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Updater: Move inflate intermediate buffer to heap and enlarge

This commit is contained in:
Shawn Hoffman 2022-09-12 03:35:03 -07:00
parent 14f427d4cd
commit 7432b6ce91
1 changed files with 6 additions and 4 deletions
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10
Source/Core/UpdaterCommon/UpdaterCommon.cpp
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@ -4,6 +4,7 @@
#include "UpdaterCommon/UpdaterCommon.h" #include "UpdaterCommon/UpdaterCommon.h"
#include <array> #include <array>
#include <memory>
#include <optional> #include <optional>
#include <OptionParser.h> #include <OptionParser.h>
@ -132,16 +133,17 @@ std::optional<std::string> GzipInflate(const std::string& data)
inflateInit2(&zstrm, 16 + MAX_WBITS); inflateInit2(&zstrm, 16 + MAX_WBITS);
std::string out; std::string out;
char buffer[4096]; const size_t buf_len = 20 * 1024 * 1024;
auto buffer = std::make_unique<char[]>(buf_len);
int ret; int ret;
do do
{ {
zstrm.avail_out = sizeof(buffer); zstrm.avail_out = buf_len;
zstrm.next_out = reinterpret_cast<u8*>(buffer); zstrm.next_out = reinterpret_cast<u8*>(buffer.get());
ret = inflate(&zstrm, 0); ret = inflate(&zstrm, 0);
out.append(buffer, sizeof(buffer) - zstrm.avail_out); out.append(buffer.get(), buf_len - zstrm.avail_out);
} while (ret == Z_OK); } while (ret == Z_OK);
inflateEnd(&zstrm); inflateEnd(&zstrm);