Module: BlackStack::Netting

Defined in:
lib/functions.rb

Overview

Network

Defined Under Namespace

Classes: ApiCallException

Constant Summary collapse

CALL_METHOD_GET = 
'get'
CALL_METHOD_POST = 
'post'
DEFAULT_SSL_VERIFY_MODE = 
OpenSSL::SSL::VERIFY_NONE
SUCCESS = 
'success'
DEFAULT_OPEN_TIMEOUT =

seconds to wait for the initial connection

10
DEFAULT_READ_TIMEOUT =

seconds to wait for each response

30
DEFAULT_RETRY_ATTEMPTS = 
3
@@lockfiles = 
[]
@@max_api_call_channels =

0 means infinite

0

Class Method Summary collapse

Class Method Details

.add_param(url, param_name, param_value) ⇒ Object

Add a parameter to the url. It doesn’t validate if the param already exists.



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# File 'lib/functions.rb', line 1131

def self.add_param(url, param_name, param_value)
  uri = URI(url)
  params = URI.decode_www_form(uri.query || '')

  if (params.size==0)
    params << [param_name, param_value]
    uri.query = URI.encode_www_form(params)
    return uri.to_s
  else
    uri.query = URI.encode_www_form(params)
    return uri.to_s + "&" + param_name + "=" + param_value
  end
end

.api_call(url, params = {}, method = BlackStack::Netting::CALL_METHOD_POST, ssl_verify_mode = BlackStack::Netting::DEFAULT_SSL_VERIFY_MODE, max_retries = 5) ⇒ Object

TODO: deprecated



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# File 'lib/functions.rb', line 1011

def self.api_call(url, params={}, method=BlackStack::Netting::CALL_METHOD_POST, ssl_verify_mode=BlackStack::Netting::DEFAULT_SSL_VERIFY_MODE, max_retries=5)
  nTries = 0
  bSuccess = false
  parsed = nil
  sError = ""
  while (nTries < max_retries && bSuccess == false)
    begin
      nTries = nTries + 1
      res = BlackStack::Netting::call_post(url, params, ssl_verify_mode) if method==BlackStack::Netting::CALL_METHOD_POST
      res = BlackStack::Netting::call_get(url, params, ssl_verify_mode) if method==BlackStack::Netting::CALL_METHOD_GET
      parsed = JSON.parse(res.body)
      if (parsed['status']==BlackStack::Netting::SUCCESS)
        bSuccess = true
      else
        sError = "Status: #{parsed['status'].to_s}. Description: #{parsed['value'].to_s}."
      end
    rescue Errno::ECONNREFUSED => e
      sError = "Errno::ECONNREFUSED:" + e.to_console
    rescue => e2
      sError = "Exception:" + e2.to_console
    end
  end # while

  if (bSuccess==false)
    raise "#{sError}"
  end
end

.call_get(url, params = {}, ssl_verify_mode = BlackStack::Netting::DEFAULT_SSL_VERIFY_MODE, support_redirections = true) ⇒ Object

New call_get



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# File 'lib/functions.rb', line 906

def self.call_get(url, params = {}, ssl_verify_mode=BlackStack::Netting::DEFAULT_SSL_VERIFY_MODE, support_redirections=true)
  uri = URI(url)
  uri.query = URI.encode_www_form(params)
  Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https', :verify_mode => ssl_verify_mode) do |http|
    req = Net::HTTP::Get.new uri
    #req.body = body if !body.nil?
    res = http.request req
    case res
    when Net::HTTPSuccess then res
    when Net::HTTPRedirection then BlackStack::Netting::call_get(URI(res['location']), params, ssl_verify_mode, false) if support_redirections
    else
      res.error!
    end
  end
end

.call_post(url, body = {}, ssl_verify_mode = BlackStack::Netting::DEFAULT_SSL_VERIFY_MODE, support_redirections = true) ⇒ Object

Call the API and return th result.

Unlike Net::HTTP::Post, this method support complex json descriptors in order to submit complex data strucutres to access points. For more information about support for complex data structures, reference to: github.com/leandrosardi/mysaas/issues/59

url: valid internet address body: hash of body to attach in the call ssl_verify_mode: you can disabele SSL verification here. max_channels: this method use lockfiles to prevent an excesive number of API calls from each datacenter. There is not allowed more simultaneous calls than max_channels.

TODO: parameter support_redirections has been deprecated.



