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lib_email.php
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<?php
/*
* Copyright (c) 2006-2012 Oliver Seidel (email : oliver.seidel @ deliciousdays.com)
* Copyright (c) 2014 Bastian Germann
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
class cforms2_mail {
public $eolH;
public $eol;
public $html_show;
public $html_show_ac;
public $f_txt;
public $f_html;
public $frommail;
public $priority = 3;
public $char_set = 'utf-8';
public $content_type = 'text/plain';
public $enc = '8bit';
public $err = '';
public $from = '';
public $fname = 'cforms';
public $split_to = false;
public $confirm_to = '';
public $sender = '';
public $subj = '';
public $body = '';
public $body_alt = '';
public $host = '';
public $msg_id = '';
private $to = array();
private $cc = array();
private $bcc = array();
private $replyto = array();
private $up = array();
private $msg_type = '';
private $boundary = array();
private $err_count = 0;
###
### setup
###
public function __construct($no, $from, $to, $replyto='',$adminEmail=false){
$cformsSettings = get_option('cforms_settings');
$this->eolH = ($cformsSettings['global']['cforms_crlf'][h]!=1)?"\r\n":"\n";
$this->eol = ($cformsSettings['global']['cforms_crlf'][b]!=1)?"\r\n":"\n";
if( (int)$cformsSettings['form'.$no]['cforms'.$no.'_emailpriority'] > 0 )
$this->priority = (int)$cformsSettings['form'.$no]['cforms'.$no.'_emailpriority'];
$this->html_show = ( substr($cformsSettings['form'.$no]['cforms'.$no.'_formdata'],2,1)=='1' )?true:false;
$this->html_show_ac = ( substr($cformsSettings['form'.$no]['cforms'.$no.'_formdata'],3,1)=='1' )?true:false;
$this->f_txt = ( substr($cformsSettings['form'.$no]['cforms'.$no.'_formdata'],0,1)=='1' )?true:false;
$this->f_html = ( substr($cformsSettings['form'.$no]['cforms'.$no.'_formdata'],1,1)=='1' )?true:false;
$this->to = array();
$this->cc = array();
$this->bcc = array();
$this->replyto = array();
$this->up = array();
### from
if ( $from=='' )
$from = '"'.get_option('blogname').'" <wordpress@' . preg_replace('#^www\.#', '', strtolower($_SERVER['SERVER_NAME'])) . '>';
$this->frommail = $from;
$fe=array();
$f=array();
if( preg_match('/([\w-\+\.]+@([\w-]+\.)+[\w-]{2,4})/',$from,$fe) )
$this->from = $fe[0];
if( preg_match('/(.*)\s+(([\w-\.]+@|<)).*/',$from,$f) )
$this->fname = str_replace('"','',$f[1]);
else
$this->fname = $fe[0];
### reply-to
$te=array();
$t=array();
if( preg_match('/([\w-\+\.]+@([\w-]+\.)+[\w-]{2,4})/',$replyto,$te) ) {
if ( preg_match('/(.*)\s+(([\w-\+\.]+@|<)).*/',$replyto,$t) )
$this->add_reply($te[0] ,str_replace('"','',$t[1]) );
else
$this->add_reply($te[0]);
}
### TAF
if ( substr($cformsSettings['form'.$no]['cforms'.$no.'_tellafriend'],0,1) == 1 && $cformsSettings['form'.$no]['cforms'.$no.'_tafCC']=='1' && !$adminEmail )
$this->add_cc($te[0],str_replace('"','',$t[1]));
### bcc
$te=array();
$t=array();
$addresses = explode(',',stripslashes($cformsSettings['form'.$no]['cforms'.$no.'_bcc']) );
foreach( $addresses as $a ){
if( preg_match('/([\w-+\.]+@([\w-]+\.)+[\w-]{2,4})/',$a,$te) && $adminEmail) {
