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Table of Contents

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tPaymentContext (paymentMW.h)

  • Information provided by Level3: these data members must be filled up by the payment application integrating Agnos API. These data members are provided by a TRD trigggered by a sales system or a test environment (ACE)

  • Information set by Payment System:

    • mEMVContact/mEMVContactless/mMagstripe: these data members are initialized from TERMINAL file by AgnosEP at enpInitialize calling time. They are mandatory only when integrating a CL acceptance system supporting contact and/or magstripe

    • Tags 9F3A/9F3C/9F3D (meant for contact only): not used yet

    • Tag 5F57, account type (meant for contact and contacless): this data is used to set AgnosDB with from a TRD trigggered by a sales system or a test environment (ACE). If missing or lenth invalid 5F57 is systematically set to empty

    • Tag 9F39, POS entry mode (meant for contact and contactless):

      • Magstripe: set by payment application to MAG_MODE = 0x90

      • Contact: set by payment application to MAG_MODE = 0x05

      • Fallback from Contact to Magstripe: set by payment application to FALLBACK_MODE=0x80

      • Contactless: set by contactless card processing to EMV_CL_MODE=0x07 or MAG_CL_MODE=0x91

    • Tag 9F41, Transaction Counter (meant for contact only): this data member is used by emvco.c to demonstrate that each subsequent transsction can be indexed by a counter (for the purpose of L2 TA)

    • mARC (meant for contact and contactless): this data member is set by payment application just before completion from issuer response. It is used to set mCID to TC or AAC

    • mUnableToGoOnline (meant for contact only): this data member is set by payment application just before completion to indicate how to manage risk at GenAC2 time

  • Information set by Payment Application (from Agnos primitives):

    • mRID:

    • mADF:

    • mADFOrder:

  • Information set by EMV Library:

    • mSession

    • mCID

  • Information calculated by Level3: these data members are set automatically on at pmwSetEMVResult calling time. It shall be called at the end of any EMV contact transactions by payment application. It is systematically called by AgnosEP at the end of any contactless transaction

  • Level3<->Level2 communication: this data member is only meant for contactless transaction when supporting data exchange. Even if it is mandatory for few payment schemes during L2 TA, it is not mandatory to support it in production

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Code Block
breakoutModewide
languagec
typedef struct
{
  tOutCome mOutCome;

  tStartingPoint mStartingPoint;
  tOnlineResponseData mOnlineResponseData;
  tCVM mCVM;
  tBoolean mUIReqOnOutcomePresent; // If bTRUE, found in DataExchange
  tBoolean mUIReqOnRestartPresent; // If bTRUE, found in DataExchange
  tBoolean mReceipt;
  tBoolean mDRPresent;	// Data record. If present, found in DataExchange
  tBoolean mDDPresent;	// Discretionary Data. If present, found in DataExchange
  tAlternateInterfacePreference mAlternateInterfacePreference;
  tWord mFieldOffReq;
  tWord mRemovalTimeout;

} tOutComeParameter;

Primitives

Names

Comments

Initialization

pmwGetPaymentMiddlewareVersionNumber

Get AgnosMW version

pmwGetKernelVersion

Get EMV core engine version

pmwInitializePaymentContext

Shall be called before any new transaction

pmwIntializeOutComeParameter

Shall be called before any new transaction

dtmInitializeFromFile

Agnos uses three files to persist the data model:

  • TERMINAL

  • PROCESSING

  • ENTRY_POINT (contactless only)

Use this primitive ahead any transaction flow in order to initialize the transient data model.

Data Model

dtmSetTransactionalContext

Set this context to open an Agnos session (contact only. See emvco.c)

dtmSetData

  • TERMINAL_CTX

  • CONTACT_PROCESSING_CTX

  • CONTACTLESS_PROCESSING_CTX

  • ENTRY_POINT

dtmGetData

  • TERMINAL_CTX

  • CONTACT_PROCESSING_CTX

  • CONTACTLESS_PROCESSING_CTX

  • ENTRY_POINT

EMV Selection

pmwProceedToUniversalFinalSelection

Proceed to standard final selection following EMVCo specs. This function call mechanism can be overloaded in CT and hooked in contactless in order to implement specific selection logic (US, Canada, France)

Others

dtmSelectCTKernel:

  • In contact, don’t call the primitive and implement a specific selection processing (see selectionlogic.c)

  • In contactless, use tApplicationSelectionMethod callback

Others

pmwSetEMVResult

Set EMV parameters after a transaction within tPaymentContext based on Agnos status.

In contact, this shall be systematically called by payment application.

In contactless, AgnosEP encapsulated that call.

pmwCloseSession

Close Agnos session

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