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      1 /*
      2  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
      3  * Use is subject to license terms.
      4  */
      5 
      6 
      7 /*
      8  * lib/gssapi/krb5/set_ccache.c
      9  *
     10  * Copyright 1999, 2003 by the Massachusetts Institute of Technology.
     11  * All Rights Reserved.
     12  *
     13  * Export of this software from the United States of America may
     14  *   require a specific license from the United States Government.
     15  *   It is the responsibility of any person or organization contemplating
     16  *   export to obtain such a license before exporting.
     17  *
     18  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
     19  * distribute this software and its documentation for any purpose and
     20  * without fee is hereby granted, provided that the above copyright
     21  * notice appear in all copies and that both that copyright notice and
     22  * this permission notice appear in supporting documentation, and that
     23  * the name of M.I.T. not be used in advertising or publicity pertaining
     24  * to distribution of the software without specific, written prior
     25  * permission.  Furthermore if you modify this software you must label
     26  * your software as modified software and not distribute it in such a
     27  * fashion that it might be confused with the original M.I.T. software.
     28  * M.I.T. makes no representations about the suitability of
     29  * this software for any purpose.  It is provided "as is" without express
     30  * or implied warranty.
     31  *
     32  * Set ccache name used by gssapi, and optionally obtain old ccache
     33  * name.  Caller should not free returned name.
     34  */
     35 
     36 #include <string.h>
     37 #include "gssapiP_krb5.h"
     38 #include "gss_libinit.h"
     39 
     40 OM_uint32 KRB5_CALLCONV
     41 gss_krb5_ccache_name(minor_status, name, out_name)
     42 	OM_uint32 *minor_status;
     43 	const char *name;
     44 	const char **out_name;
     45 {
     46     char *old_name = NULL;
     47     OM_uint32 err = 0;
     48     OM_uint32 minor = 0;
     49     char *gss_out_name;
     50 
     51     err = gssint_initialize_library();
     52     if (err) {
     53 	*minor_status = err;
     54 	return GSS_S_FAILURE;
     55     }
     56 
     57     gss_out_name = k5_getspecific(K5_KEY_GSS_KRB5_SET_CCACHE_OLD_NAME);
     58 
     59     if (out_name) {
     60         const char *tmp_name = NULL;
     61 
     62         if (!err) {
     63             kg_get_ccache_name (&err, &tmp_name);
     64         }
     65         if (!err) {
     66             old_name = gss_out_name;
     67             /* Solaris Kerberos */
     68             gss_out_name = (char *)tmp_name;
     69         }
     70     }
     71     /* If out_name was NULL, we keep the same gss_out_name value, and
     72        don't free up any storage (leave old_name NULL).  */
     73 
     74     if (!err)
     75         kg_set_ccache_name (&err, name);
     76 
     77     minor = k5_setspecific(K5_KEY_GSS_KRB5_SET_CCACHE_OLD_NAME, gss_out_name);
     78     if (minor) {
     79 	/* Um.  Now what?  */
     80 	if (err == 0) {
     81 	    err = minor;
     82 	}
     83 	free(gss_out_name);
     84 	gss_out_name = NULL;
     85     }
     86 
     87     if (!err) {
     88         if (out_name) {
     89             *out_name = gss_out_name;
     90         }
     91     }
     92 
     93     if (old_name != NULL) {
     94         free (old_name);
     95     }
     96 
     97     *minor_status = err;
     98     return (*minor_status == 0) ? GSS_S_COMPLETE : GSS_S_FAILURE;
     99 }
    100