mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-22 06:17:48 +00:00
609 lines
18 KiB
C++
609 lines
18 KiB
C++
/*
|
|
* ZeroTier One - Network Virtualization Everywhere
|
|
* Copyright (C) 2011-2016 ZeroTier, Inc. https://www.zerotier.com/
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "../node/Constants.hpp"
|
|
|
|
#ifdef __WINDOWS__
|
|
#include <WinSock2.h>
|
|
#include <Windows.h>
|
|
#include <netioapi.h>
|
|
#include <IPHlpApi.h>
|
|
#endif
|
|
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#ifdef __UNIX_LIKE__
|
|
#include <unistd.h>
|
|
#include <sys/param.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <net/route.h>
|
|
#include <net/if.h>
|
|
#include <net/if_dl.h>
|
|
#include <ifaddrs.h>
|
|
#endif
|
|
|
|
#include <vector>
|
|
#include <algorithm>
|
|
#include <utility>
|
|
|
|
#include "RoutingTable.hpp"
|
|
|
|
#define ZT_BSD_ROUTE_CMD "/sbin/route"
|
|
#define ZT_LINUX_IP_COMMAND "/sbin/ip"
|
|
|
|
namespace ZeroTier {
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
#ifdef __LINUX__
|
|
|
|
std::vector<RoutingTable::Entry> RoutingTable::get(bool includeLinkLocal,bool includeLoopback)
|
|
{
|
|
char buf[131072];
|
|
char *stmp,*stmp2;
|
|
std::vector<RoutingTable::Entry> entries;
|
|
|
|
{
|
|
int fd = ::open("/proc/net/route",O_RDONLY);
|
|
if (fd <= 0)
|
|
buf[0] = (char)0;
|
|
else {
|
|
int n = (int)::read(fd,buf,sizeof(buf) - 1);
|
|
::close(fd);
|
|
if (n < 0) n = 0;
|
|
buf[n] = (char)0;
|
|
}
|
|
}
|
|
|
|
int lineno = 0;
|
|
for(char *line=Utils::stok(buf,"\r\n",&stmp);(line);line=Utils::stok((char *)0,"\r\n",&stmp)) {
|
|
if (lineno == 0) {
|
|
++lineno;
|
|
continue; // skip header
|
|
}
|
|
|
|
char *iface = (char *)0;
|
|
uint32_t destination = 0;
|
|
uint32_t gateway = 0;
|
|
int metric = 0;
|
|
uint32_t mask = 0;
|
|
|
|
int fno = 0;
|
|
for(char *f=Utils::stok(line,"\t \r\n",&stmp2);(f);f=Utils::stok((char *)0,"\t \r\n",&stmp2)) {
|
|
switch(fno) {
|
|
case 0: iface = f; break;
|
|
case 1: destination = (uint32_t)Utils::hexStrToULong(f); break;
|
|
case 2: gateway = (uint32_t)Utils::hexStrToULong(f); break;
|
|
case 6: metric = (int)Utils::strToInt(f); break;
|
|
case 7: mask = (uint32_t)Utils::hexStrToULong(f); break;
|
|
}
|
|
++fno;
|
|
}
|
|
|
|
if ((iface)&&(destination)) {
|
|
RoutingTable::Entry e;
|
|
if (destination)
|
|
e.destination.set(&destination,4,Utils::countBits(mask));
|
|
e.gateway.set(&gateway,4,0);
|
|
e.deviceIndex = 0; // not used on Linux
|
|
e.metric = metric;
|
|
Utils::scopy(e.device,sizeof(e.device),iface);
|
|
if ((e.destination)&&((includeLinkLocal)||(!e.destination.isLinkLocal()))&&((includeLoopback)||((!e.destination.isLoopback())&&(!e.gateway.isLoopback())&&(strcmp(iface,"lo")))))
|
|
entries.push_back(e);
|
|
}
|
|
|
|
++lineno;
|
|
}
|
|
|
|
{
|
|
