Class: AgentXmpp::Xmpp::SASL::DigestMD5

Inherits:
Base
  • Object
show all
Defined in:
lib/agent_xmpp/xmpp/sasl.rb

Overview

Instance Method Summary collapse

Constructor Details

#initialize(stream) ⇒ DigestMD5

.….….….….….….….….….….….….….….….….….….….….….….….….….



102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
 
# File 'lib/agent_xmpp/xmpp/sasl.rb', line 102

def initialize(stream)
  super
  challenge = {}
  error = nil
  @stream.send(generate_auth('DIGEST-MD5')) { |reply|
    if reply.name == 'challenge' and reply.namespace == NS_SASL
      challenge = decode_challenge(reply.text)
    else
      error = reply.first_element(nil).name
    end
    true
  }
  raise error if error
  @nonce = challenge['nonce']
  @realm = challenge['realm']
end

Instance Method Details

#auth(password) ⇒ Object

.….….….….….….….….….….….….….….….….….….….….….….….….….



162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
 
# File 'lib/agent_xmpp/xmpp/sasl.rb', line 162

def auth(password)
  response = {}
  response['nonce'] = @nonce
  response['charset'] = 'utf-8'
  response['username'] = @stream.jid.node
  response['realm'] = @realm || @stream.jid.domain
  response['cnonce'] = generate_nonce
  response['nc'] = '00000001'
  response['qop'] = 'auth'
  response['digest-uri'] = "xmpp/#{@stream.jid.domain}"
  response['response'] = response_value(@stream.jid.node, @stream.jid.domain, response['digest-uri'], password, @nonce, response['cnonce'], response['qop'], response['authzid'])
  response.each do |key,value|
    unless %w(nc qop response charset).include? key
      response[key] = "\"#{value}\""
    end
  end

  response_text = response.collect { |k,v| "#{k}=#{v}" }.join(',')
  r = REXML::Element.new('response')
  r.add_namespace NS_SASL
  r.text = Base64::encode64(response_text).gsub(/\s/, '')

  success_already = false
  error = nil
  @stream.send(r) do |reply|
    if reply.name == 'success'
      success_already = true
    elsif reply.name != 'challenge'
      error = reply.first_element(nil).name
    end
    true
  end

  return if success_already
  raise error if error

  r.text = nil
  @stream.send(r) do |reply|
    if reply.name != 'success'
      error = reply.first_element(nil).name
    end
    true
  end
  raise error if error
  
end

#decode_challenge(challenge) ⇒ Object

.….….….….….….….….….….….….….….….….….….….….….….….….….



120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
 
# File 'lib/agent_xmpp/xmpp/sasl.rb', line 120

def decode_challenge(challenge)
  text = Base64::decode64(challenge)
  res = {}

  state = :key
  key = ''
  value = ''

  text.scan(/./) do |ch|
    if state == :key
      if ch == '='
        state = :value
      else
        key += ch
      end

    elsif state == :value
      if ch == ','
        res[key] = value
        key = ''
        value = ''
        state = :key
      elsif ch == '"' and value == ''
        state = :quote
      else
        value += ch
      end

    elsif state == :quote
      if ch == '"'
        state = :value
      else
        value += ch
      end
    end
  end
  res[key] = value unless key == ''

  res
end