mirror of
https://github.com/fromchat-messenger/web.git
synced 2026-09-22 19:15:08 +03:00
702 lines
27 KiB
Python
702 lines
27 KiB
Python
from datetime import datetime
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import logging
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from pathlib import Path
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import os
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import re
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import uuid
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from fastapi import APIRouter, Depends, HTTPException, WebSocket, WebSocketDisconnect, UploadFile, File, Form
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from fastapi.responses import FileResponse
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from fastapi.security import HTTPAuthorizationCredentials
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from sqlalchemy.orm import Session
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from dependencies import get_current_user, get_db
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from constants import OWNER_USERNAME
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from models import Message, SendMessageRequest, EditMessageRequest, User, DMEnvelope, MessageFile, DMFile
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from push_service import push_service
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from PIL import Image
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import io
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import json
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router = APIRouter()
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logger = logging.getLogger("uvicorn.error")
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MAX_TOTAL_SIZE = 4 * 1024 * 1024 * 1024 # 4 GB
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FILES_BASE_DIR = Path("data/uploads/files")
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FILES_NORMAL_DIR = FILES_BASE_DIR / "normal"
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FILES_ENCRYPTED_DIR = FILES_BASE_DIR / "encrypted"
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os.makedirs(FILES_NORMAL_DIR, exist_ok=True)
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os.makedirs(FILES_ENCRYPTED_DIR, exist_ok=True)
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def convert_message(msg: Message) -> dict:
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return {
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"id": msg.id,
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"content": msg.content,
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"timestamp": msg.timestamp.isoformat(),
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"is_read": msg.is_read,
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"is_edited": msg.is_edited,
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"username": msg.author.username,
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"profile_picture": msg.author.profile_picture,
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"reply_to": convert_message(msg.reply_to) if msg.reply_to else None,
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"files": [
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{
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"path": f"/api/files/{'encrypted' if f.encrypted else 'normal'}/{Path(f.path).name}",
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"encrypted": f.encrypted,
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"filename": f.filename,
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"content_type": f.content_type,
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"size": f.size,
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}
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for f in (msg.files or [])
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]
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}
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@router.post("/send_message")
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async def send_message(
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request: SendMessageRequest | None = None,
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current_user: User = Depends(get_current_user),
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db: Session = Depends(get_db),
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# Optional multipart form support
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payload: str | None = Form(default=None),
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files: list[UploadFile] = File(default=[]),
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):
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# If payload is provided, prefer it for multipart requests
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if payload and request is None:
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# Expect JSON: {"type":"text","data":{"content": str}, "reply_to_id": number|null}
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try:
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obj = json.loads(payload)
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content = obj.get("data", {}).get("content", "")
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reply_to_id = obj.get("reply_to_id", None)
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request = SendMessageRequest(content=content, reply_to_id=reply_to_id)
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except Exception:
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raise HTTPException(status_code=400, detail="Invalid payload JSON")
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if request.reply_to_id:
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# Check if the message being replied to exists
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original_message = db.query(Message).filter(Message.id == request.reply_to_id).first()
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if not original_message:
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raise HTTPException(status_code=404, detail="Original message not found")
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if not request.content.strip():
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raise HTTPException(
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status_code=400,
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detail="No content provided"
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)
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if len(request.content.strip()) > 4096:
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raise HTTPException(
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status_code=400,
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detail="Message too long"
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)
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new_message = Message(
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content=request.content.strip(),
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user_id=current_user.id,
