Initial commit; open-sourced

1 year ago · 038206ccda
9 changed files with 1196 additions and 0 deletions
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 massmail
 mail_list.txt
 conf.json
 massmail_release/
 massmail_release.zip
 message.txt
 message.html
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                    GNU AFFERO GENERAL PUBLIC LICENSE
                       Version 3, 19 November 2007
 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
                            Preamble
  The GNU Affero General Public License is a free, copyleft license for
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--- a/63
+++ b/63
@ -0,0 +1,63 @@
 all:
 	cd src/ && go build && mv massmail ..
 clean:
 	rm -rf massmail massmail_release
 release:
 	mkdir -p massmail_release
 	mkdir -p massmail_release/win_x32 && \
 	 cp README.md massmail_release/win_x32 && \
 	 cp message.html massmail_release/win_x32 && \
 	 cp mail_list.txt massmail_release/win_x32 && \
 	 cd src && \
 	 CGO_ENABLED=0 GOARCH=386 GOOS=windows go build && \
 	 mv massmail.exe ../massmail_release/win_x32 && \
 	 cd ../massmail_release && \
 	 zip -r win_x32.zip win_x32 && \
 	 rm -rf win_x32
 	mkdir -p massmail_release/win_x64 && \
 	 cp README.md massmail_release/win_x64 && \
 	 cp message.html massmail_release/win_x64 && \
 	 cp mail_list.txt massmail_release/win_x64 && \
 	 cd src && \
 	 CGO_ENABLED=0 GOARCH=amd64 GOOS=windows go build && \
 	 mv massmail.exe ../massmail_release/win_x64 && \
 	 cd ../massmail_release && \
 	 zip -r win_x64.zip win_x64 && \
 	 rm -rf win_x64
 	mkdir -p massmail_release/linux_x64 && \
 	 cp README.md massmail_release/linux_x64 && \
 	 cp message.html massmail_release/linux_x64 && \
 	 cp mail_list.txt massmail_release/linux_x64 && \
 	 cd src && \
 	 CGO_ENABLED=0 GOARCH=amd64 GOOS=linux go build && \
 	 mv massmail ../massmail_release/linux_x64 && \
 	 cd ../massmail_release && \
 	 zip -r linux_x64.zip linux_x64 && \
 	 rm -rf linux_x64
 	mkdir -p massmail_release/darwin_x64 && \
 	 cp README.md massmail_release/darwin_x64 && \
 	 cp message.html massmail_release/darwin_x64 && \
 	 cp mail_list.txt massmail_release/darwin_x64 && \
 	 cd src && \
 	 CGO_ENABLED=0 GOARCH=amd64 GOOS=darwin go build && \
 	 mv massmail ../massmail_release/darwin_x64 && \
 	 cd ../massmail_release && \
 	 zip -r darwin_x64.zip darwin_x64 && \
 	 rm -rf darwin_x64
 	mkdir -p massmail_release/source && \
 	 cp -r src/* massmail_release/source \
 	 && cp Makefile massmail_release/source \
 	 && cp README.md massmail_release/source \
 	 && cp message.html massmail_release/source \
 	 && cp message.txt massmail_release/source \
 	 && cp mail_list.txt massmail_release/source
--- a/README.md
+++ b/README.md
@ -0,0 +1,42 @@
 # massmail
 ## Send a separate e-mail to a list of known addresses
 ## Usage
 The first run of the program will create a configuration file in the working directory. Fill in every field with the exception of optional file attachments. You'll need either a plaintext or html-encoded file which contains text to be sent as e-mail's body and a mail list file in which there's an e-mail address sitting on its own line.
 If all the information is correct - you're all set to launch the binary again. It'll apply information written to the configuration file, look for specified files and start sending e-mails.
 ## GMail step-by-step
 GMail address:password pair does not work out of the box; some toggles in the settings are required.
 1. Enter your GMail box
 2. Access settings
 3. Proceed to "Forwarding and POP/IMAP" tab
 4. Enable IMAP
 5. Open Google Account/Security
 6. Open 2-Step Verification tab
 7. Scroll down and select "App passwords"
 8. Generate a new app password
 9. Use it **instead** of the account password
 I have no responsibility for **your** actions
 -----
 ## Использование
 Первый запуск программы создаст конфигурационный файл в рабочей директории. Заполните каждое поле, с оговоркой в поле вложенных файлов, которое является необязательным. Дополнительно вам потребуется либо обычный текстовый, либо html файлик с текстом сообщения, которое будет отправлено; файл со списком адресов, по одному на каждой строчке.
