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1071 lines
35 KiB
PHP
1071 lines
35 KiB
PHP
<?php
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/**
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* Class for operations on Sieve scripts
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*
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* Copyright (C) 2008-2011, The Roundcube Dev Team
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* Copyright (C) 2011, Kolab Systems AG
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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class rcube_sieve_script
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{
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public $content = array(); // script rules array
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private $vars = array(); // "global" variables
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private $prefix = ''; // script header (comments)
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private $supported = array( // Sieve extensions supported by class
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'fileinto', // RFC5228
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'envelope', // RFC5228
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'reject', // RFC5429
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'ereject', // RFC5429
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'copy', // RFC3894
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'vacation', // RFC5230
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'relational', // RFC3431
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'regex', // draft-ietf-sieve-regex-01
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'imapflags', // draft-melnikov-sieve-imapflags-06
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'imap4flags', // RFC5232
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'include', // draft-ietf-sieve-include-12
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'variables', // RFC5229
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'body', // RFC5173
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'subaddress', // RFC5233
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// @TODO: enotify/notify, spamtest+virustest, mailbox, date
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);
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/**
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* Object constructor
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*
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* @param string Script's text content
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* @param array List of capabilities supported by server
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*/
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public function __construct($script, $capabilities=array())
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{
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$capabilities = array_map('strtolower', (array) $capabilities);
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// disable features by server capabilities
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if (!empty($capabilities)) {
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foreach ($this->supported as $idx => $ext) {
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if (!in_array($ext, $capabilities)) {
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unset($this->supported[$idx]);
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}
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}
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}
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// Parse text content of the script
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$this->_parse_text($script);
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}
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/**
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* Adds rule to the script (at the end)
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*
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* @param string Rule name
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* @param array Rule content (as array)
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*
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* @return int The index of the new rule
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*/
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public function add_rule($content)
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{
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// TODO: check this->supported
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array_push($this->content, $content);
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return sizeof($this->content)-1;
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}
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public function delete_rule($index)
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{
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if(isset($this->content[$index])) {
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unset($this->content[$index]);
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return true;
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}
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return false;
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}
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public function size()
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{
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return sizeof($this->content);
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}
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public function update_rule($index, $content)
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{
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// TODO: check this->supported
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if ($this->content[$index]) {
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$this->content[$index] = $content;
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return $index;
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}
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return false;
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}
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/**
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* Sets "global" variable
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*
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* @param string $name Variable name
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* @param string $value Variable value
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* @param array $mods Variable modifiers
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*/
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public function set_var($name, $value, $mods = array())
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{
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// Check if variable exists
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for ($i=0, $len=count($this->vars); $i<$len; $i++) {
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if ($this->vars[$i]['name'] == $name) {
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break;
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}
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}
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$var = array_merge($mods, array('name' => $name, 'value' => $value));
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$this->vars[$i] = $var;
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}
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/**
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* Unsets "global" variable
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*
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* @param string $name Variable name
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*/
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public function unset_var($name)
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{
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// Check if variable exists
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foreach ($this->vars as $idx => $var) {
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if ($var['name'] == $name) {
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unset($this->vars[$idx]);
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break;
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}
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}
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}
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/**
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* Gets the value of "global" variable
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*
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* @param string $name Variable name
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*
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* @return string Variable value
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*/
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public function get_var($name)
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{
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// Check if variable exists
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for ($i=0, $len=count($this->vars); $i<$len; $i++) {
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if ($this->vars[$i]['name'] == $name) {
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return $this->vars[$i]['name'];
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}
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}
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}
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/**
