Ejemplo n.º 1
0
        /// <summary>
        /// Set options for this object. See the <c>EasyGet</c> sample for
        /// basic usage.
        /// </summary>
        /// <param name="option">This should be a valid <see cref="CURLoption"/>.</param>
        /// <param name="parameter">This should be a parameter of a varying
        /// type based on the value of the <c>option</c> parameter.</param>
        /// <exception cref="System.NullReferenceException">This is thrown if
        /// the native <c>CURL*</c> handle wasn't created successfully.</exception>
        /// <returns>A <see cref="CURLcode"/>, typically obtained from
        /// <c>cURL</c> internally, but sometimes a
        /// <see cref="CURLcode.CURLE_BAD_FUNCTION_ARGUMENT"/>
        /// will be returned if the type of value of <c>parameter</c> is invalid.
        /// </returns>
        public CURLcode SetOpt(CURLoption option, Object parameter)
        {
            EnsureHandle();
            CURLcode retCode = CURLcode.CURLE_OK;

            // numeric cases
            if ((int)option < CURLOPTTYPE_OBJECTPOINT)
            {
                int i = 0;
                if (option == CURLoption.CURLOPT_DNS_USE_GLOBAL_CACHE ||
                    option == CURLoption.CURLOPT_SOURCE_PORT)
                {
                    return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);
                }
                else if (option == CURLoption.CURLOPT_TIMEVALUE)
                {
                    // unboxing may throw class cast exception
                    DateTime d         = (DateTime)parameter;
                    DateTime startTime = new DateTime(1970, 1, 1);
                    TimeSpan currTime  = new TimeSpan(DateTime.Now.Ticks -
                                                      startTime.Ticks);
                    i = Convert.ToInt32(currTime.TotalSeconds);
                }
                else
                {
                    i = Convert.ToInt32(parameter);
                }
                retCode = External.curl_easy_setopt(m_pCURL,
                                                    option, (IntPtr)i);
            }

            // object cases: the majority
            else if ((int)option < CURLOPTTYPE_FUNCTIONPOINT)
            {
                switch (option)
                {
                // various data items
                case CURLoption.CURLOPT_PRIVATE:
                    m_privateData = parameter; break;

                case CURLoption.CURLOPT_WRITEDATA:
                    m_writeData = parameter; break;

                case CURLoption.CURLOPT_READDATA:
                    m_readData = parameter; break;

                case CURLoption.CURLOPT_PROGRESSDATA:
                    m_progressData = parameter; break;

                case CURLoption.CURLOPT_DEBUGDATA:
                    m_debugData = parameter; break;

                case CURLoption.CURLOPT_HEADERDATA:
                    m_headerData = parameter; break;

                case CURLoption.CURLOPT_SSL_CTX_DATA:
                    m_sslContextData = parameter; break;

                case CURLoption.CURLOPT_IOCTLDATA:
                    m_ioctlData = parameter; break;

                // items that can't be set externally or
                // obsolete items
                case CURLoption.CURLOPT_ERRORBUFFER:
                case CURLoption.CURLOPT_STDERR:
                case CURLoption.CURLOPT_SOURCE_HOST:
                case CURLoption.CURLOPT_SOURCE_PATH:
                case CURLoption.CURLOPT_PASV_HOST:
                    return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);

                // singular case for share
                case CURLoption.CURLOPT_SHARE: {
                    Share share = parameter as Share;
                    if (share == null)
                    {
                        return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);
                    }
                    retCode = External.curl_easy_setopt(m_pCURL,
                                                        option, share.GetHandle());
                    break;
                }

                // multipart HTTP post
                case CURLoption.CURLOPT_HTTPPOST: {
                    MultiPartForm mf = parameter as MultiPartForm;
                    if (mf == null)
                    {
                        return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);
                    }
                    retCode = External.curl_easy_setopt(m_pCURL,
                                                        option, mf.GetHandle());
                    break;
                }

                // items curl wants as a curl_slist
                case CURLoption.CURLOPT_HTTPHEADER:
                case CURLoption.CURLOPT_PREQUOTE:
                case CURLoption.CURLOPT_QUOTE:
                case CURLoption.CURLOPT_POSTQUOTE:
                case CURLoption.CURLOPT_SOURCE_QUOTE:
                case CURLoption.CURLOPT_TELNETOPTIONS:
                case CURLoption.CURLOPT_HTTP200ALIASES: {
                    Slist slist = parameter as Slist;
                    if (slist == null)
                    {
                        retCode = External.curl_easy_setopt(m_pCURL,
                                                            option, IntPtr.Zero);
                    }
                    else
                    {
                        retCode = External.curl_easy_setopt(m_pCURL,
                                                            option, slist.GetHandle());
                    }
                    break;
                }

                // string items
                default: {
                    string s = parameter as string;
                    if (s == null)
                    {
                        retCode = External.curl_easy_setopt(m_pCURL,
                                                            option, IntPtr.Zero);
                    }
                    else
                    {
                        IntPtr pCurlStr = External.curl_shim_add_string(
                            m_pMyStrings, s);
                        if (pCurlStr != IntPtr.Zero)
                        {
                            retCode = External.curl_easy_setopt(m_pCURL,
                                                                option, pCurlStr);
                        }
                    }
                    break;
                }
                }
            }

            // FUNCTIONPOINT args, for delegates
            else if ((int)option < CURLOPTTYPE_OFF_T)
            {
                switch (option)
                {
                case CURLoption.CURLOPT_WRITEFUNCTION: {
                    WriteFunction wf = parameter as WriteFunction;
                    if (wf == null)
                    {
                        return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);
                    }
                    m_pfWrite = wf;
                    break;
                }

                case CURLoption.CURLOPT_READFUNCTION: {
                    ReadFunction rf = parameter as ReadFunction;
                    if (rf == null)
                    {
                        return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);
                    }
                    m_pfRead = rf;
                    break;
                }

                case CURLoption.CURLOPT_PROGRESSFUNCTION: {
                    ProgressFunction pf = parameter as ProgressFunction;
                    if (pf == null)
                    {
                        return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);
                    }
                    m_pfProgress = pf;
                    break;
                }

                case CURLoption.CURLOPT_DEBUGFUNCTION: {
                    DebugFunction pd = parameter as DebugFunction;
                    if (pd == null)
                    {
                        return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);
                    }
                    m_pfDebug = pd;
                    break;
                }

                case CURLoption.CURLOPT_HEADERFUNCTION: {
                    HeaderFunction hf = parameter as HeaderFunction;
                    if (hf == null)
                    {
                        return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);
                    }
                    m_pfHeader = hf;
                    break;
                }

                case CURLoption.CURLOPT_SSL_CTX_FUNCTION: {
                    SSLContextFunction sf = parameter as SSLContextFunction;
                    if (sf == null)
                    {
                        return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);
                    }
                    m_pfSSLContext = sf;
                    break;
                }

                case CURLoption.CURLOPT_IOCTLFUNCTION: {
                    IoctlFunction iof = parameter as IoctlFunction;
                    if (iof == null)
                    {
                        return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);
                    }
                    m_pfIoctl = iof;
                    break;
                }

                default:
                    return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);
                }
            }

            // otherwise, it's one of those 64-bit off_t guys!
            else
            {
                Int64 i = Convert.ToInt64(parameter);
                retCode = External.curl_easy_setopt_64(m_pCURL,
                                                       option, i);
            }

            return(retCode);
        }