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Kurt Himebauch
d8ed02f2cf
* docs: research and plan for EA and Ubisoft stores * feat(ea): EA store with sign-in, library, native downloads, updates and launch without the EA app * perf(ea): fetch large archive records as parallel ranges * fix(ea): register game display names * fix(ea): license legacy EA Core games and harden the LSX endpoint * fix(ea): run legacy Origin SDK games with a stand-in Origin process * fix(ea): trust only the prepared game on LSX and stop stale library syncs * fix(ea): close LSX sessions on stop and drop clients that never hand-shake * fix(ea): require every hashed field before licensing or caching a probe * fix(ea): trust one LSX session per launch * fix(ea): serialize the library cache write with sign-out and rerun a skipped sync * fix(ea): hand off library sync requests under one lock * fix(ea): clear the sign-in before invalidating the library * fix(ea): serialize sign-out with token refresh and with the library cache * fix(ea): LSX trusts only verified peers, new launch closes old sessions, exit stops its own game * fix(ea): LSX hides profile and presence from unverified peers * fix(ea): LSX handshake has a fixed deadline and untrusted sessions yield their slot * fix(ea): LSX never registers a client after its listener was stopped * fix(ea): LSX evicts each untrusted session at most once * fix(ea): LSX admission and eviction share one lock and keep the cap * fix(ea): LSX trust promotion excludes eviction * fix(ea): LSX launch generation guards restarts and drops results after shutdown * fix(ea): LSX publishes launch state under the admission lock and tags accepts by generation * fix(ea): LSX restarts rebind its listener and promotion checks the launch generation * fix(ea): record why EA refuses a game licence in the store log * chore(ea): log owned offers and the full licence refusal * chore(ea): log the account's entitlements when no game licence is granted * chore(ea): log legacy entitlements when no game licence is granted * chore(ea): log only the refused game's own entitlements * fix(ea): skip trial launchers flagged 1 and license games whose LSX peer Android cannot name
3.1 KiB
3.1 KiB
EA store
EA games install, update and start without the EA app. The research behind it is in ea-ubisoft-stores.md.
Pieces
| Piece | Where | What it does |
|---|---|---|
| Sign-in | stores/ea/EaAuth.kt, EaLogin in EaBackend.kt |
JUNO_PC_CLIENT OAuth with PKCE in the store login WebView; the code comes back on EA's qrc:///html/login_successful.html redirect. Tokens refresh with the refresh token. |
| Library | EaApi.kt, EaLibrary.kt |
Owned games (getPreloadedOwnedGames, EA storefront), their offers (getLegacyCatalogDefs) and art (GameImages, SteamGridDB when EA has no portrait). Editions of one game collapse onto the base offer; trials, DLC and non-downloadable offers are left out. |
| Queries | app/src/main/resources/ea/graphql/*.gql |
EA's own query texts, byte for byte. The gateway matches persisted queries by SHA-256, so these files must not be reformatted (-text in .gitattributes). |
| Downloads | Rust src/ea/ in libdroiddeckstores.so, EaInstaller.kt |
A build is one ZIP on EA's CDN. The engine reads its central directory with ranged reads, keeps files whose size and CRC match, and streams every other entry through inflate into place. .droiddeck-ea-files records what it placed, so a resume or update does not re-hash those files; files a new build drops are removed. |
| Updates | EaUpdates in EaBackend.kt |
The game page compares the installed version with the offer's live gameVersion (every 30 minutes at most). Update runs the same install, which only fetches changed files. |
| Launch, guest | droiddeck-store-launch (prepare_ea) |
Creates the prefix, reads the machine as Wine reports it (wmic, vol, hostname; cached in pfx/.droiddeck-ea-hw.json), writes EA app presence keys and the game's Install Dir keys in both registry views, runs the build's Touchup once per installed build, then asks the app for the session and writes any licence files. |
| Launch, app | EaLaunch.kt, EaOoa.kt, EaLsx.kt |
Answers ea-prepare: starts the LSX endpoint on 127.0.0.1:3216, mints the short-lived opaque token, writes .droiddeck-ea-env (read once and deleted by the launcher .bat), and for games with a Core folder requests an online-activation licence for the machine hash. |
| LSX | EaLsx.kt |
The local endpoint EA's SDK talks to instead of the EA app: challenge, AES session key, config, profile, settings, game info, auth codes for the game's own client ids, licences with Denuvo tokens, entitlements. Friends, presence and the overlay answer empty. |
Machine hash
The licence names a hash of the machine the game's activation layer computes itself. The hash
version follows the activation library's product version (Core/activation.dll or awc.dll):
5.x → 4, 4.7.6+ → 3, 4.7.x → 2, 4.x → 1. Versions 2 and 3 also need CPUID leaf 1 ECX, which Wine's
WMI does not expose, so those use 00000000 unless the probe learns it.
Not done yet
- Cloud saves (
cloudsync.juno.ea.com). - Steam copies of EA games still install the EA app (#2036).
- Pre-DiP games (no
installerdata.xml) fall back to the exe picker. - Javelin anti-cheat games do not run under Proton.