int fd = ::open("/proc/net/ipv6_route",O_RDONLY);
|
|
if (fd <= 0)
|
|
buf[0] = (char)0;
|
|
else {
|
|
int n = (int)::read(fd,buf,sizeof(buf) - 1);
|
|
::close(fd);
|
|
if (n < 0) n = 0;
|
|
buf[n] = (char)0;
|
|
}
|
|
}
|
|
|
|
for(char *line=Utils::stok(buf,"\r\n",&stmp);(line);line=Utils::stok((char *)0,"\r\n",&stmp)) {
|
|
char *destination = (char *)0;
|
|
unsigned int destPrefixLen = 0;
|
|
char *gateway = (char *)0; // next hop in ipv6 terminology
|
|
int metric = 0;
|
|
char *device = (char *)0;
|
|
|
|
int fno = 0;
|
|
for(char *f=Utils::stok(line,"\t \r\n",&stmp2);(f);f=Utils::stok((char *)0,"\t \r\n",&stmp2)) {
|
|
switch(fno) {
|
|
case 0: destination = f; break;
|
|
case 1: destPrefixLen = (unsigned int)Utils::hexStrToULong(f); break;
|
|
case 4: gateway = f; break;
|
|
case 5: metric = (int)Utils::hexStrToLong(f); break;
|
|
case 9: device = f; break;
|
|
}
|
|
++fno;
|
|
}
|
|
|
|
if ((device)&&(destination)) {
|
|
unsigned char tmp[16];
|
|
RoutingTable::Entry e;
|
|
Utils::unhex(destination,tmp,16);
|
|
if ((!Utils::isZero(tmp,16))&&(tmp[0] != 0xff))
|
|
e.destination.set(tmp,16,destPrefixLen);
|
|
Utils::unhex(gateway,tmp,16);
|
|
e.gateway.set(tmp,16,0);
|
|
e.deviceIndex = 0; // not used on Linux
|
|
e.metric = metric;
|
|
Utils::scopy(e.device,sizeof(e.device),device);
|
|
if ((e.destination)&&((includeLinkLocal)||(!e.destination.isLinkLocal()))&&((includeLoopback)||((!e.destination.isLoopback())&&(!e.gateway.isLoopback())&&(strcmp(device,"lo")))))
|
|
entries.push_back(e);
|
|
}
|
|
}
|
|
|
|
std::sort(entries.begin(),entries.end());
|
|
return entries;
|
|
}
|
|
|
|
RoutingTable::Entry RoutingTable::set(const InetAddress &destination,const InetAddress &gateway,const char *device,int metric,bool ifscope)
|
|
{
|
|
char metstr[128];
|
|
|
|
if ((!gateway)&&((!device)||(!device[0])))
|
|
return RoutingTable::Entry();
|
|
|
|
Utils::snprintf(metstr,sizeof(metstr),"%d",metric);
|
|
|
|
if (metric < 0) {
|
|
long pid = (long)vfork();
|
|
if (pid == 0) {
|
|
if (gateway) {
|
|
if ((device)&&(device[0])) {
|
|
::execl(ZT_LINUX_IP_COMMAND,ZT_LINUX_IP_COMMAND,"route","del",destination.toString().c_str(),"via",gateway.toIpString().c_str(),"dev",device,(const char *)0);
|
|
} else {
|
|
::execl(ZT_LINUX_IP_COMMAND,ZT_LINUX_IP_COMMAND,"route","del",destination.toString().c_str(),"via",gateway.toIpString().c_str(),(const char *)0);
|
|
}
|
|
} else {
|
|
::execl(ZT_LINUX_IP_COMMAND,ZT_LINUX_IP_COMMAND,"route","del",destination.toString().c_str(),"dev",device,(const char *)0);
|
|
}
|
|
::_exit(-1);
|
|
} else if (pid > 0) {
|
|
int exitcode = -1;
|
|
::waitpid(pid,&exitcode,0);
|
|
}
|
|
} else {
|
|
long pid = (long)vfork();
|
|
if (pid == 0) {
|
|
if (gateway) {
|
|
if ((device)&&(device[0])) {
|
|
