zabbix 发送邮件脚本

本文提供了一个完整的Zabbix发送邮件的脚本示例,并详细解释了如何解决邮件乱码及附件问题。此外还介绍了如何配置权限及使用PHP实现基于socket的邮件发送。

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关于如何zabbix发送邮件的文章有很多,但是关于zabbix发送邮件的脚本内容的资料却比较少。
下面是发送邮件的一个完整脚本。

#!/bin/bash
#export.UTF-8
#extract params
to=$1
subject=$2
body=$3

#convert mailbody
FILE=/usr/local/zabbix/share/zabbix/alertscripts/mailtmp.txt
echo "$body">$FILE
dos2unix -k $FILE

#send mail
mail -s "$subject" "$to" < $FILE

#log
time=`date "+%Y-%m-%d %H:%M:%S"`
log="[${time}]$#:to($1);subject($2)"
echo $log >> /var/log/zabbix_mail.log

其实发送邮件的命令很简单

mail -s "$subject" "$to" < $FILE

但是发送邮件可能会遇到乱码,以及邮件内容作为附件被发送的问题,上面的代码做了相关处理。

要注意的是,zabbix动作执行发送邮件操作的是zabbix用户,所以还要进行下面的权限配置。
zabbix用户需要对/var/log/zabbix_mail.log该日志文件具有rw权限。

setfacl -m u:zabbix:rw /var/log/zabbix_mail.log

执行dos2unix -k $FILE命令时,会在$FILE目录下创建临时文件,所以zabbix还需要对该文件夹具有rwx权限。

setfacl -m u:zabbix:rwx /usr/local/zabbix/share/zabbix/alertscripts/

通过sendmail发送邮件,需要服务器具有smtp服务,因为错误处理也需要发送短信模块,又使用php编写了基于socket的发送邮件操作,这种方式操作更加方便,推荐使用。

if(php_sapi_name() != "cli"){
    echo "It only work in cli module.";
    exit;
}
require 'mailto.php';
$mailto = $argv[1];
$subject = $argv[2];
$path = $argv[3];
if(!file_exists($path)) exit;
$err_msg = file_get_contents($path);
sendmailto($mailto,$subject,$err_msg);
$str = "send mail to ".$mailto."#".$subject;
$content = date("Y-m-d H:i:s");
$content = "[".$content."]".$str."\r\n";
file_put_contents("/var/log/hfShellSendMail.log",$content,FILE_APPEND);

mailto.php

<?php
class smtp
{
    /* Public Variables */
    var $smtp_port; //smtp_port 端口号
    var $time_out;
    var $host_name; //服务器主机名
    var $log_file;
    var $relay_host; //服务器主机地址
    var $debug;
    var $auth; //验证
    var $user; //服务器用户名
    var $pass; //服务器密码

    /* Private Variables */
    var $sock;

    /* Constractor 构造方法*/
    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       = true; //auth
        $this->user       = $user;
        $this->pass       = $pass;
        #
        $this->host_name  = "localhost"; //is used in HELO command
        // $this->host_name = "smtp.163.com"; //is used in HELO command
        $this->log_file   = "/var/log/colletErrorInterface.log";

        $this->sock = FALSE;
    }

    /* Main Function */
    function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
    {
        $header    = "";
        $mail_from = $this->get_address($this->strip_comment($from));
        $body      = mb_ereg_replace("(^|(\r\n))(\\.)", "\\1.\\3", $body);
        $header .= "MIME-Version:1.0\r\n";
        if ($mailtype == "HTML") { //邮件发送类型
            //$header .= "Content-Type:text/html\r\n";
            $header .= 'Content-type: text/html; charset=utf-8' . "\r\n";
        }
        $header .= "To: " . $to . "\r\n";
        if ($cc != "") {
            $header .= "Cc: " . $cc . "\r\n";
        }
        $header .= "From: " . $from . "\r\n";
        // $header .= "From: $from<".$from.">\r\n";   //这里只显示邮箱地址,不够人性化
        $header .= "Subject: " . $subject . "\r\n";
        $header .= $additional_headers;
        $header .= "Date: " . date("r") . "\r\n";
        $header .= "X-Mailer:By (PHP/" . phpversion() . ")\r\n";
        list($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))); //合并一个或多个数组
        }

        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",true);
            } else {
                $this->log_write("Error: Cannot send email to <" . $rcpt_to . ">\n",true);
                $sent = FALSE;
            }
            fclose($this->sock);
            $this->log_write("Disconnected from remote host\n");
        }
        //echo $header;
        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 (!mb_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($message,$must=false)
    {
        if ($this->debug || $must == true) {
            $message = "[".date("Y-m-d H-i-s")."]".$message;
            file_put_contents($this->log_file,$message,FILE_APPEND);
        }
    }

    function strip_comment($address)
    {
        $comment = "\\([^()]*\\)";
        while (mb_ereg($comment, $address)) {
            $address = mb_ereg_replace($comment, "", $address);
        }

        return $address;
    }

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

        return $address;
    }

    function smtp_debug($message)
    {
        if ($this->debug) {
            echo $message . "<br>";
        }
    }

    function get_attach_type($image_tag) //
    {

        $filedata = array();

        $img_file_con = fopen($image_tag, "r");
        $image_data = '';
        while ($tem_buffer = AddSlashes(fread($img_file_con, filesize($image_tag))))
            $image_data .= $tem_buffer;
        fclose($img_file_con);

        $filedata['context']  = $image_data;
        $filedata['filename'] = basename($image_tag);
        $extension            = substr($image_tag, strrpos($image_tag, "."), strlen($image_tag) - strrpos($image_tag, "."));
        switch ($extension) {
            case ".gif":
                $filedata['type'] = "image/gif";
                break;
            case ".gz":
                $filedata['type'] = "application/x-gzip";
                break;
            case ".htm":
                $filedata['type'] = "text/html";
                break;
            case ".html":
                $filedata['type'] = "text/html";
                break;
            case ".jpg":
                $filedata['type'] = "image/jpeg";
                break;
            case ".tar":
                $filedata['type'] = "application/x-tar";
                break;
            case ".txt":
                $filedata['type'] = "text/plain";
                break;
            case ".zip":
                $filedata['type'] = "application/zip";
                break;
            default:
                $filedata['type'] = "application/octet-stream";
                break;
        }


        return $filedata;
    }

}
function sendmailto($mailto, $mailsub, $mailbd)
{
    //##########################################
    $smtpserver     = "smtp.163.com"; //SMTP服务器
    $smtpserverport = 25; //SMTP服务器端口
    $smtpusermail   = "username@163.com"; //SMTP服务器的用户邮箱
    $smtpemailto    = $mailto;
    $smtpuser       = "username@163.com"; //SMTP服务器的用户帐号
    $smtppass       = "password"; //SMTP服务器的用户密码
    $mailsubject    = $mailsub; //邮件主题
    $mailsubject    = "=?UTF-8?B?" . base64_encode($mailsubject) . "?="; //防止乱码
    $mailbody       = $mailbd; //邮件内容
    //$mailbody = "=?UTF-8?B?".base64_encode($mailbody)."?="; //防止乱码
    $mailtype       = "HTML"; //邮件格式(HTML/TXT),TXT为文本邮件. 139邮箱的短信提醒要设置为HTML才正常
    ##########################################
    $smtp           = new smtp($smtpserver, $smtpserverport, true, $smtpuser, $smtppass); //这里面的一个true是表示使用身份验证,否则不使用身份验证.
    $smtp->debug    = FALSE; //是否显示发送的调试信息
    $smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);
}
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