mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-28 06:13:31 +01:00
Move many of the node_ functions from routerlist to nodelist
This commit is contained in:
Nick Mathewson
parent
d995dc8bac
commit
ba21ebc6d8
@ -5,14 +5,17 @@
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/* See LICENSE for licensing information */
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#include "or.h"
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#include "address.h"
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#include "config.h"
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#include "dirserv.h"
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#include "geoip.h"
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#include "microdesc.h"
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#include "networkstatus.h"
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#include "nodelist.h"
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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 <string.h>
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@ -905,3 +908,243 @@ node_get_pref_ipv6_orport(const node_t *node, tor_addr_port_t *ap_out)
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}
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}
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/** Refresh the country code of <b>ri</b>. This function MUST be called on
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* each router when the GeoIP database is reloaded, and on all new routers. */
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void
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node_set_country(node_t *node)
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{
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if (node->rs)
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node->country = geoip_get_country_by_ip(node->rs->addr);
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else if (node->ri)
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node->country = geoip_get_country_by_ip(node->ri->addr);
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else
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node->country = -1;
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}
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/** Set the country code of all routers in the routerlist. */
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void
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nodelist_refresh_countries(void)
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{
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smartlist_t *nodes = nodelist_get_list();
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SMARTLIST_FOREACH(nodes, node_t *, node,
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node_set_country(node));
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}
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/** Return true iff router1 and router2 have similar enough network addresses
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* that we should treat them as being in the same family */
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static INLINE int
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addrs_in_same_network_family(const tor_addr_t *a1,
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const tor_addr_t *a2)
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{
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return 0 == tor_addr_compare_masked(a1, a2, 16, CMP_SEMANTIC);
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}
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/** Return true if <b>node</b>'s nickname matches <b>nickname</b>
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* (case-insensitive), or if <b>node's</b> identity key digest
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* matches a hexadecimal value stored in <b>nickname</b>. Return
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* false otherwise. */
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static int
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node_nickname_matches(const node_t *node, const char *nickname)
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{
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const char *n = node_get_nickname(node);
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if (n && nickname[0]!='$' && !strcasecmp(n, nickname))
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return 1;
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return hex_digest_nickname_matches(nickname,
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node->identity,
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n,
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node_is_named(node));
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}
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/** Return true iff <b>node</b> is named by some nickname in <b>lst</b>. */
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static INLINE int
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node_in_nickname_smartlist(const smartlist_t *lst, const node_t *node)
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{
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if (!lst) return 0;
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SMARTLIST_FOREACH(lst, const char *, name, {
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if (node_nickname_matches(node, name))
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return 1;
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});
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return 0;
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}
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/** Return true iff r1 and r2 are in the same family, but not the same
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* router. */
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int
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nodes_in_same_family(const node_t *node1, const node_t *node2)
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{
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const or_options_t *options = get_options();
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/* Are they in the same family because of their addresses? */
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if (options->EnforceDistinctSubnets) {
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tor_addr_t a1, a2;
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node_get_addr(node1, &a1);
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node_get_addr(node2, &a2);
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if (addrs_in_same_network_family(&a1, &a2))
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return 1;
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}
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/* Are they in the same family because the agree they are? */
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{
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const smartlist_t *f1, *f2;
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f1 = node_get_declared_family(node1);
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f2 = node_get_declared_family(node2);
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if (f1 && f2 &&
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node_in_nickname_smartlist(f1, node2) &&
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node_in_nickname_smartlist(f2, node1))
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return 1;
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}
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/* Are they in the same option because the user says they are? */
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if (options->NodeFamilySets) {
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SMARTLIST_FOREACH(options->NodeFamilySets, const routerset_t *, rs, {
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if (routerset_contains_node(rs, node1) &&
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routerset_contains_node(rs, node2))
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return 1;
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});
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}
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return 0;
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}
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/**
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* Add all the family of <b>node</b>, including <b>node</b> itself, to
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* the smartlist <b>sl</b>.
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*
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* This is used to make sure we don't pick siblings in a single path, or
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* pick more than one relay from a family for our entry guard list.
