| 1 |
<?php |
| 2 |
defined('ABSPATH') || die('Restricted Access'); |
| 3 |
|
| 4 |
use AcyMailing\Helpers\UpdatemeHelper; |
| 5 |
|
| 6 |
/** |
| 7 |
* To secure text echoed in HTML attributes |
| 8 |
*/ |
| 9 |
function acym_escape(string $text): string |
| 10 |
{ |
| 11 |
if (empty($text) && !is_numeric($text)) { |
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return ''; |
| 13 |
} |
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|
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if (!preg_match('#[&<>"\']#', $text)) { |
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return $text; |
| 17 |
} |
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|
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return htmlspecialchars($text, ENT_QUOTES, 'UTF-8'); |
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} |
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|
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/** |
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* To secure text echoed in HTML content |
| 24 |
*/ |
| 25 |
function acym_escapeHtml(string $text): string |
| 26 |
{ |
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return esc_attr($text); |
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} |
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|
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/** |
| 31 |
* To secure text echoed in HTML content, and whitelisting some HTML tags |
| 32 |
* $allowedHtmlTags: |
| 33 |
* [ |
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* 'a' => [ |
| 35 |
* 'href' => true |
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* ], |
| 37 |
* 'br' => [] |
| 38 |
* ] |
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*/ |
| 40 |
function acym_escapeHtmlWithAllowedTags(string $text, array $allowedHtmlTags = []): string |
| 41 |
{ |
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// Attributes whose value is an URL and must therefore not carry a dangerous scheme. |
| 43 |
$urlAttributes = ['href', 'src', 'xlink:href', 'action', 'formaction']; |
| 44 |
|
| 45 |
return preg_replace_callback( |
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'#<\s*(/?)\s*([a-z][a-z0-9]*)\b([^>]*?)(/?)\s*>#i', |
| 47 |
static function (array $m) use ($allowedHtmlTags, $urlAttributes): string { |
| 48 |
[, $closing, $tag, $attrString, $selfClosing] = $m; |
| 49 |
$tag = strtolower($tag); |
| 50 |
|
| 51 |
if (!array_key_exists($tag, $allowedHtmlTags)) { |
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return ''; |
| 53 |
} |
| 54 |
|
| 55 |
if ($closing === '/') { |
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return '</'.$tag.'>'; |
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} |
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|
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$keptAttrs = ''; |
| 60 |
if ( |
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!empty($allowedHtmlTags[$tag]) |
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&& preg_match_all( |
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'#([a-z][a-z0-9:_-]*)\s*(?:=\s*("[^"]*"|\'[^\']*\'|[^\s>]+))?#i', |
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$attrString, |
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$attrMatches, |
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PREG_SET_ORDER |
| 67 |
) |
| 68 |
) { |
| 69 |
foreach ($attrMatches as $attr) { |
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$name = strtolower($attr[1]); |
| 71 |
if (empty($allowedHtmlTags[$tag][$name])) { |
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continue; |
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} |
| 74 |
|
| 75 |
$value = isset($attr[2]) ? $attr[2] : ''; |
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|
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// Drop URL attributes whose value uses a dangerous scheme. |
| 78 |
if ($value !== '' && in_array($name, $urlAttributes, true)) { |
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// Normalize (unquote, decode entities, remove whitespace/control chars |
| 80 |
// that could hide the scheme) only to run the check. |
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$normalized = strtolower( |
| 82 |
preg_replace('/[\s\x00-\x20]+/', '', html_entity_decode(trim($value, '"\''), ENT_QUOTES)) |
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); |
| 84 |
if (preg_match('#^(?:javascript|data|vbscript):#', $normalized)) { |
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continue; |
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} |
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} |
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|
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$keptAttrs .= $value !== '' ? " {$name}={$value}" : " {$name}"; |
