From 9b686d79871c6f76b8ea36d8a8a43d3edb32def7 Mon Sep 17 00:00:00 2001
From: Botond Hende <nettingman@gmail.com>
Date: Fri, 30 Aug 2024 22:28:58 +0200
Subject: agents are authenticated on space traders api

---
 __main__.py          |  8 ++++---
 apirouters/agents.py | 68 +++++++++++++++++++++++++++++++++++++++++++---------
 requirements.txt     |  1 -
 3 files changed, 62 insertions(+), 15 deletions(-)

diff --git a/__main__.py b/__main__.py
index 9dba645..9b23484 100644
--- a/__main__.py
+++ b/__main__.py
@@ -4,13 +4,15 @@ from typing import Annotated
 from fastapi import FastAPI, Depends
 
 from .apirouters import agents
-from .modules import database
+from .modules.database import cursor, conn
 
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
-    database.cursor.execute(
-        "CREATE TABLE IF NOT EXISTS agents(primary_key INTEGER PRIMARY KEY, callsign TEXT NOT NULL UNIQUE, token_hash TEXT NOT NULL)")
+    cursor.execute(
+        "CREATE TABLE IF NOT EXISTS agents(primary_key INTEGER PRIMARY KEY, callsign TEXT NOT NULL UNIQUE, token TEXT NOT NULL)")
+    conn.commit()
+    agents.load_agents_from_database()
     yield
 
 
diff --git a/apirouters/agents.py b/apirouters/agents.py
index b16ab6d..89f736f 100644
--- a/apirouters/agents.py
+++ b/apirouters/agents.py
@@ -1,21 +1,33 @@
 from enum import Enum
 from typing import Annotated
 
+import openapi_client
 from fastapi import APIRouter, Depends, Response
 from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
-from passlib.context import CryptContext
 
 from ..modules.database import cursor, conn
 
 router = APIRouter()
-pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
 oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
+agents = {}
+
+
+class Agent:
+    def __init__(self, agent_symbol, token):
+        config = openapi_client.Configuration(access_token=token)
+        self.api_client = openapi_client.ApiClient(config)
+
+        self.agents_api = openapi_client.AgentsApi(self.api_client)
+        self.fleet_api = openapi_client.FleetApi(self.api_client)
+        self.systems_api = openapi_client.SystemsApi(self.api_client)
+
+        self.agent_symbol = agent_symbol
 
 
 @router.post("/token")
 async def login(form_data: OAuth2PasswordRequestForm = Depends()):
-    user = form_data.username
-    return {"access_token": user, "token_type": "bearer"}
+    passwd = form_data.password
+    return {"access_token": passwd, "token_type": "bearer"}
 
 
 class AuthResult(Enum):
@@ -24,18 +36,39 @@ class AuthResult(Enum):
     TOKEN_MISMATCH = 2
 
 
-async def auth_agent(callsign: str, token: str) -> AuthResult:
-    cursor.execute("SELECT token_hash from agents WHERE callsign = ?", (callsign,))
+def auth_agent(callsign: str, token: str) -> AuthResult:
+    cursor.execute("SELECT token from agents WHERE callsign = ?", (callsign,))
     row = cursor.fetchone()
     if row is None:
         return AuthResult.NOT_FOUND
 
-    return AuthResult.SUCCESS if pwd_context.verify(token, row[0]) else AuthResult.TOKEN_MISMATCH
+    return AuthResult.SUCCESS if token == row[0] else AuthResult.TOKEN_MISMATCH
+
+
+def load_agents_from_database() -> None:
+    cursor.execute("SELECT callsign, token from agents")
+    invalid_agents = []
+    for row in cursor.fetchall():
+        callsign = row[0]
+        token = row[1]
+        try:
+            agent = Agent(callsign, token)
+            if agent.agents_api.get_my_agent().data.symbol != callsign:
+                invalid_agents.append(callsign)
+                continue
+            agents[callsign] = agent
+        except:
+            invalid_agents.append(callsign)
+
+    if len(invalid_agents) > 0:
+        for invalid in invalid_agents:
+            cursor.execute("DELETE from agents WHERE callsign = ?", (invalid,))
+        conn.commit()
 
 
 @router.post("/{callsign}/init", status_code=201)
 async def init_agent(callsign: str, token: Annotated[str, Depends(oauth2_scheme)], response: Response):
-    result = await auth_agent(callsign, token)
+    result = auth_agent(callsign, token)
 
     if result == AuthResult.SUCCESS:
         response.status_code = 200
@@ -45,9 +78,22 @@ async def init_agent(callsign: str, token: Annotated[str, Depends(oauth2_scheme)
         response.status_code = 400
         return '{"error": "Agent already registered but with a different token."}'
 
-    # TODO: test token on spacetraders api
+    success = True
+    agent = None
+
+    try:
+        agent = Agent(callsign, token)
+        if agent.agents_api.get_my_agent().data.symbol != callsign:
+            success = False
+    except:
+        success = False
+
+    if success:
+        agents[callsign] = agent
+    else:
+        response.status_code = 400
+        return '{"error": "Agent could not be authenticated on the SpaceTraders API."}'
 
-    token_hash = pwd_context.hash(token)
-    cursor.execute("INSERT INTO agents (callsign, token_hash) VALUES (?, ?)", (callsign, token_hash))
+    cursor.execute("INSERT INTO agents (callsign, token) VALUES (?, ?)", (callsign, token))
     conn.commit()
     return '{"result": "Agent successfully registered."}'
diff --git a/requirements.txt b/requirements.txt
index 7833938..13712cc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1 @@
 fastapi[standard]
-passlib[bcrypt]
-- 
cgit v1.2.3-70-g09d2