archive.py

   1 from xml.dom import Node, minidom
   2 import re
   3
   4 import rox, os, sys, urlparse, tempfile, shutil, time, urllib
   5 from rox import g, tasks
   6 import gtk.glade
   7
   8 from zeroinstall.support import ro_rmtree
   9 from zeroinstall.injector import model
  10 from zeroinstall.zerostore import unpack, manifest, NotStored
  11
  12 from logging import warn
  13 import signing
  14 from xmltools import *
  15 import main
  16
  17 dotted_ints = '[0-9]+(.[0-9]+)*'
  18 version_regexp = '[^a-zA-Z0-9](%s)(-(pre|rc|post|)%s)*' % (dotted_ints, dotted_ints)
  19
  20 def get_combo_value(combo):
  21         i = combo.get_active()
  22         m = combo.get_model()
  23         return m[i][0]
  24
  25 watch = gtk.gdk.Cursor(gtk.gdk.WATCH)
  26
  27 def autopackage_get_details(package):
  28         size = None
  29         type = 'application/x-bzip-compressed-tar'
  30         for line in file(package):
  31                 if line.startswith('export dataSize=') or line.startswith('export data_size='):
  32                         size = os.path.getsize(package) - int(line.split('"', 2)[1])
  33                 elif line.startswith('compression=') and 'lzma' in line:
  34                         type = 'application/x-lzma-compressed-tar'
  35                 if line.startswith('## END OF STUB'): break
  36         if size is None:
  37                 raise Exception("Can't find payload in autopackage (missing 'dataSize')")
  38         return size, type
  39
  40 def try_parse_version(version_str):
  41         try:
  42                 return model.parse_version(version_str)
  43         except model.SafeException, ex:
  44                 warn("Bad version number '%s'", ex)
  45                 return None
  46
  47 class AddArchiveBox:
  48         def __init__(self, feed_editor, local_archive = None):
  49                 self.feed_editor = feed_editor
  50                 self.tmpdir = None
  51                 self.mime_type = self.start_offset = None
  52
  53                 widgets = gtk.glade.XML(main.gladefile, 'add_archive')
  54
  55                 tree = widgets.get_widget('extract_list')
  56                 model = g.TreeStore(str)
  57                 tree.set_model(model)
  58                 selection = tree.get_selection()
  59                 selection.set_mode(g.SELECTION_BROWSE)
  60
  61                 cell = g.CellRendererText()
  62                 col = g.TreeViewColumn('Extract', cell)
  63                 col.add_attribute(cell, 'text', 0)
  64                 tree.append_column(col)
  65
  66                 dialog = widgets.get_widget('add_archive')
  67
  68                 mime_type = widgets.get_widget('mime_type')
  69                 mime_type.set_active(0)
  70
  71                 def local_archive_changed(chooser):
  72                         model.clear()
  73                         path = chooser.get_filename()
  74                         widgets.get_widget('subdirectory_frame').set_sensitive(False)
  75                         self.destroy_tmp()
  76                         if not path: return
  77
  78                         if mime_type.get_active() == 0:
  79                                 type = None
  80                         else:
  81                                 type = mime_type.get_active_text()
  82
  83                         archive_url = widgets.get_widget('archive_url')
  84                         url = archive_url.get_text()
  85                         if not url:
  86                                 url = 'http://SITE/' + os.path.basename(path)
  87                                 archive_url.set_text(url)
  88
  89                         start_offset = 0
  90                         if not type:
  91                                 if url.endswith('.package'):
  92                                         type = 'Autopackage'
  93                                 else:
  94                                         type = unpack.type_from_url(url)
  95
  96                         if type == 'Autopackage':
  97                                 # Autopackage isn't a real type. Examine the .package file
  98                                 # and find out what it really is.
  99                                 start_offset, type = autopackage_get_details(path)
 100
 101                         self.tmpdir = tempfile.mkdtemp('-0publish-gui')
 102                         try:
 103                                 # Must be readable to helper process running as 'zeroinst'...
