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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 base64

import json

import logging

import os

import sqlite3

from pathlib import Path

from .sqlite_storage import SQLiteStorage

log = logging.getLogger(__name__)

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 migrate_from_json(self, session_json: dict):

self.open()

self.dc_id(session_json["dc_id"])

self.test_mode(session_json["test_mode"])

self.auth_key(base64.b64decode("".join(session_json["auth_key"])))

self.user_id(session_json["user_id"])

self.date(session_json.get("date", 0))

self.is_bot(session_json.get("is_bot", False))

peers_by_id = session_json.get("peers_by_id", {})

peers_by_phone = session_json.get("peers_by_phone", {})

peers = {}

for k, v in peers_by_id.items():

if v is None:

type_ = "group"

elif k.startswith("-100"):

type_ = "channel"

else:

type_ = "user"

peers[int(k)] = [int(k), int(v) if v is not None else None, type_, None, None]

for k, v in peers_by_phone.items():

peers[v][4] = k

# noinspection PyTypeChecker

self.update_peers(peers.values())

def update(self):

version = self.version()

if version == 1:

with self.lock, self.conn:

self.conn.execute("DELETE FROM peers")

version += 1

self.version(version)

async def open(self):

path = self.database

file_exists = path.is_file()

if file_exists:

try:

with open(str(path), encoding="utf-8") as f:

session_json = json.load(f)

except ValueError:

pass

else:

log.warning("JSON session storage detected! Converting it into an SQLite session storage...")

path.rename(path.name + ".OLD")

log.warning(f'The old session file has been renamed to "{path.name}.OLD"')

self.migrate_from_json(session_json)

log.warning("Done! The session has been successfully converted from JSON to SQLite storage")

return

if Path(path.name + ".OLD").is_file():

log.warning(f'Old session file detected: "{path.name}.OLD". You can remove this file now')

self.conn = sqlite3.connect(str(path), timeout=1, check_same_thread=False)

if not file_exists:

self.create()

else:

self.update()

with self.conn:

try: # Python 3.6.0 (exactly this version) is bugged and won't successfully execute the vacuum

self.conn.execute("VACUUM")

except sqlite3.OperationalError:

pass

async def delete(self):

os.remove(self.database)

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