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Intoduce unittest for skipping outdated dirservers.
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9fbc835f10
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7e52947d57
@ -1012,48 +1012,6 @@ directory_must_use_begindir(const or_options_t *options)
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return !public_server_mode(options);
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}
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struct directory_request_t {
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/**
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* These fields specify which directory we're contacting. Routerstatus,
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* if present, overrides the other fields.
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*
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* @{ */
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tor_addr_port_t or_addr_port;
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tor_addr_port_t dir_addr_port;
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char digest[DIGEST_LEN];
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const routerstatus_t *routerstatus;
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/** @} */
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/** One of DIR_PURPOSE_* other than DIR_PURPOSE_SERVER. Describes what
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* kind of operation we'll be doing (upload/download), and of what kind
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* of document. */
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uint8_t dir_purpose;
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/** One of ROUTER_PURPOSE_*; used for uploads and downloads of routerinfo
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* and extrainfo docs. */
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uint8_t router_purpose;
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/** Enum: determines whether to anonymize, and whether to use dirport or
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* orport. */
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dir_indirection_t indirection;
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/** Alias to the variable part of the URL for this request */
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const char *resource;
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/** Alias to the payload to upload (if any) */
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const char *payload;
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/** Number of bytes to upload from payload</b> */
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size_t payload_len;
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/** Value to send in an if-modified-since header, or 0 for none. */
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time_t if_modified_since;
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/** Hidden-service-specific information v2. */
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const rend_data_t *rend_query;
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/** Extra headers to append to the request */
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config_line_t *additional_headers;
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/** Hidden-service-specific information for v3+. */
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const hs_ident_dir_conn_t *hs_ident;
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/** Used internally to directory.c: gets informed when the attempt to
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* connect to the directory succeeds or fails, if that attempt bears on the
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* directory's usability as a directory guard. */
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circuit_guard_state_t *guard_state;
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};
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/** Evaluate the situation and decide if we should use an encrypted
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* "begindir-style" connection for this directory request.
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* 0) If there is no DirPort, yes.
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@ -183,6 +183,48 @@ typedef struct response_handler_args_t {
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const char *headers;
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} response_handler_args_t;
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struct directory_request_t {
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/**
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* These fields specify which directory we're contacting. Routerstatus,
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* if present, overrides the other fields.
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*
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* @{ */
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tor_addr_port_t or_addr_port;
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tor_addr_port_t dir_addr_port;
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char digest[DIGEST_LEN];
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const routerstatus_t *routerstatus;
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/** @} */
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/** One of DIR_PURPOSE_* other than DIR_PURPOSE_SERVER. Describes what
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* kind of operation we'll be doing (upload/download), and of what kind
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* of document. */
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uint8_t dir_purpose;
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/** One of ROUTER_PURPOSE_*; used for uploads and downloads of routerinfo
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* and extrainfo docs. */
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uint8_t router_purpose;
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/** Enum: determines whether to anonymize, and whether to use dirport or
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* orport. */
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dir_indirection_t indirection;
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/** Alias to the variable part of the URL for this request */
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const char *resource;
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/** Alias to the payload to upload (if any) */
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const char *payload;
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/** Number of bytes to upload from payload</b> */
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size_t payload_len;
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/** Value to send in an if-modified-since header, or 0 for none. */
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time_t if_modified_since;
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/** Hidden-service-specific information v2. */
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const rend_data_t *rend_query;
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/** Extra headers to append to the request */
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config_line_t *additional_headers;
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/** Hidden-service-specific information for v3+. */
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const hs_ident_dir_conn_t *hs_ident;
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/** Used internally to directory.c: gets informed when the attempt to
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* connect to the directory succeeds or fails, if that attempt bears on the
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* directory's usability as a directory guard. */
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struct circuit_guard_state_t *guard_state;
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};
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struct get_handler_args_t;
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STATIC int handle_get_hs_descriptor_v3(dir_connection_t *conn,
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const struct get_handler_args_t *args);
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@ -7,6 +7,7 @@
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#define STATEFILE_PRIVATE
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#define ENTRYNODES_PRIVATE
