commit d8ef6b154890e1b6e8842c68ebd68d954c852e38 Author: Nick Mathewson <nickm@torproject.org> Date: Mon Sep 9 20:24:03 2019 -0400 Add a unit test for ed25519 identity parsing in microdescriptors This test makes sure that we parse ed25519 identities to get the correct data from them. It also tests: * That a microdescriptor may not have two ed25519 identities. * That a microdescriptor may not have an ed25519 identity that is not a valid base64-encoded ed25519 key. * That a microdescriptor may have an unrecognized identity type. It will help test the refactoring of ticket31675. --- src/test/test_microdesc.c | 76 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) diff --git a/src/test/test_microdesc.c b/src/test/test_microdesc.c index ad211c7ea..804e6c546 100644 --- a/src/test/test_microdesc.c +++ b/src/test/test_microdesc.c @@ -21,6 +21,7 @@ #include "feature/nodelist/routerstatus_st.h" #include "test/test.h" +#include "test/log_test_helpers.h" #ifdef HAVE_SYS_STAT_H #include <sys/stat.h> @@ -770,6 +771,80 @@ test_md_parse(void *arg) tor_free(mem_op_hex_tmp); } +static void +test_md_parse_id_ed25519(void *arg) +{ + (void)arg; + + /* A correct MD with an ed25519 ID ... and an unspecified ID type, + * which is permitted. */ + const char GOOD_MD[] = + "onion-key\n" + "-----BEGIN RSA PUBLIC KEY-----\n" + "MIGJAoGBAM7uUtq5F6h63QNYIvC+4NcWaD0DjtnrOORZMkdpJhinXUOwce3cD5Dj\n" + "sgdN1wJpWpTQMXJ2DssfSgmOVXETP7qJuZyRprxalQhaEATMDNJA/66Ml1jSO9mZ\n" + "+8Xb7m/4q778lNtkSbsvMaYD2Dq6k2QQ3kMhr9z8oUtX0XA23+pfAgMBAAE=\n" + "-----END RSA PUBLIC KEY-----\n" + "id ed25519 VGhpcyBpc24ndCBhY3R1YWxseSBhIHB1YmxpYyBrZXk\n" + "id wumpus dodecahedron\n"; + + smartlist_t *mds = NULL; + const microdesc_t *md; + + mds = microdescs_parse_from_string(GOOD_MD, + NULL, 1, SAVED_NOWHERE, NULL); + tt_assert(mds); + tt_int_op(smartlist_len(mds), OP_EQ, 1); + md = smartlist_get(mds, 0); + tt_mem_op(md->ed25519_identity_pkey, OP_EQ, + "This isn't actually a public key", ED25519_PUBKEY_LEN); + SMARTLIST_FOREACH(mds, microdesc_t *, m, microdesc_free(m)); + smartlist_free(mds); + + /* As above, but ed25519 ID key appears twice. */ + const char DUPLICATE_KEY[] = + "onion-key\n" + "-----BEGIN RSA PUBLIC KEY-----\n" + "MIGJAoGBAM7uUtq5F6h63QNYIvC+4NcWaD0DjtnrOORZMkdpJhinXUOwce3cD5Dj\n" + "sgdN1wJpWpTQMXJ2DssfSgmOVXETP7qJuZyRprxalQhaEATMDNJA/66Ml1jSO9mZ\n" + "+8Xb7m/4q778lNtkSbsvMaYD2Dq6k2QQ3kMhr9z8oUtX0XA23+pfAgMBAAE=\n" + "-----END RSA PUBLIC KEY-----\n" + "id ed25519 VGhpcyBpc24ndCBhY3R1YWxseSBhIHB1YmxpYyBrZXk\n" + "id ed25519 VGhpcyBpc24ndCBhY3R1YWxseSBhIHB1YmxpYyBrZXk\n"; + + setup_capture_of_logs(LOG_WARN); + mds = microdescs_parse_from_string(DUPLICATE_KEY, + NULL, 1, SAVED_NOWHERE, NULL); + tt_assert(mds); + tt_int_op(smartlist_len(mds), OP_EQ, 0); // no entries. + expect_single_log_msg_containing("Extra ed25519 key"); + mock_clean_saved_logs(); + smartlist_free(mds); + + /* As above, but ed25519 ID key is invalid. */ + const char BOGUS_KEY[] = + "onion-key\n" + "-----BEGIN RSA PUBLIC KEY-----\n" + "MIGJAoGBAM7uUtq5F6h63QNYIvC+4NcWaD0DjtnrOORZMkdpJhinXUOwce3cD5Dj\n" + "sgdN1wJpWpTQMXJ2DssfSgmOVXETP7qJuZyRprxalQhaEATMDNJA/66Ml1jSO9mZ\n" + "+8Xb7m/4q778lNtkSbsvMaYD2Dq6k2QQ3kMhr9z8oUtX0XA23+pfAgMBAAE=\n" + "-----END RSA PUBLIC KEY-----\n" + "id ed25519 VGhpcyBpc24ndCBhY3R1YWxseSBhIHB1YmxpYyZZZZZZZZZZZ\n"; + + mds = microdescs_parse_from_string(BOGUS_KEY, + NULL, 1, SAVED_NOWHERE, NULL); + tt_assert(mds); + tt_int_op(smartlist_len(mds), OP_EQ, 0); // no entries. + expect_single_log_msg_containing("Bogus ed25519 key"); + + done: + if (mds) { + SMARTLIST_FOREACH(mds, microdesc_t *, m, microdesc_free(m)); + smartlist_free(mds); + } + teardown_capture_of_logs(); +} + static int mock_rgsbd_called = 0; static routerstatus_t *mock_rgsbd_val_a = NULL; static routerstatus_t *mock_rgsbd_val_b = NULL; @@ -903,6 +978,7 @@ struct testcase_t microdesc_tests[] = { { "broken_cache", test_md_cache_broken, TT_FORK, NULL, NULL }, { "generate", test_md_generate, 0, NULL, NULL }, { "parse", test_md_parse, 0, NULL, NULL }, + { "parse_id_ed25519", test_md_parse_id_ed25519, 0, NULL, NULL }, { "reject_cache", test_md_reject_cache, TT_FORK, NULL, NULL }, { "corrupt_desc", test_md_corrupt_desc, TT_FORK, NULL, NULL }, END_OF_TESTCASES