libvirt/tests/virnetsockettest.c

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/*
* Copyright (C) 2011, 2014 Red Hat, Inc.
*
* This library 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.
*
* This library 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 this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include <stdlib.h>
#include <signal.h>
#ifdef HAVE_IFADDRS_H
# include <ifaddrs.h>
#endif
#include <netdb.h>
#include "testutils.h"
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#include "virutil.h"
#include "virerror.h"
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#include "viralloc.h"
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#include "virlog.h"
#include "virfile.h"
#include "virstring.h"
#include "rpc/virnetsocket.h"
#define VIR_FROM_THIS VIR_FROM_RPC
VIR_LOG_INIT("tests.netsockettest");
#if HAVE_IFADDRS_H
# define BASE_PORT 5672
static int
checkProtocols(bool *hasIPv4, bool *hasIPv6,
int *freePort)
{
struct sockaddr_in in4;
struct sockaddr_in6 in6;
int s4 = -1, s6 = -1;
size_t i;
int ret = -1;
*freePort = 0;
if (virNetSocketCheckProtocols(hasIPv4, hasIPv6) < 0)
return -1;
for (i = 0; i < 50; i++) {
int only = 1;
if ((s4 = socket(AF_INET, SOCK_STREAM, 0)) < 0)
goto cleanup;
if (*hasIPv6) {
if ((s6 = socket(AF_INET6, SOCK_STREAM, 0)) < 0)
goto cleanup;
if (setsockopt(s6, IPPROTO_IPV6, IPV6_V6ONLY, &only, sizeof(only)) < 0)
goto cleanup;
}
memset(&in4, 0, sizeof(in4));
memset(&in6, 0, sizeof(in6));
in4.sin_family = AF_INET;
in4.sin_port = htons(BASE_PORT + i);
in4.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
in6.sin6_family = AF_INET6;
in6.sin6_port = htons(BASE_PORT + i);
in6.sin6_addr = in6addr_loopback;
if (bind(s4, (struct sockaddr *)&in4, sizeof(in4)) < 0) {
if (errno == EADDRINUSE) {
VIR_FORCE_CLOSE(s4);
VIR_FORCE_CLOSE(s6);
continue;
}
goto cleanup;
}
if (*hasIPv6) {
if (bind(s6, (struct sockaddr *)&in6, sizeof(in6)) < 0) {
if (errno == EADDRINUSE) {
VIR_FORCE_CLOSE(s4);
VIR_FORCE_CLOSE(s6);
continue;
}
goto cleanup;
}
}
*freePort = BASE_PORT + i;
break;
}
VIR_DEBUG("Choose port %d", *freePort);
ret = 0;
cleanup:
VIR_FORCE_CLOSE(s4);
VIR_FORCE_CLOSE(s6);
return ret;
}
struct testTCPData {
const char *lnode;
int port;
const char *cnode;
};
static int testSocketTCPAccept(const void *opaque)
{
virNetSocketPtr *lsock = NULL; /* Listen socket */
size_t nlsock = 0, i;
virNetSocketPtr ssock = NULL; /* Server socket */
virNetSocketPtr csock = NULL; /* Client socket */
const struct testTCPData *data = opaque;
int ret = -1;
char portstr[100];
snprintf(portstr, sizeof(portstr), "%d", data->port);
if (virNetSocketNewListenTCP(data->lnode, portstr,
AF_UNSPEC,
&lsock, &nlsock) < 0)
goto cleanup;
for (i = 0; i < nlsock; i++) {
if (virNetSocketListen(lsock[i], 0) < 0)
goto cleanup;
}
if (virNetSocketNewConnectTCP(data->cnode, portstr,
AF_UNSPEC,
&csock) < 0)
goto cleanup;
virObjectUnref(csock);
for (i = 0; i < nlsock; i++) {
if (virNetSocketAccept(lsock[i], &ssock) != -1 && ssock) {
char c = 'a';
if (virNetSocketWrite(ssock, &c, 1) != -1 &&
virNetSocketRead(ssock, &c, 1) != -1) {
