当需要Windows安全时，下载文件的臭名昭着但尚未解决的问题

有一个网站： http ： //site.domain.com提示与“Windows安全”对话框的凭据。 所以我设法使用WebBrowser控件导航到页面并发送键盘input密码 – 我无法find另一种方式。

现在我来到网站生成一个链接到我想要下载的文件，它看起来像这样： http : //site.domain.com/operations/reporting/csv/Report720_2553217.csv

我试图使用WebClient下载文件，但它什么也不做（br是我的WebBrowser控件）：

WebClient wb = new WebClient(); wb.Headers.Add( br.Document.Cookie); wb.DownloadFile(link, @"report.csv"); 

我一直在试图find一个工作的解决scheme无济于事。 我知道Web客户端没有通过validation，所以试图使用Web浏览器的cookie，但它不起作用。 该cookie看起来如下所示：

TLTUID = 61FE48D8F9B910F9E930F42D6A03EAA6; TLTSID = 0B2B8EE82688102641B7E768807FA8B2; s_cc = TRUE; s_sq =％5B％5BB％5D％5D; ASPSESSIONIDQQSTRDQS = FNPJCODCEMGFIDHFLKDBEMHO

所以我有两个问题：

1. 如何让networking客户端下载可从networking浏览器会话访问的文件。 上面的代码示例中，我做了什么错误？

2. 有没有简单的方法来使用WebBrowser完全下载并保存该文件到我select的path和文件名？ 或者如何做到这一切使用WebClient或其他东西？

Answer 1

1. 不可能，AFAIK。 WebClient和WebBrowser使用不同的图层来访问网页。 WebClient使用WinHTTP ， WebBrowser使用UrlMon 。 因此，他们将有单独的会话（包括身份validationcaching）。

2. 这是可能的，只需使用任何UrlMon API来下载文件，例如URLDownloadToFile或URLDownloadToCacheFile 。 我刚刚回答了一个类似的问题 。

在旁注中，您不必提供击键来提供身份validation凭证。 您可以在WebBrowser站点对象上为此执行IAuthenticateEx 。 这里是更多的信息 。

