Files
AstrBot/astrbot/core/tools/message_tools.py
NayukiMeko 8098a92f33 fix(#7907): send_message_to_user cron 场景下 session 容错 (#7911)
* fix: send_message_to_user cron 场景下 session 容错 (#7907)

- LLM 在主动场景可能只传 session_id 而非完整三段式,
from_str 失败时用 current_session 补全前两段。

Co-authored-by: Copilot <copilot@github.com>

* fix: 限制 session 补全仅对裸 session_id 生效,避免误修带冒号的错误输入 (#7907)

* feat: add session information to cron job payload

Co-authored-by: Copilot <copilot@github.com>

* fix: improve clarity and consistency of safety mode prompts

Co-authored-by: Copilot <copilot@github.com>

---------

Co-authored-by: Copilot <copilot@github.com>
Co-authored-by: Weilong Liao <37870767+Soulter@users.noreply.github.com>
Co-authored-by: Soulter <905617992@qq.com>
2026-05-03 14:37:37 +08:00

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import json
import os
import shlex
import uuid
from pydantic import Field
from pydantic.dataclasses import dataclass
import astrbot.core.message.components as Comp
from astrbot.api import logger
from astrbot.core.agent.run_context import ContextWrapper
from astrbot.core.agent.tool import FunctionTool, ToolExecResult
from astrbot.core.astr_agent_context import AstrAgentContext
from astrbot.core.computer.computer_client import get_booter
from astrbot.core.message.message_event_result import MessageChain
from astrbot.core.platform.message_session import MessageSession
from astrbot.core.tools.computer_tools.util import check_admin_permission
from astrbot.core.tools.registry import builtin_tool
from astrbot.core.utils.astrbot_path import get_astrbot_temp_path
@builtin_tool
@dataclass
class SendMessageToUserTool(FunctionTool[AstrAgentContext]):
name: str = "send_message_to_user"
description: str = (
"Send message to the user. "
"Supports various message types including `plain`, `image`, `record`, `video`, `file`, and `mention_user`. "
"Use this tool to send media files (`image`, `record`, `video`, `file`), "
"or when you need to proactively message the user(such as cron job). For normal text replies, you can output directly."
)
parameters: dict = Field(
default_factory=lambda: {
"type": "object",
"properties": {
"messages": {
"type": "array",
"description": "An ordered list of message components to send. `mention_user` type can be used to mention the user.",
"items": {
"type": "object",
"properties": {
"type": {
"type": "string",
"description": (
"Component type. One of: "
"plain, image, record, video, file, mention_user. Record is voice message."
),
},
"text": {
"type": "string",
"description": "Text content for `plain` type.",
},
"path": {
"type": "string",
"description": "File path for `image`, `record`, `video`, or `file` types. Both local path and sandbox path are supported.",
},
"url": {
"type": "string",
"description": "URL for `image`, `record`, `video`, or `file` types.",
},
"mention_user_id": {
"type": "string",
"description": "User ID to mention for `mention_user` type.",
},
},
"required": ["type"],
},
},
"session": {
"type": "string",
"description": (
"Optional. Leave empty for the current session. "
"Use 'platform_id:message_type:session_id' to target another session."
),
},
},
"required": ["messages"],
}
)
async def _resolve_path_from_sandbox(
self, context: ContextWrapper[AstrAgentContext], path: str
) -> tuple[str, bool]:
# if the path is relative, check if the file exists in user's local workspace
if not os.path.isabs(path):
unified_msg_origin = context.context.event.unified_msg_origin
if unified_msg_origin:
from astrbot.core.tools.computer_tools.util import workspace_root
try:
ws_path = workspace_root(unified_msg_origin)
ws_candidate = (ws_path / path).resolve()
if ws_candidate.is_file() and ws_candidate.is_relative_to(ws_path):
return str(ws_candidate), False
except Exception:
pass
# check if the file exists in local environment (only allow absolute paths to prevent traversal)
elif os.path.isfile(path):
return path, False
try:
sb = await get_booter(
context.context.context,
context.context.event.unified_msg_origin,
)
quoted_path = shlex.quote(path)
result = await sb.shell.exec(f"test -f {quoted_path} && echo '_&exists_'")
if "_&exists_" in json.dumps(result):
name = os.path.basename(path)
local_path = os.path.join(
get_astrbot_temp_path(), f"sandbox_{uuid.uuid4().hex[:4]}_{name}"
)
await sb.download_file(path, local_path)
