I have to run two commands using Process in asp.net as given below and the first command runs successfully while running the second command gets hung at result = p.StandardOutput.ReadToEnd()
How to implement this to run both commands successfully?
private static string FFMPEG_EXE_PATH = #"D:\ffmpeg\bin\ffmpeg.exe";
private static string FFPROBE_EXE_PATH = #"D:\ffmpeg\bin\ffprobe.exe";
protected void Page_Load(object sender, EventArgs e)
{
string firstArgs = #"-hide_banner -show_format -show_streams -pretty D:\Video\dolbycanyon.m4v";
var result1 = Execute(FFPROBE_EXE_PATH, firstArgs);
string secondArgs = #"-hide_banner -ss 00:00:05 -i D:\Video\dolbycanyon.m4v -r 1 -t 1 -f image2 D:\Video\test.jpg";
var result2 = Execute(FFMPEG_EXE_PATH, secondArgs);
}
private string Execute(string exePath, string parameters)
{
string result = String.Empty;
using (Process p = new Process())
{
p.StartInfo.UseShellExecute = false;
p.StartInfo.CreateNoWindow = true;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.FileName = exePath;
p.StartInfo.Arguments = parameters;
p.Start();
result = p.StandardOutput.ReadToEnd(); // the application hung here for the second command
p.WaitForExit();
}
return result;
}
I have changed the Execute method to as below and it worked for both commands.
public string Execute(string path, string args, int timeoutMs)
{
using (var outputWaitHandle = new ManualResetEvent(false))
{
using (var process = new Process())
{
process.StartInfo = new ProcessStartInfo(path);
process.StartInfo.Arguments = args;
process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.CreateNoWindow = true;
var sb = new StringBuilder(1024);
process.OutputDataReceived += (sender, e) =>
{
sb.AppendLine(e.Data);
if (e.Data == null)
{
outputWaitHandle.Set();
}
};
process.Start();
process.BeginOutputReadLine();
process.WaitForExit(timeoutMs);
outputWaitHandle.WaitOne(timeoutMs);
process.CancelOutputRead();
return sb.ToString();
}
}
}
I've published my app and it is now running from IIS. the problem is that the email function in my controller no longer works when running on IIS (the email function does not send email)
I have an email function on my mvc application and when I run it, it does send an email. The problem starts after I've published my app, Its running on IIS now but the email function does not send the email anymore. How do I go about fixing this?
[HttpPost]
public JsonResult SendMailToUser(string lt, string reason, string name, string fr, string ed)
{
bool result = false;
result = SendMail("ntulisakhile8#gmail.com", "Leave Reaquest", "Hi Sensei,<br />I would like to take a " + lt + " leave<br/><strong>From:</strong> " + fr + " <strong>To:</strong> " + ed + " <br/>Reason: " + reason + "<br/>Regards<br/>" + name + "<br/><a href=~/Response.html>Respond</a>");
return Json(result, JsonRequestBehavior.AllowGet);
}
public bool SendMail(string toEmail, string subject, string emailBody)
{
try
{
string senderEmail = System.Configuration.ConfigurationManager.AppSettings["SenderEmail"].ToString();
string senderPassword = System.Configuration.ConfigurationManager.AppSettings["SenderPassword"].ToString();
SmtpClient client = new SmtpClient("smtp.gmail.com", 587);
client.EnableSsl = true;
client.Timeout = 100000;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Credentials = new NetworkCredential(senderEmail, senderPassword);
MailMessage mailMessage = new MailMessage(senderEmail, toEmail, subject, emailBody);
mailMessage.IsBodyHtml = true;
mailMessage.BodyEncoding = UTF8Encoding.UTF8;
client.Send(mailMessage);
return true;
}
catch (Exception ex)
{
return false;
}
}
I want to read a file from a FTP server without downloading it to a local file. I wrote a function but it does not work:
private string GetServerVersion()
{
WebClient request = new WebClient();
string url = FtpPath + FileName;
string version = "";
request.Credentials = new NetworkCredential(ftp_user, ftp_pas);
try
{
byte[] newFileData = request.DownloadData(new Uri(FtpPath)+FileName);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
}
catch (WebException e)
{
}
return version;
}
Here's a simple working example using your code to grab a file from the Microsoft public FTP servers:
WebClient request = new WebClient();
string url = "ftp://ftp.microsoft.com/developr/fortran/" +"README.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
try
{
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
Console.WriteLine(fileString);
}
catch (WebException e)
{
// Do something such as log error, but this is based on OP's original code
// so for now we do nothing.
