This is a reference documentation of the inWebo mAccess library (iOS). It lists error codes and functions integrated in the library.

Download inWebo mAccess library

The last version of inWebo mAccess library is available on the Resources Downloads page.

The inWebo mAccess library for iOS is a static C library. To integrate it in Swift, go over the implementation guide and the sample application to know how to integrate the inWebo SDK to your iOS application.

Error codes

Code

Value

Description

IW_ERR_OK

0

no error

IW_ERR_NETWORK

1

network or server unreachable

IW_ERR_CODE

2

The Activation code is incorrect

IW_ERR_SN

3

one argument does not have the right syntax

IW_ERR_ACCESS

4

access refused

IW_ERR_VERSION

5

version error

IW_ERR_BLOCKED

7

account is blocked

IW_ERR_STATE

8

internal state not correct

IW_ERR_NODEVICE

9

device is disabled or unknown

IW_ERR_NOCA

10

User must activate inWebo helium or inWebo Desktop Token before achieving this operation

IW_ERR_NOSRV

11

No service is available

IW_ERR_PINREUSED

12

the new password equals the previous one

IW_ERR_SYNCHROFAILED

13

the operation succeeded but it required a post-synchronization which failed

IW_ERR_FORBIDDEN

14

forbidden operation (due to activated state/blocked state/upgradable state)

IW_ERR_PINREFUSED

15

the password is refused (bad format)

IW_ERR_TIMEOUT

16

timeout expired between xxxStart and xxxFinalize

IW_ERR_BIOKEY

26

device is locked due to biokey errors

IW_DESYNCHRONIZED

27

device desynchronized

IW_ERR_OTHER

999

any other error

Pin Mode codes

Code

Value

Description

IW_PINMODE_NONE

0

no pin is required (leave “”)

IW_PINMODE_CURRENT

1

current pin is required

IW_PINMODE_NEW

2

a new pin is required

IW_PINMODE_BIO

8

a biokey is required

IW_PINMODE_CURRENT | IW_PINMODE_BIO

9

a pin OR biokey is required

Functions

The following functions are declared is the header file iw.h.

Activation

IWActivationStart

int IWActivationStart(IW* iw,char* code)
CODE

Function description: starts the device activation process.

Parameters:

  • code (char*) → activation code

Returns: an error code:

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is already activated

  • IW_ERR_SN: syntax error for “code”

  • IW_ERR_VERSION: version error, user must upgrade the device

IWActivationFinalize

int IWActivationFinalize(IW* iw,char* code,char* pin,char* name)
CODE

Function description: finalizes the device activation process

Parameters:

  • code (char*) → activation code

  • pin (char*) → the user’s pin code

  • name (char*) → the name of the device that is about to be activated

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is already activated

  • IW_ERR_SYNCHROFAILED: the device is activated but not synchronized. Should propose to resynchronize.

  • IW_ERR_PINREFUSED: syntax error for “pin”

  • IW_ERR_CODE: bad code.

  • IW_ERR_SN: syntax error for “code”

  • IW_ERR_TIMEOUT: timeout since ActivationStart

Unlock - Reset PIN

IWResetStart

int IWResetStart(IW* iw,char* code)
CODE

Function description: starts the reset pin process

Parameters:

  • code (char*)→ unlock code

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is not activated or not blocked or to be upgraded

  • IW_ERR_CODE: bad code.

  • IW_ERR_SN: syntax error for “code”

  • IW_ERR_NODEVICE: the device is unknown or has been permanently disabled

  • IW_ERR_VERSION: version error, user must upgrade the device (see IWNewVersionAvailable)

IWResetFinalize

 int IWResetFinalize(IW* iw,char* code,char* pin)
CODE

Function description: finalizes the reset pin process

Parameters:

  • code (char*) → unlock code

  • pin (char*) → the user’s pin code

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is not activated or blocked or to be upgraded

  • IW_ERR_ACCESS: wrong password.

  • IW_ERR_SYNCHROFAILED: the last step of the synchronization failed. Should propose to resynchronize.

