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zlib 1.2.2.2

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This commit is contained in:
Mark Adler
2011-09-09 23:24:33 -07:00
parent 9811b53dd9
commit 0484693e17
39 changed files with 2178 additions and 177 deletions
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16
inflate.c
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@@ -113,6 +113,7 @@ z_streamp strm;
state->mode = HEAD;
state->last = 0;
state->havedict = 0;
state->dmax = 32768U;
state->head = Z_NULL;
state->wsize = 0;
state->whave = 0;
@@ -600,11 +601,13 @@ int flush;
break;
}
DROPBITS(4);
if (BITS(4) + 8 > state->wbits) {
len = BITS(4) + 8;
if (len > state->wbits) {
strm->msg = (char *)"invalid window size";
state->mode = BAD;
break;
}
state->dmax = 1U << len;
Tracev((stderr, "inflate: zlib header ok\n"));
strm->adler = state->check = adler32(0L, Z_NULL, 0);
state->mode = hold & 0x200 ? DICTID : TYPE;
@@ -1009,6 +1012,13 @@ int flush;
state->offset += BITS(state->extra);
DROPBITS(state->extra);
}
#ifdef INFLATE_STRICT
if (state->offset > state->dmax) {
strm->msg = (char *)"invalid distance too far back";
state->mode = BAD;
break;
}
#endif
if (state->offset > state->whave + out - left) {
strm->msg = (char *)"invalid distance too far back";
state->mode = BAD;
@@ -1322,8 +1332,8 @@ z_streamp source;
}
/* copy state */
*dest = *source;
*copy = *state;
zmemcpy(dest, source, sizeof(z_stream));
zmemcpy(copy, state, sizeof(struct inflate_state));
copy->lencode = copy->codes + (state->lencode - state->codes);
copy->distcode = copy->codes + (state->distcode - state->codes);
copy->next = copy->codes + (state->next - state->codes);