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libvirt/tests/nwfilterxml2firewalltest.c
Andrea Bolognani 3e7db8d3e8 Remove backslash alignment attempts 
Right-aligning backslashes when defining macros or using complex
commands in Makefiles looks cute, but as soon as any changes is
required to the code you end up with either distractingly broken
alignment or unnecessarily big diffs where most of the changes
are just pushing all backslashes a few characters to one side.

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    grep -E '*\.([chx]|am|mk)$$' | \
    while read f; do \
      sed -Ei 's/[[:blank:]]*[[:blank:]]\\$/ \\/g' "$f"; \
    done

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
2017-11-03 13:24:12 +01:00

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/*
* nwfilterxml2firewalltest.c: Test iptables rule generation
*
* Copyright (C) 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/>.
*
*/
#include <config.h>
#if defined (__linux__)
# include "testutils.h"
# include "nwfilter/nwfilter_ebiptables_driver.h"
# include "virbuffer.h"
# define __VIR_FIREWALL_PRIV_H_ALLOW__
# include "virfirewallpriv.h"
# define __VIR_COMMAND_PRIV_H_ALLOW__
# include "vircommandpriv.h"
# define VIR_FROM_THIS VIR_FROM_NONE
static const char *abs_top_srcdir;
# ifdef __linux__
# define RULESTYPE "linux"
# else
# error "test case not ported to this platform"
# endif
typedef struct _virNWFilterInst virNWFilterInst;
typedef virNWFilterInst *virNWFilterInstPtr;
struct _virNWFilterInst {
virNWFilterDefPtr *filters;
size_t nfilters;
virNWFilterRuleInstPtr *rules;
size_t nrules;
};
/*
* Some sets of rules that will be common to all test files,
* so we don't bother including them in the test data files
* as that would just bloat them
*/
static const char *commonRules[] = {
/* Dropping ebtables rules */
"ebtables -t nat -D PREROUTING -i vnet0 -j libvirt-J-vnet0\n"
"ebtables -t nat -D POSTROUTING -o vnet0 -j libvirt-P-vnet0\n"
"ebtables -t nat -L libvirt-J-vnet0\n"
"ebtables -t nat -L libvirt-P-vnet0\n"
"ebtables -t nat -F libvirt-J-vnet0\n"
"ebtables -t nat -X libvirt-J-vnet0\n"
"ebtables -t nat -F libvirt-P-vnet0\n"
"ebtables -t nat -X libvirt-P-vnet0\n",
/* Creating ebtables chains */
"ebtables -t nat -N libvirt-J-vnet0\n"
"ebtables -t nat -N libvirt-P-vnet0\n",
/* Dropping iptables rules */
"iptables -D libvirt-out -m physdev --physdev-is-bridged --physdev-out vnet0 -g FP-vnet0\n"
"iptables -D libvirt-out -m physdev --physdev-out vnet0 -g FP-vnet0\n"
"iptables -D libvirt-in -m physdev --physdev-in vnet0 -g FJ-vnet0\n"
"iptables -D libvirt-host-in -m physdev --physdev-in vnet0 -g HJ-vnet0\n"
"iptables -F FP-vnet0\n"
"iptables -X FP-vnet0\n"
"iptables -F FJ-vnet0\n"
"iptables -X FJ-vnet0\n"
"iptables -F HJ-vnet0\n"
"iptables -X HJ-vnet0\n",
/* Creating iptables chains */
"iptables -N libvirt-in\n"
"iptables -N libvirt-out\n"
"iptables -N libvirt-in-post\n"
"iptables -N libvirt-host-in\n"
"iptables -D FORWARD -j libvirt-in\n"
"iptables -D FORWARD -j libvirt-out\n"
"iptables -D FORWARD -j libvirt-in-post\n"
"iptables -D INPUT -j libvirt-host-in\n"
"iptables -I FORWARD 1 -j libvirt-in\n"
"iptables -I FORWARD 2 -j libvirt-out\n"
"iptables -I FORWARD 3 -j libvirt-in-post\n"
