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Added document_post_save signal to detect is a document has a signature, improve the pre_open_hook, and added logging

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This commit is contained in:
Roberto Rosario
2012-01-01 20:10:52 -04:00
parent 9e71b0bbc5
commit 3de53dccfa
1 changed files with 14 additions and 4 deletions
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18
apps/document_signatures/__init__.py
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@@ -1,4 +1,5 @@
from __future__ import absolute_import
import logging
try:
from cStringIO import StringIO
@@ -6,6 +7,7 @@ except ImportError:
from StringIO import StringIO
from django.utils.translation import ugettext_lazy as _
from django.db.models.signals import post_save
from documents.models import Document, DocumentVersion
from navigation.api import register_links, register_top_menu, \
@@ -13,7 +15,6 @@ from navigation.api import register_links, register_top_menu, \
register_sidebar_template
from django_gpg.runtime import gpg
from django_gpg.exceptions import GPGDecryptionError
#from main.api import register_diagnostic, register_maintenance_links
from .models import DocumentVersionSignature
from .permissions import (
@@ -22,6 +23,8 @@ from .permissions import (
PERMISSION_SIGNATURE_DOWNLOAD
)
logger = logging.getLogger(__name__)
def has_embedded_signature(context):
return DocumentVersionSignature.objects.has_embedded_signature(context['object'])
@@ -31,12 +34,18 @@ def doesnt_have_detached_signature(context):
def document_pre_open_hook(descriptor):
try:
result = gpg.decrypt_file(descriptor)
result = gpg.decrypt_file(descriptor, close_descriptor=False)
# gpg return a string, turn it into a file like object
return StringIO(result.data)
except GPGDecryptionError:
# At least return the original raw content
descriptor.seek(0)
return descriptor
else:
return StringIO(result.data)
def document_post_save(sender, instance, **kwargs):
if kwargs.get('created', False):
DocumentVersionSignature.objects.signature_state(instance.document)
document_signature_upload = {'text': _(u'upload signature'), 'view': 'document_signature_upload', 'args': 'object.pk', 'famfam': 'pencil_add', 'permissions': [PERMISSION_SIGNATURE_UPLOAD], 'conditional_disable': has_embedded_signature}
document_signature_download = {'text': _(u'download signature'), 'view': 'document_signature_download', 'args': 'object.pk', 'famfam': 'disk', 'permissions': [PERMISSION_SIGNATURE_DOWNLOAD], 'conditional_disable': doesnt_have_detached_signature}
@@ -45,5 +54,6 @@ document_verify = {'text': _(u'signatures'), 'view': 'document_verify', 'args':
register_links(Document, [document_verify], menu_name='form_header')
register_links(['document_verify', 'document_signature_upload', 'document_signature_download'], [document_signature_upload, document_signature_download], menu_name='sidebar')
DocumentVersion.register_pre_open_hook(1, document_pre_open_hook)
post_save.connect(document_post_save, sender=DocumentVersion)