CM Grouper from source

Grouper is an N7 tablet with only wifi and without integrated 3G support, that means that Baseband Processor related insecurity does not bother you on this device. It has been included in AOSP project for a long time. With easy-to-acquire source code and binary blobs it has become very popular amongs rom fiddlers and hackers.

Useful CM compiling related links

Cherry-picking SlimRecents to CM 12.1

This guide is example of succesfull cherry-pick of slightly advanced feature to android OS. Purpose of this guide is to show an easy approach to cherry-picking more complex features in case you have almost no experience with Android, git and programming itself. I would like to declare this approach as cargo-cult cherry picking due to methodology used in this guide. It is not straight-forward guide how to pick feature, instead it shows how to sucesfully resolve conflicts. It also shows a few dead ends as example of what you (and I) could overlook. I do not declare that this implementation of slimrecent is good or anything near to it. It is just guide/tutorial on how to cherry-pick slightly more complex feature, nothing more.

Setting-up enviroment

First you need to set up nice working enviroment (ugly part will come pretty fast). This guide was tested on Nexus 2012 (wifi) (aka grouper) with CM12.1 as source.

follow build from source guide
dont forget to extract proprietary blobs
try to compile clean code (without cherry-pick) first and test it on your device , if something doesnt work try to read build from source guide carefully.

Find commit you want to cherry pick

In our case it is this commit.
It is very helpful to see this commit already cherry-picked in another project, in my case I used TeamTwisted and CarbonROM as guides. Best scenario is to find ROMs which are very similar to your source code (so with almost no features implemented).
By checking commited files history it is obvious that they performed clean-up after cherry-pick: TT cleanup , CR cleanup in CR they cleaned up after more commits, so there is some unrelated stuff too.

Getting new repo

If you read original commit description , you will notice that this patch needs a new repo: frameworks_opt_cards which is a central repo to get any kind of googles cards style. (it is first note in commit description).

Add frameworks_opt_cards repo: you need to edit ~/android/system/.repo/manifests/default.xml

First add SlimRoms remote

 
  1 <?xml version="1.0" encoding="UTF-8"?>
  2 <manifest>
  3 
  4   <remote  name="aosp"
  5            fetch="https://android.googlesource.com"
  6            review="android-review.googlesource.com"
  7            revision="refs/tags/android-5.1.1_r26" />
  8 
  9   <remote  name="github"
 10            fetch=".."
 11            review="review.cyanogenmod.org" />
 12 
 13   <remote  name="private"
 14            fetch="ssh://[email protected]" />
 15 
 16   <remote  name="slimrom"
 17            fetch="https://github.com/SlimRoms/" />
 18 
 19   <default revision="refs/heads/cm-12.1"
 20            remote="github"
 21            sync-c="true"
 22            sync-j="4" />

....
....
....

Than you can easily add frameworks_opt_cards repo

....
....
....
594   <project path="vendor/cm" name="CyanogenMod/android_vendor_cm" />
595   <project path="vendor/cmsdk" name="CyanogenMod/cm_platform_sdk" />
596   <project path="frameworks/opt/cards" name="frameworks_opt_cards" remote="slimrom" revision="lp5.1" />

Cherry pick

Now comes the first attempt to cherry pick slimrecents commit from SlimRoms following this useful guide:

$cd ~/android/system/frameworks/base
$git fetch https://github.com/SlimRoms/frameworks_base.git

It should take some time.. After we fetch the repo it's finally time to perform cherry-pick

$git cherry-pick 2b4aea893a916cf7f60b3c809f5a7bc616041058

After few seconds you should get something that looks approximately like this

error: could not apply 2b4aea8... Frameworks: Slim Recents app screen (1/2)
hint: after resolving the conflicts, mark the corrected paths
hint: with 'git add <paths>' or 'git rm <paths>'
hint: and commit the result with 'git commit'

Git told you by this that there are some conflicts which need to be resolved manually.

By typing

$git status

You get long list of changes to be commited and on the bottom there are few files in red color, in this case:

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)

        both modified:      core/java/android/view/IWindowManager.aidl
        deleted by us:      core/res/res/values/slim_symbols.xml
        both modified:      packages/SystemUI/Android.mk
        both modified:      packages/SystemUI/res/values/config.xml
        deleted by us:      packages/SystemUI/res/values/slim_colors.xml
        both modified:      packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
        both modified:      packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

In these files you need to resolve conflicts manually.

Resolving conflicts

both modified: core/java/android/view/IWindowManager.aidl

<<<<<<< HEAD
283 =======
284 
285     /**
286      * Toggle global menu
287      *
288      * @hide
289      */
290     void toggleGlobalMenu();
291 
292     /**
293      * Get current system ui visibility mode.
294      *
295      * @hide
296      */
297     int getSystemUIVisibility();
298 >>>>>>> 2b4aea8... Frameworks: Slim Recents app screen (1/2)
299 }

Probably no big deal, lets try to implement those few lines, probably no one gets hurt.

deleted by us: core/res/res/values/slim_symbols.xml

When you look into file you see some symbol definitions, probably nothing to edit.

both modified: packages/SystemUI/Android.mk

 13 <<<<<<< HEAD
 14     org.cyanogenmod.platform.sdk
 15 =======
 16     android-opt-cards
 17 >>>>>>> 2b4aea8... Frameworks: Slim Recents app screen (1/2)

It looks like that in slimrecent they dont use org.cyanogenmod.platform.sdk package (how unexpected.. ) and in SR they need android-opt-cards (which author mentioned in the initial commit for SlimRecents). Let both live freely.

both modified: packages/SystemUI/res/values/config.xml

326 <<<<<<< HEAD
327 =======
328 
329     <bool name="config_enablePerfBoostForShutterAnimation">false</bool>
330     <integer name="shutteranimationboost_timeout_param">0</integer>
331     <integer name="shutteranimationboost_schedboost_param">0</integer>
332     <integer name="shutteranimationboost_cpuboost_param">0</integer>
333 
334     <!-- Sensivity of pie gestures controlls.
335         Must be minimum 1 and maximum 10 (See @EdgeServiceConstants.java).
336         Default for pie is high sensivity -->
337     <integer name="pie_gesture_sensivity">8</integer>
338 
339     <!-- Default value how much apps show the app screenshot on recents view entry -->
340     <integer name="expanded_items_default">2</integer>
341 
342 >>>>>>> 2b4aea8... Frameworks: Slim Recents app screen (1/2)

That looks interesting, lets take a closer look: in github entry of cherrypicked commit we see that only value which was modified (added in this case) was expanded_items_default. Other stuff looks like unrelated, so lets delete it. If it is something important, we will probably notice soon.