  • IW_ERR_SN: syntax error for “code”

  • IW_ERR_PINREFUSED: syntax error for “password”

  • IW_ERR_NODEVICE: the device is unknown or has been permanently disabled

  • IW_ERR_TIMEOUT: timeout since IWResetStart

Synchronization

IWSynchronizeStart

int IWSynchronizeStart(IW* iw)
CODE

Function description: starts the synchronization process to synchronize information between the application and InWebo server.

Returns: an error code

IWSynchronizeFinalize

int IWSynchronizeFinalize(IW* iw,char* pin)
CODE

Function description: finalizes the synchronization process to synchronize information between the application and InWebo server.

Parameters:

  • pin (char*) → the user’s pin code

Returns: an error code

PIN update

IWPwdUpdateStart

int IWPwdUpdateStart(IW* iw)
CODE

Function description: starts the pin update process

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is not activated or not blocked or to be upgraded

  • IW_ERR_NODEVICE: the device is unknown or has been permanently disabled

  • IW_ERR_VERSION: version error, user must upgrade the device (see NewVersionAvailable)

IWPwdUpdateFinalize

int IWPwdUpdateFinalize(IW* iw,char* newpin,char* pin)
CODE

Function description: finalizes the pin update process

Parameters:

  • newpin (char) → the user’s new pin code

  • pin (char*) → the user’s current pin code that is about to be replaced by newpin

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is not activated or blocked or to be upgraded

  • IW_ERR_ACCESS: wrong password.

  • IW_ERR_SYNCHROFAILED: the last step of the synchronization failed. Should propose to resynchronize.

  • IW_ERR_PINREFUSED: syntax error for “password”

  • IW_ERR_PINREUSED: new password equals previous password

  • IW_ERR_NODEVICE: the device is unknown or has been permanently disabled

  • IW_ERR_TIMEOUT: timeout since IWPwdUpdateStart

Reset all Biometric keys

IWUnsetBiokeysStart

int IWUnsetBiokeysStart(IW* iw)
CODE

Function description: starts the process of resetting all biometric keys.

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is not activated or not blocked or to be upgraded

  • IW_ERR_NODEVICE: the device is unknown or has been permanently disabled

  • IW_ERR_VERSION: version error, user must upgrade the device (see IWNewVersionAvailable above)

A call to IWPinMode () will indicate which kind of password is required (current or none)

IWUnsetBiokeysFinalize

int IWUnsetBiokeysFinalize(IW* iw, char* pin)
CODE

Function description: finalize the process of resetting all biometric keys.

Parameters:

  • pin (char*) → the user’s pin code

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is not activated or blocked or to be upgraded

  • IW_ERR_ACCESS: wrong password.

  • IW_ERR_NODEVICE: the device is unknown or has been permanently disabled

  • IW_ERR_TIMEOUT: timeout since UnsetBiokeysStart

Register Biometric key

IWSetBiokeyStart

int IWSetBiokeyStart(IW* iw)
CODE

Function description: starts the biometrics registration process

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is not activated or not blocked or to be upgraded

  • IW_ERR_NODEVICE: the device is unknown or has been permanently disabled

  • IW_ERR_VERSION: version error, user must upgrade the device (see IWNewVersionAvailable)

IWSetBiokeyFinalize

int IWSetBiokeyFinalize(IW* iw, char* biokey, char* pin)
CODE

Function description: finalizes the biometrics registration process

Parameters:

  • biokey(char*) → biometric key

  • pin(char*) → the user’s pin code

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is not activated or blocked or to be upgraded

  • IW_ERR_ACCESS: wrong password.

  • IW_ERR_NODEVICE: the device is unknown or has been permanently disabled

  • IW_ERR_TIMEOUT: timeout since IWPwdUpdateStart

Online OTP

IWOnlineOtpStart

int IWOnlineOtpStart(IW* iw,int i)
CODE

Function description: starts the “online OTP generation” process

Parameters:

  • i (int) → the service index in the table of available services. For a standard configuration with one service, the service index is 0.

