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# Hydrogram - Telegram MTProto API Client Library for Python
# Copyright (C) 2017-2023 Dan <https://github.com/delivrance>
# Copyright (C) 2023-present Amano LLC <https://amanoteam.com>
#
# This file is part of Hydrogram.
#
# Hydrogram is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Hydrogram is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Hydrogram. If not, see <http://www.gnu.org/licenses/>.
import base64
import inspect
import struct
import time
from pathlib import Path
from typing import Any, List, Optional, Tuple
import aiosqlite
from hydrogram import raw, utils
from .base import BaseStorage
# language=SQLite
SCHEMA = """
CREATE TABLE sessions
(
dc_id INTEGER PRIMARY KEY,
api_id INTEGER,
test_mode INTEGER,
auth_key BLOB,
date INTEGER NOT NULL,
user_id INTEGER,
is_bot INTEGER
);
CREATE TABLE peers
(
id INTEGER PRIMARY KEY,
access_hash INTEGER,
type INTEGER NOT NULL,
username TEXT,
phone_number TEXT,
last_update_on INTEGER NOT NULL DEFAULT (CAST(STRFTIME('%s', 'now') AS INTEGER))
);
CREATE TABLE version
(
number INTEGER PRIMARY KEY
);
CREATE INDEX idx_peers_id ON peers (id);
CREATE INDEX idx_peers_username ON peers (username);
CREATE INDEX idx_peers_phone_number ON peers (phone_number);
CREATE TRIGGER trg_peers_last_update_on
AFTER UPDATE
ON peers
BEGIN
UPDATE peers
SET last_update_on = CAST(STRFTIME('%s', 'now') AS INTEGER)
WHERE id = NEW.id;
END;
"""
def get_input_peer(peer_id: int, access_hash: int, peer_type: str):
if peer_type in {"user", "bot"}:
return raw.types.InputPeerUser(user_id=peer_id, access_hash=access_hash)
if peer_type == "group":
return raw.types.InputPeerChat(chat_id=-peer_id)
if peer_type in {"channel", "supergroup"}:
return raw.types.InputPeerChannel(
channel_id=utils.get_channel_id(peer_id), access_hash=access_hash
)
raise ValueError(f"Invalid peer type: {peer_type}")
class SQLiteStorage(BaseStorage):
VERSION = 3
USERNAME_TTL = 8 * 60 * 60
FILE_EXTENSION = ".session"
def __init__(
self,
name: str,
workdir: Optional[Path] = None,
session_string: Optional[str] = None,
use_memory: bool = False,
):
super().__init__(name)
self.conn: aiosqlite.Connection = None
if workdir and not use_memory:
self.database = workdir / (self.name + self.FILE_EXTENSION)
else:
self.database = ":memory:"
self.session_string = session_string
async def update(self):
version = await self.version()
if version == 1:
await self.conn.execute("DELETE FROM peers")
await self.conn.commit()
version += 1
if version == 2:
await self.conn.execute("ALTER TABLE sessions ADD api_id INTEGER")
await self.conn.commit()
version += 1
await self.version(version)
async def create(self):
await self.conn.executescript(SCHEMA)
await self.conn.execute("INSERT INTO version VALUES (?)", (self.VERSION,))
await self.conn.execute(
"INSERT INTO sessions VALUES (?, ?, ?, ?, ?, ?, ?)",
(2, None, None, None, 0, None, None),
)
await self.conn.commit()
async def open(self):
path = self.database
file_exists = isinstance(path, Path) and path.is_file()
self.conn = await aiosqlite.connect(self.database)
await self.conn.execute("PRAGMA journal_mode=WAL")
if file_exists:
await self.update()
await self.conn.execute("VACUUM")
await self.conn.commit()
else:
await self.create()
if self.session_string:
dc_id, api_id, test_mode, auth_key, user_id, is_bot = struct.unpack(
self.SESSION_STRING_FORMAT,
base64.urlsafe_b64decode(
self.session_string + "=" * (-len(self.session_string) % 4)
),
)
await self.dc_id(dc_id)
await self.api_id(api_id)
await self.test_mode(test_mode)
await self.auth_key(auth_key)
await self.user_id(user_id)
await self.is_bot(is_bot)
await self.date(0)
async def save(self):
await self.date(int(time.time()))
await self.conn.commit()
async def close(self):
await self.conn.close()
async def delete(self):
if self.database != ":memory:":
Path(self.database).unlink()
async def update_peers(self, peers: List[Tuple[int, int, str, str, str]]):
await self.conn.executemany(
"REPLACE INTO peers (id, access_hash, type, username, phone_number)"
"VALUES (?, ?, ?, ?, ?)",
peers,
)
async def get_peer_by_id(self, peer_id: int):
q = await self.conn.execute(
"SELECT id, access_hash, type FROM peers WHERE id = ?", (peer_id,)
)
r = await q.fetchone()
if r is None:
raise KeyError(f"ID not found: {peer_id}")
return get_input_peer(*r)
async def get_peer_by_username(self, username: str):
q = await self.conn.execute(
"SELECT id, access_hash, type, last_update_on FROM peers WHERE username = ?"
"ORDER BY last_update_on DESC",
(username,),
)
r = await q.fetchone()
if r is None:
raise KeyError(f"Username not found: {username}")
if abs(time.time() - r[3]) > self.USERNAME_TTL:
raise KeyError(f"Username expired: {username}")
return get_input_peer(*r[:3])
async def get_peer_by_phone_number(self, phone_number: str):
q = await self.conn.execute(
"SELECT id, access_hash, type FROM peers WHERE phone_number = ?",
(phone_number,),
)
r = await q.fetchone()
if r is None:
raise KeyError(f"Phone number not found: {phone_number}")
return get_input_peer(*r)
async def _get(self):
attr = inspect.stack()[2].function
q = await self.conn.execute(f"SELECT {attr} FROM sessions")
row = await q.fetchone()
return row[0] if row else None
async def _set(self, value: Any):
attr = inspect.stack()[2].function
await self.conn.execute(f"UPDATE sessions SET {attr} = ?", (value,))
await self.conn.commit()
async def _accessor(self, value: Any = object):
return await self._get() if value is object else await self._set(value)
async def dc_id(self, value: int = object):
return await self._accessor(value)
async def api_id(self, value: int = object):
return await self._accessor(value)
async def test_mode(self, value: bool = object):
return await self._accessor(value)
async def auth_key(self, value: bytes = object):
return await self._accessor(value)
async def date(self, value: int = object):
return await self._accessor(value)
async def user_id(self, value: int = object):
return await self._accessor(value)
async def is_bot(self, value: bool = object):
return await self._accessor(value)
async def version(self, value: int = object):
if value is object:
q = await self.conn.execute("SELECT number FROM version")
row = await q.fetchone()
return row[0] if row else None
await self.conn.execute("UPDATE version SET number = ?", (value,))
await self.conn.commit()
return None