qubx.vcheck

1 """ 2 Check over network for updates, invoked by qubx.cube.Cube (main window aka QubX) shortly after startup, and daily thereafter. 3 4 Copyright 2012-2013 Research Foundation State University of New York 5 This file is part of QUB Express. 6 7 QUB Express is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation, either version 3 of the License, or 10 (at your option) any later version. 11 12 QUB Express is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License, 18 named LICENSE.txt, in the QUB Express program directory. If not, see 19 <http://www.gnu.org/licenses/>. 20 21 """ 22 23 import cStringIO 24 import datetime 25 import errno 26 import gobject 27 import gtk 28 import os 29 import platform 30 import re 31 import shutil 32 import sys 33 import traceback 34 import uuid 35 import webbrowser 36 37 import qubx.data_types 38 import qubx.global_namespace 39 import qubx.GTK 40 import qubx.pyenv 41 import qubx.settings 42 import qubx.task 43 import qubx.util_types 44 45 from qubx.GTK import pack_item, pack_label, pack_button, pack_scrolled 46 from qubx.http_post import * 47

48 -def get_changes(key='qubx', guid='', m=''):

49 """Returns (changelog, version_str, download_url) of updates newer than QUBX_VERSION, 50 as requested from http://qub.mandelics.com/vcheck; returns (None, None, None) on failure.""" 51 os = platform.system().lower() 52 k = key 53 if 'linux' in os: 54 os = 'lin' 55 elif 'darwin' in os: 56 os = 'mac' 57 else: 58 os = 'win' 59 settings = qubx.settings.SettingsMgr['vcheck_client'].active 60 if not str(settings['u'].data): 61 settings['u'].data = 'qub.mandelics.com' 62 settings['p'].data = '/online/vcheck' 63 status, reason, data = post_multipart(str(settings['u'].data), str(settings['p'].data), 64 [('os', os), ('key', k), ('m', m), ('guid', guid), 65 ('version', qubx.global_namespace.QUBX_VERSION)], 66 []) 67 changes = get_tag(data, 'changes') 68 version = get_tag(data, 'version') 69 url = get_tag(data, 'url') 70 return (changes or None, version or None, url or None)

71

72 -def get_tag(xml, tagname):

73 """Returns the substring between desired start and end tags in a really simple xml document.""" 74 i0 = xml.find('<%s>' % tagname) 75 if i0 != -1: 76 i0 += len(tagname) + 2 77 i1 = xml.find('</%s>' % tagname) 78 if i1 != -1: 79 return xml[i0:i1].strip()

80

81 -def print_task_exc(task, typ, val, tb):

82 """Writes any version-checking exceptions to the console.""" 83 print 'in Task %s:' % task.label 84 traceback.print_exception(typ, val, tb)

85 86 WHEL = 'Invalid registration. Please subscribe on our web site.' 87

88 -class vcheck_client_task(qubx.task.Task):

89 """Checks for updates in a background thread, prompts the user."""

90 - def __init__(self, key='qubx', m=None, onreply=lambda changes, version, url: None):

91 """@param key: matches FileRec.key in qub download page, a.k.a qubx.global_namespace.QUBX_CODENAME""" 92 qubx.task.Task.__init__(self, 'Checking for updates') 93 self.OnException += print_task_exc 94 self.key = key 95 self.m = m or '' 96 self.onreply = onreply 97 settings = qubx.settings.SettingsMgr['vcheck_client'].active 98 self.last_check_version = str(settings['last_version'].data) 99 self.guid = str(settings['guid'].data) 100 if not self.guid: 101 settings['guid'].data = self.guid = str(uuid.uuid4())

102 - def run(self):

103 qubx.task.Tasks.add_task(self) 104 try: 105 changes, version, url = get_changes(key=self.key, guid=self.guid, m=self.m) 106 if changes is None: 107 return 108 if version == self.last_check_version: 109 return 110 if self.onreply: 111 gobject.idle_add(self.onreply, changes, version, url) 112 else: 113 gobject.idle_add(show_changes, changes, version, url) 114 except: 115 pass 116 qubx.task.Tasks.remove_task(self)

117

118 -def whois(m, elsie):

119 match = re.search(r"#(\d+)", m) 120 match or elsie(WHEL) 121 try: 122 g = int(match.group(1)) 123 v = ((g<=0) or ((g+9)%13)) and (g/(g>>32)) 124 except: 125 elsie(WHEL) 126 def onreply(c,v,u): 127 match = re.search(r"https://([^/]+)(.*)", u or '') 128 if match: 129 settings = qubx.settings.SettingsMgr['vcheck_client'].active 130 settings['u'].data = match.group(1) 131 settings['p'].data = match.group(2) 132 c and elsie(c)

133 vcheck_client_task(m=match.group(1), onreply=onreply).start() 134

135 -def show_changes(changes, version, url):

136 """Displays the list of updates returned by get_changes in a new window; offers a button to download the latest version.""" 137 qubx.settings.SettingsMgr['vcheck_client'].active['last_version'].data = version 138 QubX = qubx.global_namespace.QubX 139 w = gtk.Window(gtk.WINDOW_TOPLEVEL) 140 w.set_size_request(640, 480) 141 w.set_position(gtk.WIN_POS_CENTER) 142 v = gtk.VBox() 143 v.show() 144 w.add(v) 145 line = pack_item(gtk.HBox(), v) 146 pack_label('A new version of %s (%s) is available for download. Recent changes:' % (QubX.appname, version), line) 147 txt = gtk.TextView() 148 pack_scrolled(txt, v, expand=True) 149 txt.get_buffer().set_text(changes) 150 line = pack_item(gtk.HBox(), v) 151 pack_button('Download...', line, at_end=True, on_click=lambda btn: webbrowser.open(url)) 152 pack_button('Close', line, at_end=True, on_click=lambda btn: w.destroy()) 153 w.show()

154

Source Code for Module qubx.vcheck_client