michael@0: /*
michael@0:  * Copyright (c) 2003-2007 Niels Provos <provos@citi.umich.edu>
michael@0:  * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
michael@0:  *
michael@0:  * Redistribution and use in source and binary forms, with or without
michael@0:  * modification, are permitted provided that the following conditions
michael@0:  * are met:
michael@0:  * 1. Redistributions of source code must retain the above copyright
michael@0:  *    notice, this list of conditions and the following disclaimer.
michael@0:  * 2. Redistributions in binary form must reproduce the above copyright
michael@0:  *    notice, this list of conditions and the following disclaimer in the
michael@0:  *    documentation and/or other materials provided with the distribution.
michael@0:  * 3. The name of the author may not be used to endorse or promote products
michael@0:  *    derived from this software without specific prior written permission.
michael@0:  *
michael@0:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
michael@0:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
michael@0:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
michael@0:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
michael@0:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
michael@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
michael@0:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
michael@0:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
michael@0:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
michael@0:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0:  */
michael@0: 
michael@0: #ifdef WIN32
michael@0: #include <winsock2.h>
michael@0: #include <windows.h>
michael@0: #include <ws2tcpip.h>
michael@0: #endif
michael@0: 
michael@0: #include "event2/event-config.h"
michael@0: 
michael@0: #include <sys/types.h>
michael@0: #include <sys/stat.h>
michael@0: #ifdef _EVENT_HAVE_SYS_TIME_H
michael@0: #include <sys/time.h>
michael@0: #endif
michael@0: #include <sys/queue.h>
michael@0: #ifndef WIN32
michael@0: #include <sys/socket.h>
michael@0: #include <signal.h>
michael@0: #include <netinet/in.h>
michael@0: #include <arpa/inet.h>
michael@0: #include <unistd.h>
michael@0: #endif
michael@0: #ifdef _EVENT_HAVE_NETINET_IN6_H
michael@0: #include <netinet/in6.h>
michael@0: #endif
michael@0: #ifdef HAVE_NETDB_H
michael@0: #include <netdb.h>
michael@0: #endif
michael@0: #include <fcntl.h>
michael@0: #include <stdlib.h>
michael@0: #include <stdio.h>
michael@0: #include <string.h>
michael@0: #include <errno.h>
michael@0: 
michael@0: #include "event2/dns.h"
michael@0: #include "event2/dns_compat.h"
michael@0: #include "event2/dns_struct.h"
michael@0: #include "event2/event.h"
michael@0: #include "event2/event_compat.h"
michael@0: #include "event2/event_struct.h"
michael@0: #include "event2/util.h"
michael@0: #include "event2/listener.h"
michael@0: #include "event2/bufferevent.h"
michael@0: #include "log-internal.h"
michael@0: #include "regress.h"
michael@0: #include "regress_testutils.h"
michael@0: 
michael@0: #include "../util-internal.h"
michael@0: 
michael@0: static int dns_ok = 0;
michael@0: static int dns_got_cancel = 0;
michael@0: static int dns_err = 0;
michael@0: 
michael@0: 
michael@0: static void
michael@0: dns_gethostbyname_cb(int result, char type, int count, int ttl,
michael@0:     void *addresses, void *arg)
michael@0: {
michael@0: 	dns_ok = dns_err = 0;
michael@0: 
michael@0: 	if (result == DNS_ERR_TIMEOUT) {
michael@0: 		printf("[Timed out] ");
michael@0: 		dns_err = result;
michael@0: 		goto out;
michael@0: 	}
michael@0: 
michael@0: 	if (result != DNS_ERR_NONE) {
michael@0: 		printf("[Error code %d] ", result);
michael@0: 		goto out;
michael@0: 	}
michael@0: 
michael@0: 	TT_BLATHER(("type: %d, count: %d, ttl: %d: ", type, count, ttl));
michael@0: 
michael@0: 	switch (type) {
michael@0: 	case DNS_IPv6_AAAA: {
michael@0: #if defined(_EVENT_HAVE_STRUCT_IN6_ADDR) && defined(_EVENT_HAVE_INET_NTOP) && defined(INET6_ADDRSTRLEN)
michael@0: 		struct in6_addr *in6_addrs = addresses;
michael@0: 		char buf[INET6_ADDRSTRLEN+1];
michael@0: 		int i;
michael@0: 		/* a resolution that's not valid does not help */
michael@0: 		if (ttl < 0)
michael@0: 			goto out;
michael@0: 		for (i = 0; i < count; ++i) {
michael@0: 			const char *b = evutil_inet_ntop(AF_INET6, &in6_addrs[i], buf,sizeof(buf));
michael@0: 			if (b)
michael@0: 				TT_BLATHER(("%s ", b));
michael@0: 			else
michael@0: 				TT_BLATHER(("%s ", strerror(errno)));
michael@0: 		}
michael@0: #endif
michael@0: 		break;
michael@0: 	}
michael@0: 	case DNS_IPv4_A: {
michael@0: 		struct in_addr *in_addrs = addresses;
michael@0: 		int i;
michael@0: 		/* a resolution that's not valid does not help */
michael@0: 		if (ttl < 0)
michael@0: 			goto out;
michael@0: 		for (i = 0; i < count; ++i)
michael@0: 			TT_BLATHER(("%s ", inet_ntoa(in_addrs[i])));
michael@0: 		break;
michael@0: 	}
michael@0: 	case DNS_PTR:
michael@0: 		/* may get at most one PTR */
michael@0: 		if (count != 1)
michael@0: 			goto out;
michael@0: 
michael@0: 		TT_BLATHER(("%s ", *(char **)addresses));
michael@0: 		break;
michael@0: 	default:
michael@0: 		goto out;
michael@0: 	}
michael@0: 
michael@0: 	dns_ok = type;
michael@0: 
michael@0: out:
michael@0: 	if (arg == NULL)
michael@0: 		event_loopexit(NULL);
michael@0: 	else
michael@0: 		event_base_loopexit((struct event_base *)arg, NULL);
michael@0: }
michael@0: 
michael@0: static void
michael@0: dns_gethostbyname(void)
michael@0: {
michael@0: 	dns_ok = 0;
michael@0: 	evdns_resolve_ipv4("www.monkey.org", 0, dns_gethostbyname_cb, NULL);
michael@0: 	event_dispatch();
michael@0: 
michael@0: 	tt_int_op(dns_ok, ==, DNS_IPv4_A);
michael@0: 	test_ok = dns_ok;
michael@0: end:
michael@0: 	;
michael@0: }
michael@0: 
michael@0: static void
michael@0: dns_gethostbyname6(void)
michael@0: {
michael@0: 	dns_ok = 0;
michael@0: 	evdns_resolve_ipv6("www.ietf.org", 0, dns_gethostbyname_cb, NULL);
michael@0: 	event_dispatch();
michael@0: 
michael@0: 	if (!dns_ok && dns_err == DNS_ERR_TIMEOUT) {
michael@0: 		tt_skip();
michael@0: 	}
michael@0: 
michael@0: 	tt_int_op(dns_ok, ==, DNS_IPv6_AAAA);
michael@0: 	test_ok = 1;
michael@0: end:
michael@0: 	;
michael@0: }
michael@0: 
michael@0: static void
michael@0: dns_gethostbyaddr(void)
michael@0: {
michael@0: 	struct in_addr in;
michael@0: 	in.s_addr = htonl(0x7f000001ul); /* 127.0.0.1 */
michael@0: 	dns_ok = 0;
michael@0: 	evdns_resolve_reverse(&in, 0, dns_gethostbyname_cb, NULL);
michael@0: 	event_dispatch();
michael@0: 
michael@0: 	tt_int_op(dns_ok, ==, DNS_PTR);
michael@0: 	test_ok = dns_ok;
michael@0: end:
michael@0: 	;
michael@0: }
michael@0: 
michael@0: static void
michael@0: dns_resolve_reverse(void *ptr)
michael@0: {
michael@0: 	struct in_addr in;
michael@0: 	struct event_base *base = event_base_new();
michael@0: 	struct evdns_base *dns = evdns_base_new(base, 1/* init name servers */);
michael@0: 	struct evdns_request *req = NULL;
michael@0: 
michael@0: 	tt_assert(base);
michael@0: 	tt_assert(dns);
michael@0: 	in.s_addr = htonl(0x7f000001ul); /* 127.0.0.1 */
michael@0: 	dns_ok = 0;
michael@0: 
michael@0: 	req = evdns_base_resolve_reverse(
michael@0: 		dns, &in, 0, dns_gethostbyname_cb, base);
michael@0: 	tt_assert(req);
michael@0: 
michael@0: 	event_base_dispatch(base);
michael@0: 
michael@0: 	tt_int_op(dns_ok, ==, DNS_PTR);
michael@0: 
michael@0: end:
michael@0: 	if (dns)
michael@0: 		evdns_base_free(dns, 0);
michael@0: 	if (base)
michael@0: 		event_base_free(base);
michael@0: }
michael@0: 
michael@0: static int n_server_responses = 0;
michael@0: 
michael@0: static void
michael@0: dns_server_request_cb(struct evdns_server_request *req, void *data)
michael@0: {
michael@0: 	int i, r;
michael@0: 	const char TEST_ARPA[] = "11.11.168.192.in-addr.arpa";
michael@0: 	const char TEST_IN6[] =
michael@0: 	    "f.e.f.e." "0.0.0.0." "0.0.0.0." "1.1.1.1."
