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config: Remove AllowInvalidNodes option

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Deprecated in 0.2.9.2-alpha, this commits changes it as OBSOLETE() and cleans
up the code associated with it.

Partially fixes #22060

Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit is contained in:
David Goulet 2017-04-25 13:22:35 -04:00 committed by Nick Mathewson
parent d4a2decc56
commit 2b9823b310
9 changed files with 15 additions and 130 deletions
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3
changes/bug22060 Normal file
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@ -0,0 +1,3 @@
o Remove configuration option (confic):
- AllowInvalidNodes was deprecated in 0.2.9.2-alpha and now has been
rendered obsolete. Code has been removed and feature no longer exists.

7
doc/tor.1.txt
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@ -772,13 +772,6 @@ CLIENT OPTIONS
The following options are useful only for clients (that is, if
**SocksPort**, **TransPort**, **DNSPort**, or **NATDPort** is non-zero):
[[AllowInvalidNodes]] **AllowInvalidNodes** **entry**|**exit**|**middle**|**introduction**|**rendezvous**|**...**::
If some Tor servers are obviously not working right, the directory
authorities can manually mark them as invalid, meaning that it's not
recommended you use them for entry or exit positions in your circuits. You
can opt to use them in some circuit positions, though. The default is
"middle,rendezvous", and other choices are not advised.
[[ExcludeSingleHopRelays]] **ExcludeSingleHopRelays** **0**|**1**::
This option controls whether circuits built by Tor will include relays with
the AllowSingleHopExits flag set to true. If ExcludeSingleHopRelays is set

17
src/or/circuitbuild.c
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@ -1828,7 +1828,7 @@ choose_good_exit_server_general(int need_uptime, int need_capacity)
* we'll retry later in this function with need_update and
* need_capacity set to 0. */
}
if (!(node->is_valid || options->AllowInvalid_ & ALLOW_INVALID_EXIT)) {
if (!(node->is_valid)) {
/* if it's invalid and we don't want it */
n_supported[i] = -1;
// log_fn(LOG_DEBUG,"Skipping node %s (index %d) -- invalid router.",
@ -1968,7 +1968,6 @@ pick_tor2web_rendezvous_node(router_crn_flags_t flags,
const or_options_t *options)
{
const node_t *rp_node = NULL;
const int allow_invalid = (flags & CRN_ALLOW_INVALID) != 0;
const int need_desc = (flags & CRN_NEED_DESC) != 0;
const int pref_addr = (flags & CRN_PREF_ADDR) != 0;
const int direct_conn = (flags & CRN_DIRECT_CONN) != 0;
@ -1980,7 +1979,6 @@ pick_tor2web_rendezvous_node(router_crn_flags_t flags,
/* Add all running nodes to all_live_nodes */
router_add_running_nodes_to_smartlist(all_live_nodes,
allow_invalid,
0, 0, 0,
need_desc,
pref_addr,
@ -2022,9 +2020,6 @@ pick_rendezvous_node(router_crn_flags_t flags)
{
const or_options_t *options = get_options();
if (options->AllowInvalid_ & ALLOW_INVALID_RENDEZVOUS)
flags |= CRN_ALLOW_INVALID;
#ifdef ENABLE_TOR2WEB_MODE
/* We want to connect directly to the node if we can */
router_crn_flags_t direct_flags = flags;
@ -2081,8 +2076,6 @@ choose_good_exit_server(uint8_t purpose,
switch (purpose) {
case CIRCUIT_PURPOSE_C_GENERAL:
if (options->AllowInvalid_ & ALLOW_INVALID_MIDDLE)
flags |= CRN_ALLOW_INVALID;
if (is_internal) /* pick it like a middle hop */
return router_choose_random_node(NULL, options->ExcludeNodes, flags);
else
@ -2280,10 +2273,6 @@ count_acceptable_nodes, (smartlist_t *nodes))
if (! node->is_running)
// log_debug(LD_CIRC,"Nope, the directory says %d is not running.",i);
continue;
/* XXX This clause makes us count incorrectly: if AllowInvalidRouters
* allows this node in some places, then we're getting an inaccurate
* count. For now, be conservative and don't count it. But later we
* should try to be smarter. */
if (! node->is_valid)
// log_debug(LD_CIRC,"Nope, the directory says %d is not valid.",i);
continue;
@ -2354,8 +2343,6 @@ choose_good_middle_server(uint8_t purpose,
flags |= CRN_NEED_UPTIME;
if (state->need_capacity)
flags |= CRN_NEED_CAPACITY;
if (options->AllowInvalid_ & ALLOW_INVALID_MIDDLE)
flags |= CRN_ALLOW_INVALID;
choice = router_choose_random_node(excluded, options->ExcludeNodes, flags);
smartlist_free(excluded);
return choice;
@ -2408,8 +2395,6 @@ choose_good_entry_server(uint8_t purpose, cpath_build_state_t *state,
if (state->need_capacity)
flags |= CRN_NEED_CAPACITY;
}
if (options->AllowInvalid_ & ALLOW_INVALID_ENTRY)
flags |= CRN_ALLOW_INVALID;
choice = router_choose_random_node(excluded, options->ExcludeNodes, flags);
smartlist_free(excluded);

