#!/bin/sh
#########################################################################
# File Name: Login-alert.sh
# Author: Jason
# Email: master#deamwork.com
# Created Time: Tue Jul 21 2015 21:23:16 PM CST 
#########################################################################

#require jq
#wget http://stedolan.github.io/jq/download/linux64/jq -O /usr/local/bin/jq
#chmod +x /usr/local/bin/jq

#if error, please # following one
#PATH=/usr/local/nginx/sbin:/usr/local/php/bin:/usr/local/mysql/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin

#Geo2IP by Legion(http://www.dwhd.org/)
eval `curl -s "http://ip.taobao.com/service/getIpInfo.php?ip=${SSH_CLIENT%% *}" | jq . | awk -F':|[ ]+|"' '{if($3~/^(country|area|region|city|isp)$/){print $3"="$7}}'`

#html mail content
cat >> mail-no-base64.html <<EOF
#请自行准备邮件模板，以下为可能用到的变量
#输出主机名 `hostname`
#输出登录端口 ${SSH_CLIENT##* }
#输出登录来源IP ${SSH_CLIENT%% *}
#输出IP地址归属地 {country}_${area}_${region}_${city}_${isp}
#输出登录时间 `date`
EOF

#Base64 Encoding
base64 mail-no-base64.html > mail-base64.html

#使用Sendmail
#sendmail -t >/dev/null 2>&1 <<EOF
#to:example@example.com
#from:Example<example@example.com>
#subject:[`hostname`]服务器登录告警

#`cat mail-no-base64.html`

#EOF

#使用postfix
#cat >> mail.php <<EOF
#<?php
#\$to = "example@example.com";
#\$subject = "[`hostname`]服务器登录告警";
#\$message = "`cat mail-base64.html`";
#\$headers = "MIME-Version: 1.0" . "\r\n";
#\$headers .= "Content-Type: text/html; charset=\"utf-8\"" . "\r\n";
#\$headers .= "Content-Transfer-Encoding: base64" . "\r\n";
#\$headers .= 'From: Example<example@example.com>' . "\r\n";
#\$send = mail(\$to,\$subject,\$message,\$headers);
#if(\$send){echo 'Mail Send Successful.';}else{echo 'Failed.';}
#?>
#EOF

#使用 SMTP (require smtp-class.php)
cat >> mail.php <<EOF
<?php
require("smtp-class.php"); 
\$smtpserver = "smtp.example.com";
\$smtpserverport = 25;
\$smtpusermail = "example@example.com";
\$smtpemailto = "example@example.com";
\$smtpuser = "example";
\$smtppass = "password";
\$mailsubject = "[`hostname`]服务器登录告警";
\$mailbody = "`cat mail-base64.html`";
\$mailtype = "HTML";
\$smtp = new smtp(\$smtpserver,\$smtpserverport,true,\$smtpuser,\$smtppass);
\$smtp->debug = TRUE;
\$smtp->sendmail(\$smtpemailto, \$smtpusermail, \$mailsubject, \$mailbody, \$mailtype); 
?>
EOF
php mail.php
yes y | rm mail-no-base64.html mail-base64.html mail.php

<?php
class smtp
{
 /* Public Variables */
 var $smtp_port;
 var $time_out;
 var $host_name;
 var $log_file;
 var $relay_host;
 var $debug;
 var $auth;
 var $user;
 var $pass;

 /* Private Variables */ 
 var $sock;

 /* Constractor */
 function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass)
 {
  $this->debug = FALSE;
  $this->smtp_port = $smtp_port;
  $this->relay_host = $relay_host;
  $this->time_out = 30; //is used in fsockopen() 
  $this->auth = $auth;//auth
  $this->user = $user;
  $this->pass = $pass;
  $this->host_name = "localhost"; //is used in HELO command 
  $this->log_file = "";
  $this->sock = FALSE;
}

 /* Main Function */
 function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
 {
  $mail_from = $this->get_address($this->strip_comment($from));
  $body = ereg_replace("(^|(\r\n))(\.)", "\1.\3", $body);
  $header .= "MIME-Version:1.0\r\n";
  if($mailtype=="HTML")
  {
   $header .= "Content-Type: text/html; charset=\"utf-8\"" . "\r\n";
   $header .= "Content-Transfer-Encoding: base64" . "\r\n";
  }
  $header .= "To: ".$to."\r\n";
  if ($cc != "") 
  {
   $header .= "Cc: ".$cc."\r\n";
  }
  $header .= "From: $from<".$from.">\r\n";
  $header .= "Subject: ".$subject."\r\n";
  $header .= $additional_headers;
  $header .= "Date: ".date("r")."\r\n";
  $header .= "X-Mailer:By TianhaiTech (PHP/".phpversion().")\r\n";
  list($msec, $sec) = explode(" ", microtime());
  $header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";
  $TO = explode(",", $this->strip_comment($to));

  if ($cc != "") 
  {
   $TO = array_merge($TO, explode(",", $this->strip_comment($cc)));
   }
  if ($bcc != "") 
  {
   $TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
  }
  $sent = TRUE;
  foreach ($TO as $rcpt_to) 
  {
   $rcpt_to = $this->get_address($rcpt_to);
   if (!$this->smtp_sockopen($rcpt_to)) 
   {
    $this->log_write("Error: Cannot send email to ".$rcpt_to."\n");
    $sent = FALSE;
    continue;
   }
   if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) 
   {
    $this->log_write("E-mail has been sent to <".$rcpt_to.">\n");
   } 
   else 
   {
    $this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");
    $sent = FALSE;
   }
   fclose($this->sock);
   $this->log_write("Disconnected from remote host\n");
  }
  return $sent;
 }

