Implements the windows portion of the firstrun option

[GloriousEggroll]

TODO: Still need the wininet portion for proton, but I don't think it should be included here, as it's something valve needs to/may patch in. I'll write a bash script for the wininet patch. I feel that's a better solution to be run seperately until it's resolved in proton

[ananace]

Do you think you could split out only the firstrun changes? Preferrably without changing indentation on every single line as well.

[GloriousEggroll]

I'm cleaning this up on a new branch, trying to implement your writeFile method with:

        FILE* fp;
        fopen_s(&fp, "directx_Jun2010_redist.exe", "wb");
        if (!fp)
        {
            std::wcout << "Failed to create file on disk." << std::endl;
        }
        CURL *curl = curl_easy_init();
        FileWrapper *wrap = new FileWrapper { fp };
        curl_easy_setopt(curl, CURLOPT_URL, ("https://download.microsoft.com/download/8/4/A/84A35BF1-DAFE-4AE8-82AF-AD2AE20B6B14/directx_Jun2010_redist.exe"));
        curl_easy_setopt(curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Warframe_on_Proton)");
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, wrap);
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writeFile);

        CURLcode res;
        res = curl_easy_perform(curl);
        delete wrap;

but it's giving me this error:

object has an uninitialized const or reference member

for FileWrapper *wrap = new FileWrapper { fp };

because it's expecting a hash with it:

struct FileWrapper
{
    FILE* stream;
    const Hashlist::RemoteHash& file;
};

[ananace]

If you look at https://github.com/ananace/wf_proton_launcher/blob/master/WF_Proton_Launcher/Main.cpp#L594 you'll see an example of how it's done for the LZMA-compressed files.
Both the CompressedFileWrapper and the FileWrapper structs expect to begiven a FILE* as the first value, that's the reason for the initializer list.

The hash itself can just be in-place allocated.

Though I later realized that since that whole code happens in the same scope, it could be simplified by just using a regular stack object instead of allocating it on the heap.

{
    // ...

    FILE* fp;
    CURL *curl = curl_easy_init();

    // ...

    FileWrapper wrap{ fp, {} };
    curl_easy_setopt(curl, CURLOPT_WRITEDATA, &wrap);
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writeFile);

    CURLcode res;
    res = curl_easy_perform(curl);

    // ...

}