1 files changed, 354 insertions, 0 deletions
diff --git a/lib/libc/tests/resolv/resolv_test.c b/lib/libc/tests/resolv/resolv_test.c
new file mode 100644
index 000000000000..d7b836ed8f3e
--- /dev/null
+++ b/lib/libc/tests/resolv/resolv_test.c
@@ -0,0 +1,354 @@
+/*	$NetBSD: resolv.c,v 1.6 2004/05/23 16:59:11 christos Exp $	*/
+
+/*-
+ * Copyright (c) 2004 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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 <sys/cdefs.h>
+__RCSID("$NetBSD: resolv.c,v 1.6 2004/05/23 16:59:11 christos Exp $");
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <assert.h>
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdatomic.h>
+#include <netdb.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <stringlist.h>
+
+#include <atf-c.h>
+
+#define NTHREADS	10
+#define NHOSTS		100
+#define WS		" \t\n\r"
+
+enum method {
+	METHOD_GETADDRINFO,
+	METHOD_GETHOSTBY,
+	METHOD_GETIPNODEBY
+};
+
+static StringList *hosts = NULL;
+static _Atomic(int) *ask = NULL;
+static _Atomic(int) *got = NULL;
+static bool debug_output = 0;
+
+static void load(const char *);
+static void resolvone(long, int, enum method);
+static void *resolvloop(void *);
+static pthread_t run(int, enum method, long);
+
+#define	DBG(...) do {					\
+	if (debug_output)				\
+		dprintf(STDOUT_FILENO, __VA_ARGS__);	\
+	} while (0)
+
+static void
+load(const char *fname)
+{
+	FILE *fp;
+	size_t linecap;
+	char *line;
+
+	fp = fopen(fname, "r");
+	ATF_REQUIRE(fp != NULL);
+	line = NULL;
+	linecap = 0;
+	while (getline(&line, &linecap, fp) >= 0) {
+		char *ptr;
+
+		for (ptr = strtok(line, WS); ptr; ptr = strtok(NULL, WS)) {
+			if (ptr[0] == '#')
+				break;
+			sl_add(hosts, strdup(ptr));
+		}
+	}
+	free(line);
+
+	(void)fclose(fp);
+}
+
+static int
+resolv_getaddrinfo(long threadnum, char *host, int port, const char **errstr)
+{
+	char portstr[6], hbuf[NI_MAXHOST], pbuf[NI_MAXSERV];
+	struct addrinfo hints, *res;
+	int error;
+
+	snprintf(portstr, sizeof(portstr), "%d", port);
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_flags = AI_PASSIVE;
+	hints.ai_socktype = SOCK_STREAM;
+	error = getaddrinfo(host, portstr, &hints, &res);
+	if (error == 0) {
+		DBG("T%ld: host %s ok\n", threadnum, host);
+		memset(hbuf, 0, sizeof(hbuf));
+		memset(pbuf, 0, sizeof(pbuf));
+		getnameinfo(res->ai_addr, res->ai_addrlen, hbuf, sizeof(hbuf),
+		    pbuf, sizeof(pbuf), 0);
+		DBG("T%ld: reverse %s %s\n", threadnum, hbuf, pbuf);
+		freeaddrinfo(res);
+	} else {
+		*errstr = gai_strerror(error);
+		DBG("T%ld: host %s not found: %s\n", threadnum, host, *errstr);
+	}
+	return error;
+}
+
+static int
+resolv_gethostby(long threadnum, char *host, const char **errstr)
+{
+	char buf[1024];
+	struct hostent *hp, *hp2;
+
+	hp = gethostbyname(host);
+	if (hp) {
+		DBG("T%ld: host %s ok\n", threadnum, host);
+		memcpy(buf, hp->h_addr, hp->h_length);
+		hp2 = gethostbyaddr(buf, hp->h_length, hp->h_addrtype);
+		if (hp2) {
+			DBG("T%ld: reverse %s\n", threadnum, hp2->h_name);
+		}
+	} else {
+		*errstr = hstrerror(h_errno);
+		DBG("T%ld: host %s not found: %s\n", threadnum, host, *errstr);
+	}
+	return hp ? 0 : h_errno;
+}
+
+static int
+resolv_getipnodeby(long threadnum, char *host, const char **errstr)
+{
+	char buf[1024];
+	struct hostent *hp, *hp2;
+	int error = 0;
+
+	hp = getipnodebyname(host, AF_INET, 0, &error);
+	if (hp) {
+		DBG("T%ld: host %s ok\n", threadnum, host);
+		memcpy(buf, hp->h_addr, hp->h_length);
+		hp2 = getipnodebyaddr(buf, hp->h_length, hp->h_addrtype,
+		    &error);
+		if (hp2) {
+			DBG("T%ld: reverse %s\n", threadnum, hp2->h_name);
+			freehostent(hp2);
+		}
+		freehostent(hp);
+	} else {
+		*errstr = hstrerror(error);
+		DBG("T%ld: host %s not found: %s\n", threadnum, host, *errstr);
+	}
+	return hp ? 0 : error;
+}
+
+static void
+resolvone(long threadnum, int n, enum method method)
+{
+	const char* errstr = NULL;
+	size_t i = (random() & 0x0fffffff) % hosts->sl_cur;
+	char *host = hosts->sl_str[i];
+	int error;
+
