/* Copyright (c) 2001-2004, Roger Dingledine. * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson. * Copyright (c) 2007-2020, The Tor Project, Inc. */ /* See LICENSE for licensing information */ #include "core/or/or.h" #include "lib/buf/buffers.h" #include "app/config/config.h" #include "core/mainloop/connection.h" #include "core/proto/proto_socks.h" #include "test/test.h" #include "test/log_test_helpers.h" #include "core/or/socks_request_st.h" #include "lib/net/socks5_status.h" typedef struct socks_test_data_t { socks_request_t *req; buf_t *buf; } socks_test_data_t; static void * socks_test_setup(const struct testcase_t *testcase) { socks_test_data_t *data = tor_malloc(sizeof(socks_test_data_t)); (void)testcase; data->buf = buf_new_with_capacity(256); data->req = socks_request_new(); config_register_addressmaps(get_options()); return data; } static int socks_test_cleanup(const struct testcase_t *testcase, void *ptr) { socks_test_data_t *data = ptr; (void)testcase; buf_free(data->buf); socks_request_free(data->req); tor_free(data); return 1; } static const struct testcase_setup_t socks_setup = { socks_test_setup, socks_test_cleanup }; #define SOCKS_TEST_INIT() \ socks_test_data_t *testdata = ptr; \ buf_t *buf = testdata->buf; \ socks_request_t *socks = testdata->req; #define ADD_DATA(buf, s) \ buf_add(buf, s, sizeof(s)-1) static void socks_request_clear(socks_request_t *socks) { tor_free(socks->username); tor_free(socks->password); memset(socks, 0, sizeof(socks_request_t)); } /** Perform unsupported SOCKS 4 commands */ static void test_socks_4_unsupported_commands(void *ptr) { SOCKS_TEST_INIT(); /* SOCKS 4 Send BIND [02] to IP address 2.2.2.2:4369 */ ADD_DATA(buf, "\x04\x02\x11\x11\x02\x02\x02\x02\x00"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, -1); tt_int_op(4,OP_EQ, socks->socks_version); tt_int_op(0,OP_EQ, socks->replylen); /* XXX: shouldn't tor reply? */ done: ; } /** Perform supported SOCKS 4 commands */ static void test_socks_4_supported_commands(void *ptr) { SOCKS_TEST_INIT(); tt_int_op(0,OP_EQ, buf_datalen(buf)); /* SOCKS 4 Send CONNECT [01] to IP address 2.2.2.3:4370 */ ADD_DATA(buf, "\x04\x01\x11\x12\x02\x02\x02\x03\x00"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, 1); tt_int_op(4,OP_EQ, socks->socks_version); tt_int_op(0,OP_EQ, socks->replylen); /* XXX: shouldn't tor reply? */ tt_int_op(SOCKS_COMMAND_CONNECT,OP_EQ, socks->command); tt_str_op("2.2.2.3",OP_EQ, socks->address); tt_int_op(4370,OP_EQ, socks->port); tt_assert(socks->got_auth == 0); tt_assert(! socks->username); tt_int_op(0,OP_EQ, buf_datalen(buf)); socks_request_clear(socks); /* SOCKS 4 Send CONNECT [01] to IP address 2.2.2.4:4369 with userid*/ ADD_DATA(buf, "\x04\x01\x11\x12\x02\x02\x02\x04me\x00"); tt_int_op(fetch_from_buf_socks(buf, socks, 1, 0), OP_EQ, 1); tt_int_op(4,OP_EQ, socks->socks_version); tt_int_op(0,OP_EQ, socks->replylen); /* XXX: shouldn't tor reply? */ tt_int_op(SOCKS_COMMAND_CONNECT,OP_EQ, socks->command); tt_str_op("2.2.2.4",OP_EQ, socks->address); tt_int_op(4370,OP_EQ, socks->port); tt_assert(socks->got_auth == 1); tt_assert(socks->username); tt_int_op(2,OP_EQ, socks->usernamelen); tt_mem_op("me",OP_EQ, socks->username, 2); tt_int_op(0,OP_EQ, buf_datalen(buf)); socks_request_clear(socks); /* SOCKS 4a Send RESOLVE [F0] request for torproject.org */ ADD_DATA(buf, "\x04\xF0\x01\x01\x00\x00\x00\x02me\x00torproject.org\x00"); tt_int_op(fetch_from_buf_socks(buf, socks, 1, get_options()->SafeSocks), OP_EQ, 1); tt_int_op(4,OP_EQ, socks->socks_version); tt_int_op(0,OP_EQ, socks->replylen); /* XXX: shouldn't tor reply? */ tt_str_op("torproject.org",OP_EQ, socks->address); tt_int_op(0,OP_EQ, buf_datalen(buf)); done: ; } static void test_socks_4_bad_arguments(void *ptr) { SOCKS_TEST_INIT(); setup_capture_of_logs(LOG_DEBUG); /* Try with 