Provided by: gss-man_1.0.2-1_all bug


       gss_acquire_cred - API function


       #include <gss.h>

       OM_uint32   gss_acquire_cred(OM_uint32  *  minor_status,  const  gss_name_t  desired_name,
       OM_uint32  time_req,  const  gss_OID_set   desired_mechs,   gss_cred_usage_t   cred_usage,
       gss_cred_id_t * output_cred_handle, gss_OID_set * actual_mechs, OM_uint32 * time_rec);


       OM_uint32 * minor_status
                   (integer, modify) Mechanism specific status code.

       const gss_name_t desired_name
                   (gss_name_t, read) Name of principal whose
                     credential should be acquired.

       OM_uint32 time_req
                   (Integer, read, optional) Number of seconds that
                     credentials should remain valid. Specify GSS_C_INDEFINITE to
                     request that the credentials have the maximum permitted lifetime.

       const gss_OID_set desired_mechs
                   (Set of Object IDs, read, optional) Set of
                     underlying security mechanisms that may be used.
                     GSS_C_NO_OID_SET may be used to obtain an implementation-specific

       gss_cred_usage_t cred_usage
                   (gss_cred_usage_t, read) GSS_C_BOTH - Credentials may
                     be used either to initiate or accept security contexts.
                     GSS_C_INITIATE - Credentials will only be used to initiate
                     security contexts.  GSS_C_ACCEPT - Credentials will only be used
                     to accept security contexts.

       gss_cred_id_t * output_cred_handle
                   (gss_cred_id_t, modify) The returned
                     credential handle.  Resources associated with this credential
                     handle must be released by the application after use with a call
                     to gss_release_cred().

       gss_OID_set * actual_mechs
                   (Set of Object IDs, modify, optional) The set of
                     mechanisms for which the credential is valid.  Storage associated
                     with the returned OID-set must be released by the application
                     after use with a call to gss_release_oid_set().  Specify NULL if
                     not required.

       OM_uint32 * time_rec
                   (Integer, modify, optional) Actual number of seconds for
                     which the returned credentials will remain valid.  If the
                     implementation does not support expiration of credentials, the
                     value GSS_C_INDEFINITE will be returned. Specify NULL if not


       Allows  an application to acquire a handle for a pre-existing credential by name.  GSS-API
       implementations must impose a local access-control policy on callers of  this  routine  to
       prevent  unauthorized  callers  from acquiring credentials to which they are not entitled.
       This routine is not intended to provide a "login to  the  network"  function,  as  such  a
       function  would  involve  the  creation  of new credentials rather than merely acquiring a
       handle to existing credentials.   Such  functions,  if  required,  should  be  defined  in
       implementation-specific extensions to the API.

       If  desired_name  is  GSS_C_NO_NAME, the call is interpreted as a request for a credential
       handle that will  invoke  default  behavior  when  passed  to  gss_init_sec_context()  (if
       cred_usage  is GSS_C_INITIATE or GSS_C_BOTH) or gss_accept_sec_context() (if cred_usage is

       Mechanisms should honor the desired_mechs parameter,  and  return  a  credential  that  is
       suitable  to  use  only  with  the requested mechanisms.  An exception to this is the case
       where one underlying credential element can be shared by multiple mechanisms; in this case
       it  is  permissible  for  an  implementation  to  indicate  all  mechanisms with which the
       credential element may be used.  If desired_mechs is an empty set, behavior is undefined.

       This routine is expected to be used primarily by context acceptors, since  implementations
       are  likely  to provide mechanism-specific ways of obtaining GSS-API initiator credentials
       from the system login  process.   Some  implementations  may  therefore  not  support  the
       acquisition  of GSS_C_INITIATE or GSS_C_BOTH credentials via gss_acquire_cred for any name
       other than GSS_C_NO_NAME, or a name produced by  applying  either  gss_inquire_cred  to  a
       valid credential, or gss_inquire_context to an active context.

       If  credential  acquisition is time-consuming for a mechanism, the mechanism may choose to
       delay   the   actual   acquisition   until   the   credential   is   required   (e.g.   by
       gss_init_sec_context  or  gss_accept_sec_context).  Such mechanism-specific implementation
       decisions should be invisible to the calling application; thus a call of  gss_inquire_cred
       immediately  following the call of gss_acquire_cred must return valid credential data, and
       may therefore incur the overhead of a deferred credential acquisition.


       `GSS_S_COMPLETE`: Successful completion.

       `GSS_S_BAD_MECH`: Unavailable mechanism requested.

       `GSS_S_BAD_NAMETYPE`: Type contained within desired_name parameter is not supported.

       `GSS_S_BAD_NAME`: Value supplied for desired_name parameter is ill formed.

       `GSS_S_CREDENTIALS_EXPIRED`: The credentials could  not  be  acquired  Because  they  have

       `GSS_S_NO_CRED`: No credentials were found for the specified name.


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       Copyright © 2003-2011 Simon Josefsson.
       Copying  and distribution of this file, with or without modification, are permitted in any
       medium without royalty provided the copyright notice and this notice are preserved.


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