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/*
* Test suite for address binding in the server.
*
* Written by Russ Allbery <eagle@eyrie.org>
* Copyright 2018 Russ Allbery <eagle@eyrie.org>
* Copyright 2011-2012, 2014
* The Board of Trustees of the Leland Stanford Junior University
*
* SPDX-License-Identifier: MIT
*/
#include <config.h>
#include <portable/system.h>
#include <client/remctl.h>
#include <tests/tap/basic.h>
#include <tests/tap/kerberos.h>
#include <tests/tap/process.h>
#include <tests/tap/remctl.h>
#include <util/network.h>
/*
* Test whether IPv6 is available.
*/
static bool
have_ipv6(void)
{
socket_type fd;
fd = network_bind_ipv6(SOCK_STREAM, "::1", 14373);
if (fd == INVALID_SOCKET) {
if (errno == EAFNOSUPPORT || errno == EPROTONOSUPPORT
|| errno == EADDRNOTAVAIL)
return false;
return true;
}
close(fd);
return true;
}
/*
* Test whether we have any IPv6 addresses. This is used to decide
* whether to expect the server to bind IPv6 addresses by default.
*/
static bool
have_ipv6_addr(void)
{
struct addrinfo hints, *addrs, *addr;
int error;
char service[16];
bool result = false;
/* Do the query to find all the available addresses. */
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_PASSIVE | AI_ADDRCONFIG;
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
snprintf(service, sizeof(service), "%d", 14373);
error = getaddrinfo(NULL, service, &hints, &addrs);
if (error < 0)
return false;
for (addr = addrs; addr != NULL; addr = addr->ai_next) {
if (addr->ai_family == AF_INET6)
result = true;
}
freeaddrinfo(addrs);
return result;
}
/*
* Run the remote test command and confirm the output is correct. Takes the
* string to expect the REMOTE_ADDR environment variable to be set to.
*/
static void
test_command(struct remctl *r, const char *addr)
{
struct remctl_output *output;
char *seen;
const char *command[] = {"test", "env", "REMOTE_ADDR", NULL};
if (!remctl_command(r, command)) {
diag("remctl error %s", remctl_error(r));
ok_block(0, 3, "... command failed");
return;
}
do {
output = remctl_output(r);
switch (output->type) {
case REMCTL_OUT_OUTPUT:
is_int(strlen(addr) + 1, output->length, "... length ok");
seen = bstrndup(output->data, output->length - 1);
is_string(addr, seen, "... REMOTE_ADDR correct");
free(seen);
break;
case REMCTL_OUT_STATUS:
is_int(0, output->status, "... status ok");
break;
case REMCTL_OUT_ERROR:
diag("test env returned error: %.*s", (int) output->length,
output->data);
ok_block(0, 3, "... error received");
break;
case REMCTL_OUT_DONE:
diag("unexpected done token");
break;
}
} while (output->type == REMCTL_OUT_OUTPUT);
}
int
main(void)
{
struct kerberos_config *config;
struct remctl *r;
struct process *remctld;
#ifdef HAVE_INET6
bool ipv6 = have_ipv6();
#endif
/* Unless we have Kerberos available, we can't really do anything. */
config = kerberos_setup(TAP_KRB_NEEDS_KEYTAB);
/* Initialize our testing. */
plan(26);
/* Test connecting to IPv4 and IPv6 with default bind. */
remctld = remctld_start(config, "data/conf-simple", NULL);
r = remctl_new();
ok(remctl_open(r, "127.0.0.1", 14373, config->principal),
"Connect to 127.0.0.1");
test_command(r, "127.0.0.1");
remctl_close(r);
#ifdef HAVE_INET6
if (ipv6 && have_ipv6_addr()) {
r = remctl_new();
ok(remctl_open(r, "::1", 14373, config->principal), "Connect to ::1");
test_command(r, "::1");
remctl_close(r);
} else {
skip_block(4, "IPv6 not supported");
}
#else
skip_block(4, "IPv6 not supported");
#endif
process_stop(remctld);
/* Try binding to only IPv4. */
remctld =
remctld_start(config, "data/conf-simple", "-b", "127.0.0.1", NULL);
r = remctl_new();
ok(remctl_open(r, "127.0.0.1", 14373, config->principal),
"Connect to 127.0.0.1 when bound to that address");
test_command(r, "127.0.0.1");
remctl_close(r);
#ifdef HAVE_INET6
if (ipv6) {
r = remctl_new();
ok(!remctl_open(r, "::1", 14373, config->principal),
"Cannot connect to ::1 when only bound to 127.0.0.1");
remctl_close(r);
} else {
skip("IPv6 not supported");
}
#else
skip("IPv6 not supported");
#endif
process_stop(remctld);
/* Try binding to only IPv6. */
#ifdef HAVE_INET6
if (ipv6) {
remctld = remctld_start(config, "data/conf-simple", "-b", "::1", NULL);
r = remctl_new();
ok(!remctl_open(r, "127.0.0.1", 14373, config->principal),
"Cannot connect to 127.0.0.1 when only bound to ::1");
remctl_close(r);
r = remctl_new();
ok(remctl_open(r, "::1", 14373, config->principal),
"Connect to ::1 when bound only to it");
test_command(r, "::1");
remctl_close(r);
process_stop(remctld);
} else {
skip_block(5, "IPv6 not supported");
}
#else
skip_block(5, "IPv6 not supported");
#endif
/* Try binding explicitly to local IPv4 and IPv6 addresses. */
#ifdef HAVE_INET6
if (ipv6) {
remctld = remctld_start(config, "data/conf-simple", "-b", "127.0.0.1",
"-b", "::1", NULL);
r = remctl_new();
ok(remctl_open(r, "127.0.0.1", 14373, config->principal),
"Connect to 127.0.0.1 when bound to both local addresses");
test_command(r, "127.0.0.1");
remctl_close(r);
r = remctl_new();
ok(remctl_open(r, "::1", 14373, config->principal),
"Connect to ::1 when bound to both local addresses");
test_command(r, "::1");
remctl_close(r);
process_stop(remctld);
} else {
skip_block(8, "IPv6 not supported");
}
#else
skip_block(8, "IPv6 not supported");
#endif
return 0;
}
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