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reply_to_id=request.reply_to_id,
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timestamp=datetime.now()
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)
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db.add(new_message)
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db.commit()
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db.refresh(new_message)
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# Handle files if provided (normal, not encrypted)
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if files:
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total_size = 0
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for up in files:
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# Accumulate size if available
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if hasattr(up, "size") and up.size is not None:
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total_size += int(up.size)
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else:
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# If size unknown, read into memory to determine
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data = await up.read()
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up.file.seek(0)
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total_size += len(data)
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if total_size > MAX_TOTAL_SIZE:
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raise HTTPException(status_code=400, detail="Total attachments size exceeds 4GB")
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for up in files:
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# Sanitize filename
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original_name = Path(up.filename or "file").name
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ext = Path(original_name).suffix.lower()
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uid = uuid.uuid4().hex
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safe_name = f"{new_message.id}_{uid}{ext or ''}"
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out_path = FILES_NORMAL_DIR / safe_name
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content = await up.read()
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up.file.seek(0)
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# If image, try lossless optimization
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try:
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if up.content_type and up.content_type.startswith("image/"):
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image = Image.open(io.BytesIO(content))
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img_format = image.format or ("PNG" if ext == ".png" else "JPEG")
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buf = io.BytesIO()
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save_kwargs = {"optimize": True}
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if img_format.upper() == "JPEG":
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# Use quality=95 with optimize to keep high quality (not truly lossless but near)
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save_kwargs["quality"] = 95
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image.save(buf, format=img_format, **save_kwargs)
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buf.seek(0)
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content = buf.read()
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except Exception:
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# Fallback to original content
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pass
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with open(out_path, "wb") as f:
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f.write(content)
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mf = MessageFile(
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message_id=new_message.id,
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path=str(out_path)
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)
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db.add(mf)
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db.commit()
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db.refresh(new_message)
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# Send push notifications for public messages
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try:
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await push_service.send_public_message_notification(db, new_message, exclude_user_id=current_user.id)
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except Exception as e:
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logger.error(f"Failed to send push notification for message {new_message.id}: {e}")
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# Realtime broadcast for HTTP uploads as well
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try:
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from .messaging import messagingManager # self import safe here
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await messagingManager.broadcast({
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"type": "newMessage",
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"data": convert_message(new_message)
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})
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except Exception:
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pass
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return {"status": "success", "message": convert_message(new_message)}
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@router.get("/get_messages")
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async def get_messages(db: Session = Depends(get_db)):
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messages = db.query(Message).order_by(Message.timestamp.asc()).all()
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messages_data = []
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for msg in messages:
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messages_data.append(convert_message(msg))
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return {
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"status": "success",
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"messages": messages_data
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}
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@router.post("/dm/send")
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async def dm_send(
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payload: dict | None = None,
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current_user: User = Depends(get_current_user),
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db: Session = Depends(get_db),
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# Multipart support
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dm_payload: str | None = Form(default=None),
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files: list[UploadFile] = File(default=[]),
