| 1 | # -*- coding: utf-8 -*- |
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| 2 | # Copyright (C) 2008 Adriano Monteiro Marques |
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| 3 | # |
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| 4 | # Author: Francesco Piccinno <stack.box@gmail.com> |
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| 5 | # |
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| 6 | # This program is free software; you can redistribute it and/or modify |
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| 7 | # it under the terms of the GNU General Public License as published by |
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| 8 | # the Free Software Foundation; either version 2 of the License, or |
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| 9 | # (at your option) any later version. |
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| 10 | # |
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| 11 | # This program is distributed in the hope that it will be useful, |
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| 12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | # GNU General Public License for more details. |
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| 15 | # |
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| 16 | # You should have received a copy of the GNU General Public License |
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| 17 | # along with this program; if not, write to the Free Software |
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| 18 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 19 | |
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| 20 | import os |
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| 21 | |
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| 22 | try: |
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| 23 | from hashlib import md5 |
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| 24 | except ImportError: |
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| 25 | from md5 import md5 |
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| 26 | |
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| 27 | from threading import RLock |
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| 28 | from tempfile import mkstemp |
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| 29 | from xml.dom.minidom import parseString |
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| 30 | |
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| 31 | from PM.Core.I18N import _ |
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| 32 | from PM.Core.Logger import log |
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| 33 | from PM.Core.Const import PM_PLUGINS_TEMP_DIR |
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| 34 | |
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| 35 | from PM.Gui.Plugins.Network import * |
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| 36 | from PM.Gui.Plugins.Atoms import Version |
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| 37 | |
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| 38 | STATUS_IDLE = 0 |
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| 39 | |
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| 40 | LATEST_ERROR = 1 |
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| 41 | LATEST_GETTED = 2 |
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| 42 | LATEST_GETTING = 3 |
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| 43 | |
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| 44 | FILE_ERROR = 4 |
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| 45 | FILE_GETTED = 5 |
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| 46 | FILE_GETTING = 6 |
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| 47 | FILE_CHECKING = 7 |
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| 48 | |
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| 49 | class UpdateObject(object): |
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| 50 | def __init__(self, obj): |
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| 51 | self.buffer = [] |
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| 52 | |
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| 53 | self.status = STATUS_IDLE |
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| 54 | |
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| 55 | self.label = None |
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| 56 | self.fract = None |
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| 57 | |
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| 58 | self.url = None |
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| 59 | self.version = None |
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| 60 | self.hash = None |
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| 61 | |
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| 62 | self.object = obj |
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| 63 | |
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| 64 | self.fd = None |
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| 65 | |
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| 66 | self.size = None |
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| 67 | self.total = None |
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| 68 | |
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| 69 | # Simple lock for sync |
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| 70 | self.lock = RLock() |
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| 71 | |
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| 72 | def parse_latest_file(self): |
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| 73 | """ |
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| 74 | @return url, version or None, None on error |
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| 75 | """ |
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| 76 | |
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| 77 | try: |
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| 78 | doc = parseString("".join(self.buffer)) |
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| 79 | |
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| 80 | if doc.documentElement.tagName != 'UmitPluginUpdate': |
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| 81 | raise Exception("Not valid xml file.") |
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| 82 | |
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| 83 | url, version, hash = None, None, None |
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| 84 | |
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| 85 | for node in doc.documentElement.childNodes: |
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| 86 | if node.nodeName == 'update-uri': |
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| 87 | url = node.firstChild.data |
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| 88 | if node.nodeName == 'version': |
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| 89 | version = node.firstChild.data |
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| 90 | if node.nodeName == 'md5': |
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| 91 | hash = node.firstChild.data |
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| 92 | |
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| 93 | return url, version, hash |
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| 94 | except Exception, exc: |
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| 95 | log.warning("__parse_xml: %s" % exc) |
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| 96 | return None, None, None |
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| 97 | |
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| 98 | |
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| 99 | class UpdateEngine(object): |
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| 100 | """ |
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| 101 | A class that permits the updating stuff |
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| 102 | """ |
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| 103 | |
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| 104 | def __init__(self): |
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| 105 | "Initialize an UpdateEngine" |
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| 106 | self.update_lst = None |
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| 107 | self.static_lst = None |
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| 108 | self.updating = False |
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| 109 | |
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| 110 | def stop(self): |
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| 111 | "Mark as stopped" |
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| 112 | self.updating = False |
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| 113 | |
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| 114 | def start_update(self): |
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| 115 | """ |
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| 116 | Start the update phase (getting the latest.xml files). |
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| 117 | You have to set the list first. |
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| 118 | Do nothing if already started. |
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| 119 | |
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| 120 | Remember to call stop on finish. |
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| 121 | """ |
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| 122 | |
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| 123 | if not self.updating: |
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| 124 | |
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| 125 | for obj in self.update_lst: |