"iptables -I INPUT 1 -j libvirt-host-in\n"
"iptables -N FP-vnet0\n"
"iptables -N FJ-vnet0\n"
"iptables -N HJ-vnet0\n"
"iptables -A libvirt-out -m physdev --physdev-is-bridged --physdev-out vnet0 -g FP-vnet0\n"
"iptables -A libvirt-in -m physdev --physdev-in vnet0 -g FJ-vnet0\n"
"iptables -A libvirt-host-in -m physdev --physdev-in vnet0 -g HJ-vnet0\n"
"iptables -D libvirt-in-post -m physdev --physdev-in vnet0 -j ACCEPT\n"
"iptables -A libvirt-in-post -m physdev --physdev-in vnet0 -j ACCEPT\n",
/* Dropping ip6tables rules */
"ip6tables -D libvirt-out -m physdev --physdev-is-bridged --physdev-out vnet0 -g FP-vnet0\n"
"ip6tables -D libvirt-out -m physdev --physdev-out vnet0 -g FP-vnet0\n"
"ip6tables -D libvirt-in -m physdev --physdev-in vnet0 -g FJ-vnet0\n"
"ip6tables -D libvirt-host-in -m physdev --physdev-in vnet0 -g HJ-vnet0\n"
"ip6tables -F FP-vnet0\n"
"ip6tables -X FP-vnet0\n"
"ip6tables -F FJ-vnet0\n"
"ip6tables -X FJ-vnet0\n"
"ip6tables -F HJ-vnet0\n"
"ip6tables -X HJ-vnet0\n",
/* Creating ip6tables chains */
"ip6tables -N libvirt-in\n"
"ip6tables -N libvirt-out\n"
"ip6tables -N libvirt-in-post\n"
"ip6tables -N libvirt-host-in\n"
"ip6tables -D FORWARD -j libvirt-in\n"
"ip6tables -D FORWARD -j libvirt-out\n"
"ip6tables -D FORWARD -j libvirt-in-post\n"
"ip6tables -D INPUT -j libvirt-host-in\n"
"ip6tables -I FORWARD 1 -j libvirt-in\n"
"ip6tables -I FORWARD 2 -j libvirt-out\n"
"ip6tables -I FORWARD 3 -j libvirt-in-post\n"
"ip6tables -I INPUT 1 -j libvirt-host-in\n"
"ip6tables -N FP-vnet0\n"
"ip6tables -N FJ-vnet0\n"
"ip6tables -N HJ-vnet0\n"
"ip6tables -A libvirt-out -m physdev --physdev-is-bridged --physdev-out vnet0 -g FP-vnet0\n"
"ip6tables -A libvirt-in -m physdev --physdev-in vnet0 -g FJ-vnet0\n"
"ip6tables -A libvirt-host-in -m physdev --physdev-in vnet0 -g HJ-vnet0\n"
"ip6tables -D libvirt-in-post -m physdev --physdev-in vnet0 -j ACCEPT\n"
"ip6tables -A libvirt-in-post -m physdev --physdev-in vnet0 -j ACCEPT\n",
/* Inserting ebtables rules */
"ebtables -t nat -A PREROUTING -i vnet0 -j libvirt-J-vnet0\n"
"ebtables -t nat -A POSTROUTING -o vnet0 -j libvirt-P-vnet0\n",
};
static virNWFilterHashTablePtr
virNWFilterCreateVarsFrom(virNWFilterHashTablePtr vars1,
virNWFilterHashTablePtr vars2)
{
virNWFilterHashTablePtr res = virNWFilterHashTableCreate(0);
if (!res)
return NULL;
if (virNWFilterHashTablePutAll(vars1, res) < 0)
goto err_exit;
if (virNWFilterHashTablePutAll(vars2, res) < 0)
goto err_exit;
return res;
err_exit:
virNWFilterHashTableFree(res);
return NULL;
}
static void
virNWFilterRuleInstFree(virNWFilterRuleInstPtr inst)
{
if (!inst)
return;
virNWFilterHashTableFree(inst->vars);
VIR_FREE(inst);
}
static void
virNWFilterInstReset(virNWFilterInstPtr inst)
{
size_t i;
for (i = 0; i < inst->nfilters; i++)
virNWFilterDefFree(inst->filters[i]);
VIR_FREE(inst->filters);
inst->nfilters = 0;
for (i = 0; i < inst->nrules; i++)
virNWFilterRuleInstFree(inst->rules[i]);
VIR_FREE(inst->rules);
inst->nrules = 0;
}
static int
virNWFilterDefToInst(const char *xml,
virNWFilterHashTablePtr vars,
virNWFilterInstPtr inst);
static int
virNWFilterRuleDefToRuleInst(virNWFilterDefPtr def,
virNWFilterRuleDefPtr rule,
virNWFilterHashTablePtr vars,
virNWFilterInstPtr inst)
{
virNWFilterRuleInstPtr ruleinst;
