Localizing inbound relay media spends the agent's own Buzz credentials on
a URL chosen by the sender, so it must not run on the strength of the
adapter's local allow-list alone. Require the gateway's authorization
callback to return an explicit True before any `buzz media get` runs; a
denial, a missing callback, or a raising callback fails closed and leaves
the message text exactly as it arrived.
`_is_sender_authorized` previously wrapped the callback result in
`bool()`, so a truthy non-boolean (a status string, a sentinel) would
satisfy an `is True` gate's intent while bypassing its guarantee. Only
the literal booleans now propagate; anything else is "unknown", which the
existing Slack and Discord callers already treat as trust-unknown.
Reviewers asked for this boundary on the sibling inbound-media PRs
(#77734, #78051); it applies equally to the retrieval path in #75614,
which this change builds on.
Compose the two salvaged approaches (#78065 + #78511):
- Keep #78065's terminal-only scrub-path exemption (first-party prefix
predicate in _make_run_env / _sanitize_subprocess_env, plain env values
never scope-resolved, snapshot exclusion for cross-profile isolation,
every non-terminal surface sealed).
- Fold #78511's BUZZ_MANAGED_AGENT signal into a context gate instead of
an import-time blocklist discard: the blocklist is shared by every
scrub surface, so discarding there would leak BUZZ_PRIVATE_KEY into
execute_code / hermes_subprocess_env children too.
- New gate _buzz_terminal_context_active(): BUZZ_MANAGED_AGENT in the
process env (Buzz Desktop buzz-acp harness, #76243) OR the live
session's platform is buzz (HERMES_SESSION_PLATFORM ContextVar,
concurrency-safe under a multi-session gateway). A Telegram/CLI/cron
session on a host that also runs a Buzz gateway does NOT get the
signing key in its terminal children (maintainer triage note on
#76243: don't expose the key to unrelated shell commands).
- Snapshot exclusion stays prefix-only (conservative even when the gate
is inactive).
- Tests updated for the gate + new negative test (non-Buzz session
strips) and positive test (buzz session platform enables carve-out);
docs updated accordingly.
Closes#78026, closes#76243.
Buzz platform agents could not use the `buzz` CLI from the terminal tool:
the BUZZ_* vars (BUZZ_PRIVATE_KEY, BUZZ_AUTH_TAG, BUZZ_RELAY_URL, and the
other BUZZ_* names) are added to _HERMES_PROVIDER_ENV_BLOCKLIST from the
buzz plugin.yaml (messaging category), and env_passthrough refuses to
re-allow anything in the blocklist (GHSA-rhgp-j443-p4rf). In the reported
`hermes acp` scenario the Buzz adapter's register() is never invoked, so
the agent runs in-process and its terminal uses _make_run_env directly —
there was no path for the platform credentials to reach terminal children.
Fix: a terminal-only, first-party carve-out in the scrub paths themselves
(not adapter registration). BUZZ_* vars pass through to foreground
(_make_run_env) and background/PTY (_sanitize_subprocess_env) terminal
children via a new prefix predicate (_TERMINAL_FIRST_PARTY_ENV_PREFIXES).
Everything else stays sealed and unchanged: the blocklist itself, the
env_passthrough refusal, execute_code scrubbing, hermes_subprocess_env
(browser/TUI-host/copilot-executor spawns), and docker children. The
GHSA-rhgp-j443-p4rf seal is preserved because no registration path is
opened; skills/config still cannot register these names.
Follow-up hardening from review:
- First-party matches use the merged env value directly instead of
_resolve_passthrough_value: under multiplex with no profile secret scope
installed the resolver raised UnscopedSecretError (fail-closed) at call
sites like the webhook-filter script runner, a regression where the
script previously ran without the var. The vars are the process's own
env values and are never scope-resolved.
- LocalEnvironment now excludes first-party terminal env names from the
shared login-shell snapshot (_additional_profile_scoped_passthrough_names
override): BUZZ_PRIVATE_KEY can never be in the get_all_passthrough()
exclusion set (env_passthrough refuses blocklisted names), so without
this a multiplexed gateway would dump profile A's key into
hermes-snap-<id>.sh and profile B sharing the collapsed LocalEnvironment
would source it — a cross-profile nsec leak. The names are now excluded
from the dump and save/restored per command.
- Docs now name the _sanitize_subprocess_env consumers (search workers
like ddgs, computer-use driver, user-script runners) that also receive
first-party platform vars.
Fixes#78026
Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>
Compose/fix-up on top of the cherry-picked cluster commits:
- Unify the config surface: platforms.buzz.reply_to_mode: off (PlatformConfig
field, as Discord/Telegram) and extra.reply_in_thread: false (the key Slack
users know; env BUZZ_REPLY_IN_THREAD) are equivalent opt-outs, bridged
through _apply_yaml_config and honored by send(), send_image(), and
_standalone_send (cron delivery).
- Progress/status bubbles honor the opt-out too: gateway/run.py resolves
_progress_reply_in_thread from the Buzz adapter (mirroring the Slack path)
so the synthetic-thread fallback and the progress reply anchor are both
suppressed when the user asked for flat replies (#75082, #95842).
- Deduplicate NIP-10 parsing: inbound session thread_id now reuses
_extract_thread_root (marked root > reply > legacy positional e-tag)
instead of a second inline root-marker-only scan.
- display_config: add buzz to _PLATFORM_DEFAULTS at TIER_MEDIUM — with
edit_message now implemented, accumulate-style progress works, but without
the entry Buzz inherited the verbose _GLOBAL_DEFAULTS and every interim
update became a permanent channel post (#95841).
- plugin.yaml optional_env + platform docs for the new keys.
- contributors/emails mappings for the cherry-picked authors.
Consolidates the native-transport half of PR #73636 by @ScaleLeanChris
onto the merged adapter: persistent NIP-42-authenticated Nostr WebSocket
subscription as the default inbound path (transport=auto|websocket|poll),
kind-44100 membership events for live DM discovery, since-timestamp
resume on reconnect with bounded exponential backoff, and automatic
fallback to CLI polling when the WS can't be established. Events route
through the same _handle_event() pipeline as the poll loop, so de-dupe,
mention gating, p-tag DM latching, and allow-lists behave identically on
both transports. Outbound stays on the CLI (one-shot sends never race a
WS auth handshake — his design).
E2E verified against a real in-process websockets relay: NIP-42
challenge -> signed kind-22242 AUTH (event id re-derived server-side) ->
REQ subscription -> EVENT dispatch -> clean disconnect.
Co-authored-by: ScaleLeanChris <chris@scalelean.com>
Expands the 'Recommended display settings' section into a comprehensive
'Recommended default settings' block covering display, access control,
polling, and mention behavior. Each setting includes an inline annotation
and rationale bullet. Matches Telegram/email default behavior (no
intermediate tool output, mention-gated channels, private-by-default
access).
Refs #68871
Plugin-path adapter (zero core changes) connecting Hermes to a Buzz
community relay via the buzz CLI binary (JSON in/out, arg-list exec,
key passed via env only). Inbound uses a poll loop with per-channel
high-water marks seeded from newest (no history replay), event-id
de-dupe, self-echo suppression by pubkey, and mention gating in
channels (DMs always dispatch). Registers env_enablement, cron
home-channel delivery, and an out-of-process standalone sender,
mirroring the IRC plugin.
Verified against a live relay: connect -> send -> poll -> MessageEvent
round-trip, self-echo suppressed, clean disconnect.
Known limitation: polled inbound (default 4s); a websocket transport
(buzz-ws-client) is a future optimization.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
EmpireOperating