0xallam
5921fec16c
send_request was a thin wrapper over the Caido Replay API that the model
could replicate with a one-liner `curl` via exec_command. The sandbox's
HTTP_PROXY env captures all such traffic for free, so the tool was
adding bugs (duplicate dispatch, dropped responses) without adding
capability. Removed across factory, tools module, sandbox-importable
caido_api helper, TUI renderer, prompt template, skill doc, and public
docs. repeat_request stays — it operates on captured request IDs with
structured modifications, which curl can't replicate cleanly.
Three caido-sdk-client workarounds that were hitting us through both
send_request and repeat_request:
- replay_send_raw used to pass CreateReplaySessionFromRaw to
sessions.create(), which seeds a stored entry server-side, then
called send() — producing two history rows per call. Empty-create +
send produces one dispatched request.
- The same helper read result.entry.response_raw, an attribute that
doesn't exist on ReplayEntry, so response bytes were silently
dropped. Fixed to walk result.entry.response.raw with proper None
guards.
- get_request_with_client passed include_request_raw / include_response_raw
based on the requested part, but the SDK's generated pydantic models
declare raw as required even though the GraphQL fragment makes it
conditional via @include. Passing False crashed view_request with a
pydantic validation error. Always request both raw bodies; the caller
picks which to surface.
Also wrapped replay.send() in asyncio.wait_for(30s) so a stalled Caido
dispatch (notably loopback targets that don't route cleanly through the
sandbox proxy) fails fast with a model-readable error instead of
hanging the agent until the function_tool 120s budget expires.
Finally, list_requests now omits the roundtrip_ms field when Caido
reports 0 — proxy-captured unscoped traffic consistently reports 0
while scoped/replay traffic carries real measurements, so the absence
of the field is now informative ("Caido didn't measure this") rather
than misleading ("this request took 0ms").
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
533 lines
19 KiB
Python
533 lines
19 KiB
Python
"""Caido proxy tools — host-side ``@function_tool`` wrappers.
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The four tools delegate to :mod:`strix.tools.proxy.caido_api` for the actual
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caido-sdk-client work and add LLM-friendly JSON serialization + error
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wrapping on top. The delegated ``caido_api.py`` module is also copied into
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the sandbox image as the importable ``caido_api`` Python module.
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Tools: ``list_requests``, ``view_request``, ``repeat_request``,
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``scope_rules``. Arbitrary one-off requests should be made through
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``exec_command`` (e.g. ``curl``) — they're captured automatically via
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the sandbox's ``HTTP_PROXY`` env, so wrapping them in a Strix tool only
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adds an extra layer of indirection.
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"""
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from __future__ import annotations
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import dataclasses
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import json
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import logging
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import re
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from dataclasses import is_dataclass
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from datetime import datetime
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from typing import TYPE_CHECKING, Any, Literal
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from agents import RunContextWrapper, function_tool
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from strix.tools.proxy import caido_api
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logger = logging.getLogger(__name__)
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if TYPE_CHECKING:
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from caido_sdk_client import Client
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from strix.tools.proxy.caido_api import RequestPart, SortBy, SortOrder
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else:
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# Runtime import: ``function_tool`` resolves the annotations via
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# ``typing.get_type_hints`` so the Literal aliases must be reachable
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# in module globals at decoration time even though they're "only"
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# used in annotations.
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from strix.tools.proxy.caido_api import ( # noqa: TC001
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RequestPart,
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SortBy,
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SortOrder,
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)
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ScopeAction = Literal["get", "list", "create", "update", "delete"]
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def _ctx_client(ctx: RunContextWrapper) -> Client | None:
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inner = ctx.context if isinstance(ctx.context, dict) else {}
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return inner.get("caido_client")
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# Tool-output formatting. Caido SDK returns typed Python objects; function
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# tools need compact JSON-safe values for the model and TUI.
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def _to_tool_json(value: Any) -> Any:
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"""Recursively convert SDK dataclasses/Pydantic objects to tool JSON values."""
