diff options
Diffstat (limited to 'src/se/leap/leapclient/ProviderAPI.java')
| -rw-r--r-- | src/se/leap/leapclient/ProviderAPI.java | 733 |
1 files changed, 0 insertions, 733 deletions
diff --git a/src/se/leap/leapclient/ProviderAPI.java b/src/se/leap/leapclient/ProviderAPI.java deleted file mode 100644 index 944a0e7f..00000000 --- a/src/se/leap/leapclient/ProviderAPI.java +++ /dev/null @@ -1,733 +0,0 @@ -/** - * Copyright (c) 2013 LEAP Encryption Access Project and contributers - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - package se.leap.leapclient; - -import java.io.ByteArrayInputStream; -import java.io.IOException; -import java.io.InputStream; -import java.math.BigInteger; -import java.security.KeyManagementException; -import java.security.KeyStore; -import java.security.KeyStoreException; -import java.security.NoSuchAlgorithmException; -import java.security.cert.CertificateException; -import java.security.cert.CertificateFactory; -import java.security.cert.X509Certificate; -import java.security.SecureRandom; -import javax.net.ssl.KeyManager; -import java.net.CookieHandler; -import java.net.CookieManager; -import java.net.HttpCookie; -import java.net.MalformedURLException; -import java.net.SocketTimeoutException; -import java.net.URISyntaxException; -import java.net.URL; -import java.net.URLConnection; -import java.net.UnknownHostException; -import java.util.Scanner; - -import javax.net.ssl.HostnameVerifier; -import javax.net.ssl.HttpsURLConnection; -import javax.net.ssl.SSLContext; -import javax.net.ssl.SSLSession; -import javax.net.ssl.TrustManagerFactory; -import javax.net.ssl.TrustManager; -import javax.net.ssl.X509TrustManager; - -import org.apache.http.HttpEntity; -import org.apache.http.HttpResponse; -import org.apache.http.client.ClientProtocolException; -import org.apache.http.client.methods.HttpDelete; -import org.apache.http.client.methods.HttpPost; -import org.apache.http.client.methods.HttpPut; -import org.apache.http.client.methods.HttpUriRequest; -import org.apache.http.client.protocol.ClientContext; -import org.apache.http.cookie.Cookie; -import org.apache.http.impl.client.DefaultHttpClient; -import org.apache.http.protocol.BasicHttpContext; -import org.apache.http.protocol.HttpContext; -import org.jboss.security.srp.SRPParameters; -import org.json.JSONException; -import org.json.JSONObject; - -import se.leap.leapclient.ProviderListContent.ProviderItem; - -import android.app.IntentService; -import android.content.Intent; -import android.os.Bundle; -import android.os.Handler; -import android.os.ResultReceiver; -import android.util.Base64; -import android.util.Log; -import android.widget.Toast; - -/** - * Implements HTTP api methods used to manage communications with the provider server. - * - * It's an IntentService because it downloads data from the Internet, so it operates in the background. - * - * @author parmegv - * @author MeanderingCode - * - */ -public class ProviderAPI extends IntentService { - - private Handler mHandler; - - public ProviderAPI() { - super("ProviderAPI"); - Log.v("ClassName", "Provider API"); - } - - @Override - public void onCreate() { - super.onCreate(); - mHandler = new Handler(); - } - - private void displayToast(final int toast_string_id) { - mHandler.post(new Runnable() { - - @Override - public void run() { - Toast.makeText(ProviderAPI.this, toast_string_id, Toast.LENGTH_LONG).show(); - } - }); - } - - @Override - protected void onHandleIntent(Intent task_for) { - final ResultReceiver receiver = task_for.getParcelableExtra("receiver"); - - Bundle task; - if((task = task_for.getBundleExtra(ConfigHelper.DOWNLOAD_JSON_FILES_BUNDLE_EXTRA)) != null) { - if(!downloadJsonFiles(task)) { - receiver.send(ConfigHelper.INCORRECTLY_DOWNLOADED_JSON_FILES, Bundle.EMPTY); - } else { - receiver.send(ConfigHelper.CORRECTLY_DOWNLOADED_JSON_FILES, Bundle.EMPTY); - } - } - else if ((task = task_for.getBundleExtra(ConfigHelper.UPDATE_PROVIDER_DOTJSON)) != null) { - Bundle result = updateProviderDotJSON(task); - if(result.getBoolean(ConfigHelper.RESULT_KEY)) { - receiver.send(ConfigHelper.CORRECTLY_UPDATED_PROVIDER_DOT_JSON, result); - } else { - receiver.send(ConfigHelper.INCORRECTLY_UPDATED_PROVIDER_DOT_JSON, Bundle.EMPTY); - } - } - else if ((task = task_for.getBundleExtra(ConfigHelper.DOWNLOAD_NEW_PROVIDER_DOTJSON)) != null) { - Bundle result = downloadNewProviderDotJSON(task); - if(result.getBoolean(ConfigHelper.RESULT_KEY)) { - receiver.send(ConfigHelper.CORRECTLY_UPDATED_PROVIDER_DOT_JSON, result); - } else { - receiver.send(ConfigHelper.INCORRECTLY_DOWNLOADED_JSON_FILES, Bundle.EMPTY); - } - } - else if ((task = task_for.getBundleExtra(ConfigHelper.SRP_AUTH)) != null) { - Bundle session_id_bundle = authenticateBySRP(task); - if(session_id_bundle.getBoolean(ConfigHelper.RESULT_KEY)) { - receiver.send(ConfigHelper.SRP_AUTHENTICATION_SUCCESSFUL, session_id_bundle); - } else { - Bundle user_message_bundle = new Bundle(); - String user_message_key = getResources().getString(R.string.user_message); - user_message_bundle.putString(user_message_key, session_id_bundle.getString(user_message_key)); - receiver.send(ConfigHelper.SRP_AUTHENTICATION_FAILED, user_message_bundle); - } - } - else if ((task = task_for.getBundleExtra(ConfigHelper.LOG_OUT)) != null) { - if(logOut(task)) { - receiver.send(ConfigHelper.LOGOUT_SUCCESSFUL, Bundle.EMPTY); - } else { - receiver.send(ConfigHelper.LOGOUT_FAILED, Bundle.EMPTY); - } - } - else if ((task = task_for.getBundleExtra(ConfigHelper.DOWNLOAD_CERTIFICATE)) != null) { - if(getNewCert(task)) { - receiver.send(ConfigHelper.CORRECTLY_DOWNLOADED_CERTIFICATE, Bundle.EMPTY); - } else { - receiver.send(ConfigHelper.INCORRECTLY_DOWNLOADED_CERTIFICATE, Bundle.EMPTY); - } - } - } - - /** - * Downloads the main cert and the eip-service.json files given through the task parameter - * @param task - * @return true if eip-service.json was parsed as a JSON object correctly. - */ - private boolean downloadJsonFiles(Bundle task) { - String cert_url = task.getString(ConfigHelper.MAIN_CERT_KEY); - String eip_service_json_url = task.getString(ConfigHelper.EIP_SERVICE_KEY); - boolean danger_on = task.getBoolean(ConfigHelper.DANGER_ON); - try { - String cert_string = getStringFromProvider(cert_url, danger_on); - ConfigHelper.saveSharedPref(ConfigHelper.MAIN_CERT_KEY, cert_string); - JSONObject eip_service_json = getJSONFromProvider(eip_service_json_url, danger_on); - ConfigHelper.saveSharedPref(ConfigHelper.EIP_SERVICE_KEY, eip_service_json); - return true; - } catch (JSONException e) { - return false; - } - } - - /** - * Starts the authentication process using SRP protocol. - * - * @param task containing: username, password and api url. - * @return a bundle with a boolean value mapped to a key named ConfigHelper.RESULT_KEY, and which is true if authentication was successful. - */ - private Bundle authenticateBySRP(Bundle task) { - Bundle session_id_bundle = new Bundle(); - - String username = (String) task.get(ConfigHelper.USERNAME_KEY); - String password = (String) task.get(ConfigHelper.PASSWORD_KEY); - if(wellFormedPassword(password)) { - String authentication_server = (String) task.get(ConfigHelper.API_URL_KEY); - - SRPParameters params = new SRPParameters(new BigInteger(ConfigHelper.NG_1024, 16).toByteArray(), ConfigHelper.G.toByteArray(), BigInteger.ZERO.toByteArray(), "SHA-256"); - LeapSRPSession client = new LeapSRPSession(username, password, params); - byte[] A = client.exponential(); - try { - JSONObject saltAndB = sendAToSRPServer(authentication_server, username, new BigInteger(1, A).toString(16)); - if(saltAndB.length() > 0) { - String salt = saltAndB.getString(ConfigHelper.SALT_KEY); - byte[] Bbytes = new BigInteger(saltAndB.getString("B"), 16).toByteArray(); - byte[] M1 = client.response(new BigInteger(salt, 16).toByteArray(), Bbytes); - JSONObject session_idAndM2 = sendM1ToSRPServer(authentication_server, username, M1); - if(session_idAndM2.has("M2") && client.verify((byte[])session_idAndM2.get("M2"))) { - session_id_bundle.putBoolean(ConfigHelper.RESULT_KEY, true); - session_id_bundle.putString(ConfigHelper.SESSION_ID_KEY, session_idAndM2.getString(ConfigHelper.SESSION_ID_KEY)); - session_id_bundle.putString(ConfigHelper.SESSION_ID_COOKIE_KEY, session_idAndM2.getString(ConfigHelper.SESSION_ID_COOKIE_KEY)); - } else { - session_id_bundle.putBoolean(ConfigHelper.RESULT_KEY, false); - session_id_bundle.putString(getResources().getString(R.string.user_message), getResources().getString(R.string.error_bad_user_password_user_message)); - } - } else { - session_id_bundle.putString(getResources().getString(R.string.user_message), getResources().getString(R.string.error_bad_user_password_user_message)); - session_id_bundle.putBoolean(ConfigHelper.RESULT_KEY, false); - } - } catch (ClientProtocolException e) { - session_id_bundle.putBoolean(ConfigHelper.RESULT_KEY, false); - session_id_bundle.putString(getResources().getString(R.string.user_message), getResources().getString(R.string.error_client_http_user_message)); - } catch (IOException e) { - session_id_bundle.putBoolean(ConfigHelper.RESULT_KEY, false); - session_id_bundle.putString(getResources().getString(R.string.user_message), getResources().getString(R.string.error_io_exception_user_message)); - } catch (JSONException e) { - session_id_bundle.putBoolean(ConfigHelper.RESULT_KEY, false); - session_id_bundle.putString(getResources().getString(R.string.user_message), getResources().getString(R.string.error_json_exception_user_message)); - } catch (NoSuchAlgorithmException e) { - session_id_bundle.putBoolean(ConfigHelper.RESULT_KEY, false); - session_id_bundle.putString(getResources().getString(R.string.user_message), getResources().getString(R.string.error_no_such_algorithm_exception_user_message)); - } - } else { - session_id_bundle.putBoolean(ConfigHelper.RESULT_KEY, false); - session_id_bundle.putString(getResources().getString(R.string.user_message), getResources().getString(R.string.error_not_valid_password_user_message)); - } - - return session_id_bundle; - } - - /** - * Validates a password - * @param entered_password - * @return true if the entered password length is greater or equal to eight (8). - */ - private boolean wellFormedPassword(String entered_password) { - return entered_password.length() >= 8; - } - - /** - * Sends an HTTP POST request to the authentication server with the SRP Parameter A. - * @param server_url - * @param username - * @param clientA First SRP parameter sent - * @return response from authentication server - * @throws ClientProtocolException - * @throws IOException - * @throws JSONException - */ - private JSONObject sendAToSRPServer(String server_url, String username, String clientA) throws ClientProtocolException, IOException, JSONException { - HttpPost post = new HttpPost(server_url + "/sessions.json" + "?" + "login=" + username + "&&" + "A=" + clientA); - return sendToServer(post); - } - - /** - * Sends an HTTP PUT request to the authentication server with the SRP Parameter M1 (or simply M). - * @param server_url - * @param username - * @param m1 Second SRP parameter sent - * @return response from authentication server - * @throws ClientProtocolException - * @throws IOException - * @throws JSONException - */ - private JSONObject sendM1ToSRPServer(String server_url, String username, byte[] m1) throws ClientProtocolException, IOException, JSONException { - HttpPut put = new HttpPut(server_url + "/sessions/" + username +".json" + "?" + "client_auth" + "=" + new BigInteger(1, ConfigHelper.trim(m1)).toString(16)); - JSONObject json_response = sendToServer(put); - - JSONObject session_idAndM2 = new JSONObject(); - if(json_response.length() > 0) { - byte[] M2_not_trimmed = new BigInteger(json_response.getString(ConfigHelper.M2_KEY), 16).toByteArray(); - Cookie session_id_cookie = LeapHttpClient.getInstance(getApplicationContext()).getCookieStore().getCookies().get(0); - session_idAndM2.put(ConfigHelper.SESSION_ID_COOKIE_KEY, session_id_cookie.getName()); - session_idAndM2.put(ConfigHelper.SESSION_ID_KEY, session_id_cookie.getValue()); - session_idAndM2.put(ConfigHelper.M2_KEY, ConfigHelper.trim(M2_not_trimmed)); - } - return session_idAndM2; - } - - /** - * Executes an HTTP request expecting a JSON response. - * @param request - * @return response from authentication server - * @throws ClientProtocolException - * @throws IOException - * @throws JSONException - */ - private JSONObject sendToServer(HttpUriRequest request) throws ClientProtocolException, IOException, JSONException { - DefaultHttpClient client = LeapHttpClient.getInstance(getApplicationContext()); - HttpContext localContext = new BasicHttpContext(); - localContext.setAttribute(ClientContext.COOKIE_STORE, client.getCookieStore()); - - HttpResponse getResponse = client.execute(request, localContext); - HttpEntity responseEntity = getResponse.getEntity(); - String plain_response = new Scanner(responseEntity.getContent()).useDelimiter("\\A").next(); - JSONObject json_response = new JSONObject(plain_response); - if(!json_response.isNull(ConfigHelper.ERRORS_KEY) || json_response.has(ConfigHelper.ERRORS_KEY)) { - return new JSONObject(); - } - - return json_response; - } - - /** - * Downloads a provider.json from a given URL, adding a new provider using the given name. - * @param task containing a boolean meaning if the provider is custom or not, another boolean meaning if the user completely trusts this provider, the provider name and its provider.json url. - * @return a bundle with a boolean value mapped to a key named ConfigHelper.RESULT_KEY, and which is true if the update was successful. - */ - private Bundle updateProviderDotJSON(Bundle task) { - Bundle result = new Bundle(); - boolean custom = task.getBoolean(ConfigHelper.CUSTOM); - boolean danger_on = task.getBoolean(ConfigHelper.DANGER_ON); - String provider_json_url = task.getString(ConfigHelper.PROVIDER_JSON_URL); - String provider_name = task.getString(ConfigHelper.PROVIDER_NAME); - - try { - JSONObject provider_json = getJSONFromProvider(provider_json_url, danger_on); - if(provider_json == null) { - result.putBoolean(ConfigHelper.RESULT_KEY, false); - } else { - ConfigHelper.saveSharedPref(ConfigHelper.ALLOWED_ANON, provider_json.getJSONObject(ConfigHelper.SERVICE_KEY).getBoolean(ConfigHelper.ALLOWED_ANON)); - - //ProviderListContent.addItem(new ProviderItem(provider_name, provider_json_url, provider_json, custom, danger_on)); - result.putBoolean(ConfigHelper.RESULT_KEY, true); - result.putString(ConfigHelper.PROVIDER_KEY, provider_json.toString()); - result.putBoolean(ConfigHelper.DANGER_ON, danger_on); - } - } catch (JSONException e) { - result.putBoolean(ConfigHelper.RESULT_KEY, false); - } - - return result; - } - - /** - * Downloads a custom provider provider.json file - * @param task containing a boolean meaning if the user completely trusts this provider, and the provider main url entered in the new custom provider dialog. - * @return true if provider.json file was successfully parsed as a JSON object. - */ - private Bundle downloadNewProviderDotJSON(Bundle task) { - Bundle result = new Bundle(); - boolean custom = true; - boolean danger_on = task.getBoolean(ConfigHelper.DANGER_ON); - - String provider_main_url = (String) task.get(ConfigHelper.PROVIDER_MAIN_URL); - String provider_name = provider_main_url.replaceFirst("http[s]?://", "").replaceFirst("\\/", "_"); - String provider_json_url = guessProviderDotJsonURL(provider_main_url); - - JSONObject provider_json; - try { - provider_json = getJSONFromProvider(provider_json_url, danger_on); - if(provider_json == null) { - result.putBoolean(ConfigHelper.RESULT_KEY, false); - } else { - - ConfigHelper.saveSharedPref(ConfigHelper.PROVIDER_KEY, provider_json); - ConfigHelper.saveSharedPref(ConfigHelper.DANGER_ON, danger_on); - ConfigHelper.saveSharedPref(ConfigHelper.ALLOWED_ANON, provider_json.getJSONObject(ConfigHelper.SERVICE_KEY).getBoolean(ConfigHelper.ALLOWED_ANON)); - ProviderItem added_provider = new ProviderItem(provider_name, provider_json_url, provider_json, custom, danger_on); - ProviderListContent.addItem(added_provider); - - result.putString(ConfigHelper.PROVIDER_ID, added_provider.getId()); - result.putBoolean(ConfigHelper.RESULT_KEY, true); - result.putString(ConfigHelper.PROVIDER_KEY, provider_json.toString()); - result.putBoolean(ConfigHelper.DANGER_ON, danger_on); - } - } catch (JSONException e) { - result.putBoolean(ConfigHelper.RESULT_KEY, false); - } - - return result; - } - - /** - * Tries to download