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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.util.Log;
import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import java.io.IOException;
import java.util.HashMap;
import androidx.annotation.NonNull;
import okhttp3.Credentials;
import okhttp3.MediaType;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
public class ApiCommon {
public static final String TAG = "ApiCommon";
private static final int API_STATUS_OK = 0;
private static final int API_STATUS_ERR = 1;
private static final MediaType TYPE_JSON = MediaType.parse("application/json; charset=utf-8");
public interface ApiCaller {
void setStatusCode(int statusCode);
void setLastError(ApiError lastError);
void setLastErrorMessage(String message);
}
public enum ApiError { NO_ERROR, HTTP_UNAUTHORIZED, HTTP_FORBIDDEN, HTTP_NOT_FOUND,
HTTP_SERVER_ERROR, HTTP_OTHER_ERROR, SSL_REJECTED, SSL_HOSTNAME_REJECTED, PARSE_ERROR, IO_ERROR, OTHER_ERROR, API_DISABLED,
API_UNKNOWN, LOGIN_FAILED, INVALID_URL, API_INCORRECT_USAGE, NETWORK_UNAVAILABLE, API_UNKNOWN_METHOD }
public static int getErrorMessage(ApiError error) {
switch (error) {
case NO_ERROR:
return R.string.error_unknown;
case HTTP_UNAUTHORIZED:
return R.string.error_http_unauthorized;
case HTTP_FORBIDDEN:
return R.string.error_http_forbidden;
case HTTP_NOT_FOUND:
return R.string.error_http_not_found;
case HTTP_SERVER_ERROR:
return R.string.error_http_server_error;
case HTTP_OTHER_ERROR:
return R.string.error_http_other_error;
case SSL_REJECTED:
return R.string.error_ssl_rejected;
case SSL_HOSTNAME_REJECTED:
return R.string.error_ssl_hostname_rejected;
case PARSE_ERROR:
return R.string.error_parse_error;
case IO_ERROR:
return R.string.error_io_error;
case OTHER_ERROR:
return R.string.error_other_error;
case API_DISABLED:
return R.string.error_api_disabled;
case API_UNKNOWN:
return R.string.error_api_unknown;
case API_UNKNOWN_METHOD:
return R.string.error_api_unknown_method;
case LOGIN_FAILED:
return R.string.error_login_failed;
case INVALID_URL:
return R.string.error_invalid_api_url;
case API_INCORRECT_USAGE:
return R.string.error_api_incorrect_usage;
case NETWORK_UNAVAILABLE:
return R.string.error_network_unavailable;
default:
Log.d(TAG, "getErrorMessage: unknown error code=" + error);
return R.string.error_unknown;
}
}
static boolean isNetworkAvailable(Context context) {
ConnectivityManager cm = (ConnectivityManager)
context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = cm.getActiveNetworkInfo();
// if no network is available networkInfo will be null
// otherwise check if we are connected
return networkInfo != null && networkInfo.isConnected();
}
static JsonElement performRequest(Context context, @NonNull HashMap<String, String> m_params,
@NonNull ApiCommon.ApiCaller caller) {
try {
if (!ApiCommon.isNetworkAvailable(context)) {
caller.setLastError(ApiError.NETWORK_UNAVAILABLE);
return null;
}
SharedPreferences m_prefs = PreferenceManager.getDefaultSharedPreferences(context);
boolean m_transportDebugging = m_prefs.getBoolean("transport_debugging", false);
Gson gson = new Gson();
String payload = gson.toJson(new HashMap<>(m_params));
String apiUrl = m_prefs.getString("ttrss_url", "").trim() + "/api/";
if (m_transportDebugging) Log.d(TAG, ">>> " + payload + " -> " + apiUrl);
Request.Builder requestBuilder = new Request.Builder()
.url(apiUrl)
.post(RequestBody.create(TYPE_JSON, payload));
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.");
requestBuilder.addHeader("Authorization", Credentials.basic(httpLogin, httpPassword));
}
Request request = requestBuilder.build();
Response response = new OkHttpClient()
.newCall(request)
.execute();
if (response.isSuccessful()) {
String payloadReceived = response.body().string();
if (m_transportDebugging) Log.d(TAG, "<<< " + payloadReceived);
JsonParser parser = new JsonParser();
JsonElement result = parser.parse(payloadReceived);
JsonObject resultObj = result.getAsJsonObject();
int statusCode = resultObj.get("status").getAsInt();
caller.setStatusCode(statusCode);
switch (statusCode) {
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();
switch (error) {
case "LOGIN_ERROR":
case "NOT_LOGGED_IN":
caller.setLastError(ApiError.LOGIN_FAILED);
break;
case "API_DISABLED":
caller.setLastError(ApiError.API_DISABLED);
break;
case "INCORRECT_USAGE":
caller.setLastError(ApiError.API_INCORRECT_USAGE);
break;
case "UNKNOWN_METHOD":
caller.setLastError(ApiError.API_UNKNOWN_METHOD);
break;
default:
Log.d(TAG, "Unknown API error: " + error);
caller.setLastError(ApiError.API_UNKNOWN);
break;
}
}
} else {
switch (response.code()) {
case 401:
caller.setLastError(ApiError.HTTP_UNAUTHORIZED);
break;
case 403:
caller.setLastError(ApiError.HTTP_FORBIDDEN);
break;
case 404:
caller.setLastError(ApiError.HTTP_NOT_FOUND);
break;
case 500:
case 501:
caller.setLastError(ApiError.HTTP_SERVER_ERROR);
break;
default:
Log.d(TAG, "HTTP response code: " + response.code());
caller.setLastError(ApiError.HTTP_OTHER_ERROR);
break;
}
}
return null;
} catch (javax.net.ssl.SSLPeerUnverifiedException e) {
caller.setLastError(ApiError.SSL_REJECTED);
caller.setLastErrorMessage(e.getMessage());
e.printStackTrace();
} catch (IOException e) {
caller.setLastError(ApiError.IO_ERROR);
caller.setLastErrorMessage(e.getMessage());
if (e.getMessage() != null) {
if (e.getMessage().matches("Hostname [^ ]+ was not verified")) {
caller.setLastError(ApiError.SSL_HOSTNAME_REJECTED);
}
}
e.printStackTrace();
} catch (com.google.gson.JsonSyntaxException e) {
caller.setLastError(ApiError.PARSE_ERROR);
caller.setLastErrorMessage(e.getMessage());
e.printStackTrace();
} catch (Exception e) {
caller.setLastError(ApiError.OTHER_ERROR);
caller.setLastErrorMessage(e.getMessage());
e.printStackTrace();
}
return null;
}
}
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