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synced 2024-11-24 12:23:32 +01:00
Add a unittest that reveals the offending case of #23862.
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@ -2237,8 +2237,6 @@ load_downloaded_routers(const char *body, smartlist_t *which,
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return added;
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}
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static int handle_response_fetch_consensus(dir_connection_t *,
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const response_handler_args_t *);
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static int handle_response_fetch_certificate(dir_connection_t *,
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const response_handler_args_t *);
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static int handle_response_fetch_status_vote(dir_connection_t *,
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@ -2585,7 +2583,7 @@ connection_dir_client_reached_eof(dir_connection_t *conn)
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* consensus document by checking the consensus, storing it, and marking
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* router requests as reachable.
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**/
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static int
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STATIC int
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handle_response_fetch_consensus(dir_connection_t *conn,
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const response_handler_args_t *args)
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{
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@ -194,6 +194,9 @@ STATIC void warn_disallowed_anonymous_compression_method(compress_method_t);
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STATIC int handle_response_fetch_hsdesc_v3(dir_connection_t *conn,
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const response_handler_args_t *args);
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STATIC int handle_response_fetch_consensus(dir_connection_t *conn,
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const response_handler_args_t *args);
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#endif /* defined(DIRECTORY_PRIVATE) */
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#ifdef TOR_UNIT_TESTS
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@ -2126,9 +2126,9 @@ circuit_guard_state_free(circuit_guard_state_t *state)
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/** Allocate and return a new circuit_guard_state_t to track the result
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* of using <b>guard</b> for a given operation. */
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static circuit_guard_state_t *
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circuit_guard_state_new(entry_guard_t *guard, unsigned state,
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entry_guard_restriction_t *rst)
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MOCK_IMPL(STATIC circuit_guard_state_t *,
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circuit_guard_state_new,(entry_guard_t *guard, unsigned state,
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entry_guard_restriction_t *rst))
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{
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circuit_guard_state_t *result;
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@ -488,6 +488,10 @@ STATIC entry_guard_t *get_sampled_guard_with_id(guard_selection_t *gs,
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MOCK_DECL(STATIC time_t, randomize_time, (time_t now, time_t max_backdate));
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MOCK_DECL(STATIC circuit_guard_state_t *,
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circuit_guard_state_new,(entry_guard_t *guard, unsigned state,
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entry_guard_restriction_t *rst));
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STATIC entry_guard_t *entry_guard_add_to_sample(guard_selection_t *gs,
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const node_t *node);
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STATIC entry_guard_t *entry_guards_expand_sample(guard_selection_t *gs);
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@ -1720,7 +1720,7 @@ networkstatus_set_current_consensus(const char *consensus,
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{
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networkstatus_t *c=NULL;
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int r, result = -1;
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time_t now = time(NULL);
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time_t now = approx_time();
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const or_options_t *options = get_options();
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char *unverified_fname = NULL, *consensus_fname = NULL;
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int flav = networkstatus_parse_flavor_name(flavor);
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@ -6,13 +6,17 @@
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#include <time.h>
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#define DIRVOTE_PRIVATE
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#define ENTRYNODES_PRIVATE
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#define DIRECTORY_PRIVATE
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#define NETWORKSTATUS_PRIVATE
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#define CONNECTION_PRIVATE
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#define ROUTERLIST_PRIVATE
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#define TOR_UNIT_TESTING
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#include "or.h"
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#include "config.h"
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#include "connection.h"
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#include "container.h"
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#include "control.h"
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#include "directory.h"
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#include "dirvote.h"
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#include "entrynodes.h"
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@ -22,10 +26,13 @@
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#include "policies.h"
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#include "router.h"
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#include "routerlist.h"
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#include "routerset.h"
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#include "routerparse.h"
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#include "shared_random.h"
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#include "statefile.h"
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#include "test.h"
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#include "test_dir_common.h"
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#include "log_test_helpers.h"
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void construct_consensus(char **consensus_text_md);
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@ -411,6 +418,107 @@ test_router_pick_directory_server_impl(void *arg)
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networkstatus_vote_free(con_md);
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}
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static or_state_t *dummy_state = NULL;
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static or_state_t *
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get_or_state_replacement(void)
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{