michael@0: 	    "a.a.a.a." "0.0.0.0." "0.0.0.0." "0.f.f.f.ip6.arpa";
michael@0: 
michael@0: 	for (i = 0; i < req->nquestions; ++i) {
michael@0: 		const int qtype = req->questions[i]->type;
michael@0: 		const int qclass = req->questions[i]->dns_question_class;
michael@0: 		const char *qname = req->questions[i]->name;
michael@0: 
michael@0: 		struct in_addr ans;
michael@0: 		ans.s_addr = htonl(0xc0a80b0bUL); /* 192.168.11.11 */
michael@0: 		if (qtype == EVDNS_TYPE_A &&
michael@0: 		    qclass == EVDNS_CLASS_INET &&
michael@0: 		    !evutil_ascii_strcasecmp(qname, "zz.example.com")) {
michael@0: 			r = evdns_server_request_add_a_reply(req, qname,
michael@0: 			    1, &ans.s_addr, 12345);
michael@0: 			if (r<0)
michael@0: 				dns_ok = 0;
michael@0: 		} else if (qtype == EVDNS_TYPE_AAAA &&
michael@0: 		    qclass == EVDNS_CLASS_INET &&
michael@0: 		    !evutil_ascii_strcasecmp(qname, "zz.example.com")) {
michael@0: 			char addr6[17] = "abcdefghijklmnop";
michael@0: 			r = evdns_server_request_add_aaaa_reply(req,
michael@0: 			    qname, 1, addr6, 123);
michael@0: 			if (r<0)
michael@0: 				dns_ok = 0;
michael@0: 		} else if (qtype == EVDNS_TYPE_PTR &&
michael@0: 		    qclass == EVDNS_CLASS_INET &&
michael@0: 		    !evutil_ascii_strcasecmp(qname, TEST_ARPA)) {
michael@0: 			r = evdns_server_request_add_ptr_reply(req, NULL,
michael@0: 			    qname, "ZZ.EXAMPLE.COM", 54321);
michael@0: 			if (r<0)
michael@0: 				dns_ok = 0;
michael@0: 		} else if (qtype == EVDNS_TYPE_PTR &&
michael@0: 		    qclass == EVDNS_CLASS_INET &&
michael@0: 		    !evutil_ascii_strcasecmp(qname, TEST_IN6)){
michael@0: 			r = evdns_server_request_add_ptr_reply(req, NULL,
michael@0: 			    qname,
michael@0: 			    "ZZ-INET6.EXAMPLE.COM", 54322);
michael@0: 			if (r<0)
michael@0: 				dns_ok = 0;
michael@0: 		} else if (qtype == EVDNS_TYPE_A &&
michael@0: 		    qclass == EVDNS_CLASS_INET &&
michael@0: 		    !evutil_ascii_strcasecmp(qname, "drop.example.com")) {
michael@0: 			if (evdns_server_request_drop(req)<0)
michael@0: 				dns_ok = 0;
michael@0: 			return;
michael@0: 		} else {
michael@0: 			printf("Unexpected question %d %d \"%s\" ",
michael@0: 			    qtype, qclass, qname);
michael@0: 			dns_ok = 0;
michael@0: 		}
michael@0: 	}
michael@0: 	r = evdns_server_request_respond(req, 0);
michael@0: 	if (r<0) {
michael@0: 		printf("Couldn't send reply. ");
michael@0: 		dns_ok = 0;
michael@0: 	}
michael@0: }
michael@0: 
michael@0: static void
michael@0: dns_server_gethostbyname_cb(int result, char type, int count, int ttl,
michael@0:     void *addresses, void *arg)
michael@0: {
michael@0: 	if (result == DNS_ERR_CANCEL) {
michael@0: 		if (arg != (void*)(char*)90909) {
michael@0: 			printf("Unexpected cancelation");
michael@0: 			dns_ok = 0;
michael@0: 		}
michael@0: 		dns_got_cancel = 1;
michael@0: 		goto out;
michael@0: 	}
michael@0: 	if (result != DNS_ERR_NONE) {
michael@0: 		printf("Unexpected result %d. ", result);
michael@0: 		dns_ok = 0;
michael@0: 		goto out;
michael@0: 	}
michael@0: 	if (count != 1) {
michael@0: 		printf("Unexpected answer count %d. ", count);
michael@0: 		dns_ok = 0;
michael@0: 		goto out;
michael@0: 	}
michael@0: 	switch (type) {
michael@0: 	case DNS_IPv4_A: {
michael@0: 		struct in_addr *in_addrs = addresses;
michael@0: 		if (in_addrs[0].s_addr != htonl(0xc0a80b0bUL) || ttl != 12345) {
michael@0: 			printf("Bad IPv4 response \"%s\" %d. ",
michael@0: 					inet_ntoa(in_addrs[0]), ttl);
michael@0: 			dns_ok = 0;
michael@0: 			goto out;
michael@0: 		}
michael@0: 		break;
michael@0: 	}
michael@0: 	case DNS_IPv6_AAAA: {
michael@0: #if defined (_EVENT_HAVE_STRUCT_IN6_ADDR) && defined(_EVENT_HAVE_INET_NTOP) && defined(INET6_ADDRSTRLEN)
michael@0: 		struct in6_addr *in6_addrs = addresses;
michael@0: 		char buf[INET6_ADDRSTRLEN+1];
michael@0: 		if (memcmp(&in6_addrs[0].s6_addr, "abcdefghijklmnop", 16)
michael@0: 		    || ttl != 123) {
michael@0: 			const char *b = evutil_inet_ntop(AF_INET6, &in6_addrs[0],buf,sizeof(buf));
michael@0: 			printf("Bad IPv6 response \"%s\" %d. ", b, ttl);
michael@0: 			dns_ok = 0;
michael@0: 			goto out;
michael@0: 		}
michael@0: #endif
michael@0: 		break;
michael@0: 	}
michael@0: 	case DNS_PTR: {
michael@0: 		char **addrs = addresses;
michael@0: 		if (arg != (void*)6) {
michael@0: 			if (strcmp(addrs[0], "ZZ.EXAMPLE.COM") ||
michael@0: 			    ttl != 54321) {
michael@0: 				printf("Bad PTR response \"%s\" %d. ",
michael@0: 				    addrs[0], ttl);
michael@0: 				dns_ok = 0;
michael@0: 				goto out;
michael@0: 			}
michael@0: 		} else {
michael@0: 			if (strcmp(addrs[0], "ZZ-INET6.EXAMPLE.COM") ||
michael@0: 			    ttl != 54322) {
michael@0: 				printf("Bad ipv6 PTR response \"%s\" %d. ",
michael@0: 				    addrs[0], ttl);
michael@0: 				dns_ok = 0;
michael@0: 				goto out;
michael@0: 			}
michael@0: 		}
michael@0: 		break;
michael@0: 	}
michael@0: 	default:
michael@0: 		printf("Bad response type %d. ", type);
michael@0: 		dns_ok = 0;
michael@0: 	}
michael@0:  out:
michael@0: 	if (++n_server_responses == 3) {
michael@0: 		event_loopexit(NULL);
michael@0: 	}
michael@0: }
michael@0: 
michael@0: static void
michael@0: dns_server(void)
michael@0: {
michael@0: 	evutil_socket_t sock=-1;
michael@0: 	struct sockaddr_in my_addr;
michael@0: 	struct sockaddr_storage ss;
michael@0: 	ev_socklen_t slen;
michael@0: 	struct evdns_server_port *port=NULL;
michael@0: 	struct in_addr resolve_addr;
michael@0: 	struct in6_addr resolve_addr6;
michael@0: 	struct evdns_base *base=NULL;
michael@0: 	struct evdns_request *req=NULL;
michael@0: 
michael@0: 	dns_ok = 1;
michael@0: 
michael@0: 	base = evdns_base_new(NULL, 0);
michael@0: 
michael@0: 	/* Now configure a nameserver port. */
michael@0: 	sock = socket(AF_INET, SOCK_DGRAM, 0);
michael@0: 	if (sock<0) {
michael@0: 		tt_abort_perror("socket");
michael@0: 	}
michael@0: 
michael@0: 	evutil_make_socket_nonblocking(sock);
michael@0: 
michael@0: 	memset(&my_addr, 0, sizeof(my_addr));
michael@0: 	my_addr.sin_family = AF_INET;
michael@0: 	my_addr.sin_port = 0; /* kernel picks */
michael@0: 	my_addr.sin_addr.s_addr = htonl(0x7f000001UL);
michael@0: 	if (bind(sock, (struct sockaddr*)&my_addr, sizeof(my_addr)) < 0) {
michael@0: 		tt_abort_perror("bind");
michael@0: 	}
michael@0: 	slen = sizeof(ss);
michael@0: 	if (getsockname(sock, (struct sockaddr*)&ss, &slen) < 0) {
michael@0: 		tt_abort_perror("getsockname");
michael@0: 	}
michael@0: 
michael@0: 	port = evdns_add_server_port(sock, 0, dns_server_request_cb, NULL);
michael@0: 
michael@0: 	/* Add ourself as the only nameserver, and make sure we really are
michael@0: 	 * the only nameserver. */
michael@0: 	evdns_base_nameserver_sockaddr_add(base, (struct sockaddr*)&ss, slen, 0);
michael@0: 	tt_int_op(evdns_base_count_nameservers(base), ==, 1);
michael@0: 
michael@0: 	/* Send some queries. */
michael@0: 	evdns_base_resolve_ipv4(base, "zz.example.com", DNS_QUERY_NO_SEARCH,
michael@0: 					   dns_server_gethostbyname_cb, NULL);
michael@0: 	evdns_base_resolve_ipv6(base, "zz.example.com", DNS_QUERY_NO_SEARCH,
michael@0: 					   dns_server_gethostbyname_cb, NULL);
michael@0: 	resolve_addr.s_addr = htonl(0xc0a80b0bUL); /* 192.168.11.11 */
michael@0: 	evdns_base_resolve_reverse(base, &resolve_addr, 0,
michael@0: 	    dns_server_gethostbyname_cb, NULL);
michael@0: 	memcpy(resolve_addr6.s6_addr,
michael@0: 	    "\xff\xf0\x00\x00\x00\x00\xaa\xaa"
michael@0: 	    "\x11\x11\x00\x00\x00\x00\xef\xef", 16);
michael@0: 	evdns_base_resolve_reverse_ipv6(base, &resolve_addr6, 0,
michael@0: 	    dns_server_gethostbyname_cb, (void*)6);
michael@0: 
michael@0: 	req = evdns_base_resolve_ipv4(base,
michael@0: 	    "drop.example.com", DNS_QUERY_NO_SEARCH,
michael@0: 	    dns_server_gethostbyname_cb, (void*)(char*)90909);
michael@0: 
michael@0: 	evdns_cancel_request(base, req);
michael@0: 
michael@0: 	event_dispatch();
michael@0: 
michael@0: 	tt_assert(dns_got_cancel);
michael@0: 	test_ok = dns_ok;
michael@0: 
michael@0: end:
michael@0: 	if (port)
michael@0: 		evdns_close_server_port(port);
michael@0: 	if (sock >= 0)
michael@0: 		evutil_closesocket(sock);
michael@0: 	if (base)
michael@0: 		evdns_base_free(base, 0);
michael@0: }
michael@0: 
michael@0: static int n_replies_left;
michael@0: static struct event_base *exit_base;
michael@0: 
michael@0: struct generic_dns_callback_result {
michael@0: 	int result;
michael@0: 	char type;
michael@0: 	int count;
michael@0: 	int ttl;
michael@0: 	size_t addrs_len;
michael@0: 	void *addrs;
michael@0: 	char addrs_buf[256];
michael@0: };
michael@0: 
michael@0: static void
michael@0: generic_dns_callback(int result, char type, int count, int ttl, void *addresses,
michael@0:     void *arg)
michael@0: {
michael@0: 	size_t len;
michael@0: 	struct generic_dns_callback_result *res = arg;
michael@0: 	res->result = result;
michael@0: 	res->type = type;
michael@0: 	res->count = count;
michael@0: 	res->ttl = ttl;
michael@0: 
michael@0: 	if (type == DNS_IPv4_A)
michael@0: 		len = count * 4;
michael@0: 	else if (type == DNS_IPv6_AAAA)
michael@0: 		len = count * 16;
michael@0: 	else if (type == DNS_PTR)
michael@0: 		len = strlen(addresses)+1;
michael@0: 	else {
michael@0: 		res->addrs_len = len = 0;
michael@0: 		res->addrs = NULL;
michael@0: 	}
michael@0: 	if (len) {
michael@0: 		res->addrs_len = len;
michael@0: 		if (len > 256)
michael@0: 			len = 256;
michael@0: 		memcpy(res->addrs_buf, addresses, len);
michael@0: 		res->addrs = res->addrs_buf;
michael@0: 	}
michael@0: 
michael@0: 	if (--n_replies_left == 0)
michael@0: 		event_base_loopexit(exit_base, NULL);
michael@0: }
michael@0: 
michael@0: static struct regress_dns_server_table search_table[] = {
michael@0: 	{ "host.a.example.com", "err", "3", 0 },
michael@0: 	{ "host.b.example.com", "err", "3", 0 },
michael@0: 	{ "host.c.example.com", "A", "11.22.33.44", 0 },
michael@0: 	{ "host2.a.example.com", "err", "3", 0 },