}
I reckon you're missing a slash on this line here in your code:
string url = FtpPath + FileName;
Perhaps between FtpPath and FileName ?
Small binary file
If the file is small, the easiest way is using WebClient.DownloadData:
WebClient client = new WebClient();
string url = "ftp://ftp.example.com/remote/path/file.zip";
client.Credentials = new NetworkCredential("username", "password");
byte[] contents = client.DownloadData(url);
Small text file
If the small file is a text file, use WebClient.DownloadString:
string contents = client.DownloadString(url);
It assumes that the file contents is in UTF-8 encoding (a plain ASCII file will do too). If you need to use a different encoding, use WebClient.Encoding property.
Large binary file
If the file is large, so that you need to process it in chunks, instead of loading it to memory whole, use FtpWebRequest:
FtpWebRequest request =
(FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.zip");
request.Credentials = new NetworkCredential("username", "password");
request.Method = WebRequestMethods.Ftp.DownloadFile;
using (Stream stream = request.GetResponse().GetResponseStream())
{
byte[] buffer = new byte[10240];
int read;
while ((read = stream.Read(buffer, 0, buffer.Length)) > 0)
{
// process the chunk in "buffer"
}
}
You can also simplify the code by using WebClient.OpenRead.
Large text file
If the large file is a text file and you want to process it by lines, instead of by chunks of a fixed size, use StreamReader:
FtpWebRequest request =
(FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.txt");
request.Credentials = new NetworkCredential("username", "password");
request.Method = WebRequestMethods.Ftp.DownloadFile;
using (Stream stream = request.GetResponse().GetResponseStream())
using (StreamReader reader = new StreamReader(stream))
{
while (!reader.EndOfStream)
{
string line = reader.ReadLine();
// process the line
Console.WriteLine(line);
}
}
Again, this assumes UTF-8 encoding. If you want to use another encoding, use an overload of StreamReader constructor that takes also Encoding.
As previously, you can simplify the code by using WebClient.OpenRead.
Stream interface
Though, in many cases, you will want to use the downloaded data in some API that uses the Stream interface. In that case, instead of using any of the solutions above, directly use the stream returned by request.GetResponse().GetResponseStream() or WebClient.OpenRead in the API.
For an example, see Transferring files from FTP directly to Azure Blob storage in C#.
The code you have above is very simillar to another Stackoverlow example I found and used myself 2 days ago. Provided you set the URI, User and Password correctly, it will download the file and set the contents to FileString. I'm not sure what you mean by wanting to read the file without downloading it. This is not really an option.
If you want to look at file attributes (I see you mention "version"), you could use the code below to get all the file Name, Data, and Size from the FTP server without downloading the file.
Call GetFileInfo and pass in the file name (make sure you follow through the code to set the full FTP path, User and Password). This will give you back a FTPFileInfo object with a Name, Date and Size.
public static FTPFileInfo GetFileInfo(string fileName)
{
var dirInfo = WordstockExport.GetFTPDirectoryDetails();
var list = FTPFileInfo.Load(dirInfo);
try
{
FTPFileInfo ftpFile = list.SingleOrDefault(f => f.FileName == fileName);
return ftpFile;
}
catch { }
return null;
}
class FTPFileInfo
{
private DateTime _FileDate;
private long _FileSize;
private string _FileName;
public DateTime FileDate
{
get { return _FileDate; }
set { _FileDate = value; }
}
public long FileSize
{
get { return _FileSize; }
set { _FileSize = value; }
}
public string FileName
{
get { return _FileName; }
set { _FileName = value; }
}
public FTPFileInfo() { }
public static FTPFileInfo LoadFromLine(string line)
{
FTPFileInfo file = new FTPFileInfo();
string[] ftpFileInfo = line.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
file._FileDate = DateTime.Parse(ftpFileInfo[0] + " " + ftpFileInfo[1]);
file._FileSize = long.Parse(ftpFileInfo[2]);
file._FileName = ftpFileInfo[3];
return file;
}
public static List<FTPFileInfo> Load(string listDirectoryDetails)
{
List<FTPFileInfo> files = new List<FTPFileInfo>();
string[] lines = listDirectoryDetails.Split("\r\n".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
foreach(var line in lines)
files.Add(LoadFromLine(line));
return files;
}
}
private static string GetFTPDirectoryDetails()
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(App.Export_FTPPath);
request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
request.Credentials = new NetworkCredential(App.FTP_User, App.FTP_Password);
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
string fileLines = reader.ReadToEnd();
reader.Close();
response.Close();
return fileLines;
}
It is impossible to know what the issue is without details about the error/exception.