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* Sets script header content
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*
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* @param string $text Header content
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*/
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public function set_prefix($text)
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{
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$this->prefix = $text;
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}
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/**
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* Returns script as text
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*/
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public function as_text()
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{
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$output = '';
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$exts = array();
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$idx = 0;
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if (!empty($this->vars)) {
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if (in_array('variables', (array)$this->supported)) {
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$has_vars = true;
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array_push($exts, 'variables');
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}
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foreach ($this->vars as $var) {
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if (empty($has_vars)) {
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// 'variables' extension not supported, put vars in comments
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$output .= sprintf("# %s %s\n", $var['name'], $var['value']);
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}
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else {
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$output .= 'set ';
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foreach (array_diff(array_keys($var), array('name', 'value')) as $opt) {
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$output .= ":$opt ";
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}
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$output .= self::escape_string($var['name']) . ' ' . self::escape_string($var['value']) . ";\n";
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}
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}
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}
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// rules
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foreach ($this->content as $rule) {
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$extension = '';
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$script = '';
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$tests = array();
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$i = 0;
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// header
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if (!empty($rule['name']) && strlen($rule['name'])) {
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$script .= '# rule:[' . $rule['name'] . "]\n";
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}
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// constraints expressions
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if (!empty($rule['tests'])) {
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foreach ($rule['tests'] as $test) {
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$tests[$i] = '';
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switch ($test['test']) {
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case 'size':
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$tests[$i] .= ($test['not'] ? 'not ' : '');
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$tests[$i] .= 'size :' . ($test['type']=='under' ? 'under ' : 'over ') . $test['arg'];
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break;
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case 'true':
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$tests[$i] .= ($test['not'] ? 'false' : 'true');
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break;
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case 'exists':
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$tests[$i] .= ($test['not'] ? 'not ' : '');
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$tests[$i] .= 'exists ' . self::escape_string($test['arg']);
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break;
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case 'header':
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$tests[$i] .= ($test['not'] ? 'not ' : '');
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$tests[$i] .= 'header';
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if (!empty($test['type'])) {
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// relational operator + comparator
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if (preg_match('/^(value|count)-([gteqnl]{2})/', $test['type'], $m)) {
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array_push($exts, 'relational');
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array_push($exts, 'comparator-i;ascii-numeric');
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$tests[$i] .= ' :' . $m[1] . ' "' . $m[2] . '" :comparator "i;ascii-numeric"';
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}
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else {
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$this->add_comparator($test, $tests[$i], $exts);
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if ($test['type'] == 'regex') {
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array_push($exts, 'regex');
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}
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$tests[$i] .= ' :' . $test['type'];
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}
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}
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$tests[$i] .= ' ' . self::escape_string($test['arg1']);
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$tests[$i] .= ' ' . self::escape_string($test['arg2']);
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break;
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case 'address':
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case 'envelope':
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if ($test['test'] == 'envelope') {
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array_push($exts, 'envelope');
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}
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$tests[$i] .= ($test['not'] ? 'not ' : '');
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$tests[$i] .= $test['test'];
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if (!empty($test['part'])) {
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$tests[$i] .= ' :' . $test['part'];
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if ($test['part'] == 'user' || $test['part'] == 'detail') {
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array_push($exts, 'subaddress');
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}
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}
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$this->add_comparator($test, $tests[$i], $exts);
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if (!empty($test['type'])) {
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if ($test['type'] == 'regex') {
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array_push($exts, 'regex');
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}
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$tests[$i] .= ' :' . $test['type'];
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}
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$tests[$i] .= ' ' . self::escape_string($test['arg1']);
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$tests[$i] .= ' ' . self::escape_string($test['arg2']);
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break;
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case 'body':
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array_push($exts, 'body');
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$tests[$i] .= ($test['not'] ? 'not ' : '') . 'body';
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$this->add_comparator($test, $tests[$i], $exts);
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if (!empty($test['part'])) {
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$tests[$i] .= ' :' . $test['part'];
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if (!empty($test['content']) && $test['part'] == 'content') {
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$tests[$i] .= ' ' . self::escape_string($test['content']);
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}
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}
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if (!empty($test['type'])) {
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if ($test['type'] == 'regex') {
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array_push($exts, 'regex');
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}
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$tests[$i] .= ' :' . $test['type'];
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}
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$tests[$i] .= ' ' . self::escape_string($test['arg']);
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break;
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}
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$i++;
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}
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}
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// disabled rule: if false #....
