From 92d8eb2acf7204d01f595081551a4b08c4660cf3 Mon Sep 17 00:00:00 2001 From: Robert Angyal Date: Sun, 17 Apr 2016 06:48:22 +0200 Subject: Fixes #4583 by separating attachments to related and mixed multiparts Signed-off-by: Robert Angyal --- system/libraries/Email.php | 135 +++++++++++++++++++++++++++++++++------------ 1 file changed, 101 insertions(+), 34 deletions(-) (limited to 'system/libraries') diff --git a/system/libraries/Email.php b/system/libraries/Email.php index ed6f737a1..ef9b58b61 100644 --- a/system/libraries/Email.php +++ b/system/libraries/Email.php @@ -149,13 +149,6 @@ class CI_Email { */ public $charset = 'utf-8'; - /** - * Multipart message - * - * @var string 'mixed' (in the body) or 'related' (separate) - */ - public $multipart = 'mixed'; // "mixed" (in the body) or "related" (separate) - /** * Alternative message (for HTML messages only) * @@ -274,6 +267,13 @@ class CI_Email { */ protected $_atc_boundary = ''; + /** + * Related Attachment boundary + * + * @var string + */ + protected $_rel_boundary = ''; + /** * Final headers to send * @@ -766,7 +766,8 @@ class CI_Email { 'name' => array($file, $newname), 'disposition' => empty($disposition) ? 'attachment' : $disposition, // Can also be 'inline' Not sure if it matters 'type' => $mime, - 'content' => chunk_split(base64_encode($file_content)) + 'content' => chunk_split(base64_encode($file_content)), + 'multipart' => 'mixed' ); return $this; @@ -784,15 +785,11 @@ class CI_Email { */ public function attachment_cid($filename) { - if ($this->multipart !== 'related') - { - $this->multipart = 'related'; // Thunderbird need this for inline images - } - for ($i = 0, $c = count($this->_attachments); $i < $c; $i++) { if ($this->_attachments[$i]['name'][0] === $filename) { + $this->_attachments[$i]['multipart'] = 'related'; $this->_attachments[$i]['cid'] = uniqid(basename($this->_attachments[$i]['name'][0]).'@'); return $this->_attachments[$i]['cid']; } @@ -945,6 +942,7 @@ class CI_Email { { $this->_alt_boundary = 'B_ALT_'.uniqid(''); // multipart/alternative $this->_atc_boundary = 'B_ATC_'.uniqid(''); // attachment boundary + $this->_rel_boundary = 'B_REL_'.uniqid(''); // related attachment boundary } // -------------------------------------------------------------------- @@ -1391,7 +1389,7 @@ class CI_Email { case 'plain-attach' : - $hdr .= 'Content-Type: multipart/'.$this->multipart.'; boundary="'.$this->_atc_boundary.'"'; + $hdr .= 'Content-Type: multipart/mixed; boundary="'.$this->_atc_boundary.'"'; if ($this->_get_protocol() === 'mail') { @@ -1406,18 +1404,45 @@ class CI_Email { .$this->newline .$this->_body.$this->newline.$this->newline; + $attachment_prepared = $this->_prep_attachments($this->_attachments, $this->_atc_boundary); + break; case 'html-attach' : - $hdr .= 'Content-Type: multipart/'.$this->multipart.'; boundary="'.$this->_atc_boundary.'"'; + $attachments_indexed_by_multipart = $this->_attachments_indexed_by_multipart(); + $attachments_related = $attachments_indexed_by_multipart['related']; + $attachments_mixed = $attachments_indexed_by_multipart['mixed']; + $prepared_attachment_parts = array(); + + if (isset($attachments_mixed) && count($attachments_mixed) > 0) + { + $hdr .= 'Content-Type: multipart/mixed; boundary="'.$this->_atc_boundary.'"'; + + array_push($prepared_attachment_parts, $this->_prep_attachments($attachments_mixed, $this->_atc_boundary)); + $last_boundary = $this->_atc_boundary; + } + + if (isset($attachments_related) && count($attachments_related) > 0) + { + $target_container =& $hdr; + if (isset($last_boundary)) { + $target_container =& $body; + $target_container .= '--' . $last_boundary . $this->newline; + } + $target_container .