Initial YakPanel commit

YakPanel-server/backend/app/api/terminal.py

@@ -0,0 +1,68 @@
+"""YakPanel - Web Terminal API (WebSocket)"""
+import asyncio
+import os
+import sys
+from fastapi import APIRouter, WebSocket, WebSocketDisconnect
+
+router = APIRouter(prefix="/terminal", tags=["terminal"])
+
+
+@router.websocket("/ws")
+async def terminal_websocket(websocket: WebSocket):
+    """WebSocket terminal - spawns shell and streams I/O"""
+    await websocket.accept()
+
+    token = websocket.query_params.get("token")
+    if token:
+        from app.core.security import decode_token
+        if not decode_token(token):
+            await websocket.close(code=4001)
+            return
+
+    if sys.platform == "win32":
+        proc = await asyncio.create_subprocess_shell(
+            "cmd.exe",
+            stdin=asyncio.subprocess.PIPE,
+            stdout=asyncio.subprocess.PIPE,
+            stderr=asyncio.subprocess.STDOUT,
+        )
+    else:
+        proc = await asyncio.create_subprocess_shell(
+            "/bin/bash",
+            stdin=asyncio.subprocess.PIPE,
+            stdout=asyncio.subprocess.PIPE,
+            stderr=asyncio.subprocess.STDOUT,
+            env={**os.environ, "TERM": "xterm-256color"},
+        )
+
+    async def read_stdout():
+        try:
+            while proc.returncode is None and proc.stdout:
+                data = await proc.stdout.read(4096)
+                if data:
+                    await websocket.send_text(data.decode("utf-8", errors="replace"))
+        except (WebSocketDisconnect, ConnectionResetError):
+            pass
+        finally:
+            try:
+                proc.kill()
+            except ProcessLookupError:
+                pass
+
+    async def read_websocket():
+        try:
+            while True:
+                msg = await websocket.receive()
+                data = msg.get("text") or (msg.get("bytes") or b"").decode("utf-8", errors="replace")
+                if data and proc.stdin and not proc.stdin.is_closing():
+                    proc.stdin.write(data.encode("utf-8"))
+                    await proc.stdin.drain()
+        except (WebSocketDisconnect, ConnectionResetError):
+            pass
+        finally:
+            try:
+                proc.kill()
+            except ProcessLookupError:
+                pass
+
+    await asyncio.gather(read_stdout(), read_websocket())