forked from IPKM/nmreval
issue126-backup (#198)
reworked autosave, closes #126; update with restart
This commit is contained in:
207
src/gui_qt/lib/backup.py
Normal file
207
src/gui_qt/lib/backup.py
Normal file
@ -0,0 +1,207 @@
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import os
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import sqlite3
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from datetime import datetime
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from pathlib import Path
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from nmreval.configs import config_paths
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from ..Qt import QtCore, QtWidgets
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DB_FILE = '/tmp/nmreval.db'
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class BackupManager(QtCore.QObject):
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def __init__(self):
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super().__init__()
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self.create_table()
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self._pid = None
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def create_table(self):
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con = sqlite3.connect(DB_FILE)
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con.execute(
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"CREATE TABLE IF NOT EXISTS sessions "
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"(pid INTEGER NOT NULL, backup_file TEXT NOT NULL, last_save TEXT);"
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)
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def create_entry(self, pid: int):
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backup_path = config_paths() / f'autosave_{datetime.now().strftime("%Y-%m-%d_%H%M%S")}_{pid}.nmr'
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con = sqlite3.connect(DB_FILE)
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con.execute('INSERT INTO sessions VALUES(?, ?, ?);',
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(pid, str(backup_path), None))
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con.commit()
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con.close()
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self._pid = pid
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return backup_path
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def update_last_save(self):
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con = sqlite3.connect(DB_FILE)
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con.execute(
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'UPDATE sessions SET last_save = ? WHERE pid = ?',
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(datetime.now().strftime("%Y-%m-%d %H:%M:%S"), self._pid)
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)
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con.commit()
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con.close()
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def search_unsaved(self):
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con = sqlite3.connect(DB_FILE)
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cursor = con.cursor()
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res = cursor.execute('SELECT sessions.* FROM sessions;')
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con.commit()
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data = res.fetchall()
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con.close()
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missing_processes = []
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for pid, fname, save_date in data:
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try:
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os.kill(pid, 0)
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except ProcessLookupError:
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if Path(fname).exists():
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missing_processes.append((pid, fname, save_date))
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else:
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# remove entries without valid file
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self.remove_row(pid)
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if missing_processes:
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msg = QLonelyBackupWindow()
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msg.add_files(missing_processes)
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msg.exec()
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toberead = msg.recover
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for pid in toberead[0]:
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self.remove_file(pid)
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for pid in toberead[1]:
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self.remove_row(pid)
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return list(toberead[1].values())
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return []
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def remove_row(self, pid):
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con = sqlite3.connect(DB_FILE)
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con.execute('DELETE FROM sessions WHERE pid = ?', (pid,))
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con.commit()
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con.close()
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def remove_file(self, pid: int = None):
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if pid is None:
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pid = self._pid
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con = sqlite3.connect(DB_FILE)
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cursor = con.cursor()
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# remove backup file
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res = cursor.execute('SELECT sessions.backup_file FROM sessions WHERE pid = ?', (pid,))
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con.commit()
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fname = Path(res.fetchone()[0])
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con.close()
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fname.unlink(missing_ok=True)
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# because autosave backups in a *.nmr.0 file and then moves it to *.nmr we look also for this one.
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fname.with_suffix('.nmr.0').unlink(missing_ok=True)
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# after removal of file also remove entry
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self.remove_row(pid)
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def delete_db_if_empty(self):
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con = sqlite3.connect(DB_FILE)
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cursor = con.cursor()
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res = cursor.execute('SELECT COUNT(sessions.pid) FROM sessions GROUP BY sessions.pid;')
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con.commit()
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remaining_processes = res.fetchone()
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con.close()
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if remaining_processes is None:
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Path(DB_FILE).unlink()
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def close(self):
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self.remove_file()
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self.delete_db_if_empty()
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class QLonelyBackupWindow(QtWidgets.QDialog):
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def __init__(self, parent=None):
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super().__init__(parent=parent)
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self.recover = [[], {}] # list of pid to delete, dict of files to read {pid: file}
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self.setWindowTitle('Adopt a file!')
