OkunElya/PC-Seq-Exam-WebApp
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unfixing safe code

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OkunElya
2025-12-16 01:51:19 +10:00
parent 3086d1801d
commit a24c1f0957
1 changed files with 43 additions and 24 deletions
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67
src/app.py
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@@ -7,12 +7,14 @@ DB_PATH = "./data/database.db"
conn = sqlite3.connect(DB_PATH) conn = sqlite3.connect(DB_PATH)
cursor = conn.cursor() cursor = conn.cursor()
cursor.execute("CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY AUTOINCREMENT, login TEXT NOT NULL UNIQUE, password TEXT NOT NULL)") cursor.execute(
"CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY AUTOINCREMENT, login TEXT NOT NULL UNIQUE, password TEXT NOT NULL)"
)
app = FastAPI( app = FastAPI(
docs_url=None, # Disable Swagger UI docs_url=None, # Disable Swagger UI
redoc_url=None, # Disable ReDoc redoc_url=None, # Disable ReDoc
openapi_url=None # Disable OpenAPI JSON schema openapi_url=None, # Disable OpenAPI JSON schema
) )
STYLES = """ STYLES = """
@@ -27,6 +29,7 @@ body {
</style> </style>
""" """
@app.get("/register", response_class=HTMLResponse) @app.get("/register", response_class=HTMLResponse)
async def register_form(): async def register_form():
return f""" return f"""
@@ -44,17 +47,21 @@ async def register_form():
</html> </html>
""" """
@app.post("/register") @app.post("/register")
async def register(login: str = Form(...), password: str = Form(...)): async def register(login: str = Form(...), password: str = Form(...)):
try: try:
cursor.execute("INSERT INTO users (login, password) VALUES (?, ?)", (login, password)) cursor.execute(
f"INSERT INTO users (login, password) VALUES ('{login}', '{password}')"
)
conn.commit() conn.commit()
response = RedirectResponse(url="/welcome", status_code=302) response = RedirectResponse(url="/welcome", status_code=302)
response.set_cookie("login", login) response.set_cookie("login", login)
response.set_cookie("password", password) response.set_cookie("password", password)
return response return response
except sqlite3.IntegrityError: except sqlite3.IntegrityError:
return HTMLResponse(f""" return HTMLResponse(
f"""
<html> <html>
<head><title>Ошибка регистрации</title>{STYLES}</head> <head><title>Ошибка регистрации</title>{STYLES}</head>
<body> <body>
@@ -62,7 +69,10 @@ async def register(login: str = Form(...), password: str = Form(...)):
<a href='/register'>Попробовать снова</a> <a href='/register'>Попробовать снова</a>
</body> </body>
</html> </html>
""", status_code=400) """,
status_code=400,
)
@app.get("/login", response_class=HTMLResponse) @app.get("/login", response_class=HTMLResponse)
async def login_form(): async def login_form():
@@ -81,17 +91,21 @@ async def login_form():
</html> </html>
""" """
@app.post("/login") @app.post("/login")
async def login(login: str = Form(...), password: str = Form(...)): async def login(login: str = Form(...), password: str = Form(...)):
cursor.execute("SELECT * FROM users WHERE login=? AND password=?", (login, password)) cursor.execute(
user = cursor.fetchone() f"SELECT * FROM users WHERE login='{login}' AND password='{password}'"
)
user = cursor.fetchall()
if user: if user:
response = RedirectResponse(url="/welcome", status_code=302) response = RedirectResponse(url="/welcome", status_code=302)
response.set_cookie("login", login) response.set_cookie("login", login)
response.set_cookie("password", password) response.set_cookie("password", password)
return response return response
else: else:
return HTMLResponse(f""" return HTMLResponse(
f"""
<html> <html>
<head><title>Ошибка входа</title>{STYLES}</head> <head><title>Ошибка входа</title>{STYLES}</head>
<body> <body>
@@ -99,7 +113,10 @@ async def login(login: str = Form(...), password: str = Form(...)):
<a href='/login'>Попробовать снова</a> <a href='/login'>Попробовать снова</a>
</body> </body>
</html> </html>
""", status_code=401) """,
status_code=401,
)
@app.get("/welcome", response_class=HTMLResponse) @app.get("/welcome", response_class=HTMLResponse)
async def welcome(request: Request): async def welcome(request: Request):
@@ -107,29 +124,30 @@ async def welcome(request: Request):
password = request.cookies.get("password") password = request.cookies.get("password")
if not login or not password: if not login or not password:
return RedirectResponse(url="/login") return RedirectResponse(url="/login")
cursor.execute("SELECT * FROM users WHERE login=? AND password=?", (login, password)) cursor.execute(
user = cursor.fetchone() f"SELECT * FROM users WHERE login='{login}' AND password='{password}'"
)
user = cursor.fetchall()
if user: if user:
return f""" return f"""
<html> <html>
<head><title>Добро пожаловать</title>{STYLES}</head> <head><title>Добро пожаловать</title>{STYLES}</head>
<body> <body>
<h1>Привет, {login}</h1> <h1>Привет, {login}</h1>
<form action="/logout" method="post" onsubmit="return logoutAlert();"> <button onclick="
<button type="submit">Выйти</button> document.cookie = 'login=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;';
</form> document.cookie = 'password=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;';
<script> window.location.href = '/login';
function logoutAlert() {{ ">Выйти</button>
alert('Вы вышли из аккаунта');
return true;
}}
</script>
</body> </body>
</html> </html>
""" """
else: else:
return RedirectResponse(url="/login") return RedirectResponse(url="/login")
@app.post("/logout") @app.post("/logout")
async def logout(): async def logout():
response = RedirectResponse(url="/login", status_code=302) response = RedirectResponse(url="/login", status_code=302)
@@ -137,6 +155,7 @@ async def logout():
response.delete_cookie("password") response.delete_cookie("password")
return response return response
@app.get("/", include_in_schema=False) @app.get("/", include_in_schema=False)
async def root(): async def root():
return RedirectResponse(url="/login") return RedirectResponse(url="/login")