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is not activated or blocked or to be upgraded

  • IW_ERR_NODEVICE: the device is unknown or has been permanently disabled

  • IW_ERR_VERSION: version error, user must upgrade the device (see IWNewVersionAvailable above)

IWOnlineOtpFinalize

int IWOnlineOtpFinalize(IW* iw,int i,char* pin)
CODE

Function description: finalizes the “online OTP generation” process

Parameters:

  • i(int) → the service index in the table of available services. For a standard configuration with one service, the service index is 0.

  • pin (char*) → the user’s pin code

Returns: IWOnlineOtpFinalizeExt(i, pin, 0)

IWOtpAnswerOtp

char* IWOtpAnswerOtp(IW* iw)
CODE

Function description: retrieves a generated OTP after a process of online OTP generation (only if the IWOnlineOtpFinalize or IWOnlineOtpFinalizeExt call returns a response code “0”).

Returns: an OTP

IWOnlineOtpFinalizeExt

int IWOnlineOtpFinalizeExt(IW* iw, int i, char* pin, int keytype)
CODE

Function description: finalizes the “online OTP generation” process with biometric keys

Parameters:

  • i (int) → the service index in the table of available services. For a standard configuration with one service, the service index is 0.

  • pin (char*) → the user’s pin code

  • keytype (int) → the keytype ( 0= pincode , 1= biometric key)

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is not activated or blocked or to be upgraded

  • IW_ERR_ACCESS: wrong password.

  • IW_ERR_SYNCHROFAILED: the last step of the synchronization failed. Should propose to resynchronize.

  • IW_ERR_NODEVICE: the device is unknown or has been permanently disabled

  • IW_ERR_TIMEOUT: timeout since IWOnlineOtpStart

Offline OTP

IWOtpShouldSynchronize

int IWOtpShouldSynchronize(IW* iw, int serviceid)
CODE

Function description: checks if a synchronization process is required, before starting the process of Offline OTP generation

Parameters:

  • serviceid (int) → the inWebo service identifier

Returns: an error code

  • 0 : no synchronization required

  • 1 : synchronization required

IWOtpModeQuery

IWOtpModeQuery(IW* iw, int serviceid)
CODE

Function description: indicates whether the pin should be requested, after a otpShouldSynchronize call and before starting the process of Offline OTP generation.

Parameters:

  • serviceid (int) → the inWebo service identifier

Returns: an error code

  • 0 → No PIN required

  • 1 → the Pin is required

IWOtpGenerateMa

char* IWOtpGenerateMa(IW* iw, char* pin)
CODE

Function description: retrieves a generated OTP after a process of offline OTP generation (only if the IWOnlineOtpFinalize or IWOnlineOtpFinalizeExt call returns a response code “0”).

Parameters:

  • pin (char*) → the user’s pin code

Returns: an OTP

IWDisplayTime

int IWDisplayTime(IW* iw)
CODE

Function description: displays the remaining time before the OTP expiration (in seconds)

Returns: Otp.displayTime()

Push Notifications

IWSetDeviceOS

void IWSetDeviceOS(IW* iw, char *deviceos)
CODE

Function description: defines the device operating system.

Parameters:

  • deviceOS (char*) → the device’s OS

To use Firebase notification service you must change the device OS to "firebase" using IWSetDeviceOS("firebase").

IWPushRegistrationStart

int IWPushRegistrationStart(IW* iw)
CODE

Function description: starts the push registration process to allow inWebo to send push notifications to your application.

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is not activated or blocked or to be upgraded

  • IW_ERR_NODEVICE: the device is unknown or has been permanently disabled

IWPushRegistrationFinalize

int IWPushRegistrationFinalize(IW* iw, char *push_id)
CODE

Function description: finalizes the push registration process to allow inWebo to send push notifications to your application.