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self.resize(720, 320)
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layout = QtWidgets.QVBoxLayout(self)
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self.label = QtWidgets.QLabel(self)
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self.label.setText('Abandoned backup file(s) looking for a loving home!\n'
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'(Files will all be loaded to same instance)')
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layout.addWidget(self.label)
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self.table = QtWidgets.QTableWidget(self)
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self.table.setColumnCount(4)
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self.table.setHorizontalHeaderLabels(['File name', 'Last saved', 'File size', 'Action'])
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self.table.setGridStyle(QtCore.Qt.PenStyle.DashLine)
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# self.table.horizontalHeader().setStretchLastSection(True)
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self.table.verticalHeader().setVisible(False)
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self.table.horizontalHeader().setSectionResizeMode(0, QtWidgets.QHeaderView.Stretch)
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layout.addWidget(self.table)
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self.buttons = QtWidgets.QDialogButtonBox(self)
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self.buttons.setOrientation(QtCore.Qt.Orientation.Horizontal)
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self.buttons.setStandardButtons(QtWidgets.QDialogButtonBox.Ok)
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layout.addWidget(self.buttons)
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self.buttons.accepted.connect(self.accept)
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def add_files(self, entries):
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self.table.setRowCount(len(entries))
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for i, (pid, path, date) in enumerate(entries):
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path = Path(path)
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item1 = QtWidgets.QTableWidgetItem(path.name)
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item1.setFlags(QtCore.Qt.ItemFlag.ItemIsEnabled)
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item1.setData(QtCore.Qt.ItemDataRole.UserRole, pid)
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item1.setData(QtCore.Qt.ItemDataRole.UserRole+1, path)
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self.table.setItem(i, 0, item1)
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item2 = QtWidgets.QTableWidgetItem(date)
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item2.setFlags(QtCore.Qt.ItemFlag.ItemIsEnabled)
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self.table.setItem(i, 1, item2)
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size = path.stat().st_size
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size_cnt = 0
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while size > 1024:
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# make file size human-readable
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size /= 1024
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size_cnt += 1
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if size_cnt == 5:
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break
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byte = ['bytes', 'kB', 'MiB', 'GiB', 'TiB', 'PiB'][size_cnt]
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item3 = QtWidgets.QTableWidgetItem(f'{size:.2f} {byte}')
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item3.setFlags(QtCore.Qt.ItemFlag.ItemIsEnabled)
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self.table.setItem(i, 2, item3)
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cw = QtWidgets.QComboBox(self)
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cw.addItems(['Load', 'Delete', 'Keep for later'])
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self.table.setCellWidget(i, 3, cw)
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self.table.resizeColumnsToContents()
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def accept(self):
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for i in range(self.table.rowCount()):
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decision = self.table.cellWidget(i, 3).currentIndex()
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item = self.table.item(i, 0)
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pid = item.data(QtCore.Qt.ItemDataRole.UserRole)
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if decision == 0:
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# load file
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self.recover[1][pid] = item.data(QtCore.Qt.ItemDataRole.UserRole+1)
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elif decision == 1:
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# delete
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self.recover[0].append(pid)
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else:
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# do nothing
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pass
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super().accept()
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@ -1,4 +1,3 @@
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import sys
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from pathlib import Path
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from .codeeditor import _make_textformats
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@ -6,12 +5,14 @@ from ..Qt import QtWidgets, QtCore, QtGui
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from nmreval.configs import config_paths
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STYLES = {'INFO': _make_textformats('black'),
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'WARNING': _make_textformats('blue'),
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'ERROR': _make_textformats('red', 'bold'),
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'DEBUG': _make_textformats('black', 'italic'),
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'file': _make_textformats('red', 'italic'),
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'PyError': _make_textformats('red', 'bold-italic')}
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STYLES = {
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'INFO': _make_textformats('black'),
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'WARNING': _make_textformats('blue'),
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'ERROR': _make_textformats('red', 'bold'),
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'DEBUG': _make_textformats('black', 'italic'),
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'file': _make_textformats('red', 'italic'),
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'PyError': _make_textformats('red', 'bold-italic'),
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}
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class LogHighlighter(QtGui.QSyntaxHighlighter):
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288
src/gui_qt/lib/update.py
Normal file
288
src/gui_qt/lib/update.py
Normal file
@ -0,0 +1,288 @@
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from __future__ import annotations
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import hashlib
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import os
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import subprocess
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import urllib.request
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from datetime import datetime
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from os import getenv, stat
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from os.path import exists
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from pathlib import Path
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from urllib.error import HTTPError
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from PyQt5 import QtWidgets, QtCore
