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lokinet
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initial windows platform specific bits for lokinet-vpn

This commit is contained in:
Jeff Becker 2020-08-10 11:06:51 -04:00
parent 37e16291cb
commit 22e4aef4f9
No known key found for this signature in database
GPG Key ID: F357B3B42F6F9B05
1 changed files with 56 additions and 11 deletions
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67
daemon/lokinet-vpn.cpp
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@ -4,6 +4,17 @@
#include <future>
#include <vector>
#ifdef _WIN32
// add the unholy windows headers for iphlpapi
#include <winsock2.h>
#include <ws2tcpip.h>
#include <iphlpapi.h>
#include <stdio.h>
#pragma comment(lib, "iphlpapi.lib")
#pragma comment(lib, "ws2_32.lib")
#endif
/// do a lokimq request on an lmq instance blocking style
/// returns a json object parsed from the result
std::optional<nlohmann::json>
@ -252,11 +263,13 @@ AddRoute(std::string ip, std::string gateway)
std::stringstream ss;
#ifdef __linux__
ss << "ip route add " << ip << "/32 via " << gateway;
const auto cmd_str = ss.str();
system(cmd_str.c_str());
#elif _WIN32
ss << "route ADD " << ip << " MASK 255.255.255.255 " << gateway;
#else
#error unsupported platform
#endif
const auto cmd_str = ss.str();
system(cmd_str.c_str());
}
void
@ -265,11 +278,13 @@ DelRoute(std::string ip, std::string gateway)
std::stringstream ss;
#ifdef __linux__
ss << "ip route del " << ip << "/32 via " << gateway;
const auto cmd_str = ss.str();
system(cmd_str.c_str());
#elif _WIN32
ss << "route DELETE " << ip << " MASK 255.255.255.255 " << gateway;
#else
#error unsupported platform
#endif
const auto cmd_str = ss.str();
system(cmd_str.c_str());
}
void
@ -278,11 +293,13 @@ AddDefaultRouteViaInterface(std::string ifname)
std::stringstream ss;
#ifdef __linux__
ss << "ip route add default dev " << ifname;
const auto cmd_str = ss.str();
system(cmd_str.c_str());
#elif _WIN32
ss << "route ADD 0.0.0.0 MASK 0.0.0.0 " << ifname;
#else
#error unsupported platform
#endif
const auto cmd_str = ss.str();
system(cmd_str.c_str());
}
void
@ -291,22 +308,23 @@ DelDefaultRouteViaInterface(std::string ifname)
std::stringstream ss;
#ifdef __linux__
ss << "ip route del default dev " << ifname;
const auto cmd_str = ss.str();
system(cmd_str.c_str());
#elif _WIN32
ss << "route DELETE 0.0.0.0 MASK 0.0.0.0 " << ifname;
#else
#error unsupported platform
#endif
const auto cmd_str = ss.str();
system(cmd_str.c_str());
}
std::vector<std::string>
GetGatewaysNotOnInterface(std::string ifname)
{
std::vector<std::string> gateways;
#ifdef __linux__
FILE* p = popen("ip route", "r");
if (p == nullptr)
return {};
std::vector<std::string> gateways;
return gateways;
char* line = nullptr;
size_t len = 0;
ssize_t read = 0;
@ -326,6 +344,33 @@ GetGatewaysNotOnInterface(std::string ifname)
}
pclose(p);
return gateways;
#elif _WIN32
#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
PMIB_IPFORWARDTABLE pIpForwardTable;
pIpForwardTable = (MIB_IPFORWARDTABLE*)MALLOC(sizeof(MIB_IPFORWARDTABLE));
if (pIpForwardTable == nullptr)
return gateways;
if ((dwRetVal = GetIpForwardTable(pIpForwardTable, &dwSize, 0)) != NO_ERROR)
{
FREE(pIpForwardTable);
return gateways;
}
for (int i = 0; i < (int)pIpForwardTable->dwNumEntries; i++)
{
in_addr gateway;
gateway.S_un.S_addr = (u_long)pIpForwardTable->table[i].dwForwardDest;
if (!gateway.S_un.S_addr)
{
std::array<char, 128> gateway_str{};
strcpy_s(gateway_str.data(), gateway_str.size(), inet_ntoa(gateway));
gateways.emplace_back(gateway_str);
}
}
#undef MALLOC
#undef FREE
return gateways;
#else
#error unsupported platform
#endif