source: binary-improvements/MapRendering/Web/API/GetLandClaims.cs@ 246

using AllocsFixes.JSON;
using AllocsFixes.PersistentData;
using System;
using System.Collections.Generic;
using System.Net;

namespace AllocsFixes.NetConnections.Servers.Web.API
{
        public class GetLandClaims : WebAPI
        {
                public override void HandleRequest (HttpListenerRequest req, HttpListenerResponse resp, WebConnection user, int permissionLevel)
                {
                        string steamid = string.Empty;

                        if (req.QueryString ["steamid"] != null) {
                                long tempLong;
                                steamid = req.QueryString ["steamid"];
                                if (steamid.Length != 17 || !long.TryParse (steamid, out tempLong)) {
                                        resp.StatusCode = (int)HttpStatusCode.BadRequest;
                                        Web.SetResponseTextContent (resp, "Invalid SteamID given");
                                        return;
                                }
                        }

                        JSONObject result = new JSONObject ();
                        result.Add ("claimsize", new JSONNumber (GamePrefs.GetInt (EnumGamePrefs.LandClaimSize)));

                        JSONArray claimOwners = new JSONArray ();
                        result.Add ("claimowners", claimOwners);

                        Dictionary<Vector3i, PersistentPlayerData> d = GameManager.Instance.GetPersistentPlayerList ().m_lpBlockMap;
                        if (d != null) {
                                World w = GameManager.Instance.World;
                                Dictionary<PersistentPlayerData, List<Vector3i>> owners = new Dictionary<PersistentPlayerData, List<Vector3i>> ();
                                foreach (KeyValuePair<Vector3i, PersistentPlayerData> kvp in d) {
                                        if (steamid.Length == 0 || kvp.Value.PlayerId.Equals (steamid)) {
                                                if (!owners.ContainsKey (kvp.Value)) {
                                                        owners.Add (kvp.Value, new List<Vector3i> ());
                                                }
                                                owners [kvp.Value].Add (kvp.Key);
                                        }
                                }

                                foreach (KeyValuePair<PersistentPlayerData, List<Vector3i>> kvp in owners) {
                                        if (steamid.Length == 0 || kvp.Key.PlayerId.Equals (steamid)) {
                                                string curID = kvp.Key.PlayerId;
                                                bool isActive = w.IsLandProtectionValidForPlayer (kvp.Key);

                                                JSONObject owner = new JSONObject ();
                                                claimOwners.Add (owner);

                                                owner.Add ("steamid", new JSONString (curID));
                                                owner.Add ("claimactive", new JSONBoolean (isActive));

                                                if (PersistentContainer.Instance.Players [curID, false] != null) {
                                                        owner.Add ("playername", new JSONString (PersistentContainer.Instance.Players [curID, false].Name));
                                                } else {
                                                        owner.Add ("playername", new JSONNull ());
                                                }

                                                JSONArray claims = new JSONArray ();
                                                owner.Add ("claims", claims);

                                                foreach (Vector3i v in kvp.Value) {
                                                        JSONObject claim = new JSONObject ();
                                                        claim.Add ("x", new JSONNumber (v.x));
                                                        claim.Add ("y", new JSONNumber (v.y));
                                                        claim.Add ("z", new JSONNumber (v.z));

                                                        claims.Add (claim);
                                                }
                                        }
                                }
                        }

                        WriteJSON (resp, result);
                }
        }
}