[jdx]

https://entire.io/gh/jdx/mise/trails/466

The http: backend could only authenticate with netrc Basic auth, so tools hosted behind a bearer token or API-key header could not be installed. A common case is a binary stored as an OCI blob on ghcr.io, which rejects Basic auth on /v2/ blob requests and wants Authorization: Bearer base64(token). Previously a headers entry in the tool options was silently ignored and the install failed with a 401.

The http: backend now takes a headers table. Values are templates, so the secret can come from the environment:

[tools."http:polaris"]
version = "0.9.2"
headers = { Authorization = "Bearer {{ env.GITHUB_TOKEN | b64_encode }}" }

[tools."http:polaris".platforms]
linux-x64 = { url = "https://ghcr.io/v2/acme/polaris/blobs/sha256:...", format = "tar.gz" }

The headers are sent with the artifact download, the version_list_url request, and the checksum_url requests mise lock makes.

• Header values are marked sensitive so they stay out of debug output, and headers is ignored for install identity, so changing a token does not reinstall the tool.

• An undefined env var fails the install rather than sending the literal template.

• Headers are sent to the host in url only. On a redirect to another host, port, or scheme, every credential header is dropped for the rest of the chain, which is what GHCR's signed blob URLs need. This includes X-Api-Key-style headers, which reqwest would otherwise forward (it only strips Authorization, Cookie and Proxy-Authorization). To support that, requests carrying such a header follow redirects themselves; other requests are unchanged.

• To send a header to another host after a redirect (for example a CDN that needs the same key), list the hosts per header with headers_forward:

  headers = { X-Api-Key = "{{ env.KEY }}", Authorization = "Bearer {{ env.TOKEN }}" }
  headers_forward = { X-Api-Key = ["cdn.example.com", "*.assets.example.com"] }

  Here only X-Api-Key reaches those hosts; Authorization stays with the url host. Hosts are exact names or *. plus a suffix (no bare *), forwarding never steps down to plain HTTP, and a name that is not in headers is an error.

Not included: built-in GHCR token handling and a bearer-token credentials file, which the original request listed as alternatives.

Tested with the new e2e/backend/test_http_headers (401 without the header, success with it, version_list_url, unset variable, cross-host redirect for Authorization and X-Api-Key, same-host redirect keeps the header), plus the existing test_http_lock_checksum and test_http_ls_remote_current_opts. Clippy with -D warnings is clean. mise run lint still stops on an unrelated pre-existing unused dependency junction warning in crates/mise-util.

Relates to discussion #14014.

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---

Note

Medium Risk
Changes core HTTP redirect and credential handling for all scoped requests; mistakes could leak secrets on redirects or break authenticated downloads, though behavior is heavily tested and defaults to stripping credentials.

Overview
Adds headers and optional headers_forward to the http: backend so installs can authenticate with bearer tokens, API keys, and similar headers (not just netrc Basic auth). Values are Tera templates; missing env vars fail the install instead of sending literal {{ ... }}. Headers apply to artifact downloads, version_list_url, and checksum_url / lock flows; configured Authorization replaces automatic host tokens via with_host_auth.

The shared HTTP client now follows redirects manually when requests carry credentials reqwest would forward (e.g. X-Api-Key). By default, credential headers are dropped on cross-host/port/scheme hops (GHCR-style signed URLs); headers_forward allowlists per-header hosts (exact or *.suffix, never downgrading HTTPS→HTTP). Internal x-mise-forward-* headers carry rules through retries; get_text_cached_with_headers keys the in-process cache by URL plus a header digest (not raw secrets). Version-listing option digests now include table options like headers.

Docs, JSON schema, unit tests in auth.rs, and e2e/backend/test_http_headers cover redirect and validation behavior.

