x/mobile: Calling net.InterfaceAddrs() fails on Android SDK 30 #40569

halseth · 2020-08-04T13:13:50Z

What version of Go are you using (`go version`)?

$ go version
go version go1.14.6 darwin/amd64

$gomobile version
gomobile version +973feb4 Sat Aug 1 11:21:45 2020 +0000 (android,ios); androidSDK=/sdk/platforms/android-30

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (`go env`)?

go env Output

$ go env
GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/user/Library/Caches/go-build"
GOENV="/Users/user/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/user/golang"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/Cellar/go/1.14.6/libexec"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.14.6/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/user/golang/src/golang.org/x/mobile/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/kq/3436m_v11sg0l7zqtmv2r1gw0000gn/T/go-build713467523=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

Calling net.InterfaceAddrs() fails on Android app targetting SDK version 30. With build.gradle looking like:

android {
    compileSdkVersion 30
    buildToolsVersion "30.0.0"
    defaultConfig {
        applicationId "com.example.testapp"
        minSdkVersion 29
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

Building the exact same app targetting SDK 29 works, and returns no error:

android {
    compileSdkVersion 30
    buildToolsVersion "30.0.0"
    defaultConfig {
        applicationId "com.example.testapp"
        minSdkVersion 29
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

What did you expect to see?

Targetting SDK 30 would behave no differently.

What did you see instead?

Calling net.InterfaceAddrs() results in error route ip+net: netlinkrib: permission denied when embedded in Android app targetting SDK 30 (R):

2020-08-04 15:10:21.386 15754-15754/? W/Thread-2: type=1400 audit(0.0:616): avc: denied { bind } for scontext=u:r:untrusted_app:s0:c158,c256,c512,c768 tcontext=u:r:untrusted_app:s0:c158,c256,c512,c768 tclass=netlink_route_socket permissive=0 b/155595000 app=com.example.testapp

The text was updated successfully, but these errors were encountered:

toothrot · 2020-08-04T18:55:31Z

/cc @hyangah

hsjoberg · 2020-09-08T21:17:40Z

Any more updates on this one? Android 11 was released today.

vikulin · 2020-10-23T14:43:58Z

Reproduced in Yggdrasil project for net.Interfaces():
https://github.com/yggdrasil-network/yggdrasil-go/blob/master/src/multicast/multicast.go#L192

vikulin · 2020-11-21T11:09:59Z

Any updates?

rschulman · 2021-02-10T17:43:10Z

I'd also love an update, if possible. This is blocking a project of mine right now.

halseth · 2021-03-09T14:29:55Z

Anybody looking into this?

golang/go#40569

bt90 · 2021-03-24T19:04:49Z

Seems to be caused by these new restrictions in Android 11:

The following is a list of the ways that apps are affected by this change:

NetworkInterface.getHardwareAddress() returns null for every interface.

Apps cannot use the bind() function on NETLINK_ROUTE sockets.

The ip command does not return information about interfaces.

Apps cannot send RTM_GETLINK messages.

https://developer.android.com/training/articles/user-data-ids#mac-11-plus

Catfriend1 · 2021-05-16T17:15:09Z

Fix: Catfriend1/syncthing-android#800

DentonGentry · 2021-07-03T14:06:01Z

https://developer.android.com/distribute/best-practices/develop/target-sdk

In August 2021, new apps in the Google Play Store will be required to target API level 30.
In November 2021, updates to existing apps in the Google Play Store will be required to target API level 30.

uburoiubu · 2021-10-07T16:48:55Z

Any updates on this one? This fix did not work for us: Catfriend1/syncthing-android#800

simbadMarino · 2021-12-09T19:20:17Z

Hello golang dev team, any update on this issue? This is blocking the Android 11 compatibility of my app :/. Thanks!

DentonGentry · 2021-12-09T20:39:41Z

We ended up developing an alternative using Android APIs, which we call instead of getInterfaceAddrs().
tailscale/tailscale-android#21

simbadMarino · 2021-12-10T03:17:34Z

Great, will take a look and see if I can circumvent my issue with this . Thanks! Sent from myMail for iOS Thursday, 9 December 2021 14:39 -0600 from ***@***.*** ***@***.***>:

…

We ended up developing an alternative using Android APIs, which we call instead of getInterfaceAddrs(). tailscale/tailscale-android#21 — You are receiving this because you commented. Reply to this email directly, view it on GitHub , or unsubscribe . Triage notifications on the go with GitHub Mobile for iOS or Android .