VIR_DEBUG("Unexpected client socket present");
goto cleanup;
}
}
virObjectUnref(ssock);
ssock = NULL;
}
ret = 0;
cleanup:
virObjectUnref(ssock);
for (i = 0; i < nlsock; i++)
virObjectUnref(lsock[i]);
VIR_FREE(lsock);
return ret;
}
#endif
#ifndef WIN32
static int testSocketUNIXAccept(const void *data ATTRIBUTE_UNUSED)
{
virNetSocketPtr lsock = NULL; /* Listen socket */
virNetSocketPtr ssock = NULL; /* Server socket */
virNetSocketPtr csock = NULL; /* Client socket */
int ret = -1;
char *path = NULL;
char *tmpdir;
char template[] = "/tmp/libvirt_XXXXXX";
tmpdir = mkdtemp(template);
if (tmpdir == NULL) {
VIR_WARN("Failed to create temporary directory");
goto cleanup;
}
if (virAsprintf(&path, "%s/test.sock", tmpdir) < 0)
goto cleanup;
if (virNetSocketNewListenUNIX(path, 0700, -1, getegid(), &lsock) < 0)
goto cleanup;
if (virNetSocketListen(lsock, 0) < 0)
goto cleanup;
if (virNetSocketNewConnectUNIX(path, false, NULL, &csock) < 0)
goto cleanup;
virObjectUnref(csock);
if (virNetSocketAccept(lsock, &ssock) != -1) {
char c = 'a';
if (virNetSocketWrite(ssock, &c, 1) != -1) {
VIR_DEBUG("Unexpected client socket present");
goto cleanup;
}
}
ret = 0;
cleanup:
VIR_FREE(path);
virObjectUnref(lsock);
virObjectUnref(ssock);
if (tmpdir)
rmdir(tmpdir);
return ret;
}
static int testSocketUNIXAddrs(const void *data ATTRIBUTE_UNUSED)
{
virNetSocketPtr lsock = NULL; /* Listen socket */
virNetSocketPtr ssock = NULL; /* Server socket */
virNetSocketPtr csock = NULL; /* Client socket */
int ret = -1;
char *path = NULL;
char *tmpdir;
char template[] = "/tmp/libvirt_XXXXXX";
tmpdir = mkdtemp(template);
if (tmpdir == NULL) {
VIR_WARN("Failed to create temporary directory");
goto cleanup;
}
if (virAsprintf(&path, "%s/test.sock", tmpdir) < 0)
goto cleanup;
if (virNetSocketNewListenUNIX(path, 0700, -1, getegid(), &lsock) < 0)
goto cleanup;
if (STRNEQ(virNetSocketLocalAddrString(lsock), "127.0.0.1;0")) {
VIR_DEBUG("Unexpected local address");
goto cleanup;
}
if (virNetSocketRemoteAddrString(lsock) != NULL) {
VIR_DEBUG("Unexpected remote address");
goto cleanup;
}
if (virNetSocketListen(lsock, 0) < 0)
goto cleanup;
if (virNetSocketNewConnectUNIX(path, false, NULL, &csock) < 0)
goto cleanup;
if (STRNEQ(virNetSocketLocalAddrString(csock), "127.0.0.1;0")) {
VIR_DEBUG("Unexpected local address");
goto cleanup;
}
if (STRNEQ(virNetSocketRemoteAddrString(csock), "127.0.0.1;0")) {
VIR_DEBUG("Unexpected local address");
goto cleanup;
}
if (virNetSocketAccept(lsock, &ssock) < 0) {
VIR_DEBUG("Unexpected client socket missing");
goto cleanup;
}
if (STRNEQ(virNetSocketLocalAddrString(ssock), "127.0.0.1;0")) {
VIR_DEBUG("Unexpected local address");
goto cleanup;
}
if (STRNEQ(virNetSocketRemoteAddrString(ssock), "127.0.0.1;0")) {
VIR_DEBUG("Unexpected local address");
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(path);
virObjectUnref(lsock);
virObjectUnref(ssock);
virObjectUnref(csock);
if (tmpdir)
rmdir(tmpdir);
return ret;
}
static int testSocketCommandNormal(const void *data ATTRIBUTE_UNUSED)
{
virNetSocketPtr csock = NULL; /* Client socket */
