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authorParménides GV <parmegv@sdf.org>2014-10-09 18:16:28 +0200
committerParménides GV <parmegv@sdf.org>2014-10-09 18:22:59 +0200
commit5bb1d3baf93c76e7ec70a8abd5584c33f75383b8 (patch)
treee18229cf5bc51d838d0356887ca744b9910a6b08 /app/src/release
parent2b56dd61c0bd9eb6f71405d1d7f07f3051b29601 (diff)
Check self-signed fingerprint.
Diffstat (limited to 'app/src/release')
-rw-r--r--app/src/release/java/se/leap/bitmaskclient/ProviderAPI.java78
1 files changed, 51 insertions, 27 deletions
diff --git a/app/src/release/java/se/leap/bitmaskclient/ProviderAPI.java b/app/src/release/java/se/leap/bitmaskclient/ProviderAPI.java
index ab05bc51..d97a67c8 100644
--- a/app/src/release/java/se/leap/bitmaskclient/ProviderAPI.java
+++ b/app/src/release/java/se/leap/bitmaskclient/ProviderAPI.java
@@ -16,16 +16,26 @@
*/
package se.leap.bitmaskclient;
+
+
+
+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 java.io.DataOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
+import java.net.ConnectException;
import java.net.CookieHandler;
import java.net.CookieManager;
import java.net.CookiePolicy;
-import java.net.ConnectException;
import java.net.MalformedURLException;
import java.net.SocketTimeoutException;
import java.net.URISyntaxException;
@@ -33,10 +43,10 @@ import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.net.UnknownHostException;
-import javax.net.ssl.SSLHandshakeException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
+import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.cert.CertificateEncodingException;
@@ -47,32 +57,23 @@ import java.util.Calendar;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
-import java.util.Scanner;
import java.util.NoSuchElementException;
-
+import java.util.Scanner;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.KeyManager;
import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLHandshakeException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;
-
import org.apache.http.client.ClientProtocolException;
import org.jboss.security.srp.SRPParameters;
import org.json.JSONException;
import org.json.JSONObject;
-
-import se.leap.bitmaskclient.R;
import se.leap.bitmaskclient.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 se.leap.bitmaskclient.R;
/**
@@ -545,7 +546,7 @@ public class ProviderAPI extends IntentService {
}
if(!PROVIDER_JSON_DOWNLOADED)
- current_download = getAndSetProviderJson(last_provider_main_url);
+ current_download = getAndSetProviderJson(last_provider_main_url);
if(PROVIDER_JSON_DOWNLOADED || (current_download.containsKey(RESULT_KEY) && current_download.getBoolean(RESULT_KEY))) {
broadcast_progress(progress++);
PROVIDER_JSON_DOWNLOADED = true;
@@ -596,20 +597,43 @@ public class ProviderAPI extends IntentService {
return CA_CERT_DOWNLOADED;
}
- private boolean validCertificate(String cert_string) {
- boolean result = false;
- if(!ConfigHelper.checkErroneousDownload(cert_string)) {
- X509Certificate certCert = ConfigHelper.parseX509CertificateFromString(cert_string);
- try {
- Base64.encodeToString( certCert.getEncoded(), Base64.DEFAULT);
- result = true;
- } catch (CertificateEncodingException e) {
- Log.d(TAG, e.getLocalizedMessage());
- }
- }
+ private boolean validCertificate(String cert_string) {
+ boolean result = false;
+ if(!ConfigHelper.checkErroneousDownload(cert_string)) {
+ X509Certificate certificate = ConfigHelper.parseX509CertificateFromString(cert_string);
+ try {
+ JSONObject provider_json = new JSONObject(getSharedPreferences(Dashboard.SHARED_PREFERENCES, MODE_PRIVATE).getString(Provider.KEY, ""));
+ String fingerprint = provider_json.getString(Provider.CA_CERT_FINGERPRINT);
+ String encoding = fingerprint.split(":")[0];
+ String expected_fingerprint = fingerprint.split(":")[1];
+ String real_fingerprint = base64toHex(Base64.encodeToString(
+ MessageDigest.getInstance(encoding).digest(certificate.getEncoded()),
+ Base64.DEFAULT));
+
+ result = real_fingerprint.trim().equalsIgnoreCase(expected_fingerprint.trim());
+ } catch (JSONException e) {
+ result = false;
+ } catch (NoSuchAlgorithmException e) {
+ result = false;
+ } catch (CertificateEncodingException e) {
+ result = false;
+ }
+ }
- return result;
+ return result;
+ }
+
+ private String base64toHex(String base64_input) {
+ byte[] byteArray = Base64.decode(base64_input, Base64.DEFAULT);
+ int readBytes = byteArray.length;
+ StringBuffer hexData = new StringBuffer();
+ int onebyte;
+ for (int i=0; i < readBytes; i++) {
+ onebyte = ((0x000000ff & byteArray[i]) | 0xffffff00);
+ hexData.append(Integer.toHexString(onebyte).substring(6));
}
+ return hexData.toString();
+ }
private Bundle getAndSetProviderJson(String provider_main_url) {
Bundle result = new Bundle();