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Callback Functions


globus_result_t globus_gsi_callback_get_X509_STORE_callback_data_index (int *index)


globus_result_t globus_gsi_callback_get_SSL_callback_data_index (int *index)


int globus_gsi_callback_X509_verify_cert (X509_STORE_CTX *context, void *arg)


int globus_gsi_callback_create_proxy_callback (int preverify_ok, X509_STORE_CTX *x509_context)


int globus_gsi_callback_handshake_callback (int preverify_ok, X509_STORE_CTX *x509_context)


int globus_gsi_callback_check_issued (X509_STORE_CTX *context, X509 *cert, X509 *issuer)

Functions that plug into various plug points in the OpenSSL path validation mechanism.

These functions add CRL checking, X509 Extension handling and proxy validation.

Typedef for a callback that may be registered for dealing with unhandled X.509 extension.

Retrieve or create the index for our callback data structure in the X509_STORE.

Parameters:

index Will contain the index upon return

Returns:

GLOBUS_SUCCESS unless an error occurred, in which case, a globus error object ID is returned

References GLOBUS_GSI_CALLBACK_ERROR_WITH_CALLBACK_DATA_INDEX.

Retrieve or create the index for our callback data structure in the SSL structure.

Parameters:

index Will contain the index upon return

Returns:

GLOBUS_SUCCESS unless an error occurred, in which case, a globus error object ID is returned

References GLOBUS_GSI_CALLBACK_ERROR_WITH_CALLBACK_DATA_INDEX.

This function wraps the OpenSSL certificate verification callback for the purpose of a replacing the standard issuer check with one that deals with proxy certificates. Should be used with SSL_CTX_set_cert_verify_callback()

Parameters:

context The X509_STORE_CTX for which to register the callback.
arg Arguments to the callback. Currently ignored.

Returns:

1 on success 0 on failure

References globus_gsi_callback_check_issued().

This function provides a path validation callback for validation outside of a SSL session. It should be used in X509_STORE_set_verify_cb_func().

Parameters:

preverify_ok Communicates the result of default validation steps performed by OpenSSL
x509_context The validation state object

Returns:

1 on success 0 on failure

References GLOBUS_GSI_CALLBACK_ERROR_VERIFY_CRED, and globus_gsi_callback_get_X509_STORE_callback_data_index().

This function provides a path validation callback for the validation part of establishing a SSL session. It handles proxy certificates, X509 Extensions and CRL checking. It should be used in SSL_CTX_set_verify().

Parameters:

preverify_ok Communicates the result of default validation steps performed by OpenSSL
x509_context The validation state object.

Returns:

1 on success 0 on failure

References GLOBUS_GSI_CALLBACK_ERROR_VERIFY_CRED, and globus_gsi_callback_get_SSL_callback_data_index().

This function wraps the OpenSSL X509_check_issued() call and catches the error caused by the fact that a proxy certificate issuer may not have to have the correct KeyUsage fields set.

Parameters:

context The validation state object.
cert The certificate to check
issuer The issuer certificate to check

Returns:

1 on success 0 on failure

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