1 /*
2  * lib/krb5/krb/copy_data.c
3  *
4  * Copyright 1990,1991 by the Massachusetts Institute of Technology.
5  * All Rights Reserved.
6  *
7  * Export of this software from the United States of America may
8  *   require a specific license from the United States Government.
9  *   It is the responsibility of any person or organization contemplating
10  *   export to obtain such a license before exporting.
11  *
12  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
13  * distribute this software and its documentation for any purpose and
14  * without fee is hereby granted, provided that the above copyright
15  * notice appear in all copies and that both that copyright notice and
16  * this permission notice appear in supporting documentation, and that
17  * the name of M.I.T. not be used in advertising or publicity pertaining
18  * to distribution of the software without specific, written prior
19  * permission.  Furthermore if you modify this software you must label
20  * your software as modified software and not distribute it in such a
21  * fashion that it might be confused with the original M.I.T. software.
22  * M.I.T. makes no representations about the suitability of
23  * this software for any purpose.  It is provided "as is" without express
24  * or implied warranty.
25  *
26  *
27  * krb5_copy_data()
28  */
29 
30 #include "k5-int.h"
31 
32 /*
33  * Copy a data structure, with fresh allocation.
34  */
35 /*ARGSUSED*/
36 krb5_error_code KRB5_CALLCONV
krb5_copy_data(krb5_context context,const krb5_data * indata,krb5_data ** outdata)37 krb5_copy_data(krb5_context context, const krb5_data *indata, krb5_data **outdata)
38 {
39     krb5_data *tempdata;
40 
41     if (!indata) {
42 	*outdata = 0;
43 	return 0;
44     }
45 
46     if (!(tempdata = (krb5_data *)malloc(sizeof(*tempdata))))
47 	return ENOMEM;
48 
49     tempdata->length = indata->length;
50     if (tempdata->length) {
51 	if (!(tempdata->data = malloc(tempdata->length))) {
52 	    krb5_xfree(tempdata);
53 	    return ENOMEM;
54 	}
55 	memcpy((char *)tempdata->data, (char *)indata->data, tempdata->length);
56     } else
57 	tempdata->data = 0;
58     tempdata->magic = KV5M_DATA;
59     *outdata = tempdata;
60     return 0;
61 }
62 
63 krb5_error_code
krb5int_copy_data_contents(krb5_context context,const krb5_data * indata,krb5_data * outdata)64 krb5int_copy_data_contents(krb5_context context, const krb5_data *indata, krb5_data *outdata)
65 {
66     if (!indata) {
67 	return EINVAL;
68     }
69 
70     outdata->length = indata->length;
71     if (outdata->length) {
72 	if (!(outdata->data = malloc(outdata->length))) {
73 	    return ENOMEM;
74 	}
75 	memcpy((char *)outdata->data, (char *)indata->data, outdata->length);
76     } else
77 	outdata->data = 0;
78     outdata->magic = KV5M_DATA;
79 
80     return 0;
81 }
82