290 lines
9.9 KiB
Python
290 lines
9.9 KiB
Python
# Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
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# MIT License. See license.txt
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from __future__ import unicode_literals
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import frappe
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import HTMLParser
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import smtplib
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from frappe import msgprint, throw, _
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from frappe.email.smtp import SMTPServer, get_outgoing_email_account
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from frappe.email.email_body import get_email, get_formatted_html
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from frappe.utils.verified_command import get_signed_params, verify_request
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from html2text import html2text
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from frappe.utils import get_url, nowdate, encode, now_datetime, add_days, split_emails
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class BulkLimitCrossedError(frappe.ValidationError): pass
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def send(recipients=None, sender=None, subject=None, message=None, reference_doctype=None,
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reference_name=None, unsubscribe_method=None, unsubscribe_params=None, unsubscribe_message=None,
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attachments=None, reply_to=None, cc=(), show_as_cc=(), message_id=None, send_after=None,
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expose_recipients=False, bulk_priority=1):
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"""Add email to sending queue (Bulk Email)
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:param recipients: List of recipients.
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:param sender: Email sender.
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:param subject: Email subject.
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:param message: Email message.
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:param reference_doctype: Reference DocType of caller document.
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:param reference_name: Reference name of caller document.
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:param bulk_priority: Priority for bulk email, default 1.
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:param unsubscribe_method: URL method for unsubscribe. Default is `/api/method/frappe.email.bulk.unsubscribe`.
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:param unsubscribe_params: additional params for unsubscribed links. default are name, doctype, email
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:param attachments: Attachments to be sent.
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:param reply_to: Reply to be captured here (default inbox)
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:param message_id: Used for threading. If a reply is received to this email, Message-Id is sent back as In-Reply-To in received email.
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:param send_after: Send this email after the given datetime. If value is in integer, then `send_after` will be the automatically set to no of days from current date.
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"""
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if not unsubscribe_method:
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unsubscribe_method = "/api/method/frappe.email.bulk.unsubscribe"
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if not recipients:
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return
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if isinstance(recipients, basestring):
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recipients = split_emails(recipients)
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if isinstance(send_after, int):
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send_after = add_days(nowdate(), send_after)
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if not sender or sender == "Administrator":
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email_account = get_outgoing_email_account()
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sender = email_account.default_sender
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check_bulk_limit(recipients)
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formatted = get_formatted_html(subject, message)
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try:
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text_content = html2text(formatted)
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except HTMLParser.HTMLParseError:
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text_content = "See html attachment"
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if reference_doctype and reference_name:
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unsubscribed = [d.email for d in frappe.db.get_all("Email Unsubscribe", "email",
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{"reference_doctype": reference_doctype, "reference_name": reference_name})]
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unsubscribed += [d.email for d in frappe.db.get_all("Email Unsubscribe", "email",
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{"global_unsubscribe": 1})]
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else:
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unsubscribed = []
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recipients = [r for r in list(set(recipients)) if r and r not in unsubscribed]
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for email in recipients:
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email_content = formatted
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email_text_context = text_content
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if reference_doctype:
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unsubscribe_link = get_unsubscribe_link(
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reference_doctype=reference_doctype,
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reference_name=reference_name,
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email=email,
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recipients=recipients,
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expose_recipients=expose_recipients,
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unsubscribe_method=unsubscribe_method,
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unsubscribe_params=unsubscribe_params,
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unsubscribe_message=unsubscribe_message,
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show_as_cc=show_as_cc
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)
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email_content = email_content.replace("<!--unsubscribe link here-->", unsubscribe_link.html)
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email_text_context += unsubscribe_link.text
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# show as cc
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cc_message = ""
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if email in show_as_cc:
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cc_message = _("This email was sent to you as CC")
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email_content = email_content.replace("<!-- cc message -->", cc_message)
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email_text_context = cc_message + "\n" + email_text_context
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# add to queue
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add(email, sender, subject, email_content, email_text_context, reference_doctype,
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reference_name, attachments, reply_to, cc, message_id, send_after, bulk_priority)
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def add(email, sender, subject, formatted, text_content=None,
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reference_doctype=None, reference_name=None, attachments=None, reply_to=None,
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cc=(), message_id=None, send_after=None, bulk_priority=1):
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"""add to bulk mail queue"""
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e = frappe.new_doc('Bulk Email')
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e.sender = sender
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e.recipient = email
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e.priority = bulk_priority
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try:
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mail = get_email(email, sender=e.sender, formatted=formatted, subject=subject,
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text_content=text_content, attachments=attachments, reply_to=reply_to, cc=cc)
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if message_id:
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mail.set_message_id(message_id)
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e.message = mail.as_string()
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except frappe.InvalidEmailAddressError:
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# bad email id - don't add to queue
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return
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e.reference_doctype = reference_doctype
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e.reference_name = reference_name
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e.send_after = send_after
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e.insert(ignore_permissions=True)
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def check_bulk_limit(recipients):
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# get count of mails sent this month
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this_month = frappe.db.sql("""select count(*) from `tabBulk Email` where
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status='Sent' and MONTH(creation)=MONTH(CURDATE())""")[0][0]
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# if using settings from site_config.json, check bulk limit
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# No limit for own email settings
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smtp_server = SMTPServer()