::execl(ZT_LINUX_IP_COMMAND,ZT_LINUX_IP_COMMAND,"route","replace",destination.toString().c_str(),"metric",metstr,"via",gateway.toIpString().c_str(),"dev",device,(const char *)0);
|
|
} else {
|
|
::execl(ZT_LINUX_IP_COMMAND,ZT_LINUX_IP_COMMAND,"route","replace",destination.toString().c_str(),"metric",metstr,"via",gateway.toIpString().c_str(),(const char *)0);
|
|
}
|
|
} else {
|
|
::execl(ZT_LINUX_IP_COMMAND,ZT_LINUX_IP_COMMAND,"route","replace",destination.toString().c_str(),"metric",metstr,"dev",device,(const char *)0);
|
|
}
|
|
::_exit(-1);
|
|
} else if (pid > 0) {
|
|
int exitcode = -1;
|
|
::waitpid(pid,&exitcode,0);
|
|
}
|
|
}
|
|
|
|
std::vector<RoutingTable::Entry> rtab(get(true,true));
|
|
std::vector<RoutingTable::Entry>::iterator bestEntry(rtab.end());
|
|
for(std::vector<RoutingTable::Entry>::iterator e(rtab.begin());e!=rtab.end();++e) {
|
|
if ((e->destination == destination)&&(e->gateway.ipsEqual(gateway))) {
|
|
if ((device)&&(device[0])) {
|
|
if (!strcmp(device,e->device)) {
|
|
if (metric == e->metric)
|
|
bestEntry = e;
|
|
}
|
|
}
|
|
if (bestEntry == rtab.end())
|
|
bestEntry = e;
|
|
}
|
|
}
|
|
if (bestEntry != rtab.end())
|
|
return *bestEntry;
|
|
|
|
return RoutingTable::Entry();
|
|
}
|
|
|
|
#endif // __LINUX__
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
#ifdef __BSD__
|
|
|
|
std::vector<RoutingTable::Entry> RoutingTable::get(bool includeLinkLocal,bool includeLoopback)
|
|
{
|
|
std::vector<RoutingTable::Entry> entries;
|
|
int mib[6];
|
|
size_t needed;
|
|
|
|
mib[0] = CTL_NET;
|
|
mib[1] = PF_ROUTE;
|
|
mib[2] = 0;
|
|
mib[3] = 0;
|
|
mib[4] = NET_RT_DUMP;
|
|
mib[5] = 0;
|
|
if (!sysctl(mib,6,NULL,&needed,NULL,0)) {
|
|
if (needed <= 0)
|
|
return entries;
|
|
|
|
char *buf = (char *)::malloc(needed);
|
|
if (buf) {
|
|
if (!sysctl(mib,6,buf,&needed,NULL,0)) {
|
|
struct rt_msghdr *rtm;
|
|
for(char *next=buf,*end=buf+needed;next<end;) {
|
|
rtm = (struct rt_msghdr *)next;
|
|
char *saptr = (char *)(rtm + 1);
|
|
char *saend = next + rtm->rtm_msglen;
|
|
|
|
if (((rtm->rtm_flags & RTF_LLINFO) == 0)&&((rtm->rtm_flags & RTF_HOST) == 0)&&((rtm->rtm_flags & RTF_UP) != 0)&&((rtm->rtm_flags & RTF_MULTICAST) == 0)) {
|
|
RoutingTable::Entry e;
|
|
e.deviceIndex = -9999; // unset
|
|
|
|
int which = 0;
|
|
while (saptr < saend) {
|
|
struct sockaddr *sa = (struct sockaddr *)saptr;
|
|
unsigned int salen = sa->sa_len;
|
|
if (!salen)
|
|
break;
|
|
|
|
// Skip missing fields in rtm_addrs bit field
|
|
while ((rtm->rtm_addrs & 1) == 0) {
|
|
rtm->rtm_addrs >>= 1;
|
|
++which;
|
|
if (which > 6)
|
|
break;
|
|
}
|
|
if (which > 6)
|
|
break;
|
|
|
|
rtm->rtm_addrs >>= 1;
|
|
switch(which++) {
|
|
case 0:
|
|
//printf("RTA_DST\n");
|
|
if (sa->sa_family == AF_INET6) {
|
|
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
|
|
// Nobody expects the Spanish inquisition!
