Revise makedesc.py: teach it how to emit ed signatures and crosscerts

Also, add a trivial ed25519-signed routerinfo to the tests.

src/test/failing_routerdescs.inc

@@ -666,3 +666,49 @@ static const char EX_RI_ZERO_ORPORT[] =
   "wgFKhHI/49NHyWHX5IMQpeicg0T7Qa6qwnUvspH62p8=\n"
   "-----END SIGNATURE-----\n"
   ;
+
+static const char EX_RI_MINIMAL_ED[] =
+  "router fred 127.0.0.1 9001 0 9002\n"
+  "identity-ed25519\n"
+  "-----BEGIN ED25519 CERT-----\n"
+  "AQQABf5iAa+2yD5ryD5kXaWbpmzaTyuTjRfjMTFleDuFGkHe26wrAQAgBABFTAHm\n"
+  "hdZriC+6BRCCMYu48cYc9tUN1adfEROqSHZN3HHP4k/fYgncoxrS3OYDX1x8Ysm/\n"
+  "sqxAXBY4NhCMswWvuDYgtQpro9YaFohiorJkHjyLQXjUeZikCfDrlxyR8AM=\n"
+  "-----END ED25519 CERT-----\n"
+  "signing-key\n"
+  "-----BEGIN RSA PUBLIC KEY-----\n"
+  "MIGJAoGBAOsjlHgM/lPQgjJyfrq0y+cR+iipcAeS2HAU8CK9SATETOTZYrxoL5vH\n"
+  "1BNteT+JxAxpjva+j7r7XZV41xPDx7alVr8G3zQsjqkAt5NnleTfUREUbg0+OSMV\n"
+  "10gU+DgcZJTMehfGYJnuJsF4eQHio/ZTdJLaZML7qwq0iWg3sZfBAgMBAAE=\n"
+  "-----END RSA PUBLIC KEY-----\n"
+  "onion-key\n"
+  "-----BEGIN RSA PUBLIC KEY-----\n"
+  "MIGJAoGBAK9NjRY7GtAZnlxrAZlImChXmGzml0uk2KlCugvju+eIsjSA/zW3LuqW\n"
+  "wqp7Kh488Ak5nUFSlCaV9GjAexT134pynst8P0m/ofrejwlzl5DHd6sFbR33Fkzl\n"
+  "H48zic0QDY+8tKXI732dA4GveEwZDlxxy8sPcvUDaVyTsuZLHR4zAgMBAAE=\n"
+  "-----END RSA PUBLIC KEY-----\n"
+  "ntor-onion-key 71DgscFrk4i58O5GuTerI9g3JL0kz+6QaCstAllz9xw=\n"
+  "ntor-onion-key-crosscert 1\n"
+  "-----BEGIN ED25519 CERT-----\n"
+  "AQoABf5iAUVMAeaF1muIL7oFEIIxi7jxxhz21Q3Vp18RE6pIdk3cAH5ijeKqa+LM\n"
+  "T5Nb0I42Io4Z7BVjXG7sYVSxrospCOI4dqkl2ln3BKNuEFFT42xJwt+XGz3aMyK2\n"
+  "Cpp8w8I8nwU=\n"
+  "-----END ED25519 CERT-----\n"
+  "onion-key-crosscert\n"
+  "-----BEGIN CROSSCERT-----\n"
+  "lAZwD6YVic61NvJ0Iy62cSPuzJl5hJOFYNh9iSG/vn4/lVfnnCik+Gqi2v9pwItC\n"
+  "acwmutCSrMprmmFAW1dgzoU7GzUtdbxaGaOJdg8WwtO4JjFSzScTDB8R6sp0SCAI\n"
+  "PdbzAzJyiMqYcynyyCTiL77iwhUOBPzs2fXlivMtW2E=\n"
+  "-----END CROSSCERT-----\n"
+  "published 2014-10-05 12:00:00\n"
+  "bandwidth 1000 1000 1000\n"
+  "reject *:*\n"
+  "router-sig-ed25519 Oyo/eES+/wsgse1f+YSiJDGatBDaiB4fASf7vJ7GxFeD4OfLbB7OYa4hYNEo5NBssNt/PA55AQVSL8hvzBE3Cg\n"
+  "router-signature\n"
+  "-----BEGIN SIGNATURE-----\n"
+  "wdk26ZtS1H81IxcUThyirANLoszrnYYhOMP57YRAUDEzUr88X6yNDZ5S0tLl+FoT\n"
+  "9XlEVrpN7Z3k4N9WloWb0o/zVVidPMRVwt8YQakSgR8axzMQg6QhQ6zXTiYhiXa4\n"
+  "mawlwYFXsaVDSIIqYA2CudIyF3UBRZuTbw0CFZElMWc=\n"
+  "-----END SIGNATURE-----\n"
+  "\n"
+  ;

src/test/test_dir.c

@@ -352,7 +352,7 @@ test_dir_formats(void *arg)
 #include "failing_routerdescs.inc"
 
 static void
-test_dir_routerparse_bad(void *arg)
+test_dir_routerinfo_parsing(void *arg)
 {
   (void) arg;
 
@@ -377,6 +377,8 @@ test_dir_routerparse_bad(void *arg)
   CHECK_OK(EX_RI_MINIMAL);
   CHECK_OK(EX_RI_MAXIMAL);
 
+  CHECK_OK(EX_RI_MINIMAL_ED);
+
   /* good annotations prepended */
   routerinfo_free(ri);
   ri = router_parse_entry_from_string(EX_RI_MINIMAL, NULL, 0, 0,
@@ -3168,7 +3170,7 @@ test_dir_packages(void *arg)
 struct testcase_t dir_tests[] = {
   DIR_LEGACY(nicknames),
   DIR_LEGACY(formats),
-  DIR(routerparse_bad, 0),
+  DIR(routerinfo_parsing, 0),
   DIR(extrainfo_parsing, 0),
   DIR(parse_router_list, TT_FORK),
   DIR(load_routers, TT_FORK),