mirror of
https://github.com/DrizzleTime/Foxel.git
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244 lines
10 KiB
Python
244 lines
10 KiB
Python
from __future__ import annotations
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from typing import List, Dict, Tuple, AsyncIterator
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from models import StorageAdapter
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from telethon import TelegramClient
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from telethon.sessions import StringSession
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import socks
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# 适配器类型标识
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ADAPTER_TYPE = "Telegram"
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# 适配器配置项定义
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CONFIG_SCHEMA = [
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{"key": "api_id", "label": "API ID", "type": "string", "required": True, "help_text": "从 my.telegram.org 获取"},
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{"key": "api_hash", "label": "API Hash", "type": "password", "required": True, "help_text": "从 my.telegram.org 获取"},
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{"key": "session_string", "label": "Session String", "type": "password", "required": True, "help_text": "通过 generate_session.py 生成"},
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{"key": "chat_id", "label": "Chat ID", "type": "string", "required": True, "placeholder": "频道/群组的ID或用户名, 例如: -100123456789 或 'channel_username'"},
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{"key": "proxy_protocol", "label": "代理协议", "type": "string", "required": False, "placeholder": "例如: socks5, http"},
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{"key": "proxy_host", "label": "代理主机", "type": "string", "required": False, "placeholder": "例如: 127.0.0.1"},
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{"key": "proxy_port", "label": "代理端口", "type": "number", "required": False, "placeholder": "例如: 1080"},
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]
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class TelegramAdapter:
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"""Telegram 存储适配器 (只读, 使用用户 Session)"""
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def __init__(self, record: StorageAdapter):
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self.record = record
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cfg = record.config
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self.api_id = int(cfg.get("api_id"))
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self.api_hash = cfg.get("api_hash")
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self.session_string = cfg.get("session_string")
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self.chat_id_str = cfg.get("chat_id")
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# 代理设置
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self.proxy_protocol = cfg.get("proxy_protocol")
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self.proxy_host = cfg.get("proxy_host")
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self.proxy_port = cfg.get("proxy_port")
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self.proxy = None
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if self.proxy_protocol and self.proxy_host and self.proxy_port:
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proto_map = {
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"socks5": socks.SOCKS5,
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"http": socks.HTTP,
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}
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proxy_type = proto_map.get(self.proxy_protocol.lower())
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if proxy_type:
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self.proxy = (proxy_type, self.proxy_host, int(self.proxy_port))
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try:
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self.chat_id = int(self.chat_id_str)
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except (ValueError, TypeError):
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self.chat_id = self.chat_id_str
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if not all([self.api_id, self.api_hash, self.session_string, self.chat_id]):
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raise ValueError("Telegram 适配器需要 api_id, api_hash, session_string 和 chat_id")
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def _get_client(self) -> TelegramClient:
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"""创建一个新的 TelegramClient 实例"""
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return TelegramClient(StringSession(self.session_string), self.api_id, self.api_hash, proxy=self.proxy)
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def get_effective_root(self, sub_path: str | None) -> str:
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return ""
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async def list_dir(self, root: str, rel: str, page_num: int = 1, page_size: int = 50) -> Tuple[List[Dict], int]:
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if rel:
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return [], 0
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client = self._get_client()
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entries = []
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try:
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await client.connect()
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messages = await client.get_messages(self.chat_id, limit=50)
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for message in messages:
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if message and (message.document or message.video):
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media = message.document or message.video
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filename = None
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if hasattr(media, 'attributes'):
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for attr in media.attributes:
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if hasattr(attr, 'file_name') and attr.file_name:
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filename = attr.file_name
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break
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if not filename:
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if message.text and '.' in message.text:
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if len(message.text) < 256 and '\n' not in message.text:
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filename = message.text
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if not filename:
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filename = "Unknown"
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entries.append({
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"name": f"{message.id}_{filename}",
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"is_dir": False,
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"size": media.size,
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"mtime": int(message.date.timestamp()),
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"type": "file",
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})
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finally:
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if client.is_connected():
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await client.disconnect()
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return entries, len(entries)
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async def read_file(self, root: str, rel: str) -> bytes:
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try:
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message_id_str, _ = rel.split('_', 1)
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message_id = int(message_id_str)
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except (ValueError, IndexError):
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raise FileNotFoundError(f"无效的文件路径格式: {rel}")
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client = self._get_client()
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try:
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await client.connect()
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message = await client.get_messages(self.chat_id, ids=message_id)
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if not message or not (message.document or message.video):
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raise FileNotFoundError(f"在频道 {self.chat_id} 中未找到消息ID为 {message_id} 的文件")
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file_bytes = await client.download_media(message, file=bytes)
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return file_bytes