deleted by us: packages/SystemUI/res/values/slim_colors.xml

  1 <?xml version="1.0" encoding="utf-8"?>
  2 <!--
  3      Copyright (C) 2015 The SlimRoms Project
  4      Copyright (C) 2014 The CyanogenMod Project
  5 
  6      Licensed under the Apache License, Version 2.0 (the "License");
  7      you may not use this file except in compliance with the License.
  8      You may obtain a copy of the License at
  9 
 10           http://www.apache.org/licenses/LICENSE-2.0
 11 
 12      Unless required by applicable law or agreed to in writing, software
 13      distributed under the License is distributed on an "AS IS" BASIS,
 14      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15      See the License for the specific language governing permissions and
 16      limitations under the License.
 17 -->
 18 <resources>
 19 
 20     <!-- tint of the Visualizer tile -->
 21     <color name="visualizer_fill_color">#96FFFFFF</color>
 22     <color name="battery_level_color">#ffffffff</color>
 23 
 24     <!-- Quick tile text color when the tile is disabled -->
 25     <color name="qs_tile_text_disabled">#ff747474</color>
 26 
 27     <!-- Recents -->
 28     <color name="recents_empty_dark_color">#ff4d4d4d</color>
 29     <color name="recents_empty_light_color">#ffb3b3b3</color>
 30 
 31     <!-- Slim recent -->
 32     <color name="recent_background">#80000000</color>
 33 
 34     <!-- Card Color -->
 35     <color name="card_background">#ffffffff</color>
 36     <color name="card_background_header">#00ffffff</color>
 37     <color name="card_backgroundExpand">#00ffffff</color>
 38 
 39     <color name="card_text_color_header">#ff000000</color>
 40 
 41     <!-- Used by selector -->
 42     <color name="card_pressed">#7e3c3c3c</color>
 43 
 44 </resources>

Looks like Cyanogenmod deprecated this config, as we see in github entry of cherrypicked commit only few things were added, lets delete stuff which is probably unrelated analogously to previous file. Now it looks like this:

  1 <?xml version="1.0" encoding="utf-8"?>
  2 <!--
  3      Copyright (C) 2015 The SlimRoms Project
  4      Copyright (C) 2014 The CyanogenMod Project
  5 
  6      Licensed under the Apache License, Version 2.0 (the "License");
  7      you may not use this file except in compliance with the License.
  8      You may obtain a copy of the License at
  9 
 10           http://www.apache.org/licenses/LICENSE-2.0
 11 
 12      Unless required by applicable law or agreed to in writing, software
 13      distributed under the License is distributed on an "AS IS" BASIS,
 14      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15      See the License for the specific language governing permissions and
 16      limitations under the License.
 17 -->
 18 <resources>
 19 
 20     <!-- Recents -->
 21     <color name="recents_empty_dark_color">#ff4d4d4d</color>
 22     <color name="recents_empty_light_color">#ffb3b3b3</color>
 23 
 24     <!-- Slim recent -->
 25     <color name="recent_background">#80000000</color>
 26 
 27     <!-- Card Color -->
 28     <color name="card_background">#ffffffff</color>
 29     <color name="card_background_header">#00ffffff</color>
 30     <color name="card_backgroundExpand">#00ffffff</color>
 31     
 32     <color name="card_text_color_header">#ff000000</color>
 33 
 34     <!-- Used by selector -->
 35     <color name="card_pressed">#7e3c3c3c</color>
 36     
 37 </resources>

both modified: packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java

 101 <<<<<<< HEAD
 102 =======
 103 import com.android.systemui.slimrecent.RecentController;
 104 import com.android.systemui.statusbar.phone.NavigationBarOverlay;
 105 import com.android.systemui.statusbar.policy.PieController;
 106 >>>>>>> 2b4aea8... Frameworks: Slim Recents app screen (1/2)

RecentControler and NavigationBarOverlay looks valid as it is only thing which was added by commit

Lets delete the rest.

both modified: packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

 486 <<<<<<< HEAD
 487 =======
 488             resolver.registerContentObserver(Settings.System.getUriFor(
 489                     Settings.System.HEADS_UP_SNOOZE_TIME),
 490                     false, this, UserHandle.USER_ALL);
 491             resolver.registerContentObserver(Settings.System.getUriFor(
 492                     Settings.System.PIE_CONTROLS), false, this,
 493                     UserHandle.USER_ALL);
 494             resolver.registerContentObserver(Settings.System.getUriFor(
 495                     Settings.System.USE_SLIM_RECENTS), false, this,
 496                     UserHandle.USER_ALL);
 497             resolver.registerContentObserver(Settings.System.getUriFor(
 498                     Settings.System.RECENT_CARD_BG_COLOR), false, this,
 499                     UserHandle.USER_ALL);
 500             resolver.registerContentObserver(Settings.System.getUriFor(
 501                     Settings.System.RECENT_CARD_TEXT_COLOR), false, this,
 502                     UserHandle.USER_ALL);
 503 >>>>>>> 2b4aea8... Frameworks: Slim Recents app screen (1/2)

Here once again - we probably need only SlimRecents related stuff, that means: USE_SLIM_RECENTS ; RECENT_CARD_BG_COLOR ; RECENT_CARD_TEXT_COLOR

 546 <<<<<<< HEAD
 547 =======
 548             } else if (uri.equals(Settings.System.getUriFor(
 549                     Settings.System.NAVIGATION_BAR_CAN_MOVE))) {
 550                 prepareNavigationBarView();
 551             } else if (uri.equals(Settings.System.getUriFor(
 552                     Settings.System.USE_SLIM_RECENTS))) {
 553                 updateRecents();
 554             } else if (uri.equals(Settings.System.getUriFor(
 555                     Settings.System.RECENT_CARD_BG_COLOR))
 556                     || uri.equals(Settings.System.getUriFor(
 557                     Settings.System.RECENT_CARD_TEXT_COLOR))) {
 558                 rebuildRecentsScreen();
 559 >>>>>>> 2b4aea8... Frameworks: Slim Recents app screen (1/2)

Here it looks like it is little bit out of context (things which are near do not look like related stuff).

 532             if (oldClockView != mClockView) {
 533                 // if the new clock position is outside the system icon area, make the alp     ha
 534                 // and visibility match the system icon area alpha/visibility
 535                 if (isClockLocationOutsideSystemIconArea(mClockLocation)) {
 536                     mClockView.setAlpha(mSystemIconArea.getAlpha());
 537                     mClockView.setVisibility(mSystemIconArea.getVisibility());
 538                 }
 539 
 540                 // if the old clock position it outside the system icon area, make it opaq     ue
 541                 // and set visibility to gone
 542                 if (isClockLocationOutsideSystemIconArea(oldClockLocation)) {
 543                     oldClockView.setAlpha(1f);
 544                     oldClockView.setVisibility(View.GONE);
 545                 }
 546 <<<<<<< HEAD
 547 =======
 548             } else if (uri.equals(Settings.System.getUriFor(
 549                     Settings.System.NAVIGATION_BAR_CAN_MOVE))) {
 550                 prepareNavigationBarView();
 551             } else if (uri.equals(Settings.System.getUriFor(
 552                     Settings.System.USE_SLIM_RECENTS))) {
 553                 updateRecents();
 554             } else if (uri.equals(Settings.System.getUriFor(
 555                     Settings.System.RECENT_CARD_BG_COLOR))
 556                     || uri.equals(Settings.System.getUriFor(
 557                     Settings.System.RECENT_CARD_TEXT_COLOR))) {
 558                 rebuildRecentsScreen();
 559 >>>>>>> 2b4aea8... Frameworks: Slim Recents app screen (1/2)
 560             }
 561 
 562             boolean navLeftInLandscape = Settings.System.getIntForUser(resolver,
 563                     Settings.System.NAVBAR_LEFT_IN_LANDSCAPE, 0, UserHandle.USER_CURRENT)      == 1;
 564             if (mNavigationBarView != null) {
 565                 mNavigationBarView.setLeftInLandscape(navLeftInLandscape);
 566             }

“if (oldClockView != mClockView)” and “else if uri.equals” dont look like they are even closely related. Let search for some “uri.equals” in CM original code → nothing. Lets look into SR git source code at the time of commit .

