from django.conf import settings
from django.contrib.auth.decorators import login_required
from django.contrib.auth.models import Group
from django.core.urlresolvers import reverse
from django.forms.models import model_to_dict
from django.core.files import File
from django.db import transaction
#from django.core.files.temp import NamedTemporaryFile
from django.forms.util import ErrorList
from django.http import HttpResponse, HttpResponseRedirect
from django.shortcuts import render_to_response, redirect
from django.template import RequestContext
from django.utils.translation import ugettext as _, ungettext
from ldt.ldt_utils.forms import ContentForm, MediaForm
from guardian.shortcuts import remove_perm
from ldt.ldt_utils.models import Content, Media, Project
from ldt.security.utils import assign_perm_to_obj, add_change_attr, get_userlist, get_userlist_model
from ldt.security.cache import cached_assign
from ldt.user.forms import PictureForm
from tagging.models import Tag, TaggedItem
import ldt.utils.path as ldt_utils_path
import logging
import mimetypes
import os, stat
import urllib2
import subprocess
import re
import datetime
import math
import requests
import django.utils.simplejson as simplejson
import urlparse
import tempfile
@transaction.commit_manually
def write_content_base(request, iri_id=None):
if iri_id:
instance_content = Content.safe_objects.get(iri_id=iri_id) #@UndefinedVariable
instance_media = instance_content.media_obj
logging.debug("write_content_base : valid form: for instance : media -> " + repr(instance_media) + " content : for instance : " + repr(instance_content)) #@UndefinedVariable
else:
logging.debug("No iri_id") #@UndefinedVariable
instance_content = None
instance_media = None
current_front_project = None
if instance_content:
current_front_project = instance_content.front_project
form_status = 'none'
errors_transaction = []
transaction_succeed = True
if request.method == "POST":
if instance_content is not None:
content_instance_val = model_to_dict(instance_content, exclude=ContentForm.Meta.exclude)
else:
content_instance_val = {}
if instance_media is not None:
media_instance_val = model_to_dict(instance_media, exclude=MediaForm.Meta.exclude)
else:
media_instance_val = {}
#add prefix
def add_prefix(_dict, prefix):
return dict([('%s-%s' % (prefix, key), value) for key,value in _dict.items()])
content_instance_val = add_prefix(content_instance_val, "content")
media_instance_val= add_prefix(media_instance_val, "media")
for k in request.POST.keys():
value = request.POST.get(k)
content_instance_val[k] = value
media_instance_val[k] = value
content_instance_val['read_list'] = request.POST.getlist('read_list')
content_instance_val['write_list'] = request.POST.getlist('write_list')
content_instance_val['share'] = request.POST.get('share', True)
content_form = ContentForm(content_instance_val, prefix="content", instance=instance_content)
media_form = MediaForm(media_instance_val, request.FILES, prefix="media", instance=instance_media)
picture_form = PictureForm(None, request.POST, request.FILES)
if request.user.is_staff:
content_form.fields['front_project'].queryset = Project.objects.filter(contents__in=[instance_content])
media_valid = media_form.is_valid()
content_valid = content_form.is_valid()
picture_valid = picture_form.is_valid()
if 'image' in request.POST.keys():
image_link = request.POST.get('url_image')
if picture_valid and image_link!='' :
try :
r = requests.get(image_link)
img_temp = tempfile.NamedTemporaryFile(suffix='.png')
if img_temp:
img_temp.write(r.content)
img_temp.flush()
picture_form.cleaned_data["image"]=File(img_temp)
except Exception as inst:
logging.debug("couldn't download video thumbnail from image_link : "+str(image_link))