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finally:
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if client.is_connected():
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await client.disconnect()
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async def write_file(self, root: str, rel: str, data: bytes):
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raise NotImplementedError("Telegram 适配器是只读的，不支持写入文件。")
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async def write_file_stream(self, root: str, rel: str, data_iter: AsyncIterator[bytes]):
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raise NotImplementedError("Telegram 适配器是只读的，不支持流式写入文件。")
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async def mkdir(self, root: str, rel: str):
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raise NotImplementedError("Telegram 适配器是只读的，不支持创建目录。")
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async def delete(self, root: str, rel: str):
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raise NotImplementedError("Telegram 适配器是只读的，不支持删除。")
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async def move(self, root: str, src_rel: str, dst_rel: str):
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raise NotImplementedError("Telegram 适配器是只读的，不支持移动。")
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async def rename(self, root: str, src_rel: str, dst_rel: str):
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raise NotImplementedError("Telegram 适配器是只读的，不支持重命名。")
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async def copy(self, root: str, src_rel: str, dst_rel: str, overwrite: bool = False):
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raise NotImplementedError("Telegram 适配器是只读的，不支持复制。")
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async def stream_file(self, root: str, rel: str, range_header: str | None):
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from fastapi.responses import StreamingResponse
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from fastapi import HTTPException
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try:
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message_id_str, _ = rel.split('_', 1)
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message_id = int(message_id_str)
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except (ValueError, IndexError):
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raise HTTPException(status_code=400, detail=f"无效的文件路径格式: {rel}")
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client = self._get_client()
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try:
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await client.connect()
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message = await client.get_messages(self.chat_id, ids=message_id)
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if not message or not (message.document or message.video):
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raise FileNotFoundError(f"在频道 {self.chat_id} 中未找到消息ID为 {message_id} 的文件")
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media = message.document or message.video
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file_size = media.size
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start = 0
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end = file_size - 1
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status = 200
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headers = {
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"Accept-Ranges": "bytes",
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"Content-Type": media.mime_type or "application/octet-stream",
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"Content-Length": str(file_size),
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}
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if range_header:
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try:
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range_val = range_header.strip().partition("=")[2]
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s, _, e = range_val.partition("-")
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start = int(s) if s else 0
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end = int(e) if e else file_size - 1
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if start >= file_size or end >= file_size or start > end:
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raise HTTPException(status_code=416, detail="Requested Range Not Satisfiable")
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status = 206
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headers["Content-Length"] = str(end - start + 1)
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headers["Content-Range"] = f"bytes {start}-{end}/{file_size}"
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except ValueError:
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raise HTTPException(status_code=400, detail="Invalid Range header")
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async def iterator():
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try:
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limit = end - start + 1
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downloaded = 0
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async for chunk in client.iter_download(media, offset=start):
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if downloaded + len(chunk) > limit:
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yield chunk[:limit - downloaded]
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break
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yield chunk
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downloaded += len(chunk)
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if downloaded >= limit:
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break
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finally:
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if client.is_connected():
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await client.disconnect()
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return StreamingResponse(iterator(), status_code=status, headers=headers)
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except FileNotFoundError as e:
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if client.is_connected():
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await client.disconnect()
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raise HTTPException(status_code=404, detail=str(e))
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except Exception as e:
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if client.is_connected():
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await client.disconnect()
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raise HTTPException(status_code=500, detail=f"Streaming failed: {str(e)}")
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async def stat_file(self, root: str, rel: str):
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try:
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message_id_str, filename = rel.split('_', 1)
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message_id = int(message_id_str)
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except (ValueError, IndexError):
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raise FileNotFoundError(f"无效的文件路径格式: {rel}")
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client = self._get_client()
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try:
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await client.connect()
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message = await client.get_messages(self.chat_id, ids=message_id)
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if not message or not (message.document or message.video):
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raise FileNotFoundError(f"在频道 {self.chat_id} 中未找到消息ID为 {message_id} 的文件")
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media = message.document or message.video
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return {
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"name": rel,
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"is_dir": False,
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"size": media.size,
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"mtime": int(message.date.timestamp()),
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"type": "file",
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}
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finally:
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if client.is_connected():
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await client.disconnect()
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def ADAPTER_FACTORY(rec: StorageAdapter) -> TelegramAdapter:
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return TelegramAdapter(rec) |