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avoid exposing game to partially written mod files during first download #250

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avoid exposing game to partially written mod files during first download #250

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14 changes: 12 additions & 2 deletions src/Network/Resources.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -579,7 +579,12 @@ void NewSyncResources(SOCKET Sock, const std::string& Mods, const std::vector<Mo
}
#endif

fs::copy_file(PathToSaveTo, std::filesystem::path(GetGamePath()) / "mods/multiplayer" / FName, fs::copy_options::overwrite_existing);
auto name = std::filesystem::path(GetGamePath()) / "mods/multiplayer" / FName;
auto tmp_name = name;
tmp_name += ".tmp";

fs::copy_file(PathToSaveTo, tmp_name, fs::copy_options::overwrite_existing);
fs::rename(tmp_name, name);
UpdateModUsage(FName);
}
WaitForConfirm();
Expand Down Expand Up @@ -738,7 +743,12 @@ void SyncResources(SOCKET Sock) {
}
#endif

fs::copy_file(PathToSaveTo, GetGamePath() / beammp_wide("mods/multiplayer") / Utils::ToWString(FName), fs::copy_options::overwrite_existing);
auto name = GetGamePath() / beammp_wide("mods/multiplayer") / Utils::ToWString(FName);
auto tmp_name = name;
tmp_name += L".tmp";

fs::copy_file(PathToSaveTo, tmp_name, fs::copy_options::overwrite_existing);
fs::rename(tmp_name, name);
UpdateModUsage(FN->substr(pos));
}
WaitForConfirm();
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