Parameters:

  • push_id (char*) → the push id of the device used for notification push service

Returns: an error code

  • IW_ERR_OK: no error

  • IW_ERR_NETWORK: network error

  • IW_ERR_FORBIDDEN: device is not activated or blocked or to be upgraded

  • IW_ERR_NODEVICE: the device is unknown or has been permanently disabled

  • IW_ERR_TIMEOUT: timeout since IWPushRegistrationStart

IWCheckPush

int IWCheckPush(IW* iw)
CODE

Function description: Checks if a push notification is available on inWebo server for the active instance of mAccess, and retrieves it. Typically this function can be called when starting the application.

Returns: an error code

  • 0 → a push is available

  • 999 → no pending push available or mobile push service may not be activated

IWPushAlias

char* IWPushAlias(IW* iw)
CODE

Function description: Gets the push session id, or alias, related to the retrieved push (if a IWCheckPush call returns a 0)

Returns: pushAlias (char*)

IWPushAction

public String PushAction()
CODE

Function description: gets the push action type of the push notification (authenticate or activate)

Returns: pushAction (char*)

IWPushContext

char* IWPushContext(IW* iw)
CODE

Function description: gets the push notification context information if there is one (authentication only)

Returns: pushContext (char*)

Sealing

IWOnlineSealStart

int IWOnlineSealStart(IW* iw, int i)
CODE

Function description: starts the “online seal generation” process

Parameters:

  • i (int) → the service index in the table of available services. For a standard configuration with one service, the service index is 0.

Returns: an error code

IWOnlineSealFinalize

int IWOnlineSealFinalize(IW* iw, int i, char* pin, char *sealdata)
CODE

Function description: finalizes the “online seal generation” process

Parameters:

  • i(int) → the service index in the table of available services. For a standard configuration with one service, the service index is 0.

  • pin (char*) → the user’s pin code

  • sealdata (char*) → the data to seal (it is highly recommended to hash the data)

Returns: IWOnlineSealFinalizeExt(i, pin, 0, sealdata)

IWOnlineSealFinalizeExt

int IWOnlineSealFinalizeExt(IW* iw, int i, char* pin, int keytype, char *sealdata)
CODE

Function description: finalizes the “online seal generation” process with biometric keys

Parameters:

  • i (int) → the service index in the table of available services. For a standard configuration with one service, the service index is 0.

  • pin (char*) → the user’s pin code

  • keytype (long) → the keytype ( 0= pincode , 1= biometric key)

  • sealdata (char*) → the data to seal (it is highly recommended to hash the data)

Returns: an error code

IWSealAnswerOtp

char* IWSealAnswerOtp(IW* iw)
CODE

Function description: retrieves a generated OTP after a process of seal generation (only if the IWOnlineSealFinalize or IWOnlineSealFinalizeExt call returns a response code “0”).

Returns: an OTP

IWSealShouldSynchronize

int IWSealShouldSynchronize(IW* iw,int serviceid)
CODE

Function description: indicates if synchronization should be proposed to the user, BEFORE offline sealing. (i.e. before calling IWSealModeQuery ()). This would signify that more than 3 generations are performed in less than 2 minutes for the same service.

Parameters:

  • serviceid (int) → the service identifier

Returns: IWOtpShouldSynchronize(serviceid)

  • 0 → no synchronization required

  • 1 → synchronization required

IWSealModeQuery

int IWSealModeQuery(IW* iw,int serviceid)
CODE

Function description: initializes the Offline Seal process indicating whether the pin should be requested

Parameters:

  • serviceid (int) → the service identifier

Returns: always returns 1 → pin is required

IWSealGenerate

char* IWSealGenerate(IW* iw,char* pin, char *sealdata)
CODE

Function description: generates the seal

Parameters:

  • pin (char*) → the user’s pin code

  • sealdata (char*) → the data to seal (it is highly recommended to hash the data)

Returns: the generated seal

Configuration

IWVersionGet

char* IWVersionGet(IW* iw)
CODE

Function description: gets the mAccess library version

Returns: the library version number IWLIBVERSION()

IWHostVersionSet

void IWHostVersionSet(IW* iw,char* version)
CODE

Function description: provides the host/application version number.