From SR source code we can see that it is under public void onChange(boolean selfChange, Uri uri) void.

We have public void onChange with variable selfChange but without variable uri, and code uses parameter uri. That means we need to add new void to our source code and put that few lines into it, or try to delete it and see the result. First we try to delete it, if it causes some troubles we could try to implement new onChange function.

Now lets try to compile

$ cd ~/android/system/
$ source build/envsetup.sh
$ breakfast grouper
$ croot
$ brunch grouper

after a while..

....
HOST_OS_EXTRA=Linux-3.13.0-32-generic-x86_64-with-Ubuntu-14.04-trusty
HOST_BUILD_TYPE=release
BUILD_ID=LMY48Y
OUT_DIR=/home/maker/android/system/out
============================================
"ebtables is disabled on this build"
make: Entering directory `/home/maker/android/system'
frameworks/base/packages/SystemUI/Android.mk:14: *** missing separator.  Stop.
make: Leaving directory `/home/maker/android/system'

#### make failed to build some targets (04:04 (mm:ss)) ####

Little mistake ..

$ vi frameworks/base/packages/SystemUI/Android.mk

before:

  ... 
  9 LOCAL_STATIC_JAVA_LIBRARIES := Keyguard \
 10     android-support-v7-palette \
 11     android-support-v4 \
 12     android-visualizer \
 13     org.cyanogenmod.platform.sdk
 14     android-opt-cards
  ...

after:

...
 13     org.cyanogenmod.platform.sdk \
 14     android-opt-cards

And again

$ brunch grouper

after a while..

...
frameworks/base/core/res/res/values/slim_symbols.xml:116: error: Symbol 'ic_shortcut_action_pie' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:117: error: Symbol 'ic_shortcut_action_power' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:118: error: Symbol 'ic_shortcut_action_power_menu' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:119: error: Symbol 'ic_shortcut_action_quicksettings' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:120: error: Symbol 'ic_shortcut_action_recent' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:121: error: Symbol 'ic_shortcut_action_ring_vib_silent' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:122: error: Symbol 'ic_shortcut_action_screenshot' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:123: error: Symbol 'ic_shortcut_action_search' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:100: error: Symbol 'ic_shortcut_action_silent' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:101: error: Symbol 'ic_shortcut_action_theme_switch' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:102: error: Symbol 'ic_shortcut_action_torch' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:103: error: Symbol 'ic_shortcut_action_vib' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:125: error: Symbol 'ic_shortcut_action_volume_panel' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:78: error: Symbol 'disable_navigation_pie_error' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:72: error: Symbol 'disable_pie_navigation_error' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:76: error: Symbol 'global_actions_nav_bar_mode_off_status' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:75: error: Symbol 'global_actions_nav_bar_mode_on_status' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:70: error: Symbol 'global_actions_pie_mode_off_status' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:69: error: Symbol 'global_actions_pie_mode_on_status' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:129: error: Symbol 'notification_flashlight_on_summary' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:128: error: Symbol 'notification_flashlight_on_title' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:41: error: Symbol 'permission' declared with <java-symbol> not defined

frameworks/base/core/res/res/values/slim_symbols.xml:61: error: Symbol 'reboot_system' declared with <java-symbol> not defined

make: *** [/home/maker/android/system511/out/target/common/obj/APPS/framework-res_intermediates/package-export.apk] Error 1
make: *** Deleting file `/home/maker/android/system511/out/target/common/obj/APPS/framework-res_intermediates/package-export.apk'
make: Leaving directory `/home/maker/android/system511'

#### make failed to build some targets (02:42 (mm:ss)) ####

Looks like slim_symbols.xml need some changes..

$ vi frameworks/base/core/res/res/values/slim_symbols.xml

  1 <?xml version="1.0" encoding="utf-8"?>
  2 <!--
  3 /* Copyright 2013-2015, SlimRoms project
  4 **
  5 ** Licensed under the Apache License, Version 2.0 (the "License");
  6 ** you may not use this file except in compliance with the License.
  7 ** You may obtain a copy of the License at
  8 **
  9 **     http://www.apache.org/licenses/LICENSE-2.0
 10 **
 11 ** Unless required by applicable law or agreed to in writing, software
 12 ** distributed under the License is distributed on an "AS IS" BASIS,
 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 14 ** See the License for the specific language governing permissions and
 15 ** limitations under the License.
 16 */
 17 -->
 18 <resources>
 19 
 20   <!-- Slim recent app screen-->
 21   <java-symbol type="integer" name="config_recentDefaultDur" />
 22   <java-symbol type="integer" name="config_recentExitDur" />
 23   <java-symbol type="style" name="Animation.RecentScreen" />
 24   <java-symbol type="style" name="Animation.RecentScreen.Left" />
 25   <java-symbol type="anim" name="recent_screen_enter" />
 26   <java-symbol type="anim" name="recent_screen_enter_left" />
 27   <java-symbol type="anim" name="recent_screen_fade_out" />
 28   
 29 </resources>

this should do the trick..

And again

$ brunch grouper

make: *** No rule to make target `/home/maker/android/system511/out/target/common/obj/JAVA_LIBRARIES/android-opt-cards_intermediates/javalib.jar',
needed by `/home/maker/android/system511/out/target/common/obj/APPS/SystemUI_intermediates/classes-full-debug.jar'.  Stop.
make: *** Waiting for unfinished jobs....

Lets try if it isnt some compilation garbage..

$ make clean
$ breakfast grouper
$ croot
$ brunch grouper

and delete all files in ccache

still same .. lets think for a while..

whoops.. we (I) forgot to sync new repo.. no pain no gain.

syncing new repo

$ repo sync

continue with cherry-pick

now we should be back on track..

$ source build/envsetup
$ breakfast grouper
$ croot
$ brunch grouper

if you really deleted all your ccache and commited make clean command now its time for you to grab a beer and have some real-life. if not then you're lucky and next compilation should take less time.

