Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#Mono C#.NET Core C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicCkPythonChilkat2-PythonRubySQL ServerSwift 2Swift 3/4TclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.jsExcelGo

Tcl Examples

Web API Categories

ASN.1
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Service Bus
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
ECC
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
Geolocation
Google APIs
Google Calendar
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
Gzip
HTML-to-XML/Text

HTTP
HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)
Java KeyStore (JKS)
MHT / HTML Email
MIME
Microsoft Graph
NTLM
OAuth1
OAuth2
OneDrive
OpenSSL
Outlook
PEM
PFX/P12
POP3
PRNG
REST
REST Misc
RSA Encryption
SCP
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(Tcl) IMAP over Multiple Hop SSH

Demonstrates how to read IMAP email (using TCP or TLS) tunneled through mulitple-hop SSH. The scheme looks like this:

Application => ServerSSH1 => ServerSSH2 => IMAPServer

The ConnectThroughSsh and UseSsh methods are added in Chilkat version 9.5.0.55 to accomplish this task.

Chilkat Tcl Extension Downloads

Chilkat Tcl Extension Downloads

load ./chilkat.dll

#  Important: It is helpful to send the contents of the
#  ssh.LastErrorText property when requesting support.

set ssh1 [new_CkSsh]

#  Any string automatically begins a fully-functional 30-day trial.
set success [CkSsh_UnlockComponent $ssh1 "Anything for 30-day trial"]
if {[expr $success != 1]} then {
    puts [CkSsh_lastErrorText $ssh1]
    delete_CkSsh $ssh1
    exit
}

#  Connect directly to the 1st SSH server.
set success [CkSsh_Connect $ssh1 "serverssh1.com" 22]
if {[expr $success != 1]} then {
    puts [CkSsh_lastErrorText $ssh1]
    delete_CkSsh $ssh1
    exit
}

#  Authenticate using login/password:
set success [CkSsh_AuthenticatePw $ssh1 "ssh1Login" "ssh1Password"]
if {[expr $success != 1]} then {
    puts [CkSsh_lastErrorText $ssh1]
    delete_CkSsh $ssh1
    exit
}

#  Connect through the 1st SSH connection to reach a 2nd SSH server.
#  Note: Any number of SSH connections may be simultaneously tunneled through a single
#  existing SSH connection.
set ssh2 [new_CkSsh]

set success [CkSsh_ConnectThroughSsh $ssh2 $ssh1 "serverssh2.com" 22]
if {[expr $success != 1]} then {
    puts [CkSsh_lastErrorText $ssh2]
    delete_CkSsh $ssh1
    delete_CkSsh $ssh2
    exit
}

#  Authenticate with ssh2...
set success [CkSsh_AuthenticatePw $ssh2 "ssh2Login" "ssh2Password"]
if {[expr $success != 1]} then {
    puts [CkSsh_lastErrorText $ssh2]
    delete_CkSsh $ssh1
    delete_CkSsh $ssh2
    exit
}

set imap [new_CkImap]

#  Anything unlocks the component and begins a fully-functional 30-day trial.
set success [CkImap_UnlockComponent $imap "Anything for 30-day trial"]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkSsh $ssh1
    delete_CkSsh $ssh2
    delete_CkImap $imap
    exit
}

#  Tell the IMAP object to connect to the IMAP server though the ssh2 tunnel (which itself is routed through ssh1).
#  The connection looks like this:  Application => ServerSSH1 => ServerSSH2 => IMAPServer
set success [CkImap_UseSsh $imap $ssh2]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkSsh $ssh1
    delete_CkSsh $ssh2
    delete_CkImap $imap
    exit
}

CkImap_put_Ssl $imap 1
CkImap_put_Port $imap 993

#  Connect to an IMAP server (through the multi-hop SSH tunnel)
set success [CkImap_Connect $imap "imap.someimapserver.com"]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkSsh $ssh1
    delete_CkSsh $ssh2
    delete_CkImap $imap
    exit
}

#  Login
set success [CkImap_Login $imap "myLogin" "myPassword"]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkSsh $ssh1
    delete_CkSsh $ssh2
    delete_CkImap $imap
    exit
}

#  Do whatever needs to be done...  for example,

#  Create the new email folder (sub-mailbox) on the IMAP server.
#  If no folder path is provided, the new folder is a sub-mailbox of Inbox.
set success [CkImap_CreateMailbox $imap "newFolder"]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkSsh $ssh1
    delete_CkSsh $ssh2
    delete_CkImap $imap
    exit
}

puts "Success."

#  Close the connection with the IMAP server.  (This closes the tunnel through ssh2)
#  The connection with ssh2 is still alive, and may be used for more connections.
set success [CkImap_Disconnect $imap]

#  Close the connection with ssh2.  (This closes the the tunnel through ssh1.)
#  The connection with ssh1 is still alive, and may be used for more connections.
CkSsh_Disconnect $ssh2

CkSsh_Disconnect $ssh1

delete_CkSsh $ssh1
delete_CkSsh $ssh2
delete_CkImap $imap

 

© 2000-2019 Chilkat Software, Inc. All Rights Reserved.