Function RibbitDownloadFile

src/External/CascLib/src/CascFiles.cpp:1134–1197

}

static DWORD RibbitDownloadFile(LPCTSTR szCdnHostUrl, LPCTSTR szProduct, LPCTSTR szFileName, CASC_PATH<TCHAR> & LocalPath, CASC_BLOB & FileData)
{
    CASC_PATH<TCHAR> LocalFile;
    TFileStream * pStream;
    ULONGLONG FileSize = 0;
    TCHAR szRemoteUrl[256];
    DWORD dwErrCode = ERROR_CAN_NOT_COMPLETE;

    // If required, try to load the local name first
    if(LocalPath.Length() && LocalPath.LocalCaching())
    {
        // Load the local file into memory
        if((dwErrCode = LoadFileToMemory(LocalPath, FileData)) == ERROR_SUCCESS)
        {
            // Pass the file data to the caller
            return ERROR_SUCCESS;
        }
    }

    // Supply the default CDN URL, if not present
    if(szCdnHostUrl == NULL || szCdnHostUrl[0] == 0)
        szCdnHostUrl = szDefaultCDN;

    // Construct the full URL (https://wowdev.wiki/Ribbit)
    // Old (HTTP) download: wget http://us.patch.battle.net:1119/wow_classic/cdns
    CascStrPrintf(szRemoteUrl, _countof(szRemoteUrl), _T("%s/%s/%s"), szCdnHostUrl, szProduct, szFileName);

    // Open the file stream
    if((pStream = FileStream_OpenFile(szRemoteUrl, 0)) != NULL)
    {
        if(FileStream_GetSize(pStream, &FileSize) && FileSize <= 0x04000000)
        {
            // Fill-in the file pointer and size
            if((dwErrCode = FileData.SetSize((size_t)FileSize)) == ERROR_SUCCESS)
            {
                if(FileStream_Read(pStream, NULL, FileData.pbData, (DWORD)FileSize))
                {
                    dwErrCode = ERROR_SUCCESS;
                }
                else
                {
                    dwErrCode = GetCascError();
                    FileData.Free();
                }
            }
        }
        else
        {
            dwErrCode = GetCascError();
        }

        // Close the remote stream
        FileStream_Close(pStream);
    }
    else
    {
        dwErrCode = GetCascError();
    }