....
target Java: SettingsProvider (/home/maker/android/system/out/target/common/obj/APPS/SettingsProvider_intermediates/classes)
Install: /home/maker/android/system/out/target/product/grouper/system/priv-app/SharedStorageBackup/SharedStorageBackup.apk
target Static Jar: Keyguard (/home/maker/android/system/out/target/common/obj/JAVA_LIBRARIES/Keyguard_intermediates/javalib.jar)
target Package: Tag (/home/maker/android/system/out/target/product/grouper/obj/APPS/Tag_intermediates/package.apk)
frameworks/base/services/core/java/com/android/server/wm/WindowManagerService.java:163: error: WindowManagerService is not abstract 
and does not override abstract method toggleGlobalMenu() in IWindowManager
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
public class WindowManagerService extends IWindowManager.Stub
       ^
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 error
make: packages/apps/Tag/res/drawable-hdpi/tag_scan_illustration.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited
*** [/home/maker/android/system511/out/target/common/obj/JAVA_LIBRARIES/services.core_intermediates/classes-full-debug.jar] Error 41
make: *** Waiting for unfinished jobs....
Warning: AndroidManifest.xml already defines versionCode (in http://schemas.android.com/apk/res/android); using existing value in manifest.
Warning: AndroidManifest.xml already defines versionName (in http://schemas.android.com/apk/res/android); using existing value in manifest.
DroidDoc took 17 sec. to write docs to /home/maker/android/system/out/target/common/docs/system-api-stubs
make: Leaving directory `/home/maker/android/system'

#### make failed to build some targets (02:58:55 (hh:mm:ss)) ####

lets check SlimRom version of file

....
    @Override
    public float getCurrentAnimatorScale() {
        synchronized(mWindowMap) {
            return mAnimationsDisabled ? 0 : mAnimatorDurationScaleSetting;
        }
    }

    /* @hide */
     @Override
    public void toggleGlobalMenu() {
        mPolicy.toggleGlobalMenu();
    }

    void dispatchNewAnimatorScaleLocked(Session session) {
        mH.obtainMessage(H.NEW_ANIMATOR_SCALE, session).sendToTarget();
    }

    @Override
    public void registerPointerEventListener(PointerEventListener listener) {
        mPointerEventDispatcher.registerInputEventListener(listener);
    }

...

lets add void toggleGlobalMenu() and see result.

frameworks/base/services/core/java/com/android/server/wm/WindowManagerService.java:5676: error: cannot find symbol
        mPolicy.toggleGlobalMenu();
               ^
  symbol:   method toggleGlobalMenu()
  location: variable mPolicy of type WindowManagerPolicy
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 error
make: *** [/home/maker/android/system/out/target/common/obj/JAVA_LIBRARIES/services.core_intermediates/classes-full-debug.jar] Error 41
make: *** Waiting for unfinished jobs....
....
....
make: Leaving directory `/home/maker/android/system'

#### make failed to build some targets (06:25 (mm:ss)) ####

So something in WindowManagePolicy and that GlobalMenu..

 $ cd ~/android/system/frameworks/base
 $ find  . -name WindowManagerPolicy*
./core/java/com/android/internal/view/WindowManagerPolicyThread.java
./core/java/android/view/WindowManagerPolicyControl.java
./core/java/android/view/WindowManagerPolicy.java

Lets look at WindowManagerPolicy.java - slimrom version

....
....
    /**
     * Notifies the keyguard to start fading out.
     *
     * @param startTime the start time of the animation in uptime milliseconds
     * @param fadeoutDuration the duration of the exit animation, in milliseconds
     */
    public void startKeyguardExitAnimation(long startTime, long fadeoutDuration);

    /**
     * Toggle global menu
     *
     * @hide
     */
    public void toggleGlobalMenu();
}

just add toggleGlobalMenu as implemented in SlimRom and see what happens.

frameworks/base/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java:150:
error: PhoneWindowManager is not abstract and does not override abstract method toggleGlobalMenu() 
in WindowManagerPolicy
public class PhoneWindowManager implements WindowManagerPolicy {
       ^
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
1 error

Global menu everywhere !!! .. it is NOT part of original slimrecents commit → lets try to get rid of it..

s&d:

 $ cd ~/android/system/frameworks/base
 $ grep -RE toggleGlobalMenu
core/java/android/view/IWindowManager.aidl:    void toggleGlobalMenu();
core/java/android/view/WindowManagerPolicy.java:    public void toggleGlobalMenu();

search is finished, now you juts get rid of it..

and brunch again

Package Complete: /home/maker/android/system/out/target/product/grouper/cm-12.1-20151229-UNOFFICIAL-grouper.zip
make: Leaving directory `/home/maker/android/system'

#### make completed successfully (33:21 (mm:ss)) ####

Now is time for runtime..

And everything looks like Oook.

checking for problems/bugs

 $ adb logcat

E/WindowManager(  520): Unknown window type: 2033

boot into some official snapsoht: no errors in the logcat, probably fault on our implementation side. But the feature works, so who cares. When you try to google it, you see that you're not alone.

Commiting cherry-pick

$ cd frameworks/base/
$ git status
$ git add --all
$ git commit

Conclusion

If you went through whole tutorial, you sucesfully implemented SlimRecents to your ROM in cargo-cult fashion. To be nice-coded you should:

Go through codes and understand a little logic behind whole slimrecent feature
Try to make some nice settings button to switch between normal Recents and SlimRecents, or remove normal recents - now it is a dead code in your rom
Get rid of error “Unknown Window type” by solving it.

Debundling build & GAPPS

Cyanogenmod comes with many bundled features which i never use. If you want to remove them here are list of things which i found to be probably safe to remove.

For further reading Barebones entry on CM wiki is pretty useful.

Debundling CM build

i used nice script for finding correct .mk files which needed to be modified (thx. 2 da3m0n22)

grep -RE $UnwantedPackage --include *.mk

Dont forget to remove already compiled packages in /out directory

compiled app adresses:

out/target/product/grouper/system/app/
out/target/product/grouper/system/priv-app/

ThemeChooser

removed vendor/cm/config/theme_common.mk
in vendor/cm/config/common.mk removed include vendor/cm/config/themes_common.mk (line 130)
remove it from settings

Wallpapers

in vendor/cm/config/common_full.mk removed

  9     Galaxy4 \
 10     HoloSpiralWallpaper \
 11     LiveWallpapers \
 12     LiveWallpapersPicker \
 13     MagicSmokeWallpapers \
 14     NoiseField \
 15     PhaseBeam \
 16     VisualizationWallpapers \

CM related stuff

in vendor/cm/config/common.mk removed

147     CMWallpapers \
151     CMUpdater \
152     CMAccount \

SetupWizard & OneTimeInit

in build/target/product/generic_no_telephony.mk removed
```
26     OneTimeInitializer \
```
in vendor/cm/config/common.mk
```
151     CyanogenSetupWizard \
```

Do not forget to:

turn settings → location off
turn settings → wifi off
turn settings → privacy → send debug data off

WAPPushManager

marked as invasive from: https://blog.torproject.org/blog/mission-impossible-hardening-android-security-and-privacy

in build/target/product/full_base.mk remove
```
24     WAPPushManager
```

dont forget to delete “/” sign in line 23

Debundling GAPPS

I used OpenGApps Pico package as starting point.

