Scripts to download files from google storage based on sha1 sums

third_party/gsutil/gslib/commands/setcors.py

+# Copyright 2012 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from xml.dom.minidom import parseString
+import xml.sax.xmlreader
+from boto import handler
+from boto.gs.cors import Cors
+from gslib.command import Command
+from gslib.command import COMMAND_NAME
+from gslib.command import COMMAND_NAME_ALIASES
+from gslib.command import CONFIG_REQUIRED
+from gslib.command import FILE_URIS_OK
+from gslib.command import MAX_ARGS
+from gslib.command import MIN_ARGS
+from gslib.command import PROVIDER_URIS_OK
+from gslib.command import SUPPORTED_SUB_ARGS
+from gslib.command import URIS_START_ARG
+from gslib.exception import CommandException
+from gslib.help_provider import HELP_NAME
+from gslib.help_provider import HELP_NAME_ALIASES
+from gslib.help_provider import HELP_ONE_LINE_SUMMARY
+from gslib.help_provider import HELP_TEXT
+from gslib.help_provider import HelpType
+from gslib.help_provider import HELP_TYPE
+from gslib.util import NO_MAX
+
+_detailed_help_text = ("""
+<B>SYNOPSIS</B>
+  gsutil setcors cors-xml-file uri...
+
+
+<B>DESCRIPTION</B>
+  Sets the Cross-Origin Resource Sharing (CORS) configuration on one or more
+  buckets. This command is supported for buckets only, not objects. The
+  cors-xml-file specified on the command line should be a path to a local
+  file containing an XML document with the following structure:
+
+  <?xml version="1.0" ?>
+  <CorsConfig>
+      <Cors>
+          <Origins>
+              <Origin>origin1.example.com</Origin>
+          </Origins>
+          <Methods>
+              <Method>GET</Method>
+          </Methods>
+          <ResponseHeaders>
+              <ResponseHeader>Content-Type</ResponseHeader>
+          </ResponseHeaders>
+      </Cors>
+  </CorsConfig>
+
+  The above XML document explicitly allows cross-origin GET requests from
+  origin1.example.com and may include the Content-Type response header.
+
+  For more info about CORS, see http://www.w3.org/TR/cors/.
+""")
+
+class SetCorsCommand(Command):
+  """Implementation of gsutil setcors command."""
+
+  # Command specification (processed by parent class).
+  command_spec = {
+    # Name of command.
+    COMMAND_NAME : 'setcors',
+    # List of command name aliases.
+    COMMAND_NAME_ALIASES : [],
+    # Min number of args required by this command.
+    MIN_ARGS : 2,
+    # Max number of args required by this command, or NO_MAX.
+    MAX_ARGS : NO_MAX,
+    # Getopt-style string specifying acceptable sub args.
+    SUPPORTED_SUB_ARGS : '',
+    # True if file URIs acceptable for this command.
+    FILE_URIS_OK : False,
+    # True if provider-only URIs acceptable for this command.
+    PROVIDER_URIS_OK : False,
+    # Index in args of first URI arg.
+    URIS_START_ARG : 1,
+    # True if must configure gsutil before running command.
+    CONFIG_REQUIRED : True,
+  }
+  help_spec = {
+    # Name of command or auxiliary help info for which this help applies.
+    HELP_NAME : 'setcors',
+    # List of help name aliases.
+    HELP_NAME_ALIASES : ['cors', 'cross-origin'],
+    # Type of help)
+    HELP_TYPE : HelpType.COMMAND_HELP,
+    # One line summary of this help.
+    HELP_ONE_LINE_SUMMARY : 'Set a CORS XML document for one or more buckets',
+    # The full help text.
+    HELP_TEXT : _detailed_help_text,
+  }
+
+  # Command entry point.
+  def RunCommand(self):
+    cors_arg = self.args[0]
+    uri_args = self.args[1:]
+    # Disallow multi-provider setcors requests.
+    storage_uri = self.UrisAreForSingleProvider(uri_args)
+    if not storage_uri:
+      raise CommandException('"%s" command spanning providers not allowed.' %
+                             self.command_name)
+
+    # Open, read and parse file containing XML document.
+    cors_file = open(cors_arg, 'r')
+    cors_txt = cors_file.read()
+    cors_file.close()
+    cors_obj = Cors()
+
+    # Parse XML document and convert into Cors object.
+    h = handler.XmlHandler(cors_obj, None)
+    try:
+      xml.sax.parseString(cors_txt, h)
+    except xml.sax._exceptions.SAXParseException, e:
+      raise CommandException('Requested CORS is invalid: %s at line %s, '
+                             'column %s' % (e.getMessage(), e.getLineNumber(),
+                                            e.getColumnNumber()))
+
+    # Iterate over URIs, expanding wildcards, and setting the CORS on each.
+    some_matched = False
+    for uri_str in uri_args:
+      for blr in self.WildcardIterator(uri_str):
+        uri = blr.GetUri()
+        if not uri.names_bucket():
+          raise CommandException('URI %s must name a bucket for the %s command'
+                                 % (str(uri), self.command_name))
+        some_matched = True
+        print 'Setting CORS on %s...' % uri
+        uri.set_cors(cors_obj, False, self.headers)
+    if not some_matched:
+      raise CommandException('No URIs matched')
+
+    return 0
+
+  # Test specification. See definition of test_steps in base class for
+  # details on how to populate these fields.
