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# sasl_authorize_t - The SASL authorization callback

## Synopsis

    #include <sasl/sasl.h>

    int sasl_authorize_t(void *context,
                        const char *requested_user, unsigned alen,
                        const char *auth_identity, unsigned alen,
                        const char *def_realm, unsigned urlen,
                        struct propctx *propctx)

## Description

sasl_authorize_t is used to check whether the authorized user auth_identity may act as the user requested_user. For example the user root may wish to authenticate with his credentials but act as the user mmercer (with all of mmercer’s rights not roots). A server application should be very careful, and probably err on the side of caution, when determining which users may proxy as whom.

## Return Value

SASL callback functions should return SASL return codes. See sasl.h for a complete list. `SASL_OK` indicates success.

## See Also

sasl(3), sasl_callbacks(3)