Parameters:

  • version (char*) → the host/application version number. In order to be compliant with inWebo convention, it needs to be formatted as: AppName-Version. Example: myApp-1.3.0

IWWsTimeoutSet

void IWWsTimeoutSet(IW* iw,int t)
CODE

Function description: defines the timeout value for the web service calls, in millisecond.

Parameters:

  • t (int) → the timeout value

IWWsServerSet

void IWWsServerSet(IW* iw,char* server)
CODE

Function description: defines the server value for the web service calls

Parameters:

IWLangSet

void IWSetLang(IW* iw,char* lang)
CODE

Function description: defines the application language.

Parameters:

  • 1(char*) → English

  • 2(char*) → French

IWMaccessSet

void IWMaccessSet(IW* iw,char* macid)
CODE

Function description: provides the mAccess ID associated to its service

Parameters:

  • macid (char*) → the mAccess identifier associated to the service (see the integration guide to know more about the mAccess ID)

Storage

IWStorageDataChanged

int IWStorageDataChanged(IW* iw)
CODE

Function description: indicates whether the stored data has changed. When true, the host should call IWStorageDataGet() and update the locally stored data.

Returns:

  • 0 → the stored data hasn’t changed

  • 1 → the stored data has changed

IWStorageDataGet

 char* IWStorageDataGet(IW* iw)
CODE

Function description: gets the data to be stored locally. This string contains the internal state of mAccess (keys, service description …). The host should not try to process this string: it should only store it locally.

Returns: The data to be stored (ASCII string)

IWStorageDataSet

int IWStorageDataSet(IW* iw,char *src)
CODE

Function description: provides the stored data to the library. This should be done only once, at initialization.

Parameters:

  • src (char*) → the location of the stored data

Returns: an error code

  • IW_ERR_OK → no error

  • IW_ERR_SN → syntax error

Information

IWPinMode

 int IWPinMode(IW* iw)
CODE

Function description: indicates the pin mode that should be used for the current process

Returns: pinmode

  • 0 → PINMODE_NONE

  • 1 → PINMODE_CURRENT

  • 2 → PINMODE_NEW

  • 8 → PINMODE_BIO

  • 9 → PINMODE_CURRENT | PINMODE_BIO

To know more, refer to “Pin Mode codes” table.

IWMajorVersionRequired

int IWMajorVersionRequired(IW* iw)
CODE

Function description: indicates whether a major version update of the mAccess library is required.

Returns:

  • 0 → no major version update is required

  • 1 → a major version update is available and therefore required

IWNewVersionAvailable

char* IWNewVersionAvailable(IW* iw)
CODE

Function description: indicates whether a new version of the host/application is available

Returns:

  • If no new version is available, it returns empty string.

  • If a new version is available, it returns the name of this new version. Use IWMajorVersionRequired() to know whether this new version is major or minor.

IWNewVersionURL

char* IWNewVersionURL(IW* iw)
CODE

Function description: gets the URL new version

Returns:

  • If no new version is available, it returns empty string.

  • If a new version is available, it returns the URL to get the new version

IWShouldAskForMinorUpdate

int IWShouldAskForMinorUpdate(IW* iw)
CODE

Function description: indicates whether a minor version update should be proposed to the user.

Returns: Returns 1 if a minor version update should be proposed to the user. After this function returns 1 once, it will always return 0.

IWIsActivated

int IWIsActivated(IW* iw)
CODE

Function description: indicates whether the application integrating mAccess library is activated, whether the account is activated with mAccess or not.

Returns:

  • 0 → the application is not activated

  • 1 → the application is activated

IWMustUpgrade

int IWMustUpgrade(IW* iw)
CODE

Function description: indicates whether the application must upgrade first (the local data is from an old version).

Returns:

  • 0 → the application is up to date

  • 1 → the application must upgrade

IWIsBlocked

int IWIsBlocked(IW* iw)
CODE

Function description: indicates whether the device is blocked. If yes, it has to be unlocked.

