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Move most of contents of get_creds to new function get_kdc_cred, that

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always contacts the kdc and doesn't save in the cache. This is a hack.


git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@2414 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Johan Danielsson
1997-07-17 23:00:21 +00:00
parent f332bca6ac
commit 466c312a9e
1 changed files with 152 additions and 142 deletions
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294
lib/krb5/get_cred.c
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@@ -40,11 +40,6 @@
RCSID("$Id$");
/*
*
*/
static krb5_error_code
key_proc (krb5_context context,
@@ -57,148 +52,128 @@ key_proc (krb5_context context,
return 0;
}
krb5_error_code
krb5_get_credentials (krb5_context context,
krb5_flags options,
krb5_ccache ccache,
krb5_creds *in_creds,
krb5_creds **out_creds)
static krb5_error_code
make_pa_tgs_req(krb5_context context,
krb5_ccache id,
KDC_REQ_BODY *body,
PA_DATA *padata,
krb5_creds *creds)
{
unsigned char buf[1024];
size_t len;
krb5_data in_data;
krb5_error_code ret;
TGS_REQ a;
Authenticator auth;
krb5_data authenticator;
Checksum c;
AP_REQ ap;
encode_KDC_REQ_BODY(buf + sizeof(buf) - 1, sizeof(buf),
body, &len);
in_data.length = len;
in_data.data = buf + sizeof(buf) - len;
ret = krb5_mk_req_extended(context, NULL, 0, &in_data, creds,
&padata->padata_value);
if(ret)
return ret;
padata->padata_type = pa_tgs_req;
return 0;
}
krb5_error_code
krb5_get_kdc_cred(krb5_context context,
krb5_ccache id,
krb5_kdc_flags flags,
krb5_addresses *addresses,
Ticket *second_ticket,
krb5_creds *in_creds,
krb5_creds **out_creds
)
{
TGS_REQ req;
krb5_data enc;
krb5_data resp;
krb5_kdc_rep rep;
KRB_ERROR error;
krb5_data req, resp;
char buf[BUFSIZ];
int i;
unsigned char data[1024], buf2[1024];
krb5_error_code ret;
unsigned char buf[1024];
size_t len;
PA_DATA *foo;
krb5_kdc_flags flags;
/*
* Check if cred found in ccache
*/
*out_creds = malloc(sizeof(**out_creds));
memset(*out_creds, 0, sizeof(**out_creds));
ret = krb5_cc_retrieve_cred(context, ccache, 0, in_creds, *out_creds);
if (ret == 0)
return ret;
else if (ret != KRB5_CC_END) {
free(*out_creds);
return ret;
memset(&req, 0, sizeof(req));
req.pvno = 5;
req.msg_type = krb_tgs_req;
krb5_init_etype(context,
&req.req_body.etype.len,
&req.req_body.etype.val,
NULL);
req.req_body.addresses = addresses;
req.req_body.kdc_options = flags.b;
copy_Realm(&in_creds->server->realm, &req.req_body.realm);
req.req_body.sname = malloc(sizeof(*req.req_body.sname));
copy_PrincipalName(&in_creds->server->name, req.req_body.sname);
req.req_body.till = in_creds->times.endtime;
krb5_generate_random_block(&req.req_body.nonce,
sizeof(req.req_body.nonce));
if(second_ticket){
req.req_body.additional_tickets = malloc(sizeof(*req.req_body.additional_tickets));
req.req_body.additional_tickets->len = 1;
req.req_body.additional_tickets->val = malloc(sizeof(*req.req_body.additional_tickets->val));
copy_Ticket(second_ticket, req.req_body.additional_tickets->val);
}
/*
* Prepare Tgs_Req.