whatever is pointed by the string_url. - * - * If danger_on flag is true, SSL exceptions will be managed by futher methods that will try to use some bypass methods. - * @param string_url - * @param danger_on if the user completely trusts this provider - * @return - */ - private String getStringFromProvider(String string_url, boolean danger_on) { - - String json_file_content = ""; - - URL provider_url = null; - int seconds_of_timeout = 1; - try { - provider_url = new URL(string_url); - URLConnection url_connection = provider_url.openConnection(); - url_connection.setConnectTimeout(seconds_of_timeout*1000); - json_file_content = new Scanner(url_connection.getInputStream()).useDelimiter("\\A").next(); - } catch (MalformedURLException e) { - displayToast(R.string.malformed_url); - } catch(SocketTimeoutException e) { - displayToast(R.string.server_is_down_message); - } catch (IOException e) { - if(provider_url != null) { - json_file_content = getStringFromProviderWithCACertAdded(provider_url, danger_on); - } else { - displayToast(R.string.certificate_error); - } - } catch (Exception e) { - if(provider_url != null && danger_on) { - json_file_content = getStringFromProviderWithCACertAdded(provider_url, danger_on); - } - } - - return json_file_content; - } - - /** - * Tries to download a string from given url without verifying the hostname. - * - * If a IOException still occurs, it tries with another bypass method: getStringFromProviderWithCACertAdded. - * @param string_url - * @return an empty string if everything fails, the url content if not. - */ - private String getStringFromProviderWithoutValidate( - URL string_url) { - - String json_string = ""; - HostnameVerifier hostnameVerifier = new HostnameVerifier() { - @Override - public boolean verify(String hostname, SSLSession session) { - return true; - } - }; - - try { - HttpsURLConnection urlConnection = - (HttpsURLConnection)string_url.openConnection(); - urlConnection.setHostnameVerifier(hostnameVerifier); - json_string = new Scanner(urlConnection.getInputStream()).useDelimiter("\\A").next(); - } catch (MalformedURLException e) { - displayToast(R.string.malformed_url); - } catch (IOException e) { - json_string = getStringFromProviderIgnoringCertificate(string_url); - } - - return json_string; - } - - /** - * Tries to download the contents of the provided url using main certificate from choosen provider. - * @param url - * @param danger_on true to download CA certificate in case it has not been downloaded. - * @return an empty string if it fails, the url content if not. - */ - private String getStringFromProviderWithCACertAdded(URL url, boolean danger_on) { - String json_file_content = ""; - - // Load CAs from an InputStream - // (could be from a resource or ByteArrayInputStream or ...) - String cert_string = ConfigHelper.getStringFromSharedPref(ConfigHelper.MAIN_CERT_KEY); - if(cert_string.isEmpty() && danger_on) { - cert_string = downloadCertificateWithoutTrusting(url.getProtocol() + "://" + url.getHost() + "/" + "ca.crt"); - ConfigHelper.saveSharedPref(ConfigHelper.MAIN_CERT_KEY, cert_string); - } - - try { - java.security.cert.Certificate dangerous_certificate = ConfigHelper.parseX509CertificateFromString(cert_string); - - // Create a KeyStore containing our trusted CAs - String keyStoreType = KeyStore.getDefaultType(); - KeyStore keyStore = KeyStore.getInstance(keyStoreType); - keyStore.load(null, null); - keyStore.setCertificateEntry("provider_ca_certificate", dangerous_certificate); - - // Create a TrustManager that trusts the CAs in our KeyStore - String tmfAlgorithm = TrustManagerFactory.getDefaultAlgorithm(); - TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmfAlgorithm); - tmf.init(keyStore); - - // Create an SSLContext that uses our TrustManager - SSLContext context = SSLContext.getInstance("TLS"); - context.init(null, tmf.getTrustManagers(), null); - - // Tell the URLConnection to use a SocketFactory from our SSLContext - HttpsURLConnection urlConnection = - (HttpsURLConnection)url.openConnection(); - urlConnection.setSSLSocketFactory(context.getSocketFactory()); - json_file_content = new