KRB5: Auto-detect DIR cache support in configure

We can't support the DIR cache features in systems with kerberos
libraries older than 1.10. Make sure we don't build it on those
systems.

2 files changed, 18 insertions, 2 deletions

diff --git a/src/util/sss_krb5.c b/src/util/sss_krb5.c
index 8a6bfe2d..6cbf8c61 100644
--- a/src/util/sss_krb5.c
+++ b/src/util/sss_krb5.c
@@ -1121,10 +1121,14 @@ sss_krb5_get_type(const char *full_location)
     if (strncmp(full_location, SSS_KRB5_FILE,
                 sizeof(SSS_KRB5_FILE)-1) == 0) {
         return SSS_KRB5_TYPE_FILE;
-    } else if (strncmp(full_location, SSS_KRB5_DIR,
+    }
+#ifdef HAVE_KRB5_DIRCACHE
+    else if (strncmp(full_location, SSS_KRB5_DIR,
                sizeof(SSS_KRB5_DIR)-1) == 0) {
         return SSS_KRB5_TYPE_DIR;
-    } else if (full_location[0] == '/') {
+    }
+#endif /* HAVE_KRB5_DIRCACHE */
+    else if (full_location[0] == '/') {
         return SSS_KRB5_TYPE_FILE;
     }
 
@@ -1147,9 +1151,11 @@ sss_krb5_residual_by_type(const char *full_location,
                 offset = sizeof(SSS_KRB5_FILE)-1;
             }
             break;
+#ifdef HAVE_KRB5_DIRCACHE
         case SSS_KRB5_TYPE_DIR:
             offset = sizeof(SSS_KRB5_DIR)-1;
             break;
+#endif /* HAVE_KRB5_DIRCACHE */
         default:
             return NULL;
     }
@@ -1169,9 +1175,11 @@ sss_krb5_cc_file_path(const char *full_location)
     switch(cc_type) {
         case SSS_KRB5_TYPE_FILE:
             return residual;
+#ifdef HAVE_KRB5_DIRCACHE
         case SSS_KRB5_TYPE_DIR:
             /* DIR::/run/user/tkt_foo */
             if (residual[0] == ':') return residual+1;
+#endif
         case SSS_KRB5_TYPE_UNKNOWN:
             break;
     }
diff --git a/src/util/sss_krb5.h b/src/util/sss_krb5.h
index 34fdc495..4f2e67a7 100644
--- a/src/util/sss_krb5.h
+++ b/src/util/sss_krb5.h
@@ -41,6 +41,12 @@
 #define KERBEROS_PWEXPIRE_WARNING_TIME (7 * 24 * 60 * 60)
 #define KEYTAB_CLEAN_NAME keytab_name ? keytab_name : "default"
 
+#if 0
+#if defined HAVE_KRB5_CC_CACHE_MATCH && defined HAVE_KRB5_CC_GET_FULL_NAME
+#define HAVE_KRB5_DIRCACHE 1
+#endif
+#endif
+
 const char * KRB5_CALLCONV sss_krb5_get_error_message (krb5_context,
                                                    krb5_error_code);
 
@@ -133,7 +139,9 @@ void sss_krb5_get_init_creds_opt_set_canonicalize(krb5_get_init_creds_opt *opts,
 
 enum sss_krb5_cc_type {
     SSS_KRB5_TYPE_FILE,
+#ifdef HAVE_KRB5_DIRCACHE
     SSS_KRB5_TYPE_DIR,
+#endif /* HAVE_KRB5_DIRCACHE */
     SSS_KRB5_TYPE_UNKNOWN
 };