/**
* virNetDevIPRouteAdd:
* @ifname: the interface name
* @addr: the IP network address (IPv4 or IPv6)
* @prefix: number of 1 bits in the netmask
* @gateway: via address for route (same as @addr)
*
* Add a route for a network IP address to an interface. This function
* *does not* remove any previously added IP static routes.
*
* Returns 0 in case of success or -1 in case of error.
*/
int
virNetDevIPRouteAdd(const char *ifname,
virSocketAddrPtr addr,
unsigned int prefix,
virSocketAddrPtr gateway,
unsigned int metric)
{
int ret = -1;
struct nl_msg *nlmsg = NULL;
struct nlmsghdr *resp = NULL;
unsigned int recvbuflen;
unsigned int ifindex;
struct rtmsg rtmsg;
void *gatewayData = NULL;
void *addrData = NULL;
size_t addrDataLen;
int errCode;
virSocketAddr defaultAddr;
virSocketAddrPtr actualAddr;
char *toStr = NULL;
char *viaStr = NULL;
actualAddr = addr;
/* If we have no valid network address, then use the default one */
if (!addr || !VIR_SOCKET_ADDR_VALID(addr)) {
VIR_DEBUG("computing default address");
int family = VIR_SOCKET_ADDR_FAMILY(gateway);
if (family == AF_INET) {
if (virSocketAddrParseIPv4(&defaultAddr, VIR_SOCKET_ADDR_IPV4_ALL) < 0)
goto cleanup;
} else {
if (virSocketAddrParseIPv6(&defaultAddr, VIR_SOCKET_ADDR_IPV6_ALL) < 0)
goto cleanup;
}
actualAddr = &defaultAddr;
}
toStr = virSocketAddrFormat(actualAddr);
viaStr = virSocketAddrFormat(gateway);
VIR_DEBUG("Adding route %s/%d via %s", toStr, prefix, viaStr);
if (virNetDevGetIPAddressBinary(actualAddr, &addrData, &addrDataLen) < 0 ||
virNetDevGetIPAddressBinary(gateway, &gatewayData, &addrDataLen) < 0)
goto cleanup;
/* Get the interface index */
if ((ifindex = if_nametoindex(ifname)) == 0)
goto cleanup;
if (!(nlmsg = nlmsg_alloc_simple(RTM_NEWROUTE,
NLM_F_REQUEST | NLM_F_CREATE |
NLM_F_EXCL))) {
virReportOOMError();
goto cleanup;
}
memset(&rtmsg, 0, sizeof(rtmsg));
rtmsg.rtm_family = VIR_SOCKET_ADDR_FAMILY(gateway);
rtmsg.rtm_table = RT_TABLE_MAIN;
rtmsg.rtm_scope = RT_SCOPE_UNIVERSE;
rtmsg.rtm_protocol = RTPROT_BOOT;
rtmsg.rtm_type = RTN_UNICAST;
rtmsg.rtm_dst_len = prefix;
if (nlmsg_append(nlmsg, &rtmsg, sizeof(rtmsg), NLMSG_ALIGNTO) < 0)
goto buffer_too_small;
if (prefix > 0 && nla_put(nlmsg, RTA_DST, addrDataLen, addrData) < 0)
goto buffer_too_small;
if (nla_put(nlmsg, RTA_GATEWAY, addrDataLen, gatewayData) < 0)
goto buffer_too_small;
if (nla_put_u32(nlmsg, RTA_OIF, ifindex) < 0)
goto buffer_too_small;
if (metric > 0 && nla_put_u32(nlmsg, RTA_PRIORITY, metric) < 0)
goto buffer_too_small;
if (virNetlinkCommand(nlmsg, &resp, &recvbuflen, 0, 0,
NETLINK_ROUTE, 0) < 0)
goto cleanup;
if ((errCode = virNetlinkGetErrorCode(resp, recvbuflen)) < 0) {
virReportSystemError(errCode, _("Error adding route to %s"), ifname);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(toStr);
VIR_FREE(viaStr);
nlmsg_free(nlmsg);
return ret;
buffer_too_small:
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("allocated netlink buffer is too small"));
goto cleanup;
}
static int parallelsGetHostOnlyNetInfo(virNetworkDefPtr def, const char *name)
{
const char *tmp;
virJSONValuePtr jobj = NULL, jobj2;
int ret = -1;
if (VIR_EXPAND_N(def->ips, def->nips, 1) < 0) {
virReportOOMError();
goto cleanup;
}
jobj = parallelsParseOutput("prlsrvctl", "net", "info", "-j", name, NULL);
if (!jobj) {
parallelsParseError();
goto cleanup;
}
if (!(jobj2 = virJSONValueObjectGet(jobj, "Parallels adapter"))) {
parallelsParseError();
goto cleanup;
}
if (!(def->ips[0].family = strdup("ipv4"))) {
virReportOOMError();
goto cleanup;
};
if (!(tmp = virJSONValueObjectGetString(jobj2, "IP address"))) {
parallelsParseError();
goto cleanup;
}
if (virSocketAddrParseIPv4(&def->ips[0].address, tmp) < 0) {
parallelsParseError();
goto cleanup;
}
if (!(tmp = virJSONValueObjectGetString(jobj2, "Subnet mask"))) {
parallelsParseError();
goto cleanup;
}
if (virSocketAddrParseIPv4(&def->ips[0].netmask, tmp) < 0) {
parallelsParseError();
goto cleanup;
}
if (!(jobj2 = virJSONValueObjectGet(jobj, "DHCPv4 server"))) {
parallelsParseError();
goto cleanup;
}
if (VIR_EXPAND_N(def->ips[0].ranges, def->ips[0].nranges, 1) < 0) {
virReportOOMError();
goto cleanup;
}
if (!(tmp = virJSONValueObjectGetString(jobj2, "IP scope start address"))) {
parallelsParseError();
goto cleanup;
}
if (virSocketAddrParseIPv4(&def->ips[0].ranges[0].start, tmp) < 0) {
parallelsParseError();
goto cleanup;
}
if (!(tmp = virJSONValueObjectGetString(jobj2, "IP scope end address"))) {
parallelsParseError();
goto cleanup;
}
if (virSocketAddrParseIPv4(&def->ips[0].ranges[0].end, tmp) < 0) {
parallelsParseError();
goto cleanup;
}
ret = 0;
cleanup:
virJSONValueFree(jobj);
return ret;
}