After installing GApps zip file through TWRP i removed in agreement with this TOR outdated but still helpful guide those applications:

in /system/app/:

GoogleCalendarSyncAdapter
GoogleContactsSyncAdapter

in /system/priv-app

GooglePartnerSetup
GoogleOneTimeInitializer
GoogleFeedback
GoogleBackupTransport

I also tried to remove SetupWizard in priv-apps. Result was booting rom which was in pretty unstable state, logcat was still mumbling something about

I/WindowManager(  475): Not starting activity because user setup is in progress: Intent 
{ act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10200000 }

And I didnt want to argue with GApps that user setup is really not in progress so i putted SetupWizard back and everything was fine.

in Settings → Accounts → Google → click on [email protected] and Turn Sync OFF.

Debundling links, tips & tricks

This Gapps feature looks interesting for more automatized way of doing cleanup.
How to get info about app from app ID:
```
#vi /data/system/packages.xml 
```
(thx 2 Lie Ryan)
AfWall could be useful for detection of leaking apps, but it's good to know that it is not unbreakable

Conclusion

Even after all those gently hints to google like “Turn sync off” and removing applications for GoogleSync Google just love to hear from to you, or better interpreted: carefully listens to your needs. (CONNECT android.clients.google.com:443 ; CONNECT play.googleapis.com:443). After blacklisting Google Play Store in AfWall it looks like device is almost silent. (only GET http://connectivitycheck.android.com remains and it is plaintext probably with almost no data and few DNS queries, ussually for NTP servers). Field data is in nice correlation with Jenda's observations

Modify Settings(.apk) source

When you modify your rom heavily it is good to accordingly modify Settings.apk. For security enhanced compilations it is fe good to have wifi off at boot time etc. When I was searching for some guide to safe my time spent on project I found only this outdated gudie which was not much useful to me, so i decided to write something little bit more up to date. As ussual in this wiki entry features are written down as examples and shows the way how to perform similiar operation, i hope that this format will help to perform those operations even after things change a little bit in newer versions of source code.

interesting file list

Settings layout file - packages/apps/Settings/res/xml/dashboard_categories.xml
Development settings layout file - packages/apps/Settings/res/xml/development_prefs.xml
Development settings main file - packages/apps/Settings/src/com/android/settings/DevelopmentSettings.java

Removing ThemeChooser from Settings

this thread is continuation of Debundling CM build where I shown how to remove ThemeChooser. After removal there is still entry in Settings which points to non-existing apk.

First it is necessary to locate ThemeChooser in settings. In Settings it is named Themes as we can see if we open Settings in unmodified android device:

 $ cd packages/apps/Settings
 $ grep -RE Themes
res/values-en-rIN/cm_strings.xml:  <string name="themes_settings_title">Themes</string>
res/values-en-rAU/cm_strings.xml:  <string name="themes_settings_title">Themes</string>
res/xml/dashboard_categories.xml:        <!-- Themes -->
res/values/cm_strings.xml:    <!-- Themes Settings -->
res/values/cm_strings.xml:    <string name="themes_settings_title">Themes</string>

Now we know what we want to find:

 $ grep -RE themes_settings
res/values-sr/cm_strings.xml:  <string name="themes_settings_title">Теме</string>
res/values-ru/cm_strings.xml:  <string name="themes_settings_title">Темы</string>
.....
.....
.....
res/values-ca/cm_strings.xml:  <string name="themes_settings_title">Temes</string>
res/values-eo/cm_strings.xml:  <string name="themes_settings_title">Etosoj</string>
grep: .git/shallow: No such file or directory

Little refinement:

$ grep -RE themes_settings --exclude-dir=*values-*
res/xml/dashboard_categories.xml:                android:title="@string/themes_settings_title"
res/values/cm_strings.xml:    <string name="themes_settings_title">Themes</string>
grep: .git/shallow: No such file or directory

if we open res/xml/dashboard_categories we can see easily that it is file for which we're looking for.

commenting out Themes entry will do the trick

118 
119         <!-- Themes -->
120         <!-- NOTE: Intent.parseIntent looks for "categories" tag and not "category" -->
121 <!--        <dashboard-tile
122                 android:id="@+id/theme_settings"
123                 android:title="@string/themes_settings_title"
124                 android:icon="@drawable/ic_settings_themes">
125             <intent
126                     android:action="android.intent.action.MAIN" >
127                 <categories android:name="cyanogenmod.intent.category.APP_THEMES" />
128             </intent>
129         </dashboard-tile>  -->
130

and we're done.

Advanced Reboot by default

When I'm using Multirom for testing builds and still keep my N7 useful i found Advanced Reboot feature pretty handy so I decided to have it On by default. It shows to be rather tricky in the process.

Locate - analogously to themechooser:

 $ cd packages/apps/Settings
 $ grep -RE Advanced\ reboot --exclude-dir=*values-*
res/values/cm_strings.xml:    <!-- Advanced reboot options -->
res/values/cm_strings.xml:    <string name="advanced_reboot_title">Advanced reboot</string>
grep: .git/shallow: No such file or directory

$ grep -RE advanced_reboot --exclude-dir=*values-*
res/xml/development_prefs.xml:        android:key="advanced_reboot"
res/xml/development_prefs.xml:        android:title="@string/advanced_reboot_title"
res/xml/development_prefs.xml:        android:summary="@string/advanced_reboot_summary" />
res/values/cm_strings.xml:    <string name="advanced_reboot_title">Advanced reboot</string>
res/values/cm_strings.xml:    <string name="advanced_reboot_summary">When unlocked, include options in the power menu for 
rebooting into recovery, bootloader or performing a soft reboot</string>
src/com/android/settings/DevelopmentSettings.java:    private static final String ADVANCED_REBOOT_KEY = "advanced_reboot";
grep: .git/shallow: No such file or directory

this leaves us to: res/xml/development_prefs.xml and src/com/android/settings/DevelopmentSettings.java files. If we take closer look to development_prefs.xml we can see that it is file specifying only layout and nothing more. That leaves us DevelopmentSettings.java as only file to be examined.

After litte research we could find that the're mAdvancedReboot, ADVANCED_REBOOT and so on. mAdvanced reboot is of type SwitchPreference, which makes it interesting.

after litte research I located those lines:

 682     private void updateAdvancedRebootOptions() {
 683         mAdvancedReboot.setChecked(Settings.Secure.getInt(getActivity().getContentResolver     (),
 684                 Settings.Secure.ADVANCED_REBOOT, 0) != 0);
 685     }

setChecked looks pretty much like something we want to fiddle.

