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, 75 insertions, 0 deletions

diff --git a/src/feature/dircache/consdiffmgr.h b/src/feature/dircache/consdiffmgr.h
new file mode 100644
index 0000000000..66c3d65002
--- /dev/null
+++ b/src/feature/dircache/consdiffmgr.h
@@ -0,0 +1,75 @@
+/* Copyright (c) 2017-2018, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+#ifndef TOR_CONSDIFFMGR_H
+#define TOR_CONSDIFFMGR_H
+
+enum compress_method_t;
+
+/**
+ * Possible outcomes from trying to look up a given consensus diff.
+ */
+typedef enum consdiff_status_t {
+  CONSDIFF_AVAILABLE,
+  CONSDIFF_NOT_FOUND,
+  CONSDIFF_IN_PROGRESS,
+} consdiff_status_t;
+
+typedef struct consdiff_cfg_t {
+  int32_t cache_max_num;
+} consdiff_cfg_t;
+
+struct consensus_cache_entry_t; // from conscache.h
+
+int consdiffmgr_add_consensus(const char *consensus,
+                              const networkstatus_t *as_parsed);
+
+consdiff_status_t consdiffmgr_find_consensus(
+                           struct consensus_cache_entry_t **entry_out,
+                           consensus_flavor_t flavor,
+                           enum compress_method_t method);
+
+consdiff_status_t consdiffmgr_find_diff_from(
+                           struct consensus_cache_entry_t **entry_out,
+                           consensus_flavor_t flavor,
+                           int digest_type,
+                           const uint8_t *digest,
+                           size_t digestlen,
+                           enum compress_method_t method);
+
+int consensus_cache_entry_get_voter_id_digests(
+                                  const struct consensus_cache_entry_t *ent,
+                                  smartlist_t *out);
+int consensus_cache_entry_get_fresh_until(
+                                  const struct consensus_cache_entry_t *ent,
+                                  time_t *out);
+int consensus_cache_entry_get_valid_until(
+                                  const struct consensus_cache_entry_t *ent,
+                                  time_t *out);
+int consensus_cache_entry_get_valid_after(
+                                  const struct consensus_cache_entry_t *ent,
+                                  time_t *out);
+
+void consdiffmgr_rescan(void);
+int consdiffmgr_cleanup(void);
+void consdiffmgr_enable_background_compression(void);
+void consdiffmgr_configure(const consdiff_cfg_t *cfg);
+struct sandbox_cfg_elem;
+int consdiffmgr_register_with_sandbox(struct sandbox_cfg_elem **cfg);
+void consdiffmgr_free_all(void);
+int consdiffmgr_validate(void);
+
+#ifdef CONSDIFFMGR_PRIVATE
+STATIC unsigned n_diff_compression_methods(void);
+STATIC unsigned n_consensus_compression_methods(void);
+STATIC consensus_cache_t *cdm_cache_get(void);
+STATIC consensus_cache_entry_t *cdm_cache_lookup_consensus(
+                          consensus_flavor_t flavor, time_t valid_after);
+STATIC int cdm_entry_get_sha3_value(uint8_t *digest_out,
+                                    consensus_cache_entry_t *ent,
+                                    const char *label);
+STATIC int uncompress_or_copy(char **out, size_t *outlen,
+                              consensus_cache_entry_t *ent);
+#endif /* defined(CONSDIFFMGR_PRIVATE) */
+
+#endif /* !defined(TOR_CONSDIFFMGR_H) */