Answer 2

所以这是符合我的问题的工作解决scheme。 它会自动导航到指定的网站，validation并下载生成的报告。 我用这个Q / A作为大纲。

 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.Windows.Forms; using System.Threading; using System.ComponentModel; using System.Web; using System.Security.Authentication; using System.Runtime.InteropServices; using System.Runtime.InteropServices.ComTypes; using Microsoft.Win32; using System.Runtime.CompilerServices; using System.Security.Policy; namespace margot_report { [ComImport, Guid("00000112-0000-0000-C000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface IOleObject { void SetClientSite(IOleClientSite pClientSite); } [ComImport, Guid("00000118-0000-0000-C000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface IOleClientSite { void SaveObject(); void GetMoniker(uint dwAssign, uint dwWhichMoniker, object ppmk); void GetContainer(object ppContainer); void ShowObject(); void OnShowWindow(bool fShow); void RequestNewObjectLayout(); } [ComImport, GuidAttribute("6d5140c1-7436-11ce-8034-00aa006009fa"), InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown), ComVisible(false)] public interface IServiceProvider { [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int QueryService(ref Guid guidService, ref Guid riid, out IntPtr ppvObject); } [ComImport] [Guid("79EAC9D0-BAF9-11CE-8C82-00AA004BA90B")] [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] interface IAuthenticate { [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)] void Authenticate(IntPtr phwnd, [MarshalAs(UnmanagedType.LPWStr)] ref string pszUsername, [MarshalAs(UnmanagedType.LPWStr)] ref string pszPassword); } class SelfAuthenticatingWebBrowser : WebBrowser, IOleClientSite, IAuthenticate, IServiceProvider { public static Guid IID_IAuthenticate = new Guid("79eac9d0-baf9-11ce-8c82-00aa004ba90b"); public static Guid SID_IAuthenticate = new Guid("79eac9d0-baf9-11ce-8c82-00aa004ba90b"); public const int INET_E_DEFAULT_ACTION = unchecked((int)0x800C0011); public const int S_OK = unchecked((int)0x00000000); public void Authenticate(IntPtr phwnd, ref string pszUsername, ref string pszPassword) { Console.WriteLine("Authenticate"); pszUsername = Program.username; // pszPassword = Program.password; // //return S_OK; } public int QueryService(ref Guid guidService, ref Guid riid, out IntPtr ppvObject) { //Console.WriteLine("QueryService"); int nRet = guidService.CompareTo(IID_IAuthenticate); // Zero returned if the compared objects are equal if (nRet == 0) { nRet = riid.CompareTo(IID_IAuthenticate); // Zero returned if the compared objects are equal if (nRet == 0) { ppvObject = Marshal.GetComInterfaceForObject(this, typeof(IAuthenticate)); return S_OK; } } ppvObject = new IntPtr(); return INET_E_DEFAULT_ACTION; } public void SaveObject() { throw new NotImplementedException(); } public void GetMoniker(uint dwAssign, uint dwWhichMoniker, object ppmk) { throw new NotImplementedException(); } public void GetContainer(object ppContainer) { throw new NotImplementedException(); } public void ShowObject() { throw new NotImplementedException(); } public void OnShowWindow(bool fShow) { throw new NotImplementedException(); } public void RequestNewObjectLayout() { throw new NotImplementedException(); } public IComponent Component { get { throw new NotImplementedException(); } } public IContainer Container { get { throw new NotImplementedException(); } } public bool DesignMode { get { throw new NotImplementedException(); } } public string Name { get { throw new NotImplementedException(); } set { throw new NotImplementedException(); } } } class Program { static bool send = true, verbose=false, clicked=false, submitted=false; static int c = 0, t=0; public static string filename, report, username, password; /// <summary> /// The URLMON library contains this function, URLDownloadToFile, which is a way /// to download files without user prompts. The ExecWB( _SAVEAS ) function always /// prompts the user, even if _DONTPROMPTUSER parameter is specified, for "internet /// security reasons". This function gets around those reasons. /// </summary> /// <param name="pCaller">Pointer to caller object (AX).</param> /// <param name="szURL">String of the URL.</param> /// <param name="szFileName">String of the destination filename/path.</param> /// <param name="dwReserved">[reserved].</param> /// <param name="lpfnCB">A callback function to monitor progress or abort.</param> /// <returns>0 for okay.</returns> [DllImport("URLMON.DLL", EntryPoint = "URLDownloadToFileW", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)] public static extern int URLDownloadToFile(int pCaller, string srcURL, string dstFile, int Reserved, int CallBack); static void Main(string[] args) { // HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create("http://site.domain.com/operations/reporting/report-run.asp?reportid=720"); ////webRequest.Proxy = webProxy; string appname = Environment.GetCommandLineArgs()[0]; if (args.Count() < 1) { Console.WriteLine("Type: \"{0}\" -h for help on usage.\n", appname); return; } if (args.Count() > 0) foreach (var s in args) if (s.Contains("-h") || s.Contains("/h") || s.Contains("-?") || s.Contains("/?")) { Console.WriteLine("\nUsage: {0} [-rfupv] <values>\n", appname); Console.WriteLine("\n -r report_link "); Console.WriteLine(" -f output_file "); Console.WriteLine(" -u username "); Console.WriteLine(" -p password "); Console.WriteLine(" -t time_delay - seconds to wait before sending key strokes"); Console.WriteLine(" -v verbose output to console (for debugging)"); Console.WriteLine(" -h|? Display this info and exit."); return; } try { if (args.Any(x => x.Contains("-f"))) { int i = 0; while (!args[i].Contains("-f")) i++; filename =args[i + 1]; } else filename = "report.csv"; if (args.Any(x => x.Contains("-r"))) { int i = 0; while (!args[i].Contains("-r")) i++; report = args[i + 1]; } else report = "http://site.domain.com/operations/reporting/report-run.asp?reportid=720"; if (args.Any(x => x.Contains("-u"))) { int