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Summary by CodeRabbit

• New Features
  • HTTP backends can now send custom, templated headers with artifact downloads, version-list requests, and checksum lookups.
  • Headers are limited to the original host by default. You can allow specific headers to be forwarded to approved hosts on redirects; credentials are not forwarded to insecure HTTP destinations.
  • Header-aware caching keeps responses for different header values separate.
• Bug Fixes
  • Listing options with table values are now included when calculating option digests.
• Documentation
  • Added guidance for configuring request headers and redirect forwarding.

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📥 Commits

Reviewing files that changed from the base of the PR and between af07b71 and 7d7b272.

📒 Files selected for processing (8)

• crates/mise-util/src/http.rs
• crates/mise-util/src/http/tests/auth.rs
• docs/dev-tools/backends/http.md
• e2e/backend/test_http_headers
• schema/mise-task.json
• schema/mise.json
• src/backend/http.rs
• src/backend/version_list.rs

📝 Walkthrough

Walkthrough

The HTTP backend now accepts templated request headers for artifact downloads, version-list requests, and checksum requests. Header-aware HTTP client methods send these headers and distinguish cached text requests by header values. The HTTP client also scopes credentials across redirects.

Changes

HTTP backend request headers

Layer / File(s)	Summary
Header-aware HTTP and redirect handling crates/mise-util/src/http.rs	HTTP client methods accept caller-supplied headers. Cached text requests include a digest of nonempty headers in the cache key. Credential-bearing requests use manual redirect handling that clears credentials when the origin changes and refuses HTTPS-to-HTTP redirects.
Header-aware fetch helpers src/backend/static_helpers.rs, src/backend/version_list.rs	Checksum helpers and version-list fetching pass supplied headers to HTTP requests. Strict template rendering supports an optional version and propagates rendering errors.
Backend header validation and request wiring schema/mise.json, schema/mise-task.json, src/backend/http.rs, src/backend/mod.rs	Both schemas accept string-valued headers. The backend renders and validates configured headers for version-list, checksum, and artifact requests. Table-valued listing options contribute to the listing digest.
Documented and tested header behavior docs/dev-tools/backends/http.md, e2e/backend/test_http_headers, crates/mise-util/src/http/tests/*	Documentation and tests cover templating, redaction, authenticated requests, cache separation, and credential handling across redirects.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~30 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant HttpBackend
  participant HttpOptions
  participant HttpClient
  participant ArtifactServer
  HttpBackend->>HttpOptions: Build headers for the requested version
  HttpOptions-->>HttpBackend: Return validated header map
  HttpBackend->>HttpClient: Request artifact with headers
  HttpClient->>ArtifactServer: Send request
  ArtifactServer-->>HttpClient: Return response or redirect
  HttpClient->>HttpClient: Clear credentials when redirect origin changes

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Suggested reviewers: marukome0743

Merge Risk: 🔵 Low · up to af07b

Changing a header token can leave a version listing stale and skip the expected authentication check. The impact is bounded, but the listing cache key should be corrected before relying on credential changes to refresh results.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 54.90% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 51 functions across 7 files. (3 skipped: …	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: adding a headers option to the HTTP backend for bearer and API-key authentication.

Full details: Docstring Coverage

Explanation

Docstring coverage is 54.90% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 51 functions across 7 files. (3 skipped: 3 unsupported.)

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Stale Bugbot comment from a previous run.

[greptile-apps]

Confidence Score: 5/5

[High risk] Adds custom headers to HTTP requests for authentication.

The latest changes appear safe to merge; they preserve forwarding rules without sending internal headers to servers.

What we checked:

• Internal headers reaching the server: send_once_inner splits out forwarding rules before sending through either the relay or the HTTP client. Both changed retry paths call it again.

Summary

Adds templated headers and per-header headers_forward options to the http: backend. Downloads, version lists, and checksum requests can use these headers, while caches keep different credentials separate.

• The latest changes preserve forwarding rules during GitHub OAuth refresh and IP allow-list retries.
• A unit test checks that the rules survive splitting and reattaching.
• No new actionable issues or mounted-rule violations were found. No tests were run during this review.