26
src/or/config.c
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@ -205,7 +205,7 @@ static config_var_t option_vars_[] = {
V(AccountingStart, STRING, NULL),
V(Address, STRING, NULL),
V(AllowDotExit, BOOL, "0"),
V(AllowInvalidNodes, CSV, "middle,rendezvous"),
OBSOLETE("AllowInvalidNodes"),
V(AllowNonRFC953Hostnames, BOOL, "0"),
V(AllowSingleHopCircuits, BOOL, "0"),
V(AllowSingleHopExits, BOOL, "0"),
@ -662,8 +662,6 @@ static const config_deprecation_t option_deprecation_notes_[] = {
/* Deprecated since 0.2.9.2-alpha... */
{ "AllowDotExit", "Unrestricted use of the .exit notation can be used for "
"a wide variety of application-level attacks." },
{ "AllowInvalidNodes", "There is no reason to enable this option; at best "
"it will make you easier to track." },
{ "AllowSingleHopCircuits", "Almost no relays actually allow single-hop "
"exits, making this option pointless." },
{ "AllowSingleHopExits", "Turning this on will make your relay easier "
@ -3372,28 +3370,6 @@ options_validate(or_options_t *old_options, or_options_t *options,
server_mode(options));
options->MaxMemInQueues_low_threshold = (options->MaxMemInQueues / 4) * 3;
options->AllowInvalid_ = 0;
if (options->AllowInvalidNodes) {
SMARTLIST_FOREACH_BEGIN(options->AllowInvalidNodes, const char *, cp) {
if (!strcasecmp(cp, "entry"))
options->AllowInvalid_ |= ALLOW_INVALID_ENTRY;
else if (!strcasecmp(cp, "exit"))
options->AllowInvalid_ |= ALLOW_INVALID_EXIT;
else if (!strcasecmp(cp, "middle"))
options->AllowInvalid_ |= ALLOW_INVALID_MIDDLE;
else if (!strcasecmp(cp, "introduction"))
options->AllowInvalid_ |= ALLOW_INVALID_INTRODUCTION;
else if (!strcasecmp(cp, "rendezvous"))
options->AllowInvalid_ |= ALLOW_INVALID_RENDEZVOUS;
else {
tor_asprintf(msg,
"Unrecognized value '%s' in AllowInvalidNodes", cp);
return -1;
}
} SMARTLIST_FOREACH_END(cp);
}
if (!options->SafeLogging ||
!strcasecmp(options->SafeLogging, "0")) {
options->SafeLogging_ = SAFELOG_SCRUB_NONE;