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if (!empty($tests)) {
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$script .= 'if ' . ($rule['disabled'] ? 'false # ' : '');
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if (count($tests) > 1) {
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$tests_str = implode(', ', $tests);
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}
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else {
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$tests_str = $tests[0];
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}
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if ($rule['join'] || count($tests) > 1) {
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$script .= sprintf('%s (%s)', $rule['join'] ? 'allof' : 'anyof', $tests_str);
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}
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else {
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$script .= $tests_str;
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}
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$script .= "\n{\n";
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}
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// action(s)
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if (!empty($rule['actions'])) {
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foreach ($rule['actions'] as $action) {
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$action_script = '';
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switch ($action['type']) {
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case 'fileinto':
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array_push($exts, 'fileinto');
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$action_script .= 'fileinto ';
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if ($action['copy']) {
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$action_script .= ':copy ';
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array_push($exts, 'copy');
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}
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$action_script .= self::escape_string($action['target']);
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break;
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case 'redirect':
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$action_script .= 'redirect ';
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if ($action['copy']) {
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$action_script .= ':copy ';
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array_push($exts, 'copy');
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}
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$action_script .= self::escape_string($action['target']);
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break;
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case 'reject':
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case 'ereject':
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array_push($exts, $action['type']);
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$action_script .= $action['type'].' '
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. self::escape_string($action['target']);
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break;
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case 'addflag':
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case 'setflag':
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case 'removeflag':
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if (in_array('imap4flags', $this->supported))
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array_push($exts, 'imap4flags');
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else
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array_push($exts, 'imapflags');
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$action_script .= $action['type'].' '
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. self::escape_string($action['target']);
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break;
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case 'keep':
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case 'discard':
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case 'stop':
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$action_script .= $action['type'];
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break;
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case 'include':
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array_push($exts, 'include');
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$action_script .= 'include ';
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foreach (array_diff(array_keys($action), array('target', 'type')) as $opt) {
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$action_script .= ":$opt ";
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}
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$action_script .= self::escape_string($action['target']);
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break;
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case 'set':
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array_push($exts, 'variables');
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$action_script .= 'set ';
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foreach (array_diff(array_keys($action), array('name', 'value', 'type')) as $opt) {
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$action_script .= ":$opt ";
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}
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$action_script .= self::escape_string($action['name']) . ' ' . self::escape_string($action['value']);
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break;
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case 'vacation':
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array_push($exts, 'vacation');
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$action_script .= 'vacation';
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if (!empty($action['days']))
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$action_script .= " :days " . $action['days'];
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if (!empty($action['addresses']))
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$action_script .= " :addresses " . self::escape_string($action['addresses']);
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if (!empty($action['subject']))
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$action_script .= " :subject " . self::escape_string($action['subject']);
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if (!empty($action['handle']))
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$action_script .= " :handle " . self::escape_string($action['handle']);
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if (!empty($action['from']))
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$action_script .= " :from " . self::escape_string($action['from']);
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if (!empty($action['mime']))
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$action_script .= " :mime";
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$action_script .= " " . self::escape_string($action['reason']);
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break;
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}
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if ($action_script) {
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$script .= !empty($tests) ? "\t" : '';
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$script .= $action_script . ";\n";
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}
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}
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}
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if ($script) {
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$output .= $script . (!empty($tests) ? "}\n" : '');
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$idx++;
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}
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}
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// requires
