Admins eHow SysAdmin Tips & Tricks

April 26, 2017

Email to Telegram gateway

Filed under: PHP — Tags: , , , — admin @ 7:21 am

1.Create your own Telegram bot based on this tutorial :
https://www.domoticz.com/wiki/Telegram_Bot
or this one :
https://www.forsomedefinition.com/automation/creating-telegram-bot-notifications/
2.Create an email forwarder in cPanel and pipe it into a PHP script. make sure the script is executable (755 permission).
3.Here is the php script that will forward the email to your telegram bot :
Dont forget to adjust $url variable in telegram function based on first step.

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#!/usr/local/bin/php -q
<?php
function mailRead($iKlimit = "")
{
    if ($iKlimit == "") {
        $iKlimit = 1024;
    }
    $sErrorSTDINFail = "Error - failed to read mail from STDIN!";
    $fp = fopen("php://stdin", "r");
    if (!$fp) {
        echo $sErrorSTDINFail;
        exit();
    }
    $sEmail = "";
    if ($iKlimit == - 1) {
        while (!feof($fp)) {
            $sEmail .= fread($fp, 1024);
        }
    }
    else {
        while (!feof($fp) && $i_limit < $iKlimit) {
            $sEmail .= fread($fp, 1024);
            $i_limit++;
        }
    }
    fclose($fp);
    return $sEmail;
}
 
function telegram($m)
{
    $url = 'https://api.telegram.org/botxxxxxxx:xxxxxxxxx/sendMessage?chat_id=xxxxx&text=';
    $url .= urlencode($m);
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($ch);
    curl_close($ch);
}
 
$mail = mailRead(4096);
$lines = explode("\n", $mail);
 
$from = "";
$subject = "";
$headers = "";
$message = "";
$splittingheaders = true;
 
for ($i = 0; $i < count($lines); $i++) {
    if ($splittingheaders) {
        $headers .= $lines[$i] . "\n";
        if (preg_match("/^Subject: (.*)/", $lines[$i], $matches)) {
            $subject = $matches[1];
        }
        if (preg_match("/^From: (.*)/", $lines[$i], $matches)) {
            $from = $matches[1];
        }
        if (preg_match("/^To: (.*)/", $lines[$i], $matches)) {
            $to = $matches[1];
        }
    }
    else {
        $message .= $lines[$i] . "\n";
    }
    if (trim($lines[$i]) == "") {
        $splittingheaders = false;
    }
}
 
telegram("From: $from\nSubject: $subject\nMessage: $message");
?>

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