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.

4 files changed, 33 insertions, 5 deletions

diff --git a/src/providers/krb5/krb5_child.c b/src/providers/krb5/krb5_child.c
index bfec956b..c434c97f 100644
--- a/src/providers/krb5/krb5_child.c
+++ b/src/providers/krb5/krb5_child.c
@@ -244,11 +244,13 @@ store_creds_in_ccache(krb5_context ctx, krb5_principal princ,
         goto done;
     }
 
+#ifdef HAVE_KRB5_DIRCACHE
     kerr = krb5_cc_switch(ctx, cc);
     if (kerr != 0) {
         KRB5_CHILD_DEBUG(SSSDBG_OP_FAILURE, kerr);
         goto done;
     }
+#endif /* HAVE_KRB5_DIRCACHE */
 
     kerr = krb5_cc_close(ctx, cc);
     if (kerr != 0) {
@@ -366,6 +368,8 @@ done:
     return kerr;
 }
 
+#ifdef HAVE_KRB5_DIRCACHE
+
 static errno_t
 create_ccdir(const char *dirname, uid_t uid, gid_t gid)
 {
@@ -491,6 +495,8 @@ done:
     return kerr;
 }
 
+#endif /* HAVE_KRB5_DIRCACHE */
+
 static krb5_error_code
 create_ccache(uid_t uid, gid_t gid, krb5_context ctx,
               krb5_principal princ, char *ccname, krb5_creds *creds)
@@ -501,8 +507,10 @@ create_ccache(uid_t uid, gid_t gid, krb5_context ctx,
     switch (cctype) {
         case SSS_KRB5_TYPE_FILE:
             return create_ccache_file(ctx, princ, ccname, creds);
+#ifdef HAVE_KRB5_DIRCACHE
         case SSS_KRB5_TYPE_DIR:
             return create_ccache_in_dir(uid, gid, ctx, princ, ccname, creds);
+#endif /* HAVE_KRB5_DIRCACHE */
         default:
             DEBUG(SSSDBG_CRIT_FAILURE, ("Unknown cache type\n"));
             return EINVAL;
diff --git a/src/providers/krb5/krb5_common.c b/src/providers/krb5/krb5_common.c
index f4033d29..ee35b522 100644
--- a/src/providers/krb5/krb5_common.c
+++ b/src/providers/krb5/krb5_common.c
@@ -204,12 +204,16 @@ errno_t check_and_export_options(struct dp_option *opts,
             return ret;
         }
         break;
+
+#ifdef HAVE_KRB5_DIRCACHE
     case SSS_KRB5_TYPE_DIR:
         DEBUG(SSSDBG_CONF_SETTINGS, ("ccache is of type DIR\n"));
         krb5_ctx->cc_be = &dir_cc;
         break;
+#endif
+
     default:
-        DEBUG(SSSDBG_OP_FAILURE, ("Unkown ccname database\n"));
+        DEBUG(SSSDBG_OP_FAILURE, ("Unknown ccname database\n"));
         return EINVAL;
         break;
     }
diff --git a/src/providers/krb5/krb5_utils.c b/src/providers/krb5/krb5_utils.c
index 8cea7cce..68a6aab3 100644
--- a/src/providers/krb5/krb5_utils.c
+++ b/src/providers/krb5/krb5_utils.c
@@ -583,9 +583,13 @@ get_cc_be_ops(enum sss_krb5_cc_type type)
         case SSS_KRB5_TYPE_FILE:
             be = &file_cc;
             break;
+
+#ifdef HAVE_KRB5_DIRCACHE
         case SSS_KRB5_TYPE_DIR:
             be = &dir_cc;
             break;
+#endif /* HAVE_KRB5_DIRCACHE */
+
         case SSS_KRB5_TYPE_UNKNOWN:
             be = NULL;
             break;
@@ -649,9 +653,11 @@ cc_residual_is_used(uid_t uid, const char *ccname,
         }
 
         switch (type) {
+#ifdef HAVE_KRB5_DIRCACHE
             case SSS_KRB5_TYPE_DIR:
                 ret = S_ISDIR(stat_buf.st_mode);
                 break;
+#endif /* HAVE_KRB5_DIRCACHE */
             case SSS_KRB5_TYPE_FILE:
                 ret = S_ISREG(stat_buf.st_mode);
                 break;
@@ -789,6 +795,7 @@ struct sss_krb5_cc_be file_cc = {
     .remove             = cc_file_remove,
 };
 
+#ifdef HAVE_KRB5_DIRCACHE
 /*======== Operations on the DIR: back end ========*/
 errno_t
 cc_dir_create(const char *location, pcre *illegal_re,
@@ -1000,3 +1007,5 @@ struct sss_krb5_cc_be dir_cc = {
     .ccache_for_princ   = cc_dir_cache_for_princ,
     .remove             = cc_dir_remove
 };
+
+#endif /* HAVE_KRB5_DIRCACHE */
diff --git a/src/providers/krb5/krb5_utils.h b/src/providers/krb5/krb5_utils.h
index 5f677cae..d8d96d25 100644
--- a/src/providers/krb5/krb5_utils.h
+++ b/src/providers/krb5/krb5_utils.h
@@ -27,6 +27,7 @@
 #define __KRB5_UTILS_H__
 
 #include <talloc.h>
+#include "config.h"
 
 #include "providers/krb5/krb5_auth.h"
 #include "providers/data_provider.h"
@@ -53,7 +54,6 @@ struct sss_krb5_cc_be {
 };
 
 struct sss_krb5_cc_be file_cc;
-struct sss_krb5_cc_be dir_cc;
 
 errno_t create_ccache_dir(const char *dirname, pcre *illegal_re,
                           uid_t uid, gid_t gid, bool private_path);
@@ -61,9 +61,6 @@ errno_t create_ccache_dir(const char *dirname, pcre *illegal_re,
 errno_t cc_file_create(const char *filename, pcre *illegal_re,
                        uid_t uid, gid_t gid, bool private_path);
 
-errno_t cc_dir_create(const char *location, pcre *illegal_re,
-                      uid_t uid, gid_t gid, bool private_path);
-
 struct sss_krb5_cc_be *get_cc_be_ops(enum sss_krb5_cc_type type);
 struct sss_krb5_cc_be *get_cc_be_ops_ccache(const char *ccache);
 
@@ -75,4 +72,14 @@ errno_t become_user(uid_t uid, gid_t gid);
 
 errno_t get_ccache_file_data(const char *ccache_file, const char *client_name,
                              struct tgt_times *tgtt);
+
+#ifdef HAVE_KRB5_DIRCACHE
+
+struct sss_krb5_cc_be dir_cc;
+
+errno_t cc_dir_create(const char *location, pcre *illegal_re,
+                      uid_t uid, gid_t gid, bool private_path);
+
+#endif /* HAVE_KRB5_DIRCACHE */
+
 #endif /* __KRB5_UTILS_H__ */