Implement server authentication methods
This commit is contained in:
Trever Fischer
parent
e3d99bf687
commit
eb054d7179
@ -20,27 +20,87 @@ package us.camin.api;
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import java.io.BufferedReader;
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import java.io.BufferedInputStream;
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import java.io.DataOutputStream;
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import java.io.InputStreamReader;
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import java.io.IOException;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.ProtocolException;
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import java.net.URL;
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import java.net.URLEncoder;
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import java.util.logging.Logger;
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import java.util.logging.Level;
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import java.util.Scanner;
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import java.util.Set;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Iterator;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import org.json.JSONArray;
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import org.json.JSONObject;
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import org.json.JSONException;
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import java.util.Random;
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import org.apache.commons.codec.binary.Hex;
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public class Server {
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Logger log = Logger.getLogger("Caminus.API");
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private String m_url;
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private String m_name;
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private String m_secret;
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public ValidationResponse validatePlayer(String name) throws IOException {
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ValidationResponse resp = new ValidationResponse();
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URL authServer = new URL(m_url+"validate/"+name);
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log.info("Authing "+name+" against "+authServer);
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private String genToken() {
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Random r = new Random();
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int salt = r.nextInt();
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MessageDigest crypt;
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try {
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crypt = MessageDigest.getInstance("SHA-1");
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} catch (NoSuchAlgorithmException e) {
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log.warning("Could not find SHA-1 algorithm");
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return "";
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}
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crypt.reset();
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String token = m_name+salt+m_secret;
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crypt.update(token.getBytes());
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token = m_name+"$"+salt+"$"+Hex.encodeHexString(crypt.digest());
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log.info("Generated token "+token+" from "+m_name+salt+m_secret);
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return token;
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}
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public JSONObject exec(String path, String method, HashMap<String, String> params) throws MalformedURLException, ProtocolException, IOException {
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HttpURLConnection conn = open(path);
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conn.setRequestMethod(method);
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if (params.size() > 0) {
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conn.setDoOutput(true);
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DataOutputStream out = new DataOutputStream(conn.getOutputStream());
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Set<Map.Entry<String, String>> values = params.entrySet();
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Iterator<Map.Entry<String, String>> it = values.iterator();
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StringBuilder sb = new StringBuilder();
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while(it.hasNext()) {
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Map.Entry<String, String> param = it.next();
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sb.append(URLEncoder.encode(param.getKey(), "UTF-8"));
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sb.append("=");
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sb.append(URLEncoder.encode(param.getValue(), "UTF-8"));
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sb.append("&");
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}
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String postData = sb.substring(0, sb.length()-1);
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conn.setFixedLengthStreamingMode(postData.length());
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conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
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out.writeBytes(postData);
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}
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return readJSON(conn);
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}
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public HttpURLConnection open(String path) throws MalformedURLException, IOException {
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URL authServer = new URL(m_url+path);
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HttpURLConnection conn = (HttpURLConnection)authServer.openConnection();
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conn.setRequestProperty("Authorization", "X-Caminus "+genToken());
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return conn;
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}
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public JSONObject readJSON(HttpURLConnection conn) throws IOException {
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BufferedInputStream in = new BufferedInputStream(conn.getInputStream());
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String jsonStr;
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try {
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@ -51,9 +111,38 @@ public class Server {
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in.close();
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try {
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JSONObject jsonObj = new JSONObject(jsonStr);
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resp.valid = jsonObj.optBoolean("valid");
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if (!resp.valid)
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return resp;
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return jsonObj;
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} catch (JSONException e) {
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throw new IOException("JSON parse error", e);
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}
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}
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// Convienence methods
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public JSONObject exec(String path, String method) throws MalformedURLException, ProtocolException, IOException {
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return exec(path, method, new HashMap<String, String>());
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}
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public JSONObject get(String path) throws IOException {
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return exec(path, "GET");
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}
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public JSONObject put(String path, HashMap<String, String> params) throws MalformedURLException, IOException {
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try {
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return exec(path, "PUT", params);
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} catch (ProtocolException e) {
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return null;
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}
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}
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public ValidationResponse validatePlayer(String name) throws IOException {
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log.info("Validating "+name+" against "+m_url);
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ValidationResponse resp = new ValidationResponse();
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JSONObject jsonObj = get("validate/"+name);
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resp.valid = jsonObj.optBoolean("valid");
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if (!resp.valid)
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return resp;
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try {
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JSONArray perms = jsonObj.getJSONArray("permissions");
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resp.permissions = new String[perms.length()];
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for (int i = 0;i<perms.length();i++) {
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@ -62,6 +151,7 @@ public class Server {
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} catch (JSONException e) {
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throw new IOException("JSON parse error", e);
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}
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return resp;
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}
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@ -73,22 +163,19 @@ public class Server {
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m_url = url;
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}
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public void setServerName(String name) {
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m_name = name;
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}
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public void setServerSecret(String secret) {
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m_secret = secret;
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}
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public String[] fetchMOTD(String user) throws IOException {
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URL motdService = new URL(m_url+"motd/"+user);
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log.info("Fetching MOTD for "+user+" from "+motdService);
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HttpURLConnection conn = (HttpURLConnection)motdService.openConnection();
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BufferedInputStream in = new BufferedInputStream(conn.getInputStream());
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String jsonStr;
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// Stupid scanner trick. \A means "beginning of input boundary".
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try {
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jsonStr = new java.util.Scanner(in).useDelimiter("\\A").next();
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} catch (java.util.NoSuchElementException e) {
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jsonStr = "";
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}
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in.close();
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log.info("Fetching motd for "+user);
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String[] ret = new String[0];
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JSONObject jsonObj = get("motd/"+user);
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try {
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JSONObject jsonObj = new JSONObject(jsonStr);
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JSONArray motd = jsonObj.getJSONArray("motd");
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ret = new String[motd.length()];
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for (int i = 0;i<motd.length();i++) {
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@ -99,4 +186,33 @@ public class Server {
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}
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return ret;
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}
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public double getBalance(String player) throws IOException {
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log.info("Fetching balance for "+player);
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JSONObject jsonObj = get("server/economy/"+player);
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return jsonObj.optDouble("balance", 0);
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}
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public BalanceAdjustResponse adjustBalance(String player, double delta) throws IOException {
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log.info("Adjusting balance for "+player+" by "+delta);
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HashMap<String, String> params = new HashMap<String, String>();
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params.put("delta", ""+delta);
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JSONObject jsonObj = put("server/economy/"+player, params);
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BalanceAdjustResponse resp = new BalanceAdjustResponse();
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resp.success = jsonObj.optBoolean("success", false);
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resp.newBalance = jsonObj.optDouble("balance", 0);
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resp.message = jsonObj.optString("message", "");
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return resp;
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}
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public boolean pingAPI() {
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log.info("Pinging API server to verify credentials");
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try {
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get("server/whoami");
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} catch (IOException e) {
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log.log(Level.SEVERE, "Could not ping API server.", e);
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return false;
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}
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return true;
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}
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}
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