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邮件通知更新天数功能介绍:当用户多少天没有登录站点的时候才会给其发送邮件通知。
邮件通知更新天数的位置:后台-》全局-》空间设置-》基本设置下的邮件通知更新天数,如图。
设置为0则不启用该功能,单位为天。
功能分析:
比如用户A回复了用户B的帖子,这时候在用户A回复用户B帖子的同时会执行下面这个操作。
具体文件:sourceincludepostpost_newreply.php的98行附近。
- notification_add($post['authorid'], 'pcomment', 'comment_add', array(
- 'tid' => $_G['tid'],
- 'pid' => $_G['gp_pid'],
- 'subject' => $thread['subject'],
- 'commentmsg' => cutstr(str_replace(array('[b]', '[/b]', '[/color]'), '', preg_replace("/\[color=([#\w]+?)\]/i", "", stripslashes($comment))), 200)
- ));
复制代码 notification_add()函数是在source/function/function_core.php文件定义的,1897行附近,具体代码如下:
- function notification_add($touid, $type, $note, $notevars = array(), $system = 0) {
- global $_G;
- $tospace = array('uid'=>$touid);
- space_merge($tospace, 'field_home');
- $filter = empty($tospace['privacy']['filter_note'])?array():array_keys($tospace['privacy']['filter_note']);
- if($filter && (in_array($type.'|0', $filter) || in_array($type.'|'.$_G['uid'], $filter))) {
- return false;
- }
- $notevars['actor'] = "<a href="home.php?mod=space&uid=$_G[uid]">".$_G['member']['username']."</a>";
- if(!is_numeric($type)) {
- $vars = explode(':', $note);
- if(count($vars) == 2) {
- $notestring = lang('plugin/'.$vars[0], $vars[1], $notevars);
- } else {
- $notestring = lang('notification', $note, $notevars);
- }
- $frommyapp = false;
- } else {
- $frommyapp = true;
- $notestring = $note;
- }
- $oldnote = array();
- if($notevars['from_id'] && $notevars['from_idtype']) {
- $oldnote = DB::fetch_first("SELECT * FROM ".DB::table('home_notification')."
- WHERE uid='$touid' AND from_id='$notevars[from_id]' AND from_idtype='$notevars[from_idtype]'");
- }
- if(empty($oldnote['from_num'])) $oldnote['from_num'] = 0;
- $notevars['from_num'] = $notevars['from_num'] ? $notevars['from_num'] : 1;
- $setarr = array(
- 'uid' => $touid,
- 'type' => $type,
- 'new' => 1,
- 'authorid' => $_G['uid'],
- 'author' => $_G['username'],
- 'note' => addslashes($notestring),
- 'dateline' => $_G['timestamp'],
- 'from_id' => $notevars['from_id'],
- 'from_idtype' => $notevars['from_idtype'],
- 'from_num' => ($oldnote['from_num']+$notevars['from_num'])
- );
- if($system) {
- $setarr['authorid'] = 0;
- $setarr['author'] = '';
- }
- if($oldnote['id']) {
- DB::update('home_notification', $setarr, array('id'=>$oldnote['id']));
- } else {
- $oldnote['new'] = 0;
- DB::insert('home_notification', $setarr);
- }
- if(empty($oldnote['new'])) {
- DB::query("UPDATE ".DB::table('common_member')." SET newprompt=newprompt+1 WHERE uid='$touid'");
- require_once libfile('function/mail');
- $mail_subject = lang('notification', 'mail_to_user');
- sendmail_touser($touid, $mail_subject, $notestring, $frommyapp ? 'myapp' : $type);
- }
- if(!$system && $_G['uid'] && $touid != $_G['uid']) {
- DB::query("UPDATE ".DB::table('home_friend')." SET num=num+1 WHERE uid='$_G[uid]' AND fuid='$touid'");
- }
- }
复制代码 前面都是给相应用户发送提醒操作,具体不再此处进行分析,单独看发送邮件代码,如下:
