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kdc: use rep/et/ek fields in astgs_request_t

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Use rep/et/ek fields in astgs_request_t that were previously present but not
globally used.
This commit is contained in:
Luke Howard
2021-12-23 19:45:32 +11:00
committed by Nico Williams
parent e3a5169862
commit 805ea5e0a0
2 changed files with 113 additions and 115 deletions
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173
kdc/krb5tgs.c
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@@ -606,27 +606,23 @@ tgs_make_reply(astgs_request_t r,
KDC_REQ_BODY *b = &r->req.req_body;
const char **e_text = &r->e_text;
krb5_data *reply = r->reply;
KDC_REP rep;
EncKDCRepPart ek;
EncTicketPart et;
KDC_REP *rep = &r->rep;
EncTicketPart *et = &r->et;
EncKDCRepPart *ek = &r->ek;
KDCOptions f = b->kdc_options;
krb5_error_code ret;
int is_weak = 0;
memset(&rep, 0, sizeof(rep));
memset(&et, 0, sizeof(et));
memset(&ek, 0, sizeof(ek));
rep->pvno = 5;
rep->msg_type = krb_tgs_rep;
rep.pvno = 5;
rep.msg_type = krb_tgs_rep;
et.authtime = tgt->authtime;
et->authtime = tgt->authtime;
_kdc_fix_time(&b->till);
et.endtime = min(tgt->endtime, *b->till);
ALLOC(et.starttime);
*et.starttime = kdc_time;
et->endtime = min(tgt->endtime, *b->till);
ALLOC(et->starttime);
*et->starttime = kdc_time;
ret = check_tgs_flags(r, b, tgt_name, tgt, &et);
ret = check_tgs_flags(r, b, tgt_name, tgt, et);
if(ret)
goto out;
@@ -656,18 +652,18 @@ tgs_make_reply(astgs_request_t r,
!((GLOBAL_ALLOW_PER_PRINCIPAL &&
PRINCIPAL_ALLOW_DISABLE_TRANSITED_CHECK(server)) ||
GLOBAL_ALLOW_DISABLE_TRANSITED_CHECK),
&tgt->transited, &et,
&tgt->transited, et,
krb5_principal_get_realm(r->context, client_principal),
krb5_principal_get_realm(r->context, server->entry.principal),
tgt_realm);
if(ret)
goto out;
ret = copy_Realm(&server_principal->realm, &rep.ticket.realm);
ret = copy_Realm(&server_principal->realm, &rep->ticket.realm);
if (ret)
goto out;
_krb5_principal2principalname(&rep.ticket.sname, server_principal);
ret = copy_Realm(&tgt_name->realm, &rep.crealm);
_krb5_principal2principalname(&rep->ticket.sname, server_principal);
ret = copy_Realm(&tgt_name->realm, &rep->crealm);
if (ret)
goto out;
@@ -677,86 +673,86 @@ tgs_make_reply(astgs_request_t r,
* whilst the TGT flag check below is superfluous, it is included in
* order to follow the specification to its letter.
