private void GenerateHtmlPage(TextWriter sw, string appRoot, string itemName)
{
List <IDisplayInfo> items = new List <IDisplayInfo>();
if (itemName != null)
{
items.Add(_commands[itemName]);
}
else
{
items.AddRange(Commands);
}
using (XmlTextWriter w = new XmlTextWriter(sw))
{
w.Formatting = System.Xml.Formatting.Indented;
w.WriteStartElement("html");
w.WriteStartElement("head");
w.WriteElementString("title", Constants.ProcessName + " Help");
w.WriteEndElement();
w.WriteStartElement("body");
{
HttpIgnoreAttribute ignored;
if (items.Count == 1)
{
Command command = (Command)items[0];
HttpResponseFileAttribute resFileAttr = null;
HttpRequestFileAttribute reqFileAttr = null;
foreach (IArgument arg in command.Arguments)
{
if (reqFileAttr == null)
{
arg.TryGetAttribute(out reqFileAttr);
}
if (resFileAttr == null)
{
arg.TryGetAttribute(out resFileAttr);
}
}
w.WriteElementString("h1", command.DisplayName);
w.WriteElementString("p", command.Description);
w.WriteStartElement("a");
w.WriteAttributeString("href", appRoot);
w.WriteString("<< Back to Top");
w.WriteEndElement();
w.WriteStartElement("form");
{
w.WriteAttributeString("name", command.DisplayName.ToLowerInvariant() + "Form");
if (resFileAttr == null)
{
w.WriteAttributeString("onsubmit", "document.getElementById('" + command.DisplayName.ToLowerInvariant() + "Submit').disabled = true;");
}
w.WriteAttributeString("action", appRoot + command.DisplayName + "/");
if (reqFileAttr != null)
{
w.WriteAttributeString("method", "post");
w.WriteAttributeString("enctype", "multipart/form-data");
}
else
{
w.WriteAttributeString("method", "get");
}
w.WriteStartElement("ul");
w.WriteAttributeString("style", "list-style-type: none;");
w.WriteStartElement("li");
w.WriteElementString("strong", "Arguments:");
w.WriteEndElement();
foreach (Argument arg in command.Arguments)
{
if (arg.Visible == false || arg.Type == typeof(ICommandInterpreter))
{
continue;
}
if (arg.IsAllArguments)
{
continue;
}
HttpHeaderBindingAttribute hdr;
if (arg.TryGetAttribute(out resFileAttr) || arg.TryGetAttribute(out hdr) || arg.TryGetAttribute(out ignored))
{
continue;
}
w.WriteStartElement("li");
w.WriteStartElement("strong");
w.WriteAttributeString("style", "display:inline-block; width: 100px; text-align: right;");
w.WriteString(arg.DisplayName);
w.WriteEndElement();
w.WriteStartElement("input");
w.WriteAttributeString("name", arg.DisplayName);
w.WriteAttributeString("style", "width: 300px;");
if (arg.Required)
{
w.WriteAttributeString("required", "required");
}
if (arg.TryGetAttribute(out reqFileAttr))
{
w.WriteAttributeString("type", "file");
if (reqFileAttr.AllowMultiple)
{
w.WriteAttributeString("multiple", "multiple");
}
if (!String.IsNullOrEmpty(reqFileAttr.MimeType))
{
w.WriteAttributeString("accept", reqFileAttr.MimeType);
}
}
else
{
w.WriteAttributeString("type", "text");
w.WriteAttributeString("value", String.Format("{0}", arg.DefaultValue));
}
w.WriteEndElement();
w.WriteString(arg.Required ? " * " : " - ");
w.WriteString(arg.Description.TrimEnd('.') + ".");
w.WriteEndElement();
}
w.WriteStartElement("li");
w.WriteAttributeString("style", "padding-top:10px;");
{
w.WriteStartElement("strong");
w.WriteAttributeString("style", "display:inline-block; width: 100px; text-align: right;");
w.WriteString(" ");
w.WriteEndElement();
w.WriteStartElement("input");
w.WriteAttributeString("id", command.DisplayName.ToLowerInvariant() + "Submit");
w.WriteAttributeString("name", command.DisplayName.ToLowerInvariant() + "Submit");
w.WriteAttributeString("type", "submit");
w.WriteAttributeString("value", command.DisplayName);
w.WriteEndElement();
}
w.WriteEndElement();
w.WriteEndElement();
}
w.WriteEndElement();
}
else
{
w.WriteElementString("h1", Constants.ProductName + " " + Constants.ProductVersion);
w.WriteElementString("p", System.Diagnostics.FileVersionInfo.GetVersionInfo(Constants.ProcessFile).Comments);
Dictionary <string, List <IDisplayInfo> > all = new Dictionary <string, List <IDisplayInfo> >(StringComparer.OrdinalIgnoreCase);
foreach (IDisplayInfo item in items)
{
if (item.ReflectedType == typeof(CommandInterpreter) || item.ReflectedType == typeof(BuiltInCommands.BuiltIn))
{
continue;
}
if (item.TryGetAttribute(out ignored))