Scanner(urlConnection.getInputStream()).useDelimiter("\\A").next(); - } catch (CertificateException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } catch (UnknownHostException e) { - displayToast(R.string.server_is_down_message); - } catch (IOException e) { - // The downloaded certificate doesn't validate our https connection. - if(danger_on) { - json_file_content = getStringFromProviderWithoutValidate(url); - } else { - displayToast(R.string.certificate_error); - } - } catch (KeyStoreException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } catch (NoSuchAlgorithmException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } catch (KeyManagementException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } - return json_file_content; - } - - /** - * Downloads the string that's in the url without regarding certificate validity - */ - private String getStringFromProviderIgnoringCertificate(URL url) { - String string = ""; - try { - class DefaultTrustManager implements X509TrustManager { - - @Override - public void checkClientTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {} - - @Override - public void checkServerTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {} - - @Override - public X509Certificate[] getAcceptedIssuers() { - return null; - } - } - - SSLContext context = SSLContext.getInstance("TLS"); - context.init(new KeyManager[0], new TrustManager[] {new DefaultTrustManager()}, new SecureRandom()); - - HttpsURLConnection urlConnection = (HttpsURLConnection)url.openConnection(); - urlConnection.setSSLSocketFactory(context.getSocketFactory()); - urlConnection.setHostnameVerifier(new HostnameVerifier() { - @Override - public boolean verify(String arg0, SSLSession arg1) { - return true; - } - }); - string = new Scanner(urlConnection.getInputStream()).useDelimiter("\\A").next(); - System.out.println("String ignoring certificate = " + string); - } catch (IOException e) { - // The downloaded certificate doesn't validate our https connection. - e.printStackTrace(); - displayToast(R.string.certificate_error); - } catch (NoSuchAlgorithmException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } catch (KeyManagementException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } - return string; - } - - /** - * Downloads the certificate from the parameter url bypassing self signed certificate SSL errors. - * @param certificate_url_string - * @return the certificate, as a string - */ - private String downloadCertificateWithoutTrusting(String certificate_url_string) { - - String cert_string = ""; - HostnameVerifier hostnameVerifier = new HostnameVerifier() { - @Override - public boolean verify(String hostname, SSLSession session) { - return true; - } - }; - - TrustManager[] trustAllCerts = new TrustManager[]{ - new X509TrustManager() { - public java.security.cert.X509Certificate[] getAcceptedIssuers() { - return null; - } - public void checkClientTrusted( java.security.cert.X509Certificate[] certs, String authType) { - } - public void checkServerTrusted( java.security.cert.X509Certificate[] certs, String authType) { - } - } - }; - - try { - URL certificate_url = new URL(certificate_url_string); - HttpsURLConnection urlConnection = - (HttpsURLConnection)certificate_url.openConnection(); - urlConnection.setHostnameVerifier(hostnameVerifier); - - SSLContext sc = SSLContext.getInstance("TLS"); - sc.init(null, trustAllCerts, new java.security.SecureRandom()); - - urlConnection.setSSLSocketFactory(sc.getSocketFactory()); - - cert_string = new Scanner(urlConnection.getInputStream()).useDelimiter("\\A").next(); - - } catch (MalformedURLException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } catch (IOException e) { - // This should never happen - e.printStackTrace(); - } catch (NoSuchAlgorithmException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } catch (KeyManagementException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - } - - return cert_string; - } - - /** - * Downloads a JSON object from the given url. - * - * It first downloads the JSON object as a String, and then parses it to JSON object. - * @param json_url - * @param danger_on if the user completely trusts the certificate of the url address. - * @return - * @throws JSONException - */ - private JSONObject getJSONFromProvider(String json_url, boolean danger_on) throws JSONException { - String json_file_content = getStringFromProvider(json_url, danger_on); - return new JSONObject(json_file_content); - } - - /** - * Tries to guess the provider.json url given the main provider url. - * @param provider_main_url - * @return the guessed provider.json url - */ - private String guessProviderDotJsonURL(String provider_main_url) { - return provider_main_url + "/provider.json"; - } - - /** - * Logs out from the api url retrieved from the task. - * @param task containing api url from which the user will log out - * @return true if there were no exceptions - */ - private boolean logOut(Bundle task) { - DefaultHttpClient client = LeapHttpClient.getInstance(getApplicationContext()); - int session_id_index = 0; - //String delete_url = task.getString(ConfigHelper.srp_server_url_key) + "/sessions/" + client.getCookieStore().getCookies().get(0).getValue(); - try { - String delete_url = task.getString(ConfigHelper.API_URL_KEY) + "/logout" + "?authenticity_token=" + client.getCookieStore().getCookies().get(session_id_index).getValue(); - HttpDelete delete = new HttpDelete(delete_url); - HttpResponse getResponse = client.execute(delete); - HttpEntity responseEntity = getResponse.getEntity(); - responseEntity.consumeContent(); - } catch (ClientProtocolException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - return false; - } catch (IndexOutOfBoundsException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - return false; - } catch (IOException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - return false; - } - return true; - } - - /** - * Downloads a new OpenVPN certificate, attaching authenticated cookie for authenticated certificate. - * - * @param task containing the type of the certificate to be downloaded - * @return true if certificate was downloaded correctly, false if provider.json or danger_on flag are not present in SharedPreferences, or if the certificate url could not be parsed as a URI, or if there was an SSL error. - */ - private boolean getNewCert(Bundle task) { - String type_of_certificate = task.getString(ConfigHelper.TYPE_OF_CERTIFICATE); - try { - JSONObject provider_json = ConfigHelper.getJsonFromSharedPref(ConfigHelper.PROVIDER_KEY); - URL provider_main_url = new URL(provider_json.getString(ConfigHelper.API_URL_KEY)); - String new_cert_string_url = provider_main_url.toString() + "/" + provider_json.getString(ConfigHelper.API_VERSION_KEY) + "/" + ConfigHelper.CERT_KEY; - - if(type_of_certificate.equalsIgnoreCase(ConfigHelper.AUTHED_CERTIFICATE)) { - HttpCookie session_id_cookie = new HttpCookie(task.getString(ConfigHelper.SESSION_ID_COOKIE_KEY), task.getString(ConfigHelper.SESSION_ID_KEY)); - - CookieManager cookieManager = new CookieManager(); - cookieManager.getCookieStore().add(provider_main_url.toURI(), session_id_cookie); - CookieHandler.setDefault(cookieManager); - } - - boolean danger_on = ConfigHelper.getBoolFromSharedPref(ConfigHelper.DANGER_ON); - String cert_string = getStringFromProvider(new_cert_string_url, danger_on); - if(!cert_string.isEmpty()) { - // API returns concatenated cert & key. Split them for OpenVPN options - String certificate = null, key = null; - String[] certAndKey = cert_string.split("(?<=-\n)"); - for (int i=0; i < certAndKey.length-1; i++){ - if ( certAndKey[i].contains("KEY") ) - key = certAndKey[i++] + certAndKey[i]; - else if ( certAndKey[i].contains("CERTIFICATE") ) - certificate = certAndKey[i++] + certAndKey[i]; - } - ConfigHelper.saveSharedPref(ConfigHelper.CERT_KEY, certificate); - ConfigHelper.saveSharedPref(ConfigHelper.KEY_KEY, key); - return true; - } else { - return false; - } - } catch (IOException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - return false; - } catch (JSONException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - return false; - } catch (URISyntaxException e) { - // TODO Auto-generated catch block - e.printStackTrace(); - return false; - } - } -} |