/* * 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 * . * */ #include #if defined (__linux__) # include "testutils.h" # include "nwfilter/nwfilter_ebiptables_driver.h" # include "virbuffer.h" # define LIBVIRT_VIRFIREWALLPRIV_H_ALLOW # include "virfirewallpriv.h" # define LIBVIRT_VIRCOMMANDPRIV_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 virHashTablePtr virNWFilterCreateVarsFrom(virHashTablePtr vars1, virHashTablePtr vars2) { virHashTablePtr 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: virHashFree(res); return NULL; } static void virNWFilterRuleInstFree(virNWFilterRuleInstPtr inst) { if (!inst) return; virHashFree(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, virHashTablePtr vars, virNWFilterInstPtr inst); static int virNWFilterRuleDefToRuleInst(virNWFilterDefPtr def, virNWFilterRuleDefPtr rule, virHashTablePtr 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, virHashTablePtr vars, virNWFilterInstPtr inst) { virHashTablePtr 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); virHashFree(tmpvars); VIR_FREE(xml); return ret; } static int virNWFilterDefToInst(const char *xml, virHashTablePtr 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(virHashTablePtr vars, const char *name, const char *value) { int ret = -1; virNWFilterVarValuePtr val; if ((val = virHashLookup(vars, name)) == NULL) { val = virNWFilterVarValueCreateSimpleCopyValue(value); if (!val) goto cleanup; if (virHashUpdateEntry(vars, name, val) < 0) { virNWFilterVarValueFree(val); goto cleanup; } } else { if (virNWFilterVarValueAddValueCopy(val, value) < 0) goto cleanup; } ret = 0; cleanup: return ret; } static int testSetDefaultParameters(virHashTablePtr 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; virHashTablePtr 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); virHashFree(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__) */