Module: Net::HTTPHeader

Defined in:
lib/amp/support/support.rb

Overview

Written by Eric Hodel <[email protected]>

Constant Summary collapse

CNONCE = 
Digest::MD5.new.update("%x" % (Time.now.to_i + rand(65535))).hexdigest
@@nonce_count = 
-1

Instance Method Summary collapse

Instance Method Details

#digest_auth(user, password, response) ⇒ Object 



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# File 'lib/amp/support/support.rb', line 923

def digest_auth(user, password, response)
  # based on http://segment7.net/projects/ruby/snippets/digest_auth.rb
  @@nonce_count += 1

  response['www-authenticate'] =~ /^(\w+) (.*)/

  params = {}
  $2.gsub(/(\w+)="(.*?)"/) { params[$1] = $2 }

  a_1 = "#{user}:#{params['realm']}:#{password}"
  a_2 = "#{@method}:#{@path}"
  request_digest = ''
  request_digest << Digest::MD5.new.update(a_1).hexdigest
  request_digest << ':' << params['nonce']
  request_digest << ':' << ('%08x' % @@nonce_count)
  request_digest << ':' << CNONCE
  request_digest << ':' << params['qop']
  request_digest << ':' << Digest::MD5.new.update(a_2).hexdigest

  header = []
  header << "Digest username=\"#{user}\""
  header << "realm=\"#{params['realm']}\""
  
  header << "qop=#{params['qop']}"

  header << "algorithm=MD5"
  header << "uri=\"#{@path}\""
  header << "nonce=\"#{params['nonce']}\""
  header << "nc=#{'%08x' % @@nonce_count}"
  header << "cnonce=\"#{CNONCE}\""
  header << "response=\"#{Digest::MD5.new.update(request_digest).hexdigest}\""

  @header['Authorization'] = header
end