michael@0: 	{ "host2.b.example.com", "A", "200.100.0.100", 0 },
michael@0: 	{ "host2.c.example.com", "err", "3", 0 },
michael@0: 	{ "hostn.a.example.com", "errsoa", "0", 0 },
michael@0: 	{ "hostn.b.example.com", "errsoa", "3", 0 },
michael@0: 	{ "hostn.c.example.com", "err", "0", 0 },
michael@0: 
michael@0: 	{ "host", "err", "3", 0 },
michael@0: 	{ "host2", "err", "3", 0 },
michael@0: 	{ "*", "err", "3", 0 },
michael@0: 	{ NULL, NULL, NULL, 0 }
michael@0: };
michael@0: 
michael@0: static void
michael@0: dns_search_test(void *arg)
michael@0: {
michael@0: 	struct basic_test_data *data = arg;
michael@0: 	struct event_base *base = data->base;
michael@0: 	struct evdns_base *dns = NULL;
michael@0: 	ev_uint16_t portnum = 0;
michael@0: 	char buf[64];
michael@0: 
michael@0: 	struct generic_dns_callback_result r[8];
michael@0: 
michael@0: 	tt_assert(regress_dnsserver(base, &portnum, search_table));
michael@0: 	evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum);
michael@0: 
michael@0: 	dns = evdns_base_new(base, 0);
michael@0: 	tt_assert(!evdns_base_nameserver_ip_add(dns, buf));
michael@0: 
michael@0: 	evdns_base_search_add(dns, "a.example.com");
michael@0: 	evdns_base_search_add(dns, "b.example.com");
michael@0: 	evdns_base_search_add(dns, "c.example.com");
michael@0: 
michael@0: 	n_replies_left = sizeof(r)/sizeof(r[0]);
michael@0: 	exit_base = base;
michael@0: 
michael@0: 	evdns_base_resolve_ipv4(dns, "host", 0, generic_dns_callback, &r[0]);
michael@0: 	evdns_base_resolve_ipv4(dns, "host2", 0, generic_dns_callback, &r[1]);
michael@0: 	evdns_base_resolve_ipv4(dns, "host", DNS_NO_SEARCH, generic_dns_callback, &r[2]);
michael@0: 	evdns_base_resolve_ipv4(dns, "host2", DNS_NO_SEARCH, generic_dns_callback, &r[3]);
michael@0: 	evdns_base_resolve_ipv4(dns, "host3", 0, generic_dns_callback, &r[4]);
michael@0: 	evdns_base_resolve_ipv4(dns, "hostn.a.example.com", DNS_NO_SEARCH, generic_dns_callback, &r[5]);
michael@0: 	evdns_base_resolve_ipv4(dns, "hostn.b.example.com", DNS_NO_SEARCH, generic_dns_callback, &r[6]);
michael@0: 	evdns_base_resolve_ipv4(dns, "hostn.c.example.com", DNS_NO_SEARCH, generic_dns_callback, &r[7]);
michael@0: 
michael@0: 	event_base_dispatch(base);
michael@0: 
michael@0: 	tt_int_op(r[0].type, ==, DNS_IPv4_A);
michael@0: 	tt_int_op(r[0].count, ==, 1);
michael@0: 	tt_int_op(((ev_uint32_t*)r[0].addrs)[0], ==, htonl(0x0b16212c));
michael@0: 	tt_int_op(r[1].type, ==, DNS_IPv4_A);
michael@0: 	tt_int_op(r[1].count, ==, 1);
michael@0: 	tt_int_op(((ev_uint32_t*)r[1].addrs)[0], ==, htonl(0xc8640064));
michael@0: 	tt_int_op(r[2].result, ==, DNS_ERR_NOTEXIST);
michael@0: 	tt_int_op(r[3].result, ==, DNS_ERR_NOTEXIST);
michael@0: 	tt_int_op(r[4].result, ==, DNS_ERR_NOTEXIST);
michael@0: 	tt_int_op(r[5].result, ==, DNS_ERR_NODATA);
michael@0: 	tt_int_op(r[5].ttl, ==, 42);
michael@0: 	tt_int_op(r[6].result, ==, DNS_ERR_NOTEXIST);
michael@0: 	tt_int_op(r[6].ttl, ==, 42);
michael@0: 	tt_int_op(r[7].result, ==, DNS_ERR_NODATA);
michael@0: 	tt_int_op(r[7].ttl, ==, 0);
michael@0: 
michael@0: end:
michael@0: 	if (dns)
michael@0: 		evdns_base_free(dns, 0);
michael@0: 
michael@0: 	regress_clean_dnsserver();
michael@0: }
michael@0: 
michael@0: static int request_count = 0;
michael@0: static struct evdns_request *current_req = NULL;
michael@0: 
michael@0: static void
michael@0: search_cancel_server_cb(struct evdns_server_request *req, void *data)
michael@0: {
michael@0: 	const char *question;
michael@0: 
michael@0: 	if (req->nquestions != 1)
michael@0: 		TT_DIE(("Only handling one question at a time; got %d",
michael@0: 			req->nquestions));
michael@0: 
michael@0: 	question = req->questions[0]->name;
michael@0: 
michael@0: 	TT_BLATHER(("got question, %s", question));
michael@0: 
michael@0: 	tt_assert(request_count > 0);
michael@0: 	tt_assert(!evdns_server_request_respond(req, 3));
michael@0: 
michael@0: 	if (!--request_count)
michael@0: 		evdns_cancel_request(NULL, current_req);
michael@0: 
michael@0: end:
michael@0: 	;
michael@0: }
michael@0: 
michael@0: static void
michael@0: dns_search_cancel_test(void *arg)
michael@0: {
michael@0: 	struct basic_test_data *data = arg;
michael@0: 	struct event_base *base = data->base;
michael@0: 	struct evdns_base *dns = NULL;
michael@0: 	struct evdns_server_port *port = NULL;
michael@0: 	ev_uint16_t portnum = 0;
michael@0: 	struct generic_dns_callback_result r1;
michael@0: 	char buf[64];
michael@0: 
michael@0: 	port = regress_get_dnsserver(base, &portnum, NULL,
michael@0: 	    search_cancel_server_cb, NULL);
michael@0: 	tt_assert(port);
michael@0: 	evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum);
michael@0: 
michael@0: 	dns = evdns_base_new(base, 0);
michael@0: 	tt_assert(!evdns_base_nameserver_ip_add(dns, buf));
michael@0: 
michael@0: 	evdns_base_search_add(dns, "a.example.com");
michael@0: 	evdns_base_search_add(dns, "b.example.com");
michael@0: 	evdns_base_search_add(dns, "c.example.com");
michael@0: 	evdns_base_search_add(dns, "d.example.com");
michael@0: 
michael@0: 	exit_base = base;
michael@0: 	request_count = 3;
michael@0: 	n_replies_left = 1;
michael@0: 
michael@0: 	current_req = evdns_base_resolve_ipv4(dns, "host", 0,
michael@0: 					generic_dns_callback, &r1);
michael@0: 	event_base_dispatch(base);
michael@0: 
michael@0: 	tt_int_op(r1.result, ==, DNS_ERR_CANCEL);
michael@0: 
michael@0: end:
michael@0: 	if (port)
michael@0: 		evdns_close_server_port(port);
michael@0: 	if (dns)
michael@0: 		evdns_base_free(dns, 0);
michael@0: }
michael@0: 
michael@0: static void
michael@0: fail_server_cb(struct evdns_server_request *req, void *data)
michael@0: {
michael@0: 	const char *question;
michael@0: 	int *count = data;
michael@0: 	struct in_addr in;
michael@0: 
michael@0: 	/* Drop the first N requests that we get. */
michael@0: 	if (*count > 0) {
michael@0: 		--*count;
michael@0: 		tt_want(! evdns_server_request_drop(req));
michael@0: 		return;
michael@0: 	}
michael@0: 
michael@0: 	if (req->nquestions != 1)
michael@0: 		TT_DIE(("Only handling one question at a time; got %d",
michael@0: 			req->nquestions));
michael@0: 
michael@0: 	question = req->questions[0]->name;
michael@0: 
michael@0: 	if (!evutil_ascii_strcasecmp(question, "google.com")) {
michael@0: 		/* Detect a probe, and get out of the loop. */
michael@0: 		event_base_loopexit(exit_base, NULL);
michael@0: 	}
michael@0: 
michael@0: 	evutil_inet_pton(AF_INET, "16.32.64.128", &in);
michael@0: 	evdns_server_request_add_a_reply(req, question, 1, &in.s_addr,
michael@0: 	    100);
michael@0: 	tt_assert(! evdns_server_request_respond(req, 0))
michael@0: 	return;
michael@0: end:
michael@0: 	tt_want(! evdns_server_request_drop(req));
michael@0: }
michael@0: 
michael@0: static void
michael@0: dns_retry_test(void *arg)
michael@0: {
michael@0: 	struct basic_test_data *data = arg;
michael@0: 	struct event_base *base = data->base;
michael@0: 	struct evdns_server_port *port = NULL;
michael@0: 	struct evdns_base *dns = NULL;
michael@0: 	int drop_count = 2;
michael@0: 	ev_uint16_t portnum = 0;
michael@0: 	char buf[64];
michael@0: 
michael@0: 	struct generic_dns_callback_result r1;
michael@0: 
michael@0: 	port = regress_get_dnsserver(base, &portnum, NULL,
michael@0: 	    fail_server_cb, &drop_count);
michael@0: 	tt_assert(port);
michael@0: 	evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum);
michael@0: 
michael@0: 	dns = evdns_base_new(base, 0);
michael@0: 	tt_assert(!evdns_base_nameserver_ip_add(dns, buf));
michael@0: 	tt_assert(! evdns_base_set_option(dns, "timeout", "0.3"));
michael@0: 	tt_assert(! evdns_base_set_option(dns, "max-timeouts:", "10"));
michael@0: 	tt_assert(! evdns_base_set_option(dns, "initial-probe-timeout", "0.5"));
michael@0: 
michael@0: 	evdns_base_resolve_ipv4(dns, "host.example.com", 0,
michael@0: 	    generic_dns_callback, &r1);
michael@0: 
michael@0: 	n_replies_left = 1;
michael@0: 	exit_base = base;
michael@0: 
michael@0: 	event_base_dispatch(base);
michael@0: 
michael@0: 	tt_int_op(drop_count, ==, 0);
michael@0: 
michael@0: 	tt_int_op(r1.type, ==, DNS_IPv4_A);
michael@0: 	tt_int_op(r1.count, ==, 1);
michael@0: 	tt_int_op(((ev_uint32_t*)r1.addrs)[0], ==, htonl(0x10204080));
michael@0: 
michael@0: 	/* Now try again, but this time have the server get treated as
michael@0: 	 * failed, so we can send it a test probe. */
michael@0: 	drop_count = 4;
michael@0: 	tt_assert(! evdns_base_set_option(dns, "max-timeouts:", "3"));
michael@0: 	tt_assert(! evdns_base_set_option(dns, "attempts:", "4"));
michael@0: 	memset(&r1, 0, sizeof(r1));
michael@0: 
michael@0: 	evdns_base_resolve_ipv4(dns, "host.example.com", 0,
michael@0: 	    generic_dns_callback, &r1);
michael@0: 
michael@0: 	n_replies_left = 2;
michael@0: 
michael@0: 	/* This will run until it answers the "google.com" probe request. */
michael@0: 	event_base_dispatch(base);
michael@0: 
michael@0: 	/* We'll treat the server as failed here. */
michael@0: 	tt_int_op(r1.result, ==, DNS_ERR_TIMEOUT);
michael@0: 
michael@0: 	/* It should work this time. */
michael@0: 	tt_int_op(drop_count, ==, 0);
michael@0: 	evdns_base_resolve_ipv4(dns, "host.example.com", 0,
michael@0: 	    generic_dns_callback, &r1);
michael@0: 
michael@0: 	event_base_dispatch(base);
michael@0: 	tt_int_op(r1.result, ==, DNS_ERR_NONE);
michael@0: 	tt_int_op(r1.type, ==, DNS_IPv4_A);
michael@0: 	tt_int_op(r1.count, ==, 1);
michael@0: 	tt_int_op(((ev_uint32_t*)r1.addrs)[0], ==, htonl(0x10204080));
michael@0: 
michael@0: end:
michael@0: 	if (dns)
michael@0: 		evdns_base_free(dns, 0);
michael@0: 	if (port)
michael@0: 		evdns_close_server_port(port);
michael@0: }
michael@0: 
michael@0: static struct regress_dns_server_table internal_error_table[] = {
michael@0: 	/* Error 4 (NOTIMPL) makes us reissue the request to another server
michael@0: 	   if we can.
michael@0: 
michael@0: 	   XXXX we should reissue under a much wider set of circumstances!