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fileNames: str | None = Form(default=None), # JSON array of filenames corresponding to files
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):
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if dm_payload and payload is None:
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try:
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payload = json.loads(dm_payload)
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except Exception:
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raise HTTPException(status_code=400, detail="Invalid dm_payload JSON")
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if payload is None:
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raise HTTPException(status_code=400, detail="Missing payload")
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required = ["recipientId", "iv", "ciphertext", "salt", "iv2", "wrappedMk"]
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for key in required:
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if key not in payload:
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raise HTTPException(status_code=400, detail=f"Missing {key}")
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env = DMEnvelope(
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sender_id=current_user.id,
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recipient_id=int(payload["recipientId"]),
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iv_b64=payload["iv"],
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ciphertext_b64=payload["ciphertext"],
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salt_b64=payload["salt"],
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iv2_b64=payload["iv2"],
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wrapped_mk_b64=payload["wrappedMk"],
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reply_to_id=payload.get("replyToId") if isinstance(payload.get("replyToId"), int) else None,
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)
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db.add(env)
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db.commit()
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db.refresh(env)
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# Save encrypted files if any (no processing)
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if files:
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# Validate total size
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total_size = 0
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for file in files:
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if hasattr(file, "size") and file.size is not None:
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total_size += int(file.size)
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else:
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data = await file.read()
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file.file.seek(0)
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total_size += len(data)
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if total_size > MAX_TOTAL_SIZE:
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raise HTTPException(status_code=400, detail="Total attachments size exceeds 4GB")
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names: list[str] = []
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if fileNames:
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try:
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decoded = json.loads(fileNames)
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if isinstance(decoded, list):
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names = [str(x) for x in decoded]
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except Exception:
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names = []
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for i, file in enumerate(files):
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provided = names[i] if i < len(names) else None
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# Sanitize provided name to avoid path traversal
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if provided and not re.match(r"^[A-Za-z0-9._-]{1,200}$", provided):
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provided = None
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original_name = provided or Path(file.filename or "file").name
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# Save using provided/original name to allow client to reference path directly
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safe_name = original_name
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out_name = f"{current_user.id}_{env.recipient_id}_{env.id}_{safe_name}"
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out_path = FILES_ENCRYPTED_DIR / out_name
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content = await file.read()
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with open(out_path, "wb") as f:
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f.write(content)
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# Save DM file record
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df = DMFile(
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message_id=env.id,
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sender_id=current_user.id,
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recipient_id=env.recipient_id,
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path=f"/api/uploads/files/encrypted/{out_name}",
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name=safe_name
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)
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db.add(df)
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db.commit()
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# Send push notification for DM
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try:
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await push_service.send_dm_notification(db, env, current_user)
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except Exception as e:
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logger.error(f"Failed to send push notification for DM {env.id}: {e}")
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# Realtime notify both users for HTTP requests
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try:
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payload_ws = {
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"type": "dmNew",
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"data": {
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"id": env.id,
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"senderId": env.sender_id,
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"recipientId": env.recipient_id,
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"iv": env.iv_b64,
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"ciphertext": env.ciphertext_b64,
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"salt": env.salt_b64,
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"iv2": env.iv2_b64,
