bug 638940 - File Upload: we should not change file names, paths and extensions r=dougt

embedding/android/GeckoApp.java

@@ -59,6 +59,8 @@ import android.hardware.*;
 
 import android.util.*;
 import android.net.*;
+import android.database.*;
+import android.provider.*;
 
 abstract public class GeckoApp
     extends Activity
@@ -654,13 +656,33 @@ abstract public class GeckoApp
             try {
                 ContentResolver cr = getContentResolver();
                 Uri uri = data.getData();
-                String mimeType = cr.getType(uri);
-                String fileExt = "." +
-                    GeckoAppShell.getExtensionFromMimeType(mimeType);
-                File file =
-                    File.createTempFile("tmp_" +
-                                        (int)Math.floor(1000 * Math.random()),
-                                        fileExt, sGREDir);
+                Cursor cursor = GeckoApp.mAppContext.getContentResolver().query(
+                    uri, 
+                    new String[] { OpenableColumns.DISPLAY_NAME },
+                    null, 
+                    null, 
+                    null);
+                String name = null;
+                if (cursor != null) {
+                    try {
+                        if (cursor.moveToNext()) {
+                            name = cursor.getString(0);
+                        }
+                    } finally {
+                        cursor.close();
+                    }
+                }
+                String fileName = "tmp_";
+                String fileExt = null;
+                int period;
+                if (name == null || (period = name.lastIndexOf('.')) == -1) {
+                    String mimeType = cr.getType(uri);
+                    fileExt = "." + GeckoAppShell.getExtensionFromMimeType(mimeType);
+                } else {
+                    fileExt = name.substring(period);
+                    fileName = name.substring(0, period);
+                }
+                File file = File.createTempFile(fileName, fileExt, sGREDir);
 
                 FileOutputStream fos = new FileOutputStream(file);
                 InputStream is = cr.openInputStream(uri);