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1) Implement call to the provider when cache is out of date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.

1 files changed, 3 insertions, 1 deletions

diff --git a/server/util/btreemap.c b/server/util/btreemap.c
index 2d9b1761..9bfc9855 100644
--- a/server/util/btreemap.c
+++ b/server/util/btreemap.c
@@ -65,7 +65,7 @@ int btreemap_search_key(struct btreemap *map, const void *key, struct btreemap *
 
     tempnode = map;
     while (found == BTREEMAP_EMPTY) {
-        result = tempnode->comparator(tempnode->key, key);
+        result = tempnode->comparator(key, tempnode->key);
         if (result > 0)
         {
             if (tempnode->right)
@@ -150,6 +150,8 @@ int btreemap_set_value(TALLOC_CTX *mem_ctx,
     new_node->key = talloc_steal(new_node, key);
     new_node->value = talloc_steal(new_node, value);
     new_node->comparator = comparator;
+    new_node->left = NULL;
+    new_node->right = NULL;
 
 
     if (found == BTREEMAP_EMPTY)