+	DBG("T%ld: %d resolving %s %zd\n", threadnum, n, host, i);
+	switch (method) {
+	case METHOD_GETADDRINFO:
+		error = resolv_getaddrinfo(threadnum, host, i, &errstr);
+		break;
+	case METHOD_GETHOSTBY:
+		error = resolv_gethostby(threadnum, host, &errstr);
+		break;
+	case METHOD_GETIPNODEBY:
+		error = resolv_getipnodeby(threadnum, host, &errstr);
+		break;
+	default:
+		/* UNREACHABLE */
+		/* XXX Needs an __assert_unreachable() for userland. */
+		assert(0 && "Unreachable segment reached");
+		abort();
+		break;
+	}
+	atomic_fetch_add_explicit(&ask[i], 1, memory_order_relaxed);
+	if (error == 0)
+		atomic_fetch_add_explicit(&got[i], 1, memory_order_relaxed);
+	else if (got[i] != 0)
+		fprintf(stderr,
+		    "T%ld ERROR after previous success for %s: %d (%s)\n",
+		    threadnum, hosts->sl_str[i], error, errstr);
+}
+
+struct resolvloop_args {
+	int nhosts;
+	enum method method;
+	long threadnum;
+};
+
+static void *
+resolvloop(void *p)
+{
+	struct resolvloop_args *args = p;
+	int nhosts = args->nhosts;
+
+	if (nhosts == 0) {
+		free(args);
+		return NULL;
+	}
+
+	do {
+		resolvone(args->threadnum, nhosts, args->method);
+	} while (--nhosts);
+	free(args);
+	return (void *)(uintptr_t)nhosts;
+}
+
+static pthread_t
+run(int nhosts, enum method method, long i)
+{
+	pthread_t t;
+	int rc;
+	struct resolvloop_args *args;
+
+	/* Created thread is responsible for free(). */
+	args = malloc(sizeof(*args));
+	ATF_REQUIRE(args != NULL);
+
+	args->nhosts = nhosts;
+	args->method = method;
+	args->threadnum = i + 1;
+	rc = pthread_create(&t, NULL, resolvloop, args);
+	ATF_REQUIRE_MSG(rc == 0, "pthread_create failed: %s", strerror(rc));
+	return t;
+}
+
+static int
+run_tests(const char *hostlist_file, enum method method)
+{
+	size_t nthreads = NTHREADS;
+	pthread_t *threads;
+	size_t nhosts = NHOSTS;
+	size_t i;
+	int c;
+	hosts = sl_init();
+
+	srandom(1234);
+	debug_output = getenv("DEBUG_OUTPUT") != NULL;
+
+	load(hostlist_file);
+
+	ATF_REQUIRE_MSG(0 < hosts->sl_cur, "0 hosts in %s", hostlist_file);
+
+	ask = calloc(hosts->sl_cur, sizeof(int));
+	ATF_REQUIRE(ask != NULL);
+
+	got = calloc(hosts->sl_cur, sizeof(int));
+	ATF_REQUIRE(got != NULL);
+
+	threads = calloc(nthreads, sizeof(pthread_t));
+	ATF_REQUIRE(threads != NULL);
+
+	for (i = 0; i < nthreads; i++) {
+		threads[i] = run(nhosts, method, i);
+	}
+	/* Wait for all threads to join and check that they checked all hosts */
+	for (i = 0; i < nthreads; i++) {
+		size_t remaining;
+
+		remaining = (uintptr_t)pthread_join(threads[i], NULL);
+		ATF_CHECK_EQ_MSG(0, remaining,
+		    "Thread %zd still had %zd hosts to check!", i, remaining);
+	}
+
+	c = 0;
+	for (i = 0; i < hosts->sl_cur; i++) {
+		if (got[i] != 0) {
+			ATF_CHECK_EQ_MSG(ask[i], got[i],
+			    "Error: host %s ask %d got %d", hosts->sl_str[i],
+			    ask[i], got[i]);
+			c += ask[i] != got[i];
+		}
+	}
+	free(threads);
+	free(ask);
+	free(got);
+	sl_free(hosts, 1);
+	return c;
+}
+
+#define	HOSTLIST_FILE	"mach"
+
+#define	RUN_TESTS(tc, method) \
+do {									\
+	char *_hostlist_file;						\
+	ATF_REQUIRE(0 < asprintf(&_hostlist_file, "%s/%s",		\
+	    atf_tc_get_config_var(tc, "srcdir"), HOSTLIST_FILE));	\
+	ATF_REQUIRE(run_tests(_hostlist_file, method) == 0);		\
+} while(0)
+
+ATF_TC(getaddrinfo_test);
+ATF_TC_HEAD(getaddrinfo_test, tc) {
+	atf_tc_set_md_var(tc, "timeout", "1200");
+}
+ATF_TC_BODY(getaddrinfo_test, tc)
+{
+
+	RUN_TESTS(tc, METHOD_GETADDRINFO);
+}
+
+ATF_TC(gethostby_test);
+ATF_TC_HEAD(gethostby_test, tc) {
+	atf_tc_set_md_var(tc, "timeout", "1200");
+}
+ATF_TC_BODY(gethostby_test, tc)
+{
+
+	RUN_TESTS(tc, METHOD_GETHOSTBY);
+}
+
+ATF_TC(getipnodeby_test);
+ATF_TC_HEAD(getipnodeby_test, tc) {
+
+	atf_tc_set_md_var(tc, "timeout", "1200");
+}
+ATF_TC_BODY(getipnodeby_test, tc)
+{
+
+	RUN_TESTS(tc, METHOD_GETIPNODEBY);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, getaddrinfo_test);
+	ATF_TP_ADD_TC(tp, gethostby_test);
+	ATF_TP_ADD_TC(tp, getipnodeby_test);
+
+	return (atf_no_error());
+}