mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-10-05 22:05:47 +00:00
Convert nwfilter ebtablesApplyBasicRules to virFirewall
Convert the nwfilter ebtablesApplyBasicRules method to use the virFirewall object APIs instead of creating shell scripts using virBuffer APIs. This provides a performance improvement through allowing direct use of firewalld dbus APIs and will facilitate automated testing. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
parent
138ef25e99
commit
d01eb15303
@ -2896,6 +2896,21 @@ ebtablesCreateTmpRootChain(virBufferPtr buf,
|
|||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static void
|
||||||
|
ebtablesCreateTmpRootChainFW(virFirewallPtr fw,
|
||||||
|
int incoming, const char *ifname)
|
||||||
|
{
|
||||||
|
char chain[MAX_CHAINNAME_LENGTH];
|
||||||
|
char chainPrefix = (incoming) ? CHAINPREFIX_HOST_IN_TEMP
|
||||||
|
: CHAINPREFIX_HOST_OUT_TEMP;
|
||||||
|
|
||||||
|
PRINT_ROOT_CHAIN(chain, chainPrefix, ifname);
|
||||||
|
|
||||||
|
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_ETHERNET,
|
||||||
|
"-t", "nat", "-N", chain, NULL);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
static void
|
static void
|
||||||
ebtablesLinkTmpRootChain(virBufferPtr buf,
|
ebtablesLinkTmpRootChain(virBufferPtr buf,
|
||||||
bool incoming, const char *ifname)
|
bool incoming, const char *ifname)
|
||||||
@ -2919,6 +2934,24 @@ ebtablesLinkTmpRootChain(virBufferPtr buf,
|
|||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static void
|
||||||
|
ebtablesLinkTmpRootChainFW(virFirewallPtr fw,
|
||||||
|
int incoming, const char *ifname)
|
||||||
|
{
|
||||||
|
char chain[MAX_CHAINNAME_LENGTH];
|
||||||
|
char chainPrefix = incoming ? CHAINPREFIX_HOST_IN_TEMP
|
||||||
|
: CHAINPREFIX_HOST_OUT_TEMP;
|
||||||
|
|
||||||
|
PRINT_ROOT_CHAIN(chain, chainPrefix, ifname);
|
||||||
|
|
||||||
|
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_ETHERNET,
|
||||||
|
"-t", "nat", "-A",
|
||||||
|
incoming ? EBTABLES_CHAIN_INCOMING : EBTABLES_CHAIN_OUTGOING,
|
||||||
|
incoming ? "-i" : "-o",
|
||||||
|
ifname, "-j", chain, NULL);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
static void
|
static void
|
||||||
_ebtablesRemoveRootChain(virBufferPtr buf,
|
_ebtablesRemoveRootChain(virBufferPtr buf,
|
||||||
bool incoming, const char *ifname,
|
bool incoming, const char *ifname,
|
||||||
@ -3436,74 +3469,54 @@ static int
|
|||||||
ebtablesApplyBasicRules(const char *ifname,
|
ebtablesApplyBasicRules(const char *ifname,
|
||||||
const virMacAddr *macaddr)
|
const virMacAddr *macaddr)
|
||||||
{
|
{
|
||||||
virBuffer buf = VIR_BUFFER_INITIALIZER;
|
virFirewallPtr fw = virFirewallNew();
|
||||||
char chain[MAX_CHAINNAME_LENGTH];
|
char chain[MAX_CHAINNAME_LENGTH];
|
||||||
char chainPrefix = CHAINPREFIX_HOST_IN_TEMP;
|
char chainPrefix = CHAINPREFIX_HOST_IN_TEMP;
|
||||||
char macaddr_str[VIR_MAC_STRING_BUFLEN];
|
char macaddr_str[VIR_MAC_STRING_BUFLEN];
|
||||||
|
|
||||||
if (!ebtables_cmd_path) {
|
|
||||||
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
|
|
||||||
_("cannot create rules since ebtables tool is "
|
|
||||||
"missing."));
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
|
|
||||||
virMacAddrFormat(macaddr, macaddr_str);
|
virMacAddrFormat(macaddr, macaddr_str);
|
||||||
|
|
||||||
ebiptablesAllTeardown(ifname);
|
if (ebiptablesAllTeardown(ifname) < 0)
|
||||||
|