 ## Шаги для использования с GMail
 Просто Адрес:пароль не пройдёт, нужно чутка потыкать в настройках.
 1. Зайдите в почтовый ящик
 2. Пройдите в настройки
 3. Выберите "Forwarding and POP/IMAP"
 4. Включите IMAP
 5. Затем откройте настройки самого аккаунта гугла, вкладка "Account/Security"
 6. Откройте меню двухфакторной аутентификации
 7. Пролистайте вниз и выберите "App passwords"
 8. Создайте новый пароль для приложения
 9. Используйте его **вместо** пароля аккаунта в конфигурационном файле 
 Я не отвечаю за **ваши** действия
--- a/src/config/config.go
+++ b/src/config/config.go
@ -0,0 +1,116 @@
 /*
 massmailer - send an e-mail to a list of addresses
 Copyright (C) 2023 Kasyanov Nikolay Alexeyevich (Unbewohnte)
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Affero General Public License as
 published by the Free Software Foundation, either version 3 of the
 License, or (at your option) any later version.
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Affero General Public License for more details.
 You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 package config
 import (
 	"encoding/json"
 	"io"
 	"os"
 )
 type Conf struct {
 	From                   string   `json:"from"`
 	Host                   string   `json:"host"`
 	HostSMTPPort           uint     `json:"host_SMTP_port"`
 	FromHostPassword       string   `json:"from_host_password"`
 	ToDBPath               string   `json:"to_db_path"`
 	MessageFilePath        string   `json:"message_file_path"`
 	MessageSubject         string   `json:"message_subject"`
 	MessageAttachmentPaths []string `json:"message_attachment_paths"`
 	MessageSendDelayMS     uint     `json:"message_send_delay_miliseconds"`
 }
 // Default configuration file structure
 func Default() *Conf {
 	return &Conf{
 		From:                   "me@example.com",
 		Host:                   "smtp.example.com",
 		HostSMTPPort:           587,
 		FromHostPassword:       "me@example.com_password",
 		ToDBPath:               "mail_list.txt",
 		MessageFilePath:        "message.html",
 		MessageSubject:         "Message subject",
 		MessageAttachmentPaths: []string{""},
 		MessageSendDelayMS:     50,
 	}
 }
 // Write current configuration to w
 func (c *Conf) WriteTo(w io.Writer) error {
 	jsonData, err := json.MarshalIndent(c, " ", "\t")
 	if err != nil {
 		return err
 	}
 	_, err = w.Write(jsonData)
 	if err != nil {
 		return err
 	}
 	return nil
 }
 // Read configuration from r
 func (c *Conf) ReadFrom(r io.Reader) error {
 	jsonData, err := io.ReadAll(r)
 	if err != nil {
 		return nil
 	}
 	err = json.Unmarshal(jsonData, c)
 	if err != nil {
 		return err
 	}
 	return nil
 }
 // Creates configuration file at path
 func CreateConfigFile(conf Conf, path string) error {
 	confFile, err := os.Create(path)
 	if err != nil {
 		return err
 	}
 	defer confFile.Close()
 	err = conf.WriteTo(confFile)
 	if err != nil {
 		return err
 	}
 	return nil
 }
 // Tries to open configuration file at path. If it fails - returns default configuration
 func OpenConfigFile(path string) (*Conf, error) {
 	confFile, err := os.Open(path)
 	if err != nil {
 		return Default(), err
 	}
 	defer confFile.Close()
 	var conf Conf
 	err = conf.ReadFrom(confFile)
 	if err != nil {
 		return Default(), err
 	}
 	return &conf, nil
 }
--- a/src/go.mod
+++ b/src/go.mod
@ -0,0 +1,8 @@
 module Unbewohnte/massmail
 go 1.18
 require (
 	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
 	gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df // indirect
 )
--- a/src/go.sum
+++ b/src/go.sum
@ -0,0 +1,4 @@
 gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc h1:2gGKlE2+asNV9m7xrywl36YYNnBG5ZQ0r/BOOxqPpmk=
 gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc/go.mod h1:m7x9LTH6d71AHyAX77c9yqWCCa3UKHcVEj9y7hAtKDk=
 gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df h1:n7WqCuqOuCbNr617RXOY0AWRXxgwEyPp2z+p0+hgMuE=
 gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df/go.mod h1:LRQQ+SO6ZHR7tOkpBDuZnXENFzX8qRjMDMyPD6BRkCw=
--- a/src/logger/logger.go
+++ b/src/logger/logger.go
@ -0,0 +1,71 @@
 /*
 massmailer - send an e-mail to a list of addresses
 Copyright (C) 2023 Kasyanov Nikolay Alexeyevich (Unbewohnte)
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Affero General Public License as
 published by the Free Software Foundation, either version 3 of the
 License, or (at your option) any later version.
