Implement GetUserAttributes in the InfoPipe

This patch adds support for requesting user data in the sysdb via
the InfoPipe. It currently has support for reading defined entries
of integral, floating-point or string types.

Tasks remaining:
1) Implement call to the provider when cache is out of date
2) Support byte arrays for userpic and similar

I modified sysdb_search_ctx in sysdb_search.c to accept an array of
attributes to pass into the LDB search.

I also made one additional related fix: the btreemap now sorts in the
correct order. Previously I had accidentally transposed the two
values for sorting, so the map would always have been in exact
reverse order.

2 files changed, 31 insertions, 0 deletions

diff --git a/server/sbus/sssd_dbus.h b/server/sbus/sssd_dbus.h
index 43519b3e..8dd0d3e3 100644
--- a/server/sbus/sssd_dbus.h
+++ b/server/sbus/sssd_dbus.h
@@ -126,4 +126,6 @@ DBusHandlerResult sbus_message_handler(DBusConnection *conn,
 void sbus_conn_send_reply(struct sbus_conn_ctx *conn_ctx,
                           DBusMessage *reply);
 
+int sbus_is_dbus_fixed_type(int dbus_type);
+int sbus_is_dbus_string_type(int dbus_type);
 #endif /* _SSSD_DBUS_H_*/
diff --git a/server/sbus/sssd_dbus_common.c b/server/sbus/sssd_dbus_common.c
index a9e0d816..e5011aa6 100644
--- a/server/sbus/sssd_dbus_common.c
+++ b/server/sbus/sssd_dbus_common.c
@@ -2,6 +2,7 @@
 #include "tevent.h"
 #include "dbus/dbus.h"
 #include "util/util.h"
+#include "util/btreemap.h"
 
 struct timeval _dbus_timeout_get_interval_tv(int interval) {
     struct timeval tv;
@@ -43,3 +44,31 @@ void sbus_remove_timeout(DBusTimeout *timeout, void *data) {
     talloc_free(te);
     dbus_timeout_set_data(timeout, NULL, NULL);
 }
+
+int sbus_is_dbus_fixed_type(int dbus_type)
+{
+    switch (dbus_type) {
+    case DBUS_TYPE_BYTE:
+    case DBUS_TYPE_BOOLEAN:
+    case DBUS_TYPE_INT16:
+    case DBUS_TYPE_UINT16:
+    case DBUS_TYPE_INT32:
+    case DBUS_TYPE_UINT32:
+    case DBUS_TYPE_INT64:
+    case DBUS_TYPE_UINT64:
+    case DBUS_TYPE_DOUBLE:
+        return true;
+    }
+    return false;
+}
+
+int sbus_is_dbus_string_type(int dbus_type)
+{
+    switch(dbus_type) {
+    case DBUS_TYPE_STRING:
+    case DBUS_TYPE_OBJECT_PATH:
+    case DBUS_TYPE_SIGNATURE:
+        return true;
+    }
+    return false;
+}