Hii all,
I am telneting a machine using "net/telnet" class that comes in ruby but am having some starnge problem...This is below code i have
require 'net/telnet'
ip="192.168.247.111"
localhost = Net::Telnet::new("Host" =>ip,
"Timeout" => 50,
"Prompt" => /[$%#>] \z/n)
localhost.login("root", "root") { |c| print c }
Now when i run the above code i got en error like
c:/ruby/lib/ruby/1.8/net/telnet.rb:352:in `initialize': getaddrinfo: no address
associated with hostname. (SocketError)
But if i harcoded th Ip address like "Host"=> "192.168.247.111"
am able to make it work means able to telnet to machine...but my requirement it to assign from some variable ....How could i achieve it??
Try this:
require 'net/telnet'
ip="192.168.1.5"
localhost = Net::Telnet::new("Host" => "#{ip}", "Timeout" => 50, "Prompt" => /[$%#>] \z/n)
localhost.login("ziad", "ziad") { |c| print c }
Related
I'm trying to connect to FTP via SOCKS5 proxy using ruby's library Net::FTP. Documentation says to set env variable SOCKS_SERVER in order to connect through proxy (http://ruby-doc.org/stdlib-2.0.0/libdoc/net/ftp/rdoc/Net/FTP.html#method-i-connect), but it seems like it does not work.
Code I'm running is this:
irb(main):054:0> ftp = Net::FTP.new
=> #<Net::FTP:0x007efd08c73768 #mon_owner=nil, #mon_count=0, #mon_mutex=#<Thread::Mutex:0x007efd08c73718>, #binary=true, #passive=true, #debug_mode=false, #resume=false, #sock=#<Net::FTP::NullSocket:0x007efd08c736f0>, #logged_in=false, #open_timeout=nil, #read_timeout=60>
irb(main):056:0> ENV['SOCKS_SERVER'] = 'host:port'
=> "host:port"
irb(main):055:0> ftp.connect('test.rebex.net')
=> nil
irb(main):057:0> ftp.login('demo', 'password')
=> true
irb(main):058:0> ftp.ls
=> ["10-27-15 03:46PM <DIR> pub", "04-08-14 03:09PM 403 readme.txt"]
When I look to proxy logs I can not see any requests going through.
What I'm doing wrong or does anybody have an example how to achieve that?
If your on Windows computer you'll need to use dress_socks gem and Monkeypath:
$socks_server = '127.0.0.1'
$socks_port = '9090'
require 'dress_socks'
class Net::FTP
def open_socket(host, port) # :nodoc:
# puts "opening socket #{#host}:#{port}"
return DressSocks::Socket.new(#host, port,
socks_server: $socks_server, socks_port: $socks_port)
end
end
I wrote a Ruby script that's trying to connect to a Postgres database hosted on Heroku.
If I use a hardcoded password, or if I load the password using gets, everything works fine.
However, if I load the password using IO.noecho, I get the following exception:
storing.rb:11:in `initialize': FATAL: password authentication failed for user "***" (PG::ConnectionBad)
FATAL: no pg_hba.conf entry for host "****", user "***", database "***", SSL off
from storing.rb:11:in `new'
from storing.rb:11:in `create_conn'
from fetch_currencies.rb:11:in `<main>'
Here's my code:
def create_conn(password)
conn = PGconn.connect(
:host => '***',
:port => 5432,
:dbname => '***',
:user => '***',
:password => password)
return conn
end
puts 'Postgres DB password:'
pass = STDIN.noecho(&:gets)
conn = create_conn(pass)
I tried printing the password after loading it, as well as checking whether it's a String, and everything seems to be fine. What could be the problem?
The problem, of course, was that I didn't chomp the input, so I guess the terminating new line character was also passed as part of the password.
The right way to go is then
pass = STDIN.noecho(&:gets).chomp
I need to login in a server with Ruby and Telnet and execute a few commands. My actual script is:
tn = Net::Telnet::new("Host" => "#{ip}", "Port" => 23, "Timeout" => 60,
"Output_log"=>"output_log.log",
"Dump_log"=> "dump_log.log",
"Prompt" => /[#]/ )
tn.cmd("#{USER}\n#{PASS}") { |c| print c }
puts tn.cmd("Conf")
tn.waitfor(/config/) { |str| puts str }
puts tn.cmd("Int fa23")
puts tn.cmd("Shut")
puts tn.cmd("No shut")
puts tn.cmd("Exit")
tn.close
I must only execute the second command (Int fa23) after the string "config" is found at the output. The problem is that waitfor is not working. Here is the output_log:
Trying XX.XX.XX.XX...