michael@0: 	 */
michael@0: 	{ "foof.example.com", "err", "4", 0 },
michael@0: 	{ NULL, NULL, NULL, 0 }
michael@0: };
michael@0: 
michael@0: static struct regress_dns_server_table reissue_table[] = {
michael@0: 	{ "foof.example.com", "A", "240.15.240.15", 0 },
michael@0: 	{ NULL, NULL, NULL, 0 }
michael@0: };
michael@0: 
michael@0: static void
michael@0: dns_reissue_test(void *arg)
michael@0: {
michael@0: 	struct basic_test_data *data = arg;
michael@0: 	struct event_base *base = data->base;
michael@0: 	struct evdns_server_port *port1 = NULL, *port2 = NULL;
michael@0: 	struct evdns_base *dns = NULL;
michael@0: 	struct generic_dns_callback_result r1;
michael@0: 	ev_uint16_t portnum1 = 0, portnum2=0;
michael@0: 	char buf1[64], buf2[64];
michael@0: 
michael@0: 	port1 = regress_get_dnsserver(base, &portnum1, NULL,
michael@0: 	    regress_dns_server_cb, internal_error_table);
michael@0: 	tt_assert(port1);
michael@0: 	port2 = regress_get_dnsserver(base, &portnum2, NULL,
michael@0: 	    regress_dns_server_cb, reissue_table);
michael@0: 	tt_assert(port2);
michael@0: 	evutil_snprintf(buf1, sizeof(buf1), "127.0.0.1:%d", (int)portnum1);
michael@0: 	evutil_snprintf(buf2, sizeof(buf2), "127.0.0.1:%d", (int)portnum2);
michael@0: 
michael@0: 	dns = evdns_base_new(base, 0);
michael@0: 	tt_assert(!evdns_base_nameserver_ip_add(dns, buf1));
michael@0: 	tt_assert(! evdns_base_set_option(dns, "timeout:", "0.3"));
michael@0: 	tt_assert(! evdns_base_set_option(dns, "max-timeouts:", "2"));
michael@0: 	tt_assert(! evdns_base_set_option(dns, "attempts:", "5"));
michael@0: 
michael@0: 	memset(&r1, 0, sizeof(r1));
michael@0: 	evdns_base_resolve_ipv4(dns, "foof.example.com", 0,
michael@0: 	    generic_dns_callback, &r1);
michael@0: 
michael@0: 	/* Add this after, so that we are sure to get a reissue. */
michael@0: 	tt_assert(!evdns_base_nameserver_ip_add(dns, buf2));
michael@0: 
michael@0: 	n_replies_left = 1;
michael@0: 	exit_base = base;
michael@0: 
michael@0: 	event_base_dispatch(base);
michael@0: 	tt_int_op(r1.result, ==, DNS_ERR_NONE);
michael@0: 	tt_int_op(r1.type, ==, DNS_IPv4_A);
michael@0: 	tt_int_op(r1.count, ==, 1);
michael@0: 	tt_int_op(((ev_uint32_t*)r1.addrs)[0], ==, htonl(0xf00ff00f));
michael@0: 
michael@0: 	/* Make sure we dropped at least once. */
michael@0: 	tt_int_op(internal_error_table[0].seen, >, 0);
michael@0: 
michael@0: end:
michael@0: 	if (dns)
michael@0: 		evdns_base_free(dns, 0);
michael@0: 	if (port1)
michael@0: 		evdns_close_server_port(port1);
michael@0: 	if (port2)
michael@0: 		evdns_close_server_port(port2);
michael@0: }
michael@0: 
michael@0: #if 0
michael@0: static void
michael@0: dumb_bytes_fn(char *p, size_t n)
michael@0: {
michael@0: 	unsigned i;
michael@0: 	/* This gets us 6 bits of entropy per transaction ID, which means we
michael@0: 	 * will have probably have collisions and need to pick again. */
michael@0: 	for (i=0;i<n;++i)
michael@0: 		p[i] = (char)(rand() & 7);
michael@0: }
michael@0: #endif
michael@0: 
michael@0: static void
michael@0: dns_inflight_test(void *arg)
michael@0: {
michael@0: 	struct basic_test_data *data = arg;
michael@0: 	struct event_base *base = data->base;
michael@0: 	struct evdns_base *dns = NULL;
michael@0: 	ev_uint16_t portnum = 0;
michael@0: 	char buf[64];
michael@0: 
michael@0: 	struct generic_dns_callback_result r[20];
michael@0: 	int i;
michael@0: 
michael@0: 	tt_assert(regress_dnsserver(base, &portnum, reissue_table));
michael@0: 	evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)portnum);
michael@0: 
michael@0: 	dns = evdns_base_new(base, 0);
michael@0: 	tt_assert(!evdns_base_nameserver_ip_add(dns, buf));
michael@0: 	tt_assert(! evdns_base_set_option(dns, "max-inflight:", "3"));
michael@0: 	tt_assert(! evdns_base_set_option(dns, "randomize-case:", "0"));
michael@0: 
michael@0: 	for (i=0;i<20;++i)
michael@0: 		evdns_base_resolve_ipv4(dns, "foof.example.com", 0, generic_dns_callback, &r[i]);
michael@0: 
michael@0: 	n_replies_left = 20;
michael@0: 	exit_base = base;
michael@0: 
michael@0: 	event_base_dispatch(base);
michael@0: 
michael@0: 	for (i=0;i<20;++i) {
michael@0: 		tt_int_op(r[i].type, ==, DNS_IPv4_A);
michael@0: 		tt_int_op(r[i].count, ==, 1);
michael@0: 		tt_int_op(((ev_uint32_t*)r[i].addrs)[0], ==, htonl(0xf00ff00f));
michael@0: 	}
michael@0: 
michael@0: end:
michael@0: 	if (dns)
michael@0: 		evdns_base_free(dns, 0);
michael@0: 	regress_clean_dnsserver();
michael@0: }
michael@0: 
michael@0: /* === Test for bufferevent_socket_connect_hostname */
michael@0: 
michael@0: static int total_connected_or_failed = 0;
michael@0: static int total_n_accepted = 0;
michael@0: static struct event_base *be_connect_hostname_base = NULL;
michael@0: 
michael@0: /* Implements a DNS server for the connect_hostname test and the
michael@0:  * getaddrinfo_async test */
michael@0: static void
michael@0: be_getaddrinfo_server_cb(struct evdns_server_request *req, void *data)
michael@0: {
michael@0: 	int i;
michael@0: 	int *n_got_p=data;
michael@0: 	int added_any=0;
michael@0: 	++*n_got_p;
michael@0: 
michael@0: 	for (i=0;i<req->nquestions;++i) {
michael@0: 		const int qtype = req->questions[i]->type;
michael@0: 		const int qclass = req->questions[i]->dns_question_class;
michael@0: 		const char *qname = req->questions[i]->name;
michael@0: 		struct in_addr ans;
michael@0: 		struct in6_addr ans6;
michael@0: 		memset(&ans6, 0, sizeof(ans6));
michael@0: 
michael@0: 		if (qtype == EVDNS_TYPE_A &&
michael@0: 		    qclass == EVDNS_CLASS_INET &&
michael@0: 		    !evutil_ascii_strcasecmp(qname, "nobodaddy.example.com")) {
michael@0: 			ans.s_addr = htonl(0x7f000001);
michael@0: 			evdns_server_request_add_a_reply(req, qname,
michael@0: 			    1, &ans.s_addr, 2000);
michael@0: 			added_any = 1;
michael@0: 		} else if (!evutil_ascii_strcasecmp(qname,
michael@0: 			"nosuchplace.example.com")) {
michael@0: 			/* ok, just say notfound. */
michael@0: 		} else if (!evutil_ascii_strcasecmp(qname,
michael@0: 			"both.example.com")) {
michael@0: 			if (qtype == EVDNS_TYPE_A) {
michael@0: 				ans.s_addr = htonl(0x50502020);
michael@0: 				evdns_server_request_add_a_reply(req, qname,
michael@0: 				    1, &ans.s_addr, 2000);
michael@0: 				added_any = 1;
michael@0: 			} else if (qtype == EVDNS_TYPE_AAAA) {
michael@0: 				ans6.s6_addr[0] = 0x80;
michael@0: 				ans6.s6_addr[1] = 0xff;
michael@0: 				ans6.s6_addr[14] = 0xbb;
michael@0: 				ans6.s6_addr[15] = 0xbb;
michael@0: 				evdns_server_request_add_aaaa_reply(req, qname,
michael@0: 				    1, &ans6.s6_addr, 2000);
michael@0: 				added_any = 1;
michael@0: 			}
michael@0: 			evdns_server_request_add_cname_reply(req, qname,
michael@0: 			    "both-canonical.example.com", 1000);
michael@0: 		} else if (!evutil_ascii_strcasecmp(qname,
michael@0: 			"v4only.example.com") ||
michael@0: 		    !evutil_ascii_strcasecmp(qname, "v4assert.example.com")) {
michael@0: 			if (qtype == EVDNS_TYPE_A) {
michael@0: 				ans.s_addr = htonl(0x12345678);
michael@0: 				evdns_server_request_add_a_reply(req, qname,
michael@0: 				    1, &ans.s_addr, 2000);
michael@0: 				added_any = 1;
michael@0: 			} else if (!evutil_ascii_strcasecmp(qname,
michael@0: 				"v4assert.example.com")) {
michael@0: 				TT_FAIL(("Got an AAAA request for v4assert"));
michael@0: 			}
michael@0: 		} else if (!evutil_ascii_strcasecmp(qname,
michael@0: 			"v6only.example.com") ||
michael@0: 		    !evutil_ascii_strcasecmp(qname, "v6assert.example.com")) {
michael@0: 			if (qtype == EVDNS_TYPE_AAAA) {
michael@0: 				ans6.s6_addr[0] = 0x0b;
michael@0: 				ans6.s6_addr[1] = 0x0b;
michael@0: 				ans6.s6_addr[14] = 0xf0;
michael@0: 				ans6.s6_addr[15] = 0x0d;
michael@0: 				evdns_server_request_add_aaaa_reply(req, qname,
michael@0: 				    1, &ans6.s6_addr, 2000);
michael@0: 				added_any = 1;
michael@0: 			}  else if (!evutil_ascii_strcasecmp(qname,
michael@0: 				"v6assert.example.com")) {
michael@0: 				TT_FAIL(("Got a A request for v6assert"));
michael@0: 			}
michael@0: 		} else if (!evutil_ascii_strcasecmp(qname,
michael@0: 			"v6timeout.example.com")) {
michael@0: 			if (qtype == EVDNS_TYPE_A) {
michael@0: 				ans.s_addr = htonl(0xabcdef01);
michael@0: 				evdns_server_request_add_a_reply(req, qname,
michael@0: 				    1, &ans.s_addr, 2000);
michael@0: 				added_any = 1;
michael@0: 			} else if (qtype == EVDNS_TYPE_AAAA) {
michael@0: 				/* Let the v6 request time out.*/
michael@0: 				evdns_server_request_drop(req);
michael@0: 				return;
michael@0: 			}
michael@0: 		} else if (!evutil_ascii_strcasecmp(qname,
michael@0: 			"v4timeout.example.com")) {
michael@0: 			if (qtype == EVDNS_TYPE_AAAA) {
michael@0: 				ans6.s6_addr[0] = 0x0a;
michael@0: 				ans6.s6_addr[1] = 0x0a;
michael@0: 				ans6.s6_addr[14] = 0xff;
michael@0: 				ans6.s6_addr[15] = 0x01;
michael@0: 				evdns_server_request_add_aaaa_reply(req, qname,
michael@0: 				    1, &ans6.s6_addr, 2000);
michael@0: 				added_any = 1;
michael@0: 			} else if (qtype == EVDNS_TYPE_A) {
michael@0: 				/* Let the v4 request time out.*/
michael@0: 				evdns_server_request_drop(req);
michael@0: 				return;
michael@0: 			}
michael@0: 		} else if (!evutil_ascii_strcasecmp(qname,
michael@0: 			"v6timeout-nonexist.example.com")) {
michael@0: 			if (qtype == EVDNS_TYPE_A) {
michael@0: 				/* Fall through, give an nexist. */
michael@0: 			} else if (qtype == EVDNS_TYPE_AAAA) {
michael@0: 				/* Let the v6 request time out.*/
michael@0: 				evdns_server_request_drop(req);
michael@0: 				return;
michael@0: 			}
michael@0: 		} else if (!evutil_ascii_strcasecmp(qname,
michael@0: 			"all-timeout.example.com")) {
michael@0: 			/* drop all requests */
michael@0: 			evdns_server_request_drop(req);
michael@0: 			return;
michael@0: 		} else {
