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1 <?php
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2
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3 /**
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4 * Classes for managesieve operations (using PEAR::Net_Sieve)
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5 *
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6 * Copyright (C) 2008-2011, The Roundcube Dev Team
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7 * Copyright (C) 2011, Kolab Systems AG
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8 *
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9 * This program is free software: you can redistribute it and/or modify
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10 * it under the terms of the GNU General Public License as published by
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11 * the Free Software Foundation, either version 3 of the License, or
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12 * (at your option) any later version.
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13 *
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14 * This program is distributed in the hope that it will be useful,
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15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 * GNU General Public License for more details.
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18 *
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19 * You should have received a copy of the GNU General Public License
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20 * along with this program. If not, see http://www.gnu.org/licenses/.
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21 */
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22
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23 // Managesieve Protocol: RFC5804
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24
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25 class rcube_sieve
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26 {
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27 private $sieve; // Net_Sieve object
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28 private $error = false; // error flag
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29 private $errorLines = array(); // array of line numbers within sieve script which raised an error
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30 private $list = array(); // scripts list
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31 private $exts; // array of supported extensions
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32 private $active; // active script name
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33
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34 public $script; // rcube_sieve_script object
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35 public $current; // name of currently loaded script
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36
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37 const ERROR_CONNECTION = 1;
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38 const ERROR_LOGIN = 2;
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39 const ERROR_NOT_EXISTS = 3; // script not exists
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40 const ERROR_INSTALL = 4; // script installation
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41 const ERROR_ACTIVATE = 5; // script activation
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42 const ERROR_DELETE = 6; // script deletion
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43 const ERROR_INTERNAL = 7; // internal error
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44 const ERROR_DEACTIVATE = 8; // script activation
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45 const ERROR_OTHER = 255; // other/unknown error
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46
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47
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48 /**
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49 * Object constructor
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50 *
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51 * @param string Username (for managesieve login)
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52 * @param string Password (for managesieve login)
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53 * @param string Managesieve server hostname/address
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54 * @param string Managesieve server port number
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55 * @param string Managesieve authentication method
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56 * @param boolean Enable/disable TLS use
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57 * @param array Disabled extensions
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58 * @param boolean Enable/disable debugging
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59 * @param string Proxy authentication identifier
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60 * @param string Proxy authentication password
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61 * @param array List of options to pass to stream_context_create().
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62 */
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63 public function __construct($username, $password='', $host='localhost', $port=2000,
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64 $auth_type=null, $usetls=true, $disabled=array(), $debug=false,
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65 $auth_cid=null, $auth_pw=null, $options=array())
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66 {
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67 $this->sieve = new Net_Sieve();
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68
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69 if ($debug) {
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70 $this->sieve->setDebug(true, array($this, 'debug_handler'));
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71 }
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72
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73 $result = $this->sieve->connect($host, $port, $options, $usetls);
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74
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75 if (is_a($result, 'PEAR_Error')) {
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76 return $this->_set_error(self::ERROR_CONNECTION);
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77 }
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78
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79 if (!empty($auth_cid)) {
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80 $authz = $username;
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81 $username = $auth_cid;
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82 }
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83 if (!empty($auth_pw)) {
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84 $password = $auth_pw;
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85 }
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86
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87 $result = $this->sieve->login($username, $password, $auth_type ? strtoupper($auth_type) : null, $authz);
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88
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89 if (is_a($result, 'PEAR_Error')) {
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90 return $this->_set_error(self::ERROR_LOGIN);
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91 }
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92
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93 $this->exts = $this->get_extensions();
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94
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95 // disable features by config
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96 if (!empty($disabled)) {
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97 // we're working on lower-cased names
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98 $disabled = array_map('strtolower', (array) $disabled);
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99 foreach ($disabled as $ext) {
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100 if (($idx = array_search($ext, $this->exts)) !== false) {
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101 unset($this->exts[$idx]);
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102 }
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103 }
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104 }
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105 }
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106
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107 public function __destruct()
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108 {
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109 $this->sieve->disconnect();
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110 }
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111
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112 /**
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113 * Getter for error code
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114 */
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115 public function error()
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116 {
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117 return $this->error ?: false;
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118 }
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119
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120 /**
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121 * Saves current script into server
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122 */
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123 public function save($name = null)
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124 {
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125 if (!$this->sieve) {
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126 return $this->_set_error(self::ERROR_INTERNAL);
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127 }
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128
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129 if (!$this->script) {
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130 return $this->_set_error(self::ERROR_INTERNAL);
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131 }
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132
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133 if (!$name) {
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134 $name = $this->current;
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135 }
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136
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137 $script = $this->script->as_text();
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138
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139 if (!$script) {
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140 $script = '/* empty script */';
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141 }
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142
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143 $result = $this->sieve->installScript($name, $script);
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144 if (is_a($result, 'PEAR_Error')) {
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145 return $this->_set_error(self::ERROR_INSTALL);
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146 }
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147
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148 return true;
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149 }
