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Pure Ruby implementation of the SCP protocol

branch: master
README.rdoc

Net::SCP

Please note: this project is in maintenance mode. It is not under active development but pull requests are very much welcome. Just be sure to include tests! – delano

As of v1.0.5, all gem releases are signed. See INSTALL.

DESCRIPTION:

Net::SCP is a pure-Ruby implementation of the SCP protocol. This operates over SSH (and requires the Net::SSH library), and allows files and directory trees to copied to and from a remote server.

FEATURES/PROBLEMS:

  • Transfer files or entire directory trees to or from a remote host via SCP

  • Can preserve file attributes across transfers

  • Can download files in-memory, or direct-to-disk

  • Support for SCP URI's, and OpenURI

SYNOPSIS:

In a nutshell:

require 'net/scp'

# upload a file to a remote server
Net::SCP.upload!("remote.host.com", "username",
  "/local/path", "/remote/path",
  :ssh => { :password => "password" })

# download a file from a remote server
Net::SCP.download!("remote.host.com", "username",
  "/remote/path", "/local/path",
  :ssh => { :password => "password" })

# download a file to an in-memory buffer
data = Net::SCP::download!("remote.host.com", "username", "/remote/path")

# use a persistent connection to transfer files
Net::SCP.start("remote.host.com", "username", :ssh => { :password => "password" }) do |scp|
  # upload a file to a remote server
  scp.upload! "/local/path", "/remote/path"

  # upload from an in-memory buffer
  scp.upload! StringIO.new("some data to upload"), "/remote/path"

  # run multiple downloads in parallel
  d1 = scp.download("/remote/path", "/local/path")
  d2 = scp.download("/remote/path2", "/local/path2")
  [d1, d2].each { |d| d.wait }
end

# You can also use open-uri to grab data via scp:
require 'uri/open-scp'
data = open("scp://user@host/path/to/file.txt").read

For more information, see Net::SCP.

REQUIREMENTS:

  • Net::SSH 2

If you wish to run the tests, you'll also need:

  • Echoe (for Rakefile use)

  • Mocha (for tests)

INSTALL:

  • gem install net-scp (might need sudo privileges)

However, in order to be sure the code you're installing hasn't been tampered with, it's recommended that you verify the signiture. To do this, you need to add my public key as a trusted certificate (you only need to do this once):

# Add the public key as a trusted certificate
# (You only need to do this once)
$ curl -O https://raw.github.com/net-ssh/net-ssh/master/gem-public_cert.pem
$ gem cert --add gem-public_cert.pem

Then, when install the gem, do so with high security:

$ gem install net-scp -P HighSecurity

If you don't add the public key, you'll see an error like “Couldn't verify data signature”. If you're still having trouble let me know and I'll give you a hand.

Or, you can do it the hard way (without Rubygems):

  • tar xzf net-scp-*.tgz

  • cd net-scp-*

  • ruby setup.rb config

  • ruby setup.rb install (might need sudo privileges)

LICENSE:

(The MIT License)

Copyright © 2008 Jamis Buck <jamis@37signals.com>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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