logger.info(f"Downloaded file from sandbox: {path} -> {local_path}")
return local_path, True
except Exception as exc:
logger.warning(f"Failed to check/download file from sandbox: {exc}")
return path, False
async def call(
self, context: ContextWrapper[AstrAgentContext], **kwargs
) -> ToolExecResult:
# Security: only AstrBot admins can send messages to other sessions.
# Non-admin users are always restricted to their own session.
# See https://github.com/AstrBotDevs/AstrBot/issues/7822
current_session = context.context.event.unified_msg_origin
session = kwargs.get("session") or current_session
if session != current_session:
if permission_error := check_admin_permission(
context, "Send message to another session"
):
return permission_error
messages = kwargs.get("messages")
if not isinstance(messages, list) or not messages:
return "error: messages parameter is empty or invalid."
components: list[Comp.BaseMessageComponent] = []
for idx, msg in enumerate(messages):
if not isinstance(msg, dict):
return f"error: messages[{idx}] should be an object."
msg_type = str(msg.get("type", "")).lower()
if not msg_type:
return f"error: messages[{idx}].type is required."
try:
if msg_type == "plain":
text = str(msg.get("text", "")).strip()
if not text:
return f"error: messages[{idx}].text is required for plain component."
components.append(Comp.Plain(text=text))
elif msg_type == "image":
path = msg.get("path")
url = msg.get("url")
if path:
local_path, _ = await self._resolve_path_from_sandbox(
context, path
)
components.append(Comp.Image.fromFileSystem(path=local_path))
elif url:
components.append(Comp.Image.fromURL(url=url))
else:
return f"error: messages[{idx}] must include path or url for image component."
elif msg_type == "record":
path = msg.get("path")
url = msg.get("url")
if path:
local_path, _ = await self._resolve_path_from_sandbox(
context, path
)
components.append(Comp.Record.fromFileSystem(path=local_path))
elif url:
components.append(Comp.Record.fromURL(url=url))
else:
return f"error: messages[{idx}] must include path or url for record component."
elif msg_type == "video":
path = msg.get("path")
url = msg.get("url")
if path:
local_path, _ = await self._resolve_path_from_sandbox(
context, path
)
components.append(Comp.Video.fromFileSystem(path=local_path))
elif url:
components.append(Comp.Video.fromURL(url=url))
else:
return f"error: messages[{idx}] must include path or url for video component."
elif msg_type == "file":
path = msg.get("path")
url = msg.get("url")
name = (
msg.get("text")
or (os.path.basename(path) if path else "")
or (os.path.basename(url) if url else "")
or "file"
)
if path:
local_path, _ = await self._resolve_path_from_sandbox(
context, path
)
components.append(Comp.File(name=name, file=local_path))
elif url:
components.append(Comp.File(name=name, url=url))
else:
return f"error: messages[{idx}] must include path or url for file component."
elif msg_type == "mention_user":
mention_user_id = msg.get("mention_user_id")
if not mention_user_id:
return f"error: messages[{idx}].mention_user_id is required for mention_user component."
components.append(Comp.At(qq=mention_user_id))
else:
return (
f"error: unsupported message type '{msg_type}' at index {idx}."
)
except Exception as exc:
return f"error: failed to build messages[{idx}] component: {exc}"
try:
target_session = (
MessageSession.from_str(session)
if isinstance(session, str)
else session
)
except Exception:
# LLM 在 cron 等主动场景下可能只传 session_id如 oc_xxx
# 而不是完整的三段式 platform_id:message_type:session_id。
# 此时用 current_session 的前两段补全。
# 注意这里的session是传入的session参数实际上是用户输入的session_id
# current_session才是完整的三段式session字符串。
# 仅当传入字符串不含 ':'(明显是裸 session_id时才用 current_session 补全,
# 避免 LLM 传了带 ':' 但格式错误的目标 session 被错误修复。
# issue: https://github.com/AstrBotDevs/AstrBot/issues/7907
if isinstance(session, str) and current_session and ":" not in session:
try:
cur = MessageSession.from_str(current_session)
target_session = MessageSession(
platform_name=cur.platform_id,
message_type=cur.message_type,
session_id=session,
)
except Exception:
return f"error: invalid session: {session}"
else:
return f"error: invalid session: {session}"
await context.context.context.send_message(
target_session,
MessageChain(chain=components),
)
return f"Message sent to session {target_session}"
__all__ = [
"SendMessageToUserTool",
]