diff options
Diffstat (limited to 'libs/libevent/docs/test/regress_dns.c')
| -rw-r--r-- | libs/libevent/docs/test/regress_dns.c | 2151 |
1 files changed, 0 insertions, 2151 deletions
diff --git a/libs/libevent/docs/test/regress_dns.c b/libs/libevent/docs/test/regress_dns.c deleted file mode 100644 index 1873636245..0000000000 --- a/libs/libevent/docs/test/regress_dns.c +++ /dev/null @@ -1,2151 +0,0 @@ -/* - * Copyright (c) 2003-2007 Niels Provos <provos@citi.umich.edu> - * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#include "../util-internal.h" - -#ifdef _WIN32 -#include <winsock2.h> -#include <windows.h> -#include <ws2tcpip.h> -#endif - -#include "event2/event-config.h" - -#include <sys/types.h> -#include <sys/stat.h> -#ifdef EVENT__HAVE_SYS_TIME_H -#include <sys/time.h> -#endif -#include <sys/queue.h> -#ifndef _WIN32 -#include <sys/socket.h> -#include <signal.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <unistd.h> -#endif -#ifdef EVENT__HAVE_NETINET_IN6_H -#include <netinet/in6.h> -#endif -#ifdef HAVE_NETDB_H -#include <netdb.h> -#endif -#include <fcntl.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <errno.h> - -#include "event2/dns.h" -#include "event2/dns_compat.h" -#include "event2/dns_struct.h" -#include "event2/event.h" -#include "event2/event_compat.h" -#include "event2/event_struct.h" -#include "event2/util.h" -#include "event2/listener.h" -#include "event2/bufferevent.h" -#include "log-internal.h" -#include "regress.h" -#include "regress_testutils.h" - -#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0])) - -static int dns_ok = 0; -static int dns_got_cancel = 0; -static int dns_err = 0; - - -static void -dns_gethostbyname_cb(int result, char type, int count, int ttl, - void *addresses, void *arg) -{ - dns_ok = dns_err = 0; - - if (result == DNS_ERR_TIMEOUT) { - printf("[Timed out] "); - dns_err = result; - goto out; - } - - if (result != DNS_ERR_NONE) { - printf("[Error code %d] ", result); - goto out; - } - - TT_BLATHER(("type: %d, count: %d, ttl: %d: ", type, count, ttl)); - - switch (type) { - case DNS_IPv6_AAAA: { -#if defined(EVENT__HAVE_STRUCT_IN6_ADDR) && defined(EVENT__HAVE_INET_NTOP) && defined(INET6_ADDRSTRLEN) - struct in6_addr *in6_addrs = addresses; - char buf[INET6_ADDRSTRLEN+1]; - int i; - /* a resolution that's not valid does not help */ - if (ttl < 0) - goto out; - for (i = 0; i < count; ++i) { - const char *b = evutil_inet_ntop(AF_INET6, &in6_addrs[i], buf,sizeof(buf)); - if (b) - TT_BLATHER(("%s ", b)); - else - TT_BLATHER(("%s ", strerror(errno))); - } -#endif - break; - } - case DNS_IPv4_A: { - struct in_addr *in_addrs = addresses; - int i; - /* a resolution that's not valid does not help */ - if (ttl < 0) - goto out; - for (i = 0; i < count; ++i) - TT_BLATHER(("%s ", inet_ntoa(in_addrs[i]))); - break; - } - case DNS_PTR: - /* may get at most one PTR */ - if (count != 1) - goto out; - - TT_BLATHER(("%s ", *(char **)addresses)); - break; - default: - goto out; - } - - dns_ok = type; - -out: - if (arg == NULL) - event_loopexit(NULL); - else - event_base_loopexit((struct event_base *)arg, NULL); -} - -static void -dns_gethostbyname(void) -{ - dns_ok = 0; - evdns_resolve_ipv4("www.monkey.org", 0, dns_gethostbyname_cb, NULL); - event_dispatch(); - - tt_int_op(dns_ok, ==, DNS_IPv4_A); - test_ok = dns_ok; -end: - ; -} - -static void -dns_gethostbyname6(void) -{ - dns_ok = 0; - evdns_resolve_ipv6("www.ietf.org", 0, dns_gethostbyname_cb, NULL); - event_dispatch(); - - if (!dns_ok && dns_err == DNS_ERR_TIMEOUT) { - tt_skip(); - } - - tt_int_op(dns_ok, ==, DNS_IPv6_AAAA); - test_ok = 1; -end: - ; -} - -static void -dns_gethostbyaddr(void) -{ - struct in_addr in; - in.s_addr = htonl(0x7f000001ul); /* 127.0.0.1 */ - dns_ok = 0; - evdns_resolve_reverse(&in, 0, dns_gethostbyname_cb, NULL); - event_dispatch(); - - tt_int_op(dns_ok, ==, DNS_PTR); - test_ok = dns_ok; -end: - ; -} - -static void -dns_resolve_reverse(void *ptr) -{ - struct in_addr in; - struct event_base *base = event_base_new(); - struct evdns_base *dns = evdns_base_new(base, 1/* init name servers */); - struct evdns_request *req = NULL; - - tt_assert(base); - tt_assert(dns); - in.s_addr = htonl(0x7f000001ul); /* 127.0.0.1 */ - dns_ok = 0; - - req = evdns_base_resolve_reverse( - dns, &in, 0, dns_gethostbyname_cb, base); - tt_assert(req); - - event_base_dispatch(base); - - tt_int_op(dns_ok, ==, DNS_PTR); - -end: - if (dns) - evdns_base_free(dns, 0); - if (base) - event_base_free(base); -} - -static int n_server_responses = 0; - -static void -dns_server_request_cb(struct evdns_server_request *req, void *data) -{ - int i, r; - const char TEST_ARPA[] = "11.11.168.192.in-addr.arpa"; - const char TEST_IN6[] = - "f.e.f.e." "0.0.0.0." "0.0.0.0." "1.1.1.1." - "a.a.a.a." "0.0.0.0." "0.0.0.0." "0.f.f.f.ip6.arpa"; - - for (i = 0; i < req->nquestions; ++i) { - const int qtype = req->questions[i]->type; - const int qclass = req->questions[i]->dns_question_class; - const char *qname = req->questions[i]->name; - - struct in_addr ans; - ans.s_addr = htonl(0xc0a80b0bUL); /* 192.168.11.11 */ - if (qtype == EVDNS_TYPE_A && - qclass == EVDNS_CLASS_INET && - !evutil_ascii_strcasecmp(qname, "zz.example.com")) { - r = evdns_server_request_add_a_reply(req, qname, - 1, &ans.s_addr, 12345); - if (r<0) - dns_ok = 0; - } else if (qtype == EVDNS_TYPE_AAAA && - qclass == EVDNS_CLASS_INET && - !evutil_ascii_strcasecmp(qname, "zz.example.com")) { - char addr6[17] = "abcdefghijklmnop"; - r = evdns_server_request_add_aaaa_reply(req, - qname, 1, addr6, 123); - if (r<0) - dns_ok = 0; - } else if (qtype == EVDNS_TYPE_PTR && - qclass == EVDNS_CLASS_INET && - !evutil_ascii_strcasecmp(qname, TEST_ARPA)) { - r = evdns_server_request_add_ptr_reply(req, NULL, - qname, "ZZ.EXAMPLE.COM", 54321); - if (r<0) - dns_ok = 0; - } else if (qtype == EVDNS_TYPE_PTR && - qclass == EVDNS_CLASS_INET && - !evutil_ascii_strcasecmp(qname, TEST_IN6)){ - r = evdns_server_request_add_ptr_reply(req, NULL, - qname, - "ZZ-INET6.EXAMPLE.COM", 54322); - if (r<0) - dns_ok = 0; - } else if (qtype == EVDNS_TYPE_A && - qclass == EVDNS_CLASS_INET && - !evutil_ascii_strcasecmp(qname, "drop.example.com")) { - if (evdns_server_request_drop(req)<0) - dns_ok = 0; - return; - } else { - printf("Unexpected question %d %d \"%s\" ", - qtype, qclass, qname); - dns_ok = 0; - } - } - r = evdns_server_request_respond(req, 0); - if (r<0) { - printf("Couldn't send reply. "); - dns_ok = 0; - } -} - -static void -dns_server_gethostbyname_cb(int result, char type, int count, int ttl, - void *addresses, void *arg) -{ - if (result == DNS_ERR_CANCEL) { - if (arg != (void*)(char*)90909) { - printf("Unexpected cancelation"); - dns_ok = 0; - } - dns_got_cancel = 1; - goto out; - } - if (result != DNS_ERR_NONE) { - printf("Unexpected result %d. ", result); - dns_ok = 0; - goto out; - } - if (count != 1) { - printf("Unexpected answer count %d. ", count); - dns_ok = 0; - goto out; - } - switch (type) { - case DNS_IPv4_A: { - struct in_addr *in_addrs = addresses; - if (in_addrs[0].s_addr != htonl(0xc0a80b0bUL) || ttl != 12345) { - printf("Bad IPv4 response \"%s\" %d. ", - inet_ntoa(in_addrs[0]), ttl); - dns_ok = 0; - goto out; - } - break; - } - case DNS_IPv6_AAAA: { -#if defined (EVENT__HAVE_STRUCT_IN6_ADDR) && defined(EVENT__HAVE_INET_NTOP) && defined(INET6_ADDRSTRLEN) - struct in6_addr *in6_addrs = addresses; - char buf[INET6_ADDRSTRLEN+1]; - if (memcmp(&in6_addrs[0].s6_addr, "abcdefghijklmnop", 16) - || ttl != 123) { - const char *b = evutil_inet_ntop(AF_INET6, &in6_addrs[0],buf,sizeof(buf)); - printf("Bad IPv6 response \"%s\" %d. ", b, ttl); - dns_ok = 0; - goto out; - } -#endif - break; - } - case DNS_PTR: { - char **addrs = addresses; - if (arg != (void*)6) { - if (strcmp(addrs[0], "ZZ.EXAMPLE.COM") || - ttl != 54321) { - printf("Bad PTR response \"%s\" %d. ", - addrs[0], ttl); - dns_ok = 0; - goto out; - } - } else { - if (strcmp(addrs[0], "ZZ-INET6.EXAMPLE.COM") || - ttl != 54322) { - printf("Bad ipv6 PTR response \"%s\" %d. ", - addrs[0], ttl); - dns_ok = 0; - goto out; - } - } - break; - } - default: - printf("Bad response type %d. ", type); - dns_ok = 0; - } - out: - if (++n_server_responses == 3) { - event_loopexit(NULL); - } -} - -static void -dns_server(void) -{ - evutil_socket_t sock=-1; - struct sockaddr_in my_addr; - struct sockaddr_storage ss; - ev_socklen_t slen; - struct evdns_server_port *port=NULL; - struct in_addr resolve_addr; - struct in6_addr resolve_addr6; - struct evdns_base *base=NULL; - struct evdns_request *req=NULL; - - dns_ok = 1; - - base = evdns_base_new(NULL, 0); - - /* Now configure a nameserver port. */ - sock = socket(AF_INET, SOCK_DGRAM, 0); - if (sock<0) { - tt_abort_perror("socket"); - } - - evutil_make_socket_nonblocking(sock); - - memset(&my_addr, 0, sizeof(my_addr)); - my_addr.sin_family = AF_INET; - my_addr.sin_port = 0; /* kernel picks */ - my_addr.sin_addr.s_addr = htonl(0x7f000001UL); - if (bind(sock, (struct sockaddr*)&my_addr, sizeof(my_addr)) < 0) { - tt_abort_perror("bind"); - } - slen = sizeof(ss); - if (getsockname(sock, (struct sockaddr*)&ss, &slen) < 0) { - tt_abort_perror("getsockname"); - } - - port = evdns_add_server_port(sock, 0, dns_server_request_cb, NULL); - - /* Add ourself as the only nameserver, and make sure we really are - * the only nameserver. */ - evdns_base_nameserver_sockaddr_add(base, (struct sockaddr*)&ss, slen, 0); - tt_int_op(evdns_base_count_nameservers(base), ==, 1); - { - struct sockaddr_storage ss2; - int slen2; - - memset(&ss2, 0, sizeof(ss2)); - - slen2 = evdns_base_get_nameserver_addr(base, 0, (struct sockaddr *)&ss2, 3); - tt_int_op(slen2, ==, slen); - tt_int_op(ss2.ss_family, ==, 0); - slen2 = evdns_base_get_nameserver_addr(base, 0, (struct sockaddr *)&ss2, sizeof(ss2)); - tt_int_op(slen2, ==, slen); - tt_mem_op(&ss2, ==, &ss, slen); - - slen2 = evdns_base_get_nameserver_addr(base, 1, (struct sockaddr *)&ss2, sizeof(ss2)); - tt_int_op(-1, ==, slen2); - } - - /* Send some queries. */ - evdns_base_resolve_ipv4(base, "zz.example.com", DNS_QUERY_NO_SEARCH, - dns_server_gethostbyname_cb, NULL); - evdns_base_resolve_ipv6(base, "zz.example.com", DNS_QUERY_NO_SEARCH, - dns_server_gethostbyname_cb, NULL); - resolve_addr.s_addr = htonl(0xc0a80b0bUL); /* 192.168.11.11 */ - evdns_base_resolve_reverse(base, &resolve_addr, 0, - dns_server_gethostbyname_cb, NULL); - memcpy(resolve_addr6.s6_addr, - "\xff\xf0\x00\x00\x00\x00\xaa\xaa" - "\x11\x11\x00\x00\x00\x00\xef\xef", 16); - evdns_base_resolve_reverse_ipv6(base, &resolve_addr6, 0, - dns_server_gethostbyname_cb, (void*)6); - - req = evdns_base_resolve_ipv4(base, - "drop.example.com", DNS_QUERY_NO_SEARCH, - dns_server_gethostbyname_cb, (void*)(char*)90909); - - evdns_cancel_request(base, req); - - event_dispatch(); - - tt_assert(dns_got_cancel); - test_ok = dns_ok; - -end: - if (port) - evdns_close_server_port(port); - if (sock >= 0) - evutil_closesocket(sock); - if (base) - evdns_base_free(base, 0); -} - -static int n_replies_left; -static struct event_base *exit_base; -static struct evdns_server_port *exit_port; - -struct generic_dns_callback_result { - int result; - char type; - int count; - int ttl; - size_t addrs_len; - void *addrs; - char addrs_buf[256]; -}; - -static void -generic_dns_callback(int result, char type, int count, int ttl, void *addresses, - void *arg) -{ - size_t len; - struct generic_dns_callback_result *res = arg; - res->result = result; - res->type = type; - res->count = count; - res->ttl = ttl; - - if (type == DNS_IPv4_A) - len = count * 4; - else if (type == DNS_IPv6_AAAA) - len = count * 16; - else if (type == DNS_PTR) - len = strlen(addresses)+1; - else { - res->addrs_len = len = 0; - res->addrs = NULL; - } - if (len) { - res->addrs_len = len; - if (len > 256) - len = 256; - memcpy(res->addrs_buf, addresses, len); - res->addrs = res->addrs_buf; - } - - --n_replies_left; - if (n_replies_left == 0) { - if (exit_port) { - evdns_close_server_port(exit_port); - exit_port = NULL; - } else - event_base_loopexit(exit_base, NULL); - } -} - -static struct regress_dns_server_table search_table[] = { - { "host.a.example.com", "err", "3", 0, 0 }, - { "host.b.example.com", "err", "3", 0, 0 }, - { "host.c.example.com", "A", "11.22.33.44", 0, 0 }, - { "host2.a.example.com", "err", "3", 0, 0 }, - { "host2.b.example.com", "A", "200.100.0.100", 0, 0 }, - { "host2.c.example.com", "err", "3", 0, 0 }, - { "hostn.a.example.com", "errsoa", "0", 0, 0 }, - { "hostn.b.example.com", "errsoa", "3", 0, 0 }, - { "hostn.c.example.com", "err", "0", 0, 0 }, - - { "host", "err", "3", 0, 0 }, - { "host2", "err", "3", 0, 0 }, - { "*", "err", "3", 0, 0 }, - { NULL, NULL, NULL, 0, 0 } -}; -static void -dns_search_test_impl(void *arg, int lower) -{ - struct regress_dns_server_table table[ARRAY_SIZE(search_table)]; - struct basic_test_data *data = arg; - struct event_base *base = data->base; - struct evdns_base *dns = NULL; - ev_uint16_t portnum = 0; - char buf[64]; - - struct generic_dns_callback_result r[8]; - size_t i; - - for (i = 0; i < ARRAY_SIZE(table); ++i) { - table[i] = search_table[i]; - table[i].lower = lower; - } - - tt_assert(regress_dnsserver(base, &portnum, table)); - evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum); - - dns = evdns_base_new(base, 0); - tt_assert(!evdns_base_nameserver_ip_add(dns, buf)); - - evdns_base_search_add(dns, "a.example.com"); - evdns_base_search_add(dns, "b.example.com"); - evdns_base_search_add(dns, "c.example.com"); - - n_replies_left = ARRAY_SIZE(r); - exit_base = base; - - evdns_base_resolve_ipv4(dns, "host", 0, generic_dns_callback, &r[0]); - evdns_base_resolve_ipv4(dns, "host2", 0, generic_dns_callback, &r[1]); - evdns_base_resolve_ipv4(dns, "host", DNS_NO_SEARCH, generic_dns_callback, &r[2]); - evdns_base_resolve_ipv4(dns, "host2", DNS_NO_SEARCH, generic_dns_callback, &r[3]); - evdns_base_resolve_ipv4(dns, "host3", 0, generic_dns_callback, &r[4]); - evdns_base_resolve_ipv4(dns, "hostn.a.example.com", DNS_NO_SEARCH, generic_dns_callback, &r[5]); - evdns_base_resolve_ipv4(dns, "hostn.b.example.com", DNS_NO_SEARCH, generic_dns_callback, &r[6]); - evdns_base_resolve_ipv4(dns, "hostn.c.example.com", DNS_NO_SEARCH, generic_dns_callback, &r[7]); - - event_base_dispatch(base); - - tt_int_op(r[0].type, ==, DNS_IPv4_A); - tt_int_op(r[0].count, ==, 1); - tt_int_op(((ev_uint32_t*)r[0].addrs)[0], ==, htonl(0x0b16212c)); - tt_int_op(r[1].type, ==, DNS_IPv4_A); - tt_int_op(r[1].count, ==, 1); - tt_int_op(((ev_uint32_t*)r[1].addrs)[0], ==, htonl(0xc8640064)); - tt_int_op(r[2].result, ==, DNS_ERR_NOTEXIST); - tt_int_op(r[3].result, ==, DNS_ERR_NOTEXIST); - tt_int_op(r[4].result, ==, DNS_ERR_NOTEXIST); - tt_int_op(r[5].result, ==, DNS_ERR_NODATA); - tt_int_op(r[5].ttl, ==, 42); - tt_int_op(r[6].result, ==, DNS_ERR_NOTEXIST); - tt_int_op(r[6].ttl, ==, 42); - tt_int_op(r[7].result, ==, DNS_ERR_NODATA); - tt_int_op(r[7].ttl, ==, 0); - -end: - if (dns) - evdns_base_free(dns, 0); - - regress_clean_dnsserver(); -} -static void -dns_search_test(void *arg) -{ - return dns_search_test_impl(arg, 0); -} -static void -dns_search_lower_test(void *arg) -{ - return dns_search_test_impl(arg, 1); -} - -static int request_count = 0; -static struct evdns_request *current_req = NULL; - -static void -search_cancel_server_cb(struct evdns_server_request *req, void *data) -{ - const char *question; - - if (req->nquestions != 1) - TT_DIE(("Only handling one question at a time; got %d", - req->nquestions)); - - question = req->questions[0]->name; - - TT_BLATHER(("got question, %s", question)); - - tt_assert(request_count > 0); - tt_assert(!evdns_server_request_respond(req, 3)); - - if (!