test(e2e): add the outbound target matrix and the replication checksum postmortem
Defense work for rustfs#7082, the regression rustfs#6895 introduced while
fixing rustfs#6853: a fix for one target class changed a client default for
every target class and nothing in tree modeled the other classes.
- docs/postmortems: timeline, root cause, why four defense layers missed
it, and the SOP for changing any outbound client default; AGENTS.md and
the adversarial compatibility lens point at it; the two env knobs from
rustfs#6895 are documented in docs/operations.
- fake_s3_target: reject_aws_chunked_uploads, require_checksum_for_object_lock
(Content-MD5 always verified), create_bucket_with_object_lock with a
GetObjectLockConfiguration handler, and a TransportSnapshot on every
journal record.
- replication_target_matrix_test: six object shapes against four target
modes with an explicit expectation table; the two rustfs#7082 cells are
pinned KnownFailing and fail with an XPASS message once the fix lands.
Wired into e2e-repl-nightly, excluded from e2e-full.
* fix(kms): do not include secret value in static KMS format error
The malformed-format error message in build_static_kms_config embedded the
raw env var value. The most likely misconfiguration is setting
RUSTFS_KMS_STATIC_SECRET_KEY to the bare base64 key without the <key-name>:
prefix, in which case the full secret key material would be written to
startup logs. Drop the value from the message, matching the equivalent
parsing error in KmsConfig::from_env().
* chore(security): add guardrails against secret values in error strings
Follow-up to the PR #5222 review finding fixed in PR #5243: a config value
that fails secret-format parsing is typically the raw secret itself, and
error messages are log content — they propagate via ? and are printed by
startup/error logging far from the construction site.
Three layers so this class of leak is caught earlier next time:
- security-advisory-lessons: state explicitly that error/panic messages are
log content; parse-failure hints must name the env var and expected
format, never echo the input. Add a matching review prompt.
- adversarial-validation: add a security-reviewer probe that greps
error-construction sites on secret-bearing config paths for interpolation
of the raw value, including the duplicated-parse trap where the leak hid.
- check_logging_guardrails.sh: mechanical backstop — flag inline format
interpolation of secret-named identifiers (secret/password/passwd/
private_key) in checked files; add crates/kms/src/config.rs (the twin
parse site) to the checked list. Verified the check passes on the fixed
tree and catches the original leak at rustfs/src/init.rs:399.
Add Reuse Before You Write and Necessary Code Only sections to AGENTS.md,
promote quality probes into a dedicated seventh adversarial-validation
role (simplicity adversary), extend rust-code-quality checks, and dedupe
code-change-verification's restated Rust checklist into a pointer.
Add a default-on multi-role adversarial validation policy to the root
AGENTS.md (risk tiers, six reviewer roles, findings protocol, exit
criteria), a shared adversarial-validation skill with repo-specific
attack probes grounded in shipped bugs, seven audit fixes to the root
instruction files, and an actionlint gate for workflow changes.
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