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      1 #pragma ident	"%Z%%M%	%I%	%E% SMI"
      2 
      3 /*
      4  * lib/gssapi/krb5/export_name.c
      5  *
      6  * Copyright 1997 by the Massachusetts Institute of Technology.
      7  * All Rights Reserved.
      8  *
      9  * Export of this software from the United States of America may
     10  *   require a specific license from the United States Government.
     11  *   It is the responsibility of any person or organization contemplating
     12  *   export to obtain such a license before exporting.
     13  *
     14  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
     15  * distribute this software and its documentation for any purpose and
     16  * without fee is hereby granted, provided that the above copyright
     17  * notice appear in all copies and that both that copyright notice and
     18  * this permission notice appear in supporting documentation, and that
     19  * the name of M.I.T. not be used in advertising or publicity pertaining
     20  * to distribution of the software without specific, written prior
     21  * permission.  Furthermore if you modify this software you must label
     22  * your software as modified software and not distribute it in such a
     23  * fashion that it might be confused with the original M.I.T. software.
     24  * M.I.T. makes no representations about the suitability of
     25  * this software for any purpose.  It is provided "as is" without express
     26  * or implied warranty.
     27  *
     28  */
     29 
     30 #include "gssapiP_krb5.h"
     31 
     32 OM_uint32 krb5_gss_export_name(OM_uint32  *minor_status,
     33 			       const gss_name_t input_name,
     34 			       gss_buffer_t exported_name)
     35 {
     36 	krb5_context context;
     37 	krb5_error_code code;
     38 	size_t length;
     39 	char *str, *cp;
     40 
     41 	if (minor_status)
     42 		*minor_status = 0;
     43 
     44 	code = krb5_gss_init_context(&context);
     45 	if (code) {
     46 	    if (minor_status)
     47 		*minor_status = code;
     48 	    return GSS_S_FAILURE;
     49 	}
     50 
     51 	exported_name->length = 0;
     52 	exported_name->value = NULL;
     53 
     54 	if (! kg_validate_name(input_name)) {
     55 		if (minor_status)
     56 			*minor_status = (OM_uint32) G_VALIDATE_FAILED;
     57 		krb5_free_context(context);
     58 		return(GSS_S_CALL_BAD_STRUCTURE|GSS_S_BAD_NAME);
     59 	}
     60 
     61 	if ((code = krb5_unparse_name(context, (krb5_principal) input_name,
     62 				      &str))) {
     63 		if (minor_status)
     64 			*minor_status = code;
     65 		krb5_free_context(context);
     66 		return(GSS_S_FAILURE);
     67 	}
     68 
     69 	krb5_free_context(context);
     70 	length = strlen(str);
     71 	exported_name->length = 10 + length + gss_mech_krb5->length;
     72 	exported_name->value = malloc(exported_name->length);
     73 	if (!exported_name->value) {
     74 		free(str);
     75 		if (minor_status)
     76 			*minor_status = ENOMEM;
     77 		return(GSS_S_FAILURE);
     78 	}
     79 	cp = exported_name->value;
     80 
     81 	/* Note: we assume the OID will be less than 128 bytes... */
     82 	*cp++ = 0x04; *cp++ = 0x01;
     83 	*cp++ = (gss_mech_krb5->length+2) >> 8;
     84 	*cp++ = (gss_mech_krb5->length+2) & 0xFF;
     85 	*cp++ = 0x06;
     86 	*cp++ = (gss_mech_krb5->length) & 0xFF;
     87 	memcpy(cp, gss_mech_krb5->elements, gss_mech_krb5->length);
     88 	cp += gss_mech_krb5->length;
     89 	*cp++ = length >> 24;
     90 	*cp++ = length >> 16;
     91 	*cp++ = length >> 8;
     92 	*cp++ = length & 0xFF;
     93 	memcpy(cp, str, length);
     94 
     95 	free(str);
     96 
     97 	return(GSS_S_COMPLETE);
     98 }
     99