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* Note that a node may be added to <b>sl</b> more than once if it is
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* part of <b>node</b>'s family for more than one reason.
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*/
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void
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nodelist_add_node_and_family(smartlist_t *sl, const node_t *node)
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{
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const smartlist_t *all_nodes = nodelist_get_list();
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const smartlist_t *declared_family;
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const or_options_t *options = get_options();
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tor_assert(node);
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declared_family = node_get_declared_family(node);
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/* Let's make sure that we have the node itself, if it's a real node. */
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{
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const node_t *real_node = node_get_by_id(node->identity);
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if (real_node)
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smartlist_add(sl, (node_t*)real_node);
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}
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/* First, add any nodes with similar network addresses. */
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if (options->EnforceDistinctSubnets) {
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tor_addr_t node_addr;
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node_get_addr(node, &node_addr);
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SMARTLIST_FOREACH_BEGIN(all_nodes, const node_t *, node2) {
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tor_addr_t a;
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node_get_addr(node2, &a);
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if (addrs_in_same_network_family(&a, &node_addr))
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smartlist_add(sl, (void*)node2);
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} SMARTLIST_FOREACH_END(node2);
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}
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/* Now, add all nodes in the declared_family of this node, if they
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* also declare this node to be in their family. */
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if (declared_family) {
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/* Add every r such that router declares familyness with node, and node
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* declares familyhood with router. */
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SMARTLIST_FOREACH_BEGIN(declared_family, const char *, name) {
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const node_t *node2;
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const smartlist_t *family2;
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if (!(node2 = node_get_by_nickname(name, 0)))
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continue;
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if (!(family2 = node_get_declared_family(node2)))
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continue;
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SMARTLIST_FOREACH_BEGIN(family2, const char *, name2) {
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if (node_nickname_matches(node, name2)) {
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smartlist_add(sl, (void*)node2);
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break;
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}
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} SMARTLIST_FOREACH_END(name2);
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} SMARTLIST_FOREACH_END(name);
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}
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/* If the user declared any families locally, honor those too. */
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if (options->NodeFamilySets) {
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SMARTLIST_FOREACH(options->NodeFamilySets, const routerset_t *, rs, {
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if (routerset_contains_node(rs, node)) {
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routerset_get_all_nodes(sl, rs, NULL, 0);
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}
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});
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}
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}
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/** Find a router that's up, that has this IP address, and
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* that allows exit to this address:port, or return NULL if there
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* isn't a good one.
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* Don't exit enclave to excluded relays -- it wouldn't actually
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* hurt anything, but this way there are fewer confused users.
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*/
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const node_t *
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router_find_exact_exit_enclave(const char *address, uint16_t port)
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{/*XXXX MOVE*/
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uint32_t addr;
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struct in_addr in;
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tor_addr_t a;
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const or_options_t *options = get_options();
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if (!tor_inet_aton(address, &in))
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return NULL; /* it's not an IP already */
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addr = ntohl(in.s_addr);
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tor_addr_from_ipv4h(&a, addr);
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SMARTLIST_FOREACH(nodelist_get_list(), const node_t *, node, {
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if (node_get_addr_ipv4h(node) == addr &&
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node->is_running &&
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compare_tor_addr_to_node_policy(&a, port, node) ==
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ADDR_POLICY_ACCEPTED &&
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!routerset_contains_node(options->_ExcludeExitNodesUnion, node))
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return node;
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});
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return NULL;
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}
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/** Return 1 if <b>router</b> is not suitable for these parameters, else 0.
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* If <b>need_uptime</b> is non-zero, we require a minimum uptime.
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* If <b>need_capacity</b> is non-zero, we require a minimum advertised
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* bandwidth.
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* If <b>need_guard</b>, we require that the router is a possible entry guard.