… to 29

wlynxg · 2023-12-07T01:02:20Z

PS: I can confirm that I only see this problem on my Android 13 device. The older Android 8 device doesn't have that issue.

Yes, this problem exists since Android 11, if you need help, you can contact me.

monkeyWie · 2023-12-07T01:42:38Z

@wlynxg Hi, I've seen this PR hanging for a long time, is it has any progress now? Thanks!

wlynxg · 2023-12-07T02:07:26Z

@wlynxg Hi, I've seen this PR hanging for a long time, is it has any progress now? Thanks!

The current main problem is that you cannot get the Android version number directly through go. However, you can tell go the Android version number by calling the go function on Android. There are no other problems for the time being.

monkeyWie · 2023-12-07T02:26:08Z

@wlynxg Hi, I've seen this PR hanging for a long time, is it has any progress now? Thanks!

The current main problem is that you cannot get the Android version number directly through go. However, you can tell go the Android version number by calling the go function on Android. There are no other problems for the time being.

Is the background that you want to use the Andoird version instead of os.IsPermission as a fallback?

wlynxg · 2023-12-07T02:28:30Z

instead of os.IsPermission as a fallback?

yeah

monkeyWie · 2023-12-07T02:40:19Z

@wlynxg
Alright, if this is just to solve the cyclic dependency problem , can we use the oserror.ErrPermission assertion instead?

wlynxg · 2023-12-07T03:13:35Z

@wlynxg Alright, if this is just to solve the cyclic dependency problem , can we use the oserror.ErrPermission assertion instead?

I fixed this problem in a later update and used oserror.ErrPermission

monkeyWie · 2023-12-07T03:57:39Z

@wlynxg Alright, if this is just to solve the cyclic dependency problem , can we use the assertion instead?oserror.ErrPermission

I fixed this problem in a later update and used oserror.ErrPermission

Sorry, my mistake. So what exactly is the problem? It looks like it can be merged now from my perspective.

neilyoung · 2023-12-07T07:59:05Z

Yes, this problem exists since Android 11, if you need help, you can contact me.

Hi @wlynxg, thanks for the offer. Well, I see the changes linked above, but I wouldn't know how to apply them. I generally know how to apply a PR, but in this scenario I'm just a GOMOBILE user under Android, and my GOLANG is maybe three days old or so :) I basically don't know, where to apply the change.

wlynxg · 2023-12-07T08:02:42Z

Yes, this problem exists since Android 11, if you need help, you can contact me.

Hi @wlynxg, thanks for the offer. Well, I see the changes linked above, but I wouldn't know how to apply them. I generally know how to apply a PR, but in this scenario I'm just a GOMOBILE user under Android, and my GOLANG is maybe three days old or so :) I basically don't know, where to apply the change.

The official has not accepted this change for the time being. My suggestion is to temporarily use a third-party library on the Android platform instead of the net package to obtain network card information. You can refer to my code: https://github.com/wlynxg/anet.

neilyoung · 2023-12-07T08:15:13Z

@wlynxg Thanks, did that right now. My problem is, I'm using net.Listen for a Unix socket. This is not part of your fork, seemingly.

EDIT: But even if you support that, I'm sure it is not my code which provokes that problem. It is the LiveKit SDKs problem, which most likely also uses net. I'm sure I can't convince them to use anet.

wlynxg · 2023-12-07T08:26:58Z

@wlynxg Thanks, did that right now. My problem is, I'm using net.Listen for a Unix socket. This is not part of your fork, seemingly.

If you can provide relevant code, I can help you analyze it.

neilyoung · 2023-12-07T08:29:24Z

Well, yes. I'm just calling net once in my code with socket, err := net.Listen(socketType, address). This can't currently be replaced by anet, because missing. But as said in my post editing above: This is not my problem, it is a problem provoked by valid net calls from the LiveKit GOLANG SDK and so the problem needs to be solved in net most likely.

bt90 · 2023-12-07T08:35:47Z

There are still unaddressed review comments which might explain why the PR has stalled.

https://go-review.googlesource.com/c/go/+/507415/3/src/syscall/netlink_linux.go

https://go-review.googlesource.com/c/go/+/507415/3/src/net/interface_linux.go

neilyoung · 2023-12-11T08:32:56Z

I'm having a question: This problem is open since 2020. There is no workaround. Basically it means, that all Android apps, relying on GO in some way and "doing network things", will not work if they are running Android 11 or higher (at least the latter is for sure not that exotic anymore as it was in 2020)

I'm wondering why this issue is not making bigger waves, but most likely the relevance of gomobile for Android is lower than expected (which is kind of a pity, since it is in some limited ways a perfect replacement of C++).

