install scripts using setuptools

- lookup.py was deprecated in favor of setuptools entry_points; the code for
  lookup.py was moved to django_sshkey.util.lookup_main
- lookup.sh was renamed to django-sshkey-lookup since setuptools retains the
  names of scripts once installed. A symlink has been left in place.

MANIFEST.in

@@ -4,6 +4,7 @@ include COPYING.LESSER
 include README.md
 include lookup.py
 include lookup.sh
+include django-sshkey-lookup
 include openssh-6.2p2-authorized-keys-command-stdin.diff
 recursive-include django_sshkey/management *.py
 recursive-include django_sshkey/migrations *.py

README.md

@@ -51,9 +51,9 @@ In all cases it is recommended and/or required that the command specified with
 AuthorizedKeysCommand be a shell script that is owned by and only writable by
 root which invokes one of the commands below:
 
-## Using lookup.sh
+## Using django-sshkey-lookup 
 
-*Usage: lookup.sh URL [USERNAME]*
+*Usage: django-sshkey-lookup URL [USERNAME]*
 
 URL should be the full URL to /sshkey/lookup on your Django web server running
 the sshkey app.
@@ -67,15 +67,23 @@ standard input; if the key is found it is printed to standard output.
 This command assumes that some fairly standard commands, like ssh-keygen and
 curl, are found in $PATH.
 
+This command is equivalent to the old script `lookup.sh` but was renamed to
+have a less ambiguous name when installed system-wide. A symlink is left in
+its place for backwards compatibility.
+
 This is generally the fastest method.
 
-## Using lookup.py
+## Using django-sshkey-pylookup
 
-*Usage: lookup.py URL [USERNAME]*
+*Usage: django-sshkey-pylookup URL [USERNAME]*
 
 Same as above, but it's all written in Python and doesn't rely on external
 commands.
 
+This script is generated by setuptools when this package is installed. The old
+equivalent, `lookup.py` is available with a deprecation warning for backwards
+compatibility.
+
 The parent directory of the django\_sshkey app must be in PYTHONPATH.
 
 This is generally the second fastest method.

django_sshkey/util.py

@@ -38,3 +38,7 @@ def lookup_command(args):
     status = 0
     sys.stdout.write(line)
   sys.exit(status)
+
+def lookup_main():
+  import sys
+  lookup_command(sys.argv[1:])

lookup.py

@@ -16,7 +16,9 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with django-sshkey.  If not, see <http://www.gnu.org/licenses/>.
 
+import warnings
 import django_sshkey.util
-import sys
 
-django_sshkey.util.lookup_command(sys.argv[1:])
+warnings.warn("lookup.py is deprecated; use django-sshkey-pylookup",
+              DeprecationWarning)
+django_sshkey.util.lookup_main()

lookup.sh

+django-sshkey-lookup
\ No newline at end of file

setup.py

@@ -31,4 +31,12 @@ setup(
     'Topic :: Internet :: WWW/HTTP',
     'Topic :: Internet :: WWW/HTTP :: Dynamic Content',
   ],
+  scripts=[
+    'django-sshkey-lookup',
+  ],
+  entry_points={
+    'console_scripts': [
+      'django-sshkey-pylookup = django_sshkey.util:lookup_main',
+    ],
+  },
 )