ladishd: data integrity checks

daemon/check_integrity.c

@@ -0,0 +1,139 @@
+/* -*- Mode: C ; c-basic-offset: 2 -*- */
+/*
+ * LADI Session Handler (ladish)
+ *
+ * Copyright (C) 2010 Nedko Arnaudov <nedko@arnaudov.name>
+ *
+ **************************************************************************
+ * This file contains the code that checks data integrity
+ **************************************************************************
+ *
+ * LADI Session Handler 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * LADI Session Handler 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 LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
+ * or write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <unistd.h>             /* usleep() */
+#include "studio.h"
+#include "../proxies/notify_proxy.h"
+
+struct ladish_check_vgraph_integrity_context
+{
+  ladish_graph_handle jack_graph;
+};
+
+static void ladish_check_integrity_fail(const char * message)
+{
+  log_error("Integirity check failed: %s", message);
+  ladish_notify_simple(LADISH_NOTIFY_URGENCY_HIGH, "ladish daemon integrity check failed", LADISH_CHECK_LOG_TEXT);
+  usleep(3 * 1000000);
+  ASSERT_NO_PASS;
+}
+
+#define ctx_ptr ((struct ladish_check_vgraph_integrity_context *)context)
+
+bool
+ladish_check_vgraph_integrity_client_begin_callback(
+  void * context,
+  ladish_graph_handle graph_handle,
+  ladish_client_handle client_handle,
+  const char * client_name,
+  void ** client_iteration_context_ptr_ptr)
+{
+  return true;
+}
+
+bool
+ladish_check_vgraph_integrity_port_callback(
+  void * context,
+  ladish_graph_handle vgraph,
+  void * client_iteration_context_ptr,
+  ladish_client_handle client_handle,
+  const char * client_name,
+  ladish_port_handle vport,
+  const char * port_name,
+  uint32_t port_type,
+  uint32_t port_flags)
+{
+  uuid_t uuid;
+  ladish_port_handle jport;
+  char uuid_str[37];
+  bool link;
+
+  ladish_port_get_uuid(vport, uuid);
+  uuid_unparse(uuid, uuid_str);
+
+  link = ladish_port_is_link(vport);
+  if (link)
+  {
+    return true;
+  }
+
+  jport = ladish_graph_find_port_by_uuid(ctx_ptr->jack_graph, uuid, false, vgraph);
+  if (jport == NULL)
+  {
+    log_error("vgraph: %s", ladish_graph_get_description(vgraph));
+    log_error("client name: %s", client_name);
+    log_error("port name: %s", port_name);
+    log_error("port uuid: %s", uuid_str);
+    log_error("port ptr: %p", vport);
+    log_error("port type: 0x%"PRIX32, port_type);
+    log_error("port flags: 0x%"PRIX32, port_flags);
+    ladish_check_integrity_fail("vgraph port not found in JACK graph.");
+  }
+
+  return true;
+}
+
+bool
+ladish_check_vgraph_integrity_client_end_callback(
+    void * context,
+    ladish_graph_handle graph_handle,
+    ladish_client_handle client_handle,
+    const char * client_name,
+    void * client_iteration_context_ptr)
+{
+  return true;
+}
+
+#undef ctx_ptr
+
+bool ladish_check_vgraph_integrity(void * context, ladish_graph_handle graph, ladish_app_supervisor_handle app_supervisor)
+{
+  ladish_graph_iterate_nodes(
+    graph,
+    true,
+    context,
+    ladish_check_vgraph_integrity_client_begin_callback,
+    ladish_check_vgraph_integrity_port_callback,
+    ladish_check_vgraph_integrity_client_end_callback);
+
+  return true;
+}
+
+void ladish_check_integrity(void)
+{
+  struct ladish_check_vgraph_integrity_context ctx;
+
+  //ladish_check_integrity_fail("test");
+
+  if (!ladish_studio_is_loaded())
+  {
+    return;
+  }
+
+  ctx.jack_graph = ladish_studio_get_jack_graph();
+
+  ladish_studio_iterate_virtual_graphs(&ctx, ladish_check_vgraph_integrity);
+}

daemon/cmd_save_studio.c

@@ -220,6 +220,8 @@ static bool run(void * command_context)
     goto exit;
   }
 
+  ladish_check_integrity();
+
   if (!ladish_studio_compose_filename(cmd_ptr->studio_name, &filename, &bak_filename))
   {
     log_error("failed to compose studio filename");

daemon/common.h

@@ -59,4 +59,6 @@ struct connection
 
 extern bool g_quit;
 
+void ladish_check_integrity(void);
+
 #endif /* #ifndef COMMON_H__CFDC869A_31AE_4FA3_B2D3_DACA8488CA55__INCLUDED */

daemon/main.c

@@ -382,6 +382,7 @@ int main(int argc, char ** argv, char ** envp)
     dbus_connection_read_write_dispatch(g_dbus_connection, 50);
     loader_run();
     ladish_studio_run();
+    ladish_check_integrity();
   }
 
   emit_clean_exit();

daemon/room_save.c

@@ -53,6 +53,8 @@ static bool ladish_room_save_project_do(struct ladish_room * room_ptr)
 
   log_info("Saving project '%s' in room '%s' to '%s'", room_ptr->project_name, room_ptr->name, room_ptr->project_dir);
 
+  ladish_check_integrity();
+
   time(&timestamp);
   ctime_r(&timestamp, timestamp_str);
   timestamp_str[24] = 0;

daemon/save.c

@@ -672,6 +672,8 @@ bool ladish_write_vgraph(int fd, int indent, ladish_graph_handle vgraph, ladish_
 {
   struct ladish_write_context context;
 
+  ladish_check_integrity();
+
   context.fd = fd;
   context.indent = indent + 1;
 
@@ -735,6 +737,8 @@ bool ladish_write_room_link_ports(int fd, int indent, ladish_room_handle room)
 {
   struct ladish_write_context context;
 
+  ladish_check_integrity();
+
   context.fd = fd;
   context.indent = indent;
 
@@ -939,6 +943,8 @@ bool ladish_write_jgraph(int fd, int indent, ladish_graph_handle vgraph)
 {
   struct ladish_write_jack_context context;
 
+  ladish_check_integrity();
+
   if (!ladish_write_indented_string(fd, indent, "<clients>\n"))
   {
     return false;

wscript

@@ -364,6 +364,7 @@ def build(bld):
         'room_load.c',
         'recent_store.c',
         'recent_projects.c',
+        'check_integrity.c',
         ]:
         daemon.source.append(os.path.join("daemon", source))