diff options
| -rw-r--r-- | src/lua/lua_util.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/lua/lua_util.c b/src/lua/lua_util.c index a378c1ace..d89cfd28d 100644 --- a/src/lua/lua_util.c +++ b/src/lua/lua_util.c @@ -2321,7 +2321,8 @@ lua_util_gzip_compress (lua_State *L) break; } else { - msg_err ("cannot compress data: %s", zError (rc)); + msg_err ("cannot compress data: %s (last error: %s)", + zError (rc), strm.msg); lua_pop (L, 1); /* Text will be freed here */ lua_pushnil (L); deflateEnd (&strm); @@ -2388,6 +2389,15 @@ lua_util_zlib_inflate (lua_State *L, int windowBits) memset (&strm, 0, sizeof (strm)); /* windowBits +16 to decode gzip, zlib 1.2.0.4+ */ + + /* Here are dragons to distinguish between raw deflate and zlib */ + if (windowBits == MAX_WBITS && t->len > 0) { + if ((int)(unsigned char)t->start[0] != 0x78) { + /* Assume raw deflate */ + windowBits = -windowBits; + } + } + rc = inflateInit2 (&strm, windowBits); if (rc != Z_OK) { @@ -2416,7 +2426,8 @@ lua_util_zlib_inflate (lua_State *L, int windowBits) break; } else { - msg_err ("cannot decompress data: %s", zError (rc)); + msg_err ("cannot decompress data: %s (last error: %s)", + zError (rc), strm.msg); lua_pop (L, 1); /* Text will be freed here */ lua_pushnil (L); inflateEnd (&strm); |