From d0068be0ddad3113052b213f5eab4d17211c38b3 Mon Sep 17 00:00:00 2001
From: Neel Chauhan <neel@neelc.org>
Date: Sat, 14 Dec 2019 13:16:59 -0500
Subject: Allow ed25519 keys to be banned in approved-routers

---
 src/feature/dirauth/process_descs.h | 55 ++++++++++++++++++++++++++++++++++---
 1 file changed, 51 insertions(+), 4 deletions(-)

(limited to 'src/feature/dirauth/process_descs.h')

diff --git a/src/feature/dirauth/process_descs.h b/src/feature/dirauth/process_descs.h
index e504daa7b7..269a950448 100644
--- a/src/feature/dirauth/process_descs.h
+++ b/src/feature/dirauth/process_descs.h
@@ -15,6 +15,48 @@
 // for was_router_added_t.
 #include "feature/nodelist/routerlist.h"
 
+#include "src/lib/crypt_ops/crypto_ed25519.h"
+
+struct authdir_config_t;
+
+/** Target of status_by_digest map. */
+typedef uint32_t rtr_flags_t;
+
+int add_rsa_fingerprint_to_dir(const char *fp, struct authdir_config_t *list,
+                               rtr_flags_t add_status);
+
+int add_ed25519_to_dir(const ed25519_public_key_t *edkey,
+                       struct authdir_config_t *list,
+                       rtr_flags_t add_status);
+
+/** List of nickname-\>identity fingerprint mappings for all the routers
+ * that we name.  Used to prevent router impersonation. */
+typedef struct authdir_config_t {
+  strmap_t *fp_by_name; /**< Map from lc nickname to fingerprint. */
+  digestmap_t *status_by_digest; /**< Map from digest to router_status_t. */
+  digest256map_t *status_by_digest256; /**< Map from digest256 to
+                                        * router_status_t. */
+} authdir_config_t;
+
+#if defined(PROCESS_DESCS_PRIVATE) || defined(TOR_UNIT_TESTS)
+
+/*                 1  Historically used to indicate Named */
+#define RTR_INVALID 2  /**< Believed invalid. */
+#define RTR_REJECT  4  /**< We will not publish this router. */
+/*                 8  Historically used to avoid using this as a dir. */
+#define RTR_BADEXIT 16 /**< We'll tell clients not to use this as an exit. */
+/*                 32 Historically used to indicade Unnamed */
+
+#endif /* defined(TOR_UNIT_TESTS) */
+
+#ifdef TOR_UNIT_TESTS
+
+void authdir_init_fingerprint_list(void);
+
+authdir_config_t *authdir_return_fingerprint_list(void);
+
+#endif /* defined(PROCESS_DESCS_PRIVATE) || defined(TOR_UNIT_TESTS) */
+
 void dirserv_free_fingerprint_list(void);
 
 #ifdef HAVE_MODULE_DIRAUTH
@@ -28,11 +70,13 @@ enum was_router_added_t dirserv_add_descriptor(routerinfo_t *ri,
                                                const char **msg,
                                                const char *source);
 
-int dirserv_would_reject_router(const routerstatus_t *rs);
+int dirserv_would_reject_router(const routerstatus_t *rs,
+                                const vote_routerstatus_t *vrs);
 int authdir_wants_to_reject_router(routerinfo_t *ri, const char **msg,
                                    int complain,
                                    int *valid_out);
-int dirserv_add_own_fingerprint(crypto_pk_t *pk);
+int dirserv_add_own_fingerprint(crypto_pk_t *pk,
+                                const ed25519_public_key_t *edkey);
 uint32_t dirserv_router_get_status(const routerinfo_t *router,
                                    const char **msg,
                                    int severity);
@@ -68,9 +112,11 @@ dirserv_add_descriptor(routerinfo_t *ri,
   return (enum was_router_added_t)0;
 }
 static inline int
-dirserv_would_reject_router(const routerstatus_t *rs)
+dirserv_would_reject_router(const routerstatus_t *rs,
+                            const vote_routerstatus_t *vrs)
 {
   (void)rs;
+  (void)vrs;
   return 0;
 }
 static inline int
@@ -85,9 +131,10 @@ authdir_wants_to_reject_router(routerinfo_t *ri, const char **msg,
   return 0;
 }
 static inline int
-dirserv_add_own_fingerprint(crypto_pk_t *pk)
+dirserv_add_own_fingerprint(crypto_pk_t *pk, const ed25519_public_key_t *edkey)
 {
   (void)pk;
+  (void)edkey;
   return 0;
 }
 static inline uint32_t
-- 
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