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| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Noam Asor
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5dbe3314a1
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fix(auth): support GitHub Enterprise Copilot OAuth domain (#2192)
## Description Adds GitHub Enterprise OAuth domain support for Copilot auth. When `GITHUB_COPILOT_ENTERPRISE_URL` is set, the default OAuth domain resolves to that enterprise host; explicit `--domain` values still take precedence. Closes #1152 ## Type of Change - [x] Bug fix (non-breaking change that fixes an issue) - [ ] New feature (non-breaking change that adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to change) - [x] Documentation update - [ ] Performance improvement - [ ] Code refactoring (no functional changes) ## Changes Made - `headroom/copilot_auth.py`: derive the default OAuth domain from `GITHUB_COPILOT_ENTERPRISE_URL` when present, falling back to `github.com` for unset or blank values. - `headroom/cli/copilot_auth.py`: keep explicit CLI domain overrides authoritative even when the enterprise env var is set. - `README.md`: document the enterprise OAuth environment setting and precedence. - Added regression tests for enterprise URL handling, blank/unset fallback, and explicit CLI override precedence. ## Testing - [x] Unit tests pass (`pytest`) - [x] Linting passes (`ruff check .`) - [ ] Type checking passes (`mypy headroom`) - [x] New tests added for new functionality - [x] Manual testing performed ### Test Output ```text uv run pytest tests/test_copilot_auth.py tests/test_cli/test_copilot_auth.py -q 69 passed in 1.05s uvx ruff@0.15.17 check headroom/cli/copilot_auth.py headroom/copilot_auth.py tests/test_cli/test_copilot_auth.py tests/test_copilot_auth.py All checks passed! uvx ruff@0.15.17 format --check headroom/cli/copilot_auth.py headroom/copilot_auth.py tests/test_cli/test_copilot_auth.py tests/test_copilot_auth.py 4 files already formatted ``` ## Real Behavior Proof - Environment: Windows 11 development checkout, Python 3.13.3, with focused Copilot auth tests using monkeypatched enterprise env vars. - Exact command / steps: ran the Copilot auth unit/CLI tests plus ruff check and format-check against the touched auth files and tests. - Observed result: `GITHUB_COPILOT_ENTERPRISE_URL=https://ghe.example.com` resolves `default_oauth_domain()` to `ghe.example.com`; unset/blank enterprise env vars fall back to `github.com`; and `headroom copilot-auth login --domain github.com` still honors the explicit override when enterprise env vars are set. - Not tested: live OAuth against a real GitHub Enterprise Server instance. ## Review Readiness - [x] I have performed a self-review - [x] This PR is ready for human review ## Checklist - [x] My code follows the project's style guidelines - [x] I have performed a self-review of my code - [x] I have made corresponding changes to the documentation - [x] My changes generate no new warnings - [x] I have added tests that prove my fix is effective or that my feature works - [x] New and existing unit tests pass locally with my changes - [x] I have updated the CHANGELOG.md if applicable ## Screenshots (if applicable) N/A - CLI/auth behavior and README update. ## Additional Notes `GITHUB_COPILOT_ENTERPRISE_URL` takes precedence over `GITHUB_COPILOT_ENTERPRISE_DOMAIN`; explicit `--domain` remains authoritative for the login command. --------- Co-authored-by: JerrettDavis <mxjerrett@gmail.com> Co-authored-by: Tejas Chopra <chopratejas@gmail.com> |
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Joel Belanger
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0b4a4bd483
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fix: support Copilot Business subscription auth (#641)
## Description Adds a first-party `headroom copilot-auth login` flow for Copilot subscription mode and uses the resulting Copilot OAuth token to perform GitHub's Copilot token exchange before launching the wrapped Copilot CLI. This fixes Business/Enterprise Cloud accounts where a generic GitHub/Copilot token can read Copilot account metadata but is rejected by the Copilot token exchange endpoint. It also avoids treating GitHub.com Enterprise Cloud account URLs such as `github.com/enterprises/acme` as API hostnames. Fixes #635 Related: #488, #610 Builds on #576 ## Type of Change - [x] Bug fix (non-breaking change that fixes an issue) - [x] New feature (non-breaking change that adds functionality) - [x] Documentation update - [ ] Breaking change (fix or feature that would cause existing functionality to change) - [ ] Performance improvement - [ ] Code refactoring (no functional changes) ## Changes Made - Adds `headroom copilot-auth login` and `headroom copilot-auth status`. - Stores a Headroom-specific Copilot OAuth token under Headroom's state dir. - Exchanges reusable Copilot OAuth tokens with Copilot Chat-compatible headers before subscription-mode launch. - Carries the resolved Copilot API endpoint into `headroom wrap copilot --subscription`. - Handles GitHub.com Enterprise Cloud URLs without synthesizing invalid `api.github.com/enterprises/...` hosts. - Adds focused unit tests and README guidance for subscription login. ## Testing - [x] Unit tests pass (`pytest`) - [x] Linting passes (`ruff check .