Trying to establish a connection from a module in Rails and get no connection to server. I have tested the same code outside Rails and it works fine.
require 'rubygems'
require 'net-ldap'
module Foo
module Bar
class User
attr_reader :ldap_connection
def initialize
#ldap = Net::LDAP.new(:host => "<ip-number>", :port => 389)
#treebase = "ou=People, dc=foo, dc=bar"
username = "cn=Manager"
password = "password"
#ldap.auth username, password
begin
if #ldap.bind
#ldap_connection = true
else
#ldap_connection = false
end
rescue Net::LDAP::LdapError
#ldap_connection = false
end
end
end
end
end
Getting Net::LDAP::LdapError: no connection to server exception.
I found a solution/workaround for my problem with auto-loading in Rails. Added a new initializer to ensure that all Ruby files under lib/ get required:
Added config/initializers/require_files_in_lib.rb with this code
Dir[Rails.root + 'lib/**/*.rb'].each do |file|
require file
end
Read more about the workaround: Rails 3 library not loading until require
Related
I am new to rails and react, this might be a simple one but i cant seem to figure it out.
I am trying to implement a simple jwt authentication using ruby on rails with react as client. I followed the steps that was suggested in :
https://www.pluralsight.com/guides/token-based-authentication-with-ruby-on-rails-5-api
It works as expected on my local system but when i uploaded my app on to heroku it always comes back with error : 500. All the other 'Post' and 'Get' requests work normally. Its only when i try to authenticate and get the auth_token back it runs into 500 error.
this is the request format
post: localhost:3001/api/authenticate
and body:
{
"email": "evin#xyz.com",
"password": "evin"
}
I verified that this data is available on heroku by using get which works perfectly.
I have been working on resolving this for over 2 days now. There is very little information available online on this authentication. There was plenty of recommendations on using auth0. But i could not find much help with this form of authentication.
This is what i have
#Path: /app/controllers/application_controller.rb
class ApplicationController < ActionController::API
before_action :authenticate_request
attr_reader :current_user
private
def authenticate_request
#current_user = AuthorizeApiRequest.call(request.headers).result
render json: { error: 'Not Authorized' }, status: 401 unless #current_user
end
end
#Path: app/controllers/api/authentication_controller.rb
class Api::AuthenticationController < ApplicationController
skip_before_action :authenticate_request
def authenticate
command = AuthenticateUser.call(params[:email], params[:password])
if command.success?
render json: { auth_token: command.result }
else
render json: { error: command.errors }, status: :unauthorized
end
end
end
#Path: /app/commands/authenticate_user.rb
class AuthenticateUser
prepend SimpleCommand
def initialize(email, password)
#email = email
#password = password
end
def call
JsonWebToken.encode(user_id: user.id) if user
end
private
attr_accessor :email, :password
def user
user = User.find_by_email(email)
return user if user && user.authenticate(password)
errors.add :user_authentication, 'invalid credentials'
nil
end
end
#Path: /app/commands/authorize_api_request.rb
class AuthorizeApiRequest
prepend SimpleCommand
def initialize(headers = {})
#headers = headers
end
def call
user
end
private
attr_reader :headers
def user
#user ||= User.find(decoded_auth_token[:user_id]) if decoded_auth_token
#user || errors.add(:token, 'Invalid token') && nil
end
def decoded_auth_token
#decoded_auth_token ||= JsonWebToken.decode(http_auth_header)
end
def http_auth_header
if headers['Authorization'].present?
return headers['Authorization'].split(' ').last
else
errors.add(:token, 'Missing token')
end
nil
end
end
#Path: /lib/json_web_token.rb
class JsonWebToken
class << self
def encode(payload, exp = 24.hours.from_now)
payload[:exp] = exp.to_i
JWT.encode(payload, Rails.application.secrets.secret_key_base)
end
def decode(token)
body = JWT.decode(token, Rails.application.secrets.secret_key_base)[0]
HashWithIndifferentAccess.new body
rescue
nil
end
end
end
#path: /config/application.rb
require_relative 'boot'
require "rails"
# Pick the frameworks you want:
require "active_model/railtie"
require "active_job/railtie"
require "active_record/railtie"
require "active_storage/engine"
require "action_controller/railtie"
require "action_mailer/railtie"
require "action_view/railtie"
require "action_cable/engine"
# require "sprockets/railtie"
require "rails/test_unit/railtie"