if ( preg_match('/(.*)\s+(([\w-+\.]+@|<)).*/',$a,$t) )
$this->add_bcc($te[0] ,str_replace('"','',$t[1]) );
else
$this->add_bcc($te[0]);
}
}
### to
$te=array();
$t=array();
$addresses = explode(',',$to);
foreach( $addresses as $a ){
if( preg_match('/([\w-+\.]+@([\w-]+\.)+[\w-]{2,4})/',$a,$te) ) {
if ( preg_match('/(.*)\s+(([\w-+\.]+@|<)).*/',$a,$t) )
$this->add_addr($te[0] ,str_replace('"','',$t[1]) );
else
$this->add_addr($te[0]);
}
}
}
###
### General Functions
###
public function is_html($bool) {
$this->content_type = $bool?'text/html':'text/plain';
}
public function is_err() {
return ($this->err_count > 0);
}
public function has_inline_img() {
$r = false;
for($i = 0; $i < count($this->up); $i++) {
if($this->up[$i][6] == 'inline') {
$r = true;
break;
}
}
return $r;
}
###
### Header Functions
###
public function add_addr($address, $name = '') {
$t = count($this->to);
$this->to[$t][0] = trim($address);
$this->to[$t][1] = $name;
}
public function add_cc($address, $name = '') {
$t = count($this->cc);
$this->cc[$t][0] = trim($address);
$this->cc[$t][1] = $name;
}
public function add_bcc($address, $name = '') {
$t = count($this->bcc);
$this->bcc[$t][0] = trim($address);
$this->bcc[$t][1] = $name;
}
public function add_reply($address, $name = '') {
$t = count($this->replyto);
$this->replyto[$t][0] = trim($address);
$this->replyto[$t][1] = $name;
}
private function addr_add($type, $addr) {
$addr_str = $type . ': ';
$addr_str .= $this->addr_fmt($addr[0]);
if(count($addr)>1) {
for($i = 1; $i < count($addr); $i++) {
$addr_str .= ', ' . $this->addr_fmt($addr[$i]);
}
}
return $addr_str . $this->eolH;
}
private function addr_fmt($addr) {
return empty($addr[1]) ? $this->fix_header($addr[0]) : $this->enc_h($this->fix_header($addr[1]), 'phrase') . " <" . $this->fix_header($addr[0]) . ">";
}
private function fix_header($t) {
$t = trim($t);
$t = str_replace("\r", "", $t);
return str_replace("\n", "", $t);
}
private function mail_header() {
$r = $this->h_line('Date', $this->get_date());
$r .= ($this->sender == '')?$this->h_line('Return-Path', trim($this->from)):$this->h_line('Return-Path', trim($this->sender));
$u_id = md5(uniqid(time()));
$this->boundary[1] = 'b1_' . $u_id;
$this->boundary[2] = 'b2_' . $u_id;
$from = array();
$from[0][0] = trim($this->from);
$from[0][1] = $this->fname;
$r .= $this->addr_add('From', $from);
$r .= (count($this->cc) > 0) ? $this->addr_add('Cc', $this->cc):'';
$r .= (count($this->bcc) > 0) ? $this->addr_add('Bcc', $this->bcc):'';
$r .= (count($this->replyto) > 0) ? $this->addr_add('Reply-to', $this->replyto):'';
$r .= ($this->msg_id != '') ? $this->h_line('Message-ID',$this->msg_id):sprintf("Message-ID: <%s@%s>%s", $u_id, $this->server_name(), $this->eolH);
$r .= $this->h_line('X-Priority', $this->priority);
$r .= ($this->confirm_to != '') ? $this->h_line('Disposition-Notification-To', '<' . trim($this->confirm_to) . '>'):'';
$r .= $this->h_line('MIME-Version', '1.0');
### get mime
switch($this->msg_type) {
case 'plain':
$r .= $this->h_line('Content-Transfer-Encoding', $this->enc) . sprintf("Content-Type: %s; charset=\"%s\"", $this->content_type, $this->char_set);
