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import re
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from captcha.fields import CaptchaField
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from django import forms
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from django.forms.util import ErrorList
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from django.utils.translation import ugettext_lazy as _
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import time
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from boards.models.post import TITLE_MAX_LENGTH
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from boards.models import User
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from neboard import settings
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from boards import utils
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import boards.settings as board_settings
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LAST_POST_TIME = "last_post_time"
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LAST_LOGIN_TIME = "last_login_time"
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class PlainErrorList(ErrorList):
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def __unicode__(self):
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return self.as_text()
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def as_text(self):
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return ''.join([u'(!) %s ' % e for e in self])
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class NeboardForm(forms.Form):
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def as_p(self):
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"Returns this form rendered as HTML <p>s."
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return self._html_output(
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normal_row='<div class="form-row">'
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'<div class="form-label">'
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'%(label)s'
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'</div>'
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'<div class="form-input">'
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'%(field)s'
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'</div>'
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'%(help_text)s'
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'</div>',
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error_row='<div class="form-errors">%s</div>',
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row_ender='</p>',
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help_text_html=' <span class="helptext">%s</span>',
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errors_on_separate_row=True)
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class PostForm(NeboardForm):
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title = forms.CharField(max_length=TITLE_MAX_LENGTH, required=False,
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label=_('Title'))
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text = forms.CharField(widget=forms.Textarea, required=False,
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label=_('Text'))
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image = forms.ImageField(required=False, label=_('Image'))
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# This field is for spam prevention only
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email = forms.CharField(max_length=100, required=False, label=_('e-mail'),
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widget=forms.TextInput(attrs={
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'class': 'form-email'}))
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session = None
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need_to_ban = False
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def clean_title(self):
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title = self.cleaned_data['title']
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if title:
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if len(title) > TITLE_MAX_LENGTH:
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raise forms.ValidationError(_('Title must have less than %s '
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'characters') %
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str(TITLE_MAX_LENGTH))
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return title
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def clean_text(self):
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text = self.cleaned_data['text']
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if text:
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if len(text) > board_settings.MAX_TEXT_LENGTH:
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raise forms.ValidationError(_('Text must have less than %s '
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'characters') %
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str(board_settings
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.MAX_TEXT_LENGTH))
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return text
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def clean_image(self):
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image = self.cleaned_data['image']
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if image:
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if image._size > board_settings.MAX_IMAGE_SIZE:
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raise forms.ValidationError(
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_('Image must be less than %s bytes')
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% str(board_settings.MAX_IMAGE_SIZE))
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return image
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def clean(self):
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cleaned_data = super(PostForm, self).clean()
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if not self.session:
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raise forms.ValidationError('Humans have sessions')
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if cleaned_data['email']:
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self.need_to_ban = True
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raise forms.ValidationError('A human cannot enter a hidden field')
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if not self.errors:
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self._clean_text_image()
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if not self.errors and self.session:
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self._validate_posting_speed()
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return cleaned_data
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def _clean_text_image(self):
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text = self.cleaned_data.get('text')
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image = self.cleaned_data.get('image')
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if (not text) and (not image):
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error_message = _('Either text or image must be entered.')
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self._errors['text'] = self.error_class([error_message])
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def _validate_posting_speed(self):
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can_post = True
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if LAST_POST_TIME in self.session:
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now = time.time()
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last_post_time = self.session[LAST_POST_TIME]
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current_delay = int(now - last_post_time)
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if current_delay < settings.POSTING_DELAY:
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error_message = _('Wait %s seconds after last posting') % str(
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settings.POSTING_DELAY - current_delay)
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self._errors['text'] = self.error_class([error_message])
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can_post = False
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if can_post:
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self.session[LAST_POST_TIME] = time.time()
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class ThreadForm(PostForm):
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regex_tags = re.compile(ur'^[\w\s\d]+$', re.UNICODE)
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tags = forms.CharField(max_length=100, label=_('Tags'))
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def clean_tags(self):
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tags = self.cleaned_data['tags']
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if tags:
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if not self.regex_tags.match(tags):
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raise forms.ValidationError(
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_('Inappropriate characters in tags.'))
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return tags
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def clean(self):
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cleaned_data = super(ThreadForm, self).clean()
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return cleaned_data
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class PostCaptchaForm(PostForm):
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captcha = CaptchaField()
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def __init__(self, *args, **kwargs):
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self.request = kwargs['request']
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del kwargs['request']
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super(PostCaptchaForm, self).__init__(*args, **kwargs)
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def clean(self):
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cleaned_data = super(PostCaptchaForm, self).clean()
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success = self.is_valid()
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utils.update_captcha_access(self.request, success)
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if success:
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return cleaned_data
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else:
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raise forms.ValidationError(_("Captcha validation failed"))
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class ThreadCaptchaForm(ThreadForm):
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captcha = CaptchaField()
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def __init__(self, *args, **kwargs):
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self.request = kwargs['request']
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del kwargs['request']
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super(ThreadCaptchaForm, self).__init__(*args, **kwargs)
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def clean(self):
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cleaned_data = super(ThreadCaptchaForm, self).clean()
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success = self.is_valid()
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utils.update_captcha_access(self.request, success)
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if success:
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return cleaned_data
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else:
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raise forms.ValidationError(_("Captcha validation failed"))
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class SettingsForm(NeboardForm):
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theme = forms.ChoiceField(choices=settings.THEMES,
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label=_('Theme'))
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class ModeratorSettingsForm(SettingsForm):
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moderate = forms.BooleanField(required=False, label=_('Enable moderation '
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'panel'))
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class LoginForm(NeboardForm):
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user_id = forms.CharField()
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session = None
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def clean_user_id(self):
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user_id = self.cleaned_data['user_id']
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if user_id:
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users = User.objects.filter(user_id=user_id)
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if len(users) == 0:
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raise forms.ValidationError(_('No such user found'))
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return user_id
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def _validate_login_speed(self):
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can_post = True
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if LAST_LOGIN_TIME in self.session:
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now = time.time()
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last_login_time = self.session[LAST_LOGIN_TIME]
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current_delay = int(now - last_login_time)
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if current_delay < board_settings.LOGIN_TIMEOUT:
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error_message = _('Wait %s minutes after last login') % str(
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(board_settings.LOGIN_TIMEOUT - current_delay) / 60)
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self._errors['user_id'] = self.error_class([error_message])
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can_post = False
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if can_post:
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self.session[LAST_LOGIN_TIME] = time.time()
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def clean(self):
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if not self.session:
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raise forms.ValidationError('Humans have sessions')
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self._validate_login_speed()
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cleaned_data = super(LoginForm, self).clean()
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return cleaned_data
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