mirror of
https://github.com/simple-login/app.git
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145 lines
4.2 KiB
Python
145 lines
4.2 KiB
Python
from typing import Optional
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from sqlalchemy.exc import IntegrityError
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from app.email_utils import (
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get_email_domain_part,
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send_cannot_create_directory_alias,
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send_cannot_create_domain_alias,
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email_belongs_to_alias_domains,
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)
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from app.extensions import db
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from app.log import LOG
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from app.models import (
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Alias,
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CustomDomain,
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Directory,
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User,
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DeletedAlias,
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)
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def try_auto_create(address: str) -> Optional[Alias]:
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"""Try to auto-create the alias using directory or catch-all domain
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"""
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alias = try_auto_create_catch_all_domain(address)
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if not alias:
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alias = try_auto_create_directory(address)
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return alias
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def try_auto_create_directory(address: str) -> Optional[Alias]:
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"""
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Try to create an alias with directory
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"""
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# check if alias belongs to a directory, ie having directory/anything@EMAIL_DOMAIN format
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if email_belongs_to_alias_domains(address):
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# if there's no directory separator in the alias, no way to auto-create it
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if "/" not in address and "+" not in address and "#" not in address:
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return None
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# alias contains one of the 3 special directory separator: "/", "+" or "#"
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if "/" in address:
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sep = "/"
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elif "+" in address:
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sep = "+"
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else:
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sep = "#"
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directory_name = address[: address.find(sep)]
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LOG.d("directory_name %s", directory_name)
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directory = Directory.get_by(name=directory_name)
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if not directory:
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return None
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dir_user: User = directory.user
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if not dir_user.can_create_new_alias():
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send_cannot_create_directory_alias(dir_user, address, directory_name)
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return None
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# if alias has been deleted before, do not auto-create it
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if DeletedAlias.get_by(email=address):
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LOG.warning(
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"Alias %s was deleted before, cannot auto-create using directory %s, user %s",
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address,
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directory_name,
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dir_user,
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)
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return None
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LOG.d("create alias %s for directory %s", address, directory)
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alias = Alias.create(
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email=address,
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user_id=directory.user_id,
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directory_id=directory.id,
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mailbox_id=dir_user.default_mailbox_id,
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)
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db.session.commit()
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return alias
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def try_auto_create_catch_all_domain(address: str) -> Optional[Alias]:
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"""Try to create an alias with catch-all domain"""
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# try to create alias on-the-fly with custom-domain catch-all feature
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# check if alias is custom-domain alias and if the custom-domain has catch-all enabled
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alias_domain = get_email_domain_part(address)
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custom_domain = CustomDomain.get_by(domain=alias_domain)
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if not custom_domain:
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return None
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# custom_domain exists
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if not custom_domain.catch_all:
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return None
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# custom_domain has catch-all enabled
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domain_user: User = custom_domain.user
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if not domain_user.can_create_new_alias():
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send_cannot_create_domain_alias(domain_user, address, alias_domain)
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return None
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# if alias has been deleted before, do not auto-create it
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if DeletedAlias.get_by(email=address):
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LOG.warning(
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"Alias %s was deleted before, cannot auto-create using domain catch-all %s, user %s",
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address,
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custom_domain,
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domain_user,
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)
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return None
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LOG.d("create alias %s for domain %s", address, custom_domain)
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alias = Alias.create(
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email=address,
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user_id=custom_domain.user_id,
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custom_domain_id=custom_domain.id,
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automatic_creation=True,
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mailbox_id=domain_user.default_mailbox_id,
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)
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db.session.commit()
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return alias
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def delete_alias(alias: Alias, user: User):
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email = alias.email
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Alias.delete(alias.id)
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db.session.commit()
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# try to save deleted alias
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try:
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DeletedAlias.create(email=email)
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db.session.commit()
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# this can happen when a previously deleted alias is re-created via catch-all or directory feature
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except IntegrityError:
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LOG.error("alias %s has been added before to DeletedAlias", email)
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db.session.rollback()
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