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-rw-r--r--source4/auth/kerberos/kerberos.c68
1 files changed, 41 insertions, 27 deletions
diff --git a/source4/auth/kerberos/kerberos.c b/source4/auth/kerberos/kerberos.c
index 8824d748d2..5e38d878be 100644
--- a/source4/auth/kerberos/kerberos.c
+++ b/source4/auth/kerberos/kerberos.c
@@ -85,20 +85,24 @@
*/
krb5_error_code kerberos_kinit_password_cc(krb5_context ctx, krb5_ccache cc,
- krb5_principal principal, const char *password,
- krb5_principal impersonate_principal, const char *target_service,
+ krb5_principal init_principal,
+ const char *init_password,
+ krb5_principal impersonate_principal,
+ const char *target_service,
krb5_get_init_creds_opt *krb_options,
time_t *expire_time, time_t *kdc_time)
{
krb5_error_code code = 0;
- krb5_creds my_creds;
- krb5_creds *impersonate_creds;
+ krb5_creds init_creds;
krb5_get_creds_opt options;
+ const char *self_service = target_service;
/* If we are not impersonating, then get this ticket for the
* target service, otherwise a krbtgt, and get the next ticket
* for the target */
- if ((code = krb5_get_init_creds_password(ctx, &my_creds, principal, password,
+ if ((code = krb5_get_init_creds_password(ctx, &init_creds,
+ init_principal,
+ init_password,
NULL, NULL,
0,
impersonate_principal ? NULL : target_service,
@@ -106,59 +110,69 @@
return code;
}
- if ((code = krb5_cc_initialize(ctx, cc, principal))) {
- krb5_free_cred_contents(ctx, &my_creds);
+ if ((code = krb5_cc_initialize(ctx, cc, init_principal))) {
+ krb5_free_cred_contents(ctx, &init_creds);
return code;
}
- if ((code = krb5_cc_store_cred(ctx, cc, &my_creds))) {
- krb5_free_cred_contents(ctx, &my_creds);
+ if ((code = krb5_cc_store_cred(ctx, cc, &init_creds))) {
+ krb5_free_cred_contents(ctx, &init_creds);
return code;
}
if (expire_time) {
- *expire_time = (time_t) my_creds.times.endtime;
+ *expire_time = (time_t) init_creds.times.endtime;
}
if (kdc_time) {
- *kdc_time = (time_t) my_creds.times.starttime;
+ *kdc_time = (time_t) init_creds.times.starttime;
}
- krb5_free_cred_contents(ctx, &my_creds);
-
+ krb5_free_cred_contents(ctx, &init_creds);
+
if (code == 0 && impersonate_principal) {
- krb5_principal target_princ;
- if ((code = krb5_get_creds_opt_alloc(ctx, &options))) {
+ krb5_creds *s4u2self_creds;
+ krb5_principal self_princ;
+ const char *self_realm;
+
+ /*
+ * For S4U2Self we need our own service principal,
+ * which belongs to our own realm (available on
+ * our client principal.
+ */
+ self_realm = krb5_principal_get_realm(ctx, init_principal);
+
+ if ((code = krb5_parse_name(ctx, self_service, &self_princ))) {
return code;
}
- if ((code = krb5_get_creds_opt_set_impersonate(ctx, options, impersonate_principal))) {
- krb5_get_creds_opt_free(ctx, options);
+ if ((code = krb5_principal_set_realm(ctx, self_princ, self_realm))) {
+ krb5_free_principal(ctx, self_princ);
return code;
}
- if ((code = krb5_parse_name(ctx, target_service, &target_princ))) {
- krb5_get_creds_opt_free(ctx, options);
+ if ((code = krb5_get_creds_opt_alloc(ctx, &options))) {
+ krb5_free_principal(ctx, self_princ);
return code;
}
- if ((code = krb5_principal_set_realm(ctx, target_princ, krb5_principal_get_realm(ctx, principal)))) {
+ if ((code = krb5_get_creds_opt_set_impersonate(ctx, options, impersonate_principal))) {
krb5_get_creds_opt_free(ctx, options);
- krb5_free_principal(ctx, target_princ);
+ krb5_free_principal(ctx, self_princ);
return code;
}
- if ((code = krb5_get_creds(ctx, options, cc, target_princ, &impersonate_creds))) {
- krb5_free_principal(ctx, target_princ);
+ if ((code = krb5_get_creds(ctx, options, cc, self_princ, &s4u2self_creds))) {
krb5_get_creds_opt_free(ctx, options);
+ krb5_free_principal(ctx, self_princ);
return code;
}
- krb5_free_principal(ctx, target_princ);
-
- code = krb5_cc_store_cred(ctx, cc, impersonate_creds);
krb5_get_creds_opt_free(ctx, options);
- krb5_free_creds(ctx, impersonate_creds);
+ krb5_free_principal(ctx, self_princ);
+
+ code = krb5_cc_store_cred(ctx, cc, s4u2self_creds);
+ krb5_free_creds(ctx, s4u2self_creds);
return code;
}