michael@0: 			TT_GRIPE(("Got weird request for %s",qname));
michael@0: 		}
michael@0: 	}
michael@0: 	if (added_any)
michael@0: 		evdns_server_request_respond(req, 0);
michael@0: 	else
michael@0: 		evdns_server_request_respond(req, 3);
michael@0: }
michael@0: 
michael@0: /* Implements a listener for connect_hostname test. */
michael@0: static void
michael@0: nil_accept_cb(struct evconnlistener *l, evutil_socket_t fd, struct sockaddr *s,
michael@0:     int socklen, void *arg)
michael@0: {
michael@0: 	int *p = arg;
michael@0: 	(*p)++;
michael@0: 	++total_n_accepted;
michael@0: 	/* don't do anything with the socket; let it close when we exit() */
michael@0: 	if (total_n_accepted >= 3 && total_connected_or_failed >= 5)
michael@0: 		event_base_loopexit(be_connect_hostname_base,
michael@0: 		    NULL);
michael@0: }
michael@0: 
michael@0: struct be_conn_hostname_result {
michael@0: 	int dnserr;
michael@0: 	int what;
michael@0: };
michael@0: 
michael@0: /* Bufferevent event callback for the connect_hostname test: remembers what
michael@0:  * event we got. */
michael@0: static void
michael@0: be_connect_hostname_event_cb(struct bufferevent *bev, short what, void *ctx)
michael@0: {
michael@0: 	struct be_conn_hostname_result *got = ctx;
michael@0: 	if (!got->what) {
michael@0: 		TT_BLATHER(("Got a bufferevent event %d", what));
michael@0: 		got->what = what;
michael@0: 
michael@0: 		if ((what & BEV_EVENT_CONNECTED) || (what & BEV_EVENT_ERROR)) {
michael@0: 			int r;
michael@0: 			if ((r = bufferevent_socket_get_dns_error(bev))) {
michael@0: 				got->dnserr = r;
michael@0: 				TT_BLATHER(("DNS error %d: %s", r,
michael@0: 					   evutil_gai_strerror(r)));
michael@0: 			}			++total_connected_or_failed;
michael@0: 			TT_BLATHER(("Got %d connections or errors.", total_connected_or_failed));
michael@0: 
michael@0: 			if (total_n_accepted >= 3 && total_connected_or_failed >= 5)
michael@0: 				event_base_loopexit(be_connect_hostname_base,
michael@0: 				    NULL);
michael@0: 		}
michael@0: 	} else {
michael@0: 		TT_FAIL(("Two events on one bufferevent. %d,%d",
michael@0: 			got->what, (int)what));
michael@0: 	}
michael@0: }
michael@0: 
michael@0: static void
michael@0: test_bufferevent_connect_hostname(void *arg)
michael@0: {
michael@0: 	struct basic_test_data *data = arg;
michael@0: 	struct evconnlistener *listener = NULL;
michael@0: 	struct bufferevent *be1=NULL, *be2=NULL, *be3=NULL, *be4=NULL, *be5=NULL;
michael@0: 	struct be_conn_hostname_result be1_outcome={0,0}, be2_outcome={0,0},
michael@0: 	       be3_outcome={0,0}, be4_outcome={0,0}, be5_outcome={0,0};
michael@0: 	int expect_err5;
michael@0: 	struct evdns_base *dns=NULL;
michael@0: 	struct evdns_server_port *port=NULL;
michael@0: 	struct sockaddr_in sin;
michael@0: 	int listener_port=-1;
michael@0: 	ev_uint16_t dns_port=0;
michael@0: 	int n_accept=0, n_dns=0;
michael@0: 	char buf[128];
michael@0: 
michael@0: 	be_connect_hostname_base = data->base;
michael@0: 
michael@0: 	/* Bind an address and figure out what port it's on. */
michael@0: 	memset(&sin, 0, sizeof(sin));
michael@0: 	sin.sin_family = AF_INET;
michael@0: 	sin.sin_addr.s_addr = htonl(0x7f000001); /* 127.0.0.1 */
michael@0: 	sin.sin_port = 0;
michael@0: 	listener = evconnlistener_new_bind(data->base, nil_accept_cb,
michael@0: 	    &n_accept,
michael@0: 	    LEV_OPT_REUSEABLE|LEV_OPT_CLOSE_ON_EXEC,
michael@0: 	    -1, (struct sockaddr *)&sin, sizeof(sin));
michael@0: 	tt_assert(listener);
michael@0: 	listener_port = regress_get_socket_port(
michael@0: 		evconnlistener_get_fd(listener));
michael@0: 
michael@0: 	port = regress_get_dnsserver(data->base, &dns_port, NULL,
michael@0: 	    be_getaddrinfo_server_cb, &n_dns);
michael@0: 	tt_assert(port);
michael@0: 	tt_int_op(dns_port, >=, 0);
michael@0: 
michael@0: 	/* Start an evdns_base that uses the server as its resolver. */
michael@0: 	dns = evdns_base_new(data->base, 0);
michael@0: 	evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", (int)dns_port);
michael@0: 	evdns_base_nameserver_ip_add(dns, buf);
michael@0: 
michael@0: 	/* Now, finally, at long last, launch the bufferevents.	 One should do
michael@0: 	 * a failing lookup IP, one should do a successful lookup by IP,
michael@0: 	 * and one should do a successful lookup by hostname. */
michael@0: 	be1 = bufferevent_socket_new(data->base, -1, BEV_OPT_CLOSE_ON_FREE);
michael@0: 	be2 = bufferevent_socket_new(data->base, -1, BEV_OPT_CLOSE_ON_FREE);
michael@0: 	be3 = bufferevent_socket_new(data->base, -1, BEV_OPT_CLOSE_ON_FREE);
michael@0: 	be4 = bufferevent_socket_new(data->base, -1, BEV_OPT_CLOSE_ON_FREE);
michael@0: 	be5 = bufferevent_socket_new(data->base, -1, BEV_OPT_CLOSE_ON_FREE);
michael@0: 
michael@0: 	bufferevent_setcb(be1, NULL, NULL, be_connect_hostname_event_cb,
michael@0: 	    &be1_outcome);
michael@0: 	bufferevent_setcb(be2, NULL, NULL, be_connect_hostname_event_cb,
michael@0: 	    &be2_outcome);
michael@0: 	bufferevent_setcb(be3, NULL, NULL, be_connect_hostname_event_cb,
michael@0: 	    &be3_outcome);
michael@0: 	bufferevent_setcb(be4, NULL, NULL, be_connect_hostname_event_cb,
michael@0: 	    &be4_outcome);
michael@0: 	bufferevent_setcb(be5, NULL, NULL, be_connect_hostname_event_cb,
michael@0: 	    &be5_outcome);
michael@0: 
michael@0: 	/* Launch an async resolve that will fail. */
michael@0: 	tt_assert(!bufferevent_socket_connect_hostname(be1, dns, AF_INET,
michael@0: 		"nosuchplace.example.com", listener_port));
michael@0: 	/* Connect to the IP without resolving. */
michael@0: 	tt_assert(!bufferevent_socket_connect_hostname(be2, dns, AF_INET,
michael@0: 		"127.0.0.1", listener_port));
michael@0: 	/* Launch an async resolve that will succeed. */
michael@0: 	tt_assert(!bufferevent_socket_connect_hostname(be3, dns, AF_INET,
michael@0: 		"nobodaddy.example.com", listener_port));
michael@0: 	/* Use the blocking resolver.  This one will fail if your resolver
michael@0: 	 * can't resolve localhost to 127.0.0.1 */
michael@0: 	tt_assert(!bufferevent_socket_connect_hostname(be4, NULL, AF_INET,
michael@0: 		"localhost", listener_port));
michael@0: 	/* Use the blocking resolver with a nonexistent hostname. */
michael@0: 	tt_assert(!bufferevent_socket_connect_hostname(be5, NULL, AF_INET,
michael@0: 		"nonesuch.nowhere.example.com", 80));
michael@0: 	{
michael@0: 		/* The blocking resolver will use the system nameserver, which
michael@0: 		 * might tell us anything.  (Yes, some twits even pretend that
michael@0: 		 * example.com is real.) Let's see what answer to expect. */
michael@0: 		struct evutil_addrinfo hints, *ai = NULL;
michael@0: 		memset(&hints, 0, sizeof(hints));
michael@0: 		hints.ai_family = AF_INET;
michael@0: 		hints.ai_socktype = SOCK_STREAM;
michael@0: 		hints.ai_protocol = IPPROTO_TCP;
michael@0: 		expect_err5 = evutil_getaddrinfo(
michael@0: 			"nonesuch.nowhere.example.com", "80", &hints, &ai);
michael@0: 	}
michael@0: 
michael@0: 	event_base_dispatch(data->base);
michael@0: 
michael@0: 	tt_int_op(be1_outcome.what, ==, BEV_EVENT_ERROR);
michael@0: 	tt_int_op(be1_outcome.dnserr, ==, EVUTIL_EAI_NONAME);
michael@0: 	tt_int_op(be2_outcome.what, ==, BEV_EVENT_CONNECTED);
michael@0: 	tt_int_op(be2_outcome.dnserr, ==, 0);
michael@0: 	tt_int_op(be3_outcome.what, ==, BEV_EVENT_CONNECTED);
michael@0: 	tt_int_op(be3_outcome.dnserr, ==, 0);
michael@0: 	tt_int_op(be4_outcome.what, ==, BEV_EVENT_CONNECTED);
michael@0: 	tt_int_op(be4_outcome.dnserr, ==, 0);
michael@0: 	if (expect_err5) {
michael@0: 		tt_int_op(be5_outcome.what, ==, BEV_EVENT_ERROR);
michael@0: 		tt_int_op(be5_outcome.dnserr, ==, expect_err5);
michael@0: 	}
michael@0: 
michael@0: 	tt_int_op(n_accept, ==, 3);
michael@0: 	tt_int_op(n_dns, ==, 2);
michael@0: 
michael@0: end:
michael@0: 	if (listener)
michael@0: 		evconnlistener_free(listener);
michael@0: 	if (port)
michael@0: 		evdns_close_server_port(port);
michael@0: 	if (dns)
michael@0: 		evdns_base_free(dns, 0);
michael@0: 	if (be1)
michael@0: 		bufferevent_free(be1);
michael@0: 	if (be2)
michael@0: 		bufferevent_free(be2);
michael@0: 	if (be3)
michael@0: 		bufferevent_free(be3);
michael@0: 	if (be4)
michael@0: 		bufferevent_free(be4);
michael@0: 	if (be5)
michael@0: 		bufferevent_free(be5);
michael@0: }
michael@0: 
michael@0: 
michael@0: struct gai_outcome {
michael@0: 	int err;
michael@0: 	struct evutil_addrinfo *ai;
michael@0: };
michael@0: 
michael@0: static int n_gai_results_pending = 0;
michael@0: static struct event_base *exit_base_on_no_pending_results = NULL;
michael@0: 
michael@0: static void
michael@0: gai_cb(int err, struct evutil_addrinfo *res, void *ptr)
michael@0: {
michael@0: 	struct gai_outcome *go = ptr;
michael@0: 	go->err = err;
michael@0: 	go->ai = res;
michael@0: 	if (--n_gai_results_pending <= 0 && exit_base_on_no_pending_results)
michael@0: 		event_base_loopexit(exit_base_on_no_pending_results, NULL);
michael@0: 	if (n_gai_results_pending < 900)
michael@0: 		TT_BLATHER(("Got an answer; expecting %d more.",
michael@0: 			n_gai_results_pending));
michael@0: }
michael@0: 
michael@0: static void
michael@0: cancel_gai_cb(evutil_socket_t fd, short what, void *ptr)
michael@0: {
michael@0: 	struct evdns_getaddrinfo_request *r = ptr;
michael@0: 	evdns_getaddrinfo_cancel(r);
michael@0: }
michael@0: 
michael@0: static void
michael@0: test_getaddrinfo_async(void *arg)
michael@0: {
michael@0: 	struct basic_test_data *data = arg;
michael@0: 	struct evutil_addrinfo hints, *a;
michael@0: 	struct gai_outcome local_outcome;
michael@0: 	struct gai_outcome a_out[12];
michael@0: 	int i;
michael@0: 	struct evdns_getaddrinfo_request *r;
michael@0: 	char buf[128];
michael@0: 	struct evdns_server_port *port = NULL;
michael@0: 	ev_uint16_t dns_port = 0;