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} |
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} |
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|
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$selfClose = $selfClosing === '/' ? ' /' : ''; |
| 94 |
|
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return '<'.$tag.$keptAttrs.$selfClose.'>'; |
| 96 |
}, |
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$text |
| 98 |
); |
| 99 |
} |
| 100 |
|
| 101 |
/** |
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* To secure URLs echoed in HTML attributes |
| 103 |
*/ |
| 104 |
function acym_escapeUrl(?string $url): string |
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{ |
| 106 |
if (empty($url)) { |
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return ''; |
| 108 |
} |
| 109 |
|
| 110 |
$url = str_replace(' ', '%20', ltrim($url)); |
| 111 |
$url = preg_replace('|[^a-z0-9-~+_.?#=!&;,/:%@$\|*\'()\[\]\\x80-\\xff]|i', '', $url); |
| 112 |
|
| 113 |
if (empty($url)) { |
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return ''; |
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} |
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|
| 117 |
if (0 !== stripos($url, 'mailto:')) { |
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$strip = ['%0d', '%0a', '%0D', '%0A']; |
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$count = 1; |
| 120 |
while ($count) { |
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$url = str_replace($strip, '', $url, $count); |
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} |
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} |
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|
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$url = str_replace(';//', '://', $url); |
| 126 |
if (strpos($url, ':') === false && !in_array($url[0], ['/', '#', '?'], true) && !preg_match('/^[a-z0-9-]+?\.php/i', $url)) { |
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$url = 'https://'.$url; |
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} |
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|
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$url = str_replace('&', '&', $url); |
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$url = str_replace("'", ''', $url); |
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|
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if (strpos($url, '[') !== false || strpos($url, ']') !== false) { |
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$to_unset = []; |
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|
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if (strpos($url, '//') === 0) { |
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$to_unset[] = 'scheme'; |
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$url = 'placeholder:'.$url; |
| 139 |
} elseif (strpos($url, '/') === 0) { |
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$to_unset[] = 'scheme'; |
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$to_unset[] = 'host'; |
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$url = 'placeholder://placeholder'.$url; |
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} |
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|
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$parsed = acym_parseUrl($url); |
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|
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if (!empty($parsed)) { |
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foreach ($to_unset as $key) { |
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unset($parsed[$key]); |
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} |
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} |
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|
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$front = ''; |
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|
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if (isset($parsed['scheme'])) { |
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$front .= $parsed['scheme'].'://'; |
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} elseif ('/' === $url[0]) { |
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$front .= '//'; |
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} |
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|
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if (isset($parsed['user'])) { |
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$front .= $parsed['user']; |
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} |
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|
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if (isset($parsed['pass'])) { |
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$front .= ':'.$parsed['pass']; |