|
|
if ((sin6->sin6_addr.s6_addr[0] == 0xfe)&&((sin6->sin6_addr.s6_addr[1] & 0xc0) == 0x80)) {
|
|
// Our chief weapon is... in-band signaling!
|
|
// Seriously who in the living fuck thought this was a good idea and
|
|
// then had the sadistic idea to not document it anywhere? Of course it's
|
|
// not like there is any documentation on BSD sysctls anyway.
|
|
unsigned int interfaceIndex = ((((unsigned int)sin6->sin6_addr.s6_addr[2]) << 8) & 0xff) | (((unsigned int)sin6->sin6_addr.s6_addr[3]) & 0xff);
|
|
sin6->sin6_addr.s6_addr[2] = 0;
|
|
sin6->sin6_addr.s6_addr[3] = 0;
|
|
if (!sin6->sin6_scope_id)
|
|
sin6->sin6_scope_id = interfaceIndex;
|
|
}
|
|
}
|
|
e.destination = *sa;
|
|
break;
|
|
case 1:
|
|
//printf("RTA_GATEWAY\n");
|
|
switch(sa->sa_family) {
|
|
case AF_LINK:
|
|
e.deviceIndex = (int)((const struct sockaddr_dl *)sa)->sdl_index;
|
|
break;
|
|
case AF_INET:
|
|
case AF_INET6:
|
|
e.gateway = *sa;
|
|
break;
|
|
}
|
|
break;
|
|
case 2: {
|
|
if (e.destination.isV6()) {
|
|
salen = sizeof(struct sockaddr_in6); // Confess!
|
|
unsigned int bits = 0;
|
|
for(int i=0;i<16;++i) {
|
|
unsigned char c = (unsigned char)((const struct sockaddr_in6 *)sa)->sin6_addr.s6_addr[i];
|
|
if (c == 0xff)
|
|
bits += 8;
|
|
else break;
|
|
/* must they be multiples of 8? Most of the BSD source I can find says yes..?
|
|
else {
|
|
while ((c & 0x80) == 0x80) {
|
|
++bits;
|
|
c <<= 1;
|
|
}
|
|
break;
|
|
}
|
|
*/
|
|
}
|
|
e.destination.setPort(bits);
|
|
} else {
|
|
salen = sizeof(struct sockaddr_in); // Confess!
