Class: MessageMediaMessages::HmacAuth

Inherits:
Object
  • Object
show all
Defined in:
lib/message_media_lookups/http/auth/hmac_auth.rb

Overview

Utility class for basic authorization.

Class Method Summary collapse

Class Method Details

.apply(http_request, url = nil, body = nil) ⇒ Object

Add basic authentication to the request. be added.

Parameters:

  • The (HttpRequest) —

    HttpRequest object to which authentication will



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# File 'lib/message_media_lookups/http/auth/hmac_auth.rb', line 23

def self.apply(http_request, url=nil, body=nil)
  username = Configuration.hmac_auth_user_name

  content_signature = ""
  content_header = ""

  now = DateTime.now.new_offset(0).to_time.strftime("%a, %d %b %Y %H:%M:%S GMT")

  date_header = now

  if body != nil
    md5 = Digest::MD5.new
    md5.update(body)

    content_hash = md5.hexdigest
    content_signature = "x-Content-MD5: #{content_hash}\n"
    content_header = "x-Content-MD5 "
    http_request.headers["x-Content-MD5"] = content_hash
  end

  http_request.headers["date"] = date_header

  hmac_signature = HmacAuth.create_signature(date_header, content_signature, url, body)

  joined = "username=\"#{username}\", algorithm=\"hmac-sha1\", headers=\"date #{content_header}request-line\", signature=\"#{hmac_signature}\""
  header_value = "hmac #{joined}"
  http_request.headers["Authorization"] = header_value
end

.create_signature(date, content_signature, url, body = nil) ⇒ Object 



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# File 'lib/message_media_lookups/http/auth/hmac_auth.rb', line 7

def self.create_signature(date, content_signature, url, body=nil)
  request_type = "GET"

  if body != nil
    request_type = "POST"
  end

  signing_string = "date: #{date}\n#{content_signature}#{request_type} #{url} HTTP/1.1"
  hmac = OpenSSL::HMAC.digest(OpenSSL::Digest::Digest.new('sha1'), Configuration.hmac_auth_password.encode("ASCII"), signing_string.encode("ASCII"))

  return Base64.encode64(hmac).chomp
end