Store S/MIME key alias in identity

app/src/main/java/eu/faircode/email/AdapterIdentity.java

@@ -125,9 +125,19 @@ public class AdapterIdentity extends RecyclerView.Adapter<AdapterIdentity.ViewHo
 
             tvHost.setText(String.format("%s:%d", identity.host, identity.port));
             tvAccount.setText(identity.accountName);
-            tvSignKeyId.setText(identity.sign_key == null ? null
+
-                    : context.getString(R.string.title_sign_key, Long.toHexString(identity.sign_key)));
+            StringBuilder sb = new StringBuilder();
-            tvSignKeyId.setVisibility(identity.sign_key == null ? View.GONE : View.VISIBLE);
+            if (identity.sign_key != null)
+                sb.append(Long.toHexString(identity.sign_key));
+            if (identity.sign_key_alias != null) {
+                if (sb.length() != 0)
+                    sb.append(", ");
+                sb.append(identity.sign_key_alias);
+            }
+
+            tvSignKeyId.setText(context.getString(R.string.title_sign_key, sb.toString()));
+            tvSignKeyId.setVisibility(sb.length() > 0 ? View.VISIBLE : View.GONE);
+
             tvLast.setText(context.getString(R.string.title_last_connected,
                     identity.last_connected == null ? "-" : DTF.format(identity.last_connected)));
 
@@ -230,7 +240,16 @@ public class AdapterIdentity extends RecyclerView.Adapter<AdapterIdentity.ViewHo
                             long id = args.getLong("id");
 
                             DB db = DB.getInstance(context);
+                            try {
+                                db.beginTransaction();
+
                                 db.identity().setIdentitySignKey(id, null);
+                                db.identity().setIdentitySignKeyAlias(id, null);
+
+                                db.setTransactionSuccessful();
+                            } finally {
+                                db.endTransaction();
+                            }
 
                             return null;
                         }

app/src/main/java/eu/faircode/email/DB.java

@@ -56,7 +56,7 @@ import io.requery.android.database.sqlite.RequerySQLiteOpenHelperFactory;
 // https://developer.android.com/topic/libraries/architecture/room.html
 
 @Database(
-        version = 118,
+        version = 119,
         entities = {
                 EntityIdentity.class,
                 EntityAccount.class,
@@ -1155,6 +1155,13 @@ public abstract class DB extends RoomDatabase {
                         db.execSQL("CREATE INDEX IF NOT EXISTS `index_certificate_email` ON `certificate` (`email`)");
                     }
                 })
+                .addMigrations(new Migration(118, 119) {
+                    @Override
+                    public void migrate(@NonNull SupportSQLiteDatabase db) {
+                        Log.i("DB migration from version " + startVersion + " to " + endVersion);
+                        db.execSQL("ALTER TABLE `identity` ADD COLUMN `sign_key_alias` TEXT");
+                    }
+                })
                 .build();
     }
 

app/src/main/java/eu/faircode/email/DaoIdentity.java

@@ -94,6 +94,9 @@ public interface DaoIdentity {
     @Query("UPDATE identity SET sign_key = :sign_key WHERE id = :id")
     int setIdentitySignKey(long id, Long sign_key);
 
+    @Query("UPDATE identity SET sign_key_alias = :alias WHERE id = :id")
+    int setIdentitySignKeyAlias(long id, String alias);
+
     @Query("UPDATE identity SET error = :error WHERE id = :id")
     int setIdentityError(long id, String error);
 

app/src/main/java/eu/faircode/email/EntityIdentity.java

@@ -100,6 +100,7 @@ public class EntityIdentity {
     public Boolean store_sent = false; // obsolete
     public Long sent_folder = null; // obsolete
     public Long sign_key = null; // OpenPGP
+    public String sign_key_alias = null; // S/MIME
     public Boolean tbd;
     public String state;
     public String error;

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -1249,18 +1249,26 @@ public class FragmentCompose extends FragmentBase {
     private void onEncrypt(final EntityMessage draft) {
         if (EntityMessage.SMIME_SIGNONLY.equals(draft.encrypt) ||
                 EntityMessage.SMIME_SIGNENCRYPT.equals(draft.encrypt)) {
-
-            String sender = null;
-            if (draft.from != null && draft.from.length > 0)
-                sender = ((InternetAddress) draft.from[0]).getAddress();
-            Log.i("Alias sender=" + sender);
-
             Bundle args = new Bundle();
             args.putLong("id", draft.id);
             args.putInt("type", draft.encrypt);
-            args.putString("sender", sender);
 
-            Helper.selectKeyAlias(getActivity(), sender, new Helper.IKeyAlias() {
+            new SimpleTask<EntityIdentity>() {
+                @Override
+                protected EntityIdentity onExecute(Context context, Bundle args) {
+                    long id = args.getLong("id");
+
+                    DB db = DB.getInstance(context);
+                    EntityMessage draft = db.message().getMessage(id);
+                    if (draft == null || draft.identity == null)
+                        return null;
+
+                    return db.identity().getIdentity(draft.identity);
+                }
+
+                @Override
+                protected void onExecuted(final Bundle args, EntityIdentity identity) {
+                    Helper.selectKeyAlias(getActivity(), identity.sign_key_alias, new Helper.IKeyAlias() {
                         @Override
                         public void onSelected(String alias) {
                             args.putString("alias", alias);
@@ -1281,6 +1289,13 @@ public class FragmentCompose extends FragmentBase {
                             snackbar.show();
                         }
                     });
+                }
+
+                @Override
+                protected void onException(Bundle args, Throwable ex) {
+                    Helper.unexpectedError(getParentFragmentManager(), ex);
+                }
+            }.execute(this, args, "compose:alias");
         } else {
             if (pgpService.isBound())
                 try {
@@ -1923,8 +1938,10 @@ public class FragmentCompose extends FragmentBase {
                 };
                 bpContent.setContent(imessage.getContent(), imessage.getContentType());
 
+                // Store selected alias
                 if (alias == null)
                     throw new IllegalArgumentException("Key alias missing");
+                db.identity().setIdentitySignKeyAlias(identity.id, alias);
 
                 // Get private key
                 PrivateKey privkey = KeyChain.getPrivateKey(context, alias);