NAME

       globus_gsi_callback_functions - Callback Functions

   Functions
       globus_result_t globus_gsi_callback_get_X509_STORE_callback_data_index (int *index)
           Get callback data index from X509_STORE.
       globus_result_t globus_gsi_callback_get_SSL_callback_data_index (int *index)
           Get callback data index from SSL structure.
       int globus_gsi_callback_X509_verify_cert (X509_STORE_CTX *context, void *arg)
           Certificate verify wrapper.
       int globus_gsi_callback_create_proxy_callback (int preverify_ok, X509_STORE_CTX
           *x509_context)
           Independent path validation callback.
       int globus_gsi_callback_handshake_callback (int preverify_ok, X509_STORE_CTX
           *x509_context)
           SSL path validation callback.
       int globus_gsi_callback_check_issued (X509_STORE_CTX *context, X509 *cert, X509 *issuer)
           OpenSSL X509_check_issued() wrapper.

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 (int preverify_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 (int preverify_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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