Rewrite HBAC rule evaluator

Add helper function msgs2attrs_array

This function converts a list of ldb_messages into a list of
sysdb_attrs.

Conflicts:

	src/providers/ldap/ldap_common.c
	src/providers/ldap/ldap_common.h

Add HBAC evaluator and tests

Add helper functions for looking up HBAC rule components

Remove old HBAC implementation

Add new HBAC lookup and evaluation routines

Conflicts:

	Makefile.am

Add ipa_hbac_refresh option

This option describes the time between refreshes of the HBAC rules
on the IPA server.

Add ipa_hbac_treat_deny_as option

By default, we will treat the presence of any DENY rule as denying
all users. This option will allow the admin to explicitly ignore
DENY rules during a transitional period.

Treat NULL or empty rhost as unknown

Previously, we were assuming this meant it was coming from the
localhost, but this is not a safe assumption. We will now treat it
as unknown and it will fail to match any rule that requires a
specified srchost or group of srchosts.

libipa_hbac: Support case-insensitive comparisons with UTF8

UTF8 HBAC test

Fix memory leak in ipa_hbac_evaluate_rules

https://fedorahosted.org/sssd/ticket/933

Fix incorrect NULL check in ipa_hbac_common.c

https://fedorahosted.org/sssd/ticket/936

Require matched version and release for libipa_hbac

Add rule validator to libipa_hbac

https://fedorahosted.org/sssd/ticket/943

2 files changed, 33 insertions, 0 deletions

diff --git a/src/providers/ldap/ldap_common.c b/src/providers/ldap/ldap_common.c
index d2477bcf2..31b8139ae 100644
--- a/src/providers/ldap/ldap_common.c
+++ b/src/providers/ldap/ldap_common.c
@@ -1045,3 +1045,32 @@ bool sdap_is_secure_uri(const char *uri)
     }
     return false;
 }
+
+errno_t msgs2attrs_array(TALLOC_CTX *mem_ctx, size_t count,
+                         struct ldb_message **msgs,
+                         struct sysdb_attrs ***attrs)
+{
+    int i;
+    struct sysdb_attrs **a;
+
+    a = talloc_array(mem_ctx, struct sysdb_attrs *, count);
+    if (a == NULL) {
+        DEBUG(1, ("talloc_array failed.\n"));
+        return ENOMEM;
+    }
+
+    for (i = 0; i < count; i++) {
+        a[i] = talloc(a, struct sysdb_attrs);
+        if (a[i] == NULL) {
+            DEBUG(1, ("talloc_array failed.\n"));
+            talloc_free(a);
+            return ENOMEM;
+        }
+        a[i]->num = msgs[i]->num_elements;
+        a[i]->a = talloc_steal(a[i], msgs[i]->elements);
+    }
+
+    *attrs = a;
+
+    return EOK;
+}
diff --git a/src/providers/ldap/ldap_common.h b/src/providers/ldap/ldap_common.h
index 9146da5a9..70ffd1485 100644
--- a/src/providers/ldap/ldap_common.h
+++ b/src/providers/ldap/ldap_common.h
@@ -162,4 +162,8 @@ errno_t list_missing_attrs(TALLOC_CTX *mem_ctx,
 
 bool sdap_is_secure_uri(const char *uri);
 
+errno_t msgs2attrs_array(TALLOC_CTX *mem_ctx, size_t count,
+                         struct ldb_message **msgs,
+                         struct sysdb_attrs ***attrs);
+
 #endif /* _LDAP_COMMON_H_ */