break;
case 'attachments':
case 'alt_attachments':
if( $this->has_inline_img() )
$r .= sprintf("Content-Type: %s;%s\ttype=\"text/html\";%s\tboundary=\"%s\"%s", 'multipart/related', $this->eolH, $this->eolH, $this->boundary[1], $this->eolH);
else
$r .= $this->h_line('Content-Type', 'multipart/mixed;') . $this->t_line("\tboundary=\"" . $this->boundary[1] . '"');
break;
case 'alt':
$r .= $this->h_line('Content-Type', 'multipart/alternative;') . $this->t_line("\tboundary=\"" . $this->boundary[1] . '"');
break;
}
return $r;
}
private function h_line($n, $v) {
return $n . ': ' . $v . $this->eolH;
}
###
### Body Functions
###
private function mail_body() {
switch($this->msg_type) {
case 'plain':
$r = $this->enc_str($this->body, $this->enc);
break;
case 'alt':
$r = $this->begin_b($this->boundary[1], '', 'text/plain', '');
$r .= $this->enc_str($this->body_alt, $this->enc) . $this->eol.$this->eol;
$r .= $this->begin_b($this->boundary[1], '', 'text/html', '');
$r .= $this->enc_str($this->body, $this->enc) . $this->eol.$this->eol;
$r .= $this->end_b($this->boundary[1]);
break;
case 'attachments':
$r = $this->begin_b($this->boundary[1], '', '', '');
$r .= $this->enc_str($this->body, $this->enc) . $this->eol;
$r .= $this->attach_files();
break;
case 'alt_attachments':
$r = sprintf("--%s%s", $this->boundary[1], $this->eol);
$r .= sprintf("Content-Type: %s;%s" . "\tboundary=\"%s\"%s", 'multipart/alternative', $this->eol, $this->boundary[2], $this->eol.$this->eol);
$r .= $this->begin_b($this->boundary[2], '', 'text/plain', '') . $this->eol;
$r .= $this->enc_str($this->body_alt, $this->enc) . $this->eol.$this->eol;
$r .= $this->begin_b($this->boundary[2], '', 'text/html', '') . $this->eol;
$r .= $this->enc_str($this->body, $this->enc) . $this->eol.$this->eol;
$r .= $this->end_b($this->boundary[2]);
$r .= $this->attach_files();
break;
}
return $this->is_err() ? '' : $r;
}
private function begin_b($boundary, $char_set, $content_type, $encoding) {
if($char_set == '')
$char_set = $this->char_set;
if($content_type == '')
$content_type = $this->content_type;
if($encoding == '')
$encoding = $this->enc;
$r = $this->t_line('--' . $boundary);
$r .= sprintf("Content-Type: %s; charset = \"%s\"", $content_type, $char_set) . $this->eol;
return $r . $this->h_line('Content-Transfer-Encoding', $encoding) . $this->eol;
}
private function end_b($b) {
return $this->eol . '--' . $b . '--' . $this->eol;
}
private function t_line($v) {
return $v . $this->eol;
}
private function wrap_t($message, $length, $qp_mode = false) {
$message = $this->fix_eol($message);
if (substr($message, -1) == $this->eol)
$message = substr($message, 0, -1);
$is_qp_crlf = ($qp_mode) ? sprintf(" =%s", $this->eol) : $this->eol;
$is_utf8 = (strtolower($this->char_set) == "utf-8");
$line = explode($this->eol, $message);
$message = '';
for ($i=0 ;$i < count($line); $i++) {
$tmp_line = explode(' ', $line[$i]);
$buf = '';
for ($e = 0; $e<count($tmp_line); $e++) {
$word = $tmp_line[$e];
if ($qp_mode and (strlen($word) > $length)) {