14
src/or/or.h
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@ -3470,15 +3470,6 @@ static inline const origin_circuit_t *CONST_TO_ORIGIN_CIRCUIT(
return DOWNCAST(origin_circuit_t, x);
}
/** Bitfield type: things that we're willing to use invalid routers for. */
typedef enum invalid_router_usage_t {
ALLOW_INVALID_ENTRY =1,
ALLOW_INVALID_EXIT =2,
ALLOW_INVALID_MIDDLE =4,
ALLOW_INVALID_RENDEZVOUS =8,
ALLOW_INVALID_INTRODUCTION=16,
} invalid_router_usage_t;
/* limits for TCP send and recv buffer size used for constrained sockets */
#define MIN_CONSTRAINED_TCP_BUFFER 2048
#define MAX_CONSTRAINED_TCP_BUFFER 262144 /* 256k */
@ -3604,10 +3595,6 @@ typedef struct {
int DisableAllSwap; /**< Boolean: Attempt to call mlockall() on our
* process for all current and future memory. */
/** List of "entry", "middle", "exit", "introduction", "rendezvous". */
smartlist_t *AllowInvalidNodes;
/** Bitmask; derived from AllowInvalidNodes. */
invalid_router_usage_t AllowInvalid_;
config_line_t *ExitPolicy; /**< Lists of exit policy components. */
int ExitPolicyRejectPrivate; /**< Should we not exit to reserved private
* addresses, and our own published addresses?
@ -5356,7 +5343,6 @@ typedef enum {
CRN_NEED_UPTIME = 1<<0,
CRN_NEED_CAPACITY = 1<<1,
CRN_NEED_GUARD = 1<<2,
CRN_ALLOW_INVALID = 1<<3,
/* XXXX not used, apparently. */
CRN_WEIGHT_AS_EXIT = 1<<5,
CRN_NEED_DESC = 1<<6,

2
src/or/rendservice.c
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@ -4179,8 +4179,6 @@ rend_consider_services_intro_points(void)
const node_t *node;
rend_intro_point_t *intro;
router_crn_flags_t flags = CRN_NEED_UPTIME|CRN_NEED_DESC;
if (get_options()->AllowInvalid_ & ALLOW_INVALID_INTRODUCTION)
flags |= CRN_ALLOW_INVALID;
router_crn_flags_t direct_flags = flags;
direct_flags |= CRN_PREF_ADDR;
direct_flags |= CRN_DIRECT_CONN;

17
src/or/routerlist.c
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@ -2317,17 +2317,16 @@ routerlist_add_node_and_family(smartlist_t *sl, const routerinfo_t *router)
* we can pick a node for a circuit.
*/
void
router_add_running_nodes_to_smartlist(smartlist_t *sl, int allow_invalid,
int need_uptime, int need_capacity,
int need_guard, int need_desc,
int pref_addr, int direct_conn)
router_add_running_nodes_to_smartlist(smartlist_t *sl, int need_uptime,
int need_capacity, int need_guard,
int need_desc, int pref_addr,
int direct_conn)
{
const int check_reach = !router_skip_or_reachability(get_options(),
pref_addr);
/* XXXX MOVE */
SMARTLIST_FOREACH_BEGIN(nodelist_get_list(), const node_t *, node) {
if (!node->is_running ||
(!node->is_valid && !allow_invalid))
if (!node->is_running || !node->is_valid)
continue;
if (need_desc && !(node->ri || (node->rs && node->md)))
continue;
@ -2773,8 +2772,6 @@ node_sl_choose_by_bandwidth(const smartlist_t *sl,
* a minimum uptime, return one of those.
* If <b>CRN_NEED_CAPACITY</b> is set in flags, weight your choice by the
* advertised capacity of each router.
* If <b>CRN_ALLOW_INVALID</b> is not set in flags, consider only Valid
* routers.
* If <b>CRN_NEED_GUARD</b> is set in flags, consider only Guard routers.
* If <b>CRN_WEIGHT_AS_EXIT</b> is set in flags, we weight bandwidths as if
* picking an exit node, otherwise we weight bandwidths for picking a relay
@ -2795,7 +2792,6 @@ router_choose_random_node(smartlist_t *excludedsmartlist,
const int need_uptime = (flags & CRN_NEED_UPTIME) != 0;
const int need_capacity = (flags & CRN_NEED_CAPACITY) != 0;
const int need_guard = (flags & CRN_NEED_GUARD) != 0;
const int allow_invalid = (flags & CRN_ALLOW_INVALID) != 0;
const int weight_for_exit = (flags & CRN_WEIGHT_AS_EXIT) != 0;
const int need_desc = (flags & CRN_NEED_DESC) != 0;
const int pref_addr = (flags & CRN_PREF_ADDR) != 0;
@ -2823,8 +2819,7 @@ router_choose_random_node(smartlist_t *excludedsmartlist,
if ((r = routerlist_find_my_routerinfo()))
routerlist_add_node_and_family(excludednodes, r);
router_add_running_nodes_to_smartlist(sl, allow_invalid,
need_uptime, need_capacity,
router_add_running_nodes_to_smartlist(sl, need_uptime, need_capacity,
need_guard, need_desc, pref_addr,
direct_conn);
log_debug(LD_CIRC,