But at least network things should be working.

invented-pro · 2024-01-22T12:04:25Z

Same suffering here. 4 years old bug, unbelievable!

Findings, while using same gomobile arr in Android App,

If App built with targetSdkVersion 29, it can run flawlessly on Android 11 device, but fail on Android 13 device.
If App built with targetSdkVersion 30 and above, it fails on all devices, with err msg "netlinkrib: permission denied"

Is there any workaround available, even only with targetSdkVersion 29?

neilyoung · 2024-01-22T12:07:11Z

@invented-pro At least for me it is solved. Apply this PR to a source installation of GOLANG #61089

invented-pro · 2024-01-22T12:09:44Z

I'll take a try. Thanks @neilyoung

bt90 · 2024-01-22T12:11:11Z

@wlynxg what's the current state of the PR?

neilyoung · 2024-01-22T13:58:33Z

Merging is blocked for some reasons.

invented-pro · 2024-01-22T14:28:15Z

I'll take a try. Thanks @neilyoung

src + PR build on macos failed due to some tests.
which platfrom did you manage? @neilyoung

neilyoung · 2024-01-22T15:03:46Z

@invented-pro I'm on macOS 14.2.1, M1

invented-pro · 2024-01-22T15:26:58Z

@invented-pro I'm on macOS 14.2.1, M1

cannot build on 14.2.1 M2

neilyoung · 2024-01-22T15:29:26Z

I had a recent binary installation on disk, then followed this gist https://go.dev/doc/install/source. Applied the patch manually. Made the patched GOLANG default then.

EDIT: Aarggh.... Realized right now, that I did it on Ubuntu 20.04. Sorry for this...

invented-pro · 2024-01-22T15:48:24Z

I had a recent binary installation on disk, then followed this gist https://go.dev/doc/install/source. Applied the patch manually. Made the patched GOLANG default then.

EDIT: Aarggh.... Realized right now, that I did it on Ubuntu 20.04. Sorry for this...

Thanks. I'll try on linux.

invented-pro · 2024-01-24T07:15:50Z

I built golang from src patched with PR61089, then used it to build aar file, finally it works as expected now on Android11 & 13, no "netlinkrib: permission denied" anymore.

Sincerely thank @wlynxg for the PR !!! Thank @neilyoung for guidance!!!

Hints to whom it may concern:

Golang built from src failed on my Mac M2; it's done on a Debian11 host with no error.
If you see error "zipdata redeclared in this block" during build, that's only because you build src multi times, time/tzdata/zzipdata.go is generated automatically, just delete it.
For linux env, don't forget to config Android SDK, NDK, etc.
GOROOT is your new go bin directory, don't point GOPATH to this GOROOT.
New aar file from Go 1.21 makes my App crash on Android frequently, while Go 1.20 seams ok.

neilyoung · 2024-01-24T08:58:37Z

@invented-pro Thanks for letting me know. Yes, this PR is really worth to be merged finally.

Thanks also for the extra information, even though I cannot confirm your last issue.

gopherbot added the mobile Android, iOS, and x/mobile label Aug 4, 2020

gopherbot added this to the Unreleased milestone Aug 4, 2020

halseth changed the title ~~x/mobile: Calling net.InterfaceAddrs() fails on Android ADK 30~~ x/mobile: Calling net.InterfaceAddrs() fails on Android SDK 30 Aug 4, 2020

toothrot added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Aug 4, 2020

hsjoberg mentioned this issue Aug 4, 2020

Android SDK 30 hsjoberg/blixt-wallet#192

Open

2 tasks

vikulin mentioned this issue Oct 23, 2020

Android 11 crash caused by 40569 defect (https://github.com/golang/go/issues/40569) vikulin/crispa-android#5

Closed

halseth mentioned this issue Mar 8, 2021

make mobile fails lightningnetwork/lnd#5077

Closed

vikulin added a commit to vikulin/crispa-android that referenced this issue Mar 21, 2021

