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libvirt/tests/nwfilterxml2firewalltest.c
Laine Stump d566cc55bf util: remove currentBackend from virfirewall.c 
Since the currentBackend (direct vs. firewalld) setting is no longer
used for anything, we don't need to set it (either explicitly from
tests, or implicitly during init), and can completely remove it.

Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-12-13 13:37:31 -05:00

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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"
# include "virfirewall.h"
# define LIBVIRT_VIRCOMMANDPRIV_H_ALLOW
# include "vircommandpriv.h"
# define VIR_FROM_THIS VIR_FROM_NONE
# ifdef __linux__
# define RULESTYPE "linux"
# else
# error "test case not ported to this platform"
# endif
typedef struct _virNWFilterInst virNWFilterInst;
struct _virNWFilterInst {
virNWFilterDef **filters;
size_t nfilters;
virNWFilterRuleInst **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 \\\n--concurrent \\\n-t nat \\\n-D PREROUTING \\\n-i vnet0 \\\n-j libvirt-J-vnet0\n"
"ebtables \\\n--concurrent \\\n-t nat \\\n-D POSTROUTING \\\n-o vnet0 \\\n-j libvirt-P-vnet0\n"
"ebtables \\\n--concurrent \\\n-t nat \\\n-L libvirt-J-vnet0\n"
"ebtables \\\n--concurrent \\\n-t nat \\\n-L libvirt-P-vnet0\n"
"ebtables \\\n--concurrent \\\n-t nat \\\n-F libvirt-J-vnet0\n"
"ebtables \\\n--concurrent \\\n-t nat \\\n-X libvirt-J-vnet0\n"
"ebtables \\\n--concurrent \\\n-t nat \\\n-F libvirt-P-vnet0\n"
"ebtables \\\n--concurrent \\\n-t nat \\\n-X libvirt-P-vnet0\n",
/* Creating ebtables chains */
"ebtables \\\n--concurrent \\\n-t nat \\\n-N libvirt-J-vnet0\n"
"ebtables \\\n--concurrent \\\n-t nat \\\n-N libvirt-P-vnet0\n",
/* Dropping iptables rules */
"iptables \\\n-w \\\n-D libvirt-out \\\n-m physdev \\\n--physdev-is-bridged \\\n--physdev-out vnet0 \\\n-g FP-vnet0\n"
"iptables \\\n-w \\\n-D libvirt-out \\\n-m physdev \\\n--physdev-out vnet0 \\\n-g FP-vnet0\n"
"iptables \\\n-w \\\n-D libvirt-in \\\n-m physdev \\\n--physdev-in vnet0 \\\n-g FJ-vnet0\n"
"iptables \\\n-w \\\n-D libvirt-host-in \\\n-m physdev \\\n--physdev-in vnet0 \\\n-g HJ-vnet0\n"
"iptables \\\n-w \\\n-F FP-vnet0\n"
"iptables \\\n-w \\\n-X FP-vnet0\n"
"iptables \\\n-w \\\n-F FJ-vnet0\n"
"iptables \\\n-w \\\n-X FJ-vnet0\n"
"iptables \\\n-w \\\n-F HJ-vnet0\n"
"iptables \\\n-w \\\n-X HJ-vnet0\n",
/* Creating iptables chains */
"iptables \\\n-w \\\n-N libvirt-in\n"
"iptables \\\n-w \\\n-N libvirt-out\n"
"iptables \\\n-w \\\n-N libvirt-in-post\n"
"iptables \\\n-w \\\n-N libvirt-host-in\n"
"iptables \\\n-w \\\n-D FORWARD \\\n-j libvirt-in\n"
"iptables \\\n-w \\\n-D FORWARD \\\n-j libvirt-out\n"
"iptables \\\n-w \\\n-D FORWARD \\\n-j libvirt-in-post\n"
"iptables \\\n-w \\\n-D INPUT \\\n-j libvirt-host-in\n"
"iptables \\\n-w \\\n-I FORWARD 1 \\\n-j libvirt-in\n"
"iptables \\\n-w \\\n-I FORWARD 2 \\\n-j libvirt-out\n"
"iptables \\\n-w \\\n-I FORWARD 3 \\\n-j libvirt-in-post\n"
"iptables \\\n-w \\\n-I INPUT 1 \\\n-j libvirt-host-in\n"
"iptables \\\n-w \\\n-N FP-vnet0\n"
"iptables \\\n-w \\\n-N FJ-vnet0\n"
"iptables \\\n-w \\\n-N HJ-vnet0\n"
"iptables \\\n-w \\\n-A libvirt-out \\\n-m physdev \\\n--physdev-is-bridged \\\n--physdev-out vnet0 \\\n-g FP-vnet0\n"
"iptables \\\n-w \\\n-A libvirt-in \\\n-m physdev \\\n--physdev-in vnet0 \\\n-g FJ-vnet0\n"