logging.debug("write_content_base : valid form: for instance : " + repr(instance_media) + " -> media " + str(media_valid) + " content : for instance : " + repr(instance_content) + " : " + str(content_valid) + "picture : valid :" +str(picture_valid)) #@UndefinedVariable
if media_valid and content_valid and picture_valid:
# see if media must be created
cleaned_data = {}
cleaned_data.update(media_form.cleaned_data)
cleaned_data.pop("media_public")
media_input_type = content_form.cleaned_data["media_input_type"]
if media_input_type == "none":
media = None
elif media_input_type == "link":
media = content_form.cleaned_data["media_obj"]
created = False
elif media_input_type == "create":
del cleaned_data["media_file"]
if not cleaned_data['videopath']:
cleaned_data['videopath'] = settings.STREAM_URL
# if the source is already http:// or rtmp:// we don't have to add STREAM_URL
if cleaned_data['src'].startswith("rtmp://") or cleaned_data['src'].startswith("http://"):
cleaned_data['videopath'] = ''
try:
media, created = Media.objects.get_or_create(src=cleaned_data['src'], defaults=cleaned_data) #@UndefinedVariable
except:
transaction_succeed = False
elif media_input_type == "url" or media_input_type == "upload" :
# copy file
#complet src
destination_file = None
source_file = None
try:
if media_input_type == "url":
url = cleaned_data["external_src_url"]
source_file = urllib2.urlopen(url)
source_filename = source_file.info().get('Content-Disposition', None)
if not source_filename:
source_filename = urlparse.urlparse(url).path.rstrip("/").split('/')[-1]
elif media_input_type == "upload":
#source_file = request.FILES['media-media_file']
# At this point the file has already be uploaded thanks to the upload view, and original file name is sent through a post var
source_filename = request.POST["media-local_file_name"]
source_filename = ldt_utils_path.sanitize_filename(source_filename)
destination_filepath = os.path.join(settings.STREAM_PATH, source_filename)
base_source_filename = source_filename
extension = base_source_filename.split(".")[-1]
if extension == base_source_filename:
extension = ""
base_basename_filename = base_source_filename
else:
base_basename_filename = base_source_filename[:-1 * (len(extension) + 1)]
i = 0
while os.path.exists(destination_filepath):
base_source_filename = "%s.%d.%s" % (base_basename_filename, i, extension)
destination_filepath = os.path.join(settings.STREAM_PATH, base_source_filename)
i += 1
if media_input_type == "url":
# we upload the file if we are in url case
destination_file = open(destination_filepath, "wb")
chunck = source_file.read(2048)
while chunck:
destination_file.write(chunck)
chunck = source_file.read(2048)
elif media_input_type == "upload":
# The media file has been uploaded in the session temp folder
# so we just have to move to the regular folder and rename it.
if os.path.exists(os.path.join(settings.STREAM_PATH, "tmp/" + request.COOKIES[settings.SESSION_COOKIE_NAME] + "/", source_filename)):
os.rename(os.path.join(settings.STREAM_PATH, "tmp/" + request.COOKIES[settings.SESSION_COOKIE_NAME] + "/", source_filename), os.path.join(settings.STREAM_PATH, base_source_filename))
src_prefix = settings.STREAM_SRC_PREFIX.rstrip("/")
if len(src_prefix) > 0:
cleaned_data["src"] = src_prefix + "/" + base_source_filename
else:
cleaned_data["src"] = base_source_filename
except Exception as inst:
logging.debug("write_content_base : POST error when processing file:" + str(inst)) #@UndefinedVariable
form_status = "error"
#set error for form
if media_input_type == "url":
errors = media_form._errors.setdefault("external_src_url", ErrorList())
errors.append(_("Problem when downloading file from url : ") + url)
elif media_input_type == "upload":
errors = media_form._errors.setdefault("media_file", ErrorList())
errors.append(_("Problem when uploading file : ") + str(inst))
finally:
if media_input_type == "url":
if destination_file:
destination_file.close()
if source_file:
source_file.close()