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*/
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int
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node_is_unreliable(const node_t *node, int need_uptime,
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int need_capacity, int need_guard)
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{
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if (need_uptime && !node->is_stable)
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return 1;
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if (need_capacity && !node->is_fast)
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return 1;
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if (need_guard && !node->is_possible_guard)
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return 1;
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return 0;
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}
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/** Return 1 if all running sufficiently-stable routers we can use will reject
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* addr:port, return 0 if any might accept it. */
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int
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router_exit_policy_all_nodes_reject(const tor_addr_t *addr, uint16_t port,
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int need_uptime)
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{
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addr_policy_result_t r;
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SMARTLIST_FOREACH_BEGIN(nodelist_get_list(), const node_t *, node) {
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if (node->is_running &&
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!node_is_unreliable(node, need_uptime, 0, 0)) {
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r = compare_tor_addr_to_node_policy(addr, port, node);
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if (r != ADDR_POLICY_REJECTED && r != ADDR_POLICY_PROBABLY_REJECTED)
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return 0; /* this one could be ok. good enough. */
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}
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} SMARTLIST_FOREACH_END(node);
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return 1; /* all will reject. */
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}
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@ -61,11 +61,17 @@ smartlist_t *nodelist_get_list(void);
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void node_get_addr(const node_t *node, tor_addr_t *addr_out);
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#define node_get_addr_ipv4h(n) node_get_prim_addr_ipv4h((n))
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/* XXXX These need to move out of routerlist.c */
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void nodelist_refresh_countries(void);
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void node_set_country(node_t *node);
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void nodelist_add_node_and_family(smartlist_t *nodes, const node_t *node);
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int nodes_in_same_family(const node_t *node1, const node_t *node2);
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const node_t *router_find_exact_exit_enclave(const char *address,
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uint16_t port);
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int node_is_unreliable(const node_t *router, int need_uptime,
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int need_capacity, int need_guard);
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int router_exit_policy_all_nodes_reject(const tor_addr_t *addr, uint16_t port,
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int need_uptime);
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#endif
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@ -48,8 +48,6 @@ static const routerstatus_t *router_pick_trusteddirserver_impl(
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static void mark_all_trusteddirservers_up(void);
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static int router_nickname_matches(const routerinfo_t *router,
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const char *nickname);
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static int node_nickname_matches(const node_t *router,
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const char *nickname);
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static void trusted_dir_server_free(trusted_dir_server_t *ds);
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static int signed_desc_digest_is_recognized(signed_descriptor_t *desc);
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static void update_router_have_minimum_dir_info(void);
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@ -1353,88 +1351,6 @@ router_reset_status_download_failures(void)
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mark_all_trusteddirservers_up();
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}
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/** Return true iff router1 and router2 have similar enough network addresses
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* that we should treat them as being in the same family */
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static INLINE int
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addrs_in_same_network_family(const tor_addr_t *a1,
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const tor_addr_t *a2)
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{
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/* XXXX MOVE ? */
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return 0 == tor_addr_compare_masked(a1, a2, 16, CMP_SEMANTIC);
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}
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/**
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* Add all the family of <b>node</b>, including <b>node</b> itself, to
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* the smartlist <b>sl</b>.
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*
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* This is used to make sure we don't pick siblings in a single path, or
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* pick more than one relay from a family for our entry guard list.
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* Note that a node may be added to <b>sl</b> more than once if it is
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* part of <b>node</b>'s family for more than one reason.