i = 0; while (!args[i].Contains("-u")) i++; username = args[i + 1]; } else username = ""; if (args.Any(x => x.Contains("-p"))) { int i = 0; while (!args[i].Contains("-p")) i++; password = args[i + 1]; } else password = ""; if (args.Any(x => x.Contains("-t"))) { int i = 0; while (!args[i].Contains("-t")) i++; t = int.Parse(args[i + 1]); } else t = 5; } catch (Exception ex) { Console.WriteLine(ex.Message); if (ex.InnerException != null) Console.WriteLine(ex.InnerException.Message); return; } /////////////////////////////// ////////////////////////////////////////////////////// Console.WriteLine("start"); var th = new Thread(() => { //WebBrowser var wb = new SelfAuthenticatingWebBrowser(); // WebBrowser(); wb.Show(); Console.WriteLine(wb.DocumentText); Console.WriteLine(wb.DocumentText); wb.DocumentCompleted += browser_DocumentCompleted; wb.NewWindow += browser_newWindow; wb.ControlAdded += browser_ControlAdded ; wb.LostFocus += browser_LostFocus; wb.Navigating += browser_Navigating; wb.FileDownload += browser_FileDownload; //wb.Site = new MySitex(); //Console.WriteLine(wb.Site.GetService(typeof(IAuthenticateEx)));//wb.Site.Name Console.WriteLine(wb.AllowNavigation); wb.Navigate("about:blank"); object obj = wb.ActiveXInstance; IOleObject oc = obj as IOleObject; oc.SetClientSite(wb as IOleClientSite); //this.Site = this as ISite; System.IntPtr ppvServiceProvider; IServiceProvider sp = wb as IServiceProvider; sp.QueryService(ref SelfAuthenticatingWebBrowser.SID_IAuthenticate, ref SelfAuthenticatingWebBrowser.IID_IAuthenticate, out ppvServiceProvider); wb.Navigate(report); Application.Run(); }); th.SetApartmentState(ApartmentState.STA); th.Start(); Console.WriteLine("end"); } static void browser_Navigating(object sender, EventArgs e) { Console.WriteLine("navigating..." ); var s = sender as WebBrowser; Console.WriteLine(s.DocumentTitle + s.Name); //foreach (var x in s.Controls) // Console.WriteLine(x.ToString()); //foreach(Form x in Application.OpenForms) // Console.WriteLine(x.Name); if (false)//(send) { send = false; var thekeys = new Thread(() => { Thread.Sleep(t*1000); if (username != "") { Console.WriteLine("sending username key strokes"); SendKeys.SendWait(username); SendKeys.SendWait("{TAB}"); Console.WriteLine("sent"); } if (password != "") { Console.WriteLine("sending password key strokes"); SendKeys.SendWait(password); SendKeys.SendWait("{ENTER}"); Console.WriteLine("sent"); } }); thekeys.Start(); } } static void browser_FileDownload(object sender, EventArgs e) { if(verbose) Console.WriteLine("FileDownload : " + e.ToString()); var s = sender as WebBrowser; if (verbose) Console.WriteLine(s.DocumentTitle + s.Name + s.Url); //Console.ReadKey(); } static void browser_LostFocus(object sender, EventArgs e) { Console.WriteLine("lost focus : " + e.ToString()); var s = sender as WebBrowser; Console.WriteLine(s.DocumentTitle + s.Name); } static void browser_ControlAdded(object sender, ControlEventArgs e) { Console.WriteLine("control added : " + e.ToString()); var s = sender as WebBrowser; Console.WriteLine(s.DocumentTitle + s.Name); } static void browser_newWindow(object sender, CancelEventArgs e) { Console.WriteLine("new : " + e.ToString()); var s = sender as WebBrowser; Console.WriteLine(s.DocumentTitle + s.Name); } static void browser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { var br = sender as WebBrowser; if (e.Url.ToString()=="about:blank") return; if (br.Url == e.Url) { Console.WriteLine("Navigated to {0}", e.Url); if (e.Url.ToString() == "http://site.domain.com/operations/reporting/report-generate.asp") submitted = true; if(verbose) Console.WriteLine(br.DocumentText); //Console.WriteLine(br.Document.Cookie); if(!clicked) foreach (HtmlElement x in br.Document.All) { // if (x.All == null) //Console.WriteLine("|{0} {1} {2}| [{3}]\n", x.Id, x.Name, ".",x.GetAttribute("value")); if (x.Name == "format" && x.GetAttribute("value") == "C") { Console.WriteLine("\n CLICK !\n"); x.InvokeMember("click"); Thread.Sleep(1000); clicked = true; } //else foreach (HtmlElement y in x.Document.All) // Console.WriteLine("|{0} {1} {2}| [{3}]\n", y.Id, y.Name, y.OuterHtml, x.InnerText); } if (clicked && !submitted) { Console.WriteLine("submitting the report"); if (verbose) Console.WriteLine(" function at: {0}", br.DocumentText.IndexOf("function runReport()")); //var newtext = br.DocumentText.Replace("value=\"R\" checked", "value=\"R\" ").Replace("value=\"C\"", "value=\"C\" checked"); //Console.WriteLine(" function at: {0}", br.DocumentText.IndexOf("function runReport()")); br.Document.InvokeScript("runReport"); Console.WriteLine("done"); //Console.WriteLine(br.DocumentText); } //if (c == 1) { //Console.WriteLine(br.DocumentText); if (verbose) Console.WriteLine(br.DocumentText.IndexOf("http://")); if (verbose) Console.WriteLine(br.DocumentText.IndexOf(".csv")); } if (verbose) Console.WriteLine("c = {0}", c); //http://site.domain.com/operations/reporting/csv/Report714_4045373.csv if (submitted) { int start = br.DocumentText.IndexOf("csv/Report"); int end = 0; if (start >= 0) end = br.DocumentText.IndexOf(".csv", start); if (start > 0 && end > start) { if (verbose) Console.WriteLine(br.DocumentText.Substring(start, end - start)); string link = "http://site.domain.com/operations/reporting/" + br.DocumentText.Substring(start, end - start) + ".csv"; Console.WriteLine(link); //Console.WriteLine(System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location)); //Console.WriteLine(System.IO.Directory.GetCurrentDirectory()); if (URLDownloadToFile(0, link, filename, 0, 0) == 0) Console.WriteLine("The report has been saved as {0}", filename); else Console.WriteLine("There was a problem with downloading/saving the report {0}", report); Application.ExitThread(); } } if (verbose) Console.WriteLine("cookies ? {0}, {1}, {2}", br.Document.Cookie == null, br.Document.Cookie == "", br.Document.Cookie); c++; if(c>4) Application.ExitThread(); // Stops the thread } } } }