X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flibelogind%2Fsd-resolve%2Ftest-resolve.c;fp=src%2Flibelogind%2Fsd-resolve%2Ftest-resolve.c;h=354a4071b7efe4fa3fe1e9a3431ef026daae0354;hb=f48dd74a8d39b6074f820f904953f5cece03b9b0;hp=0000000000000000000000000000000000000000;hpb=796f9ac2ba3731fec49fd684b1adc02cfbe6f11b;p=elogind.git

diff --git a/src/libelogind/sd-resolve/test-resolve.c b/src/libelogind/sd-resolve/test-resolve.c
new file mode 100644
index 000000000..354a4071b
--- /dev/null
+++ b/src/libelogind/sd-resolve/test-resolve.c
@@ -0,0 +1,171 @@
+/*-*- 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;
+}