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Affero General Public License for more details.
 You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 package logger
 import (
 	"io"
 	"log"
 	"os"
 )
 // 3 basic loggers in global space
 var (
 	// neutral information logger
 	infoLog *log.Logger
 	// warning-level information logger
 	warningLog *log.Logger
 	// error-level information logger
 	errorLog *log.Logger
 )
 func init() {
 	infoLog = log.New(os.Stdout, "[INFO] ", log.Ltime)
 	warningLog = log.New(os.Stdout, "[WARNING] ", log.Ltime)
 	errorLog = log.New(os.Stdout, "[ERROR] ", log.Ltime)
 }
 // Set up loggers to write to the given writer
 func SetOutput(writer io.Writer) {
 	if writer == nil {
 		writer = io.Discard
 	}
 	infoLog.SetOutput(writer)
 	warningLog.SetOutput(writer)
 	errorLog.SetOutput(writer)
 }
 // Get current logger's output writer
 func GetOutput() io.Writer {
 	return infoLog.Writer()
 }
 // Log information
 func Info(format string, a ...interface{}) {
 	infoLog.Printf(format, a...)
 }
 // Log warning
 func Warning(format string, a ...interface{}) {
 	warningLog.Printf(format, a...)
 }
 // Log error
 func Error(format string, a ...interface{}) {
 	errorLog.Printf(format, a...)
 }
--- a/src/main.go
+++ b/src/main.go
@ -0,0 +1,223 @@
 /*
 massmailer - send an e-mail to a list of addresses
 Copyright (C) 2023 Kasyanov Nikolay Alexeyevich (Unbewohnte)
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Affero General Public License as
 published by the Free Software Foundation, either version 3 of the
 License, or (at your option) any later version.
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Affero General Public License for more details.
 You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 package main
 import (
 	"Unbewohnte/massmail/config"
 	"Unbewohnte/massmail/logger"
 	"bufio"
 	"flag"
 	"fmt"
 	"io"
 	"mime"
 	"os"
 	"path/filepath"
 	"strings"
 	"sync"
 	"time"
 	"gopkg.in/gomail.v2"
 )
 const version = "v0.1.2"
 const (
 	configFilename string = "conf.json"
 )
 var (
 	printVersion = flag.Bool(
 		"version", false,
 		"Print version and exit",
 	)
 	wDir = flag.String(
 		"wdir", "",
 		"Force set working directory",
 	)
 	configFile = flag.String(
 		"conf", configFilename,
 		"Configuration file name to create|look for",
 	)
 	workingDirectory string
 	configFilePath   string
 )
 func init() {
 	// set log output
 	logger.SetOutput(os.Stdout)
 	// parse and process flags
 	flag.Parse()
 	if *printVersion {
 		fmt.Printf(
 			"massmailer %s\n(c) 2023 Kasyanov Nikolay Alexeyevich (Unbewohnte)\n",
 			version,
 		)
 		os.Exit(0)
 	}
 	// print logo
 	logger.GetOutput().Write([]byte(
 		`███╗   ███╗ █████╗ ███████╗███████╗███╗   ███╗ █████╗ ██╗██╗     
 ████╗ ████║██╔══██╗██╔════╝██╔════╝████╗ ████║██╔══██╗██║██║     
 ██╔████╔██║███████║███████╗███████╗██╔████╔██║███████║██║██║     
 ██║╚██╔╝██║██╔══██║╚════██║╚════██║██║╚██╔╝██║██╔══██║██║██║     
 ██║ ╚═╝ ██║██║  ██║███████║███████║██║ ╚═╝ ██║██║  ██║██║███████╗
 ╚═╝     ╚═╝╚═╝  ╚═╝╚══════╝╚══════╝╚═╝     ╚═╝╚═╝  ╚═╝╚═╝╚══════╝ `,
 	))
 	logger.GetOutput().Write([]byte(version + " by Unbewohnte\n\n"))
 	// work out working directory path
 	if *wDir != "" {
 		workingDirectory = *wDir
 	} else {
 		wdir, err := os.Getwd()
 		if err != nil {
 			logger.Error("Failed to determine working directory path: %s", err)
 			return
 		}
 		workingDirectory = wdir
 	}
 	logger.Info("Working in \"%s\"", workingDirectory)
 	// global path to configuration file
 	configFilePath = filepath.Join(workingDirectory, *configFile)
 }
 func main() {
 	// open config
 	logger.Info("Trying to open config \"%s\"", configFilePath)
 	var conf *config.Conf
 	conf, err := config.OpenConfigFile(configFilePath)
 	if err != nil {
 		logger.Error(
 			"Failed to open configuration file: %s. Creating a new one with the same name instead...",
 			err,
 		)
 		err = config.CreateConfigFile(*config.Default(), configFilePath)
 		if err != nil {
 			logger.Error("Could not create new configuration file: %s", err)
 			return
 		}
 		logger.Info("Created new configuration file. Exiting...")
