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