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resolv.c
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resolv.c
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//
// Copyright 2017 Garrett D'Amore <[email protected]>
// Copyright 2017 Capitar IT Group BV <[email protected]>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include "convey.h"
#include "core/nng_impl.h"
#include "stubs.h"
#include <string.h>
#ifndef _WIN32
#include <arpa/inet.h>
#endif
static const char *
ip4tostr(void *addr)
{
static char buf[256];
#ifdef _WIN32
return (InetNtop(AF_INET, addr, buf, sizeof(buf)));
#else
return (inet_ntop(AF_INET, addr, buf, sizeof(buf)));
#endif
}
static const char *
ip6tostr(void *addr)
{
static char buf[256];
#ifdef _WIN32
return (InetNtop(AF_INET6, addr, buf, sizeof(buf)));
#else
return (inet_ntop(AF_INET6, addr, buf, sizeof(buf)));
#endif
}
// These work on Darwin, and should work on illumos, but they may
// depend on the local resolver configuration. We elect not to depend
// too much on them, since localhost can be configured weirdly. Notably
// the normal assumptions on Linux do *not* hold true.
#if 0
Convey("Localhost IPv6 resolves", {
nni_aio aio;
memset(&aio, 0, sizeof (aio));
const char *str;
nni_aio_init(&aio, NULL, NULL);
nni_plat_tcp_resolv("localhost", "80", NNG_AF_INET6, 1,
&aio);
nni_aio_wait(&aio);
So(nni_aio_result(&aio) == 0);
So(aio.a_naddrs == 1);
So(aio.a_addrs[0].s_un.s_in6.sa_family == NNG_AF_INET6);
So(aio.a_addrs[0].s_un.s_in6.sa_port == ntohs(80));
str = ip6tostr(&aio.a_addrs[0].s_un.s_in6.sa_addr);
So(strcmp(str, "::1") == 0);
nni_aio_fini(&aio);
}
#endif
TestMain("Resolver", {
nni_init();
Convey("Google DNS IPv4 resolves", {
nni_aio * aio;
const char * str;
nng_sockaddr sa;
nni_aio_init(&aio, NULL, NULL);
aio->a_addr = &sa;
nni_plat_tcp_resolv("google-public-dns-a.google.com", "80",
NNG_AF_INET, 1, aio);
nni_aio_wait(aio);
So(nni_aio_result(aio) == 0);
So(sa.s_un.s_in.sa_family == NNG_AF_INET);
So(sa.s_un.s_in.sa_port == ntohs(80));
str = ip4tostr(&sa.s_un.s_in.sa_addr);
So(strcmp(str, "8.8.8.8") == 0);
nni_aio_fini(aio);
});
Convey("Numeric UDP resolves", {
nni_aio * aio;
const char * str;
nng_sockaddr sa;
nni_aio_init(&aio, NULL, NULL);
aio->a_addr = &sa;
nni_plat_udp_resolv("8.8.4.4", "69", NNG_AF_INET, 1, aio);
nni_aio_wait(aio);
So(nni_aio_result(aio) == 0);
So(sa.s_un.s_in.sa_family == NNG_AF_INET);
So(sa.s_un.s_in.sa_port == ntohs(69));
str = ip4tostr(&sa.s_un.s_in.sa_addr);
So(strcmp(str, "8.8.4.4") == 0);
nni_aio_fini(aio);
});
Convey("Numeric v4 resolves", {
nni_aio * aio;
const char * str;
nng_sockaddr sa;
nni_aio_init(&aio, NULL, NULL);
aio->a_addr = &sa;
nni_plat_tcp_resolv("8.8.4.4", "80", NNG_AF_INET, 1, aio);
nni_aio_wait(aio);
So(nni_aio_result(aio) == 0);
So(sa.s_un.s_in.sa_family == NNG_AF_INET);
So(sa.s_un.s_in.sa_port == ntohs(80));
str = ip4tostr(&sa.s_un.s_in.sa_addr);
So(strcmp(str, "8.8.4.4") == 0);
nni_aio_fini(aio);
});
Convey("Numeric v6 resolves", {
nni_aio * aio;
const char * str;
nng_sockaddr sa;
// Travis CI has moved some of their services to host that
// apparently don't support IPv6 at all. This is very sad.