char buf[100];
size_t i;
int ret = -1;
virCommandPtr cmd = virCommandNewArgList("/bin/cat", "/dev/zero", NULL);
virCommandAddEnvPassCommon(cmd);
if (virNetSocketNewConnectCommand(cmd, &csock) < 0)
goto cleanup;
virNetSocketSetBlocking(csock, true);
if (virNetSocketRead(csock, buf, sizeof(buf)) < 0)
goto cleanup;
for (i = 0; i < sizeof(buf); i++)
if (buf[i] != '\0')
goto cleanup;
ret = 0;
cleanup:
virObjectUnref(csock);
return ret;
}
static int testSocketCommandFail(const void *data ATTRIBUTE_UNUSED)
{
virNetSocketPtr csock = NULL; /* Client socket */
char buf[100];
int ret = -1;
virCommandPtr cmd = virCommandNewArgList("/bin/cat", "/dev/does-not-exist", NULL);
virCommandAddEnvPassCommon(cmd);
if (virNetSocketNewConnectCommand(cmd, &csock) < 0)
goto cleanup;
virNetSocketSetBlocking(csock, true);
if (virNetSocketRead(csock, buf, sizeof(buf)) == 0)
goto cleanup;
ret = 0;
cleanup:
virObjectUnref(csock);
return ret;
}
struct testSSHData {
const char *nodename;
const char *service;
const char *binary;
const char *username;
bool noTTY;
bool noVerify;
const char *netcat;
const char *keyfile;
const char *path;
const char *expectOut;
bool failConnect;
bool dieEarly;
};
static int testSocketSSH(const void *opaque)
{
const struct testSSHData *data = opaque;
virNetSocketPtr csock = NULL; /* Client socket */
int ret = -1;
char buf[1024];
if (virNetSocketNewConnectSSH(data->nodename,
data->service,
data->binary,
data->username,
data->noTTY,
data->noVerify,
data->netcat,
data->keyfile,
data->path,
&csock) < 0)
goto cleanup;
virNetSocketSetBlocking(csock, true);
if (data->failConnect) {
if (virNetSocketRead(csock, buf, sizeof(buf)-1) >= 0) {
VIR_DEBUG("Expected connect failure, but got some socket data");
goto cleanup;
}
} else {
ssize_t rv;
if ((rv = virNetSocketRead(csock, buf, sizeof(buf)-1)) < 0) {
VIR_DEBUG("Didn't get any socket data");
goto cleanup;
}
buf[rv] = '\0';
if (STRNEQ(buf, data->expectOut)) {
virtTestDifference(stderr, data->expectOut, buf);
goto cleanup;
}
if (data->dieEarly &&
virNetSocketRead(csock, buf, sizeof(buf)-1) >= 0) {
VIR_DEBUG("Got too much socket data");
goto cleanup;
}
}
ret = 0;
cleanup:
virObjectUnref(csock);
return ret;
}
#endif
static int
mymain(void)
{
int ret = 0;
#ifdef HAVE_IFADDRS_H
bool hasIPv4, hasIPv6;
int freePort;
#endif
signal(SIGPIPE, SIG_IGN);
#ifdef HAVE_IFADDRS_H
if (checkProtocols(&hasIPv4, &hasIPv6, &freePort) < 0) {
fprintf(stderr, "Cannot identify IPv4/6 availability\n");
return EXIT_FAILURE;
}
if (hasIPv4) {
struct testTCPData tcpData = { "127.0.0.1", freePort, "127.0.0.1" };
if (virtTestRun("Socket TCP/IPv4 Accept", testSocketTCPAccept, &tcpData) < 0)
ret = -1;
}
if (hasIPv6) {
struct testTCPData tcpData = { "::1", freePort, "::1" };
if (virtTestRun("Socket TCP/IPv6 Accept", testSocketTCPAccept, &tcpData) < 0)
ret = -1;
}
if (hasIPv6 && hasIPv4) {
struct testTCPData tcpData = { NULL, freePort, "127.0.0.1" };
if (virtTestRun("Socket TCP/IPv4+IPv6 Accept", testSocketTCPAccept, &tcpData) < 0)
ret = -1;
tcpData.cnode = "::1";
if (virtTestRun("Socket TCP/IPv4+IPv6 Accept", testSocketTCPAccept, &tcpData) < 0)