- require_once libfile('function/mail');
- $mail_subject = lang('notification', 'mail_to_user');
- sendmail_touser($touid, $mail_subject, $notestring, $frommyapp ? 'myapp' : $type);
复制代码 这里会执行sendmail_touser()函数,$mail_subject是邮件标题,$notestring是提醒的内容,$frommyapp是操作的类型。
sendmail_touser()函数是在source\function\function_mail.php文件里定义的,204行附近,具体代码如下:
- function sendmail_touser($touid, $subject, $message, $mailtype='') {
- global $_G;
- if(empty($_G['setting']['sendmailday'])) return false;
- require_once libfile('function/home');
- $tospace = getspace($touid);
- if(empty($tospace['email'])) return false;
- space_merge($tospace, 'field_home');
- space_merge($tospace, 'status');
- $acceptemail = $tospace['acceptemail'];
- if(!empty($acceptemail[$mailtype]) && $_G['timestamp'] - $tospace['lastvisit'] > $_G['setting']['sendmailday']*86400) {
- if(empty($tospace['lastsendmail'])) {
- $tospace['lastsendmail'] = $_G['timestamp'];
- }
- $sendtime = $tospace['lastsendmail'] + $acceptemail['frequency'];
- $query = DB::query("SELECT * FROM ".DB::table('common_mailcron')." WHERE touid='$touid' LIMIT 1");
- if($value = DB::fetch($query)) {
- $cid = $value['cid'];
- if($value['sendtime'] < $sendtime) $sendtime = $value['sendtime'];
- DB::update('common_mailcron', array('email'=>addslashes($tospace['email']), 'sendtime'=>$sendtime), array('cid'=>$cid));
- } else {
- $cid = DB::insert('common_mailcron', array('touid'=>$touid, 'email'=>addslashes($tospace['email']), 'sendtime'=>$sendtime), 1);
- }
- $message = preg_replace("/href\="(?!http\:\/\/)(.+?)"/i", 'href="'.$_G['siteurl'].'\\1"', $message);
- $setarr = array(
- 'cid' => $cid,
- 'subject' => addslashes($subject),
- 'message' => addslashes($message),
- 'dateline' => $_G['timestamp']
- );
- DB::insert('common_mailqueue', $setarr);
- return true;
- }
- return false;
- }
复制代码 下面具体分析代码的执行过程:
- if(empty($_G['setting']['sendmailday'])) return false;
复制代码 首先会判断$_G['setting']['sendmailday']变量是否存在,如果不存在则直接返回false。$_G['setting']['sendmailday']就是后台设置的邮件通知更新天数。
- require_once libfile('function/home');
- $tospace = getspace($touid);
- if(empty($tospace['email'])) return false;
复制代码 getspace($touid)是要获取发送对象的详细信息,如果该用户没有设置邮箱,就直接返回false。
- space_merge($tospace, 'field_home');
- space_merge($tospace, 'status');
- $acceptemail = $tospace['acceptemail'];
复制代码 前两句是查询该用户的相关信息。
$tospace['acceptemail']是该用户设置的邮件提醒。邮件提醒设置的具体位置在家园的设置-》邮件提醒。
- if(!empty($acceptemail[$mailtype]) && $_G['timestamp'] - $tospace['lastvisit'] > $_G['setting']['sendmailday']*86400) {
复制代码 首先判断该类型的操作是否进行邮件提醒(判断$acceptemail[$mailtype]变量是否存在),同时判断当前时间(TIMESTAMP)- 用户上一次的活动时间($tospace['lastvisit']) > 后台设置的邮件通知更新天数($_G['setting']['sendmailday'])*86400。不满足则跳出if判断,返回false。
- if(empty($tospace['lastsendmail'])) {
- $tospace['lastsendmail'] = $_G['timestamp'];
- }
复制代码 如果用户上一次发送邮件的时间不存在,那么就赋予当前时间给$tospace['lastsendmail']。
- $sendtime = $tospace['lastsendmail'] + $acceptemail['frequency'];
复制代码 计算发送邮件的时间,$acceptemail['frequency']为邮件提醒里的发送频率设置。
