diff options
| author | Arne Schwabe <arne@rfc2549.org> | 2012-12-22 22:57:54 +0100 | 
|---|---|---|
| committer | Arne Schwabe <arne@rfc2549.org> | 2012-12-22 22:57:54 +0100 | 
| commit | 2ddc5f8b867aabe1820d37bb89db8e91efd10234 (patch) | |
| tree | 79b10ae28ae43d76f66beb72a8d5626e4c68e62b /src/de/blinkt/openvpn/FileProvider.java | |
| parent | 904ce469f833d005b9d209b415924d3ba64bfb01 (diff) | |
commit files forgot in last commit, add push fix
Diffstat (limited to 'src/de/blinkt/openvpn/FileProvider.java')
| -rw-r--r-- | src/de/blinkt/openvpn/FileProvider.java | 129 | 
1 files changed, 129 insertions, 0 deletions
diff --git a/src/de/blinkt/openvpn/FileProvider.java b/src/de/blinkt/openvpn/FileProvider.java new file mode 100644 index 00000000..1147ccf0 --- /dev/null +++ b/src/de/blinkt/openvpn/FileProvider.java @@ -0,0 +1,129 @@ +/* + * Copyright (C) 2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + *      http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package de.blinkt.openvpn; + +import java.io.File; +import java.io.FileInputStream; +import java.io.FileNotFoundException; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.InputStream; + +import android.content.ContentProvider; +import android.content.ContentValues; +import android.content.ContentProvider.PipeDataWriter; +import android.content.res.AssetFileDescriptor; +import android.database.Cursor; +import android.net.Uri; +import android.os.Bundle; +import android.os.ParcelFileDescriptor; +import android.util.Log; + +/** + * A very simple content provider that can serve arbitrary asset files from + * our .apk. + */ +public class FileProvider extends ContentProvider +        implements PipeDataWriter<InputStream> { +    @Override +    public boolean onCreate() { +        return true; +    } + +    @Override +    public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, +            String sortOrder) { +        // Don't support queries. +        return null; +    } + +    @Override +    public Uri insert(Uri uri, ContentValues values) { +        // Don't support inserts. +        return null; +    } + +    @Override +    public int delete(Uri uri, String selection, String[] selectionArgs) { +        // Don't support deletes. +        return 0; +    } + +    @Override +    public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { +        // Don't support updates. +        return 0; +    } + +    @Override +    public String getType(Uri uri) { +        // For this sample, assume all files are .apks. +        return "application/octet-stream"; +    } + +    @Override +    public AssetFileDescriptor openAssetFile(Uri uri, String mode) throws FileNotFoundException { +        // Try to open an asset with the given name. +    	String path = uri.getPath(); +    	if(path.startsWith("/")) +    		path = path.replaceFirst("/", "");        +    	 +    	// I think this already random enough, no need for magic secure cookies +    	// 1f9563a4-a1f5-2165-255f2219-111823ef.dmp +    	if (!path.matches("^[0-9a-z-.]*$")) +    		throw new FileNotFoundException("url not in expect format " + uri); + +        try { +        	 +        	File cachedir = getContext().getCacheDir(); +        	File dumpfile = new File(cachedir,path); +            InputStream is = new FileInputStream(dumpfile); +            // Start a new thread that pipes the stream data back to the caller. +            return new AssetFileDescriptor( +                    openPipeHelper(uri, null, null, is, this), 0, +                    dumpfile.length()); +        } catch (IOException e) { +            FileNotFoundException fnf = new FileNotFoundException("Unable to open minidump " + uri); +            throw fnf; +        } +    } + +    @Override +    public void writeDataToPipe(ParcelFileDescriptor output, Uri uri, String mimeType, +            Bundle opts, InputStream args) { +        // Transfer data from the asset to the pipe the client is reading. +        byte[] buffer = new byte[8192]; +        int n; +        FileOutputStream fout = new FileOutputStream(output.getFileDescriptor()); +        try { +            while ((n=args.read(buffer)) >= 0) { +                fout.write(buffer, 0, n); +            } +        } catch (IOException e) { +            Log.i("OpenVPNFileProvider", "Failed transferring", e); +        } finally { +            try { +                args.close(); +            } catch (IOException e) { +            } +            try { +                fout.close(); +            } catch (IOException e) { +            } +        } +    } +}  | 