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# File 'lib/functions.rb', line 934

def self.call_post(url,
  body = {},
  ssl_verify_mode = BlackStack::Netting::DEFAULT_SSL_VERIFY_MODE,
  support_redirections = true)

  max_redirects = 5
  attempts      = 0

  while attempts < DEFAULT_RETRY_ATTEMPTS
    begin
      # Create a basic Faraday connection
      conn = Faraday.new(
        url: url, #"#{uri.scheme}://#{uri.host}:#{uri.port}", 
        ssl: { verify: ssl_verify_mode != OpenSSL::SSL::VERIFY_NONE },
        request: {
          open_timeout: DEFAULT_OPEN_TIMEOUT,
          timeout:      DEFAULT_READ_TIMEOUT
        }
      ) do |f|
        f.adapter Faraday.default_adapter
      end

      # Perform the initial POST request
      response = conn.post(uri.path) do |req|
        req.body = JSON.generate(body) # Manually serialize to JSON
        req.headers['Content-Type'] = 'application/json'
        req.headers['Accept']       = 'application/json'
      end

      # Manually handle HTTP redirects if requested
      redirect_count = 0
      while support_redirections &&
        response.status.between?(300, 399) &&
        response.headers['location'] &&
        redirect_count < max_redirects

        redirect_count += 1
        new_url = URI.join(url, response.headers['location']).to_s

        # Update `url` for the next iteration
        url = new_url
        uri = URI.parse(new_url)

        response = conn.post(uri.path) do |req|
          req.body = JSON.generate(body)
          req.headers['Content-Type'] = 'application/json'
          req.headers['Accept']       = 'application/json'
        end
      end

      # Raise an error if the final response is not 2xx
      unless response.success?
        raise "HTTP #{response.status}: #{response.body}"
      end

      # If all is good, return the Faraday response object
      return response

    rescue Errno::ETIMEDOUT, Timeout::Error, Faraday::ConnectionFailed => e
      # Basic retry logic for transient network errors
      attempts += 1
      if attempts < DEFAULT_RETRY_ATTEMPTS
        sleep_time = 2**attempts
        sleep(sleep_time)  # Exponential backoff
        retry
      else
        # Too many failures, re-raise
        raise e
      end
    rescue => e
      # For any other error, just re-raise
      raise e
    end
  end
end

.change_param(url, param_name, param_value) ⇒ Object

Changes the value of a parameter in the url. It doesn’t validate if the param already exists.



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# File 'lib/functions.rb', line 1146

def self.change_param(url, param_name, param_value)
  uri = URI(url)
#  params = URI.decode_www_form(uri.query || [])
  params = CGI.parse(uri.query)
  params["start"] = param_value
  uri.query = URI.encode_www_form(params)
  uri.to_s
end

.download(url, to) ⇒ Object

Download a file from an url to a local folder. url: must be somedomain.net instead of somedomain.net/, otherwise, it will throw exception. to: must be a valid path to a folder.



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# File 'lib/functions.rb', line 1042

def self.download(url, to)
  uri = URI(url)
  domain = uri.host.start_with?('www.') ? uri.host[4..-1] : uri.host
  path = uri.path
  filename = path.split("/").last
  Net::HTTP.start(domain) do |http|
    resp = http.get(path)
    open(to, "wb") do |file|
      file.write(resp.body)
    end
  end
end

.file_age(filename) ⇒ Object

returns the age in days of the given file



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# File 'lib/functions.rb', line 1078

def self.file_age(filename)
  (Time.now - File.ctime(filename))/(24*3600)
end

.get_host_without_www(url) ⇒ Object

Removes the ‘www.’ from an URL.



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# File 'lib/functions.rb', line 1062

def self.get_host_without_www(url)
  url = "http://#{url}" if URI.parse(url).scheme.nil?
  host = URI.parse(url).host.downcase
  host.start_with?('www.') ? host[4..-1] : host
end

.get_redirect(url) ⇒ Object

Get the final URL if a web page is redirecting.



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# File 'lib/functions.rb', line 1069

def self.get_redirect(url)
  uri = URI.parse(url)
  protocol = uri.scheme
  host = uri.host.downcase
  res = Net::HTTP.get_response(uri)
  "#{protocol}://#{host}#{res['location']}"
end

.get_url_extension(url) ⇒ Object

Return the extension of the last path into an URL. Example: get_url_extension(“connect.data.com/sitemap_index.xml?foo_param=foo_value”) => “.xml”



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# File 'lib/functions.rb', line 1057

def self.get_url_extension(url)
  return File.extname(URI.parse(url).path.to_s)
end

.getDomainFromEmail(email) ⇒ Object 



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# File 'lib/functions.rb', line 1183

def self.getDomainFromEmail(email)
  if email.email?
    return email.split("@").last
  else
    raise "getDomainFromEmail: Wrong email format."
  end
end

.getDomainFromUrl(url) ⇒ Object

get the domain from any url



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# File 'lib/functions.rb', line 1167

def self.getDomainFromUrl(url)
  if (url !~ /^http:\/\//i && url !~ /^https:\/\//i)
    url = "http://#{url}"
  end

  if (URI.parse(url).host == nil)
    raise "Cannot get domain for #{url}"
  end

  if (url.to_s.length>0)
    return URI.parse(url).host.sub(/^www\./, '')
  else
    return nil
  end
end

.getMailHandler(email) ⇒ Object

raise an exception if email is not a valid email address. return an array with the companies who are hosting an email address, by running the linux command host.