 104                                 old_umask = os.umask(0022)
 105                                 try:
 106                                         unpack_dir = os.path.join(self.tmpdir, 'unpacked')
 107                                         os.mkdir(unpack_dir)
 108
 109                                         dialog.window.set_cursor(watch)
 110                                         gtk.gdk.flush()
 111                                         try:
 112                                                 unpack.unpack_archive(url, file(path), unpack_dir,
 113                                                                       type = type, start_offset = start_offset)
 114                                                 manifest.fixup_permissions(unpack_dir)
 115                                         finally:
 116                                                 dialog.window.set_cursor(None)
 117                                 finally:
 118                                         os.umask(old_umask)
 119                         except:
 120                                 chooser.unselect_filename(path)
 121                                 self.destroy_tmp()
 122                                 raise
 123                         iter = model.append(None, ['Everything'])
 124                         items = os.listdir(unpack_dir)
 125                         for f in items:
 126                                 model.append(iter, [f])
 127                         tree.expand_all()
 128                         # Choose a sensible default
 129                         iter = model.get_iter_root()
 130                         if len(items) == 1 and \
 131                            os.path.isdir(os.path.join(unpack_dir, items[0])) and \
 132                            items[0] not in ('usr', 'opt', 'bin', 'etc', 'sbin', 'doc', 'var'):
 133                                 iter = model.iter_children(iter)
 134                         selection.select_iter(iter)
 135
 136                         self.mime_type = type
 137                         self.start_offset = start_offset
 138                         widgets.get_widget('subdirectory_frame').set_sensitive(True)
 139
 140                 local_archive_button = widgets.get_widget('local_archive')
 141                 local_archive_button.connect('selection-changed', local_archive_changed)
 142                 widgets.get_widget('subdirectory_frame').set_sensitive(False)
 143
 144                 def download(button):
 145                         url = widgets.get_widget('archive_url').get_text()
 146                         if not url:
 147                                 raise Exception("Enter a URL to download from!")
 148
 149                         chooser = g.FileChooserDialog('Save archive as...', dialog, g.FILE_CHOOSER_ACTION_SAVE)
 150                         chooser.set_current_name(os.path.basename(url))
 151                         chooser.add_button(g.STOCK_CANCEL, g.RESPONSE_CANCEL)
 152                         chooser.add_button(g.STOCK_SAVE, g.RESPONSE_OK)
 153                         chooser.set_default_response(g.RESPONSE_OK)
 154                         resp = chooser.run()
 155                         filename = chooser.get_filename()
 156                         chooser.destroy()
 157                         if resp != g.RESPONSE_OK:
 158                                 return
 159
 160                         DownloadBox(url, filename, local_archive_button, dialog)
 161
 162                 widgets.get_widget('download').connect('clicked', download)
 163
 164                 def resp(dialog, r):
 165                         if r == g.RESPONSE_OK:
 166                                 if not self.tmpdir:
 167                                         rox.alert("Archive not downloaded yet!")
 168                                         return
 169                                 unpack_dir = os.path.join(self.tmpdir, 'unpacked')
 170
 171                                 url = widgets.get_widget('archive_url').get_text()
 172                                 if urlparse.urlparse(url)[1] == '':
 173                                         raise Exception('Missing host name in URL "%s"' % url)
 174                                 if urlparse.urlparse(url)[2] == '':
 175                                         raise Exception('Missing resource part in URL "%s"' % url)
 176                                 local_archive = widgets.get_widget('local_archive').get_filename()
 177                                 if not local_archive:
 178                                         raise Exception('Please select a local file')
 179                                 if selection.iter_is_selected(model.get_iter_root()):
 180                                         root = unpack_dir
 181                                         extract = None
 182                                 else:
 183                                         _, iter = selection.get_selected()
 184                                         extract = model[iter][0]
 185                                         root = os.path.join(unpack_dir, extract)
 186
 187                                 size = os.path.getsize(local_archive)
 188                                 if self.start_offset:
 189                                         size -= self.start_offset
 190                                 self.create_archive_element(url, self.mime_type, root, extract, size,
 191                                                     self.start_offset)
 192                         self.destroy_tmp()
 193                         dialog.destroy()
 194
 195                 dialog.connect('response', resp)
 196
 197                 if local_archive:
 198                         local_archive_button.set_filename(local_archive)
 199                         initial_url = 'http://SITE/' + os.path.basename(local_archive)
 200                         widgets.get_widget('archive_url').set_text(initial_url)
 201
 202         def destroy_tmp(self):
 203                 if self.tmpdir:
 204                         ro_rmtree(self.tmpdir)
 205                         self.tmpdir = None
 206
 207         def create_archive_element(self, url, mime_type, root, extract, size, start_offset):
 208                 alg = manifest.get_algorithm('sha1new')
 209                 digest = alg.new_digest()
 210                 for line in alg.generate_manifest(root):
 211                         digest.update(line + '\n')
 212                 id = alg.getID(digest)
 213
 214                 # Add it to the cache if missing
 215                 # Helps with setting 'main' attribute later
 216                 try:
 217                         main.stores.lookup(id)
 218                 except NotStored:
 219                         main.stores.add_dir_to_cache(id, root)
 220
 221                 # Do we already have an implementation with this digest?
