src/allmydata/webish.py

   1
   2 from twisted.application import service, strports
   3 from twisted.web import static, resource, server, html
   4 from twisted.python import util, log
   5 from nevow import inevow, rend, loaders, appserver, url, tags as T
   6 from allmydata.util import idlib
   7 from allmydata.interfaces import IDownloadTarget#, IDownloader
   8 from allmydata import upload
   9 from zope.interface import implements, Interface
  10 import urllib
  11 from formless import annotate, webform
  12
  13 def getxmlfile(name):
  14     return loaders.xmlfile(util.sibpath(__file__, "web/%s" % name))
  15
  16 class IClient(Interface):
  17     pass
  18
  19 def get_downloader_service(ctx):
  20     return IClient(ctx).getServiceNamed("downloader")
  21 def get_uploader_service(ctx):
  22     return IClient(ctx).getServiceNamed("uploader")
  23 def get_vdrive_service(ctx):
  24     return IClient(ctx).getServiceNamed("vdrive")
  25
  26 class Welcome(rend.Page):
  27     addSlash = True
  28     docFactory = getxmlfile("welcome.xhtml")
  29
  30     def data_queen_pburl(self, ctx, data):
  31         return IClient(ctx).introducer_furl
  32     def data_connected_to_queen(self, ctx, data):
  33         if IClient(ctx).connected_to_vdrive:
  34             return "yes"
  35         return "no"
  36     def data_num_peers(self, ctx, data):
  37         #client = inevow.ISite(ctx)._client
  38         client = IClient(ctx)
  39         return len(client.get_all_peerids())
  40     def data_num_connected_peers(self, ctx, data):
  41         return len(IClient(ctx).get_all_peerids())
  42
  43     def data_peers(self, ctx, data):
  44         d = []
  45         client = IClient(ctx)
  46         for nodeid in sorted(client.get_all_peerids()):
  47             row = (idlib.b2a(nodeid),)
  48             d.append(row)
  49         return d
  50
  51     def render_row(self, ctx, data):
  52         (nodeid_a,) = data
  53         ctx.fillSlots("peerid", nodeid_a)
  54         return ctx.tag
  55
  56     # this is a form where users can download files by URI
  57
  58     def bind_download(self, ctx):
  59         uriarg = annotate.Argument("uri",
  60                                    annotate.String("URI of file to download: "))
  61         namearg = annotate.Argument("filename",
  62                                     annotate.String("Filename to download as: "))
  63         ctxarg = annotate.Argument("ctx", annotate.Context())
  64         meth = annotate.Method(arguments=[uriarg, namearg, ctxarg],
  65                                label="Download File by URI")
  66         # buttons always use value=data.label
  67         # MethodBindingRenderer uses value=(data.action or data.label)
  68         return annotate.MethodBinding("download", meth, action="Download")
  69
  70     def download(self, uri, filename, ctx):
  71         log.msg("webish downloading URI")
  72         target = url.here.sibling("download_uri").add("uri", uri)
  73         if filename:
  74             target = target.add("filename", filename)
  75         return target
  76
  77     def render_forms(self, ctx, data):
  78         return webform.renderForms()
  79
  80
  81 class Directory(rend.Page):
  82     addSlash = True
  83     docFactory = getxmlfile("directory.xhtml")
  84
  85     def __init__(self, dirnode, dirname):
  86         self._dirnode = dirnode
  87         self._dirname = dirname
  88
  89     def childFactory(self, ctx, name):
  90         if name.startswith("freeform"): # ick
  91             return None
  92         if self._dirname == "/":
  93             dirname = "/" + name
  94         else:
  95             dirname = self._dirname + "/" + name
  96         d = self._dirnode.callRemote("get", name)
  97         def _got_child(res):
  98             if isinstance(res, str):
  99                 dl = get_downloader_service(ctx)
 100                 return Downloader(dl, name, res)
 101             return Directory(res, dirname)
 102         d.addCallback(_got_child)
 103         return d
 104
 105     def render_title(self, ctx, data):
 106         return ctx.tag["Directory of '%s':" % self._dirname]
 107
 108     def render_header(self, ctx, data):
 109         return "Directory of '%s':" % self._dirname
 110
 111     def data_children(self, ctx, data):
 112         d = self._dirnode.callRemote("list")
 113         return d
 114
 115     def render_row(self, ctx, data):
 116         name, target = data
 117         if isinstance(target, str):
 118             # file