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if value is None or isinstance(value, str | int | float | bool):
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return value
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if isinstance(value, bytes):
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try:
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return value.decode("utf-8", errors="replace")
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except Exception: # noqa: BLE001
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return value.hex()
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if isinstance(value, datetime):
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return value.isoformat()
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if is_dataclass(value) and not isinstance(value, type):
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return {k: _to_tool_json(v) for k, v in dataclasses.asdict(value).items()}
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if hasattr(value, "model_dump"):
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return _to_tool_json(value.model_dump())
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if isinstance(value, dict):
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return {str(k): _to_tool_json(v) for k, v in value.items()}
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if isinstance(value, list | tuple | set):
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return [_to_tool_json(v) for v in value]
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return str(value)
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def _no_client() -> str:
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return json.dumps(
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{"success": False, "error": "Caido client not available in run context"},
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ensure_ascii=False,
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default=str,
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)
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def _err(name: str, exc: Exception) -> str:
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logger.exception("%s failed", name)
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return json.dumps(
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{"success": False, "error": f"{name} failed: {exc}"},
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ensure_ascii=False,
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default=str,
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)
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# ----------------------------------------------------------------------
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# list_requests
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# ----------------------------------------------------------------------
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@function_tool(timeout=120)
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async def list_requests(
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ctx: RunContextWrapper,
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httpql_filter: str | None = None,
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first: int = 50,
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after: str | None = None,
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sort_by: SortBy = "timestamp",
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sort_order: SortOrder = "desc",
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scope_id: str | None = None,
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) -> str:
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"""List captured HTTP requests from the Caido proxy with HTTPQL filtering.
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Caido HTTPQL syntax (operators differ by field type):
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- **Integer fields** (``resp.code``, ``req.port``, ``id``,
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``roundtrip``) — ``eq``, ``gt``, ``gte``, ``lt``, ``lte``, ``ne``.
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Examples: ``resp.code.eq:200``, ``resp.code.gte:400``,
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``req.port.eq:443``.
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- **Text/byte fields** (``req.method``, ``req.host``, ``req.path``,
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``req.query``, ``req.ext``, ``req.raw``) — ``regex``, ``cont``
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(substring), ``eq``. Examples: ``req.method.eq:"POST"``,
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``req.path.cont:"/api/"``, ``req.host.regex:".*\\.example\\.com"``.
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- **Date fields** (``req.created_at``) — ``gt``, ``lt`` with ISO
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timestamps: ``req.created_at.gt:"2024-01-01T00:00:00Z"``.
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- **Combine** with ``AND`` / ``OR``: ``req.method.eq:"POST" AND
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resp.code.gte:400``.
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- **Special**: ``source:intercept`` (only intercepted requests),
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``preset:"name"``.
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For sitemap-style tree traversal use HTTPQL filters: drill into a
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host with ``req.host.eq:"example.com"`` then narrow paths with
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``req.path.cont:"/api/"``.
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Pagination is cursor-based. Pass the ``end_cursor`` from the
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``page_info`` of one call as ``after`` to the next.
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Args:
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httpql_filter: Caido HTTPQL query (optional).
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first: Number of entries to return (default 50).
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after: Cursor from a previous response's ``page_info.end_cursor``.
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sort_by: One of ``timestamp`` / ``host`` / ``method`` / ``path``
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/ ``status_code`` / ``response_time`` / ``response_size``
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/ ``source``.
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sort_order: ``asc`` or ``desc``.
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scope_id: Restrict to a Caido scope (managed via ``scope_rules``).
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"""
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client = _ctx_client(ctx)
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if client is None:
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return _no_client()
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try:
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connection = await caido_api.list_requests_with_client(
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client,
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httpql_filter=httpql_filter,
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first=first,
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after=after,
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sort_by=sort_by,
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sort_order=sort_order,
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scope_id=scope_id,
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)
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entries = []
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for edge in connection.edges:
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req = edge.node.request
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resp = edge.node.response
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response_payload: dict[str, Any] | None = None
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if resp is not None:
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response_payload = {
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"id": resp.id,
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"status_code": resp.status_code,
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"length": resp.length,
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"created_at": resp.created_at.isoformat(),
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}
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# Caido populates ``roundtripTime`` for some traffic sources
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# and leaves it as ``0`` for others (notably proxy captures
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# of upstream env-routed traffic). Surface the value only
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# when it's actually measured so the model doesn't waste
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# tokens reading a zero field on every entry.