*/
memset(&a, 0, sizeof(a));
krb5_init_etype (context,
&a.req_body.etype.len,
&a.req_body.etype.val,
NULL);
a.req_body.addresses = malloc(sizeof(*a.req_body.addresses));
ret = krb5_get_all_client_addrs (a.req_body.addresses);
if (ret)
return ret;
a.pvno = 5;
a.msg_type = krb_tgs_req;
flags.i = options;
a.req_body.kdc_options = flags.b;
copy_Realm(&in_creds->server->realm, &a.req_body.realm);
a.req_body.sname = malloc(sizeof(*a.req_body.sname));
copy_PrincipalName(&in_creds->server->name, a.req_body.sname);
a.req_body.from = NULL;
a.req_body.till = in_creds->times.endtime;
a.req_body.rtime = NULL;
krb5_generate_random_block (&a.req_body.nonce, sizeof(a.req_body.nonce));
a.req_body.additional_tickets = NULL;
a.req_body.enc_authorization_data = NULL;
req.req_body.enc_authorization_data = NULL;
req.padata = malloc(sizeof(*req.padata));
req.padata->len = 1;
req.padata->val = malloc(sizeof(*req.padata->val));
{
krb5_data in_data;
unsigned char buf[1024];
krb5_auth_context ac = NULL;
size_t len;
krb5_creds tmp_cred;
foo = malloc (sizeof(*foo));
ret = encode_KDC_REQ_BODY(buf + sizeof(buf) - 1, sizeof(buf),
&a.req_body, &len);
in_data.length = len;
in_data.data = buf + sizeof(buf) - len;
tmp_cred.client = NULL;
ret = krb5_build_principal(context,
memset(&tmp_cred, 0, sizeof(tmp_cred));
ret = krb5_build_principal(context,
&tmp_cred.server,
strlen(a.req_body.realm),
a.req_body.realm,
strlen(req.req_body.realm),
req.req_body.realm,
"krbtgt",
a.req_body.realm,
req.req_body.realm,
NULL);
if (ret)
return ret;
ret = krb5_get_credentials (context,
0,
ccache,
&tmp_cred,
out_creds);
if (ret)
return ret;
ret = krb5_mk_req_extended(context,
&ac,
0,
&in_data,
*out_creds,
&foo->padata_value);
if(ret)
return ret;
foo->padata_type = pa_tgs_req;
ret = krb5_get_credentials(context,
0, /* CACHE_ONLY */
id,
&tmp_cred,
out_creds);
krb5_free_principal(context, tmp_cred.server);
if(ret)
return ret;
}
a.padata = malloc(sizeof(*a.padata));
a.padata->len = 1;
a.padata->val = foo;
/*
* Encode
*/
encode_TGS_REQ (buf + sizeof (buf) - 1, sizeof(buf), &a, &req.length);
req.data = buf + sizeof(buf) - req.length;
free_TGS_REQ (&a);
ret = make_pa_tgs_req(context, id, &req.req_body,
req.padata->val, *out_creds);
if(ret)
goto out;
encode_TGS_REQ (buf + sizeof (buf) - 1, sizeof(buf), &req, &enc.length);
enc.data = buf + sizeof(buf) - enc.length;
/*
* Send and receive
*/
ret = krb5_sendto_kdc (context, &req, &in_creds->server->realm, &resp);
if (ret) {
return ret;
}
switch(((unsigned char*)resp.data)[0] & 0x1f){
case krb_error:{
ret = krb5_sendto_kdc (context, &enc, &in_creds->server->realm, &resp);
if (ret)
goto out;
memset(&rep, 0, sizeof(rep));
if(decode_TGS_REP(resp.data, resp.length, &rep.part1, &len) == 0){
ret = extract_ticket(context, &rep, *out_creds,
&(*out_creds)->session,
NULL,
NULL,
NULL);
krb5_free_kdc_rep(context, &rep);
}else if(decode_KRB_ERROR(resp.data, resp.length, &error, &len) == 0){
#if 0
krb5_principal princ;
char *name;
ret = decode_KRB_ERROR(resp.data, resp.length, &error, &len);
if(ret) return ret;
principalname2krb5_principal(&princ, error.sname, error.realm);
krb5_unparse_name(context, princ, &name);
fprintf(stderr, "Error: %s ", name);
@@ -208,22 +183,57 @@ krb5_get_credentials (krb5_context context,
fprintf(stderr, "%s",
krb5_get_err_text(context, error.error_code));
fprintf(stderr, " (code %d)\n", error.error_code);
abort();
break;
}
case krb_tgs_rep:
ret = decode_TGS_REP(resp.data, resp.length, &rep.part1, &len);
if(ret) return ret;
ret = extract_ticket(context, &rep, *out_creds,
&(*out_creds)->session,
NULL,
NULL,
NULL);
if(ret)
return ret;
return krb5_cc_store_cred (context, ccache, *out_creds);
break;
default:
return KRB5KRB_AP_ERR_MSG_TYPE;
}
#endif
ret = error.error_code;
free_KRB_ERROR(&error);
}else
ret = KRB5KRB_AP_ERR_MSG_TYPE;
krb5_data_free(&resp);
out:
free_TGS_REQ(&req);
return ret;
}
krb5_error_code
krb5_get_credentials (krb5_context context,
krb5_flags options,
krb5_ccache ccache,
krb5_creds *in_creds,
krb5_creds **out_creds)
{
krb5_error_code ret;
krb5_kdc_flags flags;
krb5_addresses addresses;
/*
* Check if cred found in ccache
*/
*out_creds = malloc(sizeof(**out_creds));
memset(*out_creds, 0, sizeof(**out_creds));
ret = krb5_cc_retrieve_cred(context, ccache, 0, in_creds, *out_creds);
if (ret == 0)
return ret;
else if (ret != KRB5_CC_END) {
free(*out_creds);
return ret;
}
krb5_get_all_client_addrs(&addresses);
flags.i = options; /* XXX */
ret = krb5_get_kdc_cred(context,
ccache,
flags,
&addresses,
NULL,
in_creds,
out_creds);
krb5_free_addresses(context, &addresses);
if(ret)
return ret;
return krb5_cc_store_cred (context, ccache, *out_creds);
}