Handle apks that utilize Shared Resources

- shared resource is currently hardcoded to pkgId 2 like AOSP
 - merry christmas

CHANGES

@@ -50,6 +50,8 @@ v2.0.0 (TBA)
 -Fixed (issue #689) - Fixed issue with hard coding extension as PNG.
 -Fixed (issue #653) - Added Android Lollipop support.
 -Fixed (issue #706) - Added support for TYPE_DYNAMIC_REFERENCE.
+-Fixed (issue #685) - Fixed invalid attrs values with Android Lollipop.
+-Fixed (issue #713) - Fixed issue with packages that had shared library resources.
 -Fixed issue with APKs with multiple dex files.
 -Fixed issue with using Apktool without smali/baksmali for ApktoolProperties (Thanks teprrr)
 -Fixed issue with non-URI standard characters in apk name (Thanks rover12421)

brut.apktool/apktool-lib/src/main/java/brut/androlib/res/decoder/ARSCDecoder.java

@@ -83,6 +83,15 @@ public class ARSCDecoder {
     private ResPackage readPackage() throws IOException, AndrolibException {
         checkChunkType(Header.TYPE_PACKAGE);
         int id = (byte) mIn.readInt();
+
+        if (id == 0) {
+            // This means we are dealing with a Library Package, we should just temporarily
+            // set the packageId to the next available id . This will be set at runtime regardless, but
+            // for Apktool's use we need a non-zero packageId.
+            // AOSP indicates 0x02 is next, as 0x01 is system and 0x7F is private.
+            id = 2;
+        }
+
         String name = mIn.readNullEndedString(128, true);
 		/* typeStrings */mIn.skipInt();
 		/* lastPublicType */mIn.skipInt();
@@ -96,6 +105,10 @@ public class ARSCDecoder {
         mPkg = new ResPackage(mResTable, id, name);
 
         nextChunk();
+        while (mHeader.type == Header.TYPE_LIBRARY) {
+            readLibraryType();
+        }
+
         while (mHeader.type == Header.TYPE_TYPE) {
             readType();
         }
@@ -103,6 +116,24 @@ public class ARSCDecoder {
         return mPkg;
     }
 
+    private void readLibraryType() throws AndrolibException, IOException {
+        checkChunkType(Header.TYPE_LIBRARY);
+        int libraryCount = mIn.readInt();
+
+        int packageId;
+        String packageName;
+
+        for (int i = 0; i < libraryCount; i++) {
+            packageId = mIn.readInt();
+            packageName = mIn.readNullEndedString(128, true);
+            LOGGER.info(String.format("Decoding Shared Library (%s), pkgId: %d", packageName, packageId));
+        }
+
+        while(nextChunk().type == Header.TYPE_CONFIG) {
+            readConfig();
+        }
+    }
+
     private ResType readType() throws AndrolibException, IOException {
         checkChunkType(Header.TYPE_TYPE);
         byte id = mIn.readByte();
@@ -370,7 +401,7 @@ public class ARSCDecoder {
         }
 
         public final static short TYPE_NONE = -1, TYPE_TABLE = 0x0002,
-                TYPE_PACKAGE = 0x0200, TYPE_TYPE = 0x0202,
+                TYPE_PACKAGE = 0x0200, TYPE_TYPE = 0x0202, TYPE_LIBRARY = 0x0203,
                 TYPE_CONFIG = 0x0201;
     }