1 files changed, 92 insertions, 0 deletions
diff --git a/tools/client-side/server-version.py b/tools/client-side/server-version.py
new file mode 100755
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+++ b/tools/client-side/server-version.py
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+#!/usr/bin/env python
+#
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+#
+#
+#
+# server-version.py: print a Subversion server's version number
+#
+# USAGE: server-version.py URL
+#
+# The URL can contain any path on the server, as we are simply looking
+# for Apache's response to OPTIONS, and its Server: header.
+#
+# EXAMPLE:
+#
+#   $ ./server-version.py http://svn.collab.net/
+#                   or
+#   $ ./server-version.py https://svn.collab.net/
+#
+
+import sys
+try:
+  # Python >=3.0
+  from http.client import HTTPConnection as http_client_HTTPConnection
+  from http.client import HTTPSConnection as http_client_HTTPSConnection
+  from urllib.parse import urlparse as urllib_parse_urlparse
+except ImportError:
+  # Python <3.0
+  from httplib import HTTPConnection as http_client_HTTPConnection
+  from httplib import HTTPSConnection as http_client_HTTPSConnection
+  from urlparse import urlparse as urllib_parse_urlparse
+
+
+def print_version(url):
+  scheme, netloc, path, params, query, fragment = urllib_parse_urlparse(url)
+  if scheme == 'http':
+    conn = http_client_HTTPConnection(netloc)
+  elif scheme == 'https':
+    conn = http_client_HTTPSConnection(netloc)
+  else:
+    print('ERROR: this script only supports "http" and "https" URLs')
+    sys.exit(1)
+  conn.putrequest('OPTIONS', path)
+  conn.putheader('Host', netloc)
+  conn.endheaders()
+  resp = conn.getresponse()
+  status, msg, server = (resp.status, resp.msg, resp.getheader('Server'))
+  conn.close()
+
+  # 1) Handle "OK" (200)
+  # 2) Handle redirect requests (302), if requested resource
+  #    resides temporarily under a different URL
+  # 3) Handle authorization (401), if server requests for authorization
+  #    ignore it, since we are interested in server version only
+  if status != 200 and status != 302 and status != 401:
+    print('ERROR: bad status response: %s %s' % (status, msg))
+    sys.exit(1)
+  if not server:
+    # a missing Server: header. Bad, bad server! Go sit in the corner!
+    print('WARNING: missing header')
+  else:
+    for part in server.split(' '):
+      if part[:4] == 'SVN/':
+        print(part[4:])
+        break
+    else:
+      # the server might be configured to hide this information, or it
+      # might not have mod_dav_svn loaded into it.
+      print('NOTICE: version unknown')
+
+
+if __name__ == '__main__':
+  if len(sys.argv) != 2:
+    print('USAGE: %s URL' % sys.argv[0])
+    sys.exit(1)
+  print_version(sys.argv[1])