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<?php
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/* $Id$ */
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/*
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	xmlparse.inc
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	functions to parse/dump configuration files in XML format
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	part of m0n0wall (http://m0n0.ch/wall)
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	Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
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	All rights reserved.
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	Redistribution and use in source and binary forms, with or without
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	modification, are permitted provided that the following conditions are met:
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	1. Redistributions of source code must retain the above copyright notice,
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	   this list of conditions and the following disclaimer.
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	2. Redistributions in binary form must reproduce the above copyright
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	   notice, this list of conditions and the following disclaimer in the
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	   documentation and/or other materials provided with the distribution.
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	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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	AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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	AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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	OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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	POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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	pfSense_MODULE:	utils
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*/
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/* The following items will be treated as arrays in config.xml */
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function listtags() {
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  /* Please keep this list alpha sorted and no longer than 80 characters
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   * I know it's a pain, but it's a pain to find stuff too if it's not
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   */
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	$ret = explode(" ",
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                "alias aliasurl allowedip authserver bridged ca cacert cert clone config ".
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                "container columnitem depends_on_package disk dnsserver dnsupdate ".
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                "domainoverrides dyndns earlyshellcmd element encryption-algorithm-option ".
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                "field fieldname hash-algorithm-option gateway_item gateway_group gif gre ".
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                "group hosts member ifgroupentry igmpentry interface_array item key lagg " .
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                "lbaction lbpool l7rules lbprotocol ".
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                "member menu tab mobilekey monitor_type mount ntpserver onetoone ".
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                "openvpn-server openvpn-client openvpn-csc " .
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                "option ppp package passthrumac phase1 phase2 priv proxyarpnet qinqentry queue ".
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                "pages pipe roll route row rrddatafile rule schedule service servernat servers ".
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                "serversdisabled earlyshellcmd shellcmd staticmap subqueue timerange ".
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                "tunnel user vip virtual_server vlan winsserver wolentry widget"
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                );
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	return array_flip($ret);
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}
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/* Package XML tags that should be treat as a list not as a traditional array */
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function listtags_pkg() {
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	$ret = array("depends_on_package", "onetoone", "queue", "rule", "servernat", "alias", "additional_files_needed", "tab", "template", "menu", "rowhelperfield", "service", "step", "package", "columnitem", "option", "item", "field", "package", "file");
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	return array_flip($ret);
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}
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function add_elements(&$cfgarray, &$parser) {
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        global $listtags;
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        while ($parser->read()) {
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                switch ($parser->nodeType) {
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                case XMLReader::WHITESPACE:
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                case XMLReader::SIGNIFICANT_WHITESPACE:
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                        break;
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                case XMLReader::ELEMENT:
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                        if (isset($listtags[strtolower($parser->name)])) {
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                        	if (!$parser->isEmptyElement)
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                                        add_elements($cfgarray[$parser->name][], $parser);
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                        } else {
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                        	if ($parser->isEmptyElement)
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					$cfgarray[$parser->name] = "";
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				else
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                        		add_elements($cfgarray[$parser->name], $parser);
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			}
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                        break;
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                case XMLReader::TEXT:
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		case XMLReader::CDATA:
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                        $cfgarray = $parser->value;
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                        break;
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                case XMLReader::END_ELEMENT:
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			return;
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			break;
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                default:
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                        break;
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                }
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	}
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}
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function parse_xml_config($cffile, $rootobj, $isstring = "false") {
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	global $listtags;
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	$listtags = listtags();
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        if (isset($GLOBALS['custom_listtags'])) {
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          foreach($GLOBALS['custom_listtags'] as $tag) {
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            $listtags[$tag] = $tag;
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          }
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        }
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	return parse_xml_config_raw($cffile, $rootobj);
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}
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function parse_xml_config_pkg($cffile, $rootobj, $isstring = "false") {
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	global $listtags;
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	$listtags = listtags_pkg();
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        if (isset($GLOBALS['custom_listtags_pkg'])) {
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          foreach($GLOBALS['custom_listtags_pkg'] as $tag) {
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            $listtags[$tag] = $tag;
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          }
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        }
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	return parse_xml_config_raw($cffile, $rootobj, $isstring);
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}
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function parse_xml_config_raw($cffile, $rootobj, $isstring = "false") {
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	$parsedcfg = array();
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	$par = new XMLReader();
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	if ($par->open($cffile, "UTF-8", LIBXML_NOERROR | LIBXML_NOWARNING)) {
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		add_elements($parsedcfg, $par);
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		$par->close();
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	} else
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		log_error("Error returned while trying to parse {$cffile}");
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	return $parsedcfg[$rootobj];
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}
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function dump_xml_config_sub(& $writer, $arr) {
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        global $listtags;
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        foreach ($arr as $ent => $val) {
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                if (is_array($val)) {
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                        /* is it just a list of multiple values? */
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                        if (isset($listtags[strtolower($ent)])) {
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                                foreach ($val as $cval) {
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                                        if (is_array($cval)) {
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                                                if (empty($cval))
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                                                        $writer->writeElement($ent);
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                                                else {
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                                                        $writer->startElement($ent);
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                                                        dump_xml_config_sub($writer, $cval);
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                                                        $writer->endElement();
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                                                }
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                                        } else {
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                                                if($cval === false) continue;
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                                                if ((is_bool($val) && ($val == true)) || ($val === ""))
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                                                        $writer->writeElement($ent);
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                                                else if (!is_bool($val))
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							$writer->writeElement($ent, $cval);
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                                        }
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                                }
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                        } else if (empty($val)) {
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                                $writer->writeElement($ent);
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                        } else {
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                                /* it's an array */
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                                $writer->startElement($ent);
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                                dump_xml_config_sub($writer, $val);
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                                $writer->endElement();
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                        }
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                } else {
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			if ((is_bool($val) && ($val == true)) || ($val === ""))
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                                $writer->writeElement($ent);
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                        else if (!is_bool($val))
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                                $writer->writeElement($ent, $val);
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                }
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        }
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}
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function dump_xml_config($arr, $rootobj) {
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	global $listtags;
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	$listtags = listtags();
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        if (isset($GLOBALS['custom_listtags'])) {
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          foreach($GLOBALS['custom_listtags'] as $tag) {
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            $listtags[$tag] = $tag;
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          }
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        }
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	return dump_xml_config_raw($arr, $rootobj);
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}
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function dump_xml_config_pkg($arr, $rootobj) {
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	global $listtags;
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	$listtags = listtags_pkg();
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        if (isset($GLOBALS['custom_listtags_pkg'])) {
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          foreach($GLOBALS['custom_listtags_pkg'] as $tag) {
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            $listtags[$tag] = $tag;
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          }
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        }
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	return dump_xml_config_raw($arr, $rootobj);
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}
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function dump_xml_config_raw($arr, $rootobj) {
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        $writer = new XMLWriter();
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        $writer->openMemory();
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        $writer->setIndent(true);
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        $writer->setIndentString("\t");
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        $writer->startDocument("1.0", "UTF-8");
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        $writer->startElement($rootobj);
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        dump_xml_config_sub($writer, $arr);
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        $writer->endElement();
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        $writer->endDocument();
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        $xmlconfig = $writer->outputMemory(true);
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        return $xmlconfig;
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}
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?>