If we look at adb_notify (Debugging notify option) which is on by default:

 613         mAdbNotify.setChecked(Settings.Secure.getInt(cr,
 614                 Settings.Secure.ADB_NOTIFY, 1) != 0);

We can probably figure out what to do:

 682     private void updateAdvancedRebootOptions() {
 683         mAdvancedReboot.setChecked(Settings.Secure.getInt(getActivity().getContentResolver     (),
 684                 Settings.Secure.ADVANCED_REBOOT, 1) != 0);
 685     }

After compiling with this setting and running we can see that ADVANCED REBOOT DOES NOT WORK. If we turn on Developer options we can see that we Only switched radio button to checked, but leave value of it unchanged, pretty nasty state.

After little poking around and finding lot of dead ends i decided to look to original commits. I should do that probably on the first place.

Locating original commit:

search on github for file with lines definitely related to our problematics fe Development layout config
Blame somebody for the line which is related to our problem.

In this case it looks like this commit has a brother somewhere, probably named Add Advanced reboot (2 of 2).

After reviewing the code I found few pretty interesting lines in ShutdownThread.java file:

148     private static boolean isAdvancedRebootPossible(final Context context) {
149         KeyguardManager km = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SE    RVICE);
150         boolean keyguardLocked = km.inKeyguardRestrictedInputMode() && km.isKeyguardSecure(    );
151         boolean advancedRebootEnabled = Settings.Secure.getInt(context.getContentResolver()    ,
152             Settings.Secure.ADVANCED_REBOOT, 0) == 1;
153         boolean isPrimaryUser = UserHandle.getCallingUserId() == UserHandle.USER_OWNER;
154 
155         return advancedRebootEnabled && !keyguardLocked && isPrimaryUser;

If we check settings.secure.getInt() reference we know for sure what to do:

148     private static boolean isAdvancedRebootPossible(final Context context) {
149         KeyguardManager km = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SE    RVICE);
150         boolean keyguardLocked = km.inKeyguardRestrictedInputMode() && km.isKeyguardSecure(    );
151         boolean advancedRebootEnabled = Settings.Secure.getInt(context.getContentResolver()    ,
152             Settings.Secure.ADVANCED_REBOOT, 1) == 1;
153         boolean isPrimaryUser = UserHandle.getCallingUserId() == UserHandle.USER_OWNER;
154 
155         return advancedRebootEnabled && !keyguardLocked && isPrimaryUser;

After compilation and testing we find out that Advanced reboot is ON even in fact, not only in menu.

Adaptive brightness off by default

I dont know if it works on other devices, but on my N7 this feature drives me mad. It was pretty tricky for me to find this one.

Locate - analogous to themechooser:

 $ cd packages/apps/Settings
 $ grep -RsE Adaptive\ brightness --exclude-dir=*values-*
res/xml/display.xml:        <!-- Adaptive brightness -->
res/values/strings.xml:    <string name="auto_brightness_title">Adaptive brightness</string>

$ grep -RsE auto_brightness --exclude-dir=*values-*
res/xml/display.xml:                android:key="auto_brightness"
res/xml/display.xml:                android:title="@string/auto_brightness_title"
res/xml/display.xml:                settings:keywords="@string/keywords_display_auto_brightness"
res/xml/display.xml:                android:summary="@string/auto_brightness_summary"
res/values/strings.xml:    <string name="auto_brightness_title">Adaptive brightness</string>
res/values/strings.xml:    <string name="auto_brightness_summary">Optimize brightness level for available light</string>
res/values/strings.xml:    <string name="keywords_display_auto_brightness">dim screen touchscreen battery</string>
src/com/android/settings/DisplaySettings.java:    private static final String KEY_AUTO_BRIGHTNESS = "auto_brightness";

closer look on DisplaySettings.java

...
663         if (preference == mAutoBrightnessPreference) {
664             boolean auto = (Boolean) objValue;
665             Settings.System.putInt(getContentResolver(), SCREEN_BRIGHTNESS_MODE,
666                     auto ? SCREEN_BRIGHTNESS_MODE_AUTOMATIC : SCREEN_BRIGHTNESS_MODE_MANUAL);
667         }
....

after unsuccessful attempts to locate something relevant to SCREEN_BRIGHTNESS_MODE in Settings.apk I performed search in android source root directory, which aslo found nothing. After a lot of unsuccessful attempts to find source of default settings i finaly found magic keyword def_screen_brightness_automatic_mode in

frameworks/base/packages/SettingsProvider/res/values/defaults.xml

the problem was that here it was off, but in overlay:

 $ vi device/asus/grouper/overlay/frameworks/base/packages/SettingsProvider/res/values/defaults.xml

 19 <resources>
 20     <!-- 2 minutes for default screen timeout -->
 21     <integer name="def_screen_off_timeout">120000</integer>
 22     <!-- Set the automatic brightness mode on by default -->
 23     <bool name="def_screen_brightness_automatic_mode">true</bool>
 24 
 25     <!-- Value for Settings.Global.LOW_BATTERY_SOUND_TIMEOUT:
 26          Mute battery sounds on tablets after one hour with screen off -->
 27     <integer name="def_low_battery_sound_timeout">3600000</integer>
 28 </resources>

situation was different, when I rewrited true on line 23 to false it was solved.

Modify Browser(.apk) source

Addition of search engine

If you're using default browser in noscript & no cookies setting, you'll find out that when you search by Google it switches to czech mutation if you're connecting from Czech republic. If you switch to DuckDuckGo you'll find out, that search engine is set to javascript version. Solution is addition of search engine to source code.

 $ cd packages/apps/Browser/
 $ grep -RsE DuckDuck
res/values/all_search_engines.xml:    <item>DuckDuckGo</item>
res/values/all_search_engines.xml:    <item>DuckDuckGo (UK)</item>

 $ vi 
....
750   </string-array>
751   <string-array name="duckduckgo" translatable="false">
752     <item>DuckDuckGo</item>
753     <item>duckduckgo.com</item>
754     <item>https://duckduckgo.com/favicon.ico</item>
755     <item>https://duckduckgo.com/?q={searchTerms}&amp;t=cyanogenmod</item>
756     <item>UTF-8</item>
757     <item></item>
758   </string-array>
....

