master trunk of gnowsys-studio

6 files changed, 502 insertions, 0 deletions

diff --git a/gstudio/spam_checker/__init__.py b/gstudio/spam_checker/__init__.py
new file mode 100644
index 0000000..b07b175
--- /dev/null
+++ b/gstudio/spam_checker/__init__.py
@@ -0,0 +1,100 @@
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+# This project incorporates work covered by the following copyright and permission notice:  
+
+#    Copyright (c) 2009, Julien Fache
+#    All rights reserved.
+
+#    Redistribution and use in source and binary forms, with or without
+#    modification, are permitted provided that the following conditions
+#    are met:
+
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in
+#      the documentation and/or other materials provided with the
+#      distribution.
+#    * Neither the name of the author nor the names of other
+#      contributors may be used to endorse or promote products derived
+#      from this software without specific prior written permission.
+
+#    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+#    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+#    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+#    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+#    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+#    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+#    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+#    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+#    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+#    OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+
+"""Spam checker for Gstudio"""
+import warnings
+
+from django.utils.importlib import import_module
+from django.core.exceptions import ImproperlyConfigured
+
+from gstudio.settings import SPAM_CHECKER_BACKENDS
+
+
+def get_spam_checker(backend_path):
+    """Return the selected spam checker backend"""
+    try:
+        backend_module = import_module(backend_path)
+        backend = getattr(backend_module, 'backend')
+    except (ImportError, AttributeError):
+        warnings.warn('%s backend cannot be imported' % backend_path,
+                      RuntimeWarning)
+        backend = None
+    except ImproperlyConfigured, e:
+        warnings.warn(str(e), RuntimeWarning)
+        backend = None
+
+    return backend
+
+
+def check_is_spam(content, content_object, request,
+                  backends=SPAM_CHECKER_BACKENDS):
+    """Return True if the content is a spam, else False"""
+    for backend_path in backends:
+        spam_checker = get_spam_checker(backend_path)
+        is_spam = spam_checker(content, content_object, request)
+        if is_spam:
+            return True
+
+    return False
diff --git a/gstudio/spam_checker/backends/__init__.py b/gstudio/spam_checker/backends/__init__.py
new file mode 100644
index 0000000..da6cf49
--- /dev/null
+++ b/gstudio/spam_checker/backends/__init__.py
@@ -0,0 +1 @@
+"""Shortlink backends for Gstudio"""
diff --git a/gstudio/spam_checker/backends/all_is_spam.py b/gstudio/spam_checker/backends/all_is_spam.py
new file mode 100644
index 0000000..8964aa3
--- /dev/null
+++ b/gstudio/spam_checker/backends/all_is_spam.py
@@ -0,0 +1,72 @@
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+# This project incorporates work covered by the following copyright and permission notice:  
+
+#    Copyright (c) 2009, Julien Fache
+#    All rights reserved.
+
+#    Redistribution and use in source and binary forms, with or without
+#    modification, are permitted provided that the following conditions
+#    are met:
+
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in
+#      the documentation and/or other materials provided with the
+#      distribution.
+#    * Neither the name of the author nor the names of other
+#      contributors may be used to endorse or promote products derived
+#      from this software without specific prior written permission.
+
+#    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+#    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+#    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+#    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+#    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+#    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+#    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+#    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+#    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+#    OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+
+"""All is spam, spam checker backend for Gstudio"""
+
+
+def backend(comment, content_object, request):
+    """Backend for setting all comments to spam"""
+    return True
diff --git a/gstudio/spam_checker/backends/automattic.py b/gstudio/spam_checker/backends/automattic.py
new file mode 100644
index 0000000..0adf0e8
--- /dev/null
+++ b/gstudio/spam_checker/backends/automattic.py
@@ -0,0 +1,108 @@
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+# This project incorporates work covered by the following copyright and permission notice:  
+
+#    Copyright (c) 2009, Julien Fache
+#    All rights reserved.
+
+#    Redistribution and use in source and binary forms, with or without
+#    modification, are permitted provided that the following conditions
+#    are met:
+
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in
+#      the documentation and/or other materials provided with the
+#      distribution.