--request_count) - evdns_cancel_request(NULL, current_req); - -end: - ; -} - -static void -dns_search_cancel_test(void *arg) -{ - struct basic_test_data *data = arg; - struct event_base *base = data->base; - struct evdns_base *dns = NULL; - struct evdns_server_port *port = NULL; - ev_uint16_t portnum = 0; - struct generic_dns_callback_result r1; - char buf[64]; - - port = regress_get_dnsserver(base, &portnum, NULL, - search_cancel_server_cb, NULL); - tt_assert(port); - evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum); - - dns = evdns_base_new(base, 0); - tt_assert(!evdns_base_nameserver_ip_add(dns, buf)); - - evdns_base_search_add(dns, "a.example.com"); - evdns_base_search_add(dns, "b.example.com"); - evdns_base_search_add(dns, "c.example.com"); - evdns_base_search_add(dns, "d.example.com"); - - exit_base = base; - request_count = 3; - n_replies_left = 1; - - current_req = evdns_base_resolve_ipv4(dns, "host", 0, - generic_dns_callback, &r1); - event_base_dispatch(base); - - tt_int_op(r1.result, ==, DNS_ERR_CANCEL); - -end: - if (port) - evdns_close_server_port(port); - if (dns) - evdns_base_free(dns, 0); -} - -static void -fail_server_cb(struct evdns_server_request *req, void *data) -{ - const char *question; - int *count = data; - struct in_addr in; - - /* Drop the first N requests that we get. */ - if (*count > 0) { - --*count; - tt_want(! evdns_server_request_drop(req)); - return; - } - - if (req->nquestions != 1) - TT_DIE(("Only handling one question at a time; got %d", - req->nquestions)); - - question = req->questions[0]->name; - - if (!evutil_ascii_strcasecmp(question, "google.com")) { - /* Detect a probe, and get out of the loop. */ - event_base_loopexit(exit_base, NULL); - } - - tt_assert(evutil_inet_pton(AF_INET, "16.32.64.128", &in)); - evdns_server_request_add_a_reply(req, question, 1, &in.s_addr, - 100); - tt_assert(! evdns_server_request_respond(req, 0)) - return; -end: - tt_want(! evdns_server_request_drop(req)); -} - -static void -dns_retry_test_impl(void *arg, int flags) -{ - struct basic_test_data *data = arg; - struct event_base *base = data->base; - struct evdns_server_port *port = NULL; - struct evdns_base *dns = NULL; - int drop_count = 2; - ev_uint16_t portnum = 0; - char buf[64]; - - struct generic_dns_callback_result r1; - - port = regress_get_dnsserver(base, &portnum, NULL, - fail_server_cb, &drop_count); - tt_assert(port); - evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum); - - dns = evdns_base_new(base, flags); - tt_assert(!evdns_base_nameserver_ip_add(dns, buf)); - tt_assert(! evdns_base_set_option(dns, "timeout", "0.2")); - tt_assert(! evdns_base_set_option(dns, "max-timeouts:", "10")); - tt_assert(! evdns_base_set_option(dns, "initial-probe-timeout", "0.1")); - - evdns_base_resolve_ipv4(dns, "host.example.com", 0, - generic_dns_callback, &r1); - - n_replies_left = 1; - exit_base = base; - - event_base_dispatch(base); - - tt_int_op(drop_count, ==, 0); - - tt_int_op(r1.type, ==, DNS_IPv4_A); - tt_int_op(r1.count, ==, 1); - tt_int_op(((ev_uint32_t*)r1.addrs)[0], ==, htonl(0x10204080)); - - /* Now try again, but this time have the server get treated as - * failed, so we can send it a test probe. */ - drop_count = 4; - tt_assert(! evdns_base_set_option(dns, "max-timeouts:", "2")); - tt_assert(! evdns_base_set_option(dns, "attempts:", "3")); - memset(&r1, 0, sizeof(r1)); - - evdns_base_resolve_ipv4(dns, "host.example.com", 0, - generic_dns_callback, &r1); - - n_replies_left = 2; - - /* This will run until it answers the "google.com" probe request. */ - event_base_dispatch(base); - - /* We'll treat the server as failed here. */ - tt_int_op(r1.result, ==, DNS_ERR_TIMEOUT); - - /* It should work this time. */ - tt_int_op(drop_count, ==, 0); - evdns_base_resolve_ipv4(dns, "host.example.com", 0, - generic_dns_callback, &r1); - - event_base_dispatch(base); - tt_int_op(r1.result, ==, DNS_ERR_NONE); - tt_int_op(r1.type, ==, DNS_IPv4_A); - tt_int_op(r1.count, ==, 1); - tt_int_op(((ev_uint32_t*)r1.addrs)[0], ==, htonl(0x10204080)); - -end: - if (dns) - evdns_base_free(dns, 0); - if (port) - evdns_close_server_port(port); -} -static void -dns_retry_test(void *arg) -{ - dns_retry_test_impl(arg, 0); -} -static void -dns_retry_disable_when_inactive_test(void *arg) -{ - dns_retry_test_impl(arg, EVDNS_BASE_DISABLE_WHEN_INACTIVE); -} - -static struct regress_dns_server_table internal_error_table[] = { - /* Error 4 (NOTIMPL) makes us reissue the request to another server - if we can. - - XXXX we should reissue under a much wider set of circumstances! - */ - { "foof.example.com", "err", "4", 0, 0 }, - { NULL, NULL, NULL, 0, 0 } -}; - -static struct regress_dns_server_table reissue_table[] = { - { "foof.example.com", "A", "240.15.240.15", 0, 0 }, - { NULL, NULL, NULL, 0, 0 } -}; - -static void -dns_reissue_test_impl(void *arg, int flags) -{ - struct basic_test_data *data = arg; - struct event_base *base = data->base; - struct evdns_server_port *port1 = NULL, *port2 = NULL; - struct evdns_base *dns = NULL; - struct generic_dns_callback_result r1; - ev_uint16_t portnum1 = 0, portnum2=0; - char buf1[64], buf2[64]; - - port1 = regress_get_dnsserver(base, &portnum1, NULL, - regress_dns_server_cb, internal_error_table); - tt_assert(port1); - port2 = regress_get_dnsserver(base, &portnum2, NULL, - regress_dns_server_cb, reissue_table); - tt_assert(port2); - evutil_snprintf(buf1, sizeof(buf1), "127.0.0.1:%d", (int)portnum1); - evutil_snprintf(buf2, sizeof(buf2), "127.0.0.1:%d", (int)portnum2); - - dns = evdns_base_new(base, flags); - tt_assert(!evdns_base_nameserver_ip_add(dns, buf1)); - tt_assert(! evdns_base_set_option(dns, "timeout:", "0.3")); - tt_assert(! evdns_base_set_option(dns, "max-timeouts:", "2")); - tt_assert(! evdns_base_set_option(dns, "attempts:", "5")); - - memset(&r1, 0, sizeof(r1)); - evdns_base_resolve_ipv4(dns, "foof.example.com", 0, - generic_dns_callback, &r1); - - /* Add this after, so that we are sure to get a reissue. */ - tt_assert(!evdns_base_nameserver_ip_add(dns, buf2)); - - n_replies_left = 1; - exit_base = base; - - event_base_dispatch(base); - tt_int_op(r1.result, ==, DNS_ERR_NONE); - tt_int_op(r1.type, ==, DNS_IPv4_A); - tt_int_op(r1.count, ==, 1); - tt_int_op(((ev_uint32_t*)r1.addrs)[0], ==, htonl(0xf00ff00f)); - - /* Make sure we dropped at least once. */ - tt_int_op(internal_error_table[0].seen, >, 0); - -end: - if (dns) - evdns_base_free(dns, 0); - if (port1) - evdns_close_server_port(port1); - if (port2) - evdns_close_server_port(port2); -} -static void -dns_reissue_test(void *arg) -{ - dns_reissue_test_impl(arg, 0); -} -static void -dns_reissue_disable_when_inactive_test(void *arg) -{ - dns_reissue_test_impl(arg, EVDNS_BASE_DISABLE_WHEN_INACTIVE); -} - -#if 0 -static void -dumb_bytes_fn(char *p, size_t n) -{ - unsigned i; - /* This gets us 6 bits of entropy per transaction ID, which means we - * will have probably have collisions and need to pick again. */ - for (i=0;i<n;++i) - p[i] = (char)(rand() & 7); -} -#endif - -static void -dns_inflight_test_impl(void *arg, int flags) -{ - struct basic_test_data *data = arg; - struct event_base *base = data->base; - struct evdns_base *dns = NULL; - struct evdns_server_port *dns_port = NULL; - ev_uint16_t portnum = 0; - char buf[64]; - int disable_when_inactive = flags & EVDNS_BASE_DISABLE_WHEN_INACTIVE; - - struct generic_dns_callback_result r[20]; - int i; - - dns_port = regress_get_dnsserver(base, &portnum, NULL, - regress_dns_server_cb, reissue_table); - tt_assert(dns_port); - if (disable_when_inactive) { - exit_port = dns_port; - } - - evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum); - - dns = evdns_base_new(base, flags); - tt_assert(!evdns_base_nameserver_ip_add(dns, buf)); - tt_assert(! evdns_base_set_option(dns, "max-inflight:", "3")); - tt_assert(! evdns_base_set_option(dns, "randomize-case:", "0")); - - for (i=0;i<20;++i) - evdns_base_resolve_ipv4(dns, "foof.example.com", 0, generic_dns_callback, &r[i]); - - n_replies_left = 20; - exit_base = base; - - event_base_dispatch(base); - - for (i=0;i<20;++i) { - tt_int_op(r[i].type, ==, DNS_IPv4_A); - tt_int_op(r[i].count, ==, 1); - tt_int_op(((ev_uint32_t*)r[i].addrs)[0], ==, htonl(0xf00ff00f)); - } - -end: - if (dns) - evdns_base_free(dns, 0); - if (exit_port) { - evdns_close_server_port(exit_port); - exit_port = NULL; - } else if (! disable_when_inactive) { - evdns_close_server_port(dns_port); - } -} - -static void -dns_inflight_test(void *arg) -{ - dns_inflight_test_impl(arg, 0); -} - -static void -dns_disable_when_inactive_test(void *arg) -{ - dns_inflight_test_impl(arg, EVDNS_BASE_DISABLE_WHEN_INACTIVE); -} - -static void -dns_disable_when_inactive_no_ns_test(void *arg) -{ - struct basic_test_data *data = arg; - struct event_base *base = data->base, *inactive_base; - struct evdns_base *dns = NULL; - ev_uint16_t portnum = 0; - char buf[64]; - struct generic_dns_callback_result r; - - inactive_base = event_base_new(); - tt_assert(inactive_base); - - /** Create dns server with inactive base, to avoid replying to clients */ - tt_assert(regress_dnsserver(inactive_base, &portnum, search_table)); - evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum); - - dns = evdns_base_new(base, EVDNS_BASE_DISABLE_WHEN_INACTIVE); - tt_assert(!evdns_base_nameserver_ip_add(dns, buf)); - tt_assert(! evdns_base_set_option(dns, "timeout:", "0.1")); - - evdns_base_resolve_ipv4(dns, "foof.example.com", 0, generic_dns_callback, &r); - n_replies_left = 1; - exit_base = base; - - event_base_dispatch(base); - - tt_int_op(n_replies_left, ==, 0); - - tt_int_op(r.result, ==, DNS_ERR_TIMEOUT); - tt_int_op(r.count, ==, 0); - tt_ptr_op(r.addrs, ==, NULL); - -end: - if (dns) - evdns_base_free(dns, 0); - regress_clean_dnsserver(); - if (inactive_base) - event_base_free(inactive_base); -} - -/* === Test for bufferevent_socket_connect_hostname */ - -static int total_connected_or_failed = 0; -static int total_n_accepted = 0; -static struct event_base *be_connect_hostname_base = NULL; - -/* Implements a DNS server for the connect_hostname test and the - * getaddrinfo_async test */ -static void -be_getaddrinfo_server_cb(struct evdns_server_request *req, void *data) -{ - int i; - int *n_got_p=data; - int added_any=0; - ++*n_got_p; - - for (i=0;i<req->nquestions;++i) { - const int qtype = req->questions[i]->type; - const int qclass = req->questions[i]->dns_question_class; - const char *qname = req->questions[i]->name; - struct in_addr ans; - struct in6_addr ans6; - memset(&ans6, 0, sizeof(ans6)); - - TT_BLATHER(("Got question about %s, type=%d", qname, qtype)); - - if (qtype == EVDNS_TYPE_A && - qclass == EVDNS_CLASS_INET && - !evutil_ascii_strcasecmp(qname, "nobodaddy.example.com")) { - ans.s_addr = htonl(0x7f000001); - evdns_server_request_add_a_reply(req, qname, - 1, &ans.s_addr, 2000); - added_any = 1; - } else if (!evutil_ascii_strcasecmp(qname, - "nosuchplace.example.com")) { - /* ok, just say notfound. */ - } else if (!evutil_ascii_strcasecmp(qname, - "both.example.com")) { - if (qtype == EVDNS_TYPE_A) { - ans.s_addr = htonl(0x50502020); - evdns_server_request_add_a_reply(req, qname, - 1, &ans.s_addr, 2000); - added_any = 1; - } else if (qtype == EVDNS_TYPE_AAAA) { - ans6.s6_addr[0] = 0x80; - ans6.s6_addr[1] = 0xff; - ans6.s6_addr[14] = 0xbb; - ans6.s6_addr[15] = 0xbb; - evdns_server_request_add_aaaa_reply(req, qname, - 1, &ans6.s6_addr, 2000); - added_any = 1; - } - evdns_server_request_add_cname_reply(req, qname, - "both-canonical.example.com", 1000); - } else if (!evutil_ascii_strcasecmp(qname, - "v4only.example.com") || - !evutil_ascii_strcasecmp(qname, "v4assert.example.com")) { - if (qtype == EVDNS_TYPE_A) { - ans.s_addr = htonl(0x12345678); - evdns_server_request_add_a_reply(req, qname, - 1, &ans.s_addr, 2000); - added_any = 1; - } else if (!evutil_ascii_strcasecmp(qname, - "v4assert.example.com")) { - TT_FAIL(("Got an AAAA request for v4assert")); - } - } else if (!evutil_ascii_strcasecmp(qname, - "v6only.example.com") || - !evutil_ascii_strcasecmp(qname, "v6assert.example.com")) { - if (qtype == EVDNS_TYPE_AAAA) { - ans6.s6_addr[0] = 0x0b; - ans6.s6_addr[1] = 0x0b; - ans6.s6_addr[14] = 0xf0; - ans6.s6_addr[15] = 0x0d; - evdns_server_request_add_aaaa_reply(req, qname, - 1, &ans6.s6_addr, 2000); - added_any = 1; - } else if (!evutil_ascii_strcasecmp(qname, - "v6assert.example.com")) { - TT_FAIL(("Got a A request for v6assert")); - } - } else if (!evutil_ascii_strcasecmp(qname, - "v6timeout.example.com")) { - if (qtype == EVDNS_TYPE_A) { - ans.s_addr = htonl(0xabcdef01); - evdns_server_request_add_a_reply(req, qname, - 1, &ans.s_addr, 2000); - added_any = 1; - } else if (qtype == EVDNS_TYPE_AAAA) { - /* Let the v6 request time out.*/ - evdns_server_request_drop(req); - return; - } - } else if (!evutil_ascii_strcasecmp(qname, - "v4timeout.example.com")) { - if (qtype == EVDNS_TYPE_AAAA) { - ans6.s6_addr[0] = 0x0a; - ans6.s6_addr[1] = 0x0a; - ans6.s6_addr[14] = 0xff; - ans6.s6_addr[15] = 0x01; - evdns_server_request_add_aaaa_reply(req, qname, - 1, &ans6.s6_addr, 2000); - added_any = 1; - } else if (qtype == EVDNS_TYPE_A) { - /* Let the v4 request time out.*/ - evdns_server_request_drop(req); - return; - } - } else if (!evutil_ascii_strcasecmp(qname, - "v6timeout-nonexist.example.com")) { - if (qtype == EVDNS_TYPE_A) { - /* Fall through, give an nexist. */ - } else if (qtype == EVDNS_TYPE_AAAA) { - /* Let the v6 request time out.*/ - evdns_server_request_drop(req); - return; - } - } else if (!evutil_ascii_strcasecmp(qname, - "all-timeout.example.com")) { - /* drop all requests */ - evdns_server_request_drop(req); - return; - } else { - TT_GRIPE(("Got weird request for %s",qname)); - } - } - if (added_any) { - TT_BLATHER(("answering")); - evdns_server_request_respond(req, 0); - } else { - TT_BLATHER(("saying nexist.")); - evdns_server_request_respond(req, 3); - } -} - -/* Implements a listener for connect_hostname test. */ -static void -nil_accept_cb(struct evconnlistener *l, evutil_socket_t fd, struct sockaddr *s, - int socklen, void *arg) -{ - int *p = arg; - (*p)++; - ++total_n_accepted; - /* don't do anything with the socket; let it close when we exit() */ - if (total_n_accepted >= 3 && total_connected_or_failed >= 5) - event_base_loopexit(be_connect_hostname_base, - NULL); -} - -struct be_conn_hostname_result { - int dnserr; - int what; -}; - -/* Bufferevent event callback for the connect_hostname test: remembers what - * event we got. */ -static void -be_connect_hostname_event_cb(struct bufferevent *bev, short what, void *ctx) -{ - struct be_conn_hostname_result *got = ctx; - if (!got->what) { - TT_BLATHER(("Got a bufferevent event %d", what)); - got->what = what; - - if ((what & BEV_EVENT_CONNECTED) || (what & BEV_EVENT_ERROR)) { - int r; - if ((r = bufferevent_socket_get_dns_error(bev))) { - got->dnserr = r; - TT_BLATHER(("DNS error %d: %s", r, - evutil_gai_strerror(r))); - } ++total_connected_or_failed; - TT_BLATHER(("Got %d connections or errors.", total_connected_or_failed)); - - if (total_n_accepted >= 3 && total_connected_or_failed >= 5) - event_base_loopexit(be_connect_hostname_base, - NULL); - } - } else { - TT_FAIL(("Two events on one bufferevent. %d,%d", - got->what, (int)what)); - } -} - -static void -test_bufferevent_connect_hostname(void *arg) -{ - struct basic_test_data *data = arg; - struct evconnlistener *listener = NULL; - struct bufferevent *be1=NULL, *be2=NULL, *be3=NULL, *be4=NULL, *be5=NULL; - struct be_conn_hostname_result be1_outcome={0,0}, be2_outcome={0,0}, - be3_outcome={0,0}, be4_outcome={0,0}, be5_outcome={0,0}; - int expect_err5; - struct evdns_base *dns=NULL; - struct evdns_server_port *port=NULL; - struct sockaddr_in sin; - int listener_port=-1; - ev_uint16_t dns_port=0; - int n_accept=0, n_dns=0; - char buf[128]; - - be_connect_hostname_base = data->base; - - /* Bind an address and figure out what port it's on. */ - memset(&sin, 0, sizeof(sin)); - sin.sin_family = AF_INET; - sin.sin_addr.s_addr = htonl(0x7f000001); /* 127.0.0.1 */ - sin.sin_port = 0; - listener = evconnlistener_new_bind(data->base, nil_accept_cb, - &n_accept, - LEV_OPT_REUSEABLE|LEV_OPT_CLOSE_ON_EXEC, - -1, (struct sockaddr *)&sin, sizeof(sin)); - tt_assert(listener); - listener_port = regress_get_socket_port( - evconnlistener_get_fd(listener)); - - port = regress_get_dnsserver(data->base, &dns_port, NULL, - be_getaddrinfo_server_cb, &n_dns); - tt_assert(port); - tt_int_op(dns_port, >=, 0); - - /* Start an evdns_base that uses the server as its resolver. */ - dns = evdns_base_new(data->base, 0); - evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)dns_port); - evdns_base_nameserver_ip_add(dns, buf); - - /* Now, finally, at long last, launch the bufferevents. One should do - * a failing lookup IP, one should do a successful lookup by IP, - * and one should do a successful lookup by hostname. */ - be1 = bufferevent_socket_new(data->base, -1, BEV_OPT_CLOSE_ON_FREE); - be2 = bufferevent_socket_new(data->base, -1, BEV_OPT_CLOSE_ON_FREE); - be3 = bufferevent_socket_new(data->base, -1, BEV_OPT_CLOSE_ON_FREE); - be4 = bufferevent_socket_new(data->base, -1, BEV_OPT_CLOSE_ON_FREE); - be5 = bufferevent_socket_new(data->base, -1, BEV_OPT_CLOSE_ON_FREE); - - bufferevent_setcb(be1, NULL, NULL, be_connect_hostname_event_cb, - &be1_outcome); - bufferevent_setcb(be2, NULL, NULL, be_connect_hostname_event_cb, - &be2_outcome); - bufferevent_setcb(be3, NULL, NULL, be_connect_hostname_event_cb, - &be3_outcome); - bufferevent_setcb(be4, NULL, NULL, be_connect_hostname_event_cb, - &be4_outcome); - bufferevent_setcb(be5, NULL, NULL, be_connect_hostname_event_cb, - &be5_outcome); - - /* Launch an async resolve that will fail. */ - tt_assert(!bufferevent_socket_connect_hostname(be1, dns, AF_INET, - "nosuchplace.example.com", listener_port)); - /* Connect to the IP without resolving. */ - tt_assert(!bufferevent_socket_connect_hostname(be2, dns, AF_INET, - "127.0.0.1", listener_port)); - /* Launch an async resolve that will succeed. */ - tt_assert(!bufferevent_socket_connect_hostname(be3, dns, AF_INET, - "nobodaddy.example.com", listener_port)); - /* Use the blocking resolver. This one will fail if your resolver - * can't resolve localhost to 127.0.0.1 */ - tt_assert(!bufferevent_socket_connect_hostname(be4, NULL, AF_INET, - "localhost", listener_port)); - /* Use the blocking resolver with a nonexistent hostname. */ - tt_assert(!bufferevent_socket_connect_hostname(be5, NULL, AF_INET, - "nonesuch.nowhere.example.com", 80)); - { - /* The blocking resolver will use the system nameserver, which - * might tell us anything. (Yes, some twits even pretend that - * example.com is real.) Let's see what answer to expect. */ - struct evutil_addrinfo hints, *ai = NULL; - memset(&hints, 0, sizeof(hints)); - hints.ai_family = AF_INET; - hints.ai_socktype = SOCK_STREAM; - hints.ai_protocol = IPPROTO_TCP; - expect_err5 = evutil_getaddrinfo( - "nonesuch.nowhere.example.com", "80", &hints, &ai); - } - - event_base_dispatch(data->base); - - tt_int_op(be1_outcome.what, ==, BEV_EVENT_ERROR); - tt_int_op(be1_outcome.dnserr, ==, EVUTIL_EAI_NONAME); - tt_int_op(be2_outcome.what, ==, BEV_EVENT_CONNECTED); - tt_int_op(be2_outcome.dnserr, ==, 0); - tt_int_op(be3_outcome.what, ==, BEV_EVENT_CONNECTED); - tt_int_op(be3_outcome.dnserr, ==, 0); - tt_int_op(be4_outcome.what, ==, BEV_EVENT_CONNECTED); - tt_int_op(be4_outcome.dnserr, ==, 0); - if (expect_err5) { - tt_int_op(be5_outcome.what, ==, BEV_EVENT_ERROR); - tt_int_op(be5_outcome.dnserr, ==, expect_err5); - } - - tt_int_op(n_accept, ==, 3); - tt_int_op(n_dns, ==, 2); - -end: - if (listener) - evconnlistener_free(listener); - if (port) - evdns_close_server_port(port); - if (dns) - evdns_base_free(dns, 0); - if (be1) - bufferevent_free(be1); - if (be2) - bufferevent_free(be2); - if (be3) - bufferevent_free(be3); - if (be4) - bufferevent_free(be4); - if (be5) - bufferevent_free(be5); -} - - -struct gai_outcome { - int err; - struct evutil_addrinfo *ai; -}; - -static int n_gai_results_pending = 0; -static struct event_base *exit_base_on_no_pending_results = NULL; - -static void -gai_cb(int err, struct evutil_addrinfo *res, void *ptr) -{ - struct gai_outcome *go = ptr; - go->err = err; - go->ai = res; - if (--n_gai_results_pending <= 0 && exit_base_on_no_pending_results) - event_base_loopexit(exit_base_on_no_pending_results, NULL); - if (n_gai_results_pending < 900) - TT_BLATHER(("Got an answer; expecting %d more.", - n_gai_results_pending)); -} - -static void -cancel_gai_cb(evutil_socket_t fd, short what, void *ptr) -{ - struct evdns_getaddrinfo_request *r = ptr; - evdns_getaddrinfo_cancel(r); -} - -static void -test_getaddrinfo_async(void *arg) -{ - struct basic_test_data *data = arg; - struct evutil_addrinfo hints, *a; - struct gai_outcome local_outcome; - struct gai_outcome a_out[12]; - int i; - struct evdns_getaddrinfo_request *r; - char buf[128]; - struct evdns_server_port *port = NULL; - ev_uint16_t dns_port = 0; - int n_dns_questions = 0; - struct evdns_base *dns_base; - - memset(a_out, 0, sizeof(a_out)); - memset(&local_outcome, 0, sizeof(local_outcome)); - - dns_base = evdns_base_new(data->base, 0); - tt_assert(dns_base); - - /* for localhost */ - evdns_base_load_hosts(dns_base, NULL); - - tt_assert(! evdns_base_set_option(dns_base, "timeout", "0.3")); - tt_assert(! evdns_base_set_option(dns_base, "getaddrinfo-allow-skew", "0.2")); - - n_gai_results_pending = 10000; /* don't think about exiting yet. */ - - /* 1. Try some cases that will never hit the asynchronous resolver. */ - /* 1a. Simple case with a symbolic service name */ - memset(&hints, 0, sizeof(hints)); - hints.ai_family = PF_UNSPEC; - hints.ai_socktype = SOCK_STREAM; - memset(&local_outcome, 0, sizeof(local_outcome)); - r = evdns_getaddrinfo(dns_base, "1.2.3.4", "http", - &hints, gai_cb, &local_outcome); - tt_assert(! r); - if (!local_outcome.err) { - tt_ptr_op(local_outcome.ai,!