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*/
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void
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nodelist_add_node_and_family(smartlist_t *sl, const node_t *node)
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{
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/* XXXX MOVE */
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const smartlist_t *all_nodes = nodelist_get_list();
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const smartlist_t *declared_family;
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const or_options_t *options = get_options();
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tor_assert(node);
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declared_family = node_get_declared_family(node);
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/* Let's make sure that we have the node itself, if it's a real node. */
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{
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const node_t *real_node = node_get_by_id(node->identity);
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if (real_node)
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smartlist_add(sl, (node_t*)real_node);
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}
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/* First, add any nodes with similar network addresses. */
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if (options->EnforceDistinctSubnets) {
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tor_addr_t node_addr;
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node_get_addr(node, &node_addr);
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SMARTLIST_FOREACH_BEGIN(all_nodes, const node_t *, node2) {
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tor_addr_t a;
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node_get_addr(node2, &a);
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if (addrs_in_same_network_family(&a, &node_addr))
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smartlist_add(sl, (void*)node2);
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} SMARTLIST_FOREACH_END(node2);
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}
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/* Now, add all nodes in the declared_family of this node, if they
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* also declare this node to be in their family. */
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if (declared_family) {
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/* Add every r such that router declares familyness with node, and node
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* declares familyhood with router. */
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SMARTLIST_FOREACH_BEGIN(declared_family, const char *, name) {
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const node_t *node2;
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const smartlist_t *family2;
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if (!(node2 = node_get_by_nickname(name, 0)))
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continue;
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if (!(family2 = node_get_declared_family(node2)))
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continue;
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SMARTLIST_FOREACH_BEGIN(family2, const char *, name2) {
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if (node_nickname_matches(node, name2)) {
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smartlist_add(sl, (void*)node2);
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break;
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}
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} SMARTLIST_FOREACH_END(name2);
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} SMARTLIST_FOREACH_END(name);
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}
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/* If the user declared any families locally, honor those too. */
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if (options->NodeFamilySets) {
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SMARTLIST_FOREACH(options->NodeFamilySets, const routerset_t *, rs, {
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if (routerset_contains_node(rs, node)) {
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routerset_get_all_nodes(sl, rs, NULL, 0);
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}
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});
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}
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}
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/** Given a <b>router</b>, add every node_t in its family (including the
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* node itself!) to <b>sl</b>.
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*
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@ -1456,59 +1372,6 @@ routerlist_add_node_and_family(smartlist_t *sl, const routerinfo_t *router)
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nodelist_add_node_and_family(sl, node);
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}
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/** Return true iff <b>node</b> is named by some nickname in <b>lst</b>. */
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static INLINE int
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node_in_nickname_smartlist(const smartlist_t *lst, const node_t *node)
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{
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/* XXXX MOVE */
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if (!lst) return 0;
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SMARTLIST_FOREACH(lst, const char *, name, {
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if (node_nickname_matches(node, name))
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return 1;
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});
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return 0;
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}
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/** Return true iff r1 and r2 are in the same family, but not the same
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* router. */
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int
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nodes_in_same_family(const node_t *node1, const node_t *node2)
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{
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/* XXXX MOVE */
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const or_options_t *options = get_options();
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/* Are they in the same family because of their addresses? */
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if (options->EnforceDistinctSubnets) {
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tor_addr_t a1, a2;
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node_get_addr(node1, &a1);
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node_get_addr(node2, &a2);
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if (addrs_in_same_network_family(&a1, &a2))
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return 1;
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}
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/* Are they in the same family because the agree they are? */
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{
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const smartlist_t *f1, *f2;
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f1 = node_get_declared_family(node1);
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f2 = node_get_declared_family(node2);
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if (f1 && f2 &&
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node_in_nickname_smartlist(f1, node2) &&
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node_in_nickname_smartlist(f2, node1))
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return 1;
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}
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/* Are they in the same option because the user says they are? */
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if (options->NodeFamilySets) {
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SMARTLIST_FOREACH(options->NodeFamilySets, const routerset_t *, rs, {
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if (routerset_contains_node(rs, node1) &&
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routerset_contains_node(rs, node2))
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return 1;
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});
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}
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return 0;
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}
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/** Return 1 iff any member of the (possibly NULL) comma-separated list
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* <b>list</b> is an acceptable nickname or hexdigest for <b>router</b>. Else
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* return 0.
|
||||
@ -1572,56 +1435,6 @@ routerlist_find_my_routerinfo(void)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/** Find a router that's up, that has this IP address, and
|
||||
* that allows exit to this address:port, or return NULL if there
|
||||
* isn't a good one.
|
||||
* Don't exit enclave to excluded relays -- it wouldn't actually
|
||||
* hurt anything, but this way there are fewer confused users.
