add exit auth token awareness to config

llarp/config/config.cpp

@@ -212,6 +212,26 @@ namespace llarp
       m_Paths = arg;
     });
 
+    conf.defineOption<std::string>("network", "exit-auth", false, "", [this](std::string arg) {
+      if (arg.empty())
+        return;
+      service::Address exit;
+      service::AuthInfo auth;
+      const auto pos = arg.find(":");
+      if (pos == std::string::npos)
+      {
+        throw std::invalid_argument(
+            "[network]:exit-auth invalid format, expects exit-address.loki:auth-code-goes-here");
+      }
+      const auto exit_str = arg.substr(0, pos);
+      auth.token = arg.substr(pos + 1);
+      if (not exit.FromString(exit_str))
+      {
+        throw std::invalid_argument("[network]:exit-auth invalid exit address");
+      }
+      m_ExitAuths.emplace(exit, auth);
+    });
+
     conf.defineOption<std::string>("network", "exit-node", false, "", [this](std::string arg) {
       if (arg.empty())
         return;

llarp/config/config.hpp

@@ -85,6 +85,7 @@ namespace llarp
     bool m_AllowExit = false;
     std::set<RouterID> m_snodeBlacklist;
     net::IPRangeMap<service::Address> m_ExitMap;
+    std::unordered_map<service::Address, service::AuthInfo, service::Address::Hash> m_ExitAuths;
     std::unordered_map<huint128_t, service::Address> m_mapAddrs;
 
     service::AuthType m_AuthType = service::AuthType::eAuthTypeNone;

llarp/service/endpoint.cpp

@@ -54,6 +54,11 @@ namespace llarp
       conf.m_ExitMap.ForEachEntry(
           [&](const IPRange& range, const service::Address& addr) { MapExitRange(range, addr); });
 
+      for (auto [exit, auth] : conf.m_ExitAuths)
+      {
+        SetAuthInfoForEndpoint(exit, auth);
+      }
+
       return m_state->Configure(conf);
     }