Connected to XX.XX.XX.XX.
User Name:username
Password:*************
BOT-SWT-VSAT-AL-...#Conf
BOT-SWT-VSAT-AL-...(config)#
The script stops with waitfor time out error. What am I doing wrong?
Please add the waitfor right after Net::Telnet::new
You should wait for the connection to get established (which happens when creating a Telnet instance) and then wait for the server to respond back every time before sending the next command.
localhost = Net::Telnet::new("Host" => "*****",
"Port" => ***,
"Timeout" => 10,
"Prompt" => /[$%#>] \z/n)
localhost.waitfor(/USER/) {
localhost.cmd("****") {
localhost.waitfor(/PASS/) {
|c| print c
# your next commands
...
# localhost.close
}
}
}
The key here is to make sure that you have received all the packets from the server (until EOF is received) before responding back. Then sometimes, even consuming/waiting for a space character might count (depending to how your the telnet server is designed).
Then, make sure to set the right regular expression for your match.
I have been trying to get port forwarding to work correctly with Net::SSH. From what I understand I need to fork out the Net::SSH session if I want to be able to use it from the same Ruby program so that the event handling loop can actually process packets being sent through the connection. However, this results in the ugliness you can see in the following:
#!/usr/bin/env ruby -w
require 'net/ssh'
require 'httparty'
require 'socket'
include Process
log = Logger.new(STDOUT)
log.level = Logger::DEBUG
local_port = 2006
child_socket, parent_socket = Socket.pair(:UNIX, :DGRAM, 0)
maxlen = 1000
hostname = "www.example.com"
pid = fork do
parent_socket.close
Net::SSH.start("hostname", "username") do |session|
session.logger = log
session.logger.sev_threshold=Logger::Severity::DEBUG
session.forward.local(local_port, hostname, 80)
child_socket.send("ready", 0)
pidi = fork do
msg = child_socket.recv(maxlen)
puts "Message from parent was: #{msg}"
exit
end
session.loop do
status = waitpid(pidi, Process::WNOHANG)
puts "Status: #{status.inspect}"
status.nil?
end
end
end
child_socket.close
puts "Message from child: #{parent_socket.recv(maxlen)}"
resp = HTTParty.post("http://localhost:#{local_port}/", :headers => { "Host" => hostname } )
# the write cannot be the last statement, otherwise the child pid could end up
# not receiving it
parent_socket.write("done")
puts resp.inspect
Can anybody show me a more elegant/better working solution to this?
I spend a lot of time trying to figure out how to correctly implement port forwarding, then I took inspiration from net/ssh/gateway library. I needed a robust solution that works after various possible connection errors. This is what I'm using now, hope it helps:
require 'net/ssh'
ssh_options = ['host', 'login', :password => 'password']
tunnel_port = 2222
begin
run_tunnel_thread = true
tunnel_mutex = Mutex.new
ssh = Net::SSH.start *ssh_options
tunnel_thread = Thread.new do
begin
while run_tunnel_thread do
tunnel_mutex.synchronize { ssh.process 0.01 }
Thread.pass
end
rescue => exc
puts "tunnel thread error: #{exc.message}"
end
end
tunnel_mutex.synchronize do
ssh.forward.local tunnel_port, 'tunnel_host', 22
end
begin
ssh_tunnel = Net::SSH.start 'localhost', 'tunnel_login', :password => 'tunnel_password', :port => tunnel_port
puts ssh_tunnel.exec! 'date'
rescue => exc
puts "tunnel connection error: #{exc.message}"
ensure
ssh_tunnel.close if ssh_tunnel
end
tunnel_mutex.synchronize do
ssh.forward.cancel_local tunnel_port
end
rescue => exc
puts "tunnel error: #{exc.message}"
ensure
run_tunnel_thread = false
tunnel_thread.join if tunnel_thread
ssh.close if ssh
end
That's just how SSH in general is. If you're offended by how ugly it looks, you should probably wrap up that functionality into a port forwarding class of some sort so that the exposed part is a lot more succinct. An interface like this, perhaps:
forwarder = PortForwarder.new(8080, 'remote.host', 80)
So I have found a slightly better implementation. It only requires a single fork but still uses a socket for the communication. It uses IO#read_nonblock for checking if a message is ready. If there isn't one, the method throws an exception, in which case the block continues to return true and the SSH session keeps serving requests. Once the parent is done with the connection it sends a message, which causes child_socket.read_nonblock(maxlen).nil? to return false, making the loop exit and therefore shutting down the SSH connection.