if form_status != "error":
try:
del cleaned_data["media_file"]
if not cleaned_data['videopath']:
cleaned_data['videopath'] = settings.STREAM_URL
mimetype = cleaned_data.get('mimetype_field', None)
if not mimetype:
mimetype = mimetypes.guess_type(cleaned_data['src'])
cleaned_data['mimetype_field'] = mimetype
media, created = Media.safe_objects.get_or_create(src=cleaned_data['src'], defaults=cleaned_data) #@UndefinedVariable
cached_assign('view_media', request.user, media)
except:
transaction_succeed = False
else:
media = None
if media and not created:
for attribute in ('external_id', 'external_permalink', 'external_publication_url', 'external_src_url', 'media_creation_date', 'videopath', 'duration', 'description', 'title', 'front_project'):
setattr(media, attribute, cleaned_data.get(attribute))
mimetype = cleaned_data.get('mimetype_field', None)
if not mimetype:
mimetype = mimetypes.guess_type(media.src)
media.mimetype_field = mimetype
cached_assign('view_media', request.user, media)
cached_assign('change_media', request.user, media)
media.save()
if form_status != "error":
content_defaults = {}
content_defaults.update(content_form.cleaned_data)
content_defaults['media_obj'] = media
for key in ["media_input_type", "groups", "is_public", "read_list", "write_list", "share" ]:
del content_defaults[key]
try:
content, created = Content.safe_objects.get_or_create(iri_id=content_form.cleaned_data['iri_id'], defaults=content_defaults) #@UndefinedVariable
except:
transaction_succeed = False
if not created and not request.user.has_perm('ldt_utils.change_content', content):
raise AttributeError("%s is not allowed to change content %s" % (request.user, content))
cached_assign('change_content', request.user, content)
cached_assign('view_content', request.user, content)
everyone = Group.objects.get(name=settings.PUBLIC_GROUP_NAME)
if media_form.cleaned_data['media_public']:
cached_assign('view_content', everyone, content)
if media:
cached_assign('view_media', everyone, media)
else:
remove_perm('ldt_utils.view_media', everyone, media)
assign_perm_to_obj(content, content_form.cleaned_data['read_list'], content_form.cleaned_data['write_list'], request.user)
if media:
assign_perm_to_obj(media, content_form.cleaned_data['read_list'], content_form.cleaned_data['write_list'], request.user)
if content_form.cleaned_data['is_public']:
cached_assign('view_content', everyone, content)
else:
remove_perm('ldt_utils.view_content', everyone, content)
if not created:
for attribute in ('iriurl', 'title', 'description', 'duration', 'content_creation_date', 'tags', 'media_obj'):
setattr(content, attribute, content_defaults[attribute])
if request.user.is_staff and content_defaults.has_key('front_project'):
content.front_project = content_defaults['front_project']
try:
content.save()
picture_form.model = content
picture_form.save()
form_status = 'saved'
media_form = MediaForm(instance=media, prefix="media")
content_form = ContentForm(instance=content, prefix="content")
picture_form = PictureForm()
except:
transaction_succeed = False
else:
form_status = 'error'
else:
form_status = 'empty'
initial_c = { 'media_input_type':"link"}
initial_m = {}
if instance_media:
initial_m['media_public'] = instance_media.is_public
else:
initial_m['media_public'] = True
if instance_content:
initial_c['is_public'] = instance_content.is_public
else:
initial_c['is_public'] = True
content_form = ContentForm(prefix="content", instance=instance_content, initial=initial_c)
media_form = MediaForm(prefix="media", instance=instance_media, initial=initial_m)
picture_form = PictureForm()
if instance_content is not None:
content_form.media_input_type = "link"
if request.user.is_staff:
content_form.fields['front_project'].queryset = Project.objects.filter(contents__in=[instance_content])
if transaction_succeed:
#Try to make sure the commit succeeded or not.
