version 0.4

Also supports calling by secondary argument (kind-of busybox
stylekind-of). Drop support for multicall setuptools wrapper – when
installed using setuptools, the user should call explicit function
instead.

.travis.yml

@@ -0,0 +1,13 @@
+before_install:
+  - sudo apt-get install -y bind9utils
+language: python
+python:
+ - "3.5"
+ - "3.6"
+ - "nightly"
+install:
+ - pip install -e .
+ - pip install pytest
+script:
+ - pytest
+sudo: false

README.rst

@@ -17,36 +17,47 @@ Main features
 - enforce updating serial number when zone content is changed
 - both ``pre-commit`` and ``pre-receive``/``update`` hooks to enforce similar checks in the remote repository
 - ``post-receive`` hook to checkout the working copy from a bare repository, generate config snippets for various DNS server software and reload them
-- only Python standard library is used
+- only Python 3.5+ standard library is used
 
 
 Requirements
 ------------
 
 - Python 3.5+
-- `named-compilezone(8)`_ (part of BIND9 package)
+- `named-compilezone(8)`_ (part of `bind9utils` package)
 - git
 
 
-Instalation and usage
----------------------
+Simple instalation (especially for workstations)
+------------------------------------------------
 
-- install required dependencies
-- install ``dzonegit`` package using your favourite tool (``virtualenvwrapper``,
-  ``venv``, ``pipenv``, etc.)
+Since there is no other Python dependency than the standard library, you can
+simply download the `dzonegit.py` file, make it executable and rename/symlink
+it to an appropriate hook location inside the Git repository
+`.git/hooks/pre-commit`. This is especially handy for the end users not
+experienced with Python packaging ecosystem.
+
+
+Full instalation and usage
+--------------------------
+
+- install all the requirements
+- install ``dzonegit`` Python package using your
+  favourite tool (``virtualenvwrapper``, ``venv``, ``pipenv``, etc.)
 - in the local repository, create a symlink for the ``pre-commit`` hook:
-
   ``$ ln -s $(which dzonegit-pre-commit) /path/to/repo/.git/hooks/pre-commit``
-- on the server, install some git repository management software, preferrably Gitolite_
-- on the server, install either ``pre-receive`` or ``update`` hook (both do the same) as
-  well as ``post-receive`` hook. See `Gitolite documentation on how to add custom hooks`_
-- on the server set up the configuration options for each repository
+- on the server, install some git repository management software,
+  preferably Gitolite_
+- on the server, install either ``pre-receive`` or ``update`` hook
+  (both do the same) as  well as the ``post-receive`` hook. See `Gitolite
+  documentation on how to add custom hooks`_
+- on the server, set up the configuration options for each repository
 
 Configuration options
 ---------------------
 
-All configuration options are stored in `git-config(1)`_ in section named ``dzonegit``.
-All boolean options default to *False*.
+All configuration options are stored in `git-config(1)`_ in the section
+named ``dzonegit``.  All boolean options default to *False*.
 
 
 *dzonegit.ignorewhitespaceerrors*
@@ -76,7 +87,7 @@ All boolean options default to *False*.
   can be provided by appending single digit from 1 to 9 to this option.
 
 *dzonegit.zonereloadcmd*
-  A command to run for each zone, whose zone file has been modified. Zone
+  A command to run for each zone, where zone file has been modified. Zone
   name is automatically appended as the last argument. Should do something
   like ``rndc reload``. More commands can be provided by appending single digit
   from 1 to 9 to this option.
@@ -84,20 +95,27 @@ All boolean options default to *False*.
 *dzonegit.zoneblacklist*
   Path to a text file containing list of zone names without trailing dots,
   one per line. If zone is found on the blacklist, it is ignored when
-  ``post-receive`` hook generates configuration.
+  ``post-receive`` hook generates configuration. Wildcards can be used as
+  well, see `JSON template`_ below.
 
 *dzonegit.zonewhitelist*
   Path to a text file containing list of zone names without trailing dots,
   one per line. If not empty and zone is not found on the whitelist,
-  it is ignored when ``post-receive`` hook generates configuration.
+  it is ignored when ``post-receive`` hook generates configuration. Wildcards
+  can be used as well, see `JSON template`_ below.
 