// CircleCI 2.0 is in the same boat. (Amazon to blame.)
if ((getenv("TRAVIS") != NULL) ||
(getenv("CIRCLECI") != NULL)) {
ConveySkip("IPv6 missing from CI provider");
}
nni_aio_init(&aio, NULL, NULL);
aio->a_addr = &sa;
nni_plat_tcp_resolv("::1", "80", NNG_AF_INET6, 1, aio);
nni_aio_wait(aio);
So(nni_aio_result(aio) == 0);
So(sa.s_un.s_in6.sa_family == NNG_AF_INET6);
So(sa.s_un.s_in6.sa_port == ntohs(80));
str = ip6tostr(&sa.s_un.s_in6.sa_addr);
So(strcmp(str, "::1") == 0);
nni_aio_fini(aio);
});
Convey("TCP Name service resolves", {
nni_aio * aio;
const char * str;
nng_sockaddr sa;
nni_aio_init(&aio, NULL, NULL);
aio->a_addr = &sa;
nni_plat_tcp_resolv("8.8.4.4", "http", NNG_AF_INET, 1, aio);
nni_aio_wait(aio);
So(nni_aio_result(aio) == 0);
So(sa.s_un.s_in.sa_family == NNG_AF_INET);
So(sa.s_un.s_in.sa_port == ntohs(80));
str = ip4tostr(&sa.s_un.s_in.sa_addr);
So(strcmp(str, "8.8.4.4") == 0);
nni_aio_fini(aio);
});
Convey("UDP Name service resolves", {
nni_aio * aio;
const char * str;
nng_sockaddr sa;
nni_aio_init(&aio, NULL, NULL);
aio->a_addr = &sa;
nni_plat_udp_resolv("8.8.4.4", "tftp", NNG_AF_INET, 1, aio);
nni_aio_wait(aio);
So(nni_aio_result(aio) == 0);
So(sa.s_un.s_in.sa_family == NNG_AF_INET);
So(sa.s_un.s_in.sa_port == ntohs(69));
str = ip4tostr(&sa.s_un.s_in.sa_addr);
So(strcmp(str, "8.8.4.4") == 0);
nni_aio_fini(aio);
});
Convey("Localhost IPv4 resolves", {
nni_aio * aio;
const char * str;
nng_sockaddr sa;
nni_aio_init(&aio, NULL, NULL);
aio->a_addr = &sa;
nni_plat_tcp_resolv("localhost", "80", NNG_AF_INET, 1, aio);
nni_aio_wait(aio);
So(nni_aio_result(aio) == 0);
So(sa.s_un.s_in.sa_family == NNG_AF_INET);
So(sa.s_un.s_in.sa_port == ntohs(80));
So(sa.s_un.s_in.sa_addr == ntohl(0x7f000001));
str = ip4tostr(&sa.s_un.s_in.sa_addr);
So(strcmp(str, "127.0.0.1") == 0);
nni_aio_fini(aio);
});
Convey("Localhost UNSPEC resolves", {
nni_aio * aio;
const char * str;
nng_sockaddr sa;
nni_aio_init(&aio, NULL, NULL);
aio->a_addr = &sa;
nni_plat_tcp_resolv("localhost", "80", NNG_AF_UNSPEC, 1, aio);
nni_aio_wait(aio);
So(nni_aio_result(aio) == 0);
So((sa.s_un.s_family == NNG_AF_INET) ||
(sa.s_un.s_family == NNG_AF_INET6));
switch (sa.s_un.s_family) {
case NNG_AF_INET:
So(sa.s_un.s_in.sa_port == ntohs(80));
So(sa.s_un.s_in.sa_addr == ntohl(0x7f000001));
str = ip4tostr(&sa.s_un.s_in.sa_addr);
So(strcmp(str, "127.0.0.1") == 0);
break;
case NNG_AF_INET6:
So(sa.s_un.s_in6.sa_port == ntohs(80));
str = ip6tostr(&sa.s_un.s_in6.sa_addr);
So(strcmp(str, "::1") == 0);
break;
}
nni_aio_fini(aio);
});
nni_fini();
})