Merge branch 'master' into improve-file-more

Conflicts:
	OpenKeychain/src/main/java/org/sufficientlysecure/keychain/KeychainApplication.java
	OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/DecryptFileFragment.java
	OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EncryptFileFragment.java
	OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/FileDialogFragment.java

3 files changed, 282 insertions, 2 deletions

diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/ContactHelper.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/ContactHelper.java
index d8a7e8427..e639824ec 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/ContactHelper.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/ContactHelper.java
@@ -22,8 +22,10 @@ import android.accounts.AccountManager;
 import android.content.*;
 import android.database.Cursor;
 import android.net.Uri;
+import android.os.Build;
 import android.provider.ContactsContract;
 import android.util.Patterns;
+
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.pgp.KeyRing;
@@ -58,7 +60,27 @@ public class ContactHelper {
             ContactsContract.Data.RAW_CONTACT_ID + "=? AND " + ContactsContract.Data.MIMETYPE + "=?";
     public static final String ID_SELECTION = ContactsContract.RawContacts._ID + "=?";
 
-    public static List<String> getMailAccounts(Context context) {
+    public static List<String> getPossibleUserEmails(Context context) {
+        Set<String> accountMails = getAccountEmails(context);
+        accountMails.addAll(getMainProfileContactEmails(context));
+        // now return the Set (without duplicates) as a List
+        return new ArrayList<String>(accountMails);
+    }
+
+    public static List<String> getPossibleUserNames(Context context) {
+        Set<String> accountMails = getAccountEmails(context);
+        Set<String> names = getContactNamesFromEmails(context, accountMails);
+        names.addAll(getMainProfileContactName(context));
+        return new ArrayList<String>(names);
+    }
+
+    /**
+     * Get emails from AccountManager
+     *
+     * @param context
+     * @return
+     */
+    private static Set<String> getAccountEmails(Context context) {
         final Account[] accounts = AccountManager.get(context).getAccounts();
         final Set<String> emailSet = new HashSet<String>();
         for (Account account : accounts) {
@@ -66,7 +88,118 @@ public class ContactHelper {
                 emailSet.add(account.name);
             }
         }
-        return new ArrayList<String>(emailSet);
+        return emailSet;
+    }
+
+    /**
+     * Search for contact names based on a list of emails (to find out the names of the
+     * device owner based on the email addresses from AccountsManager)
+     *
+     * @param context
+     * @param emails
+     * @return
+     */
+    private static Set<String> getContactNamesFromEmails(Context context, Set<String> emails) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
+            Set<String> names = new HashSet<String>();
+            for (String email : emails) {
+                ContentResolver resolver = context.getContentResolver();
+                Cursor profileCursor = resolver.query(
+                        ContactsContract.CommonDataKinds.Email.CONTENT_URI,
+                        new String[]{ContactsContract.CommonDataKinds.Email.ADDRESS,
+                                ContactsContract.Contacts.DISPLAY_NAME},
+                        ContactsContract.CommonDataKinds.Email.ADDRESS + "=?",
+                        new String[]{email}, null
+                );
+                if (profileCursor == null) return null;
+
+                Set<String> currNames = new HashSet<String>();
+                while (profileCursor.moveToNext()) {
+                    String name = profileCursor.getString(1);
+                    Log.d(Constants.TAG, "name" + name);
+                    if (name != null) {
+                        currNames.add(name);
+                    }
+                }
+                profileCursor.close();
+                names.addAll(currNames);
+            }
+            return names;
+        } else {
+            return new HashSet<String>();
+        }
+    }
+
+    /**
+     * Retrieves the emails of the primary profile contact
+     * http://developer.android.com/reference/android/provider/ContactsContract.Profile.html
+     *
+     * @param context
+     * @return
+     */
+    private static Set<String> getMainProfileContactEmails(Context context) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
+            ContentResolver resolver = context.getContentResolver();
+            Cursor profileCursor = resolver.query(
+                    Uri.withAppendedPath(
+                            ContactsContract.Profile.CONTENT_URI,
+                            ContactsContract.Contacts.Data.CONTENT_DIRECTORY),
+                    new String[]{ContactsContract.CommonDataKinds.Email.ADDRESS,
+                            ContactsContract.CommonDataKinds.Email.IS_PRIMARY},
+
+                    // Selects only email addresses
+                    ContactsContract.Contacts.Data.MIMETYPE + "=?",
+                    new String[]{
+                            ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE,
+                    },
+                    // Show primary rows first. Note that there won't be a primary email address if the
+                    // user hasn't specified one.
+                    ContactsContract.Contacts.Data.IS_PRIMARY + " DESC"
+            );
+            if (profileCursor == null) return null;
+
+            Set<String> emails = new HashSet<String>();
+            while (profileCursor.moveToNext()) {
+                String email = profileCursor.getString(0);
+                if (email != null) {
+                    emails.add(email);
+                }
+            }
+            profileCursor.close();
+            return emails;
+        } else {
+            return new HashSet<String>();
+        }
+    }
+
+    /**
+     * Retrieves the name of the primary profile contact
+     * http://developer.android.com/reference/android/provider/ContactsContract.Profile.html
+     *
+     * @param context
+     * @return
+     */
+    private static List<String> getMainProfileContactName(Context context) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
+            ContentResolver resolver = context.getContentResolver();
+            Cursor profileCursor = resolver.query(ContactsContract.Profile.CONTENT_URI,
+                    new String[]{ContactsContract.Profile.DISPLAY_NAME},
+                    null, null, null);
+            if (profileCursor == null) return null;
+
+            Set<String> names = new HashSet<String>();
+            // should only contain one entry!
+            while (profileCursor.moveToNext()) {
+                String name = profileCursor.getString(0);
+                if (name != null) {
+                    names.add(name);
+                }
+            }
+            profileCursor.close();
+            return new ArrayList<String>(names);
+        } else {
+            return new ArrayList<String>();
+        }
     }
 