goto error;
|
||||||
|
|
||||||
NWFILTER_SET_EBTABLES_SHELLVAR(&buf);
|
virFirewallStartTransaction(fw, 0);
|
||||||
|
|
||||||
ebtablesCreateTmpRootChain(&buf, true, ifname);
|
ebtablesCreateTmpRootChainFW(fw, true, ifname);
|
||||||
|
|
||||||
PRINT_ROOT_CHAIN(chain, chainPrefix, ifname);
|
PRINT_ROOT_CHAIN(chain, chainPrefix, ifname);
|
||||||
virBufferAsprintf(&buf,
|
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_ETHERNET,
|
||||||
CMD_DEF("$EBT -t nat -A %s -s ! %s -j DROP") CMD_SEPARATOR
|
"-t", "nat", "-A", chain,
|
||||||
CMD_EXEC
|
"-s", "!", macaddr_str,
|
||||||
"%s",
|
"-j", "DROP", NULL);
|
||||||
|
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_ETHERNET,
|
||||||
|
"-t", "nat", "-A", chain,
|
||||||
|
"-p", "IPv4",
|
||||||
|
"-j", "ACCEPT", NULL);
|
||||||
|
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_ETHERNET,
|
||||||
|
"-t", "nat", "-A", chain,
|
||||||
|
"-p", "ARP",
|
||||||
|
"-j", "ACCEPT", NULL);
|
||||||
|
virFirewallAddRule(fw, VIR_FIREWALL_LAYER_ETHERNET,
|
||||||
|
"-t", "nat", "-A", chain,
|
||||||
|
"-j", "DROP", NULL);
|
||||||
|
|
||||||
chain, macaddr_str,
|
ebtablesLinkTmpRootChainFW(fw, true, ifname);
|
||||||
CMD_STOPONERR(true));
|
ebtablesRenameTmpRootChainFW(fw, true, ifname);
|
||||||
|
|
||||||
virBufferAsprintf(&buf,
|
virMutexLock(&execCLIMutex);
|
||||||
CMD_DEF("$EBT -t nat -A %s -p IPv4 -j ACCEPT") CMD_SEPARATOR
|
if (virFirewallApply(fw) < 0) {
|
||||||
CMD_EXEC
|
virMutexUnlock(&execCLIMutex);
|
||||||
"%s",
|
|
||||||
|
|
||||||
chain,
|
|
||||||
CMD_STOPONERR(true));
|
|
||||||
|
|
||||||
virBufferAsprintf(&buf,
|
|
||||||
CMD_DEF("$EBT -t nat -A %s -p ARP -j ACCEPT") CMD_SEPARATOR
|
|
||||||
CMD_EXEC
|
|
||||||
"%s",
|
|
||||||
|
|
||||||
chain,
|
|
||||||
CMD_STOPONERR(true));
|
|
||||||
|
|
||||||
virBufferAsprintf(&buf,
|
|
||||||
CMD_DEF("$EBT -t nat -A %s -j DROP") CMD_SEPARATOR
|
|
||||||
CMD_EXEC
|
|
||||||
"%s",
|
|
||||||
|
|
||||||
chain,
|
|
||||||
CMD_STOPONERR(true));
|
|
||||||
|
|
||||||
ebtablesLinkTmpRootChain(&buf, true, ifname);
|
|
||||||
ebtablesRenameTmpRootChain(&buf, true, ifname);
|
|
||||||
|
|
||||||
if (ebiptablesExecCLI(&buf, false, NULL) < 0)
|
|
||||||
goto tear_down_tmpebchains;
|
goto tear_down_tmpebchains;
|
||||||
|
}
|
||||||
|
virMutexUnlock(&execCLIMutex);
|
||||||
|
|
||||||
|
virFirewallFree(fw);
|
||||||
return 0;
|
return 0;
|
||||||
|
|
||||||
tear_down_tmpebchains:
|
tear_down_tmpebchains:
|
||||||
ebtablesCleanAll(ifname);
|
ebtablesCleanAll(ifname);
|
||||||
|
error:
|
||||||
virReportError(VIR_ERR_BUILD_FIREWALL,
|
virFirewallFree(fw);
|
||||||
"%s",
|
|
||||||
_("Some rules could not be created."));
|
|
||||||
|
|
||||||
return -1;
|
return -1;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -277,6 +277,77 @@ testNWFilterEBIPTablesTearNewRules(const void *opaque ATTRIBUTE_UNUSED)
|
|||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static int
|
||||||
|
testNWFilterEBIPTablesApplyBasicRules(const void *opaque ATTRIBUTE_UNUSED)
|
||||||
|
{
|
||||||
|
virBuffer buf = VIR_BUFFER_INITIALIZER;
|
||||||
|
const char *expected =
|
||||||
|
"iptables -D libvirt-out -m physdev --physdev-is-bridged --physdev-out vnet0 -g FO-vnet0\n"
|
||||||
|
"iptables -D libvirt-out -m physdev --physdev-out vnet0 -g FO-vnet0\n"
|
||||||
|
"iptables -D libvirt-in -m physdev --physdev-in vnet0 -g FI-vnet0\n"
|
||||||
|