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} |
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|
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if (isset($parsed['user']) || isset($parsed['pass'])) { |
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$front .= '@'; |
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} |
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|
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if (isset($parsed['host'])) { |
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$front .= $parsed['host']; |
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} |
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|
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if (isset($parsed['port'])) { |
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$front .= ':'.$parsed['port']; |
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} |
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|
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$end_dirty = str_replace($front, '', $url); |
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$end_clean = str_replace(['[', ']'], ['%5B', '%5D'], $end_dirty); |
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$url = str_replace($end_dirty, $end_clean, $url); |
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} |
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|
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return $url; |
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} |
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|
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function acym_arrayToInteger(array &$array): void |
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{ |
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$array = @array_map('intval', $array); |
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} |
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|
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function acym_getIP(bool $full = false): string |
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{ |
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$config = acym_config(); |
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$ipCollection = $config->get('ip_collection', 'yes'); |
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|
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if (!$full && $ipCollection === 'no') { |
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return ''; |
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} |
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|
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$map = [ |
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'HTTP_X_FORWARDED_IP', |
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'X_FORWARDED_FOR', |
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'HTTP_X_FORWARDED_FOR', |
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'HTTP_CLIENT_IP', |
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'HTTP_X_FORWARDED', |
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'HTTP_FORWARDED_FOR', |
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'HTTP_FORWARDED', |
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'REMOTE_ADDR', |
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]; |
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|
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$ipAddress = ''; |
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foreach ($map as $oneAttribute) { |
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$serverValue = acym_getVar('string', $oneAttribute, '', 'SERVER'); |
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if (empty($serverValue) || strlen($serverValue) < 7) { |
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continue; |
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} |
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|
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$ipAddress = $serverValue; |
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break; |
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} |
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|
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// Load balancers and CDNs may put multiple IPs comma separated |
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if (strstr($ipAddress, ',') !== false) { |
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$addresses = explode(',', $ipAddress); |
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$ipAddress = trim(end($addresses)); |
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} |
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|
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// We strip tags here as the ip could be modified by something |