At a guess, you do not seem to be assigning a new value to version after the initial declaration
string version = "";
Try changing your code to
version = System.Text.Encoding.UTF8.GetString(newFileData);
C Sharp GUI app. Minimal ftp transfer, not elegant but it works fine.
GUI, not console.
Weather from noaa. Find your region (look for your metar)!
A METAR weather report is predominantly used by pilots in fulfillment of a part of a pre- flight
Build with vs 2012 premium RC (july 2012)
(click on label, not button)
using System;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.IO;
using System.Collections.Generic;
namespace getweather
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button2_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void CYYY_Click(object sender, EventArgs e)
{
WebClient request = new WebClient();
string url = "ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/CYYY.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
richTextBox1.Text = fileString;
}
private void CYSC_Click(object sender, EventArgs e)
{
WebClient request = new WebClient();
string url = "ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/CYSC.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
richTextBox1.Text = fileString;
}
private void CYQB_Click(object sender, EventArgs e)
{
WebClient request = new WebClient();
string url = "ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/CYQB.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
richTextBox1.Text = fileString;
}
private void CYUY_Click(object sender, EventArgs e)
{
WebClient request = new WebClient();
string url = "ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/CYUY.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
richTextBox1.Text = fileString;
}
private void CYHU_Click(object sender, EventArgs e)
{
WebClient request = new WebClient();
string url = "ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/CYHU.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
richTextBox1.Text = fileString;
}
}
}
WebClient request = new WebClient();
string url = "ftp://ftp.microsoft.com/developr/fortran/" +"README.TXT";
request.Credentials = new NetworkCredential("anonymous", "anonymous#example.com");
request.Proxy = null;
try
{
byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
Console.WriteLine(fileString);
}
catch (WebException e)
{
// Do something such as log error, but this is based on OP's original code
// so for now we do nothing.
}
I know this is an old question, but I thought I'd suggest using path.combine for the next guy reading this. Helps clean up these kinds of issues.
string url = Path.Combine("ftp://ftp.microsoft.com/developr/fortran", "README.TXT");
We can use below method to get the file attribute from ftp without downloading the file.This is working fine for me.
public DataTable getFileListFTP(string serverIP,string userID,string Password)
{
DataTable dt = new DataTable();
string[] fileListArr;
string fileName = string.Empty;
long fileSize = 0;
// DateTime creationDate;
string creationDate;
FtpWebRequest Request = (FtpWebRequest)WebRequest.Create(serverIP);
Request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
Request.Credentials = new NetworkCredential(userID,Password);
FtpWebResponse Response = (FtpWebResponse)Request.GetResponse();
Stream ResponseStream = Response.GetResponseStream();
StreamReader Reader = new StreamReader(ResponseStream);
dt.Columns.Add("FileName", typeof(String));
dt.Columns.Add("FileSize", typeof(String));
dt.Columns.Add("CreationDate", typeof(DateTime));
//CultureInfo c = new CultureInfo("ES-ES");
while (!Reader.EndOfStream)//Read file name
{
fileListArr = Convert.ToString(Reader.ReadLine()).Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
fileSize = long.Parse(fileListArr[4]);
creationDate = fileListArr[6] + " " + fileListArr[5] + " " + fileListArr[7];
//creationDate =Convert.ToDateTime(fileListArr[6] + " " + fileListArr[5] + " " + fileListArr[7], c).ToString("dd/MMM/yyyy", DateTimeFormatInfo.InvariantInfo);
fileName = Convert.ToString(fileListArr[8]);
DataRow drow = dt.NewRow();
drow["FileName"] = fileName;
drow["FileSize"] = fileName;
drow["CreationDate"] = creationDate;
dt.Rows.Add(drow);
}
Response.Close();
ResponseStream.Close();
Reader.Close();
return dt;
}
Take a look at my FTP class, it might be exactly what you need.