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if resp.roundtrip_time:
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response_payload["roundtrip_ms"] = resp.roundtrip_time
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entries.append(
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{
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"cursor": edge.cursor,
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"request": {
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"id": req.id,
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"host": req.host,
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"port": req.port,
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"method": req.method,
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"path": req.path,
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"query": req.query,
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"is_tls": req.is_tls,
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"created_at": req.created_at.isoformat(),
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},
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"response": response_payload,
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},
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)
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return json.dumps(
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{
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"success": True,
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"entries": entries,
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"page_info": {
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"has_next_page": connection.page_info.has_next_page,
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"has_previous_page": connection.page_info.has_previous_page,
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"start_cursor": connection.page_info.start_cursor,
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"end_cursor": connection.page_info.end_cursor,
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},
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},
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ensure_ascii=False,
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default=str,
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)
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except Exception as exc: # noqa: BLE001
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return _err("list_requests", exc)
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# ----------------------------------------------------------------------
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# view_request
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# ----------------------------------------------------------------------
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@function_tool(timeout=60)
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async def view_request(
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ctx: RunContextWrapper,
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request_id: str,
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part: RequestPart = "request",
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search_pattern: str | None = None,
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page: int = 1,
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page_size: int = 50,
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) -> str:
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"""View a captured request or its response, optionally regex-searched.
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Two modes:
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- **With** ``search_pattern`` (compact regex hits) — returns up to 20
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matches with ``before`` / ``after`` context and position. Useful
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for hunting reflected input, leaked URLs, hidden parameters.
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- **Without** ``search_pattern`` (full content with line pagination)
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— returns the page of raw content plus ``has_more`` flag.
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Common search patterns:
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- API endpoints: ``/api/[a-zA-Z0-9._/-]+``
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- URLs: ``https?://[^\\s<>"']+``
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- Query parameters: ``[?&][a-zA-Z0-9_]+=([^&\\s<>"']+)``
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- Specific input reflection: search for the value you submitted.
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Args:
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request_id: Request ID from ``list_requests``.
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part: ``"request"`` or ``"response"``.
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search_pattern: Optional regex; switches the response shape to
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compact hits.
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page: 1-indexed page number (only when no ``search_pattern``).
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page_size: Lines per page.
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"""
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client = _ctx_client(ctx)
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if client is None:
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return _no_client()
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try:
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result = await caido_api.get_request_with_client(client, request_id, part=part)
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if result is None:
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return json.dumps(
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{"success": False, "error": f"Request {request_id} not found"},
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ensure_ascii=False,
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default=str,
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)
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raw_bytes = (
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result.request.raw
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if part == "request"
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else (result.response.raw if result.response is not None else None)
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)
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if raw_bytes is None:
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return json.dumps(
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{
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"success": False,
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"error": f"No raw {part} for {request_id}",
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},
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ensure_ascii=False,
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default=str,
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)
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content = raw_bytes.decode("utf-8", errors="replace")
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if search_pattern:
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return json.dumps(
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_format_search_hits(content, search_pattern),
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ensure_ascii=False,
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default=str,
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)
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return json.dumps(
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_format_text_page(content, page=page, page_size=page_size),
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ensure_ascii=False,
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default=str,
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)
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except Exception as exc: # noqa: BLE001
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return _err("view_request", exc)
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def _format_search_hits(content: str, pattern: str) -> dict[str, Any]:
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try:
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regex = re.compile(pattern)
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except re.error as exc:
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return {"success": False, "error": f"Invalid regex: {exc}"}
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hits = []
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for match in regex.finditer(content):
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start, end = match.span()
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before = content[max(0, start - 40) : start]
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after = content[end : end + 40]
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hits.append(
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{
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"match": match.group(0),
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"position": start,
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"before": before,
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"after": after,
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},
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)
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if len(hits) >= 20:
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break
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return {"success": True, "hits": hits, "total_hits": len(hits)}
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def _format_text_page(content: str, *, page: int, page_size: int) -> dict[str, Any]:
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lines = content.splitlines()
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start = max(0, (page - 1) * page_size)
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end = start + page_size
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return {
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"success": True,
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"content": "\n".join(lines[start:end]),
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"page": page,
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"page_size": page_size,
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"total_lines": len(lines),
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"has_more": end < len(lines),
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}
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# ----------------------------------------------------------------------
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# repeat_request
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# ----------------------------------------------------------------------
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@function_tool(timeout=120, strict_mode=False)
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async def repeat_request(
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ctx: RunContextWrapper,
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request_id: str,
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modifications: dict[str, Any] | None = None,
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) -> str:
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"""Repeat a captured request, optionally patching individual fields.