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if (!empty($exts))
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$output = 'require ["' . implode('","', array_unique($exts)) . "\"];\n" . $output;
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if (!empty($this->prefix)) {
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$output = $this->prefix . "\n\n" . $output;
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}
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return $output;
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}
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/**
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* Returns script object
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*
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*/
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public function as_array()
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{
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return $this->content;
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}
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/**
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* Returns array of supported extensions
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*
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*/
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public function get_extensions()
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{
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return array_values($this->supported);
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}
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|
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/**
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* Converts text script to rules array
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*
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* @param string Text script
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*/
|
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private function _parse_text($script)
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{
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$prefix = '';
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$options = array();
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while ($script) {
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$script = trim($script);
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$rule = array();
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// Comments
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while (!empty($script) && $script[0] == '#') {
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$endl = strpos($script, "\n");
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$line = $endl ? substr($script, 0, $endl) : $script;
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// Roundcube format
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if (preg_match('/^# rule:\[(.*)\]/', $line, $matches)) {
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$rulename = $matches[1];
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}
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// KEP:14 variables
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else if (preg_match('/^# (EDITOR|EDITOR_VERSION) (.+)$/', $line, $matches)) {
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$this->set_var($matches[1], $matches[2]);
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}
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// Horde-Ingo format
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else if (!empty($options['format']) && $options['format'] == 'INGO'
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&& preg_match('/^# (.*)/', $line, $matches)
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) {
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$rulename = $matches[1];
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}
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else if (empty($options['prefix'])) {
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$prefix .= $line . "\n";
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}
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$script = ltrim(substr($script, strlen($line) + 1));
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}
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|
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// handle script header
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if (empty($options['prefix'])) {
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$options['prefix'] = true;
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if ($prefix && strpos($prefix, 'horde.org/ingo')) {
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$options['format'] = 'INGO';
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}
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}
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|
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// Control structures/blocks
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if (preg_match('/^(if|else|elsif)/i', $script)) {
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$rule = $this->_tokenize_rule($script);
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if (strlen($rulename) && !empty($rule)) {
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$rule['name'] = $rulename;
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}
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}
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// Simple commands
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else {
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$rule = $this->_parse_actions($script, ';');
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if (!empty($rule[0]) && is_array($rule)) {
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// set "global" variables
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if ($rule[0]['type'] == 'set') {
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unset($rule[0]['type']);
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$this->vars[] = $rule[0];
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}
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else {
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$rule = array('actions' => $rule);
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}
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}
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}
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$rulename = '';
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if (!empty($rule)) {
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$this->content[] = $rule;
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}
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}
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|
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if (!empty($prefix)) {
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$this->prefix = trim($prefix);
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}
|
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}
|
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|
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/**
|
|
* Convert text script fragment to rule object
|
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*
|
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* @param string Text rule
|
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*
|
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* @return array Rule data
|
|
*/
|
|
private function _tokenize_rule(&$content)
|
|
{
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$cond = strtolower(self::tokenize($content, 1));
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|
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if ($cond != 'if' && $cond != 'elsif' && $cond != 'else') {
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return null;
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}
|
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|
|
$disabled = false;
|
|
$join = false;
|
|
|
|
// disabled rule (false + comment): if false # .....