|
|
e.destination.setPort((unsigned int)Utils::countBits((uint32_t)((const struct sockaddr_in *)sa)->sin_addr.s_addr));
|
|
}
|
|
//printf("RTA_NETMASK\n");
|
|
} break;
|
|
/*
|
|
case 3:
|
|
//printf("RTA_GENMASK\n");
|
|
break;
|
|
case 4:
|
|
//printf("RTA_IFP\n");
|
|
break;
|
|
case 5:
|
|
//printf("RTA_IFA\n");
|
|
break;
|
|
case 6:
|
|
//printf("RTA_AUTHOR\n");
|
|
break;
|
|
*/
|
|
}
|
|
|
|
saptr += salen;
|
|
}
|
|
|
|
e.metric = (int)rtm->rtm_rmx.rmx_hopcount;
|
|
if (e.metric < 0)
|
|
e.metric = 0;
|
|
|
|
InetAddress::IpScope dscope = e.destination.ipScope();
|
|
if ( ((includeLinkLocal)||(dscope != InetAddress::IP_SCOPE_LINK_LOCAL)) && ((includeLoopback)||((dscope != InetAddress::IP_SCOPE_LOOPBACK) && (e.gateway.ipScope() != InetAddress::IP_SCOPE_LOOPBACK) )))
|
|
entries.push_back(e);
|
|
}
|
|
|
|
next = saend;
|
|
}
|
|
}
|
|
|
|
::free(buf);
|
|
}
|
|
}
|
|
|
|
for(std::vector<ZeroTier::RoutingTable::Entry>::iterator e1(entries.begin());e1!=entries.end();++e1) {
|
|
if ((!e1->device[0])&&(e1->deviceIndex >= 0))
|
|
if_indextoname(e1->deviceIndex,e1->device);
|
|
}
|
|
for(std::vector<ZeroTier::RoutingTable::Entry>::iterator e1(entries.begin());e1!=entries.end();++e1) {
|
|
if ((!e1->device[0])&&(e1->gateway)) {
|
|
int bestMetric = 9999999;
|
|
for(std::vector<ZeroTier::RoutingTable::Entry>::iterator e2(entries.begin());e2!=entries.end();++e2) {
|
|
if ((e2->destination.containsAddress(e1->gateway))&&(e2->metric <= bestMetric)) {
|
|
bestMetric = e2->metric;
|
|
Utils::scopy(e1->device,sizeof(e1->device),e2->device);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
std::sort(entries.begin(),entries.end());
|
|
|
|
return entries;
|
|
}
|
|
|
|
RoutingTable::Entry RoutingTable::set(const InetAddress &destination,const InetAddress &gateway,const char *device,int metric,bool ifscope)
|
|
{
|
|
if ((!gateway)&&((!device)||(!device[0])))
|
|
return RoutingTable::Entry();
|
|
|
|
std::vector<RoutingTable::Entry> rtab(get(true,true));
|
|
|
|
for(std::vector<RoutingTable::Entry>::iterator e(rtab.begin());e!=rtab.end();++e) {
|
|
if (e->destination == destination) {
|
|
if (((!device)||(!device[0]))||(!strcmp(device,e->device))) {
|
|
long p = (long)fork();
|
|
if (p > 0) {
|
|
int exitcode = -1;
|
|
::waitpid(p,&exitcode,0);
|
|
} else if (p == 0) {
|
|
::close(STDOUT_FILENO);
|
|
::close(STDERR_FILENO);
|
|
::execl(ZT_BSD_ROUTE_CMD,ZT_BSD_ROUTE_CMD,"delete",(destination.isV6() ? "-inet6" : "-inet"),destination.toString().c_str(),(const char *)0);
|
|
::_exit(-1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (metric < 0)
|
|
return RoutingTable::Entry();
|
|
|
|
{
|
|
char hcstr[64];
|
|
Utils::snprintf(hcstr,sizeof(hcstr),"%d",metric);
|
|
long p = (long)fork();
|
|
if (p > 0) {
|
|
int exitcode = -1;
|
|
::waitpid(p,&exitcode,0);
|
|
} else if (p == 0) {
|
|
::close(STDOUT_FILENO);
|
|
::close(STDERR_FILENO);
|
|
