refactor: route Codex auth through AuthProvider (#18811)

## Summary

This PR moves Codex backend request authentication from direct
bearer-token handling to `AuthProvider`.

The new `codex-auth-provider` crate defines the shared request-auth
trait. `CodexAuth::provider()` returns a provider that can apply all
headers needed for the selected auth mode.

This lets ChatGPT token auth and AgentIdentity auth share the same
callsite path:
- ChatGPT token auth applies bearer auth plus account/FedRAMP headers
where needed.
- AgentIdentity auth applies AgentAssertion plus account/FedRAMP headers
where needed.

Reference old stack: https://github.com/openai/codex/pull/17387/changes

## Callsite Migration

| Area | Change |
| --- | --- |
| backend-client | accepts an `AuthProvider` instead of a raw
token/header |
| chatgpt client/connectors | applies auth through
`CodexAuth::provider()` |
| cloud tasks | keeps Codex-backend gating, applies auth through
provider |
| cloud requirements | uses Codex-backend auth checks and provider
headers |
| app-server remote control | applies provider headers for backend calls
|
| MCP Apps/connectors | gates on `uses_codex_backend()` and keys caches
from generic account getters |
| model refresh | treats AgentIdentity as Codex-backend auth |
| OpenAI file upload path | rejects non-Codex-backend auth before
applying headers |
| core client setup | keeps model-provider auth flow and allows
AgentIdentity through provider-backed OpenAI auth |

## Stack

1. https://github.com/openai/codex/pull/18757: full revert
2. https://github.com/openai/codex/pull/18871: isolated Agent Identity
crate
3. https://github.com/openai/codex/pull/18785: explicit AgentIdentity
auth mode and startup task allocation
4. This PR: migrate Codex backend auth callsites through AuthProvider
5. https://github.com/openai/codex/pull/18904: accept AgentIdentity JWTs
and load `CODEX_AGENT_IDENTITY`

## Testing

Tests: targeted Rust checks, cargo-shear, Bazel lock check, and CI.
This commit is contained in:
efrazer-oai
2026-04-23 17:14:02 -07:00
committed by GitHub
Unverified
parent a9f75e5cda
commit 5882f3f95e
55 changed files with 551 additions and 490 deletions
@@ -1943,7 +1943,7 @@ impl CodexMessageProcessor {
});
};
if !auth.is_chatgpt_auth() {
if !auth.uses_codex_backend() {
return Err(JSONRPCErrorError {
code: INVALID_REQUEST_ERROR_CODE,
message: "chatgpt authentication required to notify workspace owner".to_string(),
@@ -1998,7 +1998,7 @@ impl CodexMessageProcessor {
});
};
if !auth.is_chatgpt_auth() {
if !auth.uses_codex_backend() {
return Err(JSONRPCErrorError {
code: INVALID_REQUEST_ERROR_CODE,
message: "chatgpt authentication required to read rate limits".to_string(),
@@ -5909,8 +5909,8 @@ impl CodexMessageProcessor {
let environment_manager = self.thread_manager.environment_manager();
let runtime_environment = match environment_manager.default_environment() {
Some(environment) => {
// Status listing has no turn cwd. This fallback is used by
// stdio MCPs whose config omits `cwd`.
// Status listing has no turn cwd. This fallback is used only
// by executor-backed stdio MCPs whose config omits `cwd`.
McpRuntimeEnvironment::new(environment, config.cwd.to_path_buf())
}
None => McpRuntimeEnvironment::new(
@@ -6414,7 +6414,7 @@ impl CodexMessageProcessor {
let auth = self.auth_manager.auth().await;
if !config
.features
.apps_enabled_for_auth(auth.as_ref().is_some_and(CodexAuth::is_chatgpt_auth))
.apps_enabled_for_auth(auth.as_ref().is_some_and(CodexAuth::uses_codex_backend))
{
self.outgoing
.send_response(