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from nmreval.lib.logger import logger
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class UpdateDialog(QtWidgets.QDialog):
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startDownload = QtCore.pyqtSignal(tuple)
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restartSignal = QtCore.pyqtSignal()
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def __init__(self, filename: str = None, parent=None):
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super().__init__(parent=parent)
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self._init_ui()
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if filename is None:
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filename = getenv('APPIMAGE')
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self._appfile = filename
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self.updater = Updater()
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self.thread = QtCore.QThread(self)
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self.thread.start()
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self.helper = Downloader()
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self.startDownload.connect(self.helper.run_download)
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self.helper.progressChanged.connect(self.status.setText)
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self.helper.finished.connect(self.finish_update)
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self.helper.started.connect(self.status.show)
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self.helper.moveToThread(self.thread)
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self.look_for_updates(self._appfile)
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def _init_ui(self):
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self.setWindowTitle('Updates')
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layout = QtWidgets.QVBoxLayout()
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self.label = QtWidgets.QLabel()
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layout.addWidget(self.label)
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layout.addSpacing(10)
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self.status = QtWidgets.QLabel()
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self.status.hide()
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layout.addWidget(self.status)
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layout.addSpacing(10)
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self.dialog_button = QtWidgets.QDialogButtonBox()
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self.dialog_button.accepted.connect(self.update_appimage)
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self.dialog_button.rejected.connect(self.close)
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layout.addWidget(self.dialog_button)
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self.setLayout(layout)
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def look_for_updates(self, filename=None):
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logger.info(f'Looking for updates, compare to file {filename}')
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# Download zsync file of latest Appimage, look for SHA-1 hash and compare with hash of AppImage
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is_updateble, m_time_file, m_time_zsync = self.updater.get_update_information(filename)
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label_text = ''
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if is_updateble is None:
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label_text += '<p>Could not determine if this version is newer, please update manually (if necessary).</p>'
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dialog_bttns = QtWidgets.QDialogButtonBox.Close
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elif is_updateble:
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label_text += '<p>Different version available. Press Ok to download this version, Cancel to ignore.</p>'
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dialog_bttns = QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel
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else:
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label_text += '<p>Version may be already up-to-date.</p>'
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dialog_bttns = QtWidgets.QDialogButtonBox.Close
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if m_time_zsync is None:
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label_text += '<p>Creation date of remote version is unknown.</p>'
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else:
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label_text += f'<p>Date of most recent AppImage: {m_time_zsync.strftime("%d %B %Y %H:%M")}</p>'
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if m_time_file is None:
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label_text += 'No AppImage file found, press Ok to download latest version.'
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dialog_bttns = QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Close
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else:
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label_text += f'<p>Date of used AppImage: {m_time_file.strftime("%d %B %Y %H:%M")}</p>'
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self.label.setText(label_text)
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self.dialog_button.setStandardButtons(dialog_bttns)
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@QtCore.pyqtSlot()
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def update_appimage(self):
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if self._appfile is None:
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args = (self.updater.zsync_url,)
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else:
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# this breaks the download for some reason
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args = (self.updater.zsync_url, self._appfile)
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self.dialog_button.setEnabled(False)
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self.startDownload.emit(args)
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self.status.show()
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@QtCore.pyqtSlot(int, str)
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def finish_update(self, retcode: int, file_loc: str):
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restart = QRestartWindow(state=retcode, file_loc=file_loc, parent=self)
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res = restart.exec()
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self.close()
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if res == QtWidgets.QMessageBox.Ok:
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self.restartSignal.emit()
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def closeEvent(self, evt):
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self.thread.quit()
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self.thread.wait()
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super().closeEvent(evt)
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class QRestartWindow(QtWidgets.QMessageBox):
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def __init__(self, state: int, file_loc: str, parent=None):
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super().__init__(parent=parent)
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self._appfile = file_loc
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if state:
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self.setText('Download failed')
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self.setDetailedText(f'Status code of failure is {state}')
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self.setStandardButtons(QtWidgets.QMessageBox.Close)
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self.setIcon(QtWidgets.QMessageBox.Warning)
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else:
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self.setText('Download completed!')