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150
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151 /**
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152 * Saves text script into server
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153 */
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154 public function save_script($name, $content = null)
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155 {
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156 if (!$this->sieve) {
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157 return $this->_set_error(self::ERROR_INTERNAL);
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158 }
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159
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160 if (!$content) {
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161 $content = '/* empty script */';
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162 }
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163
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164 $result = $this->sieve->installScript($name, $content);
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165
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166 if (is_a($result, 'PEAR_Error')) {
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167 $rawErrorMessage = $result->getMessage();
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168 $errMessages = preg_split("/$name:/", $rawErrorMessage);
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169
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170 if (count($errMessages) > 0) {
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171 foreach ($errMessages as $singleError) {
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172 $matches = array();
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173 $res = preg_match('/line (\d+):(.*)/i', $singleError, $matches);
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174
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175 if ($res === 1 ) {
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176 if (count($matches) > 2) {
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177 $this->errorLines[] = array("line" => $matches[1], "msg" => $matches[2]);
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178 }
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179 else {
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180 $this->errorLines[] = array("line" => $matches[1], "msg" => null);
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181 }
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182 }
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183 }
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184 }
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185
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186 return $this->_set_error(self::ERROR_INSTALL);
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187 }
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188
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189 return true;
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190 }
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191
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192 /**
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193 * Returns the current error line within the saved sieve script
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194 */
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195 public function get_error_lines()
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196 {
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197 return $this->errorLines;
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198 }
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199
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200 /**
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201 * Activates specified script
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202 */
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203 public function activate($name = null)
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204 {
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205 if (!$this->sieve) {
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206 return $this->_set_error(self::ERROR_INTERNAL);
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207 }
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208
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209 if (!$name) {
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210 $name = $this->current;
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211 }
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212
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213 $result = $this->sieve->setActive($name);
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214
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215 if (is_a($result, 'PEAR_Error')) {
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216 return $this->_set_error(self::ERROR_ACTIVATE);
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217 }
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218
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219 $this->active = $name;
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220
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221 return true;
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222 }
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223
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224 /**
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225 * De-activates specified script
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226 */
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227 public function deactivate()
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228 {
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229 if (!$this->sieve) {
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230 return $this->_set_error(self::ERROR_INTERNAL);
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231 }
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232
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233 $result = $this->sieve->setActive('');
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234
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235 if (is_a($result, 'PEAR_Error')) {
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236 return $this->_set_error(self::ERROR_DEACTIVATE);
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237 }
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238
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239 $this->active = null;
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240
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241 return true;
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242 }
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243
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244 /**
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245 * Removes specified script
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246 */
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247 public function remove($name = null)
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248 {
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249 if (!$this->sieve) {
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250 return $this->_set_error(self::ERROR_INTERNAL);
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251 }
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252
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253 if (!$name) {
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254 $name = $this->current;
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255 }
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256
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257 // script must be deactivated first
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258 if ($name == $this->sieve->getActive()) {
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259 $result = $this->sieve->setActive('');
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260
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261 if (is_a($result, 'PEAR_Error')) {
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262 return $this->_set_error(self::ERROR_DELETE);
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263 }
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264
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265 $this->active = null;
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266 }
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267
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268 $result = $this->sieve->removeScript($name);
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269
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270 if (is_a($result, 'PEAR_Error')) {
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271 return $this->_set_error(self::ERROR_DELETE);
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272 }
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273
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274 if ($name == $this->current) {
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275 $this->current = null;
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276 }
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277
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278 $this->list = null;
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279
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280 return true;
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281 }
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282
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283 /**
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284 * Gets list of supported by server Sieve extensions
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285 */
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286 public function get_extensions()
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287 {
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288 if ($this->exts)
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289 return $this->exts;
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290
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291 if (!$this->sieve)
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292 return $this->_set_error(self::ERROR_INTERNAL);
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293
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294 $ext = $this->sieve->getExtensions();
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295
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296 if (is_a($ext, 'PEAR_Error')) {
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297 return array();
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298 }
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299
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300 // we're working on lower-cased names
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301 $ext = array_map('strtolower', (array) $ext);
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302
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303 if ($this->script) {
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304 $supported = $this->script->get_extensions();
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305 foreach ($ext as $idx => $ext_name)
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306 if (!in_array($ext_name, $supported))
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307 unset($ext[$idx]);
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308 }
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309
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310 return array_values($ext);
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311 }
