1 files changed, 271 insertions, 0 deletions
diff --git a/lib/libc/tests/net/getaddrinfo/getaddrinfo.c b/lib/libc/tests/net/getaddrinfo/getaddrinfo.c
new file mode 100644
index 000000000000..1e066add3119
--- /dev/null
+++ b/lib/libc/tests/net/getaddrinfo/getaddrinfo.c
@@ -0,0 +1,271 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2025 Gleb Smirnoff <glebius@FreeBSD.org>
+ *
+ * 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 AUTHOR 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 AUTHOR 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 <dlfcn.h>
+#include <errno.h>
+#include <netdb.h>
+#include <stdlib.h>
+#include <string.h>
+#include <resolv.h>
+
+#include <atf-c.h>
+
+static const char goodname[] = "www.freebsd.org";
+static const char goodname_dot[] = "www.freebsd.org.";
+static const char badname[] = "does-not-exist.freebsd.org";
+static const char badname_dot[] = "does-not-exist.freebsd.org.";
+static const char ipv6onlyname[] = "beefy15.nyi.freebsd.org";
+static const char ipv6onlyname_dot[] = "beefy15.nyi.freebsd.org.";
+static const char ipv4onlyname[] = "ipv4only.arpa";
+static const char ipv4onlyname_dot[] = "ipv4only.arpa.";
+/*
+ * We need an IP address that doesn't exist, but not reported with ICMP
+ * unreachable by the nearest router.  Let's try TEST-NET-3.
+ */
+static char badresolvconf[] =	"nameserver 203.0.113.1";
+static char badresolvconf2[] =	"nameserver 203.0.113.1\n"
+				"nameserver 203.0.113.2";
+static char *resconf = NULL;
+FILE *
+fopen(const char * restrict path, const char * restrict mode)
+{
+	static FILE *(*orig)(const char *, const char *);
+
+	if (orig == NULL && (orig = dlsym(RTLD_NEXT, "fopen")) == NULL)
+		atf_libc_error(ENOENT, "dlsym(fopen): %s", dlerror());
+	if (resconf != NULL && strcmp(path, _PATH_RESCONF) == 0)
+		return (fmemopen(resconf, strlen(resconf), mode));
+	else
+		return (orig(path, mode));
+}
+
+static int send_error = 0;
+ssize_t
+send(int s, const void *msg, size_t len, int flags)
+{
+	static ssize_t (*orig)(int, const void *, size_t, int);
+
+	if (orig == NULL && (orig = dlsym(RTLD_NEXT, "send")) == NULL)
+		atf_libc_error(ENOENT, "dlsym(send): %s", dlerror());
+	if (send_error != 0) {
+		errno = send_error;
+		return (-1);
+	} else {
+		return (orig(s, msg, len, flags));
+	}
+}
+
+ATF_TC(basic);
+ATF_TC_HEAD(basic, tc)
+{
+	atf_tc_set_md_var(tc, "require.config", "allow_network_access");
+}
+
+ATF_TC_BODY(basic, tc)
+{
+	static const struct addrinfo hints = {
+		.ai_family = AF_UNSPEC,
+		.ai_flags = AI_CANONNAME,
+	};
+	struct addrinfo *res;
+	int rv;
+
+	rv = getaddrinfo(goodname, NULL, &hints, &res);
+	ATF_REQUIRE_MSG(rv == 0,
+	    "Expected 0, got %d (%s)", rv, gai_strerror(rv));
+	freeaddrinfo(res);
+
+	rv = getaddrinfo(goodname_dot, NULL, &hints, &res);
+	ATF_REQUIRE_MSG(rv == 0,
+	    "Expected 0, got %d (%s)", rv, gai_strerror(rv));
+	freeaddrinfo(res);
+
+	rv = getaddrinfo(badname, NULL, &hints, &res);
+	ATF_REQUIRE_MSG(rv == EAI_NONAME,
+	    "Expected %d (EAI_NONAME), got %d (%s)",
+	    EAI_NONAME, rv, gai_strerror(rv));
+
+	rv = getaddrinfo(badname_dot, NULL, &hints, &res);
+	ATF_REQUIRE_MSG(rv == EAI_NONAME,
+	    "Expected %d (EAI_NONAME), got %d (%s)",
+	    EAI_NONAME, rv, gai_strerror(rv));
+}
+
+ATF_TC_WITHOUT_HEAD(timeout);
+ATF_TC_BODY(timeout, tc)
+{
+	static const struct addrinfo hints = {
+		.ai_family = AF_UNSPEC,
+		.ai_flags = AI_CANONNAME,
+	};
+	struct addrinfo *res;
+	int rv;
+
+	resconf = badresolvconf;
+	rv = getaddrinfo(goodname, NULL, &hints, &res);
+	ATF_REQUIRE_MSG(rv == EAI_AGAIN,
+	    "Expected %d (EAI_AGAIN), got %d (%s)",
+	    EAI_AGAIN, rv, gai_strerror(rv));
+
+	rv = getaddrinfo(goodname_dot, NULL, &hints, &res);
+	ATF_REQUIRE_MSG(rv == EAI_AGAIN,
+	    "Expected %d (EAI_AGAIN), got %d (%s)",
+	    EAI_AGAIN, rv, gai_strerror(rv));
+}
+
+ATF_TC_WITHOUT_HEAD(timeout_specific);
+ATF_TC_BODY(timeout_specific, tc)
+{
+	static const struct addrinfo hints = {
+		.ai_family = AF_INET,
+		.ai_socktype = SOCK_STREAM,
+		.ai_flags = AI_CANONNAME,
+	};
+	struct addrinfo *res;
+	int rv;
+
+	resconf = badresolvconf;
+	rv = getaddrinfo(goodname, "666", &hints, &res);
+	ATF_REQUIRE_MSG(rv == EAI_AGAIN,
+	    "Expected %d (EAI_AGAIN), got %d (%s)",
+	    EAI_AGAIN, rv, gai_strerror(rv));
+
+	rv = getaddrinfo(goodname_dot, "666", &hints, &res);
+	ATF_REQUIRE_MSG(rv == EAI_AGAIN,
+	    "Expected %d (EAI_AGAIN), got %d (%s)",
+	    EAI_AGAIN, rv, gai_strerror(rv));
+}
+
+ATF_TC_WITHOUT_HEAD(timeout2);
+ATF_TC_BODY(timeout2, tc)
+{
+	static const struct addrinfo hints = {
+		.ai_family = AF_UNSPEC,
+		.ai_flags = AI_CANONNAME,
+	};
+	struct addrinfo *res;
+	int rv;
+
+	resconf = badresolvconf2;
+	rv = getaddrinfo(goodname, NULL, &hints, &res);
+	ATF_REQUIRE_MSG(rv == EAI_AGAIN,
+	    "Expected %d (EAI_AGAIN), got %d (%s)",
+	    EAI_AGAIN, rv, gai_strerror(rv));
+
+	rv = getaddrinfo(goodname_dot, NULL, &hints, &res);
+	ATF_REQUIRE_MSG(rv == EAI_AGAIN,
+	    "Expected %d (EAI_AGAIN), got %d (%s)",
+	    EAI_AGAIN, rv, gai_strerror(rv));
+}
+
+/*
+ * Emulate interface/network down.