$spc_n = $length - strlen($buf) - 1;
if ($e != 0) {
if ($spc_n > 20) {
$len = $spc_n;
if ($is_utf8) $len = $this->utf8_char_b($word, $len);
elseif (substr($word, $len - 1, 1) == "=") $len--;
elseif (substr($word, $len - 2, 1) == "=") $len -= 2;
$part = substr($word, 0, $len);
$word = substr($word, $len);
$buf .= ' ' . $part;
$message .= $buf . sprintf("=%s", $this->eol);
} else
$message .= $buf . $is_qp_crlf;
$buf = '';
}
while (strlen($word) > 0) {
$len = $length;
if ($is_utf8)
$len = $this->utf8_char_b($word, $len);
elseif (substr($word, $len - 1, 1) == "=")
$len--;
elseif (substr($word, $len - 2, 1) == "=")
$len -= 2;
$part = substr($word, 0, $len);
$word = substr($word, $len);
if (strlen($word) > 0)
$message .= $part . sprintf("=%s", $this->eol);
else
$buf = $part;
}
} else {
$buf_o = $buf;
$buf .= ($e == 0) ? $word : (' ' . $word);
if (strlen($buf) > $length and $buf_o != '') {
$message .= $buf_o . $is_qp_crlf;
$buf = $word;
}
}
}
$message .= $buf . $this->eol;
}
return $message;
}
private function utf8_char_b($t, $max_len) {
$foundSplitPos = false;
$chk_back = 3;
while (!$foundSplitPos) {
$lastChunk = substr($t, $max_len - $chk_back, $chk_back);
$enc_tCharPos = strpos($lastChunk, "=");
if ($enc_tCharPos !== false) {
$hex = substr($t, $max_len - $chk_back + $enc_tCharPos + 1, 2);
$dec = hexdec($hex);
if ($dec < 128) {
$max_len = ($enc_tCharPos == 0) ? $max_len :
$max_len - ($chk_back - $enc_tCharPos);
$foundSplitPos = true;
} elseif ($dec >= 192) {
$max_len = $max_len - ($chk_back - $enc_tCharPos);
$foundSplitPos = true;
} elseif ($dec < 192)
$chk_back += 3;
} else
$foundSplitPos = true;
}
return $max_len;
}
###
### Send Functions
###
public function send() {
$this->err_count = 0;
if((count($this->to) + count($this->cc) + count($this->bcc)) < 1) {
$this->set_err( __('You must provide at least one recipient email address.','cforms') );
return false;
}
if(!empty($this->body_alt))
$this->content_type = 'multipart/alternative';
if(count($this->up) < 1 && strlen($this->body_alt) < 1)
$this->msg_type = 'plain';
else {
if(count($this->up) > 0)
$this->msg_type = 'attachments';
if(strlen($this->body_alt) > 0 && count($this->up) < 1)
$this->msg_type = 'alt';
if(strlen($this->body_alt) > 0 && count($this->up) > 0)
$this->msg_type = 'alt_attachments';
}
$header = $this->mail_header();
$body = $this->mail_body();
### bail out
if ($body == '') return false;
$to = '';
for($i = 0; $i < count($this->to); $i++) {
$to .= (($i != 0) ? ', ':'' ) . $this->addr_fmt($this->to[$i]);
}
$to_all = explode(',', $to);
if ($this->split_to === true && count($to_all) > 1) {
foreach ($to_all as $val) {
$rt = wp_mail($val, $this->enc_h($this->fix_header($this->subj)), $body, $header);
}
} else
$rt = wp_mail($to, $this->enc_h($this->fix_header($this->subj)), $body, $header);
if(!$rt) {
$this->set_err(__('Could not instantiate wp_mail function.','cforms'));
return false;
}
return true;
}
public function add_file($path, $name = '', $encoding = 'base64', $type = 'application/octet-stream') {
if(!is_file($path)) {
$this->set_err(__('Could not access file: ','cforms'));