=,NULL); - test_ai_eq(local_outcome.ai, "1.2.3.4:80", SOCK_STREAM, IPPROTO_TCP); - evutil_freeaddrinfo(local_outcome.ai); - local_outcome.ai = NULL; - } else { - TT_BLATHER(("Apparently we have no getservbyname.")); - } - - /* 1b. EVUTIL_AI_NUMERICHOST is set */ - memset(&hints, 0, sizeof(hints)); - hints.ai_family = PF_UNSPEC; - hints.ai_flags = EVUTIL_AI_NUMERICHOST; - memset(&local_outcome, 0, sizeof(local_outcome)); - r = evdns_getaddrinfo(dns_base, "www.google.com", "80", - &hints, gai_cb, &local_outcome); - tt_ptr_op(r,==,NULL); - tt_int_op(local_outcome.err,==,EVUTIL_EAI_NONAME); - tt_ptr_op(local_outcome.ai,==,NULL); - - /* 1c. We give a numeric address (ipv6) */ - memset(&hints, 0, sizeof(hints)); - memset(&local_outcome, 0, sizeof(local_outcome)); - hints.ai_family = PF_UNSPEC; - hints.ai_protocol = IPPROTO_TCP; - r = evdns_getaddrinfo(dns_base, "f::f", "8008", - &hints, gai_cb, &local_outcome); - tt_assert(!r); - tt_int_op(local_outcome.err,==,0); - tt_assert(local_outcome.ai); - tt_ptr_op(local_outcome.ai->ai_next,==,NULL); - test_ai_eq(local_outcome.ai, "[f::f]:8008", SOCK_STREAM, IPPROTO_TCP); - evutil_freeaddrinfo(local_outcome.ai); - local_outcome.ai = NULL; - - /* 1d. We give a numeric address (ipv4) */ - memset(&hints, 0, sizeof(hints)); - memset(&local_outcome, 0, sizeof(local_outcome)); - hints.ai_family = PF_UNSPEC; - r = evdns_getaddrinfo(dns_base, "5.6.7.8", NULL, - &hints, gai_cb, &local_outcome); - tt_assert(!r); - tt_int_op(local_outcome.err,==,0); - tt_assert(local_outcome.ai); - a = ai_find_by_protocol(local_outcome.ai, IPPROTO_TCP); - tt_assert(a); - test_ai_eq(a, "5.6.7.8", SOCK_STREAM, IPPROTO_TCP); - a = ai_find_by_protocol(local_outcome.ai, IPPROTO_UDP); - tt_assert(a); - test_ai_eq(a, "5.6.7.8", SOCK_DGRAM, IPPROTO_UDP); - evutil_freeaddrinfo(local_outcome.ai); - local_outcome.ai = NULL; - - /* 1e. nodename is NULL (bind) */ - memset(&hints, 0, sizeof(hints)); - memset(&local_outcome, 0, sizeof(local_outcome)); - hints.ai_family = PF_UNSPEC; - hints.ai_socktype = SOCK_DGRAM; - hints.ai_flags = EVUTIL_AI_PASSIVE; - r = evdns_getaddrinfo(dns_base, NULL, "9090", - &hints, gai_cb, &local_outcome); - tt_assert(!r); - tt_int_op(local_outcome.err,==,0); - tt_assert(local_outcome.ai); - /* we should get a v4 address of 0.0.0.0... */ - a = ai_find_by_family(local_outcome.ai, PF_INET); - tt_assert(a); - test_ai_eq(a, "0.0.0.0:9090", SOCK_DGRAM, IPPROTO_UDP); - /* ... and a v6 address of ::0 */ - a = ai_find_by_family(local_outcome.ai, PF_INET6); - tt_assert(a); - test_ai_eq(a, "[::]:9090", SOCK_DGRAM, IPPROTO_UDP); - evutil_freeaddrinfo(local_outcome.ai); - local_outcome.ai = NULL; - - /* 1f. nodename is NULL (connect) */ - memset(&hints, 0, sizeof(hints)); - memset(&local_outcome, 0, sizeof(local_outcome)); - hints.ai_family = PF_UNSPEC; - hints.ai_socktype = SOCK_STREAM; - r = evdns_getaddrinfo(dns_base, NULL, "2", - &hints, gai_cb, &local_outcome); - tt_assert(!r); - tt_int_op(local_outcome.err,==,0); - tt_assert(local_outcome.ai); - /* we should get a v4 address of 127.0.0.1 .... */ - a = ai_find_by_family(local_outcome.ai, PF_INET); - tt_assert(a); - test_ai_eq(a, "127.0.0.1:2", SOCK_STREAM, IPPROTO_TCP); - /* ... and a v6 address of ::1 */ - a = ai_find_by_family(local_outcome.ai, PF_INET6); - tt_assert(a); - test_ai_eq(a, "[::1]:2", SOCK_STREAM, IPPROTO_TCP); - evutil_freeaddrinfo(local_outcome.ai); - local_outcome.ai = NULL; - - /* 1g. We find localhost immediately. (pf_unspec) */ - memset(&hints, 0, sizeof(hints)); - memset(&local_outcome, 0, sizeof(local_outcome)); - hints.ai_family = PF_UNSPEC; - hints.ai_socktype = SOCK_STREAM; - r = evdns_getaddrinfo(dns_base, "LOCALHOST", "80", - &hints, gai_cb, &local_outcome); - tt_assert(!r); - tt_int_op(local_outcome.err,==,0); - tt_assert(local_outcome.ai); - /* we should get a v4 address of 127.0.0.1 .... */ - a = ai_find_by_family(local_outcome.ai, PF_INET); - tt_assert(a); - test_ai_eq(a, "127.0.0.1:80", SOCK_STREAM, IPPROTO_TCP); - /* ... and a v6 address of ::1 */ - a = ai_find_by_family(local_outcome.ai, PF_INET6); - tt_assert(a); - test_ai_eq(a, "[::1]:80", SOCK_STREAM, IPPROTO_TCP); - evutil_freeaddrinfo(local_outcome.ai); - local_outcome.ai = NULL; - - /* 1g. We find localhost immediately. (pf_inet6) */ - memset(&hints, 0, sizeof(hints)); - memset(&local_outcome, 0, sizeof(local_outcome)); - hints.ai_family = PF_INET6; - hints.ai_socktype = SOCK_STREAM; - r = evdns_getaddrinfo(dns_base, "LOCALHOST", "9999", - &hints, gai_cb, &local_outcome); - tt_assert(! r); - tt_int_op(local_outcome.err,==,0); - tt_assert(local_outcome.ai); - a = local_outcome.ai; - test_ai_eq(a, "[::1]:9999", SOCK_STREAM, IPPROTO_TCP); - tt_ptr_op(a->ai_next, ==, NULL); - evutil_freeaddrinfo(local_outcome.ai); - local_outcome.ai = NULL; - - /* 2. Okay, now we can actually test the asynchronous resolver. */ - /* Start a dummy local dns server... */ - port = regress_get_dnsserver(data->base, &dns_port, NULL, - be_getaddrinfo_server_cb, &n_dns_questions); - tt_assert(port); - tt_int_op(dns_port, >=, 0); - /* ... and tell the evdns_base about it. */ - evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", dns_port); - evdns_base_nameserver_ip_add(dns_base, buf); - - memset(&hints, 0, sizeof(hints)); - hints.ai_family = PF_UNSPEC; - hints.ai_socktype = SOCK_STREAM; - hints.ai_flags = EVUTIL_AI_CANONNAME; - /* 0: Request for both.example.com should return both addresses. */ - r = evdns_getaddrinfo(dns_base, "both.example.com", "8000", - &hints, gai_cb, &a_out[0]); - tt_assert(r); - - /* 1: Request for v4only.example.com should return one address. */ - r = evdns_getaddrinfo(dns_base, "v4only.example.com", "8001", - &hints, gai_cb, &a_out[1]); - tt_assert(r); - - /* 2: Request for v6only.example.com should return one address. */ - hints.ai_flags = 0; - r = evdns_getaddrinfo(dns_base, "v6only.example.com", "8002", - &hints, gai_cb, &a_out[2]); - tt_assert(r); - - /* 3: PF_INET request for v4assert.example.com should not generate a - * v6 request. The server will fail the test if it does. */ - hints.ai_family = PF_INET; - r = evdns_getaddrinfo(dns_base, "v4assert.example.com", "8003", - &hints, gai_cb, &a_out[3]); - tt_assert(r); - - /* 4: PF_INET6 request for v6assert.example.com should not generate a - * v4 request. The server will fail the test if it does. */ - hints.ai_family = PF_INET6; - r = evdns_getaddrinfo(dns_base, "v6assert.example.com", "8004", - &hints, gai_cb, &a_out[4]); - tt_assert(r); - - /* 5: PF_INET request for nosuchplace.example.com should give NEXIST. */ - hints.ai_family = PF_INET; - r = evdns_getaddrinfo(dns_base, "nosuchplace.example.com", "8005", - &hints, gai_cb, &a_out[5]); - tt_assert(r); - - /* 6: PF_UNSPEC request for nosuchplace.example.com should give NEXIST. - */ - hints.ai_family = PF_UNSPEC; - r = evdns_getaddrinfo(dns_base, "nosuchplace.example.com", "8006", - &hints, gai_cb, &a_out[6]); - tt_assert(r); - - /* 7: PF_UNSPEC request for v6timeout.example.com should give an ipv4 - * address only. */ - hints.ai_family = PF_UNSPEC; - r = evdns_getaddrinfo(dns_base, "v6timeout.example.com", "8007", - &hints, gai_cb, &a_out[7]); - tt_assert(r); - - /* 8: PF_UNSPEC request for v6timeout-nonexist.example.com should give - * a NEXIST */ - hints.ai_family = PF_UNSPEC; - r = evdns_getaddrinfo(dns_base, "v6timeout-nonexist.example.com", - "8008", &hints, gai_cb, &a_out[8]); - tt_assert(r); - - /* 9: AI_ADDRCONFIG should at least not crash. Can't test it more - * without knowing what kind of internet we have. */ - hints.ai_flags |= EVUTIL_AI_ADDRCONFIG; - r = evdns_getaddrinfo(dns_base, "both.example.com", - "8009", &hints, gai_cb, &a_out[9]); - tt_assert(r); - - /* 10: PF_UNSPEC for v4timeout.example.com should give an ipv6 address - * only. */ - hints.ai_family = PF_UNSPEC; - hints.ai_flags = 0; - r = evdns_getaddrinfo(dns_base, "v4timeout.example.com", "8010", - &hints, gai_cb, &a_out[10]); - tt_assert(r); - - /* 11: timeout.example.com: cancel it after 100 msec. */ - r = evdns_getaddrinfo(dns_base, "all-timeout.example.com", "8011", - &hints, gai_cb, &a_out[11]); - tt_assert(r); - { - struct timeval tv; - tv.tv_sec = 0; - tv.tv_usec = 100*1000; /* 100 msec */ - event_base_once(data->base, -1, EV_TIMEOUT, cancel_gai_cb, - r, &tv); - } - - /* XXXXX There are more tests we could do, including: - - - A test to elicit NODATA. - - */ - - n_gai_results_pending = 12; - exit_base_on_no_pending_results = data->base; - - event_base_dispatch(data->base); - - /* 0: both.example.com */ - tt_int_op(a_out[0].err, ==, 0); - tt_assert(a_out[0].ai); - tt_assert(a_out[0].ai->ai_next); - tt_assert(!a_out[0].ai->ai_next->ai_next); - a = ai_find_by_family(a_out[0].ai, PF_INET); - tt_assert(a); - test_ai_eq(a, "80.80.32.32:8000", SOCK_STREAM, IPPROTO_TCP); - a = ai_find_by_family(a_out[0].ai, PF_INET6); - tt_assert(a); - test_ai_eq(a, "[80ff::bbbb]:8000", SOCK_STREAM, IPPROTO_TCP); - tt_assert(a_out[0].ai->ai_canonname); - tt_str_op(a_out[0].ai->ai_canonname, ==, "both-canonical.example.com"); - - /* 1: v4only.example.com */ - tt_int_op(a_out[1].err, ==, 0); - tt_assert(a_out[1].ai); - tt_assert(! a_out[1].ai->ai_next); - test_ai_eq(a_out[1].ai, "18.52.86.120:8001", SOCK_STREAM, IPPROTO_TCP); - tt_assert(a_out[1].ai->ai_canonname == NULL); - - - /* 2: v6only.example.com */ - tt_int_op(a_out[2].err, ==, 0); - tt_assert(a_out[2].ai); - tt_assert(! a_out[2].ai->ai_next); - test_ai_eq(a_out[2].ai, "[b0b::f00d]:8002", SOCK_STREAM, IPPROTO_TCP); - - /* 3: v4assert.example.com */ - tt_int_op(a_out[3].err, ==, 0); - tt_assert(a_out[3].ai); - tt_assert(! a_out[3].ai->ai_next); - test_ai_eq(a_out[3].ai, "18.52.86.120:8003", SOCK_STREAM, IPPROTO_TCP); - - /* 4: v6assert.example.com */ - tt_int_op(a_out[4].err, ==, 0); - tt_assert(a_out[4].ai); - tt_assert(! a_out[4].ai->ai_next); - test_ai_eq(a_out[4].ai, "[b0b::f00d]:8004", SOCK_STREAM, IPPROTO_TCP); - - /* 5: nosuchplace.example.com (inet) */ - tt_int_op(a_out[5].err, ==, EVUTIL_EAI_NONAME); - tt_assert(! a_out[5].ai); - - /* 6: nosuchplace.example.com (unspec) */ - tt_int_op(a_out[6].err, ==, EVUTIL_EAI_NONAME); - tt_assert(! a_out[6].ai); - - /* 7: v6timeout.example.com */ - tt_int_op(a_out[7].err, ==, 0); - tt_assert(a_out[7].ai); - tt_assert(! a_out[7].ai->ai_next); - test_ai_eq(a_out[7].ai, "171.205.239.1:8007", SOCK_STREAM, IPPROTO_TCP); - - /* 8: v6timeout-nonexist.example.com */ - tt_int_op(a_out[8].err, ==, EVUTIL_EAI_NONAME); - tt_assert(! a_out[8].ai); - - /* 9: both (ADDRCONFIG) */ - tt_int_op(a_out[9].err, ==, 0); - tt_assert(a_out[9].ai); - a = ai_find_by_family(a_out[9].ai, PF_INET); - if (a) - test_ai_eq(a, "80.80.32.32:8009", SOCK_STREAM, IPPROTO_TCP); - else - tt_assert(ai_find_by_family(a_out[9].ai, PF_INET6)); - a = ai_find_by_family(a_out[9].ai, PF_INET6); - if (a) - test_ai_eq(a, "[80ff::bbbb]:8009", SOCK_STREAM, IPPROTO_TCP); - else - tt_assert(ai_find_by_family(a_out[9].ai, PF_INET)); - - /* 10: v4timeout.example.com */ - tt_int_op(a_out[10].err, ==, 0); - tt_assert(a_out[10].ai); - tt_assert(! a_out[10].ai->ai_next); - test_ai_eq(a_out[10].ai, "[a0a::ff01]:8010", SOCK_STREAM, IPPROTO_TCP); - - /* 11: cancelled request. */ - tt_int_op(a_out[11].err, ==, EVUTIL_EAI_CANCEL); - tt_assert(a_out[11].ai == NULL); - -end: - if (local_outcome.ai) - evutil_freeaddrinfo(local_outcome.ai); - for (i=0;i<(int)ARRAY_SIZE(a_out);++i) { - if (a_out[i].ai) - evutil_freeaddrinfo(a_out[i].ai); - } - if (port) - evdns_close_server_port(port); - if (dns_base) - evdns_base_free(dns_base, 0); -} - -struct gaic_request_status { - int magic; - struct event_base *base; - struct evdns_base *dns_base; - struct evdns_getaddrinfo_request *request; - struct event cancel_event; - int canceled; -}; - -#define GAIC_MAGIC 0x1234abcd - -static int pending = 0; - -static void -gaic_cancel_request_cb(evutil_socket_t fd, short what, void *arg) -{ - struct gaic_request_status *status = arg; - - tt_assert(status->magic == GAIC_MAGIC); - status->canceled = 1; - evdns_getaddrinfo_cancel(status->request); - return; -end: - event_base_loopexit(status->base, NULL); -} - -static void -gaic_server_cb(struct evdns_server_request *req, void *arg) -{ - ev_uint32_t answer = 0x7f000001; - tt_assert(req->nquestions); - evdns_server_request_add_a_reply(req, req->questions[0]->name, 1, - &answer, 100); - evdns_server_request_respond(req, 0); - return; -end: - evdns_server_request_respond(req, DNS_ERR_REFUSED); -} - - -static void -gaic_getaddrinfo_cb(int result, struct evutil_addrinfo *res, void *arg) -{ - struct gaic_request_status *status = arg; - struct event_base *base = status->base; - tt_assert(status->magic == GAIC_MAGIC); - - if (result == EVUTIL_EAI_CANCEL) { - tt_assert(status->canceled); - } - event_del(&status->cancel_event); - - memset(status, 0xf0, sizeof(*status)); - free(status); - -end: - if (--pending <= 0) - event_base_loopexit(base, NULL); -} - -static void -gaic_launch(struct event_base *base, struct evdns_base *dns_base) -{ - struct gaic_request_status *status = calloc(1,sizeof(*status)); - struct timeval tv = { 0, 10000 }; - status->magic = GAIC_MAGIC; - status->base = base; - status->dns_base = dns_base; - event_assign(&status->cancel_event, base, -1, 0, gaic_cancel_request_cb, - status); - status->request = evdns_getaddrinfo(dns_base, - "foobar.bazquux.example.com", "80", NULL, gaic_getaddrinfo_cb, - status); - event_add(&status->cancel_event, &tv); - ++pending; -} - -#ifdef EVENT_SET_MEM_FUNCTIONS_IMPLEMENTED -/* FIXME: We should move this to regress_main.c if anything else needs it.*/ - -/* Trivial replacements for malloc/free/realloc to check for memory leaks. - * Not threadsafe. */ -static int allocated_chunks = 0; - -static void * -cnt_malloc(size_t sz) -{ - allocated_chunks += 1; - return malloc(sz); -} - -static void * -cnt_realloc(void *old, size_t sz) -{ - if (!old) - allocated_chunks += 1; - if (!sz) - allocated_chunks -= 1; - return realloc(old, sz); -} - -static void -cnt_free(void *ptr) -{ - allocated_chunks -= 1; - free(ptr); -} - -struct testleak_env_t { - struct event_base *base; - struct evdns_base *dns_base; - struct evdns_request *req; - struct generic_dns_callback_result r; -}; - -static void * -testleak_setup(const struct testcase_t *testcase) -{ - struct testleak_env_t *env; - - allocated_chunks = 0; - - /* Reset allocation counter, to start allocations from the very beginning. - * (this will avoid false-positive negative numbers for allocated_chunks) - */ - libevent_global_shutdown(); - - event_set_mem_functions(cnt_malloc, cnt_realloc, cnt_free); - - event_enable_debug_mode(); - - /* not mm_calloc: we don't want to mess with the count. */ - env = calloc(1, sizeof(struct testleak_env_t)); - env->base = event_base_new(); - env->dns_base = evdns_base_new(env->base, 0); - env->req = evdns_base_resolve_ipv4( - env->dns_base, "example.com", DNS_QUERY_NO_SEARCH, - generic_dns_callback, &env->r); - return env; -} - -static int -testleak_cleanup(const struct testcase_t *testcase, void *env_) -{ - int ok = 0; - struct testleak_env_t *env = env_; - tt_assert(env); -#ifdef EVENT__DISABLE_DEBUG_MODE - tt_int_op(allocated_chunks, ==, 0); -#else - libevent_global_shutdown(); - tt_int_op(allocated_chunks, ==, 0); -#endif - ok = 1; -end: - if (env) { - if (env->dns_base) - evdns_base_free(env->dns_base, 0); - if (env->base) - event_base_free(env->base); - free(env); - } - return ok; -} - -static struct testcase_setup_t testleak_funcs = { - testleak_setup, testleak_cleanup -}; - -static void -test_dbg_leak_cancel(void *env_) -{ - /* cancel, loop, free/dns, free/base */ - struct testleak_env_t *env = env_; - int send_err_shutdown = 1; - evdns_cancel_request(env->dns_base, env->req); - env->req = 0; - - /* `req` is freed in callback, that's why one loop is required. */ - event_base_loop(env->base, EVLOOP_NONBLOCK); - - /* send_err_shutdown means nothing as soon as our request is - * already canceled */ - evdns_base_free(env->dns_base, send_err_shutdown); - env->dns_base = 0; - event_base_free(env->base); - env->base = 0; -} - -static void -dbg_leak_resume(void *env_, int cancel, int send_err_shutdown) -{ - /* cancel, loop, free/dns, free/base */ - struct testleak_env_t *env = env_; - if (cancel) { - evdns_cancel_request(env->dns_base, env->req); - tt_assert(!evdns_base_resume(env->dns_base)); - } else { - /* TODO: No nameservers, request can't be processed, must be errored */ - tt_assert(!evdns_base_resume(env->dns_base)); - } - - event_base_loop(env->base, EVLOOP_NONBLOCK); - /** - * Because we don't cancel request, and want our callback to recieve - * DNS_ERR_SHUTDOWN, we use deferred callback, and there was: - * - one extra malloc(), - * @see reply_schedule_callback() - * - and one missing free - * @see request_finished() (req->handle->pending_cb = 1) - * than we don't need to count in testleak_cleanup(), but we can clean them - * if we will run loop once again, but *after* evdns base freed. - */ - evdns_base_free(env->dns_base, send_err_shutdown); - env->dns_base = 0; - event_base_loop(env->base, EVLOOP_NONBLOCK); - -end: - event_base_free(env->base); - env->base = 0; -} - -#define IMPL_DBG_LEAK_RESUME(name, cancel, send_err_shutdown) \ - static void \ - test_dbg_leak_##name##_(void *env_) \ - { \ - dbg_leak_resume(env_, cancel, send_err_shutdown); \ - } -IMPL_DBG_LEAK_RESUME(resume, 0, 0) -IMPL_DBG_LEAK_RESUME(cancel_and_resume, 1, 0) -IMPL_DBG_LEAK_RESUME(resume_send_err, 0, 1) -IMPL_DBG_LEAK_RESUME(cancel_and_resume_send_err, 1, 1) - -static void -test_dbg_leak_shutdown(void *env_) -{ - /* free/dns, loop, free/base */ - struct testleak_env_t *env = env_; - int send_err_shutdown = 1; - - /* `req` is freed both with `send_err_shutdown` and without it, - * the only difference is `evdns_callback` call */ - env->req = 0; - - evdns_base_free(env->dns_base, send_err_shutdown); - env->dns_base = 0; - - /* `req` is freed in callback, that's why one loop is required */ - event_base_loop(env->base, EVLOOP_NONBLOCK); - event_base_free(env->base); - env->base = 0; -} -#endif - -static void -test_getaddrinfo_async_cancel_stress(void *ptr) -{ - struct event_base *base; - struct evdns_base *dns_base = NULL; - struct evdns_server_port *server = NULL; - evutil_socket_t fd = -1; - struct sockaddr_in sin; - struct sockaddr_storage ss; - ev_socklen_t slen; - int i; - - base = event_base_new(); - dns_base = evdns_base_new(base, 0); - - memset(&sin, 0, sizeof(sin)); - sin.sin_family = AF_INET; - sin.sin_port = 0; - sin.sin_addr.s_addr = htonl(0x7f000001); - if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { - tt_abort_perror("socket"); - } - evutil_make_socket_nonblocking(fd); - if (bind(fd, (struct sockaddr*)&sin, sizeof(sin))<0) { - tt_abort_perror("bind"); - } - server = evdns_add_server_port_with_base(base, fd, 0, gaic_server_cb, - base); - - memset(&ss, 0, sizeof(ss)); - slen = sizeof(ss); - if (getsockname(fd, (struct sockaddr*)&ss, &slen)<0) { - tt_abort_perror("getsockname"); - } - evdns_base_nameserver_sockaddr_add(dns_base, - (struct sockaddr*)&ss, slen, 0); - - for (i = 0; i < 1000; ++i) { - gaic_launch(base, dns_base); - } - - event_base_dispatch(base); - -end: - if (dns_base) - evdns_base_free(dns_base, 1); - if (server) - evdns_close_server_port(server); - if (base) - event_base_free(base); - if (fd >= 0) - evutil_closesocket(fd); -} - -static void -dns_client_fail_requests_test(void *arg) -{ - struct basic_test_data *data = arg; - struct event_base *base = data->base; - struct evdns_base *dns = NULL; - struct evdns_server_port *dns_port = NULL; - ev_uint16_t portnum = 0; - char buf[64]; - - struct generic_dns_callback_result r[20]; - int i; - - dns_port = regress_get_dnsserver(base, &portnum, NULL, - regress_dns_server_cb, reissue_table); - tt_assert(dns_port); - - evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum); - - dns = evdns_base_new(base, EVDNS_BASE_DISABLE_WHEN_INACTIVE); - tt_assert(!evdns_base_nameserver_ip_add(dns, buf)); - - for (i = 0; i < 20; ++i) - evdns_base_resolve_ipv4(dns, "foof.example.com", 0, generic_dns_callback, &r[i]); - - n_replies_left = 20; - exit_base = base; - - evdns_base_free(dns, 1 /** fail requests */); - /** run defered callbacks, to trigger UAF */ - event_base_dispatch(base); - - tt_int_op(n_replies_left, ==, 0); - for (i = 0; i < 20; ++i) - tt_int_op(r[i].result, ==, DNS_ERR_SHUTDOWN); - -end: - evdns_close_server_port(dns_port); -} - -static void -getaddrinfo_cb(int err, struct evutil_addrinfo *res, void *ptr) -{ - generic_dns_callback(err, 0, 0, 0, NULL, ptr); -} -static void -dns_client_fail_requests_getaddrinfo_test(void *arg) -{ - struct basic_test_data *data = arg; - struct event_base *base = data->base; - struct evdns_base *dns = NULL; - struct evdns_server_port *dns_port = NULL; - ev_uint16_t portnum = 0; - char buf[64]; - - struct generic_dns_callback_result r[20]; - int i; - - dns_port = regress_get_dnsserver(base, &portnum, NULL, - regress_dns_server_cb, reissue_table); - tt_assert(dns_port); - - evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum); - - dns = evdns_base_new(base, EVDNS_BASE_DISABLE_WHEN_INACTIVE); - tt_assert(!evdns_base_nameserver_ip_add(dns, buf)); - - for (i = 0; i < 20; ++i) - tt_assert(evdns_getaddrinfo(dns, "foof.example.com", "http", NULL, getaddrinfo_cb, &r[i])); - - n_replies_left = 20; - exit_base = base; - - evdns_base_free(dns, 1 /** fail requests */); - /** run defered callbacks, to trigger UAF */ - event_base_dispatch(base); - - tt_int_op(n_replies_left, ==, 0); - for (i = 0; i < 20; ++i) - tt_int_op(r[i].result, ==, EVUTIL_EAI_FAIL); - -end: - evdns_close_server_port(dns_port); -} - - -#define DNS_LEGACY(name, flags) \ - { #name, run_legacy_test_fn, flags|TT_LEGACY, &legacy_setup, \ - dns_##name } - -struct testcase_t dns_testcases[] = { - DNS_LEGACY(server, TT_FORK|TT_NEED_BASE), - DNS_LEGACY(gethostbyname, TT_FORK|TT_NEED_BASE|TT_NEED_DNS|TT_OFF_BY_DEFAULT), - DNS_LEGACY(gethostbyname6, TT_FORK|TT_NEED_BASE|TT_NEED_DNS|TT_OFF_BY_DEFAULT), - DNS_LEGACY(gethostbyaddr, TT_FORK|TT_NEED_BASE|TT_NEED_DNS|TT_OFF_BY_DEFAULT), - { "resolve_reverse", dns_resolve_reverse, TT_FORK|TT_OFF_BY_DEFAULT, NULL, NULL }, - { "search", dns_search_test, TT_FORK|TT_NEED_BASE, &basic_setup, NULL }, - { "search_lower", dns_search_lower_test, TT_FORK|TT_NEED_BASE, &basic_setup, NULL }, - { "search_cancel", dns_search_cancel_test, - TT_FORK|TT_NEED_BASE, &basic_setup, NULL }, - { "retry", dns_retry_test, TT_FORK|TT_NEED_BASE|TT_NO_LOGS, &basic_setup, NULL }, - { "retry_disable_when_inactive", dns_retry_disable_when_inactive_test, - TT_FORK|TT_NEED_BASE|TT_NO_LOGS, &basic_setup, NULL }, - { "reissue", dns_reissue_test, TT_FORK|TT_NEED_BASE|TT_NO_LOGS, &basic_setup, NULL }, - { "reissue_disable_when_inactive", dns_reissue_disable_when_inactive_test, - TT_FORK|TT_NEED_BASE|TT_NO_LOGS, &basic_setup, NULL }, - { "inflight", dns_inflight_test, TT_FORK|TT_NEED_BASE, &basic_setup, NULL }, - { "bufferevent_connect_hostname", test_bufferevent_connect_hostname, - TT_FORK|TT_NEED_BASE, &basic_setup, NULL }, - { "disable_when_inactive", dns_disable_when_inactive_test, - TT_FORK|TT_NEED_BASE, &basic_setup, NULL }, - { "disable_when_inactive_no_ns", dns_disable_when_inactive_no_ns_test, - TT_FORK|TT_NEED_BASE, &basic_setup, NULL }, - - { "getaddrinfo_async", test_getaddrinfo_async, - TT_FORK|TT_NEED_BASE, &basic_setup, (char*)"" }, - { "getaddrinfo_cancel_stress", test_getaddrinfo_async_cancel_stress, - TT_FORK, NULL, NULL }, - -#ifdef EVENT_SET_MEM_FUNCTIONS_IMPLEMENTED - { "leak_shutdown", test_dbg_leak_shutdown, TT_FORK, &testleak_funcs, NULL }, - { "leak_cancel", test_dbg_leak_cancel, TT_FORK, &testleak_funcs, NULL }, - - { "leak_resume", test_dbg_leak_resume_, TT_FORK, &testleak_funcs, NULL }, - { "leak_cancel_and_resume", test_dbg_leak_cancel_and_resume_, - TT_FORK, &testleak_funcs, NULL }, - { "leak_resume_send_err", test_dbg_leak_resume_send_err_, - TT_FORK, &testleak_funcs, NULL }, - { "leak_cancel_and_resume_send_err", test_dbg_leak_cancel_and_resume_send_err_, - TT_FORK, &testleak_funcs, NULL }, -#endif - - { "client_fail_requests", dns_client_fail_requests_test, - TT_FORK|TT_NEED_BASE, &basic_setup, NULL }, - { "client_fail_requests_getaddrinfo", - dns_client_fail_requests_getaddrinfo_test, - TT_FORK|TT_NEED_BASE, &basic_setup, NULL }, - - END_OF_TESTCASES -}; - |