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Set/delete functionality in BSD routing table.

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This commit is contained in:
Adam Ierymenko 2014-07-17 17:17:59 -07:00
parent 51766e6549
commit 1189f4a568
3 changed files with 142 additions and 17 deletions
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106
node/BSDRoutingTable.cpp
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@ -48,6 +48,8 @@
// All I wanted was the bloody rounting table. I didn't expect the Spanish inquisition.
#define ZT_BSD_ROUTE_CMD "/sbin/route"
namespace ZeroTier {
BSDRoutingTable::BSDRoutingTable()
@ -180,6 +182,8 @@ std::vector<RoutingTable::Entry> BSDRoutingTable::get(bool includeLinkLocal,bool
}
e.metric = (int)rtm->rtm_rmx.rmx_hopcount;
if (e.metric < 0)
e.metric = 0;
if (((includeLinkLocal)||(!e.destination.isLinkLocal()))&&((includeLoopback)||((!e.destination.isLoopback())&&(!e.gateway.isLoopback()))))
entries.push_back(e);
@ -214,21 +218,109 @@ std::vector<RoutingTable::Entry> BSDRoutingTable::get(bool includeLinkLocal,bool
return entries;
}
bool BSDRoutingTable::set(const RoutingTable::Entry &re)
RoutingTable::Entry BSDRoutingTable::set(const InetAddress &destination,const InetAddress &gateway,const char *device,int metric)
{
return true;
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();
}
} // namespace ZeroTier
// Enable and build to test routing table interface
///*
#if 0
using namespace ZeroTier;
int main(int argc,char **argv)
{
ZeroTier::BSDRoutingTable rt;
std::vector<ZeroTier::RoutingTable::Entry> ents(rt.get());
for(std::vector<ZeroTier::RoutingTable::Entry>::iterator e(ents.begin());e!=ents.end();++e)
BSDRoutingTable rt;
printf("<destination> <gateway> <interface> <metric>\n");
std::vector<RoutingTable::Entry> ents(rt.get());
for(std::vector<RoutingTable::Entry>::iterator e(ents.begin());e!=ents.end();++e)
printf("%s\n",e->toString().c_str());
printf("\n");
printf("adding 1.1.1.0 and 2.2.2.0...\n");
rt.set(InetAddress("1.1.1.0",24),InetAddress("1.2.3.4",0),(const char *)0,1);
rt.set(InetAddress("2.2.2.0",24),InetAddress(),"en0",1);
printf("\n");
printf("<destination> <gateway> <interface> <metric>\n");
ents = rt.get();
for(std::vector<RoutingTable::Entry>::iterator e(ents.begin());e!=ents.end();++e)
printf("%s\n",e->toString().c_str());
printf("\n");
printf("deleting 1.1.1.0 and 2.2.2.0...\n");
rt.set(InetAddress("1.1.1.0",24),InetAddress("1.2.3.4",0),(const char *)0,-1);
rt.set(InetAddress("2.2.2.0",24),InetAddress(),"en0",-1);
printf("\n");
printf("<destination> <gateway> <interface> <metric>\n");
ents = rt.get();
for(std::vector<RoutingTable::Entry>::iterator e(ents.begin());e!=ents.end();++e)
printf("%s\n",e->toString().c_str());
printf("\n");
return 0;
}
//*/
#endif