 119             dlurl = urllib.quote(name)
 120             ctx.fillSlots("filename",
 121                           T.a(href=dlurl)[html.escape(name)])
 122             ctx.fillSlots("type", "FILE")
 123             uri = target
 124             dl_uri_url = url.root.child("download_uri").child(uri)
 125             # add a filename= query argument to give it a Content-Type
 126             dl_uri_url = dl_uri_url.add("filename", name)
 127             ctx.fillSlots("uri", T.a(href=dl_uri_url)[html.escape(uri)])
 128
 129             # this creates a button which will cause our child__delete method
 130             # to be invoked, which deletes the file and then redirects the
 131             # browser back to this directory
 132             del_url = url.here.child("_delete")
 133             #del_url = del_url.add("uri", target)
 134             del_url = del_url.add("name", name)
 135             delete = T.form(action=del_url, method="post")[
 136                 T.input(type='submit', value='del', name="del"),
 137                 ]
 138             ctx.fillSlots("delete", delete)
 139         else:
 140             # directory
 141             subdir_url = urllib.quote(name)
 142             ctx.fillSlots("filename",
 143                           T.a(href=subdir_url)[html.escape(name)])
 144             ctx.fillSlots("type", "DIR")
 145             ctx.fillSlots("uri", "-")
 146             ctx.fillSlots("delete", "-")
 147         return ctx.tag
 148
 149     def render_forms(self, ctx, data):
 150         return webform.renderForms()
 151
 152     def bind_upload(self, ctx):
 153         """upload1"""
 154         # Note: this comment is no longer accurate, as it reflects the older
 155         # (apparently deprecated) formless.autocallable /
 156         # annotate.TypedInterface approach.
 157
 158         # Each method gets a box. The string in the autocallable(action=)
 159         # argument is put on the border of the box, as well as in the submit
 160         # button. The top-most contents of the box are the method's
 161         # docstring, if any. Each row contains a string for the argument
 162         # followed by the argument's input box. If you do not provide an
 163         # action= argument to autocallable, the method name is capitalized
 164         # and used instead.
 165         up = annotate.FileUpload(label="Choose a file to upload: ",
 166                                  required=True,
 167                                  requiredFailMessage="Do iT!")
 168         contentsarg = annotate.Argument("contents", up)
 169
 170         ctxarg = annotate.Argument("ctx", annotate.Context())
 171         meth = annotate.Method(arguments=[contentsarg, ctxarg],
 172                                label="Upload File to this directory")
 173         return annotate.MethodBinding("upload", meth, action="Upload")
 174
 175     def upload(self, contents, ctx):
 176         # contents is a cgi.FieldStorage instance
 177         log.msg("starting webish upload")
 178
 179         uploader = get_uploader_service(ctx)
 180         d = uploader.upload(upload.Data(contents.value))
 181         name = contents.filename
 182         d.addCallback(lambda vid:
 183                       self._dirnode.callRemote("add_file", name, vid))
 184         def _done(res):
 185             log.msg("webish upload complete")
 186             return res
 187         d.addCallback(_done)
 188         return d
 189         return url.here.add("results",
 190                             "upload of '%s' complete!" % contents.filename)
 191
 192     def bind_mkdir(self, ctx):
 193         """Make new directory 1"""
 194         namearg = annotate.Argument("name",
 195                                     annotate.String("New directory name: "))
 196         meth = annotate.Method(arguments=[namearg], label="Make New Subdirectory")
 197         return annotate.MethodBinding("mkdir", meth, action="Create Directory")
 198
 199     def mkdir(self, name):
 200         """mkdir2"""
 201         log.msg("making new webish directory")
 202         d = self._dirnode.callRemote("add_directory", name)
 203         def _done(res):
 204             log.msg("webish mkdir complete")
 205             return res
 206         d.addCallback(_done)
 207         return d
 208
 209     def child__delete(self, ctx):
 210         # perform the delete, then redirect back to the directory page
 211         args = inevow.IRequest(ctx).args
 212         vdrive = get_vdrive_service(ctx)
 213         d = vdrive.remove(self._dirnode, args["name"][0])