$ grep -RsE duckduck
res/values-en-rGB/donottranslate-search_engines.xml:    <item>duckduckgo</item>
res/values-en-rGB/donottranslate-search_engines.xml:    <item>duckduckgo_en_gb</item>
res/values-de-rDE/donottranslate-search_engines.xml:    <item>duckduckgo</item>
res/values-ru-rRU/donottranslate-search_engines.xml:    <item>duckduckgo</item>
res/values-es-rES/donottranslate-search_engines.xml:    <item>duckduckgo</item>
res/values/all_search_engines.xml:  <string-array name="duckduckgo" translatable="false">
res/values/all_search_engines.xml:    <item>duckduckgo.com</item>
res/values/all_search_engines.xml:    <item>https://duckduckgo.com/favicon.ico</item>
res/values/all_search_engines.xml:    <item>https://duckduckgo.com/?q={searchTerms}&amp;t=cyanogenmod</item>
res/values/all_search_engines.xml:  <string-array name="duckduckgo_en_gb" translatable="false">
res/values/all_search_engines.xml:    <item>duckduckgo.com</item>
res/values/all_search_engines.xml:    <item>https://duckduckgo.com/favicon.ico</item>
res/values/all_search_engines.xml:    <item>https://duckduckgo.com/?q={searchTerms}%20r:uk&amp;t=cyanogenmod</item>
res/values/donottranslate-search_engines.xml:    <item>duckduckgo</item>
res/values-en-rUS/donottranslate-search_engines.xml:    <item>duckduckgo</item>

I've learned by trial and error that you need to add your custom search engine in all_search_engines.xml, donottranslate-search_engines.xml and to donottranslate-search_engines.xml in locale values in Browser folder:

res/values/all_search_engines.xml
res/values/donottranslate-search_engines.xml
res/values-en-rUS/donottranslate-search_engines.xml

 $ vi res/values/all_search_engines.xml
......
759   <string-array name="duckduckgonojs" translatable="false">
760     <item>DuckDuckGo NoJavaScript</item>
761     <item>duckduckgo.com</item>
762     <item>https://duckduckgo.com/favicon.ico</item>
763     <item>https://duckduckgo.com/html/?q={searchTerms}</item>
764     <item>UTF-8</item>
765     <item></item>
766   </string-array>
......

 $ vi res/values/donottranslate-search_engines.xml
...
 29     <item>duckduckgonojs</item>
...

$ vi res/values-en-rUS/donottranslate-search_engines.xml
...
 29     <item>duckduckgonojs</item>
...

voilà

Addition of browser user-agent

There are few predefined spoofed user-agents in browser, this is way how to add one more to them.

changes in short (base dir is ~/android/system/packages/apps/Browser):

$vi res/xml/advanced_preferences.xml
....
 28     <ListPreference
 29             android:key="user_agent"
 30             android:title="@string/pref_content_ua"
 31             android:entries="@array/pref_development_ua_choices"
 32             android:entryValues="@array/pref_development_ua_values"
 33             android:defaultValue="6"/>
....

$ vi src/com/android/browser/BrowserSettings.java
....
 81 
 82     private static final String UBUNTU_USERAGENT = "Mozilla/5.0 (X11; Ubuntu; " +
 83         "Linux x86_64; rv:43.0) Gecko/20100101 " +
 84         "Firefox/43.0";
 85 
 86     private static final String USER_AGENTS[] = { null,
 87             DESKTOP_USERAGENT,
 88             IPHONE_USERAGENT,
 89             IPAD_USERAGENT,
 90             FROYO_USERAGENT,
 91             HONEYCOMB_USERAGENT,
 92             UBUNTU_USERAGENT,
 93     };
 94
....

$ vi res/values/strings.xml
....
 579     <!-- Do not tranlsate.  Development option -->
 580     <string-array name="pref_development_ua_choices" translatable="false">
 581         <item>Android</item>
 582         <item>Desktop</item>
 583         <item>iPhone</item>
 584         <item>iPad</item>
 585         <item>Froyo-N1</item>
 586         <item>Honeycomb-Xoom</item>
 587         <item>Ubuntu-Firefox</item>
 588     </string-array>
 589     <!-- Do not tranlsate.  Development option -->
 590     <string-array name="pref_development_ua_values" translatable="false">
 591         <item>0</item>
 592         <item>1</item>
 593         <item>2</item>
 594         <item>3</item>
 595         <item>4</item>
 596         <item>5</item>
 597         <item>6</item>
 598     </string-array>
....

This solution have three major issues - you also need to turn off connectivitycheck , change NTP server and add fix “turn time-sync off” (so you can't be identified by requests to android.pool.ntp.org), last issue is with http-accept header, i dont know how to solve last issue, if somebody does please contact me.

First start traffic analysis

Also cyanogenmod itself want to talk a little bit after first boot even after debundling and turning reports off.

Recorded HTTP/HTTPS traffic

CONNECT shopvac.cyngn.com:443 HTTP/1.1
Host: shopvac.cyngn.com
User-Agent: Dalvik/2.1.0 (Linux; U; Android 5.1.1; Nexus 7 Build/LMY48Y)

CONNECT account.cyngn.com:443 HTTP/1.1
Host: account.cyngn.com
User-Agent: Dalvik/2.1.0 (Linux; U; Android 5.1.1; Nexus 7 Build/LMY48Y)

CONNECT stats.cyanogenmod.org:443 HTTP/1.1
Host: stats.cyanogenmod.org
User-Agent: Dalvik/2.1.0 (Linux; U; Android 5.1.1; Nexus 7 Build/LMY48Y)

GET http://connectivitycheck.android.com/generate_204 HTTP/1.1
User-Agent: Dalvik/2.1.0 (Linux; U; Android 5.1.1; Nexus 7 Build/LMY48Y)
Host: connectivitycheck.android.com

connectivitycheck remains even after Afwall, but ends after one HTTP response.
stats.cyanogenmod.org and account.cyngn.com is produced probably under AppID 1000 (Android system)

List of experimental setups

All setups were clean install of custom built CM (configuration - debundled with slimrecents pick). This was their first connection to the network. After previous experiments all setups were without GApps. Nightly Build performed the same way.

After initial boot: Location service was turned off Timezone was set to sarajevo CyanogenMod statistics were turned OFF in case of AfWall ON setups AfWall was instaled from disc.

In all cases DNS requests were seen.

AfWall off

Starts with connectivitycheck
Continues with account.cyngn.com:443 (CONNECT, than Application data)
shopvac.cyngn.com:443 (CONNECT, than Application Data)
stats.cyanogenmod.org:443 (CONNECT, than Application Data)

AfWall on

Starts with connectivitycheck (After respond Android does not answer anymore - lot of [TCP Retransmission])
Continues with stats.cyanogenmod.org:443 (CONNECT, than respond (connection establised), than SSL [TCP Retransmission] - Android does not answer anymore)

AfWall on, reboot before connect, Kernel Allowed by afwall

Connectivitycheck (After respond Android does not answer anymore - lot of [TCP Retransmission])
Android System packets blocked by AfWall

AfWall on, reboot before connect, Kernel Allowed by afwall, Android System Allowed by afwall

Starts with connectivitycheck
Continues with stats.cyanogenmod.org:443 (CONNECT, than Application Data)
Once again stats.cyanogenmod.org:443 (CONNECT, than Application Data)
Continues with account.cyngn.com:443 (CONNECT, than Application data)
shopvac.cyngn.com:443 (CONNECT, than Application Data)

AfWall on, not first boot, everything disabled in afwall

Connectivitycheck still persists.
Only DNS requests for android ntp server were seen.