"iptables -D libvirt-host-in -m physdev --physdev-in vnet0 -g HI-vnet0\n"
|
||||||
|
"iptables -D libvirt-in-post -m physdev --physdev-in vnet0 -j ACCEPT\n"
|
||||||
|
"iptables -F FO-vnet0\n"
|
||||||
|
"iptables -X FO-vnet0\n"
|
||||||
|
"iptables -F FI-vnet0\n"
|
||||||
|
"iptables -X FI-vnet0\n"
|
||||||
|
"iptables -F HI-vnet0\n"
|
||||||
|
"iptables -X HI-vnet0\n"
|
||||||
|
"ip6tables -D libvirt-out -m physdev --physdev-is-bridged --physdev-out vnet0 -g FO-vnet0\n"
|
||||||
|
"ip6tables -D libvirt-out -m physdev --physdev-out vnet0 -g FO-vnet0\n"
|
||||||
|
"ip6tables -D libvirt-in -m physdev --physdev-in vnet0 -g FI-vnet0\n"
|
||||||
|
"ip6tables -D libvirt-host-in -m physdev --physdev-in vnet0 -g HI-vnet0\n"
|
||||||
|
"ip6tables -D libvirt-in-post -m physdev --physdev-in vnet0 -j ACCEPT\n"
|
||||||
|
"ip6tables -F FO-vnet0\n"
|
||||||
|
"ip6tables -X FO-vnet0\n"
|
||||||
|
"ip6tables -F FI-vnet0\n"
|
||||||
|
"ip6tables -X FI-vnet0\n"
|
||||||
|
"ip6tables -F HI-vnet0\n"
|
||||||
|
"ip6tables -X HI-vnet0\n"
|
||||||
|
"ebtables -t nat -D PREROUTING -i vnet0 -j libvirt-I-vnet0\n"
|
||||||
|
"ebtables -t nat -D POSTROUTING -o vnet0 -j libvirt-O-vnet0\n"
|
||||||
|
"ebtables -t nat -L libvirt-I-vnet0\n"
|
||||||
|
"ebtables -t nat -L libvirt-O-vnet0\n"
|
||||||
|
"ebtables -t nat -F libvirt-I-vnet0\n"
|
||||||
|
"ebtables -t nat -X libvirt-I-vnet0\n"
|
||||||
|
"ebtables -t nat -F libvirt-O-vnet0\n"
|
||||||
|
"ebtables -t nat -X libvirt-O-vnet0\n"
|
||||||
|
"ebtables -t nat -N libvirt-J-vnet0\n"
|
||||||
|
"ebtables -t nat -A libvirt-J-vnet0 -s '!' 10:20:30:40:50:60 -j DROP\n"
|
||||||
|
"ebtables -t nat -A libvirt-J-vnet0 -p IPv4 -j ACCEPT\n"
|
||||||
|
"ebtables -t nat -A libvirt-J-vnet0 -p ARP -j ACCEPT\n"
|
||||||
|
"ebtables -t nat -A libvirt-J-vnet0 -j DROP\n"
|
||||||
|
"ebtables -t nat -A PREROUTING -i vnet0 -j libvirt-J-vnet0\n"
|
||||||
|
"ebtables -t nat -E libvirt-J-vnet0 libvirt-I-vnet0\n";
|
||||||
|
char *actual = NULL;
|
||||||
|
int ret = -1;
|
||||||
|
virMacAddr mac = { .addr = { 0x10, 0x20, 0x30, 0x40, 0x50, 0x60 } };
|
||||||
|
|
||||||
|
virCommandSetDryRun(&buf, NULL, NULL);
|
||||||
|
|
||||||
|
if (ebiptables_driver.applyBasicRules("vnet0", &mac) < 0)
|
||||||
|
goto cleanup;
|
||||||
|
|
||||||
|
if (virBufferError(&buf))
|
||||||
|
goto cleanup;
|
||||||
|
|
||||||
|
actual = virBufferContentAndReset(&buf);
|
||||||
|
virtTestClearCommandPath(actual);
|
||||||
|
|
||||||
|
if (STRNEQ_NULLABLE(actual, expected)) {
|
||||||
|
virtTestDifference(stderr, actual, expected);
|
||||||
|
goto cleanup;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = 0;
|
||||||
|
cleanup:
|
||||||
|
virCommandSetDryRun(NULL, NULL, NULL);
|
||||||
|
virBufferFreeAndReset(&buf);
|
||||||
|
VIR_FREE(actual);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
static int
|
static int
|
||||||
mymain(void)
|
mymain(void)
|
||||||
{
|
{
|
||||||
@ -307,6 +378,11 @@ mymain(void)
|
|||||||
NULL) < 0)
|
NULL) < 0)
|
||||||
ret = -1;
|
ret = -1;
|
||||||
|
|
||||||
|
if (virtTestRun("ebiptablesApplyBasicRules",
|
||||||
|
testNWFilterEBIPTablesApplyBasicRules,
|
||||||
|
NULL) < 0)
|
||||||
|
ret = -1;
|
||||||
|
|
||||||
cleanup:
|
cleanup:
|
||||||
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
|
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
|
||||||
}
|
}
|
||||||
|
Loading…
Reference in New Issue
Block a user