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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* plugins/authdata/greet/greet_auth.c */
/*
* Copyright 2008 by the Massachusetts Institute of Technology.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
/*
*
* Sample authorization data plugin
*/
#include <string.h>
#include <errno.h>
#include <krb5/authdata_plugin.h>
typedef struct krb5_db_entry krb5_db_entry;
static krb5_error_code
greet_init(krb5_context ctx, void **blob)
{
*blob = "hello";
return 0;
}
static void
greet_fini(krb5_context ctx, void *blob)
{
}
static krb5_error_code
greet_authdata(krb5_context ctx, krb5_db_entry *client,
krb5_data *req_pkt,
krb5_kdc_req *request,
krb5_enc_tkt_part * enc_tkt_reply)
{
#define GREET_SIZE (20)
char *p;
krb5_authdata *a;
size_t count;
krb5_authdata **new_ad;
p = calloc(1, GREET_SIZE);
a = calloc(1, sizeof(*a));
if (p == NULL || a == NULL) {
free(p);
free(a);
return ENOMEM;
}
strncpy(p, "hello there", GREET_SIZE-1);
a->magic = KV5M_AUTHDATA;
a->ad_type = -42;
a->length = GREET_SIZE;
a->contents = (unsigned char *)p;
if (enc_tkt_reply->authorization_data == 0) {
count = 0;
} else {
for (count = 0; enc_tkt_reply->authorization_data[count] != 0; count++)
;
}
new_ad = realloc(enc_tkt_reply->authorization_data,
(count+2) * sizeof(krb5_authdata *));
if (new_ad == NULL) {
free(p);
free(a);
return ENOMEM;
}
enc_tkt_reply->authorization_data = new_ad;
new_ad[count] = a;
new_ad[count+1] = NULL;
return 0;
}
krb5plugin_authdata_ftable_v0 authdata_server_0 = {
"greet",
greet_init,
greet_fini,
greet_authdata,
};
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