try:
transaction.commit()
except:
transaction.rollback()
errors_transaction.append(_("Commit of the content creation failed"))
return False, False, False, False, False, errors_transaction
else:
transaction.rollback()
errors_transaction.append(_("Content creation failure"))
return False, False, False, False, False, errors_transaction
return content_form, media_form, picture_form, form_status, current_front_project, errors_transaction
@login_required
def write_content(request, iri_id=None):
submit_action = request.REQUEST.get("submit_button", False)
member_list = admin_list = []
current_front_project = None
deleted = None
if submit_action == "prepare_delete":
errors, titles, message_temp = prepare_delete_content(request, iri_id)
if errors and len(errors) > 0:
message = ungettext("There is %(count)d error when deleting content", "There are %(count)d errors when deleting content", len(errors)) % { 'count': len(errors)}
title_msg = _('title error deleting content')
else:
if len(message_temp)>0:
message = message_temp
else:
message = _("Confirm delete content %(titles)s") % { 'titles' : ",".join(titles) }
title_msg = _("confirm delete content")
return render_to_response('ldt/ldt_utils/error_confirm.html', {'errors':errors, 'message':message, 'title': title_msg}, context_instance=RequestContext(request))
elif submit_action == "delete":
deleted, errors_transaction = delete_content(request, iri_id)
content_form = ContentForm()
form_status = "deleted"
elif submit_action == "prepare_reset":
errors=[]
content_temp = Content.objects.get(iri_id=iri_id)
if content_temp.front_project is not None:
if content_temp.front_project.state==2:
errors.append(_("Please unpublish the front project %(title)s") % {'title':content_temp.front_project.title})
message=_("The front project is published")
title = _("confirm reset")
else:
message = _("please confirm reseting project %(title)s") % {'title':content_temp.front_project.title}
title = _("confirm reset")
else:
content_temp.create_front_project()
return redirect("root-view")
return render_to_response('ldt/ldt_utils/reset_confirm.html', {'errors':errors, 'message':message, 'title': title}, context_instance=RequestContext(request))
elif submit_action == "reset":
#TODO : verifier index de la recherche maj
content = Content.objects.get(iri_id=iri_id)
project_temp = content.front_project
content.create_front_project()
content.save()
project_temp.delete()
return HttpResponseRedirect(reverse('ldt.ldt_utils.views.content.write_content', kwargs={'iri_id':iri_id}))
elif submit_action=="close":
return redirect("root-view")
else:
content_form, media_form, picture_form, form_status, current_front_project, errors_transaction = write_content_base(request, iri_id)
if iri_id:
content_temp = Content.objects.get(iri_id=iri_id)
media_temp = content_temp.media_obj
if media_temp:
member_list, admin_list = get_userlist_model(media_temp, request.user)
else:
member_list, admin_list = get_userlist_model(content_temp, request.user)
# Deleted is False if an error occurred during deletion
if (deleted == False) or (content_form == False and media_form == False and picture_form == False and form_status == False and current_front_project == False):
message=_("An error occurred - Please try again or contact webmaster")
title = _("Error")
return render_to_response('ldt/ldt_utils/error_confirm.html', {'errors':errors_transaction, 'message':message, 'title': title}, context_instance=RequestContext(request))
if iri_id:
create_content_action = reverse('ldt.ldt_utils.views.content.write_content', kwargs={'iri_id':iri_id})
img_container = content_form.instance
else:
create_content_action = reverse('ldt.ldt_utils.views.content.write_content')
img_container = ''
session_key = request.COOKIES[settings.SESSION_COOKIE_NAME]
cookie_name = settings.SESSION_COOKIE_NAME
# Media.safe_objects.all() does not return the good list of media, so we get them from the Content.safe_objects
content_form.fields["media_obj"].queryset = Media.objects.filter(id__in=Content.safe_objects.values_list('media_obj', flat=True))
if form_status=='saved' or form_status=='deleted':
return redirect("root-view")
else:
group_list = Group.objects.all()
group_list = group_list.exclude(name=settings.PUBLIC_GROUP_NAME)