# Require the gems listed in Gemfile, including any gems
# you've limited to :test, :development, or :production.
Bundler.require(*Rails.groups)
module Deveycon
class Application < Rails::Application
# Initialize configuration defaults for originally generated Rails version.
config.load_defaults 5.2
# Settings in config/environments/* take precedence over those specified here.
# Application configuration can go into files in config/initializers
# -- all .rb files in that directory are automatically loaded after loading
# the framework and any gems in your application.
#Autoload lib for encrypt and decrypt
config.autoload_paths << Rails.root.join('lib')
# Only loads a smaller set of middleware suitable for API only apps.
# Middleware like session, flash, cookies can be added back manually.
# Skip views, helpers and assets when generating a new resource.
config.api_only = true
end
end
I had similar issues, the API works perfectly on localhost after uploading to Heroku, I still got unauthorized on secure pages even with the token on the headers.
I added
production:
secret_key_base: <%= ENV["SECRET_KEY_BASE"] %>
to config/secrets.yml
Please check the more details log of your heroku application by using Heroku CLI.
heroku logs -t
If the problem with AuthenticateUser::JsonWebToken use auto loaded in your
config/application.rb
class Application < Rails::Application
#.....
config.autoload_paths << Rails.root.join('lib')
#.....
end
I hope that helpful to resolve your issue.
In #lib/JsonWebToken:
Just increase the exp time of token and replace .secrets.secret_key_base with
.credentials.read
class JsonWebToken
class << self
def encode(payload, exp = 1200.hours.from_now)
payload[:exp] = exp.to_i
JWT.encode(payload, Rails.application.credentials.read)
end
def decode(token)
body = JWT.decode(token, Rails.application.credentials.read)[0]
HashWithIndifferentAccess.new body
rescue
nil
end
end
end
I have some experience of Selenium in Python and Cucumber/Watir/RSpec in Ruby, and can write scripts that execute successfully, but they aren't using classes, so I am trying to learn more about classes and splitting the scripts up in to pageobejcts.
I found this example to learn from: http://watir.com/guides/page-objects/ so copied the script and made some minor edits as you'll see below.
I'm using SublimeText 3.x with Ruby 2.4.x on Win10, so you know what tools I'm using.
I put the whole script in to a single .rb file (the only differences are that I replaced the URL and the elements to enter the username and password) and tried to execute it and get the following error:
C:/selenium/ruby/lotw/lotwlogin.rb:3:in `<main>': uninitialized constant Site (NameError).
I added the top line (required 'watir') line and it made no difference to the error encountered.
So I have in lotwlogin.rb essentilly the structure and syntax of the original script with custom elements. However, the core structure is reporting an error and I don't know what to do about it.
Here is my script:
require 'watir'
site = Site.new(Watir::Browser.new :chrome) # was :firefox but that no longer works since FF63
login_page = site.login_page.open
user_page = login_page.login_as "testuser", "testpassword" # dummy user and password for now
user_page.should be_logged_in
class BrowserContainer
def initialize(browser)
#browser = browser
end
end
class Site < BrowserContainer
def login_page
#login_page = LoginPage.new(#browser)
end
def user_page
#user_page = UserPage.new(#browser)
end
def close
#browser.close
end
end
class LoginPage < BrowserContainer
URL = "https://lotw.arrl.org/lotw/login"
def open
#browser.goto URL
##browser.window.maximize
self # no idea what this is for
end
def login_as(user, pass)
user_field.set user
password_field.set pass
login_button.click
next_page = UserPage.new(#browser)
Watir::Wait.until { next_page.loaded? }
next_page
end
private
def user_field
#browser.text_field(:name => "login")
end
def password_field
#browser.text_field(:name => "password")
end
def login_button
#browser.button(:value => "Log On")
end
end # LoginPage
class UserPage < BrowserContainer
def logged_in?
logged_in_element.exists?
end
def loaded?
#browser.h3 == "Welcome to Your Logbook of the World User Account Home Page"
end
private
def logged_in_element
#browser.div(:text => "Log off")
end
end # UserPage
Any assistance how to not get the Site error would be appreciated.
Thanks
Mike
You define class Site only a few lines below. But at that point, it's not yet known.
Move this logic to after all class definitions:
site = Site.new(Watir::Browser.new :chrome) # was :firefox but that no longer works since FF63
login_page = site.login_page.open
user_page = login_page.login_as "testuser", "testpassword" # dummy user and password for now
user_page.should be_logged_in
I am trying to write rspec to test ssh connection. In my spec file even though I have enetered incorrect server password it still says 0 examples, 0 failures. Can someone exmplain me why am I seeing that whereas I am expected to see at least one failure message.
