From 688496d857dc66508166364e30e6ed5f260602d3 Mon Sep 17 00:00:00 2001
From: salvadorpla <salvador.pla@gmail.com>
Date: Sat, 30 Nov 2019 14:07:16 +0100
Subject: [PATCH] first commit

---
 README.md   |   1 +
 db-setup.py | 152 ++++++++++++++++++++
 mailing.py  | 390 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 setup.py    |  61 ++++++++
 4 files changed, 604 insertions(+)
 create mode 100644 README.md
 create mode 100644 db-setup.py
 create mode 100644 mailing.py
 create mode 100644 setup.py

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..adadce3
--- /dev/null
+++ b/README.md
@@ -0,0 +1 @@
+# mailing
diff --git a/db-setup.py b/db-setup.py
new file mode 100644
index 0000000..639aaa8
--- /dev/null
+++ b/db-setup.py
@@ -0,0 +1,152 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import pdb
+import getpass
+import os
+import sys
+import psycopg2
+from psycopg2 import sql
+from psycopg2.extensions import ISOLATION_LEVEL_AUTOCOMMIT
+
+# Returns the parameter from the specified file
+def get_parameter( parameter, file_path ):
+    # Check if secrets file exists
+    if not os.path.isfile(file_path):
+        print("File %s not found, asking."%file_path)
+        write_parameter( parameter, file_path )
+        #sys.exit(0)
+
+    # Find parameter in file
+    with open( file_path ) as f:
+        for line in f:
+            if line.startswith( parameter ):
+                return line.replace(parameter + ":", "").strip()
+
+    # Cannot find parameter, exit
+    print(file_path + "  Missing parameter %s "%parameter)
+    sys.exit(0)
+
+def write_parameter( parameter, file_path ):
+  print("Setting up mailing DB parameters...")
+  print("\n")
+  mastodon_db = input("Mastodon db name: ")
+  mastodon_db_user = input("Mastodon db user: ")
+  mailing_db = input("Mailing db name: ")
+  mailing_db_user = input("Mailing db user: ")
+  mailing_db_table = input("Mailing db table: ")
+  with open(file_path, "w") as text_file:
+    print("mastodon_db: {}".format(mastodon_db), file=text_file)
+    print("mastodon_db_user: {}".format(mastodon_db_user), file=text_file)
+    print("mailing_db: {}".format(mailing_db), file=text_file)
+    print("mailing_db_user: {}".format(mailing_db_user), file=text_file)
+    print("mailing_db_table: {}".format(mailing_db_table), file=text_file)
+
+def create_table(db, db_user, table, sql):
+
+  try:
+
+    conn = None
+    conn = psycopg2.connect(database = db, user = db_user, password = "", host = "/var/run/postgresql", port = "5432")
+    cur = conn.cursor()
+
+
+    print("Creating table.. "+table)
+    # Create the table in PostgreSQL database
+    cur.execute(sql)
+
+    conn.commit()
+    print("Table "+table+" created!")
+    print("\n")
+
+  except (Exception, psycopg2.DatabaseError) as error:
+
+    print(error)
+
+  finally:
+
+    if conn is not None:
+
+      conn.close()
+
+#############################################################################################
+  
+# Load configuration from config file
+config_filepath = "config.txt"
+mastodon_db = get_parameter("mastodon_db", config_filepath) # E.g., mastodon_production
+mastodon_db_user = get_parameter("mastodon_db_user", config_filepath) # E.g., mastodon
+mailing_db = get_parameter("mailing_db", config_filepath) # E.g., inactive
+mailing_db_user = get_parameter("mailing_db_user", config_filepath) # E.g., mastodon
+mailing_db_table = get_parameter("mailing_db_table", config_filepath) # E.g., inactive_users 
+
+############################################################
+# create database
+############################################################
+
+try:
+
+  conn = psycopg2.connect(dbname='postgres',
+      user=mailing_db_user, host='',
+      password='')
+
+  conn.set_isolation_level(ISOLATION_LEVEL_AUTOCOMMIT)
+
+  cur = conn.cursor()
+
+  print("Creating database " + mailing_db + ". Please wait...")
+  cur.execute(sql.SQL("CREATE DATABASE {}").format(
+          sql.Identifier(mailing_db))
+      )
+  print("Database " + mailing_db + " created!")
+
+except (Exception, psycopg2.DatabaseError) as error:
+
+  print(error)
+
+finally:
+
+  if conn is not None:
+
+    conn.close()
+
+#############################################################################################
+
+try:
+
+  conn = None
+  conn = psycopg2.connect(database = mailing_db, user = mailing_db_user, password = "", host = "/var/run/postgresql", port = "5432")
+
+except (Exception, psycopg2.DatabaseError) as error:
+
+  print(error)
+  # Load configuration from config file
+  os.remove("config.txt")
+  print("Exiting. Run setup again with right parameters")
+  sys.exit(0)
+
+if conn is not None:
+
+  print("\n")
+  print("Mailing db parameters saved to config.txt!")