+ */
+ATF_TC_WITHOUT_HEAD(netdown);
+ATF_TC_BODY(netdown, tc)
+{
+	static const struct addrinfo hints = {
+		.ai_family = AF_UNSPEC,
+		.ai_flags = AI_CANONNAME,
+	};
+	struct addrinfo *res;
+	int rv;
+
+	send_error = ENETDOWN;
+	rv = getaddrinfo(goodname, NULL, &hints, &res);
+	ATF_REQUIRE_MSG(rv == EAI_AGAIN,
+	    "Expected %d (EAI_AGAIN), got %d (%s)",
+	    EAI_AGAIN, rv, gai_strerror(rv));
+
+	rv = getaddrinfo(goodname_dot, NULL, &hints, &res);
+	ATF_REQUIRE_MSG(rv == EAI_AGAIN,
+	    "Expected %d (EAI_AGAIN), got %d (%s)",
+	    EAI_AGAIN, rv, gai_strerror(rv));
+}
+
+/*
+ * See https://reviews.freebsd.org/D37139.
+ */
+ATF_TC(nofamily);
+ATF_TC_HEAD(nofamily, tc)
+{
+	atf_tc_set_md_var(tc, "require.config", "allow_network_access");
+}
+ATF_TC_BODY(nofamily, tc)
+{
+	static const struct addrinfo hints4 = {
+		.ai_family = AF_INET,
+		.ai_flags = AI_CANONNAME,
+	}, hints6 = {
+		.ai_family = AF_INET6,
+		.ai_flags = AI_CANONNAME,
+	};
+	struct addrinfo *res;
+	int rv;
+
+	rv = getaddrinfo(ipv6onlyname, NULL, &hints4, &res);
+	ATF_REQUIRE_MSG(rv == EAI_ADDRFAMILY,
+	    "Expected %d (EAI_ADDRFAMILY), got %d (%s)",
+	    EAI_ADDRFAMILY, rv, gai_strerror(rv));
+
+	rv = getaddrinfo(ipv6onlyname_dot, NULL, &hints4, &res);
+	ATF_REQUIRE_MSG(rv == EAI_ADDRFAMILY,
+	    "Expected %d (EAI_ADDRFAMILY), got %d (%s)",
+	    EAI_ADDRFAMILY, rv, gai_strerror(rv));
+
+	rv = getaddrinfo(ipv4onlyname, NULL, &hints6, &res);
+	ATF_REQUIRE_MSG(rv == EAI_ADDRFAMILY,
+	    "Expected %d (EAI_ADDRFAMILY), got %d (%s)",
+	    EAI_ADDRFAMILY, rv, gai_strerror(rv));
+
+	rv = getaddrinfo(ipv4onlyname_dot, NULL, &hints6, &res);
+	ATF_REQUIRE_MSG(rv == EAI_ADDRFAMILY,
+	    "Expected %d (EAI_ADDRFAMILY), got %d (%s)",
+	    EAI_ADDRFAMILY, rv, gai_strerror(rv));
+
+	rv = getaddrinfo(badname, NULL, &hints4, &res);
+	ATF_REQUIRE_MSG(rv == EAI_NONAME,
+	    "Expected %d (EAI_NONAME), got %d (%s)",
+	    EAI_NONAME, rv, gai_strerror(rv));
+
+	rv = getaddrinfo(badname_dot, NULL, &hints6, &res);
+	ATF_REQUIRE_MSG(rv == EAI_NONAME,
+	    "Expected %d (EAI_NONAME), got %d (%s)",
+	    EAI_NONAME, rv, gai_strerror(rv));
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+	ATF_TP_ADD_TC(tp, basic);
+	ATF_TP_ADD_TC(tp, timeout);
+	ATF_TP_ADD_TC(tp, timeout_specific);
+	ATF_TP_ADD_TC(tp, timeout2);
+	ATF_TP_ADD_TC(tp, netdown);
+	ATF_TP_ADD_TC(tp, nofamily);
+
+	return (atf_no_error());
+}