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本篇內容主要講解“如何實現腳本SSH登錄郵件報警”,感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷,實用性強。下面就讓小編來帶大家學習“如何實現腳本SSH登錄郵件報警”吧!
登錄保護是一個非常重要的環節,下面通過圖文并茂的方式給大家詳細講解下:
前兩天@cyy 給我發了一個圖
然后我就想到USHQ的ssh登錄app通知功能,然后就像如果把這個部署到自用的服務器就好了。至少多一層安全系數。
首先要感謝@Legion 幫忙搞定了幾個錯誤以及搞定了Geo2IP的JSON轉換。 (P.S.此人為自動化運維大神級人物,現任職于德國一數據統計企業。)
當然,我和他相比我就是戰五渣了...大家一定要多向 @Legion 學習啊~~
說下需要做的準備:
sendmail或者Postfix
php
bash
CentOS/Debian/Ubuntu
若你的生產環境中沒有php sendmail Postfix等組件,請移步:
@Legion: Linux之使用shell腳本實現ssh登錄報警
參考文件
首先是報警腳本文件
Shell
#!/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 #請自行準備郵件模板,以下為可能用到的變量 #輸出主機名 `hostname` #輸出登錄端口 ${SSH_CLIENT##* } #輸出登錄來源IP ${SSH_CLIENT%% *} #輸出IP地址歸屬地 {country}_${area}_${region}_${city}_${isp} #輸出登錄時間 `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`]服務器登錄告警 #`cat mail-no-base64.html` #EOF #使用postfix #cat >> mail.php <<EOF #<?php #\$to = "example@example.com"; #\$subject = "[`hostname`]服務器登錄告警"; #\$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`]服務器登錄告警"; \$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
然后是如何觸發這個腳本:
Shell
代碼如下:
echo "screen -fa -d -m -S WL /etc/Login-alert.sh" >> /etc/profile
用這種方法, 新開終端或者復制終端都會觸發報警
如果使用smtp方式,請保存以下文件為smtp-class.php
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; } } }
?>
實現效果:
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