*/
if (et.flags.anonymous && !tgt->flags.anonymous)
_kdc_make_anonymous_principalname(&rep.cname);
if (et->flags.anonymous && !tgt->flags.anonymous)
_kdc_make_anonymous_principalname(&rep->cname);
else
ret = copy_PrincipalName(&tgt_name->name, &rep.cname);
ret = copy_PrincipalName(&tgt_name->name, &rep->cname);
if (ret)
goto out;
rep.ticket.tkt_vno = 5;
rep->ticket.tkt_vno = 5;
ek.caddr = et.caddr;
ek->caddr = et->caddr;
{
time_t life;
life = et.endtime - *et.starttime;
life = et->endtime - *et->starttime;
if(client && client->entry.max_life)
life = min(life, *client->entry.max_life);
if(server->entry.max_life)
life = min(life, *server->entry.max_life);
et.endtime = *et.starttime + life;
et->endtime = *et->starttime + life;
}
if(f.renewable_ok && tgt->flags.renewable &&
et.renew_till == NULL && et.endtime < *b->till &&
et->renew_till == NULL && et->endtime < *b->till &&
tgt->renew_till != NULL)
{
et.flags.renewable = 1;
ALLOC(et.renew_till);
*et.renew_till = *b->till;
et->flags.renewable = 1;
ALLOC(et->renew_till);
*et->renew_till = *b->till;
}
if(et.renew_till){
if(et->renew_till){
time_t renew;
renew = *et.renew_till - *et.starttime;
renew = *et->renew_till - *et->starttime;
if(client && client->entry.max_renew)
renew = min(renew, *client->entry.max_renew);
if(server->entry.max_renew)
renew = min(renew, *server->entry.max_renew);
*et.renew_till = *et.starttime + renew;
*et->renew_till = *et->starttime + renew;
}
if(et.renew_till){
*et.renew_till = min(*et.renew_till, *tgt->renew_till);
*et.starttime = min(*et.starttime, *et.renew_till);
et.endtime = min(et.endtime, *et.renew_till);
if(et->renew_till){
*et->renew_till = min(*et->renew_till, *tgt->renew_till);
*et->starttime = min(*et->starttime, *et->renew_till);
et->endtime = min(et->endtime, *et->renew_till);
}
*et.starttime = min(*et.starttime, et.endtime);
*et->starttime = min(*et->starttime, et->endtime);
if(*et.starttime == et.endtime){
if(*et->starttime == et->endtime){
ret = KRB5KDC_ERR_NEVER_VALID;
goto out;
}
if(et.renew_till && et.endtime == *et.renew_till){
free(et.renew_till);
et.renew_till = NULL;
et.flags.renewable = 0;
if(et->renew_till && et->endtime == *et->renew_till){
free(et->renew_till);
et->renew_till = NULL;
et->flags.renewable = 0;
}
et.flags.pre_authent = tgt->flags.pre_authent;
et.flags.hw_authent = tgt->flags.hw_authent;
et.flags.ok_as_delegate = server->entry.flags.ok_as_delegate;
et->flags.pre_authent = tgt->flags.pre_authent;
et->flags.hw_authent = tgt->flags.hw_authent;
et->flags.ok_as_delegate = server->entry.flags.ok_as_delegate;
/* See MS-KILE 3.3.5.1 */
if (!server->entry.flags.forwardable)
et.flags.forwardable = 0;
et->flags.forwardable = 0;
if (!server->entry.flags.proxiable)
et.flags.proxiable = 0;
et->flags.proxiable = 0;
if (auth_data) {
unsigned int i = 0;
/* XXX check authdata */
if (et.authorization_data == NULL) {
et.authorization_data = calloc(1, sizeof(*et.authorization_data));
if (et.authorization_data == NULL) {
if (et->authorization_data == NULL) {
et->authorization_data = calloc(1, sizeof(*et->authorization_data));
if (et->authorization_data == NULL) {
ret = ENOMEM;
krb5_set_error_message(r->context, ret, "malloc: out of memory");
goto out;
}
}
for(i = 0; i < auth_data->len ; i++) {
ret = add_AuthorizationData(et.authorization_data, &auth_data->val[i]);
ret = add_AuthorizationData(et->authorization_data, &auth_data->val[i]);
if (ret) {
krb5_set_error_message(r->context, ret, "malloc: out of memory");
goto out;
@@ -764,39 +760,39 @@ tgs_make_reply(astgs_request_t r,
}
}
