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/*
* networkcommon_conf.c: network XML handling
*
* Copyright (C) 2006-2014 Red Hat, Inc.
* Copyright (C) 2006-2008 Daniel P. Berrange
*
* 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>
#include "virerror.h"
#include "networkcommon_conf.h"
#include "virxml.h"
#define VIR_FROM_THIS VIR_FROM_NETWORK
virNetDevIPRoute *
virNetDevIPRouteCreate(const char *errorDetail,
const char *family,
const char *address,
const char *netmask,
const char *gateway,
unsigned int prefix,
bool hasPrefix,
unsigned int metric,
bool hasMetric)
{
g_autoptr(virNetDevIPRoute) def = NULL;
virSocketAddr testAddr;
def = g_new0(virNetDevIPRoute, 1);
def->family = g_strdup(family);
def->prefix = prefix;
def->has_prefix = hasPrefix;
def->metric = metric;
def->has_metric = hasMetric;
/* Note: both network and gateway addresses must be specified */
if (!address) {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: Missing required address attribute in route definition"),
errorDetail);
return NULL;
}
if (!gateway) {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: Missing required gateway attribute in route definition"),
errorDetail);
return NULL;
}
if (virSocketAddrParse(&def->address, address, AF_UNSPEC) < 0) {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: Bad network address '%2$s' in route definition"),
errorDetail, address);
return NULL;
}
if (virSocketAddrParse(&def->gateway, gateway, AF_UNSPEC) < 0) {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: Bad gateway address '%2$s' in route definition"),
errorDetail, gateway);
return NULL;
}
/* validate network address, etc. for each family */
if ((def->family == NULL) || (STREQ(def->family, "ipv4"))) {
if (!(VIR_SOCKET_ADDR_IS_FAMILY(&def->address, AF_INET) ||
VIR_SOCKET_ADDR_IS_FAMILY(&def->address, AF_UNSPEC))) {
virReportError(VIR_ERR_XML_ERROR,
def->family == NULL ?
_("%1$s: No family specified for non-IPv4 address '%2$s' in route definition") :
_("%1$s: IPv4 family specified for non-IPv4 address '%2$s' in route definition"),
errorDetail, address);
return NULL;
}
if (!VIR_SOCKET_ADDR_IS_FAMILY(&def->gateway, AF_INET)) {
virReportError(VIR_ERR_XML_ERROR,
def->family == NULL ?
_("%1$s: No family specified for non-IPv4 gateway '%2$s' in route definition") :
_("%1$s: IPv4 family specified for non-IPv4 gateway '%2$s' in route definition"),
errorDetail, address);
return NULL;
}
if (netmask) {
if (virSocketAddrParse(&def->netmask, netmask, AF_UNSPEC) < 0) {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: Bad netmask address '%2$s' in route definition"),
errorDetail, netmask);
return NULL;
}
if (!VIR_SOCKET_ADDR_IS_FAMILY(&def->netmask, AF_INET)) {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: Invalid netmask '%2$s' for address '%3$s' (both must be IPv4)"),
errorDetail, netmask, address);
return NULL;
}
if (def->has_prefix) {
/* can't have both netmask and prefix at the same time */
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: Route definition cannot have both a prefix and a netmask"),
errorDetail);
return NULL;
}
}
if (def->prefix > 32) {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: Invalid prefix %2$u specified in route definition, must be 0 - 32"),
errorDetail, def->prefix);
return NULL;
}
} else if (STREQ(def->family, "ipv6")) {
if (!VIR_SOCKET_ADDR_IS_FAMILY(&def->address, AF_INET6)) {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: ipv6 family specified for non-IPv6 address '%2$s' in route definition"),
errorDetail, address);
return NULL;
}
if (netmask) {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: Specifying netmask invalid for IPv6 address '%2$s' in route definition"),
errorDetail, address);
return NULL;
}
if (!VIR_SOCKET_ADDR_IS_FAMILY(&def->gateway, AF_INET6)) {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: ipv6 specified for non-IPv6 gateway address '%2$s' in route definition"),
errorDetail, gateway);
return NULL;
}
if (def->prefix > 128) {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: Invalid prefix %2$u specified in route definition, must be 0 - 128"),
errorDetail, def->prefix);
return NULL;
}
} else {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: Unrecognized family '%2$s' in route definition"),
errorDetail, def->family);
return NULL;
}
/* make sure the address is a network address */
if (netmask) {
if (virSocketAddrMask(&def->address, &def->netmask, &testAddr) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("%1$s: Error converting address '%2$s' with netmask '%3$s' to network-address in route definition"),
errorDetail, address, netmask);
return NULL;
}
} else {
if (virSocketAddrMaskByPrefix(&def->address,
def->prefix, &testAddr) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("%1$s: Error converting address '%2$s' with prefix %3$u to network-address in route definition"),
errorDetail, address, def->prefix);
return NULL;
}
}
if (!virSocketAddrEqual(&def->address, &testAddr)) {
virReportError(VIR_ERR_XML_ERROR,
_("%1$s: Address '%2$s' in route definition is not a network address"),
errorDetail, address);
return NULL;
}
return g_steal_pointer(&def);
}
virNetDevIPRoute *
virNetDevIPRouteParseXML(const char *errorDetail,
xmlNodePtr node)
{
g_autofree char *family = virXMLPropString(node, "family");
g_autofree char *address = virXMLPropString(node, "address");
g_autofree char *netmask = virXMLPropString(node, "netmask");
g_autofree char *gateway = virXMLPropString(node, "gateway");
unsigned int prefix = 0;
unsigned int metric = 0;
bool hasPrefix = false;
bool hasMetric = false;
int rc;
if ((rc = virXMLPropUInt(node, "prefix", 10, VIR_XML_PROP_NONE, &prefix)) < 0)
return NULL;
if (rc == 1)
hasPrefix = true;
if ((rc = virXMLPropUInt(node, "metric", 10, VIR_XML_PROP_NONZERO, &metric)) < 0)
return NULL;
if (rc == 1)
hasMetric = true;
return virNetDevIPRouteCreate(errorDetail, family, address, netmask,
gateway, prefix, hasPrefix, metric,
hasMetric);
}
int
virNetDevIPRouteFormat(virBuffer *buf,
const virNetDevIPRoute *def)
{
g_autofree char *address = NULL;
g_autofree char *netmask = NULL;
g_autofree char *gateway = NULL;
virBufferAddLit(buf, "<route");
if (def->family)
virBufferAsprintf(buf, " family='%s'", def->family);
if (!(address = virSocketAddrFormat(&def->address)))
return -1;
virBufferAsprintf(buf, " address='%s'", address);
if (VIR_SOCKET_ADDR_VALID(&def->netmask)) {
if (!(netmask = virSocketAddrFormat(&def->netmask)))
return -1;
virBufferAsprintf(buf, " netmask='%s'", netmask);
}
if (def->has_prefix)
virBufferAsprintf(buf, " prefix='%u'", def->prefix);
if (!(gateway = virSocketAddrFormat(&def->gateway)))
return -1;
virBufferAsprintf(buf, " gateway='%s'", gateway);
if (def->has_metric && def->metric > 0)
virBufferAsprintf(buf, " metric='%u'", def->metric);
virBufferAddLit(buf, "/>\n");
return 0;
}
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