int ret = -1;
if (VIR_ALLOC(ruleinst) < 0)
goto cleanup;
ruleinst->chainSuffix = def->chainsuffix;
ruleinst->chainPriority = def->chainPriority;
ruleinst->def = rule;
ruleinst->priority = rule->priority;
if (!(ruleinst->vars = virNWFilterHashTableCreate(0)))
goto cleanup;
if (virNWFilterHashTablePutAll(vars, ruleinst->vars) < 0)
goto cleanup;
if (VIR_APPEND_ELEMENT(inst->rules,
inst->nrules,
ruleinst) < 0)
goto cleanup;
ruleinst = NULL;
ret = 0;
cleanup:
virNWFilterRuleInstFree(ruleinst);
return ret;
}
static int
virNWFilterIncludeDefToRuleInst(virNWFilterIncludeDefPtr inc,
virNWFilterHashTablePtr vars,
virNWFilterInstPtr inst)
{
virNWFilterHashTablePtr tmpvars = NULL;
int ret = -1;
char *xml;
if (virAsprintf(&xml, "%s/nwfilterxml2firewalldata/%s.xml",
abs_srcdir, inc->filterref) < 0)
return -1;
/* create a temporary hashmap for depth-first tree traversal */
if (!(tmpvars = virNWFilterCreateVarsFrom(inc->params,
vars)))
goto cleanup;
if (virNWFilterDefToInst(xml,
tmpvars,
inst) < 0)
goto cleanup;
ret = 0;
cleanup:
if (ret < 0)
virNWFilterInstReset(inst);
virNWFilterHashTableFree(tmpvars);
VIR_FREE(xml);
return ret;
}
static int
virNWFilterDefToInst(const char *xml,
virNWFilterHashTablePtr vars,
virNWFilterInstPtr inst)
{
size_t i;
int ret = -1;
virNWFilterDefPtr def = virNWFilterDefParseFile(xml);
if (!def)
return -1;
if (VIR_APPEND_ELEMENT_COPY(inst->filters,
inst->nfilters,
def) < 0) {
virNWFilterDefFree(def);
goto cleanup;
}
for (i = 0; i < def->nentries; i++) {
if (def->filterEntries[i]->rule) {
if (virNWFilterRuleDefToRuleInst(def,
def->filterEntries[i]->rule,
vars,
inst) < 0)
goto cleanup;
} else if (def->filterEntries[i]->include) {
if (virNWFilterIncludeDefToRuleInst(def->filterEntries[i]->include,
vars,
inst) < 0)
goto cleanup;
}
}
ret = 0;
cleanup:
if (ret < 0)
virNWFilterInstReset(inst);
return ret;
}
static void testRemoveCommonRules(char *rules)
{
size_t i;
char *offset = rules;
for (i = 0; i < ARRAY_CARDINALITY(commonRules); i++) {
char *tmp = strstr(offset, commonRules[i]);
size_t len = strlen(commonRules[i]);
if (tmp) {
memmove(tmp, tmp + len, (strlen(tmp) + 1) - len);
offset = tmp;
}
}
}
static int testSetOneParameter(virNWFilterHashTablePtr vars,
const char *name,
const char *value)
{
int ret = -1;
virNWFilterVarValuePtr val;
if ((val = virHashLookup(vars->hashTable, name)) == NULL) {
val = virNWFilterVarValueCreateSimpleCopyValue(value);
if (!val)
goto cleanup;
if (virNWFilterHashTablePut(vars, name, val) < 0) {
virNWFilterVarValueFree(val);
goto cleanup;
}
} else {
if (virNWFilterVarValueAddValueCopy(val, value) < 0)
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
static int testSetDefaultParameters(virNWFilterHashTablePtr vars)
{
if (testSetOneParameter(vars, "IPSETNAME", "tck_test") < 0 ||
testSetOneParameter(vars, "A", "1.1.1.1") ||
testSetOneParameter(vars, "A", "2.2.2.2") ||
testSetOneParameter(vars, "A", "3.3.3.3") ||
testSetOneParameter(vars, "A", "3.3.3.3") ||
testSetOneParameter(vars, "B", "80") ||
testSetOneParameter(vars, "B", "90") ||
testSetOneParameter(vars, "B", "80") ||
testSetOneParameter(vars, "B", "80") ||
testSetOneParameter(vars, "C", "1080") ||
testSetOneParameter(vars, "C", "1090") ||
testSetOneParameter(vars, "C", "1100") ||
