Move literally everything out of src/or

This commit won't build yet -- it just puts everything in a slightly
more logical place.

The reasoning here is that "src/core" will hold the stuff that every (or
nearly every) tor instance will need in order to do onion routing.
Other features (including some necessary ones) will live in
"src/feature".  The "src/app" directory will hold the stuff needed
to have Tor be an application you can actually run.

This commit DOES NOT refactor the former contents of src/or into a
logical set of acyclic libraries, or change any code at all.  That
will have to come in the future.

We will continue to move things around and split them in the future,
but I hope this lays a reasonable groundwork for doing so.

1 files changed, 42 insertions, 0 deletions

diff --git a/src/app/main/tor_main.c b/src/app/main/tor_main.c
new file mode 100644
index 0000000000..8c497fff8a
--- /dev/null
+++ b/src/app/main/tor_main.c
@@ -0,0 +1,42 @@
+/* Copyright 2001-2004 Roger Dingledine.
+ * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
+ * Copyright (c) 2007-2018, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+#include "orconfig.h"
+#ifdef ENABLE_RESTART_DEBUGGING
+#include <stdlib.h>
+#endif
+
+/**
+ * \file tor_main.c
+ * \brief Stub module containing a main() function.
+ *
+ * We keep the main function in a separate module so that the unit
+ * tests, which have their own main()s, can link against main.c.
+ **/
+
+int tor_main(int argc, char *argv[]);
+
+/** We keep main() in a separate file so that our unit tests can use
+ * functions from main.c.
+ */
+int
+main(int argc, char *argv[])
+{
+  int r;
+#ifdef ENABLE_RESTART_DEBUGGING
+  int restart_count = getenv("TOR_DEBUG_RESTART") ? 1 : 0;
+ again:
+#endif
+  r = tor_main(argc, argv);
+  if (r < 0 || r > 255)
+    return 1;
+#ifdef ENABLE_RESTART_DEBUGGING
+  else if (r == 0 && restart_count--)
+    goto again;
+#endif
+  else
+    return r;
+}
+