return false;
}
$filename = basename($path);
$name = ($name == '') ? $filename : $name;
$t = count($this->up);
$this->up[$t][0] = $path;
$this->up[$t][1] = $filename;
$this->up[$t][2] = $name;
$this->up[$t][3] = $encoding;
$this->up[$t][4] = $type;
$this->up[$t][6] = 'attachment';
$this->up[$t][7] = 0;
return true;
}
private function attach_files() {
$mime_arr = array();
for($i = 0; $i < count($this->up); $i++) {
$path = $this->up[$i][0];
$name = $this->up[$i][2];
$encoding = $this->up[$i][3];
$type = $this->up[$i][4];
$dispo = $this->up[$i][6];
$cid = $this->up[$i][7];
$mime_arr[] = sprintf("--%s%s", $this->boundary[1], $this->eol);
$mime_arr[] = sprintf("Content-Type: %s; name=\"%s\"%s", $type, $this->enc_h($this->fix_header($name)), $this->eol);
$mime_arr[] = sprintf("Content-Transfer-Encoding: %s%s", $encoding, $this->eol);
if($dispo == 'inline')
$mime_arr[] = sprintf("Content-ID: <%s>%s", $cid, $this->eol);
$mime_arr[] = sprintf("Content-Disposition: %s; filename=\"%s\"%s", $dispo, $this->enc_h($this->fix_header($name)), $this->eol.$this->eol);
$mime_arr[] = $this->enc_file($path, $encoding);
if($this->is_err()) return '';
$mime_arr[] = $this->eol.$this->eol;
}
$mime_arr[] = sprintf("--%s--%s", $this->boundary[1], $this->eol);
return join('', $mime_arr);
}
private function enc_file ($path, $encoding = 'base64') {
if(!$fd = fopen($path, 'rb')) {
$this->set_err(__('File Error: Could not open file: ','cforms'));
return '';
}
if (version_compare(PHP_VERSION, '5.4', '<')) {
$magic_q = get_magic_quotes_runtime();
set_magic_quotes_runtime(0);
}
$buffer = file_get_contents($path);
$buffer = $this->enc_str($buffer, $encoding);
fclose($fd);
if (version_compare(PHP_VERSION, '5.4', '<')) { set_magic_quotes_runtime($magic_q); }
return $buffer;
}
private function enc_str ($str, $e = 'base64') {
$enc_t = '';
switch(strtolower($e)) {
case 'base64': $enc_t = chunk_split(base64_encode($str), 76, $this->eol); break;
case '7bit':
case '8bit': $enc_t = $this->fix_eol($str) . ((substr($enc_t, -(strlen($this->eol))) != $this->eol) ? $this->eol : ''); break;
case 'binary': $enc_t = $str; break;
case 'quoted-printable': $enc_t = $this->enc_qp($str); break;
default: $this->set_err(__('Unknown encoding: ','cforms')); break;
}
return $enc_t;
}
private function enc_h ($str, $position = 'text') {
$x = 0;
switch (strtolower($position)) {
case 'phrase':
if (!preg_match('/[\200-\377]/', $str)) {
$enc_t = addcslashes($str, "\0..\37\177\\\"");
return (($str == $enc_t) && !preg_match('/[^A-Za-z0-9!#$%&\'*+\/=?^_`{|}~ -]/', $str)) ? $enc_t :"\"$enc_t\"";
}
$x = preg_match_all('/[^\040\041\043-\133\135-\176]/', $str, $matches);
break;
case 'comment':
$x = preg_match_all('/[()"]/', $str, $matches);
case 'text':
default:
$x += preg_match_all('/[\000-\010\013\014\016-\037\177-\377]/', $str, $matches);
break;
}
if ($x == 0)
return ($str);
$maxlen = 75 - 7 - strlen($this->char_set);
if (strlen($str)/3 < $x) {
$encoding = 'B';
if (function_exists('mb_strlen') && (strlen($str) > mb_strlen($str, $this->char_set)) )
$enc_t = $this->enc_special($str);