- $query = DB::query("SELECT * FROM ".DB::table('common_mailcron')." WHERE touid='$touid' LIMIT 1");
- if($value = DB::fetch($query)) {
- $cid = $value['cid'];
- if($value['sendtime'] < $sendtime) $sendtime = $value['sendtime'];
- DB::update('common_mailcron', array('email'=>addslashes($tospace['email']), 'sendtime'=>$sendtime), array('cid'=>$cid));
- } else {
- $cid = DB::insert('common_mailcron', array('touid'=>$touid, 'email'=>addslashes($tospace['email']), 'sendtime'=>$sendtime), 1);
- }
复制代码 首先到common_mailcron表里查询是否有向该用户发送邮件的邮件任务。如果存在就更新任务,如果不存在就往表里新插入一条任务。
- $message = preg_replace("/href\="(?!http\:\/\/)(.+?)"/i", 'href="'.$_G['siteurl'].'\\1"', $message);
- $setarr = array(
- 'cid' => $cid,
- 'subject' => addslashes($subject),
- 'message' => addslashes($message),
- 'dateline' => $_G['timestamp']
- );
- DB::insert('common_mailqueue', $setarr);
- return true;
复制代码 前面是对内容进行处理,然后往common_mailqueue表里插入一条数据,返回true。
至此,相应的邮件任务已经添加,但是邮件还没有发送。下面看下邮件任务是如何触发处理的。
在template\default\common\footer.htm文件,79行附近,找到如下代码。
- <!--{if !isset($_G['cookie']['sendmail'])}-->
- <script type="text/javascript" src="home.php?mod=misc&ac=sendmail&rand=$_G[timestamp]"></script>
- <!--{/if}-->
复制代码 如果不存在$_G['cookie']['sendmail'],那么就会输出一个js。
看js的src地址,是进入到了source\include\misc\misc_sendmail.php文件中,下面只分析重点,其他不做分析。
- $query = DB::query("SELECT * FROM ".DB::table('common_mailcron')." WHERE sendtime<='$_G[timestamp]' ORDER BY sendtime LIMIT 0,$pernum");
- while ($value = DB::fetch($query)) {
- if($value['touid']) $touids[$value['touid']] = $value['touid'];
- $cids[] = $value['cid'];
- $list[$value['cid']] = $value;
- }
- if(empty($cids)) exit();
- $query = DB::query("SELECT * FROM ".DB::table('common_mailqueue')." WHERE cid IN (".dimplode($cids).")");
- while ($value = DB::fetch($query)) {
- $sublist[$value['cid']][] = $value;
- }
复制代码 从common_mailcron和common_mailqueue表分别查询数据然后赋值。
- if($touids) {
- DB::query("UPDATE ".DB::table('common_member_status')." SET lastsendmail='$_G[timestamp]' WHERE uid IN (".dimplode($touids).")");
- }
复制代码 更新common_member_status表里用户的最后发送邮件时间。
- DB::query("DELETE FROM ".DB::table('common_mailcron')." WHERE cid IN (".dimplode($cids).")");
- DB::query("DELETE FROM ".DB::table('common_mailqueue')." WHERE cid IN (".dimplode($cids).")");
复制代码 删除common_mailcron表里跟common_mailqueue表里删除相应的任务。
- require_once libfile('function/mail');
- foreach ($list as $cid => $value) {
- $mlist = $sublist[$cid];
- if($value['email'] && $mlist) {
- $subject = getstr($mlist[0]['subject'], 80, 0, 0, 0, -1);
- $message = '';
- foreach ($mlist as $subvalue) {
- if($subvalue['message']) {
- $message .= "<br><strong>$subvalue[subject]</strong><br>$subvalue[message]<br>";
- } else {
- $message .= $subvalue['subject'].'<br>';
- }
- }
- if(!sendmail($value['email'], $subject, $message)) {
- runlog('sendmail', "$value[email] sendmail failed.");
- }
- }
- }
复制代码 执行相应的发送邮件操作。
至此邮件就发送出去了。
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