+#    * Neither the name of the author nor the names of other
+#      contributors may be used to endorse or promote products derived
+#      from this software without specific prior written permission.
+
+#    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+#    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+#    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+#    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+#    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+#    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+#    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+#    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+#    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+#    OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+
+"""Akismet spam checker backend for Gstudio"""
+from django.conf import settings
+from django.utils.encoding import smart_str
+from django.contrib.sites.models import Site
+from django.core.exceptions import ImproperlyConfigured
+
+from gstudio.settings import PROTOCOL
+
+try:
+    from akismet import Akismet
+    from akismet import APIKeyError
+except ImportError:
+    raise ImproperlyConfigured('akismet module is not available')
+
+if not getattr(settings, 'AKISMET_SECRET_API_KEY', ''):
+    raise ImproperlyConfigured('You have to set AKISMET_SECRET_API_KEY')
+
+AKISMET_API_KEY = settings.AKISMET_SECRET_API_KEY
+
+
+def backend(comment, content_object, request):
+    """Akismet spam checker backend for Gstudio"""
+    blog_url = '%s://%s/' % (PROTOCOL, Site.objects.get_current().domain)
+
+    akismet = Akismet(key=AKISMET_API_KEY, blog_url=blog_url)
+
+    if not akismet.verify_key():
+        raise APIKeyError('Your Akismet API key is invalid.')
+
+    akismet_data = {
+        'user_ip': request.META.get('REMOTE_ADDR', ''),
+        'user_agent': request.META.get('HTTP_USER_AGENT', ''),
+        'referrer': request.META.get('HTTP_REFERER', 'unknown'),
+        'permalink': content_object.get_absolute_url(),
+        'comment_type': 'comment',
+        'comment_author': smart_str(comment.userinfo.get('name', '')),
+        'comment_author_email': smart_str(comment.userinfo.get('email', '')),
+        'comment_author_url': smart_str(comment.userinfo.get('url', '')),
+    }
+    is_spam = akismet.comment_check(smart_str(comment.comment),
+                                    data=akismet_data, build_data=True)
+    return is_spam
diff --git a/gstudio/spam_checker/backends/mollom.py b/gstudio/spam_checker/backends/mollom.py
new file mode 100644
index 0000000..49df00a
--- /dev/null
+++ b/gstudio/spam_checker/backends/mollom.py
@@ -0,0 +1,106 @@
+
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+# This project incorporates work covered by the following copyright and permission notice:  
+
+#    Copyright (c) 2009, Julien Fache
+#    All rights reserved.
+
+#    Redistribution and use in source and binary forms, with or without
+#    modification, are permitted provided that the following conditions
+#    are met:
+
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in
+#      the documentation and/or other materials provided with the
+#      distribution.
+#    * Neither the name of the author nor the names of other
+#      contributors may be used to endorse or promote products derived
+#      from this software without specific prior written permission.
+
+#    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+#    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+#    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+#    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+#    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+#    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+#    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+#    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+#    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+#    OF THE POSSIBILITY OF SUCH DAMAGE.
+"""Mollom spam checker backend for Gstudio"""
+from django.conf import settings
+from django.utils.encoding import smart_str
+from django.core.exceptions import ImproperlyConfigured
+
+try:
+    from pymollom import MollomAPI
+    from pymollom import MollomFault
+except ImportError:
+    raise ImproperlyConfigured('pymollom module is not available')
+
+if not getattr(settings, 'MOLLOM_PUBLIC_KEY', ''):
+    raise ImproperlyConfigured('You have to set a MOLLOM_PUBLIC_KEY setting')
+
+if not getattr(settings, 'MOLLOM_PRIVATE_KEY', ''):
+    raise ImproperlyConfigured('You have to set a MOLLOM_PRIVATE_KEY setting')
+
+MOLLOM_PUBLIC_KEY = settings.MOLLOM_PUBLIC_KEY
+MOLLOM_PRIVATE_KEY = settings.MOLLOM_PRIVATE_KEY
+
+
+def backend(comment, content_object, request):
+    """Mollom spam checker backend for Gstudio"""
+    mollom_api = MollomAPI(
+        publicKey=MOLLOM_PUBLIC_KEY,
+        privateKey=MOLLOM_PRIVATE_KEY)
+    if not mollom_api.verifyKey():
+        raise MollomFault('Your MOLLOM credentials are invalid.')
