From: castillo.bryan@...
Date: 2007-03-21T14:55:07+09:00
Subject: Re: FTPS - How to connect with Ruby?

On Mar 20, 10:51 pm, castillo.br...@gmail.com wrote:
> On Mar 20, 10:40 am, "ChrisKaelin" <c...@stonedragon.ch> wrote:
>
>
>
> > On 20 Mrz., 17:42, "Jan Vesel�" <janvesely....@gmail.com> wrote:
>
> > > Hello, I'm new to Ruby and have the first problem I can't solve myself
> > > after a lot of googling - connecting to a FTPS server (FTP AUTH TLS/
> > > SSL).
>
> > > - there's some library called chilkat, but it's not free (for this
> > > little script it's really too expensive to solve it that way)
> > > - ftpfxp library is targeted on fxp transfers, but it connects ok -
> > > but it doesn't seem like a good library for normal ftp-related work
> > > - the standard ftp library doesn't look like it has some support for
> > > firewall/proxy to get there a program like TLSWrap between client and
> > > server and solve the problem
> > > - I found some curl library in prealfa state that could possibly help
> > > me somehow - but it looks like the last solution when everything else
> > > fails (prealfa, weird installation)
>
> > > Could you please give me a hint?
>
> > Try net/sftp Module. With that I made a backup script on window$ using
> > scp and/or sftp, because rsync is not available on the server, I have
> > to back up.
>
> > net/sftp project:http://raa.ruby-lang.org/project/net-sftp/
>
> Unfortunately, sftp is a different protocol than FTPS and that module
> probably won't help.
>
> (3 months ago I received a spec saying my company would communicate
> with another company using SFTP, only to figure out after code had
> been written that they meant FTPS.)
>
> I looked in my install of ruby and found a file net/ftptls.rb.  That
> code looks like it's only for Implicit FTPS, not explicit. I'd try it
> anyway.
>
> The code I ended up writing (in Java) was a class that interfaced to
> the curl command line client.  It worked very well.  As dirty as it
> seemed at the time, I still think it was better than writing JNI to
> the curl C interface.
>
> Here is a quick and dirty class to interface to the curl command line
> client from ruby.  This should work for FTPS, if your curl client was
> compiled with it. curl -V will list the protocols it supports.
>
> class CurlFtp
>
>   CURL = "curl"
>
>   def initialize(url, user, pass, verbose=false)
>     @url = url
>     @user = user
>     @pass = pass
>     @verboseFlag = (verbose) ? '-v' : ''
>   end
>
>   def put(path, &block)
>     command = sprintf "'%s' %s --upload-file - --user '%s:%s' '%s/
> %s'",
>       CURL, @verboseFlag, @user, @pass, @url, path
>      IO.popen(command, "w", &block)
>      raise "Curl error: #{$?.to_i / 256}" if $? != 0
>   end
>
>   def get(path, &block)
>     command = sprintf "'%s' %s --user '%s:%s' '%s/%s'",
>       CURL, @verboseFlag, @user, @pass, @url, CGI.escape(path)
>     IO.popen(command, "r", &block)
>     raise "Curl error: #{$?.to_i / 256}" if $? != 0
>   end
>
> end
>

(In case it wasn't obvious, you should change ftp to ftps in the url
and you may need to supply a port.)

> ftp = CurlFtp.new('ftp://localhost:21', 'bcastill', 'pass', false)
>
> ftp.put('/upload/file.txt') do |io|
>   io.puts("Writing to FTP server....")
> end
>
> puts "Getting data:"
> ftp.get('/upload/file.txt') do |io|
>   io.each_line do |line|
>     puts "LINE: #{line}"
>   end
> end