Tcl Requires Chilkat v10.1.2+

Using WS_FTP Self-signed Certificate file (.crt) and Private Key File. (.key)

See more FTP Examples

Demonstrates how to use a self-signed certificate created by WS_FTP with Chilkat FTP2.

Note: It is usually not necessary for the FTP client to use a client-side certificate. Most FTP servers using SSL and TLS connections (explicit or implicit) do not require client-side certs. In addition, some high-security FTP servers require "real" certificates -- meaning certificates issued by a real certificate authority with a chain of authentication that leads to a trusted root certificate. The certificates created by WS_FTP are self-signed and untrusted.

Tcl

load ./chilkat.dll

set success 0

#  This example requires the Chilkat API to have been previously unlocked.
#  See Global Unlock Sample for sample code.

#  Important:  Before running this program, convert your
#  .crt and .key files to a .p12 using OpenSSL:
#  The command is this:
#  openssl pkcs12 -export -in test.crt -inkey test.key -out test.p12
#  

set ftp [new_CkFtp2]

CkFtp2_put_Hostname $ftp "ftp.example.com"
CkFtp2_put_Port $ftp 21
CkFtp2_put_Username $ftp "testLogin"
CkFtp2_put_Password $ftp "testPassword"

#  This example will use explict TLS/SSL.
#  Establish an explicit secure channel after connection
#  on the standard FTP port 21.
CkFtp2_put_AuthTls $ftp 1

#  The Ssl property is for establishing an implicit SSL connection
#  on port 990.  Because this example uses explicit SSL, it 
#  should remain 0.
CkFtp2_put_Ssl $ftp 0

#  Create an instance of a certificate store object, load a .p12 file,
#  locate the certificate we need, and use it for signing.
#  (a P12/PFX file may contain more than one certificate.)
set certStore [new_CkCertStore]

#  The 1st argument is the filename, the 2nd arg is the 
#  .p12 file's password.  (OpenSSL will prompty you to set a password
#  when converting the .crt and .key into a .p12).
set success [CkCertStore_LoadPfxFile $certStore "test.p12" "secret"]
if {$success != 1} then {
    puts [CkCertStore_lastErrorText $certStore]
    delete_CkFtp2 $ftp
    delete_CkCertStore $certStore
    exit
}

set jsonCN [new_CkJsonObject]

CkJsonObject_UpdateString $jsonCN "CN" "cert common name"

set cert [new_CkCert]

set success [CkCertStore_FindCert $certStore $jsonCN $cert]
if {$success == 0} then {
    puts [CkCertStore_lastErrorText $certStore]
    delete_CkFtp2 $ftp
    delete_CkCertStore $certStore
    delete_CkJsonObject $jsonCN
    delete_CkCert $cert
    exit
}

set success [CkFtp2_SetSslClientCert $ftp $cert]

#  Connect and login to the FTP server.
set success [CkFtp2_Connect $ftp]
if {$success != 1} then {
    puts [CkFtp2_lastErrorText $ftp]
    delete_CkFtp2 $ftp
    delete_CkCertStore $certStore
    delete_CkJsonObject $jsonCN
    delete_CkCert $cert
    exit
} else {
    #  LastErrorText contains information even when
    #  successful. This allows you to visually verify
    #  that the secure connection actually occurred.
    puts [CkFtp2_lastErrorText $ftp]
}

puts "Secure FTP Channel Established!"
puts [CkFtp2_lastErrorText $ftp]

#  Do whatever you're doing to do ...
#  upload files, download files, etc...

#  ...
#  ...

set success [CkFtp2_Disconnect $ftp]

delete_CkFtp2 $ftp
delete_CkCertStore $certStore
delete_CkJsonObject $jsonCN
delete_CkCert $cert