if (gateway) {
|
|
::execl(ZT_BSD_ROUTE_CMD,ZT_BSD_ROUTE_CMD,"add",(destination.isV6() ? "-inet6" : "-inet"),destination.toString().c_str(),gateway.toIpString().c_str(),"-hopcount",hcstr,(const char *)0);
|
|
} else if ((device)&&(device[0])) {
|
|
::execl(ZT_BSD_ROUTE_CMD,ZT_BSD_ROUTE_CMD,"add",(destination.isV6() ? "-inet6" : "-inet"),destination.toString().c_str(),"-interface",device,"-hopcount",hcstr,(const char *)0);
|
|
}
|
|
::_exit(-1);
|
|
}
|
|
}
|
|
|
|
rtab = get(true,true);
|
|
std::vector<RoutingTable::Entry>::iterator bestEntry(rtab.end());
|
|
for(std::vector<RoutingTable::Entry>::iterator e(rtab.begin());e!=rtab.end();++e) {
|
|
if ((e->destination == destination)&&(e->gateway.ipsEqual(gateway))) {
|
|
if ((device)&&(device[0])) {
|
|
if (!strcmp(device,e->device)) {
|
|
if (metric == e->metric)
|
|
bestEntry = e;
|
|
}
|
|
}
|
|
if (bestEntry == rtab.end())
|
|
bestEntry = e;
|
|
}
|
|
}
|
|
if (bestEntry != rtab.end())
|
|
return *bestEntry;
|
|
|
|
return RoutingTable::Entry();
|
|
}
|
|
|
|
#endif // __BSD__
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
#ifdef __WINDOWS__
|
|
|
|
static void _copyInetAddressToSockaddrInet(const InetAddress &a,SOCKADDR_INET &sinet)
|
|
{
|
|
memset(&sinet,0,sizeof(sinet));
|
|
if (a.isV4()) {
|
|
sinet.Ipv4.sin_addr.S_un.S_addr = *((const uint32_t *)a.rawIpData());
|
|
sinet.Ipv4.sin_family = AF_INET;
|
|
sinet.Ipv4.sin_port = htons(a.port());
|
|
} else if (a.isV6()) {
|
|
memcpy(sinet.Ipv6.sin6_addr.u.Byte,a.rawIpData(),16);
|
|
sinet.Ipv6.sin6_family = AF_INET6;
|
|
sinet.Ipv6.sin6_port = htons(a.port());
|
|
}
|
|
}
|
|
|
|
std::vector<RoutingTable::Entry> RoutingTable::get(bool includeLinkLocal,bool includeLoopback) const
|
|
{
|
|
std::vector<RoutingTable::Entry> entries;
|
|
PMIB_IPFORWARD_TABLE2 rtbl = NULL;
|
|
|
|
if (GetIpForwardTable2(AF_UNSPEC,&rtbl) != NO_ERROR)
|
|
return entries;
|
|
if (!rtbl)
|
|
return entries;
|
|
|
|
for(ULONG r=0;r<rtbl->NumEntries;++r) {
|
|
RoutingTable::Entry e;
|
|
switch(rtbl->Table[r].DestinationPrefix.Prefix.si_family) {
|
|
case AF_INET:
|
|
e.destination.set(&(rtbl->Table[r].DestinationPrefix.Prefix.Ipv4.sin_addr.S_un.S_addr),4,rtbl->Table[r].DestinationPrefix.PrefixLength);
|
|
break;
|
|
case AF_INET6:
|
|
e.destination.set(rtbl->Table[r].DestinationPrefix.Prefix.Ipv6.sin6_addr.u.Byte,16,rtbl->Table[r].DestinationPrefix.PrefixLength);
|
|
break;
|
|
}
|
|
switch(rtbl->Table[r].NextHop.si_family) {
|
|
case AF_INET:
|
|
e.gateway.set(&(rtbl->Table[r].NextHop.Ipv4.sin_addr.S_un.S_addr),4,0);
|
|
break;
|
|
case AF_INET6:
|
|
e.gateway.set(rtbl->Table[r].NextHop.Ipv6.sin6_addr.u.Byte,16,0);
|
|
break;
|
|
}
|
|
e.deviceIndex = (int)rtbl->Table[r].InterfaceIndex;
|
|
e.metric = (int)rtbl->Table[r].Metric;
|
|
ConvertInterfaceLuidToNameA(&(rtbl->Table[r].InterfaceLuid),e.device,sizeof(e.device));
|
|