|
||||
*/
|
||||
const node_t *
|
||||
router_find_exact_exit_enclave(const char *address, uint16_t port)
|
||||
{/*XXXX MOVE*/
|
||||
uint32_t addr;
|
||||
struct in_addr in;
|
||||
tor_addr_t a;
|
||||
const or_options_t *options = get_options();
|
||||
|
||||
if (!tor_inet_aton(address, &in))
|
||||
return NULL; /* it's not an IP already */
|
||||
addr = ntohl(in.s_addr);
|
||||
|
||||
tor_addr_from_ipv4h(&a, addr);
|
||||
|
||||
SMARTLIST_FOREACH(nodelist_get_list(), const node_t *, node, {
|
||||
if (node_get_addr_ipv4h(node) == addr &&
|
||||
node->is_running &&
|
||||
compare_tor_addr_to_node_policy(&a, port, node) ==
|
||||
ADDR_POLICY_ACCEPTED &&
|
||||
!routerset_contains_node(options->_ExcludeExitNodesUnion, node))
|
||||
return node;
|
||||
});
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/** Return 1 if <b>router</b> is not suitable for these parameters, else 0.
|
||||
* If <b>need_uptime</b> is non-zero, we require a minimum uptime.
|
||||
* If <b>need_capacity</b> is non-zero, we require a minimum advertised
|
||||
* bandwidth.
|
||||
* If <b>need_guard</b>, we require that the router is a possible entry guard.
|
||||
*/
|
||||
int
|
||||
node_is_unreliable(const node_t *node, int need_uptime,
|
||||
int need_capacity, int need_guard)
|
||||
{
|
||||
if (need_uptime && !node->is_stable)
|
||||
return 1;
|
||||
if (need_capacity && !node->is_fast)
|
||||
return 1;
|
||||
if (need_guard && !node->is_possible_guard)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/** Return the smaller of the router's configured BandwidthRate
|
||||
* and its advertised capacity. */
|
||||
uint32_t
|
||||
@ -2302,7 +2115,7 @@ hex_digest_nickname_decode(const char *hexdigest,
|
||||
* combination of a router, encoded in hexadecimal, matches <b>hexdigest</b>
|
||||
* (which is optionally prefixed with a single dollar sign). Return false if
|
||||
* <b>hexdigest</b> is malformed, or it doesn't match. */
|
||||
static int
|
||||
int
|
||||
hex_digest_nickname_matches(const char *hexdigest, const char *identity_digest,
|
||||
const char *nickname, int is_named)
|
||||
{
|
||||
@ -2362,22 +2175,6 @@ router_nickname_matches(const routerinfo_t *router, const char *nickname)
|
||||
return router_hex_digest_matches(router, nickname);
|
||||
}
|
||||
|
||||
/** Return true if <b>node</b>'s nickname matches <b>nickname</b>
|
||||
* (case-insensitive), or if <b>node's</b> identity key digest
|
||||
* matches a hexadecimal value stored in <b>nickname</b>. Return
|
||||
* false otherwise. */
|
||||
static int
|
||||
node_nickname_matches(const node_t *node, const char *nickname)
|
||||
{
|
||||
const char *n = node_get_nickname(node);
|
||||
if (n && nickname[0]!='$' && !strcasecmp(n, nickname))
|
||||
return 1;
|
||||
return hex_digest_nickname_matches(nickname,
|
||||
node->identity,
|
||||
n,
|
||||
node_is_named(node));
|
||||
}
|
||||
|
||||
/** Return the router in our routerlist whose (case-insensitive)
|
||||
* nickname or (case-sensitive) hexadecimal key digest is
|
||||
* <b>nickname</b>. Return NULL if no such router is known.
