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add/remove routes via rtnetlink

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This commit is contained in:
Grant Limberg 2018-05-25 14:18:06 -07:00
commit be469f4dd0
4 changed files with 538 additions and 359 deletions
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41
osdep/ManagedRoute.cpp
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@ -54,6 +54,7 @@
#include <asm/types.h>
#include <linux/rtnetlink.h>
#include <sys/socket.h>
#include "../osdep/LinuxNetLink.hpp"
#endif
#ifdef __BSD__
#include <net/if_dl.h>
@ -284,44 +285,14 @@ static void _routeCmd(const char *op,const InetAddress &target,const InetAddress
#ifdef __LINUX__ // ----------------------------------------------------------
#define ZT_ROUTING_SUPPORT_FOUND 1
static bool _hasRoute(const InetAddress &target, const InetAddress &via, const char *localInterface)
{
if (target.ss_family == AF_INET) {
int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
char *buf;
int nll;
struct rtmsg *rtp;
int rtl;
struct rtattr *rtap;
struct sockaddr_nl la;
bzero(&la, sizeof(la));
la.nl_family = AF_NETLINK;
la.nl_pad = 0;
la.nl_pid = (uint32_t)((ptrdiff_t)&target % getpid());
la.nl_groups = 0;
int rtn = bind(fd, (struct sockaddr*)&la, sizeof(la));
close(fd);
return false;
} else {
return false;
}
}
static void _routeCmd(const char *op, const InetAddress &target, const InetAddress &via, const char *localInterface)
{
bool hasRoute = _hasRoute(target, via, localInterface);
if (hasRoute && (strcmp(op, "add") == 0 || strcmp(op, "replace") == 0)) {
return;
} else if (!hasRoute && (strcmp(op, "remove") == 0 || strcmp(op, "del") == 0)) {
return;
if ((strcmp(op, "add") == 0 || strcmp(op, "replace") == 0)) {
LinuxNetLink::getInstance().addRoute(target, via, localInterface);
} else if ((strcmp(op, "remove") == 0 || strcmp(op, "del") == 0)) {
LinuxNetLink::getInstance().delRoute(target, via, localInterface);
}
return;
char targetStr[64] = {0};
char viaStr[64] = {0};