136 lines
4.1 KiB
Python
136 lines
4.1 KiB
Python
# Eos - Verifiable elections
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# Copyright © 2017 RunasSudo (Yingtong Li)
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from eos.core.objects import *
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from eos.base.workflow import *
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class Answer(EmbeddedObject):
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pass
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class EncryptedAnswer(EmbeddedObject):
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pass
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class NullEncryptedAnswer(EncryptedAnswer):
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answer = EmbeddedObjectField()
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def decrypt(self):
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return self.answer
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class Ballot(EmbeddedObject):
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#_id = UUIDField()
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encrypted_answers = EmbeddedObjectListField()
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election_id = UUIDField()
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election_hash = StringField()
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class Vote(EmbeddedObject):
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ballot = EmbeddedObjectField()
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cast_at = DateTimeField()
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class Voter(EmbeddedObject):
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_id = UUIDField()
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votes = EmbeddedObjectListField()
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class User(EmbeddedObject):
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pass
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def generate_password():
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if is_python:
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#__pragma__('skip')
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import random
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return ''.join(random.SystemRandom().choices('23456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz', k=12))
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#__pragma__('noskip')
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else:
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return None
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class EmailUser(User):
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name = StringField()
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email = StringField(is_protected=True)
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password = StringField(is_protected=True, default=generate_password)
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def matched_by(self, other):
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if not isinstance(other, EmailUser):
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return False
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return self.email.lower() == other.email.lower() and self.password == other.password
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def send_email(self, host, port, username, password, from_email, content):
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#__pragma__('skip')
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import smtplib
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#__pragma__('noskip')
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with smtplib.SMTP(host, port) as smtp:
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if username is not None:
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smtp.login(username, password)
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smtp.sendmail(from_email, [self.email], content)
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def email_password(self, host, port, username, password, from_email):
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self.send_email(host, port, username, password, from_email, 'Subject: Registered to vote in {1}\nFrom: {4}\nTo: {2}\n\nDear {0},\n\nYou are registered to vote in the election {1}. Your log in details are as follows:\n\nEmail: {2}\nPassword: {3}'.format(self.name, self.recurse_parents(Election).name, self.email, self.password, from_email))
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class UserVoter(Voter):
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user = EmbeddedObjectField()
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@property
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def name(self):
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return self.user.name
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class Question(EmbeddedObject):
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prompt = StringField()
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class Result(EmbeddedObject):
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pass
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class ApprovalQuestion(Question):
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choices = ListField(StringField())
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min_choices = IntField()
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max_choices = IntField()
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def pretty_answer(self, answer):
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return ', '.join([self.choices[choice] for choice in answer.choices])
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class ApprovalAnswer(Answer):
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choices = ListField(IntField())
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class PreferentialQuestion(Question):
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choices = ListField(StringField())
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min_choices = IntField()
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max_choices = IntField()
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def pretty_answer(self, answer):
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return ', '.join([self.choices[choice] for choice in answer.choices])
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class PreferentialAnswer(Answer):
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choices = ListField(IntField())
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class RawResult(Result):
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answers = EmbeddedObjectListField()
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def count(self):
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combined = []
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for answer in self.answers:
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index = next((i for i, val in enumerate(combined) if val[0] == answer), None)
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if index is None:
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combined.append([answer, 1])
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else:
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combined[index][1] += 1
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combined.sort(key=lambda x: x[1], reverse=True)
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return combined
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class Election(TopLevelObject):
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_id = UUIDField()
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workflow = EmbeddedObjectField(Workflow) # Once saved, we don't care what kind of workflow it is
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name = StringField()
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voters = EmbeddedObjectListField(is_hashed=False)
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questions = EmbeddedObjectListField()
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results = EmbeddedObjectListField(is_hashed=False)
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