Gurkengewuerz/go-autoresponder
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Towards first version.

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This commit is contained in:
urosj 2017-07-25 19:32:24 +02:00
parent ecf6948d93
commit b42a3a8e29
1 changed files with 162 additions and 15 deletions
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177
cmd/autoresponder.go
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@ -31,9 +31,11 @@ package main
import (
"fmt"
"flag"
"time"
"os"
"os/exec"
"io"
"io/ioutil"
"bufio"
"path/filepath"
"strings"
@ -108,7 +110,7 @@ func setAutoresponseViaEmail(recipient, sender, saslUser, clientIp string) error
}
if ! fileExists(senderResponsePath) {
syslg.Info(fmt.Sprintf("Autoresponse disabled for address: %v by SASL authenticated user: %v from: %v",
syslg.Info(fmt.Sprintf("Autoresponse disabled for address %v by SASL authenticated user: %v from: %v",
sender, saslUser, clientIp))
// Send mail via sendmail
sendMail(recipient, sender, func(sink io.WriteCloser) {
@ -173,7 +175,20 @@ func setAutoresponseViaEmail(recipient, sender, saslUser, clientIp string) error
return err
}
}
//!!!
if fileExists(senderResponsePath) {
syslg.Info(fmt.Sprintf("Autoresponse enabled for address %v by SASL authenticated user: %v from: %v",
sender, saslUser, clientIp))
// Send mail via sendmail
sendMail(recipient, sender, func(sink io.WriteCloser) {
defer sink.Close()
sink.Write([]byte(fmt.Sprintf("From: %v\nTo: %v\nSubject: Autoresponder\n\n"+
"Autoresponse enabled for %v by SASL authenticated user: %v from: %v\n",
recipient, sender, sender, saslUser, clientIp)))
})
} else {
return fmt.Errorf("Autoresponse could not be enabled for address %v", sender)
}
}
return nil
@ -186,23 +201,156 @@ func forwardEmailAndAutoresponse(recipient, sender, saslUser, clientIp string, r
return nil
}
// Get text editor
func getTextEditor() string {
editor := os.Getenv("EDITOR")
if editor == "" {
editor = "vi"
}
return editor
}
// Get file modification time
func getFileModTime(name string) (t time.Time, err error) {
st, err := os.Stat(name)
if err != nil {
return t, err
}
t = st.ModTime()
return
}
// Enable autoresponse for email
func enableAutoresponse(email string) error {
//!!!
emailResponsePath := filepath.Join(RESPONSE_DIR, email)
editFilePath := emailResponsePath
// If editFilePath does not exist, also try to enable previosly disabled autoresponse
if ! fileExists(editFilePath) {
enableExAutoresponse(email, true)
}
// If file does not exist yet, create template file as tmp file
var oldModTime, newModTime time.Time
if ! fileExists(editFilePath) {
editFile, err := ioutil.TempFile("", "autoresponder")
if err != nil {
return err
}
editFilePath = editFile.Name()
defer os.Remove(editFilePath)
writer := bufio.NewWriter(editFile)
// Write template to file
writer.WriteString(fmt.Sprintf(`From: %v
To: THIS GETS REPLACED
Subject: Autoresponder
mail body`, email))
writer.Flush()
editFile.Close()
}
oldModTime, err := getFileModTime(editFilePath)
if err != nil {
return err
}
// Invoke either EDITOR environment or vi command
cmd := exec.Command(getTextEditor(), editFilePath)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
err = cmd.Run()
if err != nil {
return err
}
newModTime, err = getFileModTime(editFilePath)
if err != nil {
return err
}
if oldModTime != newModTime {
if emailResponsePath != editFilePath {
// Open editFilePath for reading and emailResponsePath for writing and Copy content over
tmpFl, err := os.Open(editFilePath)
if err != nil {
return err
}
defer tmpFl.Close()
resFl, err := os.OpenFile(emailResponsePath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0660)
if err != nil {
return err
}
resFl.Chmod(0660)
defer resFl.Close()
_, err = io.Copy(resFl, tmpFl)
if err != nil {
return err
}
}
msg := fmt.Sprintf("Edited %v", emailResponsePath)
syslg.Info(msg)
fmt.Println(msg)
} else {
msg := fmt.Sprintf("Editing %v aborted!", emailResponsePath)
fmt.Println(msg)
return fmt.Errorf("%v", msg)
}
return nil
}
// Disable autoresponse for email
func disableAutoresponse(email string) error {
//!!!
