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System: Hash executable for game code when system.cnf missing

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This commit is contained in:
Connor McLaughlin
2021-03-07 02:44:09 +10:00
parent ac4dd11fa0
commit 6bbb1128b6
4 changed files with 44 additions and 25 deletions
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57
src/core/system.cpp
View File

@ -32,6 +32,7 @@
#include "spu.h"
#include "texture_replacements.h"
#include "timers.h"
#include "xxhash.h"
#include <cctype>
#include <cinttypes>
#include <cmath>
@ -385,39 +386,57 @@ std::string_view GetTitleForPath(const char* path)
return path_view.substr(0, path_view.find_last_of('.'));
}
std::string GetGameCodeForPath(const char* image_path)
std::string GetGameCodeForPath(const char* image_path, bool fallback_to_hash)
{
std::unique_ptr<CDImage> cdi = CDImage::Open(image_path);
if (!cdi)
return {};
return GetGameCodeForImage(cdi.get());
return GetGameCodeForImage(cdi.get(), fallback_to_hash);
}
std::string GetGameCodeForImage(CDImage* cdi)
std::string GetGameCodeForImage(CDImage* cdi, bool fallback_to_hash)
{
std::string code(GetExecutableNameForImage(cdi));
if (code.empty())
return {};
// SCES_123.45 -> SCES-12345
for (std::string::size_type pos = 0; pos < code.size();)
if (!code.empty())
{
if (code[pos] == '.')
// SCES_123.45 -> SCES-12345
for (std::string::size_type pos = 0; pos < code.size();)
{
code.erase(pos, 1);
continue;
if (code[pos] == '.')
{
code.erase(pos, 1);
continue;
}
if (code[pos] == '_')
code[pos] = '-';
else
code[pos] = static_cast<char>(std::toupper(code[pos]));
pos++;
}
if (code[pos] == '_')
code[pos] = '-';
else
code[pos] = static_cast<char>(std::toupper(code[pos]));
pos++;
return code;
}
return code;
if (!fallback_to_hash)
return {};
std::string exe_name;
std::vector<u8> exe_buffer;
if (!ReadExecutableFromImage(cdi, &exe_name, &exe_buffer))
return {};
XXH64_state_t* state = XXH64_createState();
XXH64_reset(state, 0x4242D00C);
XXH64_update(state, exe_name.c_str(), exe_name.size());
XXH64_update(state, exe_buffer.data(), exe_buffer.size());
const u64 hash = XXH64_digest(state);
XXH64_freeState(state);
Log_InfoPrintf("Hash for '%s' - %" PRIX64, exe_name.c_str(), hash);
return StringUtil::StdStringFromFormat("HASH-%" PRIX64, hash);
}
static std::string GetExecutableNameForImage(CDImage* cdi, ISOReader& iso, bool strip_subdirectories)
@ -601,7 +620,7 @@ DiscRegion GetRegionForImage(CDImage* cdi)
if (system_area_region != DiscRegion::Other)
return system_area_region;
std::string code = GetGameCodeForImage(cdi);
std::string code = GetGameCodeForImage(cdi, false);
if (code.empty())
return DiscRegion::Other;

4
src/core/system.h
View File

@ -78,8 +78,8 @@ ConsoleRegion GetConsoleRegionForDiscRegion(DiscRegion region);
std::string GetExecutableNameForImage(CDImage* cdi);
bool ReadExecutableFromImage(CDImage* cdi, std::string* out_executable_name, std::vector<u8>* out_executable_data);
std::string GetGameCodeForImage(CDImage* cdi);
std::string GetGameCodeForPath(const char* image_path);
std::string GetGameCodeForImage(CDImage* cdi, bool fallback_to_hash);
std::string GetGameCodeForPath(const char* image_path, bool fallback_to_hash);
DiscRegion GetRegionForCode(std::string_view code);
DiscRegion GetRegionFromSystemArea(CDImage* cdi);
DiscRegion GetRegionForImage(CDImage* cdi);