+  empty_doc1 = parseString('<CorsConfig/>').toprettyxml(indent='    ')
+
+  empty_doc2 = parseString(
+      '<CorsConfig></CorsConfig>').toprettyxml(indent='    ')
+
+  empty_doc3 = parseString(
+      '<CorsConfig><Cors/></CorsConfig>').toprettyxml(indent='    ')
+
+  empty_doc4 = parseString(
+    '<CorsConfig><Cors></Cors></CorsConfig>').toprettyxml(indent='    ')
+  
+  cors_bad1 = ('<?xml version="1.0" ?><CorsConfig><Cors><Methods><Method>GET'
+               '</ResponseHeader></Methods></Cors></CorsConfig>')
+
+  cors_bad2 = ('<?xml version="1.0" ?><CorsConfig><Cors><Methods><Cors>GET'
+               '</Cors></Methods></Cors></CorsConfig>')
+
+  cors_bad3 = ('<?xml version="1.0" ?><CorsConfig><Methods><Method>GET'
+               '</Method></Methods></Cors></CorsConfig>')
+
+  cors_bad4 = ('<?xml version="1.0" ?><CorsConfig><Cors><Method>GET'
+               '</Method></Cors></CorsConfig>')
+
+  cors_doc=parseString('<CorsConfig><Cors><Origins>'
+      '<Origin>origin1.example.com</Origin>'
+      '<Origin>origin2.example.com</Origin>'
+      '</Origins><Methods><Method>GET</Method>'
+      '<Method>PUT</Method><Method>POST</Method></Methods>'
+      '<ResponseHeaders><ResponseHeader>foo</ResponseHeader>'
+      '<ResponseHeader>bar</ResponseHeader></ResponseHeaders>'
+      '<MaxAgeSec>3600</MaxAgeSec></Cors>'
+      '<Cors><Origins><Origin>origin3.example.com</Origin></Origins>'
+      '<Methods><Method>GET</Method><Method>DELETE</Method></Methods>'
+      '<ResponseHeaders><ResponseHeader>foo2</ResponseHeader>'
+      '<ResponseHeader>bar2</ResponseHeader></ResponseHeaders>'
+      '</Cors></CorsConfig>').toprettyxml(indent='    ')
+
+ 
+  test_steps = [
+    # (test name, cmd line, ret code, (result_file, expect_file))
+    ('setup empty doc 1', 'echo \'' + empty_doc1 + '\' >$F9', 0, None),
+    ('setup empty doc 2', 'echo \'' + empty_doc2 + '\' >$F8', 0, None),
+    ('setup empty doc 3', 'echo \'' + empty_doc3 + '\' >$F7', 0, None),
+    ('setup empty doc 4', 'echo \'' + empty_doc4 + '\' >$F6', 0, None),
+    ('setup cors doc', 'echo \'' + cors_doc + '\' >$F5', 0, None),
+    ('setup bad cors 1', 'echo \'' + cors_bad1 + '\' >$F4', 0, None),
+    ('setup bad cors 2', 'echo \'' + cors_bad2 + '\' >$F3', 0, None),
+    ('setup bad cors 3', 'echo \'' + cors_bad3 + '\' >$F2', 0, None),
+    ('setup bad cors 4', 'echo \'' + cors_bad4 + '\' >$F1', 0, None),
+    ('verify default cors', 'gsutil getcors gs://$B0 >$F0',
+      0, ('$F0', '$F9')),
+    ('set empty cors 1', 'gsutil setcors $F9 gs://$B0', 0, None),
+    ('verify empty cors 1', 'gsutil getcors gs://$B0 >$F0', 0, ('$F0', '$F9')),
+    ('set empty cors 2', 'gsutil setcors $F8 gs://$B0', 0, None),
+    ('verify empty cors 2', 'gsutil getcors gs://$B0 >$F0', 0, ('$F0', '$F9')),
+    ('set empty cors 3', 'gsutil setcors $F7 gs://$B0', 0, None),
+    ('verify empty cors 3', 'gsutil getcors gs://$B0 >$F0', 0, ('$F0', '$F7')),
+    ('set empty cors 4', 'gsutil setcors $F6 gs://$B0', 0, None),
+    ('verify empty cors 4', 'gsutil getcors gs://$B0 >$F0', 0, ('$F0', '$F7')),
+    ('set non-null cors', 'gsutil setcors $F5 gs://$B0', 0, (0, None)),
+    ('verify non-null cors', 'gsutil getcors gs://$B0 >$F0', 0, ('$F0', '$F5')),
+    ('bad1 cors fails', 'gsutil setcors $F4 gs://$B0', 1, (0, None)),
+    ('bad2 cors fails', 'gsutil setcors $F3 gs://$B0', 1, (0, None)),
+    ('bad3 cors fails', 'gsutil setcors $F2 gs://$B0', 1, (0, None)),
+    ('bad4 cors fails', 'gsutil setcors $F1 gs://$B0', 1, (0, None)),
+    ('reset empty cors', 'gsutil setcors $F9 gs://$B0', 0, None),
+    ('verify empty cors', 'gsutil getcors gs://$B0 >$F0', 0, ('$F0', '$F9')),
+    ('set multi non-null cors', 'gsutil setcors $F5 gs://$B0 gs://$B1',
+      0, (0, None)),
+    ('verify non-null 1', 'gsutil getcors gs://$B0 >$F0', 0, ('$F0', '$F5')),
+    ('verify non-null 2', 'gsutil getcors gs://$B1 >$F0', 0, ('$F0', '$F5')),
+    ('reset empty cors', 'gsutil setcors $F9 gs://$B0', 0, None),
+    ('verify empty cors', 'gsutil getcors gs://$B0 >$F0', 0, ('$F0', '$F9')),
+    ('set wildcard non-null cors', 'gsutil setcors $F5 gs://gsutil_test*',
+      0, (0, None)),
+    ('verify non-null 1', 'gsutil getcors gs://$B0 >$F0', 0, ('$F0', '$F5')),
+    ('verify non-null 2', 'gsutil getcors gs://$B1 >$F0', 0, ('$F0', '$F5')),
+  ]
+