I am trying to fetch files from a server using FTPS. I'm able to authenticate but when I try to list/fetch the files, I get a "521 Data connections must be encrypted". Is the Net::FTP module capable of this, and how would I accomplish it?
I modified Net::FTPTLS into my own class because I needed to store a self-signed cert.
require 'socket'
require 'openssl'
require 'net/ftp'
module MP
class FTPS < Net::FTP
def connect(host, port=FTP_PORT)
@hostname = host
super
end
def login(user = "anonymous", passwd = nil, cert_file = nil, acct = nil)
store = OpenSSL::X509::Store.new
if cert_file == nil
store.set_default_paths
else
certraw = File.read(cert_file)
cert = OpenSSL::X509::Certificate.new(certraw)
store.add_cert(cert)
end
ctx = OpenSSL::SSL::SSLContext.new('SSLv23')
ctx.cert_store = store
ctx.verify_mode = OpenSSL::SSL::VERIFY_PEER
ctx.key = nil
ctx.cert = cert
voidcmd("AUTH TLS")
@sock = OpenSSL::SSL::SSLSocket.new(@sock, ctx)
@sock.connect
#@sock.post_connection_check(@hostname)
super(user, passwd, acct)
voidcmd("PBSZ 0")
end
end
end
And here's the snippet for trying to fetch the files:
def get_ftpclient(host)
FTPS::new(host)
end
def check_for_files
@ftp = get_ftpclient(@host)
@ftp.passive = true
@ftp.login(@user_name, @password, @cert_file)
@ftp.chdir(@remote_dir)
files = @ftp.nlst
files
end
It fails on the nlst.
Edit: I tried adding voidcmd("PROT P") to the end of the login function but it just hangs for a while, then I eventually get:
IOError: Unsupported record version Unknown-48.48
___BEGIN BACKTRACE___
org/jruby/ext/openssl/SSLSocket.java:564:in `sysread'
/opt/jruby/lib/ruby/gems/1.8/gems/jruby-openssl-0.7.6.1/lib/1.8/openssl/buffering.rb:36:in `fill_rbuff'
/opt/jruby/lib/ruby/gems/1.8/gems/jruby-openssl-0.7.6.1/lib/1.8/openssl/buffering.rb:159:in `eof?'
/opt/jruby/lib/ruby/gems/1.8/gems/jruby-openssl-0.7.6.1/lib/1.8/openssl/buffering.rb:134:in `readline'
/opt/jruby/lib/ruby/1.8/net/ftp.rb:211:in `getline'
/opt/jruby/lib/ruby/1.8/net/ftp.rb:221:in `getmultiline'
/opt/jruby/lib/ruby/1.8/net/ftp.rb:235:in `getresp'
/opt/jruby/lib/ruby/1.8/net/ftp.rb:251:in `voidresp'
/opt/jruby/lib/ruby/1.8/net/ftp.rb:436:in `retrlines'
/opt/jruby/lib/ruby/1.8/monitor.rb:191:in `mon_synchronize'
/opt/jruby/lib/ruby/1.8/net/ftp.rb:422:in `retrlines'
/opt/jruby/lib/ruby/1.8/net/ftp.rb:612:in `nlst'
... etc
I realize this is an old question, but I stumbled upon it while researching FTPS ruby gems.
No. net::FTP does not, on its own, support FTPS.
I highly recommend double-bag-ftps .
Provides a child class of Net::FTP to support implicit and explicit FTPS.
Version 0.1.1 has been working beautifully for me running daily for the past year.
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