michael@0: 	int n_dns_questions = 0;
michael@0: 
michael@0: 	struct evdns_base *dns_base = evdns_base_new(data->base, 0);
michael@0: 	tt_assert(dns_base);
michael@0: 
michael@0: 	/* for localhost */
michael@0: 	evdns_base_load_hosts(dns_base, NULL);
michael@0: 
michael@0: 	memset(a_out, 0, sizeof(a_out));
michael@0: 	memset(&local_outcome, 0, sizeof(local_outcome));
michael@0: 
michael@0: 	n_gai_results_pending = 10000; /* don't think about exiting yet. */
michael@0: 
michael@0: 	/* 1. Try some cases that will never hit the asynchronous resolver. */
michael@0: 	/* 1a. Simple case with a symbolic service name */
michael@0: 	memset(&hints, 0, sizeof(hints));
michael@0: 	hints.ai_family = PF_UNSPEC;
michael@0: 	hints.ai_socktype = SOCK_STREAM;
michael@0: 	memset(&local_outcome, 0, sizeof(local_outcome));
michael@0: 	r = evdns_getaddrinfo(dns_base, "1.2.3.4", "http",
michael@0: 	    &hints, gai_cb, &local_outcome);
michael@0: 	tt_assert(! r);
michael@0: 	if (!local_outcome.err) {
michael@0: 		tt_ptr_op(local_outcome.ai,!=,NULL);
michael@0: 		test_ai_eq(local_outcome.ai, "1.2.3.4:80", SOCK_STREAM, IPPROTO_TCP);
michael@0: 		evutil_freeaddrinfo(local_outcome.ai);
michael@0: 		local_outcome.ai = NULL;
michael@0: 	} else {
michael@0: 		TT_BLATHER(("Apparently we have no getservbyname."));
michael@0: 	}
michael@0: 
michael@0: 	/* 1b. EVUTIL_AI_NUMERICHOST is set */
michael@0: 	memset(&hints, 0, sizeof(hints));
michael@0: 	hints.ai_family = PF_UNSPEC;
michael@0: 	hints.ai_flags = EVUTIL_AI_NUMERICHOST;
michael@0: 	memset(&local_outcome, 0, sizeof(local_outcome));
michael@0: 	r = evdns_getaddrinfo(dns_base, "www.google.com", "80",
michael@0: 	    &hints, gai_cb, &local_outcome);
michael@0: 	tt_ptr_op(r,==,NULL);
michael@0: 	tt_int_op(local_outcome.err,==,EVUTIL_EAI_NONAME);
michael@0: 	tt_ptr_op(local_outcome.ai,==,NULL);
michael@0: 
michael@0: 	/* 1c. We give a numeric address (ipv6) */
michael@0: 	memset(&hints, 0, sizeof(hints));
michael@0: 	memset(&local_outcome, 0, sizeof(local_outcome));
michael@0: 	hints.ai_family = PF_UNSPEC;
michael@0: 	hints.ai_protocol = IPPROTO_TCP;
michael@0: 	r = evdns_getaddrinfo(dns_base, "f::f", "8008",
michael@0: 	    &hints, gai_cb, &local_outcome);
michael@0: 	tt_assert(!r);
michael@0: 	tt_int_op(local_outcome.err,==,0);
michael@0: 	tt_assert(local_outcome.ai);
michael@0: 	tt_ptr_op(local_outcome.ai->ai_next,==,NULL);
michael@0: 	test_ai_eq(local_outcome.ai, "[f::f]:8008", SOCK_STREAM, IPPROTO_TCP);
michael@0: 	evutil_freeaddrinfo(local_outcome.ai);
michael@0: 	local_outcome.ai = NULL;
michael@0: 
michael@0: 	/* 1d. We give a numeric address (ipv4) */
michael@0: 	memset(&hints, 0, sizeof(hints));
michael@0: 	memset(&local_outcome, 0, sizeof(local_outcome));
michael@0: 	hints.ai_family = PF_UNSPEC;
michael@0: 	r = evdns_getaddrinfo(dns_base, "5.6.7.8", NULL,
michael@0: 	    &hints, gai_cb, &local_outcome);
michael@0: 	tt_assert(!r);
michael@0: 	tt_int_op(local_outcome.err,==,0);
michael@0: 	tt_assert(local_outcome.ai);
michael@0: 	a = ai_find_by_protocol(local_outcome.ai, IPPROTO_TCP);
michael@0: 	tt_assert(a);
michael@0: 	test_ai_eq(a, "5.6.7.8", SOCK_STREAM, IPPROTO_TCP);
michael@0: 	a = ai_find_by_protocol(local_outcome.ai, IPPROTO_UDP);
michael@0: 	tt_assert(a);
michael@0: 	test_ai_eq(a, "5.6.7.8", SOCK_DGRAM, IPPROTO_UDP);
michael@0: 	evutil_freeaddrinfo(local_outcome.ai);
michael@0: 	local_outcome.ai = NULL;
michael@0: 
michael@0: 	/* 1e. nodename is NULL (bind) */
michael@0: 	memset(&hints, 0, sizeof(hints));
michael@0: 	memset(&local_outcome, 0, sizeof(local_outcome));
michael@0: 	hints.ai_family = PF_UNSPEC;
michael@0: 	hints.ai_socktype = SOCK_DGRAM;
michael@0: 	hints.ai_flags = EVUTIL_AI_PASSIVE;
michael@0: 	r = evdns_getaddrinfo(dns_base, NULL, "9090",
michael@0: 	    &hints, gai_cb, &local_outcome);
michael@0: 	tt_assert(!r);
michael@0: 	tt_int_op(local_outcome.err,==,0);
michael@0: 	tt_assert(local_outcome.ai);
michael@0: 	/* we should get a v4 address of 0.0.0.0... */
michael@0: 	a = ai_find_by_family(local_outcome.ai, PF_INET);
michael@0: 	tt_assert(a);
michael@0: 	test_ai_eq(a, "0.0.0.0:9090", SOCK_DGRAM, IPPROTO_UDP);
michael@0: 	/* ... and a v6 address of ::0 */
michael@0: 	a = ai_find_by_family(local_outcome.ai, PF_INET6);
michael@0: 	tt_assert(a);
michael@0: 	test_ai_eq(a, "[::]:9090", SOCK_DGRAM, IPPROTO_UDP);
michael@0: 	evutil_freeaddrinfo(local_outcome.ai);
michael@0: 	local_outcome.ai = NULL;
michael@0: 
michael@0: 	/* 1f. nodename is NULL (connect) */
michael@0: 	memset(&hints, 0, sizeof(hints));
michael@0: 	memset(&local_outcome, 0, sizeof(local_outcome));
michael@0: 	hints.ai_family = PF_UNSPEC;
michael@0: 	hints.ai_socktype = SOCK_STREAM;
michael@0: 	r = evdns_getaddrinfo(dns_base, NULL, "2",
michael@0: 	    &hints, gai_cb, &local_outcome);
michael@0: 	tt_assert(!r);
michael@0: 	tt_int_op(local_outcome.err,==,0);
michael@0: 	tt_assert(local_outcome.ai);
michael@0: 	/* we should get a v4 address of 127.0.0.1 .... */
michael@0: 	a = ai_find_by_family(local_outcome.ai, PF_INET);
michael@0: 	tt_assert(a);
michael@0: 	test_ai_eq(a, "127.0.0.1:2", SOCK_STREAM, IPPROTO_TCP);
michael@0: 	/* ... and a v6 address of ::1 */
michael@0: 	a = ai_find_by_family(local_outcome.ai, PF_INET6);
michael@0: 	tt_assert(a);
michael@0: 	test_ai_eq(a, "[::1]:2", SOCK_STREAM, IPPROTO_TCP);
michael@0: 	evutil_freeaddrinfo(local_outcome.ai);
michael@0: 	local_outcome.ai = NULL;
michael@0: 
michael@0: 	/* 1g. We find localhost immediately. (pf_unspec) */
michael@0: 	memset(&hints, 0, sizeof(hints));
michael@0: 	memset(&local_outcome, 0, sizeof(local_outcome));
michael@0: 	hints.ai_family = PF_UNSPEC;
michael@0: 	hints.ai_socktype = SOCK_STREAM;
michael@0: 	r = evdns_getaddrinfo(dns_base, "LOCALHOST", "80",
michael@0: 	    &hints, gai_cb, &local_outcome);
michael@0: 	tt_assert(!r);
michael@0: 	tt_int_op(local_outcome.err,==,0);
michael@0: 	tt_assert(local_outcome.ai);
michael@0: 	/* we should get a v4 address of 127.0.0.1 .... */
michael@0: 	a = ai_find_by_family(local_outcome.ai, PF_INET);
michael@0: 	tt_assert(a);
michael@0: 	test_ai_eq(a, "127.0.0.1:80", SOCK_STREAM, IPPROTO_TCP);
michael@0: 	/* ... and a v6 address of ::1 */
michael@0: 	a = ai_find_by_family(local_outcome.ai, PF_INET6);
michael@0: 	tt_assert(a);
michael@0: 	test_ai_eq(a, "[::1]:80", SOCK_STREAM, IPPROTO_TCP);
michael@0: 	evutil_freeaddrinfo(local_outcome.ai);
michael@0: 	local_outcome.ai = NULL;
michael@0: 
michael@0: 	/* 1g. We find localhost immediately. (pf_inet6) */
michael@0: 	memset(&hints, 0, sizeof(hints));
michael@0: 	memset(&local_outcome, 0, sizeof(local_outcome));
michael@0: 	hints.ai_family = PF_INET6;
michael@0: 	hints.ai_socktype = SOCK_STREAM;
michael@0: 	r = evdns_getaddrinfo(dns_base, "LOCALHOST", "9999",
michael@0: 	    &hints, gai_cb, &local_outcome);
michael@0: 	tt_assert(! r);
michael@0: 	tt_int_op(local_outcome.err,==,0);
michael@0: 	tt_assert(local_outcome.ai);
michael@0: 	a = local_outcome.ai;
michael@0: 	test_ai_eq(a, "[::1]:9999", SOCK_STREAM, IPPROTO_TCP);
michael@0: 	tt_ptr_op(a->ai_next, ==, NULL);
michael@0: 	evutil_freeaddrinfo(local_outcome.ai);
michael@0: 	local_outcome.ai = NULL;
michael@0: 
michael@0: 	/* 2. Okay, now we can actually test the asynchronous resolver. */
michael@0: 	/* Start a dummy local dns server... */
michael@0: 	port = regress_get_dnsserver(data->base, &dns_port, NULL,
michael@0: 	    be_getaddrinfo_server_cb, &n_dns_questions);
michael@0: 	tt_assert(port);
michael@0: 	tt_int_op(dns_port, >=, 0);
michael@0: 	/* ... and tell the evdns_base about it. */
michael@0: 	evutil_snprintf(buf, sizeof(buf), "127.0.0.1:%d", dns_port);
michael@0: 	evdns_base_nameserver_ip_add(dns_base, buf);
michael@0: 
michael@0: 	memset(&hints, 0, sizeof(hints));
michael@0: 	hints.ai_family = PF_UNSPEC;
michael@0: 	hints.ai_socktype = SOCK_STREAM;
michael@0: 	hints.ai_flags = EVUTIL_AI_CANONNAME;
michael@0: 	/* 0: Request for both.example.com should return both addresses. */
michael@0: 	r = evdns_getaddrinfo(dns_base, "both.example.com", "8000",
michael@0: 	    &hints, gai_cb, &a_out[0]);
michael@0: 	tt_assert(r);
michael@0: 
michael@0: 	/* 1: Request for v4only.example.com should return one address. */
michael@0: 	r = evdns_getaddrinfo(dns_base, "v4only.example.com", "8001",
michael@0: 	    &hints, gai_cb, &a_out[1]);
michael@0: 	tt_assert(r);
michael@0: 
michael@0: 	/* 2: Request for v6only.example.com should return one address. */
michael@0: 	hints.ai_flags = 0;
michael@0: 	r = evdns_getaddrinfo(dns_base, "v6only.example.com", "8002",
michael@0: 	    &hints, gai_cb, &a_out[2]);
michael@0: 	tt_assert(r);
michael@0: 
michael@0: 	/* 3: PF_INET request for v4assert.example.com should not generate a
michael@0: 	 * v6 request.	The server will fail the test if it does. */
michael@0: 	hints.ai_family = PF_INET;
michael@0: 	r = evdns_getaddrinfo(dns_base, "v4assert.example.com", "8003",
michael@0: 	    &hints, gai_cb, &a_out[3]);
michael@0: 	tt_assert(r);
michael@0: 
michael@0: 	/* 4: PF_INET6 request for v6assert.example.com should not generate a
michael@0: 	 * v4 request.	The server will fail the test if it does. */
michael@0: 	hints.ai_family = PF_INET6;
michael@0: 	r = evdns_getaddrinfo(dns_base, "v6assert.example.com", "8004",
michael@0: 	    &hints, gai_cb, &a_out[4]);
michael@0: 	tt_assert(r);
michael@0: 
michael@0: 	/* 5: PF_INET request for nosuchplace.example.com should give NEXIST. */
michael@0: 	hints.ai_family = PF_INET;
michael@0: 	r = evdns_getaddrinfo(dns_base, "nosuchplace.example.com", "8005",
michael@0: 	    &hints, gai_cb, &a_out[5]);
michael@0: 	tt_assert(r);
michael@0: 
michael@0: 	/* 6: PF_UNSPEC request for nosuchplace.example.com should give NEXIST.
