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<?php
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/*
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* xmlparse.inc
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*
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* part of pfSense (https://www.pfsense.org)
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* Copyright (c) 2004-2013 BSD Perimeter
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* Copyright (c) 2013-2016 Electric Sheep Fencing
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* Copyright (c) 2014-2023 Rubicon Communications, LLC (Netgate)
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* All rights reserved.
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*
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* originally 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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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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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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/*
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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 = array(
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'acls', 'alias', 'aliasurl', 'allowedip', 'allowedhostname', 'authserver',
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'bridged', 'build_port_path',
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'ca', 'cacert', 'cert', 'crl', 'clone', 'config',
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'container', 'columnitem', 'checkipservice',
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'depends_on_package', 'disk', 'dnsserver', 'dnsupdate', 'domainoverrides', 'dyndns',
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'earlyshellcmd', 'element', 'encryption-algorithm-option',
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'field', 'fieldname',
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'gateway_item', 'gateway_group', 'gif', 'gre', 'group',
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'hash-algorithm-option', 'hosts', 'ifgroupentry', 'igmpentry', 'interface_array', 'item', 'key',
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'lagg', 'lbaction', 'lbpool', 'l7rules', 'lbprotocol',
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'member', 'menu', 'tab', 'mobilekey', 'monitor_type', 'mount',
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'npt', 'ntpserver',
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'onetoone', 'openvpn-server', 'openvpn-client', 'openvpn-csc', 'option',
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'package', 'passthrumac', 'phase1', 'phase2', 'ppp', 'pppoe', 'priv', 'proxyarpnet', 'pool',
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'qinqentry', 'queue',
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'pages', 'pipe', 'radnsserver', 'roll', 'route', 'row', 'rrddatafile', 'rule',
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'schedule', 'service', 'servernat', 'servers', 'sshkeyfile',
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'serversdisabled', 'shellcmd', 'staticmap', 'subqueue', 'switch', 'swport',
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'timerange', 'tunnel', 'user', 'vip', 'virtual_server', 'vlan', 'vlangroup', 'voucherdbfile',
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'vxlan', 'wgpeer', 'winsserver', 'wolentry', 'widget', 'xmldatafile'
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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 treated as a list not as a traditional array */
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function listtags_pkg() {
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$ret = array('build_port_path', 'depends_on_package', 'onetoone', 'queue', 'rule', 'servernat', 'alias', 'additional_files_needed', 'tab', 'template', 'menu', 'rowhelperfield', 'service', 'step', 'package', 'columnitem', 'option', 'item', 'field', 'package', 'file');
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return array_flip($ret);
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}
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function startElement($parser, $name, $attrs) {
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global $parsedcfg, $depth, $curpath, $havedata, $listtags;
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array_push($curpath, strtolower($name));
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$ptr = &$parsedcfg;
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foreach ($curpath as $path) {
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$ptr = &$ptr[$path];
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}
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/* is it an element that belongs to a list? */
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if (isset($listtags[strtolower($name)])) {
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/* is there an array already? */
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if (!is_array($ptr)) {
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/* make an array */
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$ptr = array();
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}
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array_push($curpath, count($ptr));
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} else if (isset($ptr)) {
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/* multiple entries not allowed for this element, bail out */
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throw new Exception(
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sprintf(gettext('XML error: %1$s at line %2$d cannot occur more than once') . "\n",
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$name,
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xml_get_current_line_number($parser)));
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}
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$depth++;
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$havedata = $depth;
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}
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function endElement($parser, $name) {
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global $depth, $curpath, $parsedcfg, $havedata, $listtags;
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if ($havedata == $depth) {
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$ptr = &$parsedcfg;
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foreach ($curpath as $path) {
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$ptr = &$ptr[$path];
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}
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$ptr = "";
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}
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array_pop($curpath);
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/* Special case handling for erroneous empty $listtag elements. Pop the most
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* recent $listtag element off if it is a string AND is zero length. */
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if (isset($listtags[strtolower($name)])) {
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$ptr = &$parsedcfg;
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foreach ($curpath as $path) {
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$ptr = &$ptr[$path];
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}
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if (!(is_array(end($ptr)) || strlen(end($ptr)))) {
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array_pop($ptr);
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}
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}
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if (isset($listtags[strtolower($name)])) {
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array_pop($curpath);
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}
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$depth--;
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}
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function cData($parser, $data) {
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global $depth, $curpath, $parsedcfg, $havedata;
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$data = trim($data, "\t\n\r");
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if ($data != "") {
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$ptr = &$parsedcfg;
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foreach ($curpath as $path) {
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$ptr = &$ptr[$path];
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}
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if (is_string($ptr)) {
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$ptr .= html_entity_decode($data);
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} else {
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if (trim($data, " ") != "") {
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$ptr = html_entity_decode($data);
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$havedata++;
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}
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}
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}
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}
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function parse_xml_config($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, $isstring);
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}
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function parse_xml_config_pkg($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] = $tag;
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}
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}
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$cfg =parse_xml_config_raw($cffile, $rootobj, $isstring);
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if ($cfg == -1) {
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return array();
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}
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return $cfg;
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}
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function parse_xml_config_raw($cffile, $rootobj, $isstring = "false") {
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global $depth, $curpath, $parsedcfg, $havedata, $listtags;
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$parsedcfg = array();
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$curpath = array();
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$depth = 0;
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$havedata = 0;
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$xml_parser = xml_parser_create();
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xml_set_element_handler($xml_parser, "startElement", "endElement");
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xml_set_character_data_handler($xml_parser, "cdata");
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xml_parser_set_option($xml_parser, XML_OPTION_SKIP_WHITE, 1);
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if (!($fp = fopen($cffile, "r"))) {
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log_error(gettext("Error: could not open XML input") . "\n");
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return -1;
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}
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while ($data = fread($fp, 4096)) {
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if (!xml_parse($xml_parser, $data, feof($fp))) {
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log_error(sprintf(gettext('XML error: %1$s at line %2$d in %3$s') . "\n",
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xml_error_string(xml_get_error_code($xml_parser)),