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self.setInformativeText("Press Restart to use new AppImage")
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self.setDetailedText(f'Location of AppImage: {file_loc}')
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self.setIcon(QtWidgets.QMessageBox.Information)
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self.setStandardButtons(QtWidgets.QMessageBox.Ok | QtWidgets.QMessageBox.Close)
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restart_button = self.button(QtWidgets.QMessageBox.Ok)
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restart_button.setText('Restart')
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self.buttonClicked.connect(self.maybe_close)
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def maybe_close(self):
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if self.clickedButton() == self.button(QtWidgets.QMessageBox.Ok):
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app = QtWidgets.QApplication.instance()
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app.quit()
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subprocess.Popen(self._appfile)
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class Downloader(QtCore.QObject):
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started = QtCore.pyqtSignal()
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finished = QtCore.pyqtSignal(int, str)
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progressChanged = QtCore.pyqtSignal(str)
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@QtCore.pyqtSlot(tuple)
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def run_download(self, args: tuple[str]):
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status = 0
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appimage_location = args[0][:-6]
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logger.info(f'Download {appimage_location}')
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if len(args) == 2:
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new_file = Path(args[1])
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else:
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new_file = Path.home() / 'Downloads' / 'NMReval-latest-x86_64.AppImage'
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if new_file.exists():
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os.rename(new_file, new_file.with_suffix('.AppImage.old'))
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try:
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with urllib.request.urlopen(appimage_location) as response:
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with new_file.open('wb') as f:
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f.write(response.read())
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new_file.chmod(0o755)
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except HTTPError as e:
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logger.exception(f'Download failed with {e}')
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status = 3
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except Exception as e:
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logger.exception(f'Download failed with {e.args}')
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status = 1
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if status != 0:
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logger.warning('Download failed, restore previous AppImage')
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try:
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os.rename(new_file.with_suffix('.AppImage.old'), new_file)
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except FileNotFoundError:
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pass
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# zsync does not support https
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self.finished.emit(status, str(new_file))
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class Updater:
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host = 'gitea.pkm.physik.tu-darmstadt.de/api/packages/IPKM/generic/NMReval/latest/'
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version = 'NMReval-latest-x86_64'
