1 files changed, 116 insertions, 0 deletions
diff --git a/source3/lib/id_cache.c b/source3/lib/id_cache.c
new file mode 100644
index 0000000..adf6ccd
--- /dev/null
+++ b/source3/lib/id_cache.c
@@ -0,0 +1,116 @@
+/*
+ * Samba Unix/Linux SMB client library
+ *
+ * Copyright (C) Gregor Beck 2011
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * @brief  Notify smbd about idmap changes
+ * @file   msg_idmap.c
+ * @author Gregor Beck <gb@sernet.de>
+ * @date   Feb 2011
+ *
+ */
+
+#include "includes.h"
+#include "messages.h"
+#include "lib/id_cache.h"
+#include "../lib/util/memcache.h"
+#include "idmap_cache.h"
+#include "../librpc/gen_ndr/ndr_security.h"
+#include "../libcli/security/dom_sid.h"
+
+bool id_cache_ref_parse(const char* str, struct id_cache_ref* id)
+{
+	struct dom_sid sid;
+	unsigned long ul;
+	char c, trash;
+
+	if (sscanf(str, "%cID %lu%c", &c, &ul, &trash) == 2) {
+		switch(c) {
+		case 'G':
+			id->id.gid = ul;
+			id->type = GID;
+			return true;
+		case 'U':
+			id->id.uid = ul;
+			id->type = UID;
+			return true;
+		default:
+			break;
+		}
+	} else if (string_to_sid(&sid, str)) {
+		id->id.sid = sid;
+		id->type = SID;
+		return true;
+	} else if (strncmp(str, "USER ", 5) == 0) {
+		id->id.name = str + 5;
+		id->type = USERNAME;
+		return true;
+	}
+	return false;
+}
+
+static bool delete_getpwnam_cache(const char *username)
+{
+	DATA_BLOB name = data_blob_string_const_null(username);
+	DEBUG(6, ("Delete passwd struct for %s from memcache\n",
+		  username));
+	memcache_delete(NULL, GETPWNAM_CACHE, name);
+	return true;
+}
+
+void id_cache_delete_from_cache(const struct id_cache_ref* id)
+{
+	switch(id->type) {
+	case UID:
+		idmap_cache_del_uid(id->id.uid);
+		break;
+	case GID:
+		idmap_cache_del_gid(id->id.gid);
+		break;
+	case SID:
+		idmap_cache_del_sid(&id->id.sid);
+		break;
+	case USERNAME:
+		delete_getpwnam_cache(id->id.name);
+		break;
+	default:
+		break;
+	}
+}
+
+void id_cache_delete_message(struct messaging_context *msg_ctx,
+			     void *private_data,
+			     uint32_t msg_type,
+			     struct server_id server_id,
+			     DATA_BLOB* data)
+{
+	const char *msg = (data && data->data) ? (const char *)data->data : "<NULL>";
+	struct id_cache_ref id;
+
+	if (!id_cache_ref_parse(msg, &id)) {
+		DEBUG(0, ("Invalid ?ID: %s\n", msg));
+		return;
+	}
+
+	id_cache_delete_from_cache(&id);
+}
+
+void id_cache_register_msgs(struct messaging_context *ctx)
+{
+	messaging_register(ctx, NULL, ID_CACHE_DELETE, id_cache_delete_message);
+}