Remove incomplete PKINIT OCSP support

pkinit_kdc_ocsp is non-functional in the PKINIT OpenSSL crypto
implementation, so remove most traces of it, including its man page
entry.  If it is present in kdc.conf, error out of PKINIT
initialization instead of silently ignoring the realm entirely.

ticket: 8603 (new)

5 files changed, 11 insertions, 20 deletions

diff --git a/doc/admin/conf_files/kdc_conf.rst b/doc/admin/conf_files/kdc_conf.rst
index 4def01f..3c11e45 100644
--- a/doc/admin/conf_files/kdc_conf.rst
+++ b/doc/admin/conf_files/kdc_conf.rst
@@ -770,9 +770,6 @@ For information about the syntax of some of these options, see
     pkinit is used to authenticate.  This option may be specified
     multiple times.  (New in release 1.14.)
 
-**pkinit_kdc_ocsp**
-    Specifies the location of the KDC's OCSP.
-
 **pkinit_pool**
     Specifies the location of intermediate certificates which may be
     used by the KDC to complete the trust chain between a client's
diff --git a/src/man/kdc.conf.man b/src/man/kdc.conf.man
index 194af5a..9ed4b7e 100644
--- a/src/man/kdc.conf.man
+++ b/src/man/kdc.conf.man
@@ -891,9 +891,6 @@ Specifies an authentication indicator to include in the ticket if
 pkinit is used to authenticate.  This option may be specified
 multiple times.  (New in release 1.14.)
 .TP
-.B \fBpkinit_kdc_ocsp\fP
-Specifies the location of the KDC\(aqs OCSP.
-.TP
 .B \fBpkinit_pool\fP
 Specifies the location of intermediate certificates which may be
 used by the KDC to complete the trust chain between a client\(aqs
diff --git a/src/plugins/preauth/pkinit/pkinit.h b/src/plugins/preauth/pkinit/pkinit.h
index 2ae3d16..f3de9ad 100644
--- a/src/plugins/preauth/pkinit/pkinit.h
+++ b/src/plugins/preauth/pkinit/pkinit.h
@@ -73,6 +73,7 @@
 #define KRB5_CONF_PKINIT_IDENTITIES             "pkinit_identities"
 #define KRB5_CONF_PKINIT_IDENTITY               "pkinit_identity"
 #define KRB5_CONF_PKINIT_KDC_HOSTNAME           "pkinit_kdc_hostname"
+/* pkinit_kdc_ocsp has been removed */
 #define KRB5_CONF_PKINIT_KDC_OCSP               "pkinit_kdc_ocsp"
 #define KRB5_CONF_PKINIT_POOL                   "pkinit_pool"
 #define KRB5_CONF_PKINIT_REQUIRE_CRL_CHECKING   "pkinit_require_crl_checking"
@@ -173,7 +174,6 @@ typedef struct _pkinit_identity_opts {
     char **anchors;
     char **intermediates;
     char **crls;
-    char *ocsp;
     int  idtype;
     char *cert_filename;
     char *key_filename;
diff --git a/src/plugins/preauth/pkinit/pkinit_identity.c b/src/plugins/preauth/pkinit/pkinit_identity.c
index c161a71..e8997c9 100644
--- a/src/plugins/preauth/pkinit/pkinit_identity.c
+++ b/src/plugins/preauth/pkinit/pkinit_identity.c
@@ -122,7 +122,6 @@ pkinit_init_identity_opts(pkinit_identity_opts **idopts)
     opts->anchors = NULL;
     opts->intermediates = NULL;
     opts->crls = NULL;
-    opts->ocsp = NULL;
 
     opts->cert_filename = NULL;
     opts->key_filename = NULL;
@@ -171,12 +170,6 @@ pkinit_dup_identity_opts(pkinit_identity_opts *src_opts,
     if (retval)
         goto cleanup;
 
-    if (src_opts->ocsp != NULL) {
-        newopts->ocsp = strdup(src_opts->ocsp);
-        if (newopts->ocsp == NULL)
-            goto cleanup;
-    }
-
     if (src_opts->cert_filename != NULL) {
         newopts->cert_filename = strdup(src_opts->cert_filename);
         if (newopts->cert_filename == NULL)
@@ -653,10 +646,6 @@ pkinit_identity_prompt(krb5_context context,
         if (retval)
             goto errout;
     }
-    if (idopts->ocsp != NULL) {
-        retval = ENOTSUP;
-        goto errout;
-    }
 
 errout:
     return retval;
diff --git a/src/plugins/preauth/pkinit/pkinit_srv.c b/src/plugins/preauth/pkinit/pkinit_srv.c
index 24da789..a4ce308 100644
--- a/src/plugins/preauth/pkinit/pkinit_srv.c
+++ b/src/plugins/preauth/pkinit/pkinit_srv.c
@@ -1254,7 +1254,7 @@ static krb5_error_code
 pkinit_init_kdc_profile(krb5_context context, pkinit_kdc_context plgctx)
 {
     krb5_error_code retval;
-    char *eku_string = NULL;
+    char *eku_string = NULL, *ocsp_check = NULL;
 
     pkiDebug("%s: entered for realm %s\n", __FUNCTION__, plgctx->realmname);
     retval = pkinit_kdcdefault_string(context, plgctx->realmname,
@@ -1289,7 +1289,15 @@ pkinit_init_kdc_profile(krb5_context context, pkinit_kdc_context plgctx)
 
     pkinit_kdcdefault_string(context, plgctx->realmname,
                              KRB5_CONF_PKINIT_KDC_OCSP,
-                             &plgctx->idopts->ocsp);
+                             &ocsp_check);
+    if (ocsp_check != NULL) {
+        free(ocsp_check);
+        retval = ENOTSUP;
+        krb5_set_error_message(context, retval,
+                               _("OCSP is not supported: (realm: %s)"),
+                               plgctx->realmname);
+        goto errout;
+    }
 
     pkinit_kdcdefault_integer(context, plgctx->realmname,
                               KRB5_CONF_PKINIT_DH_MIN_BITS,