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@property
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def zsync_url(self):
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return f'https://{Updater.host}/{Updater.version}.AppImage.zsync'
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@staticmethod
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def get_zsync():
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url_zsync = f'https://{Updater.host}/{Updater.version}.AppImage.zsync'
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m_time_zsync = None
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checksum_zsync = None
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zsync_file = None
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filename = None
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try:
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with urllib.request.urlopen(url_zsync) as response:
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zsync_file = response.read()
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except HTTPError as e:
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logger.error(f'Request for zsync returned code {e}')
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except Exception as e:
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logger.exception(f'Download of zsync failed with exception {e.args}')
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|
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if zsync_file is not None:
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for line in zsync_file.split(b'\n'):
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try:
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kw, val = line.split(b': ')
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time_string = str(val, encoding='utf-8')
|
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time_format = '%a, %d %b %Y %H:%M:%S %z'
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if kw == b'MTime':
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||||
try:
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||||
m_time_zsync = datetime.strptime(time_string, time_format).astimezone(None)
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||||
except ValueError:
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||||
logger.warning(f'zsync time "{time_string}" does not match "{time_format}"')
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elif kw == b'SHA-1':
|
||||
checksum_zsync = str(val, encoding='utf-8')
|
||||
elif kw == b'Filename':
|
||||
filename = str(val, encoding='utf-8')
|
||||
|
||||
except ValueError:
|
||||
# stop when empty line is reached
|
||||
break
|
||||
|
||||
return m_time_zsync, checksum_zsync, filename
|
||||
|
||||
@staticmethod
|
||||
def get_appimage_info(filename: str):
|
||||
if filename is None:
|
||||
return None, None
|
||||
|
||||
if not exists(filename):
|
||||
return None, None
|
||||
|
||||
stat_mtime = stat(filename).st_mtime
|
||||
m_time_file = datetime.fromtimestamp(stat_mtime).replace(microsecond=0)
|
||||
with open(filename, 'rb') as f:
|
||||
checksum_file = hashlib.sha1(f.read()).hexdigest()
|
||||
if checksum_file is None:
|
||||
logger.warning('No checksum for AppImage calculated')
|
||||
|
||||
return m_time_file, checksum_file
|
||||
|
||||
@staticmethod
|
||||
def get_update_information(filename: str) -> tuple[(bool | None), datetime, datetime]:
|
||||
m_time_zsync, checksum_zsync, appname = Updater.get_zsync()
|
||||
m_time_file, checksum_file = Updater.get_appimage_info(filename)
|
||||
|
||||
logger.debug(f'zsync information {m_time_zsync}, {checksum_zsync}, {appname}')
|
||||
logger.debug(f'file information {m_time_file}, {checksum_file}')
|
||||
|
||||
if not ((checksum_file is not None) and (checksum_zsync is not None)):
|
||||
return None, m_time_file, m_time_zsync
|
||||
else:
|
||||
return checksum_file != checksum_zsync, m_time_file, m_time_zsync
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
import sys
|
||||
from gui_qt import App
|
||||
|
||||
app = App(['Team Rocket FTW!'])
|
||||
|
||||
updater = UpdateDialog()
|
||||
updater.show()
|
||||
|
||||
sys.exit(app.exec())
|
||||
|
||||
|
||||
|
||||
|
||||
@ -1,20 +1,9 @@
|
||||
from __future__ import annotations
|
||||
|
||||
import os
|
||||
