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-Allow hosts
------------
-
-On some environments the links visited by `zc.buildout` can be forbidden
-by paranoiac firewalls. These URL might be on the chain of links
-visited by `zc.buildout` whether they are defined in the `find-links` option
-or by various eggs in their `url`, `download_url` and `dependency_links` metadata.
-
-It is even harder to track that package_index works like a spider and
-might visit links and go to other location.
-
-The `allow-hosts` option provides a way to prevent this, and
-works exactly like the one provided in `easy_install`
-(see `easy_install allow-hosts option`_).
-
-You can provide a list of allowed host, together with wildcards::
-
- [buildout]
- ...
-
- allow-hosts =
- *.python.org
- example.com
-
-Let's create a develop egg in our buildout that specifies
-`dependency_links` which points to a server in the outside world::
-
- >>> mkdir(sample_buildout, 'allowdemo')
- >>> write(sample_buildout, 'allowdemo', 'dependencydemo.py',
- ... 'import eggrecipekss.core')
- >>> write(sample_buildout, 'allowdemo', 'setup.py',
- ... '''from setuptools import setup; setup(
- ... name='allowdemo', py_modules=['dependencydemo'],
- ... install_requires = 'kss.core',
- ... dependency_links = ['http://dist.plone.org'],
- ... zip_safe=True, version='1')
- ... ''')
-
-Now let's configure the buildout to use the develop egg,
-together with some rules that disallow any website but PyPI and
-local files::
-
- >>> write(sample_buildout, 'buildout.cfg',
- ... '''
- ... [buildout]
- ... develop = allowdemo
- ... parts = eggs
- ... allow-hosts =
- ... pypi.python.org
- ...
- ... [eggs]
- ... recipe = zc.recipe.egg:eggs
- ... eggs = allowdemo
- ... ''')
-
-Now we can run the buildout and make sure all attempts to dist.plone.org fails::
-
- >>> print system(buildout) # doctest: +ELLIPSIS
- Develop: '/sample-buildout/allowdemo'
- ...
- Link to http://dist.plone.org ***BLOCKED*** by --allow-hosts
- ...
- While:
- Installing eggs.
- Getting distribution for 'kss.core'.
- Error: Couldn't find a distribution for 'kss.core'.
- <BLANKLINE>
-
-That's what we wanted : this will prevent any attempt to access
-unwanted domains. For instance, some packages are listing in their
-links `svn://` links. These can lead to error in some cases, and
-can therefore be protected like this::
-
-XXX (showcase with a svn:// file)
-
- >>> write(sample_buildout, 'buildout.cfg',
- ... '''
- ... [buildout]
- ... develop = allowdemo
- ... parts = eggs
- ... allow-hosts =
- ... ^(!svn://).*
- ...
- ... [eggs]
- ... recipe = zc.recipe.egg:eggs
- ... eggs = allowdemo
- ... ''')
-
-Now we can run the buildout and make sure all attempts to dist.plone.org fails::
-
- >>> print system(buildout) # doctest: +ELLIPSIS
- Develop: '/sample-buildout/allowdemo'
- ...
- Link to http://dist.plone.org ***BLOCKED*** by --allow-hosts
- ...
- While:
- Installing eggs.
- Getting distribution for 'kss.core'.
- Error: Couldn't find a distribution for 'kss.core'.
- <BLANKLINE>
-
-Test for issues
----------------
-
-Test for 1.0.5 breakage as in https://bugs.launchpad.net/zc.buildout/+bug/239212::
-
- >>> write(sample_buildout, 'buildout.cfg',
- ... '''
- ... [buildout]
- ... parts=python
- ... foo = ${python:interpreter}
- ...
- ... [python]
- ... recipe=zc.recipe.egg
- ... eggs=zc.buildout
- ... interpreter=python
- ... ''')
- >>> print system(buildout)
- Unused options for buildout: 'foo'.
- Installing python.
- Generated script '/sample-buildout/bin/buildout'.
- Generated interpreter '/sample-buildout/bin/python'.
- <BLANKLINE>
-
-The bug 239212 above would have got us an *AttributeError* on *buildout._allow_hosts*.
-This was fixed in this changeset:
-http://svn.zope.org/zc.buildout/trunk/src/zc/buildout/buildout.py?rev=87309&r1=87277&r2=87309
-