+  print("\n")
+
+############################################################
+# Create needed tables 
+############################################################
+
+print("Creating table...")
+
+########################################
+
+db = mailing_db
+db_user = mailing_db_user
+table = mailing_db_table
+sql = "create table "+table+" (datetime timestamptz, account_id int primary key, username varchar(30), email varchar(50), emailed_at timestamptz, emailed boolean default False, deleted boolean default False, elapse_days varchar(30))"
+
+create_table(db, db_user, table, sql)
+
+#####################################
+
+print("Done!")
+print("Now you can run setup.py!")
+print("\n")
diff --git a/mailing.py b/mailing.py
new file mode 100644
index 0000000..29133fc
--- /dev/null
+++ b/mailing.py
@@ -0,0 +1,390 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from datetime import datetime, timezone
+import time
+import threading
+import os
+import sys
+import os.path
+from email.mime.multipart import MIMEMultipart
+from email.mime.text import MIMEText
+import smtplib
+from smtplib import SMTPException, SMTPAuthenticationError, SMTPConnectError, SMTPRecipientsRefused
+import psycopg2
+import socket 
+from socket import gaierror
+
+###################################################################################
+# write to database mailing status of inactive users
+###################################################################################
+
+def write_db(now, id, username, email, emailed_at, emailed):
+
+  insert_line = "INSERT INTO " + mailing_db_table + "(datetime, account_id, username, email, emailed_at, emailed) VALUES(%s,%s,%s,%s,%s,%s) ON CONFLICT DO NOTHING"
+
+  conn = None
+
+  try:
+
+    conn = psycopg2.connect(database = mailing_db, user = mailing_db_user, password = "", host = "/var/run/postgresql", port = "5432")
+
+    cur = conn.cursor()
+
+    cur.execute("SELECT account_id FROM " + mailing_db_table + " where account_id=(%s)", (id,))
+
+    row = cur.fetchone()
+
+    if row == None:
+
+      cur.execute(insert_line, (now, id, username, email, now, emailed))
+
+    else:
+
+      if emailed == True:
+
+        cur.execute("SELECT datetime FROM " + mailing_db_table + " where account_id=(%s)", (id,))
+
+        row = cur.fetchone()
+        delta = now-row[0]
+
+        cur.execute("UPDATE " + mailing_db_table + " SET elapsed_days=(%s), email=(%s), emailed=(%s) where account_id=(%s)", (delta, email, emailed, id))
+     
+    conn.commit()
+
+    cur.close()
+
+  except (Exception, psycopg2.DatabaseError) as error:
+
+    print(error)
+
+  finally:
+
+    if conn is not None:
+
+      conn.close()
+
+###############################################################################
+# check if inactive user had been already emailed
+###############################################################################
+
+def email_sent(id):
+
+  try:
+
+    conn = psycopg2.connect(database = mailing_db, user = mailing_db_user, password = "", host = "/var/run/postgresql", port = "5432")
+
+    cur = conn.cursor()
+
+    cur.execute("SELECT emailed FROM " + mailing_db_table + " where account_id=(%s)", (id,))
+
+    row = cur.fetchone()
+
+    if row == None:
+
+      been_emailed = False
+
+    else:
+ 
+      been_emailed = row[0]
+
+    cur.close()
+
+    return been_emailed
+
+  except (Exception, psycopg2.DatabaseError) as error:
+
+    print(error)
+
+  finally:
+
+    if conn is not None:
+
+      conn.close() 
+
+###############################################################################
+# Connect to Mastodon's Postgres DB to check if any inactive user is back online 
+###############################################################################
+
+def check_alive(id):
+
+  try:
+
+    conn = psycopg2.connect(database = mastodon_db, user = mastodon_db_user, password = "", host = "/var/run/postgresql", port = "5432")
+
+    cur = conn.cursor()
+
+    cur.execute("select last_sign_in_at from users where account_id=(%s)", (id,))
+
+    row = cur.fetchone()
+    seen = row[0]
+
+    cur.close()
+
+    return seen
+
+  except (Exception, psycopg2.DatabaseError) as error:
+
+    print(error)
+
+###############################################################################
+# INITIALISATION
+###############################################################################
+
+# Returns the parameter from the specified file
+def get_parameter( parameter, file_path ):
+    # Check if secrets file exists
+    if not os.path.isfile(file_path):
+        if file_path == "secrets/secrets.txt":
+          print("File %s not found, exiting. Run setup.py."%file_path)
+        elif file_path == "config.txt":
+          print("File %s not found, exiting. Run db-setup.py."%file_path)
+        sys.exit(0)
+
+    # Find parameter in file
+    with open( file_path ) as f:
+        for line in f:
+            if line.startswith( parameter ):
+                return line.replace(parameter + ":", "").strip()