= 'Content-Type: multipart/related; boundary="'.$this->_rel_boundary.'"'; + + array_unshift($prepared_attachment_parts, $this->_prep_attachments($attachments_related, $this->_rel_boundary)); + $last_boundary = $this->_rel_boundary; + } if ($this->_get_protocol() === 'mail') { $this->_header_str .= $hdr; } + if (strlen(body) > 0) $body .= $this->newline.$this->newline; $body .= $this->_get_mime_message().$this->newline.$this->newline - .'--'.$this->_atc_boundary.$this->newline + .'--'.$last_boundary.$this->newline .'Content-Type: multipart/alternative; boundary="'.$this->_alt_boundary.'"'.$this->newline.$this->newline .'--'.$this->_alt_boundary.$this->newline @@ -1432,27 +1457,12 @@ class CI_Email { .$this->_prep_quoted_printable($this->_body).$this->newline.$this->newline .'--'.$this->_alt_boundary.'--'.$this->newline.$this->newline; - break; - } - - $attachment = array(); - for ($i = 0, $c = count($this->_attachments), $z = 0; $i < $c; $i++) - { - $filename = $this->_attachments[$i]['name'][0]; - $basename = ($this->_attachments[$i]['name'][1] === NULL) - ? basename($filename) : $this->_attachments[$i]['name'][1]; - - $attachment[$z++] = '--'.$this->_atc_boundary.$this->newline - .'Content-type: '.$this->_attachments[$i]['type'].'; ' - .'name="'.$basename.'"'.$this->newline - .'Content-Disposition: '.$this->_attachments[$i]['disposition'].';'.$this->newline - .'Content-Transfer-Encoding: base64'.$this->newline - .(empty($this->_attachments[$i]['cid']) ? '' : 'Content-ID: <'.$this->_attachments[$i]['cid'].'>'.$this->newline); + $attachment_prepared = implode($this->newline.$this->newline, $prepared_attachment_parts); - $attachment[$z++] = $this->_attachments[$i]['content']; + break; } - $body .= implode($this->newline, $attachment).$this->newline.'--'.$this->_atc_boundary.'--'; + $body .= $attachment_prepared; $this->_finalbody = ($this->_get_protocol() === 'mail') ? $body : $hdr.$this->newline.$this->newline.$body; @@ -1462,6 +1472,63 @@ class CI_Email { // -------------------------------------------------------------------- + /** + * Returns attachments mapped by multipart type + * + * @return array + */ + protected function _attachments_indexed_by_multipart() + { + foreach ($this->_attachments as $attachment) + { + $multipart = $attachment['multipart']; + if (!isset($attachments_indexed[$multipart])) + { + $attachments_indexed[$multipart] = array(); + } + array_push($attachments_indexed[$multipart], $attachment); + } + + return $attachments_indexed; + } + + // -------------------------------------------------------------------- + + /** + * Prepares attachment string + * + * @param array $attachments + * @param string $boundary Multipart boundary string + * @return string + */ + protected function _prep_attachments($attachments, $boundary) + { + if (!isset($attachments) || count($attachments) === 0) return ''; + + $attachment_parts = array(); + foreach ($attachments as $attachment) + { + $filename = $attachment['name'][0]; + $basename = ($attachment['name'][1] === NULL) + ? basename($filename) : $attachment['name'][1]; + + array_push( + $attachment_parts, + '--'.$boundary.$this->newline + .'Content-type: '.$attachment['type'].'; ' + .'name="'.$basename.'"'.$this->newline + .'Content-Disposition: '.$attachment['disposition'].';'.$this->newline + .'Content-Transfer-Encoding: base64'.$this->newline + .(empty($attachment['cid']) ? '' : 'Content-ID: <'.$attachment['cid'].'>'.$this->newline), + $attachment['content'] + ); + } + + return implode($this->newline, $attachment_parts).$this->newline.'--'.$boundary.'--'; + } + + // -------------------------------------------------------------------- + /** * Prep Quoted Printable * -- cgit v1.2.3-24-g4f1b