Class: Libgss::HttpClientWithSignatureKey::Signature

Inherits:
Object
  • Object
show all
Defined in:
lib/libgss/http_client_with_signature_key.rb

Constant Summary collapse

RESERVED_CHARACTERS = 
/[^a-zA-Z0-9\-\.\_\~]/

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(req_hash, options) ⇒ Signature

Returns a new instance of Signature.



134
135
136
 
# File 'lib/libgss/http_client_with_signature_key.rb', line 134

def initialize(req_hash, options)
  @request, @options = req_hash, options
end

Class Method Details

.sign(req_hash, options) ⇒ Object 



129
130
131
 
# File 'lib/libgss/http_client_with_signature_key.rb', line 129

def sign(req_hash, options)
  new(req_hash, options).sign
end

Instance Method Details

#digest ⇒ Object 



145
146
147
148
149
150
151
152
153
154
 
# File 'lib/libgss/http_client_with_signature_key.rb', line 145

def digest
  s = signature_base_string # base_stringを計算
  digest_class = ::Digest::SHA1 # http://doc.ruby-lang.org/ja/1.9.3/class/Digest=3a=3aSHA1.html

  # digest_class.digest(s) # Digestクラスを使って計算

  # http://doc.ruby-lang.org/ja/1.9.3/library/digest=2fhmac.html
  # http://doc.ruby-lang.org/ja/1.9.3/class/Digest=3a=3aHMAC.html
  ::Digest::HMAC.digest(s, secret, digest_class)
end

#escape(value) ⇒ Object 



193
194
195
196
197
 
# File 'lib/libgss/http_client_with_signature_key.rb', line 193

def escape(value)
  URI::escape(value.to_s, RESERVED_CHARACTERS)
rescue ArgumentError
  URI::escape(value.to_s.force_encoding(Encoding::UTF_8), RESERVED_CHARACTERS)
end

#normalize(params) ⇒ Object 



199
200
201
202
203
204
205
206
207
208
209
210
211
 
# File 'lib/libgss/http_client_with_signature_key.rb', line 199

def normalize(params)
  params.sort.map do |k, values|

    if values.is_a?(Array)
      # multiple values were provided for a single key
      values.sort.collect do |v|
        [escape(k),escape(v)] * "="
      end
    else
      [escape(k),escape(values)] * "="
    end
  end * "&"
end

#normalized_parameters ⇒ Object 



173
174
175
 
# File 'lib/libgss/http_client_with_signature_key.rb', line 173

def normalized_parameters
  normalize(parameters_for_signature)
end

#normalized_uri ⇒ Object 



166
167
168
169
170
171
 
# File 'lib/libgss/http_client_with_signature_key.rb', line 166

def normalized_uri
  u = URI.parse(@request["uri"])
  "#{u.scheme.downcase}://#{u.host.downcase}#{(u.scheme.downcase == 'http' && u.port != 80) || (u.scheme.downcase == 'https' && u.port != 443) ? ":#{u.port}" : ""}#{(u.path && u.path != '') ? u.path : '/'}"
rescue
  @request["uri"]
end

#parameters ⇒ Object 



181
182
183
 
# File 'lib/libgss/http_client_with_signature_key.rb', line 181

def parameters
  @request["parameters"]
end

#parameters_for_signature ⇒ Object 



177
178
179
 
# File 'lib/libgss/http_client_with_signature_key.rb', line 177

def parameters_for_signature
  parameters.reject { |k,v| k == "oauth_signature"}
end

#secret ⇒ Object 



186
187
188
 
# File 'lib/libgss/http_client_with_signature_key.rb', line 186

def secret
  "#{escape(@options[:consumer_secret])}&#{escape(@options[:token_secret])}"
end

#sign ⇒ Object 



138
139
140
141
142
143
 
# File 'lib/libgss/http_client_with_signature_key.rb', line 138

def sign
  s = digest          # ダイジェストを計算
  Base64.encode64(s). # BASE64でエンコード
    chomp.        # 末尾から改行コード(\r or \n)を取り除いた文字列を返す
    gsub(/\n/,'') # 改行を全て取り除く
end

#signature_base_string ⇒ Object 



156
157
158
159
160
161
162
163
164
 
# File 'lib/libgss/http_client_with_signature_key.rb', line 156

def signature_base_string
  base = [
    @request["method"],
    normalized_uri,
    normalized_parameters]
  r = base.map { |v| escape(v) }.join("&")
  $stdout.puts("signature_base_string: #{r.inspect}") if ENV["VERBOSE"]
  r
end