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authorChris Wren <cwren@android.com>2013-12-18 19:11:40 (GMT)
committerChris Wren <cwren@android.com>2013-12-18 19:28:35 (GMT)
commit2fd318246fbf8639cdaf901798f267fb027fff12 (patch)
treeeb9563a307076fd787a6c5d598c1cf2c8797d598 /util
parentf6a22ada816ae4f63576679f03472b0a984e82be (diff)
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support multiple files and fix logcat smippets for launcher_protoutil
plus some code cleanup Change-Id: I09b4a6aedbb1251a65d379464d830da694d38a38
Diffstat (limited to 'util')
-rw-r--r--util/com/android/launcher3/DecoderRing.java299
1 files changed, 167 insertions, 132 deletions
diff --git a/util/com/android/launcher3/DecoderRing.java b/util/com/android/launcher3/DecoderRing.java
index 6ad6bc5..7098e18 100644
--- a/util/com/android/launcher3/DecoderRing.java
+++ b/util/com/android/launcher3/DecoderRing.java
@@ -15,7 +15,6 @@
*/
package com.android.launcher3;
-import com.android.launcher3.backup.BackupProtos;
import com.android.launcher3.backup.BackupProtos.CheckedMessage;
import com.android.launcher3.backup.BackupProtos.Favorite;
import com.android.launcher3.backup.BackupProtos.Key;
@@ -35,6 +34,8 @@ import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.lang.System;
+import java.util.LinkedList;
+import java.util.List;
import java.util.zip.CRC32;
import javax.xml.bind.DatatypeConverter;
@@ -46,7 +47,7 @@ import javax.xml.bind.DatatypeConverter;
* <P>When using com.android.internal.backup.LocalTransport, the file names are base64-encoded Key
* protocol buffers with a prefix, that have been base64-encoded again by the transport:
* <pre>
- * echo TDpDQUlnL0pxVTVnOD0= | base64 -D | dd bs=1 skip=2 | base64 -D | launcher_protoutil -k
+ * echo "TDpDQUlnL0pxVTVnOD0=" | launcher_protoutil -k
* </pre>
*
* <P>This tool understands these file names and will use the embedded Key to detect the type and
@@ -56,13 +57,19 @@ import javax.xml.bind.DatatypeConverter;
* </pre>
*
* <P>With payload debugging enabled, base64-encoded protocol buffers will be written to the logs.
- * Copy the encoded log snippet into a file, and specify the type explicitly:
+ * Copy the encoded snippet from the log, and specify the type explicitly, with the Logs flags:
* <pre>
- * base64 -D icon.log > icon.bin
- * launcher_protoutil -i icon.bin
+ * echo "CAEYLiCJ9JKsDw==" | launcher_protoutil -L -k
+ * </pre>
+ * For backup payloads it is more convenient to copy the log snippet to a file:
+ * <pre>
+ * launcher_protoutil -L -f favorite.log
* </pre>
*/
class DecoderRing {
+
+ public static final String STANDARD_IN = "**stdin**";
+
private static Class[] TYPES = {
Key.class,
Favorite.class,
@@ -74,24 +81,25 @@ class DecoderRing {
public static void main(String[ ] args)
throws Exception {
- File source = null;
- Class type = null;
+ Class defaultType = null;
boolean extractImages = false;
+ boolean fromLogs = false;
int skip = 0;
+ List<File> files = new LinkedList<File>();
for (int i = 0; i < args.length; i++) {
if ("-k".equals(args[i])) {
- type = Key.class;
+ defaultType = Key.class;
} else if ("-f".equals(args[i])) {
- type = Favorite.class;
+ defaultType = Favorite.class;
} else if ("-j".equals(args[i])) {
- type = Journal.class;
+ defaultType = Journal.class;
} else if ("-i".equals(args[i])) {
- type = Resource.class;
+ defaultType = Resource.class;
} else if ("-s".equals(args[i])) {
- type = Screen.class;
+ defaultType = Screen.class;
} else if ("-w".equals(args[i])) {
- type = Widget.class;
+ defaultType = Widget.class;
} else if ("-S".equals(args[i])) {
if ((i + 1) < args.length) {
skip = Integer.valueOf(args[++i]);
@@ -100,154 +108,180 @@ class DecoderRing {
}
} else if ("-x".equals(args[i])) {
extractImages = true;
+ } else if ("-L".equals(args[i])) {
+ fromLogs = true;
} else if (args[i] != null && !args[i].startsWith("-")) {
- source = new File(args[i]);
+ files.add(new File(args[i]));
} else {
System.err.println("Unsupported flag: " + args[i]);
usage(args);
}
}
- if (type == null) {
- if (source == null) {
- usage(args);
+ if (defaultType == null && files.isEmpty()) {
+ // can't infer file type without the key
+ usage(args);
+ }
+
+ if (files.size() > 1) {
+ System.err.println("Explicit type ignored for multiple files.");
+ defaultType = null;
+ }
+
+ if (files.isEmpty()) {
+ files.add(new File(STANDARD_IN));