Below is the piece of code of my ssh_host.rb and ssh_host_spec.rb files.
require "java"
require "highline/import"
require 'open-uri'
require 'socket'
require 'rubygems'
require 'net/ssh'
require 'stringio'
require 'net/scp'
require 'colorize'
module SshMod
class SshHost
attr_accessor :hostname, :username, :password
def initialize(host, user, password)
#hostname = host
#username = user
#password = password
#ssh = Net::SSH.start(#hostname, #username, :password => #password)
puts "\t Connection established for #{#hostname}...".blue
end
end
end
Rspec Class:
#!/usr/bin/env rspec
require 'spec_helper'
require 'ssh_host.rb'
describe SshMod::SshHost do
before :each do
#ssh = SshMod::SshHost.new "servername", "user", "wrong_password"
end
end
describe "#new" do
it "takes three parameters and returns sshhostobject" do
#ssh.should_be_an_instance_of SshHost
end
end
ssh_mock = double()
expect(SSH).to receive(:start).and_return(ssh_mock)
There are a number of things wrong with your spec file. your test for new should be within the context of your SshMod::SshHost describe otherwise it doesn't have access to the ssh instance variable. Also, your code should throw some errors because except isn't defined in Kernel it's within the context of an Rspec object. You most likely want to put it in your before.
Regarding your requires in your ruby class, I'd get rid of everything that you don't need (for example, why the explicit inclusion of socket when using net-ssh?).
I believe however, that you're running into the issue where no tests are running most likely due to your project structure (but that's only a guess since you haven't listed it). Rspec by default looks for spec files listed under spec/**/*_spec.rb which you can override with the --pattern flag. See rspec --help for more info.
Here's a working example of your code with a bunch of things cleaned up. I put the source of your code in lib assuming you're making something like a gem.
Gemfile:
source "https://rubygems.org"
gem "colorize"
gem "rspec"
gem "net-ssh"
lib/ssh_host.rb
require 'net/ssh'
require 'colorize'
module SshMod
class SshHost
attr_accessor :hostname, :username, :password
def initialize(host, user, password)
#hostname = host
#username = user
#password = password
#ssh = Net::SSH.start(#hostname, #username, password: #password)
puts "\t Connection established for #{#hostname}...".blue
end
end
end
spec/spec_helper.rb
$:.unshift File.join(File.dirname(__FILE__), '..', 'lib')
require 'rspec'
RSpec.configure do |config|
config.mock_with :rspec do |mocks|
mocks.verify_partial_doubles = true
end
end
spec/ssh_host_spec.rb
require 'spec_helper'
require 'ssh_host'
describe SshMod::SshHost do
let (:ssh) { SshMod::SshHost.new "servername", "user", "wrong_password" }
before :each do
allow(Net::SSH).to receive(:start).and_return(double("connection"))
end
describe "#new" do
it "takes three parameters and returns sshhostobject" do
expect(ssh).to be_a SshMod::SshHost
end
end
end
I am trying to write an app as a gem using ActiveRecord without Rails.
My problem is how to migrate a database already deployed by a user who will not have rake, etc. I have just distributed a schema.rb file and created the db from that. But now I want to allow users to update to a new gem and migrate their db.
I've looked at ActiveRecord::Migrator, but can't figure out how to use it.
For example, how would I tell ActiveRecord::Migrator to run all migrations up from whatever is the current_migration?
Anyone have any suggestions for how to go about this or a good reference?