emailResponsePath := filepath.Join(RESPONSE_DIR, email)
if fileExists(emailResponsePath) {
disableEmailResponsePath := emailResponsePath + "_DISABLED"
os.Remove(disableEmailResponsePath)
err := os.Rename(emailResponsePath, disableEmailResponsePath)
if err != nil {
return err
}
msg := fmt.Sprintf("Disabled %v", emailResponsePath)
syslg.Info(msg)
fmt.Println(msg)
} else {
msg := fmt.Sprintf("%v does not exist, thus it cannot be disabled!", emailResponsePath)
fmt.Println(msg)
return fmt.Errorf("%v", msg)
}
return nil
}
// Enable existing autoresponse for email
func enableExAutoresponse(email string) error {
//!!!
func enableExAutoresponse(email string, nostdout bool) error {
emailResponsePath := filepath.Join(RESPONSE_DIR, email)
disableEmailResponsePath := emailResponsePath + "_DISABLED"
if fileExists(disableEmailResponsePath) {
os.Remove(emailResponsePath)
err := os.Rename(disableEmailResponsePath, emailResponsePath)
if err != nil {
return err
}
msg := fmt.Sprintf("Enabled %v", emailResponsePath)
syslg.Info(msg)
fmt.Println(msg)
} else {
msg := fmt.Sprintf("%v does not exist, thus it cannot be enabled!", disableEmailResponsePath)
if ! nostdout {
fmt.Println(msg)
}
return fmt.Errorf("%v", msg)
}
return nil
}
@ -219,6 +367,11 @@ func deleteAutoresponse(email string, nostdout bool) error {
}
return fmt.Errorf("%v", msg)
}
msg := fmt.Sprintf("Delete %v done", deleteResponsePath)
if ! nostdout {
fmt.Println(msg)
}
syslg.Info(msg)
} else {
msg := fmt.Sprintf("%v does not exist, thus it cannot be deleted!", deleteResponsePath)
if ! nostdout {
@ -319,11 +472,11 @@ func main() {
*senderPtr = strings.Replace(*senderPtr, "/", "", -1)
recipientParts := strings.Split(*recipientPtr, "@")
senderParts := strings.Split(*senderPtr, "@")
if len(recipientParts) < 2 {
if *recipientPtr != "" && len(recipientParts) < 2 {
syslg.Err(fmt.Sprintf("Invalid recipient %v", *recipientPtr))
os.Exit(1)
}
if len(senderParts) < 2 {
if *senderPtr != "" && len(senderParts) < 2 {
syslg.Err(fmt.Sprintf("Invalid sender %v", *senderPtr))
os.Exit(1)
}
@ -343,7 +496,6 @@ func main() {
}
err := setAutoresponseViaEmail(*recipientPtr, *senderPtr, *saslUserPtr, *clientIpPtr)
//!!!
if err != nil {
syslg.Err(err.Error())
os.Exit(1)
@ -365,7 +517,6 @@ func main() {
syslg.Info(fmt.Sprintf("Requested enable autoresponse for %v", *enableAutoResponsePtr))
err := enableAutoresponse(*enableAutoResponsePtr)
//!!!
if err != nil {
syslg.Err(err.Error())
os.Exit(1)
@ -376,7 +527,6 @@ func main() {
syslg.Info(fmt.Sprintf("Requested disable autoresponse for %v", *disableAutoResponsePtr))
err := disableAutoresponse(*disableAutoResponsePtr)
//!!!
if err != nil {
syslg.Err(err.Error())
os.Exit(1)
@ -386,8 +536,7 @@ func main() {
case mode == 1 && *enableExAutoResponsePtr != "":
syslg.Info(fmt.Sprintf("Requested enable existing autoresponse for %v", *enableExAutoResponsePtr))
err := enableExAutoresponse(*enableExAutoResponsePtr)
//!!!
err := enableExAutoresponse(*enableExAutoResponsePtr, false)
if err != nil {
syslg.Err(err.Error())
os.Exit(1)
@ -398,11 +547,9 @@ func main() {
syslg.Info(fmt.Sprintf("Requested delete autoresponse for %v", *deleteAutoResponsePtr))
err := deleteAutoresponse(*deleteAutoResponsePtr, false)
//!!!
if err != nil {
syslg.Err(err.Error())
os.Exit(1)
}
}
//!!!
}