+
+    mollom_data = {'authorIP': request.META.get('REMOTE_ADDR', ''),
+                   'authorName': smart_str(comment.userinfo.get('name', '')),
+                   'authorMail': smart_str(comment.userinfo.get('email', '')),
+                   'authorURL': smart_str(comment.userinfo.get('url', ''))}
+
+    cc = mollom_api.checkContent(
+        postTitle=smart_str(content_object.title),
+        postBody=smart_str(comment.comment), **mollom_data)
+    # cc['spam']: 1 for ham, 2 for spam, 3 for unsure;
+    # http://mollom.com/blog/spam-vs-ham
+    if cc['spam'] == 2:
+        return True
+    return False
diff --git a/gstudio/spam_checker/backends/typepad.py b/gstudio/spam_checker/backends/typepad.py
new file mode 100644
index 0000000..6205528
--- /dev/null
+++ b/gstudio/spam_checker/backends/typepad.py
@@ -0,0 +1,115 @@
+
+
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+# This project incorporates work covered by the following copyright and permission notice:  
+
+#    Copyright (c) 2009, Julien Fache
+#    All rights reserved.
+
+#    Redistribution and use in source and binary forms, with or without
+#    modification, are permitted provided that the following conditions
+#    are met:
+
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in
+#      the documentation and/or other materials provided with the
+#      distribution.
+#    * Neither the name of the author nor the names of other
+#      contributors may be used to endorse or promote products derived
+#      from this software without specific prior written permission.
+
+#    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+#    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+#    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+#    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+#    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+#    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+#    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+#    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+#    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+#    OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+
+
+"""TypePad spam checker backend for Gstudio"""
+from django.conf import settings
+from django.utils.encoding import smart_str
+from django.contrib.sites.models import Site
+from django.core.exceptions import ImproperlyConfigured
+
+from gstudio.settings import PROTOCOL
+
+try:
+    from akismet import Akismet
+    from akismet import APIKeyError
+except ImportError:
+    raise ImproperlyConfigured('akismet module is not available')
+
+if not getattr(settings, 'TYPEPAD_SECRET_API_KEY', ''):
+    raise ImproperlyConfigured('You have to set TYPEPAD_SECRET_API_KEY')
+
+TYPEPAD_API_KEY = settings.TYPEPAD_SECRET_API_KEY
+
+
+class TypePad(Akismet):
+    """TypePad version of the Akismet module"""
+    baseurl = 'api.antispam.typepad.com/1.1/'
+
+
+def backend(comment, content_object, request):
+    """TypePad spam checker backend for Gstudio"""
+    blog_url = '%s://%s/' % (PROTOCOL, Site.objects.get_current().domain)
+
+    typepad = TypePad(key=TYPEPAD_API_KEY, blog_url=blog_url)
+
+    if not typepad.verify_key():
+        raise APIKeyError('Your Typepad API key is invalid.')
+
+    typepad_data = {
+        'user_ip': request.META.get('REMOTE_ADDR', ''),
+        'user_agent': request.META.get('HTTP_USER_AGENT', ''),
+        'referrer': request.META.get('HTTP_REFERER', 'unknown'),
+        'permalink': content_object.get_absolute_url(),
+        'comment_type': 'comment',
+        'comment_author': smart_str(comment.userinfo.get('name', '')),
+        'comment_author_email': smart_str(comment.userinfo.get('email', '')),
+        'comment_author_url': smart_str(comment.userinfo.get('url', '')),
+    }
+    is_spam = typepad.comment_check(smart_str(comment.comment),
+                                    data=typepad_data, build_data=True)
+    return is_spam