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/*
* lib/kadm/adm_kt_enc.c
*
* Copyright 1995 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* 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. 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.
*
*/
/*
* adm_kt_enc.c - Encode keytab entry according to protocol.
*/
#include "k5-int.h"
#include "adm.h"
#include "adm_proto.h"
/*
* krb5_adm_ktent_to_proto() - Convert a keytab entry into an external
* list of reply components.
*
* Successful callers must free the storage for complistp and complistp->data
* either manually or by using krb5_free_adm_data().
*/
krb5_error_code
krb5_adm_ktent_to_proto(kcontext, ktentp, ncompp, complistp)
krb5_context kcontext;
krb5_keytab_entry *ktentp;
krb5_int32 *ncompp;
krb5_data **complistp;
{
krb5_error_code kret;
krb5_data *clist;
krb5_int32 nents;
kret = ENOMEM;
nents = 0;
if (clist = (krb5_data *) malloc((size_t) KRB5_ADM_KT_NCOMPS *
sizeof(krb5_data))) {
memset((char *) clist, 0, ((size_t) KRB5_ADM_KT_NCOMPS *
sizeof(krb5_data)));
/*
* Fill in the principal field.
*/
if (kret = krb5_unparse_name(kcontext,
ktentp->principal,
&clist[KRB5_ADM_KT_PRINCIPAL].data))
goto done;
clist[KRB5_ADM_KT_PRINCIPAL].length =
strlen(clist[KRB5_ADM_KT_PRINCIPAL].data);
nents++;
/*
* Fill in timestamp.
*/
if (kret = krb5_timeofday(kcontext, &ktentp->timestamp))
goto done;
if (clist[KRB5_ADM_KT_TIMESTAMP].data =
(char *) malloc(sizeof(krb5_ui_4))) {
clist[KRB5_ADM_KT_TIMESTAMP].length = sizeof(krb5_ui_4);
clist[KRB5_ADM_KT_TIMESTAMP].data[0] =
(char) ((ktentp->timestamp >> 24) & 0xff);
clist[KRB5_ADM_KT_TIMESTAMP].data[1] =
(char) ((ktentp->timestamp >> 16) & 0xff);
clist[KRB5_ADM_KT_TIMESTAMP].data[2] =
(char) ((ktentp->timestamp >> 8) & 0xff);
clist[KRB5_ADM_KT_TIMESTAMP].data[3] =
(char) (ktentp->timestamp & 0xff);
nents++;
}
else {
kret = ENOMEM;
goto done;
}
/*
* Fill in vno.
*/
if (clist[KRB5_ADM_KT_VNO].data =
(char *) malloc(sizeof(krb5_ui_4))) {
clist[KRB5_ADM_KT_VNO].length = sizeof(krb5_ui_4);
clist[KRB5_ADM_KT_VNO].data[0] = (ktentp->vno >> 24) & 0xff;
clist[KRB5_ADM_KT_VNO].data[1] = (ktentp->vno >> 16) & 0xff;
clist[KRB5_ADM_KT_VNO].data[2] = (ktentp->vno >> 8) & 0xff;
clist[KRB5_ADM_KT_VNO].data[3] = ktentp->vno & 0xff;
nents++;
}
else {
kret = ENOMEM;
goto done;
}
/*
* Fill in key_keytype.
*/
if (clist[KRB5_ADM_KT_KEY_KEYTYPE].data =
(char *) malloc(sizeof(krb5_ui_4))) {
clist[KRB5_ADM_KT_KEY_KEYTYPE].length = sizeof(krb5_ui_4);
clist[KRB5_ADM_KT_KEY_KEYTYPE].data[0] =
(ktentp->key.keytype >> 24) & 0xff;
clist[KRB5_ADM_KT_KEY_KEYTYPE].data[1] =
(ktentp->key.keytype >> 16) & 0xff;
clist[KRB5_ADM_KT_KEY_KEYTYPE].data[2] =
(ktentp->key.keytype >> 8) & 0xff;
clist[KRB5_ADM_KT_KEY_KEYTYPE].data[3] =
ktentp->key.keytype & 0xff;
nents++;
}
else {
kret = ENOMEM;
goto done;
}
/*
* Fill in key_etype.
*/
if (clist[KRB5_ADM_KT_KEY_ETYPE].data =
(char *) malloc(sizeof(krb5_ui_4))) {
clist[KRB5_ADM_KT_KEY_ETYPE].length = sizeof(krb5_ui_4);
clist[KRB5_ADM_KT_KEY_ETYPE].data[0] =
(ktentp->key.etype >> 24) & 0xff;
clist[KRB5_ADM_KT_KEY_ETYPE].data[1] =
(ktentp->key.etype >> 16) & 0xff;
clist[KRB5_ADM_KT_KEY_ETYPE].data[2] =
(ktentp->key.etype >> 8) & 0xff;
clist[KRB5_ADM_KT_KEY_ETYPE].data[3] =
ktentp->key.etype & 0xff;
nents++;
}
else {
kret = ENOMEM;
goto done;
}
/*
* Fill in key_key.
*/
if (clist[KRB5_ADM_KT_KEY_KEY].data =
(char *) malloc((size_t) ktentp->key.length)) {
memcpy(clist[KRB5_ADM_KT_KEY_KEY].data,
ktentp->key.contents,
(size_t) ktentp->key.length);
clist[KRB5_ADM_KT_KEY_KEY].length = ktentp->key.length;
nents++;
kret = 0;
}
else
kret = ENOMEM;
}
done:
if (kret) {
if (clist) {
int i;
for (i=0; i<KRB5_ADM_KT_NCOMPS; i++) {
if (clist[i].data) {
memset(clist[i].data, 0, (size_t) clist[i].length);
krb5_xfree(clist[i].data);
}
}
krb5_xfree(clist);
}
clist = (krb5_data *) NULL;
nents = 0;
}
*complistp = clist;
*ncompp = nents;
return(kret);
}
|