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312
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313 /**
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314 * Gets list of scripts from server
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315 */
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316 public function get_scripts()
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317 {
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318 if (!$this->list) {
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319
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320 if (!$this->sieve)
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321 return $this->_set_error(self::ERROR_INTERNAL);
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322
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323 $list = $this->sieve->listScripts($active);
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324
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325 if (is_a($list, 'PEAR_Error')) {
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326 return $this->_set_error(self::ERROR_OTHER);
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327 }
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328
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329 $this->list = $list;
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330 $this->active = $active;
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331 }
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332
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333 return $this->list;
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334 }
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335
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336 /**
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337 * Returns active script name
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338 */
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339 public function get_active()
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340 {
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341 if ($this->active !== null) {
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342 return $this->active;
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343 }
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344
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345 if (!$this->sieve) {
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346 return $this->_set_error(self::ERROR_INTERNAL);
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347 }
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348
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349 return $this->active = $this->sieve->getActive();
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350 }
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351
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352 /**
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353 * Loads script by name
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354 */
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355 public function load($name)
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356 {
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357 if (!$this->sieve)
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358 return $this->_set_error(self::ERROR_INTERNAL);
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359
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360 if ($this->current == $name)
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361 return true;
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362
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363 $script = $this->sieve->getScript($name);
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364
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365 if (is_a($script, 'PEAR_Error')) {
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366 return $this->_set_error(self::ERROR_OTHER);
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367 }
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368
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369 // try to parse from Roundcube format
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370 $this->script = $this->_parse($script);
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371
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372 $this->current = $name;
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373
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374 return true;
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375 }
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376
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377 /**
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378 * Loads script from text content
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379 */
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380 public function load_script($script)
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381 {
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382 if (!$this->sieve)
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383 return $this->_set_error(self::ERROR_INTERNAL);
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384
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385 // try to parse from Roundcube format
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386 $this->script = $this->_parse($script);
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387 }
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388
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389 /**
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390 * Creates rcube_sieve_script object from text script
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391 */
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392 private function _parse($txt)
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393 {
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394 // parse
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395 $script = new rcube_sieve_script($txt, $this->exts);
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396
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397 // fix/convert to Roundcube format
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398 if (!empty($script->content)) {
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399 // replace all elsif with if+stop, we support only ifs
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400 foreach ($script->content as $idx => $rule) {
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401 if (empty($rule['type']) || !preg_match('/^(if|elsif|else)$/', $rule['type'])) {
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402 continue;
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403 }
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404
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405 $script->content[$idx]['type'] = 'if';
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406
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407 // 'stop' not found?
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408 foreach ($rule['actions'] as $action) {
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409 if (preg_match('/^(stop|vacation)$/', $action['type'])) {
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410 continue 2;
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411 }
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412 }
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413 if (!empty($script->content[$idx+1]) && $script->content[$idx+1]['type'] != 'if') {
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414 $script->content[$idx]['actions'][] = array('type' => 'stop');
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415 }
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416 }
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417 }
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418
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419 return $script;
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420 }
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421
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422 /**
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423 * Gets specified script as text
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424 */
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425 public function get_script($name)
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426 {
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427 if (!$this->sieve)
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428 return $this->_set_error(self::ERROR_INTERNAL);
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429
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430 $content = $this->sieve->getScript($name);
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431
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432 if (is_a($content, 'PEAR_Error')) {
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433 return $this->_set_error(self::ERROR_OTHER);
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434 }
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435
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436 return $content;
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437 }
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438
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439 /**
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440 * Creates empty script or copy of other script
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441 */
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442 public function copy($name, $copy)
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443 {
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444 if (!$this->sieve)
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445 return $this->_set_error(self::ERROR_INTERNAL);
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446
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447 if ($copy) {
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448 $content = $this->sieve->getScript($copy);
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449
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450 if (is_a($content, 'PEAR_Error')) {
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451 return $this->_set_error(self::ERROR_OTHER);
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452 }
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453 }
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454
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455
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456 return $this->save_script($name, $content);
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457 }
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458
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459 private function _set_error($error)
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460 {
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461 $this->error = $error;
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462 return false;
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463 }
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464
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465 /**
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466 * This is our own debug handler for connection
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467 */
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468 public function debug_handler(&$sieve, $message)
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469 {
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470 rcube::write_log('sieve', preg_replace('/\r\n$/', '', $message));
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471 }
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472 }
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