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if (smtp_server.email_account
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and getattr(smtp_server.email_account, "from_site_config", False)
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or frappe.flags.in_test):
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monthly_bulk_mail_limit = frappe.conf.get('monthly_bulk_mail_limit') or 500
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if (this_month + len(recipients)) > monthly_bulk_mail_limit:
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throw(_("Cannot send this email. You have crossed the sending limit of {0} emails for this month.").format(monthly_bulk_mail_limit),
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BulkLimitCrossedError)
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def get_unsubscribe_link(reference_doctype, reference_name,
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email, recipients, expose_recipients, show_as_cc,
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unsubscribe_method, unsubscribe_params, unsubscribe_message):
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email_sent_to = recipients if expose_recipients else [email]
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email_sent_cc = ", ".join([e for e in email_sent_to if e in show_as_cc])
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email_sent_to = ", ".join([e for e in email_sent_to if e not in show_as_cc])
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if email_sent_cc:
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email_sent_message = _("This email was sent to {0} and copied to {1}").format(email_sent_to, email_sent_cc)
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else:
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email_sent_message = _("This email was sent to {0}").format(email_sent_to)
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if not unsubscribe_message:
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unsubscribe_message = _("Unsubscribe from this list")
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unsubscribe_url = get_unsubcribed_url(reference_doctype, reference_name, email,
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unsubscribe_method, unsubscribe_params)
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html = """<div style="margin: 15px auto; padding: 0px 7px; text-align: center; color: #8d99a6;">
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{email}
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<p style="margin: 15px auto;">
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<a href="{unsubscribe_url}" style="color: #8d99a6; text-decoration: underline;
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target="_blank">{unsubscribe_message}
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</a>
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</p>
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</div>""".format(
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unsubscribe_url = unsubscribe_url,
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email=email_sent_message,
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unsubscribe_message=unsubscribe_message
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)
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text = "\n{email}\n\n{unsubscribe_message}: {unsubscribe_url}".format(
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email=email_sent_message,
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unsubscribe_message=unsubscribe_message,
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unsubscribe_url=unsubscribe_url
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)
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return frappe._dict({
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"html": html,
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"text": text
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})
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def get_unsubcribed_url(reference_doctype, reference_name, email, unsubscribe_method, unsubscribe_params):
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params = {"email": email.encode("utf-8"),
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"doctype": reference_doctype.encode("utf-8"),
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"name": reference_name.encode("utf-8")}
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if unsubscribe_params:
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params.update(unsubscribe_params)
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query_string = get_signed_params(params)
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# for test
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frappe.local.flags.signed_query_string = query_string
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return get_url(unsubscribe_method + "?" + get_signed_params(params))
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@frappe.whitelist(allow_guest=True)
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def unsubscribe(doctype, name, email):
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# unsubsribe from comments and communications
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if not verify_request():
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return
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try:
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frappe.get_doc({
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"doctype": "Email Unsubscribe",
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"email": email,
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"reference_doctype": doctype,
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"reference_name": name
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}).insert(ignore_permissions=True)
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except frappe.DuplicateEntryError:
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frappe.db.rollback()
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else:
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frappe.db.commit()
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return_unsubscribed_page(email, doctype, name)
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def return_unsubscribed_page(email, doctype, name):
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frappe.respond_as_web_page(_("Unsubscribed"), _("{0} has left the conversation in {1} {2}").format(email, _(doctype), name))
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def flush(from_test=False):
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"""flush email queue, every time: called from scheduler"""
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smtpserver = SMTPServer()
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auto_commit = not from_test
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# additional check
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check_bulk_limit([])
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if frappe.are_emails_muted():
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msgprint(_("Emails are muted"))
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from_test = True
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frappe.db.sql("""update `tabBulk Email` set status='Expired'
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where datediff(curdate(), creation) > 3""", auto_commit=auto_commit)
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for i in xrange(500):
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email = frappe.db.sql("""select * from `tabBulk Email` where
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status='Not Sent' and ifnull(send_after, "2000-01-01 00:00:00") < %s
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order by priority desc, creation asc limit 1 for update""", now_datetime(), as_dict=1)
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if email:
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email = email[0]
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else:
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break
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frappe.db.sql("""update `tabBulk Email` set status='Sending' where name=%s""",
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(email["name"],), auto_commit=auto_commit)
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try:
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if not from_test:
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smtpserver.setup_email_account(email.reference_doctype)
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smtpserver.sess.sendmail(email["sender"], email["recipient"], encode(email["message"]))
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frappe.db.sql("""update `tabBulk Email` set status='Sent' where name=%s""",
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(email["name"],), auto_commit=auto_commit)
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except (smtplib.SMTPServerDisconnected,
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smtplib.SMTPConnectError,
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smtplib.SMTPHeloError,
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smtplib.SMTPAuthenticationError):
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# bad connection, retry later
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frappe.db.sql("""update `tabBulk Email` set status='Not Sent' where name=%s""",
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(email["name"],), auto_commit=auto_commit)
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# no need to attempt further
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return
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except Exception, e:
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frappe.db.sql("""update `tabBulk Email` set status='Error', error=%s
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where name=%s""", (unicode(e), email["name"]), auto_commit=auto_commit)
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finally:
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frappe.db.commit()
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def clear_outbox():
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"""Remove mails older than 31 days in Outbox. Called daily via scheduler."""
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frappe.db.sql("""delete from `tabBulk Email` where
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datediff(now(), creation) > 31""")
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