class IIJ::Sakagura::Core::Middleware::SignatureV2
Constants
- SIGNATURE_KEY
Public Class Methods
new(app, options = {})
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Calls superclass method
# File lib/iij/sakagura/core/middleware/signature_v2.rb, line 11 def initialize(app, options = {}) @access_key = options[:access_key] @secret_key = options[:secret_key] @expire_after = options[:expire_after] || 3600 super(app) end
Public Instance Methods
call(env)
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# File lib/iij/sakagura/core/middleware/signature_v2.rb, line 18 def call(env) env[:body] = required_params.merge(env[:body]) str = make_canonicalized_string(env) env[:body][SIGNATURE_KEY] = generate_signature(str) @app.call(env) end
current_time()
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# File lib/iij/sakagura/core/middleware/signature_v2.rb, line 25 def current_time Time.now end
escape(str)
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# File lib/iij/sakagura/core/middleware/signature_v2.rb, line 56 def escape(str) CGI.escape(str).gsub('+', '%20').gsub('%7E', '~') end
generate_signature(str)
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# File lib/iij/sakagura/core/middleware/signature_v2.rb, line 60 def generate_signature(str) digest_method = OpenSSL::Digest::SHA256.new digest = OpenSSL::HMAC.digest(digest_method, @secret_key, str) Base64.encode64(digest).chomp end
make_canonicalized_string(env)
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# File lib/iij/sakagura/core/middleware/signature_v2.rb, line 40 def make_canonicalized_string(env) url = env[:url] hh = if [80, 443].include? url.port url.host else "#{url.host}:#{url.port}" end [ env[:method].upcase, hh, url.path, make_query_str(env[:body]) ].join("\n") end
make_query_str(params)
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# File lib/iij/sakagura/core/middleware/signature_v2.rb, line 66 def make_query_str(params) params.sort_by{|k,v| k}.map{|k,v| escape(k.to_s) + "=" + escape(v.to_s) }.join('&') end
required_params()
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# File lib/iij/sakagura/core/middleware/signature_v2.rb, line 29 def required_params expire = current_time + @expire_after { "AccessKeyId" => @access_key, "SignatureVersion" => "2", "SignatureMethod" => "HmacSHA256", "Expire" => expire.utc.xmlschema } end