"iptables \\\n-w \\\n-A libvirt-host-in \\\n-m physdev \\\n--physdev-in vnet0 \\\n-g HJ-vnet0\n"
"iptables \\\n-w \\\n-D libvirt-in-post \\\n-m physdev \\\n--physdev-in vnet0 \\\n-j ACCEPT\n"
"iptables \\\n-w \\\n-A libvirt-in-post \\\n-m physdev \\\n--physdev-in vnet0 \\\n-j ACCEPT\n",
/* Dropping ip6tables rules */
"ip6tables \\\n-w \\\n-D libvirt-out \\\n-m physdev \\\n--physdev-is-bridged \\\n--physdev-out vnet0 \\\n-g FP-vnet0\n"
"ip6tables \\\n-w \\\n-D libvirt-out \\\n-m physdev \\\n--physdev-out vnet0 \\\n-g FP-vnet0\n"
"ip6tables \\\n-w \\\n-D libvirt-in \\\n-m physdev \\\n--physdev-in vnet0 \\\n-g FJ-vnet0\n"
"ip6tables \\\n-w \\\n-D libvirt-host-in \\\n-m physdev \\\n--physdev-in vnet0 \\\n-g HJ-vnet0\n"
"ip6tables \\\n-w \\\n-F FP-vnet0\n"
"ip6tables \\\n-w \\\n-X FP-vnet0\n"
"ip6tables \\\n-w \\\n-F FJ-vnet0\n"
"ip6tables \\\n-w \\\n-X FJ-vnet0\n"
"ip6tables \\\n-w \\\n-F HJ-vnet0\n"
"ip6tables \\\n-w \\\n-X HJ-vnet0\n",
/* Creating ip6tables chains */
"ip6tables \\\n-w \\\n-N libvirt-in\n"
"ip6tables \\\n-w \\\n-N libvirt-out\n"
"ip6tables \\\n-w \\\n-N libvirt-in-post\n"
"ip6tables \\\n-w \\\n-N libvirt-host-in\n"
"ip6tables \\\n-w \\\n-D FORWARD \\\n-j libvirt-in\n"
"ip6tables \\\n-w \\\n-D FORWARD \\\n-j libvirt-out\n"
"ip6tables \\\n-w \\\n-D FORWARD \\\n-j libvirt-in-post\n"
"ip6tables \\\n-w \\\n-D INPUT \\\n-j libvirt-host-in\n"
"ip6tables \\\n-w \\\n-I FORWARD 1 \\\n-j libvirt-in\n"
"ip6tables \\\n-w \\\n-I FORWARD 2 \\\n-j libvirt-out\n"
"ip6tables \\\n-w \\\n-I FORWARD 3 \\\n-j libvirt-in-post\n"
"ip6tables \\\n-w \\\n-I INPUT 1 \\\n-j libvirt-host-in\n"
"ip6tables \\\n-w \\\n-N FP-vnet0\n"
"ip6tables \\\n-w \\\n-N FJ-vnet0\n"
"ip6tables \\\n-w \\\n-N HJ-vnet0\n"
"ip6tables \\\n-w \\\n-A libvirt-out \\\n-m physdev \\\n--physdev-is-bridged \\\n--physdev-out vnet0 \\\n-g FP-vnet0\n"
"ip6tables \\\n-w \\\n-A libvirt-in \\\n-m physdev \\\n--physdev-in vnet0 \\\n-g FJ-vnet0\n"
"ip6tables \\\n-w \\\n-A libvirt-host-in \\\n-m physdev \\\n--physdev-in vnet0 \\\n-g HJ-vnet0\n"
"ip6tables \\\n-w \\\n-D libvirt-in-post \\\n-m physdev \\\n--physdev-in vnet0 \\\n-j ACCEPT\n"
"ip6tables \\\n-w \\\n-A libvirt-in-post \\\n-m physdev \\\n--physdev-in vnet0 \\\n-j ACCEPT\n",
/* Inserting ebtables rules */
"ebtables \\\n--concurrent \\\n-t nat \\\n-A PREROUTING \\\n-i vnet0 \\\n-j libvirt-J-vnet0\n"
"ebtables \\\n--concurrent \\\n-t nat \\\n-A POSTROUTING \\\n-o vnet0 \\\n-j libvirt-P-vnet0\n",
};
static GHashTable *
virNWFilterCreateVarsFrom(GHashTable *vars1,
GHashTable *vars2)
{
g_autoptr(GHashTable) res = virHashNew(virNWFilterVarValueHashFree);
if (virNWFilterHashTablePutAll(vars1, res) < 0)
return NULL;
if (virNWFilterHashTablePutAll(vars2, res) < 0)
return NULL;
return g_steal_pointer(&res);
}
static void
virNWFilterRuleInstFree(virNWFilterRuleInst *inst)
{
if (!inst)
return;
g_clear_pointer(&inst->vars, g_hash_table_unref);
g_free(inst);
}
static void
virNWFilterInstReset(virNWFilterInst *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,
GHashTable *vars,
virNWFilterInst *inst);
static int
virNWFilterRuleDefToRuleInst(virNWFilterDef *def,
virNWFilterRuleDef *rule,
GHashTable *vars,
virNWFilterInst *inst)
{
virNWFilterRuleInst *ruleinst;
int ret = -1;
ruleinst = g_new0(virNWFilterRuleInst, 1);