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$ipAddress = acym_stripTags($ipAddress); |
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|
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if ($full || $ipCollection === 'yes') { |
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return $ipAddress; |
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} |
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|
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return acym_anonymizeIP($ipAddress); |
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} |
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|
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function acym_anonymizeIP(string $ipAddress): string |
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{ |
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if (empty($ipAddress)) { |
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return ''; |
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} |
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|
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// IPv6 |
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if (strpos($ipAddress, ':') !== false) { |
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$packed = inet_pton($ipAddress); |
| 250 |
if ($packed === false) { |
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return ''; |
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} |
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|
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$anonymized = substr($packed, 0, 8).str_repeat("\x00", 8); |
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|
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return inet_ntop($anonymized); |
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} |
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|
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// IPv4 |
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$parts = explode('.', $ipAddress); |
| 261 |
if (count($parts) !== 4) { |
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return ''; |
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} |
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|
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$parts[3] = '0'; |
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|
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return implode('.', $parts); |
| 268 |
} |
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|
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function acym_generateKey(int $length): string |
| 271 |
{ |
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$charactersPool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; |
| 273 |
$randomString = ''; |
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$max = strlen($charactersPool) - 1; |
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for ($i = 0; $i < $length; $i++) { |
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$randomString .= $charactersPool[acym_rand(0, $max)]; |
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} |
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|
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return $randomString; |
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} |
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|
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function acym_isRobot(): bool |
| 283 |
{ |
| 284 |
if (empty($_SERVER)) { |
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return false; |
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} |
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|
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// Real calls are made using GET |
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$requestMethod = acym_getVar('string', 'REQUEST_METHOD', '', 'SERVER'); |
| 290 |
if (!empty($requestMethod) && $requestMethod === 'HEAD') { |
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return true; |
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} |
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|
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// SpamBayes checks the images in the sent emails, so the stats image too... Don't count it as opened! |
| 295 |
$userAgent = acym_getVar('string', 'HTTP_USER_AGENT', '', 'SERVER'); |
| 296 |
if (!empty($userAgent) && strpos(strtolower($userAgent), 'spambayes') !== false) { |
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return true; |
| 298 |
} |
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|
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// Avoid auto-confirming by the Barracuda firewall installed on some mail clients |
| 301 |
