Classic ASP
Classic ASP
SSH Remote Shell Multiple Commands
See more SSH Examples
Demonstrates how to start a shell on a remote SSH server, run a command, and retrieve the output, then run the next command, retrieve the output, etc.Chilkat Classic ASP Downloads
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<%
success = 0
' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.
set ssh = Server.CreateObject("Chilkat.Ssh")
' This is the prompt we'll be expecting to find in
' the output of the remote shell.
myPrompt = "chilkat@ubuntu:~/workspace$"
' Connect to an SSH server:
' Hostname may be an IP address or hostname:
hostname = "www.some-ssh-server.com"
port = 22
success = ssh.Connect(hostname,port)
If (success <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
' Wait a max of 10 seconds when reading responses..
ssh.IdleTimeoutMs = 10000
' Authenticate using login/password:
success = ssh.AuthenticatePw("myLogin","myPassword")
If (success <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
' Open a session channel. (It is possible to have multiple
' session channels open simultaneously.)
channelNum = ssh.OpenSessionChannel()
If (channelNum < 0) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
termType = "dumb"
widthInChars = 120
heightInChars = 40
' Use 0 for pixWidth and pixHeight when the dimensions
' are set in number-of-chars.
pixWidth = 0
pixHeight = 0
success = ssh.SendReqPty(channelNum,termType,widthInChars,heightInChars,pixWidth,pixHeight)
If (success <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
' Start a shell on the channel:
success = ssh.SendReqShell(channelNum)
If (success <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
' Run the 1st command in the remote shell, which will be to
' "cd" to a subdirectory.
success = ssh.ChannelSendString(channelNum,"cd workspace" & vbCrLf,"ansi")
If (success <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
' Retrieve the output.
success = ssh.ChannelReceiveUntilMatch(channelNum,myPrompt,"ansi",1)
If (success <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
' Display what we've received so far. This clears
' the internal receive buffer, which is important.
' After we send the command, we'll be reading until
' the next command prompt. If the command prompt
' is already in the internal receive buffer, it'll think it's
' already finished...
cmdOutput = ssh.GetReceivedText(channelNum,"ansi")
If (ssh.LastMethodSuccess <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
Response.Write "<pre>" & Server.HTMLEncode( cmdOutput) & "</pre>"
' Run the 2nd command in the remote shell, which will be
' to "ls" the directory.
success = ssh.ChannelSendString(channelNum,"ls" & vbCrLf,"ansi")
If (success <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
' Retrieve and display the output.
success = ssh.ChannelReceiveUntilMatch(channelNum,myPrompt,"ansi",1)
If (success <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
cmdOutput = ssh.GetReceivedText(channelNum,"ansi")
If (ssh.LastMethodSuccess <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
Response.Write "<pre>" & Server.HTMLEncode( cmdOutput) & "</pre>"
' Start the final command in the remote shell. This example
' will send a "ls -l" command to retrieve the long format directory listing.
success = ssh.ChannelSendString(channelNum,"ls -l" & vbCrLf,"ansi")
If (success <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
' Send an EOF. This tells the server that no more data will
' be sent on this channel. The channel remains open, and
' the SSH client may still receive output on this channel.
success = ssh.ChannelSendEof(channelNum)
If (success <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
' Read whatever output may already be available on the
' SSH connection. ChannelReadAndPoll returns the number of bytes
' that are available in the channel's internal buffer that
' are ready to be "picked up" by calling GetReceivedText
' or GetReceivedData.
' A return value of -1 indicates failure.
' A return value of -2 indicates a failure via timeout.
' The ChannelReadAndPoll method waits
' for data to arrive on the connection usingi the IdleTimeoutMs
' property setting. Once the first data arrives, it continues
' reading but instead uses the pollTimeoutMs passed in the 2nd argument:
' A return value of -2 indicates a timeout where no data is received.
pollTimeoutMs = 2000
n = ssh.ChannelReadAndPoll(channelNum,pollTimeoutMs)
If (n < 0) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
' Close the channel:
success = ssh.ChannelSendClose(channelNum)
If (success <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
' Perhaps we did not receive all of the commands output.
' To make sure, call ChannelReceiveToClose to accumulate any remaining
' output until the server's corresponding "channel close" is received.
success = ssh.ChannelReceiveToClose(channelNum)
If (success <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
cmdOutput = ssh.GetReceivedText(channelNum,"ansi")
If (ssh.LastMethodSuccess <> 1) Then
Response.Write "<pre>" & Server.HTMLEncode( ssh.LastErrorText) & "</pre>"
Response.End
End If
Response.Write "<pre>" & Server.HTMLEncode( cmdOutput) & "</pre>"
' Disconnect
ssh.Disconnect
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