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fix(extensions,presets,workflows): resolve private GHES release assets via /api/v3 (#3157)
* feat(auth): add github_provider_hosts() to enumerate GHES hosts from auth.json Assisted-by: Claude Code (model: claude-sonnet-4-6, autonomous) * fix(extensions): resolve GHES release assets via /api/v3 Generalizes resolve_github_release_asset_api_url to GitHub Enterprise Server hosts (gated by auth.json github hosts), fixing private GHES extension/preset downloads. github/spec-kit#3147 Assisted-by: Claude Code (model: claude-sonnet-4-6, autonomous) * fix(extensions,presets): pass auth.json github hosts into release resolver Assisted-by: Claude Code (model: claude-sonnet-4-6, autonomous) * docs(auth): document GHES private catalog + release-asset auth Assisted-by: Claude Code (model: claude-sonnet-4-6, autonomous) * fix(presets,workflows): pass auth.json github hosts into remaining release resolvers Wires preset add --from and workflow add through github_provider_hosts() so private GHES release assets resolve via /api/v3 there too. github/spec-kit#3147 Assisted-by: Claude Code (model: claude-sonnet-4-6, autonomous) * test(presets): use module-level io.BytesIO in GHES preset test Addresses Copilot review on PR #3157: drop unnecessary __import__("io") in test_preset_add_from_ghes_release_url_resolves_via_api_v3 since io is already imported at module level. * fix(github-http): pass through GHES asset API URLs by path shape Addresses Copilot review on PR #3157. A direct GHES /api/v3 release asset URL was only returned as already-resolved when its host was in the allowlist; otherwise the resolver returned None and the caller downloaded the same URL without 'Accept: application/octet-stream', fetching JSON metadata instead of the binary. Gate the passthrough on path shape alone, mirroring the github.com case. This is safe: passthrough returns the input URL unchanged and the caller fetches it either way, so no new request to an arbitrary host is induced; the token stays independently gated by auth.json in open_url. The allowlist remains the anti-SSRF gate on the tag-lookup resolving path. Add test_passthrough_for_unlisted_ghes_api_asset_url.
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@@ -118,6 +118,20 @@ def build_request(url: str, extra_headers: dict[str, str] | None = None) -> urll
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return urllib.request.Request(url, headers=headers)
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def github_provider_hosts() -> tuple[str, ...]:
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"""Return host patterns from every ``github`` provider entry in ``auth.json``.
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Used to classify which hosts are GitHub Enterprise Server instances when
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resolving release-asset download URLs. Returns an empty tuple when no
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``auth.json`` exists or it contains no ``github`` entries.
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"""
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hosts: list[str] = []
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for entry in _load_config():
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if entry.provider == "github":
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hosts.extend(entry.hosts)
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return tuple(hosts)
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def open_url(
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url: str,
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timeout: int = 10,
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