = MEM;
return Z_MEM_ERROR;
@@ -1255,7 +1270,10 @@ const Bytef *dictionary;
uInt dictLength;
{
struct inflate_state FAR *state;
- unsigned long id;
+ unsigned long dictid;
+ unsigned char *next;
+ unsigned avail;
+ int ret;
/* check state */
if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
@@ -1263,29 +1281,27 @@ uInt dictLength;
if (state->wrap != 0 && state->mode != DICT)
return Z_STREAM_ERROR;
- /* check for correct dictionary id */
+ /* check for correct dictionary identifier */
if (state->mode == DICT) {
- id = adler32(0L, Z_NULL, 0);
- id = adler32(id, dictionary, dictLength);
- if (id != state->check)
+ dictid = adler32(0L, Z_NULL, 0);
+ dictid = adler32(dictid, dictionary, dictLength);
+ if (dictid != state->check)
return Z_DATA_ERROR;
}
- /* copy dictionary to window */
- if (updatewindow(strm, strm->avail_out)) {
+ /* copy dictionary to window using updatewindow(), which will amend the
+ existing dictionary if appropriate */
+ next = strm->next_out;
+ avail = strm->avail_out;
+ strm->next_out = (Bytef *)dictionary + dictLength;
+ strm->avail_out = 0;
+ ret = updatewindow(strm, dictLength);
+ strm->avail_out = avail;
+ strm->next_out = next;
+ if (ret) {
state->mode = MEM;
return Z_MEM_ERROR;
}
- if (dictLength > state->wsize) {
- zmemcpy(state->window, dictionary + dictLength - state->wsize,
- state->wsize);
- state->whave = state->wsize;
- }
- else {
- zmemcpy(state->window + state->wsize - dictLength, dictionary,
- dictLength);
- state->whave = dictLength;
- }
state->havedict = 1;
Tracev((stderr, "inflate: dictionary set\n"));
return Z_OK;
@@ -1433,8 +1449,8 @@ z_streamp source;
}
/* copy state */
- zmemcpy(dest, source, sizeof(z_stream));
- zmemcpy(copy, state, sizeof(struct inflate_state));
+ zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream));
+ zmemcpy((voidpf)copy, (voidpf)state, sizeof(struct inflate_state));
if (state->lencode >= state->codes &&
state->lencode <= state->codes + ENOUGH - 1) {
copy->lencode = copy->codes + (state->lencode - state->codes);