From 766d791da91874b4e8c3d8e9026505e223424896 Mon Sep 17 00:00:00 2001
From: Alexandre Dulaunoy <a@foo.be>
Date: Mon, 4 Feb 2013 18:46:29 +0100
Subject: [PATCH] First version to fetch, uncompress and dump DCU blobs.

By default, it's the raw format (txt) dump from DCU. You
can also dump JSON format.

Usage: dcu-fetch.py [options] dcu feed blob fetcher

Options:
  -h, --help            show this help message and exit
  -d, --debug           output debug message on stderr
  -a ACCOUNT_NAME, --account_name=ACCOUNT_NAME
                        Microsoft Azure account name
  -k ACCOUNT_KEY, --account_key=ACCOUNT_KEY
                        Microsoft Azure key to access DCU container
  -c, --clear           Delete blobs and containers after fetching
  -e, --header          Remove field header in the output (default is
                        displayed)
  -f OUTPUT_FORMAT, --format=OUTPUT_FORMAT
                        output txt, json (default is txt)
---
 bin/dcu-fetch.py | 99 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 bin/dcu-fetch.py

diff --git a/bin/dcu-fetch.py b/bin/dcu-fetch.py
new file mode 100644
index 0000000..a907386
--- /dev/null
+++ b/bin/dcu-fetch.py
@@ -0,0 +1,99 @@
+# -*- coding: utf-8 -*-
+#
+# dcu-fetch.py is a Python script to fetch blobs published by DCU
+#
+# Standard python libraries (>=2.6) + Azure Python SDK
+#
+# Copyright (C) 2013 Alexandre Dulaunoy - alexandre.dulaunoy@circl.lu
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import gzip
+import StringIO
+from azure.storage import BlobService
+from optparse import OptionParser
+import sys
+import json
+from bson import json_util
+
+debug = False
+header = True
+output_format = "txt"
+
+headers = ["SourcedFrom","FileTimeUtc", "Botnet", "SourceIp", "SourcePort", "SourceIpAsnNr", "TargetIp", "TargetPort", "Payload", "SourceIpCountryCode", "SourceIpRegion", "SourceIpCity", "SourceIpPostalCode", "SourceIpLatitude", "SourceIpLongitude", "SourceIpMetroCode", "SourceIpAreaCode", "HttpRequest", "HttpReferrer", "HttpUserAgent", "HttpMethod", "HttpVersion", "HttpHost", "Custom Field 1", "Custom Field 2", "Custom Field 3", "Custom Field 4", "Custom Field 5"]
+
+usage = "usage: %prog [options] dcu feed blob fetcher"
+parser = OptionParser(usage)
+parser.add_option("-d","--debug", dest="debug", action='store_true', help="output debug message on stderr")
+parser.add_option("-a","--account_name", dest="account_name", help="Microsoft Azure account name")
+parser.add_option("-k","--account_key", dest="account_key", help="Microsoft Azure key to access DCU container")
+parser.add_option("-c","--clear", dest="clear", action='store_true', help="Delete blobs and containers after fetching")
+parser.add_option("-e","--header", dest="header", action='store_true', help="Remove field header in the output (default is displayed)")
+parser.add_option("-f","--format", dest="output_format", help="output txt, json (default is txt)")
+
+(options, args) = parser.parse_args()
+
+if options.debug:
+    debug=True
+
+if options.header:
+    header=False
+
+if options.output_format:
+    output_format = options.output_format
+
+if options.account_name:
+    account_name=options.account_name
+else:
+    sys.stderr.write("Azure account name is missing")
+    sys.exit(1)
+
+if options.account_key:
+    account_key=options.account_key
+else:
+    sys.stderr.write("Azure key is missing")
+    sys.exit(1)
+
+if header and not options.output_format:
+    print '\t'.join(str(h) for h in headers)
+
+blob_service = BlobService(account_name, account_key)
+for container in blob_service.list_containers():
+    c = container.name
+    if c == "heartbeat": continue
+    if debug: sys.stderr.write("Processing container: "+str(c)+"\n")
+    for b in blob_service.list_blobs(c):
+        if debug: sys.stderr.write("Processing blob: "+str(b.name)+"\n")
+        data = blob_service.get_blob(c, b.name)
+        cs = StringIO.StringIO(data)
+        gzipstream = gzip.GzipFile(fileobj=cs)
+        if output_format == "txt":
+            print gzipstream.read()
+        elif output_format == "json":
+            d = {}
+            i = 0
+            ds = gzipstream.read()
+            # some DCU entries contains more than 28 values (outside the
+            # definition of the headers)
+            for x in ds.strip().split("\t")[:27]:
+                d[headers[i]] = x
+                i=i+1
+            print (json.dumps(d, sort_keys=True, default=json_util.default))
+        if options.clear:
+            if debug: sys.stderr.write("Deleting blob: "+str(b.name)+"\n")
+            blob_service.delete_blob(c, b.name)
+    if options.clear:
+        if debug: sys.stderr.write("Deleting container: "+str(c)+"\n")
+        blob_service.delete_container(c)