<commit_before>"""SMTP email backend class."""

import smtplib
import socket
import threading

from django.conf import settings
from django.core.mail.backends.base import BaseEmailBackend
from django.core.mail.utils import DNS_NAME

class EmailBackend(BaseEmailBackend):
    """
    A wrapper that manages the SMTP network connection.
    """
    def __init__(self, host=None, port=None, username=None, password=<PASSWORD>,
                 use_tls=None, fail_silently=False, **kwargs):
        super(EmailBackend, self).__init__(fail_silently=fail_silently)
        self.host = host or settings.EMAIL_HOST
        self.port = port or settings.EMAIL_PORT
        self.username = username or settings.EMAIL_HOST_USER
        self.password = password or settings.EMAIL_HOST_PASSWORD
        self.use_tls = (use_tls is not None) and use_tls or settings.EMAIL_USE_TLS
        self.connection = None
        self._lock = threading.RLock()

    def open(self):
        """
        Ensures we have a connection to the email server. Returns whether or
        not a new connection was required (True or False).
        """
        if self.connection:
            # Nothing to do if the connection is already open.
            return False
        try:
            # If local_hostname is not specified, socket.getfqdn() gets used.
            # For performance, we use the cached FQDN for local_hostname.
            self.connection = smtplib.SMTP(self.host, self.port,
                                           local_hostname=DNS_NAME.get_fqdn())
            if self.use_tls:
                self.connection.ehlo()
                self.connection.starttls()
                self.connection.ehlo()
            if self.username and self.password:
                self.connection.login(self.username, self.password)
            return True
        except:
            if not self.fail_silently:
                raise

    def close(self):<commit_msg>Fixed #11849 -- Corrected handling of use_tls in the SMTP mail handler. Thanks to aromano for the report.<commit_after>"""SMTP email backend class."""

import smtplib
import socket
import threading

from django.conf import settings
from django.core.mail.backends.base import BaseEmailBackend
from django.core.mail.utils import DNS_NAME

class EmailBackend(BaseEmailBackend):
    """
    A wrapper that manages the SMTP network connection.
    """
    def __init__(self, host=None, port=None, username=None, password=None,
                 use_tls=None, fail_silently=False, **kwargs):
        super(EmailBackend, self).__init__(fail_silently=fail_silently)
        self.host = host or settings.EMAIL_HOST
        self.port = port or settings.EMAIL_PORT
        self.username = username or settings.EMAIL_HOST_USER
        self.password = password or settings.EMAIL_HOST_PASSWORD
        if use_tls is None:
            self.use_tls = settings.EMAIL_USE_TLS
        else:
            self.use_tls = use_tls
        self.connection = None
        self._lock = threading.RLock()

    def open(self):
        """
        Ensures we have a connection to the email server. Returns whether or
        not a new connection was required (True or False).
        """
        if self.connection:
            # Nothing to do if the connection is already open.
            return False
        try:
            # If local_hostname is not specified, socket.getfqdn() gets used.
            # For performance, we use the cached FQDN for local_hostname.
            self.connection = smtplib.SMTP(self.host, self.port,
                                           local_hostname=DNS_NAME.get_fqdn())
            if self.use_tls:
                self.connection.ehlo()
                self.connection.starttls()
                self.connection.ehlo()
            if self.username and self.password:
                self.connection.login(self.username, self.password)
            return True
        except:
            if not self.fail_silently:
                raise

    def close(self):
{'fraction_non_alphanumeric': 0.07556109725685786, 'fraction_numerical': 0.0012468827930174563, 'mean_word_length': 2.1384976525821595, 'pattern_counts': {'":': 0, '<': 4, '<?xml version=': 0, '>': 4, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 4, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4102176', 'n_tokens_mistral': 1071, 'n_tokens_neox': 1066, 'n_words': 315}