import urllib.request
|
||||
from os import getenv, stat
|
||||
from os.path import exists
|
||||
import hashlib
|
||||
import subprocess
|
||||
from datetime import datetime
|
||||
from contextlib import contextmanager
|
||||
from pathlib import Path
|
||||
from urllib.error import HTTPError
|
||||
from numpy import linspace
|
||||
from scipy.interpolate import interp1d
|
||||
|
||||
from nmreval.lib.logger import logger
|
||||
|
||||
from ..Qt import QtGui, QtWidgets, QtCore
|
||||
|
||||
|
||||
@ -63,225 +52,3 @@ class RdBuCMap:
|
||||
return col
|
||||
|
||||
|
||||
class UpdateDialog(QtWidgets.QDialog):
|
||||
startDownload = QtCore.pyqtSignal(tuple)
|
||||
|
||||
def __init__(self, filename: str = None, parent=None):
|
||||
super().__init__(parent=parent)
|
||||
self._init_ui()
|
||||
|
||||
if filename is None:
|
||||
filename = getenv('APPIMAGE')
|
||||
self._appfile = filename
|
||||
|
||||
self.updater = Updater()
|
||||
|
||||
self.thread = QtCore.QThread(self)
|
||||
self.thread.start()
|
||||
self.helper = Downloader()
|
||||
self.startDownload.connect(self.helper.run_download)
|
||||
self.helper.progressChanged.connect(self.status.setText)
|
||||
self.helper.finished.connect(self.finish_update)
|
||||
self.helper.started.connect(self.status.show)
|
||||
self.helper.moveToThread(self.thread)
|
||||
|
||||
self.look_for_updates(self._appfile)
|
||||
|
||||
def _init_ui(self):
|
||||
self.setWindowTitle('Updates')
|
||||
|
||||
layout = QtWidgets.QVBoxLayout()
|
||||
|
||||
self.label = QtWidgets.QLabel()
|
||||
layout.addWidget(self.label)
|
||||
|
||||
layout.addSpacing(10)
|
||||
|
||||
self.status = QtWidgets.QLabel()
|
||||
self.status.hide()
|
||||
layout.addWidget(self.status)
|
||||
layout.addSpacing(10)
|
||||
|
||||
self.dialog_button = QtWidgets.QDialogButtonBox()
|
||||
self.dialog_button.accepted.connect(self.update_appimage)
|
||||
self.dialog_button.rejected.connect(self.close)
|
||||
layout.addWidget(self.dialog_button)
|
||||
|
||||
self.setLayout(layout)
|
||||
|
||||
def look_for_updates(self, filename=None):
|
||||
logger.info(f'Looking for updates, compare to file {filename}')
|
||||
# Download zsync file of latest Appimage, look for SHA-1 hash and compare with hash of AppImage
|
||||
is_updateble, m_time_file, m_time_zsync = self.updater.get_update_information(filename)
|
||||
|
||||
label_text = ''
|
||||
|
||||
if is_updateble is None:
|
||||
label_text += '<p>Could not determine if this version is newer, please update manually (if necessary).</p>'
|
||||
dialog_bttns = QtWidgets.QDialogButtonBox.Close
|
||||
elif is_updateble:
|
||||
label_text += '<p>Newer version available. Press Ok to download new version, Cancel to ignore.</p>'
|
||||
dialog_bttns = QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel
|
||||
else:
|
||||
label_text += '<p>Version may be already up-to-date.</p>'
|
||||
dialog_bttns = QtWidgets.QDialogButtonBox.Close
|
||||
|
||||
if m_time_zsync is None:
|
||||
label_text += '<p>Creation date of remote version is unknown.</p>'
|
||||
else:
|
||||
label_text += f'<p>Date of most recent AppImage: {m_time_zsync.strftime("%d %B %Y %H:%M")}</p>'
|
||||
|
||||
if m_time_file is None:
|
||||
label_text += 'No AppImage file found, press Ok to download latest version.'
|
||||
dialog_bttns = QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Close
|
||||
else:
|
||||
label_text += f'<p>Date of used AppImage: {m_time_file.strftime("%d %B %Y %H:%M")}</p>'
|
||||
|
||||
self.label.setText(label_text)
|
||||
self.dialog_button.setStandardButtons(dialog_bttns)
|
||||
|
||||
@QtCore.pyqtSlot()
|
||||
def update_appimage(self):
|
||||
if self._appfile is None:
|
||||
args = (self.updater.zsync_url,)
|
||||
else:
|
||||
# this breaks the download for some reason
|
||||
args = (self.updater.zsync_url, self._appfile)
|
||||
|
||||
self.dialog_button.setEnabled(False)
|
||||
|
||||
self.startDownload.emit(args)
|
||||
self.status.show()
|
||||
|
||||
@QtCore.pyqtSlot(int, str)
|
||||
def finish_update(self, retcode: int, file_loc: str):
|
||||
if retcode == 0:
|
||||
self.status.setText(f'Download complete.New AppImage lies in <p><em>{file_loc}</em>.</p>')
|
||||
else:
|
||||
self.status.setText(f'Download failed :( with return code {retcode}.')
|
||||
self.dialog_button.setStandardButtons(QtWidgets.QDialogButtonBox.Close)
|
||||