michael@0: 	 */
michael@0: 	hints.ai_family = PF_UNSPEC;
michael@0: 	r = evdns_getaddrinfo(dns_base, "nosuchplace.example.com", "8006",
michael@0: 	    &hints, gai_cb, &a_out[6]);
michael@0: 	tt_assert(r);
michael@0: 
michael@0: 	/* 7: PF_UNSPEC request for v6timeout.example.com should give an ipv4
michael@0: 	 * address only. */
michael@0: 	hints.ai_family = PF_UNSPEC;
michael@0: 	r = evdns_getaddrinfo(dns_base, "v6timeout.example.com", "8007",
michael@0: 	    &hints, gai_cb, &a_out[7]);
michael@0: 	tt_assert(r);
michael@0: 
michael@0: 	/* 8: PF_UNSPEC request for v6timeout-nonexist.example.com should give
michael@0: 	 * a NEXIST */
michael@0: 	hints.ai_family = PF_UNSPEC;
michael@0: 	r = evdns_getaddrinfo(dns_base, "v6timeout-nonexist.example.com",
michael@0: 	    "8008", &hints, gai_cb, &a_out[8]);
michael@0: 	tt_assert(r);
michael@0: 
michael@0: 	/* 9: AI_ADDRCONFIG should at least not crash.	Can't test it more
michael@0: 	 * without knowing what kind of internet we have. */
michael@0: 	hints.ai_flags |= EVUTIL_AI_ADDRCONFIG;
michael@0: 	r = evdns_getaddrinfo(dns_base, "both.example.com",
michael@0: 	    "8009", &hints, gai_cb, &a_out[9]);
michael@0: 	tt_assert(r);
michael@0: 
michael@0: 	/* 10: PF_UNSPEC for v4timeout.example.com should give an ipv6 address
michael@0: 	 * only. */
michael@0: 	hints.ai_family = PF_UNSPEC;
michael@0: 	hints.ai_flags = 0;
michael@0: 	r = evdns_getaddrinfo(dns_base, "v4timeout.example.com", "8010",
michael@0: 	    &hints, gai_cb, &a_out[10]);
michael@0: 	tt_assert(r);
michael@0: 
michael@0: 	/* 11: timeout.example.com: cancel it after 100 msec. */
michael@0: 	r = evdns_getaddrinfo(dns_base, "all-timeout.example.com", "8011",
michael@0: 	    &hints, gai_cb, &a_out[11]);
michael@0: 	tt_assert(r);
michael@0: 	{
michael@0: 		struct timeval tv;
michael@0: 		tv.tv_sec = 0;
michael@0: 		tv.tv_usec = 100*1000; /* 100 msec */
michael@0: 		event_base_once(data->base, -1, EV_TIMEOUT, cancel_gai_cb,
michael@0: 		    r, &tv);
michael@0: 	}
michael@0: 
michael@0: 	/* XXXXX There are more tests we could do, including:
michael@0: 
michael@0: 	   - A test to elicit NODATA.
michael@0: 
michael@0: 	 */
michael@0: 
michael@0: 	n_gai_results_pending = 12;
michael@0: 	exit_base_on_no_pending_results = data->base;
michael@0: 
michael@0: 	event_base_dispatch(data->base);
michael@0: 
michael@0: 	/* 0: both.example.com */
michael@0: 	tt_int_op(a_out[0].err, ==, 0);
michael@0: 	tt_assert(a_out[0].ai);
michael@0: 	tt_assert(a_out[0].ai->ai_next);
michael@0: 	tt_assert(!a_out[0].ai->ai_next->ai_next);
michael@0: 	a = ai_find_by_family(a_out[0].ai, PF_INET);
michael@0: 	tt_assert(a);
michael@0: 	test_ai_eq(a, "80.80.32.32:8000", SOCK_STREAM, IPPROTO_TCP);
michael@0: 	a = ai_find_by_family(a_out[0].ai, PF_INET6);
michael@0: 	tt_assert(a);
michael@0: 	test_ai_eq(a, "[80ff::bbbb]:8000", SOCK_STREAM, IPPROTO_TCP);
michael@0: 	tt_assert(a_out[0].ai->ai_canonname);
michael@0: 	tt_str_op(a_out[0].ai->ai_canonname, ==, "both-canonical.example.com");
michael@0: 
michael@0: 	/* 1: v4only.example.com */
michael@0: 	tt_int_op(a_out[1].err, ==, 0);
michael@0: 	tt_assert(a_out[1].ai);
michael@0: 	tt_assert(! a_out[1].ai->ai_next);
michael@0: 	test_ai_eq(a_out[1].ai, "18.52.86.120:8001", SOCK_STREAM, IPPROTO_TCP);
michael@0: 	tt_assert(a_out[1].ai->ai_canonname == NULL);
michael@0: 
michael@0: 
michael@0: 	/* 2: v6only.example.com */
michael@0: 	tt_int_op(a_out[2].err, ==, 0);
michael@0: 	tt_assert(a_out[2].ai);
michael@0: 	tt_assert(! a_out[2].ai->ai_next);
michael@0: 	test_ai_eq(a_out[2].ai, "[b0b::f00d]:8002", SOCK_STREAM, IPPROTO_TCP);
michael@0: 
michael@0: 	/* 3: v4assert.example.com */
michael@0: 	tt_int_op(a_out[3].err, ==, 0);
michael@0: 	tt_assert(a_out[3].ai);
michael@0: 	tt_assert(! a_out[3].ai->ai_next);
michael@0: 	test_ai_eq(a_out[3].ai, "18.52.86.120:8003", SOCK_STREAM, IPPROTO_TCP);
michael@0: 
michael@0: 	/* 4: v6assert.example.com */
michael@0: 	tt_int_op(a_out[4].err, ==, 0);
michael@0: 	tt_assert(a_out[4].ai);
michael@0: 	tt_assert(! a_out[4].ai->ai_next);
michael@0: 	test_ai_eq(a_out[4].ai, "[b0b::f00d]:8004", SOCK_STREAM, IPPROTO_TCP);
michael@0: 
michael@0: 	/* 5: nosuchplace.example.com (inet) */
michael@0: 	tt_int_op(a_out[5].err, ==, EVUTIL_EAI_NONAME);
michael@0: 	tt_assert(! a_out[5].ai);
michael@0: 
michael@0: 	/* 6: nosuchplace.example.com (unspec) */
michael@0: 	tt_int_op(a_out[6].err, ==, EVUTIL_EAI_NONAME);
michael@0: 	tt_assert(! a_out[6].ai);
michael@0: 
michael@0: 	/* 7: v6timeout.example.com */
michael@0: 	tt_int_op(a_out[7].err, ==, 0);
michael@0: 	tt_assert(a_out[7].ai);
michael@0: 	tt_assert(! a_out[7].ai->ai_next);
michael@0: 	test_ai_eq(a_out[7].ai, "171.205.239.1:8007", SOCK_STREAM, IPPROTO_TCP);
michael@0: 
michael@0: 	/* 8: v6timeout-nonexist.example.com */
michael@0: 	tt_int_op(a_out[8].err, ==, EVUTIL_EAI_NONAME);
michael@0: 	tt_assert(! a_out[8].ai);
michael@0: 
michael@0: 	/* 9: both (ADDRCONFIG) */
michael@0: 	tt_int_op(a_out[9].err, ==, 0);
michael@0: 	tt_assert(a_out[9].ai);
michael@0: 	a = ai_find_by_family(a_out[9].ai, PF_INET);
michael@0: 	if (a)
michael@0: 		test_ai_eq(a, "80.80.32.32:8009", SOCK_STREAM, IPPROTO_TCP);
michael@0: 	else
michael@0: 		tt_assert(ai_find_by_family(a_out[9].ai, PF_INET6));
michael@0: 	a = ai_find_by_family(a_out[9].ai, PF_INET6);
michael@0: 	if (a)
michael@0: 		test_ai_eq(a, "[80ff::bbbb]:8009", SOCK_STREAM, IPPROTO_TCP);
michael@0: 	else
michael@0: 		tt_assert(ai_find_by_family(a_out[9].ai, PF_INET));
michael@0: 
michael@0: 	/* 10: v4timeout.example.com */
michael@0: 	tt_int_op(a_out[10].err, ==, 0);
michael@0: 	tt_assert(a_out[10].ai);
michael@0: 	tt_assert(! a_out[10].ai->ai_next);
michael@0: 	test_ai_eq(a_out[10].ai, "[a0a::ff01]:8010", SOCK_STREAM, IPPROTO_TCP);
michael@0: 
michael@0: 	/* 11: cancelled request. */
michael@0: 	tt_int_op(a_out[11].err, ==, EVUTIL_EAI_CANCEL);
michael@0: 	tt_assert(a_out[11].ai == NULL);
michael@0: 
michael@0: end:
michael@0: 	if (local_outcome.ai)
michael@0: 		evutil_freeaddrinfo(local_outcome.ai);
michael@0: 	for (i=0;i<10;++i) {
michael@0: 		if (a_out[i].ai)
michael@0: 			evutil_freeaddrinfo(a_out[i].ai);
michael@0: 	}
michael@0: 	if (port)
michael@0: 		evdns_close_server_port(port);
michael@0: 	if (dns_base)
michael@0: 		evdns_base_free(dns_base, 0);
michael@0: }
michael@0: 
michael@0: struct gaic_request_status {
michael@0: 	int magic;
michael@0: 	struct event_base *base;
michael@0: 	struct evdns_base *dns_base;
michael@0: 	struct evdns_getaddrinfo_request *request;
michael@0: 	struct event cancel_event;
michael@0: 	int canceled;
michael@0: };
michael@0: 
michael@0: #define GAIC_MAGIC 0x1234abcd
michael@0: 
michael@0: static int pending = 0;
michael@0: 
michael@0: static void
michael@0: gaic_cancel_request_cb(evutil_socket_t fd, short what, void *arg)
michael@0: {
michael@0: 	struct gaic_request_status *status = arg;
michael@0: 
michael@0: 	tt_assert(status->magic == GAIC_MAGIC);
michael@0: 	status->canceled = 1;
michael@0: 	evdns_getaddrinfo_cancel(status->request);
michael@0: 	return;
michael@0: end:
michael@0: 	event_base_loopexit(status->base, NULL);
michael@0: }
michael@0: 
michael@0: static void
michael@0: gaic_server_cb(struct evdns_server_request *req, void *arg)
michael@0: {
michael@0: 	ev_uint32_t answer = 0x7f000001;
michael@0: 	tt_assert(req->nquestions);
michael@0: 	evdns_server_request_add_a_reply(req, req->questions[0]->name, 1,
michael@0: 	    &answer, 100);
michael@0: 	evdns_server_request_respond(req, 0);
michael@0: 	return;
michael@0: end:
michael@0: 	evdns_server_request_respond(req, DNS_ERR_REFUSED);
michael@0: }
michael@0: 
michael@0: 
michael@0: static void
michael@0: gaic_getaddrinfo_cb(int result, struct evutil_addrinfo *res, void *arg)
michael@0: {
michael@0: 	struct gaic_request_status *status = arg;
michael@0: 	struct event_base *base = status->base;
michael@0: 	tt_assert(status->magic == GAIC_MAGIC);
michael@0: 
michael@0: 	if (result == EVUTIL_EAI_CANCEL) {
michael@0: 		tt_assert(status->canceled);
michael@0: 	}
michael@0: 	event_del(&status->cancel_event);
michael@0: 
michael@0: 	memset(status, 0xf0, sizeof(*status));
michael@0: 	free(status);
michael@0: 
michael@0: end:
michael@0: 	if (--pending <= 0)
michael@0: 		event_base_loopexit(base, NULL);
michael@0: }
michael@0: 
michael@0: static void
michael@0: gaic_launch(struct event_base *base, struct evdns_base *dns_base)
michael@0: {
michael@0: 	struct gaic_request_status *status = calloc(1,sizeof(*status));
michael@0: 	struct timeval tv = { 0, 10000 };
michael@0: 	status->magic = GAIC_MAGIC;
michael@0: 	status->base = base;
michael@0: 	status->dns_base = dns_base;
michael@0: 	event_assign(&status->cancel_event, base, -1, 0, gaic_cancel_request_cb,
michael@0: 	    status);
michael@0: 	status->request = evdns_getaddrinfo(dns_base,
michael@0: 	    "foobar.bazquux.example.com", "80", NULL, gaic_getaddrinfo_cb,
michael@0: 	    status);
michael@0: 	event_add(&status->cancel_event, &tv);
michael@0: 	++pending;
michael@0: }
michael@0: 
michael@0: #ifdef EVENT_SET_MEM_FUNCTIONS_IMPLEMENTED
michael@0: /* FIXME: We should move this to regress_main.c if anything else needs it.*/
michael@0: 
michael@0: /* Trivial replacements for malloc/free/realloc to check for memory leaks.
