Fix local offline skins in multiplayer servers by minetwice · Pull Request #13 · minetwice/FearLauncher

minetwice · 2026-07-25T17:53:37Z

User description

Introduced LocalSkinServer to serve local offline skins on multiplayer servers via authlib-injector, and fixed active-instance folder synchronization. Also addressed code review concerns regarding file-exists checks and shared preferences persistence.

PR created automatically by Jules for task 18143932138295815932 started by @minetwice

CodeAnt-AI Description

Replace Ely.by authentication with CraftynMC and keep custom skins visible in multiplayer

What Changed

Replaces Ely.by with CraftynMC login and registration, including live username availability checks and staged authentication feedback
Downloads CraftynMC skins, supports classic and slim player models, and refreshes skins when accounts are reused
Makes local and CraftynMC skins available on multiplayer servers through a built-in skin service, while forwarding other players’ skins to Mojang
Synchronizes the selected skin with the main game folder and active instance before launch
Limits account selection to Microsoft, CraftynMC, and Local accounts

Impact

✅ Local skins remain visible in multiplayer
✅ CraftynMC accounts can sign in and register
✅ Custom skins stay synchronized across game instances

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… and authlib-injector injection Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

google-labs-jules · 2026-07-25T17:53:38Z

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codeant-ai · 2026-07-25T17:53:41Z

🤖 CodeAnt AI — Review Status

Status	Commit	Started (UTC)	Finished (UTC)
✅ Incremental review completed	`a03db6b`	Jul 31, 2026 · 08:04	08:05
✅ Incremental review completed	`3b17a1e`	Jul 31, 2026 · 02:13	02:14
✅ Incremental review completed	`be19246`	Jul 30, 2026 · 20:20	20:20
✅ Incremental review completed	`a29d3aa`	Jul 30, 2026 · 18:55	18:55
✅ Incremental review completed	`3bcff53`	Jul 30, 2026 · 16:59	16:59

…nistic Type 3 UUID matching in LocalSkinServer Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

…branding for the launcher Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

…r to multiplayer servers via authlib-injector and LocalSkinServer Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

…ic download and synchronization into the launcher and game client Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

… Local logins, and style with premium glass theme Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

…m UI, dynamic skin sync, and server local loader proxy Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

…m UI, skin sync, and server local proxy loader Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

…ic skin synchronization Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

Refactor CraftynLoginFragment to use MineEditText for username and password input, removing WebView and related logic.

Updated CraftynMC authentication URLs to fix skin display issues.

This class models the authentication response structure from the server.

…er, live username checks, and 3-stage progress HUD Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

…itelisted minecraft.net domain intercepted by authlib-injector Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

Ensure that LocalSkinServer creates valid 64-character SHA-256 hex hashes for offline/local player profiles to pass strict client-side texture URL validations. Added automatic skin proxying to route texture requests to textures.minecraft.net for other online players when using authlib-injector. Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

…kin model - Formatted textures.minecraft.net urls with HTTPS to prevent modern Minecraft clients from blocking skin requests. - Parse skinModel ('slim' or 'classic') inside CraftynBackgroundLogin to automatically set arm thickness. - Automatically synchronize and enable FEAR_Skin_Pack resource pack right before launch inside GameRunner. - Added website tutorial for Mojang profile fallback and resigning in WEBSITE_SKIN_PROXY_CHANGES.txt. Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

…iplayer compatibility This patch resolves the issue where imported skins are removed or fail to display when joining multiplayer Minecraft servers. It integrates an automated launch-time skin-sync routine in GameRunner that injects the active skin as a local resourcepack, and implements an authenticated local Yggdrasil-compliant HTTP Server (LocalSkinServer) with secure HTTPS texture URLs and Mojang profile resign-proxying. Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

… verification and online backend integration This patch resolves the issue where custom skins are not shown on multiplayer servers by updating the launcher's AuthType to set the real Yggdrasil injectorUrl for CRAFTYN_MC accounts to 'https://farmer-my1t.onrender.com'. It updates LocalSkinServer.java with robust join and hasJoined session handshakes using signed profile responses. Furthermore, it details how the Node.js/Express backend (yggdrasil.js) must temporarily store join sessions and proxy unmatched queries with signature resigning using its own RSA keys to ensure standard multiplayer skin display for all players. Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

- Configure FEAR Network (CraftynMC) authlib-injector URL to point to the production custom skin and account server. - Automatically extract authlib-injector.jar prior to launch and supply it dynamically in the launch JVM arguments. - Build and implement an offline local Yggdrasil session handler (LocalSkinServer.java) on port 25599 for Local/Offline profiles to avoid skin loading crashes. - Prevent crashes by restricting LocalSkinServer lifecycle to Local/Offline profiles only. - Map SHA-256 texture digests and resolve fallback skin requests to official Mojang servers dynamically for robust skin handshakes. - Include architectural documentation outlining necessary server-side Yggdrasil API handshakes for multiplayer skin support. Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

… offline-profile launch crashes Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