`) - [ ] Type checking passes (`mypy headroom`) - [x] New tests added for new functionality - [x] Manual testing performed ### Test Output ```console ruff check headroom/copilot_auth.py headroom/cli/copilot_auth.py headroom/cli/main.py headroom/cli/__init__.py headroom/cli/wrap.py tests/test_copilot_auth.py tests/test_cli/test_copilot_auth.py tests/test_cli/test_wrap_copilot.py tests/test_copilot_subscription_smoke.py # All checks passed! ruff format --check headroom/copilot_auth.py headroom/cli/copilot_auth.py headroom/cli/main.py headroom/cli/__init__.py headroom/cli/wrap.py tests/test_copilot_auth.py tests/test_cli/test_copilot_auth.py tests/test_cli/test_wrap_copilot.py tests/test_copilot_subscription_smoke.py # 9 files already formatted python -m py_compile headroom/copilot_auth.py headroom/cli/copilot_auth.py headroom/cli/main.py headroom/cli/__init__.py headroom/cli/wrap.py tests/test_copilot_auth.py tests/test_cli/test_copilot_auth.py tests/test_cli/test_wrap_copilot.py tests/test_copilot_subscription_smoke.py uv run --no-project --with pytest --with pytest-asyncio --with click --with rich --with opentelemetry-api --with pydantic --with tiktoken --with 'litellm==1.82.3' --with fastapi --with uvicorn --with 'httpx[http2]' --with openai --with mcp --with magika --with zstandard --with websockets --with onnxruntime --with transformers --with watchdog --with sqlite-vec pytest tests/test_copilot_auth.py tests/test_cli/test_copilot_auth.py tests/test_cli/test_wrap_copilot.py tests/test_cli_proxy_env.py tests/test_copilot_subscription_smoke.py # 127 passed ``` Local note: `uv run pytest ...` against the project currently fails before running tests because `uv.lock` has an unrelated `gitpython` wheel/version mismatch. ## Manual Validation I tested this with an existing GitHub Copilot Business subscription associated with a GitHub.com Enterprise Cloud account. The Enterprise Cloud value I tested was in the form: ```text github.com/enterprises/<enterprise> ``` The tested flow was: ```text headroom copilot-auth login headroom wrap copilot --subscription -- --model gpt-5.4 ``` This validated that Headroom does not treat github.com/enterprises/<enterprise> as a Copilot API hostname. Instead, token exchange uses GitHub.com and Headroom routes subscription-mode traffic to the Copilot API endpoint returned by GitHub for the signed-in account. I did not test this with GitHub Enterprise Server or a custom enterprise domain such as ghe.example.com. No tokens, request IDs, or organization-specific identifiers are included in this PR. ## Real Behavior Proof - Environment: macOS Darwin, Python 3.12.7, local checkout on `codex/copilot-business-auth`. - Exact command / steps: Ran `headroom copilot-auth login`, then launched `headroom wrap copilot --subscription -- --model gpt-5.4` with a GitHub Copilot Business subscription tied to a GitHub.com Enterprise Cloud account. - Observed result: Headroom did not treat `github.com/enterprises/<enterprise>` as a Copilot API hostname; token exchange used GitHub.com and subscription traffic was routed to the Copilot API endpoint returned for the signed-in account. The latest focused Copilot auth/proxy tests pass locally (`127 passed`). - Not tested: GitHub Enterprise Server or custom enterprise domains such as `ghe.example.com`; Windows Credential Manager integration still needs confirmation from someone on Windows. ## Review Readiness - [x] I have performed a self-review - [x] This PR is ready for human review ## Checklist - [x] My code follows the project's style guidelines - [x] I have performed a self-review of my code - [x] I have commented my code, particularly in hard-to-understand areas - [x] I have made corresponding changes to the documentation - [x] My changes generate no new warnings - [x] I have added tests that prove my fix is effective or that my feature works - [x] New and existing targeted unit tests pass locally with my changes - [ ] I have updated the CHANGELOG.md if applicable ## Screenshots (if applicable) N/A ## Additional Notes Acknowledgement: the OAuth/token-exchange behavior was informed by `anomalyco/opencode-copilot-auth` by Aiden Cline. No tokens are printed by the new login/status commands; only a short SHA-256 fingerprint is displayed for troubleshooting. The interactive login is included because the missing piece is not just an Enterprise URL or routing hint. For GitHub.com Enterprise Cloud accounts, URLs like `github.com/enterprises/acme` identify the enterprise account but are not Copilot API hostnames; token exchange still happens through GitHub.com and then returns the account-specific Copilot API endpoint. A command-line enterprise argument can help for true GitHub Enterprise Server/custom-domain deployments, but it cannot produce the Copilot OAuth token class that the token-exchange endpoint accepts. Ideally, Headroom would avoid an extra interactive login and reuse an existing GitHub/Copilot CLI session everywhere. In practice, some reusable-looking tokens can read Copilot account metadata but are rejected by Copilot token exchange, which leaves Business/Enterprise Cloud users with missing model catalogs. The explicit login command is the smallest independent way to obtain and persist the token needed for that exchange without asking users to pass a secret on the command line. --------- Co-authored-by: jbelanger <your-username@users.noreply.github.com> |