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The standard pentesting workflow with this tool:
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1. ``agent-browser`` (via ``exec_command``) or live target traffic
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→ request gets captured by Caido.
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2. ``list_requests`` → find the request ID you want to manipulate.
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3. ``repeat_request`` → send a modified version (auth-bypass test,
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payload injection, parameter tampering).
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Mirrors the manual "browse → capture → modify → test" flow used in
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real pentesting. Inherits everything from the original request
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(headers, cookies, auth, method, URL) and overlays only the fields
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you specify in ``modifications``.
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Args:
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request_id: ID of the original request (from ``list_requests``).
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modifications: Patch dict. Recognized keys:
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- ``url`` — replace the URL.
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- ``params`` — dict of query-string keys to add/update.
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- ``headers`` — dict of headers to add/update.
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- ``body`` — replace the body string entirely.
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- ``cookies`` — dict of cookies to add/update.
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"""
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client = _ctx_client(ctx)
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if client is None:
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return _no_client()
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mods = modifications or {}
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try:
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result = await caido_api.get_request_with_client(client, request_id, part="request")
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if result is None or result.request.raw is None:
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return json.dumps(
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{"success": False, "error": f"Request {request_id} not found"},
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ensure_ascii=False,
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default=str,
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)
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original = result.request
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raw_str = result.request.raw.decode("utf-8", errors="replace")
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components = caido_api.parse_raw_request(raw_str)
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full_url = caido_api.full_url_from_components(original, components, mods)
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modified = caido_api.apply_modifications(components, mods, full_url)
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connection, raw = caido_api.build_raw_request(
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method=modified["method"],
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url=modified["url"],
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headers=modified["headers"],
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body=modified["body"],
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)
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replay = await caido_api.replay_send_raw(client, raw=raw, connection=connection)
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return _format_replay_tool_result(replay)
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except Exception as exc: # noqa: BLE001
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return _err("repeat_request", exc)
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|
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def _format_replay_tool_result(replay: dict[str, Any]) -> str:
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response_raw = replay.get("response_raw")
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response: dict[str, Any] | None = None
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if response_raw is not None:
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response = {"raw": response_raw.decode("utf-8", errors="replace")}
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return json.dumps(
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{
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"success": replay["status"] == "DONE",
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"status": replay["status"],
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"error": replay["error"],
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"session_id": replay["session_id"],
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"elapsed_ms": replay["elapsed_ms"],
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"response": response,
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},
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ensure_ascii=False,
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default=str,
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)
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|
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# ----------------------------------------------------------------------
|
|
# scope_rules
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# ----------------------------------------------------------------------
|
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@function_tool(timeout=60)
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async def scope_rules(
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ctx: RunContextWrapper,
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|
action: ScopeAction,
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|
allowlist: list[str] | None = None,
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|
denylist: list[str] | None = None,
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|
scope_id: str | None = None,
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|
scope_name: str | None = None,
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|
) -> str:
|
|
"""CRUD on Caido scope rules (allow/deny patterns).
|
|
|
|
Scopes filter which traffic Caido tools see. Use them to focus on a
|
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target, exclude noisy assets (CDNs, static files), or define a
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bug-bounty allowlist.