{
continue;
}
List <IDisplayInfo> l;
if (!all.TryGetValue(item.Category, out l))
{
all.Add(item.Category, l = new List <IDisplayInfo>());
}
l.Add(item);
}
List <string> keys = new List <string>(all.Keys);
keys.Sort();
foreach (string key in keys)
{
List <IDisplayInfo> list = all[key];
w.WriteElementString("h2", key + ":");
foreach (IDisplayInfo info in list)
{
ICommand command = info as ICommand;
if (command == null || !info.Visible)
{
continue;
}
w.WriteStartElement("li");
w.WriteStartElement("a");
w.WriteAttributeString("href", appRoot + command.DisplayName + '/');
w.WriteElementString("b", command.DisplayName);
w.WriteEndElement();
w.WriteString(" - ");
w.WriteString(info.Description.TrimEnd('.') + ".");
w.WriteEndElement();
}
}
}
}
foreach (AssemblyCopyrightAttribute copy in Constants.EntryAssembly.GetCustomAttributes(typeof(AssemblyCopyrightAttribute), true))
{
w.WriteElementString("p", copy.Copyright);
}
w.WriteEndElement();
w.WriteEndElement();
w.Flush();
}
}
private void ExecCommand(HttpListenerContext context, ICommand cmd)
{
TextWriter stdOut;
TextWriter stdErr = new StringWriter();
string tempdir = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString("N").Substring(0, 16));
SwitchedOutputStream output = new SwitchedOutputStream(context.Response.OutputStream, ushort.MaxValue);
try
{
string contentType = "text/plain";
IArgument reqFile = null;
IArgument resFile = null;
foreach (IArgument argument in cmd.Arguments)
{
HttpRequestFileAttribute reqFileAttr = null;
HttpResponseFileAttribute resFileAttr = null;
if (argument.TryGetAttribute(out reqFileAttr))
{
Check.Assert <ArgumentException>(null == Interlocked.Exchange(ref reqFile, argument));
}
if (argument.TryGetAttribute(out resFileAttr))
{
Check.Assert <ArgumentException>(null == Interlocked.Exchange(ref resFile, argument));
}
}
if (reqFile != null && reqFile.Required && (
context.Request.HttpMethod.ToUpperInvariant() != "POST" ||
!context.Request.ContentType.StartsWith(
"multipart/form-data",
StringComparison.OrdinalIgnoreCase)))
{
throw new InvalidOperationException();
}
List <string> args = new List <string>();
args.Add(cmd.DisplayName);
HttpResponseTypeAttribute ctypeAttr;
if (cmd.TryGetAttribute(out ctypeAttr) && !String.IsNullOrEmpty(ctypeAttr.MimeType))
{
contentType = ctypeAttr.MimeType;
}
GetArguments(context, cmd, tempdir, ref contentType, args);
if (resFile != null)
{
HttpResponseFileAttribute fattr;
resFile.TryGetAttribute(out fattr);
Directory.CreateDirectory(tempdir);
string tempPath = Path.Combine(tempdir, cmd.DisplayName + fattr.Extension);
args.Add(String.Format("/{0}={1}", resFile.DisplayName, tempPath));
using (stdOut = new StreamWriter(output, Encoding.UTF8))
Run(args.ToArray(), stdOut, stdErr, TextReader.Null);
if (output.OutputSent)
{
throw new ApplicationException("Headers already sent.");
}
context.Response.ContentType = fattr.MimeType ?? "application/binary";
context.Response.Headers.Add("Content-Disposition",
String.Format("attachment; filename=\"{0}{1}\"", cmd.DisplayName,
fattr.Extension));
using (Stream ostream = context.Response.OutputStream)
using (Stream istream = new FileStream(tempPath, FileMode.Open, FileAccess.Read, FileShare.None))
{
int len;
byte[] buffer = new byte[ushort.MaxValue];
while (0 != (len = istream.Read(buffer, 0, buffer.Length)))
{
ostream.Write(buffer, 0, len);
}
}
}
else
{
context.Response.ContentType = contentType +
(contentType.Contains("text") || contentType.Contains("xml") ||
contentType.Contains("json")
? "; charset=utf-8"
: "");
using (stdOut = new StreamWriter(output, Encoding.UTF8))
Run(args.ToArray(), stdOut, stdErr, TextReader.Null);
}
if (!output.OutputSent)
{
context.Response.ContentLength64 = output.BufferPosition;
}
output.Commit();
}
catch (InterpreterException) { throw; }
catch (Exception e)
{
if (output.OutputSent)
{
using (stdOut = new StreamWriter(output, Encoding.UTF8))
{
stdOut.Write("EXCEPTION: ");
stdOut.WriteLine(e.Message);
stdOut.WriteLine(stdErr.ToString());
}
output.Commit();
}
else
{
WriteErrorPage(context, 500, "Internal Server Error", e.Message, stdErr.ToString(), output.ToString());
}
}
finally
{
if (Directory.Exists(tempdir))
{
try
{
Directory.Delete(tempdir, true);
}
catch
{
}
}
}
}