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#define ROUTERLIST_PRIVATE
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#define DIRECTORY_PRIVATE
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#include "or.h"
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#include "test.h"
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@ -15,6 +16,7 @@
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#include "circuitlist.h"
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#include "config.h"
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#include "confparse.h"
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#include "directory.h"
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#include "entrynodes.h"
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#include "nodelist.h"
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#include "networkstatus.h"
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@ -129,6 +131,14 @@ big_fake_network_setup(const struct testcase_t *testcase)
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n->rs->has_bandwidth = 1;
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n->rs->bandwidth_kb = 30;
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/* Make a random nickname for each node */
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{
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char nickname_binary[8];
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crypto_rand(nickname_binary, sizeof(nickname_binary));
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base64_encode(n->rs->nickname, sizeof(n->rs->nickname),
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nickname_binary, sizeof(nickname_binary), 0);
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}
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/* Call half of the nodes a possible guard. */
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if (i % 2 == 0) {
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n->is_possible_guard = 1;
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@ -1800,14 +1810,14 @@ test_entry_guard_select_for_circuit_no_confirmed(void *arg)
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tt_ptr_op(g2, OP_EQ, g);
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/* But if we impose a restriction, we don't get the same guard */
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entry_guard_restriction_t rst;
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memset(&rst, 0, sizeof(rst));
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memcpy(rst.exclude_id, g->identity, DIGEST_LEN);
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g2 = select_entry_guard_for_circuit(gs, GUARD_USAGE_TRAFFIC, &rst, &state);
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entry_guard_restriction_t *rst;
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rst = guard_create_exit_restriction((uint8_t*)g->identity);
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g2 = select_entry_guard_for_circuit(gs, GUARD_USAGE_TRAFFIC, rst, &state);
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tt_ptr_op(g2, OP_NE, g);
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done:
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guard_selection_free(gs);
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entry_guard_restriction_free(rst);
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}
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static void
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@ -1817,6 +1827,7 @@ test_entry_guard_select_for_circuit_confirmed(void *arg)
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guards, we use a confirmed guard. */
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(void)arg;
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int i;
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entry_guard_restriction_t *rst = NULL;
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guard_selection_t *gs = guard_selection_new("default", GS_TYPE_NORMAL);
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const int N_CONFIRMED = 10;
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@ -1877,10 +1888,8 @@ test_entry_guard_select_for_circuit_confirmed(void *arg)
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get_options_mutable()->EnforceDistinctSubnets = 0;
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g = smartlist_get(gs->confirmed_entry_guards,
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smartlist_len(gs->primary_entry_guards)+2);
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entry_guard_restriction_t rst;
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memset(&rst, 0, sizeof(rst));
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memcpy(rst.exclude_id, g->identity, DIGEST_LEN);
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g2 = select_entry_guard_for_circuit(gs, GUARD_USAGE_TRAFFIC, &rst, &state);
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rst = guard_create_exit_restriction((uint8_t*)g->identity);
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g2 = select_entry_guard_for_circuit(gs, GUARD_USAGE_TRAFFIC, rst, &state);
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tt_ptr_op(g2, OP_NE, NULL);
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tt_ptr_op(g2, OP_NE, g);
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tt_int_op(g2->confirmed_idx, OP_EQ,
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@ -1906,13 +1915,13 @@ test_entry_guard_select_for_circuit_confirmed(void *arg)
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// Regression test for bug 22753/TROVE-2017-006.
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get_options_mutable()->EnforceDistinctSubnets = 1;
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g = smartlist_get(gs->confirmed_entry_guards, 0);
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memset(&rst, 0, sizeof(rst));
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memcpy(rst.exclude_id, g->identity, DIGEST_LEN);
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g2 = select_entry_guard_for_circuit(gs, GUARD_USAGE_TRAFFIC, &rst, &state);
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memcpy(rst->exclude_id, g->identity, DIGEST_LEN);
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g2 = select_entry_guard_for_circuit(gs, GUARD_USAGE_TRAFFIC, rst, &state);
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tt_ptr_op(g2, OP_EQ, NULL);
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done:
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guard_selection_free(gs);
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entry_guard_restriction_free(rst);
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}
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static void
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@ -2493,9 +2502,7 @@ test_entry_guard_upgrade_not_blocked_by_restricted_circ_complete(void *arg)
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/* Once more, let circ1 become complete. But this time, we'll claim
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* that circ2 was restricted to not use the same guard as circ1. */
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data->guard2_state->restrictions =
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tor_malloc_zero(sizeof(entry_guard_restriction_t));
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memcpy(data->guard2_state->restrictions->exclude_id,
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data->guard1->identity, DIGEST_LEN);
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guard_create_exit_restriction((uint8_t*)data->guard1->identity);
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smartlist_t *result = smartlist_new();
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int r;
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@ -2604,9 +2611,7 @@ test_entry_guard_upgrade_not_blocked_by_restricted_circ_pending(void *arg)
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}
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data->guard2_state->restrictions =
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tor_malloc_zero(sizeof(entry_guard_restriction_t));
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memcpy(data->guard2_state->restrictions->exclude_id,
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data->guard1->identity, DIGEST_LEN);
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guard_create_exit_restriction((uint8_t*)data->guard1->identity);
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smartlist_t *result = smartlist_new();
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int r;
