diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:37:14 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:37:14 +0000 |
commit | ea648e70a989cca190cd7403fe892fd2dcc290b4 (patch) | |
tree | e2b6b1c647da68b0d4d66082835e256eb30970e8 /lib/samples/sample-gai.c | |
parent | Initial commit. (diff) | |
download | bind9-ea648e70a989cca190cd7403fe892fd2dcc290b4.tar.xz bind9-ea648e70a989cca190cd7403fe892fd2dcc290b4.zip |
Adding upstream version 1:9.11.5.P4+dfsg.upstream/1%9.11.5.P4+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/samples/sample-gai.c')
-rw-r--r-- | lib/samples/sample-gai.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/lib/samples/sample-gai.c b/lib/samples/sample-gai.c new file mode 100644 index 0000000..8b56ab9 --- /dev/null +++ b/lib/samples/sample-gai.c @@ -0,0 +1,73 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + + +#include <config.h> + +#include <isc/net.h> +#include <isc/print.h> + +#include <irs/netdb.h> + +#include <stdlib.h> +#include <string.h> +#include <stdio.h> + +static void +do_gai(int family, char *hostname) { + struct addrinfo hints, *res, *res0; + int error; + char namebuf[1024], addrbuf[1024], servbuf[1024]; + + memset(&hints, 0, sizeof(hints)); + hints.ai_family = family; + hints.ai_socktype = SOCK_STREAM; + hints.ai_flags = AI_CANONNAME; + error = getaddrinfo(hostname, "http", &hints, &res0); + if (error) { + fprintf(stderr, "getaddrinfo failed for %s,family=%d: %s\n", + hostname, family, gai_strerror(error)); + return; + } + + for (res = res0; res; res = res->ai_next) { + error = getnameinfo(res->ai_addr, + (socklen_t)res->ai_addrlen, + addrbuf, sizeof(addrbuf), + NULL, 0, NI_NUMERICHOST); + if (error == 0) + error = getnameinfo(res->ai_addr, + (socklen_t)res->ai_addrlen, + namebuf, sizeof(namebuf), + servbuf, sizeof(servbuf), 0); + if (error != 0) { + fprintf(stderr, "getnameinfo failed: %s\n", + gai_strerror(error)); + } else { + printf("%s(%s/%s)=%s:%s\n", hostname, + res->ai_canonname, addrbuf, namebuf, servbuf); + } + } + + freeaddrinfo(res0); +} + +int +main(int argc, char *argv[]) { + if (argc < 2) + exit(1); + + do_gai(AF_INET, argv[1]); + do_gai(AF_INET6, argv[1]); + do_gai(AF_UNSPEC, argv[1]); + + return (0); +} |