 JSON template
 -------------
 
 The DNS server configuration snippets are generated using a simple JSON-based
-template. All keys are optional but please make sure the file is a valid
-JSON file. It is possible to define a zone-specific options, for instance for
-changing DNSSEC parameters per zone.
+template. All keys are optional but please make sure the file is a valid JSON
+file. It is possible to define a zone-specific options, for instance for
+changing DNSSEC parameters per zone. Those zone-specific options allow usage of
+wildcards; if an exact match of zone name is not found, the leftmost label is
+substituted with `*`. If still no match is found, the leftmost label is dropped
+and the second one is again substituted with `*`. In the end, a single `*` is
+checked. Only if even this key is not found, the value of *defaultvar* is used
+as the zone-specific option.
 
 Valid keys are:
 
@@ -112,19 +130,22 @@ Valid keys are:
 
 *defaultvar*
   A string that would template variable ``$zonevar`` expand to if there is not
-  a zone-specific variable defined.
+  a zone-specific variable defined, nor any wildcard matched.
 
 *zonevars*
   An object mapping zone names (without the final dot) to a zone-specific
-  variable to which template variable ``$zonevar`` would expand to.
+  variable to which template variable ``$zonevar`` would expand to. Using
+  wildcards is possible by replacing the leftmost label with `*`. Ultimately,
+  a key with label `*` will match every single zone (making *defaultvar*
+  option litte bit pointless)
 
 In the template strings, these placeholders are supported:
 
 ``$datetime``
-  Current timestamp
+  Current date and time in human readable format
 
 ``$zonename``
-  Zone name, without trailing dot
+  Zone name, without the trailing dot
 
 ``$zonefile``
   Full path to the zone file
@@ -138,12 +159,14 @@ Example JSON template for Knot DNS
 .. code-block:: json
 
     {
-      "header": "# Managed by dzonegit, do not edit.\n",
+      "header": "# Managed by dzonegit, do not edit.\nzone:",
       "footer": "",
-      "item": " - zone: \"$zonename\"\n   file: \"$zonefile\"\n   $zonevar\n",
+      "item": " - domain: \"$zonename\"\n   file: \"$zonefile\"\n   $zonevar\n",
       "defaultvar": "template: default",
       "zonevars": {
-        "example.com": "template: signed"
+        "example.com": "template: signed",
+        "*.cz": "template: czdomains",
+        "*.in-addr.arpa": "template: ipv4reverse"
       }
     }
 

dzonegit.py

@@ -268,6 +268,23 @@ def replace_serial(path, oldserial, newserial):
     path.write_text(updated)
 
 
+def get_zone_wildcards(name):
+    """ A generator of wildcards out of a zone name.
+    For a DNS name, returns series of:
+     - the name itself
+     - the name with first label substitued as *
+     - the name with first label dropped and second substittuted as *
+     - ...
+     - single *
+"""
+    yield name
+    labels = name.split(".")
+    while labels:
+        labels[0] = "*"
+        yield ".".join(labels)
+        labels.pop(0)
+
+
 def template_config(checkoutpath, template, blacklist=set(), whitelist=set()):
     """ Recursively find all *.zone files and template config file using
     a simple JSON based template like this:
@@ -278,7 +295,9 @@ def template_config(checkoutpath, template, blacklist=set(), whitelist=set()):
       "item": " - zone: \"$zonename\"\n   file: \"$zonefile\"\n   $zonevar\n",
       "defaultvar": "template: default",
       "zonevars": {
-        "example.com": "template: signed"
+        "example.com": "template: signed",
+        "*.com": "template: dotcom",
+        "*": "template: uberdefault"
       }
     }
 