self.dialog_button.setEnabled(True)
|
||||
|
||||
def closeEvent(self, evt):
|
||||
self.thread.quit()
|
||||
self.thread.wait()
|
||||
|
||||
super().closeEvent(evt)
|
||||
|
||||
|
||||
class Downloader(QtCore.QObject):
|
||||
started = QtCore.pyqtSignal()
|
||||
finished = QtCore.pyqtSignal(int, str)
|
||||
progressChanged = QtCore.pyqtSignal(str)
|
||||
|
||||
@QtCore.pyqtSlot(tuple)
|
||||
def run_download(self, args: tuple[str]):
|
||||
status = 0
|
||||
appimage_location = args[0][:-6]
|
||||
logger.info(f'Download {appimage_location}')
|
||||
if len(args) == 2:
|
||||
new_file = Path(args[1])
|
||||
else:
|
||||
new_file = Path.home() / 'Downloads' / 'NMReval-latest-x86_64.AppImage'
|
||||
|
||||
if new_file.exists():
|
||||
os.rename(new_file, new_file.with_suffix('.AppImage.old'))
|
||||
|
||||
try:
|
||||
with urllib.request.urlopen(appimage_location) as response:
|
||||
with new_file.open('wb') as f:
|
||||
f.write(response.read())
|
||||
|
||||
new_file.chmod(0o755)
|
||||
except HTTPError as e:
|
||||
logger.exception(f'Download failed with {e}')
|
||||
status = 3
|
||||
except Exception as e:
|
||||
logger.exception(f'Download failed with {e.args}')
|
||||
status = 1
|
||||
|
||||
if status != 0:
|
||||
logger.warning('Download failed, restore previous AppImage')
|
||||
try:
|
||||
os.rename(new_file.with_suffix('.AppImage.old'), new_file)
|
||||
except FileNotFoundError:
|
||||
pass
|
||||
# zsync does not support https
|
||||
|
||||
self.finished.emit(status, str(new_file))
|
||||
|
||||
|
||||
class Updater:
|
||||
host = 'gitea.pkm.physik.tu-darmstadt.de/api/packages/IPKM/generic/NMReval/latest/'
|
||||
version = 'NMReval-latest-x86_64'
|
||||
|
||||
@property
|
||||
def zsync_url(self):
|
||||
return f'https://{Updater.host}/{Updater.version}.AppImage.zsync'
|
||||
|
||||
@staticmethod
|
||||
def get_zsync():
|
||||
url_zsync = f'https://{Updater.host}/{Updater.version}.AppImage.zsync'
|
||||
m_time_zsync = None
|
||||
checksum_zsync = None
|
||||
zsync_file = None
|
||||
filename = None
|
||||
try:
|
||||
with urllib.request.urlopen(url_zsync) as response:
|
||||
zsync_file = response.read()
|
||||
except HTTPError as e:
|
||||
logger.error(f'Request for zsync returned code {e}')
|
||||
except Exception as e:
|
||||
logger.exception(f'Download of zsync failed with exception {e.args}')
|
||||
|
||||
if zsync_file is not None:
|
||||
for line in zsync_file.split(b'\n'):
|
||||
try:
|
||||
kw, val = line.split(b': ')
|
||||
time_string = str(val, encoding='utf-8')
|
||||
time_format = '%a, %d %b %Y %H:%M:%S %z'
|
||||
if kw == b'MTime':
|
||||
try:
|
||||
m_time_zsync = datetime.strptime(time_string, time_format).astimezone(None)
|
||||
except ValueError:
|
||||
logger.warning(f'zsync time "{time_string}" does not match "{time_format}"')
|
||||
elif kw == b'SHA-1':
|
||||
checksum_zsync = str(val, encoding='utf-8')
|
||||
elif kw == b'Filename':
|
||||
filename = str(val, encoding='utf-8')
|
||||
|
||||
except ValueError:
|
||||
# stop when empty line is reached
|
||||
break
|
||||
|
||||
return m_time_zsync, checksum_zsync, filename
|
||||
|
||||
@staticmethod
|
||||
def get_appimage_info(filename: str):
|
||||
if filename is None:
|
||||
return None, None
|
||||
|
||||
if not exists(filename):
|
||||
return None, None
|
||||
|
||||
stat_mtime = stat(filename).st_mtime
|
||||
m_time_file = datetime.fromtimestamp(stat_mtime).replace(microsecond=0)
|
||||
with open(filename, 'rb') as f:
|
||||
checksum_file = hashlib.sha1(f.read()).hexdigest()
|
||||
if checksum_file is None:
|
||||
logger.warning('No checksum for AppImage calculated')
|
||||
|
||||
return m_time_file, checksum_file
|
||||
|
||||
@staticmethod
|
||||
def get_update_information(filename: str) -> tuple[(bool | None), datetime, datetime]:
|
||||
m_time_zsync, checksum_zsync, appname = Updater.get_zsync()
|
||||
m_time_file, checksum_file = Updater.get_appimage_info(filename)
|
||||
|
||||
logger.debug(f'zsync information {m_time_zsync}, {checksum_zsync}, {appname}')
|
||||
logger.debug(f'file information {m_time_file}, {checksum_file}')
|
||||
|
||||
if not ((checksum_file is not None) and (checksum_zsync is not None)):
|
||||
return None, m_time_file, m_time_zsync
|
||||
else:
|
||||
return checksum_file != checksum_zsync, m_time_file, m_time_zsync
|
||||
|
||||
Reference in New Issue
Block a user