8
src/or/routerlist.h
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@ -62,10 +62,10 @@ int router_skip_or_reachability(const or_options_t *options, int try_ip_pref);
int router_get_my_share_of_directory_requests(double *v3_share_out);
void router_reset_status_download_failures(void);
int routers_have_same_or_addrs(const routerinfo_t *r1, const routerinfo_t *r2);
void router_add_running_nodes_to_smartlist(smartlist_t *sl, int allow_invalid,
int need_uptime, int need_capacity,
int need_guard, int need_desc,
int pref_addr, int direct_conn);
void router_add_running_nodes_to_smartlist(smartlist_t *sl, int need_uptime,
int need_capacity, int need_guard,
int need_desc, int pref_addr,
int direct_conn);
const routerinfo_t *routerlist_find_my_routerinfo(void);
uint32_t router_get_advertised_bandwidth(const routerinfo_t *router);

51
src/test/test_options.c
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@ -2007,56 +2007,6 @@ test_options_validate__entry_nodes(void *ignored)
tor_free(msg);
}
static void
test_options_validate__invalid_nodes(void *ignored)
{
(void)ignored;
int ret;
char *msg;
options_test_data_t *tdata = get_options_test_data(
"AllowInvalidNodes something_stupid\n"
"MaxClientCircuitsPending 1\n"
"ConnLimit 1\n"
"SchedulerHighWaterMark__ 42\n"
"SchedulerLowWaterMark__ 10\n");
ret = options_validate(tdata->old_opt, tdata->opt, tdata->def_opt, 0, &msg);
tt_int_op(ret, OP_EQ, -1);
tt_str_op(msg, OP_EQ,
"Unrecognized value 'something_stupid' in AllowInvalidNodes");
tor_free(msg);
free_options_test_data(tdata);
tdata = get_options_test_data("AllowInvalidNodes entry, middle, exit\n"
"MaxClientCircuitsPending 1\n"
"ConnLimit 1\n"
"SchedulerHighWaterMark__ 42\n"
"SchedulerLowWaterMark__ 10\n");
ret = options_validate(tdata->old_opt, tdata->opt, tdata->def_opt, 0, &msg);
tt_int_op(ret, OP_EQ, -1);
tt_int_op(tdata->opt->AllowInvalid_, OP_EQ, ALLOW_INVALID_ENTRY |
ALLOW_INVALID_EXIT | ALLOW_INVALID_MIDDLE);
tor_free(msg);
free_options_test_data(tdata);
tdata = get_options_test_data("AllowInvalidNodes introduction, rendezvous\n"
"MaxClientCircuitsPending 1\n"
"ConnLimit 1\n"
"SchedulerHighWaterMark__ 42\n"
"SchedulerLowWaterMark__ 10\n");
ret = options_validate(tdata->old_opt, tdata->opt, tdata->def_opt, 0, &msg);
tt_int_op(ret, OP_EQ, -1);
tt_int_op(tdata->opt->AllowInvalid_, OP_EQ, ALLOW_INVALID_INTRODUCTION |
ALLOW_INVALID_RENDEZVOUS);
tor_free(msg);
done:
free_options_test_data(tdata);
tor_free(msg);
}
static void
test_options_validate__safe_logging(void *ignored)
{
@ -4530,7 +4480,6 @@ struct testcase_t options_tests[] = {
LOCAL_VALIDATE_TEST(reachable_addresses),
LOCAL_VALIDATE_TEST(use_bridges),
LOCAL_VALIDATE_TEST(entry_nodes),
LOCAL_VALIDATE_TEST(invalid_nodes),
LOCAL_VALIDATE_TEST(safe_logging),
LOCAL_VALIDATE_TEST(publish_server_descriptor),
LOCAL_VALIDATE_TEST(testing),