Class: WWW::Mechanize::Chain::AuthHeaders

Inherits:
Object
  • Object
show all
Includes:
Handler
Defined in:
lib/www/mechanize/chain/auth_headers.rb

Constant Summary collapse

CNONCE = 
Digest::MD5.hexdigest("%x" % (Time.now.to_i + rand(65535)))
@@nonce_count = 
Hash.new(0)

Instance Attribute Summary

Attributes included from Handler

#chain

Instance Method Summary collapse

Constructor Details

#initialize(auth_hash, user, password, digest) ⇒ AuthHeaders

Returns a new instance of AuthHeaders.



10
11
12
13
14
15
 
# File 'lib/www/mechanize/chain/auth_headers.rb', line 10

def initialize(auth_hash, user, password, digest)
  @auth_hash = auth_hash
  @user      = user
  @password  = password
  @digest    = digest
end

Instance Method Details

#gen_auth_header(uri, request, auth_header, is_IIS = false) ⇒ Object 



38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
 
# File 'lib/www/mechanize/chain/auth_headers.rb', line 38

def gen_auth_header(uri, request, auth_header, is_IIS = false)
  auth_header =~ /^(\w+) (.*)/

  params = {}
  $2.gsub(/(\w+)=("[^"]*"|[^,]*)/) {
    params[$1] = $2.gsub(/^"/, '').gsub(/"$/, '')
  }
  
  @@nonce_count[params['nonce']] += 1

  a_1 = "#{@user}:#{params['realm']}:#{@password}"
  a_2 = "#{request.method}:#{uri.path}"
  request_digest = ''
  request_digest << Digest::MD5.hexdigest(a_1)
  request_digest << ':' << params['nonce']
  request_digest << ':' << ('%08x' % @@nonce_count[params['nonce']])
  request_digest << ':' << CNONCE
  request_digest << ':' << params['qop']
  request_digest << ':' << Digest::MD5.hexdigest(a_2)
  
  header = ''
  header << "Digest username=\"#{@user}\", "
  if is_IIS then
    header << "qop=\"#{params['qop']}\", "
  else
    header << "qop=#{params['qop']}, "
  end
  header << "uri=\"#{uri.path}\", "
  header << %w{ algorithm opaque nonce realm }.map { |field|
    next unless params[field]
    "#{field}=\"#{params[field]}\""
  }.compact.join(', ')

  header << ", nc=#{'%08x' % @@nonce_count[params['nonce']]}, "
  header << "cnonce=\"#{CNONCE}\", "
  header << "response=\"#{Digest::MD5.hexdigest(request_digest)}\""
  
  return header
end

#handle(ctx, params) ⇒ Object 



17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
 
# File 'lib/www/mechanize/chain/auth_headers.rb', line 17

def handle(ctx, params)
  uri     = params[:uri]
  request = params[:request]

  if( @auth_hash[uri.host] )
    case @auth_hash[uri.host]
    when :basic
      request.basic_auth(@user, @password)
    when :iis_digest
        digest_response = self.gen_auth_header(uri,request, @digest, true)
        request['Authorization'] = digest_response
    when :digest
      if @digest
        digest_response = self.gen_auth_header(uri,request, @digest)
        request['Authorization'] = digest_response
      end
    end
  end
  super
end