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xml_get_current_line_number($xml_parser),
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$cffile));
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return -1;
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}
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}
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xml_parser_free($xml_parser);
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if ($rootobj) {
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if (!is_array($rootobj)) {
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$rootobj = array($rootobj);
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}
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foreach ($rootobj as $rootobj_name) {
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if ($parsedcfg[$rootobj_name]) {
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break;
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}
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}
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if (!$parsedcfg[$rootobj_name]) {
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log_error(sprintf(gettext("XML error: no %s object found!") . "\n", implode(" or ", $rootobj)));
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return -1;
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}
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return $parsedcfg[$rootobj_name];
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} else {
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return $parsedcfg;
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}
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}
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/* Return true if a field should be cdata encoded */
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function is_cdata_entity($ent) {
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$cdata_fields = array(
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'aclname', 'auth_pass', 'auth_prompt', 'auth_user', 'certca', 'certname', 'city', 'common_name',
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'descr', 'detail', 'email', 'encryption_password', 'hint', 'ldap_attr',
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'ldap_authcn', 'ldap_basedn', 'ldap_basedomain', 'ldap_bind', 'ldapbinddn',
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'ldapbindpass', 'ldap_extended_query', 'ldap_filter', 'ldap_pam_groupdn', 'ldap_pass', 'ldap_user',
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'login_banner', 'organization', 'password', 'rangedescr', 'state', 'text',
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'username', 'varusersusername', 'varuserspassword'
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);
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241
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/* Check if the entity name starts with any of the strings above */
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return preg_match('/(^' . implode('|^', $cdata_fields) . ')/', $ent) === 1;
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}
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function dump_xml_config_sub($arr, $indent) {
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global $listtags;
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249
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if (!is_array($arr)) {
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return null;
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}
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253
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$xmlconfig = "";
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255
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foreach ($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($cval)) {
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$xmlconfig .= str_repeat("\t", $indent);
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$xmlconfig .= "<$ent></$ent>\n";
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} else {
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$xmlconfig .= str_repeat("\t", $indent);
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$xmlconfig .= "<$ent>\n";
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$xmlconfig .= dump_xml_config_sub($cval, $indent + 1);
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$xmlconfig .= str_repeat("\t", $indent);
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$xmlconfig .= "</$ent>\n";
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}
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} else {
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if ($cval === false) {
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continue;
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}
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$xmlconfig .= str_repeat("\t", $indent);
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if ((is_bool($cval) && $cval == true) || ($cval === "")) {
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$xmlconfig .= "<$ent></$ent>\n";
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} else if (is_cdata_entity($ent)) {
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$xmlconfig .= "<$ent><![CDATA[" . htmlentities($cval) . "]]></$ent>\n";
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} else {
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$xmlconfig .= "<$ent>" . htmlentities($cval) . "</$ent>\n";
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}
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}
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}
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} else if (empty($val)) {
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$xmlconfig .= str_repeat("\t", $indent);
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$xmlconfig .= "<$ent></$ent>\n";
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} else {
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/* it's an array */
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$xmlconfig .= str_repeat("\t", $indent);
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$xmlconfig .= "<$ent>\n";
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$xmlconfig .= dump_xml_config_sub($val, $indent + 1);
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$xmlconfig .= str_repeat("\t", $indent);
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$xmlconfig .= "</$ent>\n";
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}
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} else {
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298
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if ((is_bool($val) && ($val == true)) || ($val === "")) {
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$xmlconfig .= str_repeat("\t", $indent);
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$xmlconfig .= "<$ent></$ent>\n";
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} else if (!is_bool($val)) {
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$xmlconfig .= str_repeat("\t", $indent);
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if (is_cdata_entity($ent)) {
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$xmlconfig .= "<$ent><![CDATA[" . htmlentities($val) . "]]></$ent>\n";
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} else {
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$xmlconfig .= "<$ent>" . htmlentities($val) . "</$ent>\n";
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}
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}
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}
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}
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311
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return $xmlconfig;
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313
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}
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314
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315
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function dump_xml_config($arr, $rootobj) {
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316
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global $listtags;
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317
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$listtags = listtags();
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318
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if (isset($GLOBALS['custom_listtags'])) {
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319
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foreach ($GLOBALS['custom_listtags'] as $tag) {
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320
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$listtags[$tag] = $tag;
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321
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}
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322
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}
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323
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return dump_xml_config_raw($arr, $rootobj);
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}
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325
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326
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function dump_xml_config_pkg($arr, $rootobj) {
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327
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global $listtags;
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328
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$listtags = listtags_pkg();
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329
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if (isset($GLOBALS['custom_listtags_pkg'])) {
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330
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foreach ($GLOBALS['custom_listtags_pkg'] as $tag) {
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331
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$listtags[$tag] = $tag;
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332
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}
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333
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}
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334
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return dump_xml_config_raw($arr, $rootobj);
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335
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}
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336
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337
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function dump_xml_config_raw($arr, $rootobj) {
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338
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339
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$xmlconfig = "<?xml version=\"1.0\"?" . ">\n";
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340
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$xmlconfig .= "<$rootobj>\n";
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341
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342
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$xmlconfig .= dump_xml_config_sub($arr, 1);
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343
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344
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$xmlconfig .= "</$rootobj>\n";
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345
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346
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return $xmlconfig;
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347
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}
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