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| 126 | obj.status = LATEST_GETTING |
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| 127 | |
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| 128 | self.__process_next() |
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| 129 | |
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| 130 | self.updating = True |
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| 131 | |
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| 132 | def start_download(self): |
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| 133 | """ |
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| 134 | Start the download phas (getting the real files) |
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| 135 | You have to set the list first. |
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| 136 | Do nothing if already started. |
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| 137 | |
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| 138 | Remember to call stop on finish. |
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| 139 | """ |
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| 140 | |
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| 141 | if not self.updating: |
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| 142 | |
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| 143 | for obj in self.update_lst: |
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| 144 | obj.status = FILE_GETTING |
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| 145 | |
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| 146 | self.__process_next_download() |
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| 147 | |
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| 148 | self.updating = True |
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| 149 | |
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| 150 | def __process_next_download(self): |
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| 151 | """ |
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| 152 | Process the next avaiable download in the list |
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| 153 | """ |
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| 154 | |
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| 155 | if not self.update_lst: |
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| 156 | return |
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| 157 | |
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| 158 | obj = self.update_lst.pop(0) |
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| 159 | |
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| 160 | try: |
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| 161 | filename = os.path.basename(obj.object.reader.get_path()) |
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| 162 | |
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| 163 | obj.fd = open(mkstemp(".part", filename, \ |
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| 164 | PM_PLUGINS_TEMP_DIR)[1], "wb+") |
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| 165 | |
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| 166 | Network.get_url(obj.url, self.__process_plugin, obj) |
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| 167 | except Exception, err: |
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| 168 | obj.status = FILE_ERROR |
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| 169 | obj.label = err |
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| 170 | obj.fract = None |
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| 171 | |
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| 172 | self.__process_next_download() |
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| 173 | |
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| 174 | def __process_plugin(self, file, data, exc, obj): |
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| 175 | """ |
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| 176 | Process callback for plugin data |
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| 177 | """ |
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| 178 | |
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| 179 | if isinstance(exc, ErrorNetException): |
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| 180 | obj.lock.acquire() |
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| 181 | |
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| 182 | try: |
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| 183 | obj.status = FILE_ERROR |
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| 184 | obj.label = exc.reason |
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| 185 | obj.fract = 1 |
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| 186 | |
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| 187 | self.__process_next_download() |
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| 188 | return |
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| 189 | finally: |
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| 190 | obj.lock.release() |
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| 191 | |
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| 192 | elif isinstance(exc, StopNetException): |
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| 193 | if obj.hash: |
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| 194 | |
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| 195 | data = "" |
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| 196 | obj.lock.acquire() |
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| 197 | |
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| 198 | try: |
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| 199 | obj.label = _('Checking validity ...') |
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| 200 | obj.status = FILE_CHECKING |
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| 201 | |
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| 202 | obj.fd.flush() |
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| 203 | obj.fd.seek(0) |
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| 204 | |
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| 205 | data = obj.fd.read() |
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| 206 | finally: |
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| 207 | obj.lock.release() |
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| 208 | |
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| 209 | # Not locked it could freeze the ui |
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| 210 | hasher = md5(data) |
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| 211 | |
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| 212 | obj.lock.acquire() |
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| 213 | |
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| 214 | try: |
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| 215 | if hasher.hexdigest() == obj.hash: |
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| 216 | obj.label = _('Updated. Restart to take effect') |
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| 217 | obj.status = FILE_GETTED |
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| 218 | else: |
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| 219 | obj.label = _('Corrupted file.') |
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| 220 | obj.status = FILE_ERROR |
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| 221 | finally: |
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| 222 | obj.lock.release() |
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| 223 | |
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| 224 | else: |
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| 225 | obj.lock.acquire() |
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| 226 | |
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| 227 | try: |
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| 228 | obj.label = _('Updated. Restart to take effect') |
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| 229 | obj.status = FILE_GETTED |
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| 230 | finally: |
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| 231 | obj.lock.release() |
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| 232 | |
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| 233 | obj.lock.acquire() |
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| 234 | |
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| 235 | try: |
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| 236 | obj.fd.close() |
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| 237 | obj.fract = 1 |
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| 238 | finally: |
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| 239 | obj.lock.release() |
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| 240 | |
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| 241 | try: |
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| 242 | if obj.status == FILE_ERROR: |
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| 243 | os.remove(obj.fd.name) |
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| 244 | else: |
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| 245 | os.rename(obj.fd.name, \ |
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| 246 | obj.fd.name[:obj.fd.name.index(".ump") + 4]) |
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| 247 | except Exception: |
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| 248 | # TODO: add more sensed control? |
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| 249 | pass |
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| 250 | |
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| 251 | self.__process_next() |
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| 252 | |