@@ -301,13 +320,16 @@ def template_config(checkoutpath, template, blacklist=set(), whitelist=set()):
     out.append(headertpl.substitute(mapping))
     for f in sorted(Path(checkoutpath).glob("**/*.zone")):
         zonename = get_zone_name(f, f.read_bytes())
-        if whitelist and zonename not in whitelist:
+        if whitelist and not any(
+                n in whitelist
+                for n in get_zone_wildcards(zonename)
+        ):
             print(
                 "WARNING: Ignoring zone {} - not whitelisted for "
                 "this repository.".format(zonename),
             )
             continue
-        if zonename in blacklist:
+        if any(n in blacklist for n in get_zone_wildcards(zonename)):
             print(
                 "WARNING: Ignoring zone {} - blacklisted for "
                 "this repository.".format(zonename),
@@ -323,7 +345,12 @@ def template_config(checkoutpath, template, blacklist=set(), whitelist=set()):
             )
             continue
         zones[zonename] = f.relative_to(checkoutpath)
-        zonevar = zonevars[zonename] if zonename in zonevars else defaultvar
+        for name in get_zone_wildcards(zonename):
+            if name in zonevars:
+                zonevar = zonevars[name]
+                break
+        else:
+            zonevar = defaultvar
         out.append(itemtpl.substitute(
             mapping, zonename=zonename,
             zonefile=str(f), zonevar=zonevar,
@@ -468,17 +495,25 @@ def post_receive(stdin=sys.stdin):
                     subprocess.run(cmd)
 
 
+def get_action(argv=sys.argv):
+    name = Path(argv[0]).name
+    if "pre-commit" in name:
+        return pre_commit
+    if "update" in name:
+        return update
+    if "pre-receive" in name:
+        return pre_receive
+    if "post-receive" in name:
+        return post_receive
+
+
 def main():
-    name = Path(sys.argv[0]).name
-    print(name)
-    if name == "pre-commit":
-        pre_commit()
-    elif name == "update":
-        update()
-    elif name == "pre-receive":
-        pre_receive()
-    elif name == "post-receive":
-        post_receive()
+    action = get_action()
+    if action is None and len(sys.argv) > 1:
+        sys.argv.pop(0)
+        action = get_action()
+    if action:
+        action()
     else:
         sys.exit("No valid command found")
 

setup.py

@@ -5,7 +5,7 @@ readme = Path(__file__).with_name("README.rst").read_text()
 
 setup(
     name="dzonegit",
-    version="0.1",
+    version="0.4",
     description="Git hooks to manage a repository of DNS zones",
     long_description=readme,
     long_description_content_type="text/x-rst",
@@ -19,7 +19,6 @@ setup(
     tests_require=["pytest"],
     entry_points={
             "console_scripts": [
-                "dzonegit = dzonegit:main",
                 "dzonegit-pre-commit = dzonegit:pre_commit",
                 "dzonegit-pre-receive = dzonegit:pre_receive",
                 "dzonegit-post-receive = dzonegit:post_receive",

test_dzonegit.py

@@ -298,12 +298,14 @@ def test_template_config(git_dir):
   "item": " - zone: \"$zonename\"\n   file: \"$zonefile\"\n   $zonevar\n",
   "defaultvar": "template: default",
   "zonevars": {
-    "example.com": "template: signed"
+    "example.com": "template: signed",
+    "*": "template: dummy"
   }
 }"""
     output = dzonegit.template_config(str(git_dir), template)
     assert output.startswith("# Managed by dzonegit")
     assert " - zone: \"dummy\"\n   file: \"" in output
+    assert "   template: dummy" in output
     assert output.endswith("# This is the end")
     output = dzonegit.template_config(
         str(git_dir),
@@ -311,9 +313,22 @@ def test_template_config(git_dir):
         whitelist=set("a"),
     )
     assert " - zone: \"dummy\"\n   file: \"" not in output
+    output = dzonegit.template_config(
+        str(git_dir),
+        template,
+        blacklist=set("*"),
+    )
+    assert " - zone: \"dummy\"\n   file: \"" not in output
 
 
 def test_load_set_file(git_dir):
     git_dir.join("dummy").write("dummy\n\n # Comment")
     s = dzonegit.load_set_file("dummy")
     assert s == {"dummy"}
+
+
+def test_get_zone_wildcards():
+    assert list(dzonegit.get_zone_wildcards("a.long.zone.name")) == [
+        "a.long.zone.name", "*.long.zone.name",
+        "*.zone.name", "*.name", "*",
+    ]