mirror of
https://github.com/oxen-io/lokinet.git
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871c3e3281
* wintun vpn platform for windows
* bundle config snippets into nsis installer for exit node, keyfile persisting, reduced hops mode.
* use wintun for vpn platform
* isolate all windows platform specific code into their own compilation units and libraries
* split up internal libraries into more specific components
* rename liblokinet.a target to liblokinet-amalgum.a to elimiate ambiguity with liblokinet.so
* DNS platform for win32
* rename llarp/ev/ev_libuv.{c,h}pp to llarp/ev/libuv.{c,h}pp as the old name was idiotic
* split up net platform into win32 and posix specific compilation units
* rename lokinet_init.c to easter_eggs.cpp as that is what they are for and it does not need to be a c compilation target
* add cmake option STRIP_SYMBOLS for seperating out debug symbols for windows builds
* intercept dns traffic on all interfaces on windows using windivert and feed it into lokinet
129 lines
4.1 KiB
C++
129 lines
4.1 KiB
C++
#ifdef WITH_SYSTEMD
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#include "sd_platform.hpp"
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extern "C"
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{
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#include <net/if.h>
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}
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#include <llarp/linux/dbus.hpp>
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using namespace std::literals;
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namespace llarp::dns::sd
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{
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void
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Platform::set_resolver(unsigned int if_ndx, llarp::SockAddr dns, bool global)
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{
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linux::DBUS _dbus{
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"org.freedesktop.resolve1",
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"/org/freedesktop/resolve1",
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"org.freedesktop.resolve1.Manager"};
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// This passing address by bytes and using two separate calls for ipv4/ipv6 is gross, but
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// the alternative is to build up a bunch of crap with va_args, which is slightly more
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// gross.
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const bool isStandardDNSPort = dns.getPort() == 53;
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if (dns.isIPv6())
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{
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auto ipv6 = dns.getIPv6();
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static_assert(sizeof(ipv6) == 16);
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auto* a = reinterpret_cast<const uint8_t*>(&ipv6);
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if (isStandardDNSPort)
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{
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_dbus(
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"SetLinkDNS",
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"ia(iay)",
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(int32_t)if_ndx,
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(int)1, // number of "iayqs"s we are passing
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(int32_t)AF_INET6, // network address type
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(int)16, // network addr byte size
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// clang-format off
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a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7],
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a[8], a[9], a[10], a[11], a[12], a[13], a[14], a[15] // yuck
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// clang-format on
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);
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}
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else
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{
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_dbus(
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"SetLinkDNSEx",
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"ia(iayqs)",
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(int32_t)if_ndx,
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(int)1, // number of "iayqs"s we are passing
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(int32_t)AF_INET6, // network address type
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(int)16, // network addr byte size
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// clang-format off
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a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7],
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a[8], a[9], a[10], a[11], a[12], a[13], a[14], a[15], // yuck
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// clang-format on
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(uint16_t)dns.getPort(),
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nullptr // dns server name (for TLS SNI which we don't care about)
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);
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}
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}
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else
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{
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auto ipv4 = dns.getIPv4();
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static_assert(sizeof(ipv4) == 4);
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auto* a = reinterpret_cast<const uint8_t*>(&ipv4);
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if (isStandardDNSPort)
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{
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_dbus(
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"SetLinkDNS",
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"ia(iay)",
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(int32_t)if_ndx,
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(int)1, // number of "iayqs"s we are passing
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(int32_t)AF_INET, // network address type
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(int)4, // network addr byte size
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// clang-format off
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a[0], a[1], a[2], a[3] // yuck
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// clang-format on
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);
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}
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else
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{
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_dbus(
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"SetLinkDNSEx",
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"ia(iayqs)",
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(int32_t)if_ndx,
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(int)1, // number of "iayqs"s we are passing
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(int32_t)AF_INET, // network address type
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(int)4, // network addr byte size
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// clang-format off
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a[0], a[1], a[2], a[3], // yuck
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// clang-format on
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(uint16_t)dns.getPort(),
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nullptr // dns server name (for TLS SNI which we don't care about)
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);
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}
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}
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if (global)
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// Setting "." as a routing domain gives this DNS server higher priority in resolution
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// compared to dns servers that are set without a domain (e.g. the default for a
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// DHCP-configured DNS server)
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_dbus(
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"SetLinkDomains",
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"ia(sb)",
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(int32_t)if_ndx,
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(int)1, // array size
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"." // global DNS root
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);
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else
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// Only resolve .loki and .snode through lokinet (so you keep using your local DNS
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// server for everything else, which is nicer than forcing everything though lokinet's
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// upstream DNS).
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_dbus(
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"SetLinkDomains",
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"ia(sb)",
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(int32_t)if_ndx,
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(int)2, // array size
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"loki", // domain
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(int)1, // routing domain = true
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"snode", // domain
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(int)1 // routing domain = true
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);
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}
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} // namespace llarp::dns::sd
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#endif
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