group_list = [{'name': u.name, 'id': u.id, 'type': 'group'} for u in group_list[0:settings.MAX_USERS_SEARCH]]
elem_list = get_userlist(request.user) + group_list
return render_to_response('ldt/ldt_utils/create_content.html', {'content_form': content_form, 'media_form': media_form, 'form_status': form_status, 'create_content_': create_content_action,
'elem_list':elem_list, 'member_list': member_list, 'admin_list': admin_list, 'iri_id': iri_id, 'session_key':session_key,
'cookie_name':cookie_name, 'img_container': img_container, 'profile_picture_form': picture_form,
'current_front_project':current_front_project}, context_instance=RequestContext(request))
@login_required
def prepare_delete_content(request, iri_id=None):
errors = []
titles = []
delete = False
message={}
if not iri_id:
iri_id = request.REQUEST.get("iri_id", None)
if iri_id:
for content in Content.safe_objects.filter(iri_id=iri_id):
titles.append(unicode(content.title))
projects = content.project_set.all()
projects_nb = len(projects)
if projects_nb > 1:
project_titles = map(lambda p: unicode(p.title), projects)
errors.append(ungettext("Content '%(title)s' is referenced by this project : %(project_titles)s. Please delete it beforehand.", "Content '%(title)s' is referenced by %(count)d projects: %(project_titles)s. Please delete them beforehand.", projects_nb) % {'title':unicode(content.title), 'count':projects_nb, 'project_titles': ",".join(project_titles)})
elif projects_nb == 1:
if projects[0].has_annotations():
message = _("The project '%(project_title)s' pointing on the content '%(title)s' has several annotations. Do you want to delete the content and the project anyway ?")% {'project_title':unicode(projects[0].title), 'title':unicode(content.title)}
return errors, titles, message
@login_required
@transaction.commit_manually
def delete_content(request, iri_id=None):
#Delete the project, the media if exists, and the content
errors_transaction=[]
if not iri_id:
iri_id = request.REQUEST.get("iri_id", None)
if iri_id:
content = Content.safe_objects.get(iri_id=iri_id)
try:
if content.media_obj is not None:
contents_media = Content.safe_objects.filter(media_obj = content.media_obj)
#check if the media is ref by severals content
if len(contents_media) < 2:
Media.safe_objects.get(id=content.media_obj.id).delete()
project = content.front_project
content.delete()
if project is not None:
Project.safe_objects.get(ldt_id= project.ldt_id).delete()
except:
content.rollback()
transaction.rollback()
errors_transaction.append(_("Content deletion failure"))
return False, errors_transaction
else:
try:
transaction.commit()
content.commit()
return True, errors_transaction
except:
transaction.rollback()
content.rollback()
errors_transaction.append(_("Commit of the content deletion failed"))
return False, errors_transaction
def upload(request):
if request.method == 'POST':
for field_name in request.FILES:
# We get the file name
source_file = request.FILES[field_name]
source_filename = source_file.name
# We sanitize the file name : no space, only lower case.
source_filename = ldt_utils_path.sanitize_filename(source_filename)
# We create the session temp folder if necessary
if not os.path.exists(os.path.join(settings.STREAM_PATH, "tmp/" + request.COOKIES[settings.SESSION_COOKIE_NAME])):
os.makedirs(os.path.join(settings.STREAM_PATH, "tmp/" + request.COOKIES[settings.SESSION_COOKIE_NAME]))
destination_filepath = os.path.join(settings.STREAM_PATH, "tmp/" + request.COOKIES[settings.SESSION_COOKIE_NAME] + "/", source_filename)
# We delete the existing file if necessary
if os.path.exists(destination_filepath):
os.remove(destination_filepath)
destination_file = open(destination_filepath, "wb")
for chunk in source_file.chunks():
destination_file.write(chunk)
destination_file.close()
# indicate that everything is OK for SWFUpload
return HttpResponse("ok", mimetype="text/plain")
else:
return HttpResponse("notok", mimetype="text/plain")
def remove_temp_file(request):
# The filename arrives with a GET var.
file_path = os.path.join(settings.STREAM_PATH, "tmp/" + request.COOKIES[settings.SESSION_COOKIE_NAME] + "/", ldt_utils_path.sanitize_filename(request.GET["filename"]))
if os.path.exists(file_path):
os.remove(file_path)
return HttpResponse("remove ok", mimetype="text/plain")
def get_duration(request):
try:
# The filename arrives with a GET var.
file_path = os.path.join(settings.STREAM_PATH, "tmp/" + request.COOKIES[settings.SESSION_COOKIE_NAME] + "/", ldt_utils_path.sanitize_filename(request.GET["filename"]))
if hasattr(settings, 'FFMPEG_PATH') and os.path.exists(file_path):
output = str(subprocess.Popen([settings.FFMPEG_PATH, "-i", file_path], stderr=subprocess.PIPE).communicate()[1])
m = re.search("Duration:\s*?([\d.:]+)", output, re.M)
dur_arr = m.group(1).split(":")
td = datetime.timedelta(hours=int(dur_arr[0]), minutes=int(dur_arr[1]), seconds=float(dur_arr[2]))
str_duration = str((td.microseconds + (td.seconds + td.days * 24 * 3600) * 10 ** 6) / 10 ** 3)
return HttpResponse(str_duration, mimetype="text/plain")
else:
return HttpResponse("", mimetype="text/plain")
except Exception as inst:
return HttpResponse(str(inst), mimetype="text/plain")
@login_required
def contents_filter(request, filter_c):
if filter_c and len(filter_c) > 0 and filter_c[0] == '_':
filter_c = filter_c[1:]
num_page = 0
if request.GET.has_key('num_page'):
num_page = int(request.GET["num_page"])
tag_filter = ""
if request.GET.has_key('tag_filter'):
tag_filter = request.GET["tag_filter"]
# We paginate the content list, in case of filter_c or not
if filter_c and not tag_filter :
content_nb = Content.safe_objects.filter(title__icontains=filter_c).count()
nb_ct_pages = int(math.ceil(content_nb / settings.LDT_MAX_CONTENTS_PER_PAGE)) + 1
content_list = Content.safe_objects.filter(title__icontains=filter_c)[(num_page*settings.LDT_MAX_CONTENTS_PER_PAGE):((num_page+1)*settings.LDT_MAX_CONTENTS_PER_PAGE)] #@UndefinedVariable
elif filter_c and tag_filter :
#TaggedItem.objects.get_by_model(Content.objects.all(), '"'+tag_filter+'"')
content_nb = TaggedItem.objects.get_by_model(Content.safe_objects.filter(title__icontains=filter_c), '"'+tag_filter+'"').count()
nb_ct_pages = int(math.ceil(content_nb / settings.LDT_MAX_CONTENTS_PER_PAGE)) + 1
content_list = TaggedItem.objects.get_by_model(Content.safe_objects.filter(title__icontains=filter_c), '"'+tag_filter+'"')[(num_page*settings.LDT_MAX_CONTENTS_PER_PAGE):((num_page+1)*settings.LDT_MAX_CONTENTS_PER_PAGE)] #@UndefinedVariable
elif tag_filter and not filter_c:
content_nb = TaggedItem.objects.get_by_model(Content.safe_objects.all(), '"'+tag_filter+'"').count()
nb_ct_pages = int(math.ceil(content_nb / settings.LDT_MAX_CONTENTS_PER_PAGE)) +1
content_list = TaggedItem.objects.get_by_model(Content.safe_objects.all(), '"'+tag_filter+'"')[(num_page*settings.LDT_MAX_CONTENTS_PER_PAGE):((num_page+1)*settings.LDT_MAX_CONTENTS_PER_PAGE)] #@UndefinedVariable
else:
content_nb, nb_ct_pages, content_list = get_contents_page(num_page, request.user)
#Change attributes with object permissions
content_list = add_change_attr(request.user, content_list)
# Get the all tags list
tag_cloud = get_content_tags()
is_gecko = ((request.META['HTTP_USER_AGENT'].lower().find("firefox")) > -1);
return render_to_response("ldt/ldt_utils/partial/contentslist.html",
{'contents': content_list, 'nb_ct_pages': nb_ct_pages, 'content_nb': content_nb, 'current_content_page':float(num_page),
'tag_cloud': tag_cloud, 'current_content_tag':tag_filter, 'is_gecko': is_gecko
},
context_instance=RequestContext(request))
def get_contents_page(num_page, user):
content_nb = float(Content.safe_objects.count()) #@UndefinedVariable
nb_ct_pages = int(math.ceil(content_nb / settings.LDT_MAX_CONTENTS_PER_PAGE))
content_list = add_change_attr(user, Content.safe_objects.all()[(num_page*settings.LDT_MAX_CONTENTS_PER_PAGE):((num_page+1)*settings.LDT_MAX_CONTENTS_PER_PAGE)]) #@UndefinedVariable
return content_nb, nb_ct_pages, content_list
def get_content_tags(limit=None, steps=10):
if limit is None:
return Tag.objects.cloud_for_model(Content, steps=steps)
else :
return Tag.objects.cloud_for_model(Content, steps=steps)[:limit]