 214         def _deleted(res):
 215             return url.here.up()
 216         d.addCallback(_deleted)
 217         return d
 218
 219 class WebDownloadTarget:
 220     implements(IDownloadTarget)
 221     def __init__(self, req):
 222         self._req = req
 223     def open(self):
 224         pass
 225     def write(self, data):
 226         self._req.write(data)
 227     def close(self):
 228         self._req.finish()
 229     def fail(self):
 230         self._req.finish()
 231     def register_canceller(self, cb):
 232         pass
 233     def finish(self):
 234         pass
 235
 236 class TypedFile(static.File):
 237     # serve data from a named file, but using a Content-Type derived from a
 238     # different filename
 239     isLeaf = True
 240     def __init__(self, path, requested_filename):
 241         static.File.__init__(self, path)
 242         gte = static.getTypeAndEncoding
 243         self.type, self.encoding = gte(requested_filename,
 244                                        self.contentTypes,
 245                                        self.contentEncodings,
 246                                        self.defaultType)
 247
 248 class Downloader(resource.Resource):
 249     def __init__(self, downloader, name, uri):
 250         self._downloader = downloader
 251         self._name = name
 252         self._uri = uri
 253
 254     def render(self, ctx):
 255         req = inevow.IRequest(ctx)
 256         gte = static.getTypeAndEncoding
 257         type, encoding = gte(self._name,
 258                              static.File.contentTypes,
 259                              static.File.contentEncodings,
 260                              defaultType="text/plain")
 261         req.setHeader("content-type", type)
 262         if encoding:
 263             req.setHeader('content-encoding', encoding)
 264
 265         t = WebDownloadTarget(req)
 266         #dl = IDownloader(ctx)
 267         dl = self._downloader
 268         dl.download(self._uri, t)
 269         return server.NOT_DONE_YET
 270
 271
 272
 273 class Root(rend.Page):
 274     def locateChild(self, ctx, segments):
 275         if segments[0] == "download_uri":
 276             req = inevow.IRequest(ctx)
 277             dl = get_downloader_service(ctx)
 278             filename = "unknown_filename"
 279             if "filename" in req.args:
 280                 filename = req.args["filename"][0]
 281             if len(segments) > 1:
 282                 # http://host/download_uri/URIGOESHERE
 283                 uri = segments[1]
 284             elif "uri" in req.args:
 285                 # http://host/download_uri?uri=URIGOESHERE
 286                 uri = req.args["uri"][0]
 287             else:
 288                 return rend.NotFound
 289             child = Downloader(dl, filename, uri)
 290             return child, ()
 291         return rend.Page.locateChild(self, ctx, segments)
 292
 293     child_webform_css = webform.defaultCSS
 294
 295     child_welcome = Welcome()
 296
 297
 298 class WebishServer(service.MultiService):
 299     name = "webish"
 300
 301     def __init__(self, webport):
 302         service.MultiService.__init__(self)
 303         self.root = Root()
 304         placeholder = static.Data("sorry, still initializing", "text/plain")
 305         self.root.putChild("vdrive", placeholder)
 306         self.root.putChild("", url.here.child("welcome"))#Welcome())
 307
 308         self.site = site = appserver.NevowSite(self.root)
 309         s = strports.service(webport, site)
 310         s.setServiceParent(self)
 311         self.listener = s # stash it so the tests can query for the portnum
 312
 313     def startService(self):
 314         service.MultiService.startService(self)
 315         # to make various services available to render_* methods, we stash a
 316         # reference to the client on the NevowSite. This will be available by
 317         # adapting the 'context' argument to a special marker interface named
 318         # IClient.
 319         self.site.remember(self.parent, IClient)
 320         # I thought you could do the same with an existing interface, but
 321         # apparently 'ISite' does not exist
 322         #self.site._client = self.parent
 323
 324     def set_root_dirnode(self, dirnode):
 325         self.root.putChild("vdrive", Directory(dirnode, "/"))
 326         # I tried doing it this way and for some reason it didn't seem to work
 327         #print "REMEMBERING", self.site, dl, IDownloader
 328         #self.site.remember(dl, IDownloader)
 329