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# File 'lib/functions.rb', line 1224

def self.getMailHandler(email)
  value = email
  # raise an exception if the data type is an email, but the email is not valid.
  raise "Email #{value} is not valid" if !value.email?
  # extract the domain from the email
  domain = value.split('@').last
  # run the `host` command
  s = `host -t mx #{domain}`
  # extract the domains from the output
  a = s.split("\n").map { |l| l.split.last }
  # extract the company who is hosting the mail
  a.map { |d| d.split('.').last(2).join('.') }.uniq
end

.getWhoisDomains(domain, allow_heuristic_to_avoid_hosting_companies = false) ⇒ Object 



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# File 'lib/functions.rb', line 1191

def self.getWhoisDomains(domain, allow_heuristic_to_avoid_hosting_companies=false)
  a = Array.new
  c = Whois::Client.new
  r = c.lookup(domain)

  res = r.to_s.scan(/Registrant Email: (#{BlackStack::Strings::MATCH_EMAIL})/).first
  if (res!=nil)
    a << BlackStack::Netting::getDomainFromEmail(res[0].downcase)
  end

  res = r.to_s.scan(/Admin Email: (#{BlackStack::Strings::MATCH_EMAIL})/).first
  if (res!=nil)
    a << BlackStack::Netting::getDomainFromEmail(res[0].downcase)
  end

  res = r.to_s.scan(/Tech Email: (#{BlackStack::Strings::MATCH_EMAIL})/).first
  if (res!=nil)
    a << BlackStack::Netting::getDomainFromEmail(res[0].downcase)
  end

  # remover duplicados
  a = a.uniq

  #
  if (allow_heuristic_to_avoid_hosting_companies==true)
    # TODO: develop this feature
  end

  return a
end

.isPersonalEmail?(email) ⇒ Boolean

raise an exception if email is not a valid email address. return if the email domain is gmail, hotmail, outlook, yahoo, comcast, aol, msn or sbcglobal.

Returns:

  • (Boolean) 


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# File 'lib/functions.rb', line 1240

def self.isPersonalEmail?(email)
  value = email
  # raise an exception if the data type is an email, but the email is not valid.
  raise "Email #{value} is not valid" if !value.email?
  # extract the domain from the email
  domain = value.split('@').last
  #
  return domain=~/gmail\.com/ || domain=~/hotmail\.com/ || domain=~/outlook\.com/ || domain=~/yahoo\.com/ || domain=~/comcast\.com/ || domain=~/aol\.com/ || domain=~/msn\.com/ || domain=~/sbcglobal\.net/ ? true : false
end

.lockfiles ⇒ Object 



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# File 'lib/functions.rb', line 877

def self.lockfiles()
  @@lockfiles
end

.max_api_call_channels ⇒ Object 



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# File 'lib/functions.rb', line 873

def self.max_api_call_channels()
  @@max_api_call_channels
end

.params(url) ⇒ Object

returns a hash with the parametes in the url



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# File 'lib/functions.rb', line 1118

def self.params(url)
  # TODO: Corregir este parche:
  # => El codigo de abajo usa la URL de una busqueda en google. Esta url generara una excepcion cuando se intenta parsear sus parametros.
  # => Ejecutar las 2 lineas de abajo para verificar.
  # => url = "https://www.google.com/webhp#q=[lead+generation]+%22John%22+%22Greater+New+York+City+Area+*+Financial+Services%22+site:linkedin.com%2Fpub+-site:linkedin.com%2Fpub%2Fdir"
  # => p = CGI::parse(URI.parse(url).query)
  # => La linea de abajo hace un gsbub que hace que esta url siga funcionando como busqueda de google, y ademas se posible parsearla.
  url = url.gsub("webhp#q=", "webhp?q=")

  return CGI::parse(URI.parse(url).query)
end

.set(h) ⇒ Object 



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# File 'lib/functions.rb', line 881

def self.set(h)
  @@max_api_call_channels = h[:max_api_call_channels]
  @@lockfiles = []

  i = 0
  while i<@@max_api_call_channels
    @@lockfiles << File.open("./apicall.channel_#{i.to_s}.lock", "w")
    i+=1
  end
end

.set_param(url, param_name, param_value) ⇒ Object

Change or add the value of a parameter in the url, depending if the parameter already exists or not.



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# File 'lib/functions.rb', line 1156

def self.set_param(url, param_name, param_value)
  params = BlackStack::Netting::params(url)
  if ( params.has_key?(param_name) == true )
    newurl = BlackStack::Netting::change_param(url, param_name, param_value)
  else
    newurl = BlackStack::Netting::add_param(url, param_name, param_value)
  end
  return newurl
end