0 IPv4 address */ ADD_DATA(buf, "\x04\x01\x00\x50\x00\x00\x00\x00\x00"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, -1); buf_clear(buf); expect_log_msg_containing("Port or DestIP is zero."); mock_clean_saved_logs(); /* Try with 0 port */ ADD_DATA(buf, "\x04\x01\x00\x00\x01\x02\x03\x04\x00"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, -1); buf_clear(buf); expect_log_msg_containing("Port or DestIP is zero."); mock_clean_saved_logs(); /* Try with 2000-byte username (!) */ ADD_DATA(buf, "\x04\x01\x00\x50\x01\x02\x03\x04"); int i; for (i = 0; i < 200; ++i) { ADD_DATA(buf, "1234567890"); } ADD_DATA(buf, "\x00"); tt_int_op(fetch_from_buf_socks(buf, socks, 1, 0), OP_EQ, -1); buf_clear(buf); expect_log_msg_containing("socks4: parsing failed - invalid request."); mock_clean_saved_logs(); /* Try with 2000-byte hostname */ ADD_DATA(buf, "\x04\x01\x00\x50\x00\x00\x00\x01\x00"); for (i = 0; i < 200; ++i) { ADD_DATA(buf, "1234567890"); } ADD_DATA(buf, "\x00"); { const char *p; size_t s; buf_pullup(buf, 9999, &p, &s); } tt_int_op(fetch_from_buf_socks(buf, socks, 1, 0), OP_EQ, -1); buf_clear(buf); expect_log_msg_containing("Destaddr too long. Rejecting."); mock_clean_saved_logs(); /* Try with 2000-byte hostname, not terminated. */ ADD_DATA(buf, "\x04\x01\x00\x50\x00\x00\x00\x01\x00"); for (i = 0; i < 200; ++i) { ADD_DATA(buf, "1234567890"); } tt_int_op(fetch_from_buf_socks(buf, socks, 1, 0), OP_EQ, -1); buf_clear(buf); expect_log_msg_containing("parsing failed - invalid request."); mock_clean_saved_logs(); /* Socks4, bogus hostname */ ADD_DATA(buf, "\x04\x01\x00\x50\x00\x00\x00\x01\x00" "---\x00" ); tt_int_op(fetch_from_buf_socks(buf, socks, 1, 0), OP_EQ, -1); buf_clear(buf); expect_log_msg_containing("Your application (using socks4 to port 80) " "gave Tor a malformed hostname: "); mock_clean_saved_logs(); done: teardown_capture_of_logs(); } /** Perform unsupported SOCKS 5 commands */ static void test_socks_5_unsupported_commands(void *ptr) { SOCKS_TEST_INIT(); /* SOCKS 5 Send unsupported BIND [02] command */ ADD_DATA(buf, "\x05\x02\x00\x01"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks),OP_EQ, 0); tt_int_op(0,OP_EQ, buf_datalen(buf)); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); ADD_DATA(buf, "\x05\x02\x00\x01\x02\x02\x02\x01\x01\x01"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks),OP_EQ, -1); tt_int_op(5,OP_EQ,socks->socks_version); tt_int_op(10,OP_EQ,socks->replylen); tt_int_op(5,OP_EQ,socks->reply[0]); tt_int_op(SOCKS5_COMMAND_NOT_SUPPORTED,OP_EQ,socks->reply[1]); tt_int_op(1,OP_EQ,socks->reply[3]); buf_clear(buf); socks_request_clear(socks); /* SOCKS 5 Send unsupported UDP_ASSOCIATE [03] command */ ADD_DATA(buf, "\x05\x02\x00\x01"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks),OP_EQ, 0); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); ADD_DATA(buf, "\x05\x03\x00\x01\x02\x02\x02\x01\x01\x01"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks),OP_EQ, -1); tt_int_op(5,OP_EQ,socks->socks_version); tt_int_op(10,OP_EQ,socks->replylen); tt_int_op(5,OP_EQ,socks->reply[0]); tt_int_op(SOCKS5_COMMAND_NOT_SUPPORTED,OP_EQ,socks->reply[1]); tt_int_op(1,OP_EQ,socks->reply[3]); done: ; } /** Perform supported SOCKS 5 commands */ static void test_socks_5_supported_commands(void *ptr) { SOCKS_TEST_INIT(); /* SOCKS 5 Send CONNECT [01] to IP address 2.2.2.2:4369 */ ADD_DATA(buf, "\x05\x01\x00"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks),OP_EQ, 0); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); ADD_DATA(buf, "\x05\x01\x00\x01\x02\x02\x02\x02\x11\x11"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks),OP_EQ, 1); tt_str_op("2.2.2.2",OP_EQ, socks->address); tt_int_op(4369,OP_EQ, socks->port); tt_int_op(0,OP_EQ, buf_datalen(buf)); socks_request_clear(socks); /* SOCKS 5 Send CONNECT [01] to one of the ipv6 addresses for torproject.org:80 */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\x01\x00\x04" "\x20\x02\x41\xb8\x02\x02\x0d\xeb\x02\x13\x21\xff\xfe\x20\x14\x26" "\x00\x50"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks),OP_EQ, 1); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); tt_str_op("[2002:41b8:202:deb:213:21ff:fe20:1426]",OP_EQ, socks->address); tt_int_op(80,OP_EQ, socks->port); tt_int_op(0,OP_EQ, buf_datalen(buf)); socks_request_clear(socks); /* SOCKS 5 Send CONNECT [01] to FQDN torproject.org:4369 */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\x01\x00\x03\x0Etorproject.org\x11\x11"); tt_int_op(fetch_from_buf_socks(buf, socks, 1, get_options()->SafeSocks),OP_EQ, 1); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); tt_str_op("torproject.org",OP_EQ, socks->address); tt_int_op(4369,OP_EQ, socks->port); tt_int_op(0,OP_EQ, buf_datalen(buf)); socks_request_clear(socks); /* SOCKS 5 Send RESOLVE [F0] request for torproject.org:4369 */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\xF0\x00\x03\x0Etorproject.org\x01\x02"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, 1); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); tt_str_op("torproject.org",OP_EQ, socks->address); tt_int_op(0,OP_EQ, buf_datalen(buf)); socks_request_clear(socks); /* SOCKS 5 Should NOT reject RESOLVE [F0] request for IPv4 address * string if SafeSocks is enabled. */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\xF0\x00\x03\x07"); ADD_DATA(buf, "8.8.8.8"); ADD_DATA(buf, "\x11\x11"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, 1), OP_EQ, 1); tt_str_op("8.8.8.8", OP_EQ, socks->address); tt_int_op(4369, OP_EQ, socks->port); tt_int_op(0, OP_EQ, buf_datalen(buf)); socks_request_clear(socks); /* SOCKS 5 should NOT reject RESOLVE [F0] request for IPv6 address * string if SafeSocks is enabled. */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\xF0\x00\x03\x29"); ADD_DATA(buf, "[2001:0db8:85a3:0000:0000:8a2e:0370:7334]"); ADD_DATA(buf, "\x01\x02"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, 1), OP_EQ, 1); tt_str_op("[2001:0db8:85a3:0000:0000:8a2e:0370:7334]", OP_EQ, socks->address); tt_int_op(258, OP_EQ, socks->port); tt_int_op(0, OP_EQ, buf_datalen(buf)); socks_request_clear(socks); /* Also allow bracket-less form. */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\xF0\x00\x03\x27"); ADD_DATA(buf, "2001:0db8:85a3:0000:0000:8a2e:0370:7334"); ADD_DATA(buf, "\x01\x02"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, 1), OP_EQ, 1); tt_str_op("2001:0db8:85a3:0000:0000:8a2e:0370:7334", OP_EQ, socks->address); tt_int_op(258, OP_EQ, socks->port); tt_int_op(0, OP_EQ, buf_datalen(buf)); socks_request_clear(socks); /* SOCKS 5 Send RESOLVE_PTR [F1] for IP address 2.2.2.5 */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\xF1\x00\x01\x02\x02\x02\x05\x01\x03"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, 1); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); tt_str_op("2.2.2.5",OP_EQ, socks->address); tt_int_op(0,OP_EQ, buf_datalen(buf)); socks_request_clear(socks); /* SOCKS 5 Send RESOLVE_PTR [F1] for an IPv6 address */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\xF1\x00\x04" "\x20\x01\x0d\xb8\x85\xa3\x00\x00\x00\x00\x8a\x2e\x03\x70\x73\x34" "\x12\x34"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, 1); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); tt_str_op("[2001:db8:85a3::8a2e:370:7334]",OP_EQ, socks->address); tt_int_op(0,OP_EQ, buf_datalen(buf)); socks_request_clear(socks); /* SOCKS 5 Send RESOLVE_PTR [F1] for a an IPv6 address written as a * string with brackets */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\xF1\x00\x03\x1e"); ADD_DATA(buf, "[2001:db8:85a3::8a2e:370:7334]"); ADD_DATA(buf, "\x12\x34"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, 1); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); tt_str_op("[2001:db8:85a3::8a2e:370:7334]",OP_EQ, socks->address); tt_int_op(0,OP_EQ, buf_datalen(buf)); done: ; } /** Perform SOCKS 5 authentication */ static void test_socks_5_no_authenticate(void *ptr) { SOCKS_TEST_INIT(); /*SOCKS 5 No Authentication */ ADD_DATA(buf,"\x05\x01\x00"); tt_assert(!fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks)); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(SOCKS_NO_AUTH,OP_EQ, socks->reply[1]); tt_int_op(0,OP_EQ, buf_datalen(buf)); /*SOCKS 5 Send username/password anyway - pretend to be broken */ ADD_DATA(buf,"\x01\x02\x01\x01\x02\x01\x01"); tt_assert(!fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks)); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(1,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); tt_int_op(2,OP_EQ, socks->usernamelen); tt_int_op(2,OP_EQ, socks->passwordlen); tt_mem_op("\x01\x01",OP_EQ, socks->username, 2); tt_mem_op("\x01\x01",OP_EQ, socks->password, 2); done: ; } /** Perform SOCKS 5 authentication */ static void test_socks_5_authenticate(void *ptr) { SOCKS_TEST_INIT(); /* SOCKS 5 Negotiate username/password authentication */ ADD_DATA(buf, "\x05\x01\x02"); tt_assert(!fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks)); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(SOCKS_USER_PASS,OP_EQ, socks->reply[1]); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(0,OP_EQ, buf_datalen(buf)); /* SOCKS 5 Send username/password */ ADD_DATA(buf, "\x01\x02me\x08mypasswd"); tt_assert(!fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks)); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(1,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); tt_int_op(2,OP_EQ, socks->usernamelen); tt_int_op(8,OP_EQ, socks->passwordlen); tt_mem_op("me",OP_EQ, socks->username, 2); tt_mem_op("mypasswd",OP_EQ, socks->password, 8); done: ; } /** Perform SOCKS 5 authentication with empty username/password fields. * Technically this violates RfC 1929, but some client software will send * this kind of message to Tor. * */ static void test_socks_5_authenticate_empty_user_pass(void *ptr) { SOCKS_TEST_INIT(); /* SOCKS 5 Negotiate username/password authentication */ ADD_DATA(buf, "\x05\x01\x02"); tt_assert(!fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks)); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(SOCKS_USER_PASS,OP_EQ, socks->reply[1]); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(0,OP_EQ, buf_datalen(buf)); /* SOCKS 5 Send username/password auth message with empty user/pass fields */ ADD_DATA(buf, "\x01\x00\x00"); tt_assert(!fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks)); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(1,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); tt_int_op(0,OP_EQ, socks->usernamelen); tt_int_op(0,OP_EQ, socks->passwordlen); done: ; } /** Perform SOCKS 5 authentication and send data all in one go */ static void test_socks_5_authenticate_with_data(void *ptr) { SOCKS_TEST_INIT(); /* SOCKS 5 Negotiate username/password authentication */ ADD_DATA(buf, "\x05\x01\x02"); tt_assert(!fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks)); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(SOCKS_USER_PASS,OP_EQ, socks->reply[1]); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(0,OP_EQ, buf_datalen(buf)); /* SOCKS 5 Send username/password */ /* SOCKS 5 Send CONNECT [01] to IP address 2.2.2.2:4369 */ ADD_DATA(buf, "\x01\x02me\x03you\x05\x01\x00\x01\x02\x02\x02\x02\x11\x11"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, 1); tt_int_op(5,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(1,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); tt_str_op("2.2.2.2",OP_EQ, socks->address); tt_int_op(4369,OP_EQ, socks->port); tt_int_op(2,OP_EQ, socks->usernamelen); tt_int_op(3,OP_EQ, socks->passwordlen); tt_mem_op("me",OP_EQ, socks->username, 