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# Pyrogram - Telegram MTProto API Client Library for Python
# Copyright (C) 2017-present Dan <https://github.com/delivrance>
# Copyright (C) 2017-present bakatrouble <https://github.com/bakatrouble>
# Copyright (C) 2017-present cavallium <https://github.com/cavallium>
# Copyright (C) 2017-present andrew-ld <https://github.com/andrew-ld>
# Copyright (C) 2017-present 01101sam <https://github.com/01101sam>
# Copyright (C) 2017-present KurimuzonAkuma <https://github.com/KurimuzonAkuma>
#
# 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 logging
import os
import sqlite3
from pathlib import Path
from .sqlite_storage import SQLiteStorage
log = logging.getLogger(__name__)
USERNAMES_SCHEMA = """
CREATE TABLE IF NOT EXISTS usernames
(
id INTEGER,
username TEXT,
FOREIGN KEY (id) REFERENCES peers(id)
);
CREATE INDEX IF NOT EXISTS idx_usernames_username ON usernames (username);
"""
UPDATE_STATE_SCHEMA = """
CREATE TABLE update_state
(
id INTEGER PRIMARY KEY,
pts INTEGER,
qts INTEGER,
date INTEGER,
seq INTEGER
);
"""
class FileStorage(SQLiteStorage):
FILE_EXTENSION = ".session"
def __init__(self, name: str, workdir: Path):
super().__init__(name)
self.database = workdir / (self.name + self.FILE_EXTENSION)
def _connect_impl(self, path):
self.conn = sqlite3.connect(path)
with self.conn:
self.conn.execute("PRAGMA journal_mode=WAL").close()
self.conn.execute("PRAGMA synchronous=NORMAL").close()
self.conn.execute("PRAGMA temp_store=1").close()
async def update(self):
version = await self.version()
if version == 1:
with self.conn:
self.conn.execute("DELETE FROM peers")
version += 1
if version == 2:
with self.conn:
try:
self.conn.execute("ALTER TABLE sessions ADD api_id INTEGER")
except Exception as e:
log.exception(e)
version += 1
if version == 3:
with self.conn:
self.conn.executescript(USERNAMES_SCHEMA)
version += 1
if version == 4:
with self.conn:
self.conn.executescript(UPDATE_STATE_SCHEMA)
version += 1
if version == 5:
with self.conn:
self.conn.executescript("CREATE INDEX IF NOT EXISTS idx_usernames_id ON usernames (id);")
version += 1
await self.version(version)
async def open(self):
path = self.database
file_exists = path.is_file()
self.conn = sqlite3.connect(str(path), timeout=1, check_same_thread=False)
if not file_exists:
await self.create()
else:
await self.update()
with self.conn:
self.conn.execute("VACUUM")
async def delete(self):
os.remove(self.database)