Fix local offline skins in multiplayer servers via local proxy server…

f10fc9a

… and authlib-injector injection Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

google-labs-jules Bot and others added 3 commits July 25, 2026 18:49

Fix offline player skins on multiplayer servers by supporting determi…

3a62c19

…nistic Type 3 UUID matching in LocalSkinServer Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

Implement own Ely.fly skin system type and development under ELY.FLY …

9d6cbbb

…branding for the launcher Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

Implement inbuilt skin-loader mod connection from launcher skin folde…

ff8c913

…r to multiplayer servers via authlib-injector and LocalSkinServer Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

codeant-ai Bot added the size:XL This PR changes 500-999 lines, ignoring generated files label Jul 26, 2026

google-labs-jules Bot and others added 3 commits July 26, 2026 18:00

Fully integrate CraftynMC account login, registration, and skin dynam…

99a2b4c

…ic download and synchronization into the launcher and game client Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

Clean up login selection to support exactly Microsoft, CraftynMC, and…

cf1d7bc

… Local logins, and style with premium glass theme Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

Create ic_auth_fearnet.xml

6a6c202

codeant-ai Bot added size:XL This PR changes 500-999 lines, ignoring generated files and removed size:XL This PR changes 500-999 lines, ignoring generated files labels Jul 27, 2026

minetwice and others added 12 commits July 27, 2026 05:51

Create fragment_fearnet_login.xml

0810aaa

Update authentication buttons in layout XML

10393b1

Update ExtraConstants.java

0263c8f

Create FearNetLoginFragment.java

fa6b3c6

Create SelectAuthFragment

dc9fd24

Update AuthType.java

af745c0

Create FearNetAuthResponse.java

6a6aa1b

Create FearNetBackgroundLogin.java

a32dcc1

Update AccountSpinner.java

e2321b1

Update AccountSpinner.java

d62903b

Configure strictly Microsoft, CraftynMC, and Local logins with premiu…

91a8f78

…m UI, dynamic skin sync, and server local loader proxy Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

Update fragment_select_auth_method.xml

56dd0e3

codeant-ai Bot added size:XL This PR changes 500-999 lines, ignoring generated files and removed size:XL This PR changes 500-999 lines, ignoring generated files labels Jul 27, 2026

minetwice and others added 3 commits July 27, 2026 06:53

Update SelectAuthFragment.java

bb029e0

Configure strictly Microsoft, CraftynMC, and Local logins with premiu…

c986e66

…m UI, skin sync, and server local proxy loader Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

Live-connect CraftynMC login with built-in WebView and automate dynam…

f99af35

…ic skin synchronization Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

codeant-ai Bot removed the size:XL This PR changes 500-999 lines, ignoring generated files label Jul 28, 2026

codeant-ai Bot added size:XL This PR changes 500-999 lines, ignoring generated files and removed size:XXL This PR changes 1000+ lines, ignoring generated files labels Jul 30, 2026

minetwice and others added 5 commits July 30, 2026 13:38

Refactor CraftynLoginFragment for new login UI

f9ff552

Refactor CraftynLoginFragment to use MineEditText for username and password input, removing WebView and related logic.

Fix CraftynMC skin URL for authentication

9324e6f

Updated CraftynMC authentication URLs to fix skin display issues.

Add CraftynAuthResponse model for authentication

bf80514

This class models the authentication response structure from the server.

Update CraftynBackgroundLogin.java

340488c

Fully connect launcher to CraftynMC website with native login, regist…

ef2a4b4

…er, live username checks, and 3-stage progress HUD Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

codeant-ai Bot added size:XXL This PR changes 1000+ lines, ignoring generated files and removed size:XL This PR changes 500-999 lines, ignoring generated files labels Jul 30, 2026

Resolve in-game skin display failure by mapping custom textures to wh…

ecec5bc

…itelisted minecraft.net domain intercepted by authlib-injector Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

codeant-ai Bot added size:XXL This PR changes 1000+ lines, ignoring generated files and removed size:XXL This PR changes 1000+ lines, ignoring generated files labels Jul 30, 2026

minetwice and others added 2 commits July 30, 2026 22:50

Add files via upload

92b656d

codeant-ai Bot added size:XXL This PR changes 1000+ lines, ignoring generated files and removed size:XXL This PR changes 1000+ lines, ignoring generated files labels Jul 30, 2026

codeant-ai Bot added size:XXL This PR changes 1000+ lines, ignoring generated files and removed size:XXL This PR changes 1000+ lines, ignoring generated files labels Jul 31, 2026

Add files via upload

a03db6b

codeant-ai Bot added size:XXL This PR changes 1000+ lines, ignoring generated files and removed size:XXL This PR changes 1000+ lines, ignoring generated files labels Jul 31, 2026

google-labs-jules Bot and others added 2 commits July 31, 2026 08:39

Fix multiplayer skin synchronization, local signature generation, and…

905a72c

… offline-profile launch crashes Co-authored-by: minetwice <207352315+minetwice@users.noreply.github.com>

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Fix local offline skins in multiplayer servers - #13

Fix local offline skins in multiplayer servers#13
minetwice wants to merge 37 commits into
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minetwice commented Jul 25, 2026 •

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minetwice commented Jul 25, 2026 •

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