|
|
if (preg_match('/^\s*false\s+#/i', $content)) {
|
|
$content = preg_replace('/^\s*false\s+#\s*/i', '', $content);
|
|
$disabled = true;
|
|
}
|
|
|
|
while (strlen($content)) {
|
|
$tokens = self::tokenize($content, true);
|
|
$separator = array_pop($tokens);
|
|
|
|
if (!empty($tokens)) {
|
|
$token = array_shift($tokens);
|
|
}
|
|
else {
|
|
$token = $separator;
|
|
}
|
|
|
|
$token = strtolower($token);
|
|
|
|
if ($token == 'not') {
|
|
$not = true;
|
|
$token = strtolower(array_shift($tokens));
|
|
}
|
|
else {
|
|
$not = false;
|
|
}
|
|
|
|
switch ($token) {
|
|
case 'allof':
|
|
$join = true;
|
|
break;
|
|
case 'anyof':
|
|
break;
|
|
|
|
case 'size':
|
|
$size = array('test' => 'size', 'not' => $not);
|
|
for ($i=0, $len=count($tokens); $i<$len; $i++) {
|
|
if (!is_array($tokens[$i])
|
|
&& preg_match('/^:(under|over)$/i', $tokens[$i])
|
|
) {
|
|
$size['type'] = strtolower(substr($tokens[$i], 1));
|
|
}
|
|
else {
|
|
$size['arg'] = $tokens[$i];
|
|
}
|
|
}
|
|
|
|
$tests[] = $size;
|
|
break;
|
|
|
|
case 'header':
|
|
$header = array('test' => 'header', 'not' => $not, 'arg1' => '', 'arg2' => '');
|
|
for ($i=0, $len=count($tokens); $i<$len; $i++) {
|
|
if (!is_array($tokens[$i]) && preg_match('/^:comparator$/i', $tokens[$i])) {
|
|
$header['comparator'] = $tokens[++$i];
|
|
}
|
|
else if (!is_array($tokens[$i]) && preg_match('/^:(count|value)$/i', $tokens[$i])) {
|
|
$header['type'] = strtolower(substr($tokens[$i], 1)) . '-' . $tokens[++$i];
|
|
}
|
|
else if (!is_array($tokens[$i]) && preg_match('/^:(is|contains|matches|regex)$/i', $tokens[$i])) {
|
|
$header['type'] = strtolower(substr($tokens[$i], 1));
|
|
}
|
|
else {
|
|
$header['arg1'] = $header['arg2'];
|
|
$header['arg2'] = $tokens[$i];
|
|
}
|
|
}
|
|
|
|
$tests[] = $header;
|
|
break;
|
|
|
|
case 'address':
|
|
case 'envelope':
|
|
$header = array('test' => $token, 'not' => $not, 'arg1' => '', 'arg2' => '');
|
|
for ($i=0, $len=count($tokens); $i<$len; $i++) {
|
|
if (!is_array($tokens[$i]) && preg_match('/^:comparator$/i', $tokens[$i])) {
|
|
$header['comparator'] = $tokens[++$i];
|
|
}
|
|
else if (!is_array($tokens[$i]) && preg_match('/^:(is|contains|matches|regex)$/i', $tokens[$i])) {
|
|
$header['type'] = strtolower(substr($tokens[$i], 1));
|
|
}
|
|
else if (!is_array($tokens[$i]) && preg_match('/^:(localpart|domain|all|user|detail)$/i', $tokens[$i])) {
|
|
$header['part'] = strtolower(substr($tokens[$i], 1));
|
|
}
|
|
else {
|
|
$header['arg1'] = $header['arg2'];
|
|
$header['arg2'] = $tokens[$i];
|
|
}
|
|
}
|
|
|
|
$tests[] = $header;
|
|
break;
|
|
|
|
case 'body':
|
|
$header = array('test' => 'body', 'not' => $not, 'arg' => '');
|
|
for ($i=0, $len=count($tokens); $i<$len; $i++) {
|
|
if (!is_array($tokens[$i]) && preg_match('/^:comparator$/i', $tokens[$i])) {
|
|
$header['comparator'] = $tokens[++$i];
|
|
}
|
|
else if (!is_array($tokens[$i]) && preg_match('/^:(is|contains|matches|regex)$/i', $tokens[$i])) {
|
|
$header['type'] = strtolower(substr($tokens[$i], 1));
|
|
}
|
|
else if (!is_array($tokens[$i]) && preg_match('/^:(raw|content|text)$/i', $tokens[$i])) {
|
|
$header['part'] = strtolower(substr($tokens[$i], 1));
|
|
|
|
if ($header['part'] == 'content') {
|
|
$header['content'] = $tokens[++$i];
|
|
}
|
|
}
|
|
else {
|
|
$header['arg'] = $tokens[$i];
|
|
}
|
|
}
|
|
|
|
$tests[] = $header;
|
|
break;
|
|
|
|
case 'exists':
|
|
$tests[] = array('test' => 'exists', 'not' => $not,
|
|
'arg' => array_pop($tokens));
|
|
break;
|
|
|
|
case 'true':
|
|
$tests[] = array('test' => 'true', 'not' => $not);
|
|
break;
|
|
|
|
case 'false':
|
|
$tests[] = array('test' => 'true', 'not' => !$not);
|
|
break;
|
|
}
|
|
|
|
// goto actions...
