+ foreach (str_split($hex, 2) as $pair) {
+ $b .= chr(hexdec($pair));
+ }
+ return base64_encode($b);
+}
+
+/**
+ * Read alias informations
+ * @return array containing informations.
+ */
+function jirafeau_get_alias($hash)
+{
+ $out = array();
+ $link = VAR_ALIAS . s2p("$hash") . $hash;
+
+ if (!file_exists($link)) {
+ return $out;
+ }
+
+ $c = file($link);
+ $out['md5_password'] = trim($c[0]);
+ $out['ip'] = trim($c[1]);
+ $out['update_date'] = trim($c[2]);
+ $out['destination'] = trim($c[3], NL);
+
+ return $out;
+}
+
+/** Create an alias to a jirafeau's link.
+ * @param $alias alias name
+ * @param $destination reference of the destination
+ * @param $password password to protect alias
+ * @param $ip client's IP
+ * @return a string containing the edit code of the alias or the string "Error"
+ */
+function jirafeau_alias_create($alias, $destination, $password, $ip)
+{
+ /* Check that alias and password are long enough. */
+ if (strlen($alias) < 8 ||
+ strlen($alias) > 32 ||
+ strlen($password) < 8 ||
+ strlen($password) > 32) {
+ return 'Error';
+ }
+
+ /* Check that destination exists. */
+ $l = jirafeau_get_link($destination);
+ if (!count($l)) {
+ return 'Error';
+ }
+
+ /* Check that alias does not already exists. */
+ $alias = md5($alias);
+ $p = VAR_ALIAS . s2p($alias);
+ if (file_exists($p)) {
+ return 'Error';
+ }
+
+ /* Create alias folder. */
+ @mkdir($p, 0755, true);
+ if (!file_exists($p)) {
+ return 'Error';
+ }
+
+ /* Generate password. */
+ $md5_password = md5($password);
+
+ /* Store informations. */
+ $p .= $alias;
+ $handle = fopen($p, 'w');
+ fwrite($handle,
+ $md5_password . NL .
+ $ip . NL .
+ time() . NL .
+ $destination . NL);
+ fclose($handle);
+
+ return 'Ok';
+}
+
+/** Update an alias.
+ * @param $alias alias to update
+ * @param $destination reference of the new destination
+ * @param $password password to protect alias
+ * @param $new_password optional new password to protect alias
+ * @param $ip client's IP
+ * @return "Ok" or "Error" string
+ */
+function jirafeau_alias_update($alias, $destination, $password,
+ $new_password, $ip)
+{
+ $alias = md5($alias);
+ /* Check that alias exits. */
+ $a = jirafeau_get_alias($alias);
+ if (!count($a)) {
+ return 'Error';
+ }
+
+ /* Check that destination exists. */
+ $l = jirafeau_get_link($a["destination"]);
+ if (!count($l)) {
+ return 'Error';
+ }
+
+ /* Check password. */
+ if ($a["md5_password"] != md5($password)) {
+ return 'Error';
+ }
+
+ $p = $a['md5_password'];
+ if (strlen($new_password) >= 8 &&
+ strlen($new_password) <= 32) {
+ $p = md5($new_password);
+ } elseif (strlen($new_password) > 0) {
+ return 'Error';
+ }
+
+ /* Rewrite informations. */
+ $p = VAR_ALIAS . s2p($alias) . $alias;
+ $handle = fopen($p, 'w');
+ fwrite($handle,
+ $p . NL .
+ $ip . NL .
+ time() . NL .
+ $destination . NL);
+ fclose($handle);
+ return 'Ok';
+}
+
+/** Get an alias.
+ * @param $alias alias to get
+ * @return alias destination or "Error" string
+ */
+function jirafeau_alias_get($alias)
+{
+ $alias = md5($alias);
+ /* Check that alias exits. */
+ $a = jirafeau_get_alias($alias);
+ if (!count($a)) {
+ return 'Error';
+ }
+
+ return $a['destination'];
+}
+
+function jirafeau_clean_rm_alias($alias)
+{
+ $p = s2p("$alias");
+ if (file_exists(VAR_ALIAS . $p . $alias)) {
+ unlink(VAR_ALIAS . $p . $alias);
+ }
+ $parse = VAR_ALIAS . $p;
+ $scan = array();
+ while (file_exists($parse)
+ && ($scan = scandir($parse))
+ && count($scan) == 2 // '.' and '..' folders => empty.
+ && basename($parse) != basename(VAR_ALIAS)) {
+ rmdir($parse);
+ $parse = substr($parse, 0, strlen($parse) - strlen(basename($parse)) - 1);
+ }
+}
+
+/** Delete an alias.
+ * @param $alias alias to delete
+ * @param $password password to protect alias
+ * @return "Ok" or "Error" string
+ */
+function jirafeau_alias_delete($alias, $password)
+{
+ $alias = md5($alias);
+ /* Check that alias exits. */
+ $a = jirafeau_get_alias($alias);
+ if (!count($a)) {
+ return "Error";
+ }
+
+ /* Check password. */
+ if ($a["md5_password"] != md5($password)) {
+ return 'Error';
+ }
+
+ jirafeau_clean_rm_alias($alias);
+ return 'Ok';
+}
+
+/**
+ * Replace markers in templates.
+ *
+ * Available markers have the scheme "###MARKERNAME###".
+ *
+ * @param $content string Template text with markers
+ * @param $htmllinebreaks boolean Convert linebreaks to BR-Tags
+ * @return Template with replaced markers
+ */
+function jirafeau_replace_markers($content, $htmllinebreaks = false)
+{
+ $patterns = array(
+ '/###ORGANISATION###/',
+ '/###CONTACTPERSON###/',
+ '/###WEBROOT###/'
+ );
+ $replacements = array(
+ $GLOBALS['cfg']['organisation'],
+ $GLOBALS['cfg']['contactperson'],
+ $GLOBALS['cfg']['web_root']
+ );
+ $content = preg_replace($patterns, $replacements, $content);
+
+ if (true === $htmllinebreaks) {
+ $content = nl2br($content);
+ }
+
+ return $content;
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