2); tt_mem_op("you",OP_EQ, socks->password, 3); done: ; } /** Try to negotiate an unsupported authentication type */ static void test_socks_5_auth_unsupported_type(void *ptr) { SOCKS_TEST_INIT(); /* None of these authentication types are recognized. */ ADD_DATA(buf, "\x05\x03\x99\x21\x10"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, -1); tt_int_op(0,OP_EQ, socks->socks_version); tt_int_op(2,OP_EQ, socks->replylen); tt_int_op(5,OP_EQ, socks->reply[0]); tt_int_op(0xff,OP_EQ, socks->reply[1]); done: ; } /** Try to negotiate an unsupported version of username/password auth. */ static void test_socks_5_auth_unsupported_version(void *ptr) { SOCKS_TEST_INIT(); /* Negotiate username/password */ ADD_DATA(buf, "\x05\x01\x02"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, 0); tt_int_op(0,OP_EQ, buf_datalen(buf)); /* buf should be drained */ /* Now, suggest an unrecognized username/password version */ ADD_DATA(buf, "\x02\x05" "hello" "\x05" "world"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, -1); done: ; } /** Perform SOCKS 5 authentication before method negotiated */ static void test_socks_5_auth_before_negotiation(void *ptr) { SOCKS_TEST_INIT(); /* SOCKS 5 Send username/password */ ADD_DATA(buf, "\x01\x02me\x02me"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks), OP_EQ, -1); tt_int_op(0,OP_EQ, socks->socks_version); tt_int_op(0,OP_EQ, socks->replylen); tt_int_op(0,OP_EQ, socks->reply[0]); tt_int_op(0,OP_EQ, socks->reply[1]); done: ; } /** Perform malformed SOCKS 5 commands */ static void test_socks_5_malformed_commands(void *ptr) { SOCKS_TEST_INIT(); /* XXX: Stringified address length > MAX_SOCKS_ADDR_LEN will never happen */ /** SOCKS 5 Send CONNECT [01] to IP address 2.2.2.2:4369, with SafeSocks set */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\x01\x00\x01\x02\x02\x02\x02\x11\x11"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, 1), OP_EQ, -1); tt_int_op(5,OP_EQ,socks->socks_version); tt_int_op(10,OP_EQ,socks->replylen); tt_int_op(5,OP_EQ,socks->reply[0]); tt_int_op(SOCKS5_NOT_ALLOWED,OP_EQ,socks->reply[1]); tt_int_op(1,OP_EQ,socks->reply[3]); buf_clear(buf); socks_request_clear(socks); /* SOCKS 5 Send RESOLVE_PTR [F1] for FQDN torproject.org */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\xF1\x00\x03\x0Etorproject.org\x11\x11"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks),OP_EQ, -1); tt_int_op(5,OP_EQ,socks->socks_version); tt_int_op(10,OP_EQ,socks->replylen); tt_int_op(5,OP_EQ,socks->reply[0]); tt_int_op(SOCKS5_ADDRESS_TYPE_NOT_SUPPORTED,OP_EQ,socks->reply[1]); tt_int_op(1,OP_EQ,socks->reply[3]); buf_clear(buf); socks_request_clear(socks); /* XXX: len + 1 > MAX_SOCKS_ADDR_LEN (FQDN request) will never happen */ /* SOCKS 5 Send CONNECT [01] to FQDN """"".com */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\x01\x00\x03\x09\"\"\"\"\".com\x11\x11"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks),OP_EQ, -1); tt_int_op(5,OP_EQ,socks->socks_version); tt_int_op(10,OP_EQ,socks->replylen); tt_int_op(5,OP_EQ,socks->reply[0]); tt_int_op(SOCKS5_GENERAL_ERROR,OP_EQ,socks->reply[1]); tt_int_op(1,OP_EQ,socks->reply[3]); buf_clear(buf); socks_request_clear(socks); /* SOCKS 5 Send CONNECT [01] to address type 0x23 */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\x01\x00\x23\x02\x02\x02\x02\x11\x11"); tt_int_op(fetch_from_buf_socks(buf, socks, get_options()->TestSocks, get_options()->SafeSocks),OP_EQ, -1); tt_int_op(5,OP_EQ,socks->socks_version); tt_int_op(10,OP_EQ,socks->replylen); tt_int_op(5,OP_EQ,socks->reply[0]); /* trunnel parsing will fail with -1 */ tt_int_op(SOCKS5_GENERAL_ERROR,OP_EQ,socks->reply[1]); tt_int_op(1,OP_EQ,socks->reply[3]); done: ; } static void test_socks_5_bad_arguments(void *ptr) { SOCKS_TEST_INIT(); setup_capture_of_logs(LOG_DEBUG); /* Socks5, bogus hostname */ ADD_DATA(buf, "\x05\x01\x00" "\x05\x01\x00\x03\x03" "---" "\x00\x50" ); tt_int_op(fetch_from_buf_socks(buf, socks, 1, 0), OP_EQ, -1); buf_clear(buf); expect_log_msg_containing("Your application (using socks5 to port 80) " "gave Tor a malformed hostname: "); mock_clean_saved_logs(); socks_request_clear(socks); done: teardown_capture_of_logs(); } /** check for correct behavior when the socks command has not arrived. */ static void test_socks_truncated(void *ptr) { const struct { enum { NONE, AUTH, ALL } setup; const char *body; size_t len; } commands[] = { /* SOCKS4 */ /* Connect, to an IP. */ { NONE, "\x04\x01\x05\x05\x01\x02\x03\x04\x00", 9}, /* Connect, to an IP, with authentication. */ { NONE, "\x04\x01\x05\x05\x01\x02\x03\x04hello\x00", 14}, /* SOCKS4A */ /* Connect, to a hostname */ { NONE, "\x04\x01\x09\x09\x00\x00\x00\x01\x00www.example.com\x00", 25}, /* Connect, to a hostname, with authentication */ { NONE, "\x04\x01\x09\x09\x00\x00\x00\x01hi\x00www.example.com\x00", 27}, /* SOCKS5 */ /* initial handshake */ { NONE, "\x05\x00", 2 }, /* no-auth handshake */ { NONE, "\x05\x03\x99\x21\x10", 5 }, /* SOCSK5, username-password, all empty. */ { AUTH, "\x01\x00\x00", 3 }, /* SOCSK5, username-password, 1 char each. */ { AUTH, "\x01\x01x\x01y", 5 }, /* SOCSK5, username-password, max length. */ { AUTH, "\x01\xff" "Ogni tempo ha il suo fascismo: se ne notano i segni premonitori " "dovunque la concentrazione di potere nega al cittadino la " "possibilit\xc3\xa0 e la capacit\xc3\xa0 di esprimere ed attuare la " "sua volont\xc3\xa0. A questo si arriva in molti modi, non " "necessariamente col terror" "\xff" "e dell'intimidazione poliziesca, ma anche negando o distorcendo " "l'informazione, inquinando la giustizia, paralizzando la scuola, " "diffondendo in molti modi sottili la nostalgia per un mondo in cui " "regnava sovrano l'ordine, ed in cui la sicurezza dei pochi " /* privilegiati riposava sul lavoro forzato e sul silenzio forzato dei molti. -- Primo Levi */ , 513 }, /* Socks5, IPv4 address */ { ALL, "\x05\x01\x00\x01\x01\x02\x03\x04\x20\x20", 10 }, /* Socks5, IPv6 address */ { ALL, "\x05\x01\x00\x04" "\x49\x20\x48\x41\x5a\x20\x45\x41\x53\x54\x45\x52\x20\x45\x47\x47" "\x20\x20", 22 }, /* Socks5, hostname, empty. */ { ALL, "\x05\x01\x00\x03" "\x00" "\x00\x50", 7 }, /* Socks5, hostname, moderate. */ { ALL, "\x05\x01\x00\x03" "\x11" "onion.example.com" "\x00\x50", 24 }, /* Socks5, hostname, maximum. */ { ALL, "\x05\x01\x00\x03" "\xff" "whatsoever.I.shall.see.or.hear.in.the.course.of.my.profession.as.well." "as.outside.my.profession.in.my.intercourse.with.men.if.it.be.what." "should.not.be.published.abroad.I.will.never.divulge.holding.such." "things.to.be.holy.secrets.x.hippocratic.oath.wikipedia" "\x00\x50", 262 }, }; unsigned i, j; SOCKS_TEST_INIT(); for (i = 0; i < ARRAY_LENGTH(commands); ++i) { for (j = 0; j < commands[i].len; ++j) { switch (commands[i].setup) { default: FALLTHROUGH; case NONE: /* This test calls for no setup on the socks state. */ break; case AUTH: /* This test calls for the socks state to be waiting for * username/password authentication */ ADD_DATA(buf, "\x05\x01\x02"); tt_int_op(0, OP_EQ, fetch_from_buf_socks(buf, socks, 0, 0)); tt_int_op(0, OP_EQ, buf_datalen(buf)); break; case ALL: /* This test calls for the socks state to be waiting for * the connection request */ ADD_DATA(buf, "\x05\x01\x00"); tt_int_op(0, OP_EQ, fetch_from_buf_socks(buf, socks, 0, 0)); tt_int_op(0, OP_EQ, buf_datalen(buf)); } TT_BLATHER(("Checking command %u, length %u, omitting char %u", i, j, (unsigned)commands[i].body[j])); buf_add(buf, commands[i].body, j); /* This should return 0 meaning "not