Public Class FTP
'-------------------------[BroCode]--------------------------
'----------------------------FTP-----------------------------
Private _credentials As System.Net.NetworkCredential
Sub New(ByVal _FTPUser As String, ByVal _FTPPass As String)
setCredentials(_FTPUser, _FTPPass)
End Sub
Public Sub UploadFile(ByVal _FileName As String, ByVal _UploadPath As String)
Dim _FileInfo As New System.IO.FileInfo(_FileName)
Dim _FtpWebRequest As System.Net.FtpWebRequest = CType(System.Net.FtpWebRequest.Create(New Uri(_UploadPath)), System.Net.FtpWebRequest)
_FtpWebRequest.Credentials = _credentials
_FtpWebRequest.KeepAlive = False
_FtpWebRequest.Timeout = 20000
_FtpWebRequest.Method = System.Net.WebRequestMethods.Ftp.UploadFile
_FtpWebRequest.UseBinary = True
_FtpWebRequest.ContentLength = _FileInfo.Length
Dim buffLength As Integer = 2048
Dim buff(buffLength - 1) As Byte
Dim _FileStream As System.IO.FileStream = _FileInfo.OpenRead()
Try
Dim _Stream As System.IO.Stream = _FtpWebRequest.GetRequestStream()
Dim contentLen As Integer = _FileStream.Read(buff, 0, buffLength)
Do While contentLen <> 0
_Stream.Write(buff, 0, contentLen)
contentLen = _FileStream.Read(buff, 0, buffLength)
Loop
_Stream.Close()
_Stream.Dispose()
_FileStream.Close()
_FileStream.Dispose()
Catch ex As Exception
MessageBox.Show(ex.Message, "Upload Error: ", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
End Sub
Public Sub DownloadFile(ByVal _FileName As String, ByVal _ftpDownloadPath As String)
Try
Dim _request As System.Net.FtpWebRequest = System.Net.WebRequest.Create(_ftpDownloadPath)
_request.KeepAlive = False
_request.Method = System.Net.WebRequestMethods.Ftp.DownloadFile
_request.Credentials = _credentials
Dim _response As System.Net.FtpWebResponse = _request.GetResponse()
Dim responseStream As System.IO.Stream = _response.GetResponseStream()
Dim fs As New System.IO.FileStream(_FileName, System.IO.FileMode.Create)
responseStream.CopyTo(fs)
responseStream.Close()
_response.Close()
Catch ex As Exception
MessageBox.Show(ex.Message, "Download Error: ", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
End Sub
Public Function GetDirectory(ByVal _ftpPath As String) As List(Of String)
Dim ret As New List(Of String)
Try
Dim _request As System.Net.FtpWebRequest = System.Net.WebRequest.Create(_ftpPath)
_request.KeepAlive = False
_request.Method = System.Net.WebRequestMethods.Ftp.ListDirectoryDetails
_request.Credentials = _credentials
Dim _response As System.Net.FtpWebResponse = _request.GetResponse()
Dim responseStream As System.IO.Stream = _response.GetResponseStream()
Dim _reader As System.IO.StreamReader = New System.IO.StreamReader(responseStream)
Dim FileData As String = _reader.ReadToEnd
Dim Lines() As String = FileData.Split(New String() {Environment.NewLine}, StringSplitOptions.RemoveEmptyEntries)
For Each l As String In Lines
ret.Add(l)
Next
_reader.Close()
_response.Close()
Catch ex As Exception
MessageBox.Show(ex.Message, "Directory Fetch Error: ", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
Return ret
End Function
Private Sub setCredentials(ByVal _FTPUser As String, ByVal _FTPPass As String)
_credentials = New System.Net.NetworkCredential(_FTPUser, _FTPPass)
End Sub
End Class
To initialize:
Dim ftp As New FORM.FTP("username", "password")
ftp.UploadFile("c:\file.jpeg", "ftp://domain/file.jpeg")
ftp.DownloadFile("c:\file.jpeg", "ftp://ftp://domain/file.jpeg")
Dim directory As List(Of String) = ftp.GetDirectory("ftp://ftp.domain.net/")
ListBox1.Items.Clear()
For Each item As String In directory
ListBox1.Items.Add(item)
Next
https://stackoverflow.com/a/28669746/2701974
I have problem during running external process from ASP.NET application.