if ((e.destination)&&((includeLinkLocal)||(!e.destination.isLinkLocal()))&&((includeLoopback)||((!e.destination.isLoopback())&&(!e.gateway.isLoopback()))))
|
|
entries.push_back(e);
|
|
}
|
|
|
|
FreeMibTable(rtbl);
|
|
std::sort(entries.begin(),entries.end());
|
|
return entries;
|
|
}
|
|
|
|
RoutingTable::Entry RoutingTable::set(const InetAddress &destination,const InetAddress &gateway,const char *device,int metric,bool ifscope)
|
|
{
|
|
NET_LUID luid;
|
|
luid.Value = 0;
|
|
if (ConvertInterfaceNameToLuidA(device,&luid) != NO_ERROR)
|
|
return RoutingTable::Entry();
|
|
|
|
bool needCreate = true;
|
|
PMIB_IPFORWARD_TABLE2 rtbl = NULL;
|
|
if (GetIpForwardTable2(AF_UNSPEC,&rtbl) != NO_ERROR)
|
|
return RoutingTable::Entry();
|
|
if (!rtbl)
|
|
return RoutingTable::Entry();
|
|
for(ULONG r=0;r<rtbl->NumEntries;++r) {
|
|
if (rtbl->Table[r].InterfaceLuid.Value == luid.Value) {
|
|
InetAddress rdest;
|
|
switch(rtbl->Table[r].DestinationPrefix.Prefix.si_family) {
|
|
case AF_INET:
|
|
rdest.set(&(rtbl->Table[r].DestinationPrefix.Prefix.Ipv4.sin_addr.S_un.S_addr),4,rtbl->Table[r].DestinationPrefix.PrefixLength);
|
|
break;
|
|
case AF_INET6:
|
|
rdest.set(rtbl->Table[r].DestinationPrefix.Prefix.Ipv6.sin6_addr.u.Byte,16,rtbl->Table[r].DestinationPrefix.PrefixLength);
|
|
break;
|
|
}
|
|
if (rdest == destination) {
|
|
if (metric >= 0) {
|
|
_copyInetAddressToSockaddrInet(gateway,rtbl->Table[r].NextHop);
|
|
rtbl->Table[r].Metric = metric;
|
|
SetIpForwardEntry2(&(rtbl->Table[r]));
|
|
needCreate = false;
|
|
} else {
|
|
DeleteIpForwardEntry2(&(rtbl->Table[r]));
|
|
FreeMibTable(rtbl);
|
|
return RoutingTable::Entry();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
FreeMibTable(rtbl);
|
|
|
|
if ((metric >= 0)&&(needCreate)) {
|
|
MIB_IPFORWARD_ROW2 nr;
|
|
InitializeIpForwardEntry(&nr);
|
|
nr.InterfaceLuid.Value = luid.Value;
|
|
_copyInetAddressToSockaddrInet(destination,nr.DestinationPrefix.Prefix);
|
|
nr.DestinationPrefix.PrefixLength = destination.netmaskBits();
|
|
_copyInetAddressToSockaddrInet(gateway,nr.NextHop);
|
|
nr.Metric = metric;
|
|
nr.Protocol = MIB_IPPROTO_NETMGMT;
|
|
DWORD result = CreateIpForwardEntry2(&nr);
|
|
if (result != NO_ERROR)
|
|
return RoutingTable::Entry();
|
|
}
|
|
|
|
std::vector<RoutingTable::Entry> rtab(get(true,true));
|
|
std::vector<RoutingTable::Entry>::iterator bestEntry(rtab.end());
|
|
for(std::vector<RoutingTable::Entry>::iterator e(rtab.begin());e!=rtab.end();++e) {
|
|
if ((e->destination == destination)&&(e->gateway.ipsEqual(gateway))) {
|
|
if ((device)&&(device[0])) {
|
|
if (!strcmp(device,e->device)) {
|
|
if (metric == e->metric)
|
|
bestEntry = e;
|
|
}
|
|
}
|
|
if (bestEntry == rtab.end())
|
|
bestEntry = e;
|
|
}
|
|
}
|
|
if (bestEntry != rtab.end())
|
|
return *bestEntry;
|
|
return RoutingTable::Entry();
|
|
}
|
|
|
|
#endif // __WINDOWS__
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
} // namespace ZeroTier
|