80 lines
2.5 KiB
Ruby
80 lines
2.5 KiB
Ruby
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module PaiementCic
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class TPE
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attr_accessor :hmac_key, :tpe, :societe
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def initialize(options = {})
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self.hmac_key = options[:hmac_key] || PaiementCic.hmac_key
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self.tpe = options[:tpe] || PaiementCic.tpe
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self.societe = options[:societe] || PaiementCic.societe
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end
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def config(reference, amount_in_cents, options = {})
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{
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'TPE' => tpe,
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'date' => Time.now.strftime(PaiementCic::DATE_FORMAT),
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'montant' => ("%.2f" % amount_in_cents) + "EUR",
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'reference' => reference.to_s,
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'texte-libre' => '',
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'version' => PaiementCic::API_VERSION,
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'lgue' => 'FR',
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'societe' => societe,
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'mail' => options[:mail].to_s,
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'nbrech' => options[:nbrech].to_s,
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'dateech1' => options[:dateech1].to_s,
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'montantech1' => options[:montantech1].to_s,
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'dateech2' => options[:dateech2].to_s,
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'montantech2' => options[:montantech2].to_s,
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'dateech3' => options[:dateech3].to_s,
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'montantech3' => options[:montantech3].to_s,
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'dateech4' => options[:dateech4].to_s,
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'montantech4' => options[:montantech4].to_s,
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'options' => options[:options].to_s
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}
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end
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def mac_string params
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[
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tpe, params["date"], params['montant'], params['reference'], params['texte-libre'],
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PaiementCic::API_VERSION, params['code-retour'], params['cvx'], params['vld'], params['brand'],
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params['status3ds'], params['numauto'], params['motifrefus'], params['originecb'],
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params['bincb'], params['hpancb'], params['ipclient'], params['originetr'],
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params['veres'], params['pares']
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].join('*') + "*"
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end
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def verify_hmac params
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params.has_key?('MAC') && valid_hmac?(mac_string(params), params['MAC'])
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end
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# Check if the HMAC matches the HMAC of the data string
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def valid_hmac?(mac_string, sent_mac)
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computeHMACSHA1(mac_string) == sent_mac.downcase
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end
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# Return the HMAC for a data string
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def computeHMACSHA1(data)
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PaiementCic.hmac_sha1(usable_key, data).downcase
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end
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private
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# Return the key to be used in the hmac function
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def usable_key
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hex_string_key = hmac_key[0..37]
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hex_final = hmac_key[38..40] + "00";
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cca0 = hex_final[0].ord
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if cca0 > 70 && cca0 < 97
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hex_string_key += (cca0 - 23).chr + hex_final[1..2]
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elsif hex_final[1..2] == "M"
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hex_string_key += hex_final[0..1] + "0"
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else
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hex_string_key += hex_final[0..2]
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end
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[hex_string_key].pack("H*")
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end
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end
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end
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