Returns:

  • 0 → the device is not blocked

  • 1 → the device is blocked

IWServiceNb

int IWServiceNb(IW* iw)
CODE

Function description: indicates the number of services

Returns: “1” which means that the application is linked to one service.

IWServiceName

char* IWServiceName(IW* iw,int i)
CODE

Function description: indicates the name of the inWebo service linked to the application

Parameters:

  • i (int) → the service index in the table of available services. For a standard configuration with one service, the service index is 0.

Returns: the service name

char* IWServiceLogo(IW* iw,int i)
CODE

Function description: indicates the URL of the service PNG logo.

Parameters:

  • i (int) → the service index in the table of available services. For a standard configuration with one service, the service index is 0.

Returns: URL of the service logo

IWServiceDisabled

int IWServiceDisabled(IW* iw,int i)
CODE

Function description: indicates whether the service is disabled or not.

Parameters:

  • i (int) → the service index in the table of available services. For a standard configuration with one service, the service index is 0.

Returns:

  • 0 → the service is not disabled

  • 1 → the service is disabled. When disabled, it may be displayed as grayed, and should not be accessible

Asynchronous functions

The result of the webservice calls will be handled by callback functions which are passed to the start and finalize functions.

See asynchronous functions

  • int IWActivationStartAsync(IW* iw,char* code, IWCALLBACK callback, void *user)

  • int IWActivationFinalizeAsync(IW* iw,char* code,char* pin,char* name, IWCALLBACK callback, void *user)

  • int IWResetStartAsync(IW* iw,char* code, IWCALLBACK callback, void *user)

  • int IWResetFinalizeAsync(IW* iw,char* code,char* pin, IWCALLBACK callback, void *user)

  • int IWUpgradeStartAsync(IW* iw, IWCALLBACK callback, void *user)

  • int IWUpgradeFinalizeAsync(IW* iw,char* pin,char* oldserial, IWCALLBACK callback, void *user)

  • int IWPwdUpdateStartAsync(IW* iw, IWCALLBACK callback, void *user)

  • int IWPwdUpdateFinalizeAsync(IW* iw,char* newpin,char* pin, IWCALLBACK callback, void *user)

  • int IWSynchronizeStartAsync(IW* iw, IWCALLBACK callback, void *user)

  • int IWSynchronizeFinalizeAsync(IW* iw,char* pin, IWCALLBACK callback, void *user)

  • int IWOnlineOtpStartAsync(IW* iw,int i, IWCALLBACK callback, void *user)

  • int IWOnlineOtpFinalizeAsync(IW* iw,int i,char* pin, IWCALLBACK callback, void *user)

  • int IWOnlineOtpFinalizeExtAsync(IW* iw, int i, char* pin, int keytype, IWCALLBACK callback, void *user)

  • int IWOnlineSealStartAsync(IW* iw, int i, IWCALLBACK callback, void *user)

  • int IWOnlineSealFinalizeAsync(IW* iw, int i, char* pin, char *sealdata, IWCALLBACK callback, void *user)

  • int IWOnlineSealFinalizeExtAsync(IW* iw, int i, char* pin, int keytype, char *sealdata, IWCALLBACK callback, void *user)

  • int IWSetBiokeyStartAsync(IW* iw, IWCALLBACK callback, void *user)

  • int IWSetBiokeyFinalizeAsync(IW* iw, char* biokey, char* pin, IWCALLBACK callback, void *user)

  • int IWUnsetBiokeysStartAsync(IW* iw, IWCALLBACK callback, void* user)

  • int IWUnsetBiokeysFinalizeAsync(IW* iw, char* pin, IWCALLBACK callback, void* user)

  • int IWPushRegistrationStartAsync(IW* iw, IWCALLBACK callback, void *user)

  • int IWPushRegistrationFinalizeAsync(IW* iw, char *push_id, IWCALLBACK callback, void *user)

  • int IWCheckPushAsync(IW* iw, IWCALLBACK callback, void *user)