ret = -1;
}
#endif
#ifndef WIN32
if (virtTestRun("Socket UNIX Accept", testSocketUNIXAccept, NULL) < 0)
ret = -1;
if (virtTestRun("Socket UNIX Addrs", testSocketUNIXAddrs, NULL) < 0)
ret = -1;
if (virtTestRun("Socket External Command /dev/zero", testSocketCommandNormal, NULL) < 0)
ret = -1;
if (virtTestRun("Socket External Command /dev/does-not-exist", testSocketCommandFail, NULL) < 0)
ret = -1;
struct testSSHData sshData1 = {
.nodename = "somehost",
.path = "/tmp/socket",
.expectOut = "somehost sh -c 'if 'nc' -q 2>&1 | grep \"requires an argument\" >/dev/null 2>&1; then "
"ARG=-q0;"
"else "
"ARG=;"
"fi;"
"'nc' $ARG -U /tmp/socket'\n",
};
if (virtTestRun("SSH test 1", testSocketSSH, &sshData1) < 0)
ret = -1;
struct testSSHData sshData2 = {
.nodename = "somehost",
.service = "9000",
.username = "fred",
.netcat = "netcat",
.noTTY = true,
.noVerify = false,
.path = "/tmp/socket",
.expectOut = "-p 9000 -l fred -T -o BatchMode=yes -e none somehost sh -c '"
"if 'netcat' -q 2>&1 | grep \"requires an argument\" >/dev/null 2>&1; then "
"ARG=-q0;"
"else "
"ARG=;"
"fi;"
"'netcat' $ARG -U /tmp/socket'\n",
};
if (virtTestRun("SSH test 2", testSocketSSH, &sshData2) < 0)
ret = -1;
struct testSSHData sshData3 = {
.nodename = "somehost",
.service = "9000",
.username = "fred",
.netcat = "netcat",
.noTTY = false,
.noVerify = true,
.path = "/tmp/socket",
.expectOut = "-p 9000 -l fred -o StrictHostKeyChecking=no somehost sh -c '"
"if 'netcat' -q 2>&1 | grep \"requires an argument\" >/dev/null 2>&1; then "
"ARG=-q0;"
"else "
"ARG=;"
"fi;"
"'netcat' $ARG -U /tmp/socket'\n",
};
if (virtTestRun("SSH test 3", testSocketSSH, &sshData3) < 0)
ret = -1;
struct testSSHData sshData4 = {
.nodename = "nosuchhost",
.path = "/tmp/socket",
.failConnect = true,
};
if (virtTestRun("SSH test 4", testSocketSSH, &sshData4) < 0)
ret = -1;
struct testSSHData sshData5 = {
.nodename = "crashyhost",
.path = "/tmp/socket",
.expectOut = "crashyhost sh -c "
"'if 'nc' -q 2>&1 | grep \"requires an argument\" >/dev/null 2>&1; then "
"ARG=-q0;"
"else "
"ARG=;"
"fi;"
"'nc' $ARG -U /tmp/socket'\n",
.dieEarly = true,
};
if (virtTestRun("SSH test 5", testSocketSSH, &sshData5) < 0)
ret = -1;
struct testSSHData sshData6 = {
.nodename = "example.com",
.path = "/tmp/socket",
.keyfile = "/root/.ssh/example_key",
.noVerify = true,
.expectOut = "-i /root/.ssh/example_key -o StrictHostKeyChecking=no example.com sh -c '"
"if 'nc' -q 2>&1 | grep \"requires an argument\" >/dev/null 2>&1; then "
"ARG=-q0;"
"else "
"ARG=;"
"fi;"
"'nc' $ARG -U /tmp/socket'\n",
};
if (virtTestRun("SSH test 6", testSocketSSH, &sshData6) < 0)
ret = -1;
struct testSSHData sshData7 = {
.nodename = "somehost",
.netcat = "nc -4",
.path = "/tmp/socket",
.expectOut = "somehost sh -c 'if ''nc -4'' -q 2>&1 | grep \"requires an argument\" >/dev/null 2>&1; then "
"ARG=-q0;"
"else "
"ARG=;"
"fi;"
"''nc -4'' $ARG -U /tmp/socket'\n",
};
if (virtTestRun("SSH test 7", testSocketSSH, &sshData7) < 0)
ret = -1;
#endif
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIRT_TEST_MAIN(mymain)