initial commit

2025-07-02 01:47:28 -04:00 · 2012-11-28 03:55:08 -05:00
parent 7adb399b2e
commit cf140a2e97
3247 changed files with 492437 additions and 0 deletions
--- a/html/phpmyad/libraries/sanitizing.lib.php
+++ b/html/phpmyad/libraries/sanitizing.lib.php
@ -0,0 +1,152 @@
+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * This is in a separate script because it's called from a number of scripts
+ *
+ * @package PhpMyAdmin
+ */
+
+/**
+ * Checks whether given link is valid
+ *
+ * @param string $url URL to check
+ * @return boolean True if string can be used as link
+ */
+function PMA_checkLink($url)
+{
+    $valid_starts = array(
+        'http://',
+        'https://',
+        './url.php?url=http%3A%2F%2F',
+        './url.php?url=https%3A%2F%2F',
+    );
+    if (defined('PMA_SETUP')) {
+        $valid_starts[] = '../Documentation.html';
+        $valid_starts[] = '?page=form&';
+    } else {
+        $valid_starts[] = './Documentation.html';
+    }
+    foreach ($valid_starts as $val) {
+        if (substr($url, 0, strlen($val)) == $val) {
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * Callback function for replacing [a@link@target] links in bb code.
+ *
+ * @param array $found Array of preg matches
+ * @return string Replaced string
+ */
+function PMA_replaceBBLink($found)
+{
+    /* Check for valid link */
+    if (! PMA_checkLink($found[1])) {
+        return $found[0];
+    }
+    /* a-z and _ allowed in target */
+    if (! empty($found[3]) && preg_match('/[^a-z_]+/i', $found[3])) {
+        return $found[0];
+    }
+
+    /* Construct target */
+    $target = '';
+    if (! empty($found[3])) {
+        $target = ' target="' . $found[3] . '"';
+    }
+
+    /* Construct url */
+    if (substr($found[1], 0, 4) == 'http') {
+        $url = PMA_linkURL($found[1]);
+    } else {
+        $url = $found[1];
+    }
+
+    return '<a href="' . $url . '"' . $target . '>';
+}
+
+/**
+ * Sanitizes $message, taking into account our special codes
+ * for formatting.
+ *
+ * If you want to include result in element attribute, you should escape it.
+ *
+ * Examples:
+ *
+ * <p><?php echo PMA_sanitize($foo); ?></p>
+ *
+ * <a title="<?php echo PMA_sanitize($foo, true); ?>">bar</a>
+ *
+ * @param string  $message the message
+ * @param boolean $escape  whether to escape html in result
+ * @param boolean $safe    whether string is safe (can keep < and > chars)
+ * @return  string   the sanitized message
+ */
+function PMA_sanitize($message, $escape = false, $safe = false)
+{
+    if (!$safe) {
+        $message = strtr($message, array('<' => '&lt;', '>' => '&gt;'));
+    }
+    /* Interpret bb code */
+    $replace_pairs = array(
+        '[i]'       => '<em>',      // deprecated by em
+        '[/i]'      => '</em>',     // deprecated by em
+        '[em]'      => '<em>',
+        '[/em]'     => '</em>',
+        '[b]'       => '<strong>',  // deprecated by strong
+        '[/b]'      => '</strong>', // deprecated by strong
+        '[strong]'  => '<strong>',
+        '[/strong]' => '</strong>',
+        '[tt]'      => '<code>',    // deprecated by CODE or KBD
+        '[/tt]'     => '</code>',   // deprecated by CODE or KBD
+        '[code]'    => '<code>',
+        '[/code]'   => '</code>',
+        '[kbd]'     => '<kbd>',
+        '[/kbd]'    => '</kbd>',
+        '[br]'      => '<br />',
+        '[/a]'      => '</a>',
+        '[sup]'      => '<sup>',
+        '[/sup]'      => '</sup>',
+    );
+    /* Adjust links for setup, which lives in subfolder */
+    if (defined('PMA_SETUP')) {
+        $replace_pairs['[a@Documentation.html'] = '[a@../Documentation.html';
+    } else {
+        $replace_pairs['[a@Documentation.html'] = '[a@./Documentation.html';
+    }
+    $message = strtr($message, $replace_pairs);
+
+    /* Match links in bb code ([a@url@target], where @target is options) */
+    $pattern = '/\[a@([^]"@]*)(@([^]"]*))?\]/';
+
+    /* Find and replace all links */
+    $message = preg_replace_callback($pattern, 'PMA_replaceBBLink', $message);
+
+    /* Possibly escape result */
+    if ($escape) {
+        $message = htmlspecialchars($message);
+    }
+
+    return $message;
+}
+
+
+/**
+ * Sanitize a filename by removing anything besides A-Za-z0-9_.-
+ *
+ * Intended usecase:
+ *    When using a filename in a Content-Disposition header the value should not contain ; or "
+ *
+ * @param   string  The filename
+ *
+ * @return  string  the sanitized filename
+ *
+ */
+function PMA_sanitize_filename($filename) {
+    $filename = preg_replace('/[^A-Za-z0-9_.-]/', '_', $filename);
+    return $filename;
+}
+
+?>