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return dummy_state;
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}
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static void
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mock_directory_initiate_request(directory_request_t *req)
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{
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(void)req;
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return;
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}
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static circuit_guard_state_t *
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mock_circuit_guard_state_new(entry_guard_t *guard, unsigned state,
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entry_guard_restriction_t *rst)
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{
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(void) guard;
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(void) state;
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(void) rst;
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return NULL;
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}
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/** Test that we will use our directory guards to fetch mds even if we don't
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* have any dirinfo (tests bug #23862). */
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static void
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test_directory_guard_fetch_with_no_dirinfo(void *arg)
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{
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int retval;
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char *consensus_text_md = NULL;
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or_options_t *options = get_options_mutable();
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(void) arg;
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/* Initialize the SRV subsystem */
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sr_init(0);
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/* Initialize the entry node configuration from the ticket */
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options->UseEntryGuards = 1;
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options->StrictNodes = 1;
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get_options_mutable()->EntryNodes = routerset_new();
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routerset_parse(get_options_mutable()->EntryNodes,
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"2121212121212121212121212121212121212121", "foo");
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/* Mock some functions */
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dummy_state = tor_malloc_zero(sizeof(or_state_t));
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MOCK(get_or_state, get_or_state_replacement);
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MOCK(directory_initiate_request, mock_directory_initiate_request);
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/* we need to mock this one to avoid memleaks */
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MOCK(circuit_guard_state_new, mock_circuit_guard_state_new);
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/* Call guards_update_all() to simulate loading our state file (see
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* entry_guards_load_guards_from_state() and ticket #23989). */
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guards_update_all();
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/* Test logic: Simulate the arrival of a new consensus when we have no
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* dirinfo at all. Tor will need to fetch the mds from the consensus. Make
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* sure that Tor will use the specified entry guard instead of relying on the
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* fallback directories. */
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/* Fixup the dirconn that will deliver the consensus */
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dir_connection_t *conn = dir_connection_new(AF_INET);
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tor_addr_from_ipv4h(&conn->base_.addr, 0x7f000001);
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conn->base_.port = 8800;
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TO_CONN(conn)->address = tor_strdup("127.0.0.1");
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conn->base_.purpose = DIR_PURPOSE_FETCH_CONSENSUS;
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conn->requested_resource = tor_strdup("ns");
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/* Construct a consensus */
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construct_consensus(&consensus_text_md);
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tt_assert(consensus_text_md);
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/* Place the consensus in the dirconn */
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response_handler_args_t args;
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memset(&args, 0, sizeof(response_handler_args_t));
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args.status_code = 200;
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args.body = consensus_text_md;
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args.body_len = strlen(consensus_text_md);
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/* Update approx time so that the consensus is considered live */
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update_approx_time(time(NULL)+1010);
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setup_capture_of_logs(LOG_DEBUG);
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/* Now handle the consensus */
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retval = handle_response_fetch_consensus(conn, &args);
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tt_int_op(retval, OP_EQ, 0);
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/* Make sure that our primary guard was chosen */
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/* BUG #23862 falls back to dirserver list!! */
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expect_log_msg_containing("falling back to dirserver list");
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done:
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tor_free(consensus_text_md);
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tor_free(dummy_state);
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connection_free_(TO_CONN(conn));
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entry_guards_free_all();
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teardown_capture_of_logs();
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}
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static connection_t *mocked_connection = NULL;
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/* Mock connection_get_by_type_addr_port_purpose by returning
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@ -494,6 +602,8 @@ struct testcase_t routerlist_tests[] = {
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NODE(launch_descriptor_downloads, 0),
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NODE(router_is_already_dir_fetching, TT_FORK),
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ROUTER(pick_directory_server_impl, TT_FORK),
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{ "directory_guard_fetch_with_no_dirinfo",
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test_directory_guard_fetch_with_no_dirinfo, TT_FORK, NULL, NULL },
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END_OF_TESTCASES
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};
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