ruleinst->chainSuffix = def->chainsuffix;
ruleinst->chainPriority = def->chainPriority;
ruleinst->def = rule;
ruleinst->priority = rule->priority;
ruleinst->vars = virHashNew(virNWFilterVarValueHashFree);
if (virNWFilterHashTablePutAll(vars, ruleinst->vars) < 0)
goto cleanup;
VIR_APPEND_ELEMENT(inst->rules, inst->nrules, ruleinst);
ret = 0;
cleanup:
virNWFilterRuleInstFree(ruleinst);
return ret;
}
static int
virNWFilterIncludeDefToRuleInst(virNWFilterIncludeDef *inc,
GHashTable *vars,
virNWFilterInst *inst)
{
g_autoptr(GHashTable) tmpvars = NULL;
int ret = -1;
g_autofree char *xml = NULL;
xml = g_strdup_printf("%s/nwfilterxml2firewalldata/%s.xml", abs_srcdir,
inc->filterref);
/* 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);
return ret;
}
static int
virNWFilterDefToInst(const char *xml,
GHashTable *vars,
virNWFilterInst *inst)
{
size_t i;
int ret = -1;
virNWFilterDef *def = virNWFilterDefParseFile(xml);
if (!def)
return -1;
VIR_APPEND_ELEMENT_COPY(inst->filters, inst->nfilters, def);
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 < G_N_ELEMENTS(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(GHashTable *vars,
const char *name,
const char *value)
{
virNWFilterVarValue *val;
if ((val = virHashLookup(vars, name)) == NULL) {
val = virNWFilterVarValueCreateSimpleCopyValue(value);
if (!val)
return -1;
if (virHashUpdateEntry(vars, name, val) < 0) {
virNWFilterVarValueFree(val);
return -1;
}
} else {
if (virNWFilterVarValueAddValueCopy(val, value) < 0)
return -1;
}
return 0;
}
static int testSetDefaultParameters(GHashTable *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)
{
g_autofree char *actualargv = NULL;
g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
g_autoptr(GHashTable) vars = virHashNew(virNWFilterVarValueHashFree);
virNWFilterInst inst;
int ret = -1;
g_autoptr(virCommandDryRunToken) dryRunToken = virCommandDryRunTokenNew();
memset(&inst, 0, sizeof(inst));
virCommandSetDryRun(dryRunToken, &buf, true, true, NULL, NULL);
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;
actualargv = virBufferContentAndReset(&buf);
testRemoveCommonRules(actualargv);
if (virTestCompareToFileFull(actualargv, cmdline, false) < 0)
goto cleanup;
ret = 0;
cleanup:
virNWFilterInstReset(&inst);
return ret;
}
struct testInfo {
const char *name;
};
static int
testCompareXMLToIPTablesHelper(const void *data)
{
int result = -1;
const struct testInfo *info = data;
g_autofree char *xml = NULL;
g_autofree char *args = NULL;
xml = g_strdup_printf("%s/nwfilterxml2firewalldata/%s.xml",
abs_srcdir, info->name);
args = g_strdup_printf("%s/nwfilterxml2firewalldata/%s-%s.args",
abs_srcdir, info->name, RULESTYPE);
result = testCompareXMLToArgvFiles(xml, args);
return result;
}
static int
mymain(void)
{
int ret = 0;
# define DO_TEST(name) \
do { \
static struct testInfo info = { \
name, \
}; \
if (virTestRun("NWFilter XML-2-firewall " name, \
testCompareXMLToIPTablesHelper, &info) < 0) \
ret = -1; \
} while (0)
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");
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIR_TEST_MAIN_PRELOAD(mymain, VIR_TEST_MOCK("virfirewall"))
#else /* ! defined (__linux__) */
int main(void)
{
return EXIT_AM_SKIP;
}
#endif /* ! defined (__linux__) */
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