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fix(env): redact caller-provided values for required env directives - #12017
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A `required = true` env directive validates that the caller set the variable
but never assigns it, so its value never reached the map that redaction
registration consults. `redactions` globs and `redact = true` therefore did
nothing for exactly the variables a config declares as secret inputs, and the
caller's value was printed verbatim in task output.
Three defects, one mechanism:
1. Caller-provided values for `required` variables were never redacted, on
either task-env path. This is the reported bug.
2. `default` had the same gap in its caller-wins branch: it pushed the key onto
the redaction list but, having assigned nothing, left no value to resolve
that key against. The config fallback was redacted and the caller's override
that actually won was not -- the more dangerous half of the pair.
3. `redact = false` on a `required` variable was ignored on the
`TaskContextBuilder` path, which over-redacted rather than leaked. That path
matches global patterns against the full env, and a required directive
recorded no exclusion for it to honour, so an explicit opt-out did nothing.
This is a visible output change for anyone relying on that path's current
behavior.
The two task-env resolution paths also disagreed. `Task::render_env`, taken
when the task's own config file has no `[env]` table, passed only the
task-declared env map, while `TaskContextBuilder::resolve_task_env_with_config`
passed the full env, so the same task config leaked or redacted depending on
whether an unrelated `[env]` table existed.
Record such keys in `EnvResults::caller_env_keys` and resolve their values from
the caller environment at registration time via `EnvResults::redactable_env`.
Required directives still never assign.
Rejected the smaller change of handing `render_env` the full env, which would
also have covered undeclared caller variables: on that path a config-level
`redact = false` exclusion is not visible, so a global config carrying
`redactions = ["*TOKEN*"]` and `TEST_TOKEN = { value = "e", redact = false }`
would register the single character `e` as a redaction pattern and mangle every
line of task output. Scoping registration to declared keys avoids registering
values mise was never told about. `render_env` now also carries over
config-level exclusions the way the task-context path already did, so a task
that merely declares a variable `required` cannot resurrect an exclusion the
config set; a task *assignment* still overrides it.
On over-matching: redaction is Aho-Corasick substring replacement with no word
boundaries, so a short secret rewrites unrelated text. A caller value of `test`
mangles `latest` and `contest` identically whether it arrives through a
`required` directive, a plain assignment, or the `value = "{{env.X}}"`
rebinding this bug forced people to use. That equivalence is the property under
test: required registers its value exactly as an assignment does, no wider and
no narrower. Empty values are the degenerate case and were already filtered by
`Redactor::new`.
Only key names enter `CachedNonToolEnv`, never caller-supplied values, and the
`required` insert is unconditional so the cached set depends on the config
alone -- the non-tool env cache key does not include the caller environment.
`#[serde(default)]` on the new field cannot silently disable the fix across an
upgrade: the cache key hashes `CARGO_PKG_VERSION` and `load` deletes any entry
whose recorded version differs from the running one.
Still divergent, deliberately: an undeclared caller variable matching a global
pattern is redacted on the task-context path and not on the `render_env` path.
Aligning it means either removing existing redaction or registering arbitrary
caller values as patterns, which is how a one-character `LANG=C` becomes a
global pattern. That divergence is a broader defect than this fix and belongs
in its own change.
Co-Authored-By: Claude <noreply@anthropic.com>
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🚧 Files skipped from review as they are similar to previous changes (2)
📝 WalkthroughWalkthroughRequired and caller-overridden environment values now participate in redaction. ChangesCaller environment redaction
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: ⚪ Minimal · up to The change correctly covers caller-provided values for required and default environment directives, with corresponding tests and documentation; no actionable merge-blocking risk remains beyond normal checks. Sequence Diagram(s)sequenceDiagram
participant Caller
participant Config
participant EnvResults
participant Task
participant Redaction
Caller->>Config: provide environment values
Config->>EnvResults: resolve or restore environment
EnvResults->>EnvResults: track caller_env_keys
Config->>Redaction: register redactable_env
Task->>EnvResults: obtain task environment
Task->>Redaction: register merged exclusions and values
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Inline comments:
In `@e2e/tasks/test_task_required_redactions`:
- Around line 105-111: Add coverage for the caller-overridden default through
the TaskContextBuilder path by adding an unrelated entry in the config-level
[env] table while preserving the existing DEF_TOKEN task setup and caller
override. Keep the assertion verifying the caller value is redacted, ensuring
both Task::render_env and TaskContextBuilder behavior are exercised.