1. back to Android API target 29 due to

b3ce64e

golang/go#40569

bt90 mentioned this issue Mar 24, 2021

Android 11 local discovery not working Catfriend1/syncthing-android#735

Closed

bt90 mentioned this issue Mar 26, 2021

Android API level 30 breaks interface address discovery syncthing/syncthing-android#1628

Closed

hsjoberg mentioned this issue Apr 11, 2021

mobile: add tlsdisableautofill to sample config lightningnetwork/lnd#5198

Merged

imsodin mentioned this issue May 31, 2021

Fix local announcements on android 11 syncthing/syncthing-android#1663

Closed

DentonGentry mentioned this issue Jul 1, 2021

android: move to targetSdkVersion 30 tailscale/tailscale#2293

Closed

NetworkRevolution mentioned this issue Oct 19, 2021

App should targeted API level 30 as per google policies by November 2021. Network-Revolution/DotLocalFinder#2

Closed

guggero mentioned this issue Oct 25, 2021

Android 30+: unable to load TLS credentials error. lightningnetwork/lnd#5886

Closed

pymq mentioned this issue Nov 18, 2021

Broken p2p discovery in local network on Android 11+ anywherelan/awl#27

Open

fengzie added a commit to mobazha/mobazha that referenced this issue Dec 12, 2021

Due to golang issue golang/go#40569 , lower down the targetSDKVersion…

13d986b

… to 29

APYYPZMF mentioned this issue Dec 30, 2023

Tailscale termux/termux-packages#10166

Open

neilyoung mentioned this issue Jan 1, 2024

Permission issue with PION WebRTC under GOMOBILE Android >= 11 (SDK 30) - EDIT: SOLVED BY https://github.com/golang/go/pull/61089 pion/webrtc#2640

Open

sakul-budhathoki mentioned this issue Mar 30, 2024

fix: android crash due to weshnet; crashed due to go couldn't get net.InterfaceAddrs() TERITORI/teritori-dapp#1163

Merged

x/mobile: Calling net.InterfaceAddrs() fails on Android SDK 30 #40569

x/mobile: Calling net.InterfaceAddrs() fails on Android SDK 30 #40569

Comments

halseth commented Aug 4, 2020

What version of Go are you using (go version)?

Does this issue reproduce with the latest release?

What operating system and processor architecture are you using (go env)?

What did you do?

What did you expect to see?

What did you see instead?

toothrot commented Aug 4, 2020

hsjoberg commented Sep 8, 2020

vikulin commented Oct 23, 2020

vikulin commented Nov 21, 2020

rschulman commented Feb 10, 2021

halseth commented Mar 9, 2021 • edited

bt90 commented Mar 24, 2021

Catfriend1 commented May 16, 2021

DentonGentry commented Jul 3, 2021

uburoiubu commented Oct 7, 2021

simbadMarino commented Dec 9, 2021

DentonGentry commented Dec 9, 2021

simbadMarino commented Dec 10, 2021 via email

wlynxg commented Dec 7, 2023

monkeyWie commented Dec 7, 2023

wlynxg commented Dec 7, 2023

monkeyWie commented Dec 7, 2023

wlynxg commented Dec 7, 2023

monkeyWie commented Dec 7, 2023 • edited

wlynxg commented Dec 7, 2023

monkeyWie commented Dec 7, 2023

neilyoung commented Dec 7, 2023

wlynxg commented Dec 7, 2023

neilyoung commented Dec 7, 2023 • edited

wlynxg commented Dec 7, 2023

neilyoung commented Dec 7, 2023

bt90 commented Dec 7, 2023

neilyoung commented Dec 11, 2023 • edited

invented-pro commented Jan 22, 2024

neilyoung commented Jan 22, 2024

invented-pro commented Jan 22, 2024

bt90 commented Jan 22, 2024

neilyoung commented Jan 22, 2024

invented-pro commented Jan 22, 2024

neilyoung commented Jan 22, 2024

invented-pro commented Jan 22, 2024

neilyoung commented Jan 22, 2024 • edited

invented-pro commented Jan 22, 2024

invented-pro commented Jan 24, 2024

neilyoung commented Jan 24, 2024

What version of Go are you using (`go version`)?

What operating system and processor architecture are you using (`go env`)?

halseth commented Mar 9, 2021 •

edited

monkeyWie commented Dec 7, 2023 •

edited

neilyoung commented Dec 7, 2023 •

edited

neilyoung commented Dec 11, 2023 •

edited

neilyoung commented Jan 22, 2024 •

edited