The process is run as follows:
[WebMethod(EnableSession = true)]
[ScriptMethod(UseHttpGet = false, ResponseFormat = ResponseFormat.Json)]
public static WebResult generateSomething(string language)
{
ProcessStartInfo psi = new ProcessStartInfo();
psi.UseShellExecute = false;
psi.RedirectStandardError = true;
psi.RedirectStandardOutput = true;
psi.RedirectStandardInput = true;
psi.WindowStyle = ProcessWindowStyle.Hidden;
psi.CreateNoWindow = true;
psi.ErrorDialog = false;
psi.WorkingDirectory = Environment.CurrentDirectory;
psi.FileName = String.Format("\"{0}\"", Path.Combine(appDir, Properties.Settings.Default.PATH_TO_APP_TEXT));
psi.Arguments = arguments.ToString();
modeller.log.Info("Arguments: " + psi.Arguments);
var outputText = new StringBuilder();
int exitCode;
var result = new WebResult();
using (Process process = new Process())
{
process.StartInfo = psi;
process.OutputDataReceived += (sendingProcess, args) => { outputText.Append(args.Data); };
process.ErrorDataReceived += (sendingProcess, args) => { outputText.Append(args.Data); };
process.Start();
process.BeginOutputReadLine();
process.BeginErrorReadLine();
process.WaitForExit();
exitCode = process.ExitCode;
}
string outText = outputText.ToString();
Immediately after process finishes (succesfully or not) and the method leaves ASP.NET IIS session is ended, so any authentication context via cookie breaks.
Can anyone help with this issue?
Thanks in advance
I am getting "Logon failure: unknown user name or bad password" error when I try to get the groups a user belongs to. User authentication works fine and this is what I can't understand. How can I properly authenticate a user against AD but can't get his group names?
I get user's ID and password. I have a class that deals with authentication.
if ((true == adAuth.IsAuthenticated(sDomain, sID, sPassword)))
{
string sGroups = adAuth.GetGroups();
This is the authentication class:
public class LdapAuthentication
{
string _path;
string _filterAttribute;
public LdapAuthentication(string path)
{
_path = path;
}
public bool IsAuthenticated(string domain, string username, string pwd)
{
string domainAndUsername = domain + "\\" + username;
DirectoryEntry entry = new DirectoryEntry(_path, domainAndUsername, pwd);
try {
//Bind to the native AdsObject to force authentication.
object obj = entry.NativeObject;
DirectorySearcher search = new DirectorySearcher(entry);
search.Filter = "(SAMAccountName=" + username + ")";
search.PropertiesToLoad.Add("cn");
SearchResult result = search.FindOne();
if ((result == null)) {
return false;
}
//Update the new path to the user in the directory.
_path = result.Path;
_filterAttribute = Convert.ToString(result.Properties["cn"][0]);
}
catch (Exception ex) {
throw new Exception("Error authenticating user. " + ex.Message);
//return false;
}
return true;
}
public string GetGroups()
{
//DirectorySearcher search = new DirectorySearcher(_path);
// Use following two lines instead of the above to handle cases of authenticatin against an LDAP server other than local AD domain
DirectoryEntry deSearchRoot = new DirectoryEntry(_path);
DirectorySearcher search = new DirectorySearcher(deSearchRoot);
search.Filter = "(cn=" + _filterAttribute + ")";
search.PropertiesToLoad.Add("memberOf");
StringBuilder groupNames = new StringBuilder();
try {
SearchResult result = search.FindOne();
int propertyCount = result.Properties["memberOf"].Count;
string dn = null;
int equalsIndex = 0;
int commaIndex = 0;
int propertyCounter = 0;
for (propertyCounter = 0; propertyCounter <= propertyCount - 1; propertyCounter++) {
dn = Convert.ToString(result.Properties["memberOf"][propertyCounter]);
equalsIndex = dn.IndexOf("=", 1);
commaIndex = dn.IndexOf(",", 1);
if ((equalsIndex == -1)) {
return null;
}
groupNames.Append(dn.Substring((equalsIndex + 1), (commaIndex - equalsIndex) - 1));
groupNames.Append("|");
}
} catch (Exception ex) {
throw new Exception("Error obtaining group names. " + ex.Message);
}
return groupNames.ToString();
}
IsAuthnticated passes and works fine; GetGroups() returns "Error obtaining group names" followed by "Logon failure: unknown user name or bad password" (i.e. the exception in GetGroups()).
It works fine when I run the app from VS but when I publish it (on the same server), it behaves like this.
Any ideas greatly appreciated.
Never mind; operator error. Code works fine.