In `@src/config/env_directive/mod.rs`:
- Line 572: Update the EnvDirective::Rm branch to remove the deleted key from
caller_env_keys as well as env, preventing redactable_env from restoring it. Add
coverage for both Default followed by Rm and Required followed by Rm, verifying
the caller-key metadata is cleared.
🪄 Autofix
Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
ℹ️ Review info
⚙️ Run configuration
Configuration used: Repository YAML (base), Central YAML (inherited), Organization UI (inherited)
Review profile: CHILL
Plan: Pro Plus
Run ID: eb73066e-6cd7-4d84-a112-48c20b93f4ac
📒 Files selected for processing (6)
docs/environments/index.mde2e/tasks/test_task_required_redactionssrc/config/env_directive/mod.rssrc/config/mod.rssrc/task/mod.rssrc/toolset/env_cache.rs
Contributor
Greptile SummaryThis PR extends task-output redaction to caller-provided values used by required directives and caller-overridden defaults.
Confidence Score: 5/5The PR appears safe to merge. No blocking failure remains. Important Files Changed
Reviews (2): Last reviewed commit: "fix(env): drop a removed key's caller va..." | Re-trigger Greptile |
A later directive removing a key already cleared `redaction_exclusions` but not `caller_env_keys`, so `redactable_env` kept resolving the caller's value for a variable the config had explicitly removed. The task cannot reach that variable, so registering its value only widens redaction: with a short value it rewrites unrelated output, which is the failure mode the one-character exclusion guard elsewhere in this change exists to prevent. Reverting the one-line removal turns the new e2e case from `version 1.2.3` into `v[redacted]rsion 1.2.3` and fails the new unit test, so neither is vacuous. Also covers the caller-overridden `default` on the `TaskContextBuilder` path. The PR claims every path-sensitive case runs on both paths and this one did not, so the claim was wider than the test. Both found by CodeRabbit on jdx#12017. Co-Authored-By: Claude <noreply@anthropic.com>
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Problem
A
required = trueenv directive validates that the caller set a variable but never assigns it. Its value therefore never reached the map that redaction registration consults, soredactionsglobs andredact = truedid nothing for exactly the variables a config declares as secret inputs:Both a global glob and a task-level
redact = trueapply here, and neither takes effect.Three defects, one mechanism
1. Caller-provided values for
requiredvariables were never redacted. TheEnvDirective::Requiredarm recorded nothing when resolving env: noredactionspush forredact = true, and no exclusion forredact = false.2.
defaulthad the same gap in its caller-wins branch — the more dangerous half of the pair. It pushed the key onto the redaction list but, having assigned nothing, left no value to resolve that key against. The result was backwards: the config fallback was redacted, and the caller's override that actually won was printed in the clear.3.
redact = falseon arequiredvariable was ignored on theTaskContextBuilderpath. That path matches global patterns against the full environment, and a required directive recorded no exclusion for it to honour, so an explicit opt-out did nothing and the variable was masked anyway.This one over-redacted rather than leaked, and fixing it is a visible behavior change: a variable that previously printed as
[redacted]on that path now prints its real value, as the config asked. It is called out separately because it moves output in the opposite direction from the rest of this change, and anyone who had come to rely on the incorrect masking will notice.Underlying all three, the two task-env resolution paths disagreed.
Task::render_env— taken when the task's own config file has no[env]table — passed only the task-declared env map to redaction registration, whileTaskContextBuilder::resolve_task_env_with_configpassed the full environment. The same task config therefore leaked or redacted depending on whether an unrelated[env]table happened to exist.Fix
Record these keys in
EnvResults::caller_env_keys(names only, never values) and resolve their values from the caller environment at registration time via the newEnvResults::redactable_env. Required directives still never assign — they remain validation-only, and an assigned value always wins over a caller-supplied one.I rejected the smaller change of simply handing
render_envthe full environment, which would also have covered undeclared caller variables. On that path a config-levelredact = falseexclusion is not visible, so a global config carryingredactions = ["*TOKEN*"]andTEST_TOKEN = { value = "e", redact = false }would register the single charactereas a redaction pattern and rewrite every line of task output:Scoping registration to keys the config actually declares avoids registering values mise was never told about.
render_envnow also carries over config-level exclusions the way the task-context path already did, so a task that merely declares a variablerequiredcannot resurrect an exclusion the config set — a task assignment still overrides it, matching existing behavior.On over-matching
Redaction is Aho-Corasick substring replacement with no word boundaries, so a short secret rewrites unrelated text. This is pre-existing behavior, and the property worth checking is that
requireddoes not differ from it. With a caller value oftestand outputinstalling latest; contest; value=$X:required(this change)installing la[redacted]; con[redacted]; value=[redacted]redact = trueinstalling la[redacted]; con[redacted]; value=[redacted]value = "{{env.X}}"rebindinginstalling la[redacted]; con[redacted]; value=[redacted]Byte-identical across all three. This change introduces no new over-matching class — it makes
requiredbehave exactly like every other redacted variable, no wider and no narrower. That equivalence is pinned as a test rather than the current output being pinned, so a future change to how required values are registered breaks loudly. Empty values are the degenerate case of the same concern and were already filtered byRedactor::new.On the env cache
Only key names enter
CachedNonToolEnv, never caller-supplied values. Therequiredinsert is unconditional, so the cached set depends on the config alone — which matters because the non-tool env cache key does not include the caller environment.#[serde(default)]on the new field cannot silently disable the fix across an upgrade. There are two independent guards, both pre-existing:compute_cache_key(src/toolset/env_cache.rs:323) hashesCARGO_PKG_VERSIONinto the key, so an entry written by an older binary is never looked up; andload(:380-388) compares the entry's recordedmise_versionagainst the running one, deletes the file, and returnsNoneon mismatch.The residual is same-version-string rebuilds with a warm cache — a development scenario, bounded by
env_cache_ttl, and identical to the exposure the pre-existingredaction_exclusions#[serde(default)]already carries. The same guards cover the opposite direction, where a stale entry missing exclusions would mask more than the config asked.Out of scope
An undeclared caller variable matching a global
redactionspattern is redacted on theTaskContextBuilderpath and not on therender_envpath. This change does not align them.Aligning them means choosing between removing redaction that users may currently depend on, and registering arbitrary caller environment values as global substring patterns — which is how a one-character value such as
LANG=Cbecomes a pattern that rewrites unrelated output. That divergence is a broader defect than this fix and is reported separately.Tests
e2e/tasks/test_task_required_redactions— 14 assertions covering caller-only values, directrequired+redact = true, inherited task templates viaextends, explicit{{env.X}}rebinding,redact = false, empty values, adefaultthe caller overrides,--raw, the one-character exclusion guard, and the over-matching equivalence. Every case whose behavior differed by path is run on both paths.Five unit tests in
src/config/env_directive/mod.rs:test_required_records_caller_key_without_assigningtest_required_redact_false_excludes_keytest_bare_required_preserves_earlier_redaction_exclusiontest_redactable_env_prefers_assigned_valuetest_default_records_caller_key_when_caller_winsdocs/environments/index.mdis updated in both the Redactions and Required Variables sections.The
--all-targetsgates were originally run with the one-line fix from #11989 applied locally, sincemaindid not compile its own test targets at the time. That fix has since merged, so they now run againstmainunmodified.AI-assisted — Tool: Claude Code; model: anthropic/claude-opus-5; version: 2.1.232.
Summary by CodeRabbit
New Features
Bug Fixes