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Imported Upstream version 1.2.4

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didyouexpectthat 2018-01-12 18:20:00 -08:00
commit 4722a0b75a
398 changed files with 38633 additions and 24919 deletions
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109
osdep/LinuxEthernetTap.cpp
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@ -62,7 +62,7 @@ LinuxEthernetTap::LinuxEthernetTap(
unsigned int metric,
uint64_t nwid,
const char *friendlyName,
void (*handler)(void *,uint64_t,const MAC &,const MAC &,unsigned int,unsigned int,const void *,unsigned int),
void (*handler)(void *,void *,uint64_t,const MAC &,const MAC &,unsigned int,unsigned int,const void *,unsigned int),
void *arg) :
_handler(handler),
_arg(arg),
@ -93,23 +93,40 @@ LinuxEthernetTap::LinuxEthernetTap(
memset(&ifr,0,sizeof(ifr));
// Try to recall our last device name, or pick an unused one if that fails.
bool recalledDevice = false;
std::string devmapbuf;
Dictionary<8194> devmap;
if (OSUtils::readFile((_homePath + ZT_PATH_SEPARATOR_S + "devicemap").c_str(),devmapbuf)) {
devmap.load(devmapbuf.c_str());
char desiredDevice[128];
if (devmap.get(nwids,desiredDevice,sizeof(desiredDevice)) > 0) {
Utils::scopy(ifr.ifr_name,sizeof(ifr.ifr_name),desiredDevice);
Utils::snprintf(procpath,sizeof(procpath),"/proc/sys/net/ipv4/conf/%s",ifr.ifr_name);
recalledDevice = (stat(procpath,&sbuf) != 0);
std::map<std::string,std::string> globalDeviceMap;
FILE *devmapf = fopen((_homePath + ZT_PATH_SEPARATOR_S + "devicemap").c_str(),"r");
if (devmapf) {
char buf[256];
while (fgets(buf,sizeof(buf),devmapf)) {
char *x = (char *)0;
char *y = (char *)0;
char *saveptr = (char *)0;
for(char *f=Utils::stok(buf,"\r\n=",&saveptr);(f);f=Utils::stok((char *)0,"\r\n=",&saveptr)) {
if (!x) x = f;
else if (!y) y = f;
else break;
}
if ((x)&&(y)&&(x[0])&&(y[0]))
globalDeviceMap[x] = y;
}
fclose(devmapf);
}
bool recalledDevice = false;
std::map<std::string,std::string>::const_iterator gdmEntry = globalDeviceMap.find(nwids);
if (gdmEntry != globalDeviceMap.end()) {
Utils::scopy(ifr.ifr_name,sizeof(ifr.ifr_name),gdmEntry->second.c_str());
Utils::snprintf(procpath,sizeof(procpath),"/proc/sys/net/ipv4/conf/%s",ifr.ifr_name);
recalledDevice = (stat(procpath,&sbuf) != 0);
}
if (!recalledDevice) {
int devno = 0;
do {
#ifdef __SYNOLOGY__
devno+=50; // Arbitrary number to prevent interface name conflicts
Utils::snprintf(ifr.ifr_name,sizeof(ifr.ifr_name),"eth%d",devno++);
#else
Utils::snprintf(ifr.ifr_name,sizeof(ifr.ifr_name),"zt%d",devno++);
#endif
Utils::snprintf(procpath,sizeof(procpath),"/proc/sys/net/ipv4/conf/%s",ifr.ifr_name);
} while (stat(procpath,&sbuf) == 0); // try zt#++ until we find one that does not exist
}
@ -174,9 +191,16 @@ LinuxEthernetTap::LinuxEthernetTap(
(void)::pipe(_shutdownSignalPipe);
devmap.erase(nwids);
devmap.add(nwids,_dev.c_str());
OSUtils::writeFile((_homePath + ZT_PATH_SEPARATOR_S + "devicemap").c_str(),(const void *)devmap.data(),devmap.sizeBytes());
globalDeviceMap[nwids] = _dev;
devmapf = fopen((_homePath + ZT_PATH_SEPARATOR_S + "devicemap").c_str(),"w");
if (devmapf) {
gdmEntry = globalDeviceMap.begin();
while (gdmEntry != globalDeviceMap.end()) {
fprintf(devmapf,"%s=%s\n",gdmEntry->first.c_str(),gdmEntry->second.c_str());
++gdmEntry;
}
fclose(devmapf);
}
_thread = Thread::start(this);
}
@ -215,6 +239,59 @@ static bool ___removeIp(const std::string &_dev,const InetAddress &ip)
}
}
#ifdef __SYNOLOGY__
bool LinuxEthernetTap::addIpSyn(std::vector<InetAddress> ips)
{
// Here we fill out interface config (ifcfg-dev) to prevent it from being killed
std::string filepath = "/etc/sysconfig/network-scripts/ifcfg-"+_dev;
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++;
}
// Assemble and write contents of ifcfg-dev file
for(int i=0; i<(int)ips.size(); i++) {
if (ips[i].isV4()) {
std::string numstr4 = ip4_tot > 1 ? std::to_string(ip4) : "";
cfg_contents += "\nIPADDR"+numstr4+"="+ips[i].toIpString()
+ "\nNETMASK"+numstr4+"="+ips[i].netmask().toIpString()+"\n";
ip4++;
}
else {
std::string numstr6 = ip6_tot > 1 ? std::to_string(ip6) : "";
cfg_contents += "\nIPV6ADDR"+numstr6+"="+ips[i].toIpString()
+ "\nNETMASK"+numstr6+"="+ips[i].netmask().toIpString()+"\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++){
if (ips[i].isV4())
::execlp("ip","ip","addr","add",ips[i].toString().c_str(),"broadcast",ips[i].broadcast().toIpString().c_str(),"dev",_dev.c_str(),(const char *)0);
else
::execlp("ip","ip","addr","add",ips[i].toString().c_str(),"dev",_dev.c_str(),(const char *)0);
}
::_exit(-1);
} else if (cpid > 0) {
int exitcode = -1;
::waitpid(cpid,&exitcode,0);
return (exitcode == 0);
}
return true;
}
#endif // __SYNOLOGY__
bool LinuxEthernetTap::addIp(const InetAddress &ip)
{
if (!ip)
@ -412,7 +489,7 @@ void LinuxEthernetTap::threadMain()
from.setTo(getBuf + 6,6);
unsigned int etherType = ntohs(((const uint16_t *)getBuf)[6]);
// TODO: VLAN support
_handler(_arg,_nwid,from,to,etherType,0,(const void *)(getBuf + 14),r - 14);
_handler(_arg,(void *)0,_nwid,from,to,etherType,0,(const void *)(getBuf + 14),r - 14);
}
r = 0;