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"wrappedMk": env.wrapped_mk_b64,
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"timestamp": env.timestamp.isoformat(),
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"replyToId": env.reply_to_id,
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}
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}
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await messagingManager.send_to_user(env.recipient_id, payload_ws)
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await messagingManager.send_to_user(env.sender_id, payload_ws)
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except Exception:
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pass
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return {"status": "ok", "id": env.id}
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def convert_envelopes(envs: list[DMEnvelope]):
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return {
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"status": "ok",
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"messages": [
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{
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"id": e.id,
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"senderId": e.sender_id,
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"recipientId": e.recipient_id,
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"iv": e.iv_b64,
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"ciphertext": e.ciphertext_b64,
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"salt": e.salt_b64,
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"iv2": e.iv2_b64,
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"wrappedMk": e.wrapped_mk_b64,
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"timestamp": e.timestamp.isoformat(),
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"files": [{"name": file.name, "path": file.path, "id": file.id} for file in e.files]
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}
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for e in envs
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]
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}
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@router.get("/dm/fetch")
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async def dm_fetch(since: int | None = None, current_user: User = Depends(get_current_user), db: Session = Depends(get_db)):
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q = db.query(DMEnvelope).filter(DMEnvelope.recipient_id == current_user.id)
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if since:
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q = q.filter(DMEnvelope.id > since)
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return convert_envelopes(q.order_by(DMEnvelope.id.asc()).all())
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@router.get("/dm/history/{other_user_id}")
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async def dm_history(other_user_id: int, current_user: User = Depends(get_current_user), db: Session = Depends(get_db)):
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return convert_envelopes(
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db.query(DMEnvelope)
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.filter(
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((DMEnvelope.sender_id == current_user.id) & (DMEnvelope.recipient_id == other_user_id))
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| ((DMEnvelope.sender_id == other_user_id) & (DMEnvelope.recipient_id == current_user.id))
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)
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.order_by(DMEnvelope.id.asc())
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.all()
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)
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@router.put("/edit_message/{message_id}")
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async def edit_message(
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message_id: int,
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request: EditMessageRequest,
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current_user: User = Depends(get_current_user),
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db: Session = Depends(get_db)
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):
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message = db.query(Message).filter(Message.id == message_id).first()
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if not message:
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raise HTTPException(status_code=404, detail="Message not found")
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if message.user_id != current_user.id:
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raise HTTPException(status_code=403, detail="You can only edit your own messages")
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if not request.content.strip():
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raise HTTPException(status_code=400, detail="Message content cannot be empty")
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message.content = request.content.strip()
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message.is_edited = True
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db.commit()
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db.refresh(message)
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return {"status": "success", "message": convert_message(message)}
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@router.delete("/delete_message/{message_id}")
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async def delete_message(
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message_id: int,
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current_user: User = Depends(get_current_user),
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db: Session = Depends(get_db)
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):
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message = db.query(Message).filter(Message.id == message_id).first()
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if not message:
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raise HTTPException(status_code=404, detail="Message not found")
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# Allow owner to delete any message
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if current_user.username != OWNER_USERNAME and message.user_id != current_user.id:
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raise HTTPException(status_code=403, detail="You can only delete your own messages")
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db.delete(message)
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db.commit()
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return {"status": "success", "message_id": message_id}
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class MessaggingSocketManager:
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def __init__(self) -> None:
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self.connections: list[WebSocket] = []
