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patch_manager: Add error checking to load dir to prevent crashes 

Prevents a crash if the load dir would be nullptr, instead logs an error and returns appropriately.
This commit is contained in:
Zach Hilman 2019-04-10 12:28:32 -04:00
parent 9d9fc8a675
commit 06db4d94fd
1 changed files with 15 additions and 0 deletions
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15
src/core/file_sys/patch_manager.cpp
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@ -187,6 +187,11 @@ std::vector<u8> PatchManager::PatchNSO(const std::vector<u8>& nso, const std::st
LOG_INFO(Loader, "Patching NSO for name={}, build_id={}", name, build_id); LOG_INFO(Loader, "Patching NSO for name={}, build_id={}", name, build_id);
const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id); const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
if (load_dir == nullptr) {
LOG_ERROR(Loader, "Cannot load mods for invalid title_id={:016X}", title_id);
return nso;
}
auto patch_dirs = load_dir->GetSubdirectories(); auto patch_dirs = load_dir->GetSubdirectories();
std::sort(patch_dirs.begin(), patch_dirs.end(), std::sort(patch_dirs.begin(), patch_dirs.end(),
[](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); }); [](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
@ -225,6 +230,11 @@ bool PatchManager::HasNSOPatch(const std::array<u8, 32>& build_id_) const {
LOG_INFO(Loader, "Querying NSO patch existence for build_id={}", build_id); LOG_INFO(Loader, "Querying NSO patch existence for build_id={}", build_id);
const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id); const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
if (load_dir == nullptr) {
LOG_ERROR(Loader, "Cannot load mods for invalid title_id={:016X}", title_id);
return false;
}
auto patch_dirs = load_dir->GetSubdirectories(); auto patch_dirs = load_dir->GetSubdirectories();
std::sort(patch_dirs.begin(), patch_dirs.end(), std::sort(patch_dirs.begin(), patch_dirs.end(),
[](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); }); [](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
@ -259,6 +269,11 @@ static std::optional<CheatList> ReadCheatFileFromFolder(const Core::System& syst
std::vector<CheatList> PatchManager::CreateCheatList(const Core::System& system, std::vector<CheatList> PatchManager::CreateCheatList(const Core::System& system,
const std::array<u8, 32>& build_id_) const { const std::array<u8, 32>& build_id_) const {
const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id); const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
if (load_dir == nullptr) {
LOG_ERROR(Loader, "Cannot load mods for invalid title_id={:016X}", title_id);
return {};
}
auto patch_dirs = load_dir->GetSubdirectories(); auto patch_dirs = load_dir->GetSubdirectories();
std::sort(patch_dirs.begin(), patch_dirs.end(), std::sort(patch_dirs.begin(), patch_dirs.end(),
[](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); }); [](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });