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# Pyrogram - Telegram MTProto API Client Library for Python

# This file is part of Pyrogram.

# Pyrogram 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.

# Pyrogram 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 Pyrogram. If not, see <http://www.gnu.org/licenses/>.

import inspect

import sqlite3

import time

from threading import Lock

from typing import List, Tuple, Any

from pyrogram import raw

from .storage import Storage

from .. import utils

# language=SQLite

SCHEMA = """

CREATE TABLE sessions

(

dc_id INTEGER PRIMARY KEY,

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(Storage):

VERSION = 2

USERNAME_TTL = 8 * 60 * 60

def __init__(self, name: str):

super().__init__(name)

self.conn = None # type: sqlite3.Connection

self.lock = Lock()

def create(self):

with self.lock, self.conn:

self.conn.executescript(SCHEMA)

self.conn.execute(

"INSERT INTO version VALUES (?)",

(self.VERSION,)

)

self.conn.execute(

"INSERT INTO sessions VALUES (?, ?, ?, ?, ?, ?)",

(2, None, None, 0, None, None)

)

async def open(self):

raise NotImplementedError

async def save(self):

await self.date(int(time.time()))

with self.lock:

self.conn.commit()

async def close(self):

with self.lock:

self.conn.close()

async def delete(self):

raise NotImplementedError

async def update_peers(self, peers: List[Tuple[int, int, str, str, str]]):

with self.lock:

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):

r = self.conn.execute(

"SELECT id, access_hash, type FROM peers WHERE id = ?",

(peer_id,)

).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):

r = self.conn.execute(

"SELECT id, access_hash, type, last_update_on FROM peers WHERE username = ?",

(username,)

).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):

r = self.conn.execute(

"SELECT id, access_hash, type FROM peers WHERE phone_number = ?",

(phone_number,)

).fetchone()

if r is None:

raise KeyError(f"Phone number not found: {phone_number}")

return get_input_peer(*r)

def _get(self):

attr = inspect.stack()[2].function

return self.conn.execute(

f"SELECT {attr} FROM sessions"

).fetchone()[0]

def _set(self, value: Any):

attr = inspect.stack()[2].function

with self.lock, self.conn:

self.conn.execute(

f"UPDATE sessions SET {attr} = ?",

(value,)

)

def _accessor(self, value: Any = object):

return self._get() if value == object else self._set(value)

async def dc_id(self, value: int = object):

return self._accessor(value)

async def test_mode(self, value: bool = object):

return self._accessor(value)

async def auth_key(self, value: bytes = object):

return self._accessor(value)

async def date(self, value: int = object):

return self._accessor(value)

async def user_id(self, value: int = object):

return self._accessor(value)

async def is_bot(self, value: bool = object):

return self._accessor(value)

def version(self, value: int = object):

if value == object:

return self.conn.execute(

"SELECT number FROM version"

).fetchone()[0]

else:

with self.lock, self.conn:

self.conn.execute(

"UPDATE version SET number = ?",

(value,)

)

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