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self.user_by_ws: dict[WebSocket, int] = {}
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async def send_error(self, websocket: WebSocket, type: str, e: HTTPException):
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await websocket.send_json({"type": type, "error": {"code": e.status_code, "detail": e.detail}})
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async def handle_connection(self, websocket: WebSocket, db: Session):
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while True:
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data = await websocket.receive_json()
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type = data["type"]
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def get_current_user_inner() -> User | None:
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if data["credentials"]:
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return get_current_user(
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HTTPAuthorizationCredentials(
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scheme=data["credentials"]["scheme"],
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credentials=data["credentials"]["credentials"]
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),
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db
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)
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else:
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return None
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if type == "ping":
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try:
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current_user = get_current_user_inner()
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if current_user:
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self.user_by_ws[websocket] = current_user.id
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else:
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await websocket.send_json({
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"type": "ping",
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"data": {
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"status": "error",
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"error": {
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"detail": "Failed to authorize",
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"code": 401
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}
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}
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})
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except HTTPException:
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await websocket.send_json({
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"type": "ping",
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"data": {
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"status": "error",
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"error": {
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"detail": "Failed to authorize",
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"code": 401
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}
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}
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})
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await websocket.send_json({"type": "ping", "data": {"status": "success"}})
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elif type == "getMessages":
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try:
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current_user = get_current_user_inner()
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if not current_user:
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raise HTTPException(401)
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self.user_by_ws[websocket] = current_user.id
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await websocket.send_json({"type": type, "data": await get_messages(current_user, db)})
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except HTTPException as e:
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await self.send_error(websocket, type, e)
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elif type == "sendMessage":
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try:
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current_user = get_current_user_inner()
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if not current_user:
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raise HTTPException(401)
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self.user_by_ws[websocket] = current_user.id
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request: SendMessageRequest = SendMessageRequest.model_validate(data["data"])
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response = await send_message(request, current_user, db, None, [])
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await self.broadcast({
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"type": "newMessage",
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"data": response["message"]
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})
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await websocket.send_json({"type": type, "data": response})
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except HTTPException as e:
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await self.send_error(websocket, type, e)
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elif type == "dmSend":
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try:
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current_user = get_current_user_inner()
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if not current_user:
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raise HTTPException(401)
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self.user_by_ws[websocket] = current_user.id
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payload = data["data"]
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required = ["recipientId", "iv", "ciphertext", "salt", "iv2", "wrappedMk"]
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for key in required:
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if key not in payload:
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raise HTTPException(status_code=400, detail=f"Missing {key}")
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env = DMEnvelope(
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sender_id=current_user.id,
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recipient_id=int(payload["recipientId"]),
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iv_b64=payload["iv"],
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ciphertext_b64=payload["ciphertext"],
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salt_b64=payload["salt"],
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iv2_b64=payload["iv2"],
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wrapped_mk_b64=payload["wrappedMk"],