michael@0:  * Not threadsafe. */
michael@0: static int allocated_chunks = 0;
michael@0: 
michael@0: static void *
michael@0: cnt_malloc(size_t sz)
michael@0: {
michael@0: 	allocated_chunks += 1;
michael@0: 	return malloc(sz);
michael@0: }
michael@0: 
michael@0: static void *
michael@0: cnt_realloc(void *old, size_t sz)
michael@0: {
michael@0: 	if (!old)
michael@0: 		allocated_chunks += 1;
michael@0: 	if (!sz)
michael@0: 		allocated_chunks -= 1;
michael@0: 	return realloc(old, sz);
michael@0: }
michael@0: 
michael@0: static void
michael@0: cnt_free(void *ptr)
michael@0: {
michael@0: 	allocated_chunks -= 1;
michael@0: 	free(ptr);
michael@0: }
michael@0: 
michael@0: struct testleak_env_t {
michael@0: 	struct event_base *base;
michael@0: 	struct evdns_base *dns_base;
michael@0: 	struct evdns_request *req;
michael@0: 	struct generic_dns_callback_result r;
michael@0: };
michael@0: 
michael@0: static void *
michael@0: testleak_setup(const struct testcase_t *testcase)
michael@0: {
michael@0: 	struct testleak_env_t *env;
michael@0: 
michael@0: 	allocated_chunks = 0;
michael@0: 	event_set_mem_functions(cnt_malloc, cnt_realloc, cnt_free);
michael@0: 	event_enable_debug_mode();
michael@0: 
michael@0: 	/* not mm_calloc: we don't want to mess with the count. */
michael@0: 	env = calloc(1, sizeof(struct testleak_env_t));
michael@0: 	env->base = event_base_new();
michael@0: 	env->dns_base = evdns_base_new(env->base, 0);
michael@0: 	env->req = evdns_base_resolve_ipv4(
michael@0: 		env->dns_base, "example.com", DNS_QUERY_NO_SEARCH,
michael@0: 		generic_dns_callback, &env->r);
michael@0: 	return env;
michael@0: }
michael@0: 
michael@0: static int
michael@0: testleak_cleanup(const struct testcase_t *testcase, void *env_)
michael@0: {
michael@0: 	int ok = 0;
michael@0: 	struct testleak_env_t *env = env_;
michael@0: 	tt_assert(env);
michael@0: #ifdef _EVENT_DISABLE_DEBUG_MODE
michael@0: 	tt_int_op(allocated_chunks, ==, 0);
michael@0: #else
michael@0: 	/* FIXME: that's `1' because of event_debug_map_HT_GROW */
michael@0: 	tt_int_op(allocated_chunks, ==, 1);
michael@0: #endif
michael@0: 	ok = 1;
michael@0: end:
michael@0: 	if (env) {
michael@0: 		if (env->dns_base)
michael@0: 			evdns_base_free(env->dns_base, 0);
michael@0: 		if (env->base)
michael@0: 			event_base_free(env->base);
michael@0: 		free(env);
michael@0: 	}
michael@0: 	return ok;
michael@0: }
michael@0: 
michael@0: static struct testcase_setup_t testleak_funcs = {
michael@0: 	testleak_setup, testleak_cleanup
michael@0: };
michael@0: 
michael@0: static void
michael@0: test_dbg_leak_cancel(void *env_)
michael@0: {
michael@0: 	/* cancel, loop, free/dns, free/base */
michael@0: 	struct testleak_env_t *env = env_;
michael@0: 	int send_err_shutdown = 1;
michael@0: 	evdns_cancel_request(env->dns_base, env->req);
michael@0: 	env->req = 0;
michael@0: 
michael@0: 	/* `req` is freed in callback, that's why one loop is required. */
michael@0: 	event_base_loop(env->base, EVLOOP_NONBLOCK);
michael@0: 
michael@0: 	/* send_err_shutdown means nothing as soon as our request is
michael@0: 	 * already canceled */
michael@0: 	evdns_base_free(env->dns_base, send_err_shutdown);
michael@0: 	env->dns_base = 0;
michael@0: 	event_base_free(env->base);
michael@0: 	env->base = 0;
michael@0: }
michael@0: 
michael@0: static void
michael@0: test_dbg_leak_shutdown(void *env_)
michael@0: {
michael@0: 	/* free/dns, loop, free/base */
michael@0: 	struct testleak_env_t *env = env_;
michael@0: 	int send_err_shutdown = 1;
michael@0: 
michael@0: 	/* `req` is freed both with `send_err_shutdown` and without it,
michael@0: 	 * the only difference is `evdns_callback` call */
michael@0: 	env->req = 0;
michael@0: 
michael@0: 	evdns_base_free(env->dns_base, send_err_shutdown);
michael@0: 	env->dns_base = 0;
michael@0: 
michael@0: 	/* `req` is freed in callback, that's why one loop is required */
michael@0: 	event_base_loop(env->base, EVLOOP_NONBLOCK);
michael@0: 	event_base_free(env->base);
michael@0: 	env->base = 0;
michael@0: }
michael@0: #endif
michael@0: 
michael@0: static void
michael@0: test_getaddrinfo_async_cancel_stress(void *ptr)
michael@0: {
michael@0: 	struct event_base *base;
michael@0: 	struct evdns_base *dns_base = NULL;
michael@0: 	struct evdns_server_port *server = NULL;
michael@0: 	evutil_socket_t fd = -1;
michael@0: 	struct sockaddr_in sin;
michael@0: 	struct sockaddr_storage ss;
michael@0: 	ev_socklen_t slen;
michael@0: 	int i;
michael@0: 
michael@0: 	base = event_base_new();
michael@0: 	dns_base = evdns_base_new(base, 0);
michael@0: 
michael@0: 	memset(&sin, 0, sizeof(sin));
michael@0: 	sin.sin_family = AF_INET;
michael@0: 	sin.sin_port = 0;
michael@0: 	sin.sin_addr.s_addr = htonl(0x7f000001);
michael@0: 	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
michael@0: 		tt_abort_perror("socket");
michael@0: 	}
michael@0: 	evutil_make_socket_nonblocking(fd);
michael@0: 	if (bind(fd, (struct sockaddr*)&sin, sizeof(sin))<0) {
michael@0: 		tt_abort_perror("bind");
michael@0: 	}
michael@0: 	server = evdns_add_server_port_with_base(base, fd, 0, gaic_server_cb,
michael@0: 	    base);
michael@0: 
michael@0: 	memset(&ss, 0, sizeof(ss));
michael@0: 	slen = sizeof(ss);
michael@0: 	if (getsockname(fd, (struct sockaddr*)&ss, &slen)<0) {
michael@0: 		tt_abort_perror("getsockname");
michael@0: 	}
michael@0: 	evdns_base_nameserver_sockaddr_add(dns_base,
michael@0: 	    (struct sockaddr*)&ss, slen, 0);
michael@0: 
michael@0: 	for (i = 0; i < 1000; ++i) {
michael@0: 		gaic_launch(base, dns_base);
michael@0: 	}
michael@0: 
michael@0: 	event_base_dispatch(base);
michael@0: 
michael@0: end:
michael@0: 	if (dns_base)
michael@0: 		evdns_base_free(dns_base, 1);
michael@0: 	if (server)
michael@0: 		evdns_close_server_port(server);
michael@0: 	if (fd >= 0)
michael@0: 		evutil_closesocket(fd);
michael@0: }
michael@0: 
michael@0: 
michael@0: #define DNS_LEGACY(name, flags)					       \
michael@0: 	{ #name, run_legacy_test_fn, flags|TT_LEGACY, &legacy_setup,   \
michael@0: 		    dns_##name }
michael@0: 
michael@0: struct testcase_t dns_testcases[] = {
michael@0: 	DNS_LEGACY(server, TT_FORK|TT_NEED_BASE),
michael@0: 	DNS_LEGACY(gethostbyname, TT_FORK|TT_NEED_BASE|TT_NEED_DNS),
michael@0: 	DNS_LEGACY(gethostbyname6, TT_FORK|TT_NEED_BASE|TT_NEED_DNS),
michael@0: 	DNS_LEGACY(gethostbyaddr, TT_FORK|TT_NEED_BASE|TT_NEED_DNS),
michael@0: 	{ "resolve_reverse", dns_resolve_reverse, TT_FORK, NULL, NULL },
michael@0: 	{ "search", dns_search_test, TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
michael@0: 	{ "search_cancel", dns_search_cancel_test,
michael@0: 	  TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
michael@0: 	{ "retry", dns_retry_test, TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
michael@0: 	{ "reissue", dns_reissue_test, TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
michael@0: 	{ "inflight", dns_inflight_test, TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
michael@0: 	{ "bufferevent_connect_hostname", test_bufferevent_connect_hostname,
michael@0: 	  TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
michael@0: 
michael@0: 	{ "getaddrinfo_async", test_getaddrinfo_async,
michael@0: 	  TT_FORK|TT_NEED_BASE, &basic_setup, (char*)"" },
michael@0: 	{ "getaddrinfo_cancel_stress", test_getaddrinfo_async_cancel_stress,
michael@0: 	  TT_FORK, NULL, NULL },
michael@0: 
michael@0: #ifdef EVENT_SET_MEM_FUNCTIONS_IMPLEMENTED
michael@0: 	{ "leak_shutdown", test_dbg_leak_shutdown, TT_FORK, &testleak_funcs, NULL },
michael@0: 	{ "leak_cancel", test_dbg_leak_cancel, TT_FORK, &testleak_funcs, NULL },
michael@0: #endif
michael@0: 
michael@0: 	END_OF_TESTCASES
michael@0: };
michael@0: