Android 14 - compact resource entries

[iBotPeaches]

Steps

• Docs
• Sample
• Patch

---

aosp-mirror/platform_frameworks_base@368cd19

---

    enum {
        // If set, this is a complex entry, holding a set of name/value
        // mappings.  It is followed by an array of ResTable_map structures.
        FLAG_COMPLEX = 0x0001,
        // If set, this resource has been declared public, so libraries
        // are allowed to reference it.
        FLAG_PUBLIC = 0x0002,
        // If set, this is a weak resource and may be overriden by strong
        // resources of the same name/type. This is only useful during
        // linking with other resource tables.
        FLAG_WEAK = 0x0004,
        // If set, this is a compact entry with data type and value directly
        // encoded in the this entry, see ResTable_entry::compact
        FLAG_COMPACT = 0x0008,
    };

    /* A compact entry is indicated by FLAG_COMPACT, with flags at the same
     * offset as a normal entry. This is only for simple data values where
     *
     * - size for entry or value can be inferred (both being 8 bytes).
     * - key index is encoded in 16-bit
     * - dataType is encoded as the higher 8-bit of flags
     * - data is encoded directly in this entry
     */
    struct Compact {
        uint16_t key;
        uint16_t flags;
        uint32_t data;
    } compact;

[iBotPeaches]

➜  Issue3366 git:(master) ✗ ./build.sh                                                                   
note: including /home/ibotpeaches/.local/share/apktool/framework/1.apk.
note: linking package 'com.ibotpeaches.issue3366' using package ID 7f.
note: merging archive compiled.zip.
note: collapsing resource versions for minimum SDK 34.
AndroidManifest.xml: note: writing to archive (keep_raw_values=false).
note: writing AndroidManifest.xml to archive.
note: writing resources.arsc to archive.
➜  Issue3366 git:(master) 

➜  Issue3366 git:(master) ✗ /home/ibotpeaches/Android/Sdk/build-tools/34.0.0/aapt2 d chunks issue3366.apk
[ResTable_header] chunkSize: 552 headerSize: 12 Package count: 1
  [RES_STRING_POOL_TYPE] chunkSize: 44 headerSize: 28
  #0 : Issue3366
  [ResTable_package] chunkSize: 496 headerSize: 288 id: 0x7fname: com.ibotpeaches.issue3366 typeStrings: 288 lastPublicType: 0 keyStrings: 336 lastPublicKey: 0 typeIdOffset: 0
    [RES_STRING_POOL_TYPE] chunkSize: 48 headerSize: 28
    #0 : string
    [RES_STRING_POOL_TYPE] chunkSize: 44 headerSize: 28
    #0 : app_name
    [RES_TABLE_TYPE_SPEC_TYPE] chunkSize: 20 headerSize: 16
    [ResTable_type] chunkSize: 96 headerSize: 84 id: 0x01 name: string flags: 0x02 entryCount: 1 entryStart: 88 config: 
      [ResTable_entry_compact] id: 0x0000 name: app_name keyIndex: 0 size: 8 flags: 0x0308
        [Res_value] size: 8 dataType: 0x03 data: 0x00000000 ("Issue3366")
[End]

issue3366.apk.zip, with source here: iBotPeaches/TestApks@e99f9c3

As expected

➜  Issue3366 git:(master) ✗ apktool d issue3366.apk 
Picked up _JAVA_OPTIONS: -Dawt.useSystemAAFontSettings=on -Dswing.aatext=true
I: Using Apktool v2.8.1-85-00c7eeeb-SNAPSHOT on issue3366.apk
I: Loading resource table...
W: Please report this application to Apktool for a fix: https://github.com/iBotPeaches/Apktool/issues/3367
Exception in thread "main" brut.androlib.exceptions.AndrolibException: Unexpected TYPE_FLAG_OFFSET16