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reply_to_id=payload.get("replyToId") if isinstance(payload.get("replyToId"), int) else None,
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)
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db.add(env)
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db.commit()
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db.refresh(env)
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payload = {
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"type": "dmNew",
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"data": {
|
|
"id": env.id,
|
|
"senderId": env.sender_id,
|
|
"recipientId": env.recipient_id,
|
|
"iv": env.iv_b64,
|
|
"ciphertext": env.ciphertext_b64,
|
|
"salt": env.salt_b64,
|
|
"iv2": env.iv2_b64,
|
|
"wrappedMk": env.wrapped_mk_b64,
|
|
"timestamp": env.timestamp.isoformat(),
|
|
"replyToId": env.reply_to_id,
|
|
}
|
|
}
|
|
|
|
# Send push notification for DM
|
|
try:
|
|
await push_service.send_dm_notification(db, env, current_user)
|
|
except Exception as e:
|
|
logger.error(f"Failed to send push notification for DM {env.id}: {e}")
|
|
|
|
await self.send_to_user(env.recipient_id, payload);
|
|
await websocket.send_json({"type": type, "data": {"status": "ok", "id": env.id}});
|
|
await self.send_to_user(env.sender_id, payload);
|
|
except HTTPException as e:
|
|
await self.send_error(websocket, type, e)
|
|
elif type == "editMessage":
|
|
try:
|
|
current_user = get_current_user_inner()
|
|
if not current_user:
|
|
raise HTTPException(401)
|
|
|
|
message_id = data["data"]["message_id"]
|
|
request: EditMessageRequest = EditMessageRequest.model_validate(data["data"])
|
|
|
|
response = await edit_message(message_id, request, current_user, db)
|
|
await self.broadcast({
|
|
"type": "messageEdited",
|
|
"data": response["message"]
|
|
})
|
|
|
|
await websocket.send_json({"type": type, "data": response})
|
|
except HTTPException as e:
|
|
await self.send_error(websocket, type, e)
|
|
elif type == "dmEdit":
|
|
try:
|
|
current_user = get_current_user_inner()
|
|
if not current_user:
|
|
raise HTTPException(401)
|
|
|
|
payload = data["data"]
|
|
env_id = int(payload["id"])
|
|
env: DMEnvelope | None = db.query(DMEnvelope).filter(DMEnvelope.id == env_id).first()
|
|
if not env:
|
|
raise HTTPException(status_code=404, detail="DM not found")
|
|
if env.sender_id != current_user.id:
|
|
raise HTTPException(status_code=403, detail="You can only edit your own messages")
|
|
|
|
# Replace ciphertext and iv
|
|
env.iv_b64 = payload["iv"]
|
|
env.ciphertext_b64 = payload["ciphertext"]
|
|
env.iv2_b64 = payload["iv2"]
|
|
env.wrapped_mk_b64 = payload["wrappedMk"]
|
|
env.salt_b64 = payload["salt"]
|
|
db.commit()
|
|
db.refresh(env)
|
|
|
|
payload_ws = {
|
|
"type": "dmEdited",
|
|
"data": {
|
|
"id": env.id,
|
|
"iv": env.iv_b64,
|
|
"ciphertext": env.ciphertext_b64,
|
|
"iv2": env.iv2_b64,
|
|
"wrappedMk": env.wrapped_mk_b64,
|
|
"salt": env.salt_b64,
|
|
"timestamp": env.timestamp.isoformat(),
|
|
}
|
|
}
|
|
await self.send_to_user(env.recipient_id, payload_ws)
|
|
await self.send_to_user(env.sender_id, payload_ws)
|
|
await websocket.send_json({"type": type, "data": {"status": "ok", "id": env.id}})
|
|
except HTTPException as e:
|
|
await self.send_error(websocket, type, e)
|
|
elif type == "dmDelete":
|
|
try:
|
|
current_user = get_current_user_inner()
|
|
if not current_user:
|
|
raise HTTPException(401)
|
|
|
|
payload = data["data"]
|
|
env_id = int(payload["id"])
|
|
env: DMEnvelope | None = db.query(DMEnvelope).filter(DMEnvelope.id == env_id).first()
|
|
if not env:
|
|
raise HTTPException(status_code=404, detail="DM not found")
|
|
if env.sender_id != current_user.id:
|
|
raise HTTPException(status_code=403, detail="You can only delete your own messages")
|
|
|
|
db.delete(env)
|
|
db.commit()
|
|
|
|
payload_ws = {
|
|
"type": "dmDeleted",
|
|
"data": {
|
|
"id": env_id,
|
|
"senderId": current_user.id,
|
|
"recipientId": payload.get("recipientId")
|
|
}
|
|
}
|
|
await self.send_to_user(env.recipient_id, payload_ws)
|
|
await websocket.send_json({"type": type, "data": {"status": "ok", "id": env_id}})
|
|
await self.send_to_user(env.sender_id, payload_ws)
|
|
except HTTPException as e:
|
|
await self.send_error(websocket, type, e)
|
|
elif type == "deleteMessage":
|
|
try:
|
|
current_user = get_current_user_inner()
|
|
if not current_user:
|
|
raise HTTPException(401)
|
|
|
|
message_id = data["data"]["message_id"]
|
|
response = await delete_message(message_id, current_user, db)
|
|
await self.broadcast({
|
|
"type": "messageDeleted",
|
|
"data": {"message_id": message_id}
|
|
})
|
|
|
|
await websocket.send_json({"type": type, "data": response})
|
|
except HTTPException as e:
|
|
await self.send_error(websocket, type, e)
|
|
else:
|
|
await websocket.send_json({"type": type, "error": {"code": 400, "detail": "Invalid type"}})
|
|
|
|
async def disconnect(self, websocket: WebSocket, code: int = 1000, message: str | None = None):
|
|
try:
|
|
await websocket.close(code=code, reason=message)
|
|
finally:
|
|
self.connections.remove(websocket)
|
|
|
|
async def connect(self, websocket: WebSocket, db: Session):
|
|
await websocket.accept()
|
|
self.connections.append(websocket)
|
|
try:
|
|
await self.handle_connection(websocket, db)
|
|
except WebSocketDisconnect as e:
|
|
logger.info(f"WebSocket disconnected with code {e.code}: {e.reason}")
|
|
finally:
|
|
self.connections.remove(websocket)
|
|
if websocket in self.user_by_ws:
|
|
del self.user_by_ws[websocket]
|
|
|
|
async def broadcast(self, message: dict):
|
|
for websocket in self.connections:
|
|
await websocket.send_json(message)
|
|
|
|
async def send_to_user(self, user_id: int, message: dict):
|
|
for websocket in self.connections:
|
|
if self.user_by_ws.get(websocket) == user_id:
|
|
await websocket.send_json(message)
|
|
|
|
messagingManager = MessaggingSocketManager()
|
|
|
|
@router.websocket("/chat/ws")
|
|
async def chat_websocket(
|
|
websocket: WebSocket,
|
|
db: Session = Depends(get_db)
|
|
):
|
|
await messagingManager.connect(websocket, db)
|
|
|
|
|
|
# File serving endpoints
|
|
@router.get("/uploads/files/normal/{filename}")
|
|
async def get_file_normal(filename: str):
|
|
if not re.match(r"^[A-Za-z0-9._-]+$", filename):
|
|
raise HTTPException(status_code=400, detail="Invalid file name")
|
|
path = FILES_NORMAL_DIR / filename
|
|
if not path.exists():
|
|
raise HTTPException(status_code=404, detail="File not found")
|
|
return FileResponse(str(path))
|
|
|
|
|
|
@router.get("/uploads/files/encrypted/{filename}")
|
|
async def get_file_encrypted(filename: str, current_user: User = Depends(get_current_user)):
|
|
if not re.match(r"^[A-Za-z0-9._-]+$", filename):
|
|
raise HTTPException(status_code=400, detail="Invalid file name")
|
|
path = FILES_ENCRYPTED_DIR / filename
|
|
if not path.exists():
|
|
raise HTTPException(status_code=404, detail="File not found")
|
|
|
|
match = re.match(r"^(\d+)_(\d+)_(\d+)_.*$", path.resolve().name)
|
|
if match:
|
|
sender_id = int(match.group(1))
|
|
recipient_id = int(match.group(2))
|
|
|
|
if not current_user.id in [sender_id, recipient_id]:
|
|
raise HTTPException(403)
|
|
else:
|
|
raise HTTPException(500)
|
|
|
|
return FileResponse(str(path)) |