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package org.fox.ttrss;
import android.content.Context;
import android.content.SharedPreferences;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.preference.PreferenceManager;
import android.support.v4.content.AsyncTaskLoader;
import android.util.Base64;
import android.util.Log;
import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import org.fox.ttrss.ApiCommon.ApiError;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
public class ApiLoader extends AsyncTaskLoader<JsonElement> {
private final String TAG = this.getClass().getSimpleName();
public static final int API_STATUS_OK = 0;
public static final int API_STATUS_ERR = 1;
private String m_api;
private boolean m_transportDebugging = false;
protected int m_responseCode = 0;
protected String m_responseMessage;
protected int m_apiStatusCode = 0;
protected Context m_context;
private SharedPreferences m_prefs;
protected String m_lastErrorMessage;
protected ApiError m_lastError;
protected HashMap<String,String> m_params;
protected JsonElement m_data;
public ApiLoader(Context context, HashMap<String,String> params) {
super(context);
m_context = context;
m_prefs = PreferenceManager.getDefaultSharedPreferences(m_context);
m_api = m_prefs.getString("ttrss_url", "").trim();
m_transportDebugging = m_prefs.getBoolean("transport_debugging", false);
m_lastError = ApiError.NO_ERROR;
m_params = params;
}
@Override
protected void onStartLoading() {
if (m_data != null) {
deliverResult(m_data);
} else {
forceLoad();
}
}
@Override
public void deliverResult(JsonElement data) {
m_data = data;
super.deliverResult(data);
}
public int getErrorMessage() {
return ApiCommon.getErrorMessage(m_lastError);
}
public ApiError getLastError() {
return m_lastError;
}
public String getLastErrorMessage() {
return m_lastErrorMessage;
}
@Override
public JsonElement loadInBackground() {
if (!isNetworkAvailable()) {
m_lastError = ApiError.NETWORK_UNAVAILABLE;
return null;
}
Gson gson = new Gson();
String requestStr = gson.toJson(new HashMap<>(m_params));
byte[] postData = null;
try {
postData = requestStr.getBytes("UTF-8");
} catch (UnsupportedEncodingException e) {
m_lastError = ApiError.OTHER_ERROR;
e.printStackTrace();
return null;
}
if (m_transportDebugging) Log.d(TAG, ">>> (" + requestStr + ") " + m_api);
URL url;
try {
// canonicalize url just in case
URL baseUrl = new URL(m_api);
File f = new File(baseUrl.getPath() + "/api");
url = new URL(baseUrl, f.getCanonicalPath() + "/");
} catch (Exception e) {
m_lastError = ApiError.INVALID_URL;
e.printStackTrace();
return null;
}
try {
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
String httpLogin = m_prefs.getString("http_login", "").trim();
String httpPassword = m_prefs.getString("http_password", "").trim();
if (httpLogin.length() > 0) {
if (m_transportDebugging) Log.d(TAG, "Using HTTP Basic authentication.");
conn.setRequestProperty("Authorization", "Basic " +
Base64.encodeToString((httpLogin + ":" + httpPassword).getBytes("UTF-8"), Base64.NO_WRAP));
}
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Length", Integer.toString(postData.length));
OutputStream out = conn.getOutputStream();
out.write(postData);
out.close();
m_responseCode = conn.getResponseCode();
m_responseMessage = conn.getResponseMessage();
switch (m_responseCode) {
case HttpURLConnection.HTTP_OK:
StringBuffer response = new StringBuffer();
InputStreamReader in = new InputStreamReader(conn.getInputStream(), "UTF-8");
char[] buf = new char[256];
int read = 0;
while ((read = in.read(buf)) >= 0) {
response.append(buf, 0, read);
}
if (m_transportDebugging) Log.d(TAG, "<<< " + response);
JsonParser parser = new JsonParser();
JsonElement result = parser.parse(response.toString());
JsonObject resultObj = result.getAsJsonObject();
m_apiStatusCode = resultObj.get("status").getAsInt();
conn.disconnect();
switch (m_apiStatusCode) {
case API_STATUS_OK:
return result.getAsJsonObject().get("content");
case API_STATUS_ERR:
JsonObject contentObj = resultObj.get("content").getAsJsonObject();
String error = contentObj.get("error").getAsString();
if (error.equals("LOGIN_ERROR")) {
m_lastError = ApiError.LOGIN_FAILED;
} else if (error.equals("API_DISABLED")) {
m_lastError = ApiError.API_DISABLED;
} else if (error.equals("NOT_LOGGED_IN")) {
m_lastError = ApiError.LOGIN_FAILED;
} else if (error.equals("INCORRECT_USAGE")) {
m_lastError = ApiError.API_INCORRECT_USAGE;
} else if (error.equals("UNKNOWN_METHOD")) {
m_lastError = ApiError.API_UNKNOWN_METHOD;
} else {
Log.d(TAG, "Unknown API error: " + error);
m_lastError = ApiError.API_UNKNOWN;
}
}
return null;
case HttpURLConnection.HTTP_UNAUTHORIZED:
m_lastError = ApiError.HTTP_UNAUTHORIZED;
break;
case HttpURLConnection.HTTP_FORBIDDEN:
m_lastError = ApiError.HTTP_FORBIDDEN;
break;
case HttpURLConnection.HTTP_NOT_FOUND:
m_lastError = ApiError.HTTP_NOT_FOUND;
break;
case HttpURLConnection.HTTP_INTERNAL_ERROR:
m_lastError = ApiError.HTTP_SERVER_ERROR;
break;
default:
Log.d(TAG, "HTTP response code: " + m_responseCode + "(" + m_responseMessage + ")");
m_lastError = ApiError.HTTP_OTHER_ERROR;
break;
}
conn.disconnect();
return null;
} catch (javax.net.ssl.SSLPeerUnverifiedException e) {
m_lastError = ApiError.SSL_REJECTED;
m_lastErrorMessage = e.getMessage();
e.printStackTrace();
} catch (IOException e) {
m_lastError = ApiError.IO_ERROR;
m_lastErrorMessage = e.getMessage();
if (e.getMessage() != null) {
if (e.getMessage().matches("Hostname [^ ]+ was not verified")) {
m_lastError = ApiError.SSL_HOSTNAME_REJECTED;
}
}
e.printStackTrace();
} catch (com.google.gson.JsonSyntaxException e) {
m_lastError = ApiError.PARSE_ERROR;
m_lastErrorMessage = e.getMessage();
e.printStackTrace();
} catch (Exception e) {
m_lastError = ApiError.OTHER_ERROR;
m_lastErrorMessage = e.getMessage();
e.printStackTrace();
}
return null;
}
protected boolean isNetworkAvailable() {
ConnectivityManager cm = (ConnectivityManager)
m_context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = cm.getActiveNetworkInfo();
// if no network is available networkInfo will be null
// otherwise check if we are connected
if (networkInfo != null && networkInfo.isConnected()) {
return true;
}
return false;
}
}
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