Detailed Description

Functions that plug into various plug points in the OpenSSL path validation mechanism. These functions add CRL checking, X509 Extension handling and proxy validation.

Function Documentation

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

OpenSSL X509_check_issued() wrapper. 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

int globus_gsi_callback_create_proxy_callback (intpreverify_ok, X509_STORE_CTX *x509_context)

Independent path validation callback. 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

globus_result_t globus_gsi_callback_get_SSL_callback_data_index (int *index)

Get callback data index from SSL structure. 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

globus_result_t globus_gsi_callback_get_X509_STORE_callback_data_index (int *index)

Get callback data index from X509_STORE. 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

int globus_gsi_callback_handshake_callback (intpreverify_ok, X509_STORE_CTX *x509_context)

SSL path validation callback. 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

int globus_gsi_callback_X509_verify_cert (X509_STORE_CTX *context, void *arg)

Certificate verify wrapper. 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

Author

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