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|
|
Pattern semantics:
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|
|
|
- Glob wildcards: ``*`` (any), ``?`` (single), ``[abc]`` (one of),
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``[a-z]`` (range), ``[^abc]`` (none of).
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- **Empty allowlist = allow all domains.**
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|
- **Denylist always overrides allowlist.**
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|
|
Common denylist for noisy static assets:
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|
``["*.gif", "*.jpg", "*.png", "*.css", "*.js", "*.ico", "*.svg",
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|
"*woff*", "*.ttf"]``.
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|
|
Each scope has a unique id usable as ``scope_id`` in
|
|
``list_requests``.
|
|
|
|
Args:
|
|
action:
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|
|
|
- ``list`` — return all scopes.
|
|
- ``get`` — single scope by ``scope_id``.
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|
- ``create`` — needs ``scope_name``, optionally
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|
``allowlist`` / ``denylist``.
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|
- ``update`` — needs ``scope_id`` + ``scope_name``;
|
|
allowlist / denylist replace the previous values.
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|
- ``delete`` — needs ``scope_id``.
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|
|
allowlist: Domain patterns to include (e.g.
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|
``["*.example.com", "api.test.com"]``).
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|
denylist: Patterns to exclude.
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|
scope_id: Required for ``get`` / ``update`` / ``delete``.
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|
scope_name: Required for ``create`` / ``update``.
|
|
"""
|
|
client = _ctx_client(ctx)
|
|
if client is None:
|
|
return _no_client()
|
|
|
|
try:
|
|
if action == "list":
|
|
scopes = await caido_api.scope_list(client)
|
|
return json.dumps(
|
|
{"success": True, "scopes": [_to_tool_json(s) for s in scopes]},
|
|
ensure_ascii=False,
|
|
default=str,
|
|
)
|
|
if action == "get":
|
|
if not scope_id:
|
|
return json.dumps(
|
|
{"success": False, "error": "scope_id required for get"},
|
|
ensure_ascii=False,
|
|
default=str,
|
|
)
|
|
scope = await caido_api.scope_get(client, scope_id)
|
|
return json.dumps(
|
|
{"success": True, "scope": _to_tool_json(scope)}, ensure_ascii=False, default=str
|
|
)
|
|
if action == "create":
|
|
if not scope_name:
|
|
return json.dumps(
|
|
{"success": False, "error": "scope_name required for create"},
|
|
ensure_ascii=False,
|
|
default=str,
|
|
)
|
|
scope = await caido_api.scope_create(
|
|
client, name=scope_name, allowlist=allowlist, denylist=denylist
|
|
)
|
|
return json.dumps(
|
|
{"success": True, "scope": _to_tool_json(scope)}, ensure_ascii=False, default=str
|
|
)
|
|
if action == "update":
|
|
if not scope_id or not scope_name:
|
|
return json.dumps(
|
|
{
|
|
"success": False,
|
|
"error": "scope_id and scope_name required for update",
|
|
},
|
|
ensure_ascii=False,
|
|
default=str,
|
|
)
|
|
scope = await caido_api.scope_update(
|
|
client, scope_id, name=scope_name, allowlist=allowlist, denylist=denylist
|
|
)
|
|
return json.dumps(
|
|
{"success": True, "scope": _to_tool_json(scope)}, ensure_ascii=False, default=str
|
|
)
|
|
# action == "delete" — exhaustive Literal
|
|
if not scope_id:
|
|
return json.dumps(
|
|
{"success": False, "error": "scope_id required for delete"},
|
|
ensure_ascii=False,
|
|
default=str,
|
|
)
|
|
await caido_api.scope_delete(client, scope_id)
|
|
return json.dumps({"success": True, "deleted": scope_id}, ensure_ascii=False, default=str)
|
|
except Exception as exc: # noqa: BLE001
|
|
return _err("scope_rules", exc)
|