plugin.py

   1 import os
   2 import shutil
   3 import random
   4 import threading
   5 import urllib
   6 from urlparse import urlparse
   7
   8 if os.path.sep == '/':
   9     quote = urllib.quote
  10     unquote = urllib.unquote_plus
  11 else:
  12     quote = lambda x: urllib.quote(x.replace(os.path.sep, '/'))
  13     unquote = lambda x: urllib.unquote_plus(x).replace('/', os.path.sep)
  14
  15 class Error:
  16     CONTENT_TYPE = 'text/html'
  17
  18 def GetPlugin(name):
  19     try:
  20         module_name = '.'.join(['plugins', name, name])
  21         module = __import__(module_name, globals(), locals(), name)
  22         plugin = getattr(module, module.CLASS_NAME)()
  23         return plugin
  24     except ImportError:
  25         print 'Error no', name, 'plugin exists. Check the type ' \
  26         'setting for your share.'
  27         return Error
  28
  29 class Plugin(object):
  30
  31     random_lock = threading.Lock()
  32
  33     CONTENT_TYPE = ''
  34
  35     def __new__(cls, *args, **kwds):
  36         it = cls.__dict__.get('__it__')
  37         if it is not None:
  38             return it
  39         cls.__it__ = it = object.__new__(cls)
  40         it.init(*args, **kwds)
  41         return it
  42
  43     def init(self):
  44         pass
  45
  46     def send_file(self, handler, container, name):
  47         o = urlparse("http://fake.host" + handler.path)
  48         path = unquote(o[2])
  49         handler.send_response(200)
  50         handler.end_headers()
  51         f = open(container['path'] + path[len(name) + 1:], 'rb')
  52         shutil.copyfileobj(f, handler.wfile)
  53         f.close()
  54
  55     def get_local_base_path(self, handler, query):
  56
  57         subcname = query['Container'][0]
  58         container = handler.server.containers[subcname.split('/')[0]]
  59
  60         return os.path.normpath(container['path'])
  61
  62     def get_local_path(self, handler, query):
  63
  64         subcname = query['Container'][0]
  65         container = handler.server.containers[subcname.split('/')[0]]
  66
  67         path = os.path.normpath(container['path'])
  68         for folder in subcname.split('/')[1:]:
  69             if folder == '..':
  70                 return False
  71             path = os.path.join(path, folder)
  72         return path
  73
  74     def item_count(self, handler, query, cname, files, last_start=0):
  75         """Return only the desired portion of the list, as specified by
  76            ItemCount, AnchorItem and AnchorOffset. 'files' is either a
  77            list of strings, OR a list of objects with a 'name' attribute.
  78         """
  79         totalFiles = len(files)
  80         index = 0
  81
  82         if totalFiles and 'ItemCount' in query:
  83             count = int(query['ItemCount'][0])
  84
  85             if 'AnchorItem' in query:
  86                 bs = '/TiVoConnect?Command=QueryContainer&Container='
  87                 local_base_path = self.get_local_base_path(handler, query)
  88
  89                 anchor = query['AnchorItem'][0]
  90                 if anchor.startswith(bs):
  91                     anchor = anchor.replace(bs, '/', 1)
  92                 anchor = unquote(anchor)
  93                 anchor = anchor.replace(os.path.sep + cname, local_base_path, 1)
  94                 if not '://' in anchor:
  95                     anchor = os.path.normpath(anchor)
  96
  97                 if type(files[0]) == str:
  98                     filenames = files
  99                 else:
 100                     filenames = [x.name for x in files]
 101                 try:
 102                     index = filenames.index(anchor, last_start)
 103                 except ValueError:
 104                     if last_start:
 105                         try:
 106                             index = filenames.index(anchor, 0, last_start)
 107                         except ValueError:
 108                             print 'Anchor not found:', anchor
 109                     else:
 110                         print 'Anchor not found:', anchor  # just use index = 0
 111
 112                 if count > 0:
 113                     index += 1
 114
 115                 if 'AnchorOffset' in query:
 116                     index += int(query['AnchorOffset'][0])
 117
 118                 #foward count
 119                 if count >= 0:
 120                     files = files[index:index + count]
 121                 #backwards count
 122                 else:
 123                     if index + count < 0:
 124                         count = -index
 125                     files = files[index + count:index]
 126                     index += count
 127
 128             else:  # No AnchorItem
 129
 130                 if count >= 0:
 131                     files = files[:count]
 132                 else:
 133                     index = count % len(files)
 134                     files = files[count:]
 135
 136         return files, totalFiles, index
 137
 138     def get_files(self, handler, query, filterFunction=None):
 139
 140         def build_recursive_list(path, recurse=True):
 141             files = []
 142             try:
 143                 for f in os.listdir(path):
 144                     if f.startswith('.'):
 145                         continue
 146                     f = os.path.join(path, f)
 147                     if recurse and os.path.isdir(f):
 148                         files.extend(build_recursive_list(f))
 149                     else:
 150                        if not filterFunction or filterFunction(f, file_type):
 151                            files.append(f)
 152             except:
 153                 pass
 154             return files
 155
 156         subcname = query['Container'][0]
 157         cname = subcname.split('/')[0]
 158         path = self.get_local_path(handler, query)
 159
 160         file_type = query.get('Filter', [''])[0]
 161
 162         recurse = query.get('Recurse', ['No'])[0] == 'Yes'
 163         files = build_recursive_list(path, recurse)
 164
 165         totalFiles = len(files)
 166
 167         def dir_sort(x, y):
 168             xdir = os.path.isdir(os.path.join(path, x))
 169             ydir = os.path.isdir(os.path.join(path, y))
 170
 171             if xdir == ydir:
 172                 return name_sort(x, y)
 173             else:
 174                 return ydir - xdir
 175
 176         def name_sort(x, y):
 177             return cmp(x, y)
 178
 179         def date_sort(x, y):
 180             return cmp(os.stat(y).st_mtime, os.stat(x).st_mtime)
 181
 182         if query.get('SortOrder', ['Normal'])[0] == 'Random':
 183             seed = query.get('RandomSeed', ['1'])[0]
 184             self.random_lock.acquire()
 185             random.seed(seed)
 186             random.shuffle(files)
 187             self.random_lock.release()
 188         elif query.get('SortOrder', ['Normal'])[0] == '!CaptureDate':
 189             files.sort(date_sort)
 190         else:
 191             files.sort(dir_sort)
 192
 193         # Trim the list
 194         return self.item_count(handler, query, cname, files)