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decomp: increase decompression buffer sizes

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This commit is contained in:
TJ Saunders
2010-11-03 14:45:52 +01:00
committed by Daniel Stenberg
parent 8974dc05ae
commit 7603c0f854
1 changed files with 4 additions and 4 deletions
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8
src/comp.c
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@@ -233,7 +233,7 @@ comp_method_zlib_decomp(LIBSSH2_SESSION * session,
/* A short-term alloc of a full data chunk is better than a series of /* A short-term alloc of a full data chunk is better than a series of
reallocs */ reallocs */
char *out; char *out;
int out_maxlen = compress ? (src_len + 4) : (2 * src_len); int out_maxlen = compress ? (src_len + 4) : (8 * src_len);
int limiter = 0; int limiter = 0;
/* If strm is null, then we have not yet been initialized. */ /* If strm is null, then we have not yet been initialized. */
@@ -284,7 +284,7 @@ comp_method_zlib_decomp(LIBSSH2_SESSION * session,
char *newout; char *newout;
out_maxlen += out_maxlen +=
compress ? (strm->avail_in + 4) : (2 * strm->avail_in); compress ? (strm->avail_in + 4) : (8 * strm->avail_in);
if ((out_maxlen > (int) payload_limit) && !compress && limiter++) { if ((out_maxlen > (int) payload_limit) && !compress && limiter++) {
LIBSSH2_FREE(session, out); LIBSSH2_FREE(session, out);
@@ -302,14 +302,14 @@ comp_method_zlib_decomp(LIBSSH2_SESSION * session,
out = newout; out = newout;
strm->next_out = (unsigned char *) out + out_ofs; strm->next_out = (unsigned char *) out + out_ofs;
strm->avail_out += strm->avail_out +=
compress ? (strm->avail_in + 4) : (2 * strm->avail_in); compress ? (strm->avail_in + 4) : (8 * strm->avail_in);
} else } else
while (!strm->avail_out) { while (!strm->avail_out) {
/* Done with input, might be a byte or two in internal buffer /* Done with input, might be a byte or two in internal buffer
* during compress. Or potentially many bytes if it's a * during compress. Or potentially many bytes if it's a
* decompress * decompress
*/ */
int grow_size = compress ? 8 : 1024; int grow_size = compress ? 8 : 2048;
char *newout; char *newout;
if (out_maxlen >= (int) payload_limit) { if (out_maxlen >= (int) payload_limit) {