+
+/**
+ * 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 .
+ date ('U') . 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);
+ else if (strlen ($new_password) > 0)
+ return 'Error';
+
+ /* Rewrite informations. */
+ $p = VAR_ALIAS . s2p ($alias) . $alias;
+ $handle = fopen ($p, 'w');
+ fwrite ($handle,
+ $p . NL .
+ $ip . NL .
+ date ('U') . 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';
+}
+
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