 /* Private Functions */
 function smtp_send($helo, $from, $to, $header, $body = "")
 {
  if (!$this->smtp_putcmd("HELO", $helo)) 
  {
   return $this->smtp_error("sending HELO command");
  }

  #auth
  if($this->auth)
  {
   if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) 
   {
    return $this->smtp_error("sending HELO command");
   }
   if (!$this->smtp_putcmd("", base64_encode($this->pass))) 
   {
    return $this->smtp_error("sending HELO command");
   }
  }
  if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) 
  {
   return $this->smtp_error("sending MAIL FROM command");
  }
  if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) 
  {
   return $this->smtp_error("sending RCPT TO command");
  }
  if (!$this->smtp_putcmd("DATA"))
  {
   return $this->smtp_error("sending DATA command");
  }
  if (!$this->smtp_message($header, $body)) 
  {
   return $this->smtp_error("sending message");
  }
  if (!$this->smtp_eom())
  {
   return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
  }
  if (!$this->smtp_putcmd("QUIT")) 
  {
   return $this->smtp_error("sending QUIT command");
  }
  return TRUE;
 }

 function smtp_sockopen($address)
 {
  if ($this->relay_host == "") 
  {
   return $this->smtp_sockopen_mx($address);
  } 
  else
  {
   return $this->smtp_sockopen_relay();
  }
 }

 function smtp_sockopen_relay()
 {
  $this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");
  $this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
  if (!($this->sock && $this->smtp_ok())) 
  {
   $this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");
   $this->log_write("Error: ".$errstr." (".$errno.")\n");
   return FALSE;
  }
  $this->log_write("Connected to relay host ".$this->relay_host."\n");
  return TRUE;;
 }

 function smtp_sockopen_mx($address)
 {
  $domain = ereg_replace("^.+@([^@]+)$", "\1", $address);
  if (!@getmxrr($domain, $MXHOSTS)) 
  {
   $this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");
   return FALSE;
  }
  foreach ($MXHOSTS as $host) 
  {
   $this->log_write("Trying to ".$host.":".$this->smtp_port."\n");
   $this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
   if (!($this->sock && $this->smtp_ok())) 
   {
    $this->log_write("Warning: Cannot connect to mx host ".$host."\n");
    $this->log_write("Error: ".$errstr." (".$errno.")\n");
    continue;
   }
   $this->log_write("Connected to mx host ".$host."\n");
   return TRUE;
  }
  $this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");
  return FALSE;
 }

 function smtp_message($header, $body)
 {
  fputs($this->sock, $header."\r\n".$body);
  $this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));
  return TRUE;
 }

 function smtp_eom()
 {
  fputs($this->sock, "\r\n.\r\n");
  $this->smtp_debug(". [EOM]\n");
  return $this->smtp_ok();
 }

 function smtp_ok()
 {
  $response = str_replace("\r\n", "", fgets($this->sock, 512));
  $this->smtp_debug($response."\n");
  if (!ereg("^[23]", $response)) 
  {
   fputs($this->sock, "QUIT\r\n");
   fgets($this->sock, 512);
   $this->log_write("Error: Remote host returned \"".$response."\"\n");
   return FALSE;
  }
  return TRUE;
 }

 function smtp_putcmd($cmd, $arg = "")
 {
  if ($arg != "") 
  {
   if($cmd=="") 
   {
    $cmd = $arg;
   }
   else
   {
    $cmd = $cmd." ".$arg;
   }
  }
  fputs($this->sock, $cmd."\r\n");
  $this->smtp_debug("> ".$cmd."\n");
  return $this->smtp_ok();
 }

 function smtp_error($string)
 {
  $this->log_write("Error: Error occurred while ".$string.".\n");
  return FALSE;
 }

 function log_write($message)
 {
  $this->smtp_debug($message);
  if ($this->log_file == "")
  {
   return TRUE;
  }
  $message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;
  if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) 
  {
   $this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");
   return FALSE;;
  }
  flock($fp, LOCK_EX);
  fputs($fp, $message);
  fclose($fp);
  return TRUE;
 }

 function strip_comment($address)
 {
  $comment = "\([^()]*\)";
  while (ereg($comment, $address)) 
  {
   $address = ereg_replace($comment, "", $address);
  }
  return $address;
 }

 function get_address($address)
 {
  $address = ereg_replace("([ \t\r\n])+", "", $address);
  $address = ereg_replace("^.*<(.+)>.*$", "\1", $address);
  return $address;
 }

 function smtp_debug($message)
 {
  if ($this->debug) 
  {
   echo $message;
  }
 }

}