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

ASN.1
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Service Bus
Base64
Bounced Email
Box
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
ECC
Email Object
Encryption
FTP
Facebook
FileAccess
Firebase
GMail REST API
GeoOp
Google APIs
Google Calendar
Google Cloud Storage
Google Drive
Google Sheets
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)
Jira
MHT / HTML Email
MIME
Microsoft Graph
NTLM
OAuth1
OAuth2
OneDrive
OpenSSL
Outlook
PEM
PFX/P12
POP3
PRNG
PayPal
Peoplevox
QuickBooks
REST
REST Misc
RSA Encryption
SCP
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
SharePoint
Shopify
Socket/SSL/TLS
Spider
Stream
Stripe
SugarCRM
Tar Archive
Twitter
Upload
VoiceBase
Walmart
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Xero
Zip
curl
eBay

 

 

 

(Tcl) IMAP SSH Tunneling (Port Forwarding)

Demonstrates how to setup and use an SSH tunnel for IMAP.

Chilkat Tcl Extension Downloads

Chilkat Tcl Extension Downloads

load ./chilkat.dll

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_CkImap $imap
    exit
}

#  The SSH hostname may be a hostname or an
#  IP address, such as "192.168.1.108".
#  The port is typically 22 (the standard port for SSH).
set sshHostname "www.mysshserver.com"
set sshPort 22

#  Connect to an SSH server and establish the SSH tunnel:
set success [CkImap_SshOpenTunnel $imap $sshHostname $sshPort]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkImap $imap
    exit
}

#  Authenticate with the SSH server via a login/password
#  or with a public key.
#  This example demonstrates SSH password authentication.
#  Note: This is not authenticating with the IMAP server, it is
#  for authenticating with the SSH server, which is separate.
set success [CkImap_SshAuthenticatePw $imap "mySshLogin" "mySshPassword"]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkImap $imap
    exit
}

#  OK, the SSH tunnel is setup.  The IMAP component may
#  be used exactly the same as usual, except all communications
#  are sent through the SSH tunnel.

#  Connect to an IMAP server via the SSH tunnel.
#  Because the SSH tunnel has been previously setup,
#  this does not establish a direct connection with the IMAP
#  server.  It directs the SSH server to establish the connection.

#  In this example, the IMAP server requires SSL/TLS.  The TLS connection
#  will be enclosed within the SSH tunnel.
CkImap_put_Ssl $imap 1
CkImap_put_Port $imap 993
set success [CkImap_Connect $imap "imap.my-imap-server.com"]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkImap $imap
    exit
}

#  Authenticate with the IMAP server via the SSH tunnel.
set success [CkImap_Login $imap "myLogin" "myPassword"]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkImap $imap
    exit
}

#  Select an IMAP mailbox
set success [CkImap_SelectMailbox $imap "Inbox"]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkImap $imap
    exit
}

#  How many messages in Inbox?
set msgCount [CkImap_get_NumMessages $imap]
if {[expr $msgCount == 0]} then {
    puts "No messages found."
    delete_CkImap $imap
    exit
}

set upperBound 10
if {[expr $msgCount < $upperBound]} then {
    set upperBound $msgCount
}

#  Download up to the 1st 10 messages.

set bUid 0
for {set i 1} {$i <= $upperBound} {incr i} {

    # email is a CkEmail
    set email [CkImap_FetchSingle $imap $i $bUid]
    if {[string equal $email "NULL"]} then {
        puts [CkImap_lastErrorText $imap]
        delete_CkImap $imap
        exit

    }     else {
        puts [CkEmail_from $email]
        puts [CkEmail_subject $email]
        puts "----"

        delete_CkEmail $email

    }

}

#  Disconnect from the IMAP server.
#  The SSH tunnel remains open.
set success [CkImap_Disconnect $imap]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkImap $imap
    exit
}

#  It is possible to re-use the existing SSH tunnel for the next connection:
set success [CkImap_Connect $imap "imap.my-imap-server2.com"]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkImap $imap
    exit
}

#  Review the LastErrorText to see that the connection was made via the SSH tunnel:
puts [CkImap_lastErrorText $imap]

set success [CkImap_Disconnect $imap]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkImap $imap
    exit
}

#  Finally, close the SSH tunnel.
set success [CkImap_SshCloseTunnel $imap]
if {[expr $success != 1]} then {
    puts [CkImap_lastErrorText $imap]
    delete_CkImap $imap
    exit
}

puts "IMAP SSH tunneling example completed."

delete_CkImap $imap

 

© 2000-2016 Chilkat Software, Inc. All Rights Reserved.