# -*- coding:utf-8 -* # # Copyright 2016,2017,2018 # - Skia # - Sli # # Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM, # http://ae.utbm.fr. # # This program is free software; you can redistribute it and/or modify it under # the terms of the GNU General Public License a 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 General Public License for more # details. # # You should have received a copy of the GNU General Public License along with # this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple # Place - Suite 330, Boston, MA 02111-1307, USA. # # import importlib from django.db import models from django.core.mail import send_mail from django.contrib.auth.models import ( AbstractBaseUser, PermissionsMixin, UserManager, Group as AuthGroup, GroupManager as AuthGroupManager, AnonymousUser as AuthAnonymousUser, ) from django.utils.translation import ugettext_lazy as _ from django.utils import timezone from django.core import validators from django.core.exceptions import ValidationError, PermissionDenied from django.core.urlresolvers import reverse from django.conf import settings from django.db import transaction from django.contrib.staticfiles.storage import staticfiles_storage from django.utils.html import escape from django.utils.functional import cached_property import os from phonenumber_field.modelfields import PhoneNumberField from datetime import datetime, timedelta, date import unicodedata class RealGroupManager(AuthGroupManager): def get_queryset(self): return super(RealGroupManager, self).get_queryset().filter(is_meta=False) class MetaGroupManager(AuthGroupManager): def get_queryset(self): return super(MetaGroupManager, self).get_queryset().filter(is_meta=True) class Group(AuthGroup): is_meta = models.BooleanField( _("meta group status"), default=False, help_text=_("Whether a group is a meta group or not"), ) description = models.CharField(_("description"), max_length=60) class Meta: ordering = ["name"] def get_absolute_url(self): """ This is needed for black magic powered UpdateView's children """ return reverse("core:group_list") class MetaGroup(Group): objects = MetaGroupManager() class Meta: proxy = True def __init__(self, *args, **kwargs): super(MetaGroup, self).__init__(*args, **kwargs) self.is_meta = True class RealGroup(Group): objects = RealGroupManager() class Meta: proxy = True def validate_promo(value): start_year = settings.SITH_SCHOOL_START_YEAR delta = (date.today() + timedelta(days=180)).year - start_year if value < 0 or delta < value: raise ValidationError( _("%(value)s is not a valid promo (between 0 and %(end)s)"), params={"value": value, "end": delta}, ) class User(AbstractBaseUser): """ Defines the base user class, useable in every app This is almost the same as the auth module AbstractUser since it inherits from it, but some fields are required, and the username is generated automatically with the name of the user (see generate_username()). Added field: nick_name, date_of_birth Required fields: email, first_name, last_name, date_of_birth """ username = models.CharField( _("username"), max_length=254, unique=True, help_text=_( "Required. 254 characters or fewer. Letters, digits and ./+/-/_ only." ), validators=[ validators.RegexValidator( r"^[\w.+-]+$", _( "Enter a valid username. This value may contain only " "letters, numbers " "and ./+/-/_ characters." ), ) ], error_messages={"unique": _("A user with that username already exists.")}, ) first_name = models.CharField(_("first name"), max_length=64) last_name = models.CharField(_("last name"), max_length=64) email = models.EmailField(_("email address"), unique=True) date_of_birth = models.DateField(_("date of birth"), blank=True, null=True) nick_name = models.CharField(_("nick name"), max_length=64, null=True, blank=True) is_staff = models.BooleanField( _("staff status"), default=False, help_text=_("Designates whether the user can log into this admin site."), ) is_active = models.BooleanField( _("active"), default=True, help_text=_( "Designates whether this user should be treated as active. " "Unselect this instead of deleting accounts." ), ) date_joined = models.DateField(_("date joined"), auto_now_add=True) last_update = models.DateTimeField(_("last update"), auto_now=True) is_superuser = models.BooleanField( _("superuser"), default=False, help_text=_("Designates whether this user is a superuser. "), ) groups = models.ManyToManyField(RealGroup, related_name="users", blank=True) home = models.OneToOneField( "SithFile", related_name="home_of", verbose_name=_("home"), null=True, blank=True, on_delete=models.SET_NULL, ) profile_pict = models.OneToOneField( "SithFile", related_name="profile_of", verbose_name=_("profile"), null=True, blank=True, on_delete=models.SET_NULL, ) avatar_pict = models.OneToOneField( "SithFile", related_name="avatar_of", verbose_name=_("avatar"), null=True, blank=True, on_delete=models.SET_NULL, ) scrub_pict = models.OneToOneField( "SithFile", related_name="scrub_of", verbose_name=_("scrub"), null=True, blank=True, on_delete=models.SET_NULL, ) sex = models.CharField( _("sex"), max_length=10, choices=[("MAN", _("Man")), ("WOMAN", _("Woman"))], default="MAN", ) tshirt_size = models.CharField( _("tshirt size"), max_length=5, choices=[ ("-", _("-")), ("XS", _("XS")), ("S", _("S")), ("M", _("M")), ("L", _("L")), ("XL", _("XL")), ("XXL", _("XXL")), ("XXXL", _("XXXL")), ], default="-", ) role = models.CharField( _("role"), max_length=15, choices=[ ("STUDENT", _("Student")), ("ADMINISTRATIVE", _("Administrative agent")), ("TEACHER", _("Teacher")), ("AGENT", _("Agent")), ("DOCTOR", _("Doctor")), ("FORMER STUDENT", _("Former student")), ("SERVICE", _("Service")), ], blank=True, default="", ) department = models.CharField( _("department"), max_length=15, choices=settings.SITH_PROFILE_DEPARTMENTS, default="NA", blank=True, ) dpt_option = models.CharField( _("dpt option"), max_length=32, blank=True, default="" ) semester = models.CharField(_("semester"), max_length=5, blank=True, default="") quote = models.CharField(_("quote"), max_length=256, blank=True, default="") school = models.CharField(_("school"), max_length=80, blank=True, default="") promo = models.IntegerField( _("promo"), validators=[validate_promo], null=True, blank=True ) forum_signature = models.TextField( _("forum signature"), max_length=256, blank=True, default="" ) second_email = models.EmailField(_("second email address"), null=True, blank=True) phone = PhoneNumberField(_("phone"), null=True, blank=True) parent_phone = PhoneNumberField(_("parent phone"), null=True, blank=True) address = models.CharField(_("address"), max_length=128, blank=True, default="") parent_address = models.CharField( _("parent address"), max_length=128, blank=True, default="" ) is_subscriber_viewable = models.BooleanField( _("is subscriber viewable"), default=True ) godfathers = models.ManyToManyField("User", related_name="godchildren", blank=True) objects = UserManager() USERNAME_FIELD = "username" # REQUIRED_FIELDS = ['email'] def has_module_perms(self, package_name): return self.is_active def has_perm(self, perm, obj=None): return self.is_active and self.is_superuser def get_absolute_url(self): """ This is needed for black magic powered UpdateView's children """ return reverse("core:user_profile", kwargs={"user_id": self.pk}) def __str__(self): return self.get_display_name() def to_dict(self): return self.__dict__ @cached_property def was_subscribed(self): return self.subscriptions.exists() @cached_property def is_subscribed(self): s = self.subscriptions.filter( subscription_start__lte=timezone.now(), subscription_end__gte=timezone.now() ) return s.exists() _club_memberships = {} _group_names = {} _group_ids = {} def is_in_group(self, group_name): """If the user is in the group passed in argument (as string or by id)""" group_id = 0 g = None if isinstance(group_name, int): # Handle the case where group_name is an ID if group_name in User._group_ids.keys(): g = User._group_ids[group_name] else: g = Group.objects.filter(id=group_name).first() User._group_ids[group_name] = g else: if group_name in User._group_names.keys(): g = User._group_names[group_name] else: g = Group.objects.filter(name=group_name).first() User._group_names[group_name] = g if g: group_name = g.name group_id = g.id else: return False if group_id == settings.SITH_GROUP_PUBLIC_ID: return True if group_id == settings.SITH_GROUP_SUBSCRIBERS_ID: return self.is_subscribed if group_id == settings.SITH_GROUP_OLD_SUBSCRIBERS_ID: return self.was_subscribed if ( group_name == settings.SITH_MAIN_MEMBERS_GROUP ): # We check the subscription if asked return self.is_subscribed if group_name[-len(settings.SITH_BOARD_SUFFIX) :] == settings.SITH_BOARD_SUFFIX: name = group_name[: -len(settings.SITH_BOARD_SUFFIX)] if name in User._club_memberships.keys(): mem = User._club_memberships[name] else: from club.models import Club c = Club.objects.filter(unix_name=name).first() mem = c.get_membership_for(self) User._club_memberships[name] = mem if mem: return mem.role > settings.SITH_MAXIMUM_FREE_ROLE return False if ( group_name[-len(settings.SITH_MEMBER_SUFFIX) :] == settings.SITH_MEMBER_SUFFIX ): name = group_name[: -len(settings.SITH_MEMBER_SUFFIX)] if name in User._club_memberships.keys(): mem = User._club_memberships[name] else: from club.models import Club c = Club.objects.filter(unix_name=name).first() mem = c.get_membership_for(self) User._club_memberships[name] = mem if mem: return True return False if group_id == settings.SITH_GROUP_ROOT_ID and self.is_superuser: return True return group_name in self.cached_groups_names @cached_property def cached_groups_names(self): return [g.name for g in self.groups.all()] @cached_property def is_root(self): return ( self.is_superuser or self.groups.filter(id=settings.SITH_GROUP_ROOT_ID).exists() ) @cached_property def is_board_member(self): from club.models import Club return ( Club.objects.filter(unix_name=settings.SITH_MAIN_CLUB["unix_name"]) .first() .has_rights_in_club(self) ) @cached_property def can_create_subscription(self): from club.models import Club for club in Club.objects.filter( id__in=settings.SITH_CAN_CREATE_SUBSCRIPTIONS ).all(): if club.has_rights_in_club(self): return True return False @cached_property def is_launderette_manager(self): from club.models import Club return ( Club.objects.filter( unix_name=settings.SITH_LAUNDERETTE_MANAGER["unix_name"] ) .first() .get_membership_for(self) ) @cached_property def is_banned_alcohol(self): return self.is_in_group(settings.SITH_GROUP_BANNED_ALCOHOL_ID) @cached_property def is_banned_counter(self): return self.is_in_group(settings.SITH_GROUP_BANNED_COUNTER_ID) def save(self, *args, **kwargs): create = False with transaction.atomic(): if self.id: old = User.objects.filter(id=self.id).first() if old and old.username != self.username: self._change_username(self.username) else: create = True super(User, self).save(*args, **kwargs) if ( create and settings.IS_OLD_MYSQL_PRESENT ): # Create user on the old site: TODO remove me! import MySQLdb try: db = MySQLdb.connect(**settings.OLD_MYSQL_INFOS) c = db.cursor() c.execute( """INSERT INTO utilisateurs (id_utilisateur, nom_utl, prenom_utl, email_utl, hash_utl, ae_utl) VALUES (%s, %s, %s, %s, %s, %s)""", ( self.id, self.last_name, self.first_name, self.email, "valid", "0", ), ) db.commit() except Exception as e: with open(settings.BASE_DIR + "/user_fail.log", "a") as f: print( "FAIL to add user %s (%s %s - %s) to old site" % (self.id, self.first_name, self.last_name, self.email), file=f, ) print("Reason: %s" % (repr(e)), file=f) db.rollback() def make_home(self): if self.home is None: home_root = SithFile.objects.filter(parent=None, name="users").first() if home_root is not None: home = SithFile(parent=home_root, name=self.username, owner=self) home.save() self.home = home self.save() def _change_username(self, new_name): u = User.objects.filter(username=new_name).first() if u is None: if self.home: self.home.name = new_name self.home.save() else: raise ValidationError(_("A user with that username already exists")) def get_profile(self): return { "last_name": self.last_name, "first_name": self.first_name, "nick_name": self.nick_name, "date_of_birth": self.date_of_birth, } def get_full_name(self): """ Returns the first_name plus the last_name, with a space in between. """ full_name = "%s %s" % (self.first_name, self.last_name) return full_name.strip() def get_short_name(self): "Returns the short name for the user." if self.nick_name: return self.nick_name return self.first_name + " " + self.last_name def get_display_name(self): """ Returns the display name of the user. A nickname if possible, otherwise, the full name """ if self.nick_name: return "%s (%s)" % (self.get_full_name(), self.nick_name) return self.get_full_name() def get_age(self): """ Returns the age """ today = timezone.now() born = self.date_of_birth return ( today.year - born.year - ((today.month, today.day) < (born.month, born.day)) ) def email_user(self, subject, message, from_email=None, **kwargs): """ Sends an email to this User. """ if from_email is None: from_email = settings.DEFAULT_FROM_EMAIL send_mail(subject, message, from_email, [self.email], **kwargs) def generate_username(self): """ Generates a unique username based on the first and last names. For example: Guy Carlier gives gcarlier, and gcarlier1 if the first one exists Returns the generated username """ def remove_accents(data): return "".join( x for x in unicodedata.normalize("NFKD", data) if unicodedata.category(x)[0] == "L" ).lower() user_name = ( remove_accents(self.first_name[0] + self.last_name) .encode("ascii", "ignore") .decode("utf-8") ) un_set = [u.username for u in User.objects.all()] if user_name in un_set: i = 1 while user_name + str(i) in un_set: i += 1 user_name += str(i) self.username = user_name return user_name def is_owner(self, obj): """ Determine if the object is owned by the user """ if hasattr(obj, "is_owned_by") and obj.is_owned_by(self): return True if hasattr(obj, "owner_group") and self.is_in_group(obj.owner_group.name): return True if self.is_superuser or self.is_in_group(settings.SITH_GROUP_ROOT_ID): return True return False def can_edit(self, obj): """ Determine if the object can be edited by the user """ if hasattr(obj, "can_be_edited_by") and obj.can_be_edited_by(self): return True if hasattr(obj, "edit_groups"): for g in obj.edit_groups.all(): if self.is_in_group(g.name): return True if isinstance(obj, User) and obj == self: return True if self.is_owner(obj): return True return False def can_view(self, obj): """ Determine if the object can be viewed by the user """ if hasattr(obj, "can_be_viewed_by") and obj.can_be_viewed_by(self): return True if hasattr(obj, "view_groups"): for g in obj.view_groups.all(): if self.is_in_group(g.name): return True if self.can_edit(obj): return True return False def can_be_edited_by(self, user): return user.is_in_group(settings.SITH_MAIN_BOARD_GROUP) or user.is_root def can_be_viewed_by(self, user): return (user.was_subscribed and self.is_subscriber_viewable) or user.is_root def get_mini_item(self): return """
%s %s """ % ( self.profile_pict.get_download_url() if self.profile_pict else staticfiles_storage.url("core/img/unknown.jpg"), _("Profile"), escape(self.get_display_name()), ) @cached_property def subscribed(self): return self.is_in_group(settings.SITH_MAIN_MEMBERS_GROUP) @cached_property def preferences(self): try: return self._preferences except: prefs = Preferences(user=self) prefs.save() return prefs @cached_property def forum_infos(self): try: return self._forum_infos except: from forum.models import ForumUserInfo infos = ForumUserInfo(user=self) infos.save() return infos @cached_property def clubs_with_rights(self): return [ m.club.id for m in self.memberships.filter( models.Q(end_date__isnull=True) | models.Q(end_date__gte=timezone.now()) ).all() if m.club.has_rights_in_club(self) ] @cached_property def is_com_admin(self): return self.is_in_group(settings.SITH_GROUP_COM_ADMIN_ID) class AnonymousUser(AuthAnonymousUser): def __init__(self, request): super(AnonymousUser, self).__init__() @property def can_create_subscription(self): return False @property def was_subscribed(self): return False @property def is_subscribed(self): return False @property def subscribed(self): return False @property def is_root(self): return False @property def is_board_member(self): return False @property def is_launderette_manager(self): return False @property def is_banned_alcohol(self): return False @property def is_banned_counter(self): return False @property def forum_infos(self): raise PermissionDenied @property def favorite_topics(self): raise PermissionDenied def is_in_group(self, group_name): """ The anonymous user is only the public group """ group_id = 0 if isinstance(group_name, int): # Handle the case where group_name is an ID g = Group.objects.filter(id=group_name).first() if g: group_name = g.name group_id = g.id else: return False if group_id == settings.SITH_GROUP_PUBLIC_ID: return True return False def is_owner(self, obj): return False def can_edit(self, obj): return False def can_view(self, obj): if ( hasattr(obj, "view_groups") and obj.view_groups.filter(id=settings.SITH_GROUP_PUBLIC_ID).exists() ): return True if hasattr(obj, "can_be_viewed_by") and obj.can_be_viewed_by(self): return True return False def get_display_name(self): return _("Visitor") class Preferences(models.Model): user = models.OneToOneField(User, related_name="_preferences") receive_weekmail = models.BooleanField( _("do you want to receive the weekmail"), default=False ) show_my_stats = models.BooleanField(_("show your stats to others"), default=False) notify_on_click = models.BooleanField( _("get a notification for every click"), default=False ) notify_on_refill = models.BooleanField( _("get a notification for every refilling"), default=False ) def get_display_name(self): return self.user.get_display_name() def get_absolute_url(self): return self.user.get_absolute_url() def get_directory(instance, filename): return ".