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| 253 | elif isinstance(exc, StartNetException): |
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| 254 | obj.lock.acquire() |
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| 255 | |
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| 256 | try: |
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| 257 | try: |
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| 258 | obj.status = FILE_GETTING |
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| 259 | obj.size = 0 |
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| 260 | obj.total = int(file.info()['Content-Length']) |
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| 261 | except: |
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| 262 | pass |
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| 263 | |
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| 264 | obj.label = _('Downloading ...') |
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| 265 | finally: |
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| 266 | obj.lock.release() |
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| 267 | |
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| 268 | elif not exc: |
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| 269 | if obj.total: |
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| 270 | obj.size += len(data) |
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| 271 | obj.fract = float(obj.size) / float(obj.total) |
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| 272 | obj.fd.write(data) |
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| 273 | |
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| 274 | def __process_next(self): |
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| 275 | """ |
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| 276 | Forward to the next update (download the next latest.xml) |
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| 277 | """ |
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| 278 | |
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| 279 | if not self.update_lst: |
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| 280 | return |
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| 281 | |
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| 282 | obj = self.update_lst.pop(0) |
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| 283 | Network.get_url("%s/latest.xml" % obj.object.reader.update, \ |
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| 284 | self.__process_manifest, obj) |
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| 285 | |
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| 286 | def __process_manifest(self, file, data, exc, obj): |
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| 287 | """ |
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| 288 | Callback to parse latest.xml file containing meta information about |
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| 289 | the avaiable update. |
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| 290 | """ |
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| 291 | |
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| 292 | if isinstance(exc, ErrorNetException): |
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| 293 | obj.lock.acquire() |
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| 294 | |
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| 295 | try: |
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| 296 | obj.status = LATEST_ERROR |
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| 297 | obj.label = _('Cannot find newer version (%s)') % exc.reason |
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| 298 | |
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| 299 | self.__process_next() |
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| 300 | return |
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| 301 | finally: |
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| 302 | obj.lock.release() |
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| 303 | |
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| 304 | elif isinstance(exc, StopNetException): |
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| 305 | url, version, hash = obj.parse_latest_file() |
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| 306 | |
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| 307 | new_v = Version(version) |
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| 308 | cur_v = Version(obj.object.reader.version) |
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| 309 | |
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| 310 | type = -1 # -1 no action / 0 update / 1 downgrade |
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| 311 | |
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| 312 | if new_v > cur_v: |
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| 313 | type = 0 |
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| 314 | elif cur_v < new_v: |
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| 315 | type = 1 |
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| 316 | |
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| 317 | obj.lock.acquire() |
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| 318 | |
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| 319 | try: |
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| 320 | if url and version and type >= 0: |
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| 321 | |
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| 322 | # We check if the path is the plugins in config_dir |
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| 323 | |
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| 324 | plug_dir = os.path.join(Path.config_dir, 'plugins') |
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| 325 | |
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| 326 | if os.path.dirname(obj.object.reader.get_path()) != plug_dir and \ |
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| 327 | os.access(plug_dir, os.O_RDWR): |
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| 328 | |
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| 329 | obj.status = LATEST_ERROR |
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| 330 | |
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| 331 | if not type: |
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| 332 | obj.label = _('Version %s avaiable but need manual update.') % version |
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| 333 | else: |
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| 334 | obj.label = _('Version %s avaiable but need manual downgrade.') % version |
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| 335 | else: |
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| 336 | obj.status = LATEST_GETTED |
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| 337 | obj.label = _('Version %s avaiable.') % version |
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| 338 | |
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| 339 | obj.version = version |
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| 340 | obj.url = url |
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| 341 | obj.hash = hash |
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| 342 | else: |
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| 343 | obj.status = LATEST_ERROR |
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| 344 | |
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| 345 | if type < 0: |
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| 346 | obj.label = _('Unable to parse latest.xml') |
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| 347 | else: |
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| 348 | obj.label = _('No applicable updates found') |
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| 349 | |
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| 350 | self.__process_next() |
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| 351 | finally: |
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| 352 | obj.lock.release() |
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| 353 | |
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| 354 | elif not exc: |
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| 355 | obj.buffer.append(data) |
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| 356 | |
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| 357 | def get_list(self): |
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| 358 | "Getter for list" |
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| 359 | return self.static_lst |
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| 360 | |
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| 361 | def set_list(self, value): |
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| 362 | "Setter for list" |
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| 363 | lst = [] |
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| 364 | |
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| 365 | for iter in value: |
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| 366 | if isinstance(iter, UpdateObject): |
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| 367 | lst.append(iter) |
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| 368 | else: |
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| 369 | lst.append(UpdateObject(iter)) |
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| 370 | |
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| 371 | self.update_lst = lst |
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| 372 | self.static_lst = tuple(self.update_lst) |
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| 373 | |
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| 374 | list = property(get_list, set_list) |
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