AfWall on, not first boot, everything disabled in afwall except linux kernel

Connectivitycheck still persists.
Only DNS requests for android ntp server, and stats.cyanogenmod.org, account.cyngn.com and shopvac.cyngn.com were seen, but no HTTP/HTTPS traffic.

Source search

only wanted to try it, i was lazy to search whole source code, maybe it could give more hits.

~$ cd android/system
 $ grep -RE shopvac\.cyngn\.com
grep: build/.git/shallow: No such file or directory
grep: ndk/.git/shallow: No such file or directory
grep: ndk/.git/packed-refs: No such file or directory
grep: abi/cpp/.git/shallow: No such file or directory
...
...
grep: packages/apps/AudioFX/.git/shallow: No such file or directory
grep: packages/apps/Contacts/.git/shallow: No such file or directory
grep: packages/apps/Bluetooth/.git/shallow: No such file or directory
packages/apps/Settings/res/values/config.xml      <string name="stats_cyanogen_url">https://shopvac.cyngn.com/community/heartbeat</string>
grep: packages/apps/Settings/.git/shallow: No such file or directory
grep: packages/apps/Stk/.git/shallow: No such file or directory
....
....
grep: packages/wallpapers/MusicVisualization/.git/shallow: No such file or directory
grep: packages/wallpapers/NoiseField/.git/shallow: No such file or directory
grep: packages/wallpapers/PhaseBeam/.git/shallow: No such file or directory
grep: .repo/manifests/.git/shallow: No such file or directory
^C
$ vi packages/apps/Settings/res/values/config.xml

100     <!-- Metrics server endpoints -->
101     <string name="stats_cm_url">https://stats.cyanogenmod.org/submit</string>
102     <string name="stats_cyanogen_url">https://shopvac.cyngn.com/communit/heartbeat</string>
103     <string name="stats_cyanogen_token_url">https://account.cyngn.com/api/v1/community/heartbeat_token</string>

After digging a while few changes from true to false in one AndroidManifest helped a bit:

~/android/system/packages/apps/Settings/AndroidManifest.xml

2278         <!-- Anonymous Statistics -->
2279         <receiver android:name=".cmstats.ReportingServiceManager"
2280             android:enabled="false"
2281             android:exported="false"
2282             android:label="ReportingServiceManager">
2283             <intent-filter>
2284                 <action android:name="android.intent.action.BOOT_COMPLETED" />
2285                 <action android:name="com.android.settings.action.TRIGGER_REPORT_METRICS"      />
2286             </intent-filter>
2287         </receiver>
2288 
2289         <service android:label="ReportingService"
2290             android:enabled="false"
2291             android:exported="false"
2292             android:name=".cmstats.ReportingService">
2293         </service>

LTO - GPS

New friend emerged after applying fix above: GET http://gllto.glpals.com/7day/latest/lto.dat HTTP/1.1 Accept: */*, application/vnd.wap.mms-message, application/vnd.wap.sic x-wap-profile: http://www.openmobilealliance.org/tech/profiles/UAPROF/ccppschema-20021212# Host: gllto.glpals.com Connection: Keep-Alive User-Agent: Android </code>

~/android/system$ grep -RE gllto
...
Binary file vendor/broadcom/grouper/proprietary/glgps matches
device/asus/grouper/gps.conf:XTRA_SERVER_1=http://gllto.glpals.com/7day/latest/lto.dat
device/asus/grouper/gps.conf:XTRA_SERVER_2=http://gllto.glpals.com/7day/latest/lto.dat
device/asus/grouper/gps.conf:XTRA_SERVER_3=http://gllto.glpals.com/2day/latest/lto.dat

It is Long Term Orbit technology from Broadcom, turned ON by default.

Link Adresses:

~/android/system$ cat device/asus/grouper/gps.conf 
NTP_SERVER=north-america.pool.ntp.org
XTRA_SERVER_1=http://gllto.glpals.com/7day/latest/lto.dat
XTRA_SERVER_2=http://gllto.glpals.com/7day/latest/lto.dat
XTRA_SERVER_3=http://gllto.glpals.com/2day/latest/lto.dat

GPS configuration (LTO OFF/ON):

~/android/system511$ cat vendor/broadcom/grouper/proprietary/gpsconfig.xml 
<?xml version="1.0" encoding="utf-8"?>
<glgps xmlns="http://www.glpals.com/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.glpals.com/ glconfig.xsd" >
  <!--HAL Confguration  -->
  <hal
       acPortName="/dev/ttyHS1"
       lBaudRate="115200"
       cLogEnabled="false"
       acLogDirectory="/data/gps/log/"
       gpioNStdbyPath="/sys/class/gpio/gpio162/value"
       gpioDelayMs="120"
       acNvStoDir="/data/gps/"
       acNmeaOutName="/data/gps/nmea_out"
       ctrlPipe="/data/gps/glgpsctrl"
       SyncLto="true"
       ltoFileName="lto2.dat"
       acLtoDir="/data/gps/"
       LbsSyncLtoThresholdDays="1"
  />

  <gll
       LogPriMask="LOG_INFO"
       LogFacMask="LOG_DEFAULT"
       FrqPlan="FRQ_PLAN_26MHZ_2PPM"
       RfType="GL_RF_4751_DANUBE_EXT_LNA"
  />

<job id="Periodic">
    <task>
        <req_pos/>
    </task>
</job>

</glgps>

conclusion

After setting ReportingService OFF and LTO Sync OFF first time connection of tablet to wifi consist only of connectivitycheck at the start and than dns request for NTP servers (10 minutes cap). (AfWall not installed). Turning off sending statistics in GUI probably restrict amount of statistics traffic slightly down, but to turn it off completely you need to edit according config. GPS on N7 2012 have feature named LTO which downloads data package once upon a time. Android in tested version have connectivitycheck procedure which comes from (based on adb logcat) NetworkManager and which probably Ignores aFWall, but it gives almost same set of information that any other http connection would give. As you're connecting to net you ussualy to go browsing, you will leak User-Agent identification regardless on connectivitycheck procedure. Those two problems should be solved same time.

brmlab

Table of Contents

CM Grouper from source

Useful CM compiling related links

Cherry-picking SlimRecents to CM 12.1

Setting-up enviroment

Find commit you want to cherry pick

Getting new repo

Cherry pick

Resolving conflicts

syncing new repo

continue with cherry-pick

checking for problems/bugs

Commiting cherry-pick

Conclusion

Debundling build & GAPPS

Debundling CM build

ThemeChooser

Wallpapers

CM related stuff

SetupWizard & OneTimeInit

WAPPushManager

Debundling GAPPS

Debundling links, tips & tricks

Conclusion

Modify Settings(.apk) source

Removing ThemeChooser from Settings

Advanced Reboot by default

Adaptive brightness off by default

Modify Browser(.apk) source

Addition of search engine

Addition of browser user-agent

First start traffic analysis

Recorded HTTP/HTTPS traffic

List of experimental setups

Source search

LTO - GPS

conclusion