Files
ds-chat/backend/app/services/password_service.py
T
ksmith fc96e85014 Add self-service password change, forgot-password flow, and fix admin UI bugs
Users can change their own password from the profile modal, and a
"forgot password" link sends a 15-minute expiring reset link (same
hashed-token pattern as site invites). The forgot-password response is
always generic so it never reveals which emails are registered.

Also fixes two admin-page display bugs found while testing: table row
divider lines that didn't line up across a row (the actions column had
`display: flex` on the <td> itself, breaking it out of normal table-cell
layout -- moved to a child <div>), and the pending-invites list floating
with no visual grouping (now boxed with a label and per-status badges).
2026-08-14 21:06:17 -06:00

79 lines
2.5 KiB
Python

import secrets
from datetime import datetime, timezone
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession
from app.models import PasswordReset, User
from app.security import hash_password, hash_token, verify_password
from app.services.email_service import send_email
class InvalidCurrentPasswordError(Exception):
pass
class PasswordResetInvalidError(Exception):
pass
async def change_password(
db: AsyncSession, user: User, current_password: str, new_password: str
) -> None:
if not verify_password(current_password, user.password_hash):
raise InvalidCurrentPasswordError()
user.password_hash = hash_password(new_password)
await db.commit()
async def request_password_reset(db: AsyncSession, email: str, base_url: str) -> None:
# Always returns normally, whether or not the email matched an account --
# the router never reveals which, to avoid leaking registered emails.
result = await db.execute(
select(User).where(User.email == email, User.is_active.is_(True))
)
user = result.scalar_one_or_none()
if user is None:
return
raw_token = secrets.token_urlsafe(32)
db.add(PasswordReset(user_id=user.id, token_hash=hash_token(raw_token)))
await db.commit()
reset_link = f"{base_url.rstrip('/')}/reset-password?token={raw_token}"
await send_email(
db,
email,
"Reset your KeepItTalking password",
f"Someone requested a password reset for this account.\n\n"
f"Reset it here:\n{reset_link}\n\n"
f"This link expires in 15 minutes. If you didn't request this, "
f"you can ignore this email.",
)
async def _get_valid_reset(db: AsyncSession, token: str) -> PasswordReset:
result = await db.execute(
select(PasswordReset).where(PasswordReset.token_hash == hash_token(token))
)
reset = result.scalar_one_or_none()
if reset is None or reset.used:
raise PasswordResetInvalidError()
if reset.expires_at <= datetime.now(timezone.utc):
raise PasswordResetInvalidError()
return reset
async def validate_reset_token(db: AsyncSession, token: str) -> None:
await _get_valid_reset(db, token)
async def complete_password_reset(db: AsyncSession, token: str, new_password: str) -> User:
reset = await _get_valid_reset(db, token)
user = await db.get(User, reset.user_id)
user.password_hash = hash_password(new_password)
reset.used = True
await db.commit()
await db.refresh(user)
return user