|
|
if ($separator == '{') {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// ...and actions block
|
|
$actions = $this->_parse_actions($content);
|
|
|
|
if ($tests && $actions) {
|
|
$result = array(
|
|
'type' => $cond,
|
|
'tests' => $tests,
|
|
'actions' => $actions,
|
|
'join' => $join,
|
|
'disabled' => $disabled,
|
|
);
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Parse body of actions section
|
|
*
|
|
* @param string $content Text body
|
|
* @param string $end End of text separator
|
|
*
|
|
* @return array Array of parsed action type/target pairs
|
|
*/
|
|
private function _parse_actions(&$content, $end = '}')
|
|
{
|
|
$result = null;
|
|
|
|
while (strlen($content)) {
|
|
$tokens = self::tokenize($content, true);
|
|
$separator = array_pop($tokens);
|
|
|
|
if (!empty($tokens)) {
|
|
$token = array_shift($tokens);
|
|
}
|
|
else {
|
|
$token = $separator;
|
|
}
|
|
|
|
switch ($token) {
|
|
case 'discard':
|
|
case 'keep':
|
|
case 'stop':
|
|
$result[] = array('type' => $token);
|
|
break;
|
|
|
|
case 'fileinto':
|
|
case 'redirect':
|
|
$copy = false;
|
|
$target = '';
|
|
|
|
for ($i=0, $len=count($tokens); $i<$len; $i++) {
|
|
if (strtolower($tokens[$i]) == ':copy') {
|
|
$copy = true;
|
|
}
|
|
else {
|
|
$target = $tokens[$i];
|
|
}
|
|
}
|
|
|
|
$result[] = array('type' => $token, 'copy' => $copy,
|
|
'target' => $target);
|
|
break;
|
|
|
|
case 'reject':
|
|
case 'ereject':
|
|
$result[] = array('type' => $token, 'target' => array_pop($tokens));
|
|
break;
|
|
|
|
case 'vacation':
|
|
$vacation = array('type' => 'vacation', 'reason' => array_pop($tokens));
|
|
|
|
for ($i=0, $len=count($tokens); $i<$len; $i++) {
|
|
$tok = strtolower($tokens[$i]);
|
|
if ($tok == ':days') {
|
|
$vacation['days'] = $tokens[++$i];
|
|
}
|
|
else if ($tok == ':subject') {
|
|
$vacation['subject'] = $tokens[++$i];
|
|
}
|
|
else if ($tok == ':addresses') {
|
|
$vacation['addresses'] = $tokens[++$i];
|
|
}
|
|
else if ($tok == ':handle') {
|
|
$vacation['handle'] = $tokens[++$i];
|
|
}
|
|
else if ($tok == ':from') {
|
|
$vacation['from'] = $tokens[++$i];
|
|
}
|
|
else if ($tok == ':mime') {
|
|
$vacation['mime'] = true;
|
|
}
|
|
}
|
|
|
|
$result[] = $vacation;
|
|
break;
|
|
|
|
case 'setflag':
|
|
case 'addflag':
|
|
case 'removeflag':
|
|
$result[] = array('type' => $token,
|
|
// Flags list: last token (skip optional variable)
|
|
'target' => $tokens[count($tokens)-1]
|
|
);
|
|
break;
|
|
|
|
case 'include':
|
|
$include = array('type' => 'include', 'target' => array_pop($tokens));
|
|
|
|
// Parameters: :once, :optional, :global, :personal
|
|
for ($i=0, $len=count($tokens); $i<$len; $i++) {
|
|
$tok = strtolower($tokens[$i]);
|
|
if ($tok[0] == ':') {
|
|
$include[substr($tok, 1)] = true;
|
|
}
|
|
}
|
|
|
|
$result[] = $include;