$remoteIp = acym_getVar('string', 'REMOTE_ADDR', '', 'SERVER'); |
| 302 |
if (!empty($remoteIp) && version_compare($remoteIp, '64.235.144.0', '>=') && version_compare($remoteIp, '64.235.159.255', '<=')) { |
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return true; |
| 304 |
} |
| 305 |
|
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return false; |
| 307 |
} |
| 308 |
|
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function acym_displayErrors(): void |
| 310 |
{ |
| 311 |
// phpcs:ignore WordPress.PHP.DevelopmentFunctions.prevent_path_disclosure_error_reporting -- intended error printing on export and debug mode. |
| 312 |
error_reporting(E_ALL); |
| 313 |
// phpcs:ignore Squiz.PHP.DiscouragedFunctions.Discouraged -- Error display is toggled intentionally for debugging purposes. |
| 314 |
@ini_set('display_errors', 1); |
| 315 |
} |
| 316 |
|
| 317 |
function acym_checkRobots(): void |
| 318 |
{ |
| 319 |
$userAgent = acym_getVar('string', 'HTTP_USER_AGENT', null, 'SERVER'); |
| 320 |
if (!empty($userAgent) && preg_match('#(libwww-perl|python|googlebot)#i', $userAgent)) { |
| 321 |
die('Not allowed for robots. Please contact us if you are not a robot'); |
| 322 |
} |
| 323 |
} |
| 324 |
|
| 325 |
function acym_noCache(): void |
| 326 |
{ |
| 327 |
acym_header('Cache-Control: no-store, no-cache, must-revalidate'); |
| 328 |
acym_header('Cache-Control: post-check=0, pre-check=0', false); |
| 329 |
acym_header('Pragma: no-cache'); |
| 330 |
acym_header('Expires: Wed, 17 Sep 1975 21:32:10 GMT'); |
| 331 |
} |
| 332 |
|
| 333 |
function acym_conditionsContainRestrictedFilter($data): bool |
| 334 |
{ |
| 335 |
if (!is_array($data)) { |
| 336 |
return false; |
| 337 |
} |
| 338 |
|
| 339 |
foreach ($data as $key => $value) { |
| 340 |
if ($key === 'sqladvanced' && is_array($value) && (!empty($value['query']) || !empty($value['conn_host']))) { |
| 341 |
return true; |
| 342 |
} |
| 343 |
if (is_array($value) && acym_conditionsContainRestrictedFilter($value)) { |
| 344 |
return true; |
| 345 |
} |
| 346 |
} |
| 347 |
|
| 348 |
return false; |
| 349 |
} |
| 350 |
|
| 351 |
function acym_blockRestrictedFilterAjax($conditions): void |
| 352 |
{ |
| 353 |
if (acym_conditionsContainRestrictedFilter($conditions) && !acym_hasAdminPermissions()) { |
| 354 |
acym_sendAjaxResponse(acym_translation('ACYM_ACCESS_DENIED'), [], false); |
| 355 |
} |
| 356 |
} |
| 357 |
|
| 358 |
function acym_isAllowed(string $controller, string $task = ''): bool |
| 359 |
{ |
| 360 |
if ($controller === 'dashboard') { |
| 361 |
// Promotional pages and the home page hold no sensitive data, but they stay reserved to the back-end users |
| 362 |
if (in_array($task, ['acychecker', 'features', 'listing', 'upgrade'])) { |
| 363 |
return acym_hasBackofficeAccess(); |
| 364 |
} |
| 365 |
|
| 366 |
return acym_isAllowed('configuration'); |
| 367 |
} |
| 368 |
|
| 369 |
$controller = str_replace('front', '', $controller); |
| 370 |
|
| 371 |
$config = acym_config(); |
| 372 |
$globalAccess = $config->get('acl_'.$controller, ACYM_ADMIN_GROUP); |
| 373 |
if ($globalAccess === 'all') { |
| 374 |
return true; |
| 375 |
} |
| 376 |
|
| 377 |
$globalAccess = explode(',', $globalAccess); |
| 378 |
$globalAccess[] = ACYM_ADMIN_GROUP; |
| 379 |
|
| 380 |
$userId = acym_currentUserId(); |
| 381 |
if (empty($userId)) { |
| 382 |
return false; |
| 383 |
} |
| 384 |
|
| 385 |
$userGroups = acym_getGroupsByUser($userId); |
| 386 |
if (empty($userGroups)) { |
| 387 |
return false; |
| 388 |
} |
| 389 |
|
| 390 |
foreach ($userGroups as $oneGroup) { |
| 391 |
if (in_array($oneGroup, $globalAccess)) { |
| 392 |
return true; |
| 393 |
} |
| 394 |
} |
| 395 |
|
| 396 |
// Having access to campaigns gives access to some email actions |
| 397 |
if ($controller === 'mails' && in_array($task, ['autoSave', 'getTemplateAjax']) && acym_isAllowed('campaigns')) { |
| 398 |
return true; |
| 399 |
} |
| 400 |
|
| 401 |
// The language management is made in the configuration |
| 402 |
if ($controller === 'language' && acym_isAllowed('configuration')) { |
| 403 |
return true; |
| 404 |
} |
| 405 |
|
| 406 |
// When editing a campaign or a template, the user might need attachments |
| 407 |
if ($controller === 'file' && (acym_isAllowed('campaigns') || acym_isAllowed('mails'))) { |
| 408 |
return true; |
| 409 |
} |
| 410 |
|
| 411 |
// When editing a campaign, one can need to get a segment's number of affected users from the segment step |
| 412 |
if (in_array($task, ['countResultsTotal', 'countGlobalBySegmentId', 'countResults']) && acym_isAllowed('campaigns')) { |
| 413 |
return true; |
| 414 |
} |
| 415 |
|
| 416 |
// When editing an email, lists might be loaded with ajax |
| 417 |
if ($controller === 'lists' && $task === 'setAjaxListing' && (acym_isAllowed('campaigns') || acym_isAllowed('mails'))) { |
| 418 |
return true; |
| 419 |
} |