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@ -2674,6 +2679,112 @@ test_enty_guard_should_expire_waiting(void *arg)
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tor_free(fake_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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if (req->guard_state) {
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circuit_guard_state_free(req->guard_state);
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}
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}
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static networkstatus_t *mock_ns_val = NULL;
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static networkstatus_t *
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mock_ns_get_by_flavor(consensus_flavor_t f)
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{
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(void)f;
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return mock_ns_val;
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}
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/** Test that when we fetch microdescriptors we skip guards that have
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* previously failed to serve us needed microdescriptors. */
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static void
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test_entry_guard_outdated_dirserver_exclusion(void *arg)
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{
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int retval;
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response_handler_args_t *args = NULL;
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dir_connection_t *conn = NULL;
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(void) arg;
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/* Test prep: Make a new guard selection */
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guard_selection_t *gs = get_guard_selection_by_name("default",
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GS_TYPE_NORMAL, 1);
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/* ... we want to use entry guards */
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or_options_t *options = get_options_mutable();
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options->UseEntryGuards = 1;
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options->UseBridges = 0;
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/* ... prepare some md digests we want to download in the future */
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smartlist_t *digests = smartlist_new();
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const char *prose = "unhurried and wise, we perceive.";
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for (int i = 0; i < 20; i++) {
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smartlist_add(digests, (char*)prose);
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}
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/* ... now mock some functions */
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mock_ns_val = tor_malloc_zero(sizeof(networkstatus_t));
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MOCK(networkstatus_get_latest_consensus_by_flavor, mock_ns_get_by_flavor);
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MOCK(directory_initiate_request, mock_directory_initiate_request);
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/* Test logic:
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* 0. Create a proper guard set and primary guard list.
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* 1. Pretend to fail microdescriptor fetches from all the primary guards.
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* 2. Order another microdescriptor fetch and make sure that primary guards
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* get skipped since they failed previous fetches.
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*/
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{ /* Setup primary guard list */
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int i;
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entry_guards_update_primary(gs);
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for (i = 0; i < DFLT_N_PRIMARY_GUARDS; ++i) {
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entry_guard_t *guard = smartlist_get(gs->sampled_entry_guards, i);
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make_guard_confirmed(gs, guard);
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}
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entry_guards_update_primary(gs);
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}
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{
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/* Fail microdesc fetches with all the primary guards */
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args = tor_malloc_zero(sizeof(response_handler_args_t));
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args->status_code = 404;
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args->reason = NULL;
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args->body = NULL;
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args->body_len = 0;
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conn = tor_malloc_zero(sizeof(dir_connection_t));
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conn->requested_resource = tor_strdup("d/jlinblackorigami");
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conn->base_.purpose = DIR_PURPOSE_FETCH_MICRODESC;
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/* Pretend to fail fetches with all primary guards */
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SMARTLIST_FOREACH_BEGIN(gs->primary_entry_guards,const entry_guard_t *,g) {
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memcpy(conn->identity_digest, g->identity, DIGEST_LEN);
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retval = handle_response_fetch_microdesc(conn, args);
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tt_int_op(retval, OP_EQ, 0);
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} SMARTLIST_FOREACH_END(g);
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}
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{
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/* Now order the final md download */
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setup_full_capture_of_logs(LOG_INFO);
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initiate_descriptor_downloads(NULL, DIR_PURPOSE_FETCH_MICRODESC,
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digests, 3, 7, 0);
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/* ... and check that because we failed to fetch microdescs from all our
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* primaries, we didnt end up selecting a primary for fetching dir info */
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expect_log_msg_containing("No primary or confirmed guards available.");
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teardown_capture_of_logs();
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}
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done:
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smartlist_free(digests);
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tor_free(args);
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if (conn) {
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tor_free(conn->requested_resource);
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tor_free(conn);
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}
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}
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static const struct testcase_setup_t big_fake_network = {
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big_fake_network_setup, big_fake_network_cleanup
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};
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@ -2734,6 +2845,7 @@ struct testcase_t entrynodes_tests[] = {
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BFN_TEST(select_for_circuit_highlevel_primary_retry),
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BFN_TEST(select_and_cancel),
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BFN_TEST(drop_guards),
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BFN_TEST(outdated_dirserver_exclusion),
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UPGRADE_TEST(upgrade_a_circuit, "c1-done c2-done"),
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UPGRADE_TEST(upgrade_blocked_by_live_primary_guards, "c1-done c2-done"),
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