     public static List<String> getContactMails(Context context) {
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/Preferences.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/Preferences.java
index c82c5e115..6f3d38ccd 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/Preferences.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/Preferences.java
@@ -169,4 +169,22 @@ public class Preferences {
         editor.putString(Constants.Pref.KEY_SERVERS, rawData);
         editor.commit();
     }
+
+    public void updateKeyServers() {
+        if (mSharedPreferences.getInt(Constants.Pref.KEY_SERVERS_DEFAULT_VERSION, 0) !=
+                Constants.Defaults.KEY_SERVERS_VERSION) {
+            String[] servers = getKeyServers();
+            for (int i = 0; i < servers.length; i++) {
+                if (servers[i].equals("pool.sks-keyservers.net")) {
+                    servers[i] = "hkps://hkps.pool.sks-keyservers.net";
+                } else if (servers[i].equals("pgp.mit.edu")) {
+                    servers[i] = "hkps://pgp.mit.edu";
+                }
+            }
+            setKeyServers(servers);
+            mSharedPreferences.edit()
+                    .putInt(Constants.Pref.KEY_SERVERS_DEFAULT_VERSION, Constants.Defaults.KEY_SERVERS_VERSION)
+                    .commit();
+        }
+    }
 }
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/TlsHelper.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/TlsHelper.java
new file mode 100644
index 000000000..4b09af04d
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/TlsHelper.java
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * 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 org.sufficientlysecure.keychain.helper;
+
+import android.content.res.AssetManager;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.util.Log;
+
+import javax.net.ssl.HttpsURLConnection;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.TrustManagerFactory;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.net.URLConnection;
+import java.security.KeyManagementException;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.cert.*;
+import java.util.HashMap;
+import java.util.Map;
+
+public class TlsHelper {
+
+    public static class TlsHelperException extends Exception {
+        public TlsHelperException(Exception e) {
+            super(e);
+        }
+    }
+
+    private static Map<String, byte[]> sStaticCA = new HashMap<String, byte[]>();
+
+    public static void addStaticCA(String domain, byte[] certificate) {
+        sStaticCA.put(domain, certificate);
+    }
+
+    public static void addStaticCA(String domain, AssetManager assetManager, String name) {
+        try {
+            InputStream is = assetManager.open(name);
+            ByteArrayOutputStream baos = new ByteArrayOutputStream();
+            int reads = is.read();
+
+            while(reads != -1){
+                baos.write(reads);
+                reads = is.read();
+            }
+
+            is.close();
+
+            addStaticCA(domain, baos.toByteArray());
+        } catch (IOException e) {
+            Log.w(Constants.TAG, e);
+        }
+    }
+
+    public static URLConnection openConnection(URL url) throws IOException, TlsHelperException {
+        if (url.getProtocol().equals("https")) {
+            for (String domain : sStaticCA.keySet()) {
+                if (url.getHost().endsWith(domain)) {
+                    return openCAConnection(sStaticCA.get(domain), url);
+                }
+            }
+        }
+        return url.openConnection();
+    }
+
+    /**
+     * Opens a Connection that will only accept certificates signed with a specific CA and skips common name check.
+     * This is required for some distributed Keyserver networks like sks-keyservers.net
+     *
+     * @param certificate The X.509 certificate used to sign the servers certificate
+     * @param url         Connection target
+     */
+    public static HttpsURLConnection openCAConnection(byte[] certificate, URL url)
+            throws TlsHelperException, IOException {
+        try {
+            // Load CA
+            CertificateFactory cf = CertificateFactory.getInstance("X.509");
+            Certificate ca = cf.generateCertificate(new ByteArrayInputStream(certificate));
+
+            // Create a KeyStore containing our trusted CAs
+            String keyStoreType = KeyStore.getDefaultType();
+            KeyStore keyStore = KeyStore.getInstance(keyStoreType);
+            keyStore.load(null, null);
+            keyStore.setCertificateEntry("ca", ca);
+
+            // 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());
+
+            return urlConnection;
+        } catch (CertificateException e) {
+            throw new TlsHelperException(e);
+        } catch (NoSuchAlgorithmException e) {
+            throw new TlsHelperException(e);
+        } catch (KeyStoreException e) {
+            throw new TlsHelperException(e);
+        } catch (KeyManagementException e) {
+            throw new TlsHelperException(e);
+        }
+    }
+}