+
+    # Cannot find parameter, exit
+    print(file_path + "  Missing parameter %s "%parameter)
+    print("Run setup.py")
+    sys.exit(0)
+
+# Load secrets from secrets file
+secrets_filepath = "secrets/secrets.txt"
+smtp_host = get_parameter("smtp_host", secrets_filepath)
+smtp_user_login = get_parameter("smtp_user_login", secrets_filepath)
+smtp_user_password = get_parameter("smtp_user_password", secrets_filepath)
+email_subject = get_parameter("email_subject", secrets_filepath)
+
+# Load configuration from config file
+config_filepath = "config.txt"
+mastodon_db = get_parameter("mastodon_db", config_filepath)
+mastodon_db_user = get_parameter("mastodon_db_user", config_filepath)
+mailing_db = get_parameter("mailing_db", config_filepath)
+mailing_db_user = get_parameter("mailing_db_user", config_filepath)
+mailing_db_table = get_parameter("mailing_db_table", config_filepath)
+
+###############################################################################
+# check if inactive user is back online
+###############################################################################
+
+try:
+
+  conn = psycopg2.connect(database = mailing_db, user = mailing_db_user, password = "", host = "/var/run/postgresql", port = "5432")
+
+  cur = conn.cursor()
+
+  cur.execute("SELECT account_id FROM " + mailing_db_table)
+
+  rows = cur.fetchall()
+  if rows != []:
+
+    inactive_users_id = []
+
+    for row in rows:
+
+      inactive_users_id.append(row[0])
+
+  else:
+   
+    inactive_users_id = []
+
+  cur.close()
+
+except (Exception, psycopg2.DatabaseError) as error:
+
+  print(error)
+
+finally:
+
+  if conn is not None:
+
+    conn.close()
+
+i = 0
+while i < len(inactive_users_id):
+ 
+  seen = check_alive(inactive_users_id[i])
+
+  try:
+
+    conn = psycopg2.connect(database = mailing_db, user = mailing_db_user, password = "", host = "/var/run/postgresql", port = "5432")
+
+    cur = conn.cursor()
+
+    cur.execute("SELECT emailed_at FROM " + mailing_db_table + " where account_id=(%s)", (inactive_users_id[i],))
+
+    row = cur.fetchone()
+    email_datetime = row[0]
+    email_datetime = email_datetime.replace(tzinfo=None)
+
+    if email_datetime < seen:
+     
+      cur.execute("DELETE FROM " + mailing_db_table + " where account_id=(%s)", (inactive_users_id[i],))
+
+      conn.commit()
+
+    cur.close()
+
+    i += 1
+
+  except (Exception, psycopg2.DatabaseError) as error:
+
+    print(error)
+
+  finally:
+
+    if conn is not None:
+
+      conn.close()
+  
+###############################################################################
+
+now = datetime.now(timezone.utc)
+
+###############################################################################
+# Connect to Mastodon's Postgres DB to get last year inactive users 
+###############################################################################
+
+try:
+
+  conn = psycopg2.connect(database = mastodon_db, user = mastodon_db_user, password = "", host = "/var/run/postgresql", port = "5432")
+
+  cur = conn.cursor()
+
+  cur.execute("select account_id, email from users where last_sign_in_at < now() - interval '365 days' and disabled=False and approved=True order by last_sign_in_at desc;")
+  rows = cur.fetchall()
+
+  inactive_account_id = []
+  inactive_email = []
+
+  for row in rows:
+    inactive_account_id.append(row[0])
+    inactive_email.append(row[1])
+
+  cur.close()
+
+except (Exception, psycopg2.DatabaseError) as error:
+
+  print(error)
+
+########################################################################################################
+# get related usernames                                                                                #
+########################################################################################################
+
+inactive_usernames = []
+
+i = 0
+while i < len(inactive_account_id):
+
+  try:
+
+    conn = psycopg2.connect(database = mastodon_db, user = mastodon_db_user, password = "", host = "/var/run/postgresql", port = "5432")
+
+    cur = conn.cursor()
+
+    inactive_id = inactive_account_id[i]
+    cur.execute("select username from accounts where id = '%s';", [inactive_id])
+
+    row = cur.fetchone()
+    new_username = row[0]
+    inactive_usernames.append(new_username)
+
+    i += 1
+
+    cur.close()
+
+  except (Exception, psycopg2.DatabaseError) as error:
+
+    print(error)
+
+  finally:
+
+    if conn is not None:
+
+      conn.close()
+
+###########################################################################################################
+# email inactive users
+###########################################################################################################
+
+try:
+
+  fp = open('message.txt')
+  text = fp.read()
+  message = MIMEText(text)
+  print(type(message))
+  print(message)
+
+except:
+
+  print("message.txt file not found! Create it and write in the message you want for your inactive users.")