{0}/{1}".format(instance.get_parent_path(), filename) def get_compressed_directory(instance, filename): return "./.compressed/{0}/{1}".format(instance.get_parent_path(), filename) def get_thumbnail_directory(instance, filename): return "./.thumbnails/{0}/{1}".format(instance.get_parent_path(), filename) class SithFile(models.Model): name = models.CharField(_("file name"), max_length=256, blank=False) parent = models.ForeignKey( "self", related_name="children", verbose_name=_("parent"), null=True, blank=True ) file = models.FileField( upload_to=get_directory, verbose_name=_("file"), max_length=256, null=True, blank=True, ) compressed = models.FileField( upload_to=get_compressed_directory, verbose_name=_("compressed file"), max_length=256, null=True, blank=True, ) thumbnail = models.FileField( upload_to=get_thumbnail_directory, verbose_name=_("thumbnail"), max_length=256, null=True, blank=True, ) owner = models.ForeignKey(User, related_name="owned_files", verbose_name=_("owner")) edit_groups = models.ManyToManyField( Group, related_name="editable_files", verbose_name=_("edit group"), blank=True ) view_groups = models.ManyToManyField( Group, related_name="viewable_files", verbose_name=_("view group"), blank=True ) is_folder = models.BooleanField(_("is folder"), default=True) mime_type = models.CharField(_("mime type"), max_length=30) size = models.IntegerField(_("size"), default=0) date = models.DateTimeField(_("date"), default=timezone.now) is_moderated = models.BooleanField(_("is moderated"), default=False) moderator = models.ForeignKey( User, related_name="moderated_files", verbose_name=_("owner"), null=True, blank=True, ) asked_for_removal = models.BooleanField(_("asked for removal"), default=False) is_in_sas = models.BooleanField( _("is in the SAS"), default=False ) # Allows to query this flag, updated at each call to save() class Meta: verbose_name = _("file") def is_owned_by(self, user): if hasattr(self, "profile_of") and user.is_in_group( settings.SITH_MAIN_BOARD_GROUP ): return True if user.is_in_group(settings.SITH_GROUP_COM_ADMIN_ID): return True if self.is_in_sas and user.is_in_group(settings.SITH_GROUP_SAS_ADMIN_ID): return True return user.id == self.owner.id def can_be_viewed_by(self, user): if hasattr(self, "profile_of"): return user.can_view(self.profile_of) if hasattr(self, "avatar_of"): return user.can_view(self.avatar_of) if hasattr(self, "scrub_of"): return user.can_view(self.scrub_of) return False def delete(self): for c in self.children.all(): c.delete() self.file.delete() if self.compressed: self.compressed.delete() if self.thumbnail: self.thumbnail.delete() return super(SithFile, self).delete() def clean(self): """ Cleans up the file """ super(SithFile, self).clean() if "/" in self.name: raise ValidationError(_("Character '/' not authorized in name")) if self == self.parent: raise ValidationError(_("Loop in folder tree"), code="loop") if self == self.parent or ( self.parent is not None and self in self.get_parent_list() ): raise ValidationError(_("Loop in folder tree"), code="loop") if self.parent and self.parent.is_file: raise ValidationError( _("You can not make a file be a children of a non folder file") ) if ( self.parent is None and SithFile.objects.exclude(id=self.id) .filter(parent=None, name=self.name) .exists() ) or ( self.parent and self.parent.children.exclude(id=self.id).filter(name=self.name).exists() ): raise ValidationError(_("Duplicate file"), code="duplicate") if self.is_folder: if self.file: try: import imghdr if imghdr.what(None, self.file.read()) not in [ "gif", "png", "jpeg", ]: self.file.delete() self.file = None except: self.file = None self.mime_type = "inode/directory" if self.is_file and (self.file is None or self.file == ""): raise ValidationError(_("You must provide a file")) def save(self, *args, **kwargs): sas = SithFile.objects.filter(id=settings.SITH_SAS_ROOT_DIR_ID).first() self.is_in_sas = sas in self.get_parent_list() copy_rights = False if self.id is None: copy_rights = True super(SithFile, self).save(*args, **kwargs) if copy_rights: self.copy_rights() if self.is_in_sas: for u in ( RealGroup.objects.filter(id=settings.SITH_GROUP_SAS_ADMIN_ID) .first() .users.all() ): Notification( user=u, url=reverse("sas:moderation"), type="SAS_MODERATION", param="1", ).save() def apply_rights_recursively(self, only_folders=False): children = self.children.all() if only_folders: children = children.filter(is_folder=True) for c in children: c.copy_rights() c.apply_rights_recursively(only_folders) def copy_rights(self): """Copy, if possible, the rights of the parent folder""" if self.parent is not None: self.edit_groups = self.parent.edit_groups.all() self.view_groups = self.parent.view_groups.all() self.save() def move_to(self, parent): """ Move a file to a new parent. `parent` must be a SithFile with the `is_folder=True` property. Otherwise, this function doesn't change anything. This is done only at the DB level, so that it's very fast for the user. Indeed, this function doesn't modify SithFiles recursively, so it stays efficient even with top-level folders. """ if not parent.is_folder: return self.parent = parent self.clean() self.save() def _repair_fs(self): """ This function rebuilds recursively the filesystem as it should be regarding the DB tree. """ if self.is_folder: for c in self.children.all(): c._repair_fs() return elif not self._check_path_consistence(): # First get future parent path and the old file name # Prepend "." so that we match all relative handling of Django's # file storage parent_path = "." + self.parent.get_full_path() parent_full_path = settings.MEDIA_ROOT + parent_path print("Parent full path: %s" % parent_full_path) os.makedirs(parent_full_path, exist_ok=True) old_path = self.file.name # Should be relative: "./users/skia/bleh.jpg" new_path = "." + self.get_full_path() print("Old path: %s " % old_path) print("New path: %s " % new_path) try: # Make this atomic, so that a FS problem rolls back the DB change with transaction.atomic(): # Set the new filesystem path self.file.name = new_path self.save() print("New file path: %s " % self.file.path) # Really move at the FS level if os.path.exists(parent_full_path): os.rename( settings.MEDIA_ROOT + old_path, settings.MEDIA_ROOT + new_path, ) # Empty directories may remain, but that's not really a # problem, and that can be solved with a simple shell # command: `find . -type d -empty -delete` except Exception as e: print("This file likely had a problem. Here is the exception:") print(repr(e)) print("-" * 80) def _check_path_consistence(self): file_path = str(self.file) file_full_path = settings.MEDIA_ROOT + file_path db_path = ".%s" % self.get_full_path() if not os.path.exists(file_full_path): print("%s: WARNING: real file does not exists!" % self.id) print("file path: %s" % file_path, end="") print(" db path: %s" % db_path) return False if file_path != db_path: print("%s: " % self.id, end="") print("file path: %s" % file_path, end="") print(" db path: %s" % db_path) return False print("%s OK (%s)" % (self.id, file_path)) return True def _check_fs(self): if self.is_folder: for c in self.children.all(): c._check_fs() return else: self._check_path_consistence() def __getattribute__(self, attr): if attr == "is_file": return not self.is_folder else: return super(SithFile, self).__getattribute__(attr) @cached_property def as_picture(self): from sas.models import Picture return Picture.objects.filter(id=self.id).first() @cached_property def as_album(self): from sas.models import Album return Album.objects.filter(id=self.id).first() def __str__(self): if self.is_folder: return _("Folder: ") + self.name else: return _("File: ") + self.name def get_parent_list(self): l = [] p = self.parent while p is not None: l.append(p) p = p.parent return l def get_parent_path(self): return "/" + "/".join([p.name for p in self.get_parent_list()[::-1]]) def get_full_path(self): return self.get_parent_path() + "/" + self.name def get_display_name(self): return self.name def get_download_url(self): return reverse("core:download", kwargs={"file_id": self.id}) def __str__(self): return self.get_parent_path() + "/" + self.name class LockError(Exception): """There was a lock error on the object""" pass class AlreadyLocked(LockError): """The object is already locked""" pass class NotLocked(LockError): """The object is not locked""" pass class Page(models.Model): """ The page class to build a Wiki Each page may have a parent and it's URL is of the form my.site/page/// It has an ID field, but don't use it, since it's only there for DB part, and because compound primary key is awkward! Prefere querying pages with Page.get_page_by_full_name() Be careful with the _full_name attribute: this field may not be valid until you call save(). It's made for fast query, but don't rely on it when playing with a Page object, use get_full_name() instead! """ name = models.CharField( _("page unix name"), max_length=30, validators=[ validators.RegexValidator( r"^[a-zA-Z0-9][a-zA-Z0-9._-]*[a-zA-Z0-9]$", _( "Enter a valid page name. This value may contain only " "unaccented letters, numbers " "and ./+/-/_ characters." ), ) ], blank=False, ) parent = models.ForeignKey( "self", related_name="children", verbose_name=_("parent"), null=True, blank=True, on_delete=models.SET_NULL, ) # Attention: this field may not be valid until you call save(). It's made for fast query, but don't rely on it when # playing with a Page object, use get_full_name() instead! _full_name = models.CharField(_("page name"), max_length=255, blank=True) # This function prevents generating migration upon settings change def get_default_owner_group(): return settings.SITH_GROUP_ROOT_ID owner_group = models.ForeignKey( Group, related_name="owned_page", verbose_name=_("owner group"), default=get_default_owner_group, ) edit_groups = models.ManyToManyField( Group, related_name="editable_page", verbose_name=_("edit group"), blank=True ) view_groups = models.ManyToManyField( Group, related_name="viewable_page", verbose_name=_("view group"), blank=True ) lock_user = models.ForeignKey( User, related_name="locked_pages", verbose_name=_("lock user"), blank=True, null=True, default=None, ) lock_timeout = models.DateTimeField( _("lock_timeout"), null=True, blank=True, default=None ) class Meta: unique_together = ("name", "parent") permissions = ( ("change_prop_page", "Can change the page's properties (groups, ...)"), ("view_page", "Can view the page"), ) @staticmethod def get_page_by_full_name(name): """ Quicker to get a page with that method rather than building the request every time """ return Page.objects.filter(_full_name=name).first() def __init__(self, *args, **kwargs): super(Page, self).__init__(*args, **kwargs) def clean(self): """ Cleans up only the name for the moment, but this can be used to make any treatment before saving the object """ if "/" in self.name: self.name = self.name.split("/")[-1] if ( Page.objects.exclude(pk=self.pk) .filter(_full_name=self.get_full_name()) .exists() ): raise ValidationError(_("Duplicate page"), code="duplicate") super(Page, self).clean() if self.parent is not None and self in self.get_parent_list(): raise ValidationError(_("Loop in page tree"), code="loop") def can_be_edited_by(self, user): if hasattr(self, "club") and self.club.can_be_edited_by(user): # Override normal behavior for clubs return True if self.name == settings.SITH_CLUB_ROOT_PAGE and user.is_board_member: return True return False def can_be_viewed_by(self, user): if self.is_club_page: return True return False def get_parent_list(self): l = [] p = self.parent while p is not None: l.append(p) p = p.parent return l def save(self, *args, **kwargs): """ Performs some needed actions before and after saving a page in database """ locked = kwargs.pop("force_lock", False) if not locked: locked = self.is_locked() if not locked: raise NotLocked("The page is not locked and thus can not be saved") self.full_clean() if not self.id: super(Page, self).save( *args, **kwargs ) # Save a first time to correctly set _full_name # This reset the _full_name just before saving to maintain a coherent field quicker for queries than the # recursive method # It also update all the children to maintain correct names self._full_name = self.get_full_name() for c in self.children.all(): c.save() super(Page, self).save(*args, **kwargs) self.unset_lock() def is_locked(self): """ Is True if the page is locked, False otherwise This is where the timeout is handled, so a locked page for which the timeout is reach will be unlocked and this function will return False """ if self.lock_timeout and ( timezone.now() - self.lock_timeout > timedelta(minutes=5) ): # print("Lock timed out") self.unset_lock() return ( self.lock_user and self.lock_timeout and (timezone.now() - self.lock_timeout < timedelta(minutes=5)) ) def set_lock(self, user): """ Sets a lock on the current page or raise an AlreadyLocked exception """ if self.is_locked() and self.get_lock() != user: raise AlreadyLocked("The page is already locked by someone else") self.lock_user = user self.lock_timeout = timezone.now() super(Page, self).save() # print("Locking page") def set_lock_recursive(self, user): """ Locks recursively all the child pages for editing properties """ for p in self.children.all(): p.set_lock_recursive(user) self.set_lock(user) def unset_lock_recursive(self): """ Unlocks recursively all the child pages """ for p in self.children.all(): p.unset_lock_recursive() self.unset_lock() def unset_lock(self): """Always try to unlock, even if there is no lock""" self.lock_user = None self.lock_timeout = None super(Page, self).save() # print("Unlocking page") def get_lock(self): """ Returns the page's mutex containing the time and the user in a dict """ if self.lock_user: return self.lock_user raise NotLocked("The page is not locked and thus can not return its user") def get_absolute_url(self): """ This is needed for black magic powered UpdateView's children """ return reverse("core:page", kwargs={"page_name": self._full_name}) def __str__(self): return self.get_full_name() def get_full_name(self): """ Computes the real full_name of the page based on its name and its parent's name You can and must rely on this function when working on a page object that is not freshly fetched from the DB (For example when treating a Page object coming from a form) """ if self.parent is None: return self.name return "/".join([self.parent.get_full_name(), self.name]) def get_display_name(self): try: return self.revisions.last().title except: return self.name @cached_property def is_club_page(self): club_root_page = Page.objects.filter(name=settings.SITH_CLUB_ROOT_PAGE).first() return club_root_page is not None and ( self == club_root_page or club_root_page in self.get_parent_list() ) @cached_property def need_club_redirection(self): return self.is_club_page and self.name != settings.SITH_CLUB_ROOT_PAGE def delete(self): self.unset_lock_recursive() self.set_lock_recursive(User.objects.get(id=0)) for child in self.children.all(): child.parent = self.parent child.save() child.unset_lock_recursive() super(Page, self).delete() class PageRev(models.Model): """ This is the true content of the page. Each page object has a revisions field that is a list of PageRev, ordered by date. my_page.revisions.last() gives the PageRev object that is the most up-to-date, and thus, is the real content of the page. The content is in PageRev.title and PageRev.content . """ revision = models.IntegerField(_("revision")) title = models.CharField(_("page title"), max_length=255, blank=True) content = models.TextField(_("page content"), blank=True) date = models.DateTimeField(_("date"), auto_now=True) author = models.ForeignKey(User, related_name="page_rev") page = models.ForeignKey(Page, related_name="revisions") class Meta: ordering = ["date"] def get_absolute_url(self): """ This is needed for black magic powered UpdateView's children """ return reverse("core:page", kwargs={"page_name": self.page._full_name}) def __str__(self): return str(self.__dict__) def __getattribute__(self, attr): if attr == "owner_group": return self.page.owner_group elif attr == "edit_groups": return self.page.edit_groups elif attr == "view_groups": return self.page.view_groups elif attr == "unset_lock": return self.page.unset_lock else: return object.__getattribute__(self, attr) def can_be_edited_by(self, user): return self.page.can_be_edited_by(user) def save(self, *args, **kwargs): if self.revision is None: self.revision = self.page.revisions.all().count() + 1 super(PageRev, self).save(*args, **kwargs) # Don't forget to unlock, otherwise, people will have to wait for the page's timeout self.page.unset_lock() class Notification(models.Model): user = models.ForeignKey(User, related_name="notifications") url = models.CharField(_("url"), max_length=255) param = models.CharField(_("param"), max_length=128, default="") type = models.CharField( _("type"), max_length=32, choices=settings.SITH_NOTIFICATIONS, default="GENERIC" ) date = models.DateTimeField(_("date"), default=timezone.now) viewed = models.BooleanField(_("viewed"), default=False) def __str__(self): if self.param: return self.get_type_display() % self.param return self.get_type_display() def callback(self): # Get the callback defined in settings to update existing # notifications mod_name, func_name = settings.SITH_PERMANENT_NOTIFICATIONS[self.type].rsplit( ".", 1 ) mod = importlib.import_module(mod_name) getattr(mod, func_name)(self) def save(self, *args, **kwargs): if not self.id and self.type in settings.SITH_PERMANENT_NOTIFICATIONS: old_notif = self.user.notifications.filter(type=self.type).last() if old_notif: old_notif.callback() old_notif.save() return super(Notification, self).save(*args, **kwargs) class Gift(models.Model): label = models.CharField(_("label"), max_length=255) date = models.DateTimeField(_("date"), default=timezone.now) user = models.ForeignKey(User, related_name="gifts") def __str__(self): return "%s - %s" % (self.translated_label, self.date.strftime("%d %b %Y")) @property def translated_label(self): translations = [ label[1] for label in settings.SITH_GIFT_LIST if label[0] == self.label ] if len(translations) > 0: return translations[0] return self.label def is_owned_by(self, user): return user.is_board_member or user.is_root