else {
$enc_t = base64_encode($str);
$maxlen -= $maxlen % 4;
$enc_t = trim(chunk_split($enc_t, $maxlen, "\n"));
}
} else {
$encoding = 'Q';
$enc_t = $this->enc_q($str, $position);
$enc_t = $this->wrap_t($enc_t, $maxlen, true);
$enc_t = str_replace('='.$this->eol, "\n", trim($enc_t));
}
$enc_t = preg_replace('/^(.*)$/m', " =?".$this->char_set."?$encoding?\\1?=", $enc_t);
return trim(str_replace("\n", $this->eol, $enc_t));
}
private function enc_special($str) {
$start = "=?".$this->char_set."?B?";
$end = "?=";
$enc_t = "";
$mb_length = mb_strlen($str, $this->char_set);
$length = 75 - strlen($start) - strlen($end);
$ratio = $mb_length / strlen($str);
$offset = $avgLength = floor($length * $ratio * .75);
for ($i = 0; $i < $mb_length; $i += $offset) {
$chk_back = 0;
do {
$offset = $avgLength - $chk_back;
$rest = mb_substr($str, $i, $offset, $this->char_set);
$rest = base64_encode($rest);
$chk_back++;
}
while (strlen($rest) > $length);
$enc_t .= $rest . $this->eol;
}
return substr($enc_t, 0, -strlen($this->eol));
}
private function enc_qp( $input = '', $line_max = 76, $space_conv = false ) {
$hex = array('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F');
$lines = preg_split('/(?:\r\n|\r|\n)/', $input);
$escape = '=';
$output = '';
while( list(, $line) = each($lines) ) {
$l_len = strlen($line);
$newline = '';
for($i = 0; $i < $l_len; $i++) {
$c = substr( $line, $i, 1 );
$dec = ord( $c );
if ( ( $i == 0 ) && ( $dec == 46 ) ) $c = '=2E';
if ( $dec == 32 ) {
if ( $i == ( $l_len - 1 ) ) $c = '=20';
else if ( $space_conv ) $c = '=20';
} elseif ( ($dec == 61) || ($dec < 32 ) || ($dec > 126) ) {
$h2 = floor($dec/16);
$h1 = floor($dec%16);
$c = $escape.$hex[$h2].$hex[$h1];
}
if ( (strlen($newline) + strlen($c)) >= $line_max ) {
$output .= $newline.$escape.$this->eol;
$newline = '';
if ( $dec == 46 ) $c = '=2E';
}
$newline .= $c;
}
$output .= $newline.$this->eol;
}
return trim($output);
}
private function enc_q ($str, $position = 'text') {
$enc_t = preg_replace("[\r\n]", '', $str);
switch (strtolower($position)) {
case 'phrase': $enc_t = preg_replace("/([^A-Za-z0-9!*+\/ -])/e", "'='.sprintf('%02X', ord('\\1'))", $enc_t); break;
case 'comment': $enc_t = preg_replace("/([\(\)\"])/e", "'='.sprintf('%02X', ord('\\1'))", $enc_t);
case 'text':
default: $enc_t = preg_replace('/([\000-\011\013\014\016-\037\075\077\137\177-\377])/e', "'='.sprintf('%02X', ord('\\1'))", $enc_t); break;
}
return str_replace(' ', '_', $enc_t);
}
private function set_err($m) {
$this->err = $m;
$this->err_count++;
}
private static function get_date() {
$d = date('Z');
$ds = ($d < 0) ? '-' : '+';
$d = abs($d);
$d = (int)($d/3600)*100 + ($d%3600)/60;
$r = sprintf("%s %s%04d", date('D, j M Y H:i:s'), $ds, $d);
return $r;
}
private function server_name() {
if (!empty($this->host)) return $this->host;
elseif (isset($_SERVER['SERVER_NAME'])) return $_SERVER['SERVER_NAME'];
else return "localhost.localdomain";
}
private function fix_eol($s) {
$s = str_replace("\r\n", "\n", $s);
$s = str_replace("\r", "\n", $s);
$s = str_replace("\n", $this->eol, $s);
return $s;
}
}