+
+finally:
+
+  fp.close()
+
+i = 0
+while i < len(inactive_email):
+
+  been_emailed = email_sent(inactive_account_id[i])
+
+  if been_emailed == False:
+
+    # Create message object instance
+    msg = MIMEMultipart()
+
+    # Declare message elements
+    msg['From'] = 'notificacions@mastodont.cat'
+    msg['To'] = inactive_email[i]
+    msg['Subject'] = inactive_usernames[i] + " " + email_subject
+
+    # Add the message body to the object instance
+    msg.attach(message)
+
+    try:
+
+      # Create the server connection 
+      server = smtplib.SMTP(smtp_host)
+      # Switch the connection over to TLS encryption
+      server.starttls() 
+      # Authenticate with the server
+      server.login(smtp_user_login, smtp_user_password)
+      # Send the message
+      server.sendmail(msg['From'], msg['To'], msg.as_string())
+      # Disconnect 
+      server.quit()
+
+      print("Successfully sent email message to %s" % msg['To'])
+      emailed = True
+      write_db(now, inactive_account_id[i], inactive_usernames[i], inactive_email[i], now, emailed) 
+
+      i += 1
+      time.sleep(5)
+   
+    except SMTPAuthenticationError as auth_error:
+ 
+      print(auth_error)
+      sys.exit(":-(")
+
+    except socket.gaierror as socket_error:
+
+      print(socket_error)
+      print("Unknown SMTP server") 
+      sys.exit(":-(")
+
+    except SMTPRecipientsRefused as recip_error:
+
+      print(recip_error)
+      emailed = False
+      write_db(now, inactive_account_id[i], inactive_usernames[i], inactive_email[i], now, emailed)
+      i += 1
+
+  else:
+
+    emailed = True
+    write_db(now, inactive_account_id[i], inactive_usernames[i], inactive_email[i], now, emailed)
+    i += 1
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..1a99267
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import pdb
+import getpass
+import fileinput,re  
+import os
+import sys
+
+def create_dir():
+  if not os.path.exists('secrets'):
+    os.makedirs('secrets')
+
+def create_file():
+  if not os.path.exists('secrets/secrets.txt'):
+    with open('secrets/secrets.txt', 'w'): pass
+    print(secrets_filepath + " created!") 
+
+def write_parameter( parameter, file_path ):
+  print("\n")
+  print("Setting up SMTP parameters...")
+  smtp_host = input("Enter SMTP hostname: ")
+  smtp_user_login = input("Enter SMTP user login, ex. user@" + smtp_host +"? ")
+  smtp_user_password = getpass.getpass("SMTP user password? ")
+  email_subject = input("Enter the subject of the email: ")
+  with open(file_path, "w") as text_file:
+    print("smtp_host: {}".format(smtp_host), file=text_file)
+    print("smtp_user_login: {}".format(smtp_user_login), file=text_file)
+    print("smtp_user_password: {}".format(smtp_user_password), file=text_file)
+    print("email_subject: {}".format(email_subject), file=text_file)
+
+# Returns the parameter from the specified file
+def get_parameter( parameter, file_path ):
+    # Check if secrets file exists
+    if not os.path.isfile(file_path):
+        print("File %s not found, creating it."%file_path)
+        create_dir()
+        create_file()
+        write_parameter( parameter, file_path )
+        print("\n")
+        print("SMTP setup done!\n")
+        print("Now you can run mailing.py!")
+
+    # Find parameter in file
+    with open( file_path ) as f:
+        for line in f:
+            if line.startswith( parameter ):
+                return line.replace(parameter + ":", "").strip()
+
+    # Cannot find parameter, exit
+    print(file_path + " Missing parameter %s "%parameter)
+    sys.exit(0)
+
+# Load secrets from secrets file
+secrets_filepath = "secrets/secrets.txt"
+smtp_host = get_parameter("smtp_host", secrets_filepath)
+smtp_user_login = get_parameter("smtp_user_login", secrets_filepath)
+smtp_user_pass = get_parameter("smtp_user_pass", secrets_filepath)
+email_subject = get_parameter("email_subject", secrets_filepath)
+
+