1 files changed, 328 insertions, 0 deletions
diff --git a/usr.bin/getaddrinfo/getaddrinfo.c b/usr.bin/getaddrinfo/getaddrinfo.c
new file mode 100644
index 000000000000..da84259a3c2e
--- /dev/null
+++ b/usr.bin/getaddrinfo/getaddrinfo.c
@@ -0,0 +1,328 @@
+/*	$NetBSD: getaddrinfo.c,v 1.4 2014/04/22 02:23:03 ginsbach Exp $	*/
+
+/*-
+ * Copyright (c) 2013 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Taylor R. Campbell.
+ *
+ * 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/types.h>
+#include <sys/socket.h>
+
+#include <assert.h>
+#include <err.h>
+#include <errno.h>
+#include <limits.h>
+#include <netdb.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <util.h>
+
+#include "tables.h"
+
+static void	usage(void) __dead;
+static void	printaddrinfo(struct addrinfo *);
+static bool	parse_af(const char *, int *);
+static bool	parse_protocol(const char *, int *);
+static bool	parse_socktype(const char *, int *);
+static bool	parse_numeric_tabular(const char *, int *, const char *const *,
+		    size_t);
+
+int
+main(int argc, char **argv)
+{
+	static const struct addrinfo zero_addrinfo;
+	struct addrinfo hints = zero_addrinfo;
+	struct addrinfo *addrinfo;
+	const char *hostname = NULL, *service = NULL;
+	int ch;
+	int error;
+
+	setprogname(argv[0]);
+
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_socktype = 0;
+	hints.ai_protocol = 0;
+	hints.ai_flags = 0;
+
+	while ((ch = getopt(argc, argv, "cf:nNp:Ps:t:")) != -1) {
+		switch (ch) {
+		case 'c':
+			hints.ai_flags |= AI_CANONNAME;
+			break;
+
+		case 'f':
+			if (!parse_af(optarg, &hints.ai_family)) {
+				warnx("invalid address family: %s", optarg);
+				usage();
+			}
+			break;
+
+		case 'n':
+			hints.ai_flags |= AI_NUMERICHOST;
+			break;
+
+		case 'N':
+			hints.ai_flags |= AI_NUMERICSERV;
+			break;
+
+		case 's':
+			service = optarg;
+			break;
+
+		case 'p':
+			if (!parse_protocol(optarg, &hints.ai_protocol)) {
+				warnx("invalid protocol: %s", optarg);
+				usage();
+			}
+			break;
+
+		case 'P':
+			hints.ai_flags |= AI_PASSIVE;
+			break;
+
+		case 't':
+			if (!parse_socktype(optarg, &hints.ai_socktype)) {
+				warnx("invalid socket type: %s", optarg);
+				usage();
+			}
+			break;
+
+		case '?':
+		default:
+			usage();
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (!((argc == 1) || ((argc == 0) && (hints.ai_flags & AI_PASSIVE))))
+		usage();
+	if (argc == 1)
+		hostname = argv[0];
+
+	if (service != NULL) {
+		char *p;
+
+		if ((p = strchr(service, '/')) != NULL) {
+			if (hints.ai_protocol != 0) {
+				warnx("protocol already specified");
+				usage();
+			}
+			*p = '\0';
+			p++;
+
+			if (!parse_protocol(p, &hints.ai_protocol)) {
+				warnx("invalid protocol: %s", p);
+				usage();
+			}
+		}
+	}
+
+	error = getaddrinfo(hostname, service, &hints, &addrinfo);
+	if (error)
+		errx(1, "%s", gai_strerror(error));
+
+	if ((hints.ai_flags & AI_CANONNAME) && (addrinfo != NULL)) {
+		if (printf("canonname %s\n", addrinfo->ai_canonname) < 0)
+			err(1, "printf");
+	}
+
+	printaddrinfo(addrinfo);
+
+	freeaddrinfo(addrinfo);
+
+	return 0;
+}
+
+static void __dead
+usage(void)
+{
+
+	(void)fprintf(stderr, "Usage: %s", getprogname());
+	(void)fprintf(stderr,
+	    " [-f <family>] [-p <protocol>] [-t <socktype>] [-s <service>]\n");
+	(void)fprintf(stderr, "   [-cnNP] [<hostname>]\n");
+	exit(1);
+}
+
+static bool
+parse_af(const char *string, int *afp)
+{
+
+	return parse_numeric_tabular(string, afp, address_families,