|
||||
@ -4062,27 +3859,6 @@ routerlist_retry_directory_downloads(time_t now)
|
||||
update_all_descriptor_downloads(now);
|
||||
}
|
||||
|
||||
/** Return 1 if all running sufficiently-stable routers we can use will reject
|
||||
* addr:port, return 0 if any might accept it. */
|
||||
int
|
||||
router_exit_policy_all_nodes_reject(const tor_addr_t *addr, uint16_t port,
|
||||
int need_uptime)
|
||||
{ /* XXXX MOVE */
|
||||
addr_policy_result_t r;
|
||||
|
||||
SMARTLIST_FOREACH_BEGIN(nodelist_get_list(), const node_t *, node) {
|
||||
if (node->is_running &&
|
||||
!node_is_unreliable(node, need_uptime, 0, 0)) {
|
||||
|
||||
r = compare_tor_addr_to_node_policy(addr, port, node);
|
||||
|
||||
if (r != ADDR_POLICY_REJECTED && r != ADDR_POLICY_PROBABLY_REJECTED)
|
||||
return 0; /* this one could be ok. good enough. */
|
||||
}
|
||||
} SMARTLIST_FOREACH_END(node);
|
||||
return 1; /* all will reject. */
|
||||
}
|
||||
|
||||
/** Return true iff <b>router</b> does not permit exit streams.
|
||||
*/
|
||||
int
|
||||
@ -5432,28 +5208,6 @@ refresh_all_country_info(void)
|
||||
nodelist_refresh_countries();
|
||||
}
|
||||
|
||||
/** Refresh the country code of <b>ri</b>. This function MUST be called on
|
||||
* each router when the GeoIP database is reloaded, and on all new routers. */
|
||||
void
|
||||
node_set_country(node_t *node)
|
||||
{
|
||||
if (node->rs)
|
||||
node->country = geoip_get_country_by_ip(node->rs->addr);
|
||||
else if (node->ri)
|
||||
node->country = geoip_get_country_by_ip(node->ri->addr);
|
||||
else
|
||||
node->country = -1;
|
||||
}
|
||||
|
||||
/** Set the country code of all routers in the routerlist. */
|
||||
void
|
||||
nodelist_refresh_countries(void) /* MOVE */
|
||||
{
|
||||
smartlist_t *nodes = nodelist_get_list();
|
||||
SMARTLIST_FOREACH(nodes, node_t *, node,
|
||||
node_set_country(node));
|
||||
}
|
||||
|
||||
/** Determine the routers that are responsible for <b>id</b> (binary) and
|
||||
* add pointers to those routers' routerstatus_t to <b>responsible_dirs</b>.
|
||||
* Return -1 if we're returning an empty smartlist, else return 0.
|
||||
|
||||
@ -39,10 +39,6 @@ void router_reset_status_download_failures(void);
|
||||
int routers_have_same_or_addrs(const routerinfo_t *r1, const routerinfo_t *r2);
|
||||
int router_nickname_is_in_list(const routerinfo_t *router, const char *list);
|
||||
const routerinfo_t *routerlist_find_my_routerinfo(void);
|
||||
const node_t *router_find_exact_exit_enclave(const char *address,
|
||||
uint16_t port);
|
||||
int node_is_unreliable(const node_t *router, int need_uptime,
|
||||
int need_capacity, int need_guard);
|
||||
uint32_t router_get_advertised_bandwidth(const routerinfo_t *router);
|
||||
uint32_t router_get_advertised_bandwidth_capped(const routerinfo_t *router);
|
||||
|
||||
@ -133,8 +129,6 @@ void router_load_extrainfo_from_string(const char *s, const char *eos,
|
||||
int descriptor_digests);
|
||||
|
||||
void routerlist_retry_directory_downloads(time_t now);
|
||||
int router_exit_policy_all_nodes_reject(const tor_addr_t *addr, uint16_t port,
|
||||
int need_uptime);
|
||||
|
||||
int router_exit_policy_rejects_all(const routerinfo_t *router);
|
||||
trusted_dir_server_t *add_trusted_dir_server(const char *nickname,
|
||||
@ -183,6 +177,9 @@ int hex_digest_nickname_decode(const char *hexdigest,
|
||||
char *digest_out,
|
||||
char *nickname_qualifier_out,
|
||||
char *nickname_out);
|
||||
int hex_digest_nickname_matches(const char *hexdigest,
|
||||
const char *identity_digest,
|
||||
const char *nickname, int is_named);
|
||||
|
||||
#ifdef ROUTERLIST_PRIVATE
|
||||
/** Helper type for choosing routers by bandwidth: contains a union of
|
||||
|
||||
Loading…
Reference in New Issue
Block a user