testSetOneParameter(vars, "C", "1110"))
return -1;
return 0;
}
static int testCompareXMLToArgvFiles(const char *xml,
const char *cmdline)
{
char *actualargv = NULL;
virBuffer buf = VIR_BUFFER_INITIALIZER;
virNWFilterHashTablePtr vars = virNWFilterHashTableCreate(0);
virNWFilterInst inst;
int ret = -1;
memset(&inst, 0, sizeof(inst));
virCommandSetDryRun(&buf, NULL, NULL);
if (!vars)
goto cleanup;
if (testSetDefaultParameters(vars) < 0)
goto cleanup;
if (virNWFilterDefToInst(xml,
vars,
&inst) < 0)
goto cleanup;
if (ebiptables_driver.applyNewRules("vnet0", inst.rules, inst.nrules) < 0)
goto cleanup;
if (virBufferError(&buf))
goto cleanup;
actualargv = virBufferContentAndReset(&buf);
virTestClearCommandPath(actualargv);
virCommandSetDryRun(NULL, NULL, NULL);
testRemoveCommonRules(actualargv);
if (virTestCompareToFile(actualargv, cmdline) < 0)
goto cleanup;
ret = 0;
cleanup:
virBufferFreeAndReset(&buf);
VIR_FREE(actualargv);
virNWFilterInstReset(&inst);
virNWFilterHashTableFree(vars);
return ret;
}
struct testInfo {
const char *name;
};
static int
testCompareXMLToIPTablesHelper(const void *data)
{
int result = -1;
const struct testInfo *info = data;
char *xml = NULL;
char *args = NULL;
if (virAsprintf(&xml, "%s/nwfilterxml2firewalldata/%s.xml",
abs_srcdir, info->name) < 0 ||
virAsprintf(&args, "%s/nwfilterxml2firewalldata/%s-%s.args",
abs_srcdir, info->name, RULESTYPE) < 0)
goto cleanup;
result = testCompareXMLToArgvFiles(xml, args);
cleanup:
VIR_FREE(xml);
VIR_FREE(args);
return result;
}
static bool
hasNetfilterTools(void)
{
return virFileIsExecutable(IPTABLES_PATH) &&
virFileIsExecutable(IP6TABLES_PATH) &&
virFileIsExecutable(EBTABLES_PATH);
}
static int
mymain(void)
{
int ret = 0;
abs_top_srcdir = getenv("abs_top_srcdir");
if (!abs_top_srcdir)
abs_top_srcdir = abs_srcdir "/..";
# define DO_TEST(name) \
do { \
static struct testInfo info = { \
name, \
}; \
if (virTestRun("NWFilter XML-2-firewall " name, \
testCompareXMLToIPTablesHelper, &info) < 0) \
ret = -1; \
} while (0)
virFirewallSetLockOverride(true);
if (virFirewallSetBackend(VIR_FIREWALL_BACKEND_DIRECT) < 0) {
if (!hasNetfilterTools()) {
fprintf(stderr, "iptables/ip6tables/ebtables tools not present");
return EXIT_AM_SKIP;
}
ret = -1;
goto cleanup;
}
DO_TEST("ah");
DO_TEST("ah-ipv6");
DO_TEST("all");
DO_TEST("all-ipv6");
DO_TEST("arp");
DO_TEST("comment");
DO_TEST("conntrack");
DO_TEST("esp");
DO_TEST("esp-ipv6");
DO_TEST("example-1");
DO_TEST("example-2");
DO_TEST("hex-data");
DO_TEST("icmp-direction2");
DO_TEST("icmp-direction3");
DO_TEST("icmp-direction");
DO_TEST("icmp");
DO_TEST("icmpv6");
DO_TEST("igmp");
DO_TEST("ip");
DO_TEST("ipset");
DO_TEST("ipt-no-macspoof");
DO_TEST("ipv6");
DO_TEST("iter1");
DO_TEST("iter2");
DO_TEST("iter3");
DO_TEST("mac");
DO_TEST("rarp");
DO_TEST("sctp");
DO_TEST("sctp-ipv6");
DO_TEST("stp");
DO_TEST("target2");
DO_TEST("target");
DO_TEST("tcp");
DO_TEST("tcp-ipv6");
DO_TEST("udp");
DO_TEST("udp-ipv6");
DO_TEST("udplite");
DO_TEST("udplite-ipv6");
DO_TEST("vlan");
cleanup:
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIR_TEST_MAIN(mymain)
#else /* ! defined (__linux__) */
int main(void)
{
return EXIT_AM_SKIP;
}
#endif /* ! defined (__linux__) */
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