+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2005-2008 Lennart Poettering
- Copyright 2014 Daniel Buch
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <string.h>
-#include <sys/socket.h>
-#include <arpa/inet.h>
-#include <stdio.h>
-#include <netinet/in.h>
-#include <resolv.h>
-#include <errno.h>
-
-#include "socket-util.h"
-#include "sd-resolve.h"
-#include "resolve-util.h"
-#include "macro.h"
-
-static int getaddrinfo_handler(sd_resolve_query *q, int ret, const struct addrinfo *ai, void *userdata) {
- const struct addrinfo *i;
-
- assert_se(q);
-
- if (ret != 0) {
- log_error("getaddrinfo error: %s %i", gai_strerror(ret), ret);
- return 0;
- }
-
- for (i = ai; i; i = i->ai_next) {
- _cleanup_free_ char *addr = NULL;
-
- assert_se(sockaddr_pretty(i->ai_addr, i->ai_addrlen, false, true, &addr) == 0);
- puts(addr);
- }
-
- printf("canonical name: %s\n", strna(ai->ai_canonname));
-
- return 0;
-}
-
-static int getnameinfo_handler(sd_resolve_query *q, int ret, const char *host, const char *serv, void *userdata) {
- assert_se(q);
-
- if (ret != 0) {
- log_error("getnameinfo error: %s %i", gai_strerror(ret), ret);
- return 0;
- }
-
- printf("Host: %s -- Serv: %s\n", strna(host), strna(serv));
- return 0;
-}
-
-static int res_handler(sd_resolve_query *q, int ret, unsigned char *answer, void *userdata) {
- int qdcount, ancount, len;
- const unsigned char *pos = answer + sizeof(HEADER);
- unsigned char *end = answer + ret;
- HEADER *head = (HEADER *) answer;
- char name[256];
- assert_se(q);
-
- if (ret < 0) {
- log_error("res_query() error: %s %i", strerror(errno), errno);
- return 0;
- }
-
- if (ret == 0) {
- log_error("No reply for SRV lookup");
- return 0;
- }
-
- qdcount = ntohs(head->qdcount);
- ancount = ntohs(head->ancount);
-
- printf("%d answers for srv lookup:\n", ancount);
-
- /* Ignore the questions */
- while (qdcount-- > 0 && (len = dn_expand(answer, end, pos, name, 255)) >= 0) {
- assert_se(len >= 0);
- pos += len + QFIXEDSZ;
- }
-
- /* Parse the answers */
- while (ancount-- > 0 && (len = dn_expand(answer, end, pos, name, 255)) >= 0) {
- /* Ignore the initial string */
- uint16_t pref, weight, port;
- assert_se(len >= 0);
- pos += len;
- /* Ignore type, ttl, class and dlen */
- pos += 10;
-
- GETSHORT(pref, pos);
- GETSHORT(weight, pos);
- GETSHORT(port, pos);
- len = dn_expand(answer, end, pos, name, 255);
- printf("\tpreference: %2d weight: %2d port: %d host: %s\n",
- pref, weight, port, name);
-
- pos += len;
- }
-
- return 0;
-}
-
-int main(int argc, char *argv[]) {
- _cleanup_resolve_query_unref_ sd_resolve_query *q1 = NULL, *q2 = NULL, *q3 = NULL;
- _cleanup_resolve_unref_ sd_resolve *resolve = NULL;
- int r = 0;
-
- struct addrinfo hints = {
- .ai_family = PF_UNSPEC,
- .ai_socktype = SOCK_STREAM,
- .ai_flags = AI_CANONNAME
- };
-
- struct sockaddr_in sa = {
- .sin_family = AF_INET,
- .sin_port = htons(80)
- };
-
- assert_se(sd_resolve_default(&resolve) >= 0);
-
- /* Test a floating resolver query */
- sd_resolve_getaddrinfo(resolve, NULL, "redhat.com", "http", NULL, getaddrinfo_handler, NULL);
-
- /* Make a name -> address query */
- r = sd_resolve_getaddrinfo(resolve, &q1, argc >= 2 ? argv[1] : "www.heise.de", NULL, &hints, getaddrinfo_handler, NULL);
- if (r < 0)
- log_error_errno(r, "sd_resolve_getaddrinfo(): %m");
-
- /* Make an address -> name query */
- sa.sin_addr.s_addr = inet_addr(argc >= 3 ? argv[2] : "193.99.144.71");
- r = sd_resolve_getnameinfo(resolve, &q2, (struct sockaddr*) &sa, sizeof(sa), 0, SD_RESOLVE_GET_BOTH, getnameinfo_handler, NULL);
- if (r < 0)
- log_error_errno(r, "sd_resolve_getnameinfo(): %m");
-
- /* Make a res_query() call */
- r = sd_resolve_res_query(resolve, &q3, "_xmpp-client._tcp.gmail.com", C_IN, T_SRV, res_handler, NULL);
- if (r < 0)
- log_error_errno(r, "sd_resolve_res_query(): %m");
-
- /* Wait until the three queries are completed */
- while (sd_resolve_query_is_done(q1) == 0 ||
- sd_resolve_query_is_done(q2) == 0 ||
- sd_resolve_query_is_done(q3) == 0) {
-
- r = sd_resolve_wait(resolve, (uint64_t) -1);
- if (r < 0) {
- log_error_errno(r, "sd_resolve_wait(): %m");
- assert_not_reached("sd_resolve_wait() failed");
- }
- }
-
- return 0;
-}