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45bd7b39a4
This is super hacky... :o But then again it should at least prevent data loss. Note: At least this isn't required for NixOS 21.05.
93 lines
2.3 KiB
Python
Executable File
93 lines
2.3 KiB
Python
Executable File
#!@PYTHON@
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import json
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import os
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import re
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import shlex
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import sqlite3
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import subprocess
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import sys
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DB_PATH = os.path.join(os.environ['HOME'], '.config/Signal/sql/db.sqlite')
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DB_COPY = os.path.join(os.environ['HOME'], '.config/Signal/sql/db.tmp')
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CONFIG_PATH = os.path.join(os.environ['HOME'], '.config/Signal/config.json')
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def zenity_askyesno(title, text):
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args = [
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'@ZENITY@',
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'--question',
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'--title',
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shlex.quote(title),
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'--text',
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shlex.quote(text)
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]
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return subprocess.run(args).returncode == 0
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def start_signal():
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os.execvp('@SIGNAL-DESKTOP@', ['@SIGNAL-DESKTOP@'] + sys.argv[1:])
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def copy_pragma(name):
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result = subprocess.run([
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'@SQLCIPHER@',
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DB_PATH,
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f"PRAGMA {name};"
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], check=True, capture_output=True).stdout
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result = re.search(r'[0-9]+', result.decode()).group(0)
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subprocess.run([
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'@SQLCIPHER@',
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DB_COPY,
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f"PRAGMA key = \"x'{key}'\"; PRAGMA {name} = {result};"
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], check=True, capture_output=True)
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try:
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# Test if DB is encrypted:
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con = sqlite3.connect(f'file:{DB_PATH}?mode=ro', uri=True)
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cursor = con.cursor()
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cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
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con.close()
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except:
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# DB is encrypted, everything ok:
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start_signal()
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# DB is unencrypted!
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answer = zenity_askyesno(
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"Error: Signal-Desktop database is not encrypted",
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"Should we try to fix this automatically?"
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+ "You likely want to backup ~/.config/Signal/ first."
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)
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if not answer:
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answer = zenity_askyesno(
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"Launch Signal-Desktop",
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"DB is unencrypted, should we still launch Signal-Desktop?"
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+ "Warning: This could result in data loss!"
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)
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if not answer:
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print('Aborted')
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sys.exit(0)
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start_signal()
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# Re-encrypt the DB:
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with open(CONFIG_PATH) as json_file:
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key = json.load(json_file)['key']
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result = subprocess.run([
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'@SQLCIPHER@',
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DB_PATH,
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f" ATTACH DATABASE '{DB_COPY}' AS signal_db KEY \"x'{key}'\";"
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+ " SELECT sqlcipher_export('signal_db');"
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+ " DETACH DATABASE signal_db;"
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]).returncode
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if result != 0:
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print('DB encryption failed')
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sys.exit(1)
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# Need to copy user_version and schema_version manually:
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copy_pragma('user_version')
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copy_pragma('schema_version')
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os.rename(DB_COPY, DB_PATH)
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start_signal()
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