 222                 impl_element = self.feed_editor.find_implementation(id)
 223
 224                 if impl_element is None:
 225                         # No. Create a new implementation. Guess the details...
 226
 227                         leaf = url.split('/')[-1]
 228                         version = None
 229                         for m in re.finditer(version_regexp, leaf):
 230                                 match = m.group()[1:]
 231                                 if version is None or len(version) < len(match):
 232                                         version = match
 233
 234                         existing_versions = self.feed_editor.list_versions()
 235                         older_versions = []
 236                         if existing_versions and version:
 237                                 parsed_version = try_parse_version(version)
 238                                 if parsed_version:
 239                                         older_versions = [(v, elem) for v, elem in existing_versions if v < parsed_version]
 240
 241                         impl_element = self.feed_editor.doc.createElementNS(XMLNS_INTERFACE, 'implementation')
 242
 243                         if older_versions:
 244                                 # Try to add it just after the previous version's element in the XML document
 245                                 insert_after(impl_element, max(older_versions)[1])
 246                         elif existing_versions:
 247                                 # Else add it before the first
 248                                 insert_before(impl_element, min(existing_versions)[1])
 249                         else:
 250                                 # Put it in the root
 251                                 insert_element(impl_element, self.feed_editor.doc.documentElement)
 252
 253                         impl_element.setAttribute('id', id)
 254                         impl_element.setAttribute('released', time.strftime('%Y-%m-%d'))
 255                         if version: impl_element.setAttribute('version', version)
 256                         created_impl = True
 257                 else:
 258                         created_impl = False
 259
 260                 archive_element = create_element(impl_element, 'archive')
 261                 archive_element.setAttribute('size', str(size))
 262                 archive_element.setAttribute('href', url)
 263                 if extract: archive_element.setAttribute('extract', extract)
 264                 if mime_type: archive_element.setAttribute('type', mime_type)
 265                 if start_offset: archive_element.setAttribute('start-offset', str(start_offset))
 266
 267                 self.feed_editor.update_version_model()
 268
 269                 if created_impl:
 270                         self.feed_editor.edit_properties(element = impl_element)
 271
 272 class DownloadBox:
 273         def __init__(self, url, path, archive_button, parent):
 274                 widgets = gtk.glade.XML(main.gladefile, 'download')
 275                 gtk.gdk.flush()
 276
 277                 output = file(path, 'w')
 278
 279                 dialog = widgets.get_widget('download')
 280                 dialog.set_transient_for(parent)
 281                 progress = widgets.get_widget('progress')
 282
 283                 cancelled = tasks.Blocker()
 284                 def resp(box, resp):
 285                         cancelled.trigger()
 286                 dialog.connect('response', resp)
 287
 288                 def download():
 289                         stream = None
 290
 291                         def cleanup():
 292                                 dialog.destroy()
 293                                 if output:
 294                                         output.close()
 295                                 if stream:
 296                                         stream.close()
 297
 298                         try:
 299                                 # (urllib2 is buggy; no fileno)
 300                                 stream = urllib.urlopen(url)
 301                                 size = float(stream.info().get('Content-Length', None))
 302                                 got = 0
 303
 304                                 while True:
 305                                         yield signing.InputBlocker(stream), cancelled
 306                                         if cancelled.happened:
 307                                                 raise Exception("Download cancelled at user's request")
 308                                         data = os.read(stream.fileno(), 1024)
 309                                         if not data: break
 310                                         output.write(data)
 311                                         got += len(data)
 312
 313                                         if size:
 314                                                 progress.set_fraction(got / size)
 315                                         else:
 316                                                 progress.pulse()
 317                         except:
 318                                 # No finally in python 2.4
 319                                 cleanup()
 320                                 raise
 321                         else:
 322                                 cleanup()
 323                                 archive_button.set_filename(path)
 324
 325                 dialog.show()
 326                 tasks.Task(download())