|
|
break;
|
|
|
|
case 'set':
|
|
$set = array('type' => 'set', 'value' => array_pop($tokens), 'name' => array_pop($tokens));
|
|
|
|
// Parameters: :lower :upper :lowerfirst :upperfirst :quotewildcard :length
|
|
for ($i=0, $len=count($tokens); $i<$len; $i++) {
|
|
$tok = strtolower($tokens[$i]);
|
|
if ($tok[0] == ':') {
|
|
$set[substr($tok, 1)] = true;
|
|
}
|
|
}
|
|
|
|
$result[] = $set;
|
|
break;
|
|
|
|
case 'require':
|
|
// skip, will be build according to used commands
|
|
// $result[] = array('type' => 'require', 'target' => $tokens);
|
|
break;
|
|
|
|
}
|
|
|
|
if ($separator == $end)
|
|
break;
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
private function add_comparator($test, &$out, &$exts)
|
|
{
|
|
if (empty($test['comparator'])) {
|
|
return;
|
|
}
|
|
|
|
if ($test['comparator'] == 'i;ascii-numeric') {
|
|
array_push($exts, 'relational');
|
|
array_push($exts, 'comparator-i;ascii-numeric');
|
|
}
|
|
else if (!in_array($test['comparator'], array('i;octet', 'i;ascii-casemap'))) {
|
|
array_push($exts, 'comparator-' . $test['comparator']);
|
|
}
|
|
|
|
// skip default comparator
|
|
if ($test['comparator'] != 'i;ascii-casemap') {
|
|
$out .= ' :comparator ' . self::escape_string($test['comparator']);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Escape special chars into quoted string value or multi-line string
|
|
* or list of strings
|
|
*
|
|
* @param string $str Text or array (list) of strings
|
|
*
|
|
* @return string Result text
|
|
*/
|
|
static function escape_string($str)
|
|
{
|
|
if (is_array($str) && count($str) > 1) {
|
|
foreach($str as $idx => $val)
|
|
$str[$idx] = self::escape_string($val);
|
|
|
|
return '[' . implode(',', $str) . ']';
|
|
}
|
|
else if (is_array($str)) {
|
|
$str = array_pop($str);
|
|
}
|
|
|
|
// multi-line string
|
|
if (preg_match('/[\r\n\0]/', $str) || strlen($str) > 1024) {
|
|
return sprintf("text:\n%s\n.\n", self::escape_multiline_string($str));
|
|
}
|
|
// quoted-string
|
|
else {
|
|
return '"' . addcslashes($str, '\\"') . '"';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Escape special chars in multi-line string value
|
|
*
|
|
* @param string $str Text
|
|
*
|
|
* @return string Text
|
|
*/
|
|
static function escape_multiline_string($str)
|
|
{
|
|
$str = preg_split('/(\r?\n)/', $str, -1, PREG_SPLIT_DELIM_CAPTURE);
|
|
|
|
foreach ($str as $idx => $line) {
|
|
// dot-stuffing
|
|
if (isset($line[0]) && $line[0] == '.') {
|
|
$str[$idx] = '.' . $line;
|
|
}
|
|
}
|
|
|
|
return implode($str);
|
|
}
|
|
|
|
/**
|
|
* Splits script into string tokens
|
|
*
|
|
* @param string &$str The script
|
|
* @param mixed $num Number of tokens to return, 0 for all
|
|
* or True for all tokens until separator is found.
|
|
* Separator will be returned as last token.