After going at this fresh this morning I came up with the following which is working well:
module Byr
module Db
class << self
attr_accessor :config
attr_accessor :adapter
attr_accessor :db_name
end
def self.create_sqlite(config)
require 'sqlite3'
config = config.merge('database' => File.join(Byr.db_dir, config['database']))
ActiveRecord::Base.establish_connection(config)
end
def self.create_pg(config)
require 'pg'
# Connect to the postgres db to create the db
ActiveRecord::Base.establish_connection(config.merge('database' => 'postgres',
'schema_search_path' => 'public'))
begin
result = ActiveRecord::Base.connection.create_database(config['database'])
rescue PG::Error, ActiveRecord::StatementInvalid => e
unless e.message =~ /already exists/
raise
end
end
true
end
def self.mysql_creation_options(config)
#charset = ENV['CHARSET'] || 'utf8'
#collation = ENV['COLLATION'] || 'utf8_unicode_ci'
{:charset => (config['charset'] || #charset), :collation => (config['collation'] || #collation)}
end
def self.create_mysql(config)
require 'mysql2'
error_class = config['adapter'] =~ /mysql2/ ? Mysql2::Error : Mysql::Error
begin
ActiveRecord::Base.establish_connection(config.merge('database' => nil))
ActiveRecord::Base.connection.create_database(config['database'], mysql_creation_options(config))
ActiveRecord::Base.establish_connection(config)
rescue error_class => sqlerr
access_denied_error = 1045
if sqlerr.errno == access_denied_error
print "#{sqlerr.error}. \nPlease provide the root password for your mysql installation\n>"
root_password = $stdin.gets.strip
grant_statement = "GRANT ALL PRIVILEGES ON #{config['database']}.* " \
"TO '#{config['username']}'#'localhost' " \
"IDENTIFIED BY '#{config['password']}' WITH GRANT OPTION;"
ActiveRecord::Base.establish_connection(config.merge(
'database' => nil, 'username' => 'root', 'password' => root_password))
ActiveRecord::Base.connection.create_database(config['database'], mysql_creation_options(config))
ActiveRecord::Base.connection.execute grant_statement
ActiveRecord::Base.establish_connection(config)
else
Byr.warn sqlerr.error
Byr.warn "Couldn't create database for #{config.inspect}, charset: #{config['charset'] || #charset}, collation: #{config['collation'] || #collation}"
Byr.warn "(if you set the charset manually, make sure you have a matching collation)" if config['charset']
end
rescue ActiveRecord::StatementInvalid => e
ActiveRecord::Base.establish_connection(config)
end
end
def self.migrate
sys_migration_dir = File.join(Byr.install_dir, "db/migrate")
ActiveRecord::Migration.verbose = true
ActiveRecord::Migrator.migrate(sys_migration_dir)
end
def self.connected?
ActiveRecord::Base.connected? and
ActiveRecord::Base.connection_config[:adapter] == adapter
end
def self.disconnect
ActiveRecord::Base.connection_pool.disconnect!
end
# Really only for testing
def self.drop_db
ActiveRecord::Base.connection.drop_database(Byr.db_config)
end
end
end
Then, to initialize the db via the migrations:
module Byr
class << self
attr_accessor :install_dir
attr_accessor :db_dir
attr_accessor :config_dir
attr_accessor :config_file
attr_accessor :config
attr_accessor :db_config
attr_accessor :adapter
attr_accessor :database
def self.create_db
case db_config['adapter']
when /postgresql/
Byr::Db.create_pg(db_config)
when /sqlite/
Byr::Db.create_sqlite(db_config)
when /mysql/
Byr::Db.create_mysql(db_config)
else
raise ByrError "Your config.yml file specifies an unknown database adapter \'#{config['adapter']}\'"
end
end
def self.connect_db(reconnect = false)
unless reconnect
return true if Byr.connected?
end
ActiveRecord::Base.establish_connection(db_config)
end
def self.migrate
Byr::Db.migrate
end
def self.init(connect = true, adapter = nil)
adapter = canonicalize_adapter(adapter) if adapter
setup_db_config
if connect
create_db and connect_db and migrate
end
end
end
Some irrelevant parts of the code are omitted, but I hope this helps
someone else.
Much of the hard stuff comes from the rake tasks in rails.
When I'm trying to Net::SSH.start to my debian ssh server and transfer a files, every time I've a very strange error message - `start': Net::SSH::AuthenticationFailed, but all the authentication data are correct, I don't know what a problem is. Does anyone faced same problem?
The code was written on ruby and net/ssh module are in use, here is a code:
require 'rubygems'
require 'net/ssh'
def copy_file(session, source_path, destination_path=nil)
destination_path ||= source_path
cmd = %{cat > "#{destination_path.gsub('"', '\"')}"}
session.process.popen3(cmd) do |i, o, e|
puts "Copying #{source_path} to #{destination_path}... "
open(source_path) { |f| i.write(f.read) }
puts 'Done.'
end
end
Net::SSH.start("192.168.112.129",
:username=>'username',
:password=>'password') do |session|
copy_file(session, 'D:/test/1.txt')
copy_file(session, '/home/timur/Documents/new_file.rb"')
end
There is no :username option in net/ssh 2.6, you can set it like parameter:
Net::SSH.start('192.168.112.129', 'username', password: 'password') do |ssh|
foo
end