I feel a little better about this, so between that and #tadman's suggestion to wrap it in a port forwarding class I think it's about as good as it'll get. However, any further suggestions for improving this are most welcome.
#!/usr/bin/env ruby -w
require 'net/ssh'
require 'httparty'
require 'socket'
log = Logger.new(STDOUT)
log.level = Logger::DEBUG
local_port = 2006
child_socket, parent_socket = Socket.pair(:UNIX, :DGRAM, 0)
maxlen = 1000
hostname = "www.example.com"
pid = fork do
parent_socket.close
Net::SSH.start("ssh-tunnel-hostname", "username") do |session|
session.logger = log
session.logger.sev_threshold=Logger::Severity::DEBUG
session.forward.local(local_port, hostname, 80)
child_socket.send("ready", 0)
session.loop { child_socket.read_nonblock(maxlen).nil? rescue true }
end
end
child_socket.close
puts "Message from child: #{parent_socket.recv(maxlen)}"
resp = HTTParty.post("http://localhost:#{local_port}/", :headers => { "Host" => hostname } )
# the write cannot be the last statement, otherwise the child pid could end up
# not receiving it
parent_socket.write("done")
puts resp.inspect
OK - I'm in way over my head here. I'm using:
- ruby-1.9.3-p0
- rails-3.1.3
- mail-2.3.0
- devise-1.5.3
Trying to turn on Devise's :confirmable option and start up smtp services in my app. As soon as I add /config/initializers/setup_mail.rb, add Devise's necessary columns in my DB, and the :confirmable attribute to my User model, I get a segmentation fault. It occurs right after a user signs up. Devise is trying to send out the confirmation email, causing the ruby smtp library to crash with the following:
... lib/ruby/1.9.1/net/smtp.rb:583: [BUG] Segmentation fault
The last entry in log/development.log:
Rendered devise/mailer/confirmation_instructions.html.erb (1.2ms)
My /config/initializers/setup_mail.rb file:
ActionMailer::Base.smtp_settings = {
:address => "smtp.gmail.com",
:port => 587,
:domain => "mydomain.com",
:user_name => "support#mydomain.com",
:password => "???????",
:authentication => "plain",
:enable_starttls_auto => true
}
ActionMailer::Base.default_url_options[:host] = "localhost:3000"
My config/environments/development.rb file has the following:
config.action_mailer.delivery_method = :smtp
config.action_mailer.raise_delivery_errors = true
config.action_mailer.default_url_options = { :host => 'localhost:3000' }
Here is the germane code from ruby/1.9.1/net/smtp.rb (line 583 is near the middle):
def ssl_socket(socket, context)
OpenSSL::SSL::SSLSocket.new socket, context
end
def tlsconnect(s)
verified = false
s = ssl_socket(s, #ssl_context)
logging "TLS connection started"
s.sync_close = true
s.connect # THIS IS LINE 583
if #ssl_context.verify_mode != OpenSSL::SSL::VERIFY_NONE
s.post_connection_check(#address)
end
verified = true
s
ensure
s.close unless verified
end
It looks like the segmentation fault occurs when smtp is trying to connect via a SSL socket connection ( s.connect ). In setup_mail.rb I've tried setting :enable_starttls_auto to both true and false. I don't get the segmentation fault when it is set to false but no email goes out, so that is useless.
I'm easily able to connect to gmail's smtp service by running this command from my Mac:
$ telnet smtp.gmail.com 587
Not sure where to go from here - any suggestions?
I had a very similar error (in net/http).
Doing this fixed it:
rvm pkg install openssl
rvm pkg install iconv
rvm pkg install readline
rvm reinstall 1.9.3 --with-iconv-dir=$rvm_path/usr --with-openssl-dir=$rvm_path/usr --with-readline-dir=$rvm_path/usr
The issue is with the way Rails interacts with OpenSSL. This post sums it up very well. http://www.22ideastreet.com/debug/smtp-rb14-bug-segmentation-fault/
The fix is to add this to your .bashrc/.zshrc/.bash_profile
export RUBYOPT="-ropenssl"