|
|
* @param int $in_list Enable to call recursively inside a list
|
|
*
|
|
* @return mixed Tokens array or string if $num=1
|
|
*/
|
|
static function tokenize(&$str, $num=0, $in_list=false)
|
|
{
|
|
$result = array();
|
|
|
|
// remove spaces from the beginning of the string
|
|
while (($str = ltrim($str)) !== ''
|
|
&& (!$num || $num === true || count($result) < $num)
|
|
) {
|
|
switch ($str[0]) {
|
|
|
|
// Quoted string
|
|
case '"':
|
|
$len = strlen($str);
|
|
|
|
for ($pos=1; $pos<$len; $pos++) {
|
|
if ($str[$pos] == '"') {
|
|
break;
|
|
}
|
|
if ($str[$pos] == "\\") {
|
|
if ($str[$pos + 1] == '"' || $str[$pos + 1] == "\\") {
|
|
$pos++;
|
|
}
|
|
}
|
|
}
|
|
if ($str[$pos] != '"') {
|
|
// error
|
|
}
|
|
// we need to strip slashes for a quoted string
|
|
$result[] = stripslashes(substr($str, 1, $pos - 1));
|
|
$str = substr($str, $pos + 1);
|
|
break;
|
|
|
|
// Parenthesized list
|
|
case '[':
|
|
$str = substr($str, 1);
|
|
$result[] = self::tokenize($str, 0, true);
|
|
break;
|
|
case ']':
|
|
$str = substr($str, 1);
|
|
return $result;
|
|
break;
|
|
|
|
// list/test separator
|
|
case ',':
|
|
// command separator
|
|
case ';':
|
|
// block/tests-list
|
|
case '(':
|
|
case ')':
|
|
case '{':
|
|
case '}':
|
|
$sep = $str[0];
|
|
$str = substr($str, 1);
|
|
if ($num === true) {
|
|
$result[] = $sep;
|
|
break 2;
|
|
}
|
|
break;
|
|
|
|
// bracket-comment
|
|
case '/':
|
|
if ($str[1] == '*') {
|
|
if ($end_pos = strpos($str, '*/')) {
|
|
$str = substr($str, $end_pos + 2);
|
|
}
|
|
else {
|
|
// error
|
|
$str = '';
|
|
}
|
|
}
|
|
break;
|
|
|
|
// hash-comment
|
|
case '#':
|
|
if ($lf_pos = strpos($str, "\n")) {
|
|
$str = substr($str, $lf_pos);
|
|
break;
|
|
}
|
|
else {
|
|
$str = '';
|
|
}
|
|
|
|
// String atom
|
|
default:
|
|
// empty or one character
|
|
if ($str === '' || $str === null) {
|
|
break 2;
|
|
}
|
|
if (strlen($str) < 2) {
|
|
$result[] = $str;
|
|
$str = '';
|
|
break;
|
|
}
|
|
|
|
// tag/identifier/number
|
|
if (preg_match('/^([a-z0-9:_]+)/i', $str, $m)) {
|
|
$str = substr($str, strlen($m[1]));
|
|
|
|
if ($m[1] != 'text:') {
|
|
$result[] = $m[1];
|
|
}
|
|
// multiline string
|
|
else {
|
|
// possible hash-comment after "text:"
|
|
if (preg_match('/^( |\t)*(#[^\n]+)?\n/', $str, $m)) {
|
|
$str = substr($str, strlen($m[0]));
|
|
}
|
|
// get text until alone dot in a line
|
|
if (preg_match('/^(.*)\r?\n\.\r?\n/sU', $str, $m)) {
|
|
$text = $m[1];
|
|
// remove dot-stuffing
|
|
$text = str_replace("\n..", "\n.", $text);
|
|
$str = substr($str, strlen($m[0]));
|
|
}
|
|
else {
|
|
$text = '';
|
|
}
|
|
|
|
$result[] = $text;
|
|
}
|
|
}
|
|
// fallback, skip one character as infinite loop prevention
|
|
else {
|
|
$str = substr($str, 1);
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
return $num === 1 ? (isset($result[0]) ? $result[0] : null) : $result;
|
|
}
|
|
|
|
}
|