done yet" */ tt_int_op(0, OP_EQ, fetch_from_buf_socks(buf, socks, 0, 0)); tt_uint_op(j, OP_EQ, buf_datalen(buf)); /* Nothing was drained */ buf_clear(buf); socks_request_free(testdata->req); socks = testdata->req = socks_request_new(); } } done: ; } static void test_socks_wrong_protocol(void *ptr) { SOCKS_TEST_INIT(); setup_capture_of_logs(LOG_DEBUG); /* HTTP request. */ ADD_DATA(buf, "GET /index.html HTTP/1.0" ); tt_int_op(fetch_from_buf_socks(buf, socks, 1, 0), OP_EQ, -1); buf_clear(buf); expect_log_msg_containing("Socks version 71 not recognized. " "(This port is not an HTTP proxy;"); mock_clean_saved_logs(); socks_request_clear(socks); done: teardown_capture_of_logs(); } /* Check our client-side socks4 parsing (that is to say, our parsing of * server responses). */ static void test_socks_client_v4(void *arg) { (void)arg; buf_t *buf = buf_new(); char *reason = NULL; /* Legit socks4 response, success */ ADD_DATA(buf, "\x04\x5a\x20\x25\x01\x02\x03\x04"); tt_int_op(1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS4_WANT_CONNECT_OK, &reason)); tt_ptr_op(reason, OP_EQ, NULL); tt_int_op(buf_datalen(buf), OP_EQ, 0); /* Legit socks4 response, failure. */ ADD_DATA(buf, "\x04\x5b\x20\x25\x01\x02\x03\x04"); tt_int_op(-1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS4_WANT_CONNECT_OK, &reason)); tt_ptr_op(reason, OP_NE, NULL); tt_str_op(reason, OP_EQ, "server rejected connection"); done: buf_free(buf); tor_free(reason); } /* Check our client-side socks5 authentication-negotiation parsing (that is to * say, our parsing of server responses). */ static void test_socks_client_v5_auth(void *arg) { (void)arg; buf_t *buf = buf_new(); char *reason = NULL; /* Legit socks5 responses, got a method we like. */ ADD_DATA(buf, "\x05\x00"); tt_int_op(1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS5_WANT_AUTH_METHOD_NONE, &reason)); tt_ptr_op(reason, OP_EQ, NULL); tt_int_op(buf_datalen(buf), OP_EQ, 0); /* Same, but we wanted something else. */ ADD_DATA(buf, "\x05\x00"); tt_int_op(1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS5_WANT_AUTH_METHOD_RFC1929, &reason)); tt_ptr_op(reason, OP_EQ, NULL); tt_int_op(buf_datalen(buf), OP_EQ, 0); /* Same, and they offered a password. */ ADD_DATA(buf, "\x05\x02"); tt_int_op(2, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS5_WANT_AUTH_METHOD_RFC1929, &reason)); tt_ptr_op(reason, OP_EQ, NULL); tt_int_op(buf_datalen(buf), OP_EQ, 0); /* They rejected our method, or selected something we don't know. */ ADD_DATA(buf, "\x05\xff"); tt_int_op(-1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS5_WANT_AUTH_METHOD_NONE, &reason)); tt_str_op(reason, OP_EQ, "server doesn't support any of our available " "authentication methods"); buf_clear(buf); tor_free(reason); ADD_DATA(buf, "\x05\xff"); tt_int_op(-1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS5_WANT_AUTH_METHOD_RFC1929, &reason)); tt_str_op(reason, OP_EQ, "server doesn't support any of our available " "authentication methods"); tor_free(reason); buf_clear(buf); /* Now check for authentication responses: check success and failure. */ ADD_DATA(buf, "\x01\x00"); tt_int_op(1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS5_WANT_AUTH_RFC1929_OK, &reason)); tt_ptr_op(reason, OP_EQ, NULL); tt_int_op(buf_datalen(buf), OP_EQ, 0); ADD_DATA(buf, "\x01\xf0"); tt_int_op(-1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS5_WANT_AUTH_RFC1929_OK, &reason)); tt_ptr_op(reason, OP_NE, NULL); tt_str_op(reason, OP_EQ, "authentication failed"); done: buf_free(buf); tor_free(reason); } /* Check our client-side socks5 connect parsing (that is to say, our parsing * of server responses). */ static void test_socks_client_v5_connect(void *arg) { (void)arg; buf_t *buf = buf_new(); char *reason = NULL; /* Legit socks5 responses, success, ipv4. */ ADD_DATA(buf, "\x05\x00\x00\x01\x01\x02\x03\x04\x00\x05"); tt_int_op(1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS5_WANT_CONNECT_OK, &reason)); tt_ptr_op(reason, OP_EQ, NULL); tt_int_op(buf_datalen(buf), OP_EQ, 0); /* Legit socks5 responses, success, ipv6. */ ADD_DATA(buf, "\x05\x00\x00\x04" "abcdefghijklmnop" "\x00\x05"); tt_int_op(1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS5_WANT_CONNECT_OK, &reason)); tt_ptr_op(reason, OP_EQ, NULL); tt_int_op(buf_datalen(buf), OP_EQ, 0); /* Legit socks5 responses, success, hostname. */ ADD_DATA(buf, "\x05\x00\x00\x03\x12" "gopher.example.com" "\x00\x05"); tt_int_op(1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS5_WANT_CONNECT_OK, &reason)); tt_ptr_op(reason, OP_EQ, NULL); tt_int_op(buf_datalen(buf), OP_EQ, 0); /* Legit socks5 responses, failure, hostname. */ ADD_DATA(buf, "\x05\x03\x00\x03\x12" "gopher.example.com" "\x00\x05"); tt_int_op(-1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS5_WANT_CONNECT_OK, &reason)); tt_ptr_op(reason, OP_NE, NULL); tt_str_op(reason, OP_EQ, "Network unreachable"); tor_free(reason); buf_clear(buf); /* Bogus socks5 responses: what is address type 0x17? */ ADD_DATA(buf, "\x05\x03\x00\x17\x12 blah blah"); tt_int_op(-1, OP_EQ, fetch_from_buf_socks_client(buf, PROXY_SOCKS5_WANT_CONNECT_OK, &reason)); tt_ptr_op(reason, OP_NE, NULL); tt_str_op(reason, OP_EQ, "invalid response to connect request"); buf_clear(buf); done: buf_free(buf); tor_free(reason); } static void test_socks_client_truncated(void *arg) { (void)arg; buf_t *buf = buf_new(); char *reason = NULL; #define S(str) str, (sizeof(str)-1) const struct { int state; const char *body; size_t len; } replies[] = { { PROXY_SOCKS4_WANT_CONNECT_OK, S("\x04\x5a\x20\x25\x01\x02\x03\x04") }, { PROXY_SOCKS4_WANT_CONNECT_OK, S("\x04\x5b\x20\x25\x01\x02\x03\x04") }, { PROXY_SOCKS5_WANT_AUTH_METHOD_NONE, S("\x05\x00") }, { PROXY_SOCKS5_WANT_AUTH_METHOD_RFC1929, S("\x05\x00") }, { PROXY_SOCKS5_WANT_AUTH_RFC1929_OK, S("\x01\x00") }, { PROXY_SOCKS5_WANT_CONNECT_OK, S("\x05\x00\x00\x01\x01\x02\x03\x04\x00\x05") }, { PROXY_SOCKS5_WANT_CONNECT_OK, S("\x05\x00\x00\x04" "abcdefghijklmnop" "\x00\x05") }, { PROXY_SOCKS5_WANT_CONNECT_OK, S("\x05\x00\x00\x03\x12" "gopher.example.com" "\x00\x05") }, { PROXY_SOCKS5_WANT_CONNECT_OK, S("\x05\x03\x00\x03\x12" "gopher.example.com""\x00\x05") }, { PROXY_SOCKS5_WANT_CONNECT_OK, S("\x05\x03\x00\x17") }, }; unsigned i, j; for (i = 0; i < ARRAY_LENGTH(replies); ++i) { for (j = 0; j < replies[i].len; ++j) { TT_BLATHER(("Checking command %u, length %u", i, j)); buf_add(buf, replies[i].body, j); /* This should return 0 meaning "not done yet" */ tt_int_op(0, OP_EQ, fetch_from_buf_socks_client(buf, replies[i].state, &reason)); tt_uint_op(j, OP_EQ, buf_datalen(buf)); /* Nothing was drained */ buf_clear(buf); tt_ptr_op(reason, OP_EQ, NULL); } } done: tor_free(reason); buf_free(buf); } #define SOCKSENT(name) \ { #name, test_socks_##name, TT_FORK, &socks_setup, NULL } struct testcase_t socks_tests[] = { SOCKSENT(4_unsupported_commands), SOCKSENT(4_supported_commands), SOCKSENT(4_bad_arguments), SOCKSENT(5_unsupported_commands), SOCKSENT(5_supported_commands), SOCKSENT(5_no_authenticate), SOCKSENT(5_auth_unsupported_type), SOCKSENT(5_auth_unsupported_version), SOCKSENT(5_auth_before_negotiation), SOCKSENT(5_authenticate), SOCKSENT(5_authenticate_empty_user_pass), SOCKSENT(5_authenticate_with_data), SOCKSENT(5_malformed_commands), SOCKSENT(5_bad_arguments), SOCKSENT(truncated), SOCKSENT(wrong_protocol), { "client/v4", test_socks_client_v4, TT_FORK, NULL, NULL }, { "client/v5_auth", test_socks_client_v5_auth, TT_FORK, NULL, NULL }, { "client/v5_connect", test_socks_client_v5_connect, TT_FORK, NULL, NULL }, { "client/truncated", test_socks_client_truncated, TT_FORK, NULL, NULL }, END_OF_TESTCASES };