ret = krb5_copy_keyblock_contents(r->context, sessionkey, &et.key);
ret = krb5_copy_keyblock_contents(r->context, sessionkey, &et->key);
if (ret)
goto out;
et.crealm = rep.crealm;
et.cname = rep.cname;
et->crealm = rep->crealm;
et->cname = rep->cname;
ek.key = et.key;
ek->key = et->key;
/* MIT must have at least one last_req */
ek.last_req.val = calloc(1, sizeof(*ek.last_req.val));
if (ek.last_req.val == NULL) {
ek->last_req.val = calloc(1, sizeof(*ek->last_req.val));
if (ek->last_req.val == NULL) {
ret = ENOMEM;
goto out;
}
ek.last_req.len = 1; /* set after alloc to avoid null deref on cleanup */
ek.nonce = b->nonce;
ek.flags = et.flags;
ek.authtime = et.authtime;
ek.starttime = et.starttime;
ek.endtime = et.endtime;
ek.renew_till = et.renew_till;
ek.srealm = rep.ticket.realm;
ek.sname = rep.ticket.sname;
ek->last_req.len = 1; /* set after alloc to avoid null deref on cleanup */
ek->nonce = b->nonce;
ek->flags = et->flags;
ek->authtime = et->authtime;
ek->starttime = et->starttime;
ek->endtime = et->endtime;
ek->renew_till = et->renew_till;
ek->srealm = rep->ticket.realm;
ek->sname = rep->ticket.sname;
_kdc_log_timestamp(r, "TGS-REQ", et.authtime, et.starttime,
et.endtime, et.renew_till);
_kdc_log_timestamp(r, "TGS-REQ", et->authtime, et->starttime,
et->endtime, et->renew_till);
if (enc_pa_data->len) {
rep.padata = calloc(1, sizeof(*rep.padata));
if (rep.padata == NULL) {
rep->padata = calloc(1, sizeof(*rep->padata));
if (rep->padata == NULL) {
ret = ENOMEM;
goto out;
}
ret = copy_METHOD_DATA(enc_pa_data, rep.padata);
ret = copy_METHOD_DATA(enc_pa_data, rep->padata);
if (ret)
goto out;
}
@@ -823,7 +819,7 @@ tgs_make_reply(astgs_request_t r,
* restrictive authorization data. Policy for unknown authorization types
* is implementation dependent.
*/
if (r->pac && !et.flags.anonymous) {
if (r->pac && !et->flags.anonymous) {
_kdc_audit_addkv((kdc_request_t)r, 0, "pac_attributes", "%lx",
(long)r->pac_attributes);
@@ -838,7 +834,7 @@ tgs_make_reply(astgs_request_t r,
ret = _krb5_kdc_pac_sign_ticket(r->context, r->pac, tgt_name, serverkey,
krbtgtkey, rodc_id, NULL, r->client_princ,
add_ticket_sig, &et,
add_ticket_sig, et,
is_tgs ? &r->pac_attributes : NULL);
if (ret)
goto out;
@@ -856,8 +852,7 @@ tgs_make_reply(astgs_request_t r,
etype list, even if we don't want a session key with
DES3? */
ret = _kdc_encode_reply(r->context, r->config, r, b->nonce,
&rep, &et, &ek, serverkey->keytype,
kvno,
serverkey->keytype, kvno,
serverkey, 0, r->rk_is_subkey,
e_text, reply);
if (is_weak)
@@ -866,19 +861,6 @@ tgs_make_reply(astgs_request_t r,
_log_astgs_req(r, serverkey->keytype);
out:
free_TGS_REP(&rep);
free_TransitedEncoding(&et.transited);
if(et.starttime)
free(et.starttime);
if(et.renew_till)
free(et.renew_till);
if(et.authorization_data) {
free_AuthorizationData(et.authorization_data);
free(et.authorization_data);
}
free_LastReq(&ek.last_req);
memset(et.key.keyvalue.data, 0, et.key.keyvalue.length);
free_EncryptionKey(&et.key);
return ret;
}
@@ -2622,6 +2604,21 @@ out:
free(csec);
free(cusec);
free_TGS_REP(&r->rep);
free_TransitedEncoding(&r->et.transited);
free(r->et.starttime);
free(r->et.renew_till);
if(r->et.authorization_data) {
free_AuthorizationData(r->et.authorization_data);
free(r->et.authorization_data);
}
free_LastReq(&r->ek.last_req);
if (r->et.key.keyvalue.data) {
memset_s(r->et.key.keyvalue.data, 0, r->et.key.keyvalue.length,
r->et.key.keyvalue.length);
}
free_EncryptionKey(&r->et.key);
if (r->client_princ) {
krb5_free_principal(r->context, r->client_princ);
r->client_princ = NULL;