uuid plugin: convert the plugin to use the libuuid library

The DS guys decided not to expose the DS inetrnal functions used to generate
UUIDs for DS. This means the interface is not guaranteed to be available.
Switch the ipa_uuid plugin to use the system libuuid plugin instead.

NOTE: This causes once again a change in the tring format used for UUIDs.

fixes: https://fedorahosted.org/freeipa/ticket/465

3 files changed, 29 insertions, 10 deletions

diff --git a/daemons/configure.ac b/daemons/configure.ac
index b7ad33fe..53806f52 100644
--- a/daemons/configure.ac
+++ b/daemons/configure.ac
@@ -202,6 +202,14 @@ AC_CHECK_LIB(crypto, DES_set_key_unchecked, [SSL_LIBS="-lcrypto"])
 AC_SUBST(SSL_LIBS)
 
 dnl ---------------------------------------------------------------------------
+dnl - Check for UUID library
+dnl ---------------------------------------------------------------------------
+AC_CHECK_HEADERS(uuid/uuid.h,,[AC_MSG_ERROR([uuid/uuid.h not found])])
+
+AC_CHECK_LIB(uuid, uuid_generate_time, [UUID_LIBS="-luuid"])
+AC_SUBST(UUID_LIBS)
+
+dnl ---------------------------------------------------------------------------
 dnl - Check for Python
 dnl ---------------------------------------------------------------------------
 
diff --git a/daemons/ipa-slapi-plugins/ipa-uuid/Makefile.am b/daemons/ipa-slapi-plugins/ipa-uuid/Makefile.am
index 37bd9290..167a1963 100644
--- a/daemons/ipa-slapi-plugins/ipa-uuid/Makefile.am
+++ b/daemons/ipa-slapi-plugins/ipa-uuid/Makefile.am
@@ -26,6 +26,7 @@ libipa_uuid_la_LDFLAGS = -avoid-version
 
 libipa_uuid_la_LIBADD = 	\
 	$(MOZLDAP_LIBS)		\
+	$(UUID_LIBS)		\
 	$(NULL)
 
 appdir = $(IPA_DATA_DIR)
diff --git a/daemons/ipa-slapi-plugins/ipa-uuid/ipa_uuid.c b/daemons/ipa-slapi-plugins/ipa-uuid/ipa_uuid.c
index 8455eed3..919abc82 100644
--- a/daemons/ipa-slapi-plugins/ipa-uuid/ipa_uuid.c
+++ b/daemons/ipa-slapi-plugins/ipa-uuid/ipa_uuid.c
@@ -43,10 +43,7 @@
 #include "slapi-plugin.h"
 #include "nspr.h"
 #include "prclist.h"
-
-#ifndef TEMP_TEMP_GET_A_DEFINE_FROM_389DS_TEAM
-int slapi_uniqueIDGenerateString(char **uId);
-#endif
+#include "uuid/uuid.h"
 
 #define IPAUUID_PLUGIN_NAME "ipa-uuid-plugin"
 #define IPAUUID_PLUGIN_VERSION 0x00010000
@@ -56,6 +53,8 @@ int slapi_uniqueIDGenerateString(char **uId);
 #define IPAUUID_SUCCESS 0
 #define IPAUUID_FAILURE -1
 
+#define IPAUUID_STR_SIZE 36
+
 #ifndef discard_const
 #define discard_const(ptr) ((void *)((uintptr_t)(ptr)))
 #endif
@@ -760,6 +759,16 @@ ipauuid_list_contains_attr(char **list, char *attr)
     return ret;
 }
 
+/* this function must be passed a preallocated buffer of 37 characters in the
+ * out parameter */
+static void ipauuid_generate_uuid(char *out)
+{
+    uuid_t uu;
+
+    uuid_generate_time(uu);
+    uuid_unparse_lower(uu, out);
+}
+
 /* for mods and adds:
 	where dn's are supplied, the closest in scope
 	is used as long as the type filter matches
@@ -1063,13 +1072,13 @@ static int ipauuid_pre_op(Slapi_PBlock *pb, int modtype)
             char *new_value;
 
             /* create the value to add */
-            ret = slapi_uniqueIDGenerateString(&value);
-            if (ret != 0) {
-                errstr = slapi_ch_smprintf("Allocation of a new value for"
-                                           " attr %s failed! Unable to "
-                                           "proceed.", cfgentry->attr);
-                break;
+            value = slapi_ch_calloc(1, IPAUUID_STR_SIZE + 1);
+            if (!value) {
+                LOG_OOM();
+                ret = LDAP_OPERATIONS_ERROR;
+                goto done;
             }
+            ipauuid_generate_uuid(value);
 
             if (cfgentry->prefix) {
                 new_value = slapi_ch_smprintf("%s%s",
@@ -1178,6 +1187,7 @@ done:
     }
 
     slapi_ch_array_free(generated_attrs);
+    slapi_ch_free_string(&value);
 
     if (free_entry && e) {
         slapi_entry_free(e);