| 420 |
|
| 421 |
// The zones are used in the editor |
| 422 |
if ( |
| 423 |
$controller === 'zones' |
| 424 |
&& ( |
| 425 |
acym_isAllowed('campaigns') |
| 426 |
|| acym_isAllowed('mails') |
| 427 |
) |
| 428 |
) { |
| 429 |
return true; |
| 430 |
} |
| 431 |
|
| 432 |
// Togglable icons are located in most features |
| 433 |
if ( |
| 434 |
$controller === 'toggle' |
| 435 |
&& ( |
| 436 |
acym_isAllowed('campaigns') |
| 437 |
|| acym_isAllowed('mails') |
| 438 |
|| acym_isAllowed('automation') |
| 439 |
|| acym_isAllowed('segments') |
| 440 |
|| acym_isAllowed('scenarios') |
| 441 |
|| acym_isAllowed('forms') |
| 442 |
|| acym_isAllowed('users') |
| 443 |
|| acym_isAllowed('lists') |
| 444 |
|| acym_isAllowed('fields') |
| 445 |
|| acym_isAllowed('bounces') |
| 446 |
) |
| 447 |
) { |
| 448 |
return true; |
| 449 |
} |
| 450 |
|
| 451 |
// The add-ons are used in the editor and the filters |
| 452 |
if ( |
| 453 |
$controller === 'dynamics' |
| 454 |
&& ( |
| 455 |
acym_isAllowed('campaigns') |
| 456 |
|| acym_isAllowed('mails') |
| 457 |
|| acym_isAllowed('automation') |
| 458 |
|| acym_isAllowed('segments') |
| 459 |
|| acym_isAllowed('scenarios') |
| 460 |
) |
| 461 |
) { |
| 462 |
return true; |
| 463 |
} |
| 464 |
|
| 465 |
// The entity select is used in multiple features |
| 466 |
if ( |
| 467 |
$task === 'loadEntityFront' |
| 468 |
&& ( |
| 469 |
acym_isAllowed('campaigns') |
| 470 |
|| acym_isAllowed('mails') |
| 471 |
|| acym_isAllowed('users') |
| 472 |
|| acym_isAllowed('lists') |
| 473 |
) |
| 474 |
) { |
| 475 |
return true; |
| 476 |
} |
| 477 |
|
| 478 |
return false; |
| 479 |
} |
| 480 |
|
| 481 |
function acym_raiseError(int $code, string $message): void |
| 482 |
{ |
| 483 |
// phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet -- Ending script here, no hook available. |
| 484 |
echo '<link type="text/css" rel="stylesheet" href="'.esc_url(ACYM_CSS.'back_global.min.css?v='.filemtime(ACYM_MEDIA.'css'.DS.'back_global.min.css')).'">'; |
| 485 |
echo '<div id="acym_wrapper">'; |
| 486 |
acym_display('Error '.$code.': '.$message, 'error', false); |
| 487 |
echo '</div>'; |
| 488 |
http_response_code($code); |
| 489 |
exit; |
| 490 |
} |
| 491 |
|
| 492 |
/** |
| 493 |
* Check if the license is valid, make this check weekly |
| 494 |
*/ |
| 495 |
function acym_isLicenseValidWeekly(): bool |
| 496 |
{ |
| 497 |
$config = acym_config(); |
| 498 |
$expirationDate = $config->get('expirationdate', 0); |
| 499 |
// $expirationDate is empty when no call has been made yet on our server, or when it is a Starter license. Starter licenses don't have access to the cron |
| 500 |
if (empty($expirationDate) || (time() - 604800) > $config->get('lastlicensecheck', 0)) { |
| 501 |
UpdatemeHelper::getLicenseInfo(); |
| 502 |
$config = acym_config(true); |
| 503 |
$expirationDate = $config->get('expirationdate', 0); |
| 504 |
} |
| 505 |
|
| 506 |
return $expirationDate >= time(); |
| 507 |
} |
| 508 |
|
| 509 |
/** |
| 510 |
* Generate a time-limited autologin token for a subscriber. |
| 511 |
* Token format: hex(timestamp).hmac_signature |
| 512 |
* The token is bound to the subscriber ID and their secret key, and signed with the site's auth salt. |
| 513 |
*/ |
| 514 |
function acym_generateAutologinToken(int $subId, string $subKey): string |
| 515 |
{ |
| 516 |
$timestamp = time(); |
| 517 |
$payload = $subId.'|'.$timestamp; |
| 518 |
$secret = $subKey.acym_getSiteSalt(); |
| 519 |
$signature = hash_hmac('sha256', $payload, $secret); |
| 520 |
|
| 521 |
return dechex($timestamp).'.'.$signature; |
| 522 |
} |
| 523 |
|
| 524 |
/** |
| 525 |
* Verify an autologin token. Returns true if the token is valid and not expired. |
| 526 |
* |
| 527 |
* @param int $subId The subscriber ID |
| 528 |
* @param string $token The token from the URL |
| 529 |
* @param string $storedKey The subscriber's stored secret key |
| 530 |
*/ |
| 531 |
function acym_verifyAutologinToken(int $subId, string $token, string $storedKey): bool |
| 532 |
{ |
| 533 |
$parts = explode('.', $token, 2); |
| 534 |
if (count($parts) !== 2) { |
| 535 |
return false; |
| 536 |
} |
| 537 |
|
| 538 |
$timestamp = @hexdec($parts[0]); |
| 539 |
$signature = $parts[1]; |
| 540 |
|
| 541 |
if (empty($timestamp) || $timestamp <= 0) { |
| 542 |
return false; |
| 543 |
} |
| 544 |
|
| 545 |
$config = acym_config(); |
| 546 |
$maxAgeHours = intval($config->get('autologin_token_duration', 48)); |
| 547 |
$maxAge = $maxAgeHours * 3600; |
| 548 |
|
| 549 |
if ((time() - $timestamp) > $maxAge) { |
| 550 |
return false; |
| 551 |
} |
| 552 |
|
| 553 |
$payload = $subId.'|'.$timestamp; |
| 554 |
$secret = $storedKey.acym_getSiteSalt(); |
| 555 |
$expectedSignature = hash_hmac('sha256', $payload, $secret); |
| 556 |
|
| 557 |
return hash_equals($expectedSignature, $signature); |
| 558 |
} |
| 559 |
|