_{Reviews (5) · Last reviewed commit: "fix(http): keep headers_forward rules ac..."}

[coderabbitai]

Actionable comments posted: 1

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⚠️ Outside diff range comments (1)

🟡 Minor · Separate checksum cache entries by request headers. · http.rs:832-858

crates/mise-util/src/http.rs:832-858
🎯 Functional Correctness | 🟡 Minor | ⚡ Quick win

Separate checksum cache entries by request headers.

During mise lock, HttpBackend::resolve_lock_checksum builds headers from each tool version’s headers option and fetches the checksum URL through get_text_cached_with_headers. That method documents a same-headers precondition, but the backend accepts independent per-tool header maps and does not enforce it. The process-wide cache uses only the URL as its key and stores errors as well as response bodies. If two HTTP tools use the same checksum URL with different headers, the later lookup can reuse the first result without sending its own headers. It can use another tool’s response to resolve a checksum, or reuse an error even when its own request would succeed. Key cache entries by URL and headers, or bypass this cache for header-aware requests.

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Review comment at @crates/mise-util/src/http.rs around lines 832 - 858:
Update get_text_cached_with_headers so requests with different HeaderMap values
cannot share cached results: include the headers in the cache key, or bypass the
shared cache for header-aware requests. Preserve caching for requests with
identical URL-and-header combinations and ensure errors are not reused across
differing headers.

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Inline comments:
Review comments at @schema/mise.json:
- Around line 3548-3554: Update the included-task schema to include the new
`headers` option from the main schema, so included task files receive matching
schema completion. Regenerate `schema/mise-task.json` using the project’s
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---

Outside diff comments:
Review comments at @crates/mise-util/src/http.rs:
- Around line 832-858: Update get_text_cached_with_headers so requests with
different HeaderMap values cannot share cached results: include the headers in
the cache key, or bypass the shared cache for header-aware requests. Preserve
caching for requests with identical URL-and-header combinations and ensure
errors are not reused across differing headers.

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📥 Commits

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📒 Files selected for processing (7)

• crates/mise-util/src/http.rs
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• e2e/backend/test_http_headers
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• src/backend/http.rs
• src/backend/static_helpers.rs
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Actionable comments posted: 1

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Inline comments:
Review comments at @src/backend/mod.rs:
- Around line 269-280: Update listing_option_digest to include a digest of the
rendered values returned by opts.headers(None) in its cache context, so changes
in rendered header values change the cache key. Include only the digest, not the
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📥 Commits

Reviewing files that changed from the base of the PR and between a275e94 and af07b71.

📒 Files selected for processing (8)

• crates/mise-util/src/http.rs
• crates/mise-util/src/http/tests/auth.rs
• crates/mise-util/src/http/tests/retry.rs
• docs/dev-tools/backends/http.md
• e2e/backend/test_http_headers
• schema/mise-task.json
• src/backend/http.rs
• src/backend/mod.rs

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[github-actions]

Instruction counts

Nothing was compared, and so nothing was gated. No series appears on both sides: either the base has no measurements recorded, or the two were measured on different runner classes, which are deliberately not comparable — counts shift between machine types by more than a real regression does.

New, nothing to compare against: env on jdx-perf-v1-ubuntu24.04-x64-mise-rust1.97.1-img5263c143, hook-env on jdx-perf-v1-ubuntu24.04-x64-mise-rust1.97.1-img5263c143, ls on jdx-perf-v1-ubuntu24.04-x64-mise-rust1.97.1-img5263c143, registry on jdx-perf-v1-ubuntu24.04-x64-mise-rust1.97.1-img5263c143, startup on jdx-perf-v1-ubuntu24.04-x64-mise-rust1.97.1-img5263c143

_{Only instruction counts gate. Wall clock is shown for context — on identical hardware it moves 4-20% run to run.}

_{Measured by tak — instruction-counted CLI benchmarks, stored in this repository's git notes.}

_{7d7b272eee23 vs 2f0975c0e883 · measured on the runner, not pushed to the history.}