 		return
 	}
 	logger.Info("Successfully opened configuration file")
 	// Sanitize inputs
 	if len(conf.From) == 0 {
 		logger.Error("Configuration's from is not specified!")
 	}
 	if len(conf.Host) == 0 {
 		logger.Error("Configuration's host is not specified!")
 	}
 	if len(conf.FromHostPassword) == 0 {
 		logger.Error("Configuration's from_host_password is not specified!")
 	}
 	if len(conf.ToDBPath) == 0 {
 		logger.Error("Configuration's to_db_path is not specified!")
 	}
 	if len(conf.MessageFilePath) == 0 {
 		logger.Error("Configuration's message_file_path is not specified!")
 	}
 	// Retrieve email message
 	messageFile, err := os.Open(conf.MessageFilePath)
 	if err != nil {
 		logger.Error("Failed to open a message file: %s", err)
 		return
 	}
 	defer messageFile.Close()
 	isHtml := strings.HasSuffix(conf.MessageFilePath, ".html")
 	messageBytes, err := io.ReadAll(messageFile)
 	if err != nil {
 		logger.Error("Failed to read message contents: %s", err)
 		return
 	}
 	// Work out email addresses file
 	addressesFile, err := os.Open(conf.ToDBPath)
 	if err != nil {
 		logger.Error("Failed to open addresses file: %s", err)
 		return
 	}
 	defer addressesFile.Close()
 	// Authenticate!
 	mailDialer := gomail.NewDialer(conf.Host, int(conf.HostSMTPPort), conf.From, conf.FromHostPassword)
 	// Send message to every address
 	logger.Info("Starting to send...")
 	wg := &sync.WaitGroup{}
 	scanner := bufio.NewScanner(addressesFile)
 	for scanner.Scan() {
 		to := scanner.Text()
 		if len(to) == 0 {
 			continue
 		}
 		wg.Add(1)
 		go func(wg *sync.WaitGroup) {
 			defer wg.Done()
 			msg := gomail.NewMessage()
 			msg.SetHeader("From", conf.From)
 			msg.SetHeader("To", to)
 			msg.SetHeader("Subject", conf.MessageSubject)
 			for _, attachmentPath := range conf.MessageAttachmentPaths {
 				// Check if exists
 				stats, err := os.Stat(attachmentPath)
 				if err != nil || stats.IsDir() {
 					logger.Warning("%s does not exist or it is a directory. Skipping it...", attachmentPath)
 					continue
 				}
 				msg.Attach(attachmentPath)
 			}
 			if isHtml {
 				msg.SetBody(mime.TypeByExtension(".html"), string(messageBytes))
 			} else {
 				msg.SetBody(mime.TypeByExtension(".txt"), string(messageBytes))
 			}
 			err = mailDialer.DialAndSend(msg)
 			if err != nil {
 				logger.Info("Failed --> %s: %s", to, err)
 			} else {
 				logger.Info("Sent --> %s", to)
 			}
 		}(wg)
 		time.Sleep(time.Millisecond * time.Duration(conf.MessageSendDelayMS))
 	}
 	wg.Wait()
 	logger.Info("Completed")
 }