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rtnetlink integrated. no more callouts to iproute2

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This commit is contained in:
Grant Limberg 2018-06-04 12:24:12 -07:00
parent 62210e57f1
commit b22405b64b
7 changed files with 566 additions and 243 deletions
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104
osdep/LinuxEthernetTap.cpp
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@ -56,6 +56,7 @@
#include "../node/Dictionary.hpp"
#include "OSUtils.hpp"
#include "LinuxEthernetTap.hpp"
#include "LinuxNetLink.hpp"
// ff:ff:ff:ff:ff:ff with no ADI
static const ZeroTier::MulticastGroup _blindWildcardMulticastGroup(ZeroTier::MAC(0xff),0);
@ -97,6 +98,9 @@ LinuxEthernetTap::LinuxEthernetTap(
char procpath[128],nwids[32];
struct stat sbuf;
// ensure netlink connection is started
(void)LinuxNetLink::getInstance();
OSUtils::ztsnprintf(nwids,sizeof(nwids),"%.16llx",nwid);
Mutex::Lock _l(__tapCreateLock); // create only one tap at a time, globally
@ -263,18 +267,8 @@ bool LinuxEthernetTap::enabled() const
static bool ___removeIp(const std::string &_dev,const InetAddress &ip)
{
long cpid = (long)vfork();
if (cpid == 0) {
OSUtils::redirectUnixOutputs("/dev/null",(const char *)0);
setenv("PATH", "/sbin:/bin:/usr/sbin:/usr/bin", 1);
char iptmp[128];
::execlp("ip","ip","addr","del",ip.toString(iptmp),"dev",_dev.c_str(),(const char *)0);
::_exit(-1);
} else {
int exitcode = -1;
::waitpid(cpid,&exitcode,0);
return (exitcode == 0);
}
LinuxNetLink::getInstance().removeAddress(ip, _dev.c_str());
return true;
}
#ifdef __SYNOLOGY__
@ -285,49 +279,32 @@ bool LinuxEthernetTap::addIpSyn(std::vector<InetAddress> ips)
std::string cfg_contents = "DEVICE="+_dev+"\nBOOTPROTO=static";
int ip4=0,ip6=0,ip4_tot=0,ip6_tot=0;
long cpid = (long)vfork();
if (cpid == 0) {
OSUtils::redirectUnixOutputs("/dev/null",(const char *)0);
setenv("PATH", "/sbin:/bin:/usr/sbin:/usr/bin", 1);
// We must know if there is at least (one) of each protocol version so we
// can properly enumerate address/netmask combinations in the ifcfg-dev file
for(int i=0; i<(int)ips.size(); i++) {
if (ips[i].isV4())
ip4_tot++;
else
ip6_tot++;
for(int i=0; i<(int)ips.size(); i++) {
if (ips[i].isV4())
ip4_tot++;
else
ip6_tot++;
}
// Assemble and write contents of ifcfg-dev file
for(int i=0; i<(int)ips.size(); i++) {
if (ips[i].isV4()) {
char iptmp[64],iptmp2[64];
std::string numstr4 = ip4_tot > 1 ? std::to_string(ip4) : "";
cfg_contents += "\nIPADDR"+numstr4+"="+ips[i].toIpString(iptmp)
+ "\nNETMASK"+numstr4+"="+ips[i].netmask().toIpString(iptmp2)+"\n";
ip4++;
} else {
char iptmp[64],iptmp2[64];
std::string numstr6 = ip6_tot > 1 ? std::to_string(ip6) : "";
cfg_contents += "\nIPV6ADDR"+numstr6+"="+ips[i].toIpString(iptmp)
+ "\nNETMASK"+numstr6+"="+ips[i].netmask().toIpString(iptmp2)+"\n";
ip6++;
}
// Assemble and write contents of ifcfg-dev file
for(int i=0; i<(int)ips.size(); i++) {
if (ips[i].isV4()) {
char iptmp[64],iptmp2[64];
std::string numstr4 = ip4_tot > 1 ? std::to_string(ip4) : "";
cfg_contents += "\nIPADDR"+numstr4+"="+ips[i].toIpString(iptmp)
+ "\nNETMASK"+numstr4+"="+ips[i].netmask().toIpString(iptmp2)+"\n";
ip4++;
}
else {
char iptmp[64],iptmp2[64];
std::string numstr6 = ip6_tot > 1 ? std::to_string(ip6) : "";
cfg_contents += "\nIPV6ADDR"+numstr6+"="+ips[i].toIpString(iptmp)
+ "\nNETMASK"+numstr6+"="+ips[i].netmask().toIpString(iptmp2)+"\n";
ip6++;
}
}
OSUtils::writeFile(filepath.c_str(), cfg_contents.c_str(), cfg_contents.length());
// Finaly, add IPs
for(int i=0; i<(int)ips.size(); i++){
char iptmp[128],iptmp2[128];
if (ips[i].isV4())
::execlp("ip","ip","addr","add",ips[i].toString(iptmp),"broadcast",ips[i].broadcast().toIpString(iptmp2),"dev",_dev.c_str(),(const char *)0);
else
::execlp("ip","ip","addr","add",ips[i].toString(iptmp),"dev",_dev.c_str(),(const char *)0);
}
::_exit(-1);
} else if (cpid > 0) {
int exitcode = -1;
::waitpid(cpid,&exitcode,0);
return (exitcode == 0);
}
OSUtils::writeFile(filepath.c_str(), cfg_contents.c_str(), cfg_contents.length());
// Finaly, add IPs
for(int i=0; i<(int)ips.size(); i++){
LinuxNetLink::getInstance().addAddress(ips[i], _dev.c_str());
}
return true;
}
@ -348,24 +325,9 @@ bool LinuxEthernetTap::addIp(const InetAddress &ip)
___removeIp(_dev,*i);
}
long cpid = (long)vfork();
if (cpid == 0) {
OSUtils::redirectUnixOutputs("/dev/null",(const char *)0);
setenv("PATH", "/sbin:/bin:/usr/sbin:/usr/bin", 1);
char iptmp[128],iptmp2[128];
if (ip.isV4()) {
::execlp("ip","ip","addr","add",ip.toString(iptmp),"broadcast",ip.broadcast().toIpString(iptmp2),"dev",_dev.c_str(),(const char *)0);
} else {
::execlp("ip","ip","addr","add",ip.toString(iptmp),"dev",_dev.c_str(),(const char *)0);
}
::_exit(-1);
} else if (cpid > 0) {
int exitcode = -1;
::waitpid(cpid,&exitcode,0);
return (exitcode == 0);
}
LinuxNetLink::getInstance().addAddress(ip, _dev.c_str());
return false;
return true;
}
bool LinuxEthernetTap::removeIp(const InetAddress &ip)