+	    __arraycount(address_families));
+}
+
+static bool
+parse_protocol(const char *string, int *protop)
+{
+	struct protoent *protoent;
+	char *end;
+	long value;
+
+	errno = 0;
+	value = strtol(string, &end, 0);
+	if ((string[0] == '\0') || (*end != '\0'))
+		goto numeric_failed;
+	if ((errno == ERANGE) && ((value == LONG_MAX) || (value == LONG_MIN)))
+		goto numeric_failed;
+	if ((value > INT_MAX) || (value < INT_MIN))
+		goto numeric_failed;
+
+	*protop = value;
+	return true;
+
+numeric_failed:
+	protoent = getprotobyname(string);
+	if (protoent == NULL)
+		goto protoent_failed;
+
+	*protop = protoent->p_proto;
+	return true;
+
+protoent_failed:
+	return false;
+}
+
+static bool
+parse_socktype(const char *string, int *typep)
+{
+
+	return parse_numeric_tabular(string, typep, socket_types,
+	    __arraycount(socket_types));
+}
+
+static bool
+parse_numeric_tabular(const char *string, int *valuep,
+    const char *const *table, size_t n)
+{
+	char *end;
+	long value;
+	size_t i;
+
+	assert((uintmax_t)n <= (uintmax_t)INT_MAX);
+
+	errno = 0;
+	value = strtol(string, &end, 0);
+	if ((string[0] == '\0') || (*end != '\0'))
+		goto numeric_failed;
+	if ((errno == ERANGE) && ((value == LONG_MAX) || (value == LONG_MIN)))
+		goto numeric_failed;
+	if ((value > INT_MAX) || (value < INT_MIN))
+		goto numeric_failed;
+
+	*valuep = value;
+	return true;
+
+numeric_failed:
+	for (i = 0; i < n; i++)
+		if ((table[i] != NULL) && (strcmp(string, table[i]) == 0))
+			break;
+	if (i == n)
+		goto table_failed;
+	*valuep = i;
+	return true;
+
+table_failed:
+	return false;
+}
+
+static void
+printaddrinfo(struct addrinfo *addrinfo)
+{
+	struct addrinfo *ai;
+	char buf[1024];
+	int n;
+	struct protoent *protoent;
+
+	for (ai = addrinfo; ai != NULL; ai = ai->ai_next) {
+		/* Print the socket type.  */
+		if ((ai->ai_socktype >= 0) &&
+		    ((size_t)ai->ai_socktype < __arraycount(socket_types)) &&
+		    (socket_types[ai->ai_socktype] != NULL))
+			n = printf("%s", socket_types[ai->ai_socktype]);
+		else
+			n = printf("%d", ai->ai_socktype);
+		if (n < 0)
+			err(1, "printf");
+
+		/* Print the address family.  */
+		if ((ai->ai_family >= 0) &&
+		    ((size_t)ai->ai_family < __arraycount(address_families)) &&
+		    (address_families[ai->ai_family] != NULL))
+			n = printf(" %s", address_families[ai->ai_family]);
+		else
+			n = printf(" %d", ai->ai_family);
+		if (n < 0)
+			err(1, "printf");
+
+		/* Print the protocol number.  */
+		protoent = getprotobynumber(ai->ai_protocol);
+		if (protoent == NULL)
+			n = printf(" %d", ai->ai_protocol);
+		else
+			n = printf(" %s", protoent->p_name);
+		if (n < 0)
+			err(1, "printf");
+
+		/* Format the sockaddr.  */
+		switch (ai->ai_family) {
+		case AF_INET:
+		case AF_INET6:
+			n = sockaddr_snprintf(buf, sizeof(buf), " %a %p",
+			    ai->ai_addr);
+			break;
+
+		default:
+			n = sockaddr_snprintf(buf, sizeof(buf),
+			    "%a %p %I %F %R %S", ai->ai_addr);
+		}
+
+		/*
+		 * Check for sockaddr_snprintf failure.
+		 *
+		 * XXX sockaddr_snprintf's error reporting is botched
+		 * -- man page says it sets errno, but if getnameinfo
+		 * fails, errno is not where it reports the error...
+		 */
+		if (n < 0) {
+			warnx("sockaddr_snprintf failed");
+			continue;
+		}
+		if (sizeof(buf) <= (size_t)n)
+			warnx("truncated sockaddr_snprintf output");
+
+		/* Print the formatted sockaddr.  */
+		if (printf("%s\n", buf) < 0)
+			err(1, "printf");
+	}
+}