+ }
+
+ for (File source : files) {
+ Class type = null;
+ if (defaultType == null) {
+ Key key = decodeKey(source.getName().getBytes(), fromLogs);
+ type = TYPES[key.type];
+ System.err.println("This is a " + type.getSimpleName() + " backup");
+ } else {
+ type = defaultType;
+ }
+
+ // read in the bytes
+ ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
+ BufferedInputStream input = null;
+ if (source.getName() == STANDARD_IN) {
+ input = new BufferedInputStream(System.in);
} else {
- Key key = new Key();
try {
- byte[] rawKey = DatatypeConverter.parseBase64Binary(source.getName());
- if (rawKey[0] != 'L' || rawKey[1] != ':') {
- System.err.println("you must specify the payload type. " +
- source.getName() + " is not a launcher backup key.");
- System.exit(1);
- }
- String encodedPayload = new String(rawKey, 2, rawKey.length - 2);
- byte[] keyProtoData = DatatypeConverter.parseBase64Binary(encodedPayload);
- key = Key.parseFrom(keyProtoData);
- } catch (InvalidProtocolBufferNanoException protoException) {
- System.err.println("failed to extract key from filename: " + protoException);
- System.exit(1);
- } catch (IllegalArgumentException base64Exception) {
- System.err.println("failed to extract key from filename: " + base64Exception);
- System.exit(1);
- }
- // keys are self-checked
- if (key.checksum != checkKey(key)) {
- System.err.println("key ckecksum failed");
+ input = new BufferedInputStream(new FileInputStream(source));
+ } catch (FileNotFoundException e) {
+ System.err.println("failed to open file: " + source + ", " + e);
System.exit(1);
}
- type = TYPES[key.type];
- System.err.println("This is a " + type.getSimpleName() + " backup");
}
- }
-
- // read in the bytes
- ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
- BufferedInputStream input = null;
- if (source == null) {
- input = new BufferedInputStream(System.in);
- } else {
+ byte[] buffer = new byte[1024];
try {
- input = new BufferedInputStream(new FileInputStream(source));
- } catch (FileNotFoundException e) {
- System.err.println("failed to open file: " + source + ", " + e);
+ while (input.available() > 0) {
+ int n = input.read(buffer);
+ int offset = 0;
+ if (skip > 0) {
+ offset = Math.min(skip, n);
+ n -= offset;
+ skip -= offset;
+ }
+ if (n > 0) {
+ byteStream.write(buffer, offset, n);
+ }
+ }
+ } catch (IOException e) {
+ System.err.println("failed to read input: " + e);
System.exit(1);
}
- }
- byte[] buffer = new byte[1024];
- try {
- while (input.available() > 0) {
- int n = input.read(buffer);
- int offset = 0;
- if (skip > 0) {
- offset = Math.min(skip, n);
- n -= offset;
- skip -= offset;
+
+ MessageNano proto = null;
+ byte[] payload = byteStream.toByteArray();
+ if (type == Key.class) {
+ proto = decodeKey(payload, fromLogs);
+ } else {
+ proto = decodeBackupData(payload, type, fromLogs);
+ }
+
+ // Generic string output
+ System.out.println(proto.toString());
+
+ if (extractImages) {
+ String prefix = "stdin";
+ if (source != null) {
+ prefix = source.getName();
+ }
+ // save off the icon bits in a file for inspection
+ if (proto instanceof Resource) {
+ Resource icon = (Resource) proto;
+ writeImageData(icon.data, prefix + ".png");
}
- if (n > 0) {
- byteStream.write(buffer, offset, n);
+
+ // save off the icon bits in a file for inspection
+ if (proto instanceof Favorite) {
+ Favorite favorite = (Favorite) proto;
+ if (favorite.iconType == ICON_TYPE_BITMAP) {
+ writeImageData(favorite.icon, prefix + ".png");
+ }
+ }
+
+ // save off the widget icon and preview bits in files for inspection
+ if (proto instanceof Widget) {
+ Widget widget = (Widget) proto;
+ if (widget.icon != null) {
+ writeImageData(widget.icon.data, prefix + "_icon.png");
+ }
+ if (widget.preview != null) {
+ writeImageData(widget.preview.data, prefix + "_preview.png");
+ }
}
}
- } catch (IOException e) {
- System.err.println("failed to read input: " + e);
- System.exit(1);
}
+ System.exit(0);
+ }
- MessageNano proto = null;
- if (type == Key.class) {
- Key key = new Key();
- try {
- key = Key.parseFrom(byteStream.toByteArray());
- } catch (InvalidProtocolBufferNanoException e) {
- System.err.println("failed to parse proto: " + e);
- System.exit(1);
- }
- // keys are self-checked
- if (key.checksum != checkKey(key)) {
- System.err.println("key checksum failed");
- System.exit(1);
- }
- proto = key;
- } else {
- // other types are wrapped in a checksum message
- CheckedMessage wrapper = new CheckedMessage();
- try {
- MessageNano.mergeFrom(wrapper, byteStream.toByteArray());
- } catch (InvalidProtocolBufferNanoException e) {
- System.err.println("failed to parse wrapper: " + e);
- System.exit(1);
- }
- CRC32 checksum = new CRC32();
- checksum.update(wrapper.payload);
- if (wrapper.checksum != checksum.getValue()) {
- System.err.println("wrapper checksum failed");
- System.exit(1);
- }
- // decode the actual message
- proto = (MessageNano) type.newInstance();
- try {
- MessageNano.mergeFrom(proto, wrapper.payload);
- } catch (InvalidProtocolBufferNanoException e) {
- System.err.println("failed to parse proto: " + e);
- System.exit(1);
+ // In logcat, backup data is base64 encoded, but in localtransport files it is raw
+ private static MessageNano decodeBackupData(byte[] payload, Class type, boolean fromLogs)
+ throws InstantiationException, IllegalAccessException {
+ MessageNano proto;// other types are wrapped in a checksum message
+ CheckedMessage wrapper = new CheckedMessage();
+ try {
+ if (fromLogs) {
+ payload = DatatypeConverter.parseBase64Binary(new String(payload));
}
+ MessageNano.mergeFrom(wrapper, payload);
+ } catch (InvalidProtocolBufferNanoException e) {
+ System.err.println("failed to parse wrapper: " + e);
+ System.exit(1);
}
- // Generic string output
- System.out.println(proto.toString());
-
- if (extractImages) {
- String prefix = "stdin";
- if (source != null) {
- prefix = source.getName();
- }
- // save off the icon bits in a file for inspection
- if (proto instanceof Resource) {
- Resource icon = (Resource) proto;
- writeImageData(icon.data, prefix + ".png");
- }
+ CRC32 checksum = new CRC32();
+ checksum.update(wrapper.payload);
+ if (wrapper.checksum != checksum.getValue()) {
+ System.err.println("wrapper checksum failed");
+ System.exit(1);
+ }
- // save off the icon bits in a file for inspection
- if (proto instanceof Favorite) {
- Favorite favorite = (Favorite) proto;
- if (favorite.iconType == ICON_TYPE_BITMAP) {
- writeImageData(favorite.icon, prefix + ".png");
- }
- }
+ // decode the actual message
+ proto = (MessageNano) type.newInstance();
+ try {
+ MessageNano.mergeFrom(proto, wrapper.payload);
+ } catch (InvalidProtocolBufferNanoException e) {
+ System.err.println("failed to parse proto: " + e);
+ System.exit(1);
+ }
+ return proto;
+ }
- // save off the widget icon and preview bits in files for inspection
- if (proto instanceof Widget) {
- Widget widget = (Widget) proto;
- if (widget.icon != null) {
- writeImageData(widget.icon.data, prefix + "_icon.png");
- }
- if (widget.preview != null) {
- writeImageData(widget.preview.data, prefix + "_preview.png");
+ // In logcat, keys are base64 encoded with no prefix.
+ // The localtransport adds a prefix and the base64 encodes the whole thing again.
+ private static Key decodeKey(byte[] payload, boolean fromLogs) {
+ Key key = new Key();
+ try {
+ String encodedKey = new String(payload);
+ if (!fromLogs) {
+ byte[] rawKey = DatatypeConverter.parseBase64Binary(encodedKey);
+ if (rawKey[0] != 'L' || rawKey[1] != ':') {
+ System.err.println(encodedKey + " is not a launcher backup key.");
+ System.exit(1);
}
+ encodedKey = new String(rawKey, 2, rawKey.length - 2);
}
+ byte[] keyProtoData = DatatypeConverter.parseBase64Binary(encodedKey);
+ key = Key.parseFrom(keyProtoData);
+ } catch (InvalidProtocolBufferNanoException protoException) {
+ System.err.println("failed to extract key from filename: " + protoException);
+ System.exit(1);
+ } catch (IllegalArgumentException base64Exception) {
+ System.err.println("failed to extract key from filename: " + base64Exception);
+ System.exit(1);
}
- // success
- System.exit(0);
+ // keys are self-checked
+ if (key.checksum != checkKey(key)) {
+ System.err.println("key ckecksum failed");
+ System.exit(1);
+ }
+ return key;
}
private static void writeImageData(byte[] data, String path) {
@@ -289,6 +323,7 @@ class DecoderRing {
System.err.println("\t-w\tdecode a widget");
System.err.println("\t-S b\tskip b bytes");
System.err.println("